TW201345305A - ENB storing RRC configuration information at another network component - Google Patents
ENB storing RRC configuration information at another network component Download PDFInfo
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- H—ELECTRICITY
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Description
本發明係關於無線通信系統,且詳言之係關於無線通信系統中之節點之間的連接之處置。 The present invention relates to wireless communication systems and, more particularly, to the handling of connections between nodes in a wireless communication system.
實現一或多個使用者設備(UE)與經配置以提供蜂巢式RAN之節點的一或多個基地台(BS)之間的無線資料傳送之無線通信系統為已知的。在無線蜂巢式通信系統上操作之UE的盛行性增加要求此等網路攜載且支援廣泛多種資料訊務類型及服務。UE可視為具有無線連接性,能夠執行廣範圍多種應用程式及服務之通用計算平台,該等應用程式及服務由器件製造商預安裝或由使用者根據使用者之特定使用要求安裝/下載。應用程式本身可源自對應地廣範圍之軟體公司、製造商及第三方開發者之群組。此等UE平台可包括行動器件,諸如行動電話、「智慧型電話」、個人數位助理、手持型或膝上型電腦、平板電腦及具有無線通信連接性之類似行動器件,或類似地本文中所指代之UE可包括在正常使用時相對不可移動之固定器件,此等固定器件具有無線連接性以使得其能夠使用無線通信系統進行通信。UE平台亦可包括包含嵌入式通信連接性之其他器件類型,諸如家用電器、公用設施錶以及安全及監控設備,或消費者電子器件,諸如靜態相機或視 訊攝影機、音訊/視覺娛樂設備及遊戲平台。 Wireless communication systems that implement wireless data transfer between one or more user equipments (UEs) and one or more base stations (BSs) configured to provide a node of a cellular RAN are known. The prevalence of UEs operating on wireless cellular communication systems requires such networks to carry and support a wide variety of data traffic types and services. The UE can be viewed as a general-purpose computing platform that has wireless connectivity and is capable of executing a wide variety of applications and services that are pre-installed by the device manufacturer or installed/downloaded by the user based on the particular usage requirements of the user. The application itself can be derived from a corresponding group of software companies, manufacturers and third-party developers. Such UE platforms may include mobile devices such as mobile phones, "smart phones", personal digital assistants, handheld or laptop computers, tablets, and similar mobile devices with wireless communication connectivity, or similarly A UE referred to may include fixed devices that are relatively immovable during normal use, such fixed devices having wireless connectivity to enable them to communicate using a wireless communication system. The UE platform may also include other device types including embedded communication connectivity, such as home appliances, utility meters, and security and surveillance devices, or consumer electronics such as still cameras or Cameras, audio/visual entertainment devices and gaming platforms.
無線通信網路經常在使用者平面訊務(其可視為攜載應用層級使用者資料)與控制平面訊務(其可視為用以實現或支援使用者平面資料經由無線通信網路之傳送的發信號,包括(例如)行動性控制及無線電資源控制(RRC)功能性)之間進行區分。由無線通信網路攜載之使用者平面訊務及服務的實例包括語音、視訊、網際網路/網頁瀏覽工作階段、上載/下載檔案傳送、即時訊息傳遞、電子郵件、導航服務、RSS反饋及串流媒體。控制平面訊務之實例包括核心網路行動性及附接控制(所謂的非存取層(NAS)發信號)、無線電存取網路控制(諸如無線電資源控制(RRC)),及工作階段控制發信號。 The wireless communication network is often used in user plane services (which can be regarded as carrying application level user data) and control plane services (which can be regarded as implementing or supporting the transmission of user plane data via the wireless communication network). The distinction is made between signals, including, for example, mobility control and radio resource control (RRC) functionality. Examples of user plane services and services carried by wireless communication networks include voice, video, internet/web browsing sessions, upload/download file transfers, instant messaging, email, navigation services, RSS feeds and Streaming media. Examples of control plane traffic include core network mobility and attachment control (so-called non-access stratum (NAS) signaling), radio access network control (such as radio resource control (RRC)), and work phase control Send signal.
在無線電及核心網路通信層外部(或「上方」),應用程式可在提供特定服務時利用和組合大量基於網際網路之(或其他專屬)協定以達成所要結果。舉例而言,導航應用程式可利用TCP以用於自伺服器至器件之映射資料的檔案傳送,但亦可使用支援朝向導航伺服器之週期性或非週期性持續存留發信號的協定以在中間網路節點(諸如狀態防火牆)存在的情況下維持應用層級連接。類似地,電子郵件應用程式可使用特定同步化協定以使UE上之信箱內容與電子郵件伺服器中之信箱內容對準,但亦可使用週期性或非週期性伺服器輪詢機制以檢查新電子郵件。本發明涉及操作無線通信系統以向UE提供連接性以支援此等應用程式。 Outside of the radio and core network communication layers (or "above"), applications can utilize and combine a large number of Internet-based (or other proprietary) agreements to achieve desired results when providing specific services. For example, the navigation application can utilize TCP for file transfer from the server to the device, but can also use a protocol that supports periodic or aperiodic persistence signaling towards the navigation server in the middle. Application level connections are maintained in the presence of network nodes such as stateful firewalls. Similarly, the email application can use a specific synchronization protocol to align the mailbox content on the UE with the mailbox content in the email server, but can also use a periodic or aperiodic server polling mechanism to check for new e-mail. The present invention relates to operating a wireless communication system to provide connectivity to a UE to support such applications.
為了獲得對本發明之較全面理解,現參考闡述某些實施例、結合圖式進行的以下詳細描述,該等圖式可簡短地如下描述。 For a fuller understanding of the present invention, reference should be made to
100‧‧‧無線通信系統/無線通信網路 100‧‧‧Wireless communication system/wireless communication network
101‧‧‧使用者設備(UE) 101‧‧‧User Equipment (UE)
102‧‧‧無線電存取網路(RAN) 102‧‧‧Radio Access Network (RAN)
102a‧‧‧演進節點B(eNB) 102a‧‧‧Evolved Node B (eNB)
102b‧‧‧演進節點B(eNB) 102b‧‧‧Evolved Node B (eNB)
103‧‧‧核心網路(CN) 103‧‧‧ Core Network (CN)
103a‧‧‧伺服閘道(SGW) 103a‧‧‧Servo Gateway (SGW)
103b‧‧‧行動性管理端點(MME) 103b‧‧‧Action Management Endpoint (MME)
103c‧‧‧封包閘道(PGW) 103c‧‧‧Packaging Gateway (PGW)
103d‧‧‧新行動性管理端點(MME) 103d‧‧‧New Mobile Management Endpoint (MME)
104‧‧‧公用網際網路 104‧‧‧Community Internet
200‧‧‧使用者設備(UE) 200‧‧‧User Equipment (UE)
201‧‧‧通信匯流排 201‧‧‧Communication bus
202‧‧‧處理器 202‧‧‧ processor
204‧‧‧通信子系統 204‧‧‧Communication subsystem
206‧‧‧無線網路 206‧‧‧Wireless network
208‧‧‧電源 208‧‧‧Power supply
210‧‧‧隨機存取記憶體(RAM) 210‧‧‧ Random Access Memory (RAM)
212‧‧‧大容量儲存器 212‧‧‧Mass storage
214‧‧‧唯讀記憶體(ROM) 214‧‧‧Read-only memory (ROM)
216‧‧‧顯示螢幕 216‧‧‧display screen
218‧‧‧i/o控制器 218‧‧‧i/o controller
301‧‧‧通信管理器 301‧‧‧Communication Manager
302‧‧‧無線電資源控制(RRC)發信號層 302‧‧‧ Radio Resource Control (RRC) signaling layer
303‧‧‧無線電鏈路控制(RLC)發信號層 303‧‧‧ Radio Link Control (RLC) signaling layer
304‧‧‧媒體存取控制(MAC)發信號層 304‧‧‧Media Access Control (MAC) signaling layer
305‧‧‧實體層(PHY) 305‧‧‧ Physical layer (PHY)
401‧‧‧閒置模式 401‧‧‧ idle mode
402‧‧‧連接模式 402‧‧‧Connection mode
402a‧‧‧連續接收 402a‧‧‧Continuous reception
402b‧‧‧短不連續接收(DRX) 402b‧‧‧Short discontinuous reception (DRX)
402c‧‧‧長不連續接收(DRX) 402c‧‧‧Long discontinuous reception (DRX)
403‧‧‧無線電資源控制(RRC)連接建立 403‧‧‧ Radio Resource Control (RRC) Connection Establishment
404‧‧‧無線電資源控制(RRC)連接釋放 404‧‧‧ Radio Resource Control (RRC) Connection Release
S1C‧‧‧控制平面承載連接 S1C‧‧‧ control plane bearer connection
SIU‧‧‧使用者平面承載連接 SIU‧‧‧User plane bearer connection
圖1展示無線通信系統,其包括耦合至演進封包核心網路,進一步耦合至外部封包資料網路(諸如公用網際網路)之LTE無線電存取網路。 1 shows a wireless communication system including an LTE radio access network coupled to an evolved packet core network, further coupled to an external packet data network, such as a public internet network.
圖2展示根據本發明之用於無線通信系統中的實例UE之選定組件的方塊圖。 2 shows a block diagram of selected components of an example UE for use in a wireless communication system in accordance with the present invention.
圖3展示根據本發明之圖2中所展示的UE之RAM中之控制管理器的說明,控制管理器用於促進與無線通信系統之通信。 3 shows an illustration of a control manager in the RAM of the UE shown in FIG. 2 in accordance with the present invention for facilitating communication with a wireless communication system.
圖4說明LTE中之RRC連接狀態、DRX子狀態以及其之間的轉變。 FIG. 4 illustrates an RRC connection state, a DRX substate, and a transition therebetween in LTE.
圖5為說明不提供RRC連接中止功能性之無線通信系統中之正常RRC連接程序的訊息序列圖。 5 is a message sequence diagram illustrating a normal RRC connection procedure in a wireless communication system that does not provide RRC connection suspension functionality.
圖6為說明不提供RRC連接中止功能性之無線通信系統中之RRC連接程序的簡化的流程圖。 6 is a simplified flow diagram illustrating an RRC connection procedure in a wireless communication system that does not provide RRC connection abort functionality.
圖7為說明根據本發明之提供RRC連接中止功能性之無線通信系統中的RRC連接重新啟動程序之簡化的流程圖。 7 is a flow chart illustrating a simplified RRC connection restart procedure in a wireless communication system providing RRC connection abort functionality in accordance with the present invention.
圖8為說明根據本發明之無線通信系統中之例示性RRC連接中止程序的訊息序列圖。 Figure 8 is a message sequence diagram illustrating an exemplary RRC Connection Abort procedure in a wireless communication system in accordance with the present invention.
圖9為根據本發明之用於在RRC連接中止期間藉由行動性處置程序發信號變體來處置之例示性行動性情形的說明。 9 is an illustration of an illustrative mobility scenario for handling a signal variant by an action handler during an RRC connection suspension in accordance with the present invention.
圖10為說明在UE具有中止RRC連接之無線通信系統中的行動性處理替代方案B中之發信號變體1之實例的訊息序列圖。 FIG. 10 is a message sequence diagram illustrating an example of a signaling variant 1 in the mobile processing alternative B in a wireless communication system in which the UE has an RRC connection suspended.
圖11為說明在UE具有中止RRC連接之無線通信系統中的行動性處理替代方案B中之發信號變體2之實例的訊息序列圖。 11 is a message sequence chart illustrating an example of a signalling variant 2 in the mobile processing alternative B in a wireless communication system in which the UE has an RRC connection suspended.
圖12為說明在UE具有中止RRC連接之無線通信系統中的行動性處理替代方案B中之發信號變體3之實例的訊息序列圖。 FIG. 12 is a message sequence diagram illustrating an example of a signaling variant 3 in the mobile processing alternative B in a wireless communication system in which the UE has an RRC connection suspended.
圖13為類似於圖9之另一實例的說明,其中UE移動回至中止RRC連接有效之RAN的小區之中且再次移動至該小區之外。 Figure 13 is an illustration similar to another example of Figure 9, in which the UE moves back into the cell of the RAN that suspended the RRC connection and moves again outside of the cell.
圖14、15及16為說明當UE與RAN之間的RRC連接中止時用於在不同情形中處置網路中之下行鏈路(DL)資料之實例方法的訊息序列 圖。 14, 15 and 16 are message sequences illustrating an example method for handling downlink (DL) data in a network in different situations when the RRC connection between the UE and the RAN is aborted. Figure.
圖17、18及19展示說明實例RRC重新啟動方法之訊息序列圖,該方法用於處置用於與RAN具有中止RRC連接之UE的使用者平面資料傳送之回復。 17, 18 and 19 show a message sequence diagram illustrating an example RRC restart method for handling a reply for user plane data transfer for a UE having a RRC connection with the RAN.
圖20展示說明在實例情形1中處置RRC連接中止之方法的訊息序列圖。 20 shows a message sequence chart illustrating a method of handling an RRC Connection Abort in Example Scenario 1.
圖21展示說明在實例情形2中處置RRC連接中止之方法的訊息序列圖。 21 shows a message sequence chart illustrating a method of handling an RRC Connection Abort in Example Scenario 2.
圖22展示說明在實例情形3中處置RRC連接中止之方法的訊息序列圖。 22 shows a message sequence chart illustrating a method of handling an RRC Connection Abort in Example Scenario 3.
圖23展示說明在實例情形4中處置RRC連接中止之方法的訊息序列圖。 23 shows a message sequence diagram illustrating a method of handling an RRC Connection Abort in Example Scenario 4.
圖24展示說明在實例情形5中處置RRC連接中止之方法的訊息序列圖。 24 shows a message sequence chart illustrating a method of handling an RRC Connection Abort in Example Scenario 5.
圖25展示說明在實例情形6中處置RRC連接中止之方法的訊息序列圖。 25 shows a message sequence chart illustrating a method of handling an RRC Connection Abort in Example Scenario 6.
圖26展示說明在實例情形7中處置RRC連接中止之方法的訊息序列圖。 26 shows a message sequence chart illustrating a method of handling an RRC Connection Abort in Example Scenario 7.
圖27展示說明用於行動性程序之代表性情形之實例的訊息序列圖。 Figure 27 shows a message sequence diagram illustrating an example of a representative scenario for an active procedure.
圖28展示說明在實例情形10中處置RRC連接中止之方法的訊息序列圖。 28 shows a message sequence diagram illustrating a method of handling an RRC Connection Abort in Example Scenario 10.
圖29展示說明在實例情形11中處置RRC連接中止之方法的訊息序列圖。 29 shows a message sequence chart illustrating a method of handling an RRC Connection Abort in Example Scenario 11.
圖30展示說明在實例情形13中處置RRC連接中止之方法的訊息序列圖。 30 shows a message sequence diagram illustrating a method of handling an RRC Connection Abort in Example Scenario 13.
圖31展示說明在實例情形14中處置RRC連接中止之方法的訊息序列圖。 31 shows a message sequence diagram illustrating a method of handling RRC Connection Abort in Example Scenario 14.
圖32展示說明在實例情形15中處置RRC連接中止之方法的訊息序列圖。 32 shows a message sequence diagram illustrating a method of handling an RRC Connection Abort in Example Scenario 15.
圖33展示說明在實例情形16中處置RRC連接中止之方法的訊息序列圖。 33 shows a message sequence diagram illustrating a method of handling an RRC Connection Abort in an Example Scenario 16.
許多UE應用程式要求或受益於所謂的永遠開啟連接性,使得當使用UE及在其上執行之應用程式時向使用者遞送無縫及連續連接體驗。儘管無縫性之出現以服務層級向使用者呈現,但此實際上可在無處於應用層以下之所有協定層級之永久或連續連接性的情況下實現。實情為,狀況可為基於規則性或按需要建立及釋放連接以便在需要時遞送使用者資料但在干擾時段期間允許UE中之某一功率效率或系統效率節省。然而,此等連接之頻繁建立及釋放亦可需要系統資源之顯著使用或導致網路內之額外發信號負載,且相關聯之系統資源及控制負擔可變大。對於某一應用程式訊務,此可抵消使用此「按需要」連接建立策略之功率或系統效率益處。因此需要能夠減少此等系統資源及控制負擔之系統及方法,使得當試圖經由通信網路以應用層級遞送無縫使用者或服務體驗時改良總系統及功率效率。 Many UE applications require or benefit from so-called always-on connectivity, which delivers a seamless and continuous connectivity experience to the user when using the UE and the applications executing thereon. Although the emergence of seamlessness is presented to the user at the service level, this can actually be achieved without permanent or continuous connectivity at all of the contract levels below the application layer. The fact is that the condition may be based on regularity or establishing and releasing connections as needed to deliver user data when needed but to allow for some power efficiency or system efficiency savings in the UE during the interference period. However, the frequent establishment and release of such connections may also require significant use of system resources or additional signal loading within the network, and the associated system resources and control burden may vary. For an application traffic, this can offset the power or system efficiency benefits of using this "on-demand" connection to establish a policy. There is therefore a need for systems and methods that are capable of reducing such system resources and control burdens such that overall system and power efficiency are improved when attempting to deliver a seamless user or service experience at the application level via a communication network.
應用程式類型、服務及無線通信系統中之服務遞送的構件之過多的盛行導致呈現至無線通信網路以用於遞送的資料訊務分佈及統計之對應過多。因此無線通信網路較不能夠預測訊務概況及分佈,且必須經設計以調適連接及經指派傳輸資源以適應動態地變化(可能「叢發」)之訊務負載。 Excessive prevalence of application types, services, and service delivery components in wireless communication systems results in excessive correspondence of data traffic distribution and statistics presented to the wireless communication network for delivery. Wireless communication networks are therefore less able to predict traffic profiles and distributions, and must be designed to adapt connections and assigned transmission resources to accommodate dynamically changing (possibly "clustering") traffic loads.
為了如此進行,無線無線電存取網路可包括動態排程,使得可迅速回應於資料需要(例如,資料緩衝狀態)而改變經指派共用無線電 資源之數量。此動態排程通常按1毫秒至幾毫秒之時間標度操作。在此以上之時間標度處(在100ms至幾秒之區中操作),無線通信網路亦經常使用狀態機定向之程序來調適無線電連接狀態或子狀態以適應所觀察訊務活動程度。無線電連接狀態或子狀態可在眾多方式上不同,包括提供之連接性程度、保留或用於連接之系統資源的數量,及消耗之UE電池電力的量。 In order to do so, the wireless radio access network may include dynamic scheduling such that the assigned shared radio can be changed quickly in response to data needs (eg, data buffer status). The amount of resources. This dynamic schedule typically operates on a scale of 1 millisecond to a few milliseconds. At the above time scale (operating in the 100ms to a few seconds zone), the wireless communication network also often uses state machine oriented procedures to adapt the radio connection state or substate to accommodate the observed traffic activity. The radio connection state or sub-state can vary in a number of ways, including the degree of connectivity provided, the amount of system resources reserved or used for the connection, and the amount of UE battery power consumed.
連接性層級可特性化為各種連接性屬性之組合,該等連接性屬性諸如: The connectivity hierarchy can be characterized as a combination of various connectivity properties such as:
‧位置細微度:無線通信網路追蹤UE之當前位置的準確度(例如,針對較活動UE至小區層級,或針對較不活動UE至僅小區群組) ‧ Location granularity: The accuracy with which the wireless communication network tracks the current location of the UE (eg, for a more active UE to cell level, or for a less active UE to a cell only group)
‧行動性控制:改變UE與之相關聯之小區的決策可由網路(網路控制行動性)或由UE(UE控制行動性)進行。在網路控制行動性之狀況下,UE可經指示以執行量測且向網路報告量測結果以便輔助網路進行執行交遞的決策。一旦作出交遞決策,網路通常將在藉由發送交遞命令指示UE改變小區之前準備目標小區中之任何必要資源。在UE控制行動性之狀況下,UE將對相鄰小區執行量測且在進行執行小區重新選擇之決策時使用此等量測。網路可藉由在廣播系統資訊中發送各種小區重新選擇參數(例如,臨限、偏移等)來控制決策程序。網路控制行動性(交遞)比UE控制行動性需要更多空中發信號、網路內部發信號及網路處理資源。 ‧ Mobility Control: The decision to change the cell with which the UE is associated may be made by the network (network control mobility) or by the UE (UE controlling mobility). In the case of network control mobility, the UE may be instructed to perform measurements and report measurement results to the network to assist the network in making decisions to perform the handover. Once a handover decision is made, the network will typically prepare any necessary resources in the target cell before instructing the UE to change the cell by sending a handover command. In the case where the UE controls mobility, the UE will perform measurements on neighboring cells and use such measurements in making a decision to perform cell reselection. The network can control the decision making process by transmitting various cell reselection parameters (e.g., threshold, offset, etc.) in the broadcast system information. Network control mobility (delivery) requires more air signaling, intra-network signaling, and network processing resources than UE control mobility.
‧經指派資源:對UE可用以用於執行通信之無線電傳輸資源的存在、缺乏、類型或量,其隨預期活動層級而變。 ‧ Assigned Resources: The presence, absence, type, or amount of radio transmission resources available to the UE for performing communications, as a function of the expected activity level.
‧Tx/Rx就緒:由UE消耗之功率經常隨其傳輸或接收之「就緒」而變。舉例而言,若資料可在任何給定時刻到達則UE必須永久地啟動其接收器以便自基地台接收下行鏈路通信,從而導致高功率消耗及電池汲取。為了節省電力,經常使用不連續接收(DRX),從而允許UE 在某些時間「睡眠」且關閉其接收器。基地台(BS)必須在判定其將能夠成功地遞送資料至UE之時間時考慮UE之DRX型樣。DRX型樣之活動循環經常隨經指派無線電連接狀態或子狀態而變化。 ‧ Tx/Rx Ready: The power consumed by the UE is often a function of the “ready” of its transmission or reception. For example, if the data can arrive at any given time, the UE must permanently activate its receiver to receive downlink communications from the base station, resulting in high power consumption and battery grabbing. In order to save power, discontinuous reception (DRX) is often used, allowing the UE to "sleep" at certain times and turn off its receiver. The base station (BS) must consider the DRX pattern of the UE when it is determined that it will be able to successfully deliver the data to the UE. The DRX-type active cycle often varies with the assigned radio connection state or sub-state.
‧建立之介面或承載:端間通信(例如,自UE朝向諸如網際網路之外部網路至核心網路閘道或出口節點)可要求在所有參與網路節點或實體之間建立使用者特定連接(或承載)。此等介面中之一些的建立可與隨當前活動層級而變之無線電連接狀態或子狀態相關聯。 ‧ Established interface or bearer: Inter-terminal communication (eg, from the UE towards an external network such as the Internet to a core network gateway or egress node) may require user-specific establishment between all participating network nodes or entities Connected (or carried). The establishment of some of these interfaces may be associated with a radio connection state or sub-state that varies with the current active level.
本文中揭示用於無線通信系統中以中止及處置用於攜載UE與RAN之間的使用者平面及控制平面資料的無線電資源控制(RRC)連接之重新啟動的方法、裝置及軟體。本文中亦揭示用於處置UE(用於其之RRC連接經中止)之行動性控制及下行鏈路資料的方法、裝置及軟體。 Methods, apparatus, and software are disclosed herein for use in a wireless communication system to suspend and handle a restart of a Radio Resource Control (RRC) connection for carrying user plane and control plane data between a UE and a RAN. Also disclosed herein are methods, apparatus, and software for handling mobility control and downlink data for a UE (for which the RRC connection is aborted).
在本發明之上下文中,與RRC連接有關之術語「中止(suspending、suspend或suspension)」意謂儲存與RRC連接(或儲存RRC連接資料)及以下中之一或多者有關的訊文:‧抑制使用者平面資料在行動器件與RAN節點之間的傳輸但行動器件仍能夠自RAN節點接收傳呼及/或自RAN節點接收下行鏈路資料之通知;‧RAN節點指示行動器件執行與閒置模式功能相同或類似之功能(例如,可與在正常或非中止RRC連接模式中使用之傳呼及行動性程序不同的傳呼及行動性程序);及‧釋放與RAN節點與行動器件之間的RRC連接相關聯之空中介面或無線電鏈路或無線電資源但行動器件仍能夠自RAN節點接收傳呼及/或自RAN節點接收下行鏈路資料之通知。 In the context of the present invention, the term "suspending, suspend or suspension" in relation to an RRC connection means storing a message relating to one or more of the RRC connection (or storing RRC connection data) and: Suppressing transmission of user plane data between the mobile device and the RAN node but the mobile device is still capable of receiving paging from the RAN node and/or receiving notification of downlink data from the RAN node; ‧ RAN node indicating mobile device execution and idle mode functions Same or similar functionality (eg, paging and mobility procedures that may be different from paging and mobility procedures used in normal or non-suspended RRC connection mode); and ‧ release associated with RRC connection between RAN node and mobile device The air bearer or radio link or radio resource is coupled to the mobile device but the mobile device is still capable of receiving a paging from the RAN node and/or receiving a notification of downlink data from the RAN node.
RRC連接資料或資訊(其可替代地稱作RRC訊文資料)可包括與RRC連接有關之參數或其他資訊或與RRC層或其他層有關之較一般參 數。舉例而言,其可包括與無線電承載之當前組態、無線電資源、暫時小區識別符、安全性參數或密鑰、MAC組態、實體層組態以及量測及報告組態有關的參數。其亦可包括與RRC層或諸如實體層、MAC層、RLC層及PDCP層之其他層有關的資料。安全性參數或密鑰可(例如)包括Kasme、Kenb、KRRCenc、KRRCint、KRRCUPenc、完整性演算法、加密演算法及無線電承載COUNT值。 The RRC connection data or information (which may alternatively be referred to as RRC message material) may include parameters or other information related to the RRC connection or more general parameters related to the RRC layer or other layers. For example, it may include parameters related to the current configuration of the radio bearer, radio resources, temporary cell identifiers, security parameters or keys, MAC configuration, physical layer configuration, and measurement and reporting configuration. It may also include material related to the RRC layer or other layers such as the physical layer, the MAC layer, the RLC layer, and the PDCP layer. The security parameters or keys may, for example, include K asme , K enb , K RRCenc , K RRCint , K RRCUPenc , integrity algorithms, encryption algorithms, and radio bearer COUNT values.
根據第一態樣,提供一種在用於與無線電存取網路(RAN)一起使用之行動器件中實施的方法,其包含:該行動器件將關於與RAN之無線電資源控制(RRC)連接的指示符發送至RAN;其中該指示符指示行動器件中止或釋放RRC連接之偏好。 According to a first aspect, there is provided a method implemented in a mobile device for use with a Radio Access Network (RAN), comprising: an indication that the mobile device is to be connected to a Radio Resource Control (RRC) of the RAN The token is sent to the RAN; wherein the indicator indicates a preference for the mobile device to suspend or release the RRC connection.
根據第二態樣,提供一種用於與無線電存取網路(RAN)一起使用之行動器件,該行動器件經組態以:將關於與RAN之無線電資源控制(RRC)連接的指示符發送至RAN;其中該指示符指示行動器件中止或釋放RRC連接之偏好。 According to a second aspect, a mobile device for use with a Radio Access Network (RAN) is provided, the mobile device being configured to: send an indicator to a Radio Resource Control (RRC) connection to the RAN to RAN; wherein the indicator indicates a preference for the mobile device to suspend or release the RRC connection.
通常,指示符為中止或釋放RRC連接之偏好。 Typically, the indicator is a preference to suspend or release the RRC connection.
指示符可包括於由行動器件發送至RAN中之RAN節點中的請求訊息中。或者或另外,指示符可包括於由行動器件發送至RAN中之RAN節點中的能力訊息中。 The indicator may be included in the request message sent by the mobile device to the RAN node in the RAN. Alternatively or additionally, the indicator may be included in a capability message sent by the mobile device to the RAN node in the RAN.
較佳地,行動器件自RAN接收命令訊息;且行動器件回應於命令訊息而進行以下中之至少一者:釋放RRC連接;及中止RRC連接。 Preferably, the mobile device receives the command message from the RAN; and the mobile device performs at least one of: releasing the RRC connection in response to the command message; and suspending the RRC connection.
可回應於指示符之發送而接收命令訊息。 The command message can be received in response to the transmission of the indicator.
較佳地,RRC連接之中止包括行動器件儲存用於RRC連接之RRC 連接資料。所儲存RRC連接資料可由行動器件使用以重新建立中止之RRC連接。 Preferably, the RRC connection suspension includes the mobile device storing the RRC for the RRC connection. Connection data. The stored RRC connection data can be used by the mobile device to re-establish the suspended RRC connection.
所儲存RRC連接資料可包含表示以下中之一或多者的資料:‧RRC連接中之無線電承載的組態;‧與RRC連接及/或RRC層有關之安全性參數,其一般且未必對於中止之RRC連接為特定的;‧暫時小區識別符;‧MAC組態;‧實體層組態;及‧量測及報告組態。 The stored RRC connection data may include data indicating one or more of the following: ‧ configuration of the radio bearer in the RRC connection; ‧ security parameters related to the RRC connection and/or the RRC layer, which are generally and not necessarily for abort The RRC connection is specific; ‧ temporary cell identifier; ‧ MAC configuration; ‧ physical layer configuration; and ‧ measurement and report configuration
在一實例中,可回應於在行動器件處符合RRC連接中止準則而發送指示符。 In an example, the indicator can be sent in response to complying with the RRC Connection Abort criteria at the mobile device.
通常,RRC連接中止準則包含以下中之至少一者:行動器件處之計時器的期滿;已在一時段內未自RAN接收使用者平面資料或無使用者平面資料發送至RAN;已在一時段內不預期自RAN接收使用者平面資料或將使用者平面資料發送至RAN;行動器件之輸入功能或輸出功能的狀態;行動器件之一或多個應用程式之狀態;及在行動器件處對RRC層之較高層指示。 Generally, the RRC connection suspension criterion includes at least one of: expiration of a timer at the mobile device; no user plane data is received from the RAN or no user plane data is transmitted to the RAN in a period of time; The user plane data is not expected to be received from the RAN or the user plane data is sent to the RAN; the state of the input or output function of the mobile device; the state of one or more applications of the mobile device; and at the mobile device Higher layer indication of the RRC layer.
較高層指示可來自應用層或來自非存取層(NAS)層。 The higher layer indication can come from the application layer or from the non-access layer (NAS) layer.
較佳地,行動器件回應於以下各者而起始中止之RRC連接的重新建立:行動器件經由RRC連接之使用者平面產生上行鏈路資料;或在行動器件處接收傳呼;或 在行動器件處接收RAN或核心網路(CN)緩衝下行鏈路資料以發送至行動器件的通知。 Preferably, the mobile device initiates the re-establishment of the RRC connection in response to the following: the mobile device generates uplink data via the user plane of the RRC connection; or receives the paging at the mobile device; or A notification is received at the mobile device that the RAN or core network (CN) buffers the downlink data for transmission to the mobile device.
行動器件可經組態以根據LTE或LTE進階協定與RAN通信。 The mobile device can be configured to communicate with the RAN in accordance with an LTE or LTE advanced protocol.
RAN可經組態以根據LTE或LTE進階協定與行動器件通信。 The RAN can be configured to communicate with mobile devices in accordance with LTE or LTE advanced protocols.
一或多個RAN節點可為(若干)eNode B。 One or more RAN nodes may be (several) eNode Bs.
根據第三態樣,提供一種在用於與行動器件一起使用之無線電存取網路(RAN)之節點中實施的方法,該方法包含:在RAN節點處自行動器件接收用於重新建立由另一RAN節點中止之無線電資源控制(RRC)連接的請求;RAN節點試圖擷取與中止之RRC連接有關的RRC連接資料;及RAN節點進行以下中之一者:若RRC連接有效,則將連接重新建立命令訊息發送至行動器件;及若RRC連接無效,則將連接重新建立拒絕訊息發送至行動器件。 According to a third aspect, there is provided a method implemented in a node for a Radio Access Network (RAN) for use with a mobile device, the method comprising: receiving at a RAN node from a mobile device for re-establishment by another a RAN node suspended radio resource control (RRC) connection request; the RAN node attempts to retrieve RRC connection data related to the suspended RRC connection; and the RAN node performs one of the following: if the RRC connection is valid, the connection is re-established The setup command message is sent to the mobile device; and if the RRC connection is invalid, the connection re-establishment rejection message is sent to the mobile device.
根據第四態樣,提供一種用於與行動器件一起使用之無線電存取網路(RAN)之節點,該RAN節點經組態以:接收用於重新建立由另一RAN節點中止之無線電資源控制(RRC)連接的請求;試圖擷取與中止之RRC連接有關的RRC連接資料;若RRC連接有效,則將連接重新建立命令訊息發送至行動器件;及若RRC連接無效,則將連接重新建立拒絕訊息發送至行動器件。 According to a fourth aspect, there is provided a node for a Radio Access Network (RAN) for use with a mobile device, the RAN node configured to: receive radio resource control for reestablishing suspension by another RAN node (RRC) connection request; attempting to retrieve RRC connection data related to the suspended RRC connection; if the RRC connection is valid, transmitting a connection re-establishment command message to the mobile device; and if the RRC connection is invalid, the connection re-establishment rejection The message is sent to the mobile device.
在一些實例中,連接重新建立命令訊息可為RRC連接重新建立命令訊息或RRC連接重組態訊息中之一者。其他新的或現有3GPP訊息亦為可能的。類似地,連接重新建立拒絕訊息可為RRC連接重新建立拒絕訊息。其他新的或現有3GPP訊息亦為可能的。 In some examples, the connection re-establishment command message can be one of an RRC connection re-establishment command message or an RRC connection reconfiguration message. Other new or existing 3GPP messages are also possible. Similarly, the connection re-establishment reject message can re-establish a reject message for the RRC connection. Other new or existing 3GPP messages are also possible.
通常,RAN節點藉由參考RRC連接資料判定中止之RRC連接是否有效。 Generally, the RAN node determines whether the suspended RRC connection is valid by referring to the RRC connection data.
RAN節點可藉由以下中之至少一者判定中止之RRC連接是否有效:‧判定計時器未期滿;及‧是否擷取到RRC連接資料。 The RAN node may determine, by at least one of the following, whether the suspended RRC connection is valid: ‧ the determination timer has not expired; and ‧ whether the RRC connection data is retrieved.
在一實例中,自另一網路組件擷取RRC連接資料。另一網路組件為RAN網路組件(諸如RAN節點),或核心網路(CN)網路組件(諸如行動性管理實體(MME))。然而,可能可使用其他CN網路組件,諸如伺服閘道(S-GW)。 In one example, the RRC connection data is retrieved from another network component. Another network component is a RAN network component (such as a RAN node), or a core network (CN) network component (such as a Mobility Management Entity (MME)). However, other CN network components, such as a servo gateway (S-GW), may be used.
在另一實例中,RRC連接資料可由另一RAN節點儲存於RAN節點中之記憶體器件中且RAN節點自記憶體器件擷取該RRC連接資料。 In another example, the RRC connection profile may be stored by another RAN node in a memory device in the RAN node and the RAN node retrieves the RRC connection profile from the memory device.
RAN節點可回應於行動器件回應傳呼請求或下行鏈路資料之通知而擷取所儲存RRC連接資料且重新建立中止之RRC連接。 The RAN node may retrieve the stored RRC connection data and re-establish the suspended RRC connection in response to the mobile device responding to the paging request or the notification of the downlink data.
RAN節點可回應於自行動器件接收用於重新建立中止之RRC連接的重新建立請求訊息而擷取所儲存RRC連接資料且重新建立中止之RRC連接。 The RAN node may retrieve the stored RRC connection profile and re-establish the suspended RRC connection in response to the re-establishment request message from the mobile device receiving the RRC connection for reestablishing the suspension.
一或多個RAN節點可經組態以根據LTE或LTE進階協定與行動器件通信。 One or more RAN nodes may be configured to communicate with the mobile device in accordance with an LTE or LTE advanced protocol.
該一或多個RAN節點可為(若干)eNode B。 The one or more RAN nodes may be (several) eNode Bs.
根據第五態樣,提供一種在用於與行動器件一起使用之無線電存取網路(RAN)之節點中實施的方法,該方法包含:RAN節點將與行動器件之RRC連接有關的無線電資源控制(RRC)連接資料傳輸至至少一其他網路組件;及RAN節點中止與行動器件之RRC連接。 According to a fifth aspect, there is provided a method implemented in a node for a Radio Access Network (RAN) for use with a mobile device, the method comprising: radio resource control by a RAN node relating to an RRC connection of a mobile device The (RRC) connection data is transmitted to at least one other network component; and the RAN node suspends the RRC connection with the mobile device.
根據第六態樣,提供一種用於與行動器件一起使用之無線電存 取網路(RAN)之節點,該RAN節點經組態以:將與行動器件之RRC連接有關的無線電資源控制(RRC)連接資料傳輸至至少一其他網路組件;及中止與行動器件之RRC連接。 According to a sixth aspect, a radio storage for use with a mobile device is provided a node of a network (RAN) configured to: transmit radio resource control (RRC) connection data related to an RRC connection of the mobile device to at least one other network component; and suspend RRC with the mobile device connection.
至少一其他網路組件可為RAN網路組件(諸如RAN節點),或CN網路組件(諸如MME)。然而,其他網路組件可為另一CN網路組件(諸如S-GW)為可能的。 At least one other network component can be a RAN network component (such as a RAN node), or a CN network component (such as an MME). However, other network components may be possible for another CN network component, such as an S-GW.
RRC連接資料亦可儲存於RAN節點處。 The RRC connection data can also be stored at the RAN node.
較佳地,傳輸至其他網路組件之RRC連接資料可由RAN節點或另一RAN節點使用以重新建立中止之RRC連接。 Preferably, the RRC connection data transmitted to other network components can be used by the RAN node or another RAN node to re-establish the suspended RRC connection.
RRC連接資料可包含表示以下中之一或多者的資料:‧RRC連接中之無線電承載的組態;‧與RRC連接有關或對於RRC連接不特定的安全性參數;‧暫時小區識別符;‧MAC組態;‧實體層組態;及‧量測及報告組態。 The RRC connection profile may contain data indicating one or more of the following: ‧ configuration of the radio bearer in the RRC connection; ‧ security parameters related to the RRC connection or not specific to the RRC connection; ‧ temporary cell identifier; MAC configuration; ‧ physical layer configuration; and ‧ measurement and report configuration
RRC連接資料可經標示以指示RRC連接之中止。 The RRC connection profile may be flagged to indicate that the RRC connection is aborted.
較佳地,回應於符合中止準則,RAN節點將RRC連接資料傳輸至其他網路組件且中止RRC連接。 Preferably, in response to the suspension criteria, the RAN node transmits the RRC connection data to other network components and suspends the RRC connection.
中止準則包含以下中之至少一者:‧RAN節點處之計時器的期滿;‧指示建立之RRC連接之釋放的訊息由RAN節點傳輸至行動器件;‧在RAN節點處自行動器件接收到中止請求訊息;‧已在一時段內未自行動器件接收使用者平面資料或無使用者平 面資料發送至行動器件;‧已在一時段內不預期自行動器件接收使用者平面資料或將使用者平面資料發送至行動器件;及‧對RRC層之較高層指示 The suspension criterion includes at least one of: ‧ expiration of the timer at the RAN node; ‧ a message indicating the release of the established RRC connection is transmitted by the RAN node to the mobile device; ‧ receiving the suspension from the mobile device at the RAN node Request message; ‧ has not received user plane data from the mobile device during a period of time or no user level The data is sent to the mobile device; ‧ the user plane data is not expected to be received from the mobile device or the user plane data is sent to the mobile device during a period of time; and ‧ the higher layer indication of the RRC layer
較高層指示可來自應用層或非存取層(NAS)層。 The higher layer indication can come from the application layer or the non-access layer (NAS) layer.
通常,RRC連接資料包含行動器件之識別。 Typically, the RRC connection data contains the identification of the mobile device.
RRC連接資料可包含當RRC連接中止時伺服行動器件之小區的識別。 The RRC connection profile may include the identification of the cell of the servo mobile device when the RRC connection is aborted.
通常,RAN節點可發送訊息以告知任何其他RAN節點或核心網路(CN)節點RRC連接已中止且RRC連接資料儲存於其他網路組件中。 Typically, the RAN node may send a message to inform any other RAN node or core network (CN) node that the RRC connection has been aborted and the RRC connection data is stored in other network components.
較佳地,RRC連接資料傳輸至其他網路組件以用於儲存於其他網路組件處。 Preferably, the RRC connection data is transmitted to other network components for storage at other network components.
RAN可經組態以根據LTE或LTE進階協定與行動器件通信。 The RAN can be configured to communicate with mobile devices in accordance with LTE or LTE advanced protocols.
一或多個RAN節點可為(若干)eNode B。 One or more RAN nodes may be (several) eNode Bs.
根據第七態樣,提供一種在網路組件中之方法,該方法包含:自第一無線電存取網路(RAN)節點接收無線電資源控制(RRC)連接資料,RRC連接資料與第一RAN節點與行動器件之間的RRC連接有關,RRC連接由或將由第一RAN節點中止;及儲存RRC連接資料。 According to a seventh aspect, a method in a network component is provided, the method comprising: receiving radio resource control (RRC) connection data, RRC connection data, and a first RAN node from a first radio access network (RAN) node In connection with the RRC connection between the mobile devices, the RRC connection is or will be suspended by the first RAN node; and the RRC connection data is stored.
根據第八態樣,提供一種網路組件,其經組態以:自第一無線電存取網路(RAN)節點接收無線電資源控制(RRC)連接資料,RRC連接資料與第一RAN節點與行動器件之間的RRC連接有關,RRC連接由或將由第一RAN節點中止;及儲存RRC連接資料。 According to an eighth aspect, a network component is provided configured to: receive radio resource control (RRC) connection data from a first radio access network (RAN) node, RRC connection data and a first RAN node and action The RRC connection between the devices is related to, the RRC connection is or will be suspended by the first RAN node; and the RRC connection data is stored.
較佳地,網路組件可為RAN網路組件或CN網路組件。舉例而言,在網路組件為RAN網路組件的情況下其可為RAN節點,且在網路 組件為CN網路組件的情況下其可為MME。然而,CN網路組件可為S-GW為可能的。 Preferably, the network component can be a RAN network component or a CN network component. For example, in the case where the network component is a RAN network component, it can be a RAN node and is in the network. Where the component is a CN network component it may be an MME. However, the CN network component can be S-GW possible.
第一RAN節點可在MME之有效性區域中,其中其他網路組件為MME。 The first RAN node may be in the validity area of the MME, where the other network components are MMEs.
通常,所儲存RRC連接資料可由RAN節點擷取以重新建立與行動器件之中止之RRC連接。 Typically, the stored RRC connection data may be retrieved by the RAN node to re-establish an RRC connection with the mobile device.
RRC連接資料可由第一RAN節點、第二RAN節點或另一RAN節點(或第三RAN節點)擷取以重新建立與行動器件之中止之RRC連接。 The RRC connection profile may be retrieved by the first RAN node, the second RAN node, or another RAN node (or the third RAN node) to reestablish an RRC connection with the mobile device abort.
較佳地,RRC連接資料包含表示以下中之至少一者的資料:‧RRC連接中之無線電承載的組態;‧與RRC連接有關或對於RRC連接不特定的安全性參數;‧暫時小區識別符;‧MAC組態;‧實體層組態;及‧量測及報告組態。 Preferably, the RRC connection profile contains data indicating at least one of: ‧ configuration of the radio bearer in the RRC connection; ‧ security parameters related to the RRC connection or not specific to the RRC connection; ‧ temporary cell identifier ; ‧ MAC configuration; ‧ physical layer configuration; and ‧ measurement and report configuration
通常,RRC連接資料包含行動器件之識別。 Typically, the RRC connection data contains the identification of the mobile device.
RRC連接資料可包含當RRC連接中止時伺服行動器件之小區的識別。 The RRC connection profile may include the identification of the cell of the servo mobile device when the RRC connection is aborted.
根據第九態樣,提供一種在用於與行動器件一起使用之無線電存取網路(RAN)之節點中實施的方法,該方法包含:RAN節點將連接中止命令訊息發送至行動器件以中止與行動器件之RRC連接。 According to a ninth aspect, there is provided a method implemented in a node for a Radio Access Network (RAN) for use with a mobile device, the method comprising: the RAN node transmitting a connection abort command message to a mobile device to suspend RRC connection of mobile devices.
根據第十態樣,提供一種用於與行動器件一起使用之無線電存取網路(RAN)節點,該RAN節點經組態以:將連接中止命令訊息發送至UE以中止與UE之RRC連接。 According to a tenth aspect, a radio access network (RAN) node for use with a mobile device is provided, the RAN node configured to: send a connection abort command message to the UE to suspend an RRC connection with the UE.
在一實例中,可回應於在RAN節點處符合中止準則而發送連接 中止命令訊息。 In an example, the connection may be sent in response to meeting the abort criterion at the RAN node Suspend the command message.
中止準則可為以下中之至少一者:‧RAN節點處之計時器的期滿;‧在RAN節點處自行動器件接收到中止請求訊息;‧已在一時段內未自行動器件接收使用者平面資料或無使用者平面資料發送至行動器件;‧已在一時段內不預期自行動器件接收使用者平面資料或將使用者平面資料發送至行動器件;及‧對RRC層之較高層指示。較高層可為應用層或非存取層(NAS)層。 The suspension criterion can be at least one of: ‧ expiration of the timer at the RAN node; ‧ receiving the abort request message from the mobile device at the RAN node; ‧ having not received the user plane from the mobile device during a time period Data or no user plane data is sent to the mobile device; ‧ the user plane data is not expected to be received from the mobile device or the user plane data is sent to the mobile device; and ‧ the higher layer indication of the RRC layer. The higher layer can be an application layer or a non-access layer (NAS) layer.
回應於連接中止命令訊息,RAN節點可自行動器件接收應答訊息。應答訊息可包括來自行動器件之RRC層或媒體存取控制(MAC)層之至少一者的應答。 In response to the connection abort command message, the RAN node can receive an acknowledgement message from the mobile device. The response message may include a response from at least one of an RRC layer or a Medium Access Control (MAC) layer of the mobile device.
當RRC連接中止時,RAN節點可將行動器件之行動性控制釋放給行動器件。 When the RRC connection is aborted, the RAN node can release the mobility control of the mobile device to the mobile device.
RAN節點亦可儲存用於RRC連接之RRC連接資料。 The RAN node may also store RRC connection data for the RRC connection.
RAN節點可為eNodeB。 The RAN node can be an eNodeB.
根據第十一態樣,提供一種在用於與無線電存取網路(RAN)一起使用之行動器件中實施的方法,該方法包含:行動器件自RAN接收指示行動器件中止與RAN之RRC連接的連接中止命令訊息;及回應於連接中止命令訊息,行動器件中止RRC連接。 According to an eleventh aspect, there is provided a method implemented in a mobile device for use with a Radio Access Network (RAN), the method comprising: the mobile device receiving, from the RAN, an indication that the mobile device suspends an RRC connection with the RAN The abort command message is connected; and in response to the connection abort command message, the mobile device suspends the RRC connection.
根據第十二態樣,提供一種用於與無線電存取網路(RAN)一起使用之行動器件,該行動器件經組態以:自RAN接收指示行動器件中止與RAN之RRC連接的連接中止命令訊息;及 回應於連接中止命令訊息而中止RRC連接。 According to a twelfth aspect, a mobile device for use with a Radio Access Network (RAN) is provided, the mobile device being configured to: receive, from the RAN, a connection abort command indicating that the mobile device suspends an RRC connection with the RAN Message; and The RRC connection is aborted in response to the connection abort command message.
行動器件可將請求RRC連接之中止的連接中止請求訊息發送至RAN;且回應於連接中止請求訊息自RAN接收連接中止命令訊息。 The mobile device may send a connection suspension request message requesting the suspension of the RRC connection to the RAN; and receive a connection suspension command message from the RAN in response to the connection suspension request message.
可回應於在行動器件處符合中止準則而發送連接中止請求訊息。 The connection abort request message may be sent in response to meeting the suspension criteria at the mobile device.
中止準則可為以下中之至少一者:‧行動器件處之計時器的期滿;‧已在一時段內未自RAN接收使用者平面資料或無使用者平面資料發送至RAN;‧已在一時段內不預期自RAN接收使用者平面資料或將使用者平面資料發送至RAN;‧行動器件之輸入功能的狀態;‧行動器件之輸出功能的狀態;‧行動器件之一或多個應用程式之狀態;及‧在行動器件處對RRC層之較高層指示。 The suspension criterion may be at least one of: ‧ expiration of the timer at the mobile device; ‧ no user plane data received from the RAN or no user plane data sent to the RAN during a period of time; It is not expected to receive user plane data from the RAN or send user plane data to the RAN during the time period; ‧ state of the input function of the mobile device; ‧ state of the output function of the mobile device; ‧ one or more applications of the mobile device State; and ‧ a higher level indication of the RRC layer at the mobile device.
較高層可為行動器件之應用層或非存取層(NAS)層。 The higher layer can be the application layer or the non-access layer (NAS) layer of the mobile device.
回應於連接中止命令訊息,行動器件可向RAN節點發送應答訊息。 In response to the connection abort command message, the mobile device can send an acknowledgement message to the RAN node.
應答訊息可包括來自行動器件之RRC層或媒體存取控制(MAC)層之至少一者的應答。 The response message may include a response from at least one of an RRC layer or a Medium Access Control (MAC) layer of the mobile device.
