CN101843070B - Method and apparatus for communicating over multiple networks - Google Patents

Method and apparatus for communicating over multiple networks Download PDF

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Publication number
CN101843070B
CN101843070B CN 200780101295 CN200780101295A CN101843070B CN 101843070 B CN101843070 B CN 101843070B CN 200780101295 CN200780101295 CN 200780101295 CN 200780101295 A CN200780101295 A CN 200780101295A CN 101843070 B CN101843070 B CN 101843070B
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mode
communication
tdf
wireless
packet
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CN 200780101295
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Chinese (zh)
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CN101843070A (en )
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于劲飞
张志刚
张俊彪
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汤姆森特许公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/2854Wide area networks, e.g. public data networks
    • H04L12/2856Access arrangements, e.g. Internet access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/2854Wide area networks, e.g. public data networks
    • H04L12/2856Access arrangements, e.g. Internet access
    • H04L12/2869Operational details of access network equipments
    • H04L12/2898Subscriber equipments
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/46Interconnection of networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/46Interconnection of networks
    • H04L12/4633Interconnection of networks using encapsulation techniques, e.g. tunneling

Abstract

一种在同轴电缆上的非对称数据传输(ADoC)双模式设备,其提供了对有线操作模式和无线操作模式两者的支持,并且可以周期性地在这两种模式之间切换。 An asymmetric data transmission on the coaxial cable (the ADoC) dual mode device that provides support for both wired and wireless modes of operation of the operation mode, and may switch between the two modes periodically. 在ADoC(有线)模式中,该双模式设备操作为ADoC站,而在WLAN(无线)模式中,其操作为WLAN接入点。 In ADoC (wired) mode, the device operates as a dual mode ADoC station, while WLAN (wireless) mode, which operates as a WLAN access point. 在一个具体的实施方案中,通信单元(3100,3104,3106)被配置用于在包括无线介质和有线介质的多种介质上通信,该通信单元可操作于(1)无线模式,使用无线协议在无线介质上通信,以及(2)有线模式,使用所述无线协议的变型在有线介质上通信。 In a specific embodiment, the communication unit (3100,3104,3106) is configured for a variety of media include wired media and wireless media communication, the communication unit is operable to (1) a wireless mode, using a wireless protocol communication over a wireless medium, and (2) a wired mode, using the wireless communications protocol variations on the wired media. 该实施方案还包括切换器(3104),用于将所述通信单元在无线模式和有线模式之间切换。 This embodiment also includes a switching device (3104), the communication unit for switching between a wired mode and a wireless mode.

Description

以多种模式进行通信的方法及装置 The method of communicating in multiple modes and devices

技术领域 FIELD

[0001] 本公开一般地致力于通信系统的各个方面。 [0001] The present disclosure generally dedicated to various aspects of the communication system.

背景技术 Background technique

[0002] 存在用于将用户与信息连接的通信系统。 [0002] communication systems exist for connection to the user information. 这样的系统可以使用同轴电缆以及无线网络。 Such systems may use a coaxial cable and a wireless network. 现有的系统展现出各种局限性。 Existing systems exhibit a variety of limitations.

发明内容 SUMMARY

[0003] 根据一个总的方面,诸如例如通信单元之类的设备用于在包括无线介质和有线介质的多种介质上进行通信。 [0003] According to one general aspect, such as for example the communication unit or the like device for communication in a variety of media includes wired media and wireless media. 该通信单元可操作于(I)无线模式,使用无线协议在无线介质上通信,以及(2)有线模式,使用所述无线协议的变型(variat1n)在有线介质上通信。 The communication unit is operable to (I) wireless mode, using a wireless communication protocol, and (2) a wired mode over the wireless medium, using the wireless protocol variant (variat1n) communicate over a wired medium. 诸如例如切换器之类的设备被配置为将通信设备(例如,所述通信单元)在无线模式和有线模式之间切换。 Such as for example switches or the like device is configured to the communication device (e.g., the communication unit) to switch between a wired mode and a wireless mode.

[0004] 根据另一总的方面,一种包括在包含无线介质和有线介质的多种介质上进行通信的方法,所述通信使用以下中的一个或多个:(I)无线模式,使用无线协议在无线介质上通信;以及(2)有线模式,使用所述无线协议的变型在有线介质上通信。 Method [0004] According to another general aspect, comprising communicating in a variety of media comprising wired media and wireless media, the communication using one or more of the following: (I) the radio mode, the radio protocol communication over a wireless medium; and (2) a wired mode, using the wireless communications protocol variations on the wired media. 该方法包括在无线模式和有线模式之间进行切换。 The method comprises switching between a wired mode and a wireless mode.

[0005] 根据另一总的方面,一种包括处理器可读介质的装置,所述处理器可读介质包括在所述处理器可读介质上存储的用于在包含无线介质和有线介质的多种介质上进行通信的指令,所述通信使用以下中的一个或多个:(1)无线模式,使用无线协议在无线介质上通信;以及(2)有线模式,使用所述无线协议的变型在有线介质上通信。 [0005] According to another general aspect, an apparatus comprises a processor-readable medium, a processor-readable medium comprising the processor-readable storage medium comprising a wired medium and a wireless medium instructions for communicating on a variety of media, the communication using one or more of the following: (1) wireless mode, using a wireless protocol over a wireless communication medium; and (2) a wired mode, using variations of the radio protocols communicate over a wired medium. 该指令还用于在无线模式和有线模式之间进行切换。 The instructions also for switching between a wired mode and a wireless mode.

[0006] 在以下的附图和描述中提出一个或多个实施方案的细节。 [0006] The details of one or more embodiments in the following drawings and description. 即使被以一个特定的方式描述,也应清楚可以以各种方式来配置或体现所述实施方案。 Even if described in one particular manner, it should be clear that may be configured or embodied in various manners described embodiments. 例如,可以将实施方案作为方法来执行,或者将其体现为被配置以执行一组操作的设备,或者将其体现为存储用于执行一组操作的指令的设备。 For example, embodiments may be performed as a method, or embodied as an apparatus configured to perform a set of operations, or embodied to store instructions for performing a set of operations of the device. 连同附图和权利要求一起考虑以下详细的描述,其它方面和特征将变得明显。 With the accompanying drawings and claims considered together with the following detailed description, other aspects and features will become apparent.

附图说明 BRIEF DESCRIPTION

[0007] 图1图示简化的示范性的TDF接入网络架构。 [0007] FIG 1 illustrates a simplified TDF access network architecture exemplary.

[0008] 图2图示在OSI参考模型中的802.1lMAC子层。 [0008] FIG 2 illustrates 802.1lMAC sublayer in OSI reference model.

[0009] 图3图示在OSI参考模型中的TDF传送实体的实施方案。 [0009] FIG. 3 illustrates the OSI reference model TDF transmission entity embodiment.

[0010] 图4图示通信模式入口例程的实施方案。 [0010] FIG 4 illustrates an embodiment of a communication mode entry routine.

[0011] 图5图示TDF超级帧结构的实施方案。 [0011] FIG 5 illustrates an embodiment of a TDF superframe structure.

[0012] 图6图示注册(registrat1n)例程的实施方案。 [0012] FIG. 6 illustrates an embodiment Register (registrat1n) routine.

[0013] 图7图示注销(unregistrat1n)例程的实施方案。 [0013] FIG. 7 illustrates an embodiment of cancellation (unregistrat1n) routine.

[0014] 图8图示存活(alive)通知例程的实施方案。 [0014] FIG. 8 illustrates survival (Alive) notification routines embodiment.

[0015] 图9包括描绘了TDF网络的实施方案的系统图。 [0015] FIG. 9 depicts a system comprising an embodiment of FIG TDF network.

[0016] 图10包括根据图9的AP和调制解调器的实施方案的框图。 [0016] Figure 10 a block diagram of an AP and a modem according to an embodiment 9 of FIG.

[0017] 图11包括上行链路传送处理的实施方案的流程图。 [0017] FIG. 11 embodiment includes a scheme for the uplink transmission process flowchart.

[0018] 图12包括在以太网分组和WLAN分组之间的一对一映射的实施方案的图。 [0018] FIG 12 includes a diagram of an embodiment of a packet and a WLAN packet-one mapping between the Ethernet.

[0019] 图13包括在多个以太网分组和单个WLAN分组之间进行变换的实施方案的图。 [0019] FIG. 13 view of an embodiment includes conversion between multiple Ethernet packets and a single WLAN packet.

[0020] 图14包括描绘图13的变换中的分组流的图。 [0020] FIG 14 includes a diagram depicting packet flow in the transformation 13 of FIG.

[0021] 图15包括根据图14的EIW首标的实施方案的图。 [0021] FIG 15 includes EIW header of FIG. 14 according to the embodiment.

[0022] 图16包括上行链路接收处理的实施方案的流程图。 [0022] FIG 16 a flow chart of the embodiment comprises an uplink reception process.

[0023] 图17包括描绘解封装分组的实施方案的图。 [0023] FIG. 17 depicts a view of an embodiment comprises a de-encapsulated packet.

[0024] 图18包括描绘根据图10的PADM的实施方案的图。 [0024] FIG. 18 depicts a view of an embodiment comprising a PADM 10 of FIG.

[0025] 图19包括下行链路传送处理的实施方案的流程图。 [0025] FIG. 19 is a flowchart of embodiments of a downlink transmission process comprises.

[0026] 图20包括下行链路接收处理的实施方案的流程图。 [0026] FIG 20 a flow chart of the embodiment comprises a downlink reception process.

[0027] 图21图示具有轮询和时分介质接入两者的TDF超级帧结构的实施方案。 [0027] FIG. 21 illustrates embodiments of the TDF superframe structure having both the polling and the medium access time division.

[0028] 图22图示具有混合介质接入机制的TDF超级帧结构的实施方案。 [0028] FIG. 22 illustrates embodiments of the TDF superframe structure having a hybrid medium access mechanism.

[0029] 图23图示TDF网络中的框图、以及TDF网络中的SP和站。 [0029] TDF network block diagram illustrated in FIG. 23, and TDF station and the network SP.

[0030] 图24图示轮询通知例程的实施方案。 [0030] FIG. 24 illustrates an embodiment of a polling notification routine.

[0031] 图25图示轮询例程的流程图。 [0031] FIG. 25 illustrates a flowchart of a polling routine.

[0032] 图26图示具有混合介质接入机制的TDF超级帧结构的实施方案。 [0032] FIG. 26 illustrates an embodiment of the TDF superframe structure having a hybrid medium access mechanism.

[0033] 图27图示从基于争用的模式切换到时分模式的处理的流程图。 [0033] FIG. 27 illustrates a contention based handover from a mode to the flowchart of a process of time division mode.

[0034] 图28图示从时分模式切换到基于争用的模式的处理的流程图。 [0034] FIG. 28 illustrates a time-division switching from mode to mode flowchart of a process based on contention.

[0035]图 29 是TDF (ADoC) STA 的框图。 [0035] FIG. 29 is a block diagram TDF (ADoC) STA's.

[0036] 图30是根据实施方案的具有双模式设备的TDF(ADoC) STA的框图。 [0036] FIG. 30 is a block diagram TDF (ADoC) STA having a dual mode device according to an embodiment.

[0037] 图31是TDF (ADoC) STA双模式设备的硬件实施方案的框图。 [0037] FIG. 31 is a block diagram TDF (ADoC) STA hardware embodiment of a dual mode device.

[0038] 图32是TDF(ADoC) STA双模式设备的另一硬件实施方案的框图。 [0038] FIG. 32 is a block diagram TDF (ADoC) STA dual mode device to another hardware embodiment.

[0039] 图33是将本原理的双模式设备实施为图10的调制解调器的框图。 [0039] FIG. 33 is a dual mode device according to the present embodiment is a block diagram illustrating the principles of the modem 10 of FIG.

[0040] 图34图示了TDF超级帧结构的另一实施方案。 [0040] FIG. 34 illustrates another embodiment of a TDF superframe structure.

具体实施方式 detailed description

[0041] 至少对图1-8的讨论呈现了包括一个或更多新颖性的和创造性的方面或特征的各种实施方案。 [0041] Figures 1-8 least discussion presented comprising one or more aspects or features of novelty and inventive various embodiments. 这些实施方案中的至少一个提供了一种使用无线系统的典型特征在电缆上传送数据的系统。 These embodiments at least one of the typical characteristics of a system using a wireless system for transmitting data over a cable. 具体地,至少一个实施方案在同轴电缆上使用时分多路复用。 Specifically, at least one embodiment using time-division multiplexing on the coaxial cable. 这样的系统例如允许有线电视运营商在频谱的一部分中提供电视信号并且在频谱的另一部分上提供附加服务。 Such systems allow cable operators to offer e.g. a television signal in a portion of the spectrum and provide additional services on another portion of the spectrum. 该附加服务例如可以包括因特网接入,其包括用于搜索因特网并且观看因特网上的网页的接入、以及用于接收因特网上的服务(诸如,例如,视频点播)的接入。 The additional services may include, for example, access the Internet, including searching the Internet for access and viewing pages on the Internet, and for receiving a service on the Internet (such as, e.g., video on demand) access.

[0042] 至少对图9-20的讨论呈现了附加的实施方案,并且这些附加的实施方案中的至少一个通过描述封装的新颖性的和创造性的使用而扩展了对图1-8的讨论。 [0042] FIG least 9-20 discussion presents additional embodiments, and these additional embodiments, at least a description of the novel package and the inventive use of the extended discussion of Figs. 1-8. 一个特定的实施方案包括从多个主机接收以太网分组的调制解调器。 A particular embodiment includes a plurality of receive Ethernet packets from the modem host. 每个主机可能试图通过路由器与不同的网站通信。 Each host through a router may be trying to communicate with different site. 调制解调器将这些分组封装成根据用于无线传送的格式结构(formatstructure)、或者协议而被格式化的单个分组。 Modem encapsulating the packets into a single packet is formatted according to the structure (formatstructure) for wireless transmission, or formatted protocol. 然而,在同轴电缆上发送封装后的分组以供路由器接收。 However, in the coaxial cable transmits the encapsulated packet to the router for receiving. 在一个实施方案中,路由器继而将这些分组发送给每个主机试图与之进行通信的不同的网站。 In one embodiment, the router then transmits the packets to each of the host to attempt to communicate different sites.

[0043] 与每次仅仅封装一个分组的系统相比,上述实施方案使用的封装提供了吞吐量的增加。 [0043] Compared with the package only one packet per system, the above-described embodiments using the package provides an increase in throughput. 由此,在多个以太网分组上分布(spread out)无线格式结构的开销(overhead)。 Thus, the distribution (spread out) radio format overhead structure (overhead) over a plurality of Ethernet packets. 这与封装的常规使用相反,其例如允许由另一通信层来提供附加特征,或者通过在封装后的数据中保留传统的(legacy)巾贞结构来确保反向兼容性(backward compatibility)。 This is the opposite of the package conventionally used, for example, to provide additional features to allow communication by another layer, or to ensure backward compatibility (backward compatibility) by retaining conventional (Legacy) data structure Zhen towel packages. 此外,依赖于系统设计,上述的实施方案的封装还允许将来自多个源的数据封装在一起,以及将去往不同最终用户(例如,不同的网站,或者不同的主机)的数据封装在一起。 Further, depending on the system design, the above-described embodiments of the package also allows data from multiple sources of the package together, and destined for different end users (e.g., different sites, or a different host) data package together .

[0044] 至少对图21-34的讨论呈现其它实施方案。 [0044] Other embodiments exhibit at least discussion of Figure 21-34. 这些实施方案中的一些致力于与轮询和基于争用的接入相关联的帧结构以及与轮询和基于争用的接入相关联的新颖性和创造性的方面。 Some dedicated frame structure based on the polling and contention access associated with these aspects and embodiments and aspects of the polling based access associated with novel and creative contention. 另外的实施方案致力于双模式的配置。 Further embodiments of the dedicated dual mode.

[0045] 该应用现在提供了图1-8的描述。 [0045] This application is now provides a description of the Figs. 1-8. 注意,对图1-8的描述的各个部分使用标题。 Note that, using the title of each section described in Figure 1-8. 给定部分的标题不应被解释为将该部分的公开限制为该标题的主题,或者也不应被解释为将其它部分的公开限制为除了该标题的主题之外的主题。 A given portion of the header should not be construed as limiting the disclosed subject matter that the portion of the title, or should not be construed to limit the disclosure to the other portion except the subject of the title theme. 标题是示范性的,并且旨在作为对读者的一般的辅助。 The title is exemplary, and are intended as a general aid to the reader. 标题不是旨在约束本公开的流程或者限制本公开的应用性或者普遍性。 The title is not bound by the process of the present disclosure is intended to limit the disclosure or use of, or universal.

[0046] 总的描沭 [0046] The general description Shu

[0047]应用t青境 [0047] Application t green territory

[0048] 为了通过现有的同轴电缆TV系统(CATV)提供数据服务,至少一个实施方案在电缆接入网络中部署了遵从时分功能(TDF)协议的接入点(AP)和站(STA)。 [0048] In order to provide data service over existing coaxial cable TV system (CATV), at least one embodiment deploying the compliance division function (the TDF) protocol in the cable access network access point (AP) and a station (STA ). AP和STA经由处于分层级的树状结构的分路器(splitter)而连接。 AP and STA through a splitter tree structure in hierarchical (Splitter) is connected. 以此方式,用户在家可以经由电缆接入网络接入远程IP核心网络。 In this way, users at home can access the remote IP core network via a cable access network. 如图1所图示的,图示了详细的网络拓扑。 As illustrated in Figure 1, illustrates a detailed network topology.

[0049] 如从图1中可见,在这种典型的接入网络基础设施中,存在遵从TDF协议的AP,该AP具有一个与IP核心网络连接的以太网接口、以及一个与电缆接入网络连接的同轴电缆接口。 [0049] As can be seen from Figure 1, in such a typical access network infrastructure, the presence of the TDF protocol compliant AP, the AP has an Ethernet interface connected to the IP core network, and a Cable access network and the coaxial cable connector interface. 在电缆接入网络的另一端,存在遵从TDF协议的STA,即,终端,所述STA经由同轴电缆接口与电缆接入网络连接并且经由以太网接口与家庭LAN(局域网)连接。 At the other end of the cable access network, the presence of the TDF protocol compliant STA, i.e., end, the STA is connected via a coaxial cable access network interface and is connected via the Ethernet interface with the home LAN (Local Area Network).

[0050] 根据至少一个实施方案,根据802.11系列规范,TDF AP和STA两者在逻辑链路控制子层、MAC子层以及物理层中分离地实施协议栈。 [0050] According to at least one embodiment, according to the 802.11 family of specifications, both the STA and TDF AP logical link control sub-layer, MAC sublayer and physical layer embodiments separately in the protocol stack. 然而,在MAC子层中,TDF AP和STA利用TDF帧传送实体来替换802.11帧传送实体。 However, in the MAC sublayer, the AP TDF STA and TDF frame transmission entity using alternative 802.11 frame transmission entity. 这样,用于TDF AP和STA的MAC子层由802.11帧封装/解封装实体以及TDF帧传送实体组成,而用于遵从802.11的AP和STA的MAC子层由802.11帧封装/解封装实体以及802.11帧传送实体组成。 Thus, the MAC sublayer for TDF AP and the STA by 802.11 encapsulation / decapsulation entity and TDF frame transmission entity, while for 802.11 compliant AP and the STA by the MAC sublayer 802.11 encapsulation / decapsulation entity and 802.11 frame transmission entity. 对于集成的AP和STA, TDF帧传送实体和802.11帧传送实体可以同时并存,以提供802.11和TDF功能这两者。 For an integrated AP and the STA, and TDF frame transmission entity 802.11 frame transmission entity may co-exist at the same time, to provide both the 802.11 and TDF functionality. 可以通过手动或者动态配置来实现两种模式之间的切换。 Or you can be manually configured to dynamically switch between the two modes.

[0051] 基本方法 [0051] The basic method

[0052] TDF协议的主要思想是在同轴电缆介质中而不是在空中传送IEEE802.11帧。 The main idea of ​​[0052] TDF protocol in a coaxial cable transmission medium instead of air IEEE802.11 frames. 利用IEEE 802.11机制的目的是利用802.11协议栈的成熟的硬件和软件实施方案。 The purpose of using the IEEE 802.11 mechanism is to use sophisticated hardware and software embodiments 802.11 protocol stack.

[0053] TDF的主要特征是其独特的用于传送IEEE 802.11数据帧的介质接入控制方法。 [0053] The main feature of TDF is its unique medium access control method for transmitting IEEE 802.11 data frames for. SP,其不利用常规的IEEE 802.1IDCF (分布式协调功能)或者PCF (点协调功能)机制来交换包括MSDU (MAC服务数据单元)和MMPDU (MAC管理协议数据单元)的MAC帧。 SP, which are not to exchange MAC frames comprises the MSDU (MAC service data unit) and the MMPDU (MAC Management Protocol Data Unit) using conventional IEEE 802.1IDCF (distributed coordination function) or the PCF (point coordination function) mechanism. 而是,其使用时分接入方法来传送MAC帧。 Instead, using the time division access method to transmit MAC frames. 这样TDF是定义了位于MAC子层中的帧传送实体的详细的实施方案的接入方法。 Such TDF is an access method defined detailed embodiments of the MAC sublayer is located in a frame transmission entity.

[0054] 为了比较的目的,如图2所示,我们在此图示OSI参考模型中的IEEE802.1lMAC子层协议。 [0054] For comparison purposes, as shown in Figure 2, we IEEE802.1lMAC illustrated herein sublayer protocol in the OSI reference model. 而在图3中图示OSI参考模型中TDF协议的确切的位置。 The exact position of the TDF protocol in the OSI reference model is illustrated in FIG. 3.

[0055] 通信樽式入口例稈 [0055] Example Communication inlet bottle straw formula

[0056] 当前,提出了如以下描述的遵从TDF的站的两种通信模式。 [0056] Currently, two modes of communication is proposed in compliance with the TDF station as described below. 一种模式是标准的IEEE 802.11操作模式,其遵守在IEEE 802.11系列标准中定义的帧结构和传送机制;另一种模式是TDF操作模式,将在下面的段落中讨论有关该TDF操作模式的详细信息。 One mode is the standard IEEE 802.11 operation mode, which comply with the frame structure and transmission mechanism defined in the IEEE 802.11 family of standards; Another model is the TDF operation mode, which will be discussed in detail about the TDF operation mode in the following paragraphs information. 在图4中指示了在TDF STA启动时确定进入哪一个操作模式的策略。 When the determination indicates TDF STA starts to enter a mode of operation which policy 4 in FIG. 一旦TDF STA从AP接收到同步巾贞,则使TDF STA能够进入TDF模式,如果在预设的超时内没有接收到同步帧,则TDFSTA保持不变或者转为IEEE 802.11模式。 Once the STA received from the AP TDF synchronization towel Zhen, the TDF so that the STA enters into TDF mode is possible, if there is no synchronization frame received within a preset timeout, then remains constant or TDFSTA into IEEE 802.11 mode.

[0057] TDF协议功能描沭 [0057] TDF protocol functions described Shu

[0058] 接入方法 [0058] Access Method

[0059] TDF站中的物理层可以具有多个数据转移速率的能力,其允许在改进性能和设备维护的目的下执行动态速率切换的实施方案。 Physical layer [0059] TDF station may have multiple data transfer rate capabilities that allow the implementation of the dynamic rate switching performed in purpose to improve performance and equipment maintenance. 当前,TDF站可以支持三种类型的数据速率:54Mbps、18Mbps和6Mbps。 Current, TDF station may support three types of data rates: 54Mbps, 18Mbps, and 6Mbps. 主要在54Mbps数据速率下提供数据服务。 The main provider of data services at 54Mbps data rate. 当对于站而言,支持54Mbps数据传送存在某些问题时,可以暂时切换到18Mbps数据速率。 When the station for, supporting data transfer certain problems 54Mbps, 18Mbps can temporarily switch to the data rate. 6Mbps数据速率操作模式是为网络维护和站调试的目的而设计的。 6Mbps data rate mode of operation for network maintenance and station debugging designed for the purpose.

[0060] 可以在TDF站进入TDF通信例程之前静态地配置数据速率,并且在整个通信处理期间内保持相同数据速率。 [0060] access to the data rate statically configured before a TDF station TDF communication procedure, and remain the same throughout the data rate during the communication process. 另一方面,TDF站还可以支持服务期间的动态数据速率切换。 On the other hand, TDF station may also support dynamic data rate switching during the service. 数据速率切换的准则可以基于信道信号质量和其它因素。 Guidelines data rate switching of the channel signal quality and other factors may be based.

[0061] TDF协议的基本接入方法是时分多路接入(TDMA),其通过将同一信道划分为不同的时隙来允许多个用户共享该信道。 [0061] The fundamental access method of the TDF protocol is time division multiple access (TDMA), which allows multiple users to share the same channel by channel is divided into different time slots. TDF STA —个接一个地快速相继地传送上行链路业务量,每个TDF STA使用TDF超级帧中的、由TDFAP指派的它们自身的时隙。 TDF STA - transmit in rapid succession one after another uplink traffic, the STA using TDF per TDF superframe by the TDFAP their own assigned time slot. 对于下行链路业务量,STA共享信道,并且通过将数据帧或者管理帧中的目的地地址信息与它们的地址进行比较而选择以它们为目标的数据帧或者管理帧。 For downlink traffic, the STA shared channel, and by the data frame or management frame destination address information is compared with the address thereof is selected as a target in their data frames or management frames. 图5图示了在存在m个同时竞争上行链路传送机会的STA时用于典型的TDF超级帧的TDF超级帧结构和时隙分配的例子。 FIG 5 illustrates an example of a TDF superframe structure and slot allocation for a typical TDF superframe when there are m simultaneously compete for the uplink transmission opportunity STA.

