CN1809071A - Method of implementing transmission of wireless PHS packet data - Google Patents

Method of implementing transmission of wireless PHS packet data Download PDF

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CN1809071A
CN1809071A CN 200610038370 CN200610038370A CN1809071A CN 1809071 A CN1809071 A CN 1809071A CN 200610038370 CN200610038370 CN 200610038370 CN 200610038370 A CN200610038370 A CN 200610038370A CN 1809071 A CN1809071 A CN 1809071A
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svc
cs
ppp
ps
packet
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CN100486253C (en
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顾恺
顾杰
智勇
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南京联创通信科技有限公司
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Abstract

This invention realizes the PHS wireless dividing data transmission method, which uses X.25 agreement to realize dividing by use of multiple channels to point PPP to adapt PHS wireless dividing data; mobile adapting module is located between the PPP and X.25 SVC virtual circuit by isolation; in the terminal mobile process, switching from A to B with MAL layer released by the virtual circuit; in the process, the MAL layer using new SVC to take place of old SVC to ensure upper layer connection of PPP.

Description

实现PHS无线分组数据传输的方法 PHS-implemented method of wireless packet data transmission

技术领域 FIELD

本发明涉及PHS无线分组数据传输的方法。 The present invention relates to a method of wireless packet data transmission PHS.

背景技术 Background technique

PHS数据通信技术最早商用于1997年,支持单信道32Kb/s非限制数据通信,属于电路型数据业务。 PHS data communication technology was first used commercially in 1997, single-channel support 32Kb / s unrestricted communication data belonging IWF service. 1999年PHS空中接口标准RCR STD-28 Ver3.0通过,使得PHS通过捆绑两个空中业务信道,实现了64Kb/s的非限制数据业务。 In 1999 PHS air interface standard RCR STD-28 Ver3.0 by such binding by PHS-air two traffic channels, to achieve a 64Kb / s unrestricted data traffic.

由于无线传输空间干扰大、时延长、基站覆盖范围小(PHS采用微蜂窝技术,一般在200-500m之间),导致数据传输误码率高,切换频繁,传输质量差。 Because the wireless transmission interference large space, when extending, the coverage of a small base station (PHS uses micro-cell technology, generally between 200-500m), resulting in data transmission error rate, frequent switching, poor transmission quality. 为了提高数据吞吐量,1995年10月成立了PHS互联网接入论坛,并于1996年4月制订了统一的PHS数据传输控制协议——PIAFS PHS互联网接入协议(PIAFS)。 In order to improve data throughput, set up in October 1995 PHS Internet Access Forum, and in April 1996 to develop a unified PHS data transmission control protocol --PIAFS PHS Internet Access Protocol (PIAFS).

PHS互联网接入协议(PIAFS)是定位于数据链路层的端到端协议,采用高效的差错控制规程和带内协商规程,具有完备的控制功能和扩展功能,可与点到点协议(PPP)配合形成高质量的可靠的数据通道;PHS利用32Kb/s或64Kb/s非限制数据承载能力,可以支持32Kb/s、64Kb/s的PIAFS数据传输,可方便地接入Internet或者企业内部网络。 PHS Internet Access Protocol (the PIAFS) is positioned in end to end data link layer protocol, using an efficient error control protocol negotiation procedure and in-band, with complete control and extension, with Point to Point Protocol (PPP ) cooperate to form a high-quality and reliable data channel; using the PHS 32Kb / s or 64Kb / s unrestricted data carrying capacity, can support 32Kb / s, PIAFS data transmission 64Kb / s can easily access the Internet or intranet .

但是,PHS电路型数据业务存在以下一些不足之处:1.最高只能达到64Kb/s的传输速率,不能满足用户上网的需求,以及PHS增值业务的开展;2.电路交换不太适合以IP为基础的互联网业务;3.无法实现永远在线的功能;4.无法按流量计费。 However, PHS IWF service some of the following shortcomings: 1 can only achieve the highest transfer rate of 64Kb / s, and can not meet the needs of Internet users, as well as conduct PHS value-added services; 2 is not suitable for circuit-switched to IP.. based internet business; 3 can not achieve always-on function; 4 can not be metered.

