CN102948205A - 用于在无线网络中发起通信的技术 - Google Patents
用于在无线网络中发起通信的技术 Download PDFInfo
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Abstract
描述了用于请求尽力(BE)类别业务的新服务流以便给新服务流分配优先级的装置的技术。例如,媒体访问控制(MAC)消息中的业务优先级参数可以用来传输新BE类别服务流的优先等级。MAC消息可以是AAIDAS-REQ消息(在IEEE802.16m草案9(2010)中规定)。基站或者移动台可以使用MAC消息来请求新服务流。
Description
技术领域
本文公开的主题通常涉及用于按优先序排列用于传输的业务的技术。
背景技术
在联网中业务的优先化是重要特征。在一些情况下,优先化允许时间和延迟敏感的分组更快速地通过网络。例如,针对用户站对于上行链路内容传输和基站对于下行链路内容传输的不同应用要求,IEEE 802.16-2009 在6.3.5节描述了五个不同的服务质量(QoS)调度优先级。IEEE 802.16-2009描述了扩展实时轮询业务(ertPS)用于语音通信和尽力(BE)分类用于数据通信。在IEEE 802.16-2009的6.3.5.2.4节中描述了BE。例如,各种因特网连接被分配BE分类:HTTP、FTP、以及基于IP的语音传输(VoIP)。与使用BE连接传输的语音相比,给予通过ertPS传输的语音更高的优先级。BE分类还用于更少时间和延迟敏感的业务,例如HTTP和FTP。
因此,延迟和丢失敏感的VoIP呼叫将不接收比不是延迟和丢失敏感的FTP通信更高的优先级。当网络被加载时,VoIP业务会因为它的BE流分类而遭受无法接受的延迟。
附图说明
在附图中以举例的方式而不是以限制的方式示出了本发明的实施例并且其中相似的附图标记指类似的元件。
图1描绘了使用无线网络连接的装置的示例。
图2描绘了基站请求与移动台的新服务流的方式。
图3描绘了移动台发起与基站的新服务流的方式。
图4描绘了根据实施例的移动台可以使用的系统。
图5描绘了根据实施例的基站可以使用的系统。
图6示出了随时间的示例下行链路突发(burst)使用,其中下行链路FTP使用和语音使用两者同时发生。
图7示出了随时间的语音通信的平均判分法(MOS)值。
图8提供了根据实施例的系统的示例。
图9描绘了根据实施例的过程。
具体实施方式
整个说明书提及“一个实施例”或“实施例”意味着连同实施例描述的特定特征、结构或特性包括在本发明的至少一个实施例中。因此,短语“在一个实施例中”或“实施例”在整个发明书的各个地方出现不一定全都指相同的实施例。此外,可以在一个或多个实施例中组合特定的特征、结构、或特性。
本发明的实施例可以在多种应用中使用。本发明的一些实施例可以与各种装置和系统一起使用,例如,发射机、接收机、收发机、发射机-接收机、无线通信站、无线通信装置、无线接入点(AP)、调制解调器、无线调制解调器、个人计算机(PC)、台式计算机、移动计算机、膝上型计算机、笔记本式计算机、平板电脑、服务器计算机、手持式计算机、手持式装置、个人数字助理(PDA)装置、手持式PDA装置、网络、无线网络、局域网(LAN)、无线LAN(WLAN)、城域网(MAN)、无线MAN(WMAN)、广域网(WAN)、无线WAN(WWAN)、依照现有IEEE 802.11、802.11a、802.11b、802.11e、802.11g、802.11 h、802.11i、802.11n、802.16、802.16d、802.16e、802.16m、3GPP标准、3GPP LTE高级36211版本10的物理层描述、和/或上述标准的未来版本和/或衍生物和/或长期演进(LTE)运行的装置和/或网络、个人局域网(PAN)、无线PAN(WPAN)、作为上述WLAN和/或PAN和/或WPAN网络的一部分的单元和/或装置、单向和/或双向无线电通信系统、蜂窝式无线电话通信系统、蜂窝式电话、无线电话、个人通信系统(PCS)装置、结合无线通信装置的PDA装置、多输入多输出(MIMO)收发机或装置、单输入多输出(SIMO)收发机或装置、多输入单输出(MISO)收发机或装置、多接收机链(MRC)收发机或装置、具有“智能天线”技术或多天线技术的收发机或装置等等。