[0062] 如图5中所不,每个TDF超级巾贞存在tdf TotalTimeSlotNumber个固定数目的时隙,其由以下组成:一个用于从TDF AP向TDF STA发送时钟同步信息的同步时隙;一个用于发送对上行链路时隙分配的注册请求的争用(content1n)时隙;由注册的TDFSTA 一个接一个地向TDF AP发送数据和某些管理帧所使用的tdfUplinkTimeSlotNumber个上行链路时隙;以及由TDFAP向调制解调器传送数据和注册响应管理帧所使用的tdfDownlinkTimeSlotNumber个下行链路时隙。 [0062] are not, per TDF superframe towel Chen presence tdf TotalTimeSlotNumber fixed number of time slots in Figure 5, consisting of the following components: a clock for transmitting synchronization information from TDF TDF AP to the STA synchronization timeslot; a send a registration request for contention slot allocation for the uplink with (content1n) slot; one by one from the transmit data register TDFSTA the TDF AP and some management frames to use uplink time slots tdfUplinkTimeSlotNumber ; tdfDownlinkTimeSlotNumber and downlink time slots used by the TDFAP modem to transmit data and registration response management frames. 除了同步时隙之外,被命名为公共时隙的所有其它时隙具有长度等于tdfCommonTimeSlotDurat1n的相同的持续时间。 In addition to the synchronization timeslot, it is named as common time all other slots have the same length of time equal to the duration of tdfCommonTimeSlotDurat1n. 定义tdfCommonTimeSlotDurat1n的值以允许,对于最高数据速率模式,在一个标准时隙中传送至少一个最大的IEEE 802.1IPLCP (物理层会聚协议)协议数据单元(PTOU)。 TdfCommonTimeSlotDurat1n value is defined to allow for the highest data rate mode, transmitting at least one maximum IEEE 802.1IPLCP (physical layer convergence protocol) protocol data unit (PTOU) in a standard slot. 同步时隙的持续时间tdfSyncTimeS1tDurat1n短于公共时隙的持续时间,这是因为在同步时隙中从TDF AP向TDF STA传送的时钟同步帧短于802.11数据帧。 Synchronous time slot tdfSyncTimeS1tDurat1n duration shorter than the duration of the common slot, because the clock synchronization time slot TDF AP transmitted from the TDF STA synchronization frame is shorter than the 802.11 data frame.

[0063] 结果,可以通过以下公式来计算被定义为tdfSuperframeDurat1n的一个TDF超级帧的持续时间: [0063] Results may be calculated by the following formula is defined as the duration of one TDF superframe tdfSuperframeDurat1n:

[0064] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n+tdfCommonTimeSlotDurat1n氺(tdfTotalTimeSlotNumber-1) [0064] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n + tdfCommonTimeSlotDurat1n Shui (tdfTotalTimeSlotNumber-1)

[0065] tdfTotalTimeSlotNumber、tdfUplinkTimeSlotNumber 以及tdfDownl inkT imeSlotNumber之间的关系满足以下等式: [0065] The relationship between tdfTotalTimeSlotNumber, tdfUplinkTimeSlotNumber tdfDownl inkT imeSlotNumber and satisfy the following equation:

[0066] tdfTotalTimeSlotNumber = tdfUplinkT imeSlotNumber+tdfDownlinkT imeSlotNumber+2 [0066] tdfTotalTimeSlotNumber = tdfUplinkT imeSlotNumber + tdfDownlinkT imeSlotNumber + 2

[0067] 此外,TDF超级帧中为TDF STA分配的上行链路时隙的数目可以从I改变为tdfUplinkTimeSlotThreshold。 [0067] Furthermore, TDF superframe may change from one to tdfUplinkTimeSlotThreshold I is the number of uplink timeslots allocated TDF STA. 相应地,TDF超级巾贞中可用的下行链路时隙可以从(tdfTotalTimeSlotNumber-2)改变为(tdfTotalTimeSlotNumber-2-tdfMaximumUplinkTimeSlotNumber)。 Accordingly, TDF super Zhen towel available downlink timeslots may change from (tdfTotalTimeSlotNumber-2) to (tdfTotalTimeSlotNumber-2-tdfMaximumUplinkTimeSlotNumber). 每次当存在一个要求上行链路时隙的TDF STA时,TDF AP将从可用的下行链路时隙中引出(deduce) —个或多个时隙,并且然后将这些时隙分配给TDF STA,只要在这之后上行链路时隙数目不超过tdfMaximumUplinkTimeSlotNumber即可。 When there is a requirement every uplink timeslot TDF STA, TDF AP available from the downlink slot lead-out (deduce) - one or more slots, and these time slots are then allocated to the TDF STA , after which the uplink long as the number does not exceed tdfMaximumUplinkTimeSlotNumber after link time slots. 在不同的实施方案中,tdfMaximumUplinkTimeSlotNumber的值可能有变化。 In various embodiments, the value of tdfMaximumUplinkTimeSlotNumber may vary. 但是必须谨慎选择以使得对于相关联的TDF STA至少存在一个下行链路时隙可用,以便保证数据服务的QoS。 But it must be chosen carefully so that the TDF STA associated to the presence of at least one downlink slot available, in order to guarantee QoS data services. 此外,可以合并将用于同一方向传送的、由同一TDF STA或AP使用的所有相继的时隙以连续地发送MAC巾贞,从而避免由不必要的转换和保证(guarding)造成的在这些时隙边缘(edge)处的浪费。 Further, in the same direction can be merged for transmission, all the successive time slots used by the same TDF STA or AP to continuously transmit MAC Chen towels, so as to avoid these time caused by the unnecessary conversion and assurance (Guarding) in waste clearance edge (edge) at.

[0068] 在当前的实施方案中,tdfCommonTimeSlotDurat1n是大约300us,其对于TDFSTA在54M模式的一个公共时隙中传送至少一个最大的802.1lPPDU是足够的,并且每个TDF超级帧存在总共62个时隙。 [0068] In the present embodiment, tdfCommonTimeSlotDurat1n about 300us, which is sufficient for at least a maximum transmission TDFSTA 802.1lPPDU in a common slot 54M mode, and there are a total of 62 timeslots per TDF superframe . 在这些时隙中,以此方式,存在20个上行链路时隙和40个下行链路时隙。 In these timeslots, in this way, there are 20 uplink timeslots and 40 downlink timeslots. 当存在20个STA时,可以保证每个TDF STA可以使用680kbps的上行链路数据速率并共享30Mbps (40个连续的时隙)的下行链路数据速率;当存在30个STA时,可以保证每个TDF STA可以使用680kbps的上行链路数据速率并共享22.5Mbps (30个连续的时隙)的下行链路数据速率。 When the presence of 20 STA, may be used to ensure that each of the TDF STA uplink data rate of 680kbps and shared downlink data rate of 30Mbps (40 consecutive time slots); when there are 30 STA, can ensure that each a TDF STA can use the uplink data rate of 680kbps and share 22.5Mbps (30 continuous timeslots) of downlink data rate. tdfMaximumUplinkTimeSlotTimeNumber是30。 tdfMaximumUplinkTimeSlotTimeNumber 30. 最后,作为61个公共时隙和I个同步时隙的总共持续时间的tdfSuperframeDurat1n的值是大约18.6ms,并且对于不同的用途,可以将其定义为不同的值。 Finally, the value of the total duration tdfSuperframeDurat1n 61 as a common slot synchronization time slot and I is about 18.6 ms, and for different uses, can be defined as a different value. 例如,如果仅存在I个TDFSTA,则可以保证它具有4个时隙以实现大约18Mbps的上行链路数据速率和自身的18Mbps (4个连续的时隙)的下行链路数据速率。 For example, if there is only one I TDFSTA, it can be guaranteed that it has 4 timeslots to achieve uplink data rate of about 18Mbps and 18Mbps itself (four consecutive time slots) of downlink data rate. 以此方式,作为9个数据时隙和I个同步时隙的总共持续时间的tdfSuperframeDurat1n 的值是大约4ms。 In this manner, the value tdfSuperframeDurat1n total duration of nine data timeslots and a synchronization time slot I is about 4ms.

[0069] 帧的格式 Format [0069] frame

[0070] 在802.11规范中,存在三个主要的帧类型。 [0070] In the 802.11 specification, three major frame types exist. 使用数据帧以从一个站到另一个站交换数据。 To exchange data using a data frame from one station to another. 依赖于网络可以出现若干不同种类的数据帧。 Depending on the network several different kinds of data frames can occur. 使用控制帧连同数据帧一起来执行区域清理(area clear)操作、信道获取和载波侦测维护(carrier-sensing maintenance)的功能、以及对所接收的数据的肯定应答。 Along with the data frame control frame using a clean up execution region (area clear) operations, channel acquisition and carrier sense maintenance (carrier-sensing maintenance) functions, and positive acknowledgment of received data. 控制帧和数据帧一起工作以从一个站到另一个站可靠地递送数据。 Control and data frames work reliably delivered from one station to the other data together. 更具体地,数据帧交换的一个重要特征是存在应答机制,并且相应地存在用于每个下行链路单播帧的应答(ACK)帧,以便减少由于不可靠的无线信道造成的数据丢失的可能性。 More specifically, an important feature is the presence of a data frame exchange acknowledgment mechanism, and accordingly exist for acknowledgment (ACK) frame every downlink unicast frame, so as to reduce the radio channel due to unreliable data loss caused possibility. 最后,管理帧执行监管功能:使用管理帧以加入和离开无线网络并且从一个接入点向另一个接入点移动关联(associat1n)。 Finally, management frames perform supervisory functions: management frame used to join and leave wireless networks and move from one access point to another access point association (associat1n).

[0071] 然而,在TDF系统中,因为TDF STA被动地等待来自TDF AP的同步帧以发现目标TDF AP,因此,不存在对经典的试探(probe)请求帧和试探响应帧的需求。 [0071] However, in the TDF system, since the STA is passively waiting for TDF synchronization frame from TDF AP to TDF AP finding the target, therefore, no need exists for classical probe (Probe) request frame and a probe response frame. 此外,在同轴电缆中而不是在空中交换帧,因此,不必定义RTS和CTS帧来清理区域并防止隐藏的节点问题,以及不必定义ACK帧来确保递送数据帧的可靠性。 Further, in the coaxial cable instead of the frame in the air exchange, it is not necessary to define the RTS and CTS frames cleaning area and to prevent the hidden node problem, and reliability necessary to define an ACK frame to ensure delivery of data frames.

[0072] 因此,在TDF协议中,我们对于通过同轴电缆情境传送的数据仅仅使用某些有用的802.1lMSDU和MMPDU类型。 [0072] Thus, in the TDF protocol, we coaxial context for data transmission by using only certain useful 802.1lMSDU and MMPDU types. 例如,我们利用数据帧类型中的数据子类型,其被用于封装较上层的数据并且将较上层的数据从一个站传送至另一个站。 For example, we use data subtype in data frame types, which are used for data encapsulation and the upper layer is transmitted from one station to another station upper layer data. 此外,为了应对TDF系统中时钟同步的需要,我们定义了新的种类的管理帧-同步帧;并且为实现上行链路时隙请求、分配和释放的功能,我们定义其它四个种类的管理帧,即,注册请求、注册响应、注销请求以及存活通知。 Further, in response to TDF system clock need to be synchronized, we define a new type of management frame - frame synchronization; and to achieve uplink time slot request, allocation and release functions, we define the other four kinds of management frame that the registration request, a registration response, and survival cancellation request notification.

[0073] 概括而言,我们已经在TDF协议中定义了管理帧类型中的四种新的子类型。 [0073] In summary, we have defined four new sub-type of management frame types in TDF protocol. 以下表格定义了在TDF协议中增加的类型和子类型的有效组合。 The following table defines the increase in TDF protocol valid combinations of type and subtype. 表格I示出了在TDF协议中增加的用于TDF帧的有效的类型和子类型。 Table I shows the type and subtype effective for increasing the TDF frame TDF protocol.

[0074]表格 I [0074] Form I

[0075] [0075]

类型描述子类型描述管理 MW Type description Subtype description Management MW

注册请求^ Registration request ^

注册响应^ Registration Response ^

管理 注销请求^ Management logout request ^

管理 存活通知^ Management survival notice ^

[0076] TDF梓入例稈 [0076] TDF embodiment Zi into stalks

[0077] TDF AP发现以及时钟同步例程 [0077] TDF AP discovery and clock synchronization routine

[0078] TDF协议很大程度上依赖于定时信息向所有节点的分发(distribut1n)。 [0078] TDF protocol relies heavily on the timing information is distributed to all nodes (distribut1n). 首先,TDF STA侦听同步帧以决定是否存在可用的TDF AP。 First, TDF STA listens to determine if there are synchronization frames available TDF AP. 一旦TDF STA进入TDF通信例程,则使用同步帧来适配本地定时器,TDF STA将基于该本地定时器来决定是否轮到其发送上行链路帧。 Once the STA enters TDF TDF communication procedure, is used to adapt the local timer synchronization frame, the STA based on the TDF local timer to decide whether to turn transmits uplink frames. 在任何时间,在同步例程中TDF AP是主机而TDF STA是从机。 At any time, TDF AP synchronization routine in the host machine from the TDF STA. 进一步,如果TDFSTA在预定的阈值时段(其被定义为tdfSynchronizat1nCycle)内还未从相关联的AP接收到任何同步帧,则它将认为该AP已退出服务,并且然后它将停止TDF通信处理并且通过再次侦听同步帧而开始寻找任何TDF AP。 Further, if TDFSTA the predetermined threshold period (which is defined as tdfSynchronizat1nCycle) has not been received from the AP to the associated any synchronization frame, the AP it will have been considered out of service and then it is stopped and the communication processing by the TDF listening synchronization frame again start looking for any TDF AP.

[0079] 在TDF系统中,应将与同一TDF AP相关联的所有STA同步至公共时钟。 [0079] In the TDF system, all should STA and TDF AP associated with the same synchronized to a common clock. TDF AP应周期性地传送被称作同步的特殊帧以同步其本地网络中的调制解调器,所述被称作同步的特殊帧包含TDF AP的时钟信息。 TDF AP shall periodically transmit a special frame synchronization is referred to synchronize its local network modem, referred to as a special frame sync comprises the TDF AP clock information. 每个TDF STA应维护本地定时同步功能(TSF)定时器,以确保它与相关联的TDF AP同步。 Each TDF STA should maintain a local timing synchronization function (TSF) timer to ensure it is synchronized with the associated TDF AP. 在接收到同步帧之后,TDF STA应始终接受帧中的定时信息。 After receiving a synchronization frame, TDF STA always accepts the timing information in the frame. 如果接收TDFSTA的TSF定时器不同于所接收的同步帧中的时间戳,则接收TDF STA应根据所接收的时间戳的值设置其本地定时器。 If the TSF timer is different from the synchronization frame received TDFSTA the received timestamp, the receiving TDF STA shall set its local timer according to the received timestamp value. 进一步,其可以向所接收的定时值增加小的偏置以说明(account for)由收发机进行的本地处理。 Further, a small bias which may increase the received timing value to account (account for) for local processing by the transceiver.

[0080] TDF AP在每个TDF超级帧时间单元应当为传送生成一次同步帧并且在每个TDF超级中贞的Sync时隙中发送该同步中贞。 [0080] TDF AP at every TDF superframe time units should be transmitted synchronization frame is generated once per TDF superframe and Sync infidelity in the transmission time slot synchronization Chen.

[0081] 注册例程 [0081] registration routine

[0082] 图6图示性地描述了整个注册例程。 [0082] FIG. 6 illustrates depicts the entire registration routine. 一旦TDF STA已经从同步帧获取了定时器同步信息,则它将得知何时开始时隙O。 Once the frame synchronization from the TDF STA has acquired timer synchronization information, it will know when the starting slot O. 如果TDF STA与任何TDF AP都不相关联,则它将通过在争用时隙期间向TDF AP发送注册请求帧来尝试向发送同步帧的特定的TDF AP注册,所述争用时隙是TDF超级帧中的第二时隙。 If the STA and TDF is not associated with any TDF AP, it will attempt to register a particular TDF AP transmits a frame synchronization, the contention by transmitting a registration request frame to TDF AP during the contention slot is a slot with the TDF superframe a second slot. 应当谨慎地设计等于tdfCommonTimeSlotDurat1n的争用时隙的持续时间以及注册请求巾贞的结构,以允许在一个争用时隙中发送至少tdfMaximumUplinkTimeSlotNumber个注册请求巾贞。 It should be carefully designed equal tdfCommonTimeSlotDurat1n contention slot duration, and the structure of the registration request Chen towel to allow transmission of at least the tdfMaximumUplinkTimeSlotNumber Chen towel in a registration request contention slot. 基于该设计,将争用时隙划分为tdfMaximumUplinkTimeSlotNumber个相同长度的子时隙。 Based on this design, the contention timeslot is divided into sub-slot the tdfMaximumUplinkTimeSlotNumber same length.

[0083] 只要TDF STA发现目标TDF AP,则其将根据以下方法,在争用时隙中选择一个子时隙以向TDF AP发送注册请求帧: [0083] As long as TDF STA TDF AP find the target, it will be according to the following method to select a sub-timeslot in the contention timeslot to send registration request frame to TDF AP:

[0084] A.每次在TDF STA被分配上行链路时隙时,它将存储被定义为tdfAl1catedUplinkTimeSlot的、所分配的上行链路时隙号码(number),其指示该时隙在整个上行链路时隙池(pool)中的位置并且其范围从I到tdfMaximumUplinkTimeSlotNumber。 [0084] A. TDF STA each time slot is assigned an uplink, it is defined as tdfAl1catedUplinkTimeSlot storage, and the uplink time slot number (number) allocated, which indicates that the entire uplink timeslot timeslots pool (the pool) and in a position range from I to tdfMaximumUplinkTimeSlotNumber.

[0085] B.在TDF STA每次要求上行链路时隙时,TDF AP应当尽其所能地向相同的TDFSTA分配相同的上行链路时隙。 When [0085] B. TDF STA in the uplink time slots per request, TDF AP shall do everything possible in the same TDFSTA allocates the same uplink timeslot.

[0086] C.当决定选择哪一个子时隙来发送注册请求帧时,如果存在存储的tdfAl1catedUplinkTimeSlot值,则TDF STA将把子时隙号码设置为与tdf Al 1catedUplinkTimeSlot相同;如果不存在这样的值,则TDF STA将在tdfMaximumUplinkTimeSlotNumber个可用子时隙中随机地选择一个子时隙。 [0086] C. when determining which sub-time slot selected to transmit the registration request frame, if there is the same value stored tdfAl1catedUplinkTimeSlot, the TDF STA will sub-slot number is set to the tdf Al 1catedUplinkTimeSlot; if there is no such value , the TDF STA will be a sub-slot in the tdfMaximumUplinkTimeSlotNumber randomly selected sub-slots available. TDF STA将在随机选择的子时隙中向TDF AP发送注册请求帧。 TDF STA sends the registration request frame is randomly chosen sub-timeslot to TDF AP.

[0087] 这种操作的目的是减少在许多STA同时启动并且同时尝试向同一TDFAP注册时冲突的机会。 [0087] The purpose of this operation is to reduce the start while many STA and at the same time try to register with the chance of conflict when the same TDFAP.

[0088] 在注册请求帧中,TDF STA将列出在那时它支持的所有数据速率并且还承载诸如所接收的信号的载波/噪声比率之类的某些有用信息。 [0088] In the registration request frame, TDF STA lists all data rates it supports and then also carries some useful information carrier / noise ratio of the received signal as such. 它可以从最高的数据速率开始,利用所支持的不同的数据速率来发送若干相继的注册请求帧。 It can start from the highest data rate, to send several successive registration request frames with different supported data rates. 在发送完帧之后,TDF STA将侦听来自TDF AP的注册响应帧。 After the completion of the transmission frame, TDF STA listens for the registration response frames from the TDF AP.

[0089] 在从TDF STA接收到注册请求帧之后,基于以下方法,TDF AP将在下行链路时隙中向TDF STA返回不同种类的注册响应帧: [0089] After receiving the registration request from the TDF STA frame, based on the following method, TDF AP returns different kinds of registration response frame to the TDF STA in the downlink timeslots:

[0090] A.如果已经分配的上行链路时隙等于tdfMaximumUplinkTimeSlotNumber,则TDFAP将在巾贞主体中放入uplinkTimeSlotUnavailable指不符。 [0090] A. If the already allocated uplink timeslots equal tdfMaximumUplinkTimeSlotNumber, the TDFAP uplinkTimeSlotUnavailable into the match means Zhen napkin body.

[0091] B.如果TDF AP不支持在注册请求管理巾贞中的supportedDataratesSet中所列的任何数据速率,则TDF AP将在巾贞主体中放入unsupportedDatarates指示符。 [0091] B. If TDF AP does not support any data rates listed in the registration request management of the towel supportedDataratesSet in Chen, the TDF AP will be placed in the towel Zhen unsupportedDatarates indicator body.

[0092] C.如果存在可用于分配的上行链路时隙以及TDF AP和TDF STA两者均可以支持的公共的数据速率,则AP将根据STA的注册请求帧中诸如载波/噪声比率之类的某些信息来分配一个上行链路时隙并且选择合适的公共的数据速率,并且然后向TDF STA发送注册响应帧。 [0092] C. If the supported data rate may present a common uplink time slot is available for allocation, and the TDF STA and TDF AP both, the request frame, the AP such as carrier / noise ratio and the like in accordance with the registered STA some information to allocate an uplink time slot and selects a suitable common data rate, and then sends a registration response frame to the TDF STA. 在帧主体中,将包含有关所分配的上行链路时隙以及所选择的数据速率的信息。 In the frame body, including information about the allocated uplink time slot and the data of the selected rate.

[0093] 在成功的注册例程之后,TDF STA和TDF AP将对使用哪一个上行链路时隙和数据速率达成一致。 [0093] After a successful registration routine, TDF STA and TDF AP which will be a time slot and the uplink data using the agreed rate.

[0094]分段(fragmentat1n)/ 解分段例程 [0094] segment (fragmentat1n) / desegmenter routine

[0095] 在TDF协议中,将MSDU传送的时隙持续时间固定为tdfCommonTimeSlotDurat1n。 [0095] In TDF protocol, the timeslot duration for the fixed transmission MSDU tdfCommonTimeSlotDurat1n. 在某些数据速率中,当MSDU的长度大于阈值时,不可能在单个时隙中进行传送。 In some data rates, when the MSDU's length is greater than the threshold value, it can not be transmitted in a single slot. 所以,当用于上行链路传送的数据巾贞长于被定义为tdfFragmentat1nThreshold并且依赖于不同数据速率而变化的阈值时,在调度该数据帧以传送它之前,应当对其进行分段。 Therefore, when the data for towels Fok uplink transmission is defined as tdfFragmentat1nThreshold longer dependent on the different data rates and varies the threshold value, the scheduling data frame prior to transmitting it, it should be segmented. 对于除了最后的分段之外的所有分段,分段帧的长度应当是相等数目的八位字节(Octets)(tdfFragmentat1nThreshold八位字节),最后的分段可以较小。 For all segments except the last segment, the segment length of the frame should be an equal number of octets (Octets) (tdfFragmentat1nThreshold octets), the last segment may be small. 在分段之后,应当将分段后的帧放入待发(outgoing)队列,以传送至TDF AP0可以在TDF帧传送实体中运行该分段例程或者通过使用在TDF巾贞传送实体中动态设置的tdfFragmentat1nThreshold在较上层中运行该分段例程。 After segmentation, the segmented frame should go into the (outgoing) queue for transmission to the TDF in the TDF frame transmission AP0 can run the segment entities in the entity or by using routine dynamic transmission TDF towel Zhen tdfFragmentat1nThreshold segment is set to run the routine in the upper layer.

[0096] 在TDF AP端,所接收的每个分段包含允许从帧的组成分段中重新组装(reassemble)完整帧的信息。 [0096] In the AP-TDF, each segment comprising allowing the received frame segment consisting reassembly (reassemble) the complete frame information. 每个分段的首标包含TDF AP重新组装帧所使用的以下信息: Each segment header contains the following information TDF AP re-binding group used:

[0097] A.巾贞类型(Frame type) [0097] A. Chen towel type (Frame type)

[0098] B.从地址2 (Address 2)字段获得的发送方的地址(Address of the sender) [0098] B. sender address is obtained from 2 (Address 2) an address field (Address of the sender)

[0099] C.目的地地址(Destinat1n address) [0099] C. a destination address (Destinat1n address)

[0100] D.Sequence Control (序列控制)字段:该字段允许TDF AP检查所有进入分段都属于同一MSDU、以及所述分段应当被重新组装成的序列。 [0100] D.Sequence Control (sequence control) field: This field allows to check all incoming segments TDF AP belong to the same MSDU, and should be reassembled into a sequence of the segment. SequenceControl字段内的序列号码对MSDU的所有分段保持相同,而Sequence Control字段内的分段号码对每个分段递+¾ SequenceControl sequence number in field holds for all segments of the same MSDU, while the fragment number within the Sequence Control field of each delivery segment + ¾

>曰ο > Said ο

[0101] E.More Fragments (更多分段)指示符:向TDF AP指示这不是数据巾贞的最后分段。 [0101] E.More Fragments (more fragments) Indicator: this is not the data indicating the last segment of the towel Fok TDF AP. 只有MSDU的最后的或者唯一的(sole)分段应当将该比特设置为零。 Only the last MSDU or only (Sole) segment should have this bit set to zero. MSDU的所有其它分段应当将该比特设置为一。 All other segments of the MSDU shall have this bit set to one.

[0102] TDF AP应当通过按照Sequence Control字段的分段号码子字段的顺序组合分段来重构MSDU。 [0102] TDF AP reconstructs the MSDU by combining should be in the order of segment segment number subfield Sequence Control field. 如果还未接收到More Fragments比特被设置为零的分段,则TDF AP将知道帧还不完整。 If the More Fragments bit has not been received segment is set to zero, then the frame will be aware TDF AP incomplete. TDF AP —接收到More Fragments比特被设置为零的分段,它就知道对于该帧可能接收不到更多的分段了。 TDF AP - receiving the More Fragments bit is set to zero, it knows that the frame may be received for more than a segment.

[0103] TDF AP应当为每个正在接收的帧维护接收定时器。 [0103] TDF AP shall maintain each frame received timer being received. 还存在tdfMaxReceiveLifetime属性,其指定接收一巾贞所允许的最大时间量。 There tdfMaxReceiveLifetime attribute, which specifies the maximum amount of time allowed for a towel Chen received. 在接收MSDU的第一个分段时启动接收定时器。 Receiving timer started upon reception of the first fragment of the MSDU. 如果接收巾贞定时器超过tdfMaxReceiveLifetime,则TDF AP丢弃该MSDU的所有接收的分段。 If the receiving timer exceeds towel Chen tdfMaxReceiveLifetime, all segments of the AP discards the received MSDU is TDF. 如果在超过被管理的(directed) MDSU的tdfMaxReceiveLifetime之后接收到该MSDU的附加的分段,则应当丢弃这些分段。 If the received additional segment of the MSDU after tdfMaxReceiveLifetime exceed managed (directed) MDSU, then the segments should be discarded.