发明内容 SUMMARY

1.发明目的由于电路交换不太适合以IP为基础的互联网服务,而分组交换在先天上就有与IP技术融合的优势。 1. Since the object of the invention is not suitable for circuit-switched IP-based Internet service, and the advantages of packet-switched IP technology have fused in the innate. 本发明目的是利用分组交换的技术实现PHS的无线数据传输,解决了以下问题:如提高带宽:可以为用户提供128Kb/s以上的带宽;通过信道资源共享:多个用户可以共享无线信道进行数据传输;消除移动过程中切换对无线数据传输的影响;用户在移动过程中发生基站的切换将对数据的传输不产生任何影响;永远在线:可以实现在用户没有数据传输时,自动释放信道资源;在有数据传输时,自动申请信道资源,实现永远在线功能。 Object of the present invention is to use packet switching technology of the PHS wireless data transmission, to solve the following problems: The increase bandwidth: can provide more than 128Kb / s bandwidth users; via shared channel resource: a plurality of users can share a wireless channel for data transmission; eliminate the effects of wireless data transmission during movement switch; transmission switch will be data base of the user occurs during the movement no effect; always-: may be implemented when the user no data is transmitted, automatically release the channel resources; when there is data transmission, automatic application channel resources to achieve always-on function.

2.技术方案本发明的技术解决方案是:实现PHS无线分组数据传输的方法,利用X.25技术实现数据分组,用多链接点到点协议Multilink PPP实现多信道捆绑,以此构成并添加移动适应层(Mobile Adapter Layer层)提供对移动性的支持。 2. The technical solution of the present invention is a technical solution: a method to achieve PHS radio packet data transmission, data packets using the X.25 technology, to achieve multi-channel multi link point protocol tied Multilink PPP, and thus constitutes Add Mobile adaptation layer (mobile Adapter layer layer) provides support for mobility.

系统主要分成4个部分:终端(PS)、基站(CS)、交换机(PSC)、分组服务器(Packet Server)。 The system is divided into four parts: the terminal (PS), the base station (CS), the switch (PSC), the server packet (Packet Server). 各个部分的关系和协议栈如图1所示。 And the relationship between each part of the protocol stack shown in Figure 1. 其中分组服务器提供对Internet的访问界面。 Wherein the packet interface server provides access to the Internet.

在PPP和X.25的SVC之间,增加了Mobility Adapter Layer(MAL)层。 Between the SVC PPP and X.25, increasing the Mobility Adapter Layer (MAL) layer. PPP和X.25的SVC隔离,使PPP不依赖于具体的某条X.25的SVC(交换虚电路)。 PPP and X.25 SVC isolation of the PPP does not depend on a specific article for X.25 SVC (switched virtual circuits).

在终端移动过程中,当从基站A切换到基站B的时候,MAL层将由基站A建立的SVC(交换虚电路)需要释放,并由基站B重新建立SVC。 In the terminal during movement, when switching from the base station A to base station B, MAL layer of the SVC established by the base station A (SVC) to be released, the base station B by re-established SVC. 在这个过程中,MAL层会负责用新的SVC(交换虚电路)替换旧的SVC,并保证上层PPP不会断开。 In this process, MAL with a new layer will be responsible for the SVC (Switched Virtual Circuit) replace the old SVC, with PPP to ensure that the upper layer is not disconnected. 过程如图2所示,说明如下:1)终端PS通过CS A基站A和分组服务器(Packet Server)通信;2)PS在移动到CS B的覆盖范围中,并要切换到CS B上。 2 process, as follows: 1) A terminal PS through the CS and the base station A packet server (Packet Server) communication; 2) PS moves to the coverage area of ​​CS B, and to switch to the CS B. PS向CS B请求信道,建立无线连接;3)PS的MAL层向CS B发送handover connect请求,要求建立数据连接。 PS to CS B channel request, wireless connection is established;. 3) PS handover connect the MAL layer transmission request to establish a data connection to the CS B.

4)CS B首先和Packet Server建立SVC,并发送handover connect给Packet Server。 4) CS B first and Packet Server established SVC, and sends the handover connect to Packet Server.

5)Packet Server发送确认应答Confirm给CS B,并将响应的PPP切换到新的SVC上。 5) Packet Server sends an acknowledgment reply to Confirm CS B, and switch on the PPP in response to the new SVC.

