WO2010125954A1 - 移動通信システム - Google Patents

移動通信システム Download PDF

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Publication number
WO2010125954A1
WO2010125954A1 PCT/JP2010/057082 JP2010057082W WO2010125954A1 WO 2010125954 A1 WO2010125954 A1 WO 2010125954A1 JP 2010057082 W JP2010057082 W JP 2010057082W WO 2010125954 A1 WO2010125954 A1 WO 2010125954A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
radio base
relay node
layer function
radio
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2010/057082
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
ウリ アンダルマワンティ ハプサリ
アニール ウメシュ
高橋　秀明
幹生 岩村
石井　美波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
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 NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to US13/266,299 priority Critical patent/US8830901B2/en
Priority to RU2011144424/07A priority patent/RU2498532C2/ru
Priority to MX2011011308A priority patent/MX2011011308A/es
Priority to KR1020117026173A priority patent/KR101324298B1/ko
Priority to EP10769653.6A priority patent/EP2426990B1/en
Priority to CN201080018580.7A priority patent/CN102415141B/zh
Priority to CA2759905A priority patent/CA2759905C/en
Publication of WO2010125954A1 publication Critical patent/WO2010125954A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to a mobile communication system.
  • a handover process of the mobile station UE from the radio base station eNB # 1 to the radio base station eNB # 2 is performed.
  • handover processing is performed between the radio base station eNB # 1 and the radio base station eNB # 2 via the X2 bearer set between the radio base station eNB # 1 and the radio base station eNB # 2. It is comprised so that the control signal which concerns on may be transmitted / received.
  • the radio base station eNB # 1 and the radio base station # 2 have a network layer 1 (NW L1) function and a network layer 2 (NW L2) as an X2 bearer function for setting up an X2 bearer. It has a function, an IP (Internet Protocol) layer function, and an SCTP (Stream Control Transmission Protocol) layer function.
  • NW L1 network layer 1
  • NW L2 network layer 2
  • IP Internet Protocol
  • SCTP Stream Control Transmission Protocol
  • a “relay node” having a function similar to that of the radio base station eNB is provided between the mobile station UE and the radio base station eNB.
  • RN can be connected.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a mobile communication system that can realize a handover process of a mobile station even when a relay node is connected.
  • a first feature of the present invention is a mobile communication system, in which a relay node and a radio base station are connected via a radio bearer, and the mobile station sets a radio bearer with the relay node.
  • a state in which communication is performed via the relay node and the radio base station and a state in which a radio bearer is set with the radio base station and communication is performed via the radio base station, It is configured to perform a handover process, and is configured to transmit and receive a control signal related to the handover process via a radio bearer between the relay node and the radio base station in the handover process. This is the gist.
  • the relay node and the radio base station are configured to perform a keep alive process for the radio bearer as an upper layer function of the function for setting the radio bearer.
  • a function may be provided.
  • the relay node and the radio base station perform security processing between the relay node and the radio base station as an upper layer function of the function for setting the radio bearer.
  • the first layer function configured as described above and the second layer function configured to perform keep alive processing on the radio bearer may be provided as an upper layer function of the first layer function.
  • FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • FIG. 2 is a protocol stack diagram in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 3 is a protocol stack diagram in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 4 is a protocol stack diagram in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 5 is a sequence diagram showing operations of the mobile communication system according to the first embodiment of the present invention.
  • FIG. 6 is a protocol stack diagram in the current mobile communication system.
  • Mobile communication system according to the first embodiment of the present invention A mobile communication system according to a first embodiment of the present invention will be described with reference to FIG. 1 to FIG.
  • the mobile communication system according to the present invention is an LTE-Advanced mobile communication system, for example, as shown in FIG. 1, to which an exchange MME, relay nodes RN1 to RN4, and a relay node RN1 are connected.
  • a radio base station DeNB (Donor eNB) 1 a radio base station DeNB2 to which relay nodes RN2 and RN3 are connected, and a radio base station eNB1 are provided.
  • the radio base station DeNB1 and the radio base station DeNB2 are connected via the X2-C interface
  • the radio base station DeNB2 and the radio base station eNB1 are connected via the X2-C interface.
  • each of the radio base station DeNB1, the radio base station DeNB2, and the radio base station eNB1 is connected to the switching center MME via the S1-MME interface.
  • the mobile station UE is configured to perform radio communication by setting a radio bearer between the radio base station eNB (DeNB) and the relay node RN.
  • DeNB radio base station eNB
  • the mobile station UE sets up a radio bearer with the relay node RN2, and performs communication via the relay node RN2 and the radio base station DeNB2. And a state in which a radio bearer is set up with the radio base station DeNB2 and a communication is performed via the radio base station DeNB2.
  • the control signal (X2AP signal) related to the handover process is transmitted and received via the X2-C radio bearer (radio bearer) between the relay node RN2 and the radio base station DeNB2. Yes.
  • the relay node RN2 and the radio base station DeNB2 have a physical (PHY) layer function and a physical (PHY) function as an X2-C radio bearer function for setting an X2-C radio bearer.
