WO2012025001A1 - 一种优先业务的处理方法和系统 - Google Patents

一种优先业务的处理方法和系统 Download PDF

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Publication number
WO2012025001A1
WO2012025001A1 PCT/CN2011/077664 CN2011077664W WO2012025001A1 WO 2012025001 A1 WO2012025001 A1 WO 2012025001A1 CN 2011077664 W CN2011077664 W CN 2011077664W WO 2012025001 A1 WO2012025001 A1 WO 2012025001A1
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WIPO (PCT)
Prior art keywords
service
priority
request message
utran
geran
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PCT/CN2011/077664
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English (en)
French (fr)
Inventor
朱春晖
杜忠达
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/817,768 priority Critical patent/US8903353B2/en
Priority to JP2013525122A priority patent/JP5805193B2/ja
Priority to EP11819376.2A priority patent/EP2600645A4/en
Publication of WO2012025001A1 publication Critical patent/WO2012025001A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for processing a priority service. Background technique
  • Multimedia priority service refers to the use of public networks to initiate priority services by government departments (such as national security, emergency services, etc.). At this time, in some special occasions, priority is needed to support the service, such as on the wireless side or core of the communication network. When congestion occurs on the network side.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • the E-UTRAN is composed of an evolved Node B (eNB), and the Mobile Switching Center (MSC)/Visitor Location Register (VLR) is received by the MSC and the VLR.
  • the incoming call request sends a paging circuit (CS, Circuit Switched) paging request message through an interface between the mobility management entity (MME, Mobility Management Entity) and the MSC/VLR, and the MME performs a call after receiving the CS paging request message.
  • CS paging circuit
  • MME Mobility Management Entity
  • MME Mobility Management Entity
  • UE User Equipment
  • UTRAN Universal Terrestrial Radio Access Network
  • the existing circuit domain fallback process mainly includes the following steps:
  • Step 201 The UE has a call, and the UE is the called user. At this time, the UE is in an idle state, and no connection exists with the network.
  • the MSC of the called network where the UE is located receives the initial address message of the incoming call request.
  • the calling party of the incoming call request is a user with high priority characteristics, which carries a priority indication; the MSC/VLR receives the incoming call request, and starts paging for the called party.
  • the MSC/VLR sends a CS paging request to the MME, including the priority indication, according to the saved association information and the like.
  • Step 202 The MME receives the CS paging request message sent by the MSC/VLR, starts to browse the UE, sends a paging message to the eNB, and the paging message includes a priority indication.
  • Step 203 The eNB sends a paging message to the UE.
  • Step 204 After receiving the paging message, the UE sends an extended service request to the MME.
  • Step 205 The MME sends a user equipment context establishment request to the eNB, where the CSFB indication (CS Fall Back indication) and the priority indication are carried.
  • CSFB indication CS Fall Back indication
  • Step 206 The eNB sends a user equipment context setup reply message to the MME.
  • Step 207 The eNB decides to use the redirection mechanism to initiate a wireless connection release, and instructs the UE to redirect to the 2G/3G for circuit domain service.
  • Step 208 The UE initiates a wireless connection in the GERAN/UTRAN.
  • the GERAN/UTRAN is in a congested state, and the service request of the user cannot be processed. Therefore, the UE cannot access the circuit domain service, and the call fails.
  • the circuit domain fallback process mainly includes the following steps:
  • Step 301 The UE has a call, and the UE is the called user. At this time, the UE is in a connected state, and there is a connection with the network.
  • the MSC of the called network where the UE is located receives the initial address message of the incoming call request.
  • the calling party of the incoming call request is a user with a high priority feature, which carries a priority indication;
  • the MSC/VLR receives the incoming call request, starts paging the called user, according to the saved association information, etc., the MSC/ The VLR sends a CS paging request to the MME, which includes a priority indication.
  • Step 302 A connection exists between the UE and the MME, and the MME directly sends a CS service notification message to the UE.
  • Step 303 After receiving the CS service notification message, the UE sends the extended service to the MME. begging.
  • Step 304 The MME sends a user equipment context modification request message to the eNB, where the CSFB indication and the priority indication are carried.
  • Step 305 The eNB sends a user equipment context modification reply message to the MME.
  • Step 306 The eNB decides to use the redirection mechanism to initiate a radio connection release, and instructs the UE to redirect to the 2G/3G for circuit domain service.
  • Step 307 The UE initiates a wireless connection in the GERAN/UTRAN.
  • the GERAN/UTRAN is in a congested state, and the service request of the user cannot be processed. Therefore, the UE cannot access the circuit domain service, and the call fails.
  • the main object of the present invention is to provide a method and system for processing a priority service to solve the problem that the priority service of the prior art cannot guarantee success when the load of the GERAN/UTRAN is too large.
  • the present invention provides a method for processing a priority service, the method comprising:
  • the evolved Node B (eNB) and/or mobility management entity (MME) carries the priority indication of the service in the message sent to the user terminal (UE);
  • the UE When the UE initiates a corresponding service in the GSM EDGE Radio Access Network (GERAN) or the Universal Terrestrial Radio Access Network (UTRAN), the UE sends a priority indication corresponding to the service to the GERAN or the UTRAN.
