Device for and method of radio access technology selection among multiple radio access technologies
Systems and methods of providing a V2X communications are generally described. A geographically-limited, operator-independent mapping table is used that maps between groups of V2X applications each associated with a different application category and a different RAT preferred for the V2X application category. Each grouping is based on fulfillment of one or more KP Is for the associated V2X application category. Multiple RA Ts are prioritized if able to fulfill the KP Is. The mapping table is modified based on the RATs supported by the V2X UE. Carrier aggregation is used when simultaneous transmission on different RATs is desired.
1 . An apparatus, comprising:
at least one processor configured to cause a network function, contained in an evolved node B (eNB), a next generation node B (gNB), a mobile management entity (MME), or a fifth generation core network (5G CN) element, to:
receive a request for vehicle-to-anything (V2X) service authorization for a V2X user equipment (UE), wherein the request for V2X service authorization includes a list of V2X radio access technologies (RATs) supported by the V2X UE;
generate an authorization response including a mapping of a plurality of V2X application categories to the V2X RATs supported by the UE, wherein association of a V2X application with a V2X application category of the plurality of V2X application categories is based on a provider service identifier (PSID) associated with the V2X application;
provide, to the V2X UE, the authorization response;
generate reference signals for transmission to the V2X UE;
receive, in response to transmission of the reference signals to the V2X UE, a report for handover based on the reference signals from the V2X UE; and
generate, in response to a determination that handover to another radio access network (RAN) is appropriate, instructions in control signaling to the V2X UE, the instructions comprising instructions to change at least one V2X application category in the mapping to use a different RAN, wherein the instructions further comprise an indication that one or more other applications are unable to be used due to handover of the V2X UE.
2 . The apparatus of claim 1 , wherein the at least one processor is further configured to cause the UE to:
verify the request for V2X service authorization through communication with a home subscriber server (HSS) in a home network of the V2X UE.
3 . The apparatus of claim 2 , wherein the authorization response is generated in response to a positive verification of the request for V2X service authorization.
4 . The apparatus of claim 1 , wherein the mapping is an operator independent mapping table that maps the plurality of V2X application categories to different preferred RATs.
5 . The apparatus of claim 1 , wherein the mapping provides interoperability, free from load balancing among a plurality of RATs, among V2X UEs.
6 . The apparatus of claim 1 , wherein the mapping maps PSIDs of V2X applications to V2X application categories and respective associations between V2X application categories and associated RATs.
7 . A method, comprising:
by a network function, contained in an evolved node B (eNB), a next generation node B (gNB), a mobile management entity (MME), or a fifth generation core network (5G CN) element:
receiving a request for vehicle-to-anything (V2X) service authorization for a V2X user equipment (UE), wherein the request for V2X service authorization includes a list of V2X radio access technologies (RATs) supported by the V2X UE;
generating an authorization response including a mapping of a plurality of V2X application categories to the V2X RATs supported by the UE, wherein association of a V2X application with a V2X application category of the plurality of V2X application categories is based on a provider service identifier (PSID) associated with the V2X application;
providing, to the V2X UE, the authorization response;
generating reference signals for transmission to the V2X UE;
receiving, in response to transmission of the reference signals to the V2X UE, a report for handover based on the reference signals from the V2X UE; and
generating, in response to a determination that handover to another radio access network (RAN) is appropriate, instructions in control signaling to the V2X UE, the instructions comprising instructions to change at least one V2X application category in the mapping to use a different RAN, wherein the instructions further comprise an indication that one or more other applications are unable to be used due to handover of the V2X UE.
8 . The method of claim 7 , further comprising:
verifying the request for V2X service authorization through communication with a home subscriber server (HSS) in a home network of the V2X UE.
9 . The method of claim 8 , wherein the authorization response is generated in response to a positive verification of the request for V2X service authorization.
10 . The method of claim 7 , wherein if at least one of the plurality of V2X application categories is associated with multiple RATs, the method further comprises:
prioritizing the multiple RATs for respective V2X application categories of the at least one of the plurality of the V2X application categories.
11 . A non-transitory computer readable storage medium storing program instructions executable by one or more processors to cause a network function, contained in an evolved node B (eNB), a next generation node B (gNB), a mobile management entity (MME), or a fifth generation core network (5G CN) element, to:
receive a request for vehicle-to-anything (V2X) service authorization for a V2X user equipment (UE), wherein the request for V2X service authorization includes a list of V2X radio access technologies (RATs) supported by the V2X UE;
generate an authorization response including a mapping of a plurality of V2X application categories to the V2X RATs supported by the UE, wherein association of a V2X application with a V2X application category of the plurality of V2X application categories is based on a provider service identifier (PSID) associated with the V2X application;
provide, to the V2X UE, the authorization response;
generate reference signals for transmission to the V2X UE;
receive, in response to transmission of the reference signals to the V2X UE, a report for handover based on the reference signals from the V2X UE; and
generate, in response to a determination that handover to another radio access network (RAN) is appropriate, instructions in control signaling to the V2X UE, the instructions comprising instructions to change at least one V2X application category in the mapping to use a different RAN, wherein the instructions further comprise an indication that one or more other applications are unable to be used due to handover of the V2X UE.
12 . The non-transitory computer readable storage medium of claim 11 , wherein the V2X UE mapping table is limited to the list of RATs supported by the V2X UE.
13 . The non-transitory computer readable storage medium of claim 11 , wherein the program instructions are further executable to cause the network function to:
verify the request for V2X service authorization through communication with a home subscriber server (HSS) in a home network of the V2X UE.
14 . The non-transitory computer readable storage medium of claim 13 , wherein the authorization response is generated in response to a positive verification of the request for V2X service authorization.
15 . The non-transitory computer readable storage medium of claim 11 , wherein the mapping is an operator independent mapping table that maps the plurality of V2X application categories to different preferred RATs.
16 . The non-transitory computer readable storage medium of claim 11 , wherein the mapping is operator-independent within a predetermined area.
17 . The non-transitory computer readable storage medium of claim 16 , wherein the predetermined area is a geographic area agreed upon between operators.
18 . The non-transitory computer readable storage medium of claim 16 , wherein the geographic area is based at least in part on one or more of:
coverage of network equipment,
one or more tracking areas of a particular operator, or
a smallest coverage area of each network operator in the geographic area.
19 . The non-transitory computer readable storage medium of claim 11 , wherein the mapping is local and operator-independent to establish interoperability between V2X UEs.
20 . The non-transitory computer readable storage medium of claim 11 , wherein at least one of the one or more processors is a baseband processor.