US Patent No. 10,142,960

MULTI-USER RANGING WITH UNASSOCIATED STATIONS


Patent No. 10,142,960
Issue Date November 27, 2018
Title Multi-user Ranging With Unassociated Stations
Inventorship Liwen Chu, San Ramon, CA (US)
Sagar A. Tamhane, Fremont, CA (US)
Christian R. Berger, San Jose, CA (US)
Niranjan Grandhe, San Jose, CA (US)
Hongyuan Zhang, Fremont, CA (US)
Hui-Ling Lou, Sunnyvale, CA (US)
Assignee Marvell World Trade Ltd., St. Michael (BB)

Claim of US Patent No. 10,142,960

1. A method for multi-user (MU) communications in a wireless communication network, the MU communications between a first communication device that manages the wireless communication network and a plurality of second communication devices, wherein a first set of one or more second communication devices is not associated with the wireless communication network and has not been assigned association identifiers (IDs) by the first communication device, and wherein a second set of one or more second communication devices is associated with the wireless communication network and has been assigned association IDs by the first communication device, the method comprising:selecting, at the first communication device, one or more respective preliminary IDs for one or more second communication devices in the first set;
generating, at the first communication device, a trigger frame, the trigger frame including
i) one or more respective first fields respectively indicating one or more first frequency resource and/or spatial stream allocations to one or more second communication devices in the first set, the one or more respective first frequency resource and/or spatial stream allocations respectively indicated by the one or more respective preliminary IDs, and
ii) one or more respective second fields respectively indicating the one or more preliminary IDs selected for the one or more second communication devices in the first set, wherein the trigger frame further indicates respective one or more medium access control (MAC) addresses of the one or more second communication devices in the first set; and
transmitting, with the communication device, the trigger frame to initiate at least an uplink (UL) MU transmission by multiple second communication devices according to the one or more first frequency resource and/or spatial stream allocations in the trigger frame.