6)CS B发送确认应答confirm给PS,PS将PPP切换到新的信道上。 6) CS B transmits acknowledgment to confirm PS, PS handover to a new PPP channel.

7)Packet Server发送handover connect给CS A,要求断开SVC(交换虚电路)。 7) Packet Server transmits handover connect to the CS A, disconnection requires the SVC (Switched Virtual Circuit).

8)CS A发送确认应答Confirm给Packet Server,双方断开SVC。 8) CS A Confirm to send a confirmation reply Packet Server, both sides disconnect SVC.

在没有流量的时候,PS释放无线信道,但是保持PPP连接不断开,这个过程仍然是通过MAL层完成。 In the absence of traffic, PS radio channel release, but keep the PPP connection is not, this process is still done by MAL layer. 过程如图3所示,说明如下:1)PS通过CS和Packet Server通信;2)当没有流量时,PS的MAL层发送dormant disconnect给CS;3)CS将dormant disconnect发送给Packet Server,Packet Server将PPP和SVC断开,但是保持PPP连接不断开。 Process shown in Figure 3, as follows: 1) PS through the CS and Packet Server communication; 2) when there is no traffic, PS of dormant disconnect MAL sent to CS layer; 3) to a CS dormant disconnect the Packet Server, Packet Server the PPP and SVC off, but keep the PPP connection is not.

4)Packet Server发送确认应答Confirm给CS;5)CS发送Confirm给PS,PS将PPP和SVC断开,保持PPP连接不断开。 4) Packet Server Confirm acknowledgment sent to CS; 5) CS sends a Confirm to PS, PS and SVC disconnect the PPP, PPP connection is not maintained.

6)Packet Server将SVC释放;7)CS将无线信道释放;8)进入到休眠状态,PPP连接保持,但是信道和SVC都完全释放;9)当PS有数据需要发送时,MA层首先向CS请求信道,并发送Dormant Connect请求;10)CS收到Dormant Connect请求后,首先建立SVC,并发送Dormant Connect给Packet Server;11)Packet Server收到Dormant Connect消息后,将PPP和SVC连接起来,并返回确认消息Confirm;12)CS将Confirm消息发送给PS,PS将PPP和SVC连接起来;13)进入到正常的数据通信过程。 6) Packet Server The SVC release;. 7) CS radio channel is released; 8) into a sleep state, PPP connections remain, but the channels and SVC are fully released; 9) When the PS needs to send data, MA layer is first to the CS request channel, and transmits Dormant connect request; 10) Dormant connect request is received after the CS, first established SVC, with transmission to a Dormant connect Packet Server; 11) receives the Packet Server Dormant connect message to connect PPP and SVC, with returns an acknowledgment message confirm; 12) CS sends a confirm message to the PS, PS and connecting PPP SVC; 13) into the normal data communications.

MAL层分成控制面和数据面:1)控制面控制面主要完成连接、切换、休眠等过程的控制,消息类型有:Connect、Disconnect、DormantConnect、DormantDisconnect、DormantHello、HandoverConnect、HandoverDisconnect、Confirm。 MAL layer is divided into a control plane and data plane: 1) the main control plane a control plane connection is completed, switching, control and other sleep message types are: Connect, Disconnect, DormantConnect, DormantDisconnect, DormantHello, HandoverConnect, HandoverDisconnect, Confirm.

2)数据面数据面用来发送和接受数据,承载PPP报文。 2) Surface data Surface data used to send and receive data, carry PPP packets. 消息类型有DATA。 Message types DATA. MAL层中的每一个实体对应着一个PPP连接。 MAL layer entity corresponding to each of a PPP connection. 在完成单个PPP连接的基础上,可以利用PPP的Multilink功能,将多个PPP连接捆绑,从而达到增加带宽的目的。 Upon completion of the single PPP connection, the PPP Multilink function may be utilized to connect a plurality of PPP bundle, so as to achieve increased bandwidth. 负载均衡和报文重组均能通过Multilink PPP协议完成。 Load balancing and reassembly can be completed by Multilink PPP protocol.

