CN1870818A - Method for quickly switchover using appointed range finding code - Google Patents

Method for quickly switchover using appointed range finding code Download PDF

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Publication number
CN1870818A
CN1870818A CN 200510073770 CN200510073770A CN1870818A CN 1870818 A CN1870818 A CN 1870818A CN 200510073770 CN200510073770 CN 200510073770 CN 200510073770 A CN200510073770 A CN 200510073770A CN 1870818 A CN1870818 A CN 1870818A
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station
ranging code
base station
user
handover
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CN 200510073770
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Chinese (zh)
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郑旭峰
王海
具昌会
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北京三星通信技术研究有限公司
三星电子株式会社
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Priority to CN 200510073770 priority Critical patent/CN1870818A/en
Publication of CN1870818A publication Critical patent/CN1870818A/en

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Abstract

A rapid switchover method realized by a designated location code includes the steps: a user station sends out switching request to a target station by a current service base station using the signaling channels among the base stations, the target base station designates 'quick switchover measurement code' for the user station and / or the area it is located and the user station launches switchover request with the' quick switchover measurement code ' to the target station. According to the detected code, the target station receives relevant information of the user station for switchover. Among the existing communication systems using access codes and / or location code, such as broadband metropolitan area network standard (IEEE 802.16e standard. HIPERMAN series standards), users can reduce the information exchange between user's station and the target base stations.

Description

利用指定测距码实现快速切换的方法 Ranging code with the designated implemented method of fast switching

技术领域 FIELD

本发明涉及应用接入码和/或测距码的无线通信系统,特别涉及利用指定测距码实现快速切换的方法。 The present invention relates to the use an access code and / or a wireless communication system, the ranging code, and more particularly to a method using the designated fast handover ranging code.

背景技术 Background technique

接入码:是指在无线通信系统中,进行接入(包括初始接入、周期接入等接入操作)、切换等操作时使用的码字,通过使用接入码,系统可以识别用户的接入、切换等各种请求。 Access code: refers to a wireless communication system, the access codeword (including initial access, the access cycle access operation, etc.), used for switching operation and the like, by using the access code, the system can recognize the user's various requests access, switching and the like.

接入码,在一些文献中也称为测距码(Ranging Code),本文中,如无特别声明,二者等同使用。 Access code, also referred to in the literature ranging code (Ranging Code), herein, Unless otherwise stated, the use of two equivalents.

在使用接入码和/或测距码的系统中,用户台可利用接入码和/或测距码发起切换过程。 In the system using the access code and / or ranging code, the subscriber station can use an access code and / or ranging code to initiate a handover procedure. 如:IEEE802.16是一个宽带无线城域网规范,IEEE802.16e是IEEE802.16的扩展模式,IEEE802.16e的设计目标是基于IEEE802.16规范,在支持用户固定接入的基础上,扩展IEEE802.16以支持用户的移动性。 Such as: IEEE802.16 is a broadband wireless metropolitan area network standard, the IEEE802.16e is an extension mode of IEEE802.16, the design goal is based on the IEEE802.16e specification IEEE802.16, on the basis of the fixed access user support, extended IEEE802 .16 to support user mobility.

在IEEE802.16e的物理层规范中,对于OFDMA模式的切换过程,使用的是基于切换测距码的方法。 In the physical layer specification of IEEE802.16e, for the OFDMA mode switching process, a method using a handover ranging codes. 切换测距码和初始测距码在0~255(8位码长)范围内选择,切换测距码和初始测距码的范围由基站设定(例如:可以设置切换测距码范围为17~64,初始接入码范围为65~96),用户台在进行切换时使用切换测距码,在初始接入时使用初始测距码,基站通过检测用户台使用的不同码字,对于用户台的请求采取不同的处理方法。 Handover ranging codes and initial ranging codes from 0 to 255 (8-bit code length) selected within the scope handoff ranging code and the initial ranging code set by the base station (e.g.: handoff ranging code may be provided in the range of 17 to 64, the initial access code range 65 to 96), handoff ranging code using the user station the handover is performed, using the initial ranging code at the time of initial access, the base station use different codewords detected by the subscriber station, the user requesting station to take a different approach.

