Patent ID: 7885604

Claim:
A system comprising: a base station control device (BCD) configured to generate one or more parameters for operating one or more base stations (BSs); a first BS configured to cover a first cell having one or more mobile terminals therein, wherein the first BS is configured to communicate with the BCD; a second BS configured to cover a second cell neighboring the first cell having one or more mobile terminals therein and sharing a predetermined frequency band with the first cell, wherein the second BS is configured to communicate with the BCD; wherein the BCD generates and transmits to the first BS and second BS parameters that the first BS and second BS use to construct downlink radio frames for communications with any mobile terminal in their respective first and second cells, wherein the BCD generates the parameters for the first BS and second BS such that downlink radio frames used for communication in the first and second cells are distinguishable from each other according to different channel configuration sets, each channel configuration set comprising one or more training sequences having a pseudo random complex value sequence, spreading codes used to spread traffic messages and control messages, and channel observation window positions in downlink radio frames communicated in the first and second cells, respectively; wherein the BCD generates the channel configuration sets such that the downlink radio frames that the second BS transmits in the second cell are offset in time from the downlink radio frames that the first BS transmits in the first cell with respect to global position signal information in order to isolate the downlink radio frames that the second BS transmits in the second cell from the downlink radio frames that the first BS transmits in the first cell; wherein a mobile terminal in the first cell or second cell generates random access packets and traffic data packets in accordance with the spreading code and training sequence depending from which of the first and second BSs a downlink radio frame is received; and wherein the first BS and the second BS, upon receiving commands from the BCD, which commands comprise the channel configuration set assigned to the first BS and the channel configuration set assigned to the second BS, respectively, configures downlink radio frames accordingly.