201216644 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及資訊網路，更具體地說，涉及一種在構成通 信網路的通信線路（如同轴電纜）上發送資訊（如媒體資訊 )的方法。 【先前技術】 [0002] 眾所周知一般家庭網路技術採用同軸電纜。同軸電纜多 媒體聯盟（MoCATM)在其網站www. mocal 1 iance. org上 為通過家庭内已有同轴電纜進行數位視頻和娛樂聯網提 供了適當的規範（MoCA 1.1)，該規範已向開放成員發佈 。本發明參考MoCA 1.1規範並結合其全部内容。 [0003] 同軸電纜家庭網路接進家庭同軸電纜上可獲得的大量未 使用帶寬。美國超過70%的家庭在家庭基礎架構上安裝有 同軸電欖。一個或多個主要娛樂消費位置諸如客廳、多 媒體至和主臥中’許多都已佈設有同轴電缓，這對於網 路配置疋理想的。家庭網路技術使得家庭成貝能夠使用 14-基礎架構作為網路系統’並以高Q〇s(服務品質）傳送 娛樂和資訊節目。 圆肖軸電境家庭網路技術提供高速（27〇mbps)、高q〇s和由 遮罩找連接結合分組資料級加密肋發展水準而帶 來的固有的安全性。同軸魏在設計上是用於承載高帶 寬視頻。如今，同軸電境通常用於安全地傳送每日數百 萬美元的付費觀看和高價的（Premium)視頻内容。同軸 電瘦家庭網路還可用作多個無線接入點的主幹，用於將 無線網路的覆蓋範_展到好的整個住宅。 099133945 表單編號A0101 第4頁/共36頁 1003121584-0 201216644 [0005] 同軸電纜家庭網路通過已有的同軸電緵提供至家庭中視 頻設備所在處的恒定、高呑吐量、高品質連接。同轴電 纜家庭網路為數位娛樂提供主要鏈結，且還可以與其他 有線和無線網路合作以將娱樂體驗遍及家庭之中。 [0006] 當前’同軸電纜家庭網路與接入技術協作工作，諸如 ADSL和VDSL服務或光纖到戶（FTTH)，這些接入通常通過 雙絞線或光纖進入家庭’工作頻段對於ADSL從幾百KHz至 8. 5MHz，對於VDSL為12MHz。當服務通過xdsl或FTTH到 0 達家庭後’可通過同轴電纜家庭網路技術和室内同轴電 纜路由至視頻設備。有線業務’諸如視頻、音頻和互聯 網接入可以由有線運營商通過同轴電缆提供給家庭，並 使用家庭内佈設的同軸電缆到達家庭的各個房間中的各 個有線業務消費設備。一般而言，同轴電纜家庭網路類 型業務與有線業務在不同的頻率上並行運行。 [0007] 因而期望通過MoCA家庭網路連接的MoCA設備所選擇的 SRV節點選擇來達到選擇目的。 〇 、 【發明内容】 [0008] 本發明提供了 一種使用通過MoCA家庭網路連接的MoCA設 備來選擇被選服務節點（SSN)的系統和/或方法’詰合至 少一幅附圖做了清楚的描述，並在權利要求中進行了完 整的定義。 [0009] 根據本發明的一個方面’提供一種使用家庭通信網路中 的節點的方法，所述通信網路包括多個節點和同軸電缆 ，所述方法包括. 099133945 表單編號A0101 第5頁/共36頁 1003121584-0 201216644 [0010] 使用入口節點提交詢問消息，所述詢問消息在L 2 Μ E協定 中設備屬性資訊要素的被選擇欄位中，所述入口節點是 需要高級服務的節點，且所述入口節點不知道多個節點 中的哪一個節點是選擇用來支援網路上高級服務的節點 ，所述被選擇欄位包括供應商特有欄位； [0011] 向多個節點分發所述詢問消息； [0012] 回應所述詢問消息，確定所述多個節點中哪些能夠選來 支援網路上的高級服務； [0013] 傳播有關多個節點中哪些能夠選來支援網路上的高級服 務的資訊至能夠選來支援網路上的高級服務的多個節點 中的每一個節點；以及 [0014] 確定多個節點中是否有一個節點已選中用來支援網路上 的高級服務。 [0015] 作為優選，所述供應商特有欄位包括TLV類型、TLV長度 和T L V值欄位中的至少一個。 [0016] 作為優選，所述方法包括：如果在詢問結束時尚無選中 的節點，使用入口節點選擇自身來支援網路上高級服務 〇 [0017] 作為優選，所述方法包括：使用入口節點向網路發送有 關入口節點自己選擇的通告。 [0018] 作為優選，所述方法包括：如果在詢問結束時尚無選中 的節點，選擇具有最小節點識別字（ID)的節點來支援網 路上的高級服務。 099133945 表單編號A0101 第6頁/共36頁 1003121584-0 201216644 [0019] 作為優選，所述方法包括：向所述多個節點通告，具有最 小節點識別字的節點已選中用來支援網路上的高級服務 〇 [0020] 作為優選，所述方法包括：如果選中的節點與網路之間 的通信鏈結終止，則通過網路通告向網路發送通信。 [0021] 根據本發明的一個方面，提供一種使用家庭通信網路中 的節點的方法，所述通信網路包括多個節點和同軸電纜 ，所述方法包括： 〇 [0022] 使用入口節點提交詢問消息，所述詢問消息在L2ME協定 中設備屬性資訊要素的TLV類型、TLV長度和TLV值欄位 中的至少一個中，所述入口節點是需要高級服務的節點 ，且所述入口節點不知道多個節點中的哪一個節點是選 擇用來支援網路上高級服務的節點，所述被選擇欄位包 括供應商特有攔位； [0023] 向多個節點分發所述詢問消息； t) [0024] 回應所述詢問消息，確定所述多個節點中哪些能夠選來 支援網路上的高級服務； [0025] 傳播有關多個節點中哪些能夠選來支援網路上的高級服 務的資訊至能夠選來支援網路上的高級服務的多個節點 中的每一個節點；以及 [0026] 確定多個節點中是否有一個節點已選中用來支援網路上 的高級服務。 [0027] 作為優選，所述方法包括：如果在詢問結束時尚無選中 099133945 表單編號A0101 第7頁/共36頁 1003121584-0 201216644 的節點使用入口節點選择自身來支援網路上高級服務 〇 [0028] [0029] [0030] [0031] [0032] [0033] [0034] [0035] 作為優選’所述方法包括：使用人口節點向網路發送有 關入口節點自己選擇的通告。 作為優選，所述方法包括：如果在詢問結束時尚無選中 的即點，選擇具有最小節點識別字（ID)的節點來支援網 路上的高級服務。 作為優選’所述方法包括：向所述多個節點通告，具有最 小節點賴予㈣點6選巾肖來支援網路上的高級服務 〇 作為優選~述方法包括：如果選中的節點與網路之間 的通L鏈、纟。終止’則通過網路通告向網路發送通信。 根2本發明的-個方面，提供—種使用家庭通信網路中 的節點的方法’所述通信網路包括多個節點和同轴電纔 ，所述方法包括： 使用入口節點提父選擇消息，所述選擇消息在L灌協定 中設備屬性資訊要素的被選擇棚位中，所述人口節點是 需要高級服務的節點’且所述人口節點不知道多個節點 中的哪個節點是選擇用來支援網路上高級服務的節點 ，所述被選擇欄位包括供應商特有欄位； 向多個節點分發所述選擇消息； 回應所述選擇'/肖息，確定所述多個節點中哪些能夠選來 支援網路上的高級服務； 099133945 表單編號A0101 第8頁/共36頁 1003121584-0 201216644 [0036] [0037] [0038] [0039]201216644 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to an information network, and more particularly to transmitting information (such as media) on a communication line (such as a coaxial cable) constituting a communication network. Information) method. [Prior Art] [0002] It is well known that general home network technology uses coaxial cable. The Coaxial Cable Multimedia Alliance (MoCATM) provides an appropriate specification (MoCA 1.1) for digital video and entertainment networking over existing coaxial cable in the home on its website www.mocal 1 iance.org, which has been released to open members . The present invention is directed to the MoCA 1.1 specification and incorporates all of its contents. [0003] The coaxial cable home network accesses a large amount of unused bandwidth available on the home coaxial cable. More than 70% of households in the United States have coaxial cable installed on their home infrastructure. One or more of the major entertainment consumer locations, such as the living room, multimedia to and the master bedroom, have been equipped with coaxial power, which is ideal for network configurations. Home networking technology enables homes to use 14-infrastructure as a network system and deliver entertainment and information programming in high quality (service quality). The round-axis electrical home network technology provides high-speed (27〇 mbps), high q〇s and the inherent security of mask-based connectivity combined with packet-level data-level encryption ribs. Coaxial Wei is designed to carry high bandwidth video. Today, coaxial power is often used to securely deliver millions of dollars in paid viewing and premium video content daily. The coaxial thin home network can also be used as the backbone of multiple wireless access points to extend the coverage of the wireless network to the entire home. 099133945 Form No. A0101 Page 4 of 36 1003121584-0 201216644 [0005] The Coax Home Network provides a constant, high throughput, high quality connection to the home video equipment through the existing coaxial power unit. The Coax Cable Home Network provides the primary link for digital entertainment and can also work with other wired and wireless networks to bring entertainment to the home. [0006] The current 'coaxial cable home network works in conjunction with access technologies, such as ADSL and VDSL services or fiber-to-the-home (FTTH), which typically enters the home's working band through twisted pair or fiber optics for a few hundred from ADSL. KHz to 8.5 MHz, 12 MHz for VDSL. When the service reaches the home via xdsl or FTTH, it can be routed to the video device via coaxial cable home networking technology and indoor coaxial cable. Wired services, such as video, audio, and Internet access, can be provided by cable operators to homes over coaxial cable and use coaxial cables deployed within the home to reach individual wired service consumer devices in each room of the home. In general, coaxial cable home network type services and wired services operate in parallel on different frequencies. [0007] It is therefore desirable to select the SRV node selected by the MoCA device connected by the MoCA home network for the purpose of selection. SUMMARY OF THE INVENTION [0008] The present invention provides a system and/or method for selecting a selected serving node (SSN) using a MoCA device connected through a MoCA home network, which is clarified by combining at least one drawing The description is complete and is defined in the claims. [0009] According