CN102710379B - Mac实体和在mac实体中处理数据的方法 - Google Patents
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Abstract
本发明提供一种在无线发射/接收单元(WTRU)中的介质接入控制(MAC)实体、一种节点B中用于与WTRU通信的介质接入控制(MAC)实体、一种无线电网络控制器(RNC)中与节点B通信的介质接入控制(MAC)实体、一种用于在WTRU中在介质接入控制(MAC)实体中处理数据的方法、及一种用于在节点B中在介质接入控制(MAC)实体中处理数据的方法。所述MAC实体包括:用于在WTRU具有能用于传输的上行链路数据的情况下经由上行链路信道传送对无线电资源的请求的装置;用于响应于对无线电资源的请求而接收核准信息的装置;用于选择数据的传输格式组合(TFC)的TFC选择装置;以及用于响应于传输反馈而重传所述数据的混合自动重复请求(H-ARQ)装置。
Description
本申请是申请号为200580014391.1、申请日为2005年4月29日、名称为“支持增强上链的媒体存取控制层架构”的中国发明专利申请的分案申请。
技术领域
本发明涉及包含无线发射/接收单元(WTRU)及节点B的无线通信***。更特别地,本发明涉及无线通信***中支持增强型上行链路(EU)的介质接入控制(MAC)层架构及功能。
背景技术
用于改善上行链路覆盖、吞吐量及传输延迟的方法目前被检视于第三代伙伴计划(3GPP)的版本6(R6)中。为了成功执行这些方法,上行链路物理资源的调度及分配已经从无线电网络控制器(RNC)被移至节点B,使得即使无线电网络控制器保持全部控制,节点B亦可以短期基础相比于无线电网络控制器做出更有效决定及管理上行链路无线电资源。
一个或更多的独立上行链路传输在共享时间区段内在WTRU及通用移动电信***(UMTS)陆上无线电接入网络(UTRAN)间的增强型专用信道(E-DCH)上被处理。其中一个示例为介质接入控制(MAC)层混合自动重复请求(HARQ)或仅介质接入控制层自动重复请求(ARQ)操作,其中各传输可以要求不同数量的重传输以被通用陆上接入网络成功接收。
发明内容
本发涉及一种改良的支持增强型上行链路的介质接入控制层架构及功能。被称为MAC-e实体的增强型上行链路的新介质接入控制实体是被定义及并入WTRU、节点B及无线电网络控制器。无线发射/接收单元用于增强型上行链路的介质接入控制实体处理混合自动重复请求传输及重传输、优先级处理,用于增强型上行链路的介质接入控制实体多路复用及传输格式组合(TFC)选择。节点B用于增强型上行链路的介质接入控制实体处理混合自动重复请求传输及重传输、增强型专用信道调度及用于增强型上行链路的介质接入控制实体解多路复用(demultiplex)。无线电网络控制器用于增强型上行链路的介质接入控制实体提供序列中传递及处理来自不同节点B的数据组合。
无线发射/接收单元用于增强型上行链路的介质接入控制实体包含增强型上行链路速率请求/分配实体、优先级处理实体、传输格式组合选择实体及混合自动重复请求实体。增强型上行链路速率请求/分配实体传送速率请求至节点B,以便经由增强型专用信道来传送数据及处理被接收自节点B的速率核准。优先级处理实体依据要被传送的数据的优先级来管理数据分配及混合自动重复请求过程。传输格式组合选择实体为这些数据选择传输格式组合。混合自动重复请求实体依据来自节点B的传输反馈来重传送数据。节点B用于增强型上行链路的介质接入控制实体包含调度器、解多路复用器(demultiplexer)及混合自动重复请求实体。
附图说明
可从以下较佳实施例说明及附图更详细理解本发明,其中:
图1是依据本发明的无线通信***的框图;
图2是依据本发明的WTRU的协议架构的框图;
图3是依据本发明的WTRU中的用于增强型上行链路的介质接入控制实体架构的框图;
