WO2014003431A1 - 무선 통신 시스템에서 영역 갱신 방법 및 장치 - Google Patents
무선 통신 시스템에서 영역 갱신 방법 및 장치 Download PDFInfo
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- WO2014003431A1 WO2014003431A1 PCT/KR2013/005640 KR2013005640W WO2014003431A1 WO 2014003431 A1 WO2014003431 A1 WO 2014003431A1 KR 2013005640 W KR2013005640 W KR 2013005640W WO 2014003431 A1 WO2014003431 A1 WO 2014003431A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/09—Management thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/12—Flow control between communication endpoints using signalling between network elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
-
- 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 following description relates to a wireless communication system, and more particularly, to a method and apparatus for updating an area of a terminal.
- Machine Type Co uni cations refers to a communication method including one or more machines, and may also be referred to as machine-to-machine (M2M) communication or object communication.
- M2M machine-to-machine
- a machine is an entity that does not require human intervention or intervention.
- devices such as meters or vending machines equipped with mobile communication modules, as well as user devices such as smartphones that can automatically connect and communicate with a network without user intervention / intervention, This may correspond to an example.
- Various examples of such machines are referred to herein as MTC devices or terminals. That is, MTC means communication performed by one or more machines (ie, MTC devices) without human intervention / intervention.
- the MTC may include communication between MTC devices (eg, device-to-device (D2D) communication) and communication between an MTC device and an MTC application server.
- MTC devices eg, device-to-device (D2D) communication
- Examples of communication between the MTC device and the MTC application server may include a communication between a vending machine and a server, a POSCPoint of Sale device and a server, an electric, gas or water meter, and a server.
- applications based on MTC may include security, transportation, health care, and the like.
- congestion control may be performed in a control plane.
- network congestion control may be performed at the non-access stratum (NAS) level, which is the highest stratum in the control plane between the terminal and the network control node in the air interface.
- NAS non-access stratum
- the network when a network congestion condition occurs, the network backoffs a request for the network to the terminal for a predetermined time. You can set a back-ofi timer.
- the terminal when the terminal moves to a location that is not registered while the back off timer is operating in the terminal, the terminal is located with respect to the network due to constraints by the back off timer. The update cannot be performed. In this case, even though the network sends a paging message to find the terminal, the terminal cannot receive the paging response operation. Due to the failure of the paging procedure, the terminal cannot receive the mobile MT (eg, Mobile Terminated-Cal 1) / SMS (Short Message Service) that is increased.
- the mobile MT eg, Mobile Terminated-Cal 1
- SMS Short Message Service
- the present invention provides a method and apparatus for allowing a terminal to correctly perform a paging response operation and to receive a seamless service even when the terminal moves to an unregistered area.
- a method for processing an area update request of a terminal in a network node comprising: receiving an area update request message from the terminal; And determining whether to accept the area update request based on the indication information included in the area update request message when the network is in a congested state, wherein the indication information is a new area in which the terminal is not registered. In the case of indicating moving to, it may be determined to accept the region update request.
- a network node apparatus for processing an area update request of a terminal includes: transmission and reception modules; And a processor, wherein the processor is configured to receive an area update request message from the terminal using the transmission / reception modules; When the network is congested, it is set to determine whether to accept the area update request based on the indication information included in the area update request message, and the indication information moves to a new area where the terminal is not registered. If so, it may be determined to accept the region update request.
- the method may further include transmitting an area update request acceptance message to the terminal.
- the backoff timer may be maintained until it expires.
- the terminal may stop the backoff timer and respond to the paging message when the terminal receives the paging message in response to the operation.
- the indication information may be EPS update type information, update type information, EPS update status information, or update status information, and may indicate a specific state of the indication information. (state) or a specific value may be set to indicate that the terminal moves to a new unregistered area and requests the area update.
- the TAI or RAI value stored in the network by a value of TAKTraddng Area Identity (Routing Area Identity) or RAI (Routing Area Identity) included in the area update request message while the indication information indicates the specific state or the specific value. If different from the, it may be set to indicate that the terminal moves to a new area that is not registered to request the area update.
- the terminal moves to a new unregistered area to request the area update. It can be set to indicate that.
- the new area may be a new TACTracking Area, a new Routing Area, or a new Public Land Mobile Network.
- the new TA or new RA may be a TA or RA not included in the TA or RA list registered by the terminal.
- the area update request message may be one of a TAUCTracking Area Update message, a Routing Area Update (RAU) message, a combined TAU message, or a combined RAU message.
- RAU Routing Area Update
- the area update request message may be transmitted even when a backoff timer is operating in the terminal.
- the area update request message may be transmitted when the terminal enters the new area even while the backoff timer is in operation.
- the value for the backoff timer may be included in a Non-Access Stratum (NAS) reject message from the network before the terminal moves to the new area.
- NAS Non-Access Stratum
- the backoff timer may be a mobility management backoff timer.
- a method and apparatus for enabling the terminal to correctly perform a paging answering operation and to receive a seamless service may be provided.
- EPC Evolved Packet Core
- FIG. 2 is a diagram illustrating examples of an MTC communication model.
- 3 is a diagram illustrating an exemplary model of the MTC structure. 4 illustrates the structure of a TAI.
- FIG. 5 is a flowchart illustrating an area update method according to an example of the present invention.
- FIG. 6 is a flowchart illustrating a TAU operation according to an example of the present invention.
- FIG. 7 is a flowchart illustrating an RAU operation according to an example of the present invention.
- FIG. 8 is a diagram showing the configuration of a preferred embodiment of the device according to an example of the present invention.
- each component or feature may be considered to be optional unless otherwise stated.
- Each component or feature may be embodied in a form that is not combined with other components or features.
- some components and / or features may be combined to form an embodiment of the present invention.
- the order of the operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment.
- Embodiments of the present invention may be supported by standard documents disclosed in relation to at least one of the IEEE Institute of Electrical and Electronics Engineers) 802 series system, 3GPP system, 3GPP LTE and LTE-A system, and 3GPP2 system. That is, the steps or parts which are not described in order to clarify the technical spirit of the present invention may be supported by the above documents.
- all terms disclosed in the present document can be described by the above standard document.
- the following techniques can be used in various wireless communication systems. For clarity, the following description focuses on 3GPP LTE and 3GPP LTE-A systems, but the technical spirit of the present invention is not limited thereto.
- [42]-UMTS Universal Mobile Telecommunications System: A third generation (Generat ion) mobile communication technology based on the Global System for Mobile Co. unicat ion (GSM) developed by 3GPP.
- GSM Global System for Mobile Co. unicat ion
- Evolved Packet System A network system consisting of an Evolved Packet Core (EPC), which is a packet switched (PS) core network based on Internet Protocol (IP), and an access network of LTE / UTRAN.
- EPC Evolved Packet Core
- PS packet switched
- IP Internet Protocol
- UMTS is an evolutionary network.
