Patent ID: 9374749
Filing Date: 2016-06-21
CPC Classification: H04L,H04W

Claim Text:
1. A method for switching from a first primary radio frequency (RF) carrier to a second RF carrier in a wireless communication system, comprising: transmitting a first message to a mobile station (MS) using the first primary RF carrier, the first message indicating a handoff to the second RF carrier and including a second portion of necessary information for handoff from the first primary RF carrier to the second RF carrier, where the necessary information includes a first portion that has already been transmitted and the second portion that has not yet been transmitted; receiving a first acknowledgement message, sent from the MS using the first primary RF carrier, to acknowledge successful reception of the first message at the MS; transmitting a second message to the MS using the first primary RF carrier, wherein the second message allocates resources to the MS in the second RF carrier and allocates resources in an uplink fast feedback channel, the first primary RF carrier and the second RF carrier being carriers of a same base station (BS); maintaining resource allocations in the first primary RF carrier after transmitting the second message; receiving a second acknowledgement message, sent from the MS via the uplink fast feedback channel, to acknowledge successful synchronization to the second RF carrier; and releasing the maintained resource allocations in the first primary RF carrier in response to receiving the second acknowledgement message via the uplink fast feedback channel.