Patent ID: 11871402
Assignee: MAVENIR NETWORKS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A system comprising:
a Baseband Unit (BBU) comprising a Control Unit (CU) configured to transmit, via a fronthaul interface, a discovery reference signal (DRS) transmission to a Remote Radio Unit (RRU), wherein a Control Unit (CU) of the BBU is configured to:
send the DRS signal at a time DRSth,1 or a time DRSth,2;
send an LBT DRS request at a target subframe for Listen Before Talk (LBT) sensing; and
determine if a discovery measurement timing configuration (DMTC) offset time has passed; and, wherein the RRU is configured to:
determine if the DRS is received, and if so, buffer the DRS;
if the DRS is not received, continue to listen for the DRS;
if the DRS is buffered, determine if the RRU has received an LBT DRS request from the CU; and
if so, determine if the discovery measurement time window (DMTC) offset time has passed, and if so, terminate the process.