- NodeB base station of GERAN / UTRAN. It is installed outdoors and its coverage is macro cell size.
- [45]-eNodeB base station of E-UTRAN. It is installed outdoors and its coverage is macro cell size.
- UE User Equipment
- the UE may be referred to in terms of terminal, ECMobile Equipment (MS), mobile station (MS), and the like.
- the UE may be a portable device such as a laptop, a mobile phone, a PDACPersonal Digital Assistant), a smart phone, a multimedia device, or a non-portable device such as a PCXPersonal Computer) or a vehicle-mounted device.
- the term UE or UE may refer to an MTC device.
- HNB Home NodeB
- MME Mobility Management Entity
- SM Session Management
- -PDN-GW Packet Data Network-Gat eway
- PGW Packet Data Network-Gat eway
- PGW A network node of an EPS network that performs UE IP address assignment, packet screening and filtering, charging data collection, and the like.
- -SGKServing Gateway A network node of an EPS network that performs mobility anchor, packet routing, idle mode packet buffering, and E to trigger paging of UE. .
- PCRF Charging Rule Function
- [53]-OMA DM (0pen Mobile Alliance Device Management): A protocol designed for the management of mobile devices such as mobile phones, PDAs, portable computers, etc., which includes device configuration, firmware upgrade, and error reporting. Report).
- 0AM (0peration Administration and Maintenance): 0AM is a set of network management functions that provides network fault indication, performance information, data and diagnostic functions.
- [55]-NAS Non—Access Stratum: The upper stratum of the control plane between the UE and ⁇ E. As a functional layer for exchanging signaling and traffic messages between the UE and the core network in the LTE / UMTS protocol stack, supporting the mobility of the UE and supporting session management procedures for establishing and maintaining an IP connection between the UE and the PDN GW. It is a main function. '
- [56]-NAS configuration MCKNAS configuration management object A management object (M0) used to configure parameters related to NAS functionalities to the UE.
- [57]-SIPTOCSelected IP Traffic Offload A method of bypassing and transmitting a specific IP traffic through an H (e) NB or a macro cell to a public network such as the Internet instead of an operator network.
- H (e) NB H
- a public network such as the Internet instead of an operator network.
- the operator supports the user's traffic passing by selecting the PDN-GW that is physically near the UE in the EPC network.
- PDN Packet Data Network
- MMS Multimedia Messaging Service
- WAP Wireless Application Protocol
- PDN Packet Data Network
- APN Access Point Name
- APN is internet. It can be expressed as mnc012.mcc345.gprs.
- Machine Type Counications Communication performed by a machine without human intervention.
- [62]-MTC device A UE (eg, vending machine, meter reading device, etc.) having a communication function through a core network and performing a specific purpose.
- UE eg, vending machine, meter reading device, etc.
- SCSCServices Capability Server A server connected to a 3GPP network for communication between an MTC device in an HPL ⁇ (Home Public Land Mobile Network) and an MTC device using an MTC-IWF (InterWorking Function). Provides the ability to use one or more applications.
- HPL ⁇ Home Public Land Mobile Network
- MTC-IWF InterWorking Function
- MTC-applied services eg remote meter reading, volume movement tracking, etc.
- [65]-MTC application server A server on a network on which an MTC application runs.
- [66]-MTC feature A function of a network to support MTC application.
- MTC monitoring is a feature to prepare for lost equipment in MTC applications such as remote meter reading
- low mobility is a feature for MTC applications for MTC devices such as vending machines.
- [67]-RANC adio Access Network a unit including a NodeB, an eNodeB and an RNC Radio Network Controller controlling them in a 3GPP network. It exists between UEs and provides a connection to the core network.
- HLR Home Location Register
- HSS Home Subscriber Server
- PLMN Public Land Mobile Network
- [71]-Mobility Management back-off timer A mobility management related backoff timer used to control when a congestion occurs in the network. ⁇ While the backoff timer is running, the UE attaches, updates location information (e.g., TAU Tracking Area Update, Routing Area Update), service request / extended ( extended) service request is set to be disabled (except in case of emergency bearer service, paging response in existing area, or multimedia priority service) Is set so that the UE can request it even if it is operating).
- location information e.g., TAU Tracking Area Update, Routing Area Update
- service request / extended ( extended) service request is set to be disabled (except in case of emergency bearer service, paging response in existing area, or multimedia priority service) Is set so that the UE can request it even if it is operating).
- [72]-Session Management back-off timer A session control related backoff timer used to control a congestion ion in the network. While the SM backoff timer is running, the UE is configured not to set or change the associated APN based session (except in case of an emergency bearer service or MPS3 ⁇ 4I, the SM backoff timer operates. If so, the UE is configured to request it).
- [73]-TA Tracking Area: A registration area of a terminal in an EPS network.
- the TA is identified as a TAI (Tracking Area Identity).
- RA Registration area of a terminal for a packet core network domain in a GPRS / UMTS network. RA is identified by RAKRouting Area Identity.
- ISRddle mode Signaling Reduction E-UTRAN (Evolved_UMTS Terrestrial Radio Access Network) and GERAN (GSM) in registered RAs and TAs EDGE (Enhanced Data Rates for Global Evolution) Radio Access Network (EDGE) / Ability to move between UTRANs without performing TAU / RAU with the core network (specifically, E / SGSN).
- E-UTRAN Evolved_UMTS Terrestrial Radio Access Network
- GSM GERAN
- EDGE Enhanced Data Rates for Global Evolution Radio Access Network
- EDGE Enhanced Data Rates for Global Evolution Radio Access Network
- EPC Evolved Packet Core
- SAE System Architecture Evolution
- SAE is a research project to determine network structure supporting mobility between various kinds of networks.
- SAE aims to provide an optimized packet-based system of Dung, which supports, for example, IP-based support for various radio access technologies and provides improved data transfer capability.
- EPC is a core network of an IP mobile communication system for 3GPP LTE system and may support packet-based real-time and non-real-time services.
- a conventional mobile communication system i.e., a second generation or third generation mobile communication system
- two distinct sub-domains of CS Circuit-Switched
- PS Packet-Switched
- the function has been implemented.
- the sub-domains of CS and PS have been unified into one IP domain.
- a connection between a terminal having an IP capability and the terminal is connected to an IP-based base station (for example, eNodeB (evolved Node B)), an EPC, an application domain (for example, IMS). It can be configured through. That is, EPC is an essential structure for implementing end-to-end IP service.
- IP-based base station for example, eNodeB (evolved Node B)
- EPC an application domain
- IMS application domain
- the EPC may include various components.
- the EPC may include various components, such as a SGW (Serving Gateway), a PDN GW (Packet Data Network Gateway), a Mobility Management Entity, and an SGSN.
