Apparatus, method, and system for uplink control channel reception in a heterogeneous wireless communication network

摘要

A method and system for improving the reception of uplink transmissions in a heterogeneous wireless communication system includes a high-power node such as a macro-cell and a low-power node such as a femto-cell or pico-cell. To address an uplink imbalance where a nearby low-power node power controls a UE such that uplink transmissions of an HSDPA control channel are poorly received at the serving cell, an RNC can instruct the UE to boost its uplink transmit power, remove the UE from soft handover, or disable power control of the UE by the low-power node. To address inter-cell interference, the RNC can limit the UE transmit power and/or enable the victim cell to suppress the interference. Further, a common control channel can be used to power control UEs outside of the convention set of UEs available for power control.

主权项

1. A method of wireless communication operable at a user equipment, the method comprising:
receiving a system information block comprising a channelization code for decoding a common control channel from a non-serving cell not included in an active set of the user equipment; receiving a relative grant on the common control channel, in response to a determination that a difference between a first path loss corresponding to a transmission received from a serving cell and a second path loss corresponding to a transmission received from the non-serving cell is less than a threshold; and adjusting an uplink transmit power in accordance with the relative grant received on the common control channel.