Radio vehicle sidelink discovery
A discoverer user equipment sends a discovery announcement to a discoveree user equipment via a sidelink service. The announcement includes criteria for a service sought by discoverer. The discoveree assesses the announcement and may respond to the discoverer. The discovery announcement may be a target search discovery announcement or a self-advertisement discovery announcement, and may be unicast, groupcast, or broadcast. The discoverer and discoveree may perform synchronization in support of V2X sidelink communication and may collect driving information pertaining to vehicles associated with the discoverer and discoveree, respectively, such as driving intention, positioning, and environment information. The discoverer may request an authorization for the discovery announcement, and the request may include the driving information. The information in the announcement and the response may include discoverer and discoveree service, platform, and radio capabilities, source identifiers, driving information, radio measurements, group identifiers, and protocol configuration parameters.
1. A discoverer user equipment apparatus, comprising a processor, a memory, communication circuitry, and computer-executable instructions stored in the memory which, when executed by the processor, cause the discoverer user equipment apparatus to:
send, via a sidelink communication channel, a sidelink transmission comprising a discovery announcement comprising a logical channel identity of a sidelink communication logical channel, the discovery announcement further comprising one or more criteria for one or more services sought by the discoverer user equipment apparatus;
configure the communications circuitry to monitor for a response to the discovery announcement, wherein the response to the discovery announcement is associated with the sidelink communication logical channel; and;
receive, from a discoveree user equipment apparatus, the response, the response comprising a discovery response pertaining to the discovery announcement and comprising the logical channel identity of the sidelink communication logical channel, the discovery response further comprising one or more criteria for one or more services provided by the discoveree user equipment apparatus.
2. The discoverer user equipment apparatus of claim 1 , wherein the discovery announcement comprises discoverer information, the discoverer information comprising one or more of the following data pertaining to the discoverer user equipment apparatus: service capabilities; service platform capabilities; radio capabilities; one or more source identifiers; driving information comprising one or more of driving intention information, positioning information, environment information; radio measurements; one or more identifiers of one or more groups the discoverer user equipment apparatus belongs to; and protocol configuration parameters for future V2X communication.
3. The discoverer user equipment apparatus of claim 1 , wherein the one or more criteria for one or more services comprise one or more of the following: one or more services of interest, QoS requirements for the one or more service of interest, a TX profile for the one or more service of interest, radio carrier frequency parameters for the one or more services of interest, and one or more authorized PLMN for one or more services of interest.
4. The discoverer user equipment apparatus of claim 3 , wherein the discovery announcement comprises discoveree information, the discoveree information pertaining to the one or more discoveree user equipment apparatuses and comprising one or more of: service capabilities; service platform capabilities; radio capabilities; one or more identifiers of one or more groups to which the one or more discoveree user equipment apparatuses belong; and, protocol configuration parameters for future V2X communication.
5. The discoverer user equipment apparatus of claim 1 , further comprising a mobile termination unit that implements radio transmission/reception and related functions, wherein the mobile termination unit is adapted to:
perform filtering or admission control of the one or more discoveree user equipment apparatuses, the filtering or the admission control being based at least in part on information in the discovery announcement and information in the discovery response; and
provide, to terminal equipment, one or more of results of the filtering or admission control.
6. The discoverer user equipment apparatus of claim 1 , wherein the logical channel identity is predefined in a protocol specification.
7. The discoverer user equipment apparatus of claim 1 , wherein the sidelink communication logical channel is a separate logical channel, specific to the transmission of the discovery announcement.
8. The discoverer user equipment apparatus of claim 1 , wherein the sidelink communication logical channel is a Sidelink Discovery Control Channel (SDCCH), and wherein the SDCCH is multiplexed with a Sidelink Traffic Channel (STCH).
9. The discoverer user equipment apparatus of claim 1 , wherein a sidelink communication specific radio bearer is used for the transmission of the response.
10. The discoverer user equipment apparatus of claim 1 , wherein a discovery sidelink communication specific pre-configured radio bearer is used for the transmission of the discovery announcement.
11. A discoveree user equipment apparatus, comprising a processor, a memory, communication circuitry, and computer-executable instructions stored in the memory which, when executed by the processor, cause the discoveree user equipment apparatus to:
configure the communications circuitry to monitor discovery announcements;
receive, via a sidelink communication channel, a sidelink transmission comprising a discovery announcement, and comprising a logical channel identity of a sidelink communication logical channel, the discovery announcement further comprising one or more criteria for one or more services sought by a discoverer user equipment apparatus;
evaluate the discovery announcement wherein a response to the discovery announcement is associated with the sidelink logical communication channel; and
if the discoveree user equipment apparatus may provide the service sought by the discoverer user equipment apparatus, send, to the discoverer user equipment apparatus via the sidelink communication logical channel, the response, the response comprising a discovery response pertaining to the discovery announcement and comprising the logical channel identity of the sidelink communication logical channel, the discovery response further comprising one or more criteria for one or more services provided by the discoveree user equipment apparatus.
12. The discoveree user equipment apparatus of claim 11 , wherein:
the discovery announcement further comprises discoverer information and discoveree information;
the discoverer information pertains to the discoverer apparatus and comprises one or more: service capabilities; service platform capabilities; radio capabilities; one or more source identifiers; driving information comprising one or more of driving intention information, positioning information, environment information; radio measurements; one or more identifiers of one or more groups the discoverer user equipment apparatus belongs to; and protocol configuration parameters for future V2X communication;
the discoveree information pertains to the one or more discoveree user equipment apparatuses and comprises one or more of: service capabilities; service platform capabilities; radio capabilities; one or more identifiers of one or more groups to which the one or more discoveree user equipment apparatuses belong; and, protocol configuration parameters for future V2X communication; and
evaluating the discovery announcement comprises comparing the discoverer information, the discoveree information, and the one or more criteria for a service sought by the discoverer user equipment apparatus to information regarding services provided by the discoveree user equipment apparatus.
13. The discoveree user equipment apparatus of claim 11 , wherein the discovery response comprises one or more of a request for V2X communication establishment, V2X protocol configuration parameters for future V2X communications, and a V2X communication traffic data packet.
14. The discoveree user equipment apparatus of claim 11 , wherein the discovery response comprises information pertaining to the discover apparatus comprising one or more of: service capabilities; service platform capabilities; radio capabilities; one or more source identifiers; one or more identifiers of one or more groups the discoveree user equipment apparatus belongs to; radio measurements; QoS requirements, a TX profile, radio carrier frequency parameters, one or more authorized PLMNs discoveree perspective; and driving information, the driving information comprises one or more of driving intention information, positioning information, and environment information.
15. The discoveree user equipment apparatus of claim 11 , wherein the sidelink communication logical channel is a separate logical channel, specific to the receiving of the discovery announcement.
16. The discoveree user equipment apparatus of claim 11 , wherein the sidelink communication logical channel is a Sidelink Discovery Control Channel (SDCCH), and wherein the SDCCH is demultiplexed from a Sidelink Traffic Channel (STCH).
17. The discoveree user equipment apparatus of claim 11 , wherein a sidelink communication specific radio bearer is used for the receiving of the discovery announcement.
18. The discoveree user equipment apparatus of claim 11 , wherein a discovery sidelink communication specific pre-configured radio bearer is used for the receiving of the discovery announcement.