- SGW Serving Gateway
- PDN GW Packet Data Network Gateway
- Mobility Management Entity e.g., MCI, MCI, MCI, MCI, or EPC.
- GPRS General Packet Radio Service
- GPRS General Packet Radio Service
- GPRS General Packet Radio Service
- GPRS General Packet Radio Service
- GPRS General Packet Radio Service
- GPRS General Packet Radio Service
- GPRS General Packet Radio Service
- GPRS General Packet Radio Service
- ePDG Enhanced Packet Data Gateway
- the SGW is an element that operates as a boundary point between a radio access network (RAN) and a core network and maintains a data path between an eNodeB and a PDN GW.
- RAN radio access network
- PDN GW Packet Data Network
- the SGW serves as a local mobility anchor point. That is, packets may be routed through the SGW for mobility in an E-UTRAN (Evolved—UMTS Jniversal Mobile Telecommunications System) Terrestrial Radio Access Network defined in 3GPP Release-8 or later.
- E-UTRAN Evolved—UMTS Jniversal Mobile Telecommunications System
- SGW also supports other 3GPP networks (RANs defined before 3GPP release-8, for example, UTRAN or GERAN (GSM) (Enhanced Data rates for Global Evolution) / EDGE Radio Access).
- GSM GERAN
- the PDN GW corresponds to the termination point of the data interface towards the packet data network.
- the PDN GW may support policy enforcement features, packet filtering, charging support, and the like.
- untrusted networks such as 3GPP networks and non-3GPP networks (eg, I-WLAN Inter working Wireless Local Area Networks), trusted networks such as CDM Code Division Multiple Access networks, or WiMax It can serve as an anchor point for mobility management with).
- SGW and the PDN GW are configured as separate gateways in the example of the network structure of FIG. 1, two gateways may be implemented according to a single gateway configuration option.
- ⁇ E performs signaling and control functions to support access to the UE's network connection, allocation of network resources, tracking, paging, roaming and handover, etc. Element.
- ⁇ E controls the control plane functions related to subscriber and session management.
- ⁇ E manages a number of eNodeBs and performs signaling for the selection of a conventional gateway for handover to another 2G / 3G network.
- E performs functions such as Security Procedures, Terminal-to-Network Session Handling, and Idle Terminal Location Management.
- SGSN handles all packet data, such as mobility management and authentication of users to other 3GPP networks (e.g., GPRS networks).
- 3GPP networks e.g., GPRS networks.
- the ePDG serves as a security node for untrusted non-3GPP networks (eg, I-WLAN, WiFi hotspots, etc.).
- untrusted non-3GPP networks eg, I-WLAN, WiFi hotspots, etc.
- a terminal having IP capability may be provided by an operator (ie, an operator) via various elements in the EPC based on 3GPP access as well as non-3GPP access.
- Access to a service network eg, IMS.
- FIG. 1 illustrates various reference points (eg, Sl-U, S1- ⁇ E, etc.).
- a conceptual link connecting two functions existing in different functional entities of E-UTRAN and EPC is defined as a reference point.
- the following Table 1 is shown in FIG. Here is a summary of the reference points.
- S2a and S2b correspond to non-3GPP interfaces.
- S2a is not related control and mobility support between the non-ol used -3GPP access and PDNGW trusted: the reference point provided on the plane.
- S2b is a reference point that provides the user plane with relevant control and mobility support between the ePDG and PDNG.
- FIG. 2 is a diagram illustrating examples of an MTC communication model.
- the MTC application is executed in the MTC device and the SCS, respectively, and interacts with each other through communication through a network.
- various models of MTC traffic may be implemented depending on what is involved in communication between the MTC application and the 3GPP network.
- 2 (a) is a model in which direct communication is performed without the SCS
- FIG. 2 (b) is a model in which the SCS exists outside the operator domain
- FIG. 2 (c) shows that the SCS is inside the operator domain. It is present in the case. 2 (a) is It corresponds to a direct communication method under the control of the 3GPP operator
- Figure 2 (b) corresponds to the communication method controlled by the service provider
- Figure 2 (c) corresponds to the communication method controlled by the 3GPP operator.
- the direct model of FIG. 2 (a) shows that the MTC application communicates directly with the UE (or MTC device) as an over-the-top (OTT) application for the 3GPP network.
- OTT over-the-top
- the indirect models of Figures 2 (b) and 2 (c) indicate that the MTC application communicates indirectly with the UE (or MTC device) using additional services provided by the 3GPP network.
- the MTC application may use SCS for additional services provided by a third-party (ie, not responsible for 3GPP) service provider.
- SCS can communicate with 3GPP networks through various interfaces.
- the MTC application may use the SCS for additional services provided by a 3GPP operator (that is, a service provider). Communication between the SCS and the 3GPP network is performed inside the PLMN. 2 (b) and 2 (c), the interface between the SCS and the MTC application is not covered by the 3GPP standard.
- the MTC communication model may be implemented as a hybrid model in which a direct model and an indirect model are used at the same time as shown in FIG.
- the MTC device can communicate with multiple SCSs in the HPLMN and differ in the capabilities provided to TC applications in the SCS controlled by the service provider and the SCS controlled by the 3GPP operator. have.
- FIG. 3 is a diagram illustrating an exemplary model of an MTC structure.
- the end-to-end application between the UE (or MTC device) and the MTC application used for the MTC may use the services provided by the 3GPP system and the optional services provided by the SCS.
- the 3GPP system may provide transport and communication services (including 3GPP bearer service, IMS and SMS) including various optimizations to facilitate MTC.
- a UE used for MTC is connected to a 3GPP network (UTRAN, E-UTRAN, GERAN, I-WLAN) via a Um / Uu / LTE-Uu interface. And the like).
- the architecture of FIG. 3 includes various MTC models described with reference to FIG. 2 above.
- the MTC application may be executed by an application server on an external network and may use an SCS for additional additional services.
- the MTC application server the above-described technology for implementing various MTC applications may be applied, and a detailed description thereof will be omitted.
- the MTC application server may access the SCS through the reference point API, and a detailed description thereof will be omitted.
- the MTC application server may be located with the SCS.
- SCSCServices Capability Server is a server on a network that manages an MTC device, and is connected to a 3GPP network and may communicate with nodes of a UE and PL ⁇ used for MTC.
- the MTC-1 WF (MTC-1 NT Workngng Function) manages the interworking between the SCS and the operator core network, and may act as a proxy of the MTC operation.
- MTC-IWFs may be present in the home PL '(HPLMN).
- the MTC-IWF can relay or interpret the signaling protocol on the reference point Tsp to activate certain functions in the PLMN.
- the MTC-IWF performs the functions of authenticating the MTC server before the MTC server establishes communication with the 3GPP network, authenticating the control plane request from the MTC server, and various functions related to the trigger instruction described below. can do.
