WO2007138652A1 - 通信装置、通信システム及びハンドオーバ方法 - Google Patents
通信装置、通信システム及びハンドオーバ方法 Download PDFInfo
- Publication number
- WO2007138652A1 WO2007138652A1 PCT/JP2006/310489 JP2006310489W WO2007138652A1 WO 2007138652 A1 WO2007138652 A1 WO 2007138652A1 JP 2006310489 W JP2006310489 W JP 2006310489W WO 2007138652 A1 WO2007138652 A1 WO 2007138652A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- address
- handover
- layer
- message
- communication terminal
- Prior art date
Links
Classifications
-
- 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
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
-
- 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 communication device, a communication system, and a node over method using, for example, Gratuitous ARP (Gratuitous Address Resolution Protocol).
- Gratuitous ARP Gramuitous Address Resolution Protocol
- IP network layer protocol corresponding to the Internet
- IP Used to manage and control To ensure that IP data packets can be delivered reliably, each node is assigned one IP address, and the assigned IP address defines the location on the fixed network for that node.
- IP is designed to support routing of IP packets between fixed network nodes!
- a mobile terminal can move within an area corresponding to, for example, a subnetwork or a local network (LAN) segment.
- the mobile terminal can continuously change the point of connection to the subnetwork or LAN segment through different network hosts.
- the corresponding network host acts as a proxy for the mobile terminal.
- the mobile terminal registers itself with each network host through a subnetwork or LAN connection. This registration process creates and stores a registration record in the network host through the connected mobile terminal. At this time, the network host uses the information including these registered records, for example, receives an IP data packet representing the mobile terminal, performs processing, and then transmits the IP data packet to the mobile terminal. It can manage or support requests for movement of mobile terminals.
- the registration deletion process includes a process of deleting the above registration record from the old network host.
- the process of deleting and registering a mobile terminal is extremely important. For example, deleting registration eliminates the need to consume network resources and contributes to safety.
- two or more hosts will act as proxies for the mobile terminal, resulting in inappropriate route assignment of IP data packets, which may result in an unacceptable network malfunction.
- FIG. 1 is a schematic diagram of a communication system for explaining a handover method.
- a mobile terminal (MT) IO performs a handover from H 11 to H 12 to
- Network or LAN segment 13 connection point is changed from H 11 to H 12 H
- the broadcast gratuitous ARP message is received by many nodes and H 11 in the subnetwork or LAN segment 13. This
- the mobile terminal 10 is now connected to the mobile terminal 10 through the H 12 instead of the H 11
- the Gratuitous ARP message notifies other nodes in the same network of the change of the layer 3 IP address and the layer 2 Ethernet address.
- Patent Document 1 Special Table 2002-541686
- An object of the present invention is to hand over the packet data notifying the address of the handover destination to the host device, and the host device is connected to the communication terminal device to the handover source. It is an object to provide a communication device, a communication system, and a node over method capable of reducing the processing load of network resources and network hosts by notifying release.
- the communication device of the present invention when the local station is notified of the fact that the local station has been selected as the handover destination of the communication terminal device and the layer 3 address of the communication terminal device.
- a handover control means for determining whether or not handover to the network is possible, and a message for storing the layer 3 address of the communication terminal device and the layer 2 address of the local station when it is determined that the handover is possible
- a message creating means for creating the message, and a sending means for casting the created message to the host device.
- a communication system includes a communication terminal apparatus that reports a measurement result of reception quality, a determination of a handover destination based on the measurement result, and the determination and the communication terminal apparatus for a determined node over destination.
- Handover of the original network host for notifying the layer 3 address and whether or not the handover to the local station is possible when the notification is received, and when determining that the handover is possible,
- Layer 3 A network host to which a message storing the address and the layer 2 address of the local station is multicast, and the layer that receives the multicast message and stores it in the message.
- the packet data addressed to the layer 3 address is transmitted to the network host of the stored layer 2 address of the handover destination, and the layer 2 address deleted by the storage is stored.
- a host device that instructs the network host that is the handover source to release the connection with the communication terminal device.
- the handover method of the present invention includes a step in which a communication terminal apparatus reports a measurement result of reception quality, a step in which a handover source determines a handover destination based on the measurement result, and a selection as the handover destination.