本发明的一些实施例可以与一种或多种类型的无线通信信号和/或系统一起使用,例如,射频(RF)、红外线(IR)、频分复用(FDM)、正交FDM(OFDM)、正交频分多址(OFDMA)、时分复用(TDM)、时分多址(TDMA)、扩展TDMA(E-TDMA)、通用分组无线业务(GPRS)、扩展GPRS、码分多址(CDMA)、宽带CDMA(WCDMA)、CDMA 2000、多载波调制(MDM)、离散多音(DMT)、蓝牙(RTM)、ZigBee(TM)等等。本发明的实施例可以在各种其他设备、装置、系统和/或网络中使用。
各种实施例为请求BE分类业务的新服务流的装置提供了方式以便将优先级分配给新服务流。例如,媒体访问控制(MAC)消息中的业务优先级参数可以用来传输用于新BE分类服务流的优先等级。MAC消息可以是AAI DSA-REQ消息(在IEEE 802.16m草案9(2010)中规定)。可以在MAC消息中将业务优先级或者从基站传输到移动台或者从移动台传输到基站。
对于下行链路通信,首先调度最高优先级分组用于传输。如果有剩余资源,则可以调度更低的优先级分组用于传输。对于上行链路通信,移动台为每个流产生带宽请求并且包括用于流的优先级信息。基站可以在更低的优先级带宽请求之前准许最高优先级带宽请求。
图1描绘了使用无线网络连接的装置的示例。该网络可以与任何种类的IEEE 802.16或3GPP LTE以及它们的变型和修订版兼容。在下游或下行链路的情况下,上述的一般命名的发射机102和/或202可以可互换地称作基站(BS)或增强型节点B(eNB)或接入点(AP)。在这个下行链路的情况下,上述的接收机104和/或204可以可互换地称为移动台(MS)或用户站(SS)或用户设备(UE)或本文中系统级的站(STA)。此外,取决于正在使用哪个无线协议,术语BS、eNB和AP在概念上可以互换,因此本文中提及BS也可以被看作提及eNB或AP中的任一个。类似地,本文中提及MS或SS也可以被看作提及UE或STA中的任一个。
图2描绘了BS请求与移动台的新服务流的方式。当BS中的调度器接收到没有基于分组的源/目的地端口和源/目的地IP地址被分配给任何服务流的分组时,该调度器可以确定属于BE类的服务流的优先级。BS中的调度器为新服务流确定优先级并且请求BS的媒体访问控制器将MAC消息发送到特定MS以发起新BE服务流。未分配的源和目的地端口以及未分配的源和目的地IP地址可以是BS中当前未分派的源和目的地端口以及源和目的地IP地址。MAC消息可以是DSA请求。DSA请求将请求新下行链路服务流。接收到的分组可以与新服务流相关联。流可以是BS和MS之间的唯一连接。
当BS发起新服务流的增加时,BS为每个数据流或BE流分配优先级。可以使用各种技术来为新服务流确定业务优先级。在一些情况下,BS基于等待时间值、误码率(BER)和分组差错率(PER)中的一个或多个来确定优先等级。请求服务流的应用可以为服务流指定等待时间值和PER。可以基于分组大小和PER来确定BER。在一些情况下,每个分组具有100比特。在一些情况下,BS的调度器为最低等待时间服务流分配最高优先级并且忽略BER/PER。然而,如果没有等待时间要求,则调度器可以把最高优先级分配给最低BER。
在一些实施例中,DSA请求包括业务优先级参数以及最大等待时间参数。当流请求是用于尽力(BE)服务质量业务时,可以传输业务优先级参数。业务优先级参数可以是三(3)比特。因此,可以把八(8)个优先等级中的任何一个分配给新服务流。可以分配其他数量的优先等级。可以为上行链路服务流和下行链路服务流两者建立业务优先级。IEEE 802.16m草案9(2010)的表734示出了具有业务优先级指示器以及为流指定最大等待时间的参数L的DSA Req消息的格式。可以通过应用指定参数L并且可以在DSA请求中传输参数L。
在一些实施例中,根据新服务流的等待时间参数,给新服务流分配优先级。如果服务流具有低等待时间要求,则该服务流将得到高优先级,即使该服务流是仅有的BE类流。例如,可以分配下列优先级:可以给VoIP应用分配优先级7,可以给游戏(gaming)应用分配优先级2,可以给HTTP应用分配优先级1以及可以给FTP应用分配优先级0。BS可以把相同的优先级分配给不同的服务流。因此,可以给多个HTTP流分配相同的业务优先等级。