- S Short Message Service-Service Center S-SC
- IP-SM-GW Internet Protocol Short Message GateWay
- SMS Short Message Service
- the SMS-SC may be responsible for relaying, storing-and-forwarding short messages between the Short Message Entity (SME) (an entity that sends or receives short messages) and the mobile station.
- SME Short Message Entity
- the IP-SM-GW may be responsible for protocol interaction between the IP-based UE and the SMS-SC.
- Charging Data Funct ion (CDF) / Charging Gateway Funct ion (CGF) may perform charging-related operations.
- the HLR / HSS may function to store subscriber information (IMSl lnternational Mobile Subscriber Identity, etc.), routing information, configuration information, and the like and provide the same to the MTC-IWF.
- SGSN / ⁇ E may perform a control function such as mobility management, authentication, resource allocation, etc. for the network connection of the UE.
- a function of receiving a trigger instruction from the MTC-IWF and processing the message in the form of a message provided to the MTC device may be performed.
- the Gateway GPRS Support Node (GGSN) / Serving-Gateway (S-GW) + Packet Data Network-Gateway (P-GW) may function as a gateway that manages the connection between the core network and the external network.
- PS is associated with MTC.
- MTC Mobile communications
- a network congestion or overload condition that exceeds the limit of the traffic that can be controlled by the network can be referred to as a network congestion or overload condition. This may be referred to as network shake control.
- NAS levels between the UE and nodes in the core network e.g., ⁇ E, SGW, PDN-GW, Mobile Switching Center (MSC), SGSN, GGSN
- MSC Mobile Switching Center
- the NAS level congestion control is composed of APN based congestion control and General NAS level management control.
- APN-based congestion control enables signaling congestion control according to AP / SM (or ESL (EPS Mobility Management) / ESM (EPS Session Management) protocol) to which an APN (ie, an APN associated with a congestion state) is associated.
- APN-based shake control includes APN based Session Management congestion control and APN based Mobility Management congest ion control.
- the general NAS level mobility management control may request mobility management signaling requests that are requested by the UE in a general network traffic or overload situation, such as a core network node (eg, E, SGW, PDN-GW, MSC, SGSN, GGSN). Reject means avoiding congestion and overload.
- a core network node eg, E, SGW, PDN-GW, MSC, SGSN, GGSN.
- a reject message provided to the UE may include a wait time (or an extended wait time) value. These latency values are within a range of values It is randomized and provided to the UE.
- the UE sets the received wait timer value to the backoff timer value so as not to request (E) ⁇ / (E) SM signaling to the network until the backoff timer expires.
- (E) ⁇ signaling includes, for example, an attach request, a TAU / RAU request, and the like.
- (E) SM signaling includes, for example, PDN connectivity, bearer resource allocation, bearer modification, PDP (Packet Data Protocol) context activation, PDP context modification request, and the like.
- the backoff timer may be divided into (E) ' ⁇ ' off-time timer for controlling signaling and (E) SM's back-off timer for controlling SM signaling. ⁇ The backoff timer is given per UE, and the SM backoff timer is given per per per APN and per UE, and operates independently.
- High priority service users may be, for example, users accessing the network with multimedia priority service access class 11-15.
- a TA is a registration unit of a UE and a unit for identifying a location of a UE in which E is in an idle state.
- 4 is a diagram illustrating the structure of a TAI.
- TAI is an identifier for a TA.
- TAI is composed of a combination of PLMN ID and TAC, and is an ID that can uniquely identify a TA worldwide.
- the PLMN ID includes MCCCMobile Country Code) assigned by country and MNCXMobile Network Code) assigned by service provider.
- TAC is an ID that identifies the TA within the operator's network.
- UE registration is performed by ⁇ E when the UE connects to an LTE network.
- the MME should track where the UE registered to itself is located, and transmit data to the UE when data destined for the UE is generated.
- ⁇ E knows which cell the UE is in when the UE is connected to the network, but cannot determine the location of the UE in units of cells when the UE is idle when not connected to the network. Therefore, if the UE leaves the registration area, it must inform ⁇ E which registration area it is in. do. ⁇ E may find the UE in the registration area most recently reported by the UE when the UE is idle
- This registration area may be defined in the above-described TA unit.
- a TA is a unit including one or more cells or base stations and corresponds to a larger range than a cell unit.
- the UE must report a new TA to ⁇ E if the TA where it is located changes, so that ⁇ E updates the location of the UE. If data is destined for the UE when the UE is in an idle state, ⁇ E sends a paging message to all base stations belonging to the most recently reported TA by the UE to inform the UE that there is data to receive.
- the larger the TA size the higher the probability of finding the UE early because paging is performed through many base stations. However, since the signaling overhead due to paging increases, the TA size needs to be appropriately set. That is, the TA size is one of parameters for network optimization.
- E assigns a TAI list to the UE when the UE registers with the network.
- the TAI list is a list of one or more TAs.
- the UE does not make a TAU request when moving from a current TA to a TA in the TAI list.
- the E may perform a TAU request.
- ⁇ E may allocate a different TAI list for each UE according to the TAI allocation policy.
- the RAU operation defined in GERAN / UMTS is similar to the TAU operation described above.
- RA corresponds to the registration area for the PS domain in GERAN / UMTS.
- the RA is a registration unit of the MS and a unit in which the SGSN determines the location of the MS in an idle state, and can identify the RA by the RAI 1.
- RAI consists of MCC, C, LACCLocation Area Code (RAC), and Routing Area Code (RAC).
- the MS shall inform its location by informing the SGSN of the new RA when the RA changes, and the SGSN updates the location of the MS.
- the SGSN sends a paging message to all base stations belonging to the most recently reported RA by the MS to inform the MS that there is data to receive.
- SGSN allocates RAI list to MS when MS registers with network.
- the RAI list is a list of one or more RAs.
- the MS does not make an RAU request. However, if the UE moves to an RA that is not on its current RAI list (ie, the RAI list recently registered with SGSN), or if the RAU cycle has elapsed (i.e. the RAU timer expires), TAU request can be performed.
- SGSN may allocate different RAI list for each MS according to RAI allocation policy.
- the ISR performs the TAU / RAU with the core network (specifically, E or SGSN) between the registered RAs and the E-UTRAN and the GERAN / UTRAN in the TAs. It means the ability to move without.
- the terminal may reselect between the E-UTRAN and the GERAN / UTRAN without performing an update on the network, unless it exits from the TA (s) / RA (s) registered in the network.
- the TAU / combined TAU / UE performs the TAU / RAU to both the EPS service (ie, PS domain service) and non-EPS (non-EPS) service (ie CS domain service) network It is called RAU.
- EPS service ie, PS domain service
- non-EPS non-EPS
- a paging process is performed when a network or a control node (for example, E or SGSN) requests a NAS signaling connection establishment from a terminal JE or MS, and a downlink data packet exists.
- MT-call Mobile Terminated-call
- a network for example, S / SGSN
- Paging questions may include attach requests, service requests, extended service requests, and the like.
