Sounding reference signal for coordinated multi-point operation

摘要

Systems and methodologies are described that facilitate configuring a sounding reference signal transmission in a wireless communication environment. A UE can employ coordinated multi-point transmission and/or reception such that multiple cells collaborate to transmit data to the UE and/or receive data from the UE. To support the coordinated multi-point transmission and/or reception, the UE can transmit a sounding reference signal that is configured to enable reliable reception of the sounding reference signal by members of a cooperating set. In addition, configuration of the sounding reference signal can be coordinated to enable more efficient transmission and utilization of the sounding reference signal. Configuration of the sounding reference signal can be based upon information exchanged between the multiple cells. Moreover, the multiple cells can coordinate to set and control a transmit power of the sounding reference signal.

主权项

1. A method, comprising:
receiving, at a mobile device, first configuration information from a first node in a coordinated multi-point (CoMP) set, wherein the CoMP set includes a plurality of nodes that collaborate to provide coordinated reception or transmission of data between the plurality of nodes and the mobile device, and wherein the first configuration information comprises a CoMP offset that boosts a transmit power for a sounding reference signal (SRS) when the SRS is transmitted for reception by the plurality of nodes in the CoMP set relative to a transmit power of the SRS when the SRS is transmitted in a single-node configuration; determining, by the mobile device, the transmit power for the SRS based at least in part on a physical uplink shared channel transmit power and the CoMP offset; and transmitting the SRS to at least one node in the plurality of nodes.