操作者可以基于除等待时间之外的因子来定义优先级。例如,可以授予来自一些应用的新服务流更高的优先级而不管等待时间。例如,如果用户正在使用索尼游戏机连接到IEEE 802.16网络,则游戏机控制台可以将比其他应用更高的优先级给与游戏应用。可以基于正在访问网络的控制台或计算装置来给出优选处置。
一些应用规定分组丢失灵敏度。例如,在视频解码中,一些分组包含对解码视频来说是必备的内容。如果规定了分组丢失灵敏度,则BS调度器可以降低服务流的BER/PER并且可以使用调节过的BER/PER来确定优先级。
在202,BS将MAC消息传输给MS来发起新BE服务流。MAC消息可以是DSA请求。在一些情况下,DSA请求可以是在IEEE 802.16m草案9(2010)的表734中定义的AAI-DSA-REQ消息并且该消息还包括业务优先级参数和等待时间值。
接收MS的MAC处理DSA请求。在许多情况下,MS接受所接收的DSA请求以建立新BE服务流。在204,MS将指示DSA请求的接受的DSA RSP消息传输到BS。DSA RSP可以是在IEEE 802.16m草案9(2010)的16.2.3.47.2节的表735中描述的格式。
与DSA请求的接受有关地,MS可以为新BE服务流创建具有分配的优先级的上行链路队列。如果具有分配的优先级的BE类上行链路队列已经可用,则新BE服务流可以使用可用的具有分配的优先级的BE类上行链路队列。MS调度器将调度更高的QoS类(例如,ertPS和非请求授权服务(UGS)),因而将从BE服务流调度剩余资源。MS使用所接收的DSA请求中的业务优先级参数执行来自为新BE服务流分配的队列的分组的优先化管理。
MS的调度器调度来自队列的最高优先级分组用于使用分派的上行链路带宽进行的传输。调度来自队列的次最高优先级分组用于使用剩余的上行链路带宽进行的传输。例如,如果MS请求20比特用于上行链路传输并且BS分派10比特用于上行链路传输,则MS按优先序排列最高优先级服务流用于分派的10比特。如果存在有多个具有最高优先级的服务流,则它们平等地共享所分派的上行链路带宽。
在206,BS确认到MS的新服务流的建立。在一些情况下,DSA ACK消息用于确认建立服务流被建立。其后,MS和BS可以使用新服务流进行通信。BS也可以创建具有指定的优先等级的BE队列。如果具有分配的优先级的BE类上行链路队列已经可用,则可以使用具有分配的优先级的BE类上行链路队列。BS和MS的调度器可以利用优先级和等待时间来确定什么时候传输来自BE队列的内容。
图3描绘了MS发起与BS的BE新服务流的方式。当MS中的调度器接收到具有未分配的源和目的地端口以及未分配的源和目的地IP地址的分组时,调度器为新BE服务流确定优先级并且请求MS的媒体访问控制器发送MAC消息给它的BS,以发起新BE服务流。类似于BS发起新BE服务流(图2)的情况,MAC消息可以是包括业务优先级参数和等待时间值的DSA请求。可以以与关于图2描述的方式类似的方式来确定优先级。在302,MS将用于新BE服务流的DSA请求传输至BS。
与图2的情况不同的是,BS可以拒绝分配给新服务流的优先级或新服务流请求而不管优先级。例如,BS可以拒绝优先级,因为BS缺乏用于具有所请求的优先级的新服务流的容量或者因为MS不具有足够高的订金来接收所请求的优先级。所请求的优先级可以给MS提供比MS的用户已经购买的带宽更高的上行链路或下行链路带宽。可以使用DSA RSP消息中的确认码属性来指示新服务流请求的拒绝,而不管是基于优先级还是基于没有处理新服务流的能力而作出该拒绝。例如在IEEE 802.16m草案9(2010)的表735中描述了DSA RSP消息。
如果BS拒绝新BE服务流请求,则MS可以一次或多次请求具有相同优先级的新服务流或者MS可以一次或多次请求具有更低优先级的新服务流。
在304,BS将DSA RSP消息传输到MS来指示新服务流请求的接受或拒绝。