[0104] 上行链路传送例程 [0104] uplink transmission procedure

[0105] 在从TDF AP接收到注册响应帧之后,TDF STA将分析帧主体以查看是否它被给予了上行链路时隙。 [0105] After receiving the registration response frame to the TDF AP, TDF STA analyzes the frame body to see if it was given uplink time slot. 如果没有被给予上行链路时隙,它将停止一会并且随后申请上行链路时隙。 If not given uplink time slot, it will stop and will then apply a uplink time slot. 如果被给予了上行链路时隙,它将使用在注册响应帧中指示的数据速率来在所指派的时隙期间开始传送上行链路业务量。 If given uplink time slot, it will use the data rate indicated in the registration response frame to start transmitting uplink traffic during the assigned timeslot.

[0106] 在所指派的时隙期间开始上行链路传送时,如果在TDF STA的待发队列中存在至少一个待发帧,则TDF STA将向TDF AP发送其待发队列中的第一帧。 When [0106] during the time slot assigned uplink transmission start, if there is at least one outgoing frame in the outgoing queue TDF STA, the TDF STA sends its outgoing frames queues first TDF AP . 在这之后,TDF STA将检查第二上行链路帧的长度并且评估是否可能在所指派的时隙的剩余持续时间期间内发送第二上行链路帧。 After that, TDF STA checks the second uplink frame's length and evaluate the possibility of transmitting a second uplink frame during the remaining duration in the assigned timeslot. 如果不能,则它将停止上行链路传送例程并且等待在下一TDF超级帧期间内在指派的时隙中发送第二上行链路帧。 If not, it stops the uplink transmission procedure and waits to send a second uplink frame during a period from the next TDF superframe assigned time slots. 如果可以,则它将立即向目的地TDF AP发送第二帧。 If so, it will immediately send a second frame to the destination TDF AP. 发送例程将以此方式继续运行,直到所指派的时隙结束、或者不存在任何要传送的上行链路帧。 In this way the transmission routine will continue to run until the end of the assigned time slots or frames to transmit any uplink does not exist.

[0107] 下行链路传送例程 [0107] downlink transmission routine

[0108] 在整个TDF通信例程中,总的下行链路时隙数目可能由于改变的相关联的STA数目而动态地改变。 [0108] In the entire TDF communication procedure, the total number of downlink timeslots may change dynamically due to the changing number of associated STA. 当TDF AP准备向相关联的STA发送帧时,它将剩余的下行链路时隙中剩下的时间与用于使用所商定的(agreed)数据速率来传送特定的下行链路帧所需的持续时间进行比较。 When the TDF AP prepares to send frames to the STA associated with it remaining downlink slot to transmit the rest of the time frame required for the specific downlink and using the agreed (Agreed) data rate duration of the comparison. 然后基于该结果,它将决定是否应当在该TDF超级帧期间以特定的数据速率来传送该帧。 Then based on the result, it should be decided whether specific data rate to transmit the frame during the superframe TDF. 此外,TDFAP不需要对任何下行链路帧进行分段。 Further, TDFAP need not be segmented any downlink frame.

[0109] 当对于相关联的STA而言不是发送上行链路业务量的时间时,STA将总是侦听信道以便发现以它为目标的可能的下行链路帧。 [0109] When the associated STA to send uplink traffic in terms of amount than time, will always STA listens to the channel downlink frame may be found in its targeted.

[0110] 注销例程 [0110] logout routines

[0111] 如图7中所示,如果TDF STA决定退出TDF通信例程,它将在其上行链路时隙期间内向相关联的TDF AP发送注销请求帧,以便通知TDF AP释放为它分配的上行链路时隙资源。 [0111] As shown in FIG. 7, if the STA decides to exit the TDF TDF communication procedure, it will be associated with the TDF AP transmits a deregistration request within the frame during its uplink timeslot, in order to inform TDF AP to release the allocated for its uplink slot resource. 在接收到注销请求帧之后,TDF AP将使为该TDF STA所指派的上行链路时隙空余(free)并且将其放入空余时隙池供将来使用。 After receiving the unregistration request frame, TDF AP will spare for the uplink time slot (free) TDF STA assigned time slot and placed in the spare pool for future use.

[0112] 存活通知例程 [0112] survival notification routine

[0113] 现在参照图8,为了在TDF STA突然崩溃或者关闭时尽可能快地释放资源,TDF STA必须通过在其上行链路时隙时段期间内周期性地向TDF AP发送存活通知帧来报告其存活性。 [0113] Referring now to FIG. 8 report, the TDF STA for sudden collapse or release the resources as soon as possible when closed, must survive TDF STA by transmitting the notification frame to the TDF AP during its uplink timeslot period periodically its viability. 如果在被命名为tdfAliveNotificat1nCycle的预定的阈值时段内不存在任何存活通知,则相关联的TDF AP将认为TDF STA已退出了服务,并且然后释放为该TDF STA分配的上行链路时隙,就如同从该TDF STA接收到注销请求帧一样。 If any notification is not present in the survival named tdfAliveNotificat1nCycle predetermined threshold period, the associated TDF AP that will service the TDF STA has exited, and then releases the uplink timeslot allocated for the TDF STA, like TDF STA received from the cancellation request frame to the same.

[0114] 为了确保具有多速率能力的TDF STA的并存和互操作性,该规范定义了所有站都应当遵循的一组规则: [0114] In order to ensure the TDF STA multi-rate capability of coexistence and interoperability, the specification defines a set of rules that all stations should follow:

[0115] A.应当以TDF基本速率集合中的最低速率来传送同步帧,使得这些同步帧可被所有的STA理解。 [0115] A. TDF basic rate should be set at the lowest rate of transmit synchronization frames so that these frames can be synchronized to all the STA understood.

[0116] B.应当在通过注册机制选择的所支持的数据速率上发送具有目的地单播地址的所有帧。 [0116] B. All frames with destination should transmit unicast address on the data rates supported by the selected registration mechanism. 没有站将以接收站不支持的速率来传送单播帧。 The receiving station will not stand unsupported rate to transmit the unicast frame.

[0117] C.应当以TDF基本速率集合中的最高速率来传送具有目的地多播地址的所有帧。 [0117] C. TDF basic rate should be set at the maximum rate to transmit all frames with destination multicast address.

[0118] 以下是图9-20的描述。 [0118] The following is a description of FIGS. 9-20. 至少图9-20描述了例如可以用于图1-8描述的一个或多个系统的实施方案。 FIG described e.g. at least 9-20 or more embodiments of a system may be used to describe FIGS. 1-8. 当然,图9-20的实施方案的特征和方面可以用于其它系统。 Of course, features and aspects of the embodiments 9-20 may be used in other systems.

[0119] 如上所述,TDF协议可以替换常规的802.1IDCF (分布式协调功能)或者PCF (点协调功能)机制。 [0119] As described above, TDF protocol can replace the conventional 802.1IDCF (distributed coordination function) or the PCF (point coordination function) mechanism. 这样的系统可以利用广泛部署的WLAN(802.11)网络以及可能正在变得越来越成熟和廉价的WLAN芯片组的优势。 Such systems can take advantage of widely deployed WLAN (802.11) networks and are likely to become increasingly sophisticated and inexpensive advantage of WLAN chipsets. 该系统通过在电缆网络中传送WLAN信号而为CATV网络的双向通信提供了成本高效的解决方案,即便针对在空中环境中而不是在电缆网络中进行传送/接收而创建了WLAN协议。 The system provides a cost effective solution for WLAN signal transmitted through bidirectional communication in a cable network is a CATV network and, even for rather than transmitted in a cable network environment, the air / reception of WLAN protocols created. 在该系统中,TDF协议的基本接入方法是TDMA,其通过将同一信道划分为不同时隙而允许多个用户共享该同一信道。 In this system, the fundamental access method of the TDF protocol is TDMA, by the same channel is divided into different time slots and allows multiple users to share the same channel. 每个TDF站使用TDF超级帧中、由TDF AP (接入点)指派的该TDF站自身的时隙,一个接一个地快速相继地传送上行链路业务量。 Each station uses TDF TDF superframe, the TDF by the TDF the AP (Access Point) station itself assigned slot, one after the other in rapid succession for uplink traffic transmission. 对于下行链路业务量,这些站共享信道(例如,如在图5的TDF超级帧中所示的),并且通过将这些帧中的目的地地址信息与它们的地址进行比较来选择以它们为目标的帧。 For downlink traffic, the stations shared channel (e.g., as shown in the TDF superframe of FIG. 5), and the destination address information in the frames with their address selected by comparing them as frame of the goal.

[0120] 参照图9,示出了典型的TDF网络900。 [0120] Referring to FIG. 9, there is shown a typical TDF network 900. 网络900提供了从用户家庭910和920到因特网(或者其它资源或者网络)930的连接。 Network 900 provides a connection from the user's home 910 and 920 to the Internet (or other resources or network) 930. 用户家庭910和920通过电缆系统950连通接入点(AP) 940。 User homes 910 and 920 (AP) 940 in communication system 950 through the cable access point. AP 940可以位于例如家庭910和920的邻近处,或者位于包括家庭(在该情形下,公寓)910和920的公寓建筑物中。 AP 940 may be located adjacent to the 910 and 920, for example, home, or in apartment buildings including domestic and 920 910 (in this case, apartment). 例如,可以由电缆运营商拥有AP 940。 For example, you can have AP 940 by the cable operator. AP 940通过以太网网络970被进一步耦合到路由器960。 AP 940 970 is further coupled to the router 960 via the Ethernet network. 路由器960还被耦合到因特网930。 Router 960 is also coupled to the Internet 930.

[0121] 如应当清楚的,术语“耦合”指的是直接连接(没有中介组件或者单元)和间接连接(一个或多个中介组件和/或单元)两者。 [0121] As should be clear, the term "coupled" refers to direct connections (without an intervening components or units) and indirect connections both (one or more intervening components and / or units). 这样的连接可以是例如有线的或无线的,以及永久的或暂时的。 Such a connection may be, for example, wired or wireless, and permanent or temporary.

[0122] 用户家庭910和920可以具有各种不同的配置,并且每个家庭可以被不同地进行配置。 [0122] user homes 910 and 920 may have various configurations, and each home may be differently configured. 然而,如在网络900中所示,用户家庭910和920每个分别包括站(被称作调制解调器)912和922。 However, as shown in the network 900, the user homes 910 and 920 each include a station (referred to as a modem) 912 and 922. 调制解调器912、922分别通过以太网918、928被耦合到第一主机(主机1)914,924和第二主机(主机2)916,926ο每个主机914、916、924和926例如可以是计算机或者其它处理设备或者通信设备。 Modems 912, 922 are coupled to a first host (Host 1) 914,924 and a second host (host 2) 916,926ο Each host 914, 916 and 926 may be, for example, a computer or other processing device via Ethernet 918,928 or a communication device.

[0123] 存在网络900可以允许多个主机(例如,914、916、924和926)连接到路由器960的各种方法。 [0123] presence network 900 may allow multiple hosts (e.g., 914, 916 and 926) connected to the router 960 of the various methods. 以下讨论四种实施方案,为了简单,仅仅考虑调制解调器912以及主机914和916。 The following embodiments discuss four, for simplicity, considering only the modem 912 and hosts 914 and 916.

[0124] 在第一方法中,调制解调器912充当另一路由器。 [0124] In the first method, the modem 912 acts as another router. 通过主机914和916的IP地址来标识主机914和916,并且调制解调器912将来自主机914和916的IP分组路由到路由器960。 To identify the host 914 and the host 916 through the IP address 914 and 916, and 912 from the modem host 914 and routing IP packets to the router 916 960. 该方法I典型地需要调制解调器912运行路由器软件,这需要额外的存储器和增加的处理能力。 I The method typically requires the modem 912 to run router software, which requires additional memory and increased processing power.

[0125] 在第二方法中,调制解调器912充当桥接器(bridge)。 [0125] In the second method, the modem 912 acts as a bridge (bridge). 调制解调器912和AP 940使用标准的无线分布式系统(WDS)机制来输送层2分组至路由器960。 The modem 912 and the AP 940 use the standard wireless distribution system (WDS) mechanism to convey layer 2 packets to the router 960. 主机914和916由其介质接入控制(MAC)地址来标识。 Host 914 and 916 by a medium access control (MAC) address to identify. 该方法2是802.11标准的一部分并且可以同时服务多个主机。 This method is part of the 802.11 standard and can serve multiple hosts simultaneously. 然而,不是所有的AP和调制解调器都支持WDS,并且那些支持WDS的AP和调制解调器经常仅具备有限的支持。 However, not all modems support the AP and WDS, and those who support the WDS AP and modems often have only limited support. 例如,对于某些AP和调制解调器,你不能将W1-Fi保护接入(WPA)与WDS—起使用,而这可能引入安全性问题。 For example, for some of the AP and a modem, you can not W1-Fi Protected Access (WPA) and WDS- used together, which could introduce security issues.

[0126] 在第三方法中,调制解调器912使用MAC伪装(masquerade)来将以太网分组的源MAC地址(源是主机914和916之一)改变为其自身的MAC地址。 [0126] In a third method, the modem 912 uses MAC masquerade (Masquerade) packet to the Ethernet source MAC address (source is one of a host 914 916) to change its own MAC address. 因此从路由器960的角度,路由器960仅仅看见调制解调器912。 Therefore, from the perspective of the router 960, the router 960 only sees the modem 912. 利用该方法,调制解调器912 —次仅仅能服务一个主机。 With this method, the modem 912 Sub - can only serve one host.

[0127] 在另一方法中,调制解调器912使用以下进一步详细描述的封装。 [0127] In another packaging method, the modem 912 uses the following described in further detail. 以上方法中的每一个具有优点和缺点,并且这些优点和缺点可能依赖于实施方案而变化。 Each has advantages and disadvantages, and these advantages and disadvantages may vary dependent on the embodiment of the above methods. 然而,封装方法提供了特定的优点,这些特定的优点在于该封装方法通常通过不需要调制解调器运行路由器软件而允许调制解调器更简单,其典型地不引入安全性问题,并且可以一次服务多个主机。 However, the encapsulation method provides particular advantages, the particular advantage that the encapsulation method usually allows simpler modem, which does not typically introduce security problems and can serve multiple hosts by not requiring a modem run router software.

[0128] 另外,该封装方法通过使用单个WLAN分组从主机传送每个分组,避免了与前三种方法相关联的大的开销。 [0128] Further, the encapsulation method by using a single WLAN packet transmitting each packet from a host, to avoid a large overhead associated with the previous three methods. 从而,前三种方法导致用于从主机转移的每个分组的WLAN分组的开销,并且对应地减少了吞吐量。 Thus, for the first three methods lead to WLAN overhead of each packet transferred from the host packet, and correspondingly reduces the throughput. 在TDF环境中典型地加重了这种低效率。 In the TDF environment typically aggravated by inefficiency. 在TDF环境中,时隙的持续时间是固定的,并且时隙被设计为在一个时隙中仅仅允许传送一个WLAN分组。 In the TDF environment, the duration of time slots is fixed, and the timeslot is designed to allow only one slot transmitting a WLAN packet. 从而,在每个时隙中仅仅可以传送一个主机分组。 Thus, a host may transmit a packet only in each time slot.

[0129] 相应地,该封装方法通常提供各种优点中的一种或者多种。 [0129] Accordingly, the encapsulation method usually provide one or more of the various advantages. 例如,这样的优点包括:更简单的路由器设计和操作、增加的安全性、服务多个主机,以及增加的效率和吞吐量。 For example, such benefits include: a simpler router design and operation, increased security, serving multiple hosts, and increased efficiency and throughput.

[0130] 总之,该封装方法的至少一个实施方案包括将多个以太网分组封装为一个WLAN分组。 [0130] In summary, at least one embodiment of the packaging method comprises a plurality of Ethernet packets encapsulated WLAN packet. 该WLAN分组将与TDF时隙所允许的最大长度一样大。 The WLAN packet is as large as the maximum length allowed by the TDF timeslot. AP (例如,另一调制解调器)将WLAN分组解封装为各个以太网分组并且将它们发送给路由器。 AP (e.g., another modem) decapsulates the WLAN packet for each Ethernet packets and sends them to the router. 对于反方向上的通信,调制解调器将解封装WLAN分组并且将各个以太网分组发送给(多个)主机。 For communication in the reverse direction, a modem and WLAN packet decapsulated packet to the host (s) of each Ethernet.

[0131] 参照图10,图例1000包括多个调制解调器(其中的两个被明确地示出)以及AP。 [0131] Referring to FIG 10, illustration 1000 includes a plurality of modems (two of which are explicitly shown) and AP. 该图例包括调制解调器#1 1010、调制解调器#N 1020以及AP 1030,调制解调器1010和1020中的每一个通过电缆网络1040耦合到AP 1030。 The illustration includes a modem # 1 1010, a modem #N 1020, and AP 1030, modem 1010 and 1020 coupled each via cable network 1040 to the AP 1030. 另一实施方案对于每个调制解调器使用分离的电缆网络。 Another embodiment uses a separate cable networks for each of the modems.

[0132] 调制解调器1010和1020、以及AP 1030包括相同名称的功能组件,尽管某些外部连接不同并且组件本身对于调制解调器和AP执行不同的功能。 [0132] modems 1010 and 1020, and the AP 1030 include functional components of the same name, although some of the external connections are different and the components themselves perform different functions for a modem and AP. 从而,提供公共的单元来用作调制解调器和AP两者。 Thus, providing a common unit serves as both the modem and the AP. 然而,应清楚可以为调制解调器和AP设计不同的单元,该不同的单元仅仅分别执行调制解调器或AP所需的那些功能。 However, it should be clear that the modem can be different design elements and the AP, only the different units are required to perform those functions or modem AP.

[0133] 调制解调器1010包括:本地应用层1011,之后的TCP/IP层1012,之后的桥接器1014。 [0133] Modem 1010 includes: local applications layer 1011, followed by a TCP / IP layer 1012, the bridge 1014 following. 桥接器1014耦合到以太网接口1015、分组聚集/解聚集模块(PADM) 1016以及WLAN接口1Ht5PADM 1016还耦合到WLAN接口1017。 Bridge 1014 is coupled to an Ethernet interface 1015, a packet aggregation / deaggregation module (PADM) 1016, and is also coupled 1Ht5PADM 1016 WLAN interface to a WLAN interface 1017. 以太网接口1015耦合到以太网网络1052,以太网网络1052耦合到第一主机(主机I) 1054和第二主机(主机2) 1056。 Ethernet interface 1015 is coupled to an Ethernet network 1052, an Ethernet network 1052 is coupled to a first host (host I) 1054 and a second host (host 2) 1056.

[0134] 调制解调器1020类似于调制解调器1010。 [0134] Modem 1020 is similar to the modem 1010. 然而,调制解调器1020耦合到以太网网络1062,以太网网络1062耦合到第一主机(主机I) 1064和第二主机(主机2) 1066。 However, the modem 1020 is coupled to an Ethernet network 1062, an Ethernet network 1062 is coupled to a first host (host I) 1064 and a second host (host 2) 1066. 将调制解调器1020的组件示为与调制解调器1010的组件相同。 The modem 1020 is the same as the components shown in the assembly of the modem 1010. 然而,应清楚,在建立调制解调器1010和1020以及在调制解调器1010和1020操作时,例如各种配置参数将不同。 However, it should be clear that, in establishing the modem 1010 and 1020 as well as 1010 and 1020 when the modem is operating, for example, various different configuration parameters.

[0135] AP 1030包括:本地应用层1071,之后的TCP/IP层1072,之后的桥接器1074。 [0135] AP 1030 include: local applications layer 1071, followed by the TCP / IP layer 1072, the bridge 1074 following. 桥接器1074耦合到以太网接口1077、PADM 1076以及WLAN接口1075。 Bridge 1074 is coupled to an Ethernet interface 1077, PADM 1076, and a WLAN interface 1075. PADM 1076还耦合到WLAN接口1075。 PADM 1076 is also coupled to the WLAN interface 1075. 以太网接口1077耦合到以太网网络1082,以太网网络1082继而耦合到路由器1090。 Ethernet interface 1077 is coupled to an Ethernet network 1082, an Ethernet network 1082 is in turn coupled to the router 1090. WLAN接口1017和1075通过电缆网络1040彼此通信地耦合。 10751040 1017 WLAN interface and communicatively coupled to each other via a cable network.

[0136] 路由器1090进一步耦合到因特网1095。 [0136] router 1090 is further coupled to the Internet 1095. 从而,在主机1054、1056、1064、1066以及因特网1095之间存在连接。 Thus, there is a connection between the host and the Internet 1095 1054,1056,1064,1066.

[0137] 各种本地应用层(1011,1071)是用于运行本地应用程序并且与架构中的其它层联接的标准层。 [0137] various local application layers (1011,1071) are standard layers for running local applications and coupled with other layers of the architecture. 各种TCP/IP层(1012,1072)是用于运行TCP/IP并且提供典型地由这样的层提供的服务(包括与架构中的其它层联接)的标准层。 Various TCP / IP layers (1012,1072) for running TCP / IP and provides services typically provided by such layers (including other layers in the schema coupling) standard layer. 各种以太网接口(1015,1077)是用于联接至以太网网络或者从以太网网络联接的标准单元。 Various Ethernet interface (1015, 1077) is coupled to an Ethernet network or a standard cell from the Ethernet network coupled. 这样的接口1015、1077传送并接收以太网分组并且根据以太网协议操作。 Such interfaces 1015, 1077 transmit and receive Ethernet packets and according to the Ethernet protocol.

[0138] 各种WLAN接口(1017,1075)是用于联接至WLAN网络或者从WLAN网络联接的单元。 [0138] various WLAN interface (1017, 1075) is coupled for coupling to a WLAN from the WLAN network or network element. 这样的接口1017、1075传送并接收WLAN分组并且根据WLAN协议操作。 Such interfaces 1017, 1075 transmit and receive WLAN protocol packets and operate according to the WLAN. 然而,在图例1000中,WLAN接口1017,1075实际耦合至电缆网络1040而不是使用无线通信。 However, in the legend 1000, WLAN interfaces 1017, 1075 are coupled to the actual cable network 1040 using wireless communication instead.

[0139] 可以以例如诸如用于计算机的插入卡(plug-1n card)之类的硬件来实施以太网和WLAN接口1015、1017、1075以及1077。 [0139] may be implemented in hardware, for example, as a computer plug-in card (plug-1n card) or the like to implement Ethernet and WLAN interfaces 1015,1017,1075 and 1077. 还可以大部分以软件来实施该接口,该软件是诸如使用由处理设备实施的指令来执行接口的功能的程序。 Most may also be implemented in software interface, such as using the software program is executed by the instruction processing apparatus according to the functions of the interface. 这样的接口将通常包括用于接收实际信号(例如,连接器)和用于缓冲所接收的信号(例如,传送/接收缓冲器)的部分,并且典型地包括用于处理信号的部分(例如,信号处理芯片的全部或者一部分)。 Such interface typically comprises a means for receiving the actual signal (e.g., connectors) and a signal (e.g., transmitting / receiving buffer) received portion of the buffer, and typically includes a portion for processing signals (e.g., all or part of the signal processing chip).

[0140] 各种桥接器(1014,1074)是在以太网接口和WLAN接口之间转发分组的单元。 [0140] various bridges (1014, 1074) to forward packets between an Ethernet interface and a WLAN interface unit. 可以用软件或者硬件实施桥接器,或者桥接器可以仅仅是逻辑实体。 Embodiments may be software or hardware bridge, or a bridge may only be a logical entity. 对于桥接器的标准的实施方案包括处理设备(诸如集成电路)或者在处理设备(诸如运行桥接器软件的处理器)上运行的一组指令。 For the standard bridge embodiment comprises a processing device (such as an integrated circuit) or a set of instructions running on a processing device (such as a processor running bridge software).

[0141] PADM 1016和1076执行各种功能,包括在以下进一步描述的分组封装和解封装。 [0141] PADM 1016 and 1076 perform a variety of functions, including packet encapsulation and decapsulation is further described below. 可以以例如软件、硬件、固件或者某种组合来实施PADM 1016和1076。 May be software, hardware, firmware, or some combination PADM 1016 and 1076. 软件实施方案包括例如诸如在处理设备上运行的程序之类的一组指令。 For example software embodiment includes a set of instructions such as a program running on a processing device. 硬件实施方案包括例如诸如专用IC(ASIC)之类的专用芯片。 Hardware implementation comprises a dedicated chip, for example, such as application specific IC (ASIC) or the like.

[0142] 参照图11,处理1100描述了从主机向调制解调器转移分组的处理。 [0142] Referring to FIG. 11, process 1100 describes the processing of transferring a packet from the host to the modem. 进一步从调制解调器传送该分组供AP接收,并且供最后递送至路由器并然后到最终目的地。 Further from the modem for transmitting the packet received by the AP, and for eventual delivery to a router and then to the final destination. 该处理1100还被称作上行链路传送处理。 This process 1100 is also referred to as an uplink transmission process.

[0143] 处理1100包括使用例如在本申请早先描述的处理来将调制解调器连接至AP (1110)。 [0143] The process 1100 includes the connection processing using, for example as described earlier in the present application the modem to AP (1110). 这样的处理可以包括例如包含验证和关联操作的标准WLAN协议。 Such processing may include, for example, standard WLAN protocols include authentication and association operations.

[0144] 然后,处理1100包括:一个或多个主机向调制解调器发送一个或多个分组(1120),以及调制解调器接收所发送的(多个)分组(1130)。 [0144] Then, the process 1100 comprises: one or more hosts sending one or more packets (1120) to the modem, and the packet (s) (1130) receives the transmitted modem. 注意:发送分组供路由器接收,该路由器将(多个)分组递送至最终的(多个)目的地。 Note: a router for receiving the transmission packet, the router (s) to the final delivery of packets (multiple) destinations. 在图10的实施方案中,调制解调器1010经以太网接口1015通过以太网网络1052从主机1054和1056中的一个或多个中接收所发送的分组。 In the embodiment of Figure 10, the modem 1010 through the network 1052 Ethernet packet 1015 received from the host 1054 and 1056 in one or more transmitted via Ethernet.

[0145] 调制解调器然后确定通过WLAN接口要发送(多个)分组(1140)。 [0145] modem then determines the interface to be transmitted through the WLAN packet (s) (1140). 调制解调器通过识别经WLAN接口接入路由器(作为相反的,通过识别经另一接口接入路由器(未示出))来做出该确定(1140)。 Identify the WLAN interface via modem access router (as the opposite, by identifying the access router via another interface (not shown)) make this determination (1140). 在图10的实施方案中,调制解调器1010向桥接器1014发送所接收的(多个)分组,并且桥接器1014做出该确定(1140)。 In the embodiment of Figure 10, the modem sends a bridge 10101014 received packet (s), and the bridge 1014 makes this determination (1140).

