Patent ID: 8537785
Filing Date: 2013-09-17
Classification: H04B,H04W

Abstract:
1. A method for cell/sector coverage of a public channel through multiple antennas, comprising: dividing a physical resource for transmitting public channel signals in a frame into N physical resource blocks, wherein N is a positive integer greater than 1; generating N weighting vectors, wherein each weighting vector comprises M weighting coefficients, M is equal to the number of antennas, and the difference of average antenna gain for N weighting vectors in different directions of a whole cell/sector is less than a preset value; selecting one of the N weighting vectors for each of the N physical resource blocks respectively, wherein the N weighting vectors vary with different physical resource blocks; using the M weighting coefficients in each selected one of N weighting vectors to weight the public channel signals in M antennas respectively; and transmitting the weighted public channel signals through the M antennas; wherein generating the N weighting vectors further comprises: obtaining a base weighting vector comprising M weighting coefficients; obtaining N different phases for a current frame; and transforming the base weighting vector to obtain the N weighting vectors according to the N different phases, wherein the N weighting vectors are different from one another and each of the N weighting vectors comprises M weighting coefficients; wherein obtaining the base weighting vector comprises: selecting the base weighting vector to accomplish these effects: a coverage angle of a beam pattern of the base weighting vector reaches a preset threshold, and beam flatness on an angle dimension is higher than another preset threshold.