  • GERAN GSM EDGE Radio Access Network
  • UTRAN Universal Terrestrial Radio Access Network
  • the method further includes: for the UE in the idle state, the eNB carries the priority indication of the service by using a paging message and/or a wireless connection release request message sent to the UE.
  • the method further includes: for the UE in the connected state, the MME carries a priority indication of the service by a handover circuit (CS) service notification message sent to the UE, and/or the eNB releases the request by sending a wireless connection to the UE
  • CS handover circuit
  • the UE When the UE initiates the corresponding service, the UE sends a priority indication corresponding to the service to the GERAN, specifically:
  • the UE sends a channel request message to the GERAN, the establishment cause in the request message is the priority indication, and the establishment cause is filled as an emergency call.
  • the UE When the UTRAN initiates the corresponding service, the UE sends a priority indication corresponding to the service to the UTRAN, specifically:
  • the UE sends a radio resource connection setup request message to the UTRAN, the establishment cause in the request message is used as the priority indication, and the establishment cause is filled with a terminal call high priority signaling or an emergency call.
  • the present invention also provides a processing system for a priority service, where the system includes a UE, an eNB, and an MME, where
  • the eNB and/or the MME are configured to carry a priority indication of the service in the message sent to the UE in a mobile station terminating process in which the circuit domain falls back;
  • the UE is configured to send, when the GERAN or the UTRAN initiates a corresponding service, a priority indication corresponding to the service to the GERAN or the UTRAN.
  • the eNB is further configured to: carry, by the UE in the idle state, a priority indication of the service by using a paging message and/or a wireless connection release request message sent to the UE.
  • the MME is further configured to: carry, by the UE in the connected state, a priority indication of the service by using a CS service notification message that is sent to the UE.
  • the eNB is further configured to: carry, by the UE in the connected state, a priority indication of the service by using a wireless connection release request message sent to the UE.
  • the UE is further configured to send a channel request message to the GERAN, where the request message is The establishment cause is indicated as the priority, and the establishment cause is filled as an emergency call.
  • the UE is further configured to send a radio resource connection setup request message to the UTRAN, where the establishment cause in the request message is used as the priority indication, and the establishment cause is filled with a call high priority signaling or an emergency call.
  • the eNB and/or the MME carry the priority indication of the service in the message sent to the UE; the UE is in the GERAN or When the UTRAN initiates the corresponding service, it sends a priority indication corresponding to the service to the GERAN or the UTRAN.
  • the source network E-UTRAN can fully utilize the existing message carrying service information to notify the UE, and the UE relays the information to the target network GERAN/UTRAN, thereby avoiding high priority service failure in the target network.
  • FIG. 1 is a schematic diagram of a network in which a circuit domain falls back in the prior art
  • FIG. 3 is a flow chart of circuit domain fallback when the UE is in a connected state in the prior art
  • FIG. 4 is a flowchart of a method for processing a priority service according to the present invention.
  • FIG. 5 is a flowchart of a method for processing a priority service according to Embodiment 1 of the present invention.
  • FIG. 6 is a flowchart of a method for processing a priority service according to Embodiment 2 of the present invention.
  • FIG. 7 is a flowchart of a method for processing a priority service according to Embodiment 3 of the present invention.
  • FIG. 8 is a flowchart of a method for processing a priority service according to Embodiment 4 of the present invention. detailed description
  • a method for processing a priority service provided by the present invention mainly includes the following steps:
  • Step 401 The eNB and/or the MME are in the process of terminating the mobile station in the circuit domain.
  • the message sent to the UE carries a priority indication of the service.
  • the eNB may carry the priority indication of the corresponding service by using the paging message and/or the wireless connection release request message sent to the UE.
  • the MME may carry the priority indication of the corresponding service by using the CS service notification message sent to the UE, and/or the eNB may carry the priority indication of the corresponding service by using the wireless connection release request message sent to the UE.
  • Step 402 The UE sends a priority indication corresponding to the service to the GERAN or the UTRAN when the GERAN or the UTRAN initiates the corresponding service.
  • the processing method of the above priority service will be further elaborated below in conjunction with specific embodiments.
  • the first and second embodiments of the present invention occur when the UE is in an idle state.
  • the processing method of the priority service shown in FIG. 5 specifically includes the following steps:
  • Step 501 The UE has a call, and the UE is the called user. At this time, the UE is in an idle state, and no connection exists with the network.
  • the MSC of the called network where the UE is located receives the initial address message of the incoming call request.
  • the calling party of the incoming call request is a user with a high priority feature, which carries a priority indication;
  • the MSC/VLR receives the incoming call request, starts paging the called user, according to the saved association information, etc., the MSC/ The VLR sends a CS paging request message to the MME, which includes a priority indication.
  • Step 502 The MME receives the CS paging request message sent by the MSC/VLR, starts to browse the UE, sends a paging message to the eNB, and the paging message includes a priority indication.
  • Step 503 The eNB sends a paging message to the UE, where the paging message carries a priority indication, and the indication may be represented by 1 bit, which is used to indicate a high priority.
  • Step 504 After receiving the paging message, the UE saves the priority indication therein, and sends an extended service request message to the MME.