在306,MS将服务流增加的确认传输到BS。在一些情况下,将DSA ACK消息用来确认建立新服务流。BS和MS两者可以创建具有指定的优先等级的BE类队列。如果具有分配的优先级的BE类上行链路队列已经可用,则新BE服务流可以使用可用的具有分配的优先级的BE类上行链路队列。BS和MS的调度器可以利用优先级和等待时间来确定什么时候传输来自BE队列的内容。其后,MS和BS可以使用新服务流进行通信。
图4描绘了根据实施例的MS可以使用的系统。在应用和分类器之间的应用层(未描绘)形成了具有合适报头并具有来自应用的内容的分组。分类器基于将要传输的内容的类型将应用分组映射到不同的QoS队列。分类器将分组分配给ERTPS、UGS或BE队列。本地分类器可以基于优先等级将分组映射到不同的BE队列。在一些实施例中,存在有用于BE队列的八(8)个不同的优先等级。可以使用其他数量的优先等级和队列。然而,BE队列的数量可以小于可用优先等级的数量。例如,如果已经建立了三个BE流,则只有三个BE队列可以被分派。在一些实施例中,可以通过从请求新服务流的形成的BS接收到的MAC消息(例如DSA请求消息)来设置BE队列的优先等级。可以和建立与链路伙伴(link partner,例如BS)的新BE类服务流有关地来设置MS中的BE队列的优先等级。
QoS调度器将基于队列的优先级调度来自队列的分组的传输。例如,可以使用严格的优先级排队,其中更高优先级队列的内容可以在更低优先级队列的内容之前被传输。可以使用其他调度机制,例如加权循环、差额加权循环、分层公平服务曲线、加权公平排队、以及基于类的加权公平排队。
带宽请求聚合器(BWR)将聚集带宽请求并且从BS请求带宽。
碎片集合和打包块(Fragmentation assembly and packing block, FAP)将把来自相同连接(CID)的队列的多个MAC服务数据单元(MSDU)聚集到单个MAC协议数据单元(MPDU)。可以使用单个报头来传输来自多个队列的分组。在一些情况下,单个MSDU可以生成多个MPDU。
另外,MAC可以形成并传输请求新服务流的DSA REQ消息。
图5描述了根据实施例的BS可以使用的系统。图5的系统类似于图4的系统,除了该系统接收来自应用服务器的内容并且进行到MS的通信。在一些实施例中,可以通过从请求新服务流的形成的MS接收到的MAC消息(例如DSA请求消息)来设置图5的系统中的BE队列的优先等级。可以和建立与链路伙伴(例如BS)的新BE类服务流有关地设置BS中的BE队列的优先等级。
图6示出了随时间的示例下行链路(DL)突发使用,其中DL FTP使用和语音使用两者同时发生。当FTP使用和语音使用两者同时发生时DL突发使用显著地变化。
图7示出了随时间的语音通信的平均判分法(MOS)值。当所有用户在尽力服务流上时,FTP业务可以使语音业务减速。使用用于BE业务的业务优先级信息,可以获得语音质量的可接受的MOS,即使FTP用户同时地发送他们的数据。
图8提供了根据实施例的系统的示例。计算机系统800可以包括主机系统802和显示器822。可以在手持式个人计算机、移动电话、机顶盒、或任何计算装置中实现计算机系统800。任何类型的用户接口都是可用的,例如小键盘、鼠标、触摸屏、和/或手势或动作识别。主机系统802可以包括芯片组805、处理器810、主存储器812、存储器814、图形子系统815和无线电设备820。芯片组805可以提供处理器810、主存储器812、存储器814、图形子系统815和无线电设备820之间的内部通信。例如芯片组805可以包括能够提供与存储器814的内部通信的存储器适配器(未描绘)。
可以将处理器810实现为复杂指令集计算机(CISC)或精简指令集计算机(RISC)处理器、x86指令集兼容的处理器、多核或任何其他微处理器或中央处理单元。在各种实施例中,可以用指令来配置处理器810以便执行本文所描述的技术。
主存储器812可以实现为易失性存储装置,例如但不限于随机存取存储器(RAM)、动态随机存取存储器(DRAM)或静态RAM(SRAM)。存储器814可以实现为非易失性存储装置,例如但不限于磁盘驱动器、光盘驱动器、磁带驱动器、内部存储装置、附加存储装置、闪速存储器、电池备份SDRAM(同步DRAM)和/或网络可访问存储装置。