- a network or a network control node eg, E or SGSN
- a terminal eg, UE or MS
- the network may send a paging message for EPS service via E-UTRAN using SAE-Temporary Mobile Subscriber Identity (S-TMSI) or Paging-TMSI (P-TMSI).
- S-TMSI SAE-Temporary Mobile Subscriber Identity
- P-TMSI Paging-TMSI
- IMSI attach is required for network error recovery.
- the network may use IMSI to send a paging message for EPS service over the E-UTRAN.
- the network may send a paging message for CS fallback for A / Gb or Iu mode.
- the A interface is used to connect the Circuit Switched Core Network (CSCN) and the BSSCBase Station System (CSCN), and the corresponding interface on the PS side to the A interface is the Gb interface.
- Iu mode is an interface defined to support GERAN in addition to UTRAN, and can be divided into two functional units: Iu-PS interface supporting PS service and Iu-CS interface supporting CS service.
- the network may send a paging message when a short (SM) message to the terminal occurs.
- SMS short
- the paging message may reach the terminal through the base stations corresponding to the TA / RA of the terminal known to the network. have.
- the terminal transmits the service request message to the network (or network control node ⁇ E or SGSN) as a response to the received paging message and performs the corresponding procedure.
- the UE performs the attach (ie, Attach_With ⁇ IMSI) procedure as a response to the received paging message.
- the terminal transmits an extended service request message to the network (or network control node ⁇ E or SGSN) as a response to the received paging message and performs the corresponding procedure.
- the terminal performs the paging related procedure according to i) and ⁇ ).
- the following problem may occur in the paging process when the operation of the currently defined wireless communication system is directly followed.
- the network may enjoy by setting a backoff timer to the terminal through a NAS reject message.
- the NAC rejection message may correspond to, for example, an attach rejection, a TAU rejection, a service rejection message, or the like.
- the terminal having the backoff timer set does not request a related connection or service until the backoff timer expires (that is, the backoff timer is activated). It works.
- the MM backoff timer value may be provided from a network (e.g., country E, SGSN, HSS, etc.) or from a lower layer (e.g. AS ccess Stratum), from 15 minutes to 30 minutes. Randomly set among the default values between minutes.
- the backoff timer value When the backoff timer value is provided from the network, the backoff value is set by the operator according to the network situation and policy.
- the ⁇ backoff timer value may be set from tens of minutes to several hours. That is, the terminal rejected by the network due to network congestion may perform signaling to the network after tens of minutes or hours. Accordingly, congestion control can be realized by reducing or distributing congestion or overload caused by the terminal to the network.
- the terminal when a paging message is transmitted to the terminal, the terminal may perform a paging response even if the backoff timer is running (or stops the corresponding backoff timer). .
- the terminal may not be able to respond to paging.
- a problem with performing a paging response related to the wet backoff timer may occur in the following cases.
- the first problem scenario is the case of EPS services.
- the terminal receives a TAU reject message / RAU reject message including a short backoff timer from the network A.
- the UE may be allowed to perform TAU / RAU even if the backoff timer is inoperative. However, even in this case, if the network B is also congested, the terminal receives a TAU reject message / RAU reject message including a short back off timer from the network B. That is, since the TAU / RAU for the network B is rejected when the terminal moves to the new network B, the situation in which the terminal does not recognize the new TA / RA or the new PL may be maintained.
- the network may send a paging message to find the terminal due to the generation of a downlink data packet to the terminal, the paging message is TA / RA (ie, the terminal known to the network)
- the mobile station is directed to an existing (old) PLMN or an existing TA / RA) of the network A before moving, and the terminal cannot receive a paging message.
- CS fallback Circuit-Switched fallback
- VoIP Voice over IP
- existing CS network Eg, existing 3G networks
- CS fallback means switching to the existing CS-based communication method as needed in the IP-based network.
- the second problem scenario is for CS fallback.
- the terminal receives a TAU reject message / RAU reject message including a short back off timer from the network A.
- the UE may be allowed to perform TAU / RAU even when the backoff timer is in operation.
- the terminal receives a TMJ rejection message / RAU rejection message including a short back off timer from the network B. That is, since the TAU / RAU for the network B is rejected when the terminal moves to the new network B, the situation in which the terminal does not recognize the new TA / RA or the new PLMN moved to the network side is maintained.
- the terminal receives a TAU reject message / RAU rejection message including the back off timer from the network A.
- the UE does not perform TAU / RAU because the W back off timer is still in operation.
- the UE may be allowed to perform TAU / RAU. However, even in this case, if the network B is also in a busy state, the UE may remove from the network B. A TAU reject message / RAU reject message including a backoff timer is received. That is, since the TAU / RAU for the network B is rejected when the terminal moves to the new network B, the situation in which the terminal does not recognize the new TA / RA or the new PL may be maintained.
- the network is the last known TA / RA (ie, the old (old) PLMN of the network A before the terminal is moved or The paging message is transmitted to the existing TA / RA, and the terminal cannot receive the paging message. Accordingly, there is a problem that the terminal can not receive the SMS service.
- the terminal may receive a TAU / Even if it is allowed to send a RAU request message (for example, if the UE has moved to a new network or TA / RA), the network receiving the TAU / RAU request message is again common in situations where the TAU / RAU request message is common again. Since the / RAU rejection message is received, the new location moved by the terminal cannot be registered in the network. Because of this, Since the network cannot locate the terminal and can not successfully deliver the paging message, in the worst case, there is a problem that the terminal (or user) is not provided with the service for more than several hours.
- the TAU / RAU should be processed even during the operation of the backoff timer, and in particular, if the terminal moves to a new location, the location update request of the terminal should be processed even if the network of the new location is common.
- the present invention assumes that when the UE moves to a new TA / RA or a new PLMN that is not registered, it is allowed to transmit a TAU or RAU request even while the back off timer is running.
- the terminal moves to a new TA / RA or a new PLMN that is not registered in order to provide a downlink data packet, an MT-call, and an SMS service to the terminal, the TAU / You must accept the RAU request. Accordingly, the location of the terminal can be correctly registered on the network, and when paging occurs, the paging is correctly delivered to the terminal and the terminal can respond to the paging.
- the TAU of the terminal is common.
- Various examples of the present invention for operating to accept a / RAU request are described.
- the TAU or RAU may be performed. For example, if the terminal detects an entry into a TA (or RA) that is not included in the TA list (or RA list) previously registered with the E, the UE even if the D backoff timer is running. May send a TAU / RAU request message to a network control entity (eg, E or SGSN).
- a network control entity eg, E or SGSN
- the network may accept the TAU / RAU request transmitted by the terminal.
- the network moves to a special situation as described above (that is, moves to the TA / RA / PL ⁇ where the UE is not registered).