當RRC連接中止時,行動器件可控制行動性。 When the RRC connection is aborted, the mobile device can control mobility.
行動器件可經組態以根據LTE或LTE進階協定與RAN通信。 The mobile device can be configured to communicate with the RAN in accordance with an LTE or LTE advanced protocol.
根據第十三態樣,提供一種在用於與行動器件一起使用之無線電存取網路(RAN)之節點中實施的方法,該方法包含:RAN節點自行動器件接收重新建立中止之RRC連接的連接重新建立請求訊息; 回應於連接重新建立請求訊息,RAN節點將連接重新建立命令訊息發送至行動器件;及回應於連接重新建立命令訊息,RAN節點自行動器件接收連接重新建立完成訊息。 According to a thirteenth aspect, there is provided a method implemented in a node for a radio access network (RAN) for use with a mobile device, the method comprising: the RAN node receiving a reestablishment aborted RRC connection from a mobile device Connection re-establishment request message; In response to the connection re-establishment request message, the RAN node sends a connection re-establishment command message to the mobile device; and in response to the connection re-establishment command message, the RAN node receives a connection re-establishment complete message from the mobile device.
根據第十四態樣,提供一種用於與行動器件一起使用之無線電存取網路(RAN)節點,該RAN節點經組態以:自UE接收重新建立中止之RRC連接的連接重新建立請求訊息;回應於連接重新建立請求訊息,將連接重新建立命令訊息發送至UE;及回應於連接重新建立命令訊息,自UE接收連接重新建立完成訊息。 According to a fourteenth aspect, a radio access network (RAN) node for use with a mobile device is provided, the RAN node configured to: receive a re-establishment request message for re-establishing an aborted RRC connection from a UE Sending a connection re-establishment command message to the UE in response to the connection re-establishment request message; and receiving a connection re-establishment completion message from the UE in response to the connection re-establishment command message.
連接重新建立命令訊息可為RRC連接重新建立命令訊息及RRC連接重組態訊息中之一者。 The connection re-establishment command message may be one of an RRC connection re-establishment command message and an RRC connection reconfiguration message.
連接重新建立完成訊息可為RRC連接重新建立完成訊息及RRC連接重組態完成訊息中之一者。 The connection re-establishment completion message may be one of an RRC connection re-establishment completion message and an RRC connection reconfiguration complete message.
RAN節點可為eNodeB。 The RAN node can be an eNodeB.
根據第十五態樣,提供一種在用於與無線電存取網路(RAN)一起使用之行動器件中實施的方法,該方法包含:行動器件將重新建立中止之RRC連接的連接重新建立請求訊息發送至RAN;回應於連接重新建立請求訊息,行動器件自RAN接收連接重新建立命令訊息;及回應於連接重新建立命令訊息,行動器件重新建立與RAN之RRC連接且將連接重新建立完成訊息發送至RAN。 According to a fifteenth aspect, there is provided a method implemented in a mobile device for use with a Radio Access Network (RAN), the method comprising: the mobile device re-establishing a suspended RRC connected connection re-establishment request message Transmitting to the RAN; in response to the connection re-establishment request message, the mobile device receives the connection re-establishment command message from the RAN; and in response to the connection re-establishment command message, the mobile device re-establishes the RRC connection with the RAN and sends a connection re-establishment completion message to RAN.
根據第十六態樣,提供一種用於與無線電存取網路(RAN)一起使用之行動器件,該行動器件經組態以: 將請求重新建立中止之RRC連接的連接重新建立請求訊息發送至RAN;回應於重新建立請求訊息,自RAN接收連接重新建立命令訊息;及回應於連接重新建立命令訊息,重新建立與RAN之RRC連接且將重新建立完成訊息發送至RAN。 According to a sixteenth aspect, a mobile device for use with a Radio Access Network (RAN) is provided, the mobile device being configured to: Sending a connection re-establishment request message requesting re-establishment of the suspended RRC connection to the RAN; receiving a connection re-establishment command message from the RAN in response to the re-establishment request message; and re-establishing an RRC connection with the RAN in response to the connection re-establishment command message And the re-establishment completion message is sent to the RAN.
可回應於在行動器件處符合重新建立準則而發送連接重新建立請求訊息。 The connection re-establishment request message may be sent in response to compliance with the re-establishment criteria at the mobile device.
重新建立準則可包括以下中之至少一者:‧行動器件經由RRC連接之使用者平面產生上行鏈路資料;‧在行動器件處接收傳呼;‧在行動器件處接收RAN或核心網路(CN)緩衝下行鏈路資料以發送至行動器件的通知;及‧行動器件重新選擇至另一小區。 The re-establishment criteria may include at least one of: ‧ the mobile device generates uplink data via the RRC connected user plane; ‧ receives the paging at the mobile device; ‧ receives the RAN or core network (CN) at the mobile device The downlink data is buffered for notification to the mobile device; and the mobile device reselects to another cell.
連接重新建立命令訊息可為RRC連接重新建立命令訊息及RRC連接重組態訊息中之一者。 The connection re-establishment command message may be one of an RRC connection re-establishment command message and an RRC connection reconfiguration message.
連接重新建立完成訊息可為RRC連接重新建立完成訊息及RRC連接重組態完成訊息中之一者。 The connection re-establishment completion message may be one of an RRC connection re-establishment completion message and an RRC connection reconfiguration complete message.
行動器件可經組態以根據LTE或LTE進階協定與RAN通信。 The mobile device can be configured to communicate with the RAN in accordance with an LTE or LTE advanced protocol.
較佳地,可按需要組合以上態樣中之一或多者。另外,在適當時任何態樣之特徵可與另一態樣組合。 Preferably, one or more of the above aspects may be combined as needed. In addition, any aspect of the features may be combined with another aspect as appropriate.
長期演進(LTE)為用於無線通信網路技術之第三代合作夥伴計劃(3GPP)標準。圖1中展示支援根據LTE之通信之無線通信系統100的說明性實例。 Long Term Evolution (LTE) is the Third Generation Partnership Project (3GPP) standard for wireless communication network technologies. An illustrative example of a wireless communication system 100 that supports communication in accordance with LTE is shown in FIG.
在支援LTE之無線通信系統之情境中闡述以下詳細描述,但應理解,本發明之可應用性決不限於LTE。實際上,本文中所揭示之UE- RAN RRC連接中止及其處置之廣泛概念同樣適用於支援其他技術及協定(無論當前已知或尚未設想)之其他無線通信系統中。在此方面,本發明決不應限於以下說明性實施、圖式及技術,而可在不脫離所附申請專利範圍之範疇,應有注意給予所有等效物的情況下經修改且用於其他無線通信系統中。 The following detailed description is set forth in the context of a wireless communication system supporting LTE, but it should be understood that the applicability of the present invention is by no means limited to LTE. In fact, the UE disclosed in this article- The broad concept of RAN RRC connection suspension and its handling is equally applicable to other wireless communication systems that support other technologies and protocols, whether currently known or not yet contemplated. In this regard, the present invention is in no way limited to the following description of the embodiments, the drawings and the accompanying drawings, In a wireless communication system.
LTE描述用於演進或進階蜂巢式寬頻技術中之無線通信系統的複數個要求。此等要求包括提供演進通用行動電信系統(UMTS)陸地無線電存取網路(E-UTRAN),亦即RAN 102。如圖1中所展示,RAN 102提供高速無線電存取技術以支援UE 101與充當RAN 102之節點的一或多個BS之間的無線通信以符合增加之網路需求,包括改良使用者輸貫量及網路容量、減少潛時,及增加行動性。圖1中所展示之LTE RAN 102包含充當節點基地台(BS)之一節點類型,亦即,演進節點B(eNB)102a,b,...n進階LTE設備,其支援E-UTRAN空中介面,且可提供BS、無線存取點及其他系統及器件之功能性的至少一些,BS、無線存取點及其他系統及器件中之一些可比傳統無線電信系統中之等效設備更演進。術語eNB或存取器件可在本文中使用以指代現有或進階之任何器件,該器件可用以獲得對網路之存取。此進階或下一代設備在本文中可稱作長期演進(LTE)設備。 LTE describes a number of requirements for a wireless communication system in an evolved or advanced cellular broadband technology. These requirements include the provision of the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN), also known as the RAN 102. As shown in FIG. 1, RAN 102 provides high speed radio access technology to support wireless communication between UE 101 and one or more BSs acting as nodes of RAN 102 to comply with increased network requirements, including improved user access. Volume and network capacity, reduce latency, and increase mobility. The LTE RAN 102 shown in Figure 1 includes a node type that acts as a Node Base Station (BS), that is, an evolved Node B (eNB) 102a, b, ... n advanced LTE device that supports E-UTRAN air Interfaces, and at least some of the functionality of BSs, wireless access points, and other systems and devices may be provided. Some of the BSs, wireless access points, and other systems and devices may evolve more than equivalent devices in conventional wireless telecommunications systems. The term eNB or access device can be used herein to refer to any existing or advanced device that can be used to gain access to the network. This advanced or next generation device may be referred to herein as a Long Term Evolution (LTE) device.
eNB可支援經由一或多個小區與UE的通信。eNB與UE之間的通信可包含經由eNB之單一小區的通信或可包含經由一個以上小區之同時或非同時通信。 The eNB may support communication with the UE via one or more cells. The communication between the eNB and the UE may include communication of a single cell via the eNB or may include simultaneous or non-simultaneous communication via more than one cell.
在一些實施中,eNB之功能性可自含有於一實體節點或實體內,而在其他實施中,該功能性可分佈於其之間具有互連的一個以上實體節點或實體之間。 In some implementations, the functionality of an eNB may be self-contained within an entity node or entity, while in other implementations, the functionality may be distributed between more than one entity node or entity having an interconnection therebetween.
如圖1中可見,LTE無線通信網路100在UE 101與RAN 102之eNB 102a之間提供Uu無線電介面以促進其之間的無線電通信。 As can be seen in Figure 1, the LTE wireless communication network 100 provides a Uu radio interface between the UE 101 and the eNB 102a of the RAN 102 to facilitate radio communication therebetween.
LTE使用用於核心網路(CN)103之演進封包核心(EPC)網路架構以支援RAN 102(在LTE的狀況下為E-UTRAN)。因此,如圖1中所展示,eNB RAN節點102a,b...n與EPC CN 103(下文描述)中之一或多個節點形成連接。EPC網路架構傳送諸如傳輸控制協定(TCP)/網際網路協定(IP)之協定以用於以端間服務品質(QoS)支援基於IP之服務,諸如語音、視訊、其他媒體及訊息傳遞。EPC網路架構亦實現至其他固定線之改良連接及交遞以及具有改良行動性之無線存取技術。 LTE uses an evolved packet core (EPC) network architecture for core network (CN) 103 to support RAN 102 (E-UTRAN in the case of LTE). Thus, as shown in FIG. 1, the eNB RAN nodes 102a, b...n form a connection with one or more of the EPC CN 103 (described below). The EPC network architecture conveys protocols such as Transmission Control Protocol (TCP)/Internet Protocol (IP) for supporting IP-based services such as voice, video, other media, and messaging with inter-terminal quality of service (QoS). The EPC network architecture also enables improved connectivity and delivery to other fixed lines and improved mobility wireless access technologies.
耦合至EPC CN 103之LTE無線電存取網路102(E-UTRAN)可進一步耦合至外部封包資料網路,諸如公用網際網路104。 The LTE Radio Access Network 102 (E-UTRAN) coupled to the EPC CN 103 can be further coupled to an external packet data network, such as the public internet network 104.
圖1中所展示之EPC CN 103包含三個節點類型:在核心網路內投送使用者平面資料之伺服閘道(SGW)103a,處置UE與核心網路之間的行動性及連接控制之行動性管理端點(MME)103b,及在核心網路與外部網路之間投送資料之封包閘道(PGW)103c入口/出口節點。在UE 101、eNB 102a與CN 103之間的通信工作階段期間,在RAN 102與CN 103之間形成「S1」網路介面,包括eNB 102a與MME 103b之間的控制平面承載連接「S1-MME」(有時稱作「S1c」)「S1-MME」,及eNB 102a與SGW 103a之間的使用者平面承載連接「S1u」。SGW 103a與PGW 103c之間的「S5/S8」介面在其之間提供使用者平面通信。MME 103b可(例如)經由「S11」介面連接至SGW 103a。 The EPC CN 103 shown in Figure 1 comprises three node types: a Servo Gateway (SGW) 103a that delivers user plane data within the core network, handling mobility and connection control between the UE and the core network. An active management endpoint (MME) 103b, and a packet gateway (PGW) 103c entry/exit node that delivers data between the core network and the external network. During the communication phase between the UE 101, the eNB 102a and the CN 103, an "S1" network interface is formed between the RAN 102 and the CN 103, including a control plane bearer connection "S1-MME" between the eNB 102a and the MME 103b. (Supple referred to as "S1c") "S1-MME", and the user plane bearer connection "S1u" between the eNB 102a and the SGW 103a. The "S5/S8" interface between SGW 103a and PGW 103c provides user plane communication therebetween. The MME 103b may be connected to the SGW 103a, for example, via an "S11" interface.
圖2展示說明可用於圖1中所展示之具有LTE能力的無線通信系統中之實例UE 200中包含之一些實例組件的方塊圖。UE 200可為無線器件及其相關聯之通用積體電路卡(UICC),其包括用戶身分模組(SIM)應用程式、通用用戶身分模組(USIM)應用程式或可卸除使用者身分模組(R-UIM)應用程式,或UE 200可為器件本身而無此卡。 2 shows a block diagram illustrating some of the example components that may be used in the example UE 200 in the LTE capable wireless communication system shown in FIG. The UE 200 can be a wireless device and its associated Universal Integrated Circuit Card (UICC), which includes a User Identity Module (SIM) application, a Universal User Identity Module (USIM) application, or a removable user identity module. The group (R-UIM) application, or UE 200 can be the device itself without this card.
UE 200包括由通信匯流排201連結之多個組件。處理器202控制UE 200之總操作。經由通信子系統204執行包括資料及語音通信之通 信功能。通信子系統204可採用以下形式:數據機、數據機組、乙太網路器件、通用串列匯流排(USB)介面器件、串列介面、符記環器件、光纖分散式資料介面(FDDI)器件、無線區域網路(WLAN)器件、諸如分碼多重存取(CDMA)器件之無線電收發器器件、全球行動通信系統(GSM)無線電收發器器件、微波存取全球互通(WiMAX)器件,及/或用於連接至網路之其他已知器件。通信子系統204可使處理器202能夠與網際網路或一或多個電信網路或其他網路通信,處理器202可自該等網路接收資訊或處理器202可輸出資訊至該等網路。在圖1之情境中,通信子系統204自無線網路206接收訊息且發送訊息至無線網路206,無線網路206可為用於語音通信或資料通信或兩者之圖1中所展示之RAN 102。電源208(諸如一或多個可再充電電池或至外部電力供應器之埠)對UE 200供電。 The UE 200 includes a plurality of components linked by a communication bus 201. The processor 202 controls the overall operation of the UE 200. Performing communication including data and voice communication via communication subsystem 204 Letter function. The communication subsystem 204 can take the form of a data machine, a data unit, an Ethernet device, a universal serial bus (USB) interface device, a serial interface, a token ring device, a fiber-distributed data interface (FDDI) device. Wireless local area network (WLAN) devices, radio transceiver devices such as code division multiple access (CDMA) devices, Global System for Mobile Communications (GSM) radio transceiver devices, Worldwide Interoperability for Microwave Access (WiMAX) devices, and/or Or other known devices used to connect to the network. Communication subsystem 204 can enable processor 202 to communicate with the Internet or one or more telecommunications networks or other networks from which processor 202 can receive information or processor 202 can output information to such networks. road. In the context of FIG. 1, communication subsystem 204 receives messages from wireless network 206 and sends messages to wireless network 206, which may be shown in FIG. 1 for voice communication or data communication or both. RAN 102. A power source 208, such as one or more rechargeable batteries or to an external power supply, powers the UE 200.
處理器202與電子器件之其他組件互動,該等其他組件包括隨機存取記憶體(RAM)210、大容量儲存器212(包括但不限於磁碟及光碟、磁帶、固態驅動機或RAID陣列)、唯讀記憶體(ROM)214及顯示螢幕216,顯示螢幕216可為(例如)液晶顯示器(LCD)。i/o控制器218發送及接收關於一或多個使用者控制器件(諸如顯示螢幕216上之觸敏覆蓋)之信號以使得使用者能夠與UE 200互動。 The processor 202 interacts with other components of the electronic device, including random access memory (RAM) 210, mass storage 212 (including but not limited to disk and optical disk, magnetic tape, solid state drive, or RAID array). The read-only memory (ROM) 214 and the display screen 216 can be, for example, a liquid crystal display (LCD). The i/o controller 218 sends and receives signals regarding one or more user control devices, such as touch sensitive overlays on the display screen 216, to enable the user to interact with the UE 200.
處理器202執行其可自通信子系統204、RAM 210、大容量儲存器212或ROM 214存取之指令、程式碼、軟體或電腦程式。處理器202可包含一或多個資料處理單元或CPU晶片。處理器202可僅藉由其自身,或與其他區域地或遠端地提供之資料處理組件或圖2中未展示之其他組件合作執行指令。詳言之,處理器202能夠執行指令,使得UE 200可操作以根據下文闡述之本發明在LTE網路中執行無線通信。 Processor 202 executes instructions, code, software or computer programs that are accessible from communication subsystem 204, RAM 210, mass storage 212, or ROM 214. Processor 202 can include one or more data processing units or CPU chips. Processor 202 may execute instructions solely by itself, or in cooperation with other data processing components provided at a regional or remote location, or other components not shown in FIG. In particular, processor 202 can execute instructions such that UE 200 is operative to perform wireless communication in an LTE network in accordance with the invention set forth below.
舉例而言,參看圖3,處理器202可執行實體化通信管理器301且將其維持於RAM 210中的指令,通信管理器301在使用中操作通信子 系統204以執行發信號以與RAN 102互動。 For example, referring to FIG. 3, processor 202 can execute an instruction to materialize communication manager 301 and maintain it in RAM 210, and communication manager 301 operates the communicator in use. System 204 performs signaling to interact with RAN 102.
通信管理器301可(例如)在UE 201之RAM 110中實體化LTE協定堆疊以按LTE之存取層層提供以下中之一或多者:通常負責無線電相關功能之控制的無線電資源控制(RRC)發信號層302、通常負責丟失資料之傳輸的無線電鏈路控制(RLC)發信號層303、通常負責控制至實體層(PHY)305之存取的媒體存取控制(MAC)發信號層304。當然,可在其他地方實施協定堆疊層,舉例而言,MAC及PHY發信號可藉由韌體或硬體提供於UE中且因此不維持於RAM 110中。實際上,圖3中所展示之UE中的協定堆疊之實施僅為在本發明之範疇內的許多可能之一實例,且僅出於解釋性目的而提供。 The communication manager 301 can, for example, entity the LTE protocol stack in the RAM 110 of the UE 201 to provide one or more of the following at the access layer of LTE: Radio Resource Control (RRC, which is typically responsible for the control of radio related functions) The signaling layer 302, the Radio Link Control (RLC) signaling layer 303, which is typically responsible for the transmission of lost data, and the Media Access Control (MAC) signaling layer 304, which is typically responsible for controlling access to the physical layer (PHY) 305. . Of course, the protocol stack layer can be implemented elsewhere, for example, MAC and PHY signaling can be provided in the UE by firmware or hardware and thus not maintained in RAM 110. In fact, the implementation of the protocol stack in the UE shown in Figure 3 is only one of many possible examples within the scope of the present invention and is provided for illustrative purposes only.
LTE實體層(PHY)使用包括正交分頻多重存取(OFDMA)、多輸入及多輸出(MIMO)資料傳輸及智慧型天線之進階技術以符合以上網路需求。LTE PHY使用OFDMA以用於(例如)自BS至UE之下行鏈路傳輸,下行鏈路傳輸可藉由傳輸信號貫穿稱作小區之地理區而進行通信。另外,在一載波內,LTE PHY使用單載波分頻多重存取(SC-FDMA)以用於(例如)自UE至BS之上行鏈路傳輸。當經由相關聯之頻譜或頻寬執行通信時,OFDMA及SC-FDMA技術促進系統容量及輸貫量之增加。 The LTE Physical Layer (PHY) uses advanced techniques including Orthogonal Frequency Division Multiple Access (OFDMA), Multiple Input and Multiple Output (MIMO) data transmission, and smart antennas to meet the above network requirements. The LTE PHY uses OFDMA for, for example, downlink transmission from BS to UE, and downlink transmission can be communicated by transmitting signals throughout a geographic area called a cell. In addition, within a carrier, the LTE PHY uses Single Carrier Frequency Division Multiple Access (SC-FDMA) for uplink transmissions, for example, from the UE to the BS. The OFDMA and SC-FDMA techniques promote an increase in system capacity and throughput as communication is performed via the associated spectrum or bandwidth.
如上文所提及,LTE系統包括協定,諸如無線電資源控制(RRC)協定,其負責UE 101與RAN 102之eNB 102a,b,...n或其他存取或LTE設備之間的連接及無線電資源之指派、組態及釋放。在3GPP TS 36.331規範中詳細描述了RRC協定。根據RRC協定,將用於LTE中之UE的兩個基本RRC連接模式定義為「閒置模式」及「連接模式」。 As mentioned above, the LTE system includes protocols, such as Radio Resource Control (RRC) protocols, which are responsible for the connection and radio between the UE 101 and the eNB 102a, b, ... n or other access or LTE devices of the RAN 102. Assignment, configuration and release of resources. The RRC protocol is described in detail in the 3GPP TS 36.331 specification. According to the RRC protocol, two basic RRC connection modes for UEs in LTE are defined as "idle mode" and "connection mode".
在連接模式或狀態期間,UE 101可與網路交換信號且執行其他相關操作,包括執行與網路之使用者平面通信的能力,而在閒置模式或狀態期間,UE 101可關閉其能力及操作中之至少一些,且不再能夠 執行與網路之使用者平面通信。在第三代合作夥伴計劃(3GPP)規範TS 36.304及TS 36.331中詳細描述了閒置及連接模式行為。 During the connection mode or state, the UE 101 can exchange signals with the network and perform other related operations, including the ability to perform user plane communication with the network, while during idle mode or state, the UE 101 can turn off its capabilities and operations. At least some of them, and can no longer Perform user plane communication with the network. Idle and connected mode behavior is described in detail in the Third Generation Partnership Project (3GPP) specification TS 36.304 and TS 36.331.
圖4說明用於LTE之RRC狀態轉變。LTE中閒置模式401與連接模式402之間的轉變經由顯式RRC連接建立403(或設立)及釋放404程序實現且涉及相關聯之發信號負擔。在正常閒置模式程序期間,若對於使用者平面通信之需要出現,則經由當前紮駐之小區建立RRC連接。圖5中展示在正常RRC連接建立期間交換以在LTE中之閒置模式與連接模式之間轉變的訊息之序列。若連接為UE起源的,則RRC連接請求訊息由UE 101發送(使用PRACH隨機存取通道起始)。相反地,若連接為網路起源的,則MME 103a首先請求已知追蹤區域內之所有eNB 102a,b...n發送傳呼訊息至UE 101以便激勵RRC連接請求訊息之UE發送。 Figure 4 illustrates an RRC state transition for LTE. The transition between the idle mode 401 and the connected mode 402 in LTE is implemented via an explicit RRC connection setup 403 (or setup) and release 404 procedure and involves an associated signaling burden. During the normal idle mode procedure, if a need for user plane communication occurs, an RRC connection is established via the currently camped cell. A sequence of messages exchanged during normal RRC connection setup to transition between idle mode and connected mode in LTE is shown in FIG. If the connection originates from the UE, the RRC Connection Request message is sent by the UE 101 (starting with the PRACH Random Access Channel). Conversely, if the connection originates from the network, the MME 103a first requests all of the eNBs 102a, b...n in the known tracking area to send a paging message to the UE 101 to motivate the UE to transmit the RRC Connection Request message.
在連接模式402內,UE 101可實施DRX程序,此等DRX程序經控制於媒體存取控制(MAC)層內。經由使用可由資料活動或其他事件觸發之多個計時器及程序來定義DRX型樣。然而,總DRX程度可經概念化以存在於三個主要模式之一者中,其中此等模式中之一者可在任一時間處於使用中。因此有可能將此等DRX模式視為RRC連接模式402之MAC子狀態,每一MAC子狀態與DRX位準相關聯: Within connection mode 402, UE 101 may implement a DRX procedure that is controlled within a Medium Access Control (MAC) layer. The DRX pattern is defined by using multiple timers and programs that can be triggered by data activities or other events. However, the total DRX degree can be conceptualized to exist in one of three main modes, one of which can be in use at any one time. It is therefore possible to consider these DRX modes as the MAC substates of the RRC connected mode 402, with each MAC substate being associated with the DRX level:
‧連續接收402a:無DRX-UE 101之接收器永遠開啟且準備經由RRC連接接收使用者平面資料。 ‧ Continuous reception 402a: The receiver without DRX-UE 101 is always on and is ready to receive user plane data via the RRC connection.
‧短DRX 402b:允許UE針對除了N個中之M個之外的所有子訊框(其中子訊框在LTE系統中為1ms傳輸時間單位)關閉其接收器(睡眠,或DRX),其中M為小值,諸如1或2,且N為相對小值,諸如8。 ‧ short DRX 402b: allows the UE to turn off its receiver (sleep, or DRX) for all subframes except M of the N (where the subframe is 1 ms transmission time unit in the LTE system), where M Is a small value, such as 1 or 2, and N is a relatively small value, such as 8.
‧長DRX 402c:允許UE針對除了N個中之M個之外的所有子訊框關閉其接收器(睡眠,或DRX),其中M為小值,諸如1或2,且N為相對大值,諸如256。 ‧Long DRX 402c: Allows the UE to turn off its receiver (sleep, or DRX) for all subframes except M of N, where M is a small value, such as 1 or 2, and N is a relatively large value , such as 256.
對於正確系統操作,eNB 102a及UE 101兩者關於哪些子訊框分類為DRX(UE 101可睡眠)及哪些子訊框不分類為DRX(UE 101不可睡眠)而經同步化為重要的。為了實現此協調,不活動計時器可經組態(在UE 101及eNB 102a兩者中)以便隱含地控制(亦即,無發信號命令或指令)朝向具有增加之DRX的連接模式DRX子狀態之轉變。另外,MAC命令亦可由網路使用(自eNB 102a發送至UE 101)以便明確地將轉變導向增加之DRX子狀態。 For proper system operation, it is important that both eNB 102a and UE 101 are synchronized as to which subframes are classified as DRX (UE 101 sleepable) and which subframes are not classified as DRX (UE 101 is not sleepable). To achieve this coordination, the inactivity timer can be configured (in both UE 101 and eNB 102a) to implicitly control (ie, no signaling commands or instructions) toward the connected mode DRX with increased DRX. The change of state. In addition, the MAC command can also be used by the network (sent from the eNB 102a to the UE 101) to explicitly direct the transition to the increased DRX sub-state.
當在連接模式402中時,新使用者平面資料之任何通信通常導致在由正在進行之封包資料活動及稱作DRX不活動計時器之不活動計時器判定的時段內至連續接收子狀態402a之轉變。每一新資料封包將DRX不活動計時器重設為預組態值且當計時器期滿時,進行自連續接收402a至DRX子狀態402b、402c中之一者的轉變。 When in connection mode 402, any communication of new user plane data typically results in a continuous reception of substate 402a during the period determined by the ongoing packet data activity and the inactivity timer called the DRX inactivity timer. change. Each new data packet resets the DRX inactivity timer to a pre-configured value and when the timer expires, transitions from one of the continuous reception 402a to one of the DRX sub-states 402b, 402c.
在LTE系統中,用以控制網路之小區之間的UE行動性之機制在閒置模式401與連接模式402之間不同: In the LTE system, the mechanism for controlling UE mobility between cells of the network differs between the idle mode 401 and the connected mode 402:
‧在閒置模式401中,行動性為UE控制的(亦即,UE 101按照3GPP技術規範36.304且根據由網路設定之相關組態參數執行小區選擇及重新選擇程序)。在藉由UE 101選擇或重新選擇新小區之後,UE 101將僅在新小區屬於與先前紮駐小區之追蹤區域不同的追蹤區域時告知網路其新位置。追蹤區域為小區群組一哪些小區屬於哪一追蹤區域取決於網路組態。因此,在閒置模式401中,行動性報告僅很少由UE 101發送,且網路以相對粗細微度(與小區層級相對比之追蹤區域層級)意識到UE之位置。 In the idle mode 401, the mobility is UE controlled (i.e., the UE 101 performs the cell selection and reselection procedures in accordance with the 3GPP technical specification 36.304 and in accordance with the relevant configuration parameters set by the network). After selecting or reselecting a new cell by the UE 101, the UE 101 will inform the network of its new location only when the new cell belongs to a different tracking area than the tracking area of the previously camped cell. The tracking area is a group of cells. Which tracking area belongs to which tracking area depends on the network configuration. Thus, in the idle mode 401, the mobility report is rarely transmitted by the UE 101, and the network is aware of the location of the UE with a relatively coarse granularity (a tracking area level as compared to the cell level).
‧在連接模式402中,UE 101根據由網路在量測控制訊息中發送至UE 101之組態執行其他小區(在相同或其他頻率上)的量測。量測由UE 101報告至網路,其中量測由網路使用以作出交遞決策。在由網路作出交遞決策之後,指示UE 101移動至另一小區或頻率。因此,在連 接模式402中,可相對頻繁地發送量測報告且網路以較精細細微度(至小區層級)意識到UE之位置。 In connection mode 402, UE 101 performs measurements of other cells (on the same or other frequencies) according to the configuration sent by the network to the UE 101 in the measurement control message. The measurement is reported by the UE 101 to the network, where the measurements are used by the network to make a handover decision. After the handover decision is made by the network, the UE 101 is instructed to move to another cell or frequency. Therefore, in the company In mode 402, the measurement report can be sent relatively frequently and the network is aware of the location of the UE at a finer granularity (to the cell level).
下文表1中概述用於LTE之RRC及MAC/DRX子狀態。 The RRC and MAC/DRX sub-states for LTE are summarized in Table 1 below.
如自以下描述將為明顯的,本發明闡述可用於(例如)LTE無線通信網路中之中止RRC連接,使得至少UE與eNB之間的使用者平面通信經停用(亦即,不能由UE及eNB傳輸或接收),但其中可有效地重新啟動中止之RRC連接,使得跨越相同之「已建立」RRC連接回復UE與eNB之間的通信,而不必創建新RRC連接的方法。此出於以下理由而提供用於無線通信系統之顯著優點。 As will be apparent from the description below, the present invention is described for use in, for example, a RRC connection in an LTE wireless communication network such that at least user plane communication between the UE and the eNB is disabled (ie, not by the UE) And the eNB transmits or receives), but wherein the suspended RRC connection can be effectively restarted, so that communication between the UE and the eNB is replied across the same "established" RRC connection without having to create a new RRC connection. This provides significant advantages for wireless communication systems for the following reasons.
在UE上執行之一些應用程式可產生需要僅較不頻繁地或在短時段內提供傳輸資源之訊務。此性質之訊務可特性化為「叢發的」或「偶發性的」且可涉及具有極少或無資料活動之延長時段。當在系統內處置此訊務時,用於UE 101之自閒置模式401至連接模式402的頻繁RRC狀態轉變將各自涉及UE 101與RAN 102之間,及/或RAN 102與CN 103之間的顯著發信號交換。發信號可(例如)需要:1. 建立或重組態無線電承載(例如,經由UE 101與RAN 102之間的Uu介面), 2. 建立或重組態其他承載、承載片段或通信路徑(例如,LTE eNB 102a,b...n與SGW 103a之間的S1承載,或SGW 103a與PGW 103c之間的S5/S8承載),3. 執行安全性程序以建立安全通信,4. 建立或重組態待用於連接或在連接期間使用之實體無線電資源及/或,5. 組態與RRC連接模式內之操作有關的其他參數。 Some applications executing on the UE can generate traffic that requires transmission resources to be provided less frequently or in a short period of time. Traffic of this nature can be characterized as "cluster" or "occasional" and can involve extended periods of time with little or no data activity. When this traffic is handled within the system, frequent RRC state transitions for the UE 101 from the idle mode 401 to the connected mode 402 will each involve between the UE 101 and the RAN 102, and/or between the RAN 102 and the CN 103. Significant signal exchange. Signaling may, for example, require: 1. Establish or reconfigure a radio bearer (e.g., via a Uu interface between UE 101 and RAN 102), 2. Establish or reconfigure other bearers, bearer fragments, or communication paths (eg, S1 bearers between LTE eNBs 102a, b...n and SGW 103a, or S5/S8 bearers between SGWs 103a and PGW 103c) 3. Perform a security procedure to establish secure communication, 4. Establish or reconfigure physical radio resources to be used for connection or use during the connection and/or 5. Configure other operations related to operation within the RRC connected mode parameter.
若出於網路效率之理由,在處置此訊務時UE 101始終保持於RRC連接模式402中,使得避免上文描述之重複狀態轉變及相關網路訊息傳遞負擔,此可導致用於UE 101之高功率使用及較短電池壽命,此歸因於RRC連接模式402中之永遠開啟的相對高功率要求。此部分係因為在RRC連接模式402中,行動性始終在小區層級經網路控制(其涉及來自UE之量測報告)。另外,儘管可使用DRX循環(由MAC層控制)以減少資料不活動之時間期間的UE功率消耗,但行動性仍保持為網路控制的且連接模式DRX組態亦由網路設定且可能不向UE提供可與閒置模式401之功率消耗相比的功率消耗。此外,當在連接模式中時一些無線電傳輸資源可由UE指派、保留或使用以用於控制發信號目的,儘管可能不存在用於傳輸之即刻使用者平面資料。連接模式DRX子狀態可因此展現用於UE 101之過量功率消耗或用於RAN 102之系統資源的低效使用,而至閒置模式401之轉變(且隨後在回復資料活動時返回至連接模式402)可引起執行之顯著發信號負擔。 If for reasons of network efficiency, the UE 101 is always in the RRC connected mode 402 when handling this traffic, so that the repetitive state transitions described above and the associated network messaging burden are avoided, which may result in the UE 101. The high power usage and short battery life are due to the relatively high power requirements that are always on in the RRC connected mode 402. This is because, in the RRC connected mode 402, mobility is always network controlled at the cell level (which involves measurement reports from the UE). In addition, although DRX cycles (controlled by the MAC layer) can be used to reduce UE power consumption during periods of data inactivity, mobility remains network-controlled and the connected mode DRX configuration is also set by the network and may not The UE is provided with power consumption comparable to the power consumption of the idle mode 401. Moreover, some of the radio transmission resources may be assigned, reserved, or used by the UE when used in connected mode for control signaling purposes, although there may be no immediate user plane data for transmission. The connected mode DRX sub-state may thus exhibit excessive power consumption for the UE 101 or inefficient use of system resources for the RAN 102, and transition to the idle mode 401 (and then return to the connected mode 402 upon replying to the data activity) A significant signaling burden can be incurred in execution.
如自以下描述將為明顯的,如在本發明中所闡述,中止RRC連接相比於特別在至UE之所謂的「叢發」或偶發性資料傳送期間控制無線通信系統(亦即,重複狀態轉變或將UE保持於連接模式402之DRX子狀態中)之此等兩個技術提供優點,使得在本發明中,網路訊務及功率消耗可相對低,且電池壽命可相對高。 As will be apparent from the description below, as explained in the present invention, the suspension of the RRC connection controls the wireless communication system (i.e., the repeating state) during the so-called "clustering" or sporadic data transmission to the UE in particular. These two techniques of transitioning or maintaining the UE in the DRX sub-state of the connected mode 402 provide advantages such that in the present invention, network traffic and power consumption can be relatively low and battery life can be relatively high.
在本發明中,勝於處於連接模式402中但暫時不在作用中(亦即,歸因於在叢發或偶發性通信之不在作用中時段期間不需要即刻資料傳送)之UE 101轉變至閒置模式401或至連接模式DRX子狀態402a、402b,UE 101替代地經組態以執行UE控制行動性(UE自主小區選擇/重新選擇)及DRX程序,就像其處於閒置模式中(再使用閒置模式組態藉此消除對新RRC狀態定義或組態之需要)。然而,儘管表現為就像在閒置模式中,但用於UE之RRC連接可視為「中止的」(與釋放形成對比)。RRC中止與RRC釋放之間的差異為不捨棄RRC連接資訊或RRC訊文之一些或全部而替代地將其儲存於無線電存取網路(RAN)或核心網路(CN)中之網路組件處(諸如一或多個eNB 102及/或行動性管理實體(MME)103b處)及/或儲存於UE 101處。 In the present invention, the UE 101 is transitioned to the idle mode rather than being in the connected mode 402 but temporarily not active (i.e., due to the fact that no immediate data transfer is required during the inactive period of the burst or sporadic communication). 401 or to connection mode DRX sub-states 402a, 402b, UE 101 is instead configured to perform UE control mobility (UE autonomous cell selection/reselection) and DRX procedures as if it were in idle mode (reuse idle mode) The configuration thus eliminates the need for a new RRC state definition or configuration). However, although acting as if in idle mode, the RRC connection for the UE can be considered "aborted" (as opposed to release). The difference between the RRC suspension and the RRC release is a network component that does not discard some or all of the RRC connection information or the RRC message and instead stores it in the Radio Access Network (RAN) or the Core Network (CN). And/or stored at the UE 101 (such as at one or more eNBs 102 and/or Mobility Management Entity (MME) 103b).
所儲存(中止)RRC連接資訊可包含(例如)以下中之一或多者:與無線電承載之當前組態、無線電資源、暫時小區識別符、安全性參數或密鑰、MAC組態、實體層組態以及量測及報告組態有關的參數。RRC連接資訊或RRC訊文資訊亦可由與RRC層或諸如實體層、MAC層、RLC層及PDCP層之其他層有關的資料組成。安全性參數或密鑰可(例如)包括Kasme、Kenb、KRRCenc、KRRCint、KRRCUPenc、完整性演算法、加密演算法及無線電承載COUNT值。因此,無線電連接「訊文」之一或多個組份仍存在於網路組件及UE 101內的記憶體中,但此等組份可標記為「不在作用中」、「待用」或「中止」。此可意謂在不首先執行以下步驟中之一或多者的情況下,所儲存RRC連接參數中之一或多者可不用於UE 101與eNB 102a之間的即刻使用者平面通信:判定其當前有效性之步驟,經由無線電存取網路之小區重新啟動或重新建立連接以便自中止狀態返回至正常連接模式之步驟。 The stored (suspended) RRC connection information may include, for example, one or more of the following: current configuration with radio bearer, radio resource, temporary cell identifier, security parameter or key, MAC configuration, physical layer Configure and measure and report configuration related parameters. The RRC connection information or the RRC message information may also be composed of data related to the RRC layer or other layers such as the physical layer, the MAC layer, the RLC layer, and the PDCP layer. Safety parameters or keys may be (e.g.) comprises K asme, Kenb, KRRCenc, KRRCint , KRRCUPenc, integrity algorithm, encryption algorithm, and radio bearer COUNT value. Therefore, one or more components of the radio connection "message" still exist in the network component and the memory in the UE 101, but these components can be marked as "not in use", "standby" or "Suspended." This may mean that one or more of the stored RRC connection parameters may not be used for immediate user plane communication between the UE 101 and the eNB 102a without first performing one or more of the following steps: determining its The current validity step is the step of restarting or re-establishing the connection via the cell of the radio access network to return to the normal connection mode from the suspended state.
當RRC連接中止時,RRC訊文資料之組件可儲存或維持於UE及/或網路中。用於觸發或起始連接中止之準則可連結至自在器件上執 行、開啟或在使用中之一或多個應用程式引起的資料之活動或概況。此可包括由無線電連接或由一或多個應用程式需要之資料量或資料速率的估計、預測或量測。其可進一步包含封包到達時間或到達間隔時間之估計、預測或量測。 When the RRC connection is aborted, the components of the RRC message data may be stored or maintained in the UE and/or the network. Guidelines for triggering or initiating a connection abort can be linked to a free device An activity or profile of data that is caused by one or more applications that are open, open, or in use. This may include estimation, prediction or measurement of the amount of data or data rate required by the radio connection or by one or more applications. It may further include an estimate, prediction or measurement of the packet arrival time or the arrival interval.
用於觸發之準則亦可連結至UE或經由UE連接至RAN之行動器件的狀態。UE狀態之態樣可包括以下中之一或多者: The criteria for triggering may also be linked to the UE or the state of the mobile device connected to the RAN via the UE. The aspect of the UE status may include one or more of the following:
‧使用者與器件互動之程度,例如最近是否觸碰器件之鍵盤,螢幕或螢幕背光之狀態,最近是否觸碰觸控螢幕,其他使用者輸入器件或回應使用者輸入手勢之器件的狀態 ‧ The degree to which the user interacts with the device, such as whether the keyboard of the device has been touched recently, the state of the screen or screen backlight, whether the touch screen has recently been touched, the state of the device that the other user inputs or responds to the user input gesture
‧執行之應用程式之執行狀態,包括應用程式是否開啟、在前台抑或後台執行、以中止抑或冬眠狀態儲存於記憶體中 ‧ Execution status of the executed application, including whether the application is enabled, executed in the foreground or in the background, stored in memory in a pause or hibernation state
‧執行之應用程式的協定狀態,包括來自同級實體之應答或回覆是否擱置及是否(例如)已在一時段內預期進一步資料交換 • The agreed status of the executed application, including whether the response or reply from the peer entity is on hold and whether, for example, further data exchange is expected within a period of time
在又其他替代方案中,用於觸發之準則可連結至應用程式活動、應用程式類型、應用程式標記,或應用程式識別符。用於觸發之準則可進一步連結至應用程式狀態或特性化,諸如應用程式是否在後台通信模式中執行。後台通信模式可包含一狀態,其中當前服務品質(QoS)要求可自正常QoS位準放寬,此(例如)歸因於最近缺乏與器件之使用者互動,或歸因於應用程式資料之潛時容限。 In still other alternatives, the criteria for triggering can be linked to an application activity, an application type, an application tag, or an application identifier. The criteria for triggering can be further linked to application state or characterization, such as whether the application is executing in background communication mode. The background communication mode may include a state in which the current quality of service (QoS) requirements may be relaxed from the normal QoS level, for example due to the recent lack of user interaction with the device or due to the latency of the application data. Tolerance.
用於觸發之準則亦可連結至UE之行動性情況,例如連結至運動速度或至小區每時間單位改變之最近、當前或預期數目。在較高速度下,可需要觸發(或較易於觸發)至RRC中止狀態之轉變,以便避免對網路控制交遞程序及與其相關聯之發信號負擔的需要。所接收或所報告無線電情況(諸如信雜比或信號干擾比、信號功率或品質估計,或RAN內之節點與UE之間的路徑損失)亦可形成用以起始RRC連接之中止之準則的部分。 The criteria for triggering may also be linked to the UE's mobility situation, such as the link to the speed of motion or to the most recent, current or expected number of changes per unit of time in the cell. At higher speeds, a transition to triggering (or easier to trigger) to the RRC abort state may be required in order to avoid the need for network control handover procedures and the signaling burden associated therewith. The received or reported radio conditions (such as signal-to-noise ratio or signal-to-interference ratio, signal power or quality estimation, or path loss between nodes and UEs within the RAN) may also form criteria for initiating the suspension of the RRC connection. section.
可在較高層(諸如應用程式管理器、作業系統控制器或管理器功能、NAS(非存取層)層級)處或在AS(存取層)層級(諸如RRC、MAC或實體層層級)處藉由來自使用者平面實體,或來自器件輸入/輸出功能、來自無線電接收器或信號處理功能或來自應用程式之輸入進行起始連接之中止的決策。 Can be at a higher level (such as application manager, operating system controller or manager function, NAS (non-access stratum) level) or at the AS (access layer) level (such as RRC, MAC or physical level) The decision to initiate the connection is aborted by a user plane entity, or from a device input/output function, from a radio receiver or signal processing function, or from an application input.
eNB通常控制連接中止,但中止可由UE或eNB起始。在UE起始狀況下,eNB可採取在自UE接收之中止的請求之後中止連接之決策。然而,eNB亦可決定在用於來自UE之中止的請求之後不中止RRC連接或決定釋放RRC連接。此可(例如)因為eNB意識到UE未意識到之某事(諸如用於UE之下行鏈路使用者平面資料)而發生。在eNB起始狀況下,eNB可決定在未自UE接收中止請求之情況下中止UE之連接。 The eNB typically controls the connection abort, but the suspension can be initiated by the UE or eNB. In the UE initial condition, the eNB may take a decision to abort the connection after receiving a suspended request from the UE. However, the eNB may also decide not to suspend the RRC connection or decide to release the RRC connection after the request for termination from the UE. This can occur, for example, because the eNB is aware of something the UE is not aware of, such as for UE downlink user plane data. In the eNB initial condition, the eNB may decide to suspend the UE connection if the abort request is not received from the UE.
RRC連接中止可以兩種方式中之一者發生,a. 隱含地藉由使中止與另一事件或觸發相關聯,此通常(但未必)對UE及eNB為通常已知的。中止可在與另一事件相同之時間處發生,或可在連結至另一事件之時間處發生(例如藉由計時器或計時器期滿)。隱含中止可在UE及/或eNB中發生或b. 藉由使用在UE與eNB之間交換的顯式發信號(或反之亦然) The RRC connection suspension may occur in one of two ways, a. implicitly by associating the suspension with another event or trigger, which is typically (but not necessarily) generally known to the UE and the eNB. The suspension may occur at the same time as another event, or may occur at the time of linking to another event (eg, by expiration of a timer or timer). Implied suspension may occur in the UE and/or eNB or b. by using an explicit signaling exchanged between the UE and the eNB (or vice versa)
在一些實施例中,若對於使用者平面通信之需要針對具有中止RRC訊文之UE而出現,則RRC連接可僅在關於中止RRC連接或相關聯之中止RRC訊文當前是否有效之前導檢查之後經使用(在適當時由網路或UE使用)。有效中止RRC訊文為可能可解除中止(亦即「重新啟動」或重新建立)而不需要釋放RRC連接及建立新RRC連接之RRC訊文。因此,若RRC訊文視為「有效」,則UE 101或eNB 102a可起始重新啟動或重新建立程序以代替建立新RRC連接之程序(且其將不利用所儲存RRC訊文資料)。已解除中止之有效RRC訊文再次準備使用以使得可回復UE 101與eNB 102a之間的使用者平面通信而不需要擴展 RRC釋放、建立或設立程序。其上RRC訊文視為「有效」之小區集合稱為有效性區域。在有效性區域內,UE或網路可起始或嘗試用於先前中止之RRC連接的重新啟動或重新建立程序。 In some embodiments, if the need for user plane communication occurs for a UE with aborted RRC message, the RRC connection may only be checked after the suspension of the RRC connection or the associated suspension of the RRC message is currently valid. Used (by the network or UE when appropriate). The effective suspension of the RRC message is a RRC message that may be deactivated (ie, "restarted" or re-established) without the need to release the RRC connection and establish a new RRC connection. Thus, if the RRC message is considered "valid", the UE 101 or eNB 102a may initiate a restart or re-establish procedure instead of establishing a new RRC connection (and it will not utilize the stored RRC message material). The valid RRC message that has been deactivated is again ready to use so that user plane communication between UE 101 and eNB 102a can be replied without extension The RRC releases, establishes or establishes procedures. The set of cells on which the RRC message is considered "valid" is called the validity zone. Within the validity area, the UE or network may initiate or attempt a restart or re-establish procedure for the previously suspended RRC connection.
UE認為RRC訊文有效之小區集合可與網路認為RRC訊文有效之小區集合相同或不同。因此UE之有效性區域可與網路有效性區域相同或不同。若UE或eNB試圖重新啟動或重新建立同級實體(eNB或UE)不認為RRC訊文有效之小區中的中止之RRC訊文,則重新啟動或重新建立可不成功且可建立新RRC連接。 The UE considers that the set of cells in which the RRC message is valid may be the same as or different from the set of cells that the network considers the RRC message to be valid. Therefore, the validity area of the UE may be the same as or different from the network validity area. If the UE or the eNB attempts to restart or re-establish the suspended RRC message in the cell in which the peer entity (eNB or UE) does not consider the RRC message valid, the restart or re-establishment may be unsuccessful and a new RRC connection may be established.
「RRC重新啟動」或「重新建立」訊息或程序需要重新啟動先前中止之RRC連接且允許使用者平面資料經傳送(使用先前儲存之RRC連接組態的部分或全部)。此程序可在RRC連接先前經中止之小區(「中止小區」)內或新小區內執行。類似地,程序可在與當RRC連接先前經中止時UE連接至之eNB(「中止eNB」)通信,或與新eNB通信之情況下執行。 The "RRC Restart" or "Re-establish" message or procedure needs to restart the previously aborted RRC connection and allow the user plane data to be transmitted (using some or all of the previously stored RRC connection configuration). This procedure can be performed within the RRC connection previously suspended cell ("abort cell") or within the new cell. Similarly, the procedure may be performed in the case of an eNB ("sustained eNB") to which the UE is connected when the RRC connection was previously suspended, or in communication with the new eNB.