  • Step 505 The MME sends a User Equipment Context Setup Request message to the eNB, where the CSFB indication and the priority indication are carried.
  • Step 506 The eNB sends a user equipment context setup reply message to the MME.
  • the eNB decides to use the redirection mechanism to initiate the release of the wireless connection, that is, to send a radio connection release request message to the UE, instructing the UE to redirect to the 2G/3G for circuit domain service.
  • Step 508 The UE initiates a radio connection setup request message in the GERAN/UTRAN, where the UE carries a priority indication to notify the GERAN/UTRAN.
  • the request message may be a channel request message, wherein the priority indication may be an establishment cause, the reason may be an emergency call; when the UE is connected to the UTRAN
  • the request message may be a RRC Connection SETUP Request message, where the reason for the establishment may be terminating High Priority Signaling or an emergency call.
  • the GERAN/UTRAN preferentially processes the request message and allocates resources according to the establishment cause value carried therein.
  • the processing method of the priority service shown in FIG. 6 specifically includes the following steps:
  • Step 601 The UE has a call, and the UE is the called user. At this time, the UE is in an idle state, and no connection exists with the network.
  • the MSC of the called network where the UE is located receives the initial address message of the incoming call request.
  • the calling party of the incoming call request is a user with a high priority feature, which carries a priority indication;
  • the MSC/VLR receives the incoming call request, starts paging the called user, according to the saved association information, etc., the MSC/ The VLR sends a CS paging request message to the MME, which includes a priority indication.
  • Step 602 The MME receives the CS paging request message sent by the MSC/VLR, starts paging the UE, sends a paging message to the eNB, and the paging message includes a priority indication.
  • Step 603 The eNB sends a paging message to the UE.
  • Step 604 After receiving the paging message, the UE sends an extended service request message to the MME.
  • Step 605 The MME sends a User Equipment Context Setup Request message to the eNB, where the CSFB indication and the priority indication are carried.
  • Step 606 The eNB sends a user equipment context setup reply message to the MME.
  • Step 607 the eNB determines to use the redirection mechanism to initiate the release of the wireless connection, that is, to send a radio connection release request message to the UE, instructing the UE to redirect to the 2G/3G to perform the circuit domain service; and the request message carries a priority indication, the indication It can be represented by 1 bit and is used to indicate high priority.
  • the UE After receiving the wireless connection release request message, the UE saves the priority indication therein.
  • Step 608 The UE initiates a radio connection setup request message in the GERAN/UTRAN, where the UE carries a priority indication to notify the GERAN/UTRAN.
  • the request message may be a channel request message, wherein the priority indication may be an establishment cause, the reason may be an emergency call; when the UE is connected to the UTRAN
  • the request message may be a RRC Connection SETUP Request message, where the reason for the establishment may be terminating High Priority Signaling or an emergency call.
  • the GERAN/UTRAN preferentially processes the request message and allocates resources according to the establishment cause value carried therein.
  • the third and fourth embodiments of the present invention occur when the UE is in the connected state.
  • the processing method of the priority service shown in FIG. 7 specifically includes the following steps:
  • Step 701 The UE has a call, and the UE is the called user. At this time, the UE is in a connected state, and there is a connection with the network.
  • the MSC of the called network where the UE is located receives the initial address message of the incoming call request.
  • the calling party of the incoming call request is a user with a high priority feature, which carries a priority indication;
  • the MSC/VLR receives the incoming call request, starts paging the called user, according to the saved association information, etc., the MSC/ The VLR sends a CS paging request message to the MME, which includes a priority indication.
  • Step 702 A connection exists between the UE and the MME, and the MME sends a CS service notification message to the UE.
  • the CS service notification message carries a priority indication, and the indication may be represented by 1 bit, which is used to indicate a high priority.
  • Step 703 After receiving the CS service notification message, the UE saves the priority indication therein, and sends an extended service request message to the MME.
  • Step 704 The MME sends a user equipment context modification request message to the eNB, where the CSFB indication and the priority indication are carried.
  • Step 705 The eNB sends a user equipment context modification reply message to the MME.
  • Step 706 The eNB decides to use the redirection mechanism to initiate the release of the wireless connection, that is, sends a radio connection release request message to the UE, instructing the UE to redirect to the 2G/3G for circuit domain service.
  • Step 707 The UE initiates a radio connection setup request message in the GERAN/UTRAN, where the UE carries a priority indication to notify the GERAN/UTRAN.
  • the request message may be a channel request message, wherein the priority indication may be an establishment cause, the reason may be an emergency call; when the UE is connected to the UTRAN
  • the request message may be a RRC Connection SETUP Request message, where the reason for the establishment may be terminating High Priority Signaling or an emergency call.
  • the GERAN/UTRAN preferentially processes the request message and allocates resources according to the establishment cause value carried therein.
  • the processing method of the priority service shown in FIG. 8 specifically includes the following steps:
  • Step 801 The UE has a call, and the UE is the called user. At this time, the UE is in a connected state, and there is a connection with the network.
  • the MSC of the called network where the UE is located receives the initial address message of the incoming call request.
  • the calling party of the incoming call request is a user with a high priority feature, which carries a priority indication;
  • the MSC/VLR receives the incoming call request, starts paging the called user, according to the saved association information, etc., the MSC/ The VLR sends a CS paging request message to the MME, which includes a priority indication.