[0146] 然后,调制解调器为路由器封装包括一个或多个所接收的分组的多个分组(1150)。 [0146] Then, the modem includes a plurality of packet router package (1150) the one or more received packets. 封装(1150)可以包括从多个主机,例如从图10的实施方案中的主机1054和1056接收的分组。 Package (1150) from the plurality of hosts may include, for example, from the host 1054 in the embodiment of FIG. 10 and 1056 received packets. 此外,封装可以包括在操作1130中接收的(多个)分组和早先接收并被存储在队列中的分组。 In addition, the package may include a packet (s) received in operation 1130 and packets received earlier and stored in the queue.

[0147] 在不对多个分组进行封装的实施方案中,该实施方案可以通过单独对每个以太网分组进行封装,使用桥接器将以太网分组映射到各个WLAN分组。 [0147] embodiments are not encapsulated in the plurality of packets, this embodiment may be packaged separately by each Ethernet packet, the bridge used for mapping Ethernet packets to individual WLAN packets. 这种封装例如可以包括将全部以太网分组作为WLAN分组的数据部分并且添加附加的WLAN首标。 Such package may comprise, for example, the entire Ethernet packet as a data portion of the WLAN packet and add an additional WLAN header.

[0148] 此外,不对多个分组进行封装的实施方案甚至不需要对各个以太网分组进行封装。 [0148] Further, not a plurality of packets need not even be embodiments of the package for each Ethernet packet encapsulated. 而且,这样的实施方案例如可以通过利用WLAN首标替换以太网首标并且通过可选地添加一个或者多个附加字段来将各个以太网分组变换为各个WLAN分组。 Furthermore, such embodiments may be, for example, by replacing WLAN header Ethernet header and by optionally adding one or more additional fields to the respective Ethernet packets into individual WLAN packets use.

[0149] 例如,参照图12,示出了接收包括以太网首标1220和数据部分1230的以太网分组1210的变换1200。 [0149] For example, referring to FIG. 12, a transformation 1200 is shown receiving an Ethernet Ethernet header 1220 and data portion 1230 of the packet 1210. 变换1200产生包括WLAN首标1250、数据部分1230以及帧校验序列(FCS) 1260 的WLAN 分组1240。 Generating transform 1200 comprises a WLAN header 1250, data part 1230 and a frame check sequence (FCS) 1260 1240 The WLAN packet.

[0150] 然而,实施操作1150包括将多个以太网分组封装为单个WLAN分组。 [0150] However, the implementation of the operation 1150 includes encapsulating multiple Ethernet packets into a single WLAN packet. 在图13中图示了操作1150的一个实施方案。 It illustrates the operation of one embodiment 1150 in FIG. 13.

[0151] 参照图13,变换1300接收包括以太网分组1310、1312和1314的多个以太网分组,并且产生单个WLAN分组1318。 [0151] Referring to FIG. 13, it includes a transformation 1300 receives multiple Ethernet packets Ethernet packets 1310, 1312 and 1314, 1318 and produces a single WLAN packet. 以太网分组1310、1312和1314中的每一个分别包括以太网首标1320、1322和1324,以及分别包括数据部分1326、1328和1329。 Ethernet packets 1310, 1312 and 1314 each include an Ethernet header 1320, 1322 and 1324, respectively, and includes a data portion 1326, 1328 and 1329.

[0152] 以太网分组1310、1312和1314可以源自同一主机,或者不同的主机。 [0152] Ethernet packets 1310, 1312 and 1314 may be derived from the same host or different hosts. 此外,尽管是为发送至路由器而封装以太网分组1310、1312和1314,但以太网分组1310、1312和1314的最终目的地可以不同。 Furthermore, although the package is sent to the router and the Ethernet packets 1310, 1312 and 1314, but the Ethernet packets 1310, 1312 and 1314 may be different from the final destination. 例如,以太网分组1310、1312和1314中的每一个可以去往一个或多个主机正在与之通信(或者试图通信)的不同的因特网站点。 For example, Ethernet packets 1310, 1312 and may be to one or more hosts are communicating with different Internet sites (or attempt to communicate with) each of 1314.

[0153] 变换1300被示为包括两个中间操作。 [0153] transform 1300 is shown as including two intermediate operations. 然而,其它实施方案不执行任何中间操作,并且还有其它实施方案执行更多的中间操作。 However, other embodiments do not perform any intermediate operations, and still other embodiments perform more intermediate operations.

[0154] 第一中间操作将以太网分组变换为扩展的以太网分组。 [0154] The operation of the first intermediate Ethernet packets into extended Ethernet packets. 以太网分组1310、1312和1314被分别变换为扩展的以太网分组1330、1332和1334。 Ethernet packets 1310, 1312 and 1314 are respectively converted into extended Ethernet packets 1330, 1332 and 1334. 在变换1300中,全部以太网分组1310、1312和1314分别被包括作为扩展的以太网分组1330、1332和1334的数据部分1336、1338和1340。 In the transformation 1300, the entire Ethernet packets 1310, 1312 and 1314 are included as data of the extended Ethernet packets 1330, 1336, 1338, 1334 and 1340 portions. 扩展的以太网分组1330、1332和1334还分别包括可选的首标1342、1343和1344,以及可选的尾标(tail) 1346、1347和1348。 Extended Ethernet packet 1330, and 1334 also include an optional header 1342, 1343 and 1344, and optionally the tail (tail) 1346,1347 and 1348. 首标1342、1343和1344以及尾标1346、1347和1348可以包括各种不同的信息段,无论这些信息段对于首标/尾标是不是典型的,诸如,例如,分组号码(packets numbers)、应答和重新传送信息、源和/或目的地地址、以及错误校验信息。 1342, 1343, 1344 and header 1346, 1347 and 1348 and the tail may include various pieces of information, whether these pieces of information to the header / trailer is not typical, such as, for example, a packet number (packets numbers), and re-transmitting response information source and / or destination addresses, and error checking information.

[0155] 第二中间操作包括将扩展的以太网分组变换为单个的“WLAN中的以太网”(Ethernet-1n-WLAN(EIW))分组1350。 [0155] The second intermediate operation includes transforming the extended Ethernet packets into a single "WLAN Ethernet" (Ethernet-1n-WLAN (EIW)) packet 1350. EIW分组1350包括扩展的以太网分组中的每一个的数据部分。 EIW packet 1350 includes a data portion of each of the extended Ethernet packet. 示出了两种可能的变换。 It illustrates two possible transformations. 实线箭头1370图示了第一种可能的变换以及虚线箭头1375图示了第二种可能的变换。 Solid arrows 1370 illustrates a first possible conversion and dashed arrows 1375 illustrates a second possible conversion.

[0156] 如变换1300中的实线箭头1370所示,数据部分1352、1353和1354分别对应于被包括的扩展的以太网分组1330、1332和1334。 [0156] The conversion of the solid arrows 1300, 1352, 1353 and 1354, respectively, the data portion corresponding to the included extended Ethernet packets 1330, 1332, 1370 and 1334. EIW分组1350进一步包括可选的首标1356 (也被称作EIW首标)和可选的尾标1358,其可以包括例如之前对于首标/尾标描述的任何信息。 EIW packet 1350 further includes an optional header 1356 (also referred to EIW header) and an optional tail 1358, which may include any information, for example, prior to the header / trailer as described.

[0157] 如果没有首标或尾标被插入到扩展的以太网分组,则扩展的以太网分组的数据部分(例如,数据部分1336)变成EIW分组的数据部分(例如,数据部分1352)。 [0157] If no header or tail is inserted into the extended Ethernet packet, the extended Ethernet packet data part (e.g., the data portion 1336) becomes the data portion of the EIW packet (e.g., the data portion 1352). 此外,即使将首标或尾标插入到扩展的以太网分组,实施方案在形成EIW分组时也可能丢弃/忽略首标或尾标。 Further, even if a header or tail is inserted into the extended Ethernet packet, an implementation may discard / ignore the header or trailer when forming the EIW packet. 在这些情形中的任何一种情形下,扩展的以太网分组的数据部分和EIW分组的数据部分具有相同的数据。 In these situations either case, the data portion of the extended Ethernet packet portion and EIW packet having the same data.

[0158] 如变换1300中的虚线箭头1375所示,数据部分1352、1353和1354不必分别对应于扩展的以太网分组1330、1332和1334。 [0158] As shown in dashed arrows in the transformation 1375 1300, 1352, 1353 and 1354 do not have a data portion corresponding to the extended Ethernet packets 1330, 1332 and 1334. 也就是说,EIW分组的数据部分不必包含全部扩展的以太网分组。 In other words, the data portion of the EIW packet does not have to contain all the extended Ethernet packet. 如虚线箭头1375指示的,可以将扩展的以太网分组划分为两个EIW分组的数据部分。 As indicated by the dashed arrows 1375, an extended Ethernet packet may be divided into the data portions of two EIW packets.

[0159] 更具体地,虚线箭头1375所图示的实施方案示出了:(1)将扩展的以太网分组1330的第二部分放入EIW分组1350的数据部分1352,(2)将全部扩展的以太网分组1332放入EIW分组1350的数据部分1353,以及(3)将扩展的以太网分组1334的第一部分放入EIW分组1350的数据部分1354。 [0159] More specifically, the illustrated dashed arrows 1375 shows an embodiment: the second portion (1) of the extended Ethernet packet 1330 is put into the data portion 1352 EIW packet 1350, (2) the entire extended Ethernet packets into the EIW packet data portion 1332 13,531,350, and (3) the first portion of the extended Ethernet packets into the EIW packet 1334 of the data portion 1350 of 1354. 从而,在关于EIW分组1350的一种情境下,(I)第一数据部分1352包含部分的扩展的以太网分组,以及(2)最后的数据部分1354包含部分的扩展的以太网分组,同时(3)中间数据部分(1353和未被明确示出的任何其它数据部分)包含完整的扩展的以太网分组。 Ethernet Thus, in a situation on the EIW packet 1350, (the I) the first data portion 1352 contains a packet of the extended portion, and (2) the last data portion 1354 contains a partial extended Ethernet packet, while ( any other data portion 3) the middle data portions (1353 and are not explicitly shown) contain complete extended Ethernet packets. 尽管未示出,但应清楚,可以将扩展的以太网分组1330的第一部分放置在之前的EIW分组的数据部分中,以及(2)可以将扩展的以太网分组1334的第二部分放置在随后的EIW分组的数据部分中。 Although not shown, it should be apparent, can be the first portion of the extended Ethernet packet 1330 is placed in the data portion of the EIW packet before, and (2) a second portion of the extended Ethernet packet 1334 is then placed in the data portion of the EIW packet.

[0160] 在变换1300的最终阶段,EIff分组1350被包括作为WLAN分组1318中的数据部分1360。 [0160] In the final stage of the transformation 1300, EIff data packet 1350 is included as part of the WLAN packet 1318 1360. WLAN 分组1318 还包括WLAN MAC 首标1362 和FCS1364。 WLAN packet 1318 also includes a WLAN MAC header 1362 and FCS1364.

[0161] 如应清楚的,不是所有的实施方案都使用所有可选的首标和尾标,甚至也不使用所有(或任何)可选的中间操作(也被称作阶段)。 [0161] As should be clear, not all embodiments use all of the optional headers and tails, nor even use all (or any) of the optional intermediate operations (also referred to as stages). 例如,其它实施方案仅仅将扩展的以太网分组的一部分拷贝到EIW分组,以便将更多的原始数据(例如,数据部分1326、1328和1329)装入固定持续时间的时隙。 For example, other embodiments are merely extended Ethernet packets into the EIW packet copy part, so more of the original data (e.g., data portions 1326, 1328 and 1329) into a fixed time slot duration. 如应清楚的,基于设计目标和限制,对于每个实施方案,对使用哪些首标和尾标、以及包括多少中间操作的确定是可以变化的。 As should be clear, based on design goals and constraints, for each embodiment, the determination of which headers and tails to use, as well as how many intermediate operations are included may vary.

[0162] 参照图14,图1400示出了PADM怎样封装以太网分组的一个实施方案。 [0162] Referring to Figure 14, diagram 1400 illustrates an embodiment of how PADM encapsulated Ethernet packet. PADM维护进入(ingress)队列,每个进入的以太网分组被放置在该进入队列中。 PADM maintains enter (Ingress) queues, each incoming Ethernet packet is placed in the access queue. PADM将以太网分组级联(concatenate)为串1420,并且添加EIW首标1430和WLAN首标1440。 PADM Ethernet packets cascade (CONCATENATE) of the string 1420, and adds EIW header 1430 and a WLAN header 1440. 依赖于在首标1430和1440中包括的信息,可以提前构建这些首标1430和1440或者在级联以太网分组之后构建这些首标1430和1440。 Relies on information in the header 1430 and 1440 included, can be constructed in advance of these headers 1430 and 1440 or build these headers 1430 and 1440 after the Cascade Ethernet packet. 例如,至少一个实施方案将表示串1420中以太网分组的数目(number)的数字(number)包括在EIW首标1430中。 For example, at least one embodiment indicating the number (number) 1420 of the Ethernet packet sequence numbers (number) included in the EIW header 1430. 假定以太网分组可以具有可变的长度,直到以太网分组已经被组装为串1420之后,典型地,该数字才是可用的。 Assuming Ethernet packets may have a variable length, until after the Ethernet packets have been assembled into a string 1420, typically, the number is available. 如应清楚的,可以定义首标1430和1440来适应特定实施方案的需要。 As should be clear, the header can be defined 1430 and 1440 to meet the needs of a particular embodiment.

[0163] 参照图15,不出了EIW首标的一个实施方案的格式1500。 [0163] Referring to FIG. 15, not the format of a header 1500 EIW embodiment. 格式1500包括用于序列号码和应答号码的字段1510、总的分组数目1520以及一系列分组描述符,该系列分组描述符对于在WLAN分组中封装的每一个以太网分组都包括一个描述符。 Format 1500 includes a field for the serial number and the response number 1510, the total packet number 1520, and a series of packet descriptors, the series of packet descriptors for each Ethernet packet encapsulated in the WLAN packet includes a descriptor. 相应地,如图15的省略号所指示的,预见了可变数目的分组描述符。 Accordingly, as indicated by the ellipses 15, it foresees a variable number of packet descriptors. 示出了分组描述符1530和1540,分组描述符1530和1540中的每一个包括分组标志(分别是1550和1555)以及分组长度(分别是1560 和1565)。 It shows the packet descriptors 1530 and 1540, each of the packet descriptors 1530 and 1540 including a packet flag in (1550 and 1555, respectively) and the packet length (1560 and 1565, respectively).

[0164] 序列号码(1510)提供了封装的数据的序列标识符,其允许接收方对传送的接收进行应答。 [0164] sequence number (1510) provides a sequence identifier for the encapsulated data, which allows the receiver to the received response is transmitted. 应答号码提供了对之前接收的数据的应答。 Answer number provides a response to the data previously received. 总的分组数目是在WLAN分组中封装的以太网分组的数目。 Is the number of the total number of packets encapsulated in the WLAN packet in the Ethernet packet.

[0165] 分组标志(1550,1555)指示相关联的以太网分组是否是完整的分组。 Whether the packet [0165] Packet Flag (1550, 1555) indicates that the associated Ethernet packet is complete. 假定时隙具有固定的持续时间,则有可能全部以太网分组可能不能装入给定的WLAN分组。 Assuming slot has a fixed duration, it is possible to mount the entire Ethernet packet might not given WLAN packet. 相应地,在特定的实施方案中,期望在任何给定的WLAN分组中第一和最后的以太网分组典型地将是不完整的。 Accordingly, in particular embodiments, it is desirable in any given WLAN packet in a first and last Ethernet packet typically be incomplete. 分组长度(1560,1565)指示特定的以太网分组的长度。 Packet length (1560,1565) indicate the length of a particular Ethernet packet.

[0166] 继续处理1100,在图10的实施方案中,例如可以由调制解调器1010的PADM 1016来执行操作1150。 [0166] 1100 to continue processing in the embodiment of Figure 10, for example, operation 1150 may be performed by the PADM 1016 of the modem 1010. 其它实施方案可以在例如桥接器、以太网接口、WLAN接口、除了PADM之外的另一中间组件、桥接器之上的组件、或者组件的组合中执行操作1150。 Other embodiments may, for example, bridge, Ethernet, WLAN interfaces, in addition to a combination of another intermediate component than the PADM, a component above the bridge, or assembly operations 1150 performed. 如应清楚的,可以以例如软件(诸如指令的程序)、硬件(诸如IC)、固件(诸如在处理器件中嵌入的固件)、或者其组合来实施用于执行操作1150的(多个)组件。 As should be clear, for example, it may be software (such as program instructions), hardware (such as the IC), firmware (such as embedded firmware in the processor element), or a combination thereof for performing the operation 1150 (s) component .

[0167] 另外,PADM可以位于调制解调器内的不同位置(诸如,例如,桥接器之上或者以太网接口和桥接器之间),位于各接口之一或桥接器内,和/或分布在多个组件间。 [0167] Additionally, the PADM may be located in different positions within the modem (such as, e.g., above the bridge or between the Ethernet interface and the bridge), each located within one of the interfaces or the bridge, and / or distributed across multiple between components.

[0168] 处理1100进一步包括调制解调器通过电缆向AP发送封装后的分组(1160)。 [0168] The process 1100 further comprises a grouping (1160) after the modem transmits to the AP through a cable package. 所发送的分组旨在供路由器接收。 The transmitted packet is intended for the receiving router. 电缆可以包括,例如,同轴电缆、光纤电缆、或者其它有线的传送介质。 Cable may comprise, for example, a coaxial cable, fiber optic cable, or other wired transmission medium.

[0169] 在特定的实施方案中,当调制解调器的上行链路时隙到来时,调制解调器将从进入队列中收集分组并且将它们放入一个大的WLAN分组中。 [0169] In a particular embodiment, when the modem uplink timeslot arrives, the modem from the packet queue and collecting them into a larger packet into the WLAN. 该WLAN分组不大于时隙所允许的最大分组。 The maximum packet slots WLAN packet is not greater than allowed. 相反地,当时隙到来时,如果WLAN分组不够大以填充固定时隙的持续时间,则一个实施方案仍然发送该(较小的)WLAN分组,而另一实施方案发送空(NULL)数据。 Conversely, when the time slot comes, if the WLAN packet is not big enough to fill the duration of the fixed timeslot, then one implementation still sends the embodiment (smaller) WLAN packet, whereas another embodiment transmits a null (NULL) data.

[0170] 参照图16,处理1600描绘了用于接收封装后的分组、解封装分组、以及递送组成分组的处理。 [0170] Referring to FIG. 16, a process 1600 depicts a packet after encapsulation for receiving, de-encapsulated packet, and a packet consisting of the delivery process. 该处理1600也被称作上行链路接收处理。 This process 1600 is also referred to as an uplink reception process.

[0171] 处理1600包括AP通过WLAN接口从调制解调器接收封装后的分组(1620)。 [0171] The processing packet comprises 1600 (1620) after AP receives the package from the modem via the WLAN interface. 在图10的实施方案中,AP 1030从调制解调器1010接收封装后的分组。 In the embodiment of FIG. 10, AP 1030 receives the encapsulated packet 1010 from the modem. 通过电缆网络1040(诸如同轴电缆网络)在WLAN接口1075处接收该分组。 The packet receiving WLAN interface 1075 via cable network 1040 (such as a coaxial cable network).

[0172] AP对所接收的分组进行解封装以提取构成封装后的分组的组成分组(1630)。 [0172] AP packet decapsulates the received packet to extract the composition (1630) composed of the encapsulated packet. 在图10的实施方案中,WLAN接口1075向PADM 1076发送所接收的(封装后的)分组。 In the embodiment of Figure 10, WLAN interfaces 1075 packet (after encapsulation) to the PADM 1076 transmits received. PADM1076执行解封装并且向桥接器1074提供组成以太网分组。 PADM1076 decapsulates the packet and provides the constituent Ethernet bridge 1074. 通过检查例如总的分组数目1520、以及每个分组描述符(例如,分组描述符1530)的分组标志(例如,分组标志1550)和分组长度(例如,分组长度1560)来执行解封装。 Decapsulation is performed by examining, for example, the total packet number 1520, and each packet descriptor (for example, packet descriptor 1530) packet flag (e.g., packet flag 1550) and packet length (e.g., packet length 1560). 通过检查这样的数据,PADM 1076能够确定组成分组中的每一个在哪里开始和结束。 By examining such data, PADM 1076 is able to determine where the composition of each of the beginning and end of the packet.

[0173] 具体地,PADM 1076检查每个组成分组以确保该组成分组是完整的以太网分组。 [0173] Specifically, PADM 1076 examines each packet to ensure that the composition is composed of a complete packet of Ethernet packets. 如果组成以太网分组不完整,则PADM 1076保留该不完整的分组并且等待直到接收到该以太网分组的剩余部分(大概在随后的封装后的分组中)。 If a constituent Ethernet packet is not complete, then the PADM 1076 retains the incomplete packets and waits until the rest of the Ethernet packet (probably after a subsequent packet encapsulation). 当接收到以太网分组的剩余部分时,PADM 1076组装完整的以太网分组并且将完整的以太网分组转发至桥接器1074。 Upon receiving the remainder of the Ethernet packet, PADM 1076 assembled complete Ethernet packet and complete Ethernet packet 1074 is forwarded to the bridge.

[0174] 参照图17,在图1700中描绘了对于所接收的封装后的分组1710的操作1630的以上实施方案。 [0174] Referring to FIG 17, illustrates the operation for the received encapsulated packet 1710 to 1630 of the above embodiment in FIG 1700. 为了简单起见,假设所接收的封装后的分组1710与参照图14描述的所传送的分组相同。 For simplicity, it is assumed the same as the transmitted packet described in the 1710 packet received package 14 described with reference to FIG. 然而,应理解,在实际中可能出现所传送的分组和所接收的分组之间的变化。 However, it should be understood that variations between the transmitted packet and the received packet may appear in practice. 所接收的分组1710包括WLAN首标1440、EIW首标1430、以及组成以太网分组的串1420。 The received packet 1710 includes the WLAN header 1440, EIW header 1430, and 1420 series consisting of the Ethernet packet.

[0175] 当PADM 1076处理所接收的分组1710时,如果组成以太网分组是完整的,则将该分组(例如,分组1720)提供给桥接器1074。 [0175] When the time 1710, if a constituent Ethernet packet is complete PADM 1076 processes the received packet, then the packet (e.g., packet 1720) to the 1074 bridge. 如果组成以太网分组不完整,则将该不完整的分组存储在等待队列1730中(其不必位于PADM1076中)直到该分组的剩余部分到达。 If a constituent Ethernet packet is incomplete, then the incomplete packet is stored until the remaining portion of the packet arrives at the queue 1730 (which need not be located in PADM1076). 图1700示出不完整的分组1740被存储在等待队列1730中。 FIG 1700 shows an incomplete packet 1740 being stored in the waiting queue 1730. 例如,如果以太网分组跨越(span)两个WLAN分组,这可能出现。 For example, if the Ethernet packet spans (span) two WLAN packet, which may occur. 当分组完整时,该分组被发送到桥接器1074。 When the packet is complete, the packet is transmitted to the bridge 1074. 注意,WLAN分组可以包括例如,一个完整的以太网分组和一个部分的以太网分组。 Note, WLAN packet may include, for example, one complete Ethernet packet and a portion of the Ethernet packet.

[0176] 参照图18,为进一步描述解封装处理1130,描绘了提供PADM 1016或者1076的实施方案的PADM 1750。 [0176] Referring to FIG. 18, as further described decapsulation process 1130 is depicted embodiment provides PADM 1016 or 1076 of the PADM 1750. PADM 1750包括封装器1760和解封装器1770。 PADM 1750 includes a package 1760 decapsulator 1770. 封装器1760和解封装器1770被通信地耦合到桥接器和WLAN接口。 Encapsulator 1760 and the decapsulator 1770 are communicatively coupled to the bridge and the WLAN interface. 给出了PADM 1750的组件,更具体地,PADM1750可以被称作分组封装/解封装模块。 PADM 1750 given assembly, and more particularly, PADM1750 may be referred to as packet encapsulation / decapsulation module.

[0177] 在操作中,如上所述,封装器1760从桥接器接受以太网分组并且封装以太网分组。 [0177] In operation, as described above, the encapsulator 1760 accepts Ethernet packets from the bridge and encapsulates the Ethernet packets. 然后封装后的数据被提供给WLAN接口。 Then encapsulated data is provided to the WLAN interface.

[0178] 在操作中,解封装器1770从WLAN接口接收封装后的数据。 [0178] In operation, the decapsulator 1770 receives data from the WLAN package interface. 如上所述,解封装器1770将所接收的数据进行解封装,并且提供解封装后的数据给桥接器。 As described above, The decapsulator 1770 decapsulates the received data, and provides the decapsulated data to the bridge.

[0179] 很清楚,其它实施方案是可能的并且是可预见的。 [0179] Clearly, other embodiments are possible and are envisioned. 例如,另一实施方案组合了封装器和解封装器。 For example, another embodiment of the combination package decapsulator. 而另一实施方案使用Linux的虚拟以太网接口特征。 The program features another virtual Ethernet interface using the Linux implementation.

[0180] 注意,AP或调制解调器的其它实施方案从WLAN接口直接向桥接器发送封装后的分组。 [0180] Note that the packet encapsulated other embodiments, AP or a modem to directly bridge from the WLAN interface. 桥接器确定该分组是被封装的并且将该分组发送至PADM。 The bridge determines that the packet is encapsulated and sends the packet to a PADM.

[0181] 继续处理1600,AP确定要将组成分组发送至路由器(1640)。 [0181] Processing continues 1600, AP determining to compositions packet sent to the router (1640). 可以在处理1600的不同点处,将该操作(1640)与其它许多操作一起执行。 Can be at different points in the processing 1600, the operation (1640) performed with many other operations. 在图10的实施方案中,桥接器1074确定要将分组发送至路由器1090。 In the embodiment of Figure 10, the bridge 1074 determines To packet sent to the router 1090.

[0182] AP然后通过以太网接口向路由器发送组成分组(1650)。 [0182] AP then sends the constituent packets (1650) to the router via the Ethernet interface. 在图10的实施方案中,桥接器1074向以太网接口1077发送组成分组,以太网接口1077通过以太网网络1082向路由器1090发送所述分组。 In the embodiment of Figure 10, the bridge 1074 transmits the packet to the Ethernet interface composed 1077, Ethernet interface 1090 to the router 1077 by sending 1082 the Ethernet packet network.