在一些狀況下,可在不修改RRC訊文、其組態或其參數之情況下重新啟動(或重新建立)中止之RRC連接。在此狀況下,可再使用RRC連接以便繼續處置使用者平面通信。若重新啟動或重新建立程序在中止小區內或在由中止eNB控制之小區內執行,則此情形可較可能。此在處置叢發類型之資料訊務時特別有用,且可節省電力並將與RRC連接處置相關聯之控制平面訊務保持為低的。在其他狀況下,在重新啟動或重新建立程序期間可需要更新所儲存RRC訊文之一或多個組份。若重新啟動或重新建立程序在除了中止小區之外的小區內,或在不由中止eNB控制之小區內執行,則此情形可較可能。 In some cases, the suspended RRC connection may be restarted (or re-established) without modifying the RRC message, its configuration, or its parameters. In this case, the RRC connection can be reused to continue to handle user plane communications. This situation may be more likely if the restart or re-establishment procedure is performed within the abort cell or within a cell controlled by the abort eNB. This is particularly useful when dealing with burst type data traffic and can save power and keep control plane traffic associated with RRC connection handling low. In other situations, one or more of the stored RRC messages may need to be updated during the restart or re-establishment process. This situation may be more likely if the restart or re-establishment procedure is performed in a cell other than the abort cell, or in a cell not controlled by the abort eNB.
在又其他狀況下,可能不可能或不允許重新啟動或重新建立中止之RRC訊文。控管是否可重新啟動或重新建立中止之RRC訊文的準則可預先建立於一標準內或可經由組態步驟提供至UE、eNB或至另一 網路實體。若判定所儲存RRC連接之許多組份將需要更新,則亦可採取不重新啟動或重新建立中止之RRC訊文的決策。在此狀況下,正常RRC連接建立程序可隨後,如在正常閒置模式UE之狀況中(亦即,RRC連接設立在隨機存取或傳呼程序之後)。 In other cases, it may not be possible or possible to restart or re-establish the suspended RRC message. The criteria for controlling whether the RRC message can be restarted or re-established may be pre-established within a standard or may be provided to the UE, eNB or to another via configuration steps Network entity. If it is determined that many of the components of the stored RRC connection will need to be updated, a decision may be taken not to restart or re-establish the suspended RRC message. In this case, the normal RRC connection setup procedure can then be followed, as in the case of the normal idle mode UE (i.e., the RRC connection is set up after the random access or paging procedure).
圖7之流程圖中展示此RRC重新啟動程序的簡化圖。 A simplified diagram of this RRC restart procedure is shown in the flow chart of FIG.
此可與來自圖6中所展示之閒置模式的正常RRC連接設立程序形成對比,其中無線通信網路中不提供RRC中止功能性。藉由比較圖7與圖6之流程圖可見,根據本發明,在中止RRC連接之後,當對使用者平面資料通信之需要出現且判定中止RRC連接或相關聯之中止RRC訊文「有效」時,在使用者平面資料可經傳送之前,RRC連接可由RRC連接重新啟動或重新建立程序成功地重新啟動。視情況,在觸發RRC連接重新啟動或重新建立程序之前,首先可檢查UE 101或eNB 102a或兩者中之各種RRC連接/訊文有效性準則。亦歸因於有效S1介面必須亦存在於使用者平面資料之通信之前的事實,當需要重新啟動時,CN 103(諸如MME 103b)之節點亦可涉及到檢查中止RRC連接之有效性狀態。下文列出可經使用以作為決策程序之輸入的有效性準則之實例: This can be contrasted with the normal RRC connection setup procedure from the idle mode shown in Figure 6, where RRC abort functionality is not provided in the wireless communication network. As can be seen by comparing the flowcharts of FIG. 7 and FIG. 6, according to the present invention, after the suspension of the RRC connection, when the need for user plane data communication occurs and it is determined that the RRC connection is suspended or the associated suspension RRC message is "valid" The RRC connection may be successfully restarted by the RRC connection restart or re-establishment procedure before the user plane data can be transmitted. Optionally, various RRC connection/message validity criteria in UE 101 or eNB 102a or both may be checked prior to triggering an RRC Connection Restart or re-establish procedure. Also due to the fact that the active S1 interface must also exist before the communication of the user plane data, the node of the CN 103 (such as the MME 103b) may also be involved in checking the validity status of the suspension of the RRC connection when a restart is required. Examples of validity criteria that can be used as input to a decision-making process are listed below:
‧當RRC訊文中止時,UE 101當前是否紮駐於與其連接至之小區相同的小區上。通常,RRC組態基於每一小區而應用且訊文僅在小區未改變時保持有效可為網路策略。注意此不排除UE 101已移動至RRC訊文中止的小區之外,且再次移動回至同一小區中之可能性。在此等狀況下,RRC訊文仍可重新啟動且視為有效中止RRC訊文。 ‧ When the RRC message is aborted, the UE 101 is currently camped on the same cell as the cell to which it is connected. Typically, the RRC configuration is applied on a per cell basis and the message remains valid only when the cell has not changed. Note that this does not exclude the possibility that the UE 101 has moved outside the cell in which the RRC message was aborted and moved back to the same cell again. Under these conditions, the RRC message can still be restarted and deemed to be a valid suspension of the RRC message.
‧當RRC訊文中止時,UE 101當前是否紮駐於與其連接至之小區群組相同的小區群組上。eNB 102a,b...n通常將支援多個小區,從而在不需要標準化介面之情況下以無線電資源管理及RRC層級允許彼等小區之間的顯著協調。因此,UE之RRC訊文資訊可對小區群組(諸如 在相同eNB 102a,b...n中)可見且操作者或網路供應商可選擇協調其之間的RRC組態之一些態樣。此可使在eNB 102a下之一小區內中止的RRC連接能夠在相同eNB 102a之另一小區下重新啟動或重新建立。在諸如此之情形中,當檢查此重新啟動是否可能或允許時,UE 101是否仍附接至相同eNB 102a,b...n(或其他定義之小區群組)的知識可為有用的。小區群組可替代地包含追蹤區域。在進一步替代方案中,RRC訊文被視為有效之小區群組中之每一小區可不由相同eNB 102a,b...n控制。在此狀況下,可需要使RRC訊文資訊自「舊eNB」(負責先前中止之eNB)傳送至「新eNB」(控制在嘗試重新啟動或重新建立之時間處UE所定位之小區的eNB)。將需要RRC訊文資訊之此傳送以便藉由新eNB完成重新啟動或重新建立程序。 ‧ When the RRC message is aborted, the UE 101 is currently camped on the same cell group as the cell group to which it is connected. The eNBs 102a, b...n will typically support multiple cells, allowing for significant coordination between their cells at the radio resource management and RRC level without the need for a standardized interface. Therefore, the RRC message information of the UE can be related to the cell group (such as Visible in the same eNB 102a, b...n) and the operator or network provider can choose to coordinate some aspects of the RRC configuration between them. This enables the RRC connection suspended in one of the cells under eNB 102a to be restarted or re-established under another cell of the same eNB 102a. In situations such as this, knowledge of whether the UE 101 is still attached to the same eNB 102a, b...n (or other defined cell group) may be useful when checking if this restart is possible or allowed. The cell group may alternatively include a tracking area. In a further alternative, each of the cells in which the RRC message is considered valid may not be controlled by the same eNB 102a, b...n. In this case, it may be necessary to transfer the RRC message information from the "old eNB" (the eNB responsible for the previous suspension) to the "new eNB" (the eNB controlling the cell to which the UE is located at the time of attempting to restart or re-establish) . This transmission of RRC message information will be required to complete the restart or re-establish procedure by the new eNB.
‧RRC連接中止之後經過的時段是否低於預定計時器期滿臨限。系統可希望限制RRC連接可保持於中止狀態之時間長度。具有超出預組態值之年齡的中止連接不再視為有效的。 ‧ Whether the period elapsed after the suspension of the RRC connection is lower than the predetermined timer expires. The system may wish to limit the length of time that the RRC connection can remain in the suspended state. Aborted connections with an age beyond the pre-configured value are no longer considered valid.
如上文所描述,根據本發明,處於暫時不在作用中連接模式(亦即,具有「中止」RRC連接)之UE 101好像其處於閒置模式中一樣執行UE控制行動性(UE自主小區選擇/重新選擇)及DRX程序,且在此時間期間用於此UE之RRC連接可視為「中止的」(與釋放形成對比)。然而,當然可以不同方式看在此時間期間UE的情況或狀態,例如: As described above, according to the present invention, the UE 101 in the temporarily inactive connection mode (i.e., having the "suspended" RRC connection) performs UE control mobility as if it is in the idle mode (UE autonomous cell selection/reselection). And the DRX procedure, and the RRC connection for this UE during this time period can be considered "aborted" (in contrast to the release). However, it is of course possible to look at the situation or state of the UE during this time in different ways, for example:
1. UE 101可視為處於閒置模式中(當其執行UE控制行動性及閒置模式DRX程序時)但保持儲存與最近RRC連接相關聯的組態中之一些或全部以在某些情況下允許舊RRC連接之快速及有效重新啟動或重新建立。 1. UE 101 may be considered to be in idle mode (when it performs UE Control Action and Idle Mode DRX procedures) but keeps storing some or all of the configuration associated with the most recent RRC connection to allow old in some cases The RRC connection is quickly and effectively restarted or re-established.
2. UE 101可視為保持於RRC連接模式中但經組態以執行類似於閒置模式之UE控制行動性及DRX程序。RRC連接資訊之全部或大多數保持儲存於UE 101中,而RRC組態之一些部分可釋放。 2. UE 101 may be considered to remain in RRC connected mode but configured to perform UE Control Mobility and DRX procedures similar to idle mode. All or most of the RRC connection information remains stored in the UE 101, and some portions of the RRC configuration are released.
3. UE 101可視為保持於RRC連接模式中但置於新狀態或子狀態或模式中,在新狀態或子狀態或模式中UE 101執行類似於閒置模式之UE控制行動性及DRX程序。RRC連接資訊之全部或大多數保持儲存於UE 101中,而RRC組態之一些部分可釋放。 3. The UE 101 may be considered to remain in the RRC connected mode but placed in a new state or sub-state or mode in which the UE 101 performs UE-controlled mobility and DRX procedures similar to the idle mode. All or most of the RRC connection information remains stored in the UE 101, and some portions of the RRC configuration are released.
實際上,本發明不意欲限於將UE視為處於連接模式但其中RRC連接經「中止」。實情為,本發明闡述處置UE與RAN之間的RRC連接,及RAN與CN之間的與UE有關之連接,使得停用UE與RAN之間的使用者平面資料之傳送且儲存表示RRC連接之資料使得稍後可使用相同「已建立」RRC連接(在無該「已建立」RRC連接的情況下,RRC連接經「釋放」(亦即,放棄))且在無需創建新RRC連接的情況下來回復(相同小區/eNB上或不同小區/eNB上之)使用者平面資料傳送之方法。此方法可不僅用於支援LTE之無線通信系統中,亦用於其他無線通信協定中。 In fact, the invention is not intended to be limited to the UE being considered to be in connected mode but wherein the RRC connection is "suspended". In fact, the present invention describes handling the RRC connection between the UE and the RAN, and the UE-related connection between the RAN and the CN, such that the transmission of the user plane data between the UE and the RAN is disabled and the storage indicates the RRC connection. The data allows the same "established" RRC connection to be used later (in the absence of the "established" RRC connection, the RRC connection is "released" (ie, abandoned) and without the need to create a new RRC connection A method of replying to user plane data transmission (on the same cell/eNB or on different cells/eNBs). This method can be used not only in wireless communication systems supporting LTE but also in other wireless communication protocols.
現將更詳細地描述本發明之與實施及支援RRC連接中止及重新啟動程序相關聯的方法,包括可能之一些替代方案及變體。與RRC連接中止及重新啟動相關聯之程序可劃分為四個態樣,在以下章節中描述該四個態樣: The method of the present invention associated with implementing and supporting the RRC connection suspension and restart procedure will now be described in more detail, including possible alternatives and variations. The procedures associated with the RRC connection suspension and restart can be divided into four aspects, which are described in the following sections:
‧RRC連接程序 ‧ RRC connection procedure
‧在RRC連接中止期間處置行動性之程序(亦即,UE移動時之程序) ‧Protect the action procedure during the RRC connection suspension (ie, the procedure when the UE moves)
‧在RRC連接中止期間處置下行鏈路(DL)資料之接收的程序 ‧ Procedure for handling the reception of downlink (DL) data during the RRC connection suspension period
‧處置中止RRC連接以回復Uu資料傳送之程序 ‧ Disposal of the procedure of aborting the RRC connection to reply to Uu data transmission
本文中描述之在本發明之範疇內的UE 101、eNB 102a,b...n、SGW 103a、MME 103b及其他CN節點的操作方法及其他操作模式可至少部分由UE 101、eNB 102a,b...n、SGW 103a、MME 103b及其他CN節點內的一或多個處理器提供,該一或多個處理器執行機器可讀 指令以組態UE 101、eNB 102a,b...n、SGW 103a、MME 103b及其他CN節點以相應地起作用以執行該等方法。指令可經提供以作為電腦軟體產品。每一電腦軟體產品可提供於電腦可讀媒體中、上或由電腦可讀媒體支援,電腦可讀媒體可提供為本質上暫時(諸如,呈(例如)經由網際網路發送之資料傳輸信號)或本質上非暫時(諸如,呈RAM或其他非揮發性儲存器)之電腦可讀媒體的所有可能永久及非永久形式。另一方面,電腦可讀媒體可為包含所有電腦可讀媒體之非暫時電腦可讀媒體,僅除了暫時傳播信號。 The methods of operation of UE 101, eNBs 102a, b...n, SGW 103a, MME 103b, and other CN nodes described herein within the scope of the present invention, and other modes of operation may be at least partially comprised by UE 101, eNB 102a, b Provided by one or more processors within the SGW 103a, the MME 103b, and other CN nodes, the one or more processors executing machine readable The instructions configure the UE 101, the eNBs 102a, b...n, the SGW 103a, the MME 103b, and other CN nodes to function accordingly to perform the methods. Instructions can be provided as a computer software product. Each computer software product can be provided in, on, or supported by a computer readable medium that can be provided to be transitive in nature (such as, for example, transmitting data via, for example, the Internet) Or all possible permanent and non-permanent forms of computer readable media that are not intrinsically (such as in RAM or other non-volatile storage). In another aspect, a computer readable medium can be a non-transitory computer readable medium containing all computer readable media, except that the signal is temporarily propagated.
在UE 101中,當RRC連接中止發生時,UE 101可經組態以執行閒置模式行動性及傳呼接收程序,同時保持儲存其RRC訊文資訊之一些或全部以供可能再使用。所儲存RRC訊文資訊可包括以下各者: In UE 101, when an RRC connection abort occurs, UE 101 may be configured to perform an idle mode mobility and paging reception procedure while maintaining some or all of its RRC message information for possible reuse. The stored RRC message information may include the following:
‧已建立資料無線電承載(DRB)及發信號無線電承載(SRB)之組態,其包括用於每一無線電承載之PDCP組態及當前狀態(例如,計數器值等)及RLC組態及狀態(例如,計數器值等)。 ‧ Configuration of Data Radio Bearer (DRB) and Signaled Radio Bearer (SRB) has been established, including PDCP configuration and current status (eg counter value, etc.) and RLC configuration and status for each radio bearer ( For example, counter value, etc.).
‧安全性組態及狀態(例如,加密及完整性演算法、計數器值等) ‧Security configuration and status (eg, encryption and integrity algorithms, counter values, etc.)
‧量測報告組態。 ‧ Measurement report configuration.
‧最後使用之小區識別碼及小區特定使用者識別碼(C-RNTI-「小區無線電網路暫時識別符」) ‧ Last used cell ID and cell-specific user ID (C-RNTI - "Cell Radio Network Temporary Identifier")
另外,所儲存RRC訊文亦可包括其他資訊,諸如(但不限於)與無線電資源之任何分配、MAC組態、實體通道組態或實體層組態資料有關的組態資訊或參數。 In addition, the stored RRC message may also include other information such as, but not limited to, configuration information or parameters related to any allocation of radio resources, MAC configuration, physical channel configuration, or physical layer configuration data.
在網路中,當RRC連接中止發生時,一或多個eNB(諸如eNB 102a及102b)及/或MME 103b儲存UE之RRC訊文資訊之一些或全部以供可能再使用。儲存於網路中之RRC訊文資訊應對應於儲存於UE 101中之RRC訊文資訊。另外,網路側中止程序存在兩個主要替代方案, 此取決於eNB是否在中止發生之時間處告知CN關於中止: In the network, when an RRC connection suspension occurs, one or more eNBs (such as eNBs 102a and 102b) and/or MME 103b store some or all of the UE's RRC message information for possible reuse. The RRC message information stored in the network should correspond to the RRC message information stored in the UE 101. In addition, there are two main alternatives to the network side abort program. This depends on whether the eNB informs the CN about the abort at the time of the suspension:
‧RRC連接中止替代方案A-未告知CN中止 ‧ RRC connection suspension alternative A - did not inform CN to suspend
若未告知CN 103中止(藉由UE 101或eNB 102a),則S-GW 103a與eNB 102a之間的S1使用者平面將保持作用中且任何入站網路起源資料將由S-GW 103a經由S1轉遞至對應eNB 102a,在eNB 102a處網路起源資料將需要緩衝,從而擱置至UE 101之遞送。接著eNB 102a負責聯繫資料且將資料遞送至中止之UE 101。若發現中止UE RRC訊文在此時無效(例如,因為UE已移動或重新選擇至另一小區而不告知網路),則eNB 102a將需要起始額外程序(涉及諸如eNB 102b之其他eNB及/或CN 103)以定位UE 101且將資料投送至正確eNB 102b...n且先前投送至UE 101(下文論述用於在此情形中聯繫UE 101之程序)。或者,勝於一旦定位UE 101便繼續朝向正確eNB 102b...n投送資料,可捨棄資料且可替代地依賴於較高層協定(例如,TCP/IP)以確保最終遞送。 If the CN 103 is not informed (by the UE 101 or the eNB 102a), the S1 user plane between the S-GW 103a and the eNB 102a will remain active and any inbound network origination material will be passed by the S-GW 103a via S1. Forwarded to the corresponding eNB 102a, the network origination material will need to be buffered at the eNB 102a to suspend delivery to the UE 101. The eNB 102a is then responsible for contacting the material and delivering the data to the aborted UE 101. If it is found that the aborted UE RRC message is invalid at this time (eg, because the UE has moved or reselected to another cell without notifying the network), the eNB 102a will need to initiate additional procedures (involving other eNBs such as eNB 102b and / or CN 103) to locate the UE 101 and to route the data to the correct eNB 102b...n and previously to the UE 101 (the procedure for contacting the UE 101 in this case is discussed below). Alternatively, rather than continuing to target the correct eNBs 102b...n once the UE 101 is located, the data may be discarded and may instead rely on higher layer protocols (e.g., TCP/IP) to ensure final delivery.
‧RRC連接中止替代方案B-告知CN中止 ‧ RRC connection suspension alternative B - inform CN to abort
若告知CN 103中止(例如,藉由UE 101或eNB 102a),則可視情況採取行動以亦中止S-GW 103a與eNB 102a之間的S1使用者平面。S1使用者平面中止可僅影響S-GW 103a對待到達S-GW 103a之DL使用者資料的方式。因此,在此狀況下,其可視為僅DL S1使用者平面中止使得任何入站網路起源資料在S-GW 103a處經緩衝,從而擱置至UE 101之遞送。接著CN 103(亦即,MME 103b及/或S-GW 103a)負責識別UE之位置且隨後聯繫資料且將資料遞送至中止之UE 101。CN 103亦可能在被告知UE之RRC連接的中止時不中止用於UE 101之S1使用者平面。 If the CN 103 is told to be aborted (e.g., by the UE 101 or the eNB 102a), then action may be taken to also suspend the S1 user plane between the S-GW 103a and the eNB 102a. The S1 user plane suspension may only affect the manner in which the S-GW 103a is to access the DL user profile of the S-GW 103a. Thus, in this case, it can be considered that only the DL S1 user plane is aborted such that any inbound network origination material is buffered at the S-GW 103a, thereby leaving the delivery to the UE 101. The CN 103 (i.e., the MME 103b and/or the S-GW 103a) is then responsible for identifying the location of the UE and then contacting the material and delivering the data to the aborted UE 101. The CN 103 may also not suspend the S1 user plane for the UE 101 when being informed of the suspension of the RRC connection of the UE.
通常將經由自eNB 102a接收通知訊息來通知CN 103中止。UE 101亦可能告知CN 103連接中止(例如,在其自eNB 102a接收中止訊息之後),但此可為較不佳的,此歸因於此將涉及經由空中介面之額外 發信號的事實。 The CN 103 will typically be notified of the suspension via a notification message received from the eNB 102a. The UE 101 may also inform the CN 103 that the connection is aborted (e.g., after it receives the abort message from the eNB 102a), but this may be less preferred, as this would involve additional extra via the null plane. The fact of signaling.
CN節點(例如,MME 103b及/或S-GW 103a)可維持用於每一UE之有效性指示符(此可有效地與用於UE之作用中S1使用者平面是否存在,或與用於UE之中止S1使用者平面的當前有效性狀態相關)。可基於一或多個單獨子準則(諸如基於位置之準則或基於計時器之準則)來設定此指示符。基於位置之有效性準則可涉及(例如)記錄RRC中止通知最初經接收自之小區或eNB 102a,b...n以及若UE 101之當前已知位置匹配有效性準則,則將位置有效性指示符設定為真,且否則將位置有效性指示符設定為假。基於計時器之有效性準則可涉及若RRC連接中止(或S1連接中止)後經過的時間低於臨限值則將基於計時器之有效性指示符設定為真且否則設定為假。藉由實例,總有效性準則可包含若位置有效性指示符及基於計時器之有效性指示符兩者皆為真,則將總有效性指示符設定為真,且否則將總有效性指示符設定為假。 A CN node (e.g., MME 103b and/or S-GW 103a) may maintain a validity indicator for each UE (this may be effective with the presence of the S1 user plane for the UE, or for The UE suspends the current validity status of the S1 user plane. This indicator can be set based on one or more separate sub-criteria such as location based criteria or timer based criteria. The location-based validity criteria may involve, for example, recording a cell validity indication that the RRC suspension notification was originally received from the cell or eNB 102a, b...n and if the current known location of the UE 101 matches the validity criteria, then the location validity indication The flag is set to true, and otherwise the position validity indicator is set to false. The timer based validity criterion may relate to setting the timer based validity indicator to true if the elapsed time after the RRC connection is aborted (or the S1 connection is aborted) is below the threshold and otherwise set to false. By way of example, the total validity criterion may include setting the total validity indicator to true if both the location validity indicator and the timer based validity indicator are true, and otherwise the total validity indicator Set to false.
圖8中展示與RRC連接中止有關之事件的實例訊息序列圖。僅在告知CN 103中止時執行下文描述之程序的步驟E至G(但未均展示於圖8中)(否則省略此等步驟)。圖8中所展示之RRC連接中止程序的步驟可如下描述: An example message sequence diagram showing events related to RRC connection suspension is shown in FIG. Steps E through G of the procedure described below are performed only when the CN 103 is notified to be aborted (but not shown in Figure 8) (otherwise, these steps are omitted). The steps of the RRC connection abort procedure shown in Figure 8 can be described as follows:
A. UE 101處於連接模式。 A. UE 101 is in connected mode.
B. 判定已符合觸發UE之RRC連接之中止的準則。該判定可由UE 101或由eNB 102a或由UE及eNB兩者進行。若判定由UE 101進行,則UE可將RRC連接中止請求訊息發送至eNB 102a。 B. Determine that the criteria for triggering the RRC connection suspension of the UE have been met. This determination may be made by the UE 101 or by the eNB 102a or by both the UE and the eNB. If the determination is made by the UE 101, the UE may send an RRC Connection Abort Request message to the eNB 102a.
C. 中止UE之RRC連接。此可經由諸如eNB 102a及UE 101兩者中不活動計時器的期滿之隱含機制,或經由諸如自eNB 102a至UE 101之指示RRC連接之中止的訊息或命令之發送之顯式機制達成。在隱含狀況下,eNB 102a及UE 101在大約相同時間進入中止狀態但無中止訊息需要發送。 C. Suspend the RRC connection of the UE. This may be achieved via an implicit mechanism such as an expiration of an inactivity timer in both the eNB 102a and the UE 101, or via an explicit mechanism such as the transmission of a message or command from the eNB 102a to the UE 101 indicating that the RRC connection was aborted. . In the implicit case, the eNB 102a and the UE 101 enter the suspended state at about the same time but no abort message needs to be sent.
D. UE 101及eNB 102a中止RRC連接。有效地「去啟動」Uu連接使得在eNB 102a與UE 101之間不傳送使用者平面資料但RRC連接資訊由UE 101及eNB 102a兩者儲存。在一些狀況下(未圖示),RRC連接資訊亦可由eNB 102a轉遞至RAN 102內之另一eNB,或至核心網路103內之節點,諸如MME 103b。然而,UE 101繼續監視傳呼或下行鏈路資料之通知(見下文)。 D. UE 101 and eNB 102a suspend the RRC connection. The Uu connection is effectively "deactivated" such that no user plane data is transmitted between the eNB 102a and the UE 101 but the RRC connection information is stored by both the UE 101 and the eNB 102a. In some cases (not shown), RRC connection information may also be forwarded by eNB 102a to another eNB within RAN 102, or to a node within core network 103, such as MME 103b. However, the UE 101 continues to monitor notifications of paging or downlink data (see below).
E. eNB 102a可視情況發送S1使用者平面中止訊息至MME 103b及/或SGW 103a(可能經由MME)以告知CN 103 RRC中止。訊息可包括識別已中止之一或多個UE及可能承載識別符之欄位。 E. The eNB 102a may optionally send an S1 User Plane Abort message to the MME 103b and/or the SGW 103a (possibly via the MME) to inform the CN 103 that the RRC is suspended. The message may include identifying one or more UEs that have been aborted and possibly carrying an identifier.
F. MME 103b可去啟動(但儲存於記憶體中)與UE 101相關聯之現有S1-MME(S1c)承載訊文。此處理解「去啟動」以意謂停止經由承載傳送資料。 F. The MME 103b may deactivate (but store in memory) the existing S1-MME (S1c) bearer message associated with the UE 101. "Unboot" is understood here to mean stopping the transfer of data via the bearer.
G. SGW 103a去啟動(但儲存於記憶體中)與UE相關聯之現有S1-u使用者平面承載訊文。再次,此處理解「去啟動」以意謂停止經由承載傳送資料。 G. SGW 103a initiates (but stores in memory) the existing S1-u user plane associated with the UE to carry the message. Again, "going to start" is understood here to mean stopping the transfer of data via the bearer.
由CN 103回應於接收S1中止而採取之特定行動因此可包括: The specific actions taken by the CN 103 in response to receiving the suspension of S1 may thus include:
‧去啟動(但儲存擱置重新啟動)分別在SGW 103a及MME 103b中或在eNB 102a中之一或多個S1使用者平面及/或S1-MME承載訊文 ‧ Go to start (but store shelving restart) one or more S1 user planes and/or S1-MME bears messages in SGW 103a and MME 103b or in eNB 102a respectively
‧在SGW 103a處緩衝任何網路起源使用者資料從而擱置S1使用者平面之回復 ‧ buffer any network origin user data at SGW 103a to put aside the S1 user plane reply
‧監視MME 103b處之來自其RRC連接已中止之UE的入站追蹤區域或其他位置/小區更新(以便幫助判定在需要重新啟動之情況下的有效性狀態) ‧ Monitoring the inbound tracking area or other location/cell update at the MME 103b from the UE whose RRC connection has been aborted (to help determine the validity status if a restart is required)
為了使用以上RRC連接中止程序,無線通信系統之UE 101及網路兩者需要經組態以支援此功能性。RRC連接中止支援指示符可包括於自UE 101傳送至網路之UE能力訊息中。或者,UE中對RRC連接中 止之支援可由eNB隱含地推斷以作為UE指示對另一(但相關聯之)特徵之支援或UE能力訊息內之UE能力的結果。作為進一步替代方案,UE中對RRC連接中止之支援可由eNB隱含地推斷以作為RRC連接中止請求訊息之接收的結果。若eNB判定UE支援RRC連接中止功能性,則eNB 102a可選擇藉由觸發隱含中止之適當參數來組態UE 101(例如,經由中止計時器值之組態)或eNB 102a可選擇發送顯式RRC連接中止訊息。eNB 102a亦可選擇組態UE 101使得允許或不允許RRC中止程序或RRC中止行為之組份。 In order to use the above RRC Connection Abort procedure, both the UE 101 and the network of the wireless communication system need to be configured to support this functionality. The RRC Connection Suspend Support Indicator may be included in the UE Capability Message transmitted from the UE 101 to the network. Or, in the UE, in the RRC connection The support may be implicitly inferred by the eNB as a result of the UE indicating support for another (but associated) feature or UE capability within the UE capability message. As a further alternative, support for RRC connection suspension in the UE may be implicitly inferred by the eNB as a result of receipt of the RRC Connection Abort Request message. If the eNB determines that the UE supports the RRC Connection Abort functionality, the eNB 102a may choose to configure the UE 101 by triggering the appropriate parameters of the implicit suspension (eg, via configuration of the abort timer value) or the eNB 102a may choose to send the explicit The RRC connection aborts the message. The eNB 102a may also choose to configure the UE 101 to allow or disallow the components of the RRC Abort Procedure or RRC Abort Behavior.
在UE之RRC連接中止時,UE 101以與正常閒置模式UE 101之方式類似的方式(亦即,UE 101遵循3GPP TS 36.304之一般行動性程序)執行小區選擇及重新選擇。然而,若使用基於位置之有效性準則,則UE 101可意識到UE 101何時選擇/重新選擇其中其中止RRC連接無效之小區(例如,可能不重新啟動或重新建立中止RRC訊文之小區)。 When the RRC connection suspension of the UE is aborted, the UE 101 performs cell selection and reselection in a manner similar to that of the normal idle mode UE 101 (i.e., the UE 101 follows the general mobility procedure of 3GPP TS 36.304). However, if location-based validity criteria are used, the UE 101 may be aware of when the UE 101 selects/reselects a cell in which the RRC connection is not available (eg, may not restart or re-establish a cell that aborts the RRC message).
圖9中展示實例,其中UE 101最初在eNB1 102a下之小區A(點1)上。中止RRC連接。UE 101自eNB1 102a下之小區A重新選擇至亦為eNB1 102a下之小區B(點2)。小區A及B可能位於有效性區域內,且小區C可能位於有效性區域外部。當UE自小區A移動至小區B時,自基於位置之有效性準則,UE 101知道其中止RRC連接仍有效且因此不需要採取行動。UE 101接著自小區B重新選擇至在不同eNB(亦即,eNB2 102b)下之小區C(點3)。自基於位置之有效性準則,UE 101知道其中止RRC連接在點3處不再有效。在此點(跨越有效性區域邊界),對於UE 101在RRC連接中止期間起作用之方式存在兩個主要替代行動性處置程序。UE 101可經組態以僅執行以下方法中之一者,或選擇性地執行任一方法。 An example is shown in Figure 9, where UE 101 is initially on cell A (point 1) under eNB1 102a. Abort the RRC connection. The UE 101 reselects from the cell A under the eNB1 102a to the cell B (point 2) which is also under the eNB1 102a. Cells A and B may be located within the validity area and cell C may be outside the validity area. When the UE moves from cell A to cell B, from the location-based validity criteria, the UE 101 knows that the RRC connection is still valid and therefore no action is required. The UE 101 then reselects from cell B to cell C (point 3) under a different eNB (i.e., eNB2 102b). From the location-based validity criteria, the UE 101 knows that the RRC connection is no longer valid at point 3. At this point (crossing the validity region boundary), there are two primary alternative action handlers for the manner in which the UE 101 functions during the RRC connection suspension. The UE 101 can be configured to perform only one of the following methods, or to selectively perform either method.
‧行動性替代方案A-不告知網路UE在其中止RRC連接有效之區 域的外部 Alternatively A- ‧ action of not inform the network in which the UE RRC connection retaining region outside of the effective
儘管在點3處UE 101意識到其在其知道其中止RRC連接有效之區域的外部,但UE 101不起始朝向網路之任何發信號。替代地,UE 101繼續執行基於UE之行動性及傳呼接收程序且繼續保持其所儲存RRC訊文資訊。在行動性替代方案A中,只要UE 101保持於小區之註冊追蹤區域(TA)內,則小區重新選擇不觸發朝向網路之任何發信號(亦即,網路不會意識到重新選擇)。然而,若UE 101移動至其註冊TA外部,則UE 101將仍需要執行追蹤區域更新(TAU),正如其處於閒置模式中將必須做的一樣。TA通常將涵蓋許多小區及許多eNB 102a,b,...n。RRC訊文資訊保持儲存於UE 101及一或多個RAN或CN節點(諸如eNB 102、eNB 102b,或MME 103b)中,使得若在資料活動回復之時間處,UE 101已返回至中止RRC連接有效之小區,則可能可使用RRC訊文資訊之部分或全部。取決於有效性區域,中止之RRC連接經重新啟動的小區或eNB可與RRC連接最後中止之小區或eNB相同或不同。 Although at time 3 the UE 101 is aware that it is outside of the area in which it knows that the RRC connection is active, the UE 101 does not initiate any signaling towards the network. Alternatively, the UE 101 continues to perform UE-based mobility and paging reception procedures and continues to maintain its stored RRC message information. In the mobile alternative A, as long as the UE 101 remains within the registration tracking area (TA) of the cell, the cell reselection does not trigger any signaling towards the network (ie, the network is not aware of the reselection). However, if the UE 101 moves outside of its registered TA, the UE 101 will still need to perform a Tracking Area Update (TAU) as it would have to do in idle mode. The TA will typically cover many cells and many eNBs 102a, b, ... n. The RRC message information remains stored in the UE 101 and one or more RAN or CN nodes (such as eNB 102, eNB 102b, or MME 103b) such that if at the time of the data activity reply, the UE 101 has returned to suspend the RRC connection. For a valid cell, some or all of the RRC message information may be used. Depending on the validity area, the aborted RRC connection restarted cell or eNB may be the same or different from the last suspended cell or eNB of the RRC connection.
‧行動性替代方案B-告知網路UE在其中止RRC連接有效之區域的外部 ‧Actional Alternative B - Inform the network UE to be outside the area where the RRC connection is valid
當在點3處UE 101意識到其在其知道其中止RRC連接有效之區域的外部時,在此替代方案中UE 101起始某一發信號以告知網路。在行動性替代方案B的情況下,由UE 101採用之發信號程序可(例如)為以下三個變體中之一者: When the UE 101 is aware at point 3 that it is outside of the area in which it knows that the RRC connection is active, in this alternative the UE 101 initiates a signal to inform the network. In the case of the mobile alternative B, the signaling procedure employed by the UE 101 can be, for example, one of the following three variants:
○發信號變體1-捨棄中止之RRC連接,執行NAS程序且返回至閒置。 ○ Signaling variant 1 - Discard the aborted RRC connection, execute the NAS program and return to idle.
在eNB2 102b下之新小區上,在此變體中UE 101捨棄其中止之RRC連接且藉由起始非存取層(NAS)程序(例如,LTE「TAU」程序)來執行發信號。此可為未修改之TAU程序或可為經修改以包括指示發送 TAU之理由之原因值的TAU程序(亦即,UE已識別中止之RRC連接不再有效)。此TAU程序使MME 103b釋放至eNB1 102a之S1連接且使eNB1 102a釋放中止之RRC連接。在TAU程序完成時,UE 101置於閒置模式中且因此與任一eNB 102a,b...n不具有RRC連接。 On the new cell under eNB2 102b, in this variant the UE 101 discards the aborted RRC connection and performs signaling by initiating a non-access stratum (NAS) procedure (e.g., LTE "TAU" procedure). This may be an unmodified TAU procedure or may be modified to include an indication to send The TAU procedure for the cause of the TAU (ie, the RRC connection that the UE has identified to abort is no longer valid). This TAU procedure causes MME 103b to release the S1 connection to eNB1 102a and cause eNB1 102a to release the suspended RRC connection. Upon completion of the TAU procedure, the UE 101 is placed in idle mode and thus does not have an RRC connection with any of the eNBs 102a, b...n.
○發信號變體2-捨棄中止之RRC連接,執行NAS程序且保持RRC連接。 ○ Signaling variant 2 - Discarding the suspended RRC connection, executing the NAS procedure and maintaining the RRC connection.
在eNB2 102b下之新小區上,在此變體中UE 101捨棄其中止之RRC連接且藉由起始NAS程序(例如,TAU或服務請求)來執行發信號。此可為未修改之TAU或服務請求或可為經修改以包括指示起始程序之理由之原因值的修改之TAU程序或服務請求(亦即,UE已識別中止之RRC連接不再有效)。此TAU/服務請求使MME 103b釋放至eNB1 102a之S1連接且使eNB1 102a釋放中止之RRC連接。MME 103b起始新存取層安全性及資料無線電承載(DRB)之建立及至eNB2 102b之S1使用者平面連接之建立。在TAU/服務請求完成時,UE 101與eNB2 102b保持RRC連接。eNB2 102b可如上文所描述選擇中止RRC連接,使得中止UE 101與eNB2 102b之間的新RRC連接。若如此,則在圖9中UE 101在點3處之狀態將與其在點1處相同,但與eNB2 102b而非與eNB1 102a進行RRC連接。 On the new cell under eNB2 102b, in this variant the UE 101 discards the aborted RRC connection and performs signaling by initiating a NAS procedure (e.g., TAU or service request). This may be an unmodified TAU or service request or may be a modified TAU procedure or service request modified to include a cause value indicating the reason for the initial procedure (ie, the RRC connection that the UE has identified to abort is no longer valid). This TAU/Service Request causes MME 103b to release the S1 connection to eNB1 102a and cause eNB1 102a to release the suspended RRC connection. The MME 103b initiates the establishment of a new access layer security and data radio bearer (DRB) and the establishment of an S1 user plane connection to the eNB2 102b. Upon completion of the TAU/Service Request, the UE 101 maintains an RRC connection with the eNB2 102b. eNB2 102b may choose to suspend the RRC connection as described above such that the new RRC connection between UE 101 and eNB2 102b is suspended. If so, the state of UE 101 at point 3 will be the same as it was at point 1 in Figure 9, but RRC is connected to eNB2 102b instead of eNB1 102a.
○發信號變體3-維持中止之RRC連接,執行發信號以告知CN行動性 ○ Signaling variant 3 - Maintaining the suspended RRC connection and performing a signal to inform the CN of action
在eNB2 102b下之新小區上,在此變體中UE 101維持其中止之RRC訊文且藉由起始程序來執行發信號以便告知CN 103 UE 101具有當前無效之中止之RRC連接。此程序可為NAS程序-舉例而言,其可為未修改之TAU或含有UE 101具有無效之中止RRC連接之新指示的TAU,或其可為新NAS訊息,諸如「NAS行動性更新」訊息。或者,此可為繼而觸發eNB2 102b來告知CN 103 UE 101具有中止但當前無效 之RRC連接的存取層(AS)程序-舉例而言,其可為自UE發送至eNB2 102b之新「RRC行動性更新」訊息,或其可為含有新「行動性更新指示符」的現有RRC訊息,接著繼之以自eNB2 102b至MME 103b之「S1行動性更新」訊息。無論發信號採取何形式,程序之目的皆為其將使S-GW 103a中止S1使用者平面。在程序完成時,UE 101保持其中止之RRC連接,但紮駐於eNB1 102a上。注意,為了執行TAU程序,UE可能必須或可能不必創建與eNB2 102b之RRC連接及與MME 103b之S1連接。若不需要創建此等連接,則此可視為在TAU或其他更新訊息完成時經捨棄的暫時RRC連接。若MME 103b將建立存取層安全性且建立DRB,則此暫時RRC連接將變成「永久」RRC連接且將捨棄中止之RRC連接。 On the new cell under eNB2 102b, in this variant the UE 101 maintains the suspended RRC message and performs a signal by the initiating procedure to inform the CN 103 that the UE 101 has an RRC connection with the current invalidation. This procedure may be a NAS procedure - for example, it may be an unmodified TAU or a TAU containing a new indication that the UE 101 has an invalid termination RRC connection, or it may be a new NAS message, such as a "NAS Mobility Update" message . Alternatively, this may then trigger eNB2 102b to inform CN 103 that UE 101 has an abort but is currently inactive. The RRC-connected Access Stratum (AS) procedure - for example, may be a new "RRC Mobility Update" message sent from the UE to eNB2 102b, or it may be an existing one containing a new "Action Update Indicator" The RRC message is then followed by the "S1 Mobility Update" message from eNB2 102b to MME 103b. Regardless of the form in which the signal is sent, the purpose of the program is to cause the S-GW 103a to suspend the S1 user plane. Upon completion of the procedure, the UE 101 maintains the suspended RRC connection but camps on the eNB1 102a. Note that in order to perform the TAU procedure, the UE may or may not have to create an RRC connection with eNB2 102b and an S1 connection with MME 103b. If it is not necessary to create such a connection, this can be considered as a temporary RRC connection that is discarded when the TAU or other update message is completed. If the MME 103b will establish access layer security and establish a DRB, then the temporary RRC connection will become a "permanent" RRC connection and the aborted RRC connection will be discarded.
行動性替代方案A及B描述與跨越有效性區域邊界之UE行動性事件(亦即,當UE轉變至有效性區域之中或之外時)相關聯的實例程序。其他程序為可能的。亦存在與有效性區域內之小區之間的UE之行動性相關聯的可能行動性替代方案之集合。除了與跨越有效性區域邊界之行動性有關的程序之外,可視情況使用此等「區域內行動性程序」。 Mobility alternatives A and B describe example procedures associated with UE mobility events across the boundaries of the validity region (i.e., when the UE transitions into or out of the validity region). Other programs are possible. There is also a collection of possible actionable alternatives associated with the mobility of the UE between cells within the validity zone. In addition to procedures related to mobility across the boundaries of the effectiveness area, such "intra-regional action procedures" may be used as appropriate.
在第一區域內替代方案中,UE執行發信號以告知RAN及/或CN在有效性區域內之UE之行動性。此可用以允許先前中止之RRC連接根據自舊小區至新小區之UE之行動性而在舊小區與新小區之間遷移。舊小區及新小區可由同一eNB及MME控制,或其可由不同各別舊eNB及新eNB,或不同各別舊MME及新MME控制。藉由進一步參看圖9,小區A、B及C均可能位於有效性區域內。在此狀況下,且當根據第一區域內行動性替代方案操作時,當UE重新選擇至小區C(在eNB2 102b下)時,UE 101與eNB2 102b通信,從而告知eNB2 102b UE在小區內 之存在。此可採用RRC重新建立程序之形式或可包含新行動性更新程序,或現有行動性程序之修改版本,例如基於或包含與交遞有關之發信號的程序。儘管eNB2 102b位於有效性區域內,但其可能擁有或可能尚未擁有與用於UE 101之中止之RRC訊文有關的RRC訊文資料。此將取決於在UE重新選擇至小區C之前,eNB1 102a是否已將RRC訊文資料轉遞至eNB2 102b。RRC訊文資料自eNB1 102a至eNB2 102b之此轉遞可經由使用諸如交遞請求(自eNB1至eNB2)及交遞請求應答(自eNB2至eNB1)訊息之交遞準備發信號(且此在圖23步驟(10)及圖26步驟(8)中展示為經由X2之其他eNB的可選準備)而達成。若eNB2 102b不擁有用於UE 101之RRC訊文資料,其可試圖自RAN 102內之另一節點(諸如eNB1 102a)或自CN 103內之節點(諸如MME 103b)擷取RRC訊文資料。eNB2 102b與諸如eNB1 102a或MME 103b之(若干)其他節點之間的發信號程序用以經由彼等RAN與CN節點之間的網路介面擷取用於UE 101之RRC訊文資料。RRC訊文藉由eNB2 102b自eNB1 102a之擷取可經由使用諸如RLF指示訊息(自eNB1至eNB2)、交遞請求訊息(自eNB1至eNB2)及交遞請求應答訊息(自eNB2至eNB1)之訊文擷取發信號而達成。圖28步驟(4b)及(6)中展示eNB之間的訊文擷取發信號之實例且圖28步驟(5)中展示eNB與MME之間的訊文擷取發信號之實例。由於eNB2 102b亦可與CN節點(諸如MME 103b及/或S-GW 103a)通信,以便切換與UE 101相關聯之作用中或中止之S1連接的路徑,使得其現終止於eNB2 102b而非eNB 102a處。若eNB2 102b希望接受與UE之連接,則eNB 102b與UE 101通信以命令或確認小區C內之RRC連接的重新啟動或重新建立(在此狀況下RRC連接自中止回復),或僅向UE 101確認或應答行動性事件(在此狀況下,此後RRC連接可在UE訊文至eNB2 102b下之小區C的成功傳送之後返回至中止狀態)。 In an alternative in the first region, the UE performs signaling to inform the RAN and/or the mobility of the UE within the validity region. This may be used to allow the previously aborted RRC connection to migrate between the old cell and the new cell based on the mobility of the UE from the old cell to the new cell. The old cell and the new cell may be controlled by the same eNB and the MME, or may be controlled by different old eNBs and new eNBs, or different old MMEs and new MMEs. By referring further to Figure 9, cells A, B and C may all be located within the validity area. In this case, and when operating according to the mobility alternative in the first region, when the UE reselects to cell C (under eNB2 102b), the UE 101 communicates with eNB2 102b, thereby informing the eNB 2 102b that the UE is within the cell Existence. This may take the form of an RRC re-establishment procedure or may include a new mobility update procedure, or a modified version of an existing mobility procedure, such as a procedure based on or containing signaling related to handover. Although eNB2 102b is located within the validity area, it may or may not have possessed RRC message material related to the RRC message for UE 101 suspension. This will depend on whether eNB1 102a has forwarded the RRC message data to eNB2 102b before the UE reselects to cell C. This transfer of RRC message data from eNB1 102a to eNB2 102b may be signaled via the use of handovers such as handover request (from eNB1 to eNB2) and handover request acknowledgment (from eNB2 to eNB1) (and this is shown in the figure) This is achieved in step 23 (10) and in step (8) of Figure 26, which is shown as an optional preparation by other eNBs of X2. If eNB2 102b does not own the RRC message material for UE 101, it may attempt to retrieve RRC message material from another node within RAN 102 (such as eNB1 102a) or from a node within CN 103 (such as MME 103b). The signaling procedure between eNB2 102b and other nodes (such as eNB1 102a or MME 103b) is used to retrieve RRC message data for UE 101 via the network interface between the RAN and the CN node. The RRC message can be retrieved from eNB1 102a by eNB2 102b via using, for example, an RLF indication message (from eNB1 to eNB2), a handover request message (from eNB1 to eNB2), and a handover request response message (from eNB2 to eNB1). The message is reached by signalling. An example of the message extraction signaling between the eNBs is shown in steps (4b) and (6) of FIG. 28 and an example of the message extraction signal between the eNB and the MME is shown in step (5) of FIG. Since eNB2 102b may also be in communication with a CN node (such as MME 103b and/or S-GW 103a) in order to switch the path of the active or suspended S1 connection associated with UE 101, such that it now terminates at eNB2 102b instead of the eNB. 102a. If eNB2 102b wishes to accept a connection with the UE, eNB 102b communicates with UE 101 to command or confirm the restart or re-establishment of the RRC connection within cell C (in this case RRC connection self-suspension reply), or only to UE 101 Acknowledgement or response to an action event (in this case, thereafter the RRC connection may return to the suspended state after successful transmission of the UE message to cell C under eNB2 102b).
在第一區域內行動性替代方案中,每次UE重新選擇有效性區域 內之另一小區時告知RAN。此攜載網路可切換S1連接(自核心網路至RAN)至正確RAN節點(eNB)以便追蹤UE之行動性的優點。因此,去往UE之入站下行鏈路資料可始終(經由S1)投送至正確eNB且遞送至UE,藉此避免首先跨越較寬區域傳呼UE以判定其當前小區或位置之需要。 In the mobility alternative in the first region, each time the UE reselects the validity region The RAN is informed when another cell is inside. This bearer network can switch the S1 connection (from the core network to the RAN) to the correct RAN node (eNB) in order to track the versatility of the UE. Thus, inbound downlink data destined for the UE can always be routed (via S1) to the correct eNB and delivered to the UE, thereby avoiding the need to first page the UE across a wider area to determine its current cell or location.
在第二區域內行動性替代方案中,在有效性區域內之小區重新選擇的時間處,UE可不告知RAN或CN。替代地,UE可在與控制UE當前紮駐之小區的eNB通信之前等待直至存在對使用者平面資料之需要為止。在此等狀況下,若UE位於有效性區域內,則UE可試圖重新啟動或重新建立當前紮駐之小區上的中止之RRC連接。若控制當前紮駐之小區的eNB不擁有用於UE 101之所儲存RRC訊文資料,則其將再次需要以與針對第一區域內行動性替代方案描述之方式類似的方式調用自另一節點擷取RRC訊文之程序。儘管此第二區域內行動性替代方案攜載某一優點,因為可在每一小區重新選擇事件處避免行動性發信號(將中止之RRC連接移動至新小區),但其亦攜載缺點,即在入站下行鏈路資料去往UE之情況下,網路可能不具有關於UE之當前小區或位置的最新資訊。因此,可需要在資料可遞送之前在其他小區中傳呼UE。 In an active alternative in the second region, the UE may not inform the RAN or CN at the time of cell reselection within the validity region. Alternatively, the UE may wait until there is a need for user plane data before communicating with the eNB controlling the cell in which the UE is currently camped. Under such conditions, if the UE is located within the validity zone, the UE may attempt to restart or re-establish the suspended RRC connection on the currently camped cell. If the eNB controlling the currently camped cell does not own the stored RRC message data for the UE 101, it will again need to be invoked from another node in a manner similar to that described for the mobility alternative in the first region. Capture the RRC message program. Although this mobility alternative in the second region carries a certain advantage, since it is possible to avoid operative signaling (moving the suspended RRC connection to the new cell) at each cell reselection event, it also carries shortcomings. That is, in the case where the inbound downlink data goes to the UE, the network may not have the latest information about the current cell or location of the UE. Therefore, it may be desirable to page the UE in other cells before the data can be delivered.
