Communication apparatus and base station
The techniques disclosed herein feature a user equipment (UE), a base station, and methods for a UE and abase station. The UE comprises a transceiver which, in operation receives coverage area information indicating a coverage area of at least one candidate satellite beam relative to a satellite location of at least one satellite generating, respectively, the at least one candidate satellite beam; and circuitry which, in operation, determines, based on the received coverage area information, ephemeris data of the at least one satellite generating the at least one candidate satellite beam, and a location of the user equipment, a target satellite beam for switching out of the at least one candidate satellite beam and a switching timing for switching to the target satellite beam, and controls the transceiver to perform switching to the determined target satellite beam at the determined switching timing.
1 . A communication apparatus, comprising:
a transceiver, which, in operation, receives area information indicating an area at least one candidate satellite beam covers; and
circuitry, which, in operation:
determines whether the communication apparatus is in the area the at least one candidate satellite beam covers based on the area information, and a location of the communication apparatus; and
in response to the determination, performs a measurement of a signal quality or a signal strength of the at least one candidate satellite beam, wherein,
the area information includes, for each of the at least one candidate satellite beam:
a satellite beam direction; and
a center and a radius of the coverage area; and
a target satellite beam of the at least one candidate satellite beam has a one-to-one correspondence with a serving cell.
2 . The communication apparatus according to claim 1 , wherein the area information is received in system information.
3 . The communication apparatus according to claim 1 , wherein the area information includes, for each of the at least one candidate satellite beam:
a polygon defining the coverage area in a non-overlapping manner.
4 . The communication apparatus according to claim 1 , wherein the transceiver, in operation, transmits a location report indicating the location of the communication apparatus or an indication of a target satellite beam of the at least one candidate satellite beam.
5 . A method, comprising:
receiving area information indicating an area at least one candidate satellite beam covers;
determining whether the communication apparatus is in the area the at least one candidate satellite beam covers based on the area information, and a location of the communication apparatus; and
in response to the determination, performing a measurement of a signal quality or a signal strength of the at least one candidate satellite beam, wherein
the area information includes, for each of the at least one candidate satellite beam:
a satellite beam direction; and
a center and a radius of the coverage area, and
a target satellite beam of the at least one candidate satellite beam has a one-to-one correspondence with a serving cell.
6 . An integrated circuit, which comprises circuitry configured to:
control receiving area information indicating an area at least one candidate satellite beam covers;
control determining whether the communication apparatus is in the area the at least one candidate satellite beam covers based on the area information, and a location of the communication apparatus; and
in response to the determination, control performing a measurement of a signal quality or a signal strength of the at least one candidate satellite beam, wherein,
the area information includes, for each of the at least one candidate satellite beam:
a satellite beam direction; and
a center and a radius of the coverage area, and
a target satellite beam of the at least one candidate satellite beam has a one-to-one correspondence with a serving cell.