图4是依据本发明的节点B中的用于增强型上行链路的介质接入控制实体架构的框图;及
图5是依据本发明的WTRU及节点B的用于增强型上行链路的介质接入控制实体架构及WTRU及节点B间的信号发送过程的框图。
具体实施方式
此后,术语“WTRU”包含但不受限于用户设备、移动台、固定或移动用户单元、寻呼器或可运作于无线环境中的任何其它类型装置。此后术语“节点B”包含但不受限于基站、地址控制器、接入点或无线环境中的其它类型接口装置。
本发明的特性可被并入集成电路(IC)或被配置于包含大量互连组件的电路中。
图1是依据本发明的无线通信***10的方块图。***10包含WTRU100、节点B200及无线电网络控制器300。无线电网络控制器300通过配置用于节点B200及WTRU100的增强型上行链路参数,如起始传输功率水平、最大允许的增强型上行链路传输功率或每个节点B的可用信道资源来控制全部增强型上行链路操作。WTRU100及节点B200之间,增强型专用信道102是被建立来支持增强型上行链路传输。
对于E-DCH传输,WTRU100经由ULEU信令信道104来传送速率请求至节点B200。为了回应,节点B200经由下行链路(DL)增强行上行链路信令信道106来传送速率核准至WTRU100。增强型上行链路无线电资源被分配给WTRU100,该WTRU100经由增强型专用信道102传送增强型专用信道数据。响应增强型专用信道传输,节点B经由DLEU信令信道106来传送肯定应答(ACK)或否定应答(NACK)以用于混合自动重复请求操作。节点B200亦可以用速率核准来响应WTRU100,以响应增强型专用信道数据传输。
图2是依据本发明的增强型专用信道102的协议架构方块图。被称为MAC-e实体的增强型上行链路的新介质接入控制实体被创造于WTRU100中,节点B200及无线电网络控制器300处理有关增强型专用信道传输及接收的所有功能。增强型上行链路的介质接入控制实体120被并入专用信道介质接入控制实体130及物理层(PHY)实体110间的WTRU100。WTRU100中的增强型上行链路的介质接入控制实体120处理混合自动重复请求传输及重传输、优先级处理、增强型上行链路的介质接入控制实体多路复用及传输格式组合选择。增强型上行链路的介质接入控制实体220被并入处理混合自动重复请求传输及重传输、增强型专用信道调度及用于增强型上行链路的介质接入控制实体解多路复用的节点B200。用于增强型上行链路的介质接入控制实体320被并入无线电网络控制器300以提供序列中传递及处理来自不同节点B的数据组合。
图3是依据本发明的WTRU100中的用于增强型上行链路的介质接入控制实体120的架构方块图。无线发射/接收单元用于增强型上行链路的介质接入控制实体120包含增强型上行链路请求/分配实体122、一优先级处理实体124、传输格式组合选择实体126及混合自动重复请求实体128。应注意图3被提供为本发明较佳实施例,而图3所示实体可被并入共轨介质接入控制功能实体中,且该功能基本上可通过功能实体来实施。
当WTRU100具有等待经由增强型专用信道102传送的增强型专用信道数据时,增强型上行链路速率请求/分配实体122负责请求来自节点B200的无线电资源。增强型上行链路速率请求可为业务量指示符、被请求数据速率、传输格式组合指数及各数据流的业务量测量(TVM)量中的其中之一。该速率请求可经由物理层或介质接入控制层信号发送而被传送至节点B200。速率请求以无线电链路控制(RLC)数据业务量测量为基础而产生。业务量测量可包含用于增强型专用信道传输的数据业务量,或选择性地进一步包含等待以主动混合自动重复请求过程进行重传输的数据。
当WTRU100接收来自节点B200(WTRU可接收来自一个以上节点B的速率核准)的速率核准(也就是速率及/或时间调度)时,增强型上行链路速率请求/分配实体122通知优先级处理实体124资源可用于传送数据。接收到的速率核准决定增强型专用信道传输格式组合组(TFCS)子集,及/或开始时间,及持续时间(可选)。