[0183] 路由器接收(1060)并处理(1070)所述分组。 [0183] The router receives (1060) and processing (1070) said packet. 处理可以包括例如向诸如主机正在与之通信或者试图与之通信的网站之类的进一步的目的地发送分组或者分组的一部分。 Processing may include, for example, to a portion such as a host is communicating or attempting to further with the destination site based communication transmission packet or packets. 此夕卜,在封装后的分组包括来自多个主机的以太网分组的实施方案中,路由器可以向多个网站发送底层(underlying)信息。 Bu this evening, the encapsulated packets embodiments including Ethernet packets from multiple hosts, the router may send the underlying (the underlying) message to a plurality of sites.

[0184] 参照图19,处理1800描绘了用于从路由器接收AP处的分组的处理。 [0184] Referring to FIG. 19, process 1800 depicts a process for receiving packets from the router at the AP. 封装分组,并且从AP传送封装后的分组。 Encapsulated packet, and from the encapsulated packet transmitted by the AP. 所传送的封装后的分组旨在供调制解调器接收,组成分组旨在从调制解调器向一个或多个主机进行最后的递送。 Encapsulated packet transmitted by the modem is intended for receiving a packet intended to be the final composition is delivered from the modem to one or more hosts. 该处理1800也被称作下行链路传送处理。 This process 1800 is also referred to as a downlink transmission process.

[0185] 处理1800包括:路由器接收旨在去往一个或多个主机的一个或多个分组(1820),以及路由器向AP发送所接收的(多个)分组(1830)。 [0185] Process 1800 includes: receiving a router destined for an intended one or more hosts or more packets (1820), and (s) to the packet router transmits the received AP (1830). 路由器可以从例如正试图与一个或多个主机通信的一个或多个网站接收分组。 Router may be with one or more one or more sites communicating with the host is trying to receive packets from, for example. 在图10的实施方案中,路由器1090从因特网1095接收分组。 In the embodiment of Figure 10, the router 1090 receives the packet 1095 from the Internet. 然后路由器1090通过以太网网络1082向AP 1030的以太网接口1077发送所接收的分组。 Then the router 1090 through the network 1082 sends an Ethernet packet AP 1030 is received by the Ethernet interface 1077.

[0186] AP确定通过WLAN接口要将至少一个所接收的分组发送至调制解调器(1840)。 [0186] AP is determined by at least one WLAN interface To transmit the received packet to the modem (1840). 在图10的实施方案中,以太网接口1077将所接收的分组(其是以太网分组)路由至桥接器1074。 In the embodiment of Figure 10, the Ethernet interface 1077 to the received packet (which is an Ethernet packets) to the bridge 1074 routes. 桥接器1074确定要通过WLAN接口1075将分组发送至例如调制解调器1010。 The bridge 1074 determines to send the packet to the WLAN interface such as a modem 1010 through 1075.

[0187] AP将要传送至调制解调器的、包括一个或多个所接收的分组的多个分组进行封装(1850)。 [0187] AP to be transmitted to the modem, including the one or more received packets of the plurality of packets encapsulating (1850). 注意,多个分组都是从路由器接收的,但是可以是已经在路由器处从一个或多个不同的源(例如,不同的网站)接收的。 Note that, a plurality of packets are received from the router, but may have been received from one or more different sources (e.g., different sites) at the router. 此外,封装可以包括在操作1820中接收的(多个)分组和早先接收的并被存储在队列中的分组。 In addition, the package may include a packet (s) of the packet received in operation 1820 and the previously received and stored in the queue.

[0188] 关于操作1850,在图10的实施方案中,桥接器1074将所接收的(多个)分组转发给PADM 1076。 [0188] 1850 regarding the operation in the embodiment of Figure 10, the bridge 1074 forwards the packet to a PADM 1076 received (s). PADM 1076将所接收的(多个)分组与(例如)旨在去往调制解调器1010的其它分组一起进行排队,并且形成用于调制解调器1010可用的下行链路时隙的封装后的WLAN分组。 The PADM 1076 (s) of the received packet queue with (e.g.) intended other packets destined for modem 1010 together and form encapsulated WLAN packet for the available modem 1010 after the downlink slot. PADM 1076对每个调制解调器(也被称作站)维持单独的队列,包括用于调制解调器1010的第一队列和用于调制解调器1020的第二队列。 PADM 1076 is maintained separate queue for each modem (also referred to as stations), comprising a first queue for the modem 1010 and a modem 1020 for a second queue. 如之前在结合图11-15描述PADMlO 16时描述了封装。 As previously described when the package is described in conjunction with FIG PADMlO 16 11-15.

[0189] AP通过电缆连接向调制解调器发送封装后的分组,旨在向一个或多个主机进行最后的递送(1860)。 [0189] AP final delivery (1860) to one or more hosts connected via a cable transmitting the encapsulated packet to the modem, is intended. 在图10的实施方案中,PADM 1076以循环的(round_bin)方式为调制解调器1010和1020中的每一个准备WLAN分组。 In the embodiment of FIG. 10, PADM 1076 in (round_bin) in a cyclic manner the modem 1010 and 1020 prepared for each WLAN packet. 然后PADM 1076向WLAN接口1075供应准备好的WLAN分组以将其插入到TDF超级帧结构中对应的下行链路时隙中。 PADM 1076 then supplies the prepared WLAN interface 1075 WLAN packets to be inserted into the TDF superframe structure corresponding downlink slot. 然后WLAN接口1075使用TDF超级帧结构向调制解调器1010和1020传送WLAN封装后的分组。 WLAN interface 1075 and then using the TDF superframe structure encapsulated packet is transmitted to the WLAN modem 1010 and 1020.

[0190] 参照图20,处理1900描绘了用于接收封装后的分组、解封装分组,以及递送组成分组的处理。 [0190] Referring to FIG. 20, process 1900 is depicted for receiving a packet after encapsulation, decapsulation packets, and a packet consisting of the delivery process. 该处理1900也被称作下行链路接收处理。 This process 1900 is also referred to as a downlink reception process.

[0191] 处理1900包括:调制解调器通过WLAN接口从AP接收封装后的分组(1920)。 [0191] Process 1900 includes: a modem by grouping (1920) after receiving the WLAN interface package from the AP. 在图10的实施方案中,调制解调器1010通过电缆网络1040(诸如同轴电缆网络)在WLAN接口1017处接收封装后的分组。 In the embodiment of Figure 10, the modem 1010 via cable network 1040 (such as a coaxial cable network) receives the encapsulated packet at the WLAN interface 1017.

[0192] 然后,调制解调器对所接收的分组进行解封装,以提取构成封装后的分组的组成分组(1930)。 [0192] Then, the modem of the received packet decapsulates the packet to extract composition (1930) composed of the encapsulated packet. 在图10的实施方案中,PADM 1016执行WLAN分组的解封装并且向桥接器1014提供组成以太网分组。 In the embodiment of FIG. 10, PADM 1016 performs decapsulation of the WLAN packet and provides the constituent Ethernet packet 1014 to the bridge. 例如,可以如之前在图16-18的讨论中针对PADM 1076所描述地执行解封装。 For example, before performing decapsulation As discussed in FIGS. 16-18 as described for the PADM 1076.

[0193] 调制解调器确定要将组成分组发送至一个或多个预期的主机接收方(1940)。 [0193] To determine the composition of the modem transmits a packet to one or more intended host recipients (1940). 可以在处理1900的不同点处将该操作(1940)与许多操作一起执行。 This operation may (1940) at different points in the processing 1900 is performed with the number of operations. 例如,可以将操作1940与操作1930或者1950 —起执行。 For example, the operation 1940 or operation 1930 1950-- from execution. 在图10的实施方案中,桥接器1014确定要将分组发送给(多个)主机。 In the embodiment of Figure 10, the bridge 1014 determines To send a packet to the host (s).

[0194] 然后调制解调器通过以太网接口向(多个)主机发送组成分组(1950)。 [0194] and composition transmitting modem via the Ethernet interface packet (1950) to the host (s). 在图10的实施方案中,桥接器1014向以太网接口1015发送组成分组,以太网接口1015通过以太网网络1052向主机11054和主机21056中的一个或多个发送分组。 In the embodiment of Figure 10, the bridge 1014 transmits the packet to the Ethernet interface composed 1015, Ethernet interface 1015 transmits the packet to the host through the host computer 11054 and 21056 in one or more Ethernet network 1052.

[0195] 该一个或多个主机接收(1960)并处理(1970)分组。 [0195] The one or more hosts receive (1960) and process (1970) packets. 处理可以包括,例如,个人计算机存储通过因特网接收的多媒体文件,或者个人数字助理(PDA)显示电子消息(也是通过因特网接收的)供用户观看和交互。 Processing may include, for example, a personal computer stores the received multimedia files over the Internet, or a personal digital assistant (PDA) displaying an electronic message (also received over the Internet) for the user to view and interact with.

[0196] 现在描述图21-34。 [0196] FIGS. 21-34 will now be described. 然而,图21-34所表示的实施方案的描述不限于以下的讨论。 However, the description of the embodiment of FIGS. 21-34 indicated is not limited to the following discussion.

[0197] 为了利用802.11协议栈的成熟的硬件和软件实施方案,已经提出了利用修改的WLAN(无线局域网)芯片组利用WLAN以不同频带在同轴电缆介质中传送802.11帧的构思。 [0197] In order to utilize the mature hardware and software embodiments 802.11 protocol stack, it has been proposed using a modified WLAN (Wireless Local Area Network) WLAN chipset using a different transmission frequency band of the coaxial cable concept 802.11 medium. 相应地,对于这样的应用情境创建TDF (时分功能)协议来替换MAC (介质接入控制)层中的常规的802.1lDCF(分布式协调功能)或者PCF(点协调功能)机制。 Accordingly, for such applications to create context the TDF (time division function) to replace the protocol MAC (Media Access Control) conventional 802.1lDCF (Distributed Coordination Function) layer or the PCF (point coordination function) mechanism. 如上所述,该TDF协议是基于TDMA(时分多路接入)的,TDMA通过将同一信道划分为不同的时隙允许多个用户来共享该信道。 As described above, the TDF protocol is based on TDMA (Time Division Multiple Access), TDMA is divided by the same channel different time slots to allow multiple users to share the channel. TDF STA(站)中的每一个使用在由TDF AP(接入点)指派的TDF超级帧中它们自身的时隙,一个接一个地快速相继地传送上行链路业务量。 TDF the STA (station) in each of a TDF superframe by the TDF the AP (Access Point) in their own assigned time slot, one after the other in rapid succession for uplink traffic transmission. 对于下行链路业务量,STA共享信道,并且通过将帧中的目的地地址信息与它们感兴趣的地址比较来选择以它们为目标的巾贞。 For downlink traffic, the STA shared channel, and selects them as a target address by comparing the towels Chen destination address information in the frame of interest to them. 图5图示了当存在m( = tdfUplinkTimeSlotNumber)个STA同时竞争上行链路传送机会时,对典型的TDF超级帧的时隙分配。 5 illustrates when there is m (= tdfUplinkTimeSlotNumber) while a STA competition uplink transmission opportunity, the slot allocation of a TDF superframe typical.

[0198] 如关于图5所不并描述的,每个TDF超级巾贞存在tdfTotalTimeSlotNumber个固定数目的时隙,其由以下组成:一个⑴用于从TDF AP向TDF STA发送时钟同步信息的Sync时隙;一个(I)用于发送对上行链路时隙分配的注册请求的争用时隙;由注册的TDF STA —个接一个地向TDF AP发送数据和某些管理帧所使用的tdfUplinkTimeSlotNumber个上行链路时隙;以及由TDF AP向STA传送数据和某些管理帧所使用的tdfDownlinkTimeSlotNumber个下行链路时隙。 When a ⑴ for transmitting clock synchronization information from TDF AP to TDF STA Sync: [0198] as described with respect to FIG. 5 and are not described in Chen towel per TDF superframe presence tdfTotalTimeSlotNumber fixed number of time slots, which consists of gap; a (I) for transmitting a registration request slot allocation for the uplink contention timeslot; registered by the TDF STA - one by one to send data and some management frames TDF AP used uplink tdfUplinkTimeSlotNumber link time slots; tdfDownlinkTimeSlotNumber and downlink time slots used by the TDF AP to the STA transmits data and some management frames. 除了Sync时隙之外,被命名为公共时隙的所有其它时隙具有长度等于t df CommonT imeSl otDurat 1n的相同的持续时间。 In addition to the Sync slots, is named as common time slot has a length equal to the other all the same duration t df CommonT imeSl otDurat 1n of.

[0199] 定义tdfCommonTimeSlotDurat1n的持续时间的值以允许:对于最高数据速率模式,在一个标准时隙中传送至少一个最大的802.1IPLCP (物理层会聚协议)协议数据单元(PPDU)。 Duration value [0199] defined to allow tdfCommonTimeSlotDurat1n: For the highest data rate mode, transmitting at least one maximum 802.1IPLCP (physical layer convergence protocol) protocol data unit (PPDU) in one normal timeslot. Sync时隙的持续时间tdfSyncTimeSlotDurat1n短于公共时隙的持续时间,这是因为在该时隙中从TDF AP向TDF STA传送的时钟同步帧短于802.11数据帧。 Sync tdfSyncTimeSlotDurat1n slot duration shorter than the duration of the common slot, because the clock in the time slot from TDF AP to TDF STA transmitted synchronization frame is shorter than the 802.11 data frame.

[0200] 结果,可以通过以下公式来计算被定义为tdfSuperframeDurat1n的一个TDF超级帧的持续时间: [0200] Results may be calculated by the following formula is defined as the duration of one TDF superframe tdfSuperframeDurat1n:

[0201] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n+tdfCommonTimeSlotDurat1n氺(tdfTotalTimeSlotNumber-1) [0201] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n + tdfCommonTimeSlotDurat1n Shui (tdfTotalTimeSlotNumber-1)

[0202] tdfTotalTimeSlotNumber、tdfUplinkTimeSlotNumber 以及tdfDownlinkTimeSlotNumber之间的关系满足以下等式: [0202] The relationship between tdfTotalTimeSlotNumber, tdfUplinkTimeSlotNumber tdfDownlinkTimeSlotNumber and satisfy the following equation:

[0203] tdfTotalTimeSlotNumber = tdfUplinkTimeSlotNumber [0203] tdfTotalTimeSlotNumber = tdfUplinkTimeSlotNumber

[0204] +tdfDownlinkTimeSlotNumber+2 [0204] + tdfDownlinkTimeSlotNumber + 2

[0205] 在使用WLAN芯片组利用减少的频带以通过CATV接入网络来提供数据传送的实际应用情境中,典型地存在两种应用。 [0205] In the context of practical application to use the WLAN chipset using a reduced frequency band to provide data transmission through the CATV access network, there are typically two applications. 一种应用是利用该解决方案提供因特网接入,使得必须向订户分配对于恒定数据速率和QoS(服务质量)的保证时隙。 One application is to provide Internet access using the solution, such that the subscriber assigned to the time slots must be guaranteed for a constant data rate and QoS (Quality of Service). 其他应用是使用该解决方案以从订户侧向首端(head-end)传送诸如数字电视服务中VoD(视频点播)应用中的用户控制消息之类的零星的(sporadic)的上行链路业务量。 Uplink traffic of other applications using the solution from the subscriber to the head end side (head-end), such as a digital television services transmitted in VoD (Video on Demand) controlling user applications such sporadic message (sporadic) of .

[0206] 利用以上提出的MAC层机制,向AP注册的STA首先获取上行链路时隙,然后在每个超级帧中所分配的时隙中传送这种类型的控制消息。 The MAC layer mechanism [0206] With the above proposed registered AP STA to obtain the first uplink time slots, then this type of control message transmitted in each super-frame time slots allocated in. 然而,因为这种类型的应用的业务量非常小,STA需要时隙的非常小的一部分用于数据传送,并且更甚者,即使在被用来支持具有零星的业务量的这种类型的应用的、TDF STA的若干连续的超级帧期间,相当有可能不存在要传送的业务量。 However, because this type of applications is very little traffic, the STA needs a very small portion of the time slot for data transmission, and worse still, even in this type of application have been used to support traffic sporadic and during several successive super frame TDF STA, a considerable amount of traffic is likely to be transmitted does not exist. 由此,本领域的技术人员将明白在某些情境下,在TDF协议中利用先前创建的并且已知的纯粹的时分介质接入方法来支持这种第二类型的应用可能是相当浪费的。 Thus, those skilled in the art will appreciate that in some situations, the use of known and purely time division access method previously created media to a second support this type of application can be quite wasteful in the TDF protocol.

[0207] 根据其他已知的实施方案,在基于争用的上行链路时隙期间,具有要传送的零星上行链路业务量并且没有向TDF AP注册上行链路时隙分配的TDFSTA将使用DCF机制向TDF AP发送上行链路业务量。 [0207] According to other known embodiments, during a contention based uplink slot having an uplink traffic to be transmitted and sporadic not link time slot assigned to the uplink TDFSTA TDF AP register using DCF mechanisms to transmit uplink traffic TDF AP.

[0208] 然而,由于DCF机制固有的特征,如果一个TDF STA总是使用较小的争用窗口来获取传送机会,则可能它将比其他STA具有接入用于上行链路业务量传送的信道的更大的机会。 [0208] However, due to the inherent characteristics DCF mechanism, if the TDF STA always a smaller contention window used to obtain the opportunity to transmit, it may have access channel for uplink transmission traffic than other STA greater opportunities. 并且相应地,对上行链路业务量而言,在那些使用基于争用的介质接入方法的TDF STA之间不能实现公平的传送机会的分布。 And accordingly, the uplink traffic, the distribution between those based on the use of medium access contention TDF STA can transmit a fair chance.

[0209] 为了在电缆接入网络上支持数据服务和零星的用户控制消息,本公开至少提出了两种类型的TDF。 [0209] In order to support data services and sporadic user on the cable access network control message, the present disclosure proposes at least two types of TDF. 第一种使用轮询和时分介质接入两者,第二种使用混合机制来获取上行链路信道。 Both polling and time division using a first media access mechanism to obtain a second mixed uplink channel. 诸如使用轮询和基于争用的混合机制之类的变形和进一步的组合是可预想到的,并且被视作本公开的一部分。 And variations such as polling mixing mechanism and further combinations of such contention-based is envisioned and are considered part of the present disclosure.

[0210] 参照图21,为了对具有QoS支持的高数据速率服务以及具有零星的数据业务量和等待时间(latency)容限(tolerance)属性的其他服务这两者提供支持,示出了最新技术水平(state-of-the-art)的TDF,其包括用于上行链路信道接入的轮询和时分介质接入机制这两者。 [0210] Referring to FIG 21, in order to have sporadic data traffic and latency (Latency) tolerance to high data rate services with QoS support and (Tolerance) Other service attributes support both showing the latest technology level (state-of-the-art) of TDF, which includes both the polling and a media access mechanisms time division access uplink channel letter.

[0211] 所提出的具有轮询和时分介质接入这两者的TDF向先前实施的TDF例程中使用的TDF超级帧的时隙添加一个时隙(例如,轮询时隙)。 Slot has a TDF superframe polling and time division medium access both to the TDF TDF routine in the previous embodiment [0211] The proposed adding a time slot (e.g., polling time slot).

[0212] 如图21中所不,每个TDF超级巾贞存在tdfTotalTimeSlotNumber个固定数目的时隙,并且其中包含的每种类型的时隙的详细的功能列举如下: [0212] FIG. 21 is not, per TDF superframe towel Chen presence tdfTotalTimeSlotNumber fixed number of time slots, each type of detailed functional slots and contained therein are listed below:

[0213] >一个(I)Sync时隙。 [0213]> a (I) Sync slot. 该Sync时隙指的是同步时隙,被用于从TDF AP向TDF STA发送时钟同步信息。 Sync The sync time slots means that time slots are used to send clock synchronization information from TDF AP to TDF STA.

[0214] >一个(I)Reg.时隙。 [0214]> a (I) Reg. Timeslots. TDF STA使用该Reg.时隙(S卩,注册时隙)向TDF AP发送注册请求。 Using the TDF STA Reg. Slot (S Jie, registration slot) send a registration request to the TDF AP. 在注册请求帧本体中,TDF STA通知AP其用于上行链路传送机会的获取的操作模式:轮询模式或者时分模式。 The registration request frame body, TDF STA notifies the AP of its mode of operation for uplink transmission opportunity acquired: polling mode or a time division mode.

[0215] >一个(I)轮询时隙。 [0215]> a (I) polling time slot. 在该时隙期间,具有要传送的零星的上行链路业务量并且没有向TDF AP注册上行链路时隙分配的TDF STA将使用以下详细描述的特定的PCF (点协调功能)机制向TDF AP发送上行链路业务量。 PCF in particular during the time slot, uplink traffic has to be transmitted and scattered to the following detailed description is not to TDF AP link time slot assignment register uplink TDF STA (point coordination function) mechanism to TDF AP transmitting uplink traffic.

[0216] >下行链路时隙。 [0216]> downlink timeslots. 这些时隙包含TDF AP向TDF STA发送数据和某些管理帧所使用的tdfDownlinkTimeSlotNumber 个下行链路时隙。 These slots contain tdfDownlinkTimeSlotNumber TDF AP transmits data downlink time slots and some management frames to TDF STA.

[0217] >时分上行链路时隙。 [0217]> an uplink timeslot division. 这些时隙包含由注册的TDF STA—个接一个地向具有高数据速率和QoS支持的TDF AP发送数据和某些管理帧所使用的tdfUplinkTimeSlotNumber个上行链路时隙。 These slots contain uplink slots tdfUplinkTimeSlotNumber registered by the TDF STA- one by one to TDF AP transmits data with a high data rate and QoS support and some management frames used.

[0218] 基于具体的实际应用的需求,在大多数情况下,同步时隙、注册时隙、轮询时隙、下行链路时隙、以及时分上行链路时隙的持续时间彼此不同。 [0218] Based on the requirements of a particular practical application, in most cases, the duration of synchronization timeslot, slot register, polling time slot, downlink slots, uplink slots and a division different from each other. 然而,被称作公共时隙的tdfUplinkTimeSlotNumber个时分时隙中的每个上行链路时隙具有长度等于tdfCommonTimeSlotDurat1n 的相同的持续时间。 However, each uplink time slot is called a common slot tdfUplinkTimeSlotNumber time division slots having the same duration equal to the length of tdfCommonTimeSlotDurat1n.

[0219] 结果,可以由以下公式来计算被定义为tdfSuperframeDurat1n的一个TDF超级帧的持续时间: [0219] Results may be calculated by the following formula is defined as the duration of one TDF superframe tdfSuperframeDurat1n:

[0220] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n [0220] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n

[0221] +tdfRegTimeSlotDurat1n [0221] + tdfRegTimeSlotDurat1n

[0222] +tdfPollingTimeSlotDurat1n [0222] + tdfPollingTimeSlotDurat1n

[0223] +tdfCommonTimeSlotDurat1n [0223] + tdfCommonTimeSlotDurat1n

[0224] * (tdfTotalTimeSlotNumber-3) [0224] * (tdfTotalTimeSlotNumber-3)

[0225] tdfTotalTimeSlotNumber> tdfUplinkTimeSlotNumber 以及 [0225] tdfTotalTimeSlotNumber> tdfUplinkTimeSlotNumber and

[0226] tdfDownlinkTimeSlotNumber之间的关系满足以下等式: [0226] The relationship between tdfDownlinkTimeSlotNumber satisfies the following equation:

[0227] tdfTotalTimeSlotNumber = tdfUplinkT imeSlotNumber [0227] tdfTotalTimeSlotNumber = tdfUplinkT imeSlotNumber

[0228] +tdfDownlinkTimeSlotNumber+3 [0228] + tdfDownlinkTimeSlotNumber + 3

[0229] 轮询时隙期间内增强的PCF例程 Enhanced during [0229] PCF polling time slot routine

[0230] 对具有轮询和时分介质接入机制这两者的该TDF中的STA而言,各种实施方案包括两种操作模式:一种是轮询模式;另一种是时分模式。 [0230] The TDF of both polling and having a division STA medium access mechanisms, various embodiments include two operation modes: one is the polling mode; the other is a time division mode.

[0231] STA在轮询模式中操作以进行上行链路业务量传送的基本的介质接入方法是PCF。 [0231] STA operating in the polling mode for uplink traffic transmission of the medium access method is substantially PCF. 然而,由于在固定的线路上进行数据传送的特殊环境,已经对该经典的PCF机制进行了若干改进。 However, since the special environment data transmitted over the fixed line, several improvements have been made to the classical the PCF.

[0232] 基本的接入 [0232] The basic access

[0233] 轮询时隙中的PCF机制提供了免于争用的帧传输。 [0233] PCF polling mechanism in a slot provided in the frame transmission from contention. 参照图23,PC (点协调器)2302驻留在TDF AP 2300中。 Referring to FIG. 23, PC (point coordinator) 2302 reside in TDF AP 2300. 从AP发送的Beacon (信标)帧的Capability (能力)信息字段中标识了由AP 2300提供的轮询模式支持的形式。 Beacon (Beacon) frame transmitted from the AP Capability (capability) identification information field provided the polling mode supported by the AP 2300 forms. 需要基于轮询的介质接入的TDF STA 2304应当能够响应于从AP 2300接收的免于争用的轮询(CF-轮询),因此被称为可CF-轮询的。 TDF STA needs to access polling-based medium 2304 should be able to respond to the polling from contention received from the AP 2300 (CF- Poll), and therefore can be referred CF- polling. 当由PC 2302轮询时,可CF轮询的STA应当仅仅传送一个MPDU (MAC协议数据单元),该MPDU应当被发送至AP并且不需要由AP来应答该MPDU。 When polled by the PC 2302, CF-Pollable STA should transmit only one MPDU (the MAC protocol data unit), the MPDU should be sent to the AP and the AP does not need to answer the MPDU. AP应当从不轮询未在该AP的轮询列表中的STA。 AP STA shall never poll is not in the polling list of the AP's.

[0234] 由AP或者STA在轮询时隙期间发送的帧应当基于以下使用规则来使用合适的帧类型: [0234] during the polling frame transmitted by the AP or STA slot should be used based on the appropriate frame type usage rules:

[0235] 1.AP应当仅仅向可CF-轮询的STA发送CF-轮询。 [0235] 1.AP should only be sent to polling CF- CF- polled STA. 在该帧中,AP不向被寻址的接收者发送数据,而被寻址的接收者是被允许在该轮询时隙期间内发送的下一个STA ;以及 In this frame, the AP does not transmit data addressed to the recipient, the recipient is addressed is allowed under transmitted within a time slot during which the polling the STA; and

[0236] 2.可以由任何可CF-轮询的STA发送数据和空帧。 [0236] 2 may transmit the data frames and null any CF- polling by the STA.