  • Step 802 A connection exists between the UE and the MME, and the MME directly sends a CS service notification message to the UE.
  • Step 803 After receiving the CS service notification message, the UE sends an extended service request message to the MME.
  • Step 804 The MME sends a user equipment context modification request message to the eNB, where the CSFB indication and the priority indication are carried.
  • Step 805 The eNB sends a user equipment context modification reply message to the MME.
  • Step 806 the eNB determines to use the redirection mechanism to initiate the release of the wireless connection, that is, to send a radio connection release request message to the UE, instructing the UE to redirect to the 2G/3G for performing the circuit domain service; and the request message carries a priority indication, the indication It can be represented by 1 bit and is used to indicate high priority.
  • the UE After receiving the wireless connection release request message, the UE saves the priority indication therein.
  • Step 807 The UE initiates a radio connection setup request message in the GERAN/UTRAN.
  • the UE carries a priority indication to notify the GERAN/UTRAN.
  • the request message may be a channel request message, wherein the priority indication may be an establishment cause, the reason may be an emergency call; when the UE is connected to the UTRAN
  • the request message may be a RRC Connection SETUP Request message, where the reason for the establishment may be terminating High Priority Signaling or an emergency call.
  • the GERAN/UTRAN preferentially processes the request message and allocates resources according to the establishment cause value carried therein.
  • the present invention further provides a processing system for priority services, including: a UE, an eNB, and an MME.
  • the eNB and/or the MME are configured to carry a priority indication of the service in the message sent to the UE during the mobile station terminating process of the circuit domain falling back.
  • the UE is configured to send, to the GERAN or the UTRAN, a priority indication corresponding to the service when the GERAN or the UTRAN initiates the corresponding service.
  • the eNB is further configured to: for the UE in the idle state, the paging message and/or the wireless connection release request message sent to the UE carries the priority indication of the corresponding service.
  • the MME is further configured to: carry, by the UE in the connected state, the priority indication of the corresponding service by using the CS service notification message sent to the UE.
