WO2013125615A1 - 移動局及び通信方法 - Google Patents
移動局及び通信方法 Download PDFInfo
- Publication number
- WO2013125615A1 WO2013125615A1 PCT/JP2013/054263 JP2013054263W WO2013125615A1 WO 2013125615 A1 WO2013125615 A1 WO 2013125615A1 JP 2013054263 W JP2013054263 W JP 2013054263W WO 2013125615 A1 WO2013125615 A1 WO 2013125615A1
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- WO
- WIPO (PCT)
- Prior art keywords
- bearer
- mobile station
- registration
- multimedia subsystem
- access network
- Prior art date
Links
- 238000004891 communication Methods 0.000 title abstract description 29
- 238000000034 method Methods 0.000 title abstract description 13
- 238000010295 mobile communication Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- 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
- H04W76/00—Connection management
- H04W76/10—Connection setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1073—Registration or 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
-
- 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
- H04W60/005—Multiple registrations, e.g. multihoming
-
- 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
- H04W60/06—De-registration or detaching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
Definitions
- the present invention relates to a mobile station connectable to an access network according to the Internet protocol and a communication method.
- IP-CAN IP-Connectivity Access Network
- Fig. 1 shows the communication sequence when the mobile station establishes IP-CAN Bearer and then IP-CAN Bearer is released by handover to UTRAN / GERAN. As shown in FIG. 1, when the mobile station executes a handover to UTRAN / GERAN (S10), the IP-CAN Bearer is released (S20).
- the conventional IP-CAN Bearer release procedure described above has the following problems. That is, as shown in FIG. 1, the mobile station performs registration to IP multimedia core network Subsystem (IMS) composed of Policy Charging Rules Function (PCRF) and Primary-Call Session Control Function (P-CSCF). After execution, if the IP-CAN ⁇ Bearer is released due to the handover of the mobile station to UTRAN / GERAN, etc., the registration state of the mobile station in IMS (specifically, P-CSCF) remains, and the IP- Holds the state where CAN Bearer does not exist.
- IMS IP multimedia core network Subsystem
- PCRF Policy Charging Rules Function
- P-CSCF Primary-Call Session Control Function
- FIG. 2 shows an example of a state in which the registration state of the mobile station in the IMS remains even if the IP-CAN Bearer is released.
- FIG. 2 shows a communication sequence when the mobile station returns to LTE after executing a handover to UTRAN / GERAN.
- a session establishment request (Create (Session Request) is transmitted to Packet Data Network Gateway (PGW) ((1) in the figure).
- PGW Packet Data Network Gateway
- the PGW cannot notify the P-CSCF that the IP-CAN Bearer has been reestablished and restored.
- the present invention has been made in view of such a situation, and even when IP-CAN Bearer, which is a logical communication path for SIP and voice media, is released for some reason, it is impossible to receive an incoming call. It is an object of the present invention to provide a mobile station and a communication method that can prevent a state in which an error occurs from continuing for a long time.
- a mobile station that is connectable to an access network according to an Internet protocol and performs registration with an IP multimedia subsystem according to the Internet protocol, the mobile station comprising: A bearer establishment unit that establishes a bearer that is a logical communication path with the gateway device that constitutes the access network, and when the bearer establishment unit establishes the bearer, the movement to the IP multimedia subsystem
- the gist of the present invention is to provide a registration processing unit that performs registration of a station.
- a communication method in a communication apparatus that is connectable to an access network in accordance with an Internet protocol and performs registration in an IP multimedia subsystem in accordance with the Internet protocol.
- FIG. 1 is a diagram showing a communication sequence when IP-CAN Bearer is released in a conventional mobile communication system.
- FIG. 2 is a diagram illustrating an example of a state in which the registration state of the mobile station in the IMS remains even when the IP-CAN Bearer is released in the conventional mobile communication system.
- FIG. 3 is an overall schematic configuration diagram of the mobile communication system according to the embodiment of the present invention.
- FIG. 4 is a functional block configuration diagram of the mobile station according to the embodiment of the present invention.