如图1所示,用户台利用“切换测距码”发起的切换过程,具体实现步骤如下:1.用户台利用“切换测距码”发送切换请求,向目标基站表明该用户台正在发起切换; 1, the subscriber station using a handover procedure "Handover ranging codes" started, specific implementation steps are as follows: 1. The user station using a "handover ranging code" sends a handover request to the target base station indicates that the user is initiating a handover ;

2.目标基站通过对“切换测距码字”的检测,获知用户台的切换请求;并通过发送包含功率、定时调整参数的测距响应(RNG-RSP)消息,对于用户台的发射功率、定时等物理参数进行调整,以便更好地构造二者之间的物理层链路。 2. The target base station by detecting "handoff ranging code word", and finds that subscriber station a handover request; through power transmission comprising, a timing adjustment parameter ranging response (RNG-RSP) message, for transmitting power of the subscriber station, other physical parameters to adjust the timing, structure to better physical layer link therebetween. 该过程可能需要多次重复才能够完成;3.目标基站在随后的帧中,为该用户台分配上行发送时隙(利用上行时隙分配消息UL-MAP实现),供该用户台发送接入请求消息(RNG-REQ);4.用户台在目标基站指定的接入时隙中,发送包含媒体接入控制(MAC)地址、前次服务基站号(Serving BS ID)、用户前次鉴权信息在内的接入请求消息(RNG-REQ);5.目标基站在接收到用户台的接入请求消息(RNG-REQ)后,利用基站间的信令通道对用户台的信息进行确认,并在随后帧中给出相应的接入请求响应消息(RNG-RSP)。 The process may be able to complete multiple iterations; 3 target base station in subsequent frames, the uplink transmission slot allocated for the user station (using the uplink slot allocation to achieve UL-MAP message), the subscriber station sends an access for request message (RNG-REQ);. 4 users designated target base station in the access slot, transmits a media access control (MAC) address, number of previous serving base station (serving BS ID), user authentication previous information including an access request message (RNG-REQ);. 5 after the target base station request message (RNG-REQ) received at the access to the subscriber station, using the signaling path between the base station of the information of the user for confirmation, access request and the corresponding response message (RNG-RSP) in the subsequent frame. 该消息中包含:用户台的新的基本管理连接标识(B-CID)和新的主管理连接标识(P-CID);6.用户台接收到上述接入请求响应消息(RNG-RSP)后,就可以在新小区中使用新的基本管理连接标识和主管理连接标识,从而完成切换过程。 The message contains the: new basic management connection identifier of the subscriber station (B-CID) and a new primary management connection identifier (P-CID); 6 subscriber station in response to receiving the access request message (RNG-RSP) after , you can use the new basic management connection identifier and a primary management connection identifier in the new cell, thereby completing the handover procedure.

现有的使用接入码和/或测距码的系统中(如:IEEE802.16e/D5规范)所用的切换方法,没有充分利用基站间的信令通道,切换过程步骤较多,对于保证切换的实时性不利,对于空中接口的信道资源使用也存在一定浪费。 Using a conventional access code and / or ranging code in the system (eg: IEEE802.16e / D5 specification) used for switching method, there is no full use of the signaling channel between a base station, a handover procedure more steps, for ensuring switching real-time unfavorable for air interface channel resources there are some waste.

发明内容 SUMMARY

本发明的目的是提供一种利用指定接入码和/或测距码实现快速切换的方法。 Object of the present invention is to provide a method of using a specified access code and / or fast handover ranging code.

为实现上述目的,一种利用指定测距码实现快速切换的方法,包括步骤: To achieve the above object, a method of using a specified ranging code to achieve fast handover, comprising the steps of:

用户台通过当前服务基站利用基站间信令通道向目标基站发起切换请求;目标基站为用户台 和/或 用户台所在的小区,指定“快速切换测距码”;用户台使用“快速切换测距码”向目标基站发起切换请求时;目标基站根据所探测的“快速切换测距码”获知用户台的有关信息用于切换。 Subscriber station by a serving base station currently using the inter-base station signaling channel to a target base station initiates a handover request; target cell base station and user stations / or the subscriber station is located, designated "fast handoff ranging code"; the subscriber station using the "fast handover ranging "when initiating a handover request to the target base station; target base station in accordance with the detected" fast handoff ranging code symbols "learn information about the user station for handover.

在现有的使用接入码 和/或 测距码的通信系统中,如宽带城域网络规范(IEEE802.16e规范、HIPERMAN系列规范等)中,使用本发明的方法,可以减少用户台与目标基站之间的信息交互,实现快速切换操作,提高空中接口的传输效率。 In the conventional use of an access code and / or a ranging code in a communication system, such as broadband metropolitan area network specification (the IEEE802.16e specification, HIPERMAN series of specifications, etc.), using the method of the invention can be reduced to the target subscriber station information exchange between the base station, fast switching operation, improving the transmission efficiency in the air interface.

