Multi-AP Specification V2.0 中文翻译 第11章

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11 Client steering

Multi-AP control messages enable efficient steering of STAs between BSSs in a Multi-AP network. These control messages enable steering of client STAs which support 802.11v BSS Transition Management (BTM) as well as client STAs which do not support BTM.

Multi-AP控制消息使得在Multi-AP网络中BSS之间可以有效的STAs steering。这些控制消息可以控制支持802.11v BSS转换管理（BTM）的客户端STAs以及不支持BTM的客户端STAs。

11.1 Multi-AP Controller initiated steering mandate

A Multi-AP Controller uses the Steering Mandate mechanism to mandate a Multi-AP Agent to attempt steering of one or more associated STAs.

Multi-AP控制器使用steering授权机制来授权Multi-AP代理尝试steering一个或多个关联的STAs。

If triggered, a Multi-AP Controller shall send a Client Steering Request message with Request Mode bit set to one indicating a Steering Mandate to a Multi-AP Agent per section 17.1.25. If the Multi-AP Agent implements Profile-1, the Multi-AP Controller shall include a Steering Request TLV into the Client Steering Request message. If the Multi-AP Agent implements Profile-2 and all the STA(s) specified in the message are Agile Multiband capable, a Multi-AP Controller that implements Profile-2 shall include a Profile-2 Steering Request TLV into the Client Steering Request message. If the  Multi-AP Agent implements Profile-2 and all the STAs to be steered in the message are Agile Multiband capable, a Multi- AP Controller that implements Profile-2 shall include a Profile-2 Steering Request TLV into the Client Steering Request message. If the Multi-AP Agent implements Profile-2 and not all the STAs to be steered are Agile Multiband capable, then the Multi-AP Controller shall include a Steering Request TLV into the Client Steering Request message to steer the STAs which are not Agile Multiband capable, and a Profile-2 Steering Request TLV to steer the STAs which are Agile Multiband capable.

如果触发，根据第17.1.25节，Multi-AP控制器应向Multi-AP代理发送一条Client steering请求消息，请求模式字段设置为1，表明是一个steering授权指令。如果Multi-AP代理实现了Profile-1，Multi-AP控制器应该包含一个steering 请求TLV到Client Steering请求信息中。如果Multi-AP代理实现Profile-2，并且消息中指定的所有STAS都支持Agile Multi-Band（支持敏捷多频带能力的client），则实现Profile-2的Multi-AP控制器应在客户端steering请求消息中包含Profile-2 steering请求TLV。如果Multi-AP代理实现Profile-2，并且消息中要steering的所有STAS都具有Agile Multi-Band，则实现Profile-2的Multi-AP控制器应在客户端steering请求消息中包含Profile-2 steering请求TLV。如果Multi-AP代理实现Profile-2，并且并非所有要引导的STAS都具有Agile Multi-Band，则Multi-AP控制器应在客户端steering请求消息中包含一个steering请求TLV，以引导不支持敏捷多频带的STAS，并且包含一个Profile-2 steering请求TLV来控制具有Agile Multi-Band的STAs。

If a Multi-AP Agent receives a Client Steering Request message with Request Mode bit set to one, then it shall respond within one second with a 1905 Ack message. If a STA specified in the Client Steering Request message is not associated with the source BSSID specified in the same message (an error scenario), for each of those unassociated STAs, the Multi-AP Agent shall include an Error Code TLV with the reason code field set to 0x02 and the STA MAC address field included per section 17.2.36 in the 1905 Ack message.

如果Multi-AP代理接收到客户端steering请求消息，且请求模式字段设置为1，则它应在1秒内用1905 Ack消息响应。如果Client steering请求消息中指定的STAS与相同消息中指定的源BSSID不关联（错误情况），则对于这些未关联的STAS，根据第17.2.36节，Multi-AP代理应包括一个错误代码TLV在1905 Ack报文中，原因代码字段设置为0x02，报文中应也包含STA MAC。

If a Multi-AP Agent receives a Client Steering Request message with Request Mode bit set to one indicating a Steering Mandate, the Multi-AP Agent shall attempt to steer each STA identified in the request to the corresponding target BSS specified in the request message. If the Target BSSID specified for a STA in the Client Steering Request message is wildcard, the Multi-AP Agent shall attempt to steer the STA to the most suitable target BSS it has identified for that STA.

如果Multi-AP代理接收到Client steering请求消息，且请求模式字段设置为1则表明是一个steering授权报文，则Multi-AP代理应尝试将请求中标识的每个STAS引导到请求消息中指定的相应目标BSS（根据报文信息，尝试让STA去连接对应的BSS）。如果在客户端steering请求消息中为STAS指定的目标BSSID是通配符，则Multi-AP代理应尝试将STAS引导到最合适的目标BSS。

11.2 Multi-AP Controller initiated steering opportunity

A Multi-AP Controller uses the Steering Opportunity mechanism to provide a time window for a Multi-AP Agent to steer one or more associated STAs.

Multi-AP控制器使用steering机会机制为Multi-AP代理提供一个时间窗口来引导一个或多个关联的STAs开始steering。

If triggered, a Multi-AP Controller shall send a Client Steering Request message with Request Mode bit set to zero indicating a Steering Opportunity to a Multi-AP Agent per section 17.1.25.

如果触发，Multi-AP控制器应根据第17.1.25节向Multi-AP代理发送一条Client steering请求消息，请求模式字段设置为0，表示开始一次steering。

If a Multi-AP Controller sends a Client Steering Request message with Request Mode bit set to zero indicating a Steering Opportunity to a Multi-AP Agent, it shall not send another Client Steering Request message with Request Mode bit set to zero to the same Multi-AP Agent until the length of time indicated in the Steering Opportunity Window field of the field message has expired, or the Multi-AP Controller has received a Steering Completed message (see section 17.1.28) from the Multi-AP Agent.

如果Multi-AP控制器向Multi-AP代理发送一条Client steering请求消息，请求模式字段设置为

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