- FIG. 5 is an operation flow (part 1) of the mobile station according to the embodiment of the present invention.
- FIG. 6 is an operation flow (part 2) of the mobile station according to the embodiment of the present invention.
- FIG. 3 is an overall schematic configuration diagram of the mobile communication system 10 according to the present embodiment.
- the mobile communication system 10 includes a mobile station 100 (hereinafter referred to as UE 100), an IP-Connectivity Access Network 200 (hereinafter referred to as IP-CAN 200), and an IP Multimedia core network Subsystem 300 (hereinafter referred to as IMS 300).
- UE 100 mobile station 100
- IP-CAN 200 IP-Connectivity Access Network 200
- IMS 300 IP Multimedia core network Subsystem
- the UE 100 can execute wireless communication according to the Long Term Evolution (LTE) and 3G (W-CDMA) systems.
- UE 100 can be connected to IP-CAN 200 according to LTE or 3G.
- UE100 performs Registration of UE100 to IMS300 via IP-CAN200.
- the UE 100 can perform registration of the UE 100 to the IMS 300 according to the Registration procedure defined in Section 5.1.1.1 or L3.1.2 of 3GPP TS24.229.
- IP-CAN200 is an access network according to the Internet Protocol (IP). Specifically, the IP-CAN 200 is a network that provides a Session Initiation Protocol (SIP) and audio media transport function, and corresponds to an LTE / Evolved Packet Core (EPC) network in this embodiment.
- IP Internet Protocol
- SIP Session Initiation Protocol
- EPC Evolved Packet Core
- IP-CAN200 includes Mobility Management Entity (MME), Serving Gateway (SGW), Packet Data Network Gateway (PGW), Policy and Charging Rules Function (PCRF), and SGSN (Serving GPRS Support Node).
- MME Mobility Management Entity
- SGW Serving Gateway
- PGW Packet Data Network Gateway
- PCRF Policy and Charging Rules Function
- SGSN Serving GPRS Support Node
- MME is an exchange that accommodates eNodeB (radio base station) and provides mobility control and bearer control functions.
- the SGW is a visited packet switch that accommodates a 3GPP (LTE) access system.
- the PGW is a connection point with the IMS platform, and is a packet switch that performs IP address assignment and packet transfer to the SGW.
- the PGW performs QoS control, bearer setting control, and the like in cooperation with the PCRF.
- the PCRF is a logical node that executes control for QoS and charging for user data transfer.
- SGSN is a packet switch that accommodates a UTRAN (3G) access system.
- IMS300 is a multimedia subsystem according to the Internet protocol, Primary-Call-Session Function (P-CSCF), Interrogating -Call Session Control Function (I-CSCF), Serving-Call Session Control Function (S-CSCF) And Application Server (AS).
- P-CSCF Primary-Call-Session Function
- I-CSCF Interrogating -Call Session Control Function
- S-CSCF Serving-Call Session Control Function
- AS Application Server
- P-CSCF is a SIP relay server located at the connection point with EPC. In addition to SIP transfer, P-CSCF works with EPC (PCRF) to activate QoS control and recognize the status of IP-CAN Bearer It has a function to do.
- the IMS 300 is connected to another network (such as a fixed telephone network).
- FIG. 4 is a functional block configuration diagram of UE 100.
- the UE 100 includes a bearer establishment unit 110 and a registration processing unit 120.
- the UE 100 can be connected to the IP-CAN 200 and performs registration with the IMS 300.
- it operates as a terminal (communication device) that processes a voice call (VoLTE) via LTE.
- VoIP voice call
- the bearer establishment unit 110 establishes an IP-CAN Bearer that is a logical communication path between the UE 100 and the PGW constituting the IP-CAN 200.
- IP-CAN Bearer is a communication path (bearer) for SIP and voice media transfer set in IP-CAN200.
- the registration processing unit 120 executes registration of the UE 100 with the IMS 300 when the bearer establishment unit 110 establishes IP-CAN Bearer.
- the registration processing unit 120 includes a non-access-stratum layer 121 (hereinafter referred to as a NAS layer 121) and an upper layer 123 positioned above the NAS layer 121.
