CN100454831C - Bandwidth request method in WiMAX system - Google Patents

Bandwidth request method in WiMAX system Download PDF

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CN100454831C
CN100454831C CN 200510078715 CN200510078715A CN100454831C CN 100454831 C CN100454831 C CN 100454831C CN 200510078715 CN200510078715 CN 200510078715 CN 200510078715 A CN200510078715 A CN 200510078715A CN 100454831 C CN100454831 C CN 100454831C
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bandwidth
service
bandwidth request
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ss
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CN1878084A (en
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丁汉文
吴建军
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华为技术有限公司
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Abstract

本发明公开了一种微波接入全球互通(WiMAX)系统的带宽请求方法,该方法包括:A.SS分别计算每种业务类型的所需带宽,所述业务类型的所需带宽为该业务类型中所有业务连接所需带宽的总和;为每种业务类型分别构造一个带宽请求报文;所构造的每种业务类型的带宽请求报文携带计算得到的该业务类型所需带宽;B.SS将步骤A所构造的带宽请求报文发送至BS。 The present invention discloses a Worldwide Interoperability for Microwave Access (WiMAX) system bandwidth request method, the method comprising: A.SS required bandwidth for each type of service are calculated, the bandwidth required for the service type of the service type the sum of all the bandwidth required to service connection; for each service type configured a bandwidth request message, respectively; the configuration of each type of service request packet bandwidth required bandwidth for the service type calculated; B.SS the step a configuration of a bandwidth request message to the BS. 应用本发明方法能够减少带宽请求报文占用的空口资源。 The method of application of the present invention can reduce the air interface resource occupied bandwidth request packet.

Description

一种徵波接入全球互通系统的带宽请求方法 One symptom of a wave a WiMAX system bandwidth request method

技术领域 FIELD

本发明涉及微波接入全球互通(WiMAX)系统的宽带接入技术,特別涉及一种WiMAX系统的带宽请求方法。 The present invention relates to Worldwide Interoperability Microwave Access (WiMAX) system broadband access technology, and particularly relates to a method for bandwidth request WiMAX system.

背景技术 Background technique

目前,IEEE802.16协议定义了面向城域的、能提供多种业务的点对多点宽带固定无线接入系统的空中接口和媒体访问控制(MAC)层。 Currently, IEEE 802.16 air interface protocol defines medium access control and Metro-can provide a variety of business-to-multipoint fixed wireless broadband access systems (MAC) layer. 该IEEE 802.16协议规定了WiMAX系统空中接口部分的协议层,主要包括物理层(PHY)和MAC层两部分。 The IEEE 802.16 protocol specifies the air interface protocol layer portions in the WiMAX system, including two portions of the physical layer (PHY) and MAC layers. 在符合IEEE 802.16协议的点到多点(PMP) 系统中, 一个基站(BS)可以带多个用户站(SS)。 In compliance with IEEE 802.16 protocol multipoint (PMP) system, a base station (BS) with a plurality of user stations can (SS). 每个SS可支持上述四种业务类型并存,每种业务类型可以有多个业务连接存在。 Each SS may support coexistence of these four types of service, each type of service may have multiple service connections exist. 并且定义:从BS到SS的方向为下行,从SS到BS的方向为上行。 And defining: a direction from the BS to the SS for the downlink from the SS to the BS in the uplink direction.

支持多类型业务是正EE 802.16协议的重要特性之一。 Support multiple types of services is one of the important characteristics of the positive EE 802.16 protocol. IEEE 802.16协议根据业务数据特性将所有业务分成四种类型,包括:主动分配业务(UGS, Unsolicited Grant Service)、实时轮询业务(rtPS, Real-time Polling Service)、 非实时轮询业务(nrtPS, Non Real-time Polling Service)、和尽力而为(BE, Best effort)业务。 The IEEE 802.16 protocol service data into service characteristics of all four types, comprising: an active distribution service (UGS, Unsolicited Grant Service), real-time polling service (rtPS, Real-time Polling Service), non-real-time polling service (nrtPS, Non Real-time Polling service), and best effort (BE, Best effort) business. 其中,除了具有恒定速率的UGS以外,其它三种业务的连接若要享有上行带宽,都要经历SS请求带宽和BS指配带宽的过程。 Wherein, in addition to having a constant rate of UGS, connected to the other three services Related upstream bandwidth, go through the BS and the SS requests bandwidth, the bandwidth assignment process. 也就是说:对于rtPS、 nrtPS和BE业务连接而言,如果某个业务连接需要向上行方向发送数据报文,SS需要事先通过发送带宽请求报文向BS提出带宽申请,并在带宽请求报文中标识所需带宽值;当BS接收到来自SS的带宽请求报文之后,根据空口资源情况,为该SS指配一定数量的带宽,通过信令UL一MAP消息通知SS为其指配的上行带宽值;SS在下行方向接收并解 That is: For rtPS, nrtPS and BE service connection, if a row direction up the service connection needs to send data packets, SS requires prior bandwidth request message by sending a bandwidth request made to the BS, and bandwidth request packets identifying the desired bandwidth value; when the BS receives a bandwidth request from the SS after the packet, according to air interface resources, with a certain amount of bandwidth, means for SS, SS notifies its assigned uplink UL signaling through a MAP message bandwidth value; solution and the SS receives in the downlink direction

