US 12,323,858 B2
CDMA based reservation channel transmission in V2V communications
Amit Kalhan, San Diego, CA (US); and Henry Chang, San Diego, CA (US)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 17/282,988
Filed by Kyocera Corporation, Kyoto (JP)
PCT Filed Oct. 9, 2019, PCT No. PCT/US2019/055361
§ 371(c)(1), (2) Date Apr. 5, 2021,
PCT Pub. No. WO2020/076924, PCT Pub. Date Apr. 16, 2020.
Claims priority of provisional application 62/748,960, filed on Oct. 22, 2018.
Claims priority of provisional application 62/743,852, filed on Oct. 10, 2018.
Prior Publication US 2021/0345183 A1, Nov. 4, 2021
Int. Cl. H04W 28/26 (2009.01); H04J 13/00 (2011.01); H04W 4/46 (2018.01); H04W 72/02 (2009.01); H04W 72/0446 (2023.01); H04W 72/0453 (2023.01)
CPC H04W 28/26 (2013.01) [H04J 13/004 (2013.01); H04W 4/46 (2018.02); H04W 72/02 (2013.01); H04W 72/0446 (2013.01); H04W 72/0453 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
spreading, by a wireless communication device that is a transmitter node of a vehicle ad-hoc network (VANET), a first reservation channel message with a first orthogonal code to generate an orthogonal spread first reservation channel message, the first reservation channel message identifying a first set of time-frequency resources being reserved for an upcoming data transmission from the wireless communication device to a target wireless communication device that is a target node in the VANET;
spreading, by the wireless communication device, a second reservation channel message with a second orthogonal code to generate an orthogonal spread second reservation channel message, the second reservation channel message identifying a second set of time-frequency resources being reserved for another upcoming data transmission from the wireless communication device to another target wireless communication device that is another target node in the VANET;
combining the orthogonal spread first reservation channel message and the orthogonal spread second reservation channel message;
spreading, by the wireless communication device, the combined orthogonal spread first reservation channel message and orthogonal spread second reservation channel message with a first spreading code, according to a code-division multiple access (CDMA) scheme, to generate a spread combined reservation channel message; and
transmitting, from the wireless communication device to at least one other wireless communication device that is another node of the VANET, a first reservation channel transmission using time-frequency resources selected from a reservation channel resource pool, the time-frequency resources allocated by a network for reservation channel transmissions for reserving data time-frequency resources for data transmissions, the first reservation channel transmission containing the spread combined reservation channel message, which contains the orthogonal spread first reservation channel message and the orthogonal spread second reservation channel message, the orthogonal spread first reservation channel message indicating to the at least one other wireless communication device that the first set of time-frequency resources are being reserved for the upcoming data transmission from the wireless communication device to the target wireless communication device, the orthogonal spread second reservation channel message indicating to the at least one other wireless communication device that the second set of time-frequency resources are being reserved for the another upcoming data transmission from the wireless communication device to the another target wireless communication device.