圖10、圖11及圖12中分別展示用於跨越有效性區域邊界之行動性的三個發信號變體(1、2、3)之實例訊息序列圖。此等圖之初始步驟相同,其中三個變體之間的差異發生於由具有修圓末端之矩形識別的區域內。 An example message sequence diagram for three signaling variants (1, 2, 3) for mobility across the boundaries of the validity region is shown in Figures 10, 11 and 12, respectively. The initial steps of these figures are the same, with the difference between the three variants occurring in the area identified by the rectangle with rounded ends.
圖10中所展示之發信號變體1可如下描述。 The signaling variant 1 shown in Figure 10 can be described as follows.
1. UE 101最初與eNB1 102a具有中止之RRC連接。 1. The UE 101 initially has an aborted RRC connection with the eNB1 102a.
2. UE 101執行小區重新選擇至在eNB2 102b之控制下的小區 2. The UE 101 performs cell reselection to the cell under the control of the eNB2 102b.
3. 在小區重新選擇之後,UE 101判定其現處於其中止之RRC連 接可能並不有效的小區中。 3. After the cell reselection, the UE 101 determines that it is currently in the RRC connection The connection may not be valid in the cell.
4. UE 101釋放用於eNB1 102a之中止RRC連接。UE 101進入閒置模式。 4. UE 101 releases for eNB1 102a to suspend the RRC connection. The UE 101 enters an idle mode.
5. UE 101起始TAU。為了執行TAU,UE 101首先建立與eNB2 102b之RRC連接且接著發送追蹤區域更新請求。MME 103b以追蹤區域更新接受來回應。 5. The UE 101 initiates a TAU. In order to perform TAU, the UE 101 first establishes an RRC connection with eNB2 102b and then sends a tracking area update request. The MME 103b responds with a tracking area update accept.
6. 在TAU程序完成之後,UE 101返回至閒置模式。 6. After the TAU procedure is completed, the UE 101 returns to the idle mode.
7. MME 103b亦發送S1釋放命令至eNB1 102a以告知eNB1 102a其可釋放用於UE 101之中止RRC連接及/或釋放用於UE 101之任何作用中或中止S1連接。 7. The MME 103b also sends an S1 Release command to the eNB1 102a to inform the eNB1 102a that it can release any active or suspended S1 connection for the UE 101 to suspend the RRC connection and/or release for the UE 101.
圖11中所展示之發信號變體2可如下描述。 The signaling variant 2 shown in Figure 11 can be described as follows.
1. UE 101最初與eNB1 102a具有中止之RRC連接。 1. The UE 101 initially has an aborted RRC connection with the eNB1 102a.
2. UE 101執行小區重新選擇至在eNB2 102b之控制下的小區。 2. The UE 101 performs cell reselection to the cell under the control of the eNB2 102b.
3. 在小區重新選擇之後,UE 101判定其現處於其中止之RRC連接可能並不有效的小區中。 3. After the cell reselection, the UE 101 determines that it is now in a cell in which the RRC connection may not be valid.
4. UE 101釋放用於eNB1 102a之中止RRC連接。UE 101進入閒置模式。 4. UE 101 releases for eNB1 102a to suspend the RRC connection. The UE 101 enters an idle mode.
5. UE 101起始TAU或服務請求程序。為了執行TAU或服務請求程序,UE 101首先建立與eNB2 102b之RRC連接且接著發送追蹤區域更新請求或服務請求。MME 103b藉由觸發存取層安全性之建立以及DRB及與eNB2 102b之S1使用者平面的建立來回應。圖展示服務請求程序,但TAU程序將相當類似。注意,圖不標記組成總程序之個別訊息。 5. The UE 101 initiates a TAU or service request procedure. In order to perform the TAU or service request procedure, the UE 101 first establishes an RRC connection with eNB2 102b and then sends a tracking area update request or service request. The MME 103b responds by triggering the establishment of an access layer security and the establishment of the DRB and the S1 user plane with the eNB2 102b. The figure shows the service requester, but the TAU program will be quite similar. Note that the figure does not mark individual messages that make up the general program.
6. 在TAU或服務請求程序完成之後,UE與eNB2 102b保持RRC連接。 6. After the TAU or service request procedure is completed, the UE maintains an RRC connection with eNB2 102b.
7. MME 103b亦發送S1釋放命令至eNB1 102a以告知eNB1 102a其 可釋放用於UE 101之中止RRC連接及/或釋放用於UE 101之任何作用中或中止S1連接。 7. The MME 103b also sends an S1 release command to the eNB1 102a to inform the eNB1 102a of its The UE may be released for suspending the RRC connection and/or releasing any active or aborted S1 connection for the UE 101.
圖12中所展示之發信號變體3可如下描述。 The signaling variant 3 shown in Figure 12 can be described as follows.
1. UE 101最初與eNB1 102a具有中止之RRC連接。 1. The UE 101 initially has an aborted RRC connection with the eNB1 102a.
2. UE 101執行小區重新選擇至在eNB2 102b之控制下的小區。 2. The UE 101 performs cell reselection to the cell under the control of the eNB2 102b.
3. 在小區重新選擇之後,UE 101判定其現處於其中止之RRC連接可能並不有效的小區中。 3. After the cell reselection, the UE 101 determines that it is now in a cell in which the RRC connection may not be valid.
4. UE 101維持用於eNB1 102a之中止RRC連接。 4. The UE 101 maintains the RRC connection for eNB1 102a.
5. UE 101起始發信號以告知CN 103 UE 101具有中止之RRC連接但已移動至已知其中止之RRC連接有效之區域的外部。圖12中之實例展示UE 101建立「暫時」RRC連接且UE 101將「行動性更新指示符」包括於RRC連接設立完成訊息中,但其他替代方案為可能的,包括使用TAU程序(在此狀況下發信號變體3類似於發信號變體1,除了中止之RRC連接在UE重新選擇至在eNB2 102b之控制下的小區後經維持且不釋放-亦即,程序按照發信號變體1但不執行步驟4、6及7)。 5. The UE 101 initiates signaling to inform the CN 103 that the UE 101 has an aborted RRC connection but has moved to the outside of the area where the known RRC connection is valid. The example in FIG. 12 shows that the UE 101 establishes a "temporary" RRC connection and the UE 101 includes the "activity update indicator" in the RRC Connection Setup Complete message, but other alternatives are possible, including the use of the TAU procedure (in this case) The outgoing signal variant 3 is similar to the signal variant 1, except that the aborted RRC connection is maintained and not released after the UE reselects to the cell under the control of the eNB2 102b - that is, the procedure follows the signal variant 1 but Steps 4, 6, and 7) are not performed.
6. 自行動性更新指示符之接收,eNB2 102b意識到此RRC連接建立之目的且發送S1行動性更新訊息至MME 103b。回應於此,MME 103b發送S1使用者平面中止訊息至S-GW 103a。 6. Upon receipt of the mobility update indicator, eNB2 102b is aware of the purpose of this RRC connection setup and sends an S1 mobility update message to MME 103b. In response to this, the MME 103b transmits an S1 user plane suspension message to the S-GW 103a.
7. 在接收S1使用者平面中止訊息時,S-GW 103a知道應緩衝用於此UE 101之DL資料,且在資料可遞送之前定位UE 101(亦即,S-GW 103a不應簡單地經由S1轉遞DL資料至eNB1 102a,因為存在UE 101將不定位於eNB1 102a下之可能性)。 7. Upon receiving the S1 User Plane Abort message, the S-GW 103a knows that the DL data for this UE 101 should be buffered and locates the UE 101 before the data can be delivered (ie, the S-GW 103a should not simply pass via S1 forwards the DL data to eNB1 102a because there is a possibility that UE 101 will not be located under eNB1 102a).
8. eNB2 102b指示UE 101釋放「暫時」RRC連接。UE 101仍維持用於eNB1 102a之中止RRC連接但紮駐於eNB2 102b下之小區上。 8. eNB2 102b instructs UE 101 to release a "temporary" RRC connection. The UE 101 still maintains the RRC connection for eNB1 102a but camps on the cell under eNB2 102b.
對於跨越有效性區域邊界之行動性,兩個發信號變體1及2之結果為UE 101釋放中止之RRC連接且只要其移動至已知其中止之RRC連 接有效的區域之外便起始發信號程序。無論何時資料活動回復時,在資料傳送可開始之前建立新RRC連接(以及安全性及DRB)將為必要的。因此,若UE在移動,則發信號變體1及2在減少發信號負載時可能並不極其有效。 For the mobility across the validity area boundary, the result of the two signaling variants 1 and 2 is that the UE 101 releases the suspended RRC connection and as long as it moves to the known RRC connection. The signaling procedure is initiated outside the active area. Whenever a data activity replies, it will be necessary to establish a new RRC connection (and security and DRB) before the data transfer can begin. Therefore, if the UE is moving, signaling variants 1 and 2 may not be extremely effective in reducing the signaling load.
與變體1及2相比,發信號變體3之益處藉由參看圖13進一步解釋,圖13展示與圖9中所展示之行動性情形類似的行動性情形,在圖9中具有中止RRC連接之UE 101移動至其小區之外至其中RRC連接無效之另一小區中的點3,但圖13情形另外展示UE 101移動至點4及5。如上文所解釋,在發信號變體3的情況下,在點3處UE 101具有與eNB1 102a相關聯之中止RRC連接且以信號通知網路其已移動至其知道其中止RRC連接有效的區域之外。S-GW 103a已中止至eNB1 102a之S1使用者平面。 The benefits of signaling variant 3 are further explained by reference to FIG. 13 compared to variants 1 and 2, which shows a mobility scenario similar to the mobility scenario shown in FIG. 9, with suspension RRC in FIG. The connected UE 101 moves to point 3 out of its cell to another cell in which the RRC connection is invalid, but the situation of Figure 13 additionally shows that the UE 101 moves to points 4 and 5. As explained above, in the case of Signaling variant 3, at point 3 the UE 101 has an RRC connection associated with eNB1 102a and signals the network that it has moved to the area where it knows that the RRC connection is valid. Outside. S-GW 103a has been suspended to the S1 user plane of eNB1 102a.
在圖13行動性情形中,在移動至點4之後,UE 101重新選擇回至在eNB1 102a之控制下的小區B。不需要起始朝向網路之發信號。若資料活動將在此點回復,則可重新啟動與eNB1 102a之中止之RRC連接。類似地,若先前已中止SGW 103a與eNB1 102a之間的S1連接,則亦可重新啟動該S1連接。 In the Figure 13 mobility scenario, after moving to point 4, the UE 101 reselects back to cell B under the control of eNB1 102a. There is no need to initiate a signal towards the network. If the data activity will reply at this point, the RRC connection with eNB1 102a may be restarted. Similarly, if the S1 connection between the SGW 103a and the eNB1 102a has been previously suspended, the S1 connection can also be restarted.
在圖13行動性情形中,在移動至點5之後,當與eNB1 102a之RRC連接保持中止時,UE 101重新選擇回至在eNB2 102b之控制下的小區C。儘管UE 101再次移動至其知道其中止RRC連接有效之區域的外部,但不需要起始任何發信號。此係因為SGW 103a與eNB1 102a之間的S1使用者平面連接已在S-GW 103a處中止(此在自點2至點3之轉變時發生)。若資料活動將在此點回復,則將釋放與eNB1 102a之中止之RRC連接且將需要與eNB2 102b建立新RRC連接。 In the Figure 13 mobility scenario, after moving to point 5, when the RRC connection with eNB1 102a remains aborted, UE 101 reselects back to cell C under the control of eNB2 102b. Although the UE 101 moves again to the outside of the area where it knows that the RRC connection is valid, there is no need to initiate any signaling. This is because the S1 user plane connection between SGW 103a and eNB1 102a has been aborted at S-GW 103a (this occurs at the transition from point 2 to point 3). If the data activity will reply at this point, the RRC connection with eNB1 102a will be released and a new RRC connection with eNB2 102b will need to be established.
可見在發信號變體3的情況下,僅在第一次UE 101移動至其知道其中止RRC連接有效的區域之外時需要朝向網路之發信號,且當RRC 連接保持中止時,可執行至區域之中及之外的後續移動而無任何發信號。因此,此方法在減少發信號方面為有效的,發信號本可與定位成靠近2個小區之邊界的UE 101相關聯,其中小區之間的「乒乓」重新選擇可發生。 It can be seen that in the case of signaling variant 3, it is necessary to signal towards the network only when the first time UE 101 moves to an area where it knows that the RRC connection is valid, and when RRC When the connection remains aborted, subsequent movements to and from the zone can be performed without any signal. Thus, this method is effective in reducing signaling, which can be associated with a UE 101 positioned close to the boundary of two cells, where "ping-pong" reselection between cells can occur.
作為發信號變體3之擴展,UE可經組態以每當其移動回至中止RRC連接再次有效之小區或小區群組中時(例如,在eNB1 102a之控制下的小區)另外執行朝向RAN或CN節點之發信號。此可使得能夠重新啟動SGW 103a與eNB1 102a之間的中止之S1連接。 As an extension of the Signaling variant 3, the UE may be configured to additionally perform towards the RAN whenever it moves back to the cell or group of cells in which the RRC connection is again active (eg, the cell under the control of eNB1 102a) Or signal from the CN node. This may enable aborting the S1 connection between the SGW 103a and the eNB1 102a.
可藉由中止RRC連接之基於計時器的期滿補充以上程序。舉例而言,計時器可在中止之時間處,或離開中止小區(或小區群組)之時間處開始。當計時器期滿時,UE 101(以及eNB 102a,b...n及CN 103節點)捨棄任何UE 101訊文資訊且UE 101返回至正常閒置模式操作。若在UE 101及eNB 102a,b...n或CN 103節點兩者內使用共同計時器,則此可發生而在UE 101與RAN或CN節點之任一者之間無任何發信號。若僅在eNB 102a,b...n或CN 103節點側實施計時器,則可需要用於RAN或CN節點之發信號以告知UE正釋放中止之RRC連接且指示至閒置之返回。 The above procedure can be supplemented by aborting the timer-based expiration of the RRC connection. For example, the timer can begin at the time of the suspension, or at the time of leaving the cell (or group of cells). When the timer expires, the UE 101 (and the eNBs 102a, b...n and CN 103 nodes) discard any UE 101 message information and the UE 101 returns to the normal idle mode of operation. If a common timer is used within both the UE 101 and the eNB 102a, b...n or CN 103 nodes, this can occur without any signaling between the UE 101 and any of the RAN or CN nodes. If the timer is implemented only on the eNB 102a, b...n or CN 103 node side, a signal may be required for the RAN or CN node to inform the UE that the aborted RRC connection is being released and to indicate a return to idle.
發信號變體內之一些可能性依賴於使用現有程序(NAS服務請求及TAU)且因此UE 101可假定此等程序由網路支援。然而,發信號變體內之其他可能性依賴於新發信號功能性。在此等狀況下,UE 101在起始朝向eNB2 102b之新發信號之前知道eNB2 102b支援彼發信號可為必要的。為了解決此,eNB2 102b可在系統資訊中廣播支援指示符。此可為指示對所有RRC連接中止功能性之支援的一般指示符或其可僅指示對新發信號功能性之支援(諸如圖12中描述之用於發信號變體3的行動性更新發信號選項)。若UE 101見到eNB2 102b不支援該功能性,則UE 101可後退至根據不需要新發信號功能性之發信號變體表 現(例如,UE可釋放其中止之RRC連接且接著起始TAU或服務請求程序)。 Some of the possibilities of signaling variants depend on the use of existing programs (NAS Service Requests and TAUs) and thus UE 101 can assume that such programs are supported by the network. However, other possibilities for signaling changes depend on new signaling functionality. Under these conditions, it may be necessary for the UE 101 to know that the eNB2 102b supports the other signal before starting the new signal towards the eNB2 102b. To address this, eNB2 102b may broadcast a support indicator in the system information. This may be a general indicator indicating support for all RRC connection abort functionality or it may only indicate support for new signaling functionality (such as the mobility update for signaling variant 3 described in Figure 12) Option). If the UE 101 sees that the eNB2 102b does not support the functionality, the UE 101 may fall back to the signal variant table according to the functionality that does not require new signaling. Now (for example, the UE may release the suspended RRC connection and then initiate the TAU or service request procedure).
在本發明中,「釋放RRC連接」可意謂僅忽略所儲存RRC訊文資料,或將彼資料指示或標示為釋放或無效,或清除彼資料,或自記憶體刪除彼資料。達成釋放RRC連接之相同功能效應的其他方法亦意欲在本發明之範疇內。 In the present invention, "release RRC connection" may mean ignoring only the stored RRC message data, or indicating or indicating that the data is released or invalid, or clearing the data, or deleting the data from the memory. Other methods of achieving the same functional effects of releasing the RRC connection are also intended to be within the scope of the present invention.
在UE之RRC連接中止時,UE 101可以與正常閒置模式UE 101之方式類似的方式(亦即,UE 101遵循3GPP TS 36.304之一般行動性程序)執行小區選擇及重新選擇。另外,UE 101可以與其在閒置模式中所進行之完全相同的方式監視傳呼通道;亦即,UE 101將在適當傳呼出現時刻對其接收器供電以試圖接收傳呼訊息且接著檢查彼傳呼訊息是否有UE之識別碼(例如,S-TMSI)。在接收含有UE之識別碼的傳呼訊息時,UE 101將如下文所描述試圖回復其中止之RRC連接。 When the RRC connection suspension of the UE is aborted, the UE 101 may perform cell selection and reselection in a manner similar to that of the normal idle mode UE 101 (i.e., the UE 101 follows the general mobility procedure of 3GPP TS 36.304). In addition, the UE 101 can monitor the paging channel in exactly the same way as it did in the idle mode; that is, the UE 101 will power its receiver at the time of the appropriate paging appearance in an attempt to receive the paging message and then check if the paging message has The identification code of the UE (for example, S-TMSI). Upon receiving a paging message containing the identity code of the UE, the UE 101 will attempt to reply to the suspended RRC connection as described below.
當DL資料到達用於具有中止RRC連接之UE 101的網路時,網路可有必要聯繫或傳呼UE 101而不管UE 101現可定位於哪一小區中。取決於使用RRC連接中止替代方案A抑或B(上文所描述),及使用行動性替代方案A抑或B(上文亦描述),在DL資料到達S-GW 103a時用於傳呼UE 101之不同情形為可能的。因此現將參看圖14至16描述用於處置網路中之DL資料的三種情形。圖14展示表示當UE 101與eNB1 102a具有中止之RRC連接時處置網路中之DL資料的方法之訊息序列圖。UE 101當前定位於eNB1 102a下之小區上且SGW 103a與eNB1 102a之間的S1使用者平面未中止(1)。當DL資料到達S-GW 103a時(2),S-GW 103a直接將使用者平面資料轉遞至eNB1 102a(3)。此為用於處於RRC連接狀態之UE 101的正常S-GW 103a行為。eNB1 102a緩衝DL資料(4)且接著將傳呼訊息或資料到達通知訊息發送至UE 101(5)。當UE 101 回應於傳呼/通知時,(例如,經由RRC重新啟動請求之發送)可重新啟動中止之RRC連接且接著eNB1 102a將能夠遞送DL資料。圖15展示表示當UE 101與eNB1 102a具有中止之RRC連接時處置網路中之DL資料的方法之訊息序列圖。UE當前定位於不同eNB(亦即,eNB2 102b)下之小區上且SGW 103a與eNB1 102a之間的S1使用者平面未中止(1)。當DL資料到達S-GW 103a時(2),S-GW 103a直接將使用者平面資料轉遞至eNB1 102a(3)。此為用於處於RRC連接中之UE 101的正常S-GW 103a行為。S-GW 103a未意識到UE 101已移動或可移動遠離eNB1 102a且因此S-GW 103a不能採取任何替代行動。eNB1 102a緩衝DL資料(4)且接著將傳呼訊息或資料到達通知訊息發送至UE 101(5)。當UE 101不再定位於eNB1下之小區中時,則無回應(呈UE重新啟動中止之RRC連接之嘗試的形式)經接收(6)。eNB1 102a發送「傳呼升級」訊息至MME 103b(7)以便請求MME 103b經由較廣泛之小區群組傳呼UE 101(8)(例如,MME 103b可在UE 101所註冊之追蹤區域(TA)的所有小區中傳呼UE 101)。 When the DL data arrives at the network for the UE 101 with the RRC connection suspended, the network may be necessary to contact or page the UE 101 regardless of which cell the UE 101 is currently locating. Depending on whether RRC Connection Abort Alternative A or B (described above) is used, and using Mobile Alternative A or B (described above), the difference in paging UE 101 when DL data arrives at S-GW 103a The situation is possible. Thus, three scenarios for handling DL data in a network will now be described with reference to Figures 14-16. 14 shows a message sequence diagram showing a method of handling DL data in a network when the UE 101 has an aborted RRC connection with the eNB1 102a. The UE 101 is currently located on a cell under eNB1 102a and the S1 user plane between SGW 103a and eNB1 102a is not suspended (1). When the DL data arrives at the S-GW 103a (2), the S-GW 103a directly forwards the user plane data to the eNB1 102a (3). This is the normal S-GW 103a behavior for the UE 101 in the RRC connected state. The eNB1 102a buffers the DL data (4) and then transmits a paging message or data arrival notification message to the UE 101 (5). When UE 101 In response to the paging/notification, the RRC connection may be restarted (eg, via transmission of the RRC Restart Request) and then eNB1 102a will be able to deliver the DL data. Figure 15 shows a message sequence diagram showing a method of handling DL data in a network when the UE 101 has an aborted RRC connection with the eNB1 102a. The UE is currently located on a cell under a different eNB (i.e., eNB2 102b) and the S1 user plane between SGW 103a and eNB1 102a is not suspended (1). When the DL data arrives at the S-GW 103a (2), the S-GW 103a directly forwards the user plane data to the eNB1 102a (3). This is the normal S-GW 103a behavior for the UE 101 in the RRC connection. The S-GW 103a is unaware that the UE 101 has moved or can be moved away from the eNB1 102a and thus the S-GW 103a cannot take any alternative action. The eNB1 102a buffers the DL data (4) and then transmits a paging message or data arrival notification message to the UE 101 (5). When the UE 101 is no longer located in the cell under eNB1, then no response (in the form of an attempt to terminate the RRC connection with the UE restart) is received (6). The eNB1 102a sends a "Paging Upgrade" message to the MME 103b (7) to request the MME 103b to page the UE 101 (8) via the wider cell group (e.g., the MME 103b may be all of the Tracking Area (TA) registered by the UE 101). The paging UE 101) in the cell.
圖16展示表示當UE 101與eNB1 102a具有中止之RRC連接且SGW 103a與eNB1 102a之間的S1使用者平面連接中止時(1)處置網路中之DL資料的方法之訊息序列圖。注意S1使用者平面中止可發生以作為RRC連接中止替代方案B之結果或作為具有發信號變體3之行動性替代方案B的結果。UE 101可定位於eNB1 102a(亦即,RRC連接中止之eNB)下之小區中或其可定位於不同eNB 102b,...n之小區下。當DL資料到達S-GW 103a時(2),S-GW 103a緩衝此使用者平面資料(3)。S-GW 103a接著起始朝向MME 103b之傳呼程序以請求MME 103b傳呼UE 101(4)。MME 103b接著經由較廣泛之小區群組傳呼UE 101,例如其可在UE 101所註冊之TA的所有小區中傳呼UE 101。 16 shows a message sequence diagram showing a method of handling DL data in a network when the UE 101 has an aborted RRC connection with the eNB1 102a and the S1 user plane connection between the SGW 103a and the eNB1 102a is suspended (1). Note that the S1 user plane abort may occur as a result of the RRC connection suspension alternative B or as a result of the mobility alternative B with the signal variant 3. The UE 101 may be located in a cell under eNB1 102a (i.e., an eNB with an RRC connection abort) or it may be located under a cell of a different eNB 102b,...n. When the DL data arrives at the S-GW 103a (2), the S-GW 103a buffers the user plane data (3). The S-GW 103a then initiates a paging procedure towards the MME 103b to request the MME 103b to page the UE 101(4). The MME 103b then pages the UE 101 via a wider community group, for example, it can page the UE 101 in all cells of the TA registered by the UE 101.
RRC連接重新啟動可由UE 101中產生之UL資料觸發,或由指示網路具有等待遞送之DL資料的傳呼或DL資料通知訊息之接收觸發。當此發生時,UE 101首先判定其中止之RRC連接針對其當前定位之小區是否有效。取決於判定中止之RRC連接是否有效,許多不同選項為可能的。 The RRC connection reactivation may be triggered by UL data generated in the UE 101 or by the receipt of a paging or DL data notification message indicating that the network has DL data awaiting delivery. When this occurs, the UE 101 first determines whether the RRC connection in which it is suspended is valid for the cell it is currently locating. Many different options are possible depending on whether the RRC connection that determines the suspension is valid.
圖17展示表示用於具有與eNB1 102a之中止RRC連接(1)之UE 101的RRC重新啟動方法之訊息序列圖。對作用中RRC連接之需要由UE 101中產生之UL資料,或由傳呼或DL資料通知訊息的接收(2)觸發。UE 101判定其中止之RRC連接針對其所定位之小區有效(3)。UE 101藉由發送RRC連接重新啟動請求(4)起始RRC連接重新啟動程序。在接收此訊息時,eNB1 102a檢查其具有用於此UE 101之有效中止RRC連接。視情況(且未圖示),其亦可調用自RAN 102或CN 103之另一節點擷取用於UE之RRC訊文資料的程序,且可與RAN或CN之其他節點通信以起始S1之路徑切換。若eNB1 102a具有有效中止RRC連接(或已能夠自另一節點擷取有效中止RRC連接),則其發送RRC連接重新啟動訊息至UE 101(5)且UE 101藉由RRC連接重新啟動完成訊息(6)來回應。RRC連接重新啟動訊息可能包括或可能不包括先前所儲存RRC連接參數之一或多者的組態更新以供UE在重新啟動之後使用。UE 101現可開始發送其可已緩衝之任何使用者平面資料(8)。若S1使用者平面已中止,則eNB1 102a可發送S1使用者平面回復訊息至S-GW 103a(7)(可能經由MME 103b,如由圖17中之虛線展示為可選的)且在接收此訊息時,S-GW 103a可回復S1使用者平面且開始轉遞可在S-GW 103a中緩衝之任何DL使用者平面資料至eNB1 102a(8)。作為替代方案,且若S1連接僅在DL方向上中止,則來自UE 101之UL使用者平面資料的接收可由S-GW 103a使用以作為隱含S1使用者平面回復訊息。 Figure 17 shows a message sequence diagram showing an RRC restart method for a UE 101 having an RRC connection (1) with eNB1 102a. The need for an active RRC connection is triggered by the UL data generated in the UE 101 or by the reception of the paging or DL data notification message (2). The UE 101 determines that the suspended RRC connection is valid for the cell it is targeting (3). The UE 101 initiates an RRC Connection Restart procedure by transmitting an RRC Connection Restart Request (4). Upon receiving this message, eNB1 102a checks that it has a valid abort RRC connection for this UE 101. Depending on the situation (and not shown), it may also call another node from RAN 102 or CN 103 to retrieve the RRC message data for the UE, and may communicate with other nodes of the RAN or CN to initiate S1. The path is switched. If eNB1 102a has a valid suspension RRC connection (or has been able to retrieve a valid suspension RRC connection from another node), it sends an RRC Connection Restart message to UE 101 (5) and UE 101 restarts the completion message via RRC connection ( 6) Come and respond. The RRC Connection Restart message may or may not include configuration updates for one or more of the previously stored RRC connection parameters for use by the UE after reboot. The UE 101 can now begin to send any user plane data (8) that it can buffer. If the S1 user plane has been aborted, eNB1 102a may send an S1 user plane reply message to S-GW 103a (7) (possibly via MME 103b, as shown by the dashed line in FIG. 17) and upon receiving At the time of the message, S-GW 103a may reply to the S1 user plane and begin to forward any DL user plane data that may be buffered in S-GW 103a to eNB1 102a (8). Alternatively, and if the S1 connection is only suspended in the DL direction, receipt of UL user plane data from the UE 101 may be used by the S-GW 103a as an implicit S1 user plane reply message.
圖18展示表示用於具有與eNB1 102a之中止RRC連接(1)(但其不 再有效)之UE 101的另一RRC重新啟動方法之訊息序列圖。對作用中RRC連接之需要由UE 101中產生之UL資料,或由傳呼或DL資料通知訊息的接收(2)觸發。在此狀況下,UE 101判定其中止之RRC連接針對其所定位之小區無效(3)(例如,若UE 101在不位於指定有效性區域內之小區上,或在有效性計時器已過期之情況下,狀況可為如此)。UE 101釋放其中止之RRC連接且進入RRC閒置狀態(4)。UE 101接著起始用於建立朝向eNB2 102b之RRC連接及建立使用者平面無線電承載之正常程序(亦即,UE起始NAS服務請求程序)(5)且在此程序完成時,使用者平面資料傳送為可能的(6)。 Figure 18 shows a representation for having an RRC connection with eNB1 102a (1) (but it is not A message sequence diagram of another RRC restart method of the UE 101 that is valid again). The need for an active RRC connection is triggered by the UL data generated in the UE 101 or by the reception of the paging or DL data notification message (2). In this case, the UE 101 determines that the suspended RRC connection is invalid for its located cell (3) (eg, if the UE 101 is not located on a cell within the specified validity area, or if the validity timer has expired In the case, the situation can be as follows). The UE 101 releases the suspended RRC connection and enters the RRC idle state (4). The UE 101 then initiates a normal procedure for establishing an RRC connection towards the eNB2 102b and establishing a user plane radio bearer (ie, the UE initiates a NAS service request procedure) (5) and when the procedure is completed, the user plane data Transfer is possible (6).
圖19展示表示用於具有eNB1 102a判定為無效之中止RRC連接(1)之UE 101的另一RRC重新啟動方法之訊息序列圖。對作用中RRC連接之需要由UE 101中產生之UL資料,或由傳呼或DL資料通知訊息的接收(2)觸發。UE 101判定其中止之RRC連接針對其所定位之小區有效(3)。UE 101藉由發送RRC連接重新啟動請求(4)起始RRC連接重新啟動程序。在接收此訊息時,eNB1 102a檢查其具有用於此UE 101之中止RRC連接且亦可檢查所儲存RRC連接之所有所需參數是否保持有效。視情況(且未圖示),eNB1 102a亦可調用自RAN 102或CN 103之另一節點擷取用於UE之RRC訊文資料的程序。在圖19中,eNB1 102a判定其不具有用於UE 101之中止RRC連接或所儲存RRC連接參數中之一些無效(5)。此可(例如)歸因於eNB1 102a中之有效性計時器的期滿。或者,其可歸因於eNB1 102a已將與中止RRC連接相關聯之資源中的一些指派至另一UE,或歸因於eNB1 102a另外判定出於任何有效理由,中止RRC連接中之部分或全部不再有效。在其他替代方案中,其可歸因於UE 101存取與具有UE之中止RRC連接之eNB不同的eNB及eNB1 102a自其他eNB擷取RRC訊文資料之失效。eNB1 102a藉由RRC連接重新啟動拒絕訊息(6)回應。UE 101釋放其中止之RRC連接且進 入RRC閒置模式(7)。UE 101接著起始用於建立RRC連接及建立使用者平面無線電承載之正常程序(亦即,UE 101起始NAS服務請求程序)(8)且在此程序完成時,使用者平面資料傳送為可能的(9)。 Figure 19 shows a message sequence diagram showing another RRC restart method for UE 101 having eNB1 102a determined to be inactive to terminate RRC Connection (1). The need for an active RRC connection is triggered by the UL data generated in the UE 101 or by the reception of the paging or DL data notification message (2). The UE 101 determines that the suspended RRC connection is valid for the cell it is targeting (3). The UE 101 initiates an RRC Connection Restart procedure by transmitting an RRC Connection Restart Request (4). Upon receiving this message, eNB1 102a checks if it has a RRC connection for this UE 101 and can also check if all required parameters of the stored RRC connection remain valid. Depending on the situation (and not shown), eNB1 102a may also invoke a procedure for extracting RRC message data for the UE from another node of RAN 102 or CN 103. In FIG. 19, eNB1 102a determines that it does not have some of the invalidation (5) for the UE 101 to suspend the RRC connection or the stored RRC connection parameters. This may, for example, be due to the expiration of the validity timer in eNB1 102a. Alternatively, it may be due to eNB1 102a having assigned some of the resources associated with suspending the RRC connection to another UE, or because eNB1 102a additionally determines to suspend some or all of the RRC connections for any valid reason. No longer valid. In other alternatives, it may be attributable to the UE 101 accessing an eNB different from the eNB having the UE discontinuing the RRC connection and the failure of the eNB1 102a to retrieve the RRC message data from the other eNB. The eNB1 102a responds with a RRC Connection Restart Reject message (6). The UE 101 releases the suspended RRC connection and enters Into the RRC idle mode (7). The UE 101 then initiates a normal procedure for establishing an RRC connection and establishing a user plane radio bearer (i.e., the UE 101 initiates a NAS service request procedure) (8) and when the procedure is completed, user plane data transfer is possible (9).
UE 101在起始朝向eNB 102a,b...n之新發信號RRC連接重新啟動請求/設立/拒絕發信號之前知道eNB 102a,b...n支援彼發信號可為必要的。為了解決此,eNB 102a,b...n可在系統資訊中廣播支援指示符。此可為指示對所有RRC連接中止功能性之支援的一般指示符或其可僅指示對請求/設立/拒絕發信號之支援。若UE 101見到eNB 102a,b...n不支援該功能性,則UE 101將釋放其中止之RRC連接且接著起始服務請求程序。 It may be necessary for the UE 101 to know that the eNBs 102a, b...n support each other before starting the new RRC connection restart request/setup/rejection signaling towards the eNBs 102a, b...n. To address this, the eNBs 102a, b...n can broadcast support indicators in the system information. This may be a general indicator indicating support for all RRC connection abort functionality or it may only indicate support for request/setup/rejection signaling. If the UE 101 sees the eNB 102a, b...n does not support the functionality, the UE 101 will release the aborted RRC connection and then initiate the service request procedure.
eNB 102a,b...n廣播支援指示符之替代方案將為使最初中止UE之RRC連接的eNB 102a,b...n以一方式設定基於區域之有效性準則,以確保UE 101僅試圖重新啟動已知支援該功能性之小區/eNB 102a,b...n上的中止RRC連接。在最簡單狀況下,中止UE之RRC連接的eNB 102a,b...n將僅將定位於相同eNB 102a,b...n下之小區包括於有效性準則中。然而,有效性區域可大體上橫跨由不同eNB控制之小區。 An alternative to the eNB 102a, b...n broadcast support indicator would be to set the area-based validity criteria in such a way that the eNBs 102a, b...n that originally suspended the RRC connection of the UE are in a manner to ensure that the UE 101 only attempts The suspension of the RRC connection on the cell/eNB 102a, b...n, which is known to support this functionality, is restarted. In the simplest case, the eNBs 102a, b...n that suspend the RRC connection of the UE will only include cells located under the same eNB 102a, b...n in the validity criteria. However, the validity area may span substantially across cells controlled by different eNBs.
存在許多組合上文描述之各種RRC連接中止及行動性情形的方式。下文表2提供四個可能組合,但應注意其他組合或子組合為可能的。在表2之實例中,論述RRC連接中止替代方案A或B與行動性替代方案A或B之組合。對於每一組合,表2描述RRC連接及S1使用者平面連接在各時間點將駐存於何狀態。RRC連接及S1使用者平面之狀態可為: There are many ways to combine the various RRC connection aborts and mobility scenarios described above. Table 2 below provides four possible combinations, but it should be noted that other combinations or sub-combinations are possible. In the example of Table 2, the combination of RRC Connection Abort Alternative A or B and Mobility Alternative A or B is discussed. For each combination, Table 2 describes the RRC connection and the state in which the S1 user plane connection will reside at each point in time. The status of the RRC connection and the S1 user plane can be:
‧閒置-不存在RRC連接,未建立S1使用者平面 ‧ Idle - no RRC connection, no S1 user plane established
‧eNB1/2-存在與eNB1或eNB2之RRC連接,在S-GW與eNB1或eNB2之間建立S1使用者平面 ‧ eNB 1/2 - there is an RRC connection with eNB1 or eNB2, establishing an S1 user plane between the S-GW and eNB1 or eNB2
‧中止(eNB1)-存在與eNB1之中止之RRC連接,中止S-GW與 eNB1之間的S1使用者平面 ‧Stop (eNB1) - There is an RRC connection with eNB1, the S-GW is aborted S1 user plane between eNB1
表之欄T0至T2係關於不同時間/例子且係參看圖9而定義。 Columns T0 through T2 are defined with respect to different times/examples and are described with reference to FIG.
‧T0-在RRC連接中止之前,UE 101處於圖9之位置1 ‧T0 - UE 101 is in position 1 of Figure 9 before the RRC connection is aborted
‧T1-在RRC連接中止之後,UE 101處於圖9之位置1(或若UE 101已執行小區重新選擇,則為位置2) ‧T1 - After the RRC connection is aborted, the UE 101 is in position 1 of Figure 9 (or position 2 if the UE 101 has performed cell reselection)
‧T2-UE 101處於圖9之位置3。 ‧T2-UE 101 is in position 3 of FIG.
在此實例中,應注意,對於表2中所展示之組合3及4,展示用於分別對應於可在行動性替代方案B內採用之發信號變體1/2/3之RRC及S1連接的情況之三種可能狀況。 In this example, it should be noted that for combinations 3 and 4 shown in Table 2, RRC and S1 connections are shown for respectively corresponding to the signal variant 1/2/3 that can be employed in the mobile alternative B. Three possible situations of the situation.
另外,應注意,出於完整性在表中展示對應於RRC連接中止替代方案B及行動性替代方案B之組合4。然而,藉由此替代方案,只要RRC連接中止S1使用者平面便中止,此意謂任何DL資料將在S-GW 103a處經緩衝直至UE 101被傳呼/通知且已重新啟動其RRC連接為 止。因此,當UE 101移動至在不同eNB 102a,b,...n下之小區時可存在執行任何發信號之極少益處。 In addition, it should be noted that the combination 4 corresponding to the RRC connection suspension alternative B and the mobile alternative B is shown in the table for completeness. However, with this alternative, as long as the RRC connection aborts the S1 user plane, this means that any DL data will be buffered at the S-GW 103a until the UE 101 is paged/notified and its RRC connection has been restarted as stop. Thus, there may be little benefit in performing any signaling when the UE 101 moves to a cell under a different eNB 102a, b, ... n.
考慮到上文已描述根據本發明之用於處置RRC連接中止的各種可能程序,現將描述展示此等各種中止RRC連接處置程序可如何一起操作之許多實例情形。 In view of the various possible procedures for handling RRC connection suspension in accordance with the present invention have been described above, a number of example scenarios showing how such various suspension RRC connection handlers can operate together will now be described.
圖20展示表示根據上文描述之中止替代方案A(未告知CN RRC中止)及行動性替代方案A(未告知網路行動性)之在UE 101與RAN 102之間的RRC連接之中止及稍後嘗試之重新啟動的可能處置之訊息序列圖,其中(在重新啟動嘗試之時間處)UE 101已移動至中止RRC連接有效的區域之外。歸因於此處理,CN 103未意識到RRC連接中止且因此S1連接未中止。當DL資料到達網路時,網路不會肯定地知道UE 101當前定位之小區,亦不知道任何中止RRC訊文是否有效。S1連接未中止且保持作用中,因此傳入於SGW 103a處的DL資料經由S1轉遞至eNB1 102a。eNB1 102a試圖經由傳呼訊息之傳輸聯繫UE 101且在缺乏回應的情況下,使用傳呼升級方法以便聯繫UE 101。中止RRC連接在發現UE 101之小區中無效且因此經釋放且針對待遞送之資料建立新近RRC連接。 Figure 20 shows the RRC connection suspension between the UE 101 and the RAN 102 and the suspension of the alternative A (not informed of the CN RRC suspension) and the mobility alternative A (not informed of the network mobility) according to the above description. A message sequence diagram of a possible disposition of a later attempted restart, where (at the time of the restart attempt) the UE 101 has moved outside of the area where the suspension of the RRC connection is valid. Due to this processing, the CN 103 is unaware that the RRC connection is aborted and thus the S1 connection is not suspended. When the DL data arrives at the network, the network does not know with certainty the cell currently located by the UE 101, and does not know whether any suspension of the RRC message is valid. The S1 connection is not aborted and remains active, so the DL data passed in to the SGW 103a is forwarded to the eNB1 102a via S1. The eNB1 102a attempts to contact the UE 101 via the transmission of the paging message and, in the absence of a response, uses the paging upgrade method to contact the UE 101. The abort RRC connection is invalid in the cell in which the UE 101 is found and is thus released and a new RRC connection is established for the data to be delivered.
參看圖20,在此情形中序列之步驟為: Referring to Figure 20, the sequence of steps in this case is:
1. UE 101最初處於RRC連接中而使用者平面承載經建立使得使用者資料有可能在UE 101與S-GW 103a之間傳送且接著繼續傳送至P-GW 103c(圖20中未圖示)及更遠處。 1. The UE 101 is initially in an RRC connection and the user plane bearer is established such that user data is likely to be transferred between the UE 101 and the S-GW 103a and then continues to be transmitted to the P-GW 103c (not shown in Figure 20). And further afield.
2. 符合觸發中止之準則且eNB-1 102a決定將UE 101改變為UE控制行動性且中止RRC連接。 2. Compliance with the criteria for triggering abort and eNB-1 102a decides to change UE 101 to UE control mobility and suspend RRC connection.
3. eNB-1 102a將指示UE 101進入UE控制行動性且中止RRC連接之訊息發送至UE 101。舉例而言,此訊息可稱作如圖中所展示之RRC 連接中止,或可稱作RRC UE控制行動性命令,或某一其他合適名稱。 3. The eNB-1 102a sends a message indicating that the UE 101 enters the UE control mobility and suspends the RRC connection to the UE 101. For example, this message can be referred to as the RRC shown in the figure. The connection is aborted, or may be referred to as an RRC UE Control Action Command, or some other suitable name.
4. eNB-1 102a及UE 101中止RRC連接。UE 101執行與閒置模式之UE控制行動性類似的UE控制行動性。 4. eNB-1 102a and UE 101 suspend the RRC connection. The UE 101 performs UE control mobility similar to the UE control mobility of the idle mode.
5. 當UE 101已中止RRC連接且進入UE控制行動性時,小區重新選擇可發生。只要UE 101保持於註冊TA內,則此等重新選擇不觸發朝向網路之任何發信號(亦即,在行動性替代方案A中網路不會意識到重新選擇)。圖20中在具有修圓末端之上部矩形中指示步驟1至5(除了小區重新選擇)。 5. Cell reselection may occur when the UE 101 has suspended the RRC connection and entered the UE control mobility. As long as the UE 101 remains within the registered TA, then such reselection does not trigger any signaling towards the network (i.e., the network is not aware of the reselection in the mobile alternative A). Steps 1 through 5 (in addition to cell reselection) are indicated in Figure 20 with a rectangle above the rounded end.
6. 在一時段之後,當再一次需要與UE 101之RRC連接時,在網路起源之狀況下,使用者平面資料到達S-GW 103a。S-GW 103a立即在S1使用者平面介面上將資料轉遞至eNB1 102a。在使用者平面資料到達eNB1 102a時,eNB1 102a將傳呼訊息發送至UE 101以便觸發RRC連接重新啟動。然而,在此狀況下,eNB-1 102a不接收對此傳呼訊息之任何回應,且因此eNB-1 102a可得出UE 101不再定位於處於其控制下之小區中的結論。為了聯繫可能定位於在不同eNB 102b,...n下之小區中的UE 101,eNB-1 102a必須升級傳呼,此意謂其必須觸發MME 103b發送傳呼請求至其他eNB 102b,...n以傳呼UE 101當前所註冊之TA內的UE 101。在圖20中之此實例情形中,升級使eNB-2 102b發送傳呼且此由UE 101成功地接收。 6. After a period of time, when the RRC connection with the UE 101 is required again, the user plane data arrives at the S-GW 103a in the event of network origin. The S-GW 103a immediately forwards the data to the eNB1 102a on the S1 user plane interface. When the user plane data arrives at eNB1 102a, eNB1 102a sends a paging message to UE 101 to trigger an RRC connection restart. However, in this case, eNB-1 102a does not receive any response to this paging message, and thus eNB-1 102a may conclude that UE 101 is no longer located in the cell under its control. In order to contact the UE 101 that may be located in a cell under a different eNB 102b,...n, the eNB-1 102a must upgrade the paging, which means that it must trigger the MME 103b to send a paging request to the other eNB 102b,...n To page the UE 101 within the TA currently registered by the UE 101. In this example scenario in Figure 20, the upgrade causes eNB-2 102b to send a page and this is successfully received by UE 101.
7. UE 101發送RRC連接重新啟動請求至eNB-2 102b。作為替代步驟7,UE 101可能夠在發送RRC連接重新啟動請求至eNB-2 102b之前判定在此小區上重新啟動嘗試將不成功。舉例而言,UE 101可能夠自小區之小區ID,或小區之eNB ID或可在傳呼訊息中發送之某一額外指示符判定此。若UE 101確實判定重新啟動將不成功,則UE 101不傳輸RRC連接重新啟動請求而直接跳至步驟9。 7. The UE 101 sends an RRC Connection Restart Request to the eNB-2 102b. As an alternative step 7, the UE 101 may be able to determine that the restart attempt on this cell will not be successful before transmitting the RRC Connection Restart Request to the eNB-2 102b. For example, the UE 101 may be able to determine this from the cell ID of the cell, or the eNB ID of the cell or some additional indicator that may be sent in the paging message. If the UE 101 does determine that the restart will not be successful, the UE 101 does not transmit the RRC Connection Restart Request and jumps directly to step 9.
8. 歸因於在此狀況下eNB-2 102b不具有UE之中止RRC連接(或不能成功地自另一節點擷取中止RRC連接)的事實,eNB-2 102b藉由RRC連接拒絕回應。 8. Due to the fact that eNB-2 102b does not have the UE suspending the RRC connection (or cannot successfully suspend the RRC connection from another node) in this situation, eNB-2 102b rejects the response by means of the RRC connection.
9. UE 101釋放其(中止)RRC連接且進入RRC閒置模式。UE 101接著執行正常RRC連接建立程序以便設立新RRC連接且繼續使用者平面活動。 9. The UE 101 releases its (suspend) RRC connection and enters the RRC idle mode. The UE 101 then performs a normal RRC connection setup procedure to set up a new RRC connection and continue user plane activity.
圖21展示表示根據上文描述之中止替代方案B及行動性替代方案A之在UE 101與RAN 102之間的RRC連接之中止及稍後重新啟動的可能處置之訊息序列圖,其中UE 101最初移動至中止RRC連接有效的小區之外(且可能已重新選擇許多次)但當資料活動將回復時,UE 101再次紮駐於中止RRC連接有效之小區上且因此其可成功地重新啟動。 21 shows a message sequence diagram showing possible handling of RRC connection suspension and later restart between UE 101 and RAN 102 in accordance with the above description of Alternative B and Mobility Alternative A, where UE 101 is initially Moving to outside the cell where the RRC connection is active (and may have been reselected many times) but when the data activity will reply, the UE 101 is again camped on the cell where the RRC connection is suspended and thus it can be successfully restarted.
根據中止替代方案B(告知CN RRC中止)及行動性替代方案A(未告知網路行動性),若UE 101重新選擇遠離中止RRC連接有效之小區(或若干小區),則UE 101不執行告知網路之任何發信號(除非重新選擇導致UE跨越TA邊界使得需要「正常」TAU)。因此當DL資料到達時,網路不會肯定地知道UE當前定位之小區,因此亦不知道任何中止RRC訊文是否有效。 According to the suspension alternative B (informing the CN RRC suspension) and the mobility alternative A (not informing the network mobility), if the UE 101 reselects a cell (or several cells) that is far from the suspension of the RRC connection, the UE 101 does not perform the notification. Any signalling of the network (unless reselection causes the UE to cross the TA boundary so that a "normal" TAU is required). Therefore, when the DL data arrives, the network does not know the cell currently located by the UE, and therefore does not know whether any suspension of the RRC message is valid.
1. UE 101最初處於RRC連接中而使用者平面承載經建立使得使用者資料有可能在UE 101與S-GW 103a之間傳送且接著繼續傳送至P-GW 103c(圖21中未圖示)及更遠處。 1. The UE 101 is initially in an RRC connection and the user plane bearer is established such that user data is likely to be transferred between the UE 101 and the S-GW 103a and then continues to be transmitted to the P-GW 103c (not shown in Figure 21). And further afield.