通过传送速率请求,WTRU100可请求节点B200改变传输格式组合组内的允许上行链路传输格式组合组,而节点B200可通过传送速率核准来改变传输格式组合组内的允许上行链路传输格式组合。WTRU100可传送调度信息更新至节点B200来提供缓冲区占用及/或可用传输功率信息,使节点B200中的调度实体222可决定适当传输格式组合组指示符及传输时间区间。为了持续控制快速调度,节点B200可传送代表***可容许干扰的参数,并避免速率控制模式中的WTRU引进额外干扰。一种实现方式是使节点B200发送WTRU100可用于速率核准中的增强型上行链路传输的被允许传输功率。
优先级处理实体124可依据数据优先级来管理数据流分配及混合自动重复请求过程。新传输或重传输以来自相关下行链路增强型上行链路信号发送的传输反馈为基础被决定。再者,各介质接入控制协议数据单元(PDU)的队列识别(ID)及传输序号(TSN)被决定。传输序号对增强型专用信道内的各优先等级是唯一,且针对各新数据块被增加。可选择是,优先级处理实体124可先行重传输较低优先级数据。较高优先级数据可于任何时间取代较低优先级数据未决定重传输而被启动。
传输格式组合选择实体126依据在速率核准中发送的信息来为要在增强型专用信道102上传送的数据选择传输格式组合,并将多个专用信道介质接入控制流多路复用至用于增强型上行链路的介质接入控制实体协议数据单元中。速率核准可为绝对核准或相对核准。绝对核准提供WTRU可使用的最大上行链路资源量的绝对限制。相对核准与先前被使用的值相较而增加或减少资源限制。
传输格式组合选择受制于最大允许传输功率,及被来自节点B200的速率核准所允许的对应传输格式组合组子集。传输格式组合选择以逻辑信道优先级为基础,使该传输格式组合选择得以最大化较高优先级数据的传输。通过无线电网络控制器配置的用于增强型上行链路的介质接入控制实体协议数据单元中的专用信道介质接入控制流的允许组合在选择传输格式组合时也得到考虑。
混合自动重复请求实体128处理混合自动重复请求协议所需的所有任务。混合自动重复请求实体128负责储存用于增强型上行链路的介质接入控制实体净荷并于失败传输例中重传输它们。混合自动重复请求实体128可支持混合自动重复请求协议的多个实例(混合自动重复请求过程)。被配置于WTRU100处的增强型上行链路可能具有一个以上混合自动重复请求过程。
依据本发明,同步混合自动重复请求是较佳被实施。因此,混合自动重复请求操作以同步下行链路肯定应答和否定应答及上行链路中的同步重传输为基础。
图4是依据本发明的节点B200中的用于增强型上行链路的介质接入控制实体220的架构方块图。节点B用于增强型上行链路的介质接入控制实体220包含一调度器222、一解多路复用器224及一混合自动重复请求实体226。节点B中,一用于增强型上行链路的介质接入控制实体220较佳被提供给各WTRU,而调度器优选被提供给各小区。调度器222是管理WTRU间的增强型专用信道小区资源。
调度器222管理WTRU及混合自动重复请求过程间的增强型专用信道资源。以来自WTRU100的速率请求为基础,调度器222经由下行链路增强型上行链路信令信道106产生速率核准并传送它们至WTRU。速率核准提供决定WTRU100可从中进行选择的传输格式组合组的信息,及标示WTRU被允许用于增强型专用信道传输的最大资源。调度器222控制对应增强型上行链路信令信道上的速率请求接收及速率核准传输。可替代是,独立控制实体(无图标)可被提供于节点B用于增强型上行链路的介质接入控制实体220来接收速率请求及传输速率核准,而调度器222可被提供自节点B用于增强型上行链路的介质接入控制实体220。