析UL一MAP消息,从中提取BS指配的带宽.这里,带宽请求报文基本有两种存在方式: 一、带宽请求头方式,采用六字节的带宽请求头(Bandwidth R叫uest Header)作为带宽请求报文,该带宽请求头携带自身对应的业务连接的连接标识符(CID)、以及所需带宽值等信息,此种方式可以请求带宽增量,也可以请求带宽总量;二、带宽请求子头方式,也称为捎带(Piggyback) 方式,带宽请求报文由授权管理子头和其所附加的数据报文构成。 Analysis of a UL MAP message from BS assigned bandwidth extracting Here, the bandwidth request message exists in two basic ways: a bandwidth request header manner, using six-byte bandwidth request header (Bandwidth R called uest Header) as the bandwidth request message, the bandwidth request header carries its own connection identifier corresponding to the service connection information (the CID), the desired bandwidth value and the like, may request bandwidth increment this way, the amount of bandwidth may be requested; Second, the bandwidth subheader requesting mode, also called piggyback (piggyback) mode, the bandwidth request message composed by an authorized management subheader and the data packets which it is attached. 通常采用授权管理子头(Grant Management Subheader)作为宽请求子头,该授权管理子头通常为附加在数据报文后面的两个字节,该两个字节携带所需带宽值等信息,此种方式通常用来请求带宽增量。 Usually authorization management subheader (Grant Management Subheader) sub-header as the bandwidth request, the authorization management subheader is usually attached to the back of the packet data message two bytes, two bytes of the message carrying the desired bandwidth value and the like, this ways commonly used to request bandwidth increment. 这里,所述带宽增量表示在上次请求的带宽的基础上增加的带宽值,并可采用带宽请求头中类型(Type)字段里的一个比特位来指示请求带宽增量还是总量。 Here, the bandwidth is increased on the basis of increments of the last request bandwidth value of the bandwidth, and the bandwidth request header using field type (Type) in the bit to indicate a request bandwidth or an incremental amount.

其中,BS指配带宽的策略是基于整个SS的,也就是为整个SS的所有业务连接统一指配带宽。 Which, BS assigned bandwidth strategy is based on the entire SS, the assigned bandwidth that is uniform for all business connections throughout the SS. 由于,每个SS被BS分配唯一的基本连接标识符(Basic CID),因此BS是针对当前SS对应的Basic CID来指配带宽的, 并且,在指配带宽时,BS并不指明具体每个业务连接享有的带宽,而由SS 按照特定的算法把BS指配的带宽具体调度给的各业务连接。 Because, each BS is assigned a unique SS basic connection identifier (Basic CID), the BS Basic CID is for the SS corresponding to the currently assigned bandwidth, and, when the assigned bandwidth, each BS is not particularly specified Related service connection bandwidth, the SS and the BS according to a particular algorithm specific bandwidth assigned to each scheduled service connection.

其中, 一个SS可以为三种业务请求带宽,并且每种业务有若千业务连接,每个业务连接对应唯一的CID,通常一个SS对应数量较多的业务连接CID。 Wherein SS may request a service bandwidth into three, and each service if there are one thousand service connection, each service connected to the CID corresponds to a unique, SS typically corresponding to a large number of service connection CID. 每当一个业务连接有緩存的数据报文时,该业务连接就需要申请上行带宽来发送数据报文。 Whenever a service connection with a packet data cache, connected to the service will need to request upstream bandwidth to transmit data packets. SS每发送一个无线帧时,如果当前有需要申请带宽的业务连接,则计算每一需要申请带宽的业务连接的所需带宽,然后为每一需要申请带宽的业务连接分别构造带宽请求报文并发送给BS。 Each of the SS transmits a radio frame, if there is a need to apply the current service connection bandwidth, the required bandwidth is calculated for each required bandwidth traffic connection request, and the bandwidth for the service connection are configured to apply for bandwidth for each request packet, and sent to the BS.

根据以上描述可见,SS发送的带宽请求报文是基于各业务连接CID的, 而BS指配带宽却是基于SS的Basic CID,这种基于各业务连接CID的带宽请求机制在实际应用中将产生如下问題: According to the above description can be seen, the SS transmits a bandwidth request message is based on the CID for each service connection, and the BS assigned bandwidth is the Basic CID to the SS, which is generated in a practical mechanism based on a bandwidth request of each service connection CID the following questions:

由于,每个BS下有多个SS,每个SS又有多个业务连接。 Since, at each of a plurality of the BS SS, each SS there are a plurality of service connection. 在请求带宽时,SS将发送各个业务连接的带宽请求报文至BS。 When the bandwidth request, SS transmits the bandwidth of each service connection request message to the BS. 这样,在SS的上行子 Thus, in the SS in the uplink sub

帧里,将出现大量的带宽请求报文。 Frame, a large number of bandwidth request message will appear. 这些大量的、基于每个业务连接CID 的带宽请求报文将占用大量宝贵的空口资源,使实际的业务数据传输速率迅速下降。 A large number of these, based on the bandwidth of each service connection request message CID take up a lot of valuable air interface resources, that the actual service data transmission rate decreased rapidly.