2. 符合觸發中止之準則且eNB-1 102a決定將UE 101改變為UE控制行動性且中止RRC連接。 2. Compliance with the criteria for triggering abort and eNB-1 102a decides to change UE 101 to UE control mobility and suspend RRC connection.
3. eNB-1 102a將指示UE 101進入UE控制行動性且中止RRC連接之訊息發送至UE 101。舉例而言,此訊息可稱作如圖21中所展示之 RRC連接中止,或可稱作RRC UE控制行動性命令,或某一其他合適名稱。 3. The eNB-1 102a sends a message indicating that the UE 101 enters the UE control mobility and suspends the RRC connection to the UE 101. For example, this message can be referred to as shown in FIG. The RRC connection is aborted, or may be referred to as an RRC UE Control Action Command, or some other suitable name.
4. eNB-1 102a及UE 101中止RRC連接。UE 101執行與閒置模式之UE控制行動性類似的UE控制行動性。 4. eNB-1 102a and UE 101 suspend the RRC connection. The UE 101 performs UE control mobility similar to the UE control mobility of the idle mode.
5. eNB-1 102a告知CN 103(MME 103b或S-GW 103a或兩者)關於RRC中止。告知CN 103之訊息可稱作S1使用者平面中止。在藉由CN 103接收此訊息時,S1使用者平面承載保持為建立的但經中止(使用者平面傳輸停止)且S-GW 103a在接收下行鏈路使用者平面資料時將不立即經由S1使用者平面朝向eNB-1 102a轉遞彼資料且將替代地緩衝資料從而擱置其遞送。S1使用者平面中止可僅影響S-GW 103a對待到達S-GW 103a之DL使用者資料的方式。因此,在此狀況下,其可視為僅DLS1使用者平面中止。 5. eNB-1 102a informs CN 103 (MME 103b or S-GW 103a or both) about RRC suspension. The message informing CN 103 can be referred to as the S1 user plane abort. When receiving this message by CN 103, the S1 user plane bearer remains established but terminated (user plane transmission is stopped) and S-GW 103a will not immediately use S1 when receiving downlink user plane data. The plane forwards the data towards eNB-1 102a and will instead buffer the data to shelve its delivery. The S1 user plane suspension may only affect the manner in which the S-GW 103a is to access the DL user profile of the S-GW 103a. Therefore, in this case, it can be considered as only the DLS1 user plane abort.
6. 當UE 101已中止RRC連接且進入UE控制行動性時,小區重新選擇可發生。只要UE 101保持於註冊TA內,則此等重新選擇不觸發朝向網路之任何發信號(亦即,網路不會意識到重新選擇)。圖21中在具有修圓末端之上部矩形中展示步驟1至6(除了小區重新選擇)。 6. Cell reselection may occur when the UE 101 has suspended the RRC connection and entered the UE control mobility. As long as the UE 101 remains within the registered TA, such reselection does not trigger any signaling towards the network (i.e., the network is not aware of the reselection). Steps 1 through 6 (except for cell reselection) are shown in Figure 21 with a rectangle above the rounded end.
7. 在網路起源狀況下,對於藉由UE 101之資料傳送啟動,使用者平面資料到達S-GW 103a。歸因於S1使用者平面中止,此使用者平面資料在S-GW 103a處經緩衝而非立即在S1使用者平面介面上轉遞至eNB-1 102a。S-GW 103a接著起始傳呼程序以聯繫其可定位之無論哪一小區中的UE 101。此與UE 101在閒置時所使用的傳呼程序相當類似(或相同)。將傳呼指示自S-GW 103a發送至MME 103b且至定位於UE 101所註冊之TA內的一或多個eNB 102a,b...n。UE 101中傳呼訊息之接收觸發UE 101嘗試RRC連接重新啟動。此展示於具有修圓末端之下部矩形內。在UE起源狀況下,下部矩形中之元素不發生且使用者資料到達UE 101直接觸發UE 101嘗試RRC連接重新啟動。 7. In the case of network origination, user plane data arrives at S-GW 103a for data transfer initiated by UE 101. Due to the S1 user plane abort, this user plane profile is buffered at S-GW 103a and not immediately forwarded to eNB-1 102a at the S1 user plane interface. The S-GW 103a then initiates a paging procedure to contact the UE 101 in whichever cell it can locate. This is quite similar (or the same) to the paging procedure used by the UE 101 when it is idle. The paging indication is sent from the S-GW 103a to the MME 103b and to one or more eNBs 102a, b...n located within the TA registered by the UE 101. The receipt of the paging message in the UE 101 triggers the UE 101 to attempt an RRC connection restart. This is shown in the rectangle below the rounded end. In the UE origin condition, the elements in the lower rectangle do not occur and the user data arrives at the UE 101 directly triggers the UE 101 to attempt an RRC connection restart.
8. 圖21中之步驟的剩餘者表示當UE 101在相關聯之eNB-1 102a確實具有UE之中止RRC連接(亦即,eNB確實具有儲存之UE訊文資訊)的小區上嘗試RRC連接重新啟動時之事件的序列。此小區可為當RRC連接中止時UE 101所在之小區或其可為由同一eNB-1 102a控制的另一小區或其可為由另一eNB控制之小區,但該另一eNB擁有(或能夠擷取)用於UE之必要RRC訊文資料。UE 101發送RRC連接重新啟動請求至eNB-1 102a。 8. The remainder of the steps in FIG. 21 indicates that the UE 101 attempts to RRC connection re-establishment on the cell where the associated eNB-1 102a does have the UE suspend RRC connection (ie, the eNB does have stored UE message information). The sequence of events at startup. The cell may be a cell in which the UE 101 is located when the RRC connection is aborted or it may be another cell controlled by the same eNB-1 102a or it may be a cell controlled by another eNB, but the other eNB owns (or can Capture the necessary RRC message data for the UE. The UE 101 transmits an RRC Connection Restart Request to the eNB-1 102a.
9. 歸因於在此狀況下eNB-1 102a確實具有UE之中止RRC連接的事實,eNB-1 102a藉由RRC連接重新啟動回應。若eNB-1 102a希望改變先前中止之組態的任何部分,則此訊息可含有一些新的或更新之參數值,或其可為極其簡單之「繼續」訊息(例如,無任何參數或組態更新)。 9. Due to the fact that eNB-1 102a does have the UE suspending the RRC connection in this situation, eNB-1 102a restarts the response by means of the RRC connection. If eNB-1 102a wishes to change any part of the previously aborted configuration, this message may contain some new or updated parameter values, or it may be an extremely simple "continue" message (eg, without any parameters or configuration) Update).
10. UE 101藉由RRC連接重新啟動完成來回應。此為可選步驟,僅在eNB-1 102a要求RRC連接重新啟動已成功之額外保證時需要此步驟。在UE起源之狀況下,只要接收到RRC連接重新啟動便可開始傳輸來自UE之上行鏈路使用者資料。 10. The UE 101 responds by completing the RRC connection restart. This is an optional step and is only required if eNB-1 102a requires an additional guarantee that the RRC connection restart has succeeded. In the case of the origin of the UE, the uplink user profile from the UE can be started as long as the RRC connection restart is received.
11. eNB-1 102a告知CN 103(MME 103b或SGW 103a或兩者)S1使用者平面可繼續。此可為如圖21中所展示之顯式訊息。或者,在UE起源狀況下,且在最初僅中止S1之DL的狀況下,自eNB-1 102a發送至S-GW 103a之來自UE 101的上行鏈路使用者資料可由SGW 103a視為隱含「繼續」命令。 11. eNB-1 102a informs CN 103 (MME 103b or SGW 103a or both) that the S1 user plane can continue. This can be an explicit message as shown in FIG. Alternatively, in the case of UE origination, and in the case where only the DL of S1 is initially suspended, the uplink user profile from the UE 101 transmitted from the eNB-1 102a to the S-GW 103a may be regarded as implicit by the SGW 103a. Continue with the order.
12. 在接收繼續S1使用者平面之指示時,S-GW 103a將停止緩衝下行鏈路使用者平面資料且將經由重新啟動之S1使用者平面將該下行鏈路使用者平面資料轉遞至eNB-1 102a以用於傳輸至UE 101。 12. Upon receiving the indication to continue the S1 user plane, the S-GW 103a will stop buffering the downlink user plane data and will forward the downlink user plane data to the eNB via the restarted S1 user plane. -1 102a for transmission to the UE 101.
圖22展示表示UE 101與RAN 102之間的RRC連接之中止及稍後重 新啟動的可能處置之訊息序列圖。根據上文描述之中止替代方案A及行動性替代方案B,當UE 101移動至RRC連接有效的小區之外時,未告知CN 103 RRC中止,但UE 101確實告知CN 103。 Figure 22 shows the termination of the RRC connection between the UE 101 and the RAN 102 and later on A sequence diagram of newly launched possible dispositions. According to the above description, the alternative A and the mobile alternative B, when the UE 101 moves outside the cell in which the RRC connection is active, the CN 103 RRC suspension is not informed, but the UE 101 does inform the CN 103.
總而言之,此展示當UE 101移動至中止RRC連接有效的小區之外,且經由行動性更新訊息告知CN 103關於移動至中止小區之外使得S1接著經中止時執行的方法。當DL資料到達UE 101經傳呼之網路時,中止RRC連接在小區中無效且因此經釋放且針對待遞送之資料建立新近RRC連接。 In summary, this shows that when the UE 101 moves to a cell where the suspension of the RRC connection is active, and via the mobility update message, the CN 103 is informed about the method of moving to the out of the suspended cell such that S1 is then aborted. When the DL data arrives at the paging 101 of the UE 101, the RRC connection is suspended in the cell and is therefore released and a new RRC connection is established for the data to be delivered.
在此狀況下,CN 103最初不知道UE之RRC連接已中止。然而,用於每一連接模式UE 101之有效性指示符仍可維持於CN 103中。可基於CN 103(例如,MME 103b)已知之位置更新資訊設定此指示符。在連接模式中時,CN 103預期UE 101行動性事件(例如至另一小區或eNB 102b,...n)導致S1-U及S1-MME承載至彼eNB之對應交遞。僅預期來自閒置模式UE之追蹤區域更新。當符合有效性準則時,CN 103繼續針對連接模式UE 101表現為正常的。 In this case, the CN 103 initially does not know that the UE's RRC connection has been aborted. However, the validity indicator for each connected mode UE 101 can still be maintained in the CN 103. This indicator can be set based on location update information known to the CN 103 (e.g., MME 103b). In the connected mode, the CN 103 expects the UE 101 mobility event (e.g., to another cell or eNB 102b, ... n) to cause the S1-U and S1-MME to carry the corresponding handover to the eNB. Only tracking area updates from idle mode UEs are expected. When the validity criteria are met, the CN 103 continues to behave normally for the connected mode UE 101.
使用行動性替代方案B意謂具有中止RRC連接(且CN 103可能意識到或可能尚未意識到此)之UE 101可執行自主行動性程序且可經組態以在其離開或重新進入中止RRC連接有效之小區(或小區群組)的情況下發送追蹤區域更新(或其他位置更新)訊息至CN 103(例如,MME 103b)。 Using a mobile alternative B means that the UE 101 with the abort RRC connection (and the CN 103 may or may not be aware of this) may perform an autonomous mobile procedure and may be configured to suspend the RRC connection upon it leaves or re-enters A tracking area update (or other location update) message is sent to the CN 103 (e.g., MME 103b) in the case of a valid cell (or group of cells).
若在中止之時間處未告知CN 103,則MME 103b最初咸信UE 101仍為RRC連接的(亦即,未中止),除非其以其他方式瞭解。若UE 101經組態以在中止時發送行動性替代方案B之額外/擴充行動性訊息(例如,TAU),則MME 103b隨後可自TAU之接收推斷UE之RRC連接實際上已中止且UE 101當前紮駐於中止RRC連接無效之小區(或小區群組)上。因此,MME 103b同時且間接地被告知UE之RRC連接已中止及其 當前無效兩者。因此將瞭解,藉由UE 101進行之額外/擴充行動性訊息的發信號亦可充當告知CN節點(諸如MME 103b及SGW 103a)先前之RRC中止的訊息。 If the CN 103 is not informed at the time of the suspension, the MME 103b initially believes that the UE 101 is still RRC connected (i.e., not aborted) unless otherwise known. If the UE 101 is configured to transmit an additional/extended mobility message (e.g., TAU) of the mobility alternative B upon abort, the MME 103b may then infer from the receipt of the TAU that the RRC connection of the UE has actually been aborted and the UE 101 Currently camped on a cell (or cell group) where the suspension of the RRC connection is invalid. Therefore, the MME 103b is simultaneously and indirectly informed that the UE's RRC connection has been suspended and Currently invalid. It will thus be appreciated that signaling of additional/amplified mobility messages by the UE 101 may also serve as a message to inform the CN nodes (such as MME 103b and SGW 103a) of previous RRC suspensions.
在此狀況下,CN 103(例如,MME 103b)可選擇隨後中止S1連接。MME 103b可視情況在其自UE 101接收指示UE 101已重新進入中止RRC連接再一次有效之小區(或小區群組)的進一步TAU或行動性訊息的情況下重新啟動S1。 In this case, the CN 103 (e.g., MME 103b) may choose to subsequently suspend the S1 connection. The MME 103b may optionally restart S1 if it receives a further TAU or mobility message from the UE 101 indicating that the UE 101 has re-entered the cell (or cell group) in which the RRC connection is once again active.
在此實例情形3內,許多不同子情形為可能的,此取決於引起對於RRC連接之需要的資料活動為網路起源抑或UE起源的,及中止RRC連接在需要重新啟動之時間處是否仍有效。此等不同子情形影響無線通信系統處置回復Uu使用者平面通信之處理的方式。參看圖22,以下內容描述當資料活動為網路起源的且中止RRC連接在需要重新啟動之時間處無效時發生的處理。可使用先前描述之處理步驟的邏輯組合導出用於其他子情形之處理且該處理在本發明之範疇內。 In this example scenario 3, many different sub-cases are possible, depending on whether the data activity causing the RRC connection is network origin or UE origin, and whether the RRC connection is still valid at the time when the restart is required. . These different sub-cases affect the manner in which the wireless communication system handles the processing of replying Uu user plane communications. Referring to Figure 22, the following describes the processing that occurs when the data activity is of network origin and the RRC connection is suspended at the time when the restart is required. The processing for other sub-cases can be derived using a logical combination of the processing steps previously described and is within the scope of the present invention.
1. 在RRC連接中止(上部修圓矩形中所展示)期間,eNB-1 102a不告知CN 103 RRC中止且S1連接經維持。 1. During the RRC Connection Abort (shown in the upper rounding rectangle), eNB-1 102a does not inform CN 103 that RRC is suspended and that the S1 connection is maintained.
2. UE 101重新選擇至RRC連接無效之指派至eNB-2 102b的小區。 2. The UE 101 reselects the cell assigned to the eNB-2 102b to the RRC connection invalid.
3. UE 101可能經由與eNB-2 102b之暫時RRC連接,或經由不需要建立與eNB2 102b之暫時RRC連接的其他手段來發送「擴充」行動性訊息至MME 103b(中部矩形)。 3. The UE 101 may send an "enhanced" mobility message to the MME 103b (middle rectangle) via a temporary RRC connection with the eNB-2 102b, or via other means that does not require a temporary RRC connection with the eNB2 102b.
4. 在接收行動性訊息時,MME 103b將中止SGW 103a與eNB1 102a之間的現有S1連接之訊息發送至S-GW 103a。因此,MME 103b及S-GW 103a已被隱含地告知先前已中止用於UE 101之RRC連接且中止之RRC連接當前無效。 4. Upon receiving the mobile message, the MME 103b transmits a message suspending the existing S1 connection between the SGW 103a and the eNB1 102a to the S-GW 103a. Therefore, the MME 103b and the S-GW 103a have implicitly informed that the RRC connection that was previously suspended for the UE 101 and the suspension is currently invalid.
5. 定址至UE 101之資料自外部網路104到達PGW 103c(圖22中未 圖示)中。 5. The data addressed to the UE 101 arrives at the PGW 103c from the external network 104 (not shown in Figure 22) In the picture).
6. 資料經由建立之S5/8承載轉遞至UE之SGW 103a 6. The data is forwarded to the SGW 103a of the UE via the established S5/8 bearer
7. SGW 103a及MME 103b意識到用於此UE 101之RRC連接經中止且資料不能經由(中止)S1-U連接轉遞。因此,資料暫時由SGW 103a緩衝。 7. The SGW 103a and the MME 103b recognize that the RRC connection for this UE 101 has been aborted and that the data cannot be forwarded via the (suspended) S1-U connection. Therefore, the data is temporarily buffered by the SGW 103a.
8. CN 103(例如,MME 103b)檢查用於中止RRC連接之區域儲存有效性狀態。舉例而言,此可涉及檢查如先前描述之位置有效性指示符或基於計時器之有效性指示符 8. The CN 103 (e.g., the MME 103b) checks the area storage validity status for suspending the RRC connection. For example, this may involve examining a location validity indicator or a timer based validity indicator as previously described.
9. CN 103(例如,MME 103b)判定中止之RRC連接無效。 9. The CN 103 (e.g., MME 103b) determines that the suspended RRC connection is invalid.
10. MME 103b調用正常閒置模式RRC連接建立程序: 10. The MME 103b invokes the normal idle mode RRC connection setup procedure:
a. MME 103b發送傳呼請求至UE 101之當前已知追蹤區域位置內的eNB 102a,b...n。 a. The MME 103b sends a paging request to the eNBs 102a, b...n within the currently known tracking area location of the UE 101.
b. eNB 102a,b...n在接收傳呼請求時在處於其控制下之小區內發送傳呼訊息。傳呼訊息識別eNB 102a,b...n正試圖聯繫之UE 101。 b. The eNBs 102a, b...n transmit paging messages within the cell under their control upon receiving the paging request. The paging message identifies the UE 101 that the eNB 102a, b...n is attempting to contact.
c. UE 101回應於其當前所紮駐之小區中的傳呼。UE 101藉由起始正常RRC連接建立程序來以正常方式回應傳呼。 c. The UE 101 responds to the paging in the cell in which it is currently camped. The UE 101 responds to the paging in a normal manner by initiating a normal RRC connection setup procedure.
d. eNB-2 102b(結合MME 103b)建立與UE 101之新RRC連接且S1-U及S1-MME承載分別在eNB2 102b與SGW 103a及MME 103b之間設立 d. eNB-2 102b (in conjunction with MME 103b) establishes a new RRC connection with UE 101 and the S1-U and S1-MME bearers are established between eNB2 102b and SGW 103a and MME 103b, respectively.
11. 資料經由新建立之S1-U自SGW 103a傳送至eNB-2 102b(注意先前儲存及中止之S1-U可釋放) 11. The data is transmitted from the SGW 103a to the eNB-2 102b via the newly established S1-U (note that the previously stored and suspended S1-U can be released)
12. 使用者資料經由Uu自eNB-2 102b傳達至UE。 12. The user profile is communicated from the eNB-2 102b to the UE via Uu.
圖23展示表示UE 101與RAN 102之間的RRC連接之中止的可能處置之訊息序列圖。在此實例中,中止由UE 101請求且由網路接受。在此實例中,在步驟10中亦設想eNB 102a將連接資訊發送至其他 eNB(未圖示)之可能性。 23 shows a message sequence diagram showing possible handling of an RRC connection suspension between UE 101 and RAN 102. In this example, the abort is requested by the UE 101 and accepted by the network. In this example, it is also contemplated in step 10 that the eNB 102a sends the connection information to the other. The possibility of an eNB (not shown).
參看圖23,以下內容描述當中止請求由UE 101進行時發生之處理: Referring to Figure 23, the following describes the processing that occurs when the abort request is made by the UE 101:
1. 最初假定UE處於RRC_CONNECTED狀態,其中安全性經啟動。 1. Initially assume that the UE is in the RRC_CONNECTED state, where security is initiated.
2. UE偵測到符合RRC連接中止準則(例如,在較高層、NAS或AS(例如,RRC),基於來自使用者平面實體或應用程式實體之輸入或基於不活動計時器期滿) 2. The UE detects compliance with the RRC Connection Abort criteria (eg, at a higher layer, NAS or AS (eg, RRC), based on input from a user plane entity or application entity or based on an inactivity timer)
3. UE RRC將新提議之訊息RRC連接中止請求(可使用其他訊息名稱但訊息之意圖相同)發送至eNB。在替代實施例中,UE使用MAC CE(控制元素)發信號發送請求訊息。 3. The UE RRC sends the newly proposed message RRC Connection Abort Request (other message names can be used but the intent of the message is the same) to the eNB. In an alternate embodiment, the UE signals the request message using a MAC CE (Control Element).
4. 中止RRC連接對eNB為可接受的,此由以下情況判定: 4. The suspension of the RRC connection is acceptable to the eNB, which is determined by the following:
a. eNB獨立地維持符合之中止準則。此準則可基於諸如但不限於以下之態樣: a. The eNB independently maintains compliance with the suspension criteria. This criterion can be based on aspects such as, but not limited to, the following:
‧與每一UE有關及/或基於如由UE支援的每一無線電承載或應用程式之訊務特性的訊務活動及趨勢。 ‧ Communication activities and trends related to each UE and/or based on the traffic characteristics of each radio bearer or application supported by the UE.
‧關於器件、應用程式、UE處之應用程式之操作或其中的訊務類型、eNB、S-GW、MME或系統內之任何其他相關聯之實體的局部知識之又替代或額外使用。 • Alternative or additional use of the device, application, operation of the application at the UE or the type of traffic therein, eNB, S-GW, MME or any other associated entity within the system.
及/或 And/or
b. eNB自MME/S-GW請求(及接收)關於以下內容之一次性或週期性反饋: b. The eNB requests (and receives) one-time or periodic feedback from the MME/S-GW regarding:
i. 當用於UE之S1-U連接設立於S-GW與eNB之間時,eNB可自S-GW請求用於UE之週期性或基於臨限之訊務活動報告。S-GW隨後可週期性地或基於臨限向eNB提供報告。每一報告可用於特定UE或用於UE之群組,要求用於UE或UE之群組的報告。訊務活動報告可含有像 與每一UE或其他相關實體(諸如由UE支援之每一無線電承載或應用程式)有關的資料量及趨勢、作用中/非作用中時段統計及訊務預測之細節。 i. When the S1-U connection for the UE is established between the S-GW and the eNB, the eNB may request a periodic or threshold-based traffic activity report for the UE from the S-GW. The S-GW may then provide reports to the eNB periodically or based on the threshold. Each report can be used for a particular UE or group for a UE, requiring reporting for groups of UEs or UEs. The traffic activity report can contain images like Details of data volume and trend, active/inactive time period statistics, and traffic predictions associated with each UE or other related entity, such as each radio bearer or application supported by the UE.
ii. 或者S-GW可自主地以指定速率向eNB發送用於具有S1-U連接之每一UE的週期性或基於臨限之報告。 Ii. Or the S-GW may autonomously send a periodic or threshold-based report for each UE with an S1-U connection to the eNB at a specified rate.
iii.或者當符合用於UE之由eNB維持的準則時,eNB可自S-GW請求一次性訊務活動報告且在評估來自S-GW之報告之後作出中止決策。 Iii. Or when the criteria maintained by the eNB for the UE are met, the eNB may request a one-time traffic activity report from the S-GW and make a suspension decision after evaluating the report from the S-GW.
5. eNB準備源RAN至目標RAN容器,就像其將針對RAT內交遞所進行,以便建立RRC參數以儲存以用於UE RRC連接中止 5. The eNB prepares the source RAN to the target RAN container as if it would be done for intra-RAT handover in order to establish RRC parameters for storage for UE RRC connection abort
6. eNB視情況儲存附接有適當UE識別碼之此等容器,使得其可在需要時經擷取 6. The eNB stores such containers with appropriate UE identification codes as appropriate, so that they can be retrieved when needed
7. eNB視情況以在現有經由S1之交遞準備階段期間將執行之方式類似的方式將具有此額外UE識別碼(及或用於RRC連接中止之使用的指示)之所準備容器發送至MME[2]。此等可在新提議之顯式訊息「UE訊文中止請求」連同唯一地識別UE之eNB及MME UE識別碼發送。 7. The eNB sends the prepared container with this additional UE ID (and or the indication for the use of the RRC Connection Abort) to the MME, as appropriate, in a manner similar to that that would be performed during the handover preparation phase via S1. [2]. These may be sent in the newly proposed explicit message "UE Message Abort Request" along with the eNB and MME UE ID that uniquely identifies the UE.
a. eNB可替代地使用用於交遞準備的具有特別資訊元素(IE)之現有S1訊息中之一者以指示訊息之目的為用於UE RRC連接中止 a. The eNB may alternatively use one of the existing S1 messages with special information elements (IEs) for handover preparation to indicate that the purpose of the message is for the UE RRC connection suspension.
8. MME儲存容器連同所附接UE識別碼。MME刪除S-GW處之使用者平面工作階段或中止使用者平面工作階段。S-GW相應地應答MME 8. The MME storage container along with the attached UE identification code. The MME deletes the user plane work phase at the S-GW or suspends the user plane work phase. S-GW responds to MME accordingly
9. MME向eNB應答UE訊文中止 9. The MME responds to the eNB by aborting the UE message.
10. eNB視情況經由X2介面藉由UE訊文資訊準備附近之其他eNB或追蹤區域中的所有eNB。此類似於針對X2交遞準備在[3]中定義之現有程序。或者,(例如)藉由額外地包括UE識別碼或展示容器用於 UE中止之指示符,可定義新X2訊息或可修改用於交遞之現有訊息以用於中止目的。 10. The eNB optionally prepares all eNBs in the vicinity or all eNBs in the tracking area via the X2 interface via the X2 interface. This is similar to the existing procedure defined in [3] for X2 handover. Or, for example, by additionally including a UE identification code or display container for The UE abort indicator may define a new X2 message or may modify an existing message for handoff for aborting purposes.
此步驟使得若UE移動至相鄰eNB之涵蓋區域中,則能夠準備相鄰eNB以用於UE RRC訊文之快速重新建立。在此準備階段期間,提議eNB亦應具備中止有效性最大計時器(在章節6.1.6中所提議),使得其可在計時器期滿時刪除所儲存UE訊文。 This step enables the neighboring eNB to be prepared for fast re-establishment of the UE RRC message if the UE moves into the coverage area of the neighboring eNB. During this preparation phase, the proposed eNB should also have a Stop Validity Maximum Timer (proposed in Section 6.1.6) so that it can delete the stored UE message when the timer expires.
11. eNB將新提議之「RRC連接中止」訊息發送至UE且在自UE接收較低層L2 RLC應答之後釋放UE RRC無線電資源。 11. The eNB sends the newly proposed "RRC Connection Abort" message to the UE and releases the UE RRC radio resource after receiving the lower layer L2 RLC Answer from the UE.
12. UE接收連接中止訊息且將相同AS組態備份並儲存為包括安全性組態之eNB且釋放RRC連接狀態資源及實體。UE將其本身視為處於RRC_SUSPENDED狀態且就像在RRC_IDLE中一樣組態其RRC協定(但具有所儲存RRC訊文)並遵循包括監視傳呼出現時刻及使用基於UE之行動性程序的RRC_IDLE程序。在此提議之修改實施例中,由RRC_SUSPENDED中之UE使用的傳呼循環可不同於RRC_IDLE之傳呼循環。此可(例如)藉由使用較短傳呼出現時刻來確保UE較早偵測到指示使用者平面資料之傳呼,此係為了符合用於此等封包之遞送潛時的應用QoS。 12. The UE receives the connection abort message and backs up and stores the same AS configuration as an eNB including the security configuration and releases the RRC connection state resource and entity. The UE considers itself to be in the RRC_SUSPENDED state and configures its RRC protocol (but with the stored RRC message) as in RRC_IDLE and follows the RRC_IDLE procedure including monitoring the appearance of the paging and using the UE-based mobility procedure. In the modified embodiment proposed herein, the paging cycle used by the UE in RRC_SUSPENDED may be different from the paging cycle of RRC_IDLE. This can be ensured, for example, by using a shorter paging appearance time to ensure that the UE detects the paging of the user plane data earlier, in order to comply with the application QoS for the delivery latency of such packets.
13. 在一替代實施例中,UE將在UE能力訊息(3GPP TS 36.331中描述此訊息)中傳輸旗標,該旗標指示在eNB選擇不中止RRC連接的狀況下UE偏好RRC連接經釋放。若此情形對eNB可接受,則UE接著可遵循RRC連接釋放程序(參考TS 36.331之章節5.3.8)而非藉由RRC連接中止程序中止RRC連接或留下UE具有其RRC訊文中之一些或全部而表現為就像在RRC閒置中或者就像不在RRC連接中。 13. In an alternative embodiment, the UE will transmit a flag in the UE Capability Message (described in 3GPP TS 36.331) indicating that the UE prefers the RRC connection to be released in the event that the eNB chooses not to suspend the RRC connection. If this situation is acceptable to the eNB, the UE may then follow the RRC Connection Release procedure (refer to Section 3.3.8 of TS 36.331) instead of suspending the RRC connection by the RRC Connection Abort procedure or leaving the UE with some of its RRC messages or All behave as if it were in RRC idle or as if it were not in the RRC connection.
圖24展示表示UE 101與RAN 102之間的RRC連接之由UE 101進行之中止請求的可能處置之訊息序列圖。在此實例中,中止不由網路接 受且網路決定將UE保持於連接模式中。 24 shows a message sequence diagram showing possible handling of an RRC connection between UE 101 and RAN 102 for a suspension request by UE 101. In this example, the suspension is not connected by the network. The network decides to keep the UE in connected mode.
參看圖24,以下內容描述當中止請求由UE 101進行時發生之處理。 Referring to Fig. 24, the following describes the processing that occurs when the suspension request is made by the UE 101.
1. 最初假定UE處於RRC_CONNECTED狀態,其中安全性經啟動。 1. Initially assume that the UE is in the RRC_CONNECTED state, where security is initiated.
2. UE偵測到符合RRC連接中止準則(例如,在較高層、NAS或AS(例如,RRC),基於來自使用者平面實體及應用程式實體之輸入或基於不活動計時器期滿) 2. The UE detects compliance with the RRC Connection Abort criteria (eg, at a higher layer, NAS or AS (eg, RRC), based on input from the user plane entity and application entity or based on an inactivity timer)
3. UE RRC將新提議之訊息RRC連接中止請求(可使用其他訊息名稱但訊息之意圖相同)發送至eNB。在替代實施例中,UE使用MACCE(控制元素)發信號發送請求訊息。 3. The UE RRC sends the newly proposed message RRC Connection Abort Request (other message names can be used but the intent of the message is the same) to the eNB. In an alternate embodiment, the UE signals the request message using a MAC CE (Control Element).
4. eNB不接受中止RRC連接。此可因為以下理由中之一或多者而得出:a. eNB獨立地維持未符合之中止準則(如在章節6.1.1中針對步驟4a而描述);及b. eNB自MME/S-GW請求(及接收)一次性或週期性訊務報告反饋。 4. The eNB does not accept the suspension of the RRC connection. This may be due to one or more of the following reasons: a. The eNB independently maintains non-compliance with the suspension criteria (as described for step 4a in Section 6.1.1); and b. eNB from MME/S- The GW requests (and receives) one-time or periodic traffic report feedback.
5. eNB發送RRC連接中止拒絕訊息 5. The eNB sends an RRC connection abort reject message.
a. 視情況,eNB可向UE指示後退或禁止計時器,使得當計時器在運行時UE不應再嘗試中止請求 a. Depending on the situation, the eNB may indicate to the UE a back or disable timer such that the UE should not attempt to abort the request while the timer is running.
b. 在替代實施例中,eNB不發送回應訊息至UE,在該狀況下UE可具有硬編碼後退或禁止計時器,該計時器在運行時防止RRC連接中止請求之進一步傳輸 b. In an alternative embodiment, the eNB does not send a response message to the UE, in which case the UE may have a hard coded fallback or disable timer that prevents further transmission of the RRC Connection Abort request during runtime
6. UE繼續保持於RRC_CONNECTED狀態 6. The UE continues to remain in the RRC_CONNECTED state.
圖25展示表示UE 101與RAN 102之間的RRC連接之由UE 101進行 之中止請求的可能處置之訊息序列圖。在此實例中,中止不由網路接受且網路決定將UE轉變為閒置模式。 25 shows that the RRC connection between the UE 101 and the RAN 102 is performed by the UE 101. Sequence diagram of the message of possible disposition of the abort request. In this example, the suspension is not accepted by the network and the network decides to transition the UE to idle mode.
參看圖25,以下內容描述當中止請求由UE 101進行時發生之處理。 Referring to Fig. 25, the following describes the processing that occurs when the suspension request is made by the UE 101.
1. 最初假定UE處於RRC_CONNECTED狀態,其中安全性經啟動。 1. Initially assume that the UE is in the RRC_CONNECTED state, where security is initiated.
2. UE偵測到符合RRC連接中止準則(例如,在較高層、NAS或AS(例如,RRC),基於來自使用者平面實體及應用程式實體之輸入或基於不活動計時器期滿) 2. The UE detects compliance with the RRC Connection Abort criteria (eg, at a higher layer, NAS or AS (eg, RRC), based on input from the user plane entity and application entity or based on an inactivity timer)
3. UE RRC將新提議之訊息RRC連接中止請求發送至eNB。在替代實施例中,UE使用MAC CE(控制元素)發信號發送請求訊息。 3. The UE RRC sends a newly proposed message RRC Connection Abort Request to the eNB. In an alternate embodiment, the UE signals the request message using a MAC CE (Control Element).
4. eNB不接受中止RRC連接且替代地eNB選擇釋放RRC連接,此可因為以下理由中之一或多者而得出:a. eNB獨立地維持符合之釋放準則;b. eNB自MME/S-GW請求且獲得一次性或週期性訊務報告反饋;c. eNB判定其不想要UE轉至RRC_SUSPENDED,此(例如)歸因於即將來臨之DL使用者平面資料傳輸或藉由內部無線電資源管理(RRM)策略;及d. eNB不支援功能性且當自UE接收到不可理解之訊息時具有釋放RRC連接之策略。 4. The eNB does not accept the suspension of the RRC connection and instead the eNB chooses to release the RRC connection, which may result from one or more of the following reasons: a. the eNB independently maintains the compliance release criteria; b. the eNB from the MME/S - GW requests and obtains one-time or periodic traffic report feedback; c. The eNB determines that it does not want the UE to go to RRC_SUSPENDED, for example due to upcoming DL user plane data transmission or by internal radio resource management (RRM) policy; and d. The eNB does not support functionality and has a policy of releasing the RRC connection when receiving an incomprehensible message from the UE.
5. eNB發送RRC連接釋放訊息 5. The eNB sends an RRC connection release message.
6. UE接收該訊息且離開RRC_CONNECTED狀態從而移動至RRC_IDLE狀態。 6. The UE receives the message and leaves the RRC_CONNECTED state to move to the RRC_IDLE state.
圖26展示表示UE 101與RAN 102之間的RRC連接之由eNB 102a進 行之中止請求的可能處置之訊息序列圖。在此實例中,UE 101同意中止連接。 Figure 26 shows an RRC connection between the UE 101 and the RAN 102. A sequence of messages that may be dispositioned for a pending request. In this example, UE 101 agrees to abort the connection.
參看圖26,以下內容描述當中止請求由UE 101進行時發生之處理。 Referring to Fig. 26, the following describes the processing that occurs when the suspension request is made by the UE 101.
1. 最初假定UE處於RRC_CONNECTED狀態,其中安全性經啟動。 1. Initially assume that the UE is in the RRC_CONNECTED state, where security is initiated.
2. eNB偵測到符合RRC連接中止準則,此可(例如)因為以下理由而得出:a. eNB獨立地維持符合之中止準則及/或b. eNB自MME/S-GW請求(及接收)一次性或週期性反饋 2. The eNB detects compliance with the RRC Connection Abort criteria, which may be, for example, for the following reasons: a. The eNB independently maintains compliance with the suspension criteria and/or b. The eNB requests from the MME/S-GW (and receives ) one-time or periodic feedback
3. eNB準備源RAN至目標RAN容器,如其將針對RAT內交遞所進行 3. The eNB prepares the source RAN to the target RAN container as it would be for intra-RAT handover
4. eNB將視情況儲存附接有適當UE識別碼之此等容器,使得其可在需要時經擷取 4. The eNB will store such containers with appropriate UE IDs as appropriate so that they can be retrieved when needed
5. eNB視情況以與在現有經由S1之交遞準備階段期間將執行之方式類似的方式將所準備容器發送至MME。此等可在新提議之顯式訊息「UE訊文中止請求」連同唯一地識別UE之eNB及MME UE識別碼發送。 5. The eNB optionally sends the prepared container to the MME in a manner similar to that that would be performed during the handover preparation phase via S1. These may be sent in the newly proposed explicit message "UE Message Abort Request" along with the eNB and MME UE ID that uniquely identifies the UE.
a. eNB可替代地使用用於交遞準備的具有特別IE之現有S1訊息中之一者以指示目的為用於UE RRC連接中止 a. The eNB may alternatively use one of the existing S1 messages with special IE for handover preparation to indicate that the purpose is for the UE RRC connection suspension.
6. MME儲存容器連同所附接UE識別碼。MME刪除S-GW處之使用者平面工作階段或中止使用者平面工作階段。S-GW相應地發送應答至MME 6. The MME storage container is attached with the UE ID. The MME deletes the user plane work phase at the S-GW or suspends the user plane work phase. The S-GW sends a response to the MME accordingly.
7. MME向eNB應答UE訊文中止 7. The MME responds to the eNB by aborting the UE message.
8. eNB 102a視情況經由X2介面藉由UE訊文資訊準備附近之其他eNB或追蹤區域中的所有eNB。此類似於用於X2交遞準備之現有程 序。或者,可定義新X2訊息或可修改用於交遞序列之現有訊息以用於中止目的。在此準備階段期間,提議eNB亦應具備中止有效性最大計時器(在章節6.1.6中所提議),使得其可在計時器期滿時刪除所儲存UE訊文。 8. The eNB 102a optionally prepares all eNBs in the vicinity or all eNBs in the tracking area via the X2 interface via the X2 interface. This is similar to the existing process for X2 handover preparation. sequence. Alternatively, a new X2 message may be defined or an existing message for the delivery sequence may be modified for aborting purposes. During this preparation phase, the proposed eNB should also have a Stop Validity Maximum Timer (proposed in Section 6.1.6) so that it can delete the stored UE message when the timer expires.
9. eNB將新提議之「RRC連接中止」訊息發送至UE且在自UE接收較低層L2 RLC應答之後自連接狀態釋放UE訊文。 9. The eNB sends the newly proposed "RRC Connection Abort" message to the UE and releases the UE message from the connected state after receiving the lower layer L2 RLC response from the UE.
10. UE接收RRC連接中止訊息且基於其內部準則檢查樂於中止RRC連接。UE將相同AS組態備份並儲存為包括安全性組態之eNB且釋放RRC連接狀態資源及實體。UE將其本身視為處於RRC_SUSPENDED狀態且就像在RRC_IDLE中一樣組態其RRC協定(但具有所儲存RRC訊文)並遵循包括監視傳呼出現時刻及使用基於UE之行動性程序的RRC_IDLE程序。 10. The UE receives the RRC Connection Abort message and checks that it is willing to suspend the RRC connection based on its internal criteria. The UE backs up and stores the same AS configuration as an eNB including the security configuration and releases the RRC connection state resources and entities. The UE considers itself to be in the RRC_SUSPENDED state and configures its RRC protocol (but with the stored RRC message) as in RRC_IDLE and follows the RRC_IDLE procedure including monitoring the appearance of the paging and using the UE-based mobility procedure.
‧在此提議之修改實施例中,由RRC_SUSPENDED中之UE使用的傳呼循環可不同於RRC_IDLE之傳呼循環。此可(例如)藉由使用較短傳呼出現時刻來確保UE較早偵測到指示使用者平面資料之傳呼,以便符合用於此等封包之遞送潛時的應用QoS。 In the modified embodiment proposed herein, the paging cycle used by the UE in RRC_SUSPENDED may be different from the paging cycle of RRC_IDLE. This can, for example, ensure that the UE detects the paging of the user plane data earlier by using the shorter paging appearance time in order to comply with the application QoS for the delivery latency of such packets.
11. 在此提議之替代實施例中,設想一情形,其中在eNB起始之RRC連接中止的狀況下UE偏好RRC連接釋放。提議UE將在UE能力中傳輸旗標,該旗標指示若在網路側符合中止準則,UE偏好RRC連接經中止抑或釋放。eNB接著將相應地中止/釋放RRC連接。 11. In an alternative embodiment proposed herein, a scenario is envisioned in which the UE prefers RRC Connection Release in the event that the RRC connection initiated by the eNB is aborted. It is proposed that the UE will transmit a flag in the UE capability, which indicates that if the network side complies with the suspension criterion, the UE prefers the RRC connection to be suspended or released. The eNB will then suspend/release the RRC connection accordingly.
情形7之一可能替代情形將為當自eNB接收RRC連接中止訊息時,UE不想要遵守eNB信號且替代地決定釋放現有RRC連接且轉至RRC_IDLE。此需要UE與eNB之間的呈隨後之「RRC連接釋放請求」或「RRC連接釋放指示」之形式的額外發信號。或者,UE可發送具有額外指示符之RRC連接中止確認訊息以指示至RRC_IDLE之轉變及 RRC連接之釋放。替代實施例將為UE在UE能力訊息中傳輸旗標,該旗標指示若在網路側符合中止準則,UE偏好RRC連接經中止或釋放。eNB接著將相應地中止/釋放連接(如圖26中所展示)。 One of the possible alternatives for Case 7 would be that when receiving an RRC Connection Abort message from the eNB, the UE does not want to comply with the eNB signal and instead decides to release the existing RRC connection and go to RRC_IDLE. This requires additional signaling between the UE and the eNB in the form of a subsequent "RRC Connection Release Request" or "RRC Connection Release Indication". Alternatively, the UE may send an RRC Connection Abort Confirmation message with an additional indicator to indicate a transition to RRC_IDLE and Release of the RRC connection. An alternate embodiment would transmit a flag for the UE in the UE Capability message indicating that the UE prefers the RRC connection to be aborted or released if the network side complies with the suspension criteria. The eNB will then suspend/release the connection accordingly (as shown in Figure 26).
自eNB接收RRC連接中止訊息之進一步替代方案為UE判定其想要停留於RRC連接中。對網路起始之RRC連接中止之此基於UE的回應視為可能的,但並不遵守網路定向之控制的通常應用之系統原則(亦即,替代程序替代地允許UE本身判定RRC狀態決策之最終結果)。 A further alternative to receiving an RRC Connection Abort message from the eNB is that the UE decides that it wants to stay in the RRC connection. This UE-based response to the network initiated RRC connection suspension is considered possible, but does not comply with the system principles of the usual application of network directed control (ie, the alternative procedure instead allows the UE itself to determine the RRC state decision). The final result).
儘管UE 101在RRC連接釋放請求訊息中以指示符指示其對於RRC連接之中止或釋放的偏好或作為UE能力訊息中之旗標或某一其他形式之指示符,但eNB 102a不必遵循此請求。eNB 102a可選擇忽略請求且替代地選擇另一動作。 Although the UE 101 indicates its preference for RRC connection suspension or release or as a flag in the UE capability message or some other form of indicator in the RRC Connection Release Request message, the eNB 102a does not have to follow this request. The eNB 102a may choose to ignore the request and alternatively select another action.
在一實施例中,提議MME充當用於RRC連接中止之錨,且所註冊追蹤區域(TA)或追蹤區域(TA)群組充當用於中止有效性之邊界。在有效性區域內,UE將會將其中止之RRC連接訊文視為有效的且UE或網路可起始重新啟動。然而,其他有效性區域可為可能的。此等其他有效性區域可在RRC連接中止之前或RRC連接中止之時間處由eNB或其他網路實體明確地組態,亦可需要額外發信號以告知UE關於有效性區域之參數(例如,小區群組全域識別碼)。 In an embodiment, the proposed MME acts as an anchor for RRC connection abort, and the registered Tracking Area (TA) or Tracking Area (TA) group acts as a boundary for aborting validity. Within the validity area, the UE will treat the suspended RRC connection message as valid and the UE or network may initiate a restart. However, other areas of validity may be possible. These other areas of validity may be explicitly configured by the eNB or other network entity before the RRC connection is aborted or at the time the RRC connection is aborted, or may be additionally signaled to inform the UE about the parameters of the validity area (eg, cell) Group global ID).
a. 與RRC連接中止繼續/回復/釋放有關之任何發信號可與無論如何將在TA邊界發生之追蹤區域更新發信號組合。可藉由修改TAU程序中涉及之現有訊息攜載額外發信號或可經由針對TAU目的建立之相同RRC連接背負額外新的或現有RRC訊息。 a. Any signaling related to the RRC Connection Suspension Resume/Response/Release can be combined with any tracking area update that occurs at the TA boundary anyway. Additional new or existing RRC messages may be carried by modifying existing messages involved in the TAU procedure to carry additional signaling or may be via the same RRC connection established for TAU purposes.
b. 現有規範中已定義TA之概念且因此在此時採用TA在有效性區域定義方面不需要額外規範。其他有效性邊界可導致在有效性區域邊 界處之空中發信號的某一增加。此除了無論如何將在TA邊界發生之必選TAU發信號。 b. The concept of TA has been defined in existing specifications and therefore TA is not required at this time to define additional areas of validity. Other validity boundaries can lead to areas of validity A certain increase in the signalling of the air in the boundary. This is in addition to signaling the mandatory TAU that occurs at the TA boundary anyway.
c. TAU程序涉及UE、eNB及MME且因此將有助於所有相關實體處之安全性組態及其他UE組態(例如,量測組態、專用組態)的再新,因此使得易於基於新組態而在TAU結束時繼續中止 c. The TAU procedure involves the UE, the eNB and the MME and will therefore facilitate the reconfiguration of the security configuration and other UE configurations (eg, measurement configuration, dedicated configuration) at all relevant entities, thus making it easy to base on New configuration and continue to abort at the end of TAU
i. 用於導出存取層完整性保護及加密之庫安全性係基於在UE及MME處導出且隨eNB而不同的Kenb。每次存在連接狀態小區改變時(歸因於交遞或重新建立或現如針對中止回復所提議),需要導出用於新eNB之密鑰。新密鑰將不僅取決於新eNB且亦取決於用於源eNB及網路鏈接計數器上之Kenb。因此UE不能僅藉由在中止之時間處再使用安全性訊文來回復任何eNB上之連接。替代地,安全性訊文必須在UE及網路實體中再新。因此安全性訊文之再新(若需要新連接建立則藉由新AS安全性訊文或若使用連接重新建立則藉由修改之AS安全性訊文)將允許以較低發信號負擔實現進一步連接回復。 i. Library security for deriving access layer integrity protection and encryption is based on Kenb derived at the UE and MME and varying from eNB. Each time there is a connection state cell change (due to handover or re-establishment or as proposed for the abort reply), the key for the new eNB needs to be derived. The new key will depend not only on the new eNB but also on the source eNB and the Kenb on the network link counter. Therefore, the UE cannot reply to the connection on any eNB simply by reusing the security message at the time of suspension. Alternatively, the security message must be renewed in the UE and the network entity. Therefore, the re-newing of the security message (if the new connection is established, the new AS security message or the modified AS security message if the connection is re-established) will allow further implementation with a lower signaling burden. Connect to reply.
為了避免具有中止連接之UE過度迅速地請求重新啟動,亦提議具有可選抑制計時器(諸如「最小中止計時器」),一旦UE中止RRC連接,便應遵守該計時器。當計時器在運行時,防止UE起始中止之連接的重新啟動。此參數可由eNB藉由在系統廣播訊息中發送共同發信號而在UE專用發信號中基於每一UE或針對所有UE同時指定。或者此計時器應由eNB半靜態地(時常地)經由現有訊息或新RRC訊息內之新RRC資訊元素(IE)來組態,該計時器之值可取決於在中止之時間處在作用中之工作階段的QoS延遲要求。然而,UE不需要在所有情況下考慮此計時器,舉例而言,當起始緊急呼叫時可更動計時器。 In order to avoid having a UE with aborted connection requesting a restart too quickly, it is also proposed to have an optional suppression timer (such as a "minimum abort timer") that should be adhered to once the UE aborts the RRC connection. When the timer is running, it prevents the UE from initiating a restart of the aborted connection. This parameter may be specified by the eNB based on each UE or for all UEs in the UE-specific signaling by transmitting the co-signal in the system broadcast message. Or this timer should be configured by the eNB semi-statically (altime) via an existing message or a new RRC information element (IE) within the new RRC message, the value of which may be dependent on the time of the suspension. The QoS delay requirement for the working phase. However, the UE does not need to consider this timer in all cases, for example, the timer can be changed when an emergency call is initiated.
以類似方式,可指定可選最大計時器,其後中止之連接停止處於作用中。在此計時器期滿時,UE及/或eNB可刪除所儲存UE訊文資訊且認為中止之連接經釋放,且UE處於正常RRC閒置模式中。 In a similar manner, an optional maximum timer can be specified, after which the aborted connection stops being active. When the timer expires, the UE and/or the eNB may delete the stored UE message information and consider that the suspended connection is released, and the UE is in the normal RRC idle mode.