to an aspect of the invention, there is provided a method of using a node in a home communication network, the communication network comprising a plurality of nodes and a coaxial cable, the method comprising: 099133945 Form No. A0101 Page 5 / 36 pages 1003121584-0 201216644 [0010] An inquiry message is submitted using an ingress node, in the selected field of the device attribute information element in the L 2 Μ E agreement, the ingress node is a node requiring an advanced service, And the ingress node does not know which of the plurality of nodes is a node selected to support advanced services on the network, the selected field includes a vendor-specific field; [0011] distributing the plurality of nodes to the node Inquiring a message; [0012] responding to the query message, determining which of the plurality of nodes can be selected to support advanced services on the network; [0013] propagating which of the plurality of nodes can be selected to support advanced services on the network Information to each of a plurality of nodes that can be selected to support advanced services on the network; and [0014] determining whether one of the plurality of nodes has Checked to support advanced services on the network. [0015] Advantageously, the vendor specific field includes at least one of a TLV type, a TLV length, and a T L V value field. [0016] Advantageously, the method comprises: if the node is not selected at the end of the query, using the ingress node to select itself to support the advanced service on the network [0017] Preferably, the method comprises: using the ingress node to the network The road sends an announcement about the entry node's own choice. [0018] Advantageously, the method comprises selecting a node having a minimum node identification (ID) to support advanced services on the network if the node is unselected at the end of the query. 099133945 Form No. A0101 Page 6 of 36 1003121584-0 201216644 [0019] Preferably, the method comprises: notifying the plurality of nodes that a node having a minimum node identifier is selected for use on the network Advanced Service [0020] Advantageously, the method includes transmitting a communication to the network via a network advertisement if the communication link between the selected node and the network is terminated. [0021] According to an aspect of the invention, there is provided a method of using a node in a home communication network, the communication network comprising a plurality of nodes and a coaxial cable, the method comprising: [0022] submitting an inquiry using an entry node a message, the inquiry message is in at least one of a TLV type, a TLV length, and a TLV value field of a device attribute information element in an L2ME agreement, the ingress node is a node requiring an advanced service, and the ingress node does not know much Which of the nodes is a node selected to support advanced services on the network, the selected field includes a vendor-specific intercept; [0023] distributing the query message to a plurality of nodes; t) [0024] Responding to the query message, determining which of the plurality of nodes can be selected to support advanced services on the network; [0025] disseminating information about which of the plurality of nodes can be selected to support advanced services on the network to enable selection Each of the plurality of nodes of the advanced service on the network; and [0026] determining whether one of the plurality of nodes is selected for use in the support network Advanced service on. [0027] Advantageously, the method comprises: if the node at the end of the query is not selected, 099133945 Form No. A0101, page 7 / page 36, 1003121584-0 201216644, the node uses the ingress node to select itself to support the advanced service on the network [ [0035] [0035] [0035] As a preferred method, the method includes: using a population node to send an advertisement to the network regarding the ingress node's own selection. Advantageously, the method comprises selecting a node having a minimum node identification (ID) to support advanced services on the network if the point at which the fashion is unselected at the end of the query. Preferably, the method comprises: notifying the plurality of nodes, having a minimum node (4) point 6 to support advanced services on the network, as a preferred method, including: if the selected node and the network Between the L chain, 纟. Termination ' sends a communication to the network through a network advertisement. Root 2, in one aspect of the invention, provides a method of using a node in a home communication network, the communication network comprising a plurality of nodes and coaxial power, the method comprising: using a portal node to select a parent message The selection message is in a selected booth of the device attribute information element in the L irrigation protocol, the population node is a node requiring advanced service and the population node does not know which of the plurality of nodes is selected for use a node supporting an advanced service on the network, the selected field including a vendor-specific field; distributing the selection message to a plurality of nodes; and responding to the selection '/ visor, determining which of the plurality of nodes can be selected To support advanced services on the Internet; 099133945 Form No. A0101 Page 8 / Total 36 Pages 1003121584-0 201216644 [0036] [0039] [0039]
[0040] [0041] [0043] 傳播有關多個節點中哪些能夠選來支援網路上的高級服 務的資訊至能夠選來支援網路上的高級服務的多個節點 中的每一個節點；以及 確定多個節點中是否有一個節點已選中用來支援網路上 的高級服務。 作為優選，所述供應商特有欄位包括TLV類型、TLV長度 和TLV值欄位中的至少一個。 作為優選，所述方法包括：如果在選擇結束時尚無選中 的節點，使用入口節點選擇自身來支援網路上高級服務 〇 作為優選，所述方法包括：使用入口節點向網路發送有 關入口節點自己選擇的通告。 作為優選，所述方法包括：如果在選擇結束時尚無選中 的節點，選擇具有最小節點識別字（ID)的節點來支援網 路上的高級服務。 作為優選，所述方法包括：向所述多個節點通告，具有最 小節點識別字的節點已選中用來支援網路上的高級服務 〇 作為優選，所述方法包括：如果選中的節點與網路之間 的通信鏈結終止，則通過網路通告向網路發送通信。 根據本發明的一個方面，提供一種使用家庭通信網路中 的節點的方法，所述通信網路包括多個節點和同軸電纜 ，所述方法包括： 099133945 表單編號A0101 第9頁/共36頁 1003121584-0 [0044] 201216644 闺使用入口節點提交確認消息，所述碟認消息在L2ME協定 中設備屬性資訊要素的TLV類型、TLF長度和TLV值欄位 中的至少一個中，所述入口節點是需要高級服務的節點 ，且所述入口節點不知道多個節點甲的哪一個節點是選 擇用來支援網路上高級服務的卸點’所述被選擇搁位包 括供應商特有欄位； [0046] 向多個節點分發所述確認消息； [0047] 回應所述確認消息’接收來自能夠選來支援網路上的高 級服務的節點的應答消息。 [0048] 作為優選，所述方法包括：使用入口節點向網路發送有 關入口節點自己選擇的通告。 【實施方式】 [0049] 以下參考相應的附圖對各個實施例進行描述，這些附圖 構成了實施例的一部分，其中描述了實現本發明可能採 用的各個實施例。應明白’還可使用其他的實施例，或 者對本文列舉的實施例進行結構和功能上⑽改，而不 會脫離本發明的範圍和實質。 [0050] 099133945 在閲謂冗下面將要描述的内容之後，本領域的技術人員 應當明白’本文描述的各種特徵可通過方法、資料處理 系統或電絲式產品來實現。㈣，這些雜可全部採 部採_的方式或者採用硬體和軟 體 纽。此外，上料m也可制存儲在 -種或多種電腦可讀細介 ㈣存儲在 來表現，該電腦可讀存儲介腦程式產品的形式 買中包含電腦可讀程式碼段 表單編號A0101 第10頁/共36頁 1003121584-0 201216644 .[0051] [0052] Ο [0053] [0054] [0055] [0056] Ο [0057] [0058] [0059] [0060] 或者指令，其存儲在存儲介質中。 