比如:设定一个SS有16个业务连接需要申请上行带宽,且带宽请求报文以6字节的带宽请求头方式存在, 一个无线帧的帧周期为2.5ms。 For example: to set SS has a need to request service connection 16 upstream bandwidth, and the bandwidth request message to a 6-byte bandwidth request header is present embodiment, one frame period of the radio frame is 2.5ms. 则在这一帧内该SS的带宽请求报文的开销是16x6x8to,^76幼/to。 In the frame of the SS that bandwidth request message overhead 16x6x8to, ^ 76 immature / to. 若以速率来衡量该 In terms of the rate measure

带宽请求报文的开销,则如下面公式所示: Overhead bandwidth request message, then, as shown in the following formula:

16x6x8to,v , ^-: 307.2/— 16x6x8to, v, ^ -: 307.2 / -

以上例子可见,采用现有技术请求带宽时,将产生如此之大的带宽请求报文开销,这将占用大量宝贵的空口资源,并显著降低ss的数据传输速率。 The above example can be seen when using the prior art requested bandwidth, to produce such a large bandwidth request packet overhead, which takes a lot of valuable air interface resources, and significantly reduce the data transmission rate of ss.

当ss拥有的业务连接数量较多时,带宽请求报文的开销将更加可观。 If the number of businesses owned by ss connection, bandwidth request packet overhead even more impressive.

综上所述,现有的带宽请求技术未能有效利用空口资源来请求带宽,如 In summary, the conventional technology can not effectively use a bandwidth request resources to request bandwidth air interface, such as

果有大量带宽请求报文突然同时发送,将使ss上行的业务数据传输速率受 If there is a sudden large bandwidth request packets transmitted simultaneously, will ss uplink service data transmission rate by

到严重影响。 To severely affected. 发明内容 SUMMARY

有鉴于此,本发明的主要目的在于提供一种WiMAX系统的带宽请求方法, 能够减少带宽请求报文对空口资源的占用。 In view of this, the main object of the present invention is to provide a WiMAX system bandwidth request method, it is possible to reduce the occupancy of the bandwidth request packet air interface resources.

为达到上述目的,本发明的技术方案是这样实现的: 本发明公开了一种WiMAX系统的带宽请求方法,该方法包括: To achieve the above object, the technical solution of the present invention is implemented as follows: The present invention discloses a method for bandwidth request WiMAX system, the method comprising:

A. SS分别计算每种业务类型的所需带宽,所述业务类型的所需带宽为该业务类型中所有业务连接所需带宽的总和;为每种业务类型分别构造一个带宽请求^t艮文;所构造的每种业务类型的带宽请求报文携带计算得到的该业务类型所 A. SS calculates the sum of the bandwidth required for each service type, service type of the bandwidth required for the service type required bandwidth for all traffic connection; for each service type respectively configured a bandwidth request message Gen ^ t ; constructed bandwidth of each type of service request packet of the service type being calculated

需带宽; Bandwidth-hungry;

B. SS将步骤A所构造的带宽请求报文发送至BS。 B. SS constructed Step A bandwidth request message to the BS.

其中,所述用户站SS分别计算每种业务类型的所需带宽包括,用户站SS Wherein the subscriber station SS calculates a required bandwidth for each traffic type includes a subscriber station SS

查询自身当前緩存的各个业务连接等待发送的数据报文,如果为业务连接緩存了数据报文,则计算业务连接需要申请带宽。 Queries its current cache of various business connections waiting to send data packets, if the cache is connected to a data service message, the computing business connections need to apply for bandwidth.

所述带宽请求报文以带宽请求头的方式存在;所述带宽请求头进一步携带自身对应的业务类型的任一业务连接的CID。 The bandwidth request message is present in the bandwidth request header manner; head further carries the bandwidth request any service type of their own CID corresponding to a service connection.

其中,所述带宽请求报文以带宽请求头的方式存在,所述带宽请求头进一步携带当前SS的Basic CID或者任一业务连接的CID。 Wherein the bandwidth request message is present in the bandwidth request header manner, the Basic CID of bandwidth request header further carries any current or SS CID of a traffic connection.

其中,所述带宽请求头进一步采用自身的类型(Type)字段来指示自身对应的业务类型。 Wherein the bandwidth request header further employ its type (Type) field to indicate the service type corresponding to itself.

其中,所述带宽请求头进一步采用自身的Type字段来指示增量带宽请求或总量带宽请求。 Wherein the bandwidth request header further using its Type field to indicate the total amount of incremental bandwidth request or a bandwidth request.