3.本发明效果从传输速率上看,在使用4个信道的情况下,可以使传输速率达到128Kb/s。 3. Effects of the present invention viewed from the transmission rate, in the case of four channels, the transfer rate may reach 128Kb / s. 如果使用8个信道,可以达到256Kb/s,能够满足大部分的需要。 If 8 channels, can reach 256Kb / s, it can satisfy most needs. 在没有数据传输的时候,可以自动休眠,释放信道资源,实现永远在线和按流量计费。 In the absence of data transmission, automatic sleep, the release channel resources, always-on and traffic accounting.

本发明的关键是就是MAL(Mobility Adapter Layer);而X.25与MLPPP都是成熟技术。 The key is that the present invention MAL (Mobility Adapter Layer); MLPPP and the X.25 are mature technologies. 在PHS分组上网模式中,X.25解决的是基站与分组服务器之间的传输模式问题,因为PHS基站采用DSL技术与交换机互通,物理层传输质量一般,X.25的纠错能力较强。 In the PHS mode packet Internet, X.25 problem solved is the transmission mode and the packet between the base station server, because the PHS base stations communicate with the switch using DSL technology, general physical layer transmission quality, strong error correction capability of X.25.

但是仅仅简单地将X.25与MLPPP捆绑,无法实现对移动性的支持。 But just simply X.25 and MLPPP bundles, can not implement support for mobility. 而PHS仅仅具备有限的移动性,它并不象GPRS那样有完整意义上的移动性管理要求,所以没有必要定义象GPRS那样复杂的技术体系。 The PHS only have limited mobility, it is not as GPRS mobility management requirements as there is a complete sense, it is not necessary to define as complex as GPRS technology system.

因此本发明有针对性地引入MAL层,简洁明了地支持基站切换、流量自动监测等功能。 Thus, the present invention is incorporated in a targeted manner MAL layer, concise support base station handover, automatic flow monitoring functions. 既达到分组传输的目的,又以很低的代价实现了对PHS有限移动性的支持。 Both to achieve the purpose of packet transmission, again a very low cost to achieve the support of the limited mobility PHS. 本发明利用分组交换的技术实现PHS的无线数据传输,提高了带宽:可以为用户提供128Kb/s以上的带宽;多个用户可以共享无线信道进行数据传输;消除移动过程中切换对无线数据传输的影响;用户在移动过程中发生基站的切换将对数据的传输不产生任何影响;可以实现在用户没有数据传输时,自动释放信道资源;在有数据传输时,自动申请信道资源,实现永远在线功能。 The present invention utilizes a packet switched technology of PHS wireless data transmission and improve bandwidth: can provide more than 128Kb / s bandwidth of a user; a plurality of users can share a wireless channel for data transmission; eliminate movement during switching of the wireless data transmission Effect; user does not have any influence transmitting base station handover will data occurs during movement; may be implemented when a user no data is transmitted, automatically release the channel resources; when data is transmitted, automatically request channel resources to achieve always-on function .

附图说明 BRIEF DESCRIPTION

图1是本发明MAL层在PS、CS、分组服务器上示意图图2是本发明MAL层将由基站A建立的SVC(交换虚电路)需要释放,并由基站B重新建立SVC的流程图图3是本发明PS释放无线信道,但保持PPP连接不断开的流程图图4是本发明系统结构图,采用嵌入式实时操作系统,MAL负责连接SVC和PPP。 FIG 1 is a layer of the present invention on the MAL PS, CS, packet server 2 is a schematic diagram of MAL A layer of the present invention by the base station to establish the SVC (Switched Virtual Circuit) to be released, by the base station B to re-establish the SVC 3 is a flowchart of FIG. PS present invention, the radio channel is released, but the PPP connection remains unbroken FIG 4 is a flowchart of a system configuration diagram according to the present invention, embedded real-time operating system, MAL is responsible for the connection and PPP SVC. PPP封装的数据经IP栈发送出去。 PPP encapsulation of data sent over the IP stack.

