US 10,512,042 B2
Method for terminal to transmit uplink signal, and terminal
Qiang Li, Beijing (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen, Guangdong (CN)
Filed on Feb. 18, 2014, as Appl. No. 14/183,158.
Application 14/183,158 is a continuation of application No. PCT/CN2012/079237, filed on Jul. 27, 2012.
Claims priority of application No. 2011 1 0235910 (CN), filed on Aug. 17, 2011.
Prior Publication US 2014/0162718 A1, Jun. 12, 2014
Int. Cl. H04W 52/14 (2009.01); H04W 52/32 (2009.01); H04W 52/40 (2009.01); H04W 52/24 (2009.01); H04W 52/28 (2009.01)
CPC H04W 52/146 (2013.01) [H04W 52/325 (2013.01); H04W 52/40 (2013.01); H04W 52/242 (2013.01); H04W 52/245 (2013.01); H04W 52/28 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for a terminal to transmit an uplink signal to a serving base station and at least another base station, the method comprising:
receiving an instruction sent from the serving base station (BS) for the terminal to determine a transmit power of a sounding reference signal (SRS) for sending to the serving base station and the at least another base station, wherein the instruction includes information for either jointly transmitting the SRS to more than one of the at least two base stations, or independently transmitting the SRS to each of the at least two base stations;
selecting an uplink power control formula from a plurality of uplink power control formulas at the terminal according to whether the SRS is to be transmitted jointly or independently;
receiving respective target power values from the serving base station and the at least another base station or receiving a target power value from the serving base station that is a value negotiated between the serving base station and the at least another base station;
obtaining the transmit power suitable for jointly transmitting the SRS by:
a) using the selected uplink power control formula and the respective target power values; or
b) using the selected uplink power control formula and the target power value from the serving base station; and
jointly or individually transmitting the SRS to the serving base station and the at least another base station based on the received instruction.