電腦可讀存儲介質，包括硬 可使用的 硬碟、CD-ROM、光存儲設備、 存儲設備和/或上述設備的組合。 此外，本文料的表„料或事件的各齡號可在源站 和目的站之間以電磁波的形式通過信號傳導介質如金屬 導線、光纖和’或無線傳輸介質（例如空氣和/控制項） 進行傳送。 為便於參考，町術語表給出本專财請中使用的各種 縮寫和符號的含義： 數位PHY t括MoCA積體電路埠，其構成發往和來自接收 器和/或收發器積體電路的信號傳輸通道 EN MoCA已有節點（術語“節點’，在此可使用“模組，，替 換） 、 IE 資訊要素（Information Element) L2ME (MoCA)層2管理實體 MAC介質訪問控制-包括m〇CA積體電路邏輯，當需要 向接收器和/或收發器積體電路發送信號、和/或需要從 接收器和/或收發器積體電路接收信號時，其調度數位 PHY的開和關 MAP媒體接入計畫 NC MoCA網路控制器 PHY MoCA網路的物理層 099133945 表單编號A0101 第11頁/共36頁 1003121584-0 201216644 [0061] [0062] [0063] [0064] [0065] [0066] [0067] [0068][0043] [0043] propagating information about which of a plurality of nodes can be selected to support advanced services on the network to each of a plurality of nodes capable of selecting an advanced service on the network; and determining more Whether one of the nodes is selected to support advanced services on the network. Advantageously, said vendor specific field comprises at least one of a TLV type, a TLV length and a TLV value field. Advantageously, the method comprises: if the node that is unselected at the end of the selection is selected, using the ingress node to select itself to support the advanced service on the network as a preference, the method comprising: using the ingress node to send the relevant ingress node to the network Selected notice. Advantageously, the method comprises selecting a node having a minimum node identification (ID) to support advanced services on the network if the node that is unselected at the end of the selection is selected. Advantageously, the method comprises: advertise to said plurality of nodes that a node having a minimum node identification word has been selected to support advanced services on the network as preferred, said method comprising: if the selected node and network When the communication link between the roads is terminated, the communication is sent to the network through the network advertisement. According to an aspect of the present invention, there is provided a method of using a node in a home communication network, the communication network comprising a plurality of nodes and a coaxial cable, the method comprising: 099133945 Form No. A0101 Page 9 / Total 36 Page 1003121584 -0 [0044] 201216644 提交 using an ingress node to submit an acknowledgment message in at least one of a TLV type, a TLF length, and a TLV value field of a device attribute information element in the L2ME protocol, the ingress node is needed a node of the advanced service, and the ingress node does not know which node of the plurality of nodes A is selected to support the unloading point of the advanced service on the network. The selected camp includes a vendor-specific field; [0046] The plurality of nodes distribute the confirmation message; [0047] responding to the confirmation message 'receiving a response message from a node that can select an advanced service on the support network. Advantageously, the method comprises: using the ingress node to send an advertisement to the network regarding the ingress node's own selection. [Embodiment] [0049] Various embodiments are described below with reference to the accompanying drawings, which form a part of an embodiment in which various embodiments that may be employed to implement the invention are described. It should be understood that other embodiments may be utilized, and structural and functional changes may be made without departing from the scope and spirit of the invention. [0050] 099133945 After reading what will be described below, those skilled in the art will appreciate that the various features described herein can be implemented by methods, data processing systems, or wire-type products. (4) These all kinds of impurities can be collected by means of hardware or soft and soft. In addition, the loading m can also be stored in one or more computer-readable mediators (4) stored in the form, the computer readable storage medium-brain product form includes a computer readable program code segment form number A0101 10th Pages / 36 pages 1003121584-0 201216644 . [0052] [0055] [0056] [0059] [0060] [0060] or instructions stored in a storage medium in. Computer readable storage media, including hard-usable hard drives, CD-ROMs, optical storage devices, storage devices, and/or combinations of the above. In addition, the age numbers of the materials or events in this document may be transmitted between the source station and the destination station in the form of electromagnetic waves through signal transmission media such as metal wires, optical fibers, and/or wireless transmission media (eg, air and/or control items). For ease of reference, the vocabulary of the town gives the meaning of the various abbreviations and symbols used in this special account: The digital PHY includes the MoCA integrated circuit 埠, which constitutes the product to and from the receiver and/or transceiver. The circuit signal transmission channel EN MoCA has nodes (the term "node", here you can use "module, replace"), IE information element (Information Element) L2ME (MoCA) layer 2 management entity MAC media access control - including The m〇CA integrated circuit logic, when it is desired to transmit signals to the receiver and/or transceiver integrated circuits, and/or to receive signals from the receiver and/or transceiver integrated circuits, it schedules the opening and closing of the digital PHY MAP Media Access Plan NC MoCA Network Controller PHY MoCA Network Physical Layer 099133945 Form Number A0101 Page 11 / Total 36 Page 1003121584-0 201216644 [0061] [0063] [0064] [0065] ] [00 66 [0068] [0068]
QoS服務品質 SRV服務-運行在相對於MoCA層而言較高層中的服務 的通用名 SSN選中的SRV節點（SRV選擇節點）-被選擇用於（為連 接於同一網路的所有設備）運行SRV服務的節點QoS Quality of Service SRV Service - SRV node (SRV Select Node) selected for the generic name SSN of the service running in the higher layer relative to the MoCA layer - is selected for (for all devices connected to the same network) SRV service node
