Nokia Technologies Oy

Namyoon Lee

Sayantan Choudhury

Esa Juhani Tuomaala

Sarabjot Singh

Enrico-Henrik Rantala

An access point in a random access wireless network is presented, which performs medium access control for transmissions from a plurality of stations to the access point using a carrier sense multiple access protocol. The CSMA protocol is based on the access point having a variable sensitivity level to detecting other transmissions on a wireless channel in order to avoid data collisions. In a dense network environment, the sensitivity level can be reduced to avoid detecting transmissions to other access points, and thus improve area efficiency.

Sensitivity tuning in wireless networks

Uplink data indication transmission(s) are received over a subband and over OFDM symbol(s) from STA(s) in a wireless communication system. The received uplink data indication transmission(s) are decoded to determine a unique codeword for each of the STA(s). From the determined unique codewords and using a mapping between station IDs and codewords in a codebook, a unique station ID is determined for each of the STA(s). For STA(s) determined to have sent the uplink data indication, other operations are performed to prepare for subsequent reception of uplink data from the STA(s) determined to have sent the uplink data indication.

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Walnut Creek, CA, United States of America

Namyoon Lee