UE可在自UE傳送至網路之UE能力訊息中指示其對連接中止之支援,而網路將在廣播系統資訊中指示其對連接中止之支援。 The UE may indicate its support for connection suspension in the UE capability message transmitted from the UE to the network, and the network will indicate its support for connection suspension in the broadcast system information.
在UE起源及eNB起源之RRC中止程序的狀況下,MME可請求S-GW中止或刪除S-GW與伺服eNB之間的用於UE之S1-U。在此等狀況下,去往UE之下行鏈路訊務將在S-GW處緩衝,S-GW接著將必須請求MME傳呼UE。回應於傳呼,一旦UE聯繫到MME,其接著將必須創建或回復S-GW與現在伺服eNB之間的用於UE之S1-U工作階段。 In the case of the UE origination and the RRC suspension procedure of the eNB origin, the MME may request the S-GW to suspend or delete the S1-U for the UE between the S-GW and the Serving eNB. Under these conditions, the downlink traffic to the UE will be buffered at the S-GW, which will then have to request the MME to page the UE. In response to the paging, once the UE contacts the MME, it will then have to create or reply to the S1-U session for the UE between the S-GW and the current Serving eNB.
若MME負責傳呼UE,則其將可能需要在屬於UE之所註冊追蹤區域之所有小區中傳呼UE。此總體上可增加系統之傳呼負載。為了管理傳呼負載,存在對該領域之彼等專家而言為已知之若干方案,諸如:- 最短距離第一方案(MME首先在UE之最後已知eNB位置中傳呼,且若MME未自UE引出回應則將傳呼其他位置),- 依序傳呼(每次在eNB之不同子集中依序傳呼UE)。 If the MME is responsible for paging the UE, it will likely need to page the UE in all cells belonging to the registered tracking area of the UE. This generally increases the paging load of the system. In order to manage the paging load, there are several schemes known to the experts of the field, such as: - Shortest distance first scheme (MME first paging in the last known eNB location of the UE, and if the MME is not elicited from the UE The response will be paged to other locations), - paging in sequence (each time paging UEs in different subsets of the eNB).
此處提議管理系統之傳呼負載的兩種解決方案。 Two solutions for managing the paging load of the system are proposed here.
在第一解決方案中,MME儲存告知UE訊文中止之eNB的識別碼。如先前所提議,隨後將中止或刪除S1-U工作階段。若傳呼UE之需要出現,則MME可藉由使用所儲存eNB識別碼作為UE之最後已知位置來採取最短距離第一傳呼方案。若此自UE引出回應,則其將使MME免於在TA之所有小區中執行用於UE之毯式傳呼。 In the first solution, the MME stores an identification code of the eNB that informs the UE of the message suspension. As previously proposed, the S1-U session will then be aborted or deleted. If the need for paging the UE occurs, the MME may take the shortest distance first paging scheme by using the stored eNB identification code as the last known location of the UE. If this is a response from the UE, it will protect the MME from performing blanket paging for the UE in all cells of the TA.
在第二解決方案中,提議在RRC連接中止之時間處,MME應將S-GW與eNB之間的UE之S1-U工作階段保持於作用中。在此情形中,下行鏈路使用者資料到達RRC連接最初中止之eNB。當下行鏈路資料到達時,此eNB接著傳呼UE,因此減少系統傳呼負載。若eNB不接收用於傳呼之任何回應,則其接著可升級對MME之傳呼要求,MME接 著將跨越所有其他eNB傳呼UE。 In the second solution, it is proposed that the MME should keep the S1-U working phase of the UE between the S-GW and the eNB active at the time of the RRC connection suspension. In this case, the downlink user profile arrives at the eNB where the RRC connection was initially suspended. When the downlink data arrives, the eNB then pages the UE, thus reducing the system paging load. If the eNB does not receive any response for paging, it can then upgrade the paging request to the MME, and the MME receives The UE will be paged across all other eNBs.
在UE之RRC連接中止時,UE可執行行動性程序,就像其為閒置模式UE。對於有效性區域內之小區重新選擇,直至UE、eNB或MME希望回復(或重新啟動或重新建立)RRC連接時UE才可能需要執行任何額外發信號。 When the UE's RRC connection is aborted, the UE may perform an action procedure as if it were an idle mode UE. For cell reselection within the validity region, the UE may need to perform any additional signaling until the UE, eNB, or MME wishes to reply (or restart or re-establish) the RRC connection.
術語新MME及新eNB在本文中用以分別指示出於行動性目的或出於RRC連接重新啟動目的,具有中止之RRC訊文的UE起始發信號之MME及eNB。此等新MME及新eNB可與在RRC連接中止時伺服UE之MME或eNB相同或可為不同eNB及/或MME。 The terms new MME and new eNB are used herein to indicate the MME and eNB that the UE with the suspended RRC message initiates signaling for mobility purposes or for RRC connection restart purposes, respectively. These new MMEs and new eNBs may be the same as the MME or eNB of the serving UE when the RRC connection is suspended or may be different eNBs and/or MMEs.
若UE 101發現其本身在中止有效性區域邊界(例如,一或多個TA)外部,則UE應按照現有規範執行追蹤區域更新。圖27中描繪一代表性情形。以上序列之可能動作的細節如下: If the UE 101 finds itself outside the abort validity zone boundary (eg, one or more TAs), the UE should perform the tracking zone update in accordance with existing specifications. A representative situation is depicted in FIG. The details of the possible actions of the above sequence are as follows:
1. UE 101具有有效中止RRC連接(例如,UE定位於RRC連接中止發生之TA中)且遵循閒置狀態行動性程序。 1. The UE 101 has an active suspension of the RRC connection (eg, the UE is located in the TA where the RRC connection is aborted) and follows the idle state mobility procedure.
2. 歸因於其行動性,UE偵測到其在需要執行TAU程序的小區上。UE亦偵測到中止之RRC連接不再有效且因此區域地使所儲存RRC訊文無效。 2. Due to its mobility, the UE detects that it is on the cell where the TAU procedure needs to be performed. The UE also detects that the suspended RRC connection is no longer valid and therefore invalidates the stored RRC message regionally.
3. UE 101藉由原因行動起源(MO)發信號來發送RRC連接請求 3. The UE 101 sends an RRC Connection Request by signaling the origin of the action (MO).
4. eNB 102b發送RRC連接設立以便建立發信號無線電承載(SRB1) 4. The eNB 102b sends an RRC Connection Setup to establish a Signaled Radio Bearer (SRB1)
5. UE 101發送RRC連接設立完成訊息,該訊息內含有初始NAS訊息。在此狀況下,初始NAS訊息將為TAU請求。 5. The UE 101 sends an RRC Connection Setup Complete message containing the initial NAS message. In this case, the initial NAS message will be a TAU request.
a. 視情況,亦可包括諸如指示UE先前具有中止連接之「RRC連接中止狀態」的旗標。此旗標可添加作為RRC發信號(例如,RRC連接設立完成)之部分或作為NAS發信號(例如,TAU)之部分。 a. Depending on the situation, a flag such as "RRC Connection Abort Status" indicating that the UE previously had aborted connection may also be included. This flag may be added as part of the RRC signaling (eg, RRC Connection Setup Complete) or as part of the NAS signaling (eg, TAU).
b. 視情況,連同或替代於IE「RRC連接中止狀態」,UE可包括諸如指示在TAU之後需要保持中止之「RRC中止繼續」的另一旗標。eNB可相應地起始中止程序。 b. Depending on the situation, in conjunction with or instead of the IE "RRC Connection Abort Status", the UE may include another flag such as "RRC Suspension Continue" indicating that it is necessary to remain suspended after the TAU. The eNB may initiate the abort procedure accordingly.
6. eNB 102b將TAU請求且視情況將「RRC連接中止狀態」轉遞至新MME 103d。 6. The eNB 102b forwards the "RRC Connection Abort Status" to the new MME 103d as requested by the TAU.
a. 若新eNB 102b希望自舊MME 103a擷取中止之RRC組態,則新eNB 102b將包括中止狀態。此中止之RRC組態可幫助新eNB藉由僅向UE傳輸差異組態來最小化空中(OTA)發信號。 a. If the new eNB 102b wishes to retrieve the suspended RRC configuration from the old MME 103a, the new eNB 102b will include the abort state. This aborted RRC configuration can help the new eNB minimize over-the-air (OTA) signaling by transmitting only the differential configuration to the UE.
b. 若新eNB 102b希望向UE提供與先前中止之組態無關之完全新的RRC組態,則新eNB 102b將不包括中止狀態。 b. If the new eNB 102b wishes to provide the UE with a completely new RRC configuration that is unrelated to the previously suspended configuration, the new eNB 102b will not include the abort state.
7. 如正常TAU之狀況,新MME 103d使用UE訊文請求訊息自舊MME 103b擷取UE訊文。 7. In the normal TAU condition, the new MME 103d retrieves the UE message from the old MME 103b using the UE message request message.
a. 若自UE接收到,則新eNB 102b可發送對應「RRC連接中止狀態」旗標,該旗標將視情況在自新MME 103d發送至舊MME 103b時添加至此UE訊文請求。 a. If received from the UE, the new eNB 102b may send a corresponding "RRC Connection Abort Status" flag, which will be added to the UE message request as the case may be sent from the new MME 103d to the old MME 103b.
8. 舊MME擷取如由新MME請求之UE訊文。若「RRC連接中止狀態」旗標指示先前中止之RRC連接,則舊MME亦將擷取可用於此UE之所儲存容器。在保護計時器期滿之後或在來自HSS之UE位置已改變的確認時,舊MME 103b將向舊S-GW(未圖示)指示刪除UE 101之S1-U工作階段。在來自舊S-GW之刪除確認時,將刪除舊MME 103b處之UE訊文。 8. The old MME retrieves the UE message as requested by the new MME. If the "RRC Connection Abort Status" flag indicates a previously suspended RRC connection, the old MME will also retrieve the stored containers available to the UE. The old MME 103b will indicate to the old S-GW (not shown) that the S1-U session of the UE 101 was deleted after the expiration of the protection timer or when the acknowledgment from the location of the UE from the HSS has changed. At the time of the deletion confirmation from the old S-GW, the UE message at the old MME 103b will be deleted.
9. 舊MME 103b提供中止之UE訊文且視情況提供容器至新MME 103d以作為「UE訊文回應」之部分 9. The old MME 103b provides the aborted UE message and provides the container to the new MME 103d as part of the "UE message response" as appropriate.
a. 必須擴展現有「UE訊文回應」訊息(如在TAU期間所使用)以適應與先前中止之RRC連接有關的新提議之可選容器。 a. The existing "UE Message Response" message (as used during TAU) must be extended to accommodate the optional container for the new proposal related to the previously suspended RRC connection.
10. 新MME視情況執行NAS層級認證及安全性程序。 10. The new MME performs NAS level authentication and security procedures as appropriate.
11. 新eNB 102b使用「創建工作階段請求」訊息創建與新S-GW 103c之UE工作階段。若S-GW不存在改變,則將替代地修改現有工作階段。 11. The new eNB 102b uses the Create Session Request message to create a UE session with the new S-GW 103c. If there is no change in the S-GW, the existing work phase will be modified instead.
12. 新S-GW 103c應答工作階段創建 12. New S-GW 103c response session creation
13. 新MME 103d向新eNB 102b提供TAU接受以及自舊MME接收之新提議之可選容器。MME亦提供導出用於AS安全性程序之密鑰所需要的安全性組態。承載設立請求亦可視情況由新MME發出至新eNB,從而需要新eNB設立用於UE之使用者平面資料承載。 13. The new MME 103d provides the new eNB 102b with an optional container for TAU acceptance and new offer received from the old MME. The MME also provides the security configuration required to derive the keys for the AS security program. The bearer setup request may also be sent by the new MME to the new eNB as needed, so that the new eNB needs to set up the user plane data bearer for the UE.
14. 新eNB藉由UE執行AS安全性啟動程序 14. The new eNB performs the AS security initiation procedure by the UE.
15. eNB視情況解碼含有中止組態之容器且將推論需要發出至UE之新差分重組態 15. The eNB decodes the container containing the aborted configuration as appropriate and will infer the need for new differential reconfiguration to the UE.
a. 視情況eNB可忽略中止組態且可獨立地導出需要發出至UE之全新組態。 a. Depending on the situation, the eNB can ignore the abort configuration and can independently derive a new configuration that needs to be sent to the UE.
16. eNB將含有量測組態及專用無線電資源組態之RRC重組態訊息發送至UE。TAU接受可背負至此訊息上 16. The eNB sends an RRC reconfiguration message containing the measurement configuration and the dedicated radio resource configuration to the UE. TAU accepts can be piggybacked on this message
a. 視情況eNB可區域地再新RRC組態且對SRB1本身執行剩餘TAU程序。 a. Depending on the situation, the eNB may re-configure the RRC regionally and perform the remaining TAU procedure on SRB1 itself.
b. 視情況eNB可將新提議之旗標包括於RRC重組態訊息中以指示所提供之組態為「全組態」抑或「差分組態」。因此,UE能夠理解其應刪除中止組態抑或再使用中止組態(連同差分更新)以導出新組態。 b. Optionally, the eNB may include the new proposed flag in the RRC Reconfiguration message to indicate whether the provided configuration is "Full Configuration" or "Differential Configuration". Therefore, the UE can understand whether it should delete the abort configuration or reuse the abort configuration (along with differential update) to derive the new configuration.
c. 視情況可在標準中指定關於來自eNB之所接收組態應視為全組態抑或差分組態的必選預設行為。 c. Optionally, the mandatory preset behavior for the received configuration from the eNB should be considered a full configuration or a differential configuration, as appropriate.
17. UE應用所接收組態且將RRC連接重組態完成訊息發送至eNB。 17. The UE applies the received configuration and sends an RRC Connection Reconfiguration Complete message to the eNB.
18. UE將TAU完成訊息發送至eNB,該TAU完成訊息經轉遞至新MME。 18. The UE sends a TAU Complete message to the eNB, and the TAU Complete message is forwarded to the new MME.
19. 此自點向前,可基於上文描述之中止程序再次中止RRC連接。舉例而言,eNB可基於上文步驟5中提供之「RRC中止繼續」旗標起始中止。 19. This self-pointing forward can suspend the RRC connection again based on the abort procedure described above. For example, the eNB may initiate abort based on the "RRC Abort Continuation" flag provided in step 5 above.
在有效性區域內之UE起始之RRC連接重新啟動(自主地或回應於用於下行鏈路資料之傳呼信號的接收)可藉由RRC連接重新建立發信號達成。當前針對E-UTRAN定義RRC重新建立發信號程序以用於在交遞錯誤或無線電鏈路錯誤(RLF)的狀況下迅速回復RRC連接且重新起動AS安全性。重新建立程序允許具有準備之UE RRC連接資料或RRC訊文(UE訊文由先前伺服eNB經由X2介面提供)的小區基於其先前組態之UE訊文回復UE中之發信號及專用無線電承載(SRB及DRB)。在回復之前,SRB、DRB、量測組態及安全性組態藉由新eNB之修改藉由重新建立程序亦為可能的。 The RRC connection restart initiated by the UE in the validity area (autonomously or in response to the reception of the paging signal for downlink data) may be achieved by re-establishing the signaling by the RRC connection. The RRC re-establishment signaling procedure is currently defined for E-UTRAN for promptly replying to the RRC connection and restarting AS security in the event of a handover error or radio link error (RLF). The re-establishment procedure allows a cell with a prepared UE RRC connection profile or RRC message (the UE message is provided by the previous serving eNB via the X2 interface) to reply to the signalling in the UE and the dedicated radio bearer based on its previously configured UE message ( SRB and DRB). Prior to the reply, SRB, DRB, measurement configuration and security configuration were also possible by re-establishing the program by modification of the new eNB.
因為RRC連接重新建立程序不涉及經由空中之NAS層級發信號及視情況安全性重新啟動發信號,所以就所需發信號而言,其比常規閒置至連接模式轉變輕得多。其他優點為其上之連接回復的eNB可使用各欄位之可選性且因此最小化重新建立程序期間之量測及無線電資源組態的空中發信號之大小。 Since the RRC connection re-establishment procedure does not involve signaling via the NAS level in the air and restarting the signal depending on the situation, it is much lighter than the conventional idle-to-connect mode transition in terms of the required signaling. Other advantages eNBs that reply to the connection on it can use the optionality of each field and thus minimize the size of the airborne signal during the re-establishment procedure and the radio resource configuration.
參看圖28,為了擴展用於RRC連接回復之此程序,需要進行以下增強。 Referring to Figure 28, in order to extend this procedure for RRC Connection Reply, the following enhancements are required.
1. 在RRC連接中止之時間處,伺服eNB 1. At the time of the RRC connection suspension, the Serving eNB
a. 儲存其在中止發生之時間處連同與UE相關聯之對應eNB及MME識別碼發送至MME的容器之全備份,或b. 儲存UE之eNB及MME識別碼,使中止狀態與eNB及MME識別碼相關聯且將實際容器連同UE之eNB及MME識別碼轉遞至MME。 a. storing a full backup of the container sent to the MME along with the corresponding eNB and MME identification code associated with the UE at the time of the suspension, or b. storing the eNB and MME identification code of the UE, so that the suspension state and the eNB and the MME The identification code is associated and the actual container is forwarded to the MME along with the eNB and MME identification code of the UE.
2. 伺服eNB可視情況藉由UE訊文及用於彼等eNB中之任一者上 之連接重新建立所需要的任何其他資訊來準備附近之一些eNB(如其針對X2交遞之狀況所進行)或可能在MME下(或在諸如追蹤區域(TA)之有效性區域內)之所有eNB。準備標有「中止指示符」旗標以向目標eNB指示準備實際上用於中止之RRC連接。 2. The Serving eNB may be used by the UE message and for any of its eNBs as appropriate. The connection re-establishes any other information needed to prepare for some eNBs in the vicinity (as it does for X2 handover) or possibly all eNBs under the MME (or within the validity area such as the Tracking Area (TA)) . The "abort indicator" flag is prepared to be marked to indicate to the target eNB that the RRC connection is actually ready for suspension.
3. 視情況,X2介面協定可增強使得基於「RRC連接重新建立請求」中提供之舊eNB憑證,新eNB將能夠識別且查詢舊eNB以獲得UE訊文。若可用,則舊eNB可以如在X2交遞準備期間使用之類似的方式向新eNB提供UE訊文。或者,舊eNB可能夠查詢MME以獲得UE訊文,如其在TAU期間使用UE識別碼及中止指示符所進行。新eNB可向舊eNB指示此用於中止之RRC連接。 3. Optionally, the X2 interface protocol may be enhanced such that the old eNB will be able to identify and query the old eNB to obtain the UE message based on the old eNB credentials provided in the "RRC Connection Re-establishment Request". If available, the old eNB may provide UE messages to the new eNB in a similar manner as used during X2 handover preparation. Alternatively, the old eNB may be able to query the MME to obtain the UE message as it was done during the TAU using the UE identity code and the abort indicator. The new eNB may indicate to the old eNB this RRC connection for suspension.
出於連接重新啟動之目的,重新建立程序序列中之可能動作的細節如下: The details of the possible actions in re-establishing the sequence of programs for the purpose of connection restart are as follows:
1. 最初UE認為其中止之RRC連接有效 1. Initially the UE considers that the terminated RRC connection is valid.
2. UE偵測到回復RRC連接之需要,此歸因於資料擱置上行鏈路傳輸之到達或歸因於自網路接收傳呼。 2. The UE detects the need to reply to the RRC connection due to the arrival of the data on hold uplink transmission or due to receiving a page from the network.
3. 在有效性區域內之當前紮駐小區上,UE發送具有指示重新啟動」之新原因或指示中止之RRC連接或訊文之重新啟動的新IE之RRC連接重新建立請求。按照常規重新建立請求訊息結構(3GPP TS 36.331),其可包括一些或所有細節。C-RNTI及源實體小區識別碼之細節應為與RRC連接最初中止之小區/eNB有關的細節。短MAC-I導出係按照一般程序(參考3GPP TS 36.331之章節5.3.7.4),然而使用與RRC連接最初中止之小區/eNB有關的參數。 3. On the current cell in the validity zone, the UE sends an RRC Connection Re-establishment request with a new IE indicating a new cause or a RRC connection or a restart of the message that is aborted. The request message structure (3GPP TS 36.331) is re-established as usual, which may include some or all of the details. The details of the C-RNTI and the source entity cell identification code shall be details relating to the cell/eNB in which the RRC connection was initially suspended. The short MAC-I derivation is in accordance with the general procedure (refer to section 5.3.7.4 of 3GPP TS 36.331), however the parameters relating to the cell/eNB in which the RRC connection was initially suspended are used.
4. 新eNB將重新建立原因偵測為「重新啟動」(或RRC連接重新建立請求訊息包括請求中止之RRC連接之重新啟動的新IE) 4. The new eNB will re-establish the cause detection as "restart" (or the RRC connection re-establishment request message includes a new IE that restarts the RRC connection requesting suspension)
a. 其使所儲存UE訊文可用(新eNB 102b可與連接最初中止之舊eNB相同或可為已由舊eNB 102a準備之eNB中之一者)或 b. 基於UE提供之源小區細節,新eNB 102b能夠經由X2介面使用新的或修改訊息自舊eNB 102a擷取中止之UE訊文。 a. it makes the stored UE message available (the new eNB 102b may be the same as the old eNB connected to the initial suspension or may be one of the eNBs already prepared by the old eNB 102a) or b. Based on the source cell details provided by the UE, the new eNB 102b can retrieve the aborted UE message from the old eNB 102a using the new or modified message via the X2 interface.
5. 舊eNB 102a使所儲存UE訊文可用或其能夠使用所儲存UE識別碼自MME 103b擷取此訊文(以與其針對S1交遞擷取UE訊文相同的方式)。 5. The old eNB 102a makes the stored UE message available or can retrieve the message from the MME 103b using the stored UE identification code (in the same manner as it did for the S1 handover to retrieve the UE message).
6. 舊eNB 102a向新eNB 102b提供UE訊文(具有含有中止之RRC訊文的AS組態及含有在新eNB上重新建立RRC連接之資訊的AS訊文之容器)。 6. The old eNB 102a provides the UE message (the container with the AS configuration containing the suspended RRC message and the AS message containing the information for reestablishing the RRC connection on the new eNB) to the new eNB 102b.
7. 新eNB 102b使用所接收資訊以使UE 101之安全性訊文有效且將RRC連接重新建立訊息發送至UE以用於SRB1回復及新安全性密鑰導出。 7. The new eNB 102b uses the received information to validate the security message of the UE 101 and sends an RRC Connection Re-establishment message to the UE for SRB1 replies and new security key derivation.
8. UE回復SRB1、導出新安全性密鑰且將RRC連接重新建立完成訊息發送至新eNB。 8. The UE replies to SRB1, derives a new security key, and sends an RRC Connection Reestablishment Complete message to the new eNB.
9. 新eNB 102b設立與MME 103b之UE工作階段從而遵循S1路徑切換,如其將在常規RRC連接重新建立的狀況下所進行。 9. The new eNB 102b sets up the UE phase of operation with the MME 103b to follow the S1 path switch, as it would be done under normal RRC connection re-establishment conditions.
a. 若較早刪除S1-U,則MME 103b又創建與S-GW 103a之用於UE之使用者平面工作階段或 a. If the S1-U is deleted earlier, the MME 103b again creates a user plane work phase for the UE with the S-GW 103a or
b. 若將S-GW與連接最初中止之舊eNB之間的S1-U保持作用中,則MME促進常規S1路徑切換 b. If the S1-GW between the S-GW and the old eNB that originally connected the connection is kept active, the MME promotes the regular S1 path switch.
c. 若在中止之時間處中止S1-U,則MME可促進S1路徑切換但具有對S-GW之額外重新啟動指示符 c. If S1-U is aborted at the time of suspension, the MME may facilitate S1 path switching but have an additional restart indicator for the S-GW
10. 新eNB設立SRB2及DRB組態及量測組態且將RRC連接重組態訊息發送至UE。 10. The new eNB sets up the SRB2 and DRB configuration and measurement configuration and sends an RRC Connection Reconfiguration message to the UE.
11. UE應用所接收組態,重新啟動SRB2及DRB,且將RRC連接重組態完成傳輸至eNB。此後,UE可如往常一樣進行任何使用者平面資料傳送。 11. The UE receives the received configuration, restarts SRB2 and DRB, and transmits the RRC connection reconfiguration to the eNB. Thereafter, the UE can perform any user plane data transfer as usual.
作為用於重新啟動中止之連接之重新建立程序的再使用之替代方案,可使用等效程序,但該等效程序使用不同訊息或訊息定義。舉例而言,新RACH訊息3及訊息4(見3GPP TS 36.331)可經定義以分別用於RRC連接重新啟動請求及RRC連接重新啟動之目的,且RRC連接重新啟動請求及RRC連接重新啟動可遵循與重新建立之原則相同的原則。 As an alternative to the reuse of the re-establishment procedure for restarting the aborted connection, an equivalent procedure can be used, but the equivalent procedure uses a different message or message definition. For example, the new RACH message 3 and message 4 (see 3GPP TS 36.331) may be defined for the purpose of RRC connection restart request and RRC connection restart, respectively, and the RRC connection restart request and the RRC connection restart may be followed. The same principles as the principle of re-establishment.
進一步替代選項可為亦在有效性區域內採取常規RRC連接建立程序,藉此在有效性區域改變狀況下遵循下文描述之重新啟動程序(實例情形12)。 A further alternative option may be to take a conventional RRC connection setup procedure also within the validity area, thereby following the restart procedure described below (example case 12) in the validity zone change condition.
圖29展示描述在連接重新啟動期間重新建立程序失效時之可能動作之細節的信息序列圖。圖29之步驟包括: Figure 29 shows a sequence of information depicting the details of possible actions when a re-establishment procedure fails during a connection restart. The steps of Figure 29 include:
1. 最初UE 101具有與在舊eNB 102a之控制下之小區相關聯的中止之RRC連接。 1. The initial UE 101 has an RRC connection with a suspension associated with a cell under the control of the old eNB 102a.
2. UE偵測到重新啟動RRC連接之需要,此歸因於資料擱置上行鏈路傳輸之到達或歸因於自網路接收傳呼。 2. The UE detects the need to restart the RRC connection due to the arrival of the data shelving uplink transmission or due to receiving a paging from the network.
3. UE 101紮駐於在新eNB 102b之控制下的小區上,該小區位於有效性區域內。UE朝向新eNB 102b發送具有指示「重新啟動」之新原因或指示中止之RRC連接或訊文之重新啟動的新IE之RRC連接重新建立請求。其可包括將包括於常規重新建立請求訊息結構內之細節的一些或全部。C-RNTI及源實體小區識別碼之細節應為與RRC連接最初中止之小區/eNB 102a有關的細節。短MAC-I導出按照一般程序。然而使用與RRC連接最初中止之小區/eNB 102a有關的參數。 3. The UE 101 is camped on a cell under the control of the new eNB 102b, which is located within the validity area. The UE transmits an RRC Connection Re-establishment Request to the new eNB 102b with a new IE indicating a new cause of "restart" or a new IE indicating the suspension of the RRC connection or message. It may include some or all of the details that will be included in the conventional re-establishment request message structure. The details of the C-RNTI and source entity cell identification code shall be details relating to the cell/eNB 102a to which the RRC connection was initially suspended. Short MAC-I export follows the general procedure. However, parameters related to the cell/eNB 102a that was initially suspended by the RRC connection are used.
4. 新eNB 102b不能解析UE識別碼來擷取所準備訊文或不能唯一地識別UE訊文必須經擷取自之源eNB。 4. The new eNB 102b cannot parse the UE identity code to retrieve the prepared message or cannot uniquely identify the source message that the UE message must be retrieved from.
5. 新eNB 102b拒絕重新建立請求。 5. The new eNB 102b rejects the re-establishment request.
6. UE 101針對SRB0應用預設組態同時保持中止之UE訊文的其餘者且起動RRC連接建立程序。 6. The UE 101 presets the configuration for the SRB0 application while maintaining the rest of the aborted UE message and starts the RRC connection setup procedure.
7. UE 101視情況傳輸將設立原因識別為回復之RRC連接請求訊息。 7. The UE 101 transmits an RRC Connection Request message identifying the reason for the reply as a case-by-case transmission.
8. 新eNB 102b設立用於UE之SRB1且將RRC連接設立訊息傳輸至UE。 8. The new eNB 102b sets up SRB1 for the UE and transmits an RRC Connection Setup message to the UE.
9. UE組態SRB1且傳輸包括初始NAS訊息(例如:服務請求)之RRC連接設立完成訊息。UE亦包括在RRC連接中止時分配之UE識別符及相關MME識別符。 9. The UE configures SRB1 and transmits an RRC Connection Setup Complete message including the initial NAS message (eg, service request). The UE also includes the UE identifier and associated MME identifier assigned when the RRC connection is aborted.
10. 新eNB 102b請求指定MME 103b設立用於UE之S1訊文。 10. The new eNB 102b requests the designated MME 103b to set up an S1 message for the UE.
11. 自訊文請求,MME 103b知道其具有關於用於此UE之中止之RRC訊文的所儲存容器且擷取該等容器。 11. From the message request, the MME 103b knows that it has stored containers for the RRC message for the UE to suspend and retrieves the containers.
12. MME 103b將S1路徑自連接最初中止之舊eNB 102a切換至新eNB 102b。 12. The MME 103b switches the S1 path from the old eNB 102a that was initially suspended to the new eNB 102b.
13. 若S1路徑切換不可能,則釋放與舊eNB 102a之S1連接且設立與新eNB 102b之S1連接。 13. If the S1 path switch is not possible, the S1 connection with the old eNB 102a is released and the S1 connection with the new eNB 102b is established.
14. MME 103b轉遞與中止之RRC連接有關的用於UE之安全性訊文及所儲存容器。 14. The MME 103b forwards the security message and the stored container for the UE related to the suspended RRC connection.
15. 新eNB 102b現可藉由比較UE處之已知當前組態與新eNB 102b需要之組態來導出需要發信號至UE之差量(delta)組態。或者,新eNB 102b亦可藉由設定「全組態」IE來指示UE丟棄中止組態且採用新組態。 15. The new eNB 102b can now derive a delta configuration that needs to be signaled to the UE by comparing the known current configuration at the UE with the configuration required by the new eNB 102b. Alternatively, the new eNB 102b may also instruct the UE to discard the abort configuration and adopt a new configuration by setting a "Full Configuration" IE.
16. 新eNB 102b將安全性模式命令傳輸至UE且將RRC連接重組態訊息傳輸至UE,此將導致UE處之SRB2及其他DRB的重新啟動。 16. The new eNB 102b transmits a security mode command to the UE and transmits an RRC Connection Reconfiguration message to the UE, which will result in a restart of the SRB2 and other DRBs at the UE.
在有效性區域邊界改變時重新啟動係基於上文在行動性程序中 概述之TAU程序。可在正常RRC連接建立方法之後建立用於執行TAU程序所需要的RRC連接。 The restart is based on the above in the action procedure when the validity area boundary changes. An overview of the TAU program. The RRC connection required to perform the TAU procedure can be established after the normal RRC connection setup method.
常規RRC連接建立程序之優點為此允許: The advantages of the conventional RRC connection setup procedure are:
a. 無論如何基於新MME之庫密鑰啟動NAS及AS安全性 a. In any case, start NAS and AS security based on the library key of the new MME.
b. 將承載映射及通道組態修改為適合用於新MME/新eNB b. Modify the bearer mapping and channel configuration to be suitable for the new MME/new eNB
c. 藉由適合用於新MME/新eNB之相鄰小區組態再新量測訊文 c. Configuring a new measurement message by configuring a neighboring cell suitable for the new MME/new eNB
因此在TAU程序期間重新啟動連接之此方法包含: So this method of restarting the connection during the TAU procedure includes:
a. 使中止之RRC連接無效及 a. invalidate the suspended RRC connection and
b. 經由TAU設立新RRC連接(具有全新組態或差分新組態) b. Establish a new RRC connection via TAU (with new configuration or differential new configuration)
c. 一旦正在進行之資料傳送及發信號視為完成,則按需要保持/中止/釋放新連接 c. Once the ongoing data transfer and signaling is deemed complete, maintain/suspend/release new connections as needed
上文描述此方法之細節以作為行動性程序的部分。 The details of this method are described above as part of an operational procedure.
然而,若新RRC連接之建立視為在TA邊界效率低(例如,當UE移動於TA之間時),可需要修改RRC連接重新建立程序以在SRB1重新啟動與SRB2/DRB重新啟動之間併入NAS發信號。此程序類似於上文情形11中描述之重新建立程序,除了在此狀況下,新eNB連接至與舊eNB連接至之MME不同的MME。因此,在初始重新建立期間,新eNB將經由X2界面(若可用)自舊eNB或經由新MME自舊MME擷取UE RRC訊文。在MME之間及eNB與MME之間將需要擷取此訊文之新發信號訊息。一旦重新建立程序之安全性啟動及SRB1重新啟動階段成功,規則TAU發信號便可經由回復之SRB1發生。TAU發信號可用以在TAU結束時以上文描述之相同的方式重新啟動/釋放/中止RRC連接。 However, if the establishment of a new RRC connection is considered to be inefficient at the TA boundary (eg, when the UE moves between TAs), the RRC Connection Re-establishment procedure may need to be modified to be between SRB1 restart and SRB2/DRB restart and Into the NAS to signal. This procedure is similar to the re-establishment procedure described in scenario 11 above, except that in this case the new eNB is connected to a different MME than the MME to which the old eNB is connected. Therefore, during the initial re-establishment, the new eNB will retrieve the UE RRC message from the old MME via the X2 interface (if available) or from the old MME via the new MME. A new signaling message for the message needs to be retrieved between the MMEs and between the eNB and the MME. Once the security of the re-establishment procedure is initiated and the SRB1 restart phase is successful, the rule TAU signal can occur via the reply SRB1. The TAU signal can be used to restart/release/suspend the RRC connection in the same manner as described above at the end of the TAU.
存在RRC中止概念之眾多可能實施例。在此情形中,描述一實施例,其中目標為最大化與現有系統程序及發信號訊息之相容性,且藉 此最小化將方案整合於3GPP LTE規範中所必要之規範工作。 There are many possible embodiments of the RRC suspension concept. In this case, an embodiment is described in which the goal is to maximize compatibility with existing system programs and signaling messages, and to borrow This minimization integrates the solution into the specification work necessary in the 3GPP LTE specification.
實施例係基於以下引導原則: The embodiment is based on the following guiding principles:
- 用於重新啟動中止之RRC訊文的程序主要基於用於RRC重新建立之現有程序(且其當前用於自無線電鏈路錯誤恢復) - The procedure for restarting the suspended RRC message is mainly based on the existing procedure for RRC re-establishment (and it is currently used for recovery from radio link errors)
- 在Uu中止期間不中止S1連接。此避免每次Uu連接中止或回復(亦即,自CN之觀點,UE保持於連接模式中)時對於無線電存取網路與核心網路之間的發信號之需要。 - The S1 connection is not aborted during Uu abort. This avoids the need for signaling between the radio access network and the core network each time the Uu connection is aborted or replied (i.e., from the CN perspective, the UE remains in the connected mode).
- 在UE中止時重新選擇另一小區之情況下,UE始終告知RAN。此避免在下行鏈路資料到達中止小區之eNB,但UE已移動至另一小區而未通知網路的情況下對於傳呼升級(經由其他eNB,或經由橫跨多個小區/eNB之廣泛區域)之需要。存在關於此小區位置通知之兩種可能變體: - In case of reselecting another cell when the UE is aborted, the UE always informs the RAN. This avoids that the downlink data arrives at the eNB of the abort cell, but the UE has moved to another cell without notifying the network for paging upgrade (via other eNBs, or via a wide area spanning multiple cells/eNBs) Need. There are two possible variants of this cell location notification:
○i)第一替代方案為使UE移動為閒置且在重新選擇之後經由新小區發送TAU。在接收TAU時,使MME意識到UE現閒置且可起始至舊小區之S1的釋放。若新資料到達UE超過此點,則將(在DL資料到達之狀況下,UE之網路傳呼之後)建立新RRC連接(及S1連接) o) The first alternative is to move the UE to idle and send the TAU via the new cell after reselection. Upon receiving the TAU, the MME is made aware that the UE is currently idle and can initiate the release of S1 to the old cell. If the new data arrives at the UE beyond this point, the new RRC connection (and S1 connection) will be established (after the DL data arrives, after the UE's network paging).
○ii)第二替代方案為使UE在重新選擇之後在新小區中發送重新建立請求。新小區之eNB接著可決定執行與在交遞期間使用之操作類似的操作,以便防止UE移動回至完全閒置模式。若新小區之eNB與舊小區之eNB相同,則UE訊文資訊可易於用於eNB內,因此eNB可藉由UE完成重新建立程序而不聯繫其他網路節點。若新小區之eNB不同於舊小區之eNB,則新eNB可試圖使用在RLF恢復之3GPP發行版本9中介紹之現有X2「轉遞交遞」程序(3GPP TS 36.423之「RLF指示訊息」)自舊eNB提取UE訊文且新eNB可藉由UE完成重新建立程序且可按照正常交遞程序向MME起始S1路徑切換請求。 ○ ii) A second alternative is to have the UE send a re-establishment request in the new cell after reselection. The eNB of the new cell may then decide to perform operations similar to those used during handover in order to prevent the UE from moving back to the fully idle mode. If the eNB of the new cell is the same as the eNB of the old cell, the UE message information can be easily used in the eNB, so the eNB can complete the re-establishment procedure by the UE without contacting other network nodes. If the eNB of the new cell is different from the eNB of the old cell, the new eNB may attempt to use the existing X2 "delivery handover" procedure ("RLF indication message" of 3GPP TS 36.423) introduced in 3GPP Release 9 of RLF recovery from the old The eNB extracts the UE message and the new eNB can complete the re-establishment procedure by the UE and can initiate the S1 path switch request to the MME according to the normal handover procedure.
- 若重新建立程序失效(當存取中止小區或新小區時),或若其由 網路拒絕,則UE按照現有程序採取基於NAS之RLF恢復,且因此返回至閒置且經由當前紮駐之小區發送TAU。此將導致新RRC連接之建立。 - if the re-establishment procedure fails (when accessing the abort cell or new cell), or if If the network refuses, the UE takes a NAS-based RLF recovery according to the existing procedure, and thus returns to idle and transmits the TAU via the currently camped cell. This will result in the establishment of a new RRC connection.
為了實施以上實施例,需要對規範之以下改變: In order to implement the above embodiments, the following changes to the specification are required:
1)可針對上行鏈路通信定義新「中止請求」訊息,藉此允許UE請求或起始RRC連接之中止。若中止僅為網路觸發的(無至決策之UE輸入),則不需要此訊息之定義。訊息可為新RRC訊息,或可包含對現有RRC訊息之修改。可替代地在MAC層(例如)在MAC控制元素(CE)內傳達訊息。 1) A new "Abort Request" message can be defined for uplink communications, thereby allowing the UE to request or initiate an RRC connection abort. If the abort is only triggered by the network (no UE input to the decision), the definition of this message is not required. The message may be a new RRC message or may include modifications to existing RRC messages. The message may alternatively be conveyed within the MAC layer (for example) within the MAC Control Element (CE).
2)可針對下行鏈路通信定義「中止命令」訊息以便允許網路命令UE目前RRC連接之中止。為了提供此功能性,可修改現有訊息(諸如RRC釋放,或RRC重組態),或可定義新訊息。可替代地在MAC層(例如)在MAC CE內傳達訊息。 2) An "Abort Command" message may be defined for downlink communications to allow the network to command the UE to terminate the current RRC connection. To provide this functionality, existing messages (such as RRC release, or RRC reconfiguration) can be modified, or new messages can be defined. Messages may alternatively be conveyed at the MAC layer, for example, within the MAC CE.
3)定義用於起始RRC重新建立之新觸發。當UE之RRC連接當前中止時,此等包括以下中之一或多者: 3) Define a new trigger for initiating RRC re-establishment. When the UE's RRC connection is currently aborted, this includes one or more of the following:
a. 自網路接收傳呼訊息(用於網路起源之DL資料) a. Receive paging messages from the network (DL data for network origin)
b. 新行動起源(UL)資料到達UE b. New Action Origin (UL) data arrives at the UE
c. 遵循至任何其他小區之UE之重新選擇 c. Follow the reselection of UEs to any other cell
圖30為展示用於由UE 101與EUTRAN 102之間的RRC連接重新建立遵循之RRC連接中止之以上步驟的概述之訊息序列圖。 30 is a message sequence diagram showing an overview of the above steps for RRC connection re-establishment followed by RRC connection re-establishment between the UE 101 and the EUTRAN 102.
1. 最初UE 101具有與EUTRAN 102之作用中(非中止)RRC連接。 1. Initially UE 101 has an active (non-suspended) RRC connection with EUTRAN 102.
2. 在UE 101或EUTRAN 102處產生指示較佳將中止RRC連接之觸發。此觸發可由中止準則或在UE或EUTRAN處符合之準則產生,如上文實例中所論述。 2. A trigger is generated at the UE 101 or EUTRAN 102 indicating that the RRC connection will preferably be aborted. This trigger may be generated by a suspension criterion or criteria met at the UE or EUTRAN, as discussed in the examples above.
3a. 若觸發在UE處產生,則UE發送連接中止請求訊息。在此實 例中,UE使用至EUTRAN之新訊息(例如,RRC連接中止請求訊息)。其他新的或現有3GPP訊息亦可用於此目的。若觸發在EUTRAN處產生,則連接中止請求訊息未由EU發送且省略此步驟。 3a. If the trigger is generated at the UE, the UE sends a connection abort request message. In this In the example, the UE uses a new message to the EUTRAN (eg, an RRC Connection Abort Request message). Other new or existing 3GPP messages can also be used for this purpose. If the trigger is generated at EUTRAN, the connection abort request message is not sent by the EU and this step is omitted.
3b. 在藉由EUTRAN接收RRC連接中止請求訊息時或若觸發在EUTRAN處產生,則EUTRAN向UE發送連接中止命令訊息。在此實例中,EUTRAN使用至UE之新訊息(例如,RRC連接中止命令訊息)。在另一實例中,EUTRAN可使用RRC連接重組態訊息之修改形式或RRC釋放訊息之修改形式以作為連接中止命令訊息。在此等狀況下,修改之RRC連接重組態訊息或修改之RRC釋放訊息將被修改,使得UE處之影響將使RRC連接經中止而非重組態或釋放。此修改可(例如)包括指示目的為中止RRC連接之新資訊元素(IE)。舉例而言,此新IE可標記為「中止RRC連接」、「中止命令(Suspend Command)」、「中止命令(Suspension Command)」、「中止指示符(Suspend Indicator)」、「中止指示符(Suspension Indicator)」或不同之某物。新IE可視情況存在於訊息中且IE在訊息中之存在可使UE中止RRC連接。或者,新IE可為布爾值且將IE設定為真可使UE中止RRC連接。其他新的或現有3GPP訊息亦可用於此目的。 3b. When receiving the RRC Connection Abort Request message by the EUTRAN or if the trigger is generated at the EUTRAN, the EUTRAN sends a Connection Abort message to the UE. In this example, the EUTRAN uses a new message to the UE (eg, an RRC Connection Abort Command message). In another example, the EUTRAN may use a modified form of the RRC Connection Reconfiguration message or a modified form of the RRC Release message as the connection abort command message. Under these conditions, the modified RRC Connection Reconfiguration message or the modified RRC Release message will be modified so that the impact at the UE will cause the RRC connection to be aborted rather than reconfigured or released. This modification may, for example, include a new information element (IE) indicating that the purpose is to suspend the RRC connection. For example, the new IE can be marked as "abort RRC connection", "suspend command", "suspension command", "suspend indicator", "suspension indicator" (Suspension) Indicator) or something different. The new IE may be present in the message and the presence of the IE in the message may cause the UE to suspend the RRC connection. Alternatively, the new IE may be a Boolean value and setting the IE to true may cause the UE to suspend the RRC connection. Other new or existing 3GPP messages can also be used for this purpose.
3c. 視情況,UE可接著將RRC(L3)應答或MAC(L2)應答發送至EUTRAN 3c. The UE may then send an RRC (L3) response or a MAC (L2) response to the EUTRAN, as appropriate
4. 接著藉由儲存於UE及/或EUTRAN處之至少安全性訊文來中止RRC連接。 4. The RRC connection is then aborted by at least the security message stored at the UE and/or EUTRAN.
5. 在已中止RRC連接之後,UE處之傳呼接收及行動性程序類似於當UE處於閒置模式時由UE採用之程序(UE監視下行鏈路信號是否有傳呼訊息且執行基於UE之行動性程序(例如,小區重新選擇))。 5. After the RRC connection has been aborted, the paging reception and mobility procedure at the UE is similar to the procedure used by the UE when the UE is in idle mode (the UE monitors whether the downlink signal has a paging message and performs a UE-based mobility procedure) (eg, cell reselection)).
6. 為了重新建立中止之RRC連接,自中止回復之觸發在UE或EUTRAN處產生。通常,觸發在UE處產生且可為以下中之一者:(i) 自EUTRAN接收用於UE之網路起源下行鏈路資料的傳呼信息;(ii)在UE處產生新行動起源上行鏈路資料;或(iii)遵循至另一小區之UE之重新選擇。如上文描述之其他觸發亦為可能的。 6. In order to re-establish the aborted RRC connection, the trigger for the abort reply is generated at the UE or EUTRAN. Typically, the trigger is generated at the UE and can be one of the following: (i) Receiving paging information for the network origin downlink data of the UE from the EUTRAN; (ii) generating new action originating uplink data at the UE; or (iii) following reselection of the UE to another cell. Other triggers as described above are also possible.
7. 在產生觸發時,UE發送連接重新建立請求訊息。在此實例中,UE向EUTRAN發送具有RRC中止指示之RRC連接重新建立請求訊息。RRC中止指示可含有於RRC連接重新建立請求訊息之重新建立原因欄位內。 7. When a trigger is generated, the UE sends a connection re-establishment request message. In this example, the UE sends an RRC Connection Re-establishment Request message with an RRC Abort indication to the EUTRAN. The RRC abort indication may be included in the re-establishment reason field of the RRC Connection Re-establishment Request message.
8. EUTRAN接著藉由連接重新建立命令訊息來回應。在此實例中,EUTRAN將RRC連接重新建立命令訊息發送至UE。 8. EUTRAN then responds by re-establishing the command message with the connection. In this example, the EUTRAN sends an RRC Connection Re-establishment command message to the UE.
9. 當已重新建立RRC連接時,UE發送連接重新建立完成訊息以確認已重新建立RRC連接。若RRC連接重新建立命令訊息用作連接重新建立命令訊息,則UE向EUTRAN發送RRC連接重新建立完成訊息。 9. When the RRC connection has been re-established, the UE sends a Connection Re-establishment Complete message to confirm that the RRC connection has been re-established. If the RRC Connection Re-establishment Command message is used as the Connection Re-establishment Command message, the UE transmits an RRC Connection Re-establishment Complete message to the EUTRAN.
視情況(且可能作為使用上文步驟8中所展示之RRC連接重新建立命令訊息之替代方案),EUTRAN亦可藉由RRC連接重組態訊息來回應。在一情形中,其中EUTRAN將使用RRC連接重組態訊息來代替RRC連接重新建立命令訊息以作為連接重新建立命令訊息。在彼實例中,EUTRAN可使用RRC連接重組態之修改形式,使得UE處之影響將使RRC連接經重新建立。此修改可(例如)包括指示目的為重新建立RRC連接之新資訊元素(IE)。舉例而言,此新IE可標記為「中止之RRC連接」、「中止指示符(Suspend Indicator)」、「中止指示符(Suspension Indicator)」或不同之某物。新IE可視情況存在於訊息中且IE在訊息中之存在可使UE重新建立RRC連接。或者,新IE可為布爾值且將IE設定為真可使UE中止RRC連接。其他新的或現有3GPP訊息亦可用於此目的。 Depending on the situation (and possibly as an alternative to using the RRC Connection Re-establishment command message shown in Step 8 above), the EUTRAN may also respond by an RRC Connection Reconfiguration message. In one scenario, where the EUTRAN will use the RRC Connection Reconfiguration message instead of the RRC Connection Reestablishment Command message as a connection re-establishment command message. In its example, the EUTRAN may use a modified form of RRC connection reconfiguration such that the impact at the UE will cause the RRC connection to be re-established. This modification may, for example, include a new information element (IE) indicating that the purpose is to re-establish an RRC connection. For example, the new IE may be marked as "aborted RRC connection", "Suspend Indicator", "Suspension Indicator" or something different. The new IE may be present in the message and the presence of the IE in the message may cause the UE to re-establish an RRC connection. Alternatively, the new IE may be a Boolean value and setting the IE to true may cause the UE to suspend the RRC connection. Other new or existing 3GPP messages can also be used for this purpose.
11. 若在UE處接收到RRC連接重組態訊息,則UE藉由RRC連接 重組態完成訊息來回應彼訊息。UE將使用RRC連接重組態完成訊息以作為連接重新建立完成訊息。其他新的或現有3GGPP訊息亦可用於此目的。 11. If the RRC connection reconfiguration message is received at the UE, the UE is connected by RRC. Reconfigure the completion message to respond to the message. The UE will use the RRC Connection Reconfiguration Complete message as the Connection Reestablishment Complete message. Other new or existing 3GGPP messages can also be used for this purpose.