其中,所述带宽请求报文以捎带方式存在,该带宽请求报文由携带所需带 Wherein the bandwidth request message is present in a piggyback manner, the bandwidth request message carried by a desired band

宽的带宽请求子头、和该带宽请求子头所附加的数据报文构成;所述带宽请求子头附加在自身对应的业务类型的任一数据报文中。 Wide data bandwidth request message subheader, the bandwidth request and additional sub-head configuration; the bandwidth request header appended to any sub-type of service corresponding to itself a data packet. 其中,所述带宽请求子头为授权管理子头。 Wherein the bandwidth request header as a sub-license management subheader.

其中,所述业务类型包括:rtPS、 nrtPS、和BE业务;所述带宽请求报文对应的业务类型为rtPS、或nrtPS、或BE业务。 Wherein the service type comprises: rtPS, nrtPS, and BE traffic; the bandwidth of the service type corresponding to the request packet to the rtPS, or nrtPS, or BE traffic.

因此,本发明所提供的WiMAX系统的带宽请求方法,在每一上行子帧里,最多只能发送个数为业务类型总数的带宽请求报文,比如:目前SS支持的需要申请带宽的业务类型总数有三个,则最多发送三个带宽请求报文, 从而显著减少带宽请求报文数量,使空口资源得以有效利用于业务数据的传输。 Accordingly, the WiMAX system bandwidth request method provided by the present invention, each uplink subframe, the number of transmitting a maximum of the total number of bandwidth request message service type, such as: SS current service type supported by the bandwidth required to apply the total number of three, a maximum of three transmission bandwidth request packets, thereby significantly reducing the number of the bandwidth request message packets, so that the air interface resources can be effectively utilized for the transmission of traffic data. 另外,由于带宽请求报文按业务类型进行发送,因此使BS按业务类型对带宽请求报文进行区别处理成为可能,进而能在节约空口资源的同时满足各类型业务的带宽分配要求。 Further, since the bandwidth request packets transmitted by business type, by business type BS so that the bandwidth request packet processing possible to distinguish between, and thus can meet the bandwidth allocation requirements for each type of traffic while saving air interface resources.

附图说明 BRIEF DESCRIPTION

图1为本发明方法一较佳实施例处理流程示意图; The method of the present invention, FIG. 1 one case a schematic process flow of the preferred embodiment;

图2为本发明方法采用的授权管理子头一实例的组成结构示意图。 The method of the present invention, FIG 2 using entitlement management subcomponents structural diagram of a first example.

具体实施方式 Detailed ways

下面结合附图及具体实施例对本发明再作进一步详细的说明。 Specific embodiments of the present disclosure will be described in further detail below in conjunction with the accompanying drawings and.

本发明提供了一种微波接入全球互通(WiMAX)系统的带宽请求方法, 其主要设计思想为:基于业务类型来构造带宽请求报文。 The present invention provides a worldwide interoperability for microwave access (WiMAX) system bandwidth request method, the main design are: based on traffic type bandwidth request message is configured. SS首先要分别计算每种业务类型的所需带宽,所述业务类型的所需带宽为该业务类型种所有业务连接所需带宽的总和;然后根据计算结果来分别为每种业务类型构造带宽请求报文,所构造的每种业务类型的带宽请求报文携带计算得到的该业务类型所需带宽的总和。 SS are calculated first required bandwidth for each type of service, type of service required bandwidth for the service type for all kinds of service connection the sum of the bandwidth required; and the calculation result for each service type respectively configured bandwidth request packets, each type of service constructed bandwidth request message carries the service type of the calculated total bandwidth required.

根据背景技术可知,SS支持的业务类型中,需要申请带宽的业务有三种:rtPS、 nrtPS、和BE业务,在同一带宽请求报文的发送周期内,每种业务类型下的所有业务连接将对应一个带宽请求报文,当此三种业务均有业务连接需要申请带宽时,所构造的带宽请求报文数量最多,为三个。 The background art known, SS supported service types, it is necessary to apply three operational bandwidth: rtPS, nrtPS, and BE traffic in the same transmission cycle the bandwidth request message, all the service connection in each service type corresponding to a bandwidth request message, when this three services need to apply the service connection has a bandwidth, the bandwidth request message constructed largest number is three. 显然,相对于为每个业务连接发送一个带宽请求报文的现有技术来说将大大减少带 Clearly, the prior art with respect to each service connection to send a bandwidth request message is significantly reduced with the

宽请求报文的空口资源占用率。 Wide requested air interface resource utilization messages.