  • PHY The MAC (Media Access Control) layer function provided as the upper layer function of the layer function, the RLC (Radio Link Control) layer function provided as the upper layer function of the MAC layer function, and the upper layer of the RLC layer function PDCP (Packet Data Convergence Protocol) layer function provided as a layer function.
  • MAC Media Access Control
  • RLC Radio Link Control
  • PDCP Packet Data Convergence Protocol
  • relay node RN2 and the radio base station DeNB2 may have an RRC (Radio Resource Control) layer function provided as an upper layer function of the PDCP layer function.
  • RRC Radio Resource Control
  • the relay node RN2 and the radio base station DeNB2 are configured to perform security processing between the relay node RN2 and the radio base station DeNB2 as an upper layer function of the X2-C radio bearer function.
  • SCTP layer function (second layer function) configured to perform keep-alive processing for the X2-C radio bearer as an upper layer function of the IP layer function. ).
  • the relay node RN2 and the radio base station DeNB2 are configured to perform a keep-alive process for the X2-C radio bearer as an upper layer function of the X2-C radio bearer function.
  • a function may be provided.
  • the relay node RN2 and the radio base station DeNB2 do not have an IP layer function configured to perform security processing between the relay node RN2 and the radio base station DeNB2.
  • the relay node RN2 and the radio base station DeNB2 are configured to perform a keep-alive process for the X2-C radio bearer as an upper layer function of the X2-C radio bearer function.
  • the function and the IP layer function configured to perform the security process between the relay node RN2 and the radio base station DeNB2 may not be provided.
  • the mobile station UE sets up a radio bearer with the relay node RN2, and performs communication via the relay node RN2 and the radio base station DeNB2.
  • a description will be given of an operation for performing a handover from a state in which communication is performed to a state in which a radio bearer is set with the radio base station DeNB2 and communication is performed via the radio base station DeNB2.
  • the relay node RN2 manages the “UE Context” of the mobile station UE in step S1000, and in step S1001, the radio base station DeNB2 via the X2-C radio bearer. Then, the mobile station UE transmits a “HO Request (handover request signal)” requesting handover from the relay node RN2 of the mobile station UE to the radio base station DeNB2.
  • HO Request handover request signal
  • the radio base station DeNB2 When receiving the “HO Request”, the radio base station DeNB2 stores “UE Context” of the mobile station UE in step S1002, and in step S1003, the relay node RN2 is connected to the relay node RN2 via the X2-C radio bearer. “HO Request Ack (handover request confirmation signal)” is transmitted.
  • step S1004 the relay node RN2 transmits “HO Command (handover instruction signal)” instructing the mobile station UE to perform handover to the radio base station DeNB2 by the RRC layer function.
  • HO Command handover instruction signal
  • step S1005 the mobile station UE transmits “HO Complete (handover completion signal)” to the radio base station DeNB2 by the RRC layer function.
  • step S1006 the radio base station DeNB2 transmits a “Path Switch Request (path switching request signal)” to the switching center MME via the S1-MME interface.
  • step S1007 the mobile switching center MME transmits a “Path Switch Request Ack (path switching request confirmation signal)” to the radio base station DeNB2 via the S1-MME interface, and also transmits a signal addressed to the mobile station UE.
  • the transfer destination is switched from the relay node RN2 to the radio base station DeNB2.
  • step S1008 the radio base station DeNB2 transmits “UE Context Release” to the relay node RN2 via the X2-C radio bearer, and the relay node RN2 moves according to the “UE Context Release”. The management of the “UE Context” of the station UE is terminated.
  • the relay node RN2 and the radio base station DeNB2 may be interchanged.
  • the handover process related to the relay node RN is realized without significantly modifying the protocol stack of each device used in the LTE mobile communication system. be able to.
  • the mobile communication system it is not necessary to set up an X2-C radio bearer between the radio base station DeNB2 and the relay node RN2 during the handover process of the mobile station UE.
  • the handover process can be performed quickly.
  • the operations of the mobile station UE, the relay node RN, the radio base station eNB, and the switching center MME described above may be performed by hardware, may be performed by a software module executed by a processor, or both. It may be implemented by a combination of
  • Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in an arbitrary format storage medium such as a CD-ROM.
  • the storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Further, such a storage medium and a processor may be provided in the ASIC. Such an ASIC may be provided in the mobile station UE, the relay node RN, the radio base station eNB, or the exchange MME. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE, the relay node RN, the radio base station eNB, or the exchange MME.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
PCT/JP2010/057082 2009-04-27 2010-04-21 移動通信システム Ceased WO2010125954A1 (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US13/266,299 US8830901B2 (en) 2009-04-27 2010-04-21 Mobile communication system
RU2011144424/07A RU2498532C2 (ru) 2009-04-27 2010-04-21 Система мобильной связи
MX2011011308A MX2011011308A (es) 2009-04-27 2010-04-21 Sistema de comunicacion movil.
KR1020117026173A KR101324298B1 (ko) 2009-04-27 2010-04-21 이동통신시스템
EP10769653.6A EP2426990B1 (en) 2009-04-27 2010-04-21 Mobile communication system
CN201080018580.7A CN102415141B (zh) 2009-04-27 2010-04-21 移动通信系统
CA2759905A CA2759905C (en) 2009-04-27 2010-04-21 Mobile communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-108558 2009-04-27
JP2009108558A JP5072900B2 (ja) 2009-04-27 2009-04-27 ハンドオーバ方法