图5、6是PHS基站间均通过svc实现连接的示意图具体实施方式MAL层将由基站A建立的SVC交换虚电路需要释放,并由基站B重新建立SVC,由PS的MAL层向CS B发送handover connect请求,要求建立数据连接;CS B首先和Packet Server建立SVC,并发送handover connect给Packet Server;Packet Server发送确认应答Confirm给CS B,并将响应的PPP切换到新的SVC上,并释放旧的SVC;在这个过程中,MAL层用新的SVC交换虚电路替换旧的SVC,并保证上层连接的PPP不会断开。 5 and 6 is between the PHS base station are to be released by SVC SVC svc achieve connection layers MAL schematic DETAILED DESCRIPTION A established by the base station, the base station B by re-establish the SVC, transmits a handover to the CS B MAL film PS connect request to establish a data connection; CS B and Packet Server is first established SVC, with sending hANDOVER connect to a Packet Server; Packet Server sends an acknowledgment reply to confirm CS B, PPP and switched in response to the new SVC, with the release of the old the SVC; in the process, MAL new layer replaces the old SVC SVC Switched Virtual circuit, and to ensure that the upper PPP connection is not disconnected.

MAL层在PS、CS、分组服务器上都有,如下图所示,位于X.25和PPP之间。 MAL layer on the PS, CS, packet server has, as shown below, is located between X.25 and PPP. MAL层分成控制面和数据面:1)控制面控制面主要完成连接、切换、休眠等过程的控制,消息类型有:Connect、Disconnect、DormantConnect、DormantDisconnect、DormantHello、HandoverConnect、HandoverDisconnect、Confirm。 MAL layer is divided into a control plane and data plane: 1) the main control plane a control plane connection is completed, switching, control and other sleep message types are: Connect, Disconnect, DormantConnect, DormantDisconnect, DormantHello, HandoverConnect, HandoverDisconnect, Confirm.

●Connect:正常连接请求,用户要求建立连接的请求;●Disconnect:正常断线请求,用户要求断线的请求;●DormantConnect:从休眠状态恢复到连接状态的请求;●DormantDisconnect:进入休眠状态,释放空中接口和SVC的请求;●DormantHello:休眠状态维持请求;●HandoverConnect:基站切换过程中建立新连接的连接请求;●HandoverDisconnect:基站切换过程中释放旧连接的断线请求;●Confirm:确认响应。 ● Connect: normal connection request, connection setup request user requirements; ● Disconnect: normal disconnection request, the user requests disconnection claim; ● DormantConnect: resume from the sleep state to the connected state of the request; ● DormantDisconnect: enter a sleep state, the release air interfaces and SVC request; ● DormantHello: sleep state maintenance request; ● HandoverConnect: a base station handover procedure of a new connection request to establish a connection; ● HandoverDisconnect: a base station handover request is released during the breaking the old connection; ● confirm: acknowledgment.

MAL层中的每一个实体对应着一个PPP连接:MAL实体和PPP连接保持固定的一一对应关系,和X.25的SVC保持可变的一一对应关系,这样通过MAL层就可以在保持PPP连接的情况下使用不同的X.25的SVC。 MAL layer entity corresponding to each of a PPP connection: MAL physical connection and PPP maintain a fixed one to one relationship, and the X.25 SVC variable holding one relationship, so that by MAL PPP layer can be maintained different use SVC in the case of X.25 connection.

在完成单个PPP连接的基础上,可以利用PPP的Multilink功能,将多个PPP连接捆绑,从而达到增加带宽的目的。 Upon completion of the single PPP connection, the PPP Multilink function may be utilized to connect a plurality of PPP bundle, so as to achieve increased bandwidth. 负载均衡和报文重组均能通过Multilink PPP协议完成。 Load balancing and reassembly can be completed by Multilink PPP protocol.

X.25规范对应OSI三层,X.25的第三层描述了分组的格式及分组交换的过程。 X.25 specification corresponds to OSI Layer, the third layer of the X.25 packet format and the procedure described packet exchange. X.25的第二层由LAPB(Link Access Procedure,Balanced)实现,它定义了用于DTE/DCE连接的帧格式。 The second layer is implemented by the X.25 LAPB (Link Access Procedure, Balanced), which defines the frame format for the DTE / DCE connection. X.25的第一层定义了电气和物理端口特性。 X.25 first layer defines the electrical characteristics and physical port.