  • the eNB is further configured to: carry, by the UE in the connected state, the priority indication of the corresponding service by using the wireless connection release request message sent to the UE.
  • the source network E-UTRAN can fully utilize the existing message carrying service information to notify the UE, and the UE relays the information to the target network GERAN/UTRAN, thereby avoiding high priority service failure in the target network.

Description

一种优先业务的处理方法和系统 技术领域
本发明涉及通信领域， 尤其涉及一种优先业务的处理方法和系统。 背景技术
多媒体优先级业务是指政府部门 （如国家安全、 紧急事务部门等） 工 作人员使用公共网络发起优先级业务， 此时， 在一些特殊场合需要优先支 持该业务， 如在通信网的无线侧或者核心网侧发生拥塞时。
如图 1 所示， 当一个具有高优先级特征的语音呼叫到达被叫用户侧网 络时，被叫用户在演进的通用陆地无线接入网（ E-UTRAN, Evolved universal Terrestrial Radio Access Network )接入， 其中 E-UTRAN由演进的节点 B ( eNB, evolved Node B )组成； 移动交换中心 （MSC, Mobile Switching Center ) /拜访位置寄存器 （ VLR, Visitor Location Register ) ( MSC和 VLR 通常同时使用）接收到入呼请求， 通过移动性管理实体（MME, Mobility Management Entity )和 MSC/VLR之间的接口发送切换电路（CS, Circuit Switched )寻呼请求消息， MME接收到 CS寻呼请求消息后， 进行呼叫电 路域回落。 此时用户终端 （ UE, User Equipment )通过 GSM EDGE无线接 入网 （ GERAN, GSM EDGE Radio Access Network ) /通用陆地无线接入网 ( UTRAN, Universal Terrestrial Radio Access Network )连接到 MSC。
如图 2所示， 现有的电路域回落流程， 主要包括以下步骤：
步骤 201 , UE有一个呼叫， 并且 UE是被呼叫的用户， 此时 UE处于 空闲态， 与网络之间没有连接存在。 UE所在的被叫网络的 MSC接收到入 呼请求的初始地址消息。 该入呼请求的主叫方是一个具有高优先级特性的 用户， 其中携带优先级指示； MSC/VLR接收到入呼请求， 开始寻呼被叫用 户， 根据保存的关联关系信息等， MSC/VLR给 MME发送一个 CS寻呼请 求， 其中包含优先级指示。
步骤 202, MME接收到 MSC/VLR发来的 CS寻呼请求消息， 开始寻 呼 UE, 向 eNB发送寻呼消息， 且寻呼消息中包含优先级指示。
步骤 203 , eNB向 UE发送寻呼消息。
步骤 204, UE收到寻呼消息后， 向 MME发送扩展的业务请求。
步骤 205 , MME向 eNB发送用户设备上下文建立请求， 其中携带电路 域回落指示 （ CSFB indication, CS Fall Back indication )和优先级指示。
步骤 206 , eNB向 MME发送用户设备上下文建立回复消息。
步骤 207, eNB决定使用重定向机制， 发起无线连接释放， 指示 UE重 定向到 2G/3G进行电路域业务。
步骤 208 , UE 在 GERAN/UTRAN 发起无线连接， 此时由于 GERAN/UTRAN处于拥塞状态 , 无法处理用户的业务请求 , 因此该 UE无 法接入电路域业务， 导致该呼叫失败。
类似的情况也发生在 UE处于连接态， 即与网络之间存在连接时，如图 3所示， 电路域回落流程主要包括以下步骤：
步骤 301 , UE有一个呼叫， 并且 UE是被呼叫的用户， 此时 UE处于 连接态， 与网络之间存在连接。 UE所在的被叫网络的 MSC接收到入呼请 求的初始地址消息。 该入呼请求的主叫方是一个具有高优先级特性的用户， 其中携带优先级指示； MSC/VLR接收到入呼请求， 开始寻呼被叫用户， 根 据保存的关联关系信息等， MSC/VLR给 MME发送一个 CS寻呼请求， 其 中包含优先级指示。
步骤 302, UE与 MME之间存在连接， MME直接向 UE发送 CS业务 通知消息。
步骤 303 , UE收到 CS业务通知消息后， 向 MME发送扩展的业务请 求。
步骤 304, MME向 eNB发送用户设备上下文修改请求消息， 其中携带 CSFB指示和优先级指示。
步骤 305 , eNB向 MME发送用户设备上下文修改回复消息。
步骤 306, eNB决定使用重定向机制， 发起无线连接释放， 指示 UE重 定向到 2G/3G进行电路域业务。
步骤 307 , UE 在 GERAN/UTRAN 发起无线连接， 此时由于 GERAN/UTRAN处于拥塞状态 , 无法处理用户的业务请求 , 因此该 UE无 法接入电路域业务， 导致该呼叫失败。
因为上述情况的存在， 导致现有技术的具有优先级的电路域呼叫在 GERAN/UTRAN负荷过大时无法保证成功。 发明内容
有鉴于此， 本发明的主要目的在于提供一种优先业务的处理方法和系 统，以解决现有技术的优先级业务在 GERAN/UTRAN负荷过大时无法保证 成功的问题。
为达到上述目的， 本发明的技术方案是这样实现的：
本发明提供了一种优先业务的处理方法， 该方法包括：
