US 10,462,820 B2
Method and device for collision avoidance
Cong Shi, Beijing (CN); and Gen Li, Beijing (CN)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 15/747,807
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 4, 2015, PCT No. PCT/CN2015/086014
§ 371(c)(1), (2) Date Jan. 26, 2018,
PCT Pub. No. WO2017/020243, PCT Pub. Date Feb. 9, 2017.
Prior Publication US 2018/0220461 A1, Aug. 2, 2018
Int. Cl. H04W 72/04 (2009.01); H04W 74/08 (2009.01); H04L 12/413 (2006.01); H04W 16/28 (2009.01); H04W 72/08 (2009.01); H04W 28/04 (2009.01)
CPC H04W 74/0816 (2013.01) [H04L 12/413 (2013.01); H04W 16/28 (2013.01); H04W 72/046 (2013.01); H04W 72/082 (2013.01); H04W 28/04 (2013.01)] 17 Claims
OG exemplary drawing
1. A method implemented by a device in a wireless communication network, comprising:
determining a first beam direction with a low interference condition by detecting potential interference associated with first data, the first beam direction to be used for transmitting the first data, wherein the detecting potential interference associated with the first data is based on whether the first data will be interfered by other data transmitted in the first beam direction and/or whether the first data will cause interference to other data in the first beam direction, and
wherein detecting the potential interference comprises:
detecting a second message transmitted by a further device in the wireless communication network, the second message indicating that second data is to be transmitted by the further device in a second beam direction; and
in response to detecting the second message, determining whether the potential interference exists between the first data and the second data;
broadcasting a first message indicating the first beam direction for a predetermined time period;
in response to expiration of the predetermined time period, transmitting the first data in the first beam direction,
responsive to the first data to be transmitted in the first beam direction, performing a listen-before-talk (LBT);
determining whether a channel is idle based on the LBT; and
based on determining whether the channel is idle, determining if the second data is indicated as being transmitted in the second beam direction.