HANDOVER MECHANISM THAT EXPLOITS UPLINK CHANNEL QUALITY OF A TARGET CELL

摘要

System(s) and method(s) are provided for handover of a mobile terminal in a wireless communication system. Handoff resolution relies on both a downlink channel quality indication between a serving base station and the mobile terminal, and uplink channel quality indications amongst the terminal and a measurement set of target base stations. To generate UL channel quality indicators, the mobile station conveys a narrowband or broadband sounding reference signal, and serving and target base stations measure UL and DL performance metrics (e.g., RSRP, RSSI, or RSOT). In backward handover, UL channel state information from target cells is received at the serving base station through backhaul communication, and handoff is resolved based on both UL and DL quality reports. In forward handover, the set of UL quality reports are conveyed to the mobile station to determine a target cell for handoff.

主权项

1. A method for facilitating handover in a wireless system, the method comprising:
receiving one or more uplink (UL) channel quality metrics at a device; adapting a handover fitness score associated with a source of the one or more UL channel quality metrics based at least in part on the one or more UL channel quality metrics, wherein the handover fitness score is a function of a differential channel quality amongst a target base station and a serving base station; and handing off, at the device, based at least in part on the one or more UL channel quality metrics and the handover fitness score.