在电路域回落的移动台终呼过程中， 演进的节点 B ( eNB )和 /或移动 性管理实体（MME )在发送给用户终端（UE )的消息中携带业务的优先级 指示；
所述 UE在 GSM EDGE无线接入网（ GERAN )或通用陆地无线接入网 ( UTRAN )发起对应的业务时， 向 GERAN或 UTRAN发送所述业务对应 的优先级指示。
该方法进一步包括： 对于处于空闲态的 UE, 所述 eNB通过发送给 UE 的寻呼消息和 /或无线连接释放请求消息携带所述业务的优先级指示。 该方法进一步包括： 对于处于连接态的 UE, 所述 MME 通过发送给 UE的切换电路（ CS )业务通知消息携带所述业务的优先级指示，和 /或 eNB 通过发送给 UE的无线连接释放请求消息携带所述业务的优先级指示。
所述 UE在 GERAN发起对应的业务时，向 GERAN发送所述业务对应 的优先级指示， 具体为：
所述 UE向 GERAN发送信道请求消息，所述请求消息中的建立原因作 为所述优先级指示， 且所述建立原因填充为紧急呼叫。
所述 UE在 UTRAN发起对应的业务时，向 UTRAN发送所述业务对应 的优先级指示， 具体为：
所述 UE向 UTRAN发送无线资源连接建立请求消息，所述请求消息中 的建立原因作为所述优先级指示， 且所述建立原因填充为终呼高优先信令 或紧急呼叫。
本发明还提供了一种优先业务的处理系统， 该系统包括 UE、 eNB 和 MME, 其中，
所述 eNB和 /或 MME, 用于在电路域回落的移动台终呼过程中， 在发 送给所述 UE的消息中携带业务的优先级指示；
所述 UE, 用于在 GERAN或 UTRAN发起对应的业务时， 向 GERAN 或 UTRAN发送所述业务对应的优先级指示。
所述 eNB进一步用于， 对于处于空闲态的 UE, 通过发送给 UE的寻呼 消息和 /或无线连接释放请求消息携带所述业务的优先级指示。
所述 MME进一步用于，对于处于连接态的 UE,通过发送给 UE的 CS 业务通知消息携带所述业务的优先级指示。
所述 eNB进一步用于， 对于处于连接态的 UE, 通过发送给 UE的无线 连接释放请求消息携带所述业务的优先级指示。
所述 UE进一步用于， 向 GERAN发送信道请求消息， 所述请求消息中 的建立原因作为所述优先级指示， 且所述建立原因填充为紧急呼叫。
所述 UE进一步用于， 向 UTRAN发送无线资源连接建立请求消息， 所 述请求消息中的建立原因作为所述优先级指示， 且所述建立原因填充为终 呼高优先信令或紧急呼叫。
本发明所提供的一种优先业务的处理方法和系统， 在电路域回落的移 动台终呼过程中 , eNB和 /或 MME在发送给 UE的消息中携带业务的优先 级指示； UE在 GERAN或 UTRAN发起对应的业务时，向 GERAN或 UTRAN 发送该业务对应的优先级指示。通过本发明， 源网络 E-UTRAN能够充分利 用现有消息携带业务信息通知 UE , UE 中转该信息到目标网络 GERAN/UTRAN, 从而能够避免目标网络中的高优先业务失败。 附图说明
图 1为现有技术中电路域回落的网络示意图；
图 2为现有技术中 UE处于空闲态时的电路域回落流程图；
图 3为现有技术中 UE处于连接态时的电路域回落流程图；
图 4为本发明一种优先业务的处理方法流程图；
图 5为本发明实施例一的优先业务的处理方法流程图；
图 6为本发明实施例二的优先业务的处理方法流程图；
图 7为本发明实施例三的优先业务的处理方法流程图；
图 8为本发明实施例四的优先业务的处理方法流程图。 具体实施方式
下面结合附图和具体实施例对本发明的技术方案进一步详细阐述。 本发明提供的一种优先业务的处理方法， 如图 4所示， 主要包括以下 步骤：
步骤 401 , 在电路域回落的移动台终呼过程中， eNB和 /或 MME在发 送给 UE的消息中携带业务的优先级指示。
其中， 对于处于空闲态的 UE , eNB可以通过发送给 UE的寻呼消息和 /或无线连接释放请求消息携带对应业务的优先级指示。 对于处于连接态的 UE, MME可以通过发送给 UE的 CS业务通知消息携带对应业务的优先级 指示， 和 /或 eNB可以通过发送给 UE的无线连接释放请求消息携带对应业 务的优先级指示。
步骤 402, UE在 GERAN或 UTRAN发起对应的业务时， 向 GERAN 或 UTRAN发送该业务对应的优先级指示。
下面再结合具体实施例对上述优先业务的处理方法进一步详细阐述。 本发明的实施例一、二发生在 UE处于空闲态的情况下， 图 5所示优先 业务的处理方法具体包括以下步骤：
步骤 501 , UE有一个呼叫， 并且 UE是被呼叫的用户， 此时 UE处于 空闲态， 与网络之间没有连接存在。 UE所在的被叫网络的 MSC接收到入 呼请求的初始地址消息。 该入呼请求的主叫方是一个具有高优先级特性的 用户， 其中携带优先级指示； MSC/VLR接收到入呼请求， 开始寻呼被叫用 户， 根据保存的关联关系信息等， MSC/VLR给 MME发送一个 CS寻呼请 求消息， 其中包含优先级指示。
步骤 502, MME接收到 MSC/VLR发来的 CS寻呼请求消息， 开始寻 呼 UE, 向 eNB发送寻呼消息， 且寻呼消息中包含优先级指示。
步骤 503 , eNB向 UE发送寻呼消息， 该寻呼消息中携带优先级指示， 该指示可以用 1个比特来表示， 用于指示高优先级。
步骤 504, UE收到寻呼消息后， 保存其中的优先级指示， 并向 MME 发送扩展的业务请求消息。
步骤 505 , MME向 eNB发送用户设备上下文建立请求消息， 其中携带 CSFB指示和优先级指示。 步骤 506 , eNB向 MME发送用户设备上下文建立回复消息。
步骤 507, eNB决定使用重定向机制， 发起无线连接释放， 即向 UE发 送无线连接释放请求消息， 指示 UE重定向到 2G/3G进行电路域业务。
步骤 508, UE在 GERAN/UTRAN发起无线连接建立请求消息， 在该 请求消息中， UE携带优先级指示通知 GERAN/UTRAN。