- the handover source notifying the handover destination to the handover destination, and whether or not the handover destination that has received the notification is capable of handover to the local station.
- the handover destination sends a message storing the layer 3 address and the layer 2 address of the handover destination to the higher-level device when determining that the handover is possible.
- a step of casting, a step of receiving the message by a host device, and a step included in the received message A step in which the higher-level device newly stores the address of the handover destination layer 2; and the higher-level device communicates with the communication terminal device with respect to the handover source of the layer 2 address deleted by the storage.
- the handover destination multicasts packet data for notifying the handover destination address to the host device, and the host device is connected to the communication terminal device to the handover source.
- the processing load on the network resource and network host can be reduced.
- FIG. 1 is a diagram showing a conventional handover method.
- FIG. 2 is a block diagram showing a configuration of a communication apparatus according to the embodiment of the present invention.
- FIG. 3 is a diagram showing a network configuration according to the embodiment of the present invention.
- FIG. 4 is a sequence diagram showing a handover method according to the embodiment of the present invention.
- FIG. 5 is a diagram showing a format of Ethernet data and a gratuitous ARP message according to the embodiment of the present invention.
- FIG. 2 is a block diagram showing a configuration of network host 100 which is a communication apparatus according to the embodiment of the present invention.
- Receiving section 101 receives a signal transmitted using a radio channel as well as communication terminal apparatus power, down-converts the received signal to a radio frequency power baseband frequency, and outputs the received signal to received data processing section 102 To do.
- Received data processing section 102 demodulates the received signal input from receiving section 101 and decomposes it into a data portion and a control data portion. Received data processing section 102 then outputs the decomposed data portion to IP Access Gateway (hereinafter referred to as “IPAG”) interface section 106, and the disassembled control data section into scheduling section 103 and handover control section 104. Output to.
- IP Access Gateway hereinafter referred to as “IPAG”) interface section 106
- Scheduling section 103 receives reception quality information, which is information on reception quality at the communication terminal apparatus included in the control data portion input from reception data processing section 102, and packet buffer 107 input from packet buffer 107. Scheduling is performed based on queue information, which is information on the amount of data stored.
- the scheduling unit 103 holds a table storing scheduling information that associates reception quality such as CQI (Channel Quality Indicator) and the amount of transmission data. Then, scheduling section 103 selects the amount of transmission data by referring to the scheduling information and the queue information using the reception quality of the reception quality information such as CQI input from reception data processing section 102. In addition, the scheduling unit 103 controls the transmission unit 108 to transmit only the selected transmission data amount.
- the handover control unit 104 performs different processing depending on whether the network host 100 is a handover source or a handover destination.
- handover control unit 104 When network host 100 is a handover source, handover control unit 104 performs handover destination network based on reception quality information of a plurality of network hosts included in the control data part input from reception data processing unit 102 Select a host. Then, the handover control unit 104 notifies the other network host of the handover destination of the selection of the handover destination and the layer 3 address of the communication terminal device included in the control data part. In addition, the handover control unit 104 transmits or receives various information for performing handover with another network host as a handover destination.
- the handover control unit 104 receives the notification selected as the handover destination from another network host that is the handover source, so that the local station performs the handover. Recognize that it was selected as the destination. Then, based on the radio resource status of the local station, the handover control unit 104 determines whether or not the communication terminal device can be handed over to the local station, and if possible, another network that is the handover source.
- the layer 3 address information which is the layer 3 address information of the communication terminal device notified from the host, is output to the message creation unit 105.
- the handover control unit 104 transmits or receives various information for handover with another network host that is the handover source.
- the message creation unit 105 transmits the layer 2 address of the local station, the layer 3 address of the layer 3 address information input from the handover control unit 104, and the IPAG. Create a message that stores the cast address for the cast. Then, message creation unit 105 outputs the created message to IPAG interface unit 106.
- the message generated by the message creation unit 105 is, for example, a gratis ARP message. Details of the message to be created will be described later.
- the IPAG interface unit 106 is connected to the IPAG by wire, and transmits the data portion input from the received data processing unit 102 to the IPAG.
- the IPAG interface unit 106 communicates with the layer 3 address received from the IPAG, that is, the communication handed over to its own station.
- the packet data addressed to the terminal device is output to the packet buffer 107.