MoCA網路（諸如IEEE 802. 1音視頻橋接系統（AVB)寬頻 預留）上實施的一些高級服務需要MoCA網路選擇一個節點 來為整個MoCA網路運行預先確定的服務。 如果該服務是可選的，網路控制節點（NC)有可能不支援 這一可選服務。如果NC不支援該可選服務，則該Nc不能 選作為SSN。作為替代，任何支持SRV的節點_即能夠支援 該高級服務（儘管是可選的可選作為SSN。在本發明的 一些實施例中，此處描述的SRV節點選擇協議優選地與叱 選擇和NC切換/備份正交（orth〇g〇nai)。 在本發明的一些實施例中，選擇SRV節點的可能的SSN選 擇規則如下： 乂些規則包括需要由被允許進入網路的任一支援SRV的節 點發送的詢問消息，其中的—個實施例將在以下結合圖2 及說明書相應的部分進行描述。 在詢問完成後，共用同樣的SRV節點詢問相關資訊（其通 過入口節點轉發）的任‘意支持SRV的節點（SRV_capable ⑽心）都可作為SRV選擇節點（SRV_seiected 進—步，在詢問完成後’優選地所有支持SRy的節點（包 099133945 表單編號A0101 苐】2頁Z共36頁 1003121584-0 201216644 括入口節點，如以下所定美、^ 叮疋我）共用同樣資訊：關於網路上 那-節點Tciksiiv的’ ^哪個節點（如果有）是SRV選擇 節點。 [0069] 如果在詢問結束時還沒有節點被選中，則人口節點可以 選擇自身作為被選節點，並向網路發送其自己選擇的通 D(n〇tlflCatl〇nh作為替代，可以選擇其他支持SRV 的節點，並將該選擇通告NC。 [0070] 〇 本發明的另—實施例採用如下高效技術來支援動態SRV選 擇。 [0071] 如果SRV選擇節點從網路中移除（或者通過適當地關機/故 障和/或省電），這—拓撲變化至少部分地通過網路通告而 實現。 [0072] 具有最小節點ID(NID)的支持SRV的節點成為srv選擇節 點，並且提交選肖，以向其他節點通告該選擇。 [0073] 〇 這一方案優選地與當前MoCA規範完全相容並且無需對該 規範作任何修改。 [0074] 在本發明的一些實施例中，當所選擇的SRV節點表現不合 格（fails) ’可以動態地選擇其他支援SRV的節點作為新 的SSN。SRV選擇協定可包括重獲（recovery)協定以動 態地選擇支援SRV的節點中的一個節點作為新的SRV選擇 節點。 [0075] SRV選擇協定可基於MoCA 1.1規範和/或2.0規範中規定 的L2ME架構消息協定，本發明參考並結合其全部内容。 099133945 表單編號A0101 第13頁/共36頁 1003121584-0 201216644 [0076] 如果所有的節點均不支持SRV，則入口節點成為SRV選擇 節點。 [0077] 如果有一個以上的節點（除入口節點之外）是支持S R V的且 沒有節點是SRV選擇節點，則入口節點可以選擇具有最小 NID的支持SRV的節點作為SRV選擇節點。 [0078] 當在進入省電模式之前SSN提交了 SRV節點選擇L2ME消息 (參見圖4及對應的描述），入口節點可以重置自己的NID 位（bit)，以對應於SSN位遮罩（bitmask)。 [0079] 入口節點回應可用于向NC確認入口節點的SSN選擇。作為 對來自NC的有關SSN選擇的消息的回應，所有其他支持 SRV的節點可向NC發送一個空回應（零長度載荷）。 [0080] 圖1是根據本發明使用的在L 2 Μ E發現協定中交換的消息的 實施例的示意圖。L2ME設備發現協定是節點用來發現特 定一組其他節點的屬性而使用的協定。 [0081] 圖1示出了示例性的客戶機節點102、NC 104和其他節點 106。協定中的第一消息108提交-即，節點向NC發送請 求以運行“設備發現”處理事務（在NC和網路的其他節 點之間進行資訊的多路交換）。設備發現處理事務 (device discovery transaction)使得MoCA節點能 夠發現每一個其他節點的能力。具體來說，每一個MoCA 節點優選地具有一組關聯屬性，用於表徵其能力，諸如 最大聚合尺寸（aggregation size)及節點能夠處理的 分組資料的數量。這些屬性也是供應商專屬的。消息108 優選地包括報頭，用於指示該消息指向（direct to)設 099133945 表單編號A0101 第14頁/共36頁 1003121584-0 201216644 備發現。消息108還包括有效載荷，用於指示該發現指向 節點屬性IE。這樣’ L2ME設備發現協定使得MoCA網路中 的任意節點能夠重獲MoCA網路中一個或更多特定節點的 屬性。 [0082] NC優選地向其他節點1〇6廣播該請求^ NC轉發有效載荷及 請求。其他節點106中的每一個節點發送回應，如η〗。 其他節點106中的每一個節點通過由特定位元配置表徵的 欄位（field)來識別它們。這一攔位通常稱為波節點遮罩 (WAVENODE MASK)或稱為位遮罩或節點id(NID)位遮罩 。這樣的遮罩優選地指示了互聯網協議（IP)位址的範圍 。這些位址可用於識別支持SRV的節點的IP地址。 [0083] 響應112中的每一個優選地包括與其他節點中的每一 個節點相對應的屬性IE。在114，NC在消息114中廣播回 應的集和。集和回應消息114包括有效載荷，該有效載荷 包括回應設備發現的其他節點106的每一個的聚合ιέ。 [0084] ❹ 圖2是根據本發明的在SRV節點選擇處理事務中交換的消 息的實施例的示意圖。圖2示出了支持SRV的入口節點2〇2 、NC 204和其他節點206之間交換的消息。對這一應用 來說，入口節點是需要SRV服務的節點，其不知道哪個節 點是SSN。入口節點還作為向NC提交處理事務請求（參見 後面的詳細描述）的節點。如IEEE 802. lQat規範所規定 ，例如，該SRV協議用於選擇指派的多流預留協定 (Multiple Stream Reservation Protocol,簡稱 MSRP)節點（MN)。 099133945 表單編號A0101 第15頁/共36頁 1003121584-0 201216644 [0085] 根據本發明的方法，消息（如圖2中所示的）至少部分地使 用L2ME消息協定來確定網路上每個節點的SRV能力。這樣 ，根據本發明的設備發現協定，為獲取有關網路上每個 節點的SRV能力的資訊，平衡（leverage)L2ME消息架構 和協定。 [0086] 消息協定包括波0 208、波1 210、波2 212和波3 214 。波0 208包括由入口節點202向NC 204的第一消息提交 216。入口節點202是需要SRV服務的節點，其不知道哪 個節點是SSN。重申一下，入〇節點202在216中提交有 關網路上的SSN處理事務的請求。 [0087] 在218，NC 204向節點通告入口節點的SSN請求。其他節 點206和入口節點202在220中回應SSN請求218。 [0088] 在波1 210中，在224，NC 204將有關SSN請求的回應通 告給入口節點202以及其他支持SRV的節點222。使用在 226接收到的回應，入口節點2〇2可構建SRV通告消息指 示支援SRV的位元遮罩（定義哪些節點是支持SRV的位遮罩 )和SRV選擇位遮罩（定義哪個節點是SSN(若有的話）的位 遮罩）。在本發明的一個實施例中，當入口節點確定網路 已經有SSN，則入口節點默認在網路中已存在的這個SSN 。如果網路中沒有SSN，則入口節點啟動節點選擇處理事 務，確定是否入口節點應當成為SSN、或者另一個節點（ 例如具有最小NID)應當成為SSN。在228，入口節點將有 關兩個位遮罩的資訊傳送至NC。 [0089] 在波2 212中，在步驟230 ’ NC 204向其他支持SRV的節 099133945 表單編號A0101 第16頁/共36頁 1003121584Ό 201216644 [0090] Ο [0091] [0092] G [0093] [0094] 點2 2 2通告入口郎點s R V位遮罩確定2 2 6。在2 3 2，支援 SRV的節點222向NC 204發送它們對入口節點確定的應答 〇 在波3 214中，NC 204可以L2ME鏈結格式（如M〇CA規範 1. 1中所建議，本發明參考並結合其全部内容或任何其他 合適的MoCA規範）通告入口節點以及其他支持SRV的節點 有關對SRV指示請求的回應，如步驟234所示。此後，優 選地支援SRV的節點222可以在步驟236回應該通告。在 步驟238，入口節點202優選地以用空回應來回應通告。 圖3是根據本發明使用L2ME提交（submissi〇n)規則的 SRV節點選擇詢問的實施例的示意圖。 波0 308不出，在本發明的—些實施例中，任何支持srv 的節點302在其允許進入網路的情況下，可向Nc 3〇4提 交SRV節點詢問。在步驟3U，Nc 3〇4可向其他節點寫 通告入口節點的SRV詢問《支持SRV的節點318的回應可 指不其相應的SRV模式，如步驟316所示。 波1 310示出支持SRV的節點318從既⑽斗接收通告32〇 。通告32G優選地包括對SRV詢問的回應。在步驟奶， 對SRV詢問320的回應可發送至Nc。 詢問結束時，所有支持SRV的節點318包括入口節點綱 ’共用以下相同資訊：有關網路上的哪些節點是支持⑽ 的節點’且哪倘節點（若有的話）是聊選擇節點。如果沒 有SRV選擇節點’具有最小節點id(nid)的支持srv的節 點或任何其他合適的可選節點可以成為SRV選擇節點，並 099133945 表單編號A0101 第Π頁/共36頁 1003121584-0 201216644 能夠提交SRV節點選擇消* 马心以通0其他支援SRV的節點。 [0095] [0096] [0097] [0098] 如果SRV選擇節點從網 中移除（或者通過適當地關機/省 電和/或，之後，在本㈣的— 小NID的支持SRV的節 有取Some advanced services implemented on MoCA networks, such as the IEEE 802.1 Audio Video Bridging System (AVB) Broadband Reservation, require the MoCA network to select a node to run predetermined services for the entire MoCA network. If the service is optional, the Network Control Node (NC) may not support this optional service. If the NC does not support the optional service, the Nc cannot be selected as the SSN. Alternatively, any SRV-capable node can support the advanced service (although it is optionally optional as an SSN. In some embodiments of the invention, the SRV node selection protocol described herein is preferably associated with 叱 selection and NC Switching/Backup Orthogonal (orth〇g〇nai). In some embodiments of the invention, the possible SSN selection rules for selecting an SRV node are as follows: These rules include any SRV that needs to be allowed to enter the network. The inquiry message sent by the node, the embodiment of which will be described below in conjunction with Figure 2 and the corresponding part of the description. After the inquiry is completed, the same SRV node is shared to ask for relevant information (which is forwarded through the ingress node). The SRV-capable node (SRV_capable (10) heart) can be used as the SRV selection node (SRV_seiected step-by-step, after the inquiry is completed), preferably all nodes supporting SRy (package 099133945 Form No. A0101 苐) 2 pages Z total 36 pages 1003121584-0 201216644 includes the entry node, as defined below, ^ 叮疋 me) share the same information: about the node on the network - node Tciksiiv '^ which node ( If yes, it is an SRV selection node. [0069] If no node is selected at the end of the inquiry, the population node can select itself as the selected node and send its own selected pass D to the network (n〇tlflCatl〇 Alternatively, other SRV-capable nodes may be selected and the selection notified to the NC. [0070] Another embodiment of the present invention employs the following efficient techniques to support dynamic SRV selection. [0071] If the SRV selects a node from the network The removal (or by proper shutdown/failure and/or power saving), this - topology change is achieved, at least in part, by network advertisements. [0072] SRV-enabled nodes with minimum node ID (NID) become srv options Nodes, and submit selections to advertise the selection to other nodes. [0073] This scheme is preferably fully compatible with current MoCA specifications and does not require any modifications to the specification. [0074] Some embodiments of the invention In the case that the selected SRV node fails to perform (fails) 'the other SRV-capable nodes can be dynamically selected as the new SSN. The SRV selection agreement may include recovery. One of the nodes supporting the SRV is dynamically selected as the new SRV selection node. [0075] The SRV selection protocol may be based on the L2ME architecture message protocol specified in the MoCA 1.1 specification and/or the 2.0 specification, and the present invention refers to and combines All content 099133945 Form number A0101 Page 13 of 36 1003121584-0 201216644 [0076] If all nodes do not support SRV, the ingress node becomes the SRV selection node. [0077] If more than one node (other than the ingress node) supports S R V and no node is an SRV selection node, the ingress node may select the SRV-capable node with the smallest NID as the SRV selection node. [0078] When the SSN submits the SRV node selection L2ME message before entering the power saving mode (see FIG. 4 and the corresponding description), the ingress node may reset its own NID bit to correspond to the SSN bit mask (bitmask) ). [0079] The ingress node response can be used to confirm the SSN selection of the ingress node to the NC. In response to a message from the NC regarding SSN selection, all other SRV-enabled nodes can send an empty response (zero length payload) to the NC. 1 is a schematic diagram of an embodiment of a message exchanged in an L 2 Μ E discovery protocol for use in accordance with the present invention. An L2ME device discovery protocol is a protocol used by a node to discover the attributes of a particular set of other nodes. FIG. 1 illustrates an exemplary client node 102, NC 104, and other nodes 106. The first message 108 in the agreement is submitted - that is, the node sends a request to the NC to run a "device discovery" transaction (a multiplex of information between the NC and other nodes of the network). The device discovery transaction enables the MoCA node to discover the capabilities of each of the other nodes. In particular, each MoCA node preferably has a set of associated attributes that characterize its capabilities, such as the maximum aggregate size and the amount of packet material that the node can process. These attributes are also vendor specific. The message 108 preferably includes a header for indicating that the message is directed to 099133945 Form No. A0101 Page 14 of 36 1003121584-0 201216644. The message 108 also includes a payload indicating that the discovery points to the node attribute IE. Thus the 'L2ME device discovery protocol enables any node in the MoCA network to regain the attributes of one or more specific nodes in the MoCA network. [0082] The NC preferably broadcasts the request to the other nodes 1 to forward the payload and the request. Each of the other nodes 106 sends a response, such as η. Each of the other nodes 106 identifies them by fields characterized by a particular bit configuration. This block is often referred to as a wave node mask (WAVENODE MASK) or as a bit mask or node id (NID) bit mask. Such a mask preferably indicates the range of Internet Protocol (IP) addresses. These addresses can be used to identify the IP address of the node supporting the SRV. [0083] Each of the responses 112 preferably includes an attribute IE corresponding to each of the other nodes. At 114, the NC broadcasts the set of responses in message 114. The set and response message 114 includes a payload that includes an aggregated ι of each of the other nodes 106 that the device finds. [0084] FIG. 2 is a schematic diagram of an embodiment of a message exchanged in an SRV node selection process transaction in accordance with the present invention. Figure 2 shows messages exchanged between the ingress node 2〇2, NC 204 and other nodes 206 that support SRV. For this application, the ingress node is the node that needs the SRV service and it does not know which node is the SSN. The ingress node also acts as a node to submit processing transaction requests to the NC (see detailed description below). As specified by the IEEE 802. lQat specification, for example, the SRV protocol is used to select an assigned Multiple Stream Reservation Protocol (MSRP) node (MN). 099133945 Form Number A0101 Page 15 of 36 1003121584-0 201216644 [0085] According to the method of the present invention, a message (as shown in FIG. 2) at least partially uses an L2ME message protocol to determine the SRV of each node on the network. ability. Thus, the device discovery protocol in accordance with the present invention leverages the L2ME message architecture and protocols for obtaining information about the SRV capabilities of each node on the network. [0086] The message protocol includes wave 0 208, wave 1 210, wave 2 212, and wave 3 214. Wave 0 208 includes a first message submission 216 from the ingress node 202 to the NC 204. The ingress node 202 is a node that requires an SRV service, which does not know which node is the SSN. To reiterate, the incoming node 202 submits a request in 216 for an SSN processing transaction on the network. At 218, the NC 204 advertises the SSN request of the ingress node to the node. The other node 206 and the ingress node 202 respond to the SSN request 218 in 220. [0088] In wave 1 210, at 224, NC 204 reports a response to the SSN request to ingress node 202 and other SRV-enabled nodes 222. Using the response received at 226, ingress node 2〇2 can construct an SRV announce message indicating the bitmask of the supporting SRV (defining which nodes are bitmasks that support SRV) and the SRV selection bitmask (defining which node is the SSN) (if any) bit mask). In one embodiment of the invention, when the ingress node determines that the network already has an SSN, the ingress node defaults to the SSN that already exists in the network. If there is no SSN in the network, the ingress node initiates a node selection process to determine if the ingress node should be an SSN, or another node (e.g., with a minimum NID) should become an SSN. At 228, the ingress node transmits information about the two bitmasks to the NC. [0089] In wave 2 212, at step 230 'NC 204 to other SRV-enabled sections 099133945 Form No. A0101 Page 16 of 36 Page 1003121584Ό 201216644 [0090] [0091] [0092] G [0093] [0094 ] Point 2 2 2 Announces the entrance point s RV bit mask determines 2 2 6 . At 232, the SRV-enabled node 222 sends their response to the ingress node to the NC 204. In the wave 3 214, the NC 204 can be in the L2ME link format (as suggested in the M〇CA specification 1.1, the present invention Refer to and in conjunction with its entirety or any other suitable MoCA specification) to advertise the ingress node and other SRV-enabled nodes in response to the SRV indication request, as shown in step 234. Thereafter, node 222, which preferably supports SRV, may advertise at step 236. At step 238, the ingress node 202 preferably responds to the announcement with a null response. 