US 12,015,669 B2
Dynamic open radio access network radio unit sharing between multiple tenant open radio access network distributed units
Indermeet Gandhi, San Jose, CA (US); Mark Grayson, Maidenhead (GB); and Shailender Potharaju, Fremont, CA (US)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Oct. 19, 2022, as Appl. No. 18/047,828.
Prior Publication US 2024/0137414 A1, Apr. 25, 2024
Int. Cl. H04L 67/1097 (2022.01); H04W 72/04 (2023.01)
CPC H04L 67/1097 (2013.01) [H04W 72/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a Near Real Time Radio Area Network Intelligent Controller (nRT-RIC), tenant policies for a first tenant and a second tenant;
determining, by the nRT-RIC, initial sharing templates for the first tenant and the second tenant based on the tenant policies, wherein determining the initial sharing templates for the first tenant and the second tenant based on the tenant policies comprises:
determining a first Physical Broadcast Channel (PBCH) and Primary Synchronization Signal (PSS) configuration for the first tenant and a first PRB allocation for the first tenant;
determining a second PBCH and PSS configuration for the second tenant and a second PRB allocation for the second tenant; and
determining a reserve PRB allocation;
sending, by the nRT-RIC, the initial sharing templates to a first tenant Distributed Unit (DU) and a second tenant DU;
receiving, by the nRT-RIC, operating metrics from the first tenant DU and the second tenant DU;
determining, by the nRT-RIC, operational factors based on the operating metrics, wherein determining the operating factors comprises determining Control Channel Element (CCE) utilizations for each of the first tenant and the second tenant;
altering, by the nRT-RIC, an allocation of resources between the first tenant and the second tenant based on the operational factors, wherein altering the allocation of resources between the first tenant and the second tenant comprises offloading a CCE for any of (i) the first tenant, (ii) the second tenant, or (iii) a combination of (i) and (ii) based on the CCE utilizations; and
sending, by the nRT-RIC, the altered allocation of resources to the first tenant DU and the second tenant DU.