当 UE连接到 GERAN时，该请求消息可以是信道请求（ channel request ) 消息， 其中的优先级指示可以是建立原因 （ establishment cause ), 该原因可 以是紧急呼叫 （ emergency call ); 当 UE连接到 UTRAN时， 该请求消息可 以是无线资源连接建立请求（ RRC Connection SETUP Request )消息， 其中 携带的建立原因可以是终呼高优先信令（ terminating High Priority Signaling ) 或者紧急呼叫。 收到上述请求消息后， GERAN/UTRAN根据其中携带的建 立原因值， 优先处理该请求消息及分配资源。
图 6所示优先业务的处理方法具体包括以下步骤：
步骤 601 , UE有一个呼叫， 并且 UE是被呼叫的用户， 此时 UE处于 空闲态， 与网络之间没有连接存在。 UE所在的被叫网络的 MSC接收到入 呼请求的初始地址消息。 该入呼请求的主叫方是一个具有高优先级特性的 用户， 其中携带优先级指示； MSC/VLR接收到入呼请求， 开始寻呼被叫用 户， 根据保存的关联关系信息等， MSC/VLR给 MME发送一个 CS寻呼请 求消息， 其中包含优先级指示。
步骤 602, MME接收到 MSC/VLR发来的 CS寻呼请求消息， 开始寻 呼 UE, 向 eNB发送寻呼消息， 且寻呼消息中包含优先级指示。
步骤 603 , eNB向 UE发送寻呼消息。
步骤 604, UE收到寻呼消息后， 向 MME发送扩展的业务请求消息。 步骤 605 , MME向 eNB发送用户设备上下文建立请求消息， 其中携带 CSFB指示和优先级指示。 步骤 606 , eNB向 MME发送用户设备上下文建立回复消息。
步骤 607, eNB决定使用重定向机制， 发起无线连接释放， 即向 UE发 送无线连接释放请求消息， 指示 UE重定向到 2G/3G进行电路域业务； 且 该请求消息中携带优先级指示， 该指示可以用 1 个比特来表示， 用于指示 高优先级。 UE接收到无线连接释放请求消息后， 保存其中的优先级指示。
步骤 608, UE在 GERAN/UTRAN发起无线连接建立请求消息， 在该 请求消息中， UE携带优先级指示通知 GERAN/UTRAN。
当 UE连接到 GERAN时，该请求消息可以是信道请求（ channel request ) 消息， 其中的优先级指示可以是建立原因 （ establishment cause ), 该原因可 以是紧急呼叫 （ emergency call ); 当 UE连接到 UTRAN时， 该请求消息可 以是无线资源连接建立请求（ RRC Connection SETUP Request )消息， 其中 携带的建立原因可以是终呼高优先信令（ terminating High Priority Signaling ) 或者紧急呼叫。 收到上述请求消息后， GERAN/UTRAN根据其中携带的建 立原因值， 优先处理该请求消息及分配资源。
本发明的实施例三、四发生在 UE处于连接态的情况下， 图 7所示优先 业务的处理方法具体包括以下步骤：
步骤 701 , UE有一个呼叫， 并且 UE是被呼叫的用户， 此时 UE处于 连接态， 与网络之间存在连接。 UE所在的被叫网络的 MSC接收到入呼请 求的初始地址消息。 该入呼请求的主叫方是一个具有高优先级特性的用户， 其中携带优先级指示； MSC/VLR接收到入呼请求， 开始寻呼被叫用户， 根 据保存的关联关系信息等， MSC/VLR给 MME发送一个 CS寻呼请求消息， 其中包含优先级指示。
步骤 702, UE与 MME之间存在连接， MME直接向 UE发送 CS业务 通知消息， 该 CS业务通知消息中携带优先级指示， 该指示可以用 1个比特 来表示， 用于指示高优先级。 步骤 703 , UE收到 CS业务通知消息后， 保存其中的优先级指示， 并 向 MME发送扩展的业务请求消息。
步骤 704, MME向 eNB发送用户设备上下文修改请求消息， 其中携带 CSFB指示和优先级指示。
步骤 705 , eNB向 MME发送用户设备上下文修改回复消息。
步骤 706, eNB决定使用重定向机制， 发起无线连接释放， 即向 UE发 送无线连接释放请求消息， 指示 UE重定向到 2G/3G进行电路域业务。
步骤 707, UE在 GERAN/UTRAN发起无线连接建立请求消息， 在该 请求消息中， UE携带优先级指示通知 GERAN/UTRAN。
当 UE连接到 GERAN时，该请求消息可以是信道请求（ channel request ) 消息， 其中的优先级指示可以是建立原因 （ establishment cause ), 该原因可 以是紧急呼叫 （ emergency call ); 当 UE连接到 UTRAN时， 该请求消息可 以是无线资源连接建立请求（ RRC Connection SETUP Request )消息， 其中 携带的建立原因可以是终呼高优先信令（ terminating High Priority Signaling ) 或者紧急呼叫。 收到上述请求消息后， GERAN/UTRAN根据其中携带的建 立原因值， 优先处理该请求消息及分配资源。
图 8所示优先业务的处理方法具体包括以下步骤：
步骤 801 , UE有一个呼叫， 并且 UE是被呼叫的用户， 此时 UE处于 连接态， 与网络之间存在连接。 UE所在的被叫网络的 MSC接收到入呼请 求的初始地址消息。 该入呼请求的主叫方是一个具有高优先级特性的用户， 其中携带优先级指示； MSC/VLR接收到入呼请求， 开始寻呼被叫用户， 根 据保存的关联关系信息等， MSC/VLR给 MME发送一个 CS寻呼请求消息， 其中包含优先级指示。
步骤 802, UE与 MME之间存在连接， MME直接向 UE发送 CS业务 通知消息。 步骤 803 , UE收到 CS业务通知消息后， 向 MME发送扩展的业务请 求消息。
步骤 804, MME向 eNB发送用户设备上下文修改请求消息， 其中携带 CSFB指示和优先级指示。