12. 在此點,完全重新建立RRC連接且可起始或回復與UE之使用者平面資料通信。 12. At this point, the RRC connection is completely re-established and user plane data communication with the UE can be initiated or replied.
下文之實例情形14至16及各別圖31至33給出上文在情形13中所論述及圖30中展示之一般情形內的特定情形之較詳細實例。 The example scenarios 14 through 16 below and the respective graphs 31 through 33 give a more detailed example of the particular situation within the general case discussed above in the context 13 and shown in FIG.
圖31展示在eNB 102a上自中止重新建立UE 101之訊息序列圖,eNB 102a具有用於UE 101之RRC連接資訊或訊文。eNB 102a可為中止RRC連接之eNB或其可為不同eNB。 31 shows a message sequence diagram for re-establishing the UE 101 from the abort on the eNB 102a, the eNB 102a having RRC connection information or messages for the UE 101. The eNB 102a may be an eNB that suspends the RRC connection or it may be a different eNB.
1. 當觸發在UE 101處產生以用於重新建立中止之RRC連接時,UE將RRC連接重新建立請求訊息發送至eNB 102a。重新建立請求訊息可含有允許UE 101向eNB 102a指示重新建立之原因為重新啟動先前中止之RRC連接的重新建立原因欄位。 1. When triggering an RRC connection generated at the UE 101 for re-establishing the suspension, the UE transmits an RRC Connection Re-establishment Request message to the eNB 102a. The re-establishment request message may contain a re-establishment reason field that allows the UE 101 to indicate to the eNB 102a that the re-establishment is to restart the previously suspended RRC connection.
2. 當eNB 102a接收請求訊息時,eNB 102a擷取用於UE 101之所儲存RRC連接資訊且將RRC連接重新建立命令訊息發送至UE 101。 2. When the eNB 102a receives the request message, the eNB 102a retrieves the stored RRC connection information for the UE 101 and transmits an RRC Connection Re-establishment command message to the UE 101.
3. UE執行中止之RRC連接的重新建立且將RRC連接重新建立完成訊息發送至eNB。 3. The UE performs the reestablishment of the suspended RRC connection and sends an RRC Connection Reestablishment Complete message to the eNB.
4. eNB接著將RRC連接重組態訊息發送至UE。 4. The eNB then sends an RRC Connection Reconfiguration message to the UE.
5. UE完成RRC連接重組態且將RRC連接重組態完成訊息發送至eNB以完成RRC連接之重新建立。 5. The UE completes the RRC connection reconfiguration and sends an RRC Connection Reconfiguration Complete message to the eNB to complete the reestablishment of the RRC connection.
圖32展示用於紮駐於不具有RRC連接資訊或訊文之eNB 102b上之UE 101的中止之RRC連接之重新建立的訊息序列圖。 Figure 32 shows a message sequence diagram for re-establishment of an RRC connection for suspension of a UE 101 camped on an eNB 102b that does not have RRC connection information or messages.
1. 當觸發在UE 101處產生以用於重新建立中止之RRC連接 時,UE將RRC連接重新建立請求訊息發送至eNB 102b。重新建立請求訊息可含有允許UE 101向eNB 102b指示重新建立之原因為重新啟動先前中止之RRC連接的重新建立原因欄位。重新建立請求訊息亦可含有使eNB 102b能夠識別最初中止UE之RRC連接的eNB(eNB1 102a)之資訊。 1. When triggering an RRC connection generated at the UE 101 for re-establishing abort At this time, the UE transmits an RRC Connection Re-establishment Request message to the eNB 102b. The re-establishment request message may contain a re-establishment reason field that allows the UE 101 to indicate to the eNB 102b that the re-establishment is to restart the previously suspended RRC connection. The re-establishment request message may also contain information that enables the eNB 102b to identify the eNB (eNB1 102a) that originally suspended the RRC connection of the UE.
2. eNB 102b不具有用於UE 101之RRC訊文資訊且因此將中止RRC連接之RLF指示訊息(訊文提取)發送至舊eNB 102a。 2. The eNB 102b does not have RRC message information for the UE 101 and thus sends an RLF indication message (message extraction) that suspends the RRC connection to the old eNB 102a.
3. 舊eNB藉由將包括用於UE 101之RRC連接連接資訊之交遞請求發送至新eNB 102b來回應。 3. The old eNB responds by transmitting a handover request including RRC connection connection information for the UE 101 to the new eNB 102b.
4. 新eNB 102b藉由交遞請求應答來回應舊eNB。 4. The new eNB 102b responds to the old eNB by handing over the request response.
5. 新eNB 102b接著將RRC連接重新建立訊息發送至UE 101。 5. The new eNB 102b then sends an RRC Connection Re-establishment message to the UE 101.
6. UE 101執行中止之RRC連接的重新建立且藉由RRC連接重新建立完成訊息來回應新eNB 102b。 6. The UE 101 performs the reestablishment of the suspended RRC connection and responds to the new eNB 102b by the RRC Connection Reestablishment Complete message.
7. 新eNB接著將RRC連接重組態訊息發送至UE。 7. The new eNB then sends an RRC Connection Reconfiguration message to the UE.
8. UE完成RRC連接重組態且將RRC連接重組態完成訊息發送至新eNB以完成RRC連接之重新建立。 8. The UE completes the RRC connection reconfiguration and sends an RRC Connection Reconfiguration Complete message to the new eNB to complete the reestablishment of the RRC connection.
9. 新eNB 102b接著藉由MME 103b完成S1路徑切換。 9. The new eNB 102b then completes the S1 path switch by the MME 103b.
10. MME 103b向新eNB發送交遞請求應答。 10. The MME 103b sends a handover request response to the new eNB.
11. 新eNB 102b接著將使舊eNB 102a釋放用於UE 102之RRC連接組態或訊文的訊息發送至舊eNB 102a。 11. The new eNB 102b will then send a message to the old eNB 102a that the old eNB 102a is releasing the RRC connection configuration or message for the UE 102.
圖33展示自UE 101之中止重新建立的失效,繼之以使用追蹤區域更新(TAU)之NAS恢復程序的訊息序列圖。 Figure 33 shows a message sequence diagram of a NAS recovery procedure using Tracking Area Update (TAU), discontinued from UE 101.
1. 當觸發在UE 101處產生以用於重新建立中止之RRC連接時,UE將RRC連接重新建立請求訊息發送至eNB 102a。 1. When triggering an RRC connection generated at the UE 101 for re-establishing the suspension, the UE transmits an RRC Connection Re-establishment Request message to the eNB 102a.
2. 當eNB 102a接收到請求訊息時,eNB 102a判定其不具有用於 UE 101之RRC連接資訊且決定拒絕重新建立之請求。eNB 102a接著將RRC連接拒絕命令訊息發送至UE 101。 2. When the eNB 102a receives the request message, the eNB 102a determines that it does not have a request for The RRC connection information of the UE 101 determines the request to reject the re-establishment. The eNB 102a then transmits an RRC Connection Rejection Command message to the UE 101.
3. UE接著將RRC連接請求訊息發送至eNB以用於與eNB之新RRC連接。 3. The UE then sends an RRC Connection Request message to the eNB for a new RRC connection with the eNB.
4. eNB 102a接著將RRC連接設立訊息發送至UE 101。 4. The eNB 102a then sends an RRC Connection Setup message to the UE 101.
5. UE完成RRC連接設立且將RRC連接設立完成訊息發送至eNB 102a。 5. The UE completes the RRC connection setup and sends an RRC Connection Setup Complete message to the eNB 102a.
6. eNB 102a接著將DL資訊傳送訊息發送至UE。 6. The eNB 102a then sends a DL Info Transfer message to the UE.
7. 此之後為eNB 102a將RRC連接釋放訊息發送至UE 101。 7. The RRC Connection Release message is then sent to the UE 101 for the eNB 102a.
現將在以下編號條項中闡述與UE中止RRC連接之操作有關的本發明之額外態樣。 Additional aspects of the invention related to the operation of the UE to suspend the RRC connection will now be set forth in the following numbered clauses.
1. 一種在用於與一無線電存取網路(RAN)一起使用之一使用者設備(UE)中實施的方法,其包含:該UE中止與該RAN之一建立之RRC連接;當該RRC連接中止時,該UE監視以下中之至少一者:傳呼及用於該UE之下行鏈路資料的通知;及該UE儲存與該中止之RRC連接有關的RRC連接資料,該RRC連接資料可由該UE使用以重新啟動該中止之RRC連接。 CLAIMS 1. A method implemented in a User Equipment (UE) for use with a Radio Access Network (RAN), the method comprising: the UE suspending an RRC connection established with one of the RANs; when the RRC When the connection is aborted, the UE monitors at least one of: paging and notification for downlink data of the UE; and the UE stores RRC connection data related to the suspended RRC connection, and the RRC connection data may be The UE uses to restart the suspended RRC connection.
2. 如條項1闡述之方法,其中RRC連接資料包含表示以下中之一或多者的資料:‧該建立之RRC連接中的無線電承載之組態;‧與該建立之RRC連接有關的安全性參數;‧暫時小區識別符;‧MAC組態;‧實體層組態。 2. The method as set forth in clause 1, wherein the RRC connection data comprises data indicating one or more of: ‧ the configuration of the radio bearer in the established RRC connection; ‧ the security associated with the established RRC connection Sexual parameters; ‧ temporary cell identifier; ‧ MAC configuration; ‧ physical layer configuration
3. 如條項1或2闡述之方法,其進一步包含標示該儲存之RRC連 接資料以指示該RRC連接的該中止。 3. The method as set forth in clause 1 or 2, further comprising an RRC connection indicating the storage The data is received to indicate the suspension of the RRC connection.
4. 如條項1、2或3闡述之方法,其中回應於符合一RRC連接中止準則,該UE中止該建立之RRC連接。 4. The method as set forth in clause 1, 2 or 3, wherein the UE suspends the established RRC connection in response to complying with an RRC Connection Abort criterion.
5. 如條項4闡述之方法,該RRC連接中止準則包含以下中之一或多者:‧該UE處之一計時器的期滿;‧該UE處之一訊息的接收。 5. The method as set forth in clause 4, wherein the RRC connection suspension criterion comprises one or more of: ‧ expiration of a timer at the UE; ‧ reception of a message at the UE.
6. 如任一前述條項闡述之方法,其中該RAN具有用於該UE之與一核心網路(CN)的一建立之使用者平面連接,該方法進一步包含當該RRC連接中止時維持該RAN與該CN之間的該建立之使用者平面連接。 6. The method as set forth in any preceding clause, wherein the RAN has an established user plane connection with the core network (CN) for the UE, the method further comprising maintaining the RRC connection abort The established user plane connection between the RAN and the CN.
7. 如條項6闡述之方法,其中當該中止之RRC連接有效的RAN節點自該CN接收用於該UE之下行鏈路資料時,該RAN節點緩衝該下行鏈路資料且傳呼該UE或傳輸用於該UE之下行鏈路資料的一通知。 7. The method as set forth in clause 6, wherein the RAN node buffers the downlink data and pages the UE or when the RRC node that is in the RRC connection with the suspension receives the downlink data for the UE from the CN A notification for the downlink data of the UE is transmitted.
8. 如條項7闡述之方法,其中回應於該RAN節點未自該UE接收到對該傳呼或對下行鏈路資料之該通知的回應,該RAN節點向該CN發送一傳呼升級訊息。 8. The method as recited in clause 7, wherein the RAN node sends a paging upgrade message to the CN in response to the RAN node not receiving a response to the paging or the notification of the downlink data from the UE.
9. 如條項1至5中任一項闡述之方法,其進一步包含該UE或一RAN節點發送一訊息以告知該核心網路(CN)中之任何節點該RRC連接經中止。 9. The method as set forth in any one of clauses 1 to 5, further comprising the UE or a RAN node transmitting a message to inform any node in the core network (CN) that the RRC connection is aborted.
10. 如條項9闡述之方法,其中該RAN具有用於該UE之與該CN的一建立之使用者平面連接,該方法進一步包含中止該CN與該RAN之間的該建立之使用者平面連接。 10. The method as set forth in clause 9, wherein the RAN has an established user plane connection with the CN for the UE, the method further comprising aborting the established user plane between the CN and the RAN connection.
11. 如條項10闡述之方法,其中發送至該CN之該訊息包括該UE之一識別,中止該CN與該RAN之間的該建立之使用者平面連接之該方法包含該RAN或該CN中之一或多個節點或兩者: 中斷用於該UE之使用者平面資料經由該RAN與該CN之間的該建立之使用者平面連接的傳輸及接收;及儲存表示該建立之使用者平面連接的CN-RAN連接資料,該CN-RAN連接資料可經使用以藉由作為一RRC連接重新啟動程序之結果而重新啟動該RAN與該CN之間的該使用者平面連接來稍後回復至該UE之使用者平面資料的傳輸及接收。 11. The method as set forth in clause 10, wherein the message sent to the CN comprises one of the UEs identifying, the method of suspending the established user plane connection between the CN and the RAN comprises the RAN or the CN One or more nodes or both: Interrupting transmission and reception of user plane data for the UE via the established user plane connection between the RAN and the CN; and storing CN-RAN connection data indicating the established user plane connection, the CN - RAN connection data may be used to retransmit the user plane data between the RAN and the CN as a result of an RRC connection restart procedure to later retransmit the user plane data to the UE and receive.
12. 如條項10或11闡述之方法,其中當在該CN處接收到用於該UE之下行鏈路資料時,該CN之一節點緩衝該下行鏈路資料且該CN藉由該RAN之一或多個小區來起始該UE之該傳呼。 12. The method as set forth in clause 10 or 11, wherein, when receiving downlink data for the UE at the CN, one of the CN nodes buffers the downlink data and the CN is by the RAN One or more cells to initiate the paging of the UE.
13. 如條項10、11或12闡述之方法,其進一步包含該CN之一節點維持用於該UE之一有效性指示符,該有效性指示符可用於檢查該RRC連接之有效性以作為該RRC連接重新啟動程序之部分。 13. The method as set forth in clause 10, 11 or 12, further comprising maintaining, by the one node of the CN, a validity indicator for the UE, the validity indicator being usable to check validity of the RRC connection as The RRC connection is part of the restart procedure.
14. 如條項13闡述之方法,其中該有效性指示符之值取決於以下中之一或多者:該UE之位置;一計時器。 14. The method as set forth in clause 13, wherein the value of the validity indicator is dependent on one or more of: a location of the UE; a timer.
15. 如任一前述條項闡述之方法,其進一步包含:該UE在該RRC連接中止之時間期間藉由小區選擇或重新選擇程序執行自主行動性控制且作為該中止之RRC連接的該重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該UE將行動性控制讓與該RAN。 15. The method as recited in any preceding clause, further comprising: the UE performing autonomous mobility control by a cell selection or reselection procedure during the time of the RRC connection suspension and as the restart of the suspended RRC connection As a result of a normal RRC connection procedure with the UE establishing a new RRC connection, the UE grants mobility control to the RAN.
16. 如條項15闡述之方法,其中當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE繼續儲存該RRC連接資料且省略執行告知該CN該UE之該行動性的與該CN之任何通信。 16. The method as recited in clause 15, wherein the UE continues to store the RRC connection profile and omits execution when the UE selects one of the RANs in which the suspended RRC connection indicated by the stored RRC connection profile is invalid. Inform the CN of the UE's mobility of any communication with the CN.
17. 如條項15闡述之方法,其中當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE傳輸告知該RAN或該CN此事件的一訊息。 17. The method as recited in clause 15, wherein the UE transmits a notification to the RAN or the CN of the event when the UE selects a cell of the RAN in which the suspended RRC connection indicated by the stored RRC connection profile is invalid. a message.
18. 如條項17闡述之方法,其中作為選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區之結果,該UE亦釋放該RRC連接且進入閒置模式。 18. The method as recited in clause 17, wherein the UE also releases the RRC connection and enters an idle mode as a result of selecting a cell of the RAN in which the suspended RRC connection indicated by the stored RRC connection profile is invalid.
19. 如條項17或18闡述之方法,其中由該UE發送之該訊息由該RAN或該CN的接收使該RAN或CN執行以下中之一或多者:釋放該無效RRC連接;起始一正常RRC連接程序以與該UE建立一新RRC連接;釋放該CN與RAN之間的用於該UE之一建立之使用者平面連接。 19. The method as recited in clause 17 or 18, wherein the message transmitted by the UE is received by the RAN or the CN causes the RAN or CN to perform one or more of: releasing the invalid RRC connection; A normal RRC connection procedure to establish a new RRC connection with the UE; releasing a user plane connection between the CN and the RAN for establishment of one of the UEs.
20. 如條項15闡述之方法,其中當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE繼續儲存該RRC連接資料且傳輸告知該RAN或該CN此事件的一訊息。 20. The method as recited in clause 15, wherein the UE continues to store the RRC connection data and transmits the notification when the UE selects one of the RANs in which the suspended RRC connection indicated by the stored RRC connection data is invalid. The RAN or a message of the CN event.
21. 如任一前述條項闡述之方法,其進一步包含:該UE藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;及回應於該UE判定該中止之RRC連接仍有效,該UE將一RRC連接重新啟動請求訊息發送至該RAN。 21. The method as recited in any preceding clause, further comprising: determining, by the reference to the stored RRC connection data, whether the suspended RRC connection is still valid; and in response to the UE determining that the suspended RRC connection is still valid The UE sends an RRC Connection Restart Request message to the RAN.
22. 如條項21闡述之方法,其進一步包含:回應於自該RAN接收一RRC連接重新啟動完成訊息,該UE經由該重新啟動之RRC連接回復與該RAN之使用者平面資料傳送。 22. The method as set forth in clause 21, further comprising: in response to receiving an RRC Connection Restart Complete message from the RAN, the UE replies to the user plane data transfer with the RAN via the restarted RRC connection.
23. 如條項22闡述之方法,其進一步包含:回應於自該RAN接收一RRC連接重新啟動拒絕訊息,該UE釋放該中止之RRC連接且進入閒置模式;及此後該UE起始一正常RRC連接建立程序以與該RAN建立一新RRC連接。 23. The method as set forth in clause 22, further comprising: in response to receiving an RRC connection restart reject message from the RAN, the UE releasing the suspended RRC connection and entering an idle mode; and thereafter the UE initiates a normal RRC A connection setup procedure is established to establish a new RRC connection with the RAN.
24. 如條項23之方法,其中回應於一RAN節點判定其不具有用於該UE之一有效的中止之RRC連接,該RAN節點將該RRC連接重新啟 動拒絕訊息傳輸至該UE。 24. The method of clause 23, wherein the RAN node re-initiates the RRC connection in response to a RAN node determining that it does not have an RRC connection for one of the valid terminations of the UE The mobile reject message is transmitted to the UE.
25. 如任一前述條項闡述之方法,其進一步包含:該UE藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;回應於該UE判定該中止之RRC連接無效,該UE釋放該中止之RRC連接且進入閒置模式;及此後該UE起始一正常RRC連接建立程序以與該RAN建立一新RRC連接。 25. The method as recited in any preceding clause, further comprising: determining, by the reference to the stored RRC connection data, whether the suspended RRC connection is still valid; in response to the UE determining that the suspended RRC connection is invalid, The UE releases the aborted RRC connection and enters an idle mode; and thereafter the UE initiates a normal RRC connection setup procedure to establish a new RRC connection with the RAN.
26. 如條項21至25中任一項之方法,其中該UE判定該中止之RRC連接是否仍有效包含以下中之至少一者:‧判定該UE當前是否在其中由該儲存之RRC連接資料表示的該中止之RRC連接仍有效的該RAN之一小區中;及‧判定一計時器是否未期滿。 The method of any one of clauses 21 to 25, wherein the UE determines whether the suspended RRC connection is still valid, comprising at least one of: determining whether the UE is currently in the RRC connection data by the storage The indicated RRC connection of the suspension is still valid in one of the RAN cells; and ‧ determines whether a timer has not expired.
27. 如條項21至26之方法,其進一步包含作為該中止之RRC連接的該重新啟動或一新RRC連接之該建立的結果,該UE將該UE之行動性控制讓與該RAN。 27. The method of clauses 21 to 26, further comprising the result of the establishing of the restart or a new RRC connection as the suspended RRC connection, the UE granting the UE's mobility control to the RAN.
28. 如任一前述條項之方法,其進一步包含回應於以下各者而起始該中止之RRC連接的該重新啟動:‧該UE經由一RRC連接之使用者平面而產生上行鏈路資料;或‧在該UE處接收傳呼;或‧在該UE處接收該RAN或該CN緩衝下行鏈路資料以發送至該UE之一通知。 28. The method of any preceding clause, further comprising initiating the restart of the suspended RRC connection in response to: ???the UE generating uplink data via an RRC connected user plane; Or ‧ receiving a paging at the UE; or ‧ receiving the RAN or the CN buffered downlink material at the UE for transmission to one of the UE notifications
29. 如任一前述條項闡述之方法,其中該UE經組態以根據LTE或LTE進階協定與該RAN通信。 29. The method as set forth in any preceding clause, wherein the UE is configured to communicate with the RAN in accordance with an LTE or LTE advanced protocol.
30. 如任一前述條項闡述之方法,其中該RAN經組態以根據該 等LTE或LTE進階協定與該UE通信。 30. The method as recited in any preceding clause, wherein the RAN is configured to The LTE or LTE advanced protocol communicates with the UE.
31. 如任一前述條項闡述之方法,其中該或該等RAN節點為(若干)eNode B。 31. The method as set forth in any preceding clause, wherein the or the RAN node is (several) eNode B.
32. 一種用於與一無線電存取網路(RAN)一起使用之使用者設備(UE),該UE經組態以:中止與該RAN之一建立之RRC連接;當該RRC連接中止時,監視以下中之至少一者:傳呼及用於該UE之下行鏈路資料的通知;及儲存表示該中止之RRC連接的RRC連接資料,該RRC連接資料可由該UE使用以重新啟動該中止之RRC連接。 32. A User Equipment (UE) for use with a Radio Access Network (RAN) configured to: suspend an RRC connection established with one of the RANs; when the RRC connection is aborted, Monitoring at least one of: paging and notification for downlink data of the UE; and storing RRC connection data indicating the suspended RRC connection, the RRC connection profile may be used by the UE to restart the suspended RRC connection.
33. 如條項32闡述之UE,其中RRC連接資料包含表示以下中之一或多者的資料:‧該建立之RRC連接中的無線電承載之組態;‧與該建立之RRC連接有關的安全性參數;‧暫時小區識別符;‧MAC組態;‧實體層組態。 33. The UE as set forth in clause 32, wherein the RRC connection profile comprises data indicating one or more of: ‧ a configuration of a radio bearer in the established RRC connection; ‧ security associated with the established RRC connection Sexual parameters; ‧ temporary cell identifier; ‧ MAC configuration; ‧ physical layer configuration
34. 如條項32或33闡述之UE,其進一步包含該UE經組態以標示該儲存之RRC連接資料以指示該RRC連接的該中止。 34. The UE as set forth in clause 32 or 33, further comprising the UE configured to indicate the stored RRC connection profile to indicate the suspension of the RRC connection.
35. 如條項32、33或34闡述之UE,其進一步包含該UE經組態以回應於符合一RRC連接中止準則而中止該建立之RRC連接。 35. The UE as set forth in clause 32, 33 or 34, further comprising the UE being configured to suspend the established RRC connection in response to complying with an RRC Connection Abort criterion.
36. 如條項35闡述之UE,其中該RRC連接中止準則包含以下中之一或多者:‧該UE處之一計時器的期滿;‧該UE處之一訊息的接收。 36. The UE as set forth in clause 35, wherein the RRC connection suspension criterion comprises one or more of: ‧ expiration of a timer at the UE; ‧ reception of a message at the UE.
37. 如條項32至36中任一項闡述之UE,其進一步包含: 該UE經組態以在該RRC連接中止之時間期間藉由小區選擇或重新選擇程序執行自主行動性控制且作為該中止之RRC連接的該重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該UE將行動性控制讓與該RAN。 37. The UE as set forth in any one of clauses 32 to 36, further comprising: The UE is configured to perform autonomous mobility control by a cell selection or reselection procedure during the time of the RRC connection suspension and as a restart of the suspended RRC connection or establish a new RRC connection with the UE. As a result of the RRC connection procedure, the UE grants mobility control to the RAN.
38. 如條項37闡述之UE,該UE經組態以使得,當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE繼續儲存該RRC連接資料且省略執行告知該CN該UE之該行動性的與該CN之任何通信。 38. The UE as set forth in clause 37, the UE is configured such that when the UE selects one of the RANs in which the suspended RRC connection indicated by the stored RRC connection profile is invalid, the UE continues to store The RRC connects the data and omits any communication with the CN that performs the mobility of the UE to the CN.
39. 如條項37闡述之UE,該UE經組態以使得,當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE傳輸告知該RAN或該CN此事件的一訊息。 39. The UE as set forth in clause 37, the UE configured to cause the UE to transmit a notification when the UE selects one of the RANs in which the suspended RRC connection indicated by the stored RRC connection profile is invalid The RAN or a message of the CN event.
40. 如條項39闡述之UE,該UE經組態以使得作為選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區之結果,該UE亦釋放該RRC連接且進入閒置模式。 40. The UE as set forth in clause 39, the UE is configured such that the UE also releases the RRC as a result of selecting one of the RANs in which the RRC connection of the suspension indicated by the stored RRC connection profile is invalidated Connect and enter idle mode.
41. 如條項39或40闡述之UE,其中由該UE發送之該訊息由該RAN或該CN的接收使該RAN或CN執行以下中之一或多者:釋放該無效RRC連接;起始一正常RRC連接程序以與該UE建立一新RRC連接;釋放該CN與RAN之間的用於該UE之一建立之使用者平面連接。 41. The UE as set forth in clause 39 or 40, wherein the message transmitted by the UE is received by the RAN or the CN causes the RAN or CN to perform one or more of: releasing the invalid RRC connection; A normal RRC connection procedure to establish a new RRC connection with the UE; releasing a user plane connection between the CN and the RAN for establishment of one of the UEs.
42. 如條項37闡述之UE,該UE經組態以使得,當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE繼續儲存該RRC連接資料且傳輸告知該RAN或該CN此事件的一訊息。 42. The UE as set forth in clause 37, the UE configured to, when the UE selects one of the RANs in which the suspended RRC connection indicated by the stored RRC connection profile is invalid, the UE continues to store The RRC connects the data and transmits a message informing the RAN or the CN of the event.
43. 如條項32至42中任一項闡述之UE,其進一步包含該UE經組態以使得,作為該RRC連接重新啟動程序之部分:該UE藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;及 回應於該UE判定該中止之RRC連接仍有效,該UE將一RRC連接重新啟動請求訊息發送至該RAN。 43. The UE as set forth in any one of clauses 32 to 42, further comprising the UE being configured to be part of the RRC connection restart procedure: the UE determining the reference by referring to the stored RRC connection profile Whether the suspended RRC connection is still valid; and In response to the UE determining that the suspended RRC connection is still valid, the UE sends an RRC Connection Restart Request message to the RAN.
44. 如條項43闡述之UE,其進一步包含:該UE經組態以使得,回應於自該RAN接收一RRC連接重新啟動完成訊息,該UE經由該重新啟動之RRC連接回復與該RAN之使用者平面資料傳送。 44. The UE as set forth in clause 43, further comprising: the UE configured to, in response to receiving an RRC Connection Restart Complete message from the RAN, the UE replies with the RAN via the restarted RRC connection User plane data transfer.
45. 如條項43闡述之UE,其進一步包含:該UE經組態以使得,回應於自該RAN接收一RRC連接重新啟動拒絕訊息,該UE釋放該中止之RRC連接且進入閒置模式;及此後該UE經組態以起始一正常RRC連接建立程序以與該RAN建立一新RRC連接。 45. The UE as set forth in clause 43, further comprising: the UE configured to, in response to receiving an RRC Connection Restart Reject message from the RAN, the UE releasing the suspended RRC connection and entering an idle mode; Thereafter the UE is configured to initiate a normal RRC connection setup procedure to establish a new RRC connection with the RAN.
46. 如條項43闡述之UE,其中回應於一RAN節點判定其不具有用於該UE之一有效的中止之RRC連接,該RAN節點將該RRC連接重新啟動拒絕訊息傳輸至該UE。 46. The UE as set forth in clause 43, wherein the RAN node transmits the RRC Connection Restart Reject message to the UE in response to a RAN node determining that it does not have an RRC connection for one of the UE's active aborts.
47. 如條項32至46中任一項闡述之UE,其進一步包含該UE經組態以:藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;回應於該UE判定該中止之RRC連接無效,釋放該中止之RRC連接且進入閒置模式;及此後起始一正常RRC連接建立程序以與該RAN建立一新RRC連接。 47. The UE as set forth in any one of clauses 32 to 46, further comprising the UE configured to: determine, by reference to the stored RRC connection profile, whether the suspended RRC connection is still valid; in response to the UE determining The suspended RRC connection is invalid, the suspended RRC connection is released and enters the idle mode; and thereafter a normal RRC connection setup procedure is initiated to establish a new RRC connection with the RAN.
48. 如條項43至47中任一項闡述之UE,其進一步包含該UE經組態以作為判定該中止之RRC連接是否仍有效之部分,判定以下中之至少一者:‧該UE當前是否在其中由該儲存之RRC連接資料表示的該中止 之RRC連接仍有效的該RAN之一小區中;及‧一計時器是否未期滿。 48. The UE as set forth in any one of clauses 43 to 47, further comprising the UE configured to determine whether the suspended RRC connection is still valid, determining at least one of: Whether the suspension is indicated by the stored RRC connection data The RRC connection is still valid in one of the RAN cells; and ‧ a timer has not expired.
49. 如條項43至48中任一項闡述之UE,其進一步包含該UE經組態以作為該中止之RRC連接的該重新啟動或一新RRC連接之該建立的結果,將該UE之行動性控制讓與該RAN。 49. The UE as set forth in any one of clauses 43 to 48, further comprising the UE configured to be the result of the establishment of the restart or a new RRC connection of the suspended RRC connection, the UE The mobility control gives way to the RAN.
50. 如條項32至49中任一項闡述之UE,其進一步包含該UE經組態以回應於以下中之至少一者而起始該中止之RRC連接重新啟動程序的該重新啟動:‧該UE經由一RRC連接之使用者平面而產生上行鏈路資料;‧在該UE處接收傳呼;及‧在該UE處接收指示該RAN或該CN緩衝下行鏈路資料以經由一RRC連接之該使用者平面發送至該UE之一訊息。 50. The UE as set forth in any one of clauses 32 to 49, further comprising the restarting of the RRC Connection Restart procedure in which the UE is configured to initiate the suspension in response to at least one of: The UE generates uplink data via an RRC connected user plane; ‧ receives a paging at the UE; and ‧ receives at the UE the indication that the RAN or the CN buffered downlink data to connect via an RRC The user plane sends a message to one of the UEs.
51. 如條項32至50中任一項闡述之UE,其中該UE經組態以根據LTE或LTE進階協定與該RAN通信。 51. The UE as set forth in any one of clauses 32 to 50, wherein the UE is configured to communicate with the RAN according to an LTE or LTE advanced protocol.
52. 一種無線通信系統,其包含如條項32至51中任一項闡述之一UE,及具有用於該UE之與一核心網路(CN)的一建立之使用者平面連接之一RAN,該系統經組態以當該RRC連接中止時維持該RAN與該CN之間的該建立之使用者平面連接。 52. A wireless communication system comprising one of the UEs as set forth in any one of clauses 32 to 51, and one of the user plane connections with an established core network (CN) for the UE The system is configured to maintain the established user plane connection between the RAN and the CN when the RRC connection is aborted.
53. 如條項52闡述之無線通信系統,其進一步包含該中止之RRC連接有效的RAN節點經組態以使得當該RAN節點自該CN接收用於該UE之下行鏈路資料時,該RAN節點緩衝該下行鏈路資料且傳呼該UE或傳輸用於該UE之下行鏈路資料的一通知。 53. The wireless communication system as set forth in clause 52, further comprising the RRC connection valid RAN node configured to cause the RAN node to receive downlink data for the UE from the CN, the RAN The node buffers the downlink data and pages the UE or transmits a notification for the downlink data of the UE.
54. 如條項53闡述之無線通信系統,其進一步包含該RAN節點經組態以使得,回應於該RAN節點未自該UE接收到對該傳呼或對下行鏈路資料之該通知的回應,該RAN節點向該CN發送一傳呼升級訊息。 54. The wireless communication system as set forth in clause 53, further comprising the RAN node being configured to, in response to the RAN node not receiving a response to the paging or the notification of downlink data from the UE, The RAN node sends a paging upgrade message to the CN.
55. 一種無線通信系統,其包含如條項32至51中任一項闡述之一UE,及一RAN,該無線通信系統經組態以使得該UE或一RAN節點發送一訊息以告知該核心網路(CN)中之任何節點該RRC連接經中止。 55. A wireless communication system comprising a UE as set forth in any one of clauses 32 to 51, and a RAN, the wireless communication system being configured to cause the UE or a RAN node to send a message to inform the core The RRC connection is aborted by any node in the network (CN).
56. 如條項55闡述之無線通信系統,其中該RAN具有用於該UE之與該CN的一建立之使用者平面連接,該無線通信系統經組態以使得該無線通信系統中止該CN與該RAN之間的該建立之使用者平面連接。 56. The wireless communication system as set forth in clause 55, wherein the RAN has an established user plane connection with the CN for the UE, the wireless communication system configured to cause the wireless communication system to suspend the CN and The established user plane connection between the RANs.
57. 如條項56闡述之無線通信系統,其進一步包含該無線通信系統經組態以使得發送至該CN之該訊息包括該UE之一識別,且使得為了中止該CN與該RAN之間的該建立之使用者平面連接,該RAN或該CN中之一或多個節點或兩者:中斷用於該UE之使用者平面資料經由該RAN與該CN之間的該使用者平面連接的傳輸及接收;及儲存表示該建立之使用者平面連接的CN-RAN連接資料,該CN-RAN連接資料可經使用以藉由作為一RRC連接重新啟動程序之結果而回復該RAN與該CN之間的該使用者平面連接來稍後回復至該UE之使用者平面資料的傳輸及接收。 57. The wireless communication system as set forth in clause 56, further comprising the wireless communication system being configured such that the message sent to the CN includes identification by one of the UEs and such that in order to suspend between the CN and the RAN The established user plane connection, the RAN or one or more of the CNs or both: interrupting transmission of user plane data for the UE via the user plane connection between the RAN and the CN And receiving; and storing CN-RAN connection data indicating the established user plane connection, the CN-RAN connection data can be used to reply between the RAN and the CN by being a result of an RRC connection restart procedure The user plane is connected to later transmit and receive the user plane data of the UE.
58. 如條項56或57闡述之無線通信系統,其進一步包含該無線通信系統經組態以使得,當在該CN處接收到用於該UE之下行鏈路資料時,該CN之一節點緩衝該下行鏈路資料且該CN藉由該RAN之一或多個小區來起始該UE之該傳呼。 58. The wireless communication system as set forth in clause 56 or 57, further comprising the wireless communication system being configured such that when a downlink data for the UE is received at the CN, one of the CN nodes The downlink data is buffered and the CN initiates the paging of the UE by one or more cells of the RAN.
59. 如條項56、57或58闡述之無線通信系統,其進一步包含該無線通信系統經組態以使得該CN之一節點維持用於該UE之一有效性指示符,該有效性指示符可用於檢查該RRC連接之有效性以作為該RRC連接重新啟動程序之部分。 59. The wireless communication system as set forth in clause 56, 57 or 58, further comprising the wireless communication system being configured to cause one of the CN nodes to maintain a validity indicator for the UE, the validity indicator It can be used to check the validity of the RRC connection as part of the RRC Connection Restart procedure.
60. 如條項59闡述之無線通信系統,其中該有效性指示符之值 取決於以下中之一或多者:該UE之位置;一計時器。 60. The wireless communication system as set forth in clause 59, wherein the value of the validity indicator Depending on one or more of the following: the location of the UE; a timer.
61. 如條項52至60中任一項闡述之無線通信系統,其中該RAN經組態以根據LTE或LTE進階協定與該UE通信。 61. The wireless communication system as set forth in any one of clauses 52 to 60, wherein the RAN is configured to communicate with the UE in accordance with an LTE or LTE advanced protocol.
62. 如條項52至60中任一項闡述之無線通信系統,其中該或該等RAN節點為(若干)eNode B。 62. A wireless communication system as set forth in any one of clauses 52 to 60, wherein the or the RAN nodes are (several) eNode Bs.
63. 一種具有指令之電腦程式產品,該等指令在由用於與一無線電存取網路(RAN)一起使用之使用者設備(UE)的一處理器執行時使該UE經組態以根據條項1至31中任一項闡述之一方法操作。 63. A computer program product with instructions that, when executed by a processor for a user equipment (UE) for use with a radio access network (RAN), configures the UE to One of the items 1 to 31 sets forth one of the method operations.
64. 一種具有指令之電腦程式產品,該等指令在由用於與一使用者設備(UE)一起使用之一無線電存取網路(RAN)之一節點的一處理器執行時使該RAN節點經組態以根據條項1至31中任一項闡述之一方法操作。 64. A computer program product with instructions for causing a RAN node to be executed by a processor for use in a node of a radio access network (RAN) for use with a user equipment (UE) It is configured to operate in accordance with one of the methods set forth in any one of clauses 1 to 31.
現將在以下編號條項中闡述與RAN節點中止RRC連接之操作有關的本發明之額外態樣。 Additional aspects of the present invention related to the operation of the RAN node to suspend the RRC connection will now be set forth in the following numbered clauses.
1. 一種在用於與一使用者設備(UE)一起使用之一無線電存取網路(RAN)之一節點中實施的方法,其包含:該RAN節點中止與該UE之一建立之RRC連接;此後該RAN節點可操作以在該RRC連接中止時,傳呼該UE傳呼或傳輸用於該UE之下行鏈路資料的通知或兩者;及該RAN節點儲存與該中止之RRC連接有關的RRC連接資料,該RRC連接資料可由該RAN節點使用以重新啟動該中止之RRC連接。 CLAIMS 1. A method implemented in a node of a radio access network (RAN) for use with a user equipment (UE), the method comprising: the RAN node suspending an RRC connection established with one of the UEs Thereafter the RAN node is operable to, when the RRC connection is aborted, to page the UE to page or transmit a notification for the downlink data of the UE or both; and the RAN node stores an RRC related to the suspended RRC connection Connection data, the RRC connection data may be used by the RAN node to restart the suspended RRC connection.
2. 如條項1闡述之方法,其中RRC連接資料包含表示以下中之一或多者的資料:‧該建立之RRC連接中的無線電承載之組態;‧與該建立之RRC連接有關的安全性參數;‧暫時小區識別符; ‧MAC組態;‧實體層組態。 2. The method as set forth in clause 1, wherein the RRC connection data comprises data indicating one or more of: ‧ the configuration of the radio bearer in the established RRC connection; ‧ the security associated with the established RRC connection Sexual parameter; ‧ temporary cell identifier; ‧MAC configuration; ‧ physical layer configuration.
3. 如條項1或2闡述之方法,其進一步包含標示該儲存之RRC連接資料以指示該RRC連接的該中止。 3. The method as set forth in clause 1 or 2, further comprising indicating the stored RRC connection profile to indicate the suspension of the RRC connection.
4. 如條項1、2或3闡述之方法,其中回應於符合一RRC連接中止準則,該RAN節點中止該建立之RRC連接。 4. The method as set forth in clause 1, 2 or 3, wherein the RAN node suspends the established RRC connection in response to complying with an RRC Connection Abort criterion.
5. 如條項4闡述之方法,該RRC連接中止準則包含以下中之一或多者:‧該RAN節點處之一計時器的期滿;‧一訊息由該RAN節點傳輸至該UE以指示該建立之RRC連接的中止。 5. The method as set forth in clause 4, wherein the RRC connection suspension criterion comprises one or more of: ‧ expiration of a timer at the RAN node; ‧ a message transmitted by the RAN node to the UE to indicate The establishment of the RRC connection is suspended.
6. 如條項1至5中任一項闡述之方法,其中該RAN節點具有用於該UE之與一核心網路(CN)的一建立之使用者平面連接,該方法進一步包含當該RRC連接中止時維持該RAN節點與該CN之間的該建立之使用者平面連接。 6. The method as set forth in any one of clauses 1 to 5, wherein the RAN node has an established user plane connection with the core network (CN) for the UE, the method further comprising when the RRC The established user plane connection between the RAN node and the CN is maintained when the connection is aborted.
7. 如條項6闡述之方法,其中當該RAN節點自該CN接收用於該UE之下行鏈路資料時,該RAN節點緩衝該下行鏈路資料且傳呼該UE或傳輸用於該UE之下行鏈路資料的一通知。 7. The method as set forth in clause 6, wherein when the RAN node receives downlink data for the UE from the CN, the RAN node buffers the downlink data and pages the UE or transmits the UE for transmission. A notification of the downlink data.
8. 如條項7闡述之方法,其中回應於該RAN節點未自該UE接收到對該傳呼或對下行鏈路資料之該通知的回應,該RAN節點向該CN發送一傳呼升級訊息。 8. The method as recited in clause 7, wherein the RAN node sends a paging upgrade message to the CN in response to the RAN node not receiving a response to the paging or the notification of the downlink data from the UE.
9. 如條項1至5中任一項闡述之方法,其進一步包含該UE或該RAN節點發送一訊息以告知該核心網路(CN)中之任何節點該RRC連接經中止。 9. The method as set forth in any one of clauses 1 to 5, further comprising the UE or the RAN node transmitting a message to inform any node in the core network (CN) that the RRC connection is aborted.
10. 如條項9闡述之方法,其中該RAN節點具有用於該UE之與一CN的一建立之使用者平面連接,該方法進一步包含中止用於該UE 之該CN與該RAN之間的該建立之使用者平面連接。 10. The method as set forth in clause 9, wherein the RAN node has an established user plane connection with the CN for the UE, the method further comprising aborting for the UE The established user plane connection between the CN and the RAN.
11. 如條項10闡述之方法,其中發送至該CN之該訊息包括該UE之一識別,該方法進一步包含該RAN節點或一或多個CN節點或兩者:中斷用於該UE之使用者平面資料經由該CN與該RAN節點之間的該建立之使用者平面連接的傳輸及接收;及儲存表示與該CN之該建立之使用者平面連接的CN-RAN連接資料,該CN-RAN連接資料可經使用以藉由作為一RRC連接重新啟動程序之結果而重新啟動該CN與該RAN節點之間的該使用者平面連接來稍後回復至該UE之使用者平面資料的傳輸及接收。 11. The method as set forth in clause 10, wherein the message sent to the CN comprises identification by one of the UEs, the method further comprising the RAN node or one or more CN nodes or both: interrupting use for the UE The plane data is transmitted and received via the established user plane connection between the CN and the RAN node; and the CN-RAN connection data indicating the user plane connection with the CN is stored, the CN-RAN The connection profile can be used to retransmit the user plane connection between the CN and the RAN node as a result of an RRC connection restart procedure to later transmit and receive user plane data to the UE .
12. 如條項10或11闡述之方法,其中當在該CN處接收到用於該UE之下行鏈路資料時,該CN之一節點緩衝該下行鏈路資料且該CN藉由該RAN之一或多個小區來起始該UE之該傳呼。 12. The method as set forth in clause 10 or 11, wherein, when receiving downlink data for the UE at the CN, one of the CN nodes buffers the downlink data and the CN is by the RAN One or more cells to initiate the paging of the UE.
13. 如條項10、11或12闡述之方法,其進一步包含該CN之一節點維持用於該UE之一有效性指示符,該有效性指示符可用於檢查該RRC連接之有效性以作為該RRC連接重新啟動程序之部分。 13. The method as set forth in clause 10, 11 or 12, further comprising maintaining, by the one node of the CN, a validity indicator for the UE, the validity indicator being usable to check validity of the RRC connection as The RRC connection is part of the restart procedure.
14. 如條項13闡述之方法,其中該有效性指示符之值取決於以下中之一或多者:使用者之位置;一計時器。 14. The method as set forth in clause 13, wherein the value of the validity indicator is dependent on one or more of: a location of the user; a timer.
15. 如任一前述條項闡述之方法,其進一步包含:該RAN將該UE之行動性控制讓與該UE直至作為該中止之RRC連接的該重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該RAN回復該UE之行動性控制為止。 15. The method as recited in any preceding clause, further comprising: the RAN granting the UE's mobility control to the UE until the restart as the suspended RRC connection or establishing a new RRC connection with the UE As a result of a normal RRC connection procedure, the RAN replies to the UE's mobility control.
16. 如條項15闡述之方法,其中當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該RAN接收告知該RAN此事件的一訊息。 16. The method as recited in clause 15, wherein the RAN receives a message informing the RAN of the event when the UE selects a cell of the RAN in which the suspended RRC connection indicated by the stored RRC connection profile is invalid. .
17. 如條項16闡述之方法,其中由該UE發送之該訊息由該RAN 的接收使該RAN執行以下中之一或多者:釋放該無效之中止之RRC連接;起始與該UE之一新RRC連接;釋放該CN與RAN之間的用於該UE之一建立之使用者平面連接。 17. The method as set forth in clause 16, wherein the message transmitted by the UE is performed by the RAN Receiving causes the RAN to perform one or more of: releasing the RRC connection of the invalid suspension; initiating a new RRC connection with one of the UEs; releasing the establishment between the CN and the RAN for one of the UEs User plane connection.
18. 如條項15、16或17闡述之方法,其進一步包含作為該中止之RRC連接的重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該RAN回復該UE之行動性控制。 18. The method as set forth in clause 15, 16 or 17, further comprising as a result of a restart of the RRC connection of the suspension or a normal RRC connection procedure for establishing a new RRC connection with the UE, the RAN replies to the UE Mobile control.
19. 如任一前述條項闡述之方法,其中回應於自該UE接收一RRC連接重新啟動請求訊息,該RAN節點:藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;及回應於該RAN節點判定該中止之RRC連接仍有效,將一重新啟動請求完成訊息發送至該UE且此後經由該重新啟動之RRC連接回復與該UE之使用者平面資料傳送;或回應於該RAN節點判定該中止之RRC連接無效,將一重新啟動請求拒絕訊息發送至該UE。 19. The method as recited in any preceding clause, wherein, in response to receiving an RRC Connection Restart Request message from the UE, the RAN node determines whether the suspended RRC connection is still valid by referring to the stored RRC connection profile; And in response to the RAN node determining that the suspended RRC connection is still valid, transmitting a restart request completion message to the UE and thereafter replying with the user plane data transmission of the UE via the restarted RRC connection; or responding to the The RAN node determines that the suspended RRC connection is invalid, and sends a restart request reject message to the UE.
20. 如條項19闡述之方法,其中該RAN節點判定該中止之RRC連接是否仍有效包含以下中之至少一者:‧判定一計時器未期滿;及‧判定未釋放該RRC連接。 20. The method as set forth in clause 19, wherein the RAN node determines whether the suspended RRC connection is still valid, comprising at least one of: ‧ determining that a timer has not expired; and ‧ determining that the RRC connection is not released.
21. 如任一前述條項闡述之方法,其中該UE經組態以根據LTE或LTE進階協定與該RAN通信。 21. The method as set forth in any preceding clause, wherein the UE is configured to communicate with the RAN in accordance with an LTE or LTE advanced protocol.
22. 如任一前述條項闡述之方法,其中該RAN經組態以根據該等LTE或LTE進階協定與該UE通信。 22. The method as set forth in any preceding clause, wherein the RAN is configured to communicate with the UE in accordance with the LTE or LTE advanced protocols.
23. 如任一前述條項闡述之方法,其中該或該等RAN節點為(若干)eNode B。 23. The method as set forth in any preceding clause, wherein the or the RAN node is (several) eNode B.
24. 一種用於與一使用者設備(UE)一起使用之一無線電存取網 路(RAN)的節點,該RAN節點經組態以:中止與該UE之一建立之RRC連接;此後可操作以在該RRC連接中止時,傳呼該UE或傳輸用於該UE之下行鏈路資料的通知或兩者;及儲存與該中止之RRC連接有關的RRC連接資料,該RRC連接資料可由該RAN節點使用以重新啟動該中止之RRC連接。 24. A radio access network for use with a User Equipment (UE) a node of a RAN (RAN) configured to: suspend an RRC connection established with one of the UEs; thereafter operable to page the UE or transmit a downlink for the UE when the RRC connection is aborted Notification of the data or both; and storing RRC connection data related to the suspended RRC connection, which may be used by the RAN node to restart the suspended RRC connection.
25. 如條項24闡述之RAN節點,其中RRC連接資料包含表示以下中之一或多者的資料:‧該建立之RRC連接中的無線電承載之組態;‧與該建立之RRC連接有關的安全性參數;‧暫時小區識別符;‧MAC組態;‧實體層組態。 25. The RAN node as set forth in clause 24, wherein the RRC connection profile comprises data representing one or more of: ‧ a configuration of a radio bearer in the established RRC connection; ‧ associated with the established RRC connection Security parameters; ‧ temporary cell identifier; ‧ MAC configuration; ‧ physical layer configuration
26. 如條項24或25闡述之RAN節點,其進一步包含標示該儲存之RRC連接資料以指示該RRC連接的該中止。 26. The RAN node as set forth in clause 24 or 25, further comprising an RRC connection profile indicating the store to indicate the suspension of the RRC connection.