3 is a schematic diagram of an embodiment of an SRV node selection query using L2ME submission (submissi〇n) rules in accordance with the present invention. Wave 0 308 does not, in some embodiments of the present invention, any node 302 that supports srv may submit an SRV node query to Nc 3〇4 if it is allowed to enter the network. In step 3U, Nc 3〇4 may write to other nodes an SRV advertised to the ingress node. The response of the SRV-enabled node 318 may refer to its corresponding SRV mode, as shown in step 316. Wave 1 310 shows node 318 supporting SRV receiving notification 32 from both (10) buckets. Announcement 32G preferably includes a response to the SRV challenge. At the step milk, a response to the SRV query 320 can be sent to Nc. At the end of the query, all SRV-capable nodes 318, including the entry node, share the same information as follows: which nodes on the network are nodes that support (10) and where if the nodes (if any) are chat selection nodes. If there is no SRV selection node 'the node with the smallest node id (nid) supporting srv or any other suitable optional node can become the SRV selection node, and 099133945 Form No. A0101 Page / Total 36 Page 1003121584-0 201216644 Can submit The SRV node selects and eliminates the horse's heart to pass the other nodes that support the SRV. [0098] If the SRV selection node is removed from the network (or by properly shutting down/saving power and/or, after the (4) - small NID support SRV section is taken [0098]
mm 點成為SRV選择節點，並且提交SRV 即點選擇消息以通告其他支援SRV的節點。 圖疋根據本!x明使用L2ME提交規則的別v節點選擇詢問 的示意圖。具體地，圖4所示為根據本發明的—個方法實 施例的示意圖，其示出了當SRV選擇節點關機(例如通過The mm point becomes the SRV selection node, and the SRV point selection message is submitted to announce other nodes supporting the SRV. Figure 疋 illustrates the schematic of the query using the other v-nodes of the L2ME submission rule. Specifically, FIG. 4 is a schematic diagram of an embodiment of a method in accordance with the present invention, showing that when the SRV selection node is shut down (eg, by
選擇或者由於進入省電模式和/或出現故障）時，需要SRV 即點執行處理操作。圖4示出了波〇 408,包括在SSN節 點鏈結故障後具有最小節點聊⑼的入口節點術、Μ 4〇4和其他支持SRV的節點傷之間的通信。根據本發明 在SRV選擇節點掉線時，具有相對而言最小㈣的支持 SRV的節點成為SRV選擇節點，並發送m節點選擇提交 L 2 Μ E消息。 具體地’ SRV選擇入口節點4〇2優選地示出撕節點選擇 提交408。該提交優選地通告其他支持SRV的節點有關 SRV選擇提交，步驟41〇。在步驟412，支援SRV的節點 402/406向NC 404發送有關提交4〇8的回應。 這樣，該方法實現了在SSN和網路之間連接故障後，—個 支援SRV的節點可向NC發送SRV節點選擇提交L2ME消息。 應當重申，除了在出現故障時進行節點選擇之外，在進 入省電模式和/或關機之前，先前的SRV選擇節點還可以 將自己從一組支持SRV的節點中移除，並發送L2ME消息指 099133945 表單編號A0101 第18頁/共36頁 1003121584-0 [0099] 201216644 示其不可使用。 [0100] 根據本發明的示例性L2ME SRV確認處理事務將在以下的 圖5及說明書相應的部分進行描述。NC節點可以在接收到 來自入口節點的提交L2ME幀時、或者獨立地（即在未接收 到其他節點的提示的情況下）開始該處理事務。 [0101] 圖5是根據本發明的SRV節點選擇L2ME確認處理事務實施 例的示意圖。圖5中示出了入口節點502、NC 504、支持 SRV的節點506、波0 508和波1 510。具體地，在步驟 Ο 512 ’入口節點502向NC 504發送提交L2ME幀以觸發srv 節點確認。 [0102] 在步驟514，NC 504通告所有的網路節點有關入口節點 502的SRV節點確認提交。 [0103] 在步驟516，支援SRV的節點506發送回應。 [0104] 在本發明的一些實施例中，不支持SRV的節點（未示出）可 以返回通用L2ME回應錯誤碼。 ❹ _5]在波0 508之後，示出了一個可能的L2ME波1請求510的 實施例。 [0106] 在波1 510中’在步驟518’ NC 504在L2ME中向節點502 以及節點506通告有關SRV節點確認提交的回應。這一通 告可以L2ME中可用的連接有效載荷格式實現。 [0107] 使用在步驟518中接收的回應，入口節點502可以確認 SRV通告消息以指示： [0108] *SRV選擇NID;及 099133945 表單編號A0101 第19頁/共36頁 1003121584-0 201216644 [0109] •支持SRV的NID位遮罩。 [0110] 支援SRV的節點優選地包括IEEE SRV設備屬性資訊要素（ 參見圖6及其說明），帶有同軸電纜多媒體聯盟MoCA v2. 0規範中規定的設備發現協定提交L2ME處理事務消息 的L2ME有效載荷。這樣的内容優選地包括在MoCA L2ME 協議上有效地形成覆蓋（overlay)的資訊。這樣的覆蓋 是可能的，因為MoCA中的L2ME協議有規定要傳送不由 MoCA解釋的供應商特定資訊要素。相應地，L2ME協議不 加改變地保留，如MoCA中所規定。唯一的請求是得到分 配給SRV所屬的特定實體的供應商ID值（vendor ID va 1 ue)。例如，一個可以具有分配給名稱為ACME公司的 供應商ID。其結果，ACME為多個服務（SRV)定義幾個TLV 類型（TLV TYPE)。 [0111] 如此處進一步地描述’當完成了 L2ME設備發現處理事務 ，優選地MoCA網路中的所有支援SRV的節點可以共用有關 其他支持SRV的節點的相同資訊。這些資訊包括： [0112] 1)哪些MoCA節點是支援SRV的；及 [0113] 2)哪一個MoCA節點被選擇為SSN » [0114] 如果沒有節點被選為SSN，則將執行SSN選擇。 [0115] 圖6是IEEE SRV設備屬性資訊要素（IE)的表格。一般來 說’ IEEE SRV設備屬性IE欄位可以如圖6中的表格所限 定。設備屬性資訊要素的通用格式在同軸電纜多媒體聯 盟的MoCA v2. 0規範中有描述，本發明將其全部内容結 合於此。 099133945 表單编號A0101 第20頁/共36頁 1〇〇3 201216644 [0116] [0117] Ο [0118] ❾ [0119] [0120] [0121] [0122] 圖6中的表格示意出IEEE SRV設備屬性IE，示出每一個 屬性數位的位元（bit)602、對應於每一個屬性數位的八 位元位元組（octets)604 '和每一個IE起始的偏移606 〇When the selection or due to entering the power saving mode and/or the failure occurs, the SRV is required to perform the processing operation. Figure 4 illustrates a ripple 408 that includes communication between an ingress node with a minimum node chat (9), a node 4〇4, and other node injuries that support SRV after a SSN node link failure. According to the present invention, when the SRV selection node is dropped, the node having the relatively smallest (four) support SRV becomes the SRV selection node, and the m node is selected to submit the L 2 Μ E message. Specifically, the SRV selection entry node 4〇2 preferably shows a tear node selection submission 408. The submission preferably informs other SRV-enabled nodes about the SRV selection submission, step 41. At step 412, the SRV-enabled node 402/406 sends a response to the submission 4-8 to the NC 404. Thus, the method implements a connection failure between the SSN and the network, and a node supporting the SRV can send an SRV node to the NC to select to submit an L2ME message. It should be reiterated that in addition to node selection in the event of a failure, the previous SRV selection node may also remove itself from a set of SRV-capable nodes and send an L2ME message before entering the power save mode and/or shutting down. 099133945 Form No. A0101 Page 18 of 36 1003121584-0 [0099] 201216644 shows that it is not available. An exemplary L2ME SRV acknowledgment transaction transaction in accordance with the present invention will be described in the following FIG. 5 and corresponding portions of the specification. The NC node may begin the processing transaction upon receipt of the L2ME frame from the ingress node, or independently (i.e., without receiving a prompt from other nodes). 5 is a schematic diagram of an embodiment of an SRV node selection L2ME validation processing transaction in accordance with the present invention. Ingress node 502, NC 504, SRV-enabled node 506, wave 0 508, and wave 1 510 are shown in FIG. Specifically, at step 512 512 'the ingress node 502 sends a commit L2ME frame to the NC 504 to trigger the srv node acknowledgment. [0102] At step 514, the NC 504 advertises all network nodes regarding the SRV node confirmation submission of the ingress node 502. [0103] At step 516, the node 506 supporting the SRV sends a response. [0104] In some embodiments of the invention, a node (not shown) that does not support SRV may return a generic L2ME response error code. _ _5] After wave 0 508, an embodiment of a possible L2ME Wave 1 request 510 is shown. [0106] In wave 1 510, at step 518, NC 504 notifies node 502 and node 506 of the response to the SRV node acknowledgment submission in L2ME. This notification can be implemented in the connection payload format available in L2ME. [0107] Using the response received in step 518, the