图1为本发明方法一较佳实施例处理流程示意图。 Figure 1 is a process flow process of the invention one case of the preferred embodiment of FIG. 本实施例中,共有三种业务类型,包括:rtPS、 nrtPS、和BE业务。 rtPS, nrtPS, and BE traffic: embodiment, there are three types of service, including the present embodiment. 如图1所示,在预设的带宽请求报文发送周期内,具体处理包括: As illustrated, within a predetermined bandwidth request message transmission period, specifically a process comprising:

步骤101: SS查询自身当前緩存的各个业务连接等待发送的数据报文, 如果为某个业务连接緩存了数据报文,则说明该业务连接需要申请带宽,从而可以确定需要申请带宽的业务连接,再分别计算rtPS、 nrtPS、和BE业务的所需带宽,具体处理包括:查询所有需要申请带宽的rtPS的业务连接, 计算所有需要申请带宽的rtPS的业务连接所需带宽的总和;查询所有需要申请带宽的nrtPS的业务连接记录,计算所有需要申请带宽的nrtPS的业务连接所需带宽的总和;查询所有需要申请带宽的BE业务的业务连接记录, 计算所有需要申请带宽的BE业务的业务连接所需带宽的总和。 Step 101: SS query their current cache of various business connections waiting to send data packets, if the cache is connected to the data packet is a business, then the need to apply for service connection bandwidth, which can determine the bandwidth required to apply for service connection, and then calculate the required bandwidth rtPS, nrtPS, and BE traffic, the specific process comprising: a query for all applications required bandwidth of the rtPS connection service, sum of all the bandwidth required to apply rtPS traffic connection bandwidth required; all queries need to apply nrtPS recording bandwidth of a service connection, calculates the sum of all the need to apply nrtPS bandwidth required bandwidth traffic connection; Search BE traffic bandwidth applications requires service connection records, calculates the required connection bandwidth to apply all required service BE traffic total bandwidth.

其中,不一定每种类型的业务均有业务连接需要申请带宽,因此,本步 Wherein, for each type of traffic may not have the bandwidth required to apply the service connection, therefore, this step

骤中可能某些业务类型的没有业务连接需要申请带宽,甚至没有业务连接需要申请带宽,也就无需计算该业务类型的所需带宽或者计算任何业务类型的 Step in certain traffic types may not need to apply for the service connection bandwidth not even need to apply for the service connection bandwidth will not need to calculate the required bandwidth of the service type of service or any type of computing

所需带宽。 Required bandwidth. 本实施例设定:三种业务类型均有业务连接需要申请带宽。 The present embodiment is set: three service types are required to apply the service connection bandwidth.

这里,根据背景技术可知,ss能够计算得到每一业务连接所需申请的带宽值,因此本步骤,SS能够计算得到某一业务类型下所有业务连接所需带宽的总和。 Here, according to the background art it can be seen, ss bandwidth value can be calculated for each service connected to a desired application, so this step, SS can be calculated to obtain the sum of all of the service connection for a service type required bandwidth. 随着WiMAX系统的发展,SS所支持的业务类型也可能发生变化,因此本发明并不限定具体包括哪些业务类型。 With the development of the WiMAX system, SS supported service types may change, so the present invention is not limited to what comprises a service type.

步骤102:根据步骤101的计算结果,为每个业务类型分别构造带宽请求报文,所述每个业务类型的带宽请求报文中携带步骤101计算得到的该业务类型的所需带宽,具体处理包括:为所有rtPS的业务连接统一构造一个rtPS的带宽请求报文,所构造的rtPS的带宽请求报文携带步骤101计算得到的所有需要申请带宽的rtPS的业务连接所需带宽的总和;为所有nrtPS的业务连接统一构造一个nrtPS的带宽请求4艮文,所构造的nrtPS的带宽请求报文携带步骤101计算得到的所有需要申请带宽的nrtPS的业务连接所需带宽的总和;为所有BE业务的业务连接统一构造一个BE业务的带宽请求报文,所构造的BE业务的带宽请求报文携带计算得到的所有需要申请带宽的BE业务的业务连接所需带宽总和。 Step 102: According to the calculation result of step 101, the bandwidth request packets are configured for each service type, each service type of the bandwidth request required bandwidth for the service type is calculated in step 101 message carries, the specific processing comprising: a business unified structure connecting all of the rtPS a bandwidth request message is rtPS, rtPS constructed packet carries bandwidth request to apply for bandwidth for all traffic rtPS step 101 the sum of the calculated required bandwidth connection; all nrtPS unified service connection configured Gen bandwidth request message 4 of a nrtPS, nrtPS constructed packet carries bandwidth request to apply for bandwidth for all traffic nrtPS calculated in step 101 the sum of the bandwidth required connection; BE traffic of all a unified service connection configured BE traffic bandwidth request messages, bandwidth configuration of a BE service request packet to apply all required service BE traffic bandwidth calculated total bandwidth necessary for connection.