X.25网络设备分为数据终端设备(DTE)、数据电路终端设备(DCE)及分组交换设备(PSE)。 X.25 network devices into a data terminal equipment (DTE), data circuit-terminating equipment (DCE) and a packet switching equipment (PSE). DTE是X.25的末端系统,如终端、计算机或网络主机,一般位于用户端,Cisco基站就是DTE设备。 X.25 DTE is the end of the system, such as a terminal, a computer network or a host, typically located in the user terminal, the base station is the Cisco DTE. DCE设备是专用通信设备,如调制解调器和分组交换机。 DCE device is a dedicated communication device, such as a modem and a packet switch. PSE是公共网络的主干交换机。 PSE is the backbone of the public switch network.

X.25定义了数据通讯的电话网络,每个分配给用户的x.25端口都具有一个x.121地址,当用户申请到的是SVC(交换虚电路)时,x.25一端的用户在访问另一端的用户时,首先将呼叫对方x.121地址,然后接收到呼叫的一端可以接受或拒绝,如果接受请求,于是连接建立实现数据传输,当没有数据传输时挂断连接,整个呼叫过程就类似我们拨打普通电话一样,其不同的是x.25可以实现一点对多点的连接。 X.25 defines the data communications telephone network, each user is assigned to a port having a x.121 x.25 address, when the user is to apply the SVC (Switched Virtual Circuit), the user end in x.25 when the user access to another end, the other x.121 first call address, and the receiving end can accept or reject the call, if the request is accepted, then the connection is established for data transmission, when there is no off-hook data transmission, the whole process of the call it is similar to what we call ordinary telephone, with the difference that can be achieved x.25-multipoint connections. 其中x.121地址、htc均必须与x.25服务提供商分配的参数相同。 Which x.121 address, htc must be the same as the parameter x.25 ISP assigned. X.25PVC(永久虚电路),没有呼叫的过程,类似DDN专线。 X.25PVC (PVC), does not process the call, similar to the DDN line.

2.有关命令: 2. about the command:

注:1、虚电路号从1到4095,Cisco基站默认为1024,国内一般分配为16。 Note: 1, VC number from 1 to 4095, Cisco default is the base station 1024, assigned to the domestic generally 16.

2、虚电路计数从1到8,缺省为1。 2, VC count from 1 to 8, the default is one.

3、在改变了x.25各层的相关参数后,应重新启动x25(使用clear x25{serialnumber|cmns-interface mac-address}[vc-number]或clear x25-vc命令),否则新设置的参数可能不能生效。 3, after changing the parameters x.25 layers, should restart the x25 (using clear x25 {serialnumber | cmns-interface mac-address} [vc-number] command or clear x25-vc), or a new set of parameter may not take effect. 同时应对照服务提供商对于x.25交换机端口的设置来配置基站的相关参数,若出现参数不匹配则可能会导致连接失败或其它意外情况。 At the same time the control parameters should be x.25 service provider to configure the switch port provided in the base station, if there does not match the parameters may cause a connection failure or other unforeseen circumstances.

实施例:1).在以下实例中每二个PHS基站间均通过svc实现连接。 Example: 1) between every two PHS base stations are connected by svc achieved in the following examples.

2).在以下实例中基站router1和router2均通过svc与router连接,但router1和router2不通过svc直接连接,此三个基站的串口运行RIP路由协议,使用了子接口的概念。 2) are connected by a router svc and in the following examples and the base station router1 router2, and router2 router1 but are not directly connected through svc, this serial RIP routing protocol running three base stations, using the concept of sub-interface. 由于使用子接口,router1和router2均学习到了访问对方局域网的路径,若不使用子接口,router1和router2将学不到到对方局域网的路由。 Due to the use of sub-interfaces, router1 and router2 have learned the path to access the other side of the LAN, without using sub-interfaces, router1 and router2 will not learn to other LAN routing.

子接口(Subinterfaee)是一个物理接口上的多个虚接口,可以用于在同一个物理接口上连接多个网。 Sub-interface (Subinterfaee) a plurality of virtual interface on a physical interface for connecting a plurality of networks on the same physical interface. 我们知道为了避免路由循环,基站支持split horizon法则,它只允许路由更新被分配到基站的其它接口,而不会再分配路由更新回到此路由被接收的接口。 We know that in order to avoid routing loops, base station supports split horizon rule, it only allows routing updates to other interfaces are assigned to the base station, and will not return to the route redistribution routing updates received interface.

