Short feedback procedure for signalling multiple technologies in wireless networks

A communication method in a wireless network, comprising the following steps at a polling station:

• sending, to polled stations, a trigger frame reserving a plurality of resource unit, RU, tone sets for responses by polled stations, the trigger frame signaling one or more 802.11 standard versions defining compliant technologies being available at the polling station, and
• receiving, from at least one responding station on a responding RU tone set, a response in relation to at least one signaled 802.11 standard version.

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The method of claim 27, wherein the NDP feedback report response is provided in relation to two or more signaled 802.11 standard versions.

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The method of claim 27, wherein the signaling of the one or more 802.11 standard versions is announced, in the NFRP trigger frame, through a Feedback Type subfield set to a value different from 0 in the NFRP trigger frame.

The method of claim 27, wherein each RU tone set is made of a plurality of groups of tones, each group being associated with a respective one of the signaled 802.11 standard versions.

The method of claim 27, wherein the NFRP trigger frame may specify a range of association identifiers, AIDs, designating polled stations allowed to send NDP feedback report responses on the RU tone sets.

The method of claim 27, wherein an association identifier, AID, field in the NFRP trigger frame may include a predefined AID value defining a random access for the polled stations to the plurality of RU tone sets.

A communication device comprising a processor configured for:

• receiving, from a polling station, a trigger frame reserving a plurality of resource unit, RU, tone sets for responses by polled stations, the trigger frame signaling one or more 802.11 standard versions defining compliant technologies being available at the polling station,
• determining at least one 802.11 standard version the polled station is compatible with from amongst the one or more signaled 802.11 standard versions, and
• sending a response in relation to the compatible 802.11 standard version or versions, on a selected responding RU tone set.

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A communication device comprising a processor configured for:

• sending, to polled stations, a trigger frame reserving a plurality of resource unit, RU, tone sets for responses by polled stations, the trigger frame signaling one or more 802.11 standard versions defining compliant technologies being available at the polling station, and
• receiving, from at least one responding station on a responding RU tone set, a response in relation to at least one signaled 802.11 standard version.