解多路复用器224将用于增强型上行链路的介质接入控制实体协议数据单元解多路复用为专用信道介质接入控制协议数据单元。增强型专用信道介质接入控制流到用于增强型上行链路的介质接入控制实体协议数据单元的多路复用在WTRU100中得到支持。多个增强型专用信道介质接入控制流可被配置给一个WTRU且可被多路复用于同一用于增强型上行链路的介质接入控制实体协议数据单元。可被多路复用于一个用于增强型上行链路的介质接入控制实体协议数据单元中的增强型专用信道介质接入控制流的组合通过无线电网络控制器300来配置。被多路复用的用于增强型上行链路的介质接入控制实体协议数据单元被解多路复用器224解多路复用为增强型专用信道介质接入控制流。节点B解多路复用可产生增强型专用信道介质接入控制或无线电链路控制协议数据单元重排序,而用于增强型上行链路的介质接入控制实体协议数据单元重排序可通过无线电网络控制器300来执行。
重排序可被执行于混合自动重复请求过程数已知的节点B增强型上行链路的介质接入控制实体或无线电网络控制器增强型上行链路的介质接入控制实体中。返回参考图2,无线电网络控制器增强型上行链路的介质接入控制实体320包含可依据接收到的传输序号来重排序接收到的增强型上行链路的介质接入控制实体协议数据单元的重排序实体。具有连续传输序号的增强型上行链路的介质接入控制实体协议数据单元被传递至分解功能,而具有遗失较低传输序号的协议数据单元不被传递至分解功能。该分解功能于传送用于增强型上行链路的介质接入控制实体标头至较高层之前将其移除。无线电网络控制器300包含可重排序具有不同优先等级的协议数据单元的多个重排序队列。
重排序被执行于无线电网络控制器用于增强型上行链路的介质接入控制实体的实例中,节点B200传送具有被成功译码数据的混合自动重复请求过程数至无线电网络控制器300。混合自动重复请求过程亦可通过被传送至无线电网络控制器的节点B处接收时间隐约得知。混合自动重复请求过程数可被隐含获取自***帧数(SFN)或连接帧数(CFN),并得知WTRU100中的混合自动重复请求过程分配计划。
混合自动重复请求实体226产生标示增强型专用信道传输传递状态的肯定应答和否定应答。混合自动重复请求实体可支持停止及等待混合自动重复请求协议的多个实例。
图5是依据本发明的WTRU100及节点B200的用于增强型上行链路的介质接入控制实体架构及WTRU100及节点B200间的信号发送过程的方块图。于步骤502,当无线发射/接收单元用于增强型上行链路的介质接入控制实体120经由增强型专用信道102接收来自将被传送的WTRU无线电链路控制层140的数据时,增强型上行链路请求/分配实体122传送速率请求至节点B200(步骤504)。节点B200用速率核准进行响应(步骤506)。接收速率核准时,增强型上行链路请求/分配实体122通知优先级处理实体124无线电资源可用于传输数据(步骤508)。优先级处理实体124接着多路复用数据并依据数据优先级来分配混合自动重复请求过程,而数据的传输格式组合通过传输格式组合选择实体来选择(步骤510,512)。数据经由增强型专用信道102以该被分配混合自动重复请求过程传送(步骤514)。节点B200经由下行链路增强型上行链路信令信道106来传送反馈信号(步骤516)。若该反馈为否定应答,则数据可自行被重传输(步骤518),或可于另一速率核准被接收之后被重传输(步骤520)。
虽然本发明特性及组件已被说明于特定组合中的较佳实施例中,但各特色或组件均可被单独使用,或具有或无本发明其它特色及组件的各种组合中。
虽然本发明已以较佳实施例作说明,但熟练技术人士将了解被描述于以下本申请权利要求范围的本发明范围内其它变异。
Claims (15)
1.一种无线发射/接收单元WTRU,该WTRU中的增强型上行链路的介质接入控制MAC-e实体包括:
用于在所述WTRU具有能用于传输的上行链路数据的情况下传送对无线电资源的请求的第一装置;
用于接收响应于对无线电资源的请求的核准信息的第二装置;