无论如何,在广域网环境使用基于连接的接口(象X.25和Frame Relay),同一接口通过虚电路(vc)连接多台远端基站时,从同一接口来的路由更新信息不可以再被发回到相同的接口,除非强制使用分开的物理接口连接不同的基站。 In any event, when the WAN environment based interface (like X.25 and Frame Relay), the same interface to a base station through a plurality of distal VC (VC), from the same interface can no longer route update message is sent back to the same interface, unless forced to use a separate physical interface connecting different base stations. Cisco提供子接口(subinterface)作为分开的接口对待。 Cisco provides a sub-interface (subinterface) be treated as separate interfaces. 你可以将基站逻辑地连接到相同物理接口的不同子接口,这样来自不同子接口的路由更新就可以被分配到其他子接口,同时又满足split horizon法则。 You can be logically connected to the same base interface to different physical sub-interfaces, and routing updates from different sub-interfaces may be allocated to the other sub-interfaces, while meeting split horizon rule.

Claims (3)

1.实现PHS无线分组数据传输的方法,其特征利用X.25协议实现数据分组,用多信道点到点PPP,实现多信道捆绑,以移动适应的方法实现PHS无线分组数据传输;移动适应的模块即MAL层设在PPP和X.25的SVC交换虚电路之间,PPP和X.25的SVC交换虚电路隔离。 A method implemented PHS wireless packet data transmission, wherein the data packets using the X.25 protocol, multi-channel point using PPP, to achieve multichannel bundle, to achieve a method adapted to the mobile PHS wireless packet data transmission; movement adaptation i.e., between the modules MAL PPP and X.25 layer provided on an SVC Switched Virtual circuit, PPP and X.25 SVC isolation of SVC.
2.由权利要求1所述的实现PHS无线分组数据传输的方法,其特征是在终端移动过程中,当从基站A切换到基站B的时候,MAL层将由基站A建立的SVC交换虚电路需要释放,并由基站B重新建立SVC;在这个过程中,MAL层用新的SVC交换虚电路替换旧的SVC,并保证上层连接的PPP不会断开:1)终端PS通过基站CS A和分组服务器Packet Server通信;2)PS在移动到CS B的覆盖范围中,并要切换到CS B上;PS向CS B请求信道,建立无线连接;3)PS的MAL层向CS B发送handover connect请求,要求建立数据连接;4)CS B首先和Packet Server建立SVC,并发送handover connect给Packet Server;5)Packet Server发送确认应答Confirm给CS B,并将响应的PPP切换到新的SVC上;6)CS B发送确认应答confirm给PS,PS将PPP切换到新的信道上;7)Packet Server发送handover connect给CS A,要求断开SVC(交换虚电路);8)CS A发送确认应答Confirm给Packet Server,双 2. The method implemented PHS radio packet data transmission according to claims 1, wherein the terminal during movement, when switching from the base station A to base station B, MAL layer SVC established by the base station A requires SVC releasing, re-established by the base station B SVC; in this process, MAL layer to replace the old with the new SVC SVC Switched Virtual circuit, and to ensure that the connection does not disconnect the PPP upper layer: 1) by terminal PS and base station CS a packet server Packet server communication; 2) PS moving into coverage CS B's, and to switch to the CS B; PS request channel from CS B, wireless connection is established; 3) PS of MAL layer sends handover connect to the CS B request , it requires the establishment of a data connection; 4) CS B and Packet Server is first established SVC, with send handover connect to Packet Server; 5) Packet Server sends an acknowledgment reply to confirm CS B, and switch on the PPP in response to the new SVC; 6 ) CS B transmits acknowledgment to confirm PS, PS PPP switching to a new channel; 7) Packet Server transmits handover connect to the CS a, disconnection requires the SVC (switched Virtual circuit); 8) CS a transmission acknowledgment to confirm Packet Server, double 断开SVC。 Disconnect the SVC.
3.由权利要求1所述的实现PHS无线分组数据传输的方法,其特征是在没有流量的时候,PS释放无线信道,但是保持PPP:1)PS通过CS和Packet Server通信;2)当没有流量时,PS的MAL层发送dormant disconnect给CS;3)CS将dormant disconnect发送给Packet Server,Packet Server将PPP和SVC断开,但保持PPP连接不断开;4)Packet Server发送确认应答Confirm给CS;5)CS发送Confirm给PS,PS将PPP和SVC断开,保持PPP连接不断开;6)Packet Server将SVC释放;7)CS将无线信道释放;8)进入到休眠状态,PPP连接保持,但是信道和SVC都完全释放;9)当PS有数据需要发送时,MA层首先向CS请求信道,并发送Dormant Connect请求;10)CS收到Dormant Connect请求后,首先建立SVC,并发送Dormant Connect给Packet Server;11)Packet Server收到Dormant Connect消息后,将PPP和SVC连接起来,并返回确认消息Confirm;12)CS将Confirm消息发送给PS,PS将PPP和SVC连接起来;13 3. The method of PHS radio transmission implementing the data packet 1, characterized in that when there is no traffic, PS radio channel is released, but the PPP held by the claims: 1) PS through the CS and Packet Server communication; 2) when no flow rate, PS of dormant disconnect to the transmission layer MAL CS;. 3) to a CS dormant disconnect the Packet Server, Packet Server SVC and disconnect the PPP, but PPP connection is not maintained; 4) Packet Server sends an acknowledgment reply to the CS confirm ; 5) CS sends a Confirm to PS, PS and SVC disconnect the PPP, PPP connection is not maintained; 6) Packet Server release the SVC; 7) CS radio channel release; 8) into the dormant state, to maintain the PPP connection, However, channels and SVC are fully released; 9) when the PS needs to send data, MA layer is first to the CS request channel, and transmits Dormant Connect request; 10) CS after receiving Dormant Connect request, first established SVC, and transmits Dormant Connect to the Packet Server; 11) after the Dormant connect message Packet Server receives the PPP and SVC are connected, and returns an acknowledgment message confirm; 12) CS confirm message to the PS, PS and the PPP connected SVC; 13 )进入到正常的数据通信过程。 ) Into the normal data communications.
CN 200610038370 2006-02-20 2006-02-20 Method of implementing transmission of wireless PHS packet data CN100486253C (en)