- the IPAG interface unit 106 transmits the message input from the message creation unit 105 to the IPAG.
- the packet buffer 107 outputs the queue information to the scheduling unit 103.
- the packet buffer 107 temporarily stores packet data input from the IPAG interface unit 106. Then, the packet buffer 107 outputs packet data of the data amount instructed from the transmission unit 108 to the transmission unit 108 at a predetermined timing.
- Transmitting section 108 instructs packet buffer 107 to output the amount of data instructed from scheduling section 103, and transmits the packet data of the instructed data amount input from packet buffer 107 as a radio signal. Send in.
- the transmission unit 108 transmits a message instructing that a handover is input from the handover control unit 104 as a radio signal.
- FIG. 3 is a diagram showing a configuration of network 300 according to the present embodiment.
- the network 300 includes an IP-based IP core network 301 and a radio access network (RAN) 302.
- the network hosts 303 and 304 are located in the RAN 302 and are connected to the IPAG 305 by wire.
- the IPAG 305 is located in the IP core network 301 and serves as a gateway to the external network.
- the communication terminal device 306 is connected to the network host 303 using a radio access technology, and communicates with an external network via the IPAG 305.
- FIG. 4 is a sequence diagram showing the handover method.
- the communication terminal device 306 is described as MT
- the handover source network host 303 is described as H
- the handover destination network host 304 is H.
- H 303 and H 304 have the same configuration as FIG.
- MT 306 communicates with an external network via H 303 and IPAG 305.
- H 303 and H 304 Monitor the communication status with the network host. Specifically, H 303 and H 304
- the MT306 that received the CPICH signal measures the received power of the CPICH, and the measurement result is Notify H 303 as Measurement Report, which is reception quality information
- the H 303 that has received the measurement report indicates that the MT 306
- H 304 selects H 304 as a handover destination for H 304.
- Context information is transmitted together with this notification, that is, MT306 handover request (context transfer request) (step ST404).
- MT306 releases the connection to H303 and initiates the connection to H304.
- MT 306 completes handover to H 304.
- H 304 Upon receiving the handover completion notification from MT 306, H 304 communicates with IPAG 305.
- a gratuitous ARP message is transmitted to IPAG 305 (Relocatio Request) (step ST409).
- ARP is a protocol generally used to know the physical address of a partner communication device whose IP address is known.
- the inquiring communication device sends a Gratuitas ARP message that specifies the IP address of the partner communication device to all communication devices on the network simultaneously.
- the communication device corresponding to the specified IP address knows its physical address and ip address, and sends back a response message with its physical address and ip address set to a.
- the inquiring communication device is You can create and update entries for physical address and IP address pairs.
- the IPAG 305 instead of setting the address (broadcast address) of all communication devices in the broadcast field of the gratis ARP message, the IPAG 305 only receives the gratis ARP message by setting the IPAG305 address (mucast address). You can receive the first.
- the gratuitous ARP is used to notify other stations of a change in the layer 2 address of the local station.
- the gratuitous ARP is used for the purpose of updating its own ARP entry in other network hosts belonging to the same broadcast domain. For example, when a layer 2 interface card is replaced, Used to prompt the host to update the layer 2 address corresponding to its own IP address.
- the IPAG 305 that has received the Gratuitous ARP message sends the Ethernet address and IP address stored in the Sender Ether addr and Sender IP addr of the Gratuitous ARP message ⁇ Ether (H), IP (MT) ⁇ Is stored in the ARP cache and previously stored
- Packets received from the workpiece and destined for MT306 are forwarded to H304 by IPAG305.
- IPAG 305 uses Ethernet address Ether (H
- H 303 follows the instructions from IPAG 305, and the radio resources for MT 306
- Fig. 5 (A) and Fig. 5 (B) show the format of the Gratuitus ARP message.
- Fig. 5 (A) shows the format of Ethernet data
- Fig. 5 (B) shows the format of the gratuitous ARP message included in the Ethernet data.
- the Ethernet data includes the destination address (Dest Address) field # 501 for setting the data transmission destination and the source address for setting the source address.