用于将来自至少一个针对专用信道的介质接入控制MAC-d流的数据多路复用到MAC-e协议数据单元PDU以及用于至少基于核准信息、最大允许传输功率、以及逻辑信道优先级选择针对所述MAC-ePDU的传输的传输格式组合TFC的第三装置;以及
用于使用混合自动重复请求H-ARQ进程在增强型上行链路信道上传送所述MAC-ePDU的第四装置。
2.根据权利要求1所述的WTRU,其中,所述对无线电资源的请求至少包括业务量指示符、所请求的数据速率、TFC索引、或者数据流的业务量测量。
3.根据权利要求1所述的WTRU,其中,所述对无线电资源的请求经由下述之一传送:
物理层信令;或者
介质接入控制层信令。
4.根据权利要求1所述的WTRU,其中,所述对无线电资源的请求基于无线电链路控制RLC数据业务量。
5.根据权利要求1所述的WTRU,其中,所述第四装置被配置成同步混合自动重复请求H-ARQ操作,其中混合自动重复请求操作是基于来自节点B的同步下行链路肯定应答ACK和否定应答NACK以及所述WTRU在上行链路UL中同步重传的。
6.根据权利要求1所述的WTRU,其中,所述核准信息是下述其中之一:
绝对核准,该绝对核准提供所述WTRU能够使用的最大上行链路资源量的绝对限制;或者
相对核准,该相对核准指定上行链路资源的当前量被增加或被减少的量。
7.根据权利要求1所述的WTRU,其中,所述第四装置被配置成用于支持多个H-ARQ进程。
8.根据权利要求1所述的WTRU,其中,所述增强型上行链路信道是增强型专用信道(E-DCH)。
9.一种用于与无线发射/接收单元WTRU通信的节点B,该节点B中的增强型上行链路的介质接入控制MAC-e实体包括:
用于接收来自所述WTRU的对无线电资源的请求以及用于响应于来自所述WTRU的对无线电资源的请求而向所述WTRU传送核准信息的装置;
用于接收来自所述WTRU的增强型上行链路传输以及用于对来自接收到的增强型上行链路传输的介质接入控制MAC协议数据单元PDU进行解多路复用的装置;以及
用于响应于来自所述WTRU的增强型上行链路传输而传送肯定应答ACK或否定应答NACK的装置。
10.根据权利要求9所述的节点B,其中,所述解多路复用的装置导致下述中的至少其中之一:
专用信道MACMAC-dPDU重排序;或者
无线电链路控制RLCPDU重排序。
11.根据权利要求9所述的节点B,其中,在所述节点B中提供针对与所述节点B相关联的每个WTRU的一个MAC-e实体。
12.一种用于在无线发射/接收单元WTRU的增强型上行链路的介质接入控制MAC-e实体中处理数据的方法,该方法包括:
传送用于增强型上行链路EU数据的传输的对无线电资源的请求;
接收核准信息;
将来自至少一个针对专用信道的介质接入控制MAC-d流的数据多路复用到针对增强型上行链路的介质接入控制MAC-e协议数据单元PDU;
至少基于核准信息、最大允许传输功率、以及逻辑信道优先级选择针对传送所述MAC-ePDU的传输格式组合TFC;以及
使用混合自动重复请求H-ARQ进程在EU信道上传送所述MAC-ePDU。
13.根据权利要求12所述的方法,其中,所述EU信道是增强型专用信道E-DCH。
14.一种用于在节点B的增强型上行链路的介质接入控制MAC-e实体中处理数据的方法,该方法包括:
接收来自无线发射/接收单元WTRU的对无线电资源的请求;
对来自所述WTRU的上行链路传输进行调度;
向所述WTRU传送上行链路调度核准;
接收来自所述WTRU的增强型上行链路传输;以及
向所述WTRU传送用于上行链路传输的混合自动重复请求H-ARQ反馈。
15.根据权利要求14所述的方法,其中,该方法还包括:
向无线电网络控制器RNC传送用于重排序的被正确解码的数据;
向所述RNC传送解码数据的H-ARQ进程号;以及
从***帧号或连接帧号中获得所述解码数据的H-ARQ进程号。
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