Multi-AP Specification V2.0 中文翻译 第8章

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8 CHANNEL SELECTION（信道选择）

    Multi-AP control messages enable the configuration of a Multi-AP Agent with parameters for channel selection.

Multi-AP 控制消息可以通过channel选择参数配置Multi-AP Agent。

8.1 Channel Preference Query and Report（首选信道查询与报告）

    Channel Preference Query and Channel Preference Report messages enable a Multi-AP Controller to query operating channel preferences for AP radios of a Multi-AP Agent.

信道首选项查询和信道首选项报告消息使Multi-AP Controller能够查询Multi-AP Agent的AP radios的运行信道首选项。

    If triggered, a Multi-AP Controller shall send a Channel Preference Query message per section 17.1.9 to a Multi-AP Agent.

如果触发该功能，Multi-AP Controller必须按照第17.1.9节格式发送一个信道首选查询信息给Multi-AP Agent.

    If a Multi-AP Agent receives a Channel Preference Query message, then it shall respond within one second with a Channel Preference Report message per section 17.1.10. The Channel Preference Report message shall contain the same MID that was received in the Channel Preference Query message. The Channel Preference Report message shall contain information regarding all the channels that a given radio of the Multi-AP Agent transmitting the report is temporarily unable to operate in, or prefers not to operate in, for each supported operating class as specified by the Multi-AP Agent (per Operating Classes field in the AP Radio Basic Capabilities TLV in section 17.2.7). Additionally, the Channel Preference Report message shall contain information regarding the channel separation (if any) that a given radio of the Multi-AP Agent requires between each of its own potential operating channels and the operating channel of another radio of the Multi-AP Agent, where the two radios may have one transmitting and the other receiving or transmitting simultaneously.

如果Multi-AP收到一个信道首选项查询消息，则它必须在一秒钟之内按照17.1.10节格式以一个信道首选项报告消息做出响应。信道首选项报告消息中的MID信息应该和收到的信道首选项查询消息的MID相同。信道首选项报告消息必须包含Multi-AP代理中指定radio的所有信道的信息:暂时无法使用的channel或者 不希望的使用的channel，对于多AP代理指定的每个受支持的操作类（在第17.2.7节中的“ AP无线电基本功能TLV”中的“每个操作类别”字段中）。此外，信道首选项报告消息必须包含有关Multi-AP代理中给定radio的信道隔离信息，隔离信息是指给定的radio与Multi-AP代理中的其它radios之间的channel，其中两个无线电可能有一个正在发射，而另一个则同时在接收或发射。 ？？？

    Note: Channels for which the Multi-AP Agent’s radio is statically (permanently) unable to operate are reported in the AP Radio Basic Capabilities TLV. A Channel Preference Report message does not include information on operating classes that are not supported by the corresponding radio of the Multi-AP Agent per the AP Radio Basic Capabilities TLV.

注意：

   在AP无线电基本功能TLV中报告中包含了Multi-AP Agent的radio静态（永久）无法运行的信道信息。 信道首选项报告消息的AP无线电基本功能TLV中，不包括Multi-AP Agent中相应radio不支持的功能。

    If a Multi-AP Controller receives a Channel Preference Report message from a Multi-AP Agent, the Multi-AP Controller shall delete all (if any) previously stored channel preference information from the Multi-AP Agent pertaining to all radios of that Multi-AP Agent and replace it with the information contained within the Channel Preference Report message.

如果多Multi-AP控制器从Multi-AP代理接收到信道偏好报告消息，则Multi-AP控制器必须删除先前存储的从Multi-AP代理收集的信道偏好信息（如果有），然后使用当前的报告替换它。

    If a Channel Preference Report does not specify a preference for a particular channel within a supported operating class as specified by the Multi-AP Agent for a given radio, the Multi-AP Controller shall infer that the Multi-AP Agent is indicating the highest preference (preference score 15) for the channel in that operating class on the corresponding radio.

对于一个Multi-AP代理指定的radio，如果信道首选项报告未针对特定信道指定首选项信道，Multi-AP控制器应推断Multi-AP Agent在相应radio上指示该操作类中的信道的最高优先级（优先级得分15）。

If a Channel Preference Report contains zero Channel Preference TLVs and zero Radio Operation Restriction TLVs, the Multi-AP Controller shall infer that the Multi-AP Agent is indicating the highest preference (preference score 15) for all channels and operating classes supported by all of the Multi-AP Agent’s radios.

如果信道首选项报告包含零个信道首选项TLV和零个radio操作限制TLV，则Multi-AP控制器应推断出Multi-AP代理对所有信道和所有Multi-AP代理的radio受支持的操作类别指示最高优先级（优先级得分15）。

    The mechanism by which a Multi-AP Agent determines and reevaluates its channel preferences is implementation specific. However, a Multi-AP Agent shall indicate a channel is operable when indicating preferences in a Cha