MULTIPLE-ANTENNA SYSTEM FOR CELLULAR COMMUNICATION AND BROADCASTING

摘要

A reception method and apparatus