US 9,814,039 B2
Method and apparatus for configuring SRS resource for cooperating cells
Na Liu, Shenzhen (CN)
Assigned to XI'AN ZHONGXING NEW SOFTWARE CO., LTD., Xi'An (CN)
Appl. No. 14/649,767
Filed by ZTE CORPORATION, Shenzhen, Guangdong Province (CN)
PCT Filed Oct. 12, 2013, PCT No. PCT/CN2013/085126
§ 371(c)(1), (2) Date Jun. 4, 2015,
PCT Pub. No. WO2014/086203, PCT Pub. Date Jun. 12, 2014.
Claims priority of application No. 2012 1 0521505 (CN), filed on Dec. 7, 2012.
Prior Publication US 2015/0305027 A1, Oct. 22, 2015
Int. Cl. H04L 5/00 (2006.01); H04W 72/04 (2009.01)
CPC H04W 72/0446 (2013.01) [H04L 5/0048 (2013.01); H04L 5/0073 (2013.01); H04L 5/008 (2013.01); H04L 5/0035 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for configuring sounding reference signal (SRS) resources of cooperating cells, comprising:
grouping all cells into different cell groups;
determining a SRS initial time domain resource configuration order of each cell group;
determining a SRS resource grouping policy of the cell according to state information of user equipment; and
configuring SRS resources for user equipments accessing each cell according to the SRS initial time domain resource configuration order and the SRS resource grouping policy;
wherein, determining the SRS resource grouping policy of the cell according to the state information of a user equipment (UE) comprises:
dividing each SRS time domain resource into S groups, wherein S=2M, and M is a ratio of a cell SRS bandwidth to a UE SRS bandwidth; a total code tree set corresponding to different frequency division resources and comb division resources being marked as Φ, wherein, Φ={kεZ, 0≤k≤S−1, Z is an integer}; and
when there are x kinds of state information of the UE, each kind of state information of the UE corresponding to one code tree subset GroupAi, wherein, GroupAi={k|mod (k, x)=i}, iε(0, 1, . . . , x−1), GroupAi={k/mod (k, x)=i} represents a set of remainder i obtained from k divided by x.