- FCS Consists of Check Sequence
- the Gratuitus ARP field # 504 includes a HARD TYPE field # 510, a PROT TYPE field # 511, a HARD SIZE field # 51 2, and a PROT SIZE field # 513, as shown in FIG. , OP field # 514, source layer 2 address (Sender Ether addr) field # 515, source layer 3 address (Sender IP addr) field # 516, and destination layer 2 address (Target Ether addr) addr) field # 517 and destination layer 3 address (Target IP addr) field # 51 8 force.
- OP field # 514 is used when making an inquiry when the communication partner to which an IP address is assigned is unknown. When OP field # 514 is set to "1"! Indicates that the sender is requesting a response to the communication partner device to which an IP address has been assigned / received. If OP field # 514 is set to “2”, it will be received. Indicates that there was a response from the side.
- IPAG 305 layer 2 address is added to destination address field # 501.
- IPAG 305 that is the IP address of the IP address of H 304 and set the Ethernet address of H 304 that is the layer 2 address of H 304 in source address field # 502.
- the broadcast address is set in the destination address field # 50 1.
- the destination address In field # 501 the Ethernet address (cast address) of IPAG305 is set.
- the IPAG 305 that has received the above gratuitous ARP message stores the Ethernet address of the H 303 and the IP address of the MT 306 stored in the A RP table of the ARP cache.
- the combination with the MT306's IP address set to is stored in the ARP cache's ARP table. This prevents unnecessary traffic from being broadcast to the entire network in cellular systems, etc., where the network is configured in a tree.
- the handover destination sends a message notifying the handover destination address to the higher-level device, and the higher-level device notifies the handover source.
- the processing load on the network resource and the network host can be reduced.
- the communication apparatus, communication system, and handover method according to the present invention are suitable for performing packet-by-packet communication using, for example, mobile ARP in the mobile IP technology.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/310489 WO2007138652A1 (ja) | 2006-05-25 | 2006-05-25 | 通信装置、通信システム及びハンドオーバ方法 |
US12/302,264 US20090116454A1 (en) | 2006-05-25 | 2006-05-25 | Communication device, communication system, and handover method |
JP2008517717A JPWO2007138652A1 (ja) | 2006-05-25 | 2006-05-25 | 通信装置、通信システム及びハンドオーバ方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/310489 WO2007138652A1 (ja) | 2006-05-25 | 2006-05-25 | 通信装置、通信システム及びハンドオーバ方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007138652A1 true WO2007138652A1 (ja) | 2007-12-06 |
Family
ID=38778181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/310489 WO2007138652A1 (ja) | 2006-05-25 | 2006-05-25 | 通信装置、通信システム及びハンドオーバ方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20090116454A1 (ja) |
JP (1) | JPWO2007138652A1 (ja) |
WO (1) | WO2007138652A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007125592A1 (ja) * | 2006-04-28 | 2007-11-08 | Panasonic Corporation | 通信装置及びハンドオーバ方法 |
WO2012137044A1 (en) * | 2011-04-07 | 2012-10-11 | Telefonaktiebolaget L M Ericsson (Publ) | Ethernet based local ip access |
FR3025393B1 (fr) * | 2014-09-03 | 2018-04-13 | Thales | Procede pour ameliorer la procedure de transfert d'un utilisateur mobile dans un reseau de communications |
EP3541116B1 (en) * | 2016-11-16 | 2021-04-28 | Huawei Technologies Co., Ltd. | Data migration method and device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000341339A (ja) * | 1999-05-25 | 2000-12-08 | Nec Corp | アドレス解決方法とアドレス解決通信システム |