- TAU / RAU request in the case of a TAU / RAU request) and TAU / in a general situation (for example, when a TAU / RAU request is sent by moving to a registered TA / RA / PL) RAU requests must be distinguishable.
- the indication information may be explicitly indicated using an information element (IE) in a TAU / RAU request message.
- IE information element
- a new state or new value of an EPS update type IE or an update type IE may be moved to the special situation (TA / RA / PLMN where the terminal is not registered).
- the new state or new value may be, for example, "TA updating with a new area", “combined TA / RA updating with a new area”, “RA updating with a new area", "Combined RA / LA (Locat ion) Area) updating with a new area ".
- the indication information may be indicated by additionally defining a new IE (eg, an EPS ' update status IE, or an update status IE) included in the TAU / RAU request message.
- the network may check the indication information included in the TAU / RAU request message from the terminal and determine whether to accept the TAU / RAU request when the network is in a normal situation. For example, if the indication information indicates a special situation (i.e., when the UE moves to an unregistered TA / RA / PLMN and transmits a TAU / RAU request during the ⁇ backoff timer operation), the network may be in a common situation. The TAU / RAU request may be accepted, otherwise the TAU / RAU request may be rejected.
- a special situation i.e., when the UE moves to an unregistered TA / RA / PLMN and transmits a TAU / RAU request during the ⁇ backoff timer operation
- the terminal may receive a TAU / RAU accept message from the network (for example, E / SGSN). Accordingly, after the terminal completes the location registration, if the previously set MM backoff timer is running (i.e., set by the network before moving to a new area), the terminal will not expire until the corresponding backoff timer expires. Keep it. That is, the UE cannot perform a MOCMobile Originated) service request during the power off back timer.
- the terminal may stop the backoff timer and perform a paging response (eg, a service request or an extended service request). have.
- a paging response eg, a service request or an extended service request.
- the TAU or the RAU may be performed. For example, a list of TAs (or RAs) previously registered by the UE in E In case of detecting entry into a TA (or RA) that is not included in the list), even if the back off timer is running, the UE is a TAU / RAU as a network control entity (for example, E or SGSN).
- the request message can be sent.
- the network eg, E / SGSN
- the network may accept a TAU / RAU request transmitted by the terminal.
- the network moves to a special situation as described above (that is, moves to a TA / A / PLL in which the UE is not registered, TAU / RAU request in the case of sending a TAU / RAU request) and in a general situation (for example, when sending a TAU / RAU request by moving to a rounded TA / RA / PLMN, etc.)
- a special situation that is, moves to a TA / A / PLL in which the UE is not registered, TAU / RAU request in the case of sending a TAU / RAU request
- a general situation for example, when sending a TAU / RAU request by moving to a rounded TA / RA / PLMN, etc.
- indication information included in the TAU / RAU request message transmitted from the terminal to the network may be used.
- the indication information may be implicitly indicated from information included in the TAU / RAU request message.
- the network uses information previously defined in the TAU / RAU request message (for example, region indication information) to perform the corresponding TAU / RAU request because the UE moves to a new region where the terminal is not registered. Can be determined.
- the network may use a TAI value (e.g., a value of 'Last visited registered ⁇ IE') or a RAI value (e.g., 'routing area identification' IE or Old routing area identification 'IE , Etc.) and the TAI value or RAI value of the current network. In comparison, if they are different from each other, the terminal moves to a new area that is not registered.
- the network operates to accept the TAU / RAU request, even in a noisy situation.
- the terminal may receive a TAU / RAU accept message from the network (eg, E / SGSN). Accordingly, after the terminal finishes the location registration, if the previously set (i.e., set by the network before moving to a new area) is in operation, until the corresponding back back timer expires. Keep it. That is, the UE cannot perform an XMobile Originated) service request during the WT backoff timer operation.
- the network eg, E / SGSN
- the terminal may immediately perform a paging question (eg, a service request or an extended service request).
- a paging question eg, a service request or an extended service request.
- the TAU or the RAU may be performed. For example, if the terminal detects an entry into a TA (or RA) that is not included in a TA list (or RA list) previously registered with the UE, the UE may be operated even if the UE backoff timer is running.
- a TAU / RAU request message can be sent to a network control entity (eg, ⁇ E or SGSN).
- the network eg, E / SGSN
- the network may accept a TAU / RAU request transmitted by the terminal.
- the network moves to a special situation as described above (ie, TA / RA / PLL in which the UE is not registered and increases the power back off timer operation).
- the TAU / RAU should be distinguished from a general situation (for example, when moving to a registered TA / RA / PLMN and sending a TAU / RAU request).
- the indication information included in the TAU / RAU request message transmitted by the UE to the network may be used.
- the indication information may be configured by a combination of the first and second embodiments.
- explicit information indicating that the UE is performing a TAU / RAU request because it has moved to a new unregistered area eg, EPS update type IE, update type IE, EPS update situation IE, update situation.
- a TAU / RAU request message including a specific state or a specific value such as an IE and previously defined region indication information (for example, a TAI value or an RAI value) may be transmitted to a network.
- the network axis checks the value of the indication information in the received TAU / RAU request message (e.g., whether the IE of the EPS update type is set to a specific value) and / or the value of the information stored in the network axis.
- the network may not transmit the TAU / RAU even if it is congested. It can accept the request.
- the network can accept the TAU / RAU request even if it is congested. If not, the network may not accept the TAU / RAU request message if it is congested, or may accept the TAU / RAU request message if not.
- the terminal may receive a TAU / RAU accept message from the network (eg, E / SGSN). Accordingly, after the terminal finishes the location round, if the previously set (i.e., set by the network before moving to a new area) is the operation, until the corresponding back off timer expires. Keep it. That is, the UE cannot perform a Mobile Originated (M0) service request during the back off timer operation. After the paging message is received, the terminal may immediately perform a paging response (eg, a service request or an extended service request).
- a paging response eg, a service request or an extended service request.
- the indication information included in the TAU / RAU request messages proposed in the first to third embodiments may indicate only whether the TAU / RAU request of the terminal is performed because the terminal moves to a new area not specific. It does not indicate whether the terminal performs the TAU / RAU during the sleep backoff timer operation set from the previous network. However, as described above, in the prior art, the terminal does not transmit a TAU / RAU request message to the network during the back-off timer operation, but according to the operation of the terminal assumed in the present invention, even if the terminal is in the operation of the back-off timer. If you move to a new unregistered area (TA / RA / PL), you can send a TAU / RAU request message as an exception.
- transmitting a TAU / RAU request message means that the backoff timer is not running or the backoff timer is operational. Includes the meaning that a TMJ / RAU request message is sent.
- This TAU / RAU should be accepted even if the network is crowded.
- the network does not check whether the back off timer is operating in the terminal, whether the TAU / RAU of the terminal is performed due to the movement to an unregistered area (or not registered in the network position).