附图说明 BRIEF DESCRIPTION

图1是利用测距码实现切换的空中接口交互过程示意图;图2是利用指定测距码实现快速切换的空中接口交互过程示意图;图3是基站请求、用户台决定的包含网络辅助的切换过程的参考消息顺序图;图4是基站请求、用户台决定的包含网络辅助的快速切换过程的参考消息顺序图。 1 is a schematic using a ranging code to realize the process of switching the air interface interaction; FIG. 2 is a ranging code using the designated interaction airinterface schematic fast switching; FIG. 3 is a request for a base station, the subscriber station determines a handover procedure comprising a network-assisted with reference to message sequence diagram; FIG. 4 is a base station request, with reference to FIG fast handover message process sequence comprising an auxiliary network subscriber station is determined.

具体实施方式 Detailed ways

首先对于“快速切换测距码”进行了说明,然后提出了利用“快速切换测距码”实现“快速切换”的方法。 First, for "fast handoff ranging code" has been described, and a method "fast handoff ranging code" realize "fast switching" is used.

“快速切换测距码”的构成:“快速切换测距码”是“测距码”的一个子集,由基站预留专门用于快速切换。 Constitutes a "fast handoff ranging code" in: "Fast handoff ranging code" is "ranging code" is a subset of the reservation by the base station specifically for fast switching.

与切换测距码的关系 Relationship handover ranging code

“快速切换测距码”可以是原“切换测距码”的一个子集,这样,基站可以根据情况自主决定“切换测距码”集合中“快速切换测距码”子集和“非快速切换测距码”子集的比例关系。 "Fast handoff ranging code" may be the original "handoff ranging code" is a subset of this, the base station may decide "Handover ranging codes" According to a subset of the set of "fast handoff ranging code" and "non-fast proportional handoff ranging code "subset.

当“快速切换测距码”子集扩大到等同于“切换测距码”集合时,如果使用动态指配,可以达到很好的快速切换效果,此时需要在基站间信令通道上传送的信息也最多;如果使用静态指配,那么可以通过配置,达到和原系统,即未使用“快速切换测距码”系统,相同的效果。 When the "fast handoff ranging code" is equivalent to a subset of the expanded "Handover ranging codes" collection, if dynamic assignment, fast switching can be achieved very good results, this case needs to be transmitted between the base station over the signaling channel information is also up; If static assignment, it can be configured to achieve, and the original system, i.e. the effect of not using "fast handoff ranging code" system, the same.

“快速切换测距码”的指配基站通过基站间的信令通道告知周围的相邻基站,其指定的“快速切换测距码”。 "Fast handover ranging code" is assigned to inform neighboring base stations surrounding the base station through the signaling path between the base stations, designated "fast handoff ranging code." 随后,相邻的各个基站可以通过空中接口传递该信息给各自小区中的用户台,供它们用于向目标基站的快速切换。 Then, the adjacent base stations can be transmitted through each of the air interface the respective information to the subscriber station in the cell, they are used for the fast handover to the target base station.

动态指配和静态指配动态指配是指针对每一次切换进行“快速切换测距码”的指配,每次快速切换过程完成后,都需要对“快速切换测距码”进行收回;动态指配实质上是针对用户台的指配;静态指配是指在一定的时间内保持对“快速切换测距码”的指配,即将该“快速切换测距码”指配给某个小区,并保持一定时间;静态指配实质上是针对基站的指配;以下部分主要是针对动态指配,即用户台指配进行说明的;静态指配即针对基站的指配原理和过程类似。 Static and dynamic assignment of dynamic assignment means for assigning each time switching of "fast handoff ranging code" is assigned, each fast handover process is complete, all need for "fast handoff ranging code" for recovery; dynamic assignments assigned substantially for the user station; refers to maintaining a static assignment of "fast handoff ranging code" assignment, i.e. the "fast handoff ranging code" is assigned to a certain cell within a certain period of time, and for a time; substantially static assignment means for a base station with; the part is for a dynamic assignment, i.e. the subscriber station of the assignment will be described; i.e., similar to static assignments with the principle and process means for a base station.

用户台利用“快速切换测距码”发起的快速切换过程,具体实现步骤如下:1.当用户台或者当前服务基站准备发起切换时,当前服务基站利用基站间信令通道,向目标基站发起请求,在请求信息中包含该用户台的相关信息;目标基站响应该请求,返回响应信息和它为该用户台切换所指配的“快速切换测距码”。 Subscriber station using a fast handover procedure "fast handoff ranging code" started, specific implementation steps are as follows: 1. When the subscriber station or the current serving base station to initiate a handover preparation, the current between the serving base station using the signaling channel, send a request to the target base station It contains information about the subscriber station in the request message; target base station in response to the request, and it returns a response message for the user to switch the assigned station "fast handoff ranging code." 当前服务基站利用空中接口通知小区中准备切换的用户台;(注:相对于“现有技术说明”部分的“切换过程描述”,步骤1中增加了针对“快速切换测距码”,而在当前服务基站和目标基站间进行信息交互的内容。) Current serving cell notifies the base station uses an air interface in preparation for the handover user station; (Note: with respect to the "Prior Art" "handover procedure described in" portion added in step 1 for the "fast handover ranging code", in the current between the serving and target base content information exchange.)

2.用户台利用从当前服务基站得到的,针对目标基站的“快速切换测距码字”发送切换请求,向目标基站表明该用户台正在发起切换;3.目标基站通过对“快速切换测距码字”的检测,获知用户台的切换请求;通过发送包含功率、定时调整参数的测距响应(RNG-RSP)消息,对于用户台的发射功率、定时等物理参数进行调整,以便更好地构造二者之间的物理层链路。 2. The user station from a current serving base station using the obtained target base station for the "fast handoff ranging code word" send handover request to the target base station indicates that the user is initiating a handover; 3. the target base station through the "fast handover ranging detecting the code word ", and finds that subscriber station a handover request; through power transmission comprising, a timing adjustment parameter ranging response (RNG-RSP) message, a transmit power for the physical parameters of the subscriber station, the timing adjustment, etc., in order to better the link between the physical layer structure. 该过程可能需要多次重复才能够完成;4.由于目标基站之前已经通过基站间信令通道得到所需要的用户台信息,在随后的帧中,可以直接发送接入请求响应消息,该消息中包含:用户台的新的基本管理连接标识(B-CID)和新的主管理连接标识(P-CID)。 This process may require repeated able to complete;. 4 has, in the subsequent frame may be transmitted directly between the base station an access request response message to the subscriber station the signaling channel to obtain the information needed by the target base station since before, the message comprising: a basic management connection identifier new subscriber station (B-CID) and a new primary management connection identifier (P-CID). 用户台接收到上述接入请求响应消息(RNG-RSP)后,就可以在新小区中使用新的基本管理连接标识和主管理连接标识,从而完成切换过程。 After a user station in response to receiving the access request message (RNG-RSP), you can use the new basic management connection identifier and a primary management connection identifier in the new cell, thereby completing the handover procedure.

空中接口的交互过程(包括步骤2,3,4)如图2所示。 Air interface interaction (step comprises 2,3,4) as shown in FIG. 从上述的过程描述,并对照“现有技术说明”部分的“切换过程描述”,可以发现,由于利用了基站前信令通道进行了用户信息和指定“快速切换测距码”的传递,达到了减少了空中接口交互步骤的目的。 From the above description of the process, and control "Prior Art" "describes a handover procedure" section, can be found, since the signaling channel of the base station before the transmission of user information and designated "fast handover ranging code", to achieve the purpose of reducing air interactive step interface.

在“快速切换”中不再需要以下步骤:目标基站分配时隙供用户台发送信息,用户台发送包含MAC地址、当前服务基站标识在内信息请求的过程,从而实现了快速的切换过程,并节省了空中接口资源。 In the "fast switching" no longer requires the following steps: a target base station allocates time slots for the user to send information, the user station transmits a MAC address, the process including the current serving base station identification information request, in order to achieve a fast handover procedure, and saving air interface resources.

实施例在IEEE802.16e/D5规范中,给出了由基站请求、用户台决定的包含网络辅助的切换过程的参考消息顺序图(MSC),即IEEE802.16e/D5规范的图E.11。 Example In IEEE802.16e / D5 specification, given with reference to the message sequence chart (MSC) comprising a network-assisted handover procedure is determined by the base station requests, subscriber station, i.e. IEEE802.16e / D5 specifications FIG E.11. 在本发明中,如图3所示,基站请求、用户台决定的包含网络辅助的切换过程的参考消息顺序图(IEEE802.16e规范提供)。 In the present invention, it is shown in Figure 3, the base station requests, with reference to message sequence diagram comprising a network assisted handover procedure determined subscriber station (provided the IEEE802.16e specification).

在该情况下应用快速切换方法的实施步骤如图4所示,其中快速切换方法所增加的部分被特别标出。 In this embodiment the step of application where fast switching method shown in Figure 4, wherein the rapid increase in the partial switching method is specifically indicated.

Claims (8)

1.一种利用指定测距码实现快速切换的方法,包括步骤:用户台通过当前服务基站利用基站间信令通道向目标基站发起切换请求;目标基站为用户台和/或用户台所在的小区,指定“快速切换测距码”;用户台使用“快速切换测距码”向目标基站发起切换请求时;目标基站根据所探测的“快速切换测距码”获知用户台的有关信息用于切换。 CLAIMS 1. A method implemented using a ranging code specified fast handover, comprising the steps of: a user station by station between the current serving base station uses the signaling channel to a target base station initiates a handover request; target base stations for the user and / or subscriber stations located a cell , designated "fast handoff ranging code"; the subscriber station using the "fast handoff ranging code" initiates a handover request to the target base station; target base station based on the detected "fast handoff ranging code" learn information about the user station for switching .
2.按权利要求1所述的方法,其特征在于还包括:基站通过基站间的信令通道告知周围的相邻基站,其指定的“快速切换测距码”;相邻的各个基站通过空中接口传递指定的“快速切换测距码”给各自小区中的用户台。 2. The method according to claim 1, characterized by further comprising: informing the neighboring base stations surrounding the base station through the signaling path between the base stations, designated "fast handoff ranging code"; each of the base stations adjacent to the air passing the interface designated "fast handoff ranging code" to the subscriber station in each cell.
3.按权利要求1所述的方法,其特征在于所述“快速切换测距码”是“测距码”的一个子集。 3. The method as claimed in claim 1, wherein the "fast handoff ranging code" is "ranging code" is a subset.
4.按权利要求1所述的方法,其特征在于“快速切换测距码”的指配包括动态指配或静态指配。 4. The method as claimed in claim 1, wherein the "fast handoff ranging code," the assignment comprises assigning a dynamic or static assignment.
5.按权利要求1所述的方法,其特征在于还包括步骤:当前服务基站利用空中接口通知小区中准备切换的用户台。 5. The method as claimed in claim 1, characterized by further comprising the step of: using a current serving base station over the air interface in the cell preparation for the handover notification subscriber station.
6.按权利要求1所述的方法,其特征在于所述用户台的有关消息包括发射功率和定时参数。 6. The method as claimed in claim 1, characterized in that the message about the user station comprises a transmit power and timing parameters.
7.按权利要求6所述的方法,其特征在于所述目标基站调整用户台的发射功率和定时参数,以便更好地构造二者之间的物理层链路。 7. The method as claimed in claim 6, wherein said target base station to adjust transmit power and timing parameters of the user station, configured to better physical layer link therebetween.
8.按权利要求1所述的方法,其特征在于所述切换包括:目标基站向用户台直接发送接入请求相应消息,所述消息为用户台的新的基本管理连接标识和新的主管理连接标识;用户台接收到上述请求响应消息后,在新小区中使用新的基本管理连接标识和主管理连接标识完成切换过程。 8. The method according to claim 1, characterized in that said switch comprising: a respective target base station sends an access request message directly to the subscriber station, the message is a new basic management connection identifier and the new subscriber station the master management connection identifier; subscriber station after receiving the request response message, using the new basic management connection identifier and a primary management connection identifier handover procedure is completed in the new cell.
CN 200510073770 2005-05-24 2005-05-24 Method for quickly switchover using appointed range finding code CN1870818A (en)

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WO2009086794A1 (en) * 2008-01-04 2009-07-16 Mediatek Inc. Handover controlling process capable of detecting lost handover message
CN101878602A (en) * 2007-11-29 2010-11-03 三星电子株式会社 Apparatus and method for performing an expedited handover using a dedicated ranging channel in a wireless network
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CN101878602A (en) * 2007-11-29 2010-11-03 三星电子株式会社 Apparatus and method for performing an expedited handover using a dedicated ranging channel in a wireless network
WO2009086794A1 (en) * 2008-01-04 2009-07-16 Mediatek Inc. Handover controlling process capable of detecting lost handover message
US8369283B2 (en) 2008-01-25 2013-02-05 Lg Electronics Inc. Method for reducing handover latency
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US9241291B2 (en) 2008-06-23 2016-01-19 Lg Electronics Inc. Method for reducing handover interruption time in terminal
CN102177745A (en) * 2008-10-07 2011-09-07 摩托罗拉移动公司 Method and apparatus for optimizing network entry during handoffs in a wireless communication network
US8964690B2 (en) 2008-10-07 2015-02-24 Google Technology Holdings LLC Method and apparatus for optimizing network entry during handoffs in a wireless communication system
CN102177745B (en) * 2008-10-07 2014-03-05 摩托罗拉移动公司 Method and apparatus for optimizing network entry during handoffs in wireless communication network
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