JP2002541686A (ja) * | 1999-02-10 | 2002-12-03 | テレフォンアクチーボラゲット エル エム エリクソン(パブル) | 移動支援のための強制アドレス分解プロトコルの利用 |
JP2004007072A (ja) * | 2002-05-30 | 2004-01-08 | Toshiba Corp | ネットワークアドレス管理装置、ネットワークアドレス管理プログラム、および無線通信におけるハンドオーバ方法 |
JP2004140545A (ja) * | 2002-10-17 | 2004-05-13 | Sony Corp | 通信端末装置、通信基地局装置、通信中継装置、および方法、並びにコンピュータ・プログラム |
JP2004297205A (ja) * | 2003-03-25 | 2004-10-21 | Sanyo Electric Co Ltd | 品質情報転送方法およびその方法を利用可能なパケット転送装置 |
-
2006
- 2006-05-25 JP JP2008517717A patent/JPWO2007138652A1/ja active Pending
- 2006-05-25 US US12/302,264 patent/US20090116454A1/en not_active Abandoned
- 2006-05-25 WO PCT/JP2006/310489 patent/WO2007138652A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002541686A (ja) * | 1999-02-10 | 2002-12-03 | テレフォンアクチーボラゲット エル エム エリクソン(パブル) | 移動支援のための強制アドレス分解プロトコルの利用 |
JP2000341339A (ja) * | 1999-05-25 | 2000-12-08 | Nec Corp | アドレス解決方法とアドレス解決通信システム |
JP2004007072A (ja) * | 2002-05-30 | 2004-01-08 | Toshiba Corp | ネットワークアドレス管理装置、ネットワークアドレス管理プログラム、および無線通信におけるハンドオーバ方法 |
JP2004140545A (ja) * | 2002-10-17 | 2004-05-13 | Sony Corp | 通信端末装置、通信基地局装置、通信中継装置、および方法、並びにコンピュータ・プログラム |
JP2004297205A (ja) * | 2003-03-25 | 2004-10-21 | Sanyo Electric Co Ltd | 品質情報転送方法およびその方法を利用可能なパケット転送装置 |
Also Published As
Publication number | Publication date |
---|---|
US20090116454A1 (en) | 2009-05-07 |
JPWO2007138652A1 (ja) | 2009-10-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4796135B2 (ja) | パケット・データ通信環境におけるハンドオーバを管理するための方法およびネットワーク・ノード | |
KR101111519B1 (ko) | 이동 통신 시스템에서 ip 주소 선 설정 방법 | |
US7864755B2 (en) | Mobile node, base station, router and packet communication system that complies with an edge mobility scheme | |
KR20100029833A (ko) | 인터-액세스-게이트웨이 인터페이스를 위한 핸드오버 트리거 | |
US20110044290A1 (en) | Communication terminal apparatus and handover method | |
RU2530694C2 (ru) | Способ (варианты) и система обеспечения обмена информацией с мобильным узлом | |
JP2005500763A (ja) | 無線データ・ネットワーク内でソフト・ハンドオフを実行するためのシステム並びに方法 | |
KR100862722B1 (ko) | 네트워크기반의 지역 이동성 관리기법에 의한 빠른핸드오버 방법 및 시스템 | |
US20180041986A1 (en) | Communication system, mobile communication terminal and position managing apparatus | |
US20040100922A1 (en) | Method of associating an IP address with a plurality of link layer addresses in a wireless communication network | |
KR100663451B1 (ko) | 이동 인터넷 프로토콜 통신 시스템에서 소스 노드의핸드오프에 따른 멀티캐스트 서비스 제공 방법 | |
JP4875630B2 (ja) | マルチモード移動端末のハンドオーバー遂行後におけるリンク解除方法及び移動端末 | |
US20110219126A1 (en) | Mobile terminal, forwarding intermediate node and mobile communications system | |
EP1489790B1 (en) | Paging control in an IP network | |
US9344934B2 (en) | Method and apparatus for reducing latency during wireless connectivity changes | |
JP4523439B2 (ja) | モバイルルータ、無線基地局および位置管理装置並びにモバイルルータのハンドオーバ方法 | |
WO2007123227A1 (ja) | マルチキャストパケット転送装置及びマルチキャストパケット管理装置並びにマルチキャストパケット受信装置 | |
CN101112058A (zh) | 组播数据的隧道 | |
JP4057715B2 (ja) | ルータ装置、無線端末装置、無線基地局及びメッセージ送信制御方法 | |
WO2007125592A1 (ja) | 通信装置及びハンドオーバ方法 | |
WO2007138652A1 (ja) | 通信装置、通信システム及びハンドオーバ方法 | |
US7830839B2 (en) | Method for data message transmission | |
US20070086385A1 (en) | Method and apparatus for supporting handover in transport layer | |
JP2005244590A (ja) | マルチサービス端末、ハンドオフ方法、ハンドオフプログラム | |
KR100747913B1 (ko) | 셀룰러 인터넷 프로토콜에서의 세미소프트 핸드오프 방법및 시스템 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 06746868 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008517717 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12302264 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06746868 Country of ref document: EP Kind code of ref document: A1 |