US 12,144,029 B2
Method and system of leased radio unit (RU) and spectrum architecture for reducing latency in access to operator resources
Mehdi Alasti, Reston, VA (US); and Siddhartha Chenumolu, Ashburn, VA (US)
Assigned to DISH Wireless L.L.C., Englewood, CO (US)
Filed by DISH Wireless L.L.C., Englewood, CO (US)
Filed on Jan. 31, 2022, as Appl. No. 17/649,389.
Claims priority of provisional application 63/265,868, filed on Dec. 22, 2021.
Prior Publication US 2023/0199854 A1, Jun. 22, 2023
Int. Cl. H04W 74/0833 (2024.01); H04L 5/00 (2006.01); H04W 48/10 (2009.01); H04W 84/04 (2009.01)
CPC H04W 74/0833 (2013.01) [H04L 5/0092 (2013.01); H04W 48/10 (2013.01); H04W 84/042 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of performing a Random Access Channel (RACH) procedure, comprising:
mapping, by a host operator, each of a plurality of Bandwidths Parts (BWPs) available from each of a plurality of distributed units (DUs) operated by the host operator to one of a plurality of public land mobile network identifications (PLMN-IDs), wherein each of the plurality of PLMN-IDs is associated with at least one operator of a set of different operators;
associating, by the host operator, each of the PLMN-IDs with a different physical random access channel (PRACH) occasion, wherein each PRACH occasion is available from at least one of the DUs for uplink (UL) transmission from user equipment (UE) associated with the PLMN-ID of the PRACH;
identifying, by each of the DUs of the host operator, each PRACH occasion available from the DU based on each PLMN-ID of the set of PLMN-IDs; and
enabling, by the DU of the host operator, a User Equipment (UE) to access a New Radio (NR) cell site using the PRACH occasion associated with the PLMN-ID that is associated with the UE, and to thereafter communicate with the NR cell cite via the BWPs that are allocated to the operator associated with the PLMN-ID of the PRACH.