Support of fixed cells for user equipment access to a non-terrestrial network
Disclosed are techniques for wireless communication using satellite access to a wireless network, where a wireless cell supported by a satellite is moving or temporarily fixed. In an aspect, a radio access network (RAN) entity or a user equipment (UE) provides, to a core network entity, an enhanced cell global identifier (CGI), where the enhanced CGI includes at least one field representing a location of the UE. Based on the enhanced CGI, the core network entity determines a location of the UE, and may provide a service to the UE based on the location. A core network may also provide an enhanced CGI to a RAN, e.g., to support wireless emergency alerting to UEs.
1. A method of wireless communication performed by a radio access network (RAN) entity, comprising:
determining to send a location of a user equipment (UE) to a network entity; and
reporting, to the network entity, an enhanced cell global identifier (CGI) to enable the network entity to determine the location of the UE based on the enhanced CGI, the enhanced CGI including a plurality of fields, the plurality of fields including a mobile country code (MCC), a mobile network code (MNC), and a beam coordinates field, wherein the beam coordinates field indicates a geographic coverage area of a radio beam providing cellular connectivity to the UE, wherein the beam coordinates field includes coordinates of a center of the radio beam or the coordinates of the center of the radio beam and a radius of the radio beam, and wherein the RAN entity comprises a gateway between a non-terrestrial vehicle providing cellular connectivity to the UE and the network entity.
2. The method of claim 1 , wherein:
the beam coordinates field replaces a cell identity field in the enhanced CGI, or
the beam coordinates field is mapped to the cell identity field in the enhanced CGI.
3. The method of claim 1 , wherein the determining comprises:
receiving, from the network entity, a request for the location of the UE.
4. The method of claim 3 , further comprising:
receiving an emergency call made by the UE, wherein the request for the location of the UE is associated with the emergency call made by the UE.
5. A method of wireless communication performed by a radio access network (RAN) entity, comprising:
determining to send a location of a user equipment (UE) to a network entity; and
reporting, to the network entity, an enhanced cell global identifier (CGI) to enable the network entity to determine the location of the UE based on the enhanced CGI, the enhanced CGI including a plurality of fields, the plurality of fields including a mobile country code (MCC), a mobile network code (MNC), and a UE location coordinates field, wherein the UE location coordinates field indicates a geographic location of the UE in latitude and longitude coordinates, and wherein the RAN entity comprises a gateway between a non-terrestrial vehicle providing cellular connectivity to the UE and the network entity.
6. The method of claim 5 , wherein the UE location coordinates field includes an uncertainty value associated with the geographic location of the UE.
7. The method of claim 5 , wherein:
the UE location coordinates field replaces a cell identity field in the enhanced CGI, or
the UE location coordinates field is mapped to the cell identity field in the enhanced CGI.
8. A radio access network (RAN) entity, comprising:
a memory;
at least one network interface; and
at least one processor communicatively coupled to the memory and the at least one network interface, the at least one processor configured to:
determine to send a location of a user equipment (UE) to a network entity; and
report, to the network entity, an enhanced cell global identifier (CGI) to enable the network entity to determine the location of the UE based on the enhanced CGI, the enhanced CGI including a plurality of fields, the plurality of fields including a mobile country code (MCC), a mobile network code (MNC), and a beam coordinates field, wherein the beam coordinates field indicates a geographic coverage area of a radio beam providing cellular connectivity to the UE, wherein the beam coordinates field includes coordinates of a center of the radio beam or the coordinates of the center of the radio beam and a radius of the radio beam, and wherein the RAN entity comprises a gateway between a non-terrestrial vehicle providing cellular connectivity to the UE and the network entity.
9. A radio access network (RAN) entity, comprising:
a memory;
at least one network interface; and
at least one processor communicatively coupled to the memory and the at least one network interface, the at least one processor configured to:
determine to send a location of a user equipment (UE) to a network entity; and
report, via the at least one network interface, to the network entity, an enhanced cell global identifier (CGI) to enable the network entity to determine the location of the UE based on the enhanced CGI, the enhanced CGI including a plurality of fields, the plurality of fields including a mobile country code (MCC), a mobile network code (MNC), and a UE location coordinates field, wherein the UE location coordinates field indicates a geographic location of the UE in latitude and longitude coordinates, and wherein the RAN entity comprises a gateway between a non-terrestrial vehicle providing cellular connectivity to the UE and the network entity.