27. 如條項24、25或26闡述之RAN節點,其進一步包含該RAN節點經組態以回應於符合一RRC連接中止準則而中止該建立之RRC連接。 27. The RAN node as set forth in clause 24, 25 or 26, further comprising the RAN node being configured to suspend the established RRC connection in response to complying with an RRC Connection Abort criterion.
28. 如條項27闡述之RAN節點,其中該RRC連接中止準則包含以下中之一或多者:‧該RAN節點處之一計時器的期滿;‧一訊息由該RAN節點傳輸至該UE以指示該建立之RRC連接的中止。 28. The RAN node as set forth in clause 27, wherein the RRC connection suspension criterion comprises one or more of: ‧ expiration of a timer at the RAN node; ‧ a message transmitted by the RAN node to the UE To indicate the suspension of the established RRC connection.
29. 如條項24至28中任一項闡述之RAN節點,其進一步包含該RAN節點經組態以回應於自該UE接收一RRC連接重新啟動請求訊息: 藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;回應於該RAN節點判定該中止之RRC連接仍有效,將一重新啟動請求完成訊息發送至該UE且此後經由該重新啟動之RRC連接回復與該UE之使用者平面資料傳送;及回應於該RAN節點判定該中止之RRC連接無效,將一重新啟動請求拒絕訊息發送至該UE。 29. The RAN node as set forth in any one of clauses 24 to 28, further comprising the RAN node being configured to receive an RRC Connection Restart Request message from the UE in response to: Determining whether the suspended RRC connection is still valid by referring to the stored RRC connection data; in response to the RAN node determining that the suspended RRC connection is still valid, transmitting a restart request completion message to the UE and thereafter restarting via the restart The RRC connection replies with the user plane data transmission of the UE; and in response to the RAN node determining that the suspended RRC connection is invalid, a restart request rejection message is sent to the UE.
30. 如條項29闡述之RAN節點,該RAN節點經組態以使得該RAN節點判定該中止之RRC連接是否仍有效包含以下中之至少一者:‧判定一計時器未期滿;及‧判定未釋放該RRC連接。 30. The RAN node as set forth in clause 29, the RAN node configured to cause the RAN node to determine whether the suspended RRC connection is still valid, comprising at least one of: determining that a timer has not expired; It is determined that the RRC connection is not released.
31. 如條項29或30闡述之RAN節點,其進一步包含作為該中止之RRC連接的重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該RAN回復該UE之行動性控制。 31. The RAN node as set forth in clause 29 or 30, further comprising, as a result of a restart of the RRC connection of the suspension or a normal RRC connection procedure for establishing a new RRC connection with the UE, the RAN replies to the action of the UE Sexual control.
32. 如條項24至31中任一項闡述之RAN節點,其中該RAN節點經組態以根據LTE或LTE進階協定與該UE通信。 32. The RAN node as set forth in any one of clauses 24 to 31, wherein the RAN node is configured to communicate with the UE in accordance with an LTE or LTE advanced protocol.
33. 如任一前述條項闡述之RAN節點,其中該RAN節點為一eNode B。 33. A RAN node as set forth in any preceding clause, wherein the RAN node is an eNode B.
34. 如條項24至33中任一項闡述之RAN節點,其中該RAN節點具有用於該UE之與一核心網路(CN)的一建立之使用者平面連接,其進一步包含當該RRC連接中止時維持該RAN節點與該CN之間的該建立之使用者平面連接。 34. The RAN node as set forth in any one of clauses 24 to 33, wherein the RAN node has an established user plane connection with the core network (CN) for the UE, further comprising when the RRC The established user plane connection between the RAN node and the CN is maintained when the connection is aborted.
35. 如條項34闡述之RAN節點,該RAN節點經組態以使得,當該RAN節點自該CN接收到用於該UE之下行鏈路資料時,該RAN節點緩衝該下行鏈路資料且傳呼該UE或傳輸用於該UE之下行鏈路資料的一通知。 35. The RAN node as set forth in clause 34, the RAN node configured to, when the RAN node receives downlink data for the UE from the CN, the RAN node buffers the downlink data and The UE is paged or a notification for the downlink data of the UE is transmitted.
36. 如條項35闡述之RAN節點,該RAN節點經組態以使得,回應於該RAN節點未自該UE接收到對該傳呼或對下行鏈路資料之該通知的回應,該RAN節點向該CN發送一傳呼升級訊息。 36. The RAN node as set forth in clause 35, the RAN node configured to, in response to the RAN node not receiving a response to the notification of the paging or downlink data from the UE, the RAN node The CN sends a paging upgrade message.
37. 如條項24至33中任一項闡述之RAN節點,其進一步包含該UE或該RAN節點發送一訊息以告知該核心網路(CN)中之任何節點該RRC連接經中止。 37. The RAN node as set forth in any one of clauses 24 to 33, further comprising the UE or the RAN node transmitting a message to inform any node in the core network (CN) that the RRC connection is aborted.
38. 如條項37闡述之RAN節點,其中該RAN節點具有用於該UE之與一CN的一建立之使用者平面連接,其進一步包含中止用於該UE之該CN與該RAN之間的該建立之使用者平面連接。 38. The RAN node as set forth in clause 37, wherein the RAN node has an established user plane connection with the CN for the UE, further comprising terminating between the CN for the UE and the RAN The established user plane connection.
39. 如條項38闡述之RAN節點,其中發送至該CN之該訊息包括該UE之一識別,該RAN節點或一或多個CN節點或兩者經組態以:中斷用於該UE之使用者平面資料經由該CN與該RAN節點之間的該建立之使用者平面連接的傳輸及接收;及儲存表示與該CN之該建立之使用者平面連接的CN-RAN連接資料,該CN-RAN連接資料可經使用以藉由作為一RRC連接重新啟動程序之結果而回復該CN與該RAN節點之間的該使用者平面連接來稍後回復至該UE之使用者平面資料的傳輸及接收。 39. The RAN node as set forth in clause 38, wherein the message sent to the CN includes identification by one of the UEs, the RAN node or one or more CN nodes or both configured to: interrupt for the UE Transmitting and receiving user plane data via the established user plane connection between the CN and the RAN node; and storing CN-RAN connection data indicating a user plane connection established with the CN, the CN- The RAN connection profile can be used to reply to the user plane connection between the CN and the RAN node as a result of an RRC connection restart procedure to later transmit and receive user plane data to the UE .
40. 一種無線通信系統,其包含如條項38或39闡述之一RAN節點及一CN,其中該CN經組態以使得當在該CN處接收到用於該UE之下行鏈路資料時,該CN之一節點緩衝該下行鏈路資料且該CN藉由該RAN之一或多個小區來起始該UE之該傳呼。 40. A wireless communication system comprising a RAN node and a CN as set forth in clause 38 or 39, wherein the CN is configured such that when the downlink data for the UE is received at the CN, One of the CN nodes buffers the downlink data and the CN initiates the paging of the UE by one or more cells of the RAN.
41. 一種包含如條項38或39闡述之一RAN節點及一CN的無線通信系統或一種如條項40闡述之無線通信系統,其進一步包含該無線通信系統經組態以使得該CN之一節點維持用於該UE之一有效性指示符,該有效性指示符可用於檢查該RRC連接之有效性以作為該RRC連接重新啟動程序之部分。 41. A wireless communication system comprising a RAN node and a CN as set forth in clause 38 or 39, or a wireless communication system as set forth in clause 40, further comprising the wireless communication system being configured to cause one of the CN The node maintains a validity indicator for the UE that can be used to check the validity of the RRC connection as part of the RRC Connection Restart procedure.
42. 如條項41闡述之無線通信系統,其中該有效性指示符之值取決於以下中之一或多者:使用者之位置;一計時器。 42. The wireless communication system as set forth in clause 41, wherein the value of the validity indicator is dependent on one or more of: a location of the user; a timer.
43. 一種RAN,其包括如條項24至39中任一項闡述之一RAN節點,其進一步包含:該RAN經組態以將該UE之行動性控制讓與該UE直至作為一RRC連接重新啟動程序或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該RAN回復該UE之行動性控制為止。 43. A RAN comprising one of the RAN nodes as set forth in any one of clauses 24 to 39, further comprising: the RAN being configured to delegate the UE's mobility control to the UE until reconnected as an RRC As a result of initiating the procedure or establishing a new RRC connection with the UE, the RAN replies to the UE's mobility control.
44. 如條項43闡述之RAN,其中當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該RAN接收告知該RAN此事件的一訊息。 44. The RAN as recited in clause 43, wherein the RAN receives a message informing the RAN of the event when the UE selects a cell of the RAN in which the suspended RRC connection indicated by the stored RRC connection profile is invalid .
45. 如條項44闡述之RAN,其中該RAN經組態以使得由該UE發送之該訊息由該RAN的接收使該RAN執行以下中之一或多者:釋放該無效之中止之RRC連接;起始與該UE之一新RRC連接;釋放該CN與RAN之間的用於該UE之一建立之使用者平面連接。 45. The RAN as set forth in clause 44, wherein the RAN is configured such that the message transmitted by the UE is caused by the RAN to cause the RAN to perform one or more of: releasing the invalid terminated RRC connection Starting with a new RRC connection with one of the UEs; releasing a user plane connection between the CN and the RAN for establishment of one of the UEs.
46. 一種具有指令之電腦程式產品,該等指令在由用於與一使用者設備(UE)一起使用之一無線電存取網路(RAN)之一節點的一處理器執行時使該RAN節點經組態以根據條項1至23中任一項闡述之一方法操作。 46. A computer program product with instructions for causing a RAN node to be executed by a processor for use in a node of a radio access network (RAN) for use with a user equipment (UE) It is configured to operate in accordance with one of the methods set forth in any one of clauses 1 to 23.
現將在以下編號條項中闡述與CN節點中止RRC連接之操作有關的本發明之額外態樣。 Additional aspects of the invention related to the operation of the CN node to suspend the RRC connection will now be set forth in the following numbered clauses.
1. 一種在用於與一無線電存取網路(RAN)之一節點一起使用的一核心網路(CN)之一節點中實施的方法,其包含回應於該CN接收指示該RAN與一使用者設備(UE)之間的一RRC連接經中止之一訊息:該CN節點中斷用於該UE之使用者平面資料經由該CN與該RAN節點之間的一建立之使用者平面CN-RAN連接的傳輸及接收;及儲存表示與該CN之該建立之使用者平面連接的CN-RAN連接資 料,該CN-RAN連接資料可經使用以藉由作為該RRC連接經重新啟動之結果而回復該CN與該RAN節點之間的該使用者平面連接來稍後回復至該UE之使用者平面資料的傳輸及接收。 CLAIMS 1. A method implemented in a node of a core network (CN) for use with a node of a radio access network (RAN), comprising receiving an indication of the RAN and a use in response to the CN receiving An RRC connection between the UEs (UE) is aborted by one of the messages: the CN node interrupts the user plane data for the UE via an established user plane CN-RAN connection between the CN and the RAN node Transmission and reception; and storing CN-RAN connection resources indicating the user plane connection established by the CN The CN-RAN connection profile can be used to later reply back to the UE plane of the UE by replying to the user plane connection between the CN and the RAN node as a result of the RRC connection being restarted. Transmission and reception of data.
2. 如條項1闡述之方法,其中當在該CN處接收到用於該UE之下行鏈路資料時,該方法進一步包含緩衝該CN之一節點中的該下行鏈路資料且藉由該RAN之一或多個小區來起始該UE之該傳呼。 2. The method as set forth in clause 1, wherein when receiving the downlink data for the UE at the CN, the method further comprises buffering the downlink data in one of the CN nodes and by using the One or more cells of the RAN initiate the paging of the UE.
3. 如條項1或2闡述之方法,其進一步包含回應於在該CN之一節點處接收到一CN-RAN連接重新啟動訊息,回復該CN與該RAN之間的使用者平面資料傳送。 3. The method as set forth in clause 1 or 2, further comprising responding to receiving a CN-RAN connection restart message at a node of the CN, replying to user plane data transfer between the CN and the RAN.
4. 如任一前述條項闡述之方法,其中該CN節點為經組態以根據LTE或LTE進階協定進行通信之一演進封包核心(EPC)的部分。 4. The method as set forth in any preceding clause, wherein the CN node is part of an evolved packet core (EPC) configured to communicate in accordance with an LTE or LTE advanced protocol.
5. 一種用於與一無線電存取網路(RAN)一起使用之一核心網路(CN)之一節點,該CN之該節點經組態以回應於該CN接收指示該RAN與一使用者設備(UE)之間的一RRC連接經中止之一訊息:中斷用於該UE之使用者平面資料經由該CN與該RAN節點之間的一建立之使用者平面CN-RAN連接的傳輸及接收;及儲存表示與該CN之該建立之使用者平面連接的CN-RAN連接資料,該CN-RAN連接資料可經使用以藉由作為該RRC連接經重新啟動之結果而回復該CN與該RAN節點之間的該使用者平面連接來稍後回復至該UE之使用者平面資料的傳輸及接收。 5. A node for a core network (CN) for use with a radio access network (RAN), the node of the CN being configured to receive an indication of the RAN and a user in response to the CN receiving An RRC connection between devices (UE) is terminated by one of the messages: interrupting transmission and reception of user plane data for the UE via an established user plane CN-RAN connection between the CN and the RAN node And storing CN-RAN connection data indicating the user plane connection established with the CN, the CN-RAN connection data may be used to reply to the CN and the RAN by being restarted as the RRC connection The user plane connection between the nodes to later reply to the transmission and reception of the user plane data of the UE.
6.如條項5闡述之CN節點,該CN節點經組態以使得當在該CN處接收到用於該UE之下行鏈路資料時,該CN節點緩衝該下行鏈路資料且藉由該RAN之一或多個小區來起始該UE之該傳呼。 6. The CN node as set forth in clause 5, the CN node being configured such that when receiving downlink data for the UE at the CN, the CN node buffers the downlink data and by the One or more cells of the RAN initiate the paging of the UE.
7. 如條項5或6闡述之CN節點,其進一步包含回應於在該CN之一節點處接收到一CN-RAN連接重新啟動訊息,該CN節點回復與該RAN之使用者平面資料傳送。 7. The CN node as set forth in clause 5 or 6, further comprising responding to receiving a CN-RAN connection restart message at a node of the CN, the CN node replying to user plane data transfer with the RAN.
8. 如條項5、6或7闡述之CN節點,其中該CN節點為經組態以根據LTE或LTE進階協定進行通信之一演進封包核心(EPC)的部分。 8. The CN node as set forth in clause 5, 6 or 7, wherein the CN node is part of an evolved packet core (EPC) configured to communicate in accordance with an LTE or LTE advanced protocol.
9. 一種具有指令之電腦程式產品,該等指令在由用於與一無線電存取網路(RAN)一起使用之一核心網路(CN)之一節點的一處理器執行時使該CN之該節點經組態以根據條項1至4中任一項闡述之一方法操作。 9. A computer program product with instructions for causing a CN to be executed by a processor for use in a node of a core network (CN) for use with a Radio Access Network (RAN) The node is configured to operate in accordance with one of the methods set forth in any one of clauses 1 through 4.
現將在以下編號條項中闡述與UE或RAN節點之用於存取中止之RRC連接的有效性及重新啟動中止之RRC連接之操作有關的本發明之額外態樣。 Additional aspects of the present invention relating to the validity of the UE or RAN node for accessing the suspended RRC connection and the operation of restarting the suspended RRC connection will now be set forth in the following numbered clauses.
1. 一種在用於與一使用者設備(UE)一起使用的一無線電存取網路(RAN)之一節點中實施的方法,該RAN節點與一UE之間的一建立之RRC連接已中止且與該中止之RRC連接有關的RRC連接資料已由該RAN節點儲存,該方法包含:在該RAN節點處自該UE接收一RRC連接重新啟動請求訊息;藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;及回應於該RAN節點判定該中止之RRC連接仍有效,該RAN節點將一重新啟動請求完成訊息發送至該UE且此後經由該重新啟動之RRC連接回復與該UE之使用者平面資料傳送;或回應於該RAN節點判定該中止之RRC連接無效,該RAN節點將一重新啟動請求拒絕訊息發送至該RAN。 CLAIMS 1. A method implemented in a node of a Radio Access Network (RAN) for use with a User Equipment (UE), an established RRC connection between the RAN node and a UE has been discontinued And the RRC connection data related to the suspended RRC connection is stored by the RAN node, the method includes: receiving an RRC connection restart request message from the UE at the RAN node; determining by referring to the stored RRC connection data Whether the suspended RRC connection is still valid; and in response to the RAN node determining that the suspended RRC connection is still valid, the RAN node sends a restart request completion message to the UE and thereafter replies with the restarted RRC connection The user plane data transmission of the UE; or in response to the RAN node determining that the suspended RRC connection is invalid, the RAN node sends a restart request rejection message to the RAN.
2. 如條項1闡述之方法,其中該RAN節點判定該中止之RRC連接是否仍有效包含以下中之至少一者:‧判定一計時器未期滿;及‧判定未釋放該RRC連接。 2. The method as set forth in clause 1, wherein the RAN node determines whether the suspended RRC connection is still valid, comprising at least one of: ‧ determining that a timer has not expired; and ‧ determining that the RRC connection is not released.
3. 如條項1或2闡述之方法,其進一步包含作為該中止之RRC連 接的重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該RAN自該UE回復該UE之行動性控制。 3. The method as set forth in clause 1 or 2, further comprising as an RRC link to the suspension As a result of a restart or a normal RRC connection procedure with the UE establishing a new RRC connection, the RAN replies to the UE's mobility control from the UE.
4. 如任一前述條項闡述之方法,其中該或該等RAN節點經組態以根據LTE或LTE進階協定與該UE通信。 4. The method as set forth in any preceding clause, wherein the or the RAN node is configured to communicate with the UE in accordance with an LTE or LTE advanced protocol.
5. 如任一前述條項闡述之方法,其中該或該等RAN節點為(若干)eNode B。 5. The method as set forth in any preceding clause, wherein the or the RAN node is (several) eNode B.
6. 一種用於與一使用者設備(UE)一起使用之一無線電存取網路(RAN)之一節點,該RAN節點經組態以使得當該RAN節點與一UE之間的一建立之RRC連接已中止且與該中止之RRC連接有關的RRC連接資料已由該RAN節點儲存時,回應於在該RAN節點處自該UE接收一RRC連接重新啟動請求訊息:該RAN節點藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;回應於該RAN節點判定該中止之RRC連接仍有效,該RAN節點將一重新啟動請求完成訊息發送至該UE且此後經由該重新啟動之RRC連接回復與該UE之使用者平面資料傳送;及回應於該RAN節點判定該中止之RRC連接無效,該RAN節點將一重新啟動請求拒絕訊息發送至該RAN。 6. A node for one of a Radio Access Network (RAN) for use with a User Equipment (UE), the RAN node being configured such that when the RAN node is established with a UE When the RRC connection has been suspended and the RRC connection data related to the suspended RRC connection has been stored by the RAN node, in response to receiving an RRC connection restart request message from the UE at the RAN node: the RAN node refers to the The stored RRC connection data determines whether the suspended RRC connection is still valid; in response to the RAN node determining that the suspended RRC connection is still valid, the RAN node sends a restart request completion message to the UE and thereafter via the restart The RRC connection replies with the user plane data transmission of the UE; and in response to the RAN node determining that the suspended RRC connection is invalid, the RAN node sends a restart request rejection message to the RAN.
7. 如條項6闡述之RAN節點,其進一步包含該RAN節點經組態以藉由該RAN節點執行以下操作之至少一者判定該中止之RRC連接是否仍有效:‧判定一計時器未期滿;及‧判定未釋放該RRC連接。 7. The RAN node as set forth in clause 6, further comprising the RAN node configured to determine, by the RAN node, whether the suspended RRC connection is still valid by at least one of: ??? Full; and ‧ determines that the RRC connection is not released.
8. 一種RAN,其包含如條項5或6闡述之一RAN節點,該RAN經組態以作為該中止之RRC連接的重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,自該UE回復該UE之行動性控制。 8. A RAN comprising one of the RAN nodes as set forth in clause 5 or 6, the RAN being configured to act as a restart of the suspended RRC connection or to establish a new RRC connection with the UE as a normal RRC connection procedure As a result, the UE's mobility control is replied to from the UE.
9. 如條項5至8中任一項闡述之RAN節點,該或該等RAN節點經組態以根據LTE或LTE進階協定與該UE通信。 9. The RAN node as set forth in any one of clauses 5 to 8, the or the RAN node being configured to communicate with the UE in accordance with an LTE or LTE advanced protocol.
10. 如條項5至9中任一項闡述之RAN節點,其中該或該等RAN節點為(若干)eNode B。 10. The RAN node as set forth in any one of clauses 5 to 9, wherein the or the RAN node is (several) eNode B.
11. 一種具有指令之電腦程式產品,該等指令在由用於與一使用者設備(UE)一起使用之一無線電存取網路(RAN)之一節點的一處理器執行時使該RAN節點經組態以根據條項1至5中任一項闡述之一方法操作。 11. A computer program product with instructions for causing a RAN node to be executed by a processor for use in a node of a radio access network (RAN) for use with a user equipment (UE) It is configured to operate in accordance with one of the methods set forth in any one of clauses 1 to 5.
12. 一種在用於與一無線電存取網路(RAN)一起使用的一使用者設備(UE)中實施的方法,該RAN之一節點與該UE之間的一建立之RRC連接已中止且與該中止之RRC連接有關的RRC連接資料已由該UE儲存,該方法包含:該UE藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;及回應於該UE判定該中止之RRC連接仍有效,該UE:將一RRC連接重新啟動請求訊息傳輸至該RAN節點;及回應於自該RAN節點接收到一RRC連接重新啟動接受訊息,該UE此後經由該重新啟動之RRC連接回復與該RAN節點之使用者平面資料傳送,或回應於自該RAN節點接收到一RRC連接重新啟動拒絕訊息,該UE釋放該RRC連接;或回應於該UE判定該中止之RRC連接無效,該UE釋放該RRC連接。 12. A method implemented in a User Equipment (UE) for use with a Radio Access Network (RAN), an established RRC connection between a node of the RAN and the UE has been suspended and The RRC connection data related to the suspended RRC connection has been stored by the UE, the method includes: determining, by the UE, whether the suspended RRC connection is still valid by referring to the stored RRC connection data; and determining, in response to the UE, the suspension The RRC connection is still valid, the UE: transmitting an RRC connection restart request message to the RAN node; and in response to receiving an RRC connection restart accept message from the RAN node, the UE thereafter connects via the restarted RRC Responding to the user plane data transmission with the RAN node, or in response to receiving an RRC connection restart rejection message from the RAN node, the UE releases the RRC connection; or in response to the UE determining that the suspended RRC connection is invalid, The UE releases the RRC connection.
13. 如條項12闡述之方法,其中該UE判定該中止之RRC連接是否仍有效包含以下中之至少一者:‧判定該UE當前是否在其中由該儲存之RRC連接資料表示的該中止之RRC連接仍有效的該RAN之一小區中;及‧判定一計時器是否未期滿。 13. The method as set forth in clause 12, wherein the UE determines whether the suspended RRC connection is still valid, comprising at least one of: determining whether the UE is currently in the abort indicated by the stored RRC connection profile. The RRC connection is still in one of the cells of the RAN; and ‧ determines if a timer has not expired.
14. 如條項12或13闡述之方法,其進一步包含回應於接收到RRC連接重新啟動拒絕訊息或該UE判定該中止之RRC連接無效,該UE亦進入閒置模式且此後起始一正常RRC連接建立程序以與該RAN建立一新RRC連接。 14. The method as recited in clause 12 or 13, further comprising, in response to receiving the RRC Connection Restart Reject message or the UE determining that the suspended RRC connection is invalid, the UE also enters an idle mode and thereafter initiates a normal RRC connection A procedure is established to establish a new RRC connection with the RAN.
15. 如條項12、13或14闡述之方法,其進一步包含作為該中止之RRC連接的重新啟動或與該RAN建立一新RRC連接之一正常RRC連接程序的結果,該UE將該UE之行動性控制讓與該RAN。 15. The method as set forth in clause 12, 13 or 14, further comprising as a result of a restart of the suspended RRC connection or a normal RRC connection procedure for establishing a new RRC connection with the RAN, the UE The mobility control gives way to the RAN.
16. 如條項12至15中任一項闡述之方法,其中該UE經組態以根據LTE或LTE進階協定與該RAN通信。 16. The method as set forth in any one of clauses 12 to 15, wherein the UE is configured to communicate with the RAN according to an LTE or LTE advanced protocol.
17. 一種用於與一無線電存取網路(RAN)一起使用之使用者設備(UE),該UE經組態以使得當該RAN之一節點與該UE之間的一建立之RRC連接已中止且表示與該中止之RRC連接有關的組態資訊及狀態資訊之RRC連接資料已由該UE儲存時:該UE藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;回應於該UE判定該中止之RRC連接仍有效,該UE將一RRC連接重新啟動請求訊息傳輸至該RAN節點;及回應於自該RAN節點接收到一RRC連接重新啟動接受訊息,該UE此後經由該重新啟動之RRC連接回復與該RAN節點之使用者平面資料傳送,或回應於自該RAN節點接收到一RRC連接重新啟動拒絕訊息,該UE釋放該RRC連接;及回應於該UE判定該中止之RRC連接無效,該UE釋放該RRC連接。 17. A User Equipment (UE) for use with a Radio Access Network (RAN) configured to enable an established RRC connection between a node of the RAN and the UE Aborting and indicating that the RRC connection data of the configuration information and status information related to the suspended RRC connection has been stored by the UE: the UE determines whether the suspended RRC connection is still valid by referring to the stored RRC connection data; After the UE determines that the suspended RRC connection is still valid, the UE transmits an RRC Connection Restart Request message to the RAN node; and in response to receiving an RRC Connection Restart Accept message from the RAN node, the UE thereafter passes the Resending the RRC connection reply with the user plane data transmission of the RAN node, or in response to receiving an RRC connection restart rejection message from the RAN node, the UE releases the RRC connection; and in response to the UE determining the suspension The RRC connection is invalid, and the UE releases the RRC connection.
18. 如條項17闡述之UE,其進一步包含該UE經組態以藉由該UE執行以下操作之至少一者判定該中止之RRC連接是否仍有效:‧判定該UE當前是否在其中由該儲存之RRC連接資料表示的該中止之RRC連接仍有效的該RAN之一小區中;及 ‧判定一計時器是否未期滿。 18. The UE as set forth in clause 17, further comprising the UE being configured to determine, by the UE, whether the suspended RRC connection is still valid by at least one of: determining whether the UE is currently in the The stored RRC connection data indicates that the suspended RRC connection is still valid in one of the RAN cells; and ‧ Determine if a timer has not expired.
19. 如條項17或18闡述之UE,其進一步包含該UE經組態以使得,回應於接收到RRC連接重新啟動拒絕訊息或該UE判定該中止之RRC連接無效,該UE亦進入閒置模式且此後起始一正常RRC連接建立程序以與該RAN建立一新RRC連接。 19. The UE as set forth in clause 17 or 18, further comprising the UE being configured such that in response to receiving the RRC Connection Restart Reject message or the UE determining that the suspended RRC connection is invalid, the UE also enters an idle mode And then a normal RRC connection setup procedure is initiated to establish a new RRC connection with the RAN.
20. 如條項17、18或19闡述之UE,其進一步包含該UE經組態以作為該中止之RRC連接的該重新啟動或與該RAN建立一新RRC連接之一正常RRC連接程序的結果,將該UE之行動性控制讓與該RAN。 20. The UE as set forth in clause 17, 18 or 19, further comprising a result of the UE being configured to act as a restart of the aborted RRC connection or to establish a new RRC connection with the RAN as a result of a normal RRC connection procedure The mobility control of the UE is given to the RAN.
21. 如條項17至20中任一項闡述之UE,其中該UE經組態以根據LTE或LTE進階協定與該RAN通信。 21. The UE as set forth in any one of clauses 17 to 20, wherein the UE is configured to communicate with the RAN according to an LTE or LTE advanced protocol.
22. 一種具有指令之電腦程式產品,該等指令在由用於與一無線電存取網路(RAN)連接一起使用之使用者設備(UE)的一處理器執行時使該UE經組態以根據如條項12至16中任一項闡述之一方法操作。 22. A computer program product with instructions for causing a UE to be configured when executed by a processor of a User Equipment (UE) for use with a Radio Access Network (RAN) connection The method operates according to one of the methods as set forth in any one of clauses 12 to 16.
現將在以下編號條項中闡述與CN節點或RAN節點之用於在RRC連接中止時處置下行鏈路資料之操作有關的本發明之額外態樣。 Additional aspects of the present invention relating to the operation of the CN node or RAN node for handling downlink data when the RRC connection is aborted will now be set forth in the following numbered clauses.
1. 一種在用於與一使用者設備(UE)一起使用的一無線電存取網路(RAN)之一節點中實施的方法,一RAN節點與一UE之間的一建立之RRC連接已中止且與該中止之RRC連接有關的一RRC連接資料已由該RAN節點儲存,該方法包含:該RAN節點接收用於該UE之下行鏈路資料;該RAN節點緩衝該下行鏈路資料;及該RAN節點傳呼該UE或傳輸用於該UE之下行鏈路資料的通知。 CLAIMS 1. A method implemented in a node of a Radio Access Network (RAN) for use with a User Equipment (UE), an established RRC connection between a RAN node and a UE has been discontinued And an RRC connection data related to the suspended RRC connection is stored by the RAN node, the method comprising: the RAN node receiving downlink data for the UE; the RAN node buffering the downlink data; The RAN node pages the UE or transmits a notification for the downlink data of the UE.
2. 如條項1闡述之方法,其中回應於該RAN節點未自該UE接收到對該傳呼或對下行鏈路資料之該通知的回應,該RAN節點向該CN發送一傳呼升級訊息。 2. The method as set forth in clause 1, wherein the RAN node sends a paging upgrade message to the CN in response to the RAN node not receiving a response to the paging or the notification of the downlink data from the UE.
3. 如條項2闡述之方法,其進一步包含: 在該RAN節點處自該UE接收一RRC連接重新啟動請求訊息;藉由參考該儲存之RRC連接資料判定該中止之RRC連接是否仍有效;及回應於該RAN節點判定該中止之RRC連接仍有效,該RAN節點將一重新啟動請求完成訊息發送至該UE且此後經由該重新啟動之RRC連接回復與該UE之使用者平面資料傳送;或回應於該RAN節點判定該中止之RRC連接無效,該RAN節點將一重新啟動請求拒絕訊息發送至該RAN。 3. The method as set forth in clause 2, further comprising: Receiving, at the RAN node, an RRC connection restart request message from the UE; determining whether the suspended RRC connection is still valid by referring to the stored RRC connection data; and responding to the RAN node determining that the suspended RRC connection is still valid The RAN node sends a restart request completion message to the UE and thereafter replies to the UE plane data transmission with the UE via the restarted RRC connection; or in response to the RAN node determining that the suspended RRC connection is invalid, The RAN node sends a Restart Request Reject message to the RAN.
4. 如任一前述條項闡述之方法,其中該RAN節點經組態以根據LTE或LTE進階協定與該UE通信。 4. The method as set forth in any preceding clause, wherein the RAN node is configured to communicate with the UE in accordance with an LTE or LTE advanced protocol.
5. 如任一前述條項闡述之方法,其中該RAN節點為一eNode B。 5. The method as set forth in any preceding clause, wherein the RAN node is an eNode B.
6. 一種用於與一使用者設備(UE)一起使用之一無線電存取網路(RAN)之一節點,該RAN節點經組態以使得當該RAN節點與一UE之間的一建立之RRC連接已中止且與該中止之RRC連接有關的RRC連接資料已由該RAN節點儲存時,回應於該RAN節點接收用於該UE之下行鏈路資料:該RAN節點緩衝該下行鏈路資料;及該RAN節點傳呼該UE或傳輸給出下行鏈路資料之通知的一訊息。 6. A node for one of a Radio Access Network (RAN) for use with a User Equipment (UE), the RAN node being configured such that when the RAN node is established with a UE When the RRC connection has been suspended and the RRC connection data related to the suspended RRC connection has been stored by the RAN node, the RAN node receives the downlink data for the UE in response to the RAN node: the RAN node buffers the downlink data; And the RAN node replies to the UE or transmits a message that gives a notification of downlink data.
7. 如條項6闡述之RAN節點,該RAN節點經組態以使得,回應於該RAN節點未自該UE接收到對該傳呼訊息或對給出下行鏈路資料之通知之該訊息的回應,該RAN節點向該CN發送一傳呼升級訊息。 7. The RAN node as set forth in clause 6, the RAN node being configured to, in response to the RAN node not receiving a response to the paging message or the message giving notification of downlink information from the UE The RAN node sends a paging upgrade message to the CN.
8. 如條項6闡述之RAN節點,其進一步包含該RAN節點經組態以使得,回應於該RAN節點自該UE接收一RRC連接重新啟動請求訊息:該RAN節點藉由參考該儲存之RRC連接資料判定該中止之RRC連 接是否仍有效;回應於該RAN節點判定該中止之RRC連接仍有效,該RAN節點將一重新啟動請求完成訊息發送至該UE且此後經由該重新啟動之RRC連接回復與該UE之使用者平面資料傳送;及回應於該RAN節點判定該中止之RRC連接無效,該RAN節點將一重新啟動請求拒絕訊息發送至該RAN。 8. The RAN node as set forth in clause 6, further comprising the RAN node configured to, in response to the RAN node receiving an RRC Connection Restart Request message from the UE: the RAN node by reference to the stored RRC Connection data to determine the RRC connection of the suspension Whether the connection is still valid; in response to the RAN node determining that the suspended RRC connection is still valid, the RAN node sends a restart request completion message to the UE and thereafter replies with the user plane of the UE via the restarted RRC connection. Data transmission; and in response to the RAN node determining that the suspended RRC connection is invalid, the RAN node sends a restart request rejection message to the RAN.
9. 如條項6至8中任一項闡述之RAN節點,其中該RAN節點經組態以根據LTE或LTE進階協定與該UE通信。 9. The RAN node as set forth in any one of clauses 6 to 8, wherein the RAN node is configured to communicate with the UE in accordance with an LTE or LTE advanced protocol.
10. 如條項6至9中任一項闡述之方法,其中該RAN節點為一eNode B。 10. The method as set forth in any one of clauses 6 to 9, wherein the RAN node is an eNode B.
11. 一種具有指令之電腦程式產品,該等指令在由用於與一使用者設備(UE)一起使用之一無線電存取網路(RAN)之一節點的一處理器執行時使該RAN節點經組態以根據條項1至5中任一項闡述之一方法操作。 11. A computer program product with instructions for causing a RAN node to be executed by a processor for use in a node of a radio access network (RAN) for use with a user equipment (UE) It is configured to operate in accordance with one of the methods set forth in any one of clauses 1 to 5.
12. 一種在用於與一無線電存取網路(RAN)之一節點一起使用的一核心網路(CN)之一節點中實施的方法,回應於該CN接收指示該RAN與一使用者設備(UE)之間的一RRC連接經中止之一訊息,已中斷用於該UE之使用者平面資料經由該CN與該RAN節點之間的用於該UE之一建立之使用者平面CN-RAN連接的傳輸及接收,且已儲存表示該CN與該RAN之間的現存使用者平面連接之CN-RAN連接資料,該方法包含:接收用於該UE之下行鏈路資料;該CN節點緩衝該下行鏈路資料;該CN節點藉由該RAN之一或多個小區起始該UE之該傳呼。 12. A method implemented in a node of a core network (CN) for use with a node of a radio access network (RAN), in response to the CN receiving an indication of the RAN and a user equipment An RRC connection between (UE) is terminated by one of the messages, the user plane data for the UE has been interrupted via the user plane CN-RAN established between the CN and the RAN node for one of the UEs The transmission and reception of the connection, and storing the CN-RAN connection data indicating the existing user plane connection between the CN and the RAN, the method comprising: receiving downlink data for the UE; the CN node buffering the Downlink data; the CN node initiates the paging of the UE by one or more cells of the RAN.
13. 如條項12闡述之方法,其進一步包含該CN之一節點維持用於該UE之一有效性指示符,該有效性指示符可用於檢查該RRC連接 之有效性以作為一RRC連接重新啟動程序之部分。 13. The method as set forth in clause 12, further comprising maintaining, by the one of the CN nodes, a validity indicator for the UE, the validity indicator being usable to check the RRC connection The validity is part of the restart procedure as an RRC connection.
14. 如條項13闡述之方法,其中該有效性指示符之值取決於以下中之一或多者:使用者之位置;一計時器。 14. The method as set forth in clause 13, wherein the value of the validity indicator is dependent on one or more of: a location of the user; a timer.
15. 如條項12至14中任一項闡述之方法,其中該CN節點為經組態以根據LTE或LTE進階協定進行通信之一演進封包核心(EPC)的部分。 15. The method as set forth in any one of clauses 12 to 14, wherein the CN node is part of an evolved packet core (EPC) configured to communicate in accordance with an LTE or LTE advanced protocol.
16. 一種用於與一無線電存取網路(RAN)之一節點一起使用的一核心網路(CN)之節點,該CN節點經組態以使得,當回應於該CN接收指示該RAN與一使用者設備(UE)之間的一RRC連接經中止之一訊息,已中斷用於該UE之使用者平面資料經由該CN與該RAN節點之間的用於該UE之一建立之使用者平面CN-RAN連接的傳輸及接收,且已儲存表示該CN與該RAN之間的現存使用者平面連接之CN-RAN連接資料時,回應於接收用於該UE之下行鏈路資料:該CN節點緩衝該下行鏈路資料;該CN節點藉由該RAN之一或多個小區起始該UE之該傳呼。 16. A node for a core network (CN) for use with a node of a radio access network (RAN), the CN node being configured such that when the RAN is received in response to the CN indication An RRC connection between a user equipment (UE) is suspended by one of the messages, and the user plane data for the UE has been interrupted via the CN and the RAN node for the establishment of one of the UEs In response to transmission and reception of a planar CN-RAN connection, and storing CN-RAN connection data indicating an existing user plane connection between the CN and the RAN, in response to receiving downlink data for the UE: the CN The node buffers the downlink data; the CN node initiates the paging of the UE by one or more cells of the RAN.
17. 如條項16闡述之CN節點,其進一步包含該CN之一節點維持用於該UE之一有效性指示符,該有效性指示符可用於檢查該RRC連接之有效性以作為一RRC連接重新啟動程序之部分。 17. The CN node as set forth in clause 16, further comprising one of the CN nodes maintaining a validity indicator for the UE, the validity indicator being usable to check validity of the RRC connection as an RRC connection Restart the part of the program.
18. 如條項17闡述之CN節點,其中該有效性指示符之值取決於以下中之一或多者:使用者之位置;一計時器。 18. The CN node as set forth in clause 17, wherein the value of the validity indicator depends on one or more of: a location of the user; a timer.
19. 如條項16至18中任一項闡述之CN節點,其中該CN節點為經組態以根據LTE或LTE進階協定進行通信之一演進封包核心(EPC)的部分。 19. The CN node as set forth in any one of clauses 16 to 18, wherein the CN node is part of an evolved packet core (EPC) configured to communicate in accordance with an LTE or LTE advanced protocol.
20. 一種具有指令之電腦程式產品,該等指令在由用於經由一CN-RAN連接與一無線電存取網路(RAN)通信之一核心網路(CN)之一節點的一處理器執行時使該CN之該節點經組態以根據條項12至15中 任一項闡述之一方法操作。 20. A computer program product with instructions for execution by a processor for a node of a core network (CN) for communicating with a Radio Access Network (RAN) via a CN-RAN connection Causing the node of the CN to be configured according to clauses 12 through 15 Either one of the method operations.
現將在以下編號條項中闡述與UE之用於在RRC連接中止時處置UE之行動性之操作有關的本發明之額外態樣。 Additional aspects of the present invention related to the UE's operation for handling the UE's mobility when the RRC connection is aborted will now be set forth in the following numbered clauses.
1. 一種在用於與一無線電存取網路(RAN)一起使用之一使用者設備(UE)中實施的方法,該RAN之一節點與該UE之間的一建立之RRC連接已中止且與該中止之RRC連接有關的RRC連接資料已由該UE儲存,該方法包含:該UE在該RRC連接中止之時間期間藉由小區選擇或重新選擇程序執行自主行動性控制,且作為該中止之RRC連接的重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該UE將該UE之行動性控制讓與該RAN。 CLAIMS 1. A method implemented in a User Equipment (UE) for use with a Radio Access Network (RAN), an established RRC connection between a node of the RAN and the UE has been suspended and The RRC connection data related to the suspended RRC connection has been stored by the UE, and the method includes: the UE performing autonomous mobility control by a cell selection or reselection procedure during the time when the RRC connection is suspended, and as the suspension As a result of the restart of the RRC connection or the establishment of a new RRC connection with the UE, a normal RRC connection procedure, the UE grants the UE's mobility control to the RAN.
2. 如條項1闡述之方法,其中當該UE選擇其中由該RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE繼續儲存該RRC連接資料且省略執行告知該CN該UE之該行動性的與該CN之任何通信。 2. The method as set forth in clause 1, wherein when the UE selects one of the RANs in which the suspended RRC connection indicated by the RRC connection data is invalid, the UE continues to store the RRC connection data and omits execution to notify the CN The UE's mobility of any communication with the CN.
3. 如條項1闡述之方法,其中當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE傳輸告知該RAN或一核心網路(CN)此事件的一訊息。 3. The method as recited in clause 1, wherein the UE transmits a notification to the RAN or a core network when the UE selects one of the RANs in which the suspended RRC connection indicated by the stored RRC connection profile is invalid. (CN) A message for this event.
4. 如條項3闡述之方法,其中作為選擇其中由該儲存之RRC連接資料表示的該RRC連接無效的該RAN之一小區之結果,該UE亦釋放該中止之RRC連接且進入閒置模式。 4. The method as set forth in clause 3, wherein the UE also releases the suspended RRC connection and enters an idle mode as a result of selecting one of the RANs in which the RRC connection is invalidated by the stored RRC connection data.
5. 如任一前述條項闡述之方法,其中該UE經組態以根據LTE或LTE進階協定與該RAN通信。 5. The method as set forth in any preceding clause, wherein the UE is configured to communicate with the RAN according to an LTE or LTE advanced protocol.
6. 一種用於與一無線電存取網路(RAN)通信之使用者設備(UE),該UE經組態以使得當該RAN之一節點與該UE之間的一建立之RRC連接已中止且與該中止之RRC連接有關的RRC連接資料已由該UE儲存 時:該UE在該RRC連接中止之時間期間藉由小區選擇或重新選擇程序執行自主行動性控制;及作為該中止之RRC連接的重新啟動或與該UE建立一新RRC連接之一正常RRC連接程序的結果,該UE將該UE之行動性控制讓與該RAN。 6. A User Equipment (UE) for communicating with a Radio Access Network (RAN) configured to suspend an established RRC connection between a node of the RAN and the UE And the RRC connection data related to the suspended RRC connection has been stored by the UE Time: the UE performs autonomous mobility control by a cell selection or reselection procedure during the time when the RRC connection is suspended; and a normal RRC connection as a restart of the suspended RRC connection or establishing a new RRC connection with the UE As a result of the procedure, the UE grants the UE's mobility control to the RAN.
7. 如條項6闡述之UE,其進一步包含該UE經組態以使得,當該UE選擇其中由該RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE繼續儲存該RRC連接資料且省略執行告知該CN該UE之該行動性的與該CN之任何通信。 7. The UE as set forth in clause 6, further comprising the UE configured to, when the UE selects one of the RANs in which the suspended RRC connection indicated by the RRC connection profile is invalid, the UE continues The RRC connection profile is stored and any communication with the CN that informs the CN of the UE of the mobility is omitted.
8. 如條項6闡述之UE,其進一步包含該UE經組態以使得,當該UE選擇其中由該儲存之RRC連接資料表示的該中止之RRC連接無效的該RAN之一小區時,該UE傳輸告知該RAN或一核心網路(CN)此事件的一訊息。 8. The UE as set forth in clause 6, further comprising the UE configured to, when the UE selects one of the RANs in which the suspended RRC connection indicated by the stored RRC connection profile is invalid, The UE transmits a message informing the RAN or a core network (CN) of this event.
9. 如條項8闡述之UE,其進一步包含該UE經組態以使得,作為選擇其中由該儲存之RRC連接資料表示的該RRC連接無效的該RAN之一小區之結果,該UE亦釋放該中止之RRC連接且進入閒置模式。 9. The UE as set forth in clause 8, further comprising the UE being configured such that, as a result of selecting a cell of the RAN in which the RRC connection indicated by the stored RRC connection profile is invalid, the UE is also released The suspended RRC is connected and enters the idle mode.
10. 如條項6至9中任一項闡述之UE,其中該UE經組態以根據LTE或LTE進階協定與該RAN通信。 10. The UE as set forth in any one of clauses 6 to 9, wherein the UE is configured to communicate with the RAN according to an LTE or LTE advanced protocol.
11. 一種具有指令之電腦程式產品,該等指令在由用於與一無線電存取網路(RAN)連接一起使用之使用者設備(UE)的一處理器執行時使該UE經組態以根據如條項1至5中任一項闡述之一方法操作。 11. A computer program product with instructions for causing a UE to be configured when executed by a processor of a User Equipment (UE) for use with a Radio Access Network (RAN) connection The method operates according to one of the methods as set forth in any one of clauses 1 to 5.
101‧‧‧使用者設備(UE) 101‧‧‧User Equipment (UE)
102‧‧‧無線電存取網路(RAN) 102‧‧‧Radio Access Network (RAN)
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EP12161620.5A EP2645803B1 (en) | 2012-03-27 | 2012-03-27 | Enb storing rrc configuration information at another network component |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI577201B (en) * | 2014-01-31 | 2017-04-01 | 英特爾智財公司 | Assistance information for evolved node b (enb) parameter tuning |
WO2018184490A1 (en) * | 2017-04-07 | 2018-10-11 | 中兴通讯股份有限公司 | Uplink data transmission method, apparatus and device and computer storage medium |
CN113163374A (en) * | 2015-02-09 | 2021-07-23 | 英特尔公司 | Evolved node B, user equipment and method for transitioning between idle mode and connected mode |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2922364A1 (en) * | 2014-03-21 | 2015-09-23 | Alcatel Lucent | Dual Connectivity Network |
US11672044B2 (en) | 2015-11-17 | 2023-06-06 | Telefonaktiebolaget Lm Ericsson (Publ) | UE identifier in RRC resume |
DK3378273T3 (en) * | 2015-11-17 | 2022-02-21 | Ericsson Telefon Ab L M | Methods and apparatus for performing a resumption procedure |
WO2017113408A1 (en) | 2015-12-31 | 2017-07-06 | 华为技术有限公司 | Mobility management method, user equipment, storage node, and base station |
EP4333549A3 (en) * | 2015-12-31 | 2024-06-05 | Huawei Technologies Co., Ltd. | Mobility management method, terminal, and base station |
EP3261404A1 (en) * | 2016-06-01 | 2017-12-27 | HTC Corporation | Device and method of handling radio resource control connection (rrc) resume procedure |
US11140662B2 (en) | 2016-08-11 | 2021-10-05 | Sony Corporation | Infrastructure equipment for determining whether a communications device is within a radio coverage area |
CN108924963B (en) * | 2017-03-23 | 2024-03-01 | 中兴通讯股份有限公司 | Method, terminal and base station for keeping air interface state synchronization |
BR112019019943A2 (en) | 2017-04-11 | 2020-04-28 | Ipcom Gmbh & Co Kg | method for managing a connection from a user equipment device |
EP3831158B1 (en) * | 2018-11-14 | 2024-07-24 | Nokia Technologies Oy | Apparatus, method, and computer program for connection manegement |
EP3972382A4 (en) * | 2019-05-13 | 2022-12-28 | Beijing Xiaomi Mobile Software Co., Ltd. | Connection processing method and apparatus, and medium |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101675678A (en) * | 2007-03-12 | 2010-03-17 | 诺基亚公司 | Apparatus, method and computer program product providing auxillary handover command |
JP4625123B2 (en) * | 2008-12-11 | 2011-02-02 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication method and radio base station |
-
2013
- 2013-03-26 WO PCT/GB2013/050791 patent/WO2013144613A1/en active Application Filing
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI577201B (en) * | 2014-01-31 | 2017-04-01 | 英特爾智財公司 | Assistance information for evolved node b (enb) parameter tuning |
US9681342B2 (en) | 2014-01-31 | 2017-06-13 | Intel IP Corporation | Assistance information for evolved node B (eNB) parameter tuning |
US10257754B2 (en) | 2014-01-31 | 2019-04-09 | Intel IP Corporation | Assistance information for evolved Node B (eNB) parameter tuning |
CN113163374A (en) * | 2015-02-09 | 2021-07-23 | 英特尔公司 | Evolved node B, user equipment and method for transitioning between idle mode and connected mode |
WO2018184490A1 (en) * | 2017-04-07 | 2018-10-11 | 中兴通讯股份有限公司 | Uplink data transmission method, apparatus and device and computer storage medium |
CN108924904A (en) * | 2017-04-07 | 2018-11-30 | 中兴通讯股份有限公司 | A kind of transmission method of upstream data, device and equipment |
CN108924904B (en) * | 2017-04-07 | 2022-10-21 | 中兴通讯股份有限公司 | Uplink data transmission method, device and equipment |
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