其中,本发明构造的带宽请求报文主要以两种方式存在: 一、带宽请求头方式,该带宽请求头中携带业务连接CID、以及所需带宽等信息,此种方式可以请求带宽增量,也可以请求带宽总量。 Wherein the bandwidth of the configuration of the present invention, the request packet exists in two main ways: First, the bandwidth request header embodiment, the header carries bandwidth request service connection the CID, and the required bandwidth information in this manner can request bandwidth increment, You may request the amount of bandwidth. 该带宽请求头为六字节,可利用带宽请求头中的19比特来携带所需带宽,利用带宽请求头中的2个字节来携带业务连接CID,并可使用带宽请求头里类型(Type) 字段中的1个比特位来指示是请求带宽总量还是请求带宽增量。 The bandwidth request header is six bytes, bandwidth utilization may be required to carry 19 bits of the bandwidth request header, a bandwidth request header using 2 bytes to carry the service connection the CID, the bandwidth request in advance and using the type (Type ) field one bit is used to indicate the amount of bandwidth request or the requested bandwidth increment.

其中,每个业务类型的带宽请求头携带的业务连接CID为该业务类型的任一业务连接CID,比如:rtPS共有6个业务连接并对应6个业务连接CID,则rtPS的带宽请求头中携带的CID为这6个业务连接CID中的任一业务连接CID。 Wherein each traffic type of bandwidth request header carries service CID for the service connection to any type of a service connection CID, for example: There are six rtPS corresponding to the service connection and the service connection 6 CID, the bandwidth request header rtPS carries the CID is a CID service connection 6 which is connected to any one service CID. 这样,BS根据带宽请求头携带的业务连接CID可知该带宽 Thus, BS according to the bandwidth of the service connection found CID header carries bandwidth request of

请求头来自哪个SS、以及该带宽请求头对应的业务类型。 Request header which SS, and the service type corresponding to the bandwidth request header from.

二、带宽请求子头方式,也称为捎带方式,由用于携带所需带宽的带宽请求子头和其所附加的数据报文来构成带宽请求报文。 Second, the bandwidth request header sub-mode, also called piggyback manner, the bandwidth required for the bandwidth request header and the sub-packets which it is attached is constituted by a bandwidth request message for carrying. 通常采用授权管理子头作为带宽请求子头,该授权管理子头为附加在数据报文中的两个字节,此种方式通常用来请求带宽增量,由于业务连接的数据报文中已包含业务连接 Entitlement Management subheader usually as a sub bandwidth request header, the authorization management subheader is appended to data packets in two bytes, this embodiment is generally used to request bandwidth increment, since the data packet service connection has been It includes service connection

的CID,因此,附加字节中无需携带任何CID,仅携带所需带宽即可。 Of the CID, therefore, you need not carry any additional bytes in the CID, the bandwidth required to carry only.

其中,每个业务类型的授权管理子头所附加的数据报文为该业务类型的 Wherein each traffic type of entitlement management subheader the appended data packets for the service type

任一数据报文,比如:nrtPS共有6个业务连接,且其中3个业务连接要发送数据报文,则nrtPS的授权管理子头可附加在nrtPS的3个业务连接要发送的任一数据报文中。 Any data packet, such as: nrtPS total of six service connection, and wherein the three traffic connection to send data packets, the nrtPS entitlement management subheader may be attached nrtPS 3 service connection to send any data packets the text. 这样,BS根据数据报文的业务连接CID能够确定是来自哪个SS的带宽请求、以及是哪种业务的带宽请求。 Thus, the BS the data packet service connection CID is able to determine which bandwidth request from the SS, and what kind of service is the bandwidth request.

上述两种存在方式的带宽请求报文,使BS能够根据带宽请求头或附加授权管理子头的数据报文的业务连接CID,确定带宽请求来自哪个SS,以及是哪个业务类型的带宽请求,这样方便BS等设备针对各种业务类型的带宽请求报文进行区别处理,关于BS等设备具体如何对各种业务类型的带宽请求报文进行区别处理,非本发明涉及的问题,本文不作进一步描述。 The existence of the two bandwidth request messages, so that the BS can request header according to the bandwidth or additional authorization management sub-header of the data packet service connection the CID, which determines the bandwidth request from the SS, and which type of bandwidth request service, so BS convenient equipment for each service type of bandwidth request packets processed differently, BS equipment on how each service type specific bandwidth request packets processed differently, the present invention is a non-issue, not be further described herein.

如果不考虑BS等设备对各种业务类型的带宽请求报文可能进行的区别处理,则带宽请求头中携带的CID以及授权管理子头所附加的数据报文将有所不同:当带宽请求报文采用带宽请求头的存在方式时,可携带当前SS 的Basic CID或任一业务连接CID,即可指明带宽请求头来自哪个SS;当带宽请求报文采用授权管理子头的存在方式时,可附加在当前SS任一业务连接的任一数据报文中。 BS without considering the types of other equipment of various services bandwidth request packet discriminating process possible, the bandwidth request header and carried CID authorization management subheader the appended data packet will be different: when a bandwidth request message Wen using bandwidth request header present embodiment, the current can carry any or Basic CID SS a service connection the CID, the bandwidth request header to indicate from which the SS; when a bandwidth request message using entitlement management subheader present embodiment can be in any additional SS current service connection according to any one of a data message. 此外,当带宽请求头中携带的是BasicCID或任一业务连接CID时,还可进一步利用带宽请求头中的Type字段剩余的2个比特位来指示业务类型。 Further, when the bandwidth request header is carried BasicCID or any traffic connection the CID, the bandwidth request header may further use the Type field in the remaining two bits to indicate the service type.