- the NAS layer 121 detects the establishment of the IP-CAN Bearer by the bearer establishment unit 110 and notifies the upper layer 123 of the establishment of the IP-CAN Bearer.
- the upper layer 123 executes the registration of the UE 100 to the IMS 300 based on the IP-CANIPBearer establishment notification received from the NAS layer 121.
- the upper layer 123 is specifically an IMS application, and when the IP-CAN Bearer is established by the bearer establishment unit 110, the UE 100 registration to the IMS 300 is always executed.
- the registration timing may be within a predetermined time after the IP-CAN Bearer is established, or when the bearer establishment unit 110 is notified that the IP-CAN Bearer is established, the IP-CAN Bearer is actually It may be before Bearer is established.
- FIG. 5 is an operation flow related to registration by the UE 100.
- UE100 establishes IP-CAN-Bearer (S110). Specifically, bearer establishment section 110 establishes PGW and IP-CAN Bearer in a predetermined state (for details, refer to the communication sequence in FIG. 2 described above).
- the predetermined state is, for example, a case where the UE 100 returns to LTE after executing a handover to UTRAN (3G), or re-establishes an IP-CANerBearer that is disconnected due to a network failure or the like.
- FIG. 6 is an operation flow related to registration by the UE 100.
- the UE 100 cancels the IMS Registration state. May be in the Deregistered state. Specifically, when detecting that the IP-CAN-Bearer has been released, the NAS layer 121 detects that the IP-CAN Bearer has been released. Notify that it has been released (S220). Next, the upper layer 123 cancels the IMS Registration state of the UE 100 (terminal) and sets it to the Deregistered state (S230).
- the NAS layer 121 has established the IP-CAN Bearer, specifically, the IP-CAN Bearer establishment procedure is completed ( (See FIG. 2) (S120).
- the NAS layer 121 detects that the IP-CAN Bearer has been established, it notifies the upper layer 123 (IMS application) that the IP-CAN Bearer has been established (S130).
- the upper layer 123 When the upper layer 123 receives the notification that the IP-CAN Bearer has been established from the NAS layer 121, it starts the IMS Registration procedure (S140). When the IMS Registration procedure is activated by the upper layer 123, the UE 100 Registration to the IMS 300 is executed.
- UTRAN 3G
- GERAN (2G) may be used instead of UTRAN.
- the registration processing unit 120 is configured by the NAS layer 121 and the upper layer 123.
- the NAS layer 121 may execute the registration of the UE 100 to the IMS 300.
- the first feature of the present invention is that the UE 100 (mobile) that can be connected to an IP-CAN 200 (access network) according to the Internet protocol and performs registration with the IMS 300 (IP multimedia subsystem) according to the Internet protocol.
- a bearer establishment unit 110 (bearer establishment) that establishes an IP-CAN Bearer that is a logical communication path between the mobile station and the PGW (gateway device) constituting the access network.
- a registration processing unit 120 registration processing unit that performs registration of the mobile station in the IP multimedia subsystem when the bearer establishment unit establishes the bearer.
- the registration processing unit is based on a NAS layer 121 (NAS layer) for detecting the bearer establishment by the bearer establishment unit, and the bearer establishment notification received from the NAS layer. And an upper layer 123 (upper layer) that executes registration of the mobile station in the IP multimedia subsystem.
- NAS layer NAS layer
- upper layer 123 upper layer
- the registration processing unit is based on a NAS layer 121 (NAS layer) that detects the release of the bearer by the bearer establishment unit, and the bearer disconnection notification received from the NAS layer. And an upper layer 123 (upper layer) for releasing the registration state of the mobile station in the IP multimedia subsystem.
- NAS layer NAS layer
- upper layer 123 upper layer
- a second feature of the present invention is a communication method in UE 100 (communication device) that is connectable to an access network according to the Internet protocol and performs registration in the IP multimedia subsystem according to the Internet protocol. Establishing a bearer that is a logical communication path between the communication device and a gateway device that constitutes the access network, and, when establishing the bearer, the mobile station to the IP multimedia subsystem And the step of executing registration.