[0237] AP在轮询时隙的开始处获得对介质的控制并且试图在整个轮询时隙中保持控制。 [0237] AP to acquire control of the medium at the start of the polling time slot and attempts to maintain control throughout the polling time slot. 不需要如在经典的PCF协议中由AP分别传送Beacon和CF-End来发信号通知(signal)轮询时隙的开始和结束。 Not required as in the classical protocol PCF Beacon transmitted by the AP, respectively, and to send CF-End start and end notification signal (Signal) of the polling time slot.

[0238] 当在轮询列表中存在条目(entry)时,AP应当在每个轮询时隙期间向至少一个STA发送CF-Poll。 [0238] When there is an entry (entry) in the polling list, AP STA should at least be a CF-Poll to send during each polling time slot. 在每个轮询时隙期间中,AP应当从头至尾依序向轮询列表中的STA的子集发出轮询。 During each polling time slot, AP should poll the sequence from beginning to end in the polling list subset of the STA.

[0239] 参照图24和图25,一旦开始每个轮询时隙,则AP应当向轮询列表中的一个STA传送(2506) CF-Poll帧。 [0239] Referring to FIGS. 24 and 25, once the start of each polling time slot, the AP shall transmit (2506) CF-Poll frame to a STA in the polling list. 如果在轮询列表中不存在条目(2502),则AP应当在该轮询时隙期间立即传送下行链路业务量(2504),直到下行链路时隙的结束。 If no entry exists (2502) in the polling list, the AP shall transmit during the polling time slot immediately downlink traffic (2504), until the end of downlink timeslots.

[0240] 在AP传送后从特定的可CF-轮询的STA接收到数据或者空帧(2508)之后,或者在AP传送后的预定义的时段内没有从特定的STA得到对CF-Poll的响应之后,则AP应当恢复控制并且可以向轮询列表中的下一条目传送其下一CF-Poll帧,除非在该当前轮询时隙期间内剩余的时间不够。 After [0240] After the transmission received from a particular AP may poll the STA CF- or null data frame (2508), or obtained from a specific STA is not within the predefined time period after transmission of the AP of the CF-Poll after the response, the AP should restore its control and may transmit the next CF-poll frame to the next entry in the polling list, unless the remaining period of the current time slot not polling. 如果此时,已到达了轮询列表中的最后的条目,则AP下次将尝试从轮询列表中的第一个条目开始,向STA发送CF-Poll帧。 If at this time, the last entry has been reached in the polling list, the AP will next attempt to start the polling list from the first entry, CF-Poll frame to the transmitting STA. 如果在当前轮询时隙中剩余的时间不足以允许被轮询的STA传送包含最小长度MPDU的数据帧,则AP将不发出CF-Poll帧(2510)。 If the remaining time slots in the current polling time is insufficient to allow the polled STA transmits a data frame containing a minimum length of the MPDU, the AP will not send CF-Poll frame (2510). 可替代地,在下一超级帧期间内的轮询时隙的刚开始处,AP将开始向轮询列表中的已经被轮询的STA中的下一条目、或者该轮询列表中的第一条目(如果已经被轮询的STA是列表中的最后条目)发出CF-Poll帧。 Alternatively, the polling time slot in the next super frame period at the beginning, the AP will start to the polling list have been polled the next entry in the STA, or the first polling list entry (if the polled STA is the last entry in the list) CF-poll frame sent.

[0241] 参照图24,与该AP相关联的处于轮询模式中的所有可CF轮询的STA应当不传送任何上行链路业务量,除非它在该轮询时隙期间内被该AP轮询。 [0241] Referring to FIG 24, STA CF-Poll in all of the polling mode associated with the AP should not transmit any uplink traffic, unless it is in a time slot during which the polling of the AP wheel consultation. 处于轮询模式中的可CF轮询的STA应当总是响应于指向其MAC地址并且无错误地接收的CF-Poll。 STA is in the polling mode may be always respond to polling CF CF-Poll and its MAC address to the director received without errors. 在接收到该CF-Poll之后,该STA应当立即传送一个数据帧。 After receiving the CF-Poll, the STA a data frame should be transmitted immediately. 如果STA在被轮询时没有帧要发送,则该响应应当是空帧。 If the STA is no frame to be transmitted when polled, the response should be a null frame. 在轮询时隙的结束之前没有足够的时间来发送其排队的数据帧的被轮询的、可CF-轮询的STA应当通过传送空帧来响应。 Not enough time before the end of the polling time slot to transmit its data frame is queued polling, polling can CF- STA shall respond by transmitting a null frame.

[0242] 轮询列表的维护 Maintenance [0242] polling list

[0243] AP应当维护“轮询列表”,以用于选择适合(eligible)在轮询时隙期间内接收CF-Poll并且强制可CF轮询的STA的轮询的STA。 [0243] AP should maintain "polling list", is used to select the appropriate (eligible) receiving a CF-Poll in force during the polling time slot and CF-Pollable STA is polled STA. 可以使用该轮询列表来控制用于传送被AP发送给可CF轮询的STA的数据帧所使用的CF-Poll类型。 The polling list may be used to control for CF-Poll frame transmission type STA data is transmitted to the CF-Poll AP to be used.

[0244] —旦AP从STA接收到其中该STA使用轮询机制要求接入信道的注册请求帧,并且AP基于在该AP中设置的策略决定向该STA授权这种类型的传送机制时,AP应当向轮询列表的末端添加一个条目,该条目包括该STA的MAC地址和数据速率。 [0244] - Once the AP when the STA received from the register wherein the polling mechanism used by the STA requires access channel request frame, and the AP-based policy decision set in the AP to the STA transmission mechanism of this type of authorization, AP an entry should be added to the end of the polling list, the entry includes the MAC address of the STA and data rate. 另一方面,一旦AP从STA接收到其中该STA使用轮询机制指示它将不接入信道的注销帧时,AP应当在轮询列表中删除该STA的对应的条目。 On the other hand, once the STA received from the AP to which the STA indicates the polling mechanism used, it will not log off the access channel frame, the corresponding entry should be deleted AP the STA in the polling list. 如果STA期望从时分模式改变为轮询模式时,则STA应当通过向AP发送注销来退出时分模式,并且然后发送具有轮询模式指示的注册请求来通知AP。 If the STA is desired to change from the time-division mode to a polling mode, the STA should exit time division mode to the AP by transmitting a cancellation, and then transmits the registration request has a polling mode indication to notify the AP.

[0245] 参照图22,为了享用由DCF提供的灵活性和由PCF提供的公平性,还描述了一种用于上行链路业务量的混合的介质接入机制,该混合的介质接入机制将对STA利用DCF和PCF这两者来获得对零星的业务量的传送机会,以及利用用于STA的专用时隙来传送高数据速率业务量。 [0245] Referring to FIG. 22, and in order to enjoy the flexibility provided by the PCF fairness provided by the DCF, also describes hybrid medium access mechanism for the uplink traffic, the hybrid medium access mechanism STA will use both DCF and PCF to obtain the opportunity to transmit sporadic traffic, and using a dedicated time slot for the STA to transmit high data rate traffic. 在图22中图示对该增强的TDF超级帧的详细的时隙分配。 Detail of the slot allocation illustrated in FIG. 22 enhanced the TDF superframe.

[0246] 如所示的,每个TDF超级巾贞存在固定的tdfTotalTimeSlotNumber个时隙,并且如下列出其中包含的每种类型的时隙的详细的功能: [0246] As illustrated, Chen towel per TDF superframe there is a fixed tdfTotalTimeSlotNumber slots, and functions listed below in detail for each type of slot which contains:

[0247]:>一个(I) Sync时隙。 [0247]:> a (I) Sync slot. 该Sync时隙指的是同步时隙,被用于从TDF AP向TDF STA发送时钟同步信息。 Sync The sync time slots means that time slots are used to send clock synchronization information from TDF AP to TDF STA.

[0248] >一个(I)基于争用的上行链路时隙。 [0248]> a (I) based on uplink time slot contention. 在该时隙期间内,TDF STA可以向TDF AP发送注册请求。 During the time slot in, TDF STA may send a registration request to the TDF AP. 在注册请求帧本体中,TDF STA将向AP通知其用于上行链路传送机会的获取的操作模式:轮询模式、基于争用的模式或者时分模式。 The registration request frame body, TDF STA notifies the AP mode of operation will be used for uplink transmission opportunity acquired: polling mode, based on the contention mode or a time division mode. 同时,具有要发送的零星的上行链路业务量并且没有向TDF AP注册上行链路时隙分配的TDF STA将使用特定的DCF机制向TDF AP发送上行链路业务量。 Meanwhile, with sporadic uplink traffic to be transmitted and no TDF AP register assigned to uplink time slot TDF STA to send uplink traffic to TDF AP using a specific DCF mechanism.

[0249] >一个(I)轮询时隙。 [0249]> a (I) polling time slot. 在该时隙期间,具有要传送的零星的上行链路业务量并且没有向TDF AP注册上行链路时隙分配的TDF STA将使用先前描述的特定的PCF机制向TDFAP发送上行链路业务量。 During the time slot, uplink traffic has to be transmitted and scattered to the TDF AP not allocated uplink time slot register TDF STA will use the previously described specific PCF mechanism to transmit the uplink traffic to TDFAP. 总的来说,TDF STA可以通过在由TDF STA向TDF AP发送的关联请求帧中设置对应的标志来向TDF AP通知它的操作模式(即,DCF或者PCF)。 In general, TDF STA can notify its operation mode to the TDF AP (i.e., DCF or PCF) by providing a corresponding association request sent by the TDF STA to TDF AP frame flag.

[0250] >下行链路时隙。 [0250]> downlink timeslots. 这些时隙包含TDF AP向TDF STA发送数据和某些管理帧所使用的tdfDownlinkTimeSlotNumber 个下行链路时隙。 These slots contain tdfDownlinkTimeSlotNumber TDF AP transmits data downlink time slots and some management frames to TDF STA.

[0251] >时分上行链路时隙。 [0251]> an uplink timeslot division. 这些时隙包含由注册的TDF STA—个接一个地向具有高数据速率和QoS支持的TDF AP发送数据和某些管理帧所使用的tdfUplinkTimeSlotNumber个上行链路时隙。 These slots contain uplink slots tdfUplinkTimeSlotNumber registered by the TDF STA- one by one to TDF AP transmits data with a high data rate and QoS support and some management frames used.

[0252] 基于实际应用的需求,在大多数情况下,同步时隙、基于争用的时隙、轮询时隙、下行链路时隙、以及时分上行链路时隙的持续时间彼此不同。 [0252] Based on the needs of practical application, in most cases, synchronization time slot, the duration of a contention-based slots, the polling slots, a downlink time slot and an uplink time slot of a time division different from each other.

[0253] 结果,可以由以下公式来计算被定义为tdfSuperframeDurat1n的一个TDF超级帧的持续时间: [0253] Results may be calculated by the following formula is defined as the duration of one TDF superframe tdfSuperframeDurat1n:

[0254] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n [0254] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n

[0255] +tdfContent1nTimeSlotDurat1n [0255] + tdfContent1nTimeSlotDurat1n

[0256] +tdfPollingTimeSlotDurat1n [0256] + tdfPollingTimeSlotDurat1n

[0257] +tdfCommonTimeSlotDurat1n [0257] + tdfCommonTimeSlotDurat1n

[0258] * (tdfTotalTimeSlotNumber-3) [0258] * (tdfTotalTimeSlotNumber-3)

[0259] tdfTotalTimeSlotNumber、tdfUplinkTimeSlotNumber 以及tdfDownl inkT imeSlotNumber之间的关系满足以下等式: [0259] The relationship between tdfTotalTimeSlotNumber, tdfUplinkTimeSlotNumber tdfDownl inkT imeSlotNumber and satisfy the following equation:

[0260] tdfTotalTimeSlotNumber = tdfUplinkT imeSlotNumber[0261 ] +tdfDownlinkTimeSlotNumber+3 [0260] tdfTotalTimeSlotNumber = tdfUplinkT imeSlotNumber [0261] + tdfDownlinkTimeSlotNumber + 3

[0262] 为了在电缆接入网络上支持数据服务和零星的用户控制消息,本原理提出使用基于争用的介质接入和时分介质接入两者用于获取上行链路信道。 [0262] In order to support data services and sporadic user on the cable access network control message, the present principles proposes the use of both contention-based medium access and time division medium access for acquiring uplink channel.

[0263] 为了对具有QoS支持的高数据速率服务以及具有零星的数据业务量和等待时间容限属性的其他服务这两者提供支持,提出了包括用于上行链路信道接入的基于争用的介质接入机制和时分介质接入机制这两者的最新技术水平的TDF。 [0263] In order to have sporadic data traffic and other services latency tolerance properties of high data rate services with QoS support and providing support for both the proposed channel comprising an uplink contention-based access TDF media access mechanism and time division medium access mechanism of this latest technology of both. 如下详细描述具有混合介质接入方法的该TDF协议的功能性描述。 A functional description of the TDF protocol has a hybrid medium access method is described below in detail.

[0264] 接入方法 [0264] Access Method

[0265] 本原理的具有基于争用的介质接入和时分介质接入的TDF向先前公开的TDF例程添加一个时隙(例如,注册时隙)。 [0265] Based on the present principles having medium access and time-division access of the contention medium TDF adding one slot (e.g., slot register) to TDF routine previously disclosed. 在图26中图示该增强的TDF超级帧的详细的时隙分配。 Detail of the slot allocation illustrated in FIG. 26 of the reinforcing TDF superframe.

[0266] 如图26中所不,每个TDF超级巾贞存在tdfTotalTimeSlotNumber个固定数目的时隙,并且其中包含的每种类型的时隙的详细的功能可以被列举如下: [0266] FIG do not, per TDF superframe towel Chen presence tdfTotalTimeSlotNumber fixed number of time slots 26, and wherein each type of detailed functional slots can be included are listed below:

[0267]- 一个(I) Sync时隙。 [0267] - a (I) Sync slot. 该Sync时隙指的是同步时隙,被用于从TDF AP向TDF STA发送时钟同步信息。 Sync The sync time slots means that time slots are used to send clock synchronization information from TDF AP to TDF STA.

[0268]-一个(I)Reg时隙。 [0268] - a (I) Reg slot. 该Reg时隙(即,注册时隙)与图5中描述的超级帧结构中的争用时隙相当(comparable),TDF STA使用该Reg时隙向TDF AP发送用于上行链路时隙分配的注册请求。 The Reg slot (i.e., slot register) super frame structure depicted in FIG. 5 rather contention slot (comparable), TDF STA using the TDF AP Reg time slot for uplink transmission slot assignment registration request.

[0269]-一个(I)基于争用的上行链路时隙。 [0269] - a (I) based on uplink time slot contention. 在该时隙期间内,具有要发送的零星的上行链路业务量并且没有向TDF AP注册上行链路时隙分配的TDF STA将使用以下详细描述的特定的DCF机制向TDF AP发送上行链路业务量。 DCF mechanism in particular during the time slot having sporadic uplink traffic to be transmitted and the following detailed description is not to be used to TDF AP link time slot assignment register uplink TDF STA transmits an uplink to TDF AP the volume of business.

[0270]-时分上行链路时隙。 [0270] - uplink timeslot division. 这些时隙包含由注册的TDF STA —个接一个地向 These slots contain a registered TDF STA - one by one to the

[0271] 具有高数据速率和QoS支持的TDF AP发送数据和某些管理帧所使用的 [0271] having a high data rate and TDF AP transmits QoS support data and some management frames used

[0272] tdfUplinkTimeSlotNumber 个上行链路时隙。 [0272] tdfUplinkTimeSlotNumber uplink timeslots.

[0273]-下行链路时隙。 [0273] - downlink timeslots. 这些时隙包含TDF AP向TDF STA发送数据和某些管 These slots contain TDF AP transmits data to the TDF STA and some of the pipe

[0274] 理巾贞所使用的tdfDownlinkTimeSlotNumber个下行链路时隙。 [0274] Zhen Li towels used tdfDownlinkTimeSlotNumber downlink time slots.

[0275] 在一个实施方案中,可以将Reg时隙和基于争用的上行链路时隙组合为一个混合时隙来改进系统性能。 [0275] In one embodiment, can be mixed Reg slot and a time slot to improve system performance based on the combination of slots uplink contention. 这种改进是由于以下的事实:两个时隙均使用基于争用的补偿(backoff)方法进行信道接入并且在大多数情况下在Reg时隙期间可能存在很少的业务量。 This improvement is due to the fact that: two slots are used for channel compensation based access (backoff) the contention and there is little traffic in most cases during a time slot may Reg. 另外,为了给注册请求帧的传送赋予比数据帧的传送更高的优先级,可以分别将注册请求中贞的争用窗口的CWmin和CWmax定义得小于数据巾贞的争用窗口的CWmin和CWmax。 Further, in order to transmit the registration request frame is given a higher priority than the data frame is transmitted, the registration request may be separately Chen contention window CWmin and CWmax is defined to be smaller than the data towel Fok contention window CWmin and CWmax .

[0276] 本领域的技术人员将认识到:在802.11标准中使用“争用窗口”,并且“争用窗口”表示STA在尝试接入无线介质之前将等待多少个极小的时隙(min1-slot),典型地是9微秒,并且然后STA将确定该介质是否可用于传送数据。 [0276] Those skilled in the art will recognize that: in the 802.11 standard, "contention window", and "contention window" denotes a STA before attempting to access the wireless medium minimum number of time slots will wait (min1- slot), typically 9 microseconds, and then the STA may determine whether the medium used for transmitting data. 借助于示例,通过在O和CWmin之间选择随机的补偿数(backoffnumber)来初始地确定精确的争用窗口数。 By way of example, to initially determine the exact number of contention window by selecting a random number compensators (backoffnumber) between O and CWmin. 每次补偿时段终止(expire),指示信道仍然繁忙,STA将以增加的方式在O和[CWmin, CWmax]中的数之间随机地选择另一补偿时段,直到最后选择了O和CWmax之间的补偿时段。 Termination of each compensation period (The expire), indicates that the channel is still busy, the STA will increase in a manner and O [the CWmin, CWmax] randomly selected between a number of further compensation period, until the last selected between O and CWmax the compensation period.

[0277] 通过分别将注册请求帧的争用窗口的CWmin和CWmax定义得比数据帧的争用窗口的CWmin和CWmax小,即,(注册的CWmin) < (数据巾贞的CWmin)并且(注册的CWmax)< (数据帧的CWmax),确保了注册请求帧的传送比数据帧的传送有更高的优先级。 [0277] and (separately registered by the registration request data using CWmin frame window CWmin and CWmax defined than the contention window and CWmax small, i.e., (a registered CWmin) <(data towel infidelity CWmin) contention frame the CWmax) <(data frames CWmax), to ensure that the registration request frame is transmitted with a higher priority than the data frames transmitted. 如以下解释的,该较高的优先级是由于在较小的争用窗口期间内较少数目的补偿时段可用。 As explained below, the higher priority is due to a smaller number of available during the compensation period smaller contention window.

[0278] 基于实际应用期间的需求,在大多数情况下,同步时隙、注册时隙、基于争用的上行链路时隙、时分上行链路时隙、以及下行链路时隙的持续时间彼此不同。 [0278] Based on demand during the practical application, in most cases, synchronization time slot, the time slot register, the contention-based uplink time slot, time-division uplink time slot and downlink slot duration different from each other. 然而,被称作公共时隙的tdfUplinkTimeSlotNumber个时分时隙中的每个上行链路时隙具有其长度等于tdfCommonTimeSlotDurat1n 的相同的持续时间。 However, each uplink time slot is called a common slot tdfUplinkTimeSlotNumber time division slots having the same duration whose length equals the tdfCommonTimeSlotDurat1n.

[0279] 结果,可以由以下公式来计算被定义为tdfSuperframeDurat1n的一个TDF超级帧的持续时间: [0279] Results may be calculated by the following formula is defined as the duration of one TDF superframe tdfSuperframeDurat1n:

[0280] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n [0280] tdfSuperframeDurat1n = tdfSyncTimeSlotDurat1n

[0281] +tdfRegTimeSlotDurat1n [0281] + tdfRegTimeSlotDurat1n

[0282] +tdfContent1nTimeSlotDurat1n [0282] + tdfContent1nTimeSlotDurat1n

[0283] +tdfCommonTimeSlotDurat1n [0283] + tdfCommonTimeSlotDurat1n

[0284] * (tdfTotalTimeSlotNumber-3) [0284] * (tdfTotalTimeSlotNumber-3)

[0285] tdfTotalTimeSlotNumber、tdfUplinkTimeSlotNumber 以及tdfDownl inkT imeSlotNumber之间的关系满足以下等式: [0285] The relationship between tdfTotalTimeSlotNumber, tdfUplinkTimeSlotNumber tdfDownl inkT imeSlotNumber and satisfy the following equation:

[0286] tdfTotalTimeSlotNumber = tdfUplinkT imeSlotNumber [0286] tdfTotalTimeSlotNumber = tdfUplinkT imeSlotNumber

[0287] +tdfDownlinkTimeSlotNumber+3 [0287] + tdfDownlinkTimeSlotNumber + 3

[0288] 另外,TDF超级帧中TDF STA的所分配的上行链路时隙的数目可以从O改变为tdfMaximumUplinkTimeSlotNumber。 [0288] Further, TDF superframe number of allocated uplink time slot TDF STA can vary from O to tdfMaximumUplinkTimeSlotNumber. 相应地,TDF超级巾贞中的下行链路时隙的可用持续时间可以从(tdfCommonTimeSlotDurat1n* (tdfTotalTimeSlotNumber-3))改变为(tdfCommonTimeSlotDurat1n氺(tdfTotalTimeSlotNumber-3-tdfMaximumUplinkTimeSlotNumber))。 Accordingly, the available downlink timeslot duration towel TDF superframe may change from Zhen (tdfCommonTimeSlotDurat1n * (tdfTotalTimeSlotNumber-3)) is (tdfCommonTimeSlotDurat1n Shui (tdfTotalTimeSlotNumber-3-tdfMaximumUplinkTimeSlotNumber)). 每次当存在请求上行链路时隙的一个TDF STA时,TDFAP将从可用的下行链路时隙中引出一个或多个公共时隙,并且然后将这些时隙分配给该TDF STA,只要在这之后上行链路时隙的数目将不超过tdfMaximumUplinkTimeSlotNumber 即可。 Each time when there is a TDF STA requests an uplink timeslot, TDFAP drawn from the available downlink timeslots in a common time slot or more, and then assign the time slots to the TDF STA, as long as after the number of uplink timeslots that will not exceed tdfMaximumUplinkTimeSlotNumber after.

[0289] 另外,尽管下行链路时隙的持续时间等于(tdfCommonTimeSlotDurat1n*tdfDownLinkTimeSlotNumber),但在这些公共时隙的边界之间不是必须具有保护时间,这是因为这些下行链路时隙是连续的并且从一个独立的AP发送业务量。 [0289] Further, although the duration of the downlink timeslot is equal to (tdfCommonTimeSlotDurat1n * tdfDownLinkTimeSlotNumber), but the boundary between these common slots have a guard time is not necessary, since these are continuous downlink time slots and transmitting traffic from a separate AP. 以此方式,在该协议中可以极大地改进下行链路传送的效率和信道利用率。 In this manner, in the protocol and can greatly improve the channel utilization efficiency of the downlink transmission.

[0290] 基于争用的上行链路时隙的增强的DCF例程 [0290] DCF routine based on the enhanced uplink contention timeslot of

[0291] 对于具有基于争用的介质接入机制和时分介质接入机制这两者的TDF中的STA而言,若干实施方案具有两种操作模式:一种是基于争用的模式;另一种是时分模式。 [0291] For a TDF based on these mechanisms and both the medium access contention access mechanisms time division medium in the STA, the several embodiments having two modes of operation: one is based on the contention mode; other species is division mode.

[0292] STA在基于争用的模式中操作进行上行链路业务量传送的基本的介质接入方法是在802.11规范中定义的DCF,该802.11规范通过使用CSMA/CA (具有避免冲突的载波感测多路接入)和跟随在繁忙的介质情形之后的随机的补偿时间来允许自动的介质共享。 [0292] STA medium access based on substantially the contention mode of operation of the uplink traffic transmission DCF is defined in the 802.11 specification, the 802.11 specification by using CSMA / CA (carrier sense with collision avoidance measured multiple access) and following a random backoff time following a busy medium case to allow automatic medium sharing. 然而,由于在固定的线路上的数据传送的特殊环境,已经对这种经典的DCF机制进行了若干改进。 However, due to the special environmental data transmitted over the fixed line, this classic already several improvements DCF mechanism.

[0293] 随机补偿的例程 [0293] random backoff routine

[0294] 期望初始化帧的传输的TDF STA应当调用(invoke)载波感测机制(在大多数情况下的物理载波感测)来确定介质的繁忙/空闲状态。 [0294] initialization frame desired transmission TDF STA should call (Invoke) carrier sensing mechanism (physical carrier sensing in most cases) to determine the busy / idle state of the medium. 如果介质繁忙,则STA应当推迟直到确定该介质在定义的时间段中不被中断地空闲。 If the medium is busy, the STA should be deferred until it is determined that the medium is idle without interruption in a defined time period. 在该介质的空闲时间之后,然后STA应当在传送之前对附加的推迟时间生成随机的补偿时段,除非补偿定时器已经包含了非零值,在这种情形下,不需要选择随机数并且不执行随机数的选择。 After the idle time of the medium, then the STA should be generated prior to transmission an additional deferral time for a random backoff period, unless compensated timer already contains a nonzero value, in this case, no need to select a random number and does not perform select random numbers. 该处理使得在已经推迟到相同串件(event)的多个STA之间的争用期间的冲突最小化。 This process enables the conflict during the contention between the string member has been delayed to the same (event) of the plurality of STA minimized.

[0295] Backoff Time = RandomO ^aSlotTime [0295] Backoff Time = RandomO ^ aSlotTime

[0296] 其中,Random O =从间隔[0,Cff]上的均匀分布抽取的伪随机整数,其中CW是aCffmin的值和aCWmax的值的范围内的整数,aCffmin < = Cff < = aCWmax。 Pseudo-random integer [0296] wherein, Random O = the interval [0, Cff] uniformly distributed on the extraction, where CW is an integer value within the range of values ​​of aCffmin and aCWmax, aCffmin <= Cff <= aCWmax.

