US 12,349,216 B2
Communication apparatus and communication method for enhanced direct link communication
Rojan Chitrakar, Singapore (SG); Lei Huang, Singapore (SG); and Yoshio Urabe, Nara (JP)
Assigned to Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Appl. No. 17/618,847
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
PCT Filed Apr. 23, 2020, PCT No. PCT/SG2020/050249
§ 371(c)(1), (2) Date Dec. 13, 2021,
PCT Pub. No. WO2021/002802, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 10201906255Q (SG), filed on Jul. 4, 2019.
Prior Publication US 2022/0312513 A1, Sep. 29, 2022
Int. Cl. H04W 76/30 (2018.01); H04W 28/02 (2009.01); H04W 76/12 (2018.01); H04W 76/14 (2018.01)
CPC H04W 76/14 (2018.02) [H04W 28/0278 (2013.01); H04W 76/12 (2018.02); H04W 76/30 (2018.02)] 6 Claims
OG exemplary drawing
 
1. A communication apparatus configured to communicate wirelessly with an access point (AP) on a first channel, the communication apparatus comprising:
circuitry, which, in operation, generates a channel use permission request frame, the channel use permission request frame comprising information indicating the communication apparatus, another communication apparatus and a second channel that is different from the first channel;
a transmitter, which, in operation, transmits the generated channel use permission request frame to the AP to seek permission from the AP to use the second channel for direct link communication with the another communication apparatus; and
a receiver, which, in operation, receives a channel use permission response frame from the AP permitting use of the second channel, wherein the communication apparatus is further configured to communicate with the another communication apparatus on a direct link in the second channel after receiving the channel use permission response frame,
wherein the direct link is a Tunneled Direct Link Setup (TDLS),
wherein the receiver is further configured to receive a trigger frame from the AP, and wherein the transmitter is further configured to transmit, on the direct link, one or more data frames to the another communication apparatus after receiving the trigger frame, and
wherein the trigger frame comprises information indicative of a MAC Address of the another communication apparatus, an Allowed Access Category (AC) and a maximum transmission power level, wherein the one or more data frames are to be transmitted to the MAC Address and are from a traffic identifier (TID) specified in the Allowed AC or a higher AC, and wherein the one or more data frames are transmitted with a transmission power that is less than the maximum transmission power level.