步骤103: SS将步骤102构造的各个带宽请求报文发送至BS, BS再按接收到的带宽请求报文为SS指配带宽。 Step 103: SS the respective bandwidths of step 102 is configured to send a request message BS, BS then the received packet is a bandwidth request SS assigned bandwidth. 后续处理非本发明解决的问题,本文不再继续描述。 Subsequent processing of the present invention is a non-problem, no further described herein. 下面结合图2对采用带宽请求头作为带宽请求报文时,带宽请求头内部的组成结构加以详细说明。 Below in connection with FIG. 2 using the bandwidth request header as a bandwidth request message, be described in detail inside the bandwidth request header composition structure. 图2为本发明方法采用的带宽请求头一实例的组成结构示意图。 A structure diagram of a first example of FIG. 2 is a bandwidth request process of the invention employed.

图2中,将带宽请求头的六个字节从上到下、从左到右分三行来表示, 2, six bytes of bandwidth request header from top to bottom, from left to right to indicate three lines,

每行包括两个字节共16个比特。 Each row comprises two bytes of 16 bits. 最上面一行中,从左至右依次包括:1个比特的头类型(HT)字段,该HT字段必须被置为1, l个比特的一直被置为零的EC字段,3个比特的类型(Type)字段,ll个比特的带宽请求最高有效位(BR MSB)字段,该BRMSB字段为所需带宽值的高8位。 The top row, from left to right comprising: a bit header type (HT) field, the HT field must be set to 1, has the EC field is set to zero bits l, 3-bit type (Type) field, ll bits of the most significant bit of the bandwidth request (BR MSB) field, the field is BRMSB desired high bandwidth value eight. 中间一行中,从左至右依次包括:8个比特的带宽请求最低有效位(BRLSB)字段, 该BR LSB字段为所需带宽值的低8位,8个比特的连接标识符最高有效位(CIDMSB)字段,该CIDMSB字段为CID的高8位。 Middle row, from left to right comprising: eight bits of the least significant bit of the bandwidth request (BRLSB) field, the BR LSB field is the lower eight bits of the desired bandwidth value, a connection identifier most significant bit of the 8 bits ( CIDMSB) field, the field is high CIDMSB 8-bit CID. 最下面一行中,从左至右依次包括:8个比特的连接标识符最低有效位(CID LSB)字段,该CID LSB字段为CID的低8位,8个比特的头校验序列(HCS )字段。 Bottom row, from left to right comprising: a connection identifier 8-bit least significant bits (the LSB CID) field, the LSB of the CID field to the lower 8 bits of CID, header check sequence of 8 bits (HCS) field. 其中, HT字段、EC字段、和HCS字段与现有协议一致,各字段指示的含义与本发明处理无关,因此不再描述。 Wherein, the HT field, EC field, and a HCS field consistent with the existing protocol, the meaning of each field indicated by independent treatment of the invention, and therefore will not be described.

在使用带宽请求头作为带宽请求报文的存在方式时,利用Type字段中的1个比特位来指示是增量带宽请求还是总量带宽请求,利用其中的BR MSB字段和BRLSB字段共19个比特的字段来携带所需带宽值,利用其中的CID MSB字段和CID LSB字段共16个比特的字段来携带业务连接CID 或Basic CID。 When using a bandwidth request header as a bandwidth request message is present embodiment, the use of a bit Type field is used to indicate an incremental bandwidth request or a bandwidth request amount by which the BR MSB field and a field of 19 bits BRLSB the fields carrying the desired bandwidth value by which the CID field of the MSB and the LSB field CID 16 bits CID field to carry the service connection or Basic CID. 当所携带的为SS的Basic CID或SS的任一业务连接CID时, 还可进一步利用Type字段中剩余的2个比特位来指示当前带宽请求头对应的业务类型,比如:可用00指示rtPS,用01指示nrtPS,用IO指示BE业务,但本发明并不限定具体各业务类型对应的比特值。 When the Basic CID or SS is carried to the SS according to any one service connection the CID, may further use the Type field in the remaining two bits indicate the current bandwidth request service type header corresponding to, for example: Available 00 indicates the rtPS, with 01 indicates nrtPS, BE traffic indicated by IO, however, the present invention is not limited to particular bit values ​​corresponding to each service type.

