Patent ID: 7706335

Claim:
A cellular communication method, the method comprising: identifying a distressed terminal of a plurality of terminals in a cellular network, wherein the distressed terminal is identified as receiving downlink transmission signals having an signal to interference and noise ratio (SINR) less than a threshold; and coordinating downlink transmission to the plurality of terminals based on at least the identified distressed terminal, wherein the network comprises cells, and each cell comprises sectors; wherein coordinating the downlink transmission comprises multiple base stations transmitting a same signal to the identified distressed terminal; and the distressed terminal receiving a copy of the same signal from each of the multiple base stations, comprising selecting pseudo-random bit sequences (PRBS), and aligning the PRBS of the multiple sectors and multiple cells, wherein the aligning comprises assigning a time-frequency slot for the identified distressed terminal; wherein the plurality of terminals comprises distressed terminals with a low SINR relative to sacrificial terminals, and sacrificial terminals with a high SINR relative to distressed terminals, the method further comprising: a sector transmitting data to a terminal in an allocated slot; and pairing a distressed terminal with one or more sacrificial terminals such that transmit power for the distressed terminal is increased while transmit power for the sacrificial terminal is decreased; designating a distressed terminal in a serving sector and a distressed terminal in an interfering sector as being in the plurality of terminals; and using beams to reduce interference between the distressed terminal in the serving sector and the distressed terminal in the interfering sector.