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Cited By (3)

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WO2009065253A1 (en) * 2007-11-21 2009-05-28 Lucent Technologies Inc. A method for establishing phs packet data communication initiated by an external data network
CN102347955A (en) * 2011-11-01 2012-02-08 杭州依赛通信有限公司 Reliable data transmission protocol based on virtual channels
CN102415150A (en) * 2009-04-23 2012-04-11 瑞典爱立信有限公司 Ps to cs handover indicator

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CN1206274A (en) 1998-05-06 1999-01-27 日本电气株式会社 PHS subscriber loop multiplex communication system
CN1111321C (en) 1999-09-02 2003-06-11 深圳市中兴通讯股份有限公司 PHS mobile database system on V5 interface and its calling method
CN1312875C (en) 2004-01-05 2007-04-25 中兴通讯股份有限公司 PHS system position synchronous method based on digital lock phase ring and realizing device
CN100394818C (en) 2004-02-19 2008-06-11 Ut斯达康通讯有限公司 Radio tie-up method for PHS mobile phone with home base station and moible phone radio number burning method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009065253A1 (en) * 2007-11-21 2009-05-28 Lucent Technologies Inc. A method for establishing phs packet data communication initiated by an external data network
CN101843052B (en) 2007-11-21 2012-10-24 朗讯科技公司 A method for establishing PHS packet data communication initiated by an external data network
CN102415150A (en) * 2009-04-23 2012-04-11 瑞典爱立信有限公司 Ps to cs handover indicator
CN102415150B (en) * 2009-04-23 2014-09-24 瑞典爱立信有限公司 Method, node and system for communicating telecommunication network of user equipment
US9980181B2 (en) 2009-04-23 2018-05-22 Telefonaktiebolaget L M Ericsson (Publ) PS to CS handover indicator
CN102347955A (en) * 2011-11-01 2012-02-08 杭州依赛通信有限公司 Reliable data transmission protocol based on virtual channels

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