Controlling Location Report from RAN
A system for providing granular location information for User Equipment (UE) in an Open Radio Access Network (O-RAN) that generates and transmits a Location Report without receiving a Location Reporting Control message. When UE moves either, between sectors or bands of a cell site or the UE is handed over to another cell site, a Location Update message is generated by the cell site responsible for the UE and is transmitted to a controlling Distributed Unit (DU) and onward to a controlling Central Unit (CU). The information is further transmitted to Core equipment that may include Mobility Management Entity/Access and Mobility Management Function (MME/AMF) and Lawful Interception Management System (LIMS) allowing for high granularity for location identification of UE in an O-RAN system.
1 . A system for reporting the location of User Equipment (UE) connected to a first Remote Radio Unit (RRU) in an Open Radio Access Network (O-RAN) to a central computer comprising:
first RRU software executing on the first RRU receiving UE identification information from the UE and generating a Location Report including at least the UE identification information and a first cell-id associated with the first RRU;
a first Central Unit (CU) server coupled to the first RRM receiving the Location Report;
the first CU server transmitting the Location Report to a Mobility Management Entity/Access and Mobility Management Entity (MME/AMF);
wherein when the UE moves to a physical location associated with a second cell-id, the first CU server receives a Location Update message including the UE identification information and the second cell-id; and
the first CU transmitting the Location Update message to the MME/AMF.
2 . The system according to claim 1 , wherein the Location Report comprises a Registration message that is generated when the UE initially connects to the O-RAN.
3 . The system according to claim 1 , wherein the first cell-id is associated with a first sector of the first RRU, and the second cell-id is associated with a second sector of the first RRU, and wherein the Location Update message is generated by the first RRU.
4 . The system according to claim 1 , wherein the first cell-id is associated with a first band of a first sector of the first RRU, and the second cell-id is associated with a second band of the first sector of the first RRU.
5 . The system according to claim 1 , wherein the first cell-id is associated with a first sector of the first RRU, and the second cell-id is associated with a first sector of a second RRU, wherein the Location Update message is generated by the second RRU.
6 . The system according to claim 5 , wherein the first RRU and the second RRU are both connected to a first Distributed Unit (DU) server, which is in turn, is connected to the first CU server.
7 . The system according to claim 5 , wherein the first RRU is connected to a first Distributed Unit (DU) server and the second RRU is connected to a second DU server.
8 . The system according to claim 7 , wherein both the first and second DU servers are connected to the first CU server.
9 . The system according to claim 7 , wherein the first DU server is connected to the first CU server, and the second DU server is connected to a second CU server, and wherein the second CU server is connected to the MME/AMF.
10 . The system according to claim 1 , wherein
the software executing on the first RRU transmits the Location Report to a first Distributed Unit (DU) server coupled to the first RRU; and
the first DU server transmits the Location Report to the first CU server.
11 . The system according to claim 1 , wherein the MME/AMF is connected to a Lawful Interception Management System (LIMS) and the MME/AMF generates a Location Update Intercept Related Information (IRI) message based on the Location Report or the Location Update message, and wherein the IRI message is transmitted to the LIMS.
12 . The system according to claim 11 , wherein the IRI message comprises additional information than the information contained in the Location Report and the Location Update message.
13 . The system according to claim 1 , wherein the Location Report further includes data relating to MME/AMF data requirements including, level of Quality of Service (QOS), network slice, and combinations thereof.
14 . The system according to claim 1 , wherein the Location Report and the Location Update message are generated independent from a Location Reporting Control message.
15 . The system according to claim 1 , wherein the Location Update message comprises a first Location Update message, and wherein when the UE moves to a physical location associated with a third cell-id, a second CU server receives a second Location Update message including the UE identification information and the third cell-id;
the second CU transmits the second Location Update message to the MME/AMF; and
the MME/AMF generates a Location Update Intercept Related Information (IRI) message based on the second Location Update message and transmits the IRI message to a Lawful Interception Management System (LIMS).