- IP-CAN Bearer which is a logical communication path for SIP and voice media
- IP-CAN Bearer which is a logical communication path for SIP and voice media
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
図3は、本実施形態に係る移動通信システム10の全体概略構成図である。図3に示すように、移動通信システム10は、移動局100(以下、UE100)、IP-Connectivity Access Network 200(以下、IP-CAN200)及びIP Multimedia core network Subsystem 300(以下、IMS300)によって構成される。
図4は、UE100の機能ブロック構成図である。図4に示すように、UE100は、ベアラ確立部110及び登録処理部120を備える。上述したように、UE100は、IP-CAN200に接続可能であり、IMS300への登録を実行する。特に、本実施形態では、LTEを経由した音声通話呼(VoLTE)を処理する端末(通信装置)として動作する。
次に、UE100によるIMS300へのRegistrationを実行に関する動作について説明する。図5は、UE100によるRegistrationに関する動作フローである。
上述したUE100によれば、ベアラ確立部110によってIP-CAN Bearerが確立された場合、登録処理部120が必ずIMS300へのUE100のRegistrationを実行する。このため、IP-CAN Bearerが何らかの原因で解放される一方で、IMS300にUE100のRegistrationが残存し、IMS300(具体的にはP-CSCF)他網に向けてエラー応答(Service Unavailable)の送信を継続してしまう問題を解消し得る。具体的には、IP-CAN Bearerが何らかの原因で解放された後、UE100がIP-CAN Bearerを再確立し、IMS300を介した通信が可能になったにも拘わらず、P-CSCFが、他網に向けてエラー応答(Service Unavailable)の送信を継続してしまう状態を回避し得る。
上述したように、本発明の一実施形態を通じて本発明の内容を開示したが、この開示の一部をなす論述及び図面は、本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態が明らかとなろう。
100…UE
110…ベアラ確立部
120…登録処理部
121…NASレイヤ
123…上位レイヤ
200…IP-CAN
300…IMS
Claims (4)
- インターネットプロトコルに従ったアクセスネットワークに接続可能であり、前記インターネットプロトコルに従ったIPマルチメディアサブシステムへの登録を実行する移動局であって、
前記移動局と、前記アクセスネットワークを構成するゲートウェイ装置との間における論理的な通信経路であるベアラを確立するベアラ確立部と、
前記ベアラ確立部が前記ベアラを確立する場合、前記IPマルチメディアサブシステムへの前記移動局の登録を実行する登録処理部と
を備える移動局。 - 前記登録処理部は、
前記ベアラ確立部による前記ベアラの確立を検出するNASレイヤと、
前記NASレイヤから受信した前記ベアラの確立通知に基づいて、前記IPマルチメディアサブシステムへの前記移動局の登録を実行する上位レイヤと
を含む請求項1に記載の移動局。 - 前記登録処理部は、
前記ベアラ確立部による前記ベアラの解放を検出するNASレイヤと、
前記NASレイヤから受信した前記ベアラの切断通知に基づいて、前記移動局の前記IPマルチメディアサブシステムへの登録状態を解除する上位レイヤと
を含む請求項1に記載の移動局。 - インターネットプロトコルに従ったアクセスネットワークに接続可能であり、前記インターネットプロトコルに従ったIPマルチメディアサブシステムへの登録を実行する通信装置における通信方法であって、
前記通信装置と、前記アクセスネットワークを構成するゲートウェイ装置との間における論理的な通信経路であるベアラを確立するステップと、
前記ベアラを確立する場合、前記IPマルチメディアサブシステムへの前記移動局の登録を実行するステップと
を有する通信方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2014010145A MX2014010145A (es) | 2012-02-24 | 2013-02-21 | Estacion movil y metodo de comunicacion. |
EP13751636.5A EP2819469A4 (en) | 2012-02-24 | 2013-02-21 | MOBILE STATION AND COMMUNICATION PROCESS |
KR20147023932A KR20140135955A (ko) | 2012-02-24 | 2013-02-21 | 이동국 및 통신방법 |
US14/380,084 US20150016380A1 (en) | 2012-02-24 | 2013-02-21 | Mobile station and communication method |
CN201380010577.4A CN104145515A (zh) | 2012-02-24 | 2013-02-21 | 移动台以及通信方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2012-038491 | 2012-02-24 | ||
JP2012038491A JP5337889B2 (ja) | 2012-02-24 | 2012-02-24 | 移動局及び通信方法 |
Publications (1)
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WO2013125615A1 true WO2013125615A1 (ja) | 2013-08-29 |
Family
ID=49005795
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PCT/JP2013/054263 WO2013125615A1 (ja) | 2012-02-24 | 2013-02-21 | 移動局及び通信方法 |
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US (1) | US20150016380A1 (ja) |
