US Patent No. 10,368,371

METHOD AND APPARATUS FOR LISTENING BASED TRANSMISSION


Patent No. 10,368,371
Issue Date July 30, 2019
Title Method And Apparatus For Listening Based Transmission
Inventorship Cong Shi, Beijing (CN)
Gen Li, Beijing (CN)
Assignee TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)

Claim of US Patent No. 10,368,371

1. A method at a communications device of a first type and operable on an unlicensed spectrum, the method comprising:identifying a beam direction of a beam for a communications device of a second type when there is data directed to the communications device of the second type;
obtaining a backoff counter for the beam direction;
listening simultaneously to a number of beam directions including the beam direction, wherein the number of beam directions is more than one and is selected based on a number of pending beam directions and a number of receiving radio frequency chains of the communications device of the first type, each pending beam direction covering at least one communications device of the second type to which the communications device of the first type has data to be transmitted, and the number of beam directions is selected to be:
equal to the number of receiving radio frequency chains if the number of pending beam directions is greater than the number of receiving radio frequency chains, or
equal to the number of pending beam directions otherwise,
wherein another backoff counter for another beam direction of the number of beam directions is updated, and wherein the another beam direction has been listened to; and
scheduling transmission to the communications device of the second type in the beam direction when the backoff counter corresponding to the beam direction reaches a certain threshold.