Method and apparatus for beam recovery in communication network
AssigneeElectronics and Telecommunications Research Institute
InventorsJung Im KIM, Young Jo KO, Jun Sik KIM, Soon Gi PARK, Sung Cheol CHANG, Sun Mi JUN, Hee Sang CHUNG, Yong Seouk CHOI
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Abstract
A method of a base station may comprise: detecting a beam failure for a terminal; in response to detecting the beam failure, transmitting a beam recovery early indicator (BREI) to the terminal based on a beam sweeping scheme; receiving a BREI response from the terminal; and identifying a preferred beam of the terminal based on reception of the BREI response.
Claims20
A method of a base station, comprising:
- detecting a beam failure for a terminal;
- in response to detecting the beam failure, transmitting a beam recovery early indicator (BREI) to the terminal based on a beam sweeping scheme;
- receiving a BREI response from the terminal;
- and
- identifying a preferred beam of the terminal based on reception of the BREI response.
A method of a terminal, comprising:
- receiving, from a base station, one or more downlink control information (DCIs) including a beam recovery early indicator (BREI) and transmission resource information of a BREI response;
- determining a beam in which a DCI with a best reception quality among the one or more DCIs is received as a preferred beam of the terminal;
- and
- transmitting the BREI response to the base station using the preferred beam in a first BREI response resource indicated by the transmission resource information.
A base station comprising at least one processor, wherein the at least one processor causes the base station to perform:
- detecting a beam failure for a terminal;
- in response to detecting the beam failure, transmitting a beam recovery early indicator (BREI) to the terminal based on a beam sweeping scheme;
- receiving a BREI response from the terminal;
- and
- identifying a preferred beam of the terminal based on reception of the BREI response.
Dependencies are inferred from the claim text.