EP (1) | EP2819469A4 (ja) |
JP (1) | JP5337889B2 (ja) |
KR (1) | KR20140135955A (ja) |
CN (1) | CN104145515A (ja) |
MX (1) | MX2014010145A (ja) |
WO (1) | WO2013125615A1 (ja) |
Families Citing this family (3)
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US10123372B2 (en) * | 2015-09-30 | 2018-11-06 | Apple Inc. | Device, system and method to avoid voice call setup failure due to network congestion |
CN108924893B (zh) * | 2017-04-26 | 2020-12-25 | 中国移动通信有限公司研究院 | 一种承载释放方法、装置、mme及sae-gw |
EP3949306A1 (en) * | 2019-04-02 | 2022-02-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Ims registration |
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US8515421B2 (en) * | 2005-11-12 | 2013-08-20 | Interdigital Technology Corporation | IMS enabled attach procedure for LTE |
CN101573933B (zh) * | 2006-11-06 | 2012-08-08 | 艾利森电话股份有限公司 | 用于保证以每个用户设备为基础的服务要求进入承载的设备和方法 |
US8195158B2 (en) * | 2007-07-05 | 2012-06-05 | Synchronica Plc | Maintaining IMS registration while disconnected from IP bearer |
US8537822B2 (en) * | 2008-11-10 | 2013-09-17 | Research In Motion Limited | Methods and apparatus for providing alternative paths to obtain session policy |
EP2449825B1 (en) * | 2009-06-29 | 2016-12-07 | BlackBerry Limited | System and methods for accessing voice services based on voice service indicators in an evolved packet system |
US20110051701A1 (en) * | 2009-08-27 | 2011-03-03 | Yigang Cai | Ims deregistration of a dual mode device triggered through a legacy network |
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JP5342511B2 (ja) * | 2010-06-16 | 2013-11-13 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信方法及び呼セッション制御サーバ装置 |
JP4892084B2 (ja) * | 2010-06-16 | 2012-03-07 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信方法 |
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2012
- 2012-02-24 JP JP2012038491A patent/JP5337889B2/ja active Active
-
2013
- 2013-02-21 MX MX2014010145A patent/MX2014010145A/es not_active Application Discontinuation
- 2013-02-21 CN CN201380010577.4A patent/CN104145515A/zh active Pending
- 2013-02-21 WO PCT/JP2013/054263 patent/WO2013125615A1/ja active Application Filing
- 2013-02-21 EP EP13751636.5A patent/EP2819469A4/en not_active Withdrawn
- 2013-02-21 KR KR20147023932A patent/KR20140135955A/ko not_active Withdrawn
- 2013-02-21 US US14/380,084 patent/US20150016380A1/en not_active Abandoned
Non-Patent Citations (3)
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Also Published As
Publication number | Publication date |
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MX2014010145A (es) | 2015-02-17 |
KR20140135955A (ko) | 2014-11-27 |
EP2819469A1 (en) | 2014-12-31 |
JP2013175885A (ja) | 2013-09-05 |
JP5337889B2 (ja) | 2013-11-06 |
CN104145515A (zh) | 2014-11-12 |
EP2819469A4 (en) | 2016-01-27 |
US20150016380A1 (en) | 2015-01-15 |
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