Publications (1)

Publication Number Publication Date
WO2010125954A1 true WO2010125954A1 (ja) 2010-11-04

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PCT/JP2010/057082 Ceased WO2010125954A1 (ja) 2009-04-27 2010-04-21 移動通信システム

Country Status (9)

Country Link
US (1) US8830901B2 (enExample)
EP (2) EP2426990B1 (enExample)
JP (1) JP5072900B2 (enExample)
KR (1) KR101324298B1 (enExample)
CN (1) CN102415141B (enExample)
HU (1) HUE032067T2 (enExample)
MX (1) MX2011011308A (enExample)
RU (1) RU2498532C2 (enExample)
WO (1) WO2010125954A1 (enExample)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
CN102415208A (zh) * 2009-04-27 2012-04-11 株式会社Ntt都科摩 移动通信系统
WO2013070247A1 (en) * 2011-11-11 2013-05-16 Research In Motion Limited Method and apparatus for managing mobility of a plurality of relay nodes
WO2013070246A1 (en) 2011-11-11 2013-05-16 Research In Motion Limited Method an relay node for initiating a direct attachment to a target network node
KR102265454B1 (ko) * 2014-04-11 2021-06-15 삼성전자 주식회사 이동 통신 네트워크에서 통신 품질 개선 방법 및 장치
US10028186B1 (en) * 2017-03-24 2018-07-17 Sprint Communications Company L.P. Wireless communication system to redirect use equipment (UE) from a wireless relay to a donor base station

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US20080090575A1 (en) * 2006-07-13 2008-04-17 Oz Barak WiMAX ACCESS POINT NETWORK WITH BACKHAUL TECHNOLOGY
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WO2009022610A1 (ja) * 2007-08-10 2009-02-19 Mitsubishi Electric Corporation 無線通信システムおよび基地局

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JP2007116696A (ja) * 2005-10-17 2007-05-10 Samsung Electronics Co Ltd 無線接続通信システムにおける端末の要求による端末ハンドオーバー支援装置及び方法
US20080285501A1 (en) * 2005-11-12 2008-11-20 Nortel Networks Limited Media Access Control Data Plane System and Method for Wireless Communication Networks
US20080090575A1 (en) * 2006-07-13 2008-04-17 Oz Barak WiMAX ACCESS POINT NETWORK WITH BACKHAUL TECHNOLOGY
WO2009022610A1 (ja) * 2007-08-10 2009-02-19 Mitsubishi Electric Corporation 無線通信システムおよび基地局

Also Published As

Publication number Publication date
RU2011144424A (ru) 2013-06-10
KR20120016226A (ko) 2012-02-23
EP2699038A1 (en) 2014-02-19
JP2010258919A (ja) 2010-11-11
HUE032067T2 (en) 2017-08-28
EP2426990A4 (en) 2013-05-29
JP5072900B2 (ja) 2012-11-14
KR101324298B1 (ko) 2013-10-30
MX2011011308A (es) 2011-12-06
EP2699038B1 (en) 2016-10-12
CN102415141A (zh) 2012-04-11
RU2498532C2 (ru) 2013-11-10
US8830901B2 (en) 2014-09-09
EP2426990A1 (en) 2012-03-07
US20120044859A1 (en) 2012-02-23
EP2426990B1 (en) 2015-01-21
CN102415141B (zh) 2014-06-25

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