ingress node 502 can acknowledge the SRV Advertisement message to indicate: [0108] *SRV selects NID; and 099133945 Form number A0101 Page 19/36 pages 1003121584-0 201216644 [0109] • Support for SRV NID bit masks. [0110] The SRV-enabled node preferably includes an IEEE SRV device attribute information element (see FIG. 6 and its description), and the L2ME with the device discovery protocol submitted by the Coaxial Cable Multimedia Alliance MoCA v2.0 specification submitting the L2ME processing transaction message is valid. Load. Such content preferably includes information that effectively forms an overlay on the MoCA L2ME protocol. Such coverage is possible because the L2ME protocol in MoCA has provisions to deliver vendor-specific information elements that are not interpreted by MoCA. Accordingly, the L2ME protocol is retained unchanged, as specified in the MoCA. The only request is to get the vendor ID value (vendor ID va 1 ue) assigned to the particular entity to which the SRV belongs. For example, one can have a vendor ID assigned to the name ACME Company. As a result, ACME defines several TLV types (TLV TYPEs) for multiple services (SRVs). [0111] As described further herein, when the L2ME device discovery processing transaction is completed, preferably all SRV-capable nodes in the MoCA network can share the same information about other SRV-capable nodes. The information includes: [0112] 1) Which MoCA nodes are supporting SRV; and [0113] 2) Which MoCA node is selected as SSN » [0114] If no node is selected as the SSN, SSN selection will be performed. 6 is a table of IEEE SRV device attribute information elements (IE). In general, the IEEE SRV Device Attributes IE field can be defined by the table in Figure 6. The general format of the device attribute information elements is described in the MoCA v2.0 specification of the Coax Multimedia Association, the entire contents of which are incorporated herein by reference. 099133945 Form No. A0101 Page 20 / Total 36 Page 1 〇〇 3 201216644 [01117] 0 [0118] ❾ [0120] [0122] The table in FIG. 6 illustrates an IEEE SRV device. The attribute IE shows a bit 602 for each attribute digit, an octet 604 ' corresponding to each attribute digit, and an offset 606 for each IE start 〇
MoCA中定義了設備屬性資訊要素（IE)的格式^ MoCA規範 規定當屬性欄位設置為OxFF，資訊欄位的起始16位元定 義了供應商ID。供應商ID由MoCA分配給特定的供應商或 實體。 無論如何，供應商ID是供應商特有的。在本發明接下來 的實施例中，TLV類型、TLV長度（TLV LENGTH)和TLV 值（TLV VALUE)是供應商特有的一即對於這些欄位每一 個供應商具有不同的值，其是由供應商規定的，而不是 由MoCA規定的。這意味著，供應商特有消息可以被忽略 —即MoCA L2ME協議在MoCA上傳送這些消息而不用解釋 供應商特有消息的内容。這樣，使用MoCA L2ME協議的 節點在不嘗試解釋供應商特有消息的情況下將IE傳送給 其他節點。相應地，SRV選擇協議（其使用TLV類型、 TLV長度和TLV值來實現）是MoCA標準L2ME協定上的覆蓋 協定。 圖6中的表格示意出如下屬性： 屬性ID 608 ; 屑性ID的值是OxFF。 長度（UInteger8)610 ; 099133945 表單編號A0101 第21頁/共36頁 1003121584-0 201216644 [0123] 長度的值可以是1。在本發明的一些實施例中，屬性IE的 實際長度以位元為單位是（長度+ 1 )*32。 [0124] 供應商 ID 612 ; [0125] 供應商ID的值優選地可由MoCA聯盟分配，且此處參考並 結合這種分配方式。 [0126] TLV類型614 ;(例如SRV IEEE音視頻橋接系統 (AVB)(IEEE 802. lQat)可將TLV類型值設為0。在本發 明的另一實施例中，對於其他適當的服務，該TLV類型可 指定為相同的值或其他合適的值。） [0127] TLV長度616 :(該長度是實現TVL類型614指定的服務所 需要的長度） [0128] TVL值618 ; [0129] 應當注意的是，根據本發明，在TLV值欄位，IE可包括兩 個位遮罩（未示出）：一個用於指示該節點是否是支持SRV 的節點，另一個用於指示該節點是否是SRV選擇節點。 [0130] 在TVL值欄位的第一位遮罩中，對應於節點ID的位的值為 1指示該節點是能夠作為網路中支援SRV的節點。值為0指 示該節點不能夠作為網路中支援SRV的節點。 [0131] 在TVL值欄位的第二位遮罩中，對應於節點ID的位的值為 1指示該節點被選作為網路中的SRV節點。值為0指示該節 點不是被選中的節點。所選擇的節點是否存在於網路上 、或者網路上是否沒有被選中的節點，需要通過第二位 元遮罩來確定，然後，第一位遮罩指示哪些節點是支援 099133945 表單編號A0101 第22頁/共36頁 1003121584-0 201216644 的並基於選擇標準—例如具有最小NI])的節點—指 不哪個節點應當選作為SRV節點。第二位遮罩還向其他支 持SRV的節點指示有一個節點已經被選中作為節點。 34樣可以防止其他節點請求成為SRV節點而引發衝突。 [0132] 鋪本發明，對m的選擇和確認：如果出現以下任一種 情況，1)SRV選擇節點指示被選擇的SRV節點已從網路中 移除（由於故障、電源狀態/關機等），或者2)支持SRV的 節點發現處理事務指示沒有發現SRV選擇節點，則具有最 〇 小節點ID的支持Rsv的節點或其他合適的被選中節點可開 始作為SRV，並通過生成L2ME SRV確認處理事務向其他 支援SRV的節點確認這一選擇。 [0133] 圖7示出了根據本發明的資料處理系統700中的單晶片戍 多晶片模組702 ’其可以是一個或多個積體電路。資料處 理系統70 0可包括以下部件中的一個或多個：I /〇電路 704、週邊設備706、處理器708和記憶體？10 *這些部件 通過系統匯流棑或其他互連部件712通信連接，並組裝在 〇 終端用戶系統730所包含的電路板720上。可對系統7〇〇 進行配置，以便用於根據本發明的有線電視調諳器。應 當注意系統700只是一個示例，本發明的實際範圍和實質 應當由權利要求來限定。 [0134] 以上描述了用於提供MoCA SSN選擇策略的系統和方法。 [0135] 本發明是通過幾個具體實施例進行說明的，本領域技術 人員應當明白’在不脫離本發明範圍的情況下，還可以 對本發明進行各種變換及等同替代。例如，本領域技術 1003121584-0 099133945 表單編號A0101 第23頁/共36頁 201216644 人員知悉，附圖中所示的步驟可以按照另外的順序執行 ，並且所示的一個或多個步驟是可選擇的。以上引用的 實施例的方法和系統還可以包括其他要素、步驟、電腦 可執行指令或電腦可讀資料結構。有關這一點，此處公 開的其他實施例，可以部分地或全部地在電腦可讀介質 上實現，例如通過存儲電腦可執行指令或模組或通過使 用電腦可讀的資料結構。 【圖式簡單說明】 [0136] 圖1是根據本發明使用的在L2ME協定中交換的消息的實施 例的示意圖； [0137] 圖2是根據本發明的在SRV節點選擇處理中交換的消息的 實施例的不意圖， [0138] 圖3是根據本發明使用L2ME提交（submission)規則的 SRV節點選擇詢問的實施例的示意圖； [0139] 圖4是根據本發明在節點選擇處理中交換的每一消息的細 節的示意圖； [0140] 圖5是根據本發明在節點確認處理中交換的每一消息的細 節的示意圖； [0141] 圖6是IEEE SRV設備屬性資訊要素（IE)的表格； [0142] 圖7是資料處理系統中本發明的單晶片或多晶片模組的示 意圖。 【主要元件符號說明】 [0143] 客戶機節點102 NC 104 099133945 表單編號A0101 第24頁/共36頁 1003121584-0 201216644 [0144] 其他節點106第一消息108 [0145] 回應112消息114 [0146] 支持SRV的入口節點202 NC 204 [0147] 其他節點206波0 208 [0148] 波1 210 波2 212 [0149] 波3 214第一消息提交216 [0150] 〇 [0151] SSN請求218其他支持SRV的節點222 任何支持SRV的節點302 NC 304 [0152] 其他節點306波0 308 [0153] 波1 310支持SRV的節點318 [0154] 通告320入口節點402 [0155] NC 404支持SRV的節點406 〇 剛 波0 408入口節點502 [0157] NC 504支持SRV的節點506 [0158] 波0 508 波1 510 [0159] 位元（bit) 602八位元位元組（octets) 604 [0160] IE起始的偏移606屬性ID 608 [0161] 長度（UInteger8) 610 供應商 ID 612 [0162] TLV類型614 TLV長度616 099133945 表單編號A0101 第25頁/共36頁 1003121584-0 201216644 [0163] TVL值618資料處理系統700 [0164] 單晶片或多晶片模組702 I/O電路704 [0165] 週邊設備706處理器708 [0166] 記憶體710系統匯流排或其他互連部件712 [0167] 電路板720終端用戶系統730 099133945 表單編號A0I01 第26頁/共36頁 1003121584-0The format of the device attribute information element (IE) is defined in MoCA. ^ The MoCA specification specifies that when the attribute field is set to OxFF, the first 16 bits of the information field define the vendor ID. The vendor ID is assigned by MoCA to a specific vendor or entity. In any case, the supplier ID is vendor specific. In the next embodiment of the present invention, the TLV type, the TLV length (TLV LENGTH), and the TLV value (TLV VALUE) are vendor-specific ones, that is, for each of these fields, each vendor has a different value, which is supplied by Stipulated by the business, not by MoCA. This means that vendor-specific messages can be ignored—that is, the MoCA L2ME protocol transmits these messages on the MoCA without interpreting the contents of the vendor-specific messages. Thus, a node using the MoCA L2ME protocol transmits the IE to other nodes without attempting to interpret the vendor specific message. Accordingly, the SRV selection protocol, which is implemented using TLV types, TLV lengths, and TLV values, is an overlay agreement on the MoCA standard L2ME protocol. The table in Figure 6 illustrates the following attributes: Attribute ID 608; The value of the shard ID is OxFF. Length (UInteger8) 610 ; 099133945 Form No. A0101 