[0297] Cff值的集合应当是开始于特定应用的aCWmin值,以2的整数幂减I依序增大,并继续向上且包括特定应用的aCWmax值。 [0297] should be set Cff value for a particular application starts aCWmin value to an integer power of 2 minus I sequentially increases, and the value of continuing upward and comprising aCWmax particular application. 更具体地,对于该协议的大多数应用环境,作为tdfMaximumContent1nStat1nNumber的基于争用的模式中的STA的最大数目是预先已知的,并且可以通过手动地配置和/或从TDF AP广播的管理帧来通知TDF STA,使得aCWmax值可以•被设置为tdfMaximumContent1nStat1nNumber 或者tdfMaximumContent1nStat1nNumber的倍数。 More specifically, for most applications the protocol environment, as the maximum number of contention based mode tdfMaximumContent1nStat1nNumber the STA is previously known, and may be configured and / or frame from the broadcast management TDF AP by manually notification TDF STA, such aCWmax value may be set to tdfMaximumContent1nStat1nNumber • tdfMaximumContent1nStat1nNumber or multiples thereof. 由此,当与其中aCWmax数值被盲设置的情形比较时,STA可以在相对短的补偿时间之后接入物理介质。 Accordingly, when compared with the case where blind aCWmax value is set, the STA can access to the physical medium after a relatively short time compensation.

[0298] 通过减少注册帧的争用窗口的尺寸,可用的补偿时段的数目将小于可用于数据帧的补偿时段的数目,这导致注册帧具有较高的优先级。 [0298] By reducing the size of a contention window frame is registered, the number of available time compensation will be less than the number of compensation period available for data frames, which leads to registration frame having a higher priority.

[0299] 应答例程 [0299] response routine

[0300] 对于在时分模式中操作的TDF STA,在给该特定的STA单独分配的上行链路时隙期间内,在有线环境中而不是在空中交换源自STA的帧,从而以具有非常好的信号质量的免于争用的方式来传送这些帧。 [0300] For the TDF STA operating in a time division mode, during which a specific STA separately allocated uplink time slot, rather than in a wired environment exchanging frames from the STA in the air, thereby having a very good the signal quality from contention way to transmit these frames. 结果,不必要定义应答(ACK)帧来确保MAC帧的递送的可靠性。 As a result, the definition of unnecessary acknowledgment (ACK) frame to ensure the reliability of delivery of a MAC frame.

[0301] 然而,对于在基于争用的模式中操作的TDF STA,因为在有线环境和无线信道之间的不同,物理的载波感测机制在固定的线路上工作不是很好,使得隐藏的站问题将导致处于争用模式中的不同TDF STA之间的许多冲突。 [0301] However, the TDF STA for contention based mode of operation, because of the different environment between a wired and wireless channels, the physical carrier sense mechanism is not working well on a fixed line, such that the hidden station the problem will result in many conflicts between the contention mode different TDF STA. 作为应对该类型故障的方式,本原理提出了使用肯定的(positive)应答机制。 As a way to deal with this type of fault, the principles proposed to use affirmative (positive) response mechanism.

[0302] 相应地,存在可用于部署的(cbploy)两种类型的应答: [0302] Accordingly, there is (cbploy) two types of response may for deployment:

[0303] 1.只要TDF AP接收到源自处于争用模式中的TDF STA的上行链路帧就 [0303] 1. As soon as the TDF AP receives an uplink frame from TDF STA in contention mode on

[0304] 立即从该AP进行肯定的应答,结果,如果没有接收到ACK,则TDF STA调度重新传送。 [0304] Now the affirmative response from the AP, the results, if not received ACK, the TDF STA scheduled retransmission.

[0305] 2.块ACK机制,其通过将若干应答聚集为一个帧中来改进信道的效率。 [0305] 2. Block ACK mechanism, which improves the efficiency of a frame by the channel response of the plurality of aggregation.

[0306] 存在两种类型的块Ack机制:立即的和延迟的。 [0306] Block Ack mechanism there are two types: immediate and delayed.

[0307] TDF AP在接收到来自处于争用模式中的TDF STA的若干上行链路帧之后,立即发送立即的块Ack,并且立即的块Ack适合于高带宽和低等待时间的业务量。 [0307] TDF AP after receiving the uplink from a plurality of frames in a contention mode TDF STA to the transmission block immediately immediately Ack, Ack and immediately blocks suitable for high bandwidth and low latency traffic.

[0308] 响应于若干成功接收的、在特定的基于争用的时隙期间内从TDF STA发送的上行链路帧,由TDF AP在与基于争用的上行链路时隙相同的超级帧内的下行链路时隙的刚开始处发送延迟的块Ack。 [0308] In response to a number of successfully received, based on a particular uplink frame during a contention slot transmitted from the TDF STA, the TDF AP in the uplink time slot based on the same contention with the super-frame downlink time slot beginning at block Ack transmission delay. 对于容忍中等等待时间的应用而言这是合适的,并且将用于在具有基于争用的介质接入控制和时分介质接入控制的该TDF协议中的大多数情况。 For applications latency tolerable medium which is suitable, and in most cases for the TDF protocol is time division-based access control and medium access control medium contention in. 块ACK帧可以是对处于争用模式中的一个特定的TDF STA的单播帧,以便向该TDF STA通知从它成功地接收到上行链路帧,并且块ACK帧也可以是广播帧或多播帧,以便向处于争用模式中的大量TDF STA通知从这些STA成功地接收到上行链路帧。 Block ACK frame may be unicast frames in a contention mode TDF STA in particular, to inform it successfully received from the uplink frame to the TDF STA, and the block ACK frame may be a frame or a broadcast multicast frame in order to notify a large number of the TDF STA in contention mode is successfully received from the uplink frame to the STA.

[0309] 操作模式转换例程 [0309] Operation mode switching routine

[0310] 一旦TDF STA启动(例如,当初始化时),其默认地进入基于争用的模式。 [0310] Once the TDF STA starts (e.g., when initializing), which enters the default mode based on contention. 然后,依赖于其应用需求、配置和/或与服务提供商的服务等级协定,它可以在向TDF AP发送注册帧并接收到具有接入准许的注册响应之后进入时分模式。 Then, depending on its applications, configuration and / or service level agreements with the service provider, it may send a registration frame to the TDF AP and receiving a registration response after entering an access grant time division mode.

[0311] 在图27中图示了从基于争用的模式向时分模式的转换。 [0311] illustrates a transition from the contention-based model to a time-division mode in FIG. 27. 如所示的,当处于基于争用的模式2710时,进行是否需要进入时分模式的确定(2712)。 As shown, when in the contention based mode 2710, for determining (2712) whether to enter a time division mode. 当回答“是”时,进行后续的关于在TDF STA已向TDF AP发送注册请求之后是否已经接收到肯定的响应的确定(2714)。 When the answer "Yes", the subsequent determination as to whether the registration request after the transmission of the TDF STA has TDF AP has received a positive response (2714). 如果已经接收到肯定的响应,则在2716进入时分模式。 If you have already received a positive response, then enter the time division mode in 2716. 如果确定2712或者2714导致否定,则系统保持在基于争用的模式2710。 If it is determined 2712 or 2714 results in a negative, the system remains in contention-based mode 2710.

[0312] 与图27所示的实施方案相反,TDF STA可以在其操作期间内从时分模式进入基于争用的模式。 [0312] Instead, TDF STA may enter based on the time division mode and the embodiment shown in FIG. 27 during the contention mode of operation thereof. 在图28中图示了该构思。 This concept is illustrated in FIG. 28. 如所示的,当处于时分模式2802中时,进行关于是否需要进入基于争用的模式的确定(2804)。 As shown, when in the time division mode 2802, a determination is made whether to enter contention based mode (2804). 如果“是”,则发送注销请求(2806),并且进入基于争用的模式2808。 If "yes", then send a deregistration request (2806), and enter the contention based mode 2808. 在不需要进入基于争用的模式的情形下(2804),系统保持在时分模式2802中。 Not need to enter in case of contention based mode at (2804), the system remains in a time division mode 2802.

[0313] 注意:类似的处理可应用于轮询的实施方案。 [0313] Note: a similar process may be applied to embodiments of the polling. 例如,在需要时,实施方案可以在轮询模式和时分模式之间切换。 For example, when required, embodiments can toggle between the polling mode and a time division mode.

[0314] 如上所述的,为了在现有的同轴电缆接入网络上提供划算的双向数据传送解决方案,已经提出了利用具有外部频率转换电路的成熟的商用(commodity)WiFi芯片组进行中贞递送的方法。 [0314] As described above, in order to provide a cost-effective solution for bidirectional data transfer over existing coaxial cable access network, it has been proposed (commodity) WiFi chipset having a mature commercial use external frequency conversion circuit is in Chen method of delivery. 采用该方法的系统被称作ADoC(同轴电缆上的非对称数据传输)系统,其中在电缆接入网络中必须部署遵从TDF(时分功能)协议的ADoC接入点(AP)和站(STA)。 System employing the method is referred to as ADoC (Asymmetric Data transmission on coaxial cable) system, wherein the deployment must comply with the TDF ADoC access points (time division function) protocol (AP) and a station (STA in the cable access network ). 如在此使用的,术语“ADoC系统”和“TDF系统”是可以互换的。 As used herein, the term "the ADoC system" and "the TDF system" are interchangeable. AP和STA经由处于分层级的树状结构的分路器而连接(参见图1)。 AP and the STA via a splitter in the hierarchical tree structure are connected (see FIG. 1). 以此方式,用户在家可以经由电缆接入网络接入远程IP核心网络。 In this way, users at home can access the remote IP core network via a cable access network. 图1图示了详细的网络拓扑。 FIG 1 illustrates a detailed network topology.

[0315] 在这种典型的基础设施接入网络架构中,存在遵从TDF协议的ADoC (TDF)接入点(AP),该ADoC接入点具有一个以太网接口(AP通过其与IP核心网络连接)、以及一个同轴电缆接口(AP通过其与电缆接入网络连接)。 [0315] In this exemplary infrastructure access network architecture, the presence of the TDF protocol compliant ADoC (the TDF) Access Point (AP), the access point has a ADoC Ethernet interface (AP via which IP core network connection), and a coaxial cable interface (AP connected to an access network through which the cable). 在接入网络的另一端,存在遵从TDF协议的ADoC(TDF) STA,其经由同轴电缆接口与电缆接入网络连接并且经由无线接口(例如,WLAN(无线局域网)接口)或有线接口(例如,以太网接口)与住宅LAN(局域网)连接。 At the other end of the access network, the presence of compliant ADoC (TDF) STA TDF protocol, which is connected via a coaxial cable access network and the interface via a wireless interface (e.g., WLAN (Wireless Local Area Network) interface) or a wired interface (e.g. Ethernet interface) and residential LAN (Local Area Network) connection.

[0316] 参照图29,用于ADoC STA 2900的硬件实施方案的本发明的实施方案是将两个设备(ADoC设备2903和WLAN设备2904)集成到捆绑的(colligate) STA中。 [0316] Referring to FIG 29, embodiments of the present invention for ADoC STA 2900 hardware embodiment is that two devices (the ADoC device 2903 and WLAN device 2904) integrated into a bundle (colligate) STA in. ADoC设备2903将与同轴电缆接口2906连接以支持电缆网络中的双向数据通信,而WLAN设备2904将与天线2908连接以支持WLAN网络中的双向数据通信。 The ADoC device 2903 is connected to the coaxial cable interface 2906 to support bi-directional data communication in a cable network, while the WLAN device 2904 connected to an antenna 2908 to support bi-directional data communication in a WLAN network. 如果需要,STA 2900将在ADoC设备2903和WLAN设备2904之间交换(swap)数据帧,以便使得WLAN网络中的PC能够经由ADoC STA接入因特网。 If desired, STA 2900 swap (the swap) data frames between ADoC device 2903 and WLAN device 2904, so that the WLAN network PC is able to access the Internet via the ADoC the STA.

[0317] 图29中呈现的STA架构需要用于信道编码器/解码器和数据处理的两个独立的设备来向家庭WLAN中的个人计算机提供因特网接入功能。 In the [0317] STA architecture presented in Figure 29 requires two separate devices for channel encoder / decoder and data processing to provide Internet access to the functionality of a personal computer in the home WLAN. 本原理提供了利用一个独立的双模式设备并且能够周期性地在ADoC模式和WLAN模式之间切换的解决方案来提供对本地网络的相同的接入功能。 This principle provides the use of a dual-mode device independent and can be periodically solution between ADoC mode and WLAN mode switching function to provide the same access to the local network.

[0318] 本原理的双模式ADoC设备可以支持ADoC模式和WLAN模式这两者并且可以周期性地在这两种模式之间切换。 [0318] The present principles dual mode ADoC device may support both ADoC mode and WLAN mode and may be switched between these two modes periodically. 在ADoC模式中,该双模式设备操作为ADoC STA ;而在WLAN模式中,其操作为WLANAP。 In ADoC mode, the dual mode ADoC device operates as the STA; in WLAN mode, it operates as WLANAP.

[0319] 通过使用本原理的单个双模式设备的解决方案,而不是图29中所示的经典的解决方案中的两个设备,嵌入有这种双模式ADoC设备的ADoC STA可以提供对本地网络的因特网接入功能。 [0319] solutions by using a single dual-mode apparatus of the present principles, rather than the classic solution shown in FIG. 29 of the two devices, this dual mode ADoC embedded ADoC device to the local network may provide the STA Internet access. 结果,与图29所示的两个设备的经典的解决方案相比,可以将带有经由电缆接入网络的因特网接入支持的ADoC As a result, as compared with two classic solutions for the apparatus shown in FIG. 29, can access via the Internet with a support ADoC cable access network

[0320] STA的制造成本降低原始成本的几乎一半。 [0320] STA reduced manufacturing cost almost half the cost of the original.

[0321 ] 为了实现本原理的双模式设备2902,修改了标准的ADoC设备2903并且在成熟的WLAN设备的基础上进行了演进(evolve)。 [0321] To achieve the dual mode device 2902 of the present principles, to modify the standard ADoC device 2903 and performs evolution (Evolve) on the basis of a mature WLAN device. 它与WLAN设备2904主要在两个方面不同:1)在物理实施方面,其RF在ADoC频带(大约IGHz)而不是标准802.11频带(大约2.4GHz)操作;以及2)在MAC(介质接入控制)层,它不利用常规的801.1lDCF(分布式协调功能)或PCF (点协调功能)机制来交换MAC帧。 It is mainly in two different WLAN device 2904: 1) In terms of physics, in which RF ADoC frequency band (about 1 GHz) instead of the standard 802.11 frequency band (about 2.4GHz) operation; and 2) in the MAC (Media Access Control ) layer, it does not use a conventional 801.1lDCF (distributed coordination function) or the PCF (point coordination function) mechanism to exchange MAC frames. 而是,其使用基于时分多路存取(TDMA)方法的TDF协议来传送MAC帧。 Instead, using a TDF protocol access (TDMA) method is based on time division multiplexing to transmit MAC frames.

[0322] 如在图30中所示的,将双模式ADoC设备2902与同轴电缆接口2906连接以与电缆接入网络互连,并且同时,与天线2908连接以支持WLAN网络中的双向数据通信。 [0322] As shown in FIG. 30, the dual mode ADoC device 2902 is connected to the coaxial cable interface 2906 interconnects with the cable access network, and at the same time, connected to an antenna to support bi-directional data communication in a WLAN network 2908 . 如果需要,ADoC STA 2900将交换在这两种模式期间从该双模式ADoC设备2902接收的数据帧。 If desired, ADoC STA 2900 during the exchange of data frames received from the two modes of the dual mode ADoC device 2902.

[0323] 双模式ADoC设备的硬件架构 [0323] architectures dual mode ADoC device

[0324] 根据在图31中所示的双模式ADoC设备2902的一个硬件实施方案,提供了切换器(switch) 3102,该切换器是被配置为在WLAN RF电路3104和ADoC RF电路3106之间切换的电路。 [0324] In accordance with a hardware dual mode ADoC device shown in FIG. 31 2902 program, provides the switch (switch) 3102, which is configured to switch between the WLAN RF circuit 3104 in the RF circuit 3106 and ADoC switching circuit. 可以由MAC层软件来控制切换器3102。 Switch 3102 may be controlled by the MAC layer software. 该实施方案需要修改WLAN芯片组并且将切换器3102添加到修改后的芯片组。 This embodiment requires modification WLAN chipset and the switch 3102 is added to the modified chipset.

[0325] 根据在图32中所示的另一硬件实施方案,可以在与设备的MAC基带部分3100的邻近间距方面改变切换器3102的位置。 [0325] In accordance with another hardware embodiment shown in Figure 32, you can change the position 3102 of the switch device with the MAC base band portion 3100 adjacent the spacing aspect. 在该实施方案中,转换器3108降低了WLAN的频带(作为WLAN RF 3104的输出并且大约为2.4GHz)至ADoC频谱(大约为IGHz并且在同轴电缆中可以到达相对长的距离)。 In this embodiment, the converter 3108 is reduced band WLAN (WLAN RF 3104 as the output and approximately 2.4GHz) to ADoC spectrum (about IGHz and in coaxial cables can reach a relatively long distance). 注意,MAC基带部分3100可以是被特征化为被配置来使得用户设备能够与双模式ADoC设备2902通信的通信设备。 Note that, MAC baseband part 3100 may be configured into a feature to enable a user device to a communication device with a dual mode ADoC device 2902 in communication.

[0326] 与图31的实施方案相反,图32的实施方案是在现有的WLAN芯片组之外,并且同样地,不需要修改WLAN芯片组。 [0326] embodiment of Figure 31 in contrast to the embodiment of FIG. 32 in addition to the existing WLAN chipset, and as such, do not need to modify the WLAN chipset.

[0327] 双模式ADoC设备的MAC层例程 Routine MAC layer [0327] The dual mode ADoC device

[0328] 在双模式ADoC设备2902中,基本的接入方法是TDF协议,其与ADoC设备2903的MAC层协议相同。 [0328] In the dual mode ADoC device 2902, an access method is substantially the TDF protocol, which is the same MAC layer protocol ADoC device 2903.

[0329] 如图34所示,每个TDF超级巾贞存在固定的tdfTotalTimeSlotNumber个时隙,其由以下组成:一个用于从ADoC AP向ADoC STA发送时钟同步信息的Sync时隙;一个用于发送对上行链路时隙分配的注册请求的争用时隙;由注册的ADoC STA —个接一个地向ADoC AP发送数据和某些管理帧所使用的tdfUplinkTimeSlotNumber个上行链路时隙;以及由ADoCAP向STA传送数据和某些管理巾贞所使用的tdfDownlinkTimeSlotNumber个下行链路时隙。 [0329] As illustrated, Chen towel per TDF superframe tdfTotalTimeSlotNumber presence of slots 34 is fixed, consisting of the following components: a clock for transmitting synchronization information from the ADoC STA Sync ADoC AP slot; one for transmit registration request contention slot assignment of uplink timeslots; a registered ADoC STA - one by one to the ADoC AP transmits data and some management frames used tdfUplinkTimeSlotNumber uplink time slots; and to the ADoCAP STA transmits data and some management Zhen towels used tdfDownlinkTimeSlotNumber downlink time slots.

[0330] 利用该TDF协议,处于STA模式中的双模式ADoC设备2902将只是在Sync时隙、争用时隙、所分配的上行链路时隙(例如,时隙k)和下行链路时隙期间是激活的(active)。 [0330] The use of TDF protocol, in the uplink time slot dual mode ADoC device 2902 STA mode will only Sync slot, contention slot, the allocated (e.g., time slot k) and the downlink slot period is active (active). 在剩余的时隙{即,从时隙2到时隙k ;以及从时隙k到时隙m},处于STA模式中的双模式ADoC设备在ADoC接口部分将是非激活的,并且结果,如果存在可用的被控制来将操作的RF从ADoC频带改变为WLAN频带的切换器,则可以切换到WLANAP模式。 In the remaining time slots {i.e., from time slot 2 to slot k; and k from time slot to time slot m}, in STA mode ADoC dual mode ADoC device in the inactive portion of the interface, and as a result, if the there is an available operation is controlled to change from an RF band ADoC frequency band WLAN switch, the mode can be switched to WLANAP.

[0331 ] 在双模式ADoC设备中的详细的MAC层例程如下: [0331] The MAC layer routine detailed in the dual mode ADoC device is as follows:

[0332] 1.一旦ADoC STA被启动并且被成功地分配了用于上行链路业务量传送的上行链路时隙(例如,时隙k),则双模式设备将计算是否k> (m+2)/2。 [0332] 1. Once the ADoC STA is started and is successfully allocated for the uplink time slot (e.g., slot k) transmitting uplink traffic, the dual mode device will calculate whether k> (m + 2) / 2. 如果k彡(m+2)/2,则意味着由Tmlh) 指示的持续时间[时隙2,时隙k)至少等于由 If San k (m + 2) / 2, is equal to the mean duration TMLH) indicated [slot 2, slot k) of at least

T (时隙k,时隙m] 指示的持续时间(时隙k,时隙m]。结果,双模式ADoC设备将选择在[时隙2,时隙k)时段期间内操作于WLAN模式;另一方面,如果k< (!!^^丨/^则意味着!'…!^,!^!^)短于T( WiSk,WiSm]。因此,双模式ADoC设备将选择在(时隙k,时隙m]时段期间内操作于WLAN模式。 . T (time slot k, slot duration m] instruction (slot k, the slot m] As a result, the dual mode ADoC device selection period [slot 2, slot k) period of operation in WLAN mode; on the other hand, if k <(!! ^^ Shu / ^ means! '...! ^! ^! ^) is shorter than T (WiSk, WiSm]. Thus, the dual mode ADoC device select (slot period k, slot m] period of operation in WLAN mode.

[0333] 注意,确定时段[时隙2,时隙k)是否大于时段(时隙k,时隙m]产生了准则(k_2)> (mk),这继而产生了准则k> (m+2)/2。另外,在所描述的实施方案中选择WLAN模式用于较长的时段。然而,其他实施方案在较短的时段期间操作于WLAN模式,或者在超级帧中多次在模式之间改变。 [0333] Note that the determination period [slot 2, slot k) is greater than a period (time slot k, the slot m] produced guidelines (k_2)> (mk), which in turn produces guidelines k> (m + 2 ) / 2. Further, in select embodiments described in WLAN mode for a longer period. However, other embodiments of the short period during the operation in the WLAN mode, or between a plurality of times in the super-frame mode change.

[0334] 2.在双模式ADoC设备决定在[时隙2,时隙k)时段期间内操作于WLAN模式时的情形下,对于TDF超级帧中其他时隙而言,双模式ADoC设备将作为ADoC STA操作于ADoC模式并且以依据标准的ADoC TDF协议的方式来动作。 [0334] 2. In the case of the dual mode ADoC device when determined over a period of [slot 2, slot k) period of operation in WLAN mode, the other for the TDF superframe time slot, the dual mode ADoC device as ADoC ADoC mode and the STA operating in the manner according to the standard protocol for operation of the TDF ADoC. 这样,当双模式ADoC设备在ADoC模式下进入时隙2时,它将配置RF切换器3102以将操作频率改变为WLAN频谱,并且充当WLANAP。 Thus, when the dual mode ADoC device 2 into the slot in ADoC mode, it will configure the RF switch 3102 to change the operating frequency spectrum of the WLAN, and acts as WLANAP. 然后,该双模式STA可以依据标准的WLAN例程与住宅WLAN网络中的WLANSTA通信。 Then, the dual mode STA may WLANSTA WLAN standard based communication routines and residential WLAN network.

[0335] 随着时间继续并且接近时隙k,并且在时隙k的开始之前没有剩余用于至少一个WLAN帧交换的时间,则双模式设备2902将向住宅WLAN中的所有STA发送CTS (清除发送)信号。 [0335] As time goes on and close to the slot k, and there is no remaining time for the at least one WLAN frame exchange before the start of the slot k, all STA dual mode device 2902 will residential WLAN transmit CTS (Clear send) signal. CTS帧中的持续时间字段将等于从该超级帧中的时隙k到下一超级帧中的时隙2的持续时间。 Duration field in the CTS frame will be equal to k from the super-frame time slots to the duration of the next super frame 2 slot. 当接收到CTS消息,所有的STA将更新它们的NAV并且在由CTS消息报告的持续时间中限制接入WLAN介质。 Upon receiving the CTS message, the STA will all update their NAV and the WLAN access medium to limit the duration of the CTS message reported. 以此方式,双模式设备将通过假装在从该超级帧中的时隙k到下一超级帧中的时隙2的时段内存在另一实体保留该WLAN介质来使得所有的STA在该持续时间内保持静默。 In this manner, the dual mode device STA will be such that all of the memory reserved by pretending another entity of the WLAN medium in the period from the slot k of the next super-frame in the super frame in the time slot duration 2 within remain silent. 在这之后,该设备将控制切换器将操作频谱改变回ADoC频带并且依据TDF例程操作。 After that, the control device will switch back to the operating spectral change based TDF ADoC frequency band and routine operations.

[0336] 当到了双模式设备2902进入下一超级帧中的时隙2之时,设备2902将重复相同的模式切换例程并且住宅WLAN中的STA也将再次开始使用该可用的基础设施WLAN来通信,这是因为由CTS指示的静默持续时间同时终止。 [0336] When a dual mode device 2902 to advance to the next super frame in the time slot 2, device 2902 will repeat the same mode switching routine and the residential WLAN STA will re-start using the infrastructure of the WLAN available communications, because silence duration indicated by the CTS simultaneously terminated.

