Simultaneous communication with multiple wireless communication devices

Abstract

Embodiments of the present invention relate to methods and systems for simultaneous communication with multiple wireless communication devices. In some embodiments, a method for simultaneous communication with multiple wireless communication devices includes receiving, using a plurality of antennas at a first wireless station, a plurality of packets, comprised of orthogonal frequency division multiplexing (OFDM) wireless signals, transmitted simultaneously from a plurality of other wireless stations wherein each of the simultaneously transmitted packets includes a plurality of frequency tones, frequency domain transform the received packets, grouping frequency domain transform outputs for each subcarrier, determining a difference between subcarrier groups formed over different sample sets, and determining a set of weights for each subcarrier, wherein the weights are selected such that the first wireless station can at least one of detect or demodulate the received plurality of packets.

Description

Technical field [0001] Embodiments of the present invention generally relate to methods and systems for simultaneously communicating with multiple wireless communication devices. Background technique [0002] A wireless local area network (WLAN) provides a means to transmit data between an access point (AP) and a client device using wireless signaling as defined in the IEEE 802.11 standard. The original WLAN standard (802.11a / b / g) was based on the assumption that only one AP or client device can transmit on a specific channel at a time and the transmitting device only transmits one set of information at a time. Later, the 802.11n standard introduced a method of sending multiple information sets at the same time using a technology called Multiple Input Multiple Output (MIMO), but it still assumes that only one device can send at a time and these information sets will be sent to the only one. A client device or a group of client devices that all receive the same information. Late...

AI Technical Summary

Problems solved by technology

Furthermore, 802.11 does not have strict frequency alignment, strict timing control, or signal design characteristics that allow simultaneous determination of channel estimates from various sources

Therefore, overcoming the limitation of being able to receive multiple 802.11 signals simultaneously using conventional techniques is not practical for 802.11

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