- the TAU / RAU request from the terminal that has not been received by the network may operate by accepting the corresponding TAU / RAU request even if the network is congested.
- the network operates to accept the corresponding TAU / RAU request even in a congested situation, thereby solving the above-mentioned problems of the prior art.
- the UE may transmit an area update request message (eg, a TAU / RAU request message, a combined TAU / RAU request message, or a location update request message) including the indication information to the network.
- the indication information may indicate whether the area update request message is performed due to movement to an unregistered area.
- the indication information may be configured according to the first to third embodiments.
- the WT off timer may be operating in the UE at the time when step S510 is performed.
- the area update request message cannot be transmitted when the backoff timer is in operation.
- the area update request message is allowed to be transmitted.
- the present invention assumes the operation of the terminal, and proposes a method of processing an area update message transmitted in the exceptional situation in a network.
- step S520 it is determined whether the network is in the network. If the network is not congested, the area update request message may be accepted (ie, proceed to step S540). If the network is congested, the flow proceeds to step S530.
- the network may determine whether to accept the region update request based on the indication information included in the region update request message. For example, if the indication information indicates that the terminal is an area update request transmitted when the terminal moves to a new area that is not registered (or moves to a new area that is not rounded during the operation of a back off timer) (i.e., network In case of an area update request from an unregistered terminal), the area update may be accepted (step S540). If it is not an area update request from a terminal moving to a new unregistered area, the area update request may not be accepted.
- FIG. 6 is a flowchart illustrating a TAU operation according to an example of the present invention.
- step 1 of FIG. 6 it may be triggered to start a TAU procedure at the UE.
- the operation of triggering the TAU procedure may be performed if the terminal moves to a new area in which the terminal is not registered even when the terminal is in the backoff timer operation.
- the backoff timer may be a national backoff timer included in a NAS reject message received from a previous network before the terminal moves.
- the terminal indicates the TAU request message generated when the terminal moves to a new area (for example, TA) that is not registered in the TAU request message (the above embodiment). 1 to 3).
- the UE may transmit a TAU request (or a combined TAU request) to a new E via the eNB.
- a new Z E and a new SGW may correspond to X E and SGW related to a new location area of the UE, and the old (old) E and the existing SGW may be to E E and SGW related to the previous location area of the UE.
- the network may determine whether the network is congested.
- the TAU request message can be accepted if the network is not congested. If the network is crowded, it may be determined whether to accept the TAU request by checking the indication information included in the TAU request message. For example, a new fflE receiving a TAU request message including indication information indicating that the terminal moves to a new unregistered area may operate to accept the TAU request of the terminal even if the network is in a congested state. .
- the TAU request when the indication information explicitly indicates that the TAU request has occurred when the UE moves to a new area that is not rounded, the TAU request is accepted. If not, the TAU request may not be accepted.
- the network compares the TAI value included in the TAU request message with the TAI value previously owned by the network, and when the terminal moves to a new area that is not registered, in a different case. It is determined that the TAU request has occurred implicitly and accepts the TAU request. If the TAI value in the TAU request message and the TAI value of the network are the same, the TAU request may not be accepted.
- the network may determine whether to accept the TAU request by combining the indication information of the first and second embodiments.
- the new ⁇ E may exchange a context request message and a context response message with the existing E / SGGSN.
- step 6 of FIG. 6 information related to authentication and / or security may be exchanged between the UE and the new ⁇ E, and also between the new EE and the HSS.
- step 7 of FIG. 6 the new K E may send a context acknowledgment (ACK) message indicating that the new K E has successfully received the context information.
- ACK context acknowledgment
- An operation of the network (for example, new ⁇ E) that determines whether to accept the TAU request based on whether the network is shaken and the indication information included in the TAU request message may be performed after step 7.
- the new ⁇ E may send a create session request message to the new SGW for creating a session.
- the new SGW may send a bearer modify request message to the PGW based on the information included in the session creation request message.
- the PGW may send a bearer modification response message to the new SGW in response to the bearer modification request message, and the new SGW may send a session creation response message to the new ⁇ E.
- Step 9a of FIG. 6 is an optional procedure, in which PCRF interaction for the operator policy is initiated by the PGW's Policy and Charging Enforcement Function (PCEF) and performed between the PCEF and the PCRF as necessary.
- PCEF Policy and Charging Enforcement Function
- modification of an IP-CAN (Connectivity Access Network) session which is an access network providing IP connectivity, may be performed.
- IP-CAN is a term referring to various IP-based access networks, for example, may be GPRS or EDGE, which is a 3GPP access network, or may be a WLAN or DS Digital subscriber line (WLAN) network.
- the new V E may provide the HSS with updated location information of the UE, and the HSS may keep it.
- the HSS may send a cancellation message for the location information of the UE to the existing location E / SGSN, and thus the existing location E / SGSN may cancel the location of the UE and send an acknowledgment message to the HSS.
- the existing UE E / SGSN may send an Iu release release message to the RNC, and the RNC sends an Iu release completion message to the existing UE E / SGSN. Can be sent to
- the HSS may send an ACK message to the new V E about the UE location update.
- the existing SGW sends a delete session request message to the existing SGW, and the existing SGW sends a delete session response to the existing SGW. ) You can send a message.
- a new ⁇ E sends a TAU accept message to the UE and the UE sends a TAU completion message in response to the TAU procedure to be completed.
- the terminal receiving the TAU accept message from the network if the previously set (i.e., set by the network before moving to a new area) is running, the corresponding backoff timer expires. Keep it. That is, the UE cannot perform an MCKMobile Originated) service request during the power off back timer. However, if a paging message is received while the backoff timer is in operation, the terminal stops the backoff timer and sends a paging response (eg, a service request or an extended service request). ) Can be performed.
- a paging response eg, a service request or an extended service request.
- FIG. 7 is a flowchart illustrating an RAU operation according to an example of the present invention.
- step 1 of FIG. 7 it is assumed that the UE changes to an operation mode according to UTRAN / GERAN or moves to an UTRAN / GERAN system area in the E-UTRAN.
- it may be triggered to start the RAU procedure at the UE.
- the operation of triggering the RAU procedure may be performed if the terminal moves to a new area that is not registered even though the terminal is operating the backoff timer.
- the backoff timer may be a backoff timer included in a NAS reject message received from a previous network before the terminal moves.
- the terminal When the start of the RAU procedure of the terminal is triggered, the terminal indicates the RAU request message generated when the terminal moves to a new area (eg, RA) that is not registered in the RAU request message (the above embodiment). 1 to 3).
- a new area eg, RA
- the UE may transmit a RAU request to the SGSN via the RNC / BSS.
- the network may determine whether the network is busy.
- the RAU request message can be accepted if the network is not congested. If the network is congested, check the indication information contained in the RAU request message to confirm the RAU. It may be determined whether to accept the request. For example, the SGSN receiving the RAU request message including the indication information indicating that the terminal moves to a new unregistered area may operate to accept the RAU request of the terminal even if the network is in a congested state.