图形子系统815可以执行例如用于显示的静态画面或视频的图像的处理。可以使用模拟或数字接口来以通信方式耦合图形子系统815和显示器822。例如,接口可以是高清晰度多媒体接口、DisplayPort、无线HDMI、和/或无线HD兼容技术当中的任何一种。可以将图形子系统815集成到处理器810或芯片组805。图形子系统815可以是以通信方式耦合到芯片组805的独立卡。
无线电设备820可以包括能够按照可适用的无线标准(例如但不限于IEEE 802.11和IEEE 802.16的任何版本)传输和接收信号的一个或多个无线电设备。例如,无线电设备820至少可以包括物理层接口和媒体访问控制器。该媒体访问控制器可以在用于本文所描述的新服务流建立的通信中使用。
图9描绘了根据实施例的过程。基站或者移动台可以使用图9的过程来发起新服务流。
块902可以包括响应于接收到具有未分配的源和目的地端口以及未分配的源和目的地IP地址的分组,确定服务流的优先级。可以基于关于图2描述的标准进行优先级的确定。
块904可以包括请求到链路伙伴的DSA请求的传输。如果请求传输的装置是移动台,则链路伙伴可以是基站。如果请求传输的装置是基站,则链路伙伴可以是移动台。DSA请求将包括在块902中确定的业务优先级参数以及等待时间信息。等待时间信息可以由请求分组的传输的应用来指定。
块906可以包括链路伙伴为新服务流分派与DSA请求中指定的优先等级相关联的BE类队列。如果具有分配的优先级的BE类上行链路队列已经可用,则可以将具有分配的优先级的BE类上行链路队列用于新服务流。在一些情况下,链路伙伴可以拒绝指定的优先等级并且在DSA RSP消息中指示拒绝。
块908可以包括考虑到指定的优先等级,链路伙伴传输来自BE类队列的内容。
本发明的实施例可以实现为下列中的任何一项或其组合:使用主板互连的一个或多个微芯片或集成电路、硬连线逻辑、通过存储装置存储的并且通过微处理器执行的软件、固件、专用集成电路(ASIC)、和/或现场可编程门阵列(FPGA)。术语“逻辑”可以包括例如软件或硬件和/或软件和硬件的结合。
可以例如作为计算机程序产品来提供本发明的实施例,所述计算机程序产品可以包括具有存储其上的机器可执行指令的一个或多个机器可读媒体,所述机器可执行指令在被一个或多个机器(例如计算机、计算机的网络或其他电子装置)执行时,可以导致一个或多个机器执行根据本发明实施例的操作。机器可读介质可以包括,但不限于,软盘、光盘、CD-ROM(光盘只读存储器)和磁光盘、ROM(只读存储器)、RAM(随机存取存储器)、EPROM(可擦写可编程只读存储器)、EEPROM(电可擦写可编程只读存储器)、磁卡或光卡、闪速存储器或适合于存储机器可执行指令的其他类型的媒体/机器可读介质。
附图和前面的描述给出了本发明的示例。尽管描绘为许多完全不同的功能项,但是本领域技术人员将认识到可以将这样的元件中的一个或多个很好地结合到单独的功能元件。备选地,可以将某些元件分成多个功能元件。可以将来自一个实施例的元件添加到另一个实施例中。例如本文所描述的过程的顺序可以被改变并且不限于本文所描述的方式。此外,不需要以所示的顺序来实现任何流程图的动作;也不是所有的动作都必须被执行。同样地,不依赖于其他动作的那些动作可以与其他动作并行地执行。然而,本发明的范围决不会被这些具体示例所限制。无论是否在说明书中明确地给出,许多改变(例如结构、尺寸、和材料使用中的差异)都是可能的。本发明的范围至少与所附的权利要求书给出的范围一样宽。
Claims (20)
1. 一种使用无线移动计算装置执行的计算机实现的方法,所述方法包括:
响应于接收到用于传输的分组,确定属于尽力(BE)类的服务流的优先等级,没有基于所述分组的源/目的地端口和源/目的地IP地址将所述分组分配给任何服务流;
请求新BE类服务流,所述请求包括请求到链路伙伴的媒体访问控制(MAC)消息的传输,所述MAC消息包括确定的优先等级;以及
接收所请求的BE类服务流的形成的确认或所请求的BE类服务流的拒绝的其中之一。
2. 如权利要求1所述的方法,其中所述MAC消息包括DSA请求并且所述DSA请求包括指定所确定的优先等级的业务优先级参数。
3. 如权利要求2所述的方法,其中所述DSA请求包括与所述BE类服务流相关联的等待时间值。
4. 如权利要求1所述的方法,其中确定服务流的优先等级包括:
接收与接收到的用于传输的分组相关联的等待时间参数,以及
为最低等待时间参数分配最高优先等级。
5. 如权利要求1所述的方法,其中确定服务流的优先等级包括:
接收与接收到的用于传输的分组相关联的误码率,以及
为最低误码率服务流分配最高优先等级。
6. 如权利要求1所述的方法,其中确定服务流的优先等级包括:
为语音或视频通信服务流分配最高优先等级;
为超文本传输协议(HTTP)通信分配中等优先等级;以及
为文件传输协议(FTP)通信分配最低优先等级。
7. 如权利要求1所述的方法,还包括:
为所述新BE类服务流分派与确定的优先等级相关联的至少一个BE类队列,以及
基于来自至少一个分派的BE类队列当中的BE类队列的内容的优先等级,调度所述内容用于传输。
8. 如权利要求1所述的方法,还包括:
响应于接收到所请求的BE类服务流的拒绝,再请求至少一个具有相同的或更低的优先等级的新尽力(BE)类服务流。
9. 如权利要求1所述的方法,其中所述方法被基站或移动台的其中一个使用。
10. 一种系统,所述系统包括:
至少一个天线;
以通信方式耦合到至少一个天线的无线电设备;以及
处理器,所述处理器配置为:
响应于接收到用于传输的分组,确定属于尽力(BE)类的服务流的优先等级,没有基于所述分组的源/目的地端口和源/目的地IP地址将所述分组分配给任何服务流,以及
请求新BE类服务流,其中为了请求,所述处理器将请求到链路伙伴的媒体访问控制(MAC)消息的传输,所述MAC消息包括所确定的优先等级。
11. 如权利要求10所述的系统,其中所述MAC消息包括DSA请求并且所述DSA请求包括指定所确定的优先等级的业务优先级参数。
12. 如权利要求11所述的系统,其中所述DSA请求包括与所述新BE服务流相关联的等待时间值。
13. 如权利要求10所述的系统,其中为确定服务流的优先等级,所述处理器将:
为最低等待时间参数或最低误码率分配最高优先等级,所述最低等待时间参数或最低误码率与接收到的用于传输的分组相关联。
14. 如权利要求10所述的系统,其中为确定服务流的优先等级,所述处理器将:
为语音或视频通信服务流分配最高优先等级;
为超文本传输协议(HTTP)通信分配中等优先等级;以及
为文件传输协议(FTP)通信分配最低优先等级。
15. 如权利要求10所述的系统,其中所述处理器还配置为:
请求为所述新BE类服务流分派与所确定的优先等级相关联的至少一个BE类队列,以及
请求基于来自所述至少一个BE类队列中的一个或多个BE类队列的内容的优先等级,调度所述内容用于传输。
16. 如权利要求10所述的系统,其中所述处理器还配置为:
响应于接收到所请求的新BE类服务流的拒绝,再请求至少一个具有相同的或更低的优先等级的新尽力(BE)类服务流。
17. 一种具有存储在其上的指令的计算机可读介质,所述指令在被计算机执行时,导致所述计算机:
响应于接收到用于传输的分组,确定属于尽力(BE)类的服务流的优先等级,没有基于所述分组的源/目的地端口和源/目的地IP地址将所述分组分配给任何服务流;
请求新BE类服务流,其中为了请求,所述计算机将请求到链路伙伴的媒体访问控制(MAC)消息的传输,所述MAC消息包括所确定的优先等级;
接收所请求的BE类服务流的形成的确认;
请求分派与所确定的优先等级相关联的BE类队列;以及
请求基于来自至少一个分派的BE类队列当中的BE类队列的内容的优先等级,调度所述内容用于传输。
18. 如权利要求17所述的计算机可读介质,其中所述MAC消息包括DSA请求并且所述DSA请求包括指定所确定的优先等级的业务优先级参数并且包括与所述BE服务流相关联的等待时间值。
19. 如权利要求17所述的计算机可读介质,其中为确定服务流的优先等级,所述计算机将:
为与接收到的用于传输的分组相关联的最低等待时间参数或最低误码率分配最高优先等级。
20. 如权利要求17所述的计算机可读介质,其中为确定服务流的优先等级,所述计算机将:
为语音或视频通信服务流分配最高优先等级;
为超文本传输协议(HTTP)通信分配中等优先等级;以及
为文件传输协议(FTP)通信分配最低优先等级。
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