Page 21 of 36 1003121584-0 201216644 [0123] The value of the length can be 1. In some embodiments of the invention, the actual length of the attribute IE is (length + 1) * 32 in units of bits. [0124] Vendor ID 612; [0125] The value of the Vendor ID is preferably assignable by the MoCA Alliance, and this allocation is referenced and incorporated herein. [0126] TLV type 614; (eg, SRV IEEE Audio Video Bridging System (AVB) (IEEE 802. lQat) may set the TLV type value to 0. In another embodiment of the present invention, for other suitable services, The TLV type may be specified as the same value or other suitable value.) [0127] TLV Length 616: (This length is the length required to implement the service specified by TVL Type 614) [0128] TVL value 618; [0129] It should be noted According to the present invention, in the TLV value field, the IE may include two bit masks (not shown): one for indicating whether the node is a node supporting SRV, and the other for indicating whether the node is an SRV. Select the node. [0130] In the first bit mask of the TVL value field, a value of 1 corresponding to the bit of the node ID indicates that the node is a node capable of supporting the SRV in the network. A value of 0 indicates that the node cannot be a node in the network that supports SRV. [0131] In the second bit mask of the TVL value field, a value of 1 corresponding to the bit of the node ID indicates that the node is selected as the SRV node in the network. A value of 0 indicates that the node is not the selected node. Whether the selected node exists on the network or whether there is no selected node on the network needs to be determined by the second bit mask. Then, the first mask indicates which nodes are supported. 099133945 Form No. A0101 22 Pages / Total 36 pages 1003121584-0 201216644 and based on selection criteria - for example with a minimum NI] - means that no node should be selected as an SRV node. The second mask also indicates to the other nodes supporting the SRV that a node has been selected as the node. 34 can prevent other nodes from requesting to become SRV nodes and cause conflicts. [0132] The present invention, selection and confirmation of m: If any of the following occurs, 1) the SRV selection node indicates that the selected SRV node has been removed from the network (due to failure, power state/shutdown, etc.), Or 2) The SRV-enabled node discovery processing transaction indicates that the SRV selection node is not found, then the node supporting the Rsv with the smallest node ID or other suitable selected node can start as the SRV and confirm the processing transaction by generating the L2ME SRV. Confirm this selection with other SRV-enabled nodes. [0133] FIG. 7 illustrates a single-wafer 戍 multi-wafer module 702' in a data processing system 700 in accordance with the present invention, which may be one or more integrated circuits. Data processing system 70 0 can include one or more of the following components: I/〇 circuit 704, peripheral device 706, processor 708, and memory? 10 * These components are communicatively coupled by a system bus or other interconnecting component 712 and assembled on a circuit board 720 included in the end user system 730. System 7A can be configured for use with a cable television tuner in accordance with the present invention. It should be noted that the system 700 is only an example, and the actual scope and spirit of the invention should be defined by the claims. [0134] The above describes systems and methods for providing a MoCA SSN selection policy. The present invention has been described in terms of several specific embodiments, and those skilled in the art will understand that various modifications and equivalents can be made without departing from the scope of the invention. For example, the art is 1003121584-0 099133945 Form No. A0101 Page 23 of 36 201216644 It is known to those skilled in the art that the steps shown in the figures can be performed in a different order and one or more of the steps shown are optional. . The methods and systems of the above-referenced embodiments may also include other elements, steps, computer executable instructions, or computer readable data structures. In this regard, other embodiments disclosed herein may be implemented in part or in whole on a computer readable medium, such as by storing computer executable instructions or modules or by using a computer readable data structure. BRIEF DESCRIPTION OF THE DRAWINGS [0136] FIG. 1 is a schematic diagram of an embodiment of a message exchanged in an L2ME protocol for use in accordance with the present invention; [0137] FIG. 2 is a message exchanged in an SRV node selection process in accordance with the present invention. [0138] FIG. 3 is a schematic diagram of an embodiment of an SRV node selection query using an L2ME submission rule in accordance with the present invention; [0139] FIG. 4 is an exchange exchanged in a node selection process in accordance with the present invention. Schematic diagram of details of a message; [0140] FIG. 5 is a diagram showing details of each message exchanged in a node confirmation process according to the present invention; [0141] FIG. 6 is a table of IEEE SRV device attribute information elements (IE); Figure 7 is a schematic illustration of a single or multi wafer module of the present invention in a data processing system. [Description of Main Component Symbols] [0143] Client Node 102 NC 104 099133945 Form Number A0101 Page 24 / Total 36 Page 1003121584-0 201216644 [0144] Other Node 106 First Message 108 [0145] Response 112 Message 114 [0146] SRV-enabled ingress node 202 NC 204 [0147] Other node 206 wave 0 208 [0148] Wave 1 210 wave 2 212 [0149] Wave 3 214 first message submission 216 [0150] 〇 [0151] SSN request 218 other support SRV Node 222 Any node that supports SRV 302 NC 304 [0152] Other node 306 wave 0 308 [0153] Wave 1 310 supports SRV node 318 [0154] Announce 320 Ingress node 402 [0155] NC 404 supports SRV node 406 〇 Rough wave 0 408 entry node 502 [0157] NC 504 supports SRV node 506 [0158] Wave 0 508 Wave 1 510 [0159] Bit 602 octet octets 604 [0160] IE Initial offset 606 attribute ID 608 [0161] Length (UInteger8) 610 Vendor ID 612 [0162] TLV Type 614 TLV Length 616 099133945 Form Number A0101 Page 25/36 Page 1003121584-0 201216644 [0163] TVL Value 618 Data Processing System 700 [0164] Single or Multi-Chip Module 702 I/O Power 704 [0165] peripheral device 706 processor 708 [0166] memory 710 system bus or other interconnect member 712 [0167] Circuit board 720 forms the end user system 730 099 133 945 Number A0I01 26 / Total 36 1003121584-0