- the RAU request when the indication information explicitly indicates that the RAU request has occurred when the UE moves to a new area where the UE is not registered, the RAU request is accepted. If not, the RAU request may not be accepted.
- the network compares the RAI value included in the RAU request message with the RAI value previously owned by the network. If it is determined that the RAU request has occurred implicitly and accepts the RAU request, and if the RAI value and the RAI value of the network in the RAU request message are the same, the RAU request may not be accepted.
- the network may determine whether to accept the RAU request by combining the indication information of the first and second embodiments.
- steps 3 to 7 of FIG. 7 is based on operations of steps 4 to 7 described with reference to FIG. 6.
- the existing fin E of FIG. 6 corresponds to the fin E of FIG. 7, and the new fin E of FIG. 6 corresponds to the SGSN of FIG. Accordingly, the new control node (SGSN) obtains the context information from the existing control node ( ⁇ E), and an authentication / security procedure with the HSS and the UE may be performed.
- An operation of the network that determines whether to accept the RAU request based on whether the network is shaken and the indication information included in the RMJ request message may be performed after step 7.
- the SGSN may send a bearer modification request message to the PGW via the SCT for bearer establishment.
- the PGW may send a bearer modification response message to the SGSN via the SGW in response to the bearer modification request message.
- Step 9 is an optional procedure, and if necessary, a procedure for modifying an IP-CAN session initiated by the PCEF may be performed.
- the SGSN may provide updated location information of the UE to the HSS, which may store the HSS.
- HSS locates UE to existing SGSN
- the cancellation message for the information can be sent, so that the existing SGSN can cancel the UE's location and send an acknowledgment message to the HSS.
- an S1 interface release procedure may be performed at the eNB E and the eNB related to the existing location of the UE. May send an S1 release command message to the eNB using an SI AP (application protocol). Accordingly, the eNB may release the E-UTRAN connection and send an S1 release complete message to the E.
- SI AP application protocol
- the HSS may send an ACK message for the UE location update to the SGSN.
- the SGSN sends an AU accept message to the UE, and the UE sends an RAU completion message in response thereto, so that the RAU procedure may be completed.
- the terminal receiving the RAU accept message from the network if the previously set (i.e., set by the network before moving to a new area) is operation, until the corresponding backoff timer expires. Keep it. That is, the UE cannot perform the XMobile Originated) service request during the WT backoff timer operation. However, when the paging message is received due to the operation of the back off timer, the terminal stops the back off timer and the paging response (for example, a service request or an extended service request). )).
- the UE may send a service request message to the SGSN if necessary.
- the SGSN may send a Radio Access Bearer (RAB) assignment request to the RNC / BSS, and the RNC / BSS may send a RAB assignment response message to the SGSN.
- RAB Radio Access Bearer
- the SGSN may send a bearer modification request message to the SGW, and the SGW may send a bearer modification response message to the SGSN. Accordingly, a radio bearer for the UE can be allocated and a service can be provided.
- FIG. 8 is a diagram illustrating a configuration of a preferred embodiment of a terminal device according to an example of the present invention.
- the terminal device 1000 may include a transmission / reception module 1100, a processor 1200, and a memory 1300.
- the transmission / reception modules 1100 may be configured to transmit various signals, data, and information to an external device, and to receive various signals, data, and information from the external device.
- the terminal device 1000 may be connected to an external device by wire and / or wirelessly.
- the processor 1200 may control the overall operation of the terminal device 1000, and may be configured to perform a function of calculating and processing information to be transmitted / received with an external device.
- the processor 1200 may be configured to perform a terminal operation proposed in the present invention.
- the memory 1300 may store the computed information for a predetermined time and may be replaced with a component of a buffer (not shown).
- the network node apparatus 2000 may include transmission / reception modules 2100, a processor 2200, and a memory 2300.
- the transmit / receive modules 2100 may be configured to transmit various signals, data and information to an external device, and to receive various signals, data and information to an external device. Or wirelessly connected.
- the processor 2200 may control the overall operation of the network node device 2000, and may be configured to perform a function of the network node device 2000 to process and process information to be transmitted and received with an external device.
- the processor 2200 may be configured to perform a network node operation proposed in the present invention.
- the memory 2300 may store the processed information for a predetermined time and may be replaced with a component such as a buffer (not shown).
- terminal apparatus 1000 and the network apparatus 2000 as described above may be independently applied to the above-described various methods and / or embodiments of the present invention, or two or more methods and / Alternatively, the embodiments may be implemented to be applied at the same time, and overlapping contents will be omitted for clarity.
- embodiments of the present invention may be implemented through various means.
- embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.
- the method according to the embodiments of the present invention may include one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), and RU Programmable Logic. Devices), FPGAs (Field Programmable Gate Arrays), processors, controllers, microcontrollers, and microprocessors.
- ASICs Application Specific Integrated Circuits
- DSPs Digital Signal Processors
- DSPDs Digital Signal Processing Devices
- FPGAs Field Programmable Gate Arrays
- processors controllers, microcontrollers, and microprocessors.
- the method according to the embodiments of the present invention may be implemented in the form of modules, procedures, or functions that perform the functions or operations described above.
- the software code may be stored in a memory unit and driven by a processor.
- the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
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- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
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US14/400,729 US9510234B2 (en) | 2012-06-28 | 2013-06-26 | Method and device for updating area in wireless communication system |
EP13809668.0A EP2869610B1 (en) | 2012-06-28 | 2013-06-26 | Method and device for updating area in wireless communication system |
KR1020147031720A KR20150032524A (ko) | 2012-06-28 | 2013-06-26 | 무선 통신 시스템에서 영역 갱신 방법 및 장치 |
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US61/665,902 | 2012-06-29 |
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EP (1) | EP2869610B1 (ko) |
KR (1) | KR20150032524A (ko) |
WO (1) | WO2014003431A1 (ko) |
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CN115190581B (zh) * | 2016-07-01 | 2024-05-14 | 瑞典爱立信有限公司 | 用于用户设备(ue)注册的系统和方法 |
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JP6884730B2 (ja) * | 2018-06-21 | 2021-06-09 | シャープ株式会社 | Ue通信制御方法 |
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KR20240033082A (ko) * | 2021-08-04 | 2024-03-12 | 애플 인크. | 비지상 네트워크들에 대한 조건부 핸드오버들 |
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Also Published As
Publication number | Publication date |
---|---|
US20150131437A1 (en) | 2015-05-14 |
EP2869610A4 (en) | 2016-03-09 |
US9510234B2 (en) | 2016-11-29 |
EP2869610A1 (en) | 2015-05-06 |
KR20150032524A (ko) | 2015-03-26 |
EP2869610B1 (en) | 2017-06-21 |
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