[0337] 相反,对于其中双模式ADoC设备决定在(时隙k,时隙m]时段期间内操作于WLAN模式时的情形而言,对于TDF超级帧中其他时隙,双模式ADoC设备将作为STA操作于ADoC模式。当双模式ADoC设备2902在ADoC模式下进入时隙(k+Ι)时,它将配置切换器3102以将操作频率改变为WLAN频谱,并且充当AP。一旦随着时间继续而经过时隙(m-Ι)时,双模式设备将在时隙m期间内尝试发送CTS信号,其中持续时间字段等于从该超级帧中的下行链路时隙的开始处到下一超级帧中的时隙(k+Ι)的持续时间。在这之后,双模式设备2902将控制切换器2002以将操作频谱改变到ADoC频带并且依据ADoC TDF例程操作。由此,如之前所描述的,当双模式设备进入下一超级帧中的时隙(k+Ι)时,它将再次执行相同的模式切换例程。 [0337] In contrast, for the case when the dual mode ADoC device determines period (time slot k, the slot m] in which the period of operation in the WLAN mode, for the other time slots in a TDF superframe, as the dual mode ADoC device STA operating in ADoC mode. when the dual mode ADoC device 2902 into the slot (k + Ι) in ADoC mode, it configures the switch 3102 to change the operating frequency spectrum of the WLAN, and acts as the AP. as time continues once and passes through the slot (m-Ι), dual mode device will try to transmit the CTS signal during the time slot m, where the field is equal to the duration from the beginning of the super frame to a next downlink slot superframe timeslot (k + Ι) duration. after that, the dual mode device 2902 controls the switch 2002 so as to change the operation of the spectrum to the TDF ADoC ADoC frequency band and based on the routine operation. thus, as previously described when the dual mode device enters the next super-frame time slot (k + Ι), it will again perform the same mode switching routine.

[0338] 根据一个实施方案,将本原理的实施方案的双模式设备2902集成到图10中的调制解调器(例如,1010、1020等等)中。 [0338] According to one embodiment, the dual mode device of the present embodiment of the principles of the embodiment 2902 in FIG. 10 integrated modem (e.g., 1010, 1020, etc.). 图33示出了这种实施方案的示例。 FIG 33 shows an example of this embodiment. 同样,当双模式设备2902正操作或正执行标准的WLAN通信时(即,当操作于合适的时间段中时),该设备允许用户PC连接到因特网。 Similarly, when the dual mode WLAN communication device 2902 is operating or is performing a standard (i.e., when the operation in the period when appropriate), the device allows the user PC connected to the Internet. 在该实施方案中,PC用户将通过经过WLAN接口在无线介质上向调制解调器发送对因特网地址的请求来请求因特网地址(例如,网页),并且2)调制解调器经由ADoC接口在电缆网络上向ADoC AP,然后向路由器、向因特网中继该请求。 In this embodiment, PC user to request an Internet address (e.g., web pages) by passing through the WLAN interface transmits a request for an Internet address to the modem over a wireless medium, and 2) a modem via the ADoC interface to a ADoC the AP over a cable network, then the router relays the request to the Internet.

[0339] 在该实施方案中,双模式设备2902包括ADoC接口或者设备1018而不是以太网接□。 [0339] In this embodiment, the dual mode ADoC device 2902 includes a device interface or Ethernet interface 1018 instead □.

[0340] 当调制解调器的双模式设备操作于WLAN( S卩,无线模式)时,该设备充当WLAN AP,并且个人计算机充当WLAN站,其中双模式设备经由调制解调器和个人计算机之间的无线链路从个人计算机接收请求。 [0340] When the modem is operating in the dual mode WLAN device (S Jie, wireless mode), the WLAN device acts as the AP, and the personal computer to function as WLAN station, wherein the dual mode device via a wireless link between the modem and the personal computer from the personal computer receives the request. 双模式设备将所接收的请求中继到桥接器,桥接器基于该请求的IP分组中的目的地地址信息来确定双模式设备是否需要经由该双模式设备中的ADoC接口在电缆上将该请求发送出去,或者确定双模式设备是否需要将该请求发送至住宅网络中的其他PC。 Dual mode device will relay the received request to the bridge, the bridge based on a destination address of the IP packet request information to determine that the dual mode ADoC device of the interface if the request requires the dual mode device via the cable sent, or whether the dual-mode device needs to send the request to another PC in the home network. 然后,桥接器将请求发送回(back down)双模式设备。 Then, the bridge sends the request back (back down) dual mode device.

[0341] 为了用于建立外部连接的请求,双模式设备保持该请求直到双模式设备进入ADoC模式(即,有线模式),在此时双模式设备充当ADoC站并且经由ADoC接口在有线网络上向ADoC AP发送出该请求。 [0341] In order to request for establishing an external connection, the dual mode device holding device enters request until the dual mode ADoC mode (i.e., wired mode), in this case acts as a dual mode ADoC station apparatus via the wired network interface ADoC to ADoC AP sends out the request.

[0342] 为了用于建立与住宅网络中的其他PC的内部连接的请求,双模式设备保持该请求直到双模式设备进入WLAN模式(即,无线模式),在此时它充当WLAN AP并且经由WLAN接口在无线介质上向目的地PC发送出该请求。 [0342] In order to request to establish a connection inside a home network of the other PC, dual mode device holding the request until the dual mode device enters WLAN mode (i.e., wireless mode), at which time it acts as a WLAN via a WLAN AP the interface sends a request to the destination PC over a wireless medium.

[0343] 当双模式设备从电缆网络中的相关联的ADoC AP或者本地网络中的其他PC接收到任何响应时,将执行反向处理。 [0343] When a dual mode device or received from the local network ADoC AP cable network associated with any other PC in response, performs the reverse process.

[0344] 如从前述的讨论中清楚的,在至少某些实施方案中,可以使用(例如)公共的电路或软件来执行与WLAN模式和ADoC模式两者相关联的大量处理。 [0344] As apparent from the foregoing discussion, in at least some embodiments, may be used (e.g.) a common circuitry or software to perform the bulk of the processing ADoC mode and WLAN mode and associated with both. 例如,可以通过公共的单元来执行对来自两种模式的数据的接收和拆包(depacketize)以及在两种模式之间转换。 For example, the data may be performed from both modes of receiving and unpacking (depacketize) by a common unit, and a conversion between the two modes. 潜在地需要这种转换的各种应用包括:(I)从计算机接收WLAN模式输入(诸如对因特网接入的请求)并使用ADoC模式将该输入发送出去的调制解调器,以及⑵在ADoC模式中接收所请求的因特网数据并使用WLAN模式将该数据发送至计算机的调制解调器。 Potentially requiring such conversion variety of applications including: (I) an input from a computer to receive a WLAN mode (such as a request for Internet access) and sends out the input ADoC mode using the modem, and receiving ⑵ in ADoC mode the requested Internet data using the WLAN mode and sends the data to a computer modem. 这些情境将典型地涉及在不同协议之间的转换。 These situations will typically involve the conversion between different protocols.

[0345] 双模式设备的各种实施方案使用通信单元来使能一个或多个模式中的通信。 [0345] Various embodiments of dual mode device using the communication means to enable communication or a plurality of modes. 通信单元可以包括,例如,双模式ADoC设备2902,或者其一部分,例如,MAC基带3100、WLAN RF3104,以及ADoC RF 3106。 The communication unit may include, for example, the dual mode ADoC device 2902, or a portion thereof, eg, MAC baseband 3100, WLAN RF3104, and ADoC RF 3106.

[0346] 注意,调制解调器不仅可以包括如上所述的双模式设备,而且可以包括使得能够穿过其他网络(除了WLAN和ADoC之外)进行通信的接口。 [0346] Note that may include not only dual-mode modem device as described above, and may include other networks enabling through (and in addition to the ADoC WLAN) interface for communicating. 这样的其他网络可以包括例如以太网网络。 This may include other networks such as Ethernet networks. 相应地,调制解调器可以包括例如使得能够穿过WLAN和ADoC网络通信的双模式设备2902以及以太网接口1015。 Accordingly, the modem may comprise, for example, through a dual mode device enabling WLAN ADoC network communications and Ethernet interface 2902, and 1015.

[0347] 各种实施方案(例如)以一种形式或另一形式访问数据。 [0347] Various embodiments (e.g.) to access data in one form or another. 术语“访问”被用于广义的术语,包括例如以某种方式获得、检索、接收、操纵(manipulate)、或处理。 The term "access" is a broad term used, including, for example, one way or another, retrieving, receiving, manipulating (Manipulate), or processing. 相应地,(例如)对访问数据的描述是对可能的实施方案的广义的描述。 Accordingly, (e.g.) a description of the data access is a broad description of a possible embodiment.

[0348] 可以将所描述的实施方案的特征和方面应用于各种应用。 [0348] The features and aspects of the embodiments can be of the described embodiment is applied to various applications. 应用包括,例如,如上所述,通过使用在电缆上传输以太网信号的通信构架(Ethernet-over-cable communicat1nframework),个人使用他们家中的主机设备与因特网通信。 Applications include, for example, as described above, the frame transmission communication (Ethernet-over-cable communicat1nframework) in the Ethernet signal by using a cable, Internet communication host device for personal use their home with. 然而,在此描述的特征和方面可以适配于其它应用领域,并且相应地,其它应用是可能的和可预见的。 However, features and aspects described herein may be adapted for other application areas and, accordingly, other applications are possible and envisioned. 例如,用户可以位于他们家之外,诸如,例如位于在公共场所中或者在他们工作处。 For example, the user may be located outside of their home, such as, for example, is located in a public place or at their work place. 相应地,可以使用除了以太网和电缆之外的协议和通信介质。 Accordingly, it may be used in addition to the cable and Ethernet protocols and communication media. 例如,可以通过以下方式(以及使用相关联的协议)来发送和接收数据,所述方式有光纤电缆、通用串行总线(USB)电缆、小型计算机系统接口(SCSI)电缆、电话线、数字订户线路/环(DSL)线路、卫星连接、视线(line-of-sight)连接、以及蜂窝连接。 For example, the following manner may be transmitted (and associated protocols used) and receiving data in a manner that optical fiber cables, universal serial bus (USB) cables, small computer system interface (SCSI) cables, telephone lines, digital subscriber line / loop (DSL) lines, satellite connections, line of sight (line-of-sight) connections, and cellular connections.

[0349] 可以以例如方法或处理、装置、或软件程序来实施在此描述的实施方案。 [0349] may be, for example, a method or process, an apparatus, or a software program to implement the embodiments described herein. 即使仅仅在单一形式的实施方案的上下文中讨论(例如,仅仅作为方法讨论的),也可以以其它形式(例如,装置或程序)来实施所讨论的实施方案的特征。 Even if only discussed (e.g., discussed only as a method) in the context of a single embodiment form of embodiment, it may also be in other forms (e.g., an apparatus or program) to implement the features of the embodiments discussed. 可以以例如合适的硬件、软件和固件来实施装置。 May be, for example, suitable hardware, software, and firmware embodiment of the apparatus. 可以在例如以下装置中实施所述方法,该装置诸如是例如通常指代处理设备的处理器,例如包括计算机、微处理器、集成电路或者可编程逻辑器件。 The method may be implemented, for example, the following apparatus, the apparatus such as, for example, generally refers to processing apparatus, comprising a computer, for example, a microprocessor, an integrated circuit or a programmable logic device. 处理设备还包括通信设备,诸如,例如,计算机、蜂窝电话、便携式/个人数字助理(“PDA”)、以及便利于在最终用户之间进行信息通信的其它设备。 Processing apparatus further comprises a communication device, such as, for example, computers, cell phones, portable / personal digital assistants ( "PDA"), as well as for other devices to facilitate communication of information between end users.

[0350] 在此描述的各种处理和特征的实施方案可以在各种不同的装备或者应用(具体地,例如,与数据传送和接收相关联的装备或应用)中得到体现。 [0350] embodiments of the various processes and features described herein may be reflected in a variety of different equipment or applications (particularly, for example, data transmission and reception with associated equipment or applications). 装备的例子包括视频编码器、视频解码器、视频编解码器、网络服务器、机顶盒、膝上型计算机、个人计算机以及其它通信设备。 Examples of equipment include video coders, video decoders, video codecs, web servers, set-top boxes, laptops, personal computers and other communication devices. 如应清楚的,所述装备可以是移动的并且甚至被安装在移动车辆中。 As should be clear, the equipment may be mobile and even installed in a mobile vehicle.

[0351] 另外,可以通过由处理器执行的指令来实施所述方法,而这样的指令可以被存储在处理器可读的介质上,诸如,例如集成电路、软件载体或者其它存储设备(诸如,例如硬盘、致密盘、随机存取存储器(“RAM”)或者只读存储器(“ROM”))。 [0351] Further, the method may be implemented by instructions performed by a processor, and such instructions may be stored on a processor-readable medium, such as, for example, an integrated circuit, a software carrier or other storage device stores (such as, For example a hard disk, a compact diskette, a random access memory ( "RAM") or read only memory ( "ROM")). 所述指令可以形成在处理器可读的介质上有形体现的应用程序。 The instructions may form an application program on a processor-readable medium tangibly embodied. 如应清楚的,处理器可以包括具有例如用于执行处理的指令的处理器可读介质。 As should be clear, a processor may comprise, for example, having a processor for executing the processing instructions readable medium.

[0352] 关于存储设备,注意贯穿所描述的实施方案的各种设备典型地包括一个或多个存储设备。 [0352] For storage devices, note that a variety of devices throughout the described embodiment typically include one or more storage devices. 例如,尽管没有明确地指示,调制解调器1010和1020,和AP 1030(以及各种其他元件)典型地包括一个或多个用于存储数据的存储单元。 For example, although not explicitly indicated, modem 1010 and 1020, and AP 1030 (and various other components) typically include one or more memory cells for storing data. 存储可以是例如电子的、磁的、或者光学的。 May be stored, for example, an electronic, magnetic, or optical.

[0353] 如根据前述的公开将显然的,实施方案还可以产生被格式化以承载例如可以被存储或传送的信息的信号。 [0353] As will be apparent, embodiments can also be generated by a signal formatted to carry information, for example, stored or transmitted in accordance with the foregoing disclosure. 所述信息可以包括,例如用于执行方法的指令、或者由所描述的实施方案之一产生的数据。 The information may include, for example, instructions for performing a method, or data produced by one of the described embodiments. 这样的信号可以被格式化为例如电磁波(例如,使用频谱的射频部分)或者被格式化为基带信号。 Such a signal may be formatted, for example, an electromagnetic wave (e.g., using a radio frequency portion of spectrum) or as a baseband signal is formatted. 所述格式化可以包括例如编码数据流、根据各种帧结构中的任一种对编码后的数据流进行分组化(packetize)、以及利用分组化的流调制载波。 The formatting may include, for example, the coded data stream, the data stream encoded in accordance with any of various packetized frame structure (packetizes), and the use of the packet stream modulate a carrier. 信号承载的信息可以是例如模拟或数字信息。 Signal bearing information may be, for example, analog or digital information. 如已知的,可以通过各种不同的有线或者无线链路来传送信号。 As is known, a signal may be transmitted through a variety of different wired or wireless links.

Claims (22)

  1. 1.一种在多种介质上通信的装置,所述装置包含: 通信单元,用于在包括无线介质和有线介质的多种介质上通信,该通信单元可操作于:(I)无线模式,使用无线协议在无线介质上通信;以及(2)有线模式,使用所述无线协议的变型在有线介质上通信;以及切换器,将所述通信单元在无线模式和有线模式之间切换, 其中在时分功能超级帧的时隙中的两个时段之一的期间进入所述无线模式,其中所述时分功能超级帧包括用于发送时钟同步信息的同步时隙和多个公共时隙,每个公共时隙具有相同持续时间。 1. A plurality of communication apparatus on the medium, the apparatus comprising: a communication unit for communication, the communication unit is operable in a variety of media include wired media and wireless media: (the I) wireless mode, using a wireless protocol over a wireless communication medium; and (2) a wired mode, using the wireless communications protocol variations on the wired medium; and a switching unit, the communication unit to switch between a wired mode and a wireless mode, wherein function into the time division during one of slots in the superframe period of the two wireless mode, wherein the super frame comprises a time division function for transmitting synchronization time slot and a plurality of clock synchronization information common slot, each of the common slot has the same duration.
  2. 2.根据权利要求1所述的装置,其中所述通信单元包含: 通信设备,连接到所述切换器并且被配置为使得用户设备能够与所述通信单元进行通ί目; 无线局域网WLAN设备,连接到所述切换器,该WLAN设备被配置为经由天线连接到无线网络; 有线网络设备,连接到所述切换器,该有线网络设备被配置为连接到有线网络。 2. The apparatus according to claim 1, wherein said communication unit comprising: a communication device connected to said switch and is configured such that the user equipment to pass ί mesh with the communication unit; a WLAN device, connected to the switch, the WLAN device is configured to connect to a wireless network via the antenna; wired network device, connected to the switch, the wired network device is configured to connect to a wired network.
  3. 3.根据权利要求2所述的装置,其中所述有线网络设备被配置为连接到同轴电缆网络。 3. The apparatus according to claim 2, wherein the wired network device is configured to connect to a coaxial cable network.
  4. 4.根据权利要求1所述的装置,其中在有线模式中所述无线协议的变型包含时分接入机制。 4. The apparatus according to claim 1, wherein the radio protocol in the wired mode modification comprises time division access mechanism.
  5. 5.根据权利要求1所述的装置,其中在有线模式中所述无线协议的变型包含WLAN分组结构。 5. The apparatus according to claim 1, wherein the radio protocol in the wired mode variations comprising WLAN packet structure.
  6. 6.根据权利要求4所述的装置,其中在时分功能超级帧的时隙中的至少一个所分配的时隙期间,进行有线模式下所述无线协议的变型的通信。 6. The apparatus as claimed in claim 4, wherein the time slot in a time division function super-frames during at least one time slot allocated, the communication modifications wired mode wireless protocol.
  7. 7.根据权利要求1所述的装置,其中所述通信单元包含: 无线局域网WLAN设备,连接到所述切换器; WLAN天线,连接到所述切换器; 通信设备,连接到所述WLAN设备;以及转换器,连接到所述切换器并且被配置为被连接到有线网络并将无线模式的频带转换为有线模式的频带。 7. The device according to claim 1, wherein said communication unit comprises: a WLAN device, coupled to said switch; WLAN antenna is connected to the switch; communication device, connected to the WLAN device; and a converter coupled to the switch and configured to be connected to a wired network band and the band switching mode wireless wired mode.
  8. 8.根据权利要求1所述的装置,其中在所述两个时段中所选择的较长的一个时段期间进入所述无线模式。 8. The apparatus according to claim 1, entering the wireless mode during a period in which the longer of the two periods selected.
  9. 9.根据权利要求8所述的装置,其中: 时分功能超级帧的时隙进一步包含多个上行链路时隙,以及所述两个时段在所述多个上行链路时隙内。 9. The apparatus according to claim 8, wherein: the super frame time division slots function further comprises a plurality of uplink time slots, and the two periods within the plurality of uplink time slots.
  10. 10.根据权利要求1所述的装置,其中所述装置是时分功能站的一部分。 10. The apparatus according to claim 1, wherein said device is part of a time division function station.
  11. 11.根据权利要求1所述的装置,其中所述通信单元被进一步配置为使用帧结构来通信,所述帧结构至少支持两种通信模式,所述通信模式包括:时分模式,其中为设备保留帧结构中的时隙;和基于争用的模式,其中由多个设备使用帧结构中的争用时隙进行数据通ί目。 11. The apparatus according to claim 1, wherein said communication unit is further configured to communicate using a frame structure, the frame structure supports at least two communication modes, the communication mode comprising: a time division mode, wherein the device is reserved time slots in the frame structure; and a contention based mode, wherein the data entry through ί time slot by a plurality of devices using a frame structure contention.
  12. 12.根据权利要求11所述的装置,其中所述装置是时分功能站的一部分,所述时分功能站被配置为:通过在基于争用的模式期间在争用时隙中从所述时分功能站向时分功能接入点发送数据来使用所述帧结构。 12. The apparatus according to claim 11, wherein said device is part of a time division function station, the division function station is configured to: during mode by contention-based contention slot in a time division function from the station using time division transmission data to the access point function of the frame structure.
  13. 13.根据权利要求1所述的装置,其中所述通信单元被进一步配置为使用帧结构来通信,所述帧结构至少支持两种通信模式,所述通信模式包括:时分模式,其中为设备保留帧结构中的时隙;和轮询模式,其中由多个设备使用所述帧结构中的轮询时隙进行数据通信。 13. The apparatus according to claim 1, wherein said communication unit is further configured to communicate using a frame structure, the frame structure supports at least two communication modes, the communication mode comprising: a time division mode, wherein the device is reserved time slots in the frame structure; and the polling mode, wherein the frame structure used by a plurality of devices in a polling data communication time slot.
  14. 14.根据权利要求13所述的装置,其中所述帧结构支持第三种通信模式,所述第三种通信模式是其中由多个设备使用所述帧结构中的争用时隙进行数据通信的基于争用的模式。 14. The apparatus according to claim 13, wherein the frame structure supports a third communication mode, wherein the third communication mode is used by a plurality of devices in the frame structure of the data communication contention slots contention-based mode.
  15. 15.根据权利要求1所述的装置,其中所述通信单元被进一步配置为: 接收来自第一源的分组,来自第一源的分组具有特定的格式; 接收来自第二源的分组,来自第二源的分组具有所述特定的格式;以及将来自第一源的分组和来自第二源的分组封装为具有不同格式的封装后的分组。 15. The apparatus according to claim 1, wherein said communication unit is further configured to: receive a packet from a first source, a first packet from a source having a specific format; receiving a packet from a second source, from the first second source packet having a specific format; and a packet from a first source and a second source packet is encapsulated from encapsulated packets having different formats.
  16. 16.根据权利要求15所述的装置,其中: 所述特定格式包含以太网格式, 所述不同格式包含被适配于无线传送的WLAN格式, 所述通信单元被进一步配置为在同轴电缆上传送封装后的分组, 传送封装后的分组包含: (a)在时分多路复用方案的时隙中传送封装后的分组,以及(b)在承载电视数据的信号上根据频分多路复用方案传送封装后的分组,所述频分多路复用方案规定:在用于封装后的数据的频率范围中传送所述封装后的分组,并且在不同频率范围中传送所述电视数据。 16. The apparatus according to claim 15, wherein: said specific format comprising an Ethernet format, the different format is adapted to comprise a WLAN wireless transmission format, the communication unit is further configured to upload a coaxial cable after sending the packet encapsulated packet transmitted after the package comprising: (a) transmitting a packet after encapsulation in a time slot in a time division multiplexing scheme, and (b) in the television signal bearing data in accordance with frequency division multiplexing encapsulated packet transmission scheme, the frequency division multiplexing scheme provides: transport packet encapsulated in the frequency range of the data for the package, and transmitting the television data in different frequency ranges.
  17. 17.一种在多种介质上通信的方法,所述方法包含: 在包括无线介质和有线介质的多种介质上通信,所述通信使用以下中的一个或多个:(I)无线模式,使用无线协议在无线介质上通信;以及(2)有线模式,使用所述无线协议的变型在有线介质上通信;以及在无线模式和有线模式之间进行切换, 其中在时分功能超级帧的时隙中的两个时段之一的期间进入所述无线模式,其中所述时分功能超级帧包括用于发送时钟同步信息的同步时隙和多个公共时隙,每个公共时隙具有相同持续时间。 17. A method for communication, the method comprising on a variety of media: the following one or more of a variety of media includes wired media and wireless media communication, said communication: (the I) wireless mode, using a wireless protocol over a wireless communication medium; and (2) a wired mode, using the wireless communications protocol variations on the wired medium; and switching between a wired mode and a wireless mode, wherein the slots in the super frame division function entering during one of the two periods in the wireless mode, wherein the super frame comprises a time division function for transmitting clock synchronization information synchronized time slots and a plurality of common slots, each slot has the same duration public.
  18. 18.根据权利要求17所述的方法,其中: 所述通信包含在无线模式或有线模式中特定的一种模式下接收通信数据, 所述切换包含从两种操作模式中所述特定的一种模式切换到所述两种操作模式中的另一种模式,以及所述通信进一步包含(I)将所接收的通信数据从与所述两种操作模式中所述特定的一种模式相关联的协议转换为与所述两种操作模式中的所述另一种模式相关联的协议,以及(2)在所述两种操作模式中的所述另一种模式下传送所接收的通信数据。 18. The method according to claim 17, wherein: the communication comprises receiving communication data in a wireless mode or wired mode specific mode, the switching from the two modes of operation comprising said particular one mode is switched to another mode of the two modes of operation, and said communication further comprises (I) the communication data received from said particular one mode of the two modes of operation associated protocol conversion is associated with the two modes of operation in another mode associated protocol, and a communication data transmission (2) according to the two modes of operation of another mode is received.
  19. 19.根据权利要求17所述的方法,其中有线的操作模式是时分功能通信系统的一部分。 19. The method of claim 17, wherein the wired mode of operation is part of a time division communication system according to the function.
  20. 20.一种在多种介质上通信的装置,所述装置包含: 用于在包括无线介质和有线介质的多种介质上通信的部件,所述用于通信的部件可操作于:(1)无线模式,使用无线协议在无线介质上通信;以及(2)有线模式,使用所述无线协议的变型在有线介质上通信;以及用于在无线模式和有线模式之间进行切换的部件, 其中在时分功能超级帧的时隙中的两个时段之一的期间进入所述无线模式,其中所述时分功能超级帧包括用于发送时钟同步信息的同步时隙和多个公共时隙,每个公共时隙具有相同持续时间。 20. An apparatus for communication in a variety of media, said apparatus comprising: means for a variety of media include wired media and wireless media communication, communication means for the operative to: (1) wireless mode, using a wireless protocol over a wireless communication medium; and (2) a wired mode, using the wireless communications protocol variations on the wired medium; and means for switching between a wired mode and a wireless mode, wherein function into the time division during one of slots in the superframe period of the two wireless mode, wherein the super frame comprises a time division function for transmitting synchronization time slot and a plurality of clock synchronization information common slot, each of the common slot has the same duration.
  21. 21.根据权利要求20所述的装置,其中: 所述用于通信的部件被配置为:在无线模式或者有线模式中特定的一种模式下接收通信数据; 所述用于切换的部件被配置为:从两种操作模式中所述特定的一种模式切换到所述两种操作模式中的另一种模式,以及所述用于通信的部件进一步被配置为:(I)将所接收的通信数据从与所述两种操作模式中所述特定的一种模式相关联的协议转换为与所述两种操作模式中的所述另一种模式相关联的协议,以及(2)在所述两种操作模式中的另一种模式下传送所接收的通信数据。 21. The apparatus according to claim 20, wherein: said means for communicating is configured to: receive communication data in a wireless mode or wired mode in a specific pattern; the means for switching is configured is: the two modes of operation from a certain mode to another mode of the two modes of operation, and said means for communicating is further configured to: (the I) the received another mode associated with the conversion of the two modes of operation of the particular data communication mode associated with the two modes of operation from the protocol in the protocol, and (2) in the another data transmission at a communication mode received in said two modes of operation.
  22. 22.根据权利要求20所述的装置,其中所述有线操作模式是时分功能通信系统的一部分。 22. The apparatus according to claim 20, wherein the wired mode of operation is a function of a part of a time division communication system.
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