步骤 805 , eNB向 MME发送用户设备上下文修改回复消息。
步骤 806, eNB决定使用重定向机制， 发起无线连接释放， 即向 UE发 送无线连接释放请求消息， 指示 UE重定向到 2G/3G进行电路域业务； 且 该请求消息中携带优先级指示， 该指示可以用 1 个比特来表示， 用于指示 高优先级。 UE接收到无线连接释放请求消息后， 保存其中的优先级指示。
步骤 807, UE在 GERAN/UTRAN发起无线连接建立请求消息， 在该 请求消息中， UE携带优先级指示通知 GERAN/UTRAN。
当 UE连接到 GERAN时，该请求消息可以是信道请求（ channel request ) 消息， 其中的优先级指示可以是建立原因 （ establishment cause ), 该原因可 以是紧急呼叫 （ emergency call ); 当 UE连接到 UTRAN时， 该请求消息可 以是无线资源连接建立请求（ RRC Connection SETUP Request )消息， 其中 携带的建立原因可以是终呼高优先信令（ terminating High Priority Signaling ) 或者紧急呼叫。 收到上述请求消息后， GERAN/UTRAN根据其中携带的建 立原因值， 优先处理该请求消息及分配资源。
对应上述优先业务的处理方法， 本发明还提供了一种优先业务的处理 系统， 包括： UE、 eNB和 MME。 其中， eNB和 /或 MME, 用于在电路域 回落的移动台终呼过程中， 在发送给 UE的消息中携带业务的优先级指示。 UE,用于在 GERAN或 UTRAN发起对应的业务时， 向 GERAN或 UTRAN 发送该业务对应的优先级指示。
较佳的， eNB进一步用于， 对于处于空闲态的 UE, 通过发送给 UE的 寻呼消息和 /或无线连接释放请求消息携带对应业务的优先级指示。 较佳的， MME进一步用于， 对于处于连接态的 UE, 通过发送给 UE 的 CS业务通知消息携带对应业务的优先级指示。
较佳的， eNB进一步用于， 对于处于连接态的 UE, 通过发送给 UE的 无线连接释放请求消息携带对应业务的优先级指示。
综上所述，通过本发明， 源网络 E-UTRAN能够充分利用现有消息携带 业务信息通知 UE, UE中转该信息到目标网络 GERAN/UTRAN, 从而能够 避免目标网络中的高优先业务失败。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种优先业务的处理方法， 其特征在于， 该方法包括：
在电路域回落的移动台终呼过程中， 演进的节点 B ( eNB )和 /或移动 性管理实体（MME )在发送给用户终端（UE )的消息中携带业务的优先级 指示；
所述 UE在 GSM EDGE无线接入网（ GERAN )或通用陆地无线接入网 ( UTRAN )发起对应的业务时， 向 GERAN或 UTRAN发送所述业务对应 的优先级指示。
2、 根据权利要求 1所述优先业务的处理方法， 其特征在于， 该方法进 一步包括： 对于处于空闲态的 UE, 所述 eNB通过发送给 UE的寻呼消息和 /或无线连接释放请求消息携带所述业务的优先级指示。
3、 根据权利要求 1所述优先业务的处理方法， 其特征在于， 该方法进 一步包括： 对于处于连接态的 UE, 所述 MME通过发送给 UE的切换电路
( CS ) 业务通知消息携带所述业务的优先级指示， 和 /或 eNB通过发送给 UE的无线连接释放请求消息携带所述业务的优先级指示。
4、 根据权利要求 1所述优先业务的处理方法， 其特征在于， 所述 UE 在 GERAN发起对应的业务时 ,向 GERAN发送所述业务对应的优先级指示， 具体为：
所述 UE向 GERAN发送信道请求消息，所述请求消息中的建立原因作 为所述优先级指示， 且所述建立原因填充为紧急呼叫。
5、 根据权利要求 1所述优先业务的处理方法， 其特征在于， 所述 UE 在 UTRAN发起对应的业务时，向 UTRAN发送所述业务对应的优先级指示， 具体为：
所述 UE向 UTRAN发送无线资源连接建立请求消息，所述请求消息中 的建立原因作为所述优先级指示， 且所述建立原因填充为终呼高优先信令 或紧急呼叫。
6、 一种优先业务的处理系统， 其特征在于， 该系统包括 UE、 eNB和 MME, 其中，
所述 eNB和 /或 MME, 用于在电路域回落的移动台终呼过程中， 在发 送给所述 UE的消息中携带业务的优先级指示；
所述 UE, 用于在 GERAN或 UTRAN发起对应的业务时， 向 GERAN 或 UTRAN发送所述业务对应的优先级指示。
7、 根据权利要求 6所述优先业务的处理系统， 其特征在于， 所述 eNB 进一步用于， 对于处于空闲态的 UE, 通过发送给 UE的寻呼消息和 /或无线 连接释放请求消息携带所述业务的优先级指示。
8、根据权利要求 6所述优先业务的处理系统，其特征在于，所述 MME 进一步用于， 对于处于连接态的 UE, 通过发送给 UE的 CS业务通知消息 携带所述业务的优先级指示。
9、 根据权利要求 6或 8所述优先业务的处理系统， 其特征在于， 所述 eNB进一步用于， 对于处于连接态的 UE, 通过发送给 UE的无线连接释放 请求消息携带所述业务的优先级指示。
10、 根据权利要求 6所述优先业务的处理系统， 其特征在于， 所述 UE 进一步用于， 向 GERAN发送信道请求消息， 所述请求消息中的建立原因 作为所述优先级指示， 且所述建立原因填充为紧急呼叫。
11、 根据权利要求 6所述优先业务的处理系统， 其特征在于， 所述 UE 进一步用于， 向 UTRAN发送无线资源连接建立请求消息， 所述请求消息 中的建立原因作为所述优先级指示， 且所述建立原因填充为终呼高优先信 令或紧急呼叫。
PCT/CN2011/077664 2010-08-23 2011-07-27 一种优先业务的处理方法和系统 WO2012025001A1 (zh)

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