Communication apparatus, control apparatus, and communication system
There is provided a communication apparatus including: a communication unit that performs radio communication; a control unit that controls an operation of sensing resources to be used in a communication scheme used for performing inter-device communication with other devices, in which the control unit controls to sense the resource in a predetermined minimum unit on a time axis.
1. A communication apparatus comprising:
a transceiver that performs radio communication;
a control circuitry that:
selects a first and second time-frequency resource, in units of symbols based on a slot format that has been received by the transceiver, to be used in a communication scheme for inter-device communication with a first and second device, respectively, and
performs the inter-device communication with the first and second devices via the selected first and second time-frequency resources,
wherein the first and second time-frequency resources are selected from a plurality of time-frequency resources of a numerology, the numerology being one of a plurality of different numerologies that are set orthogonally, each of the plurality of different numerologies corresponding to different sets of time-frequency resources,
wherein the first time-frequency resource is selected from within a sensing window based on a result of a power measurement sensing performed in the sensing window in a minimum unit of a transmission resource block in a frequency axis, and
wherein the second time-frequency resource is selected from within a resource selection window based on a time-frequency resource reservation status. the resource selection window following the sensing window.
2. The communication apparatus according to claim 1 , wherein the minimum unit of the transmission resource block comprises one or more symbols.
3. The communication apparatus according to claim 2 , wherein the minimum unit of the transmission resource block corresponds to a slot format received by the communication apparatus.
4. The communication apparatus according to claim 3 , wherein the slot format is received from a base station.
5. The communication apparatus according to claim 4 , wherein the slot format is periodically received from the base station.
6. The communication apparatus according to claim 4 , wherein the slot format is received from the base station at a point where a connection is made to a cell by the communication apparatus.
7. The communication apparatus according to claim 4 , wherein the slot format is received from the base station in response to a request to the base station.
8. The communication apparatus according to claim 4 , wherein the slot format is shared with the second device.
9. The communication apparatus according to claim 1 , wherein the control circuitry reserves the second time-frequency resource based on predetermined criteria.
10. The communication apparatus according to claim 9 , wherein the control circuitry broadcasts information regarding the second time-frequency resource.
11. The communication apparatus according to claim 9 , wherein the control circuitry transmits information to a base station indicating that the second time-frequency resource that has been reserved.
12. The communication apparatus according to claim 1 , the apparatus being a device provided on a mobile body.
13. The communication apparatus according to claim 12 , wherein the mobile body is a vehicle.
14. A method performed by a communication apparatus, the method comprising:
selecting a first and second time-frequency resource, in units of symbols based on a slot format that has been received by the transceiver, to be used in a communication scheme for inter-device communication with a first and second device, respectively, and
performing the inter-device communication with the first and second devices via the selected first and second time-frequency resources,
wherein the first and second time-frequency resources are selected from a plurality of time-frequency resources of a numerology, the numerology being one of a plurality of different numerologies that are set orthogonally, each of the plurality of different numerologies corresponding to different sets of time-frequency resources,
wherein the first time-frequency resource is selected from within a sensing window based on a result of a power measurement sensing performed in the sensing window in a minimum unit of a transmission resource block in a frequency axis, and
wherein the second time-frequency resource is selected from within a resource selection window based on a time-frequency resource reservation status, the resource selection window following the sensing window.
15. A non-transitory computer readable medium containing instructions for a method to be performed by a communication apparatus, the method comprising:
selecting a first and second time-frequency resource, in units of symbols based on a slot format that has been received by the transceiver, to be used in a communication scheme for inter-device communication with a first and second device, respectively, and
performing the inter-device communication with the first and second devices via the selected first and second time-frequency resources,
wherein the first and second time-frequency resources are selected from a plurality of time-frequency resources of a numerology, the numerology being one of a plurality of different numerologies that are set orthogonally, each of the plurality of different numerologies corresponding to different sets of time-frequency resources,
wherein the first time-frequency resource is selected from within a sensing window based on a result of a power measurement sensing performed in the sensing window in a minimum unit of a transmission resource block in a frequency axis, and
wherein the second time-frequency resource is selected from within a resource selection window based on a time-frequency resource reservation status, the resource selection window following the sensing window.