US Patent No. 9,277,465


Patent No. 9,277,465
Issue Date March 01, 2016
Title Contention-free Handoff Return In A Wireless Network
Inventorship Siddharth Oroskar, Overland Park, KS (US)
Xianghong Zeng, Overland Park, KS (US)
Maulik K. Shah, Overland Park, KS (US)
John W. Prock, Peculiar, MO (US)
Assignee Sprint Communications Company L.P., Overland Park, KS (US)

Claim of US Patent No. 9,277,465

1. A first enhanced Node B (eNB) for contention-free handoff return in a wireless network, the first eNB comprising:
a transceiver system configured to communicate with a User Equipment (UE); and
a processing system coupled to the transceiver system and configured to receive a signal strength information from the UE
via the transceiver system;

the processing system configured to obtain a pre-handoff CF preamble for handoff of the UE from the first eNB to a second
eNB and provide the pre-handoff CF preamble to the UE;

the processing system configured to generate a post-handoff CF preamble for the UE and a predetermined preamble expiration
time period, wherein the first eNB is configured to expire the post-handoff CF preamble after the predetermined preamble expiration
time period; and

the transceiver system configured to transfer the post-handoff CF preamble for delivery to the UE.