综上所述,本发明方法将带宽请求报文按业务类型来构造和发送,使同一上行子帧内发送的带宽请求报文数量相对现有技术大大减少,并且,本方法不仅能减少带宽请求报文对空口资源的占用,还使BS在分配带宽资源时得以依据业务类型进行区别处理,因此,本发明在节约空口资源、保证业务 In summary, the method of the present invention, a bandwidth request packet constructed by the service type and transmit the same uplink subframe transmitted packet bandwidth request quantity is greatly reduced relative to the prior art, and the present method can not only reduce the bandwidth request packet occupancy of air interface resources, but also for the BS to distinguish between processed according to the service type in the allocation of bandwidth resources, therefore, the present invention saves air interface resources, ensure the service

数据传输质量的同时,还为满足各业务类型的带宽分配要求提供了基础。 Data transmission quality while also providing the basis for various traffic types satisfy bandwidth allocation requirements.

以上所述仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。 The above are only preferred embodiments of the present invention but are not intended to limit the scope of the present invention. 凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等,均包含在本发明的保护范围内。 Any modifications within the spirit and principle of the present invention, equivalent substitutions, improvements, etc., are included within the scope of the present invention.

Claims (9)

1、一种微波接入全球互通WiMAX系统的带宽请求方法,其特征在于,该方法包括: A.用户站SS分别计算每种业务类型的所需带宽,所述业务类型的所需带宽为该业务类型中所有业务连接所需带宽的总和;为每种业务类型分别构造一个带宽请求报文;所构造的每种业务类型的带宽请求报文携带计算得到的该业务类型所需带宽; B.SS将步骤A所构造的带宽请求报文发送至基站BS。 A bandwidth request method for Microwave Access WiMAX worldwide interoperability system, characterized in that, the method comprising: A. a subscriber station SS calculates a required bandwidth for each traffic type, bandwidth required for the service type traffic service type connector sum of all the bandwidth required; a configured service type for each bandwidth request message, respectively; the configuration of each type of service required bandwidth request message carries the service type of bandwidth calculated; B. SS constructed step a bandwidth request message to the base station BS.
2、 根据权利要求1所述的方法,其特征在于,所述用户站SS分别计算每种业务类型的所需带宽包括,用户站ss查询自身当前緩存的各个业务连接等待发送的数据报文,如果为业务连接緩存了数据报文,则计算业务连接需要申请带宽。 2. The method according to claim 1, wherein said user station SS calculates a required bandwidth for each traffic type includes the user's own query ss station of each service connection currently cached data packets waiting to be sent, If a service connection caches data packets, the computing business connections need to apply for bandwidth.
3、 根据权利要求l所述的方法,其特征在于,所述带宽请求报文以带宽请求头的方式存在;所述带宽请求头进一步携带自身对应的业务类型的任一业务连接的连接标识符CID。 3. The method as claimed in claim l, wherein said bandwidth manner there is a request packet bandwidth request header; head further carries the bandwidth request any service type of connection identifiers corresponding to a self-service connection CID.
4、 根据权利要求1所述的方法,其特征在于,所述带宽请求报文以带宽请求头的方式存在,所述带宽请求头进一步携带当前SS的基本Basic CID或者任一业务连接的CID。 4. The method of claim 1, wherein said bandwidth manner there is a request packet bandwidth request header, a bandwidth request header further carries current Basic CID SS basic CID or any of a traffic connection.
5、 根据权利要求4所述的方法,其特征在于,所述带宽请求头进一步采用自身的类型Type字段来指示自身对应的业务类型。 5. The method as claimed in claim 4, wherein the bandwidth request header further employ its own type Type field to indicate the type of the corresponding service.
6、 根据权利要求2至5任一项所述的方法,其特征在于,所述带宽请求头进一步采用自身的Type字段来指示增量带宽请求或总量带宽请求。 6. A method as claimed in any one of claims 2-5, characterized in that the bandwidth request header further using its Type field to indicate the total amount of incremental bandwidth request or a bandwidth request.
7、 根据权利要求1所述的方法,其特征在于,所述带宽请求报文以捎带方式存在,该带宽请求报文由携带所需带宽的带宽请求子头、和该带宽请求子头所附加的数据报文构成;所述带宽请求子头附加在自身对应的业务类型的任一数据报文中。 7. The method of claim 1, wherein the bandwidth request message is present in a piggyback manner, the bandwidth request message carrying the desired bandwidth of the bandwidth request subheader, the bandwidth request and the appended subheader the configuration data packet; the bandwidth request header attachment in any sub-type of service corresponding to itself a data packet.
8、 根据权利要求7所述的方法,其特征在于,所述带宽请求子头为授权管理子头。 8. The method of claim 7, wherein the bandwidth request header as a sub-license management subheader.
9、 根据权利要求l、 2、 3、 4、 5或7所述的方法,其特征在于,所述业务类型包括:实时轮询业务rtPS、非实时轮询业务nrtPS、和尽力而为BE业务; 所述带宽请求报文对应的业务类型为rtPS、或nrtPS、或BE业务。 9, according to claim l, 2, Method 3, 4, 5 or 7, wherein the service types include: real-time polling service the rtPS, nrtPS non-real-time polling service, and best effort BE traffic ; service type corresponding to the bandwidth request packet is rtPS, or nrtPS, or BE traffic.
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