Patent ID: 9407339
Filing Date: 2016-08-02
CPC Classification: G06Q,H04B

Claim Text:
1. A monotonic optimization method for achieving a maximum weighted sum-rate in a multicell downlink MISO system, wherein the multicell downlink MISO system comprises: cell/base stations, cells, antennas and base stations; the method utilizes a sensible search scheme, a sequential partition method and a vertex relocation method, specifically comprising steps of: Step 1: setting system parameters by the base stations, wherein the system parameters comprises: a cell/base station number M, a user station number in an m-th cell K Step 2: defining R wherein W formulating an achievable rate vector  as well as a weighted sum-rate function  wherein ∈ Step 3: defining boxes [a,b]={x∈ Step 4: initializing an upper bound f wherein α is a weight vector comprising weights for all user stations, Step 5: choosing one of the boxes [a,b] from N that satisfies f(b)=f Step 6: if the problem φ(a) is feasible, conducting the sensible search scheme for the one of the boxes [a,b] to obtain a partition point r ; wherein if the problem φ(a) is infeasible, updating the box set as N=N[a,b] and calculating the upper bound f Step 7: based on the partition point r, dividing the the one of the boxes [a,b] into K new boxes [a Step 8; calculating f(b) for each of the boxes [a,b]; wherein if f(b)>f wherein ã if f(b)≦f Step 9: resetting the upper bound f Step 10: checking a relative error of the upper and lower bounds by the base stations; wherein if (f Step 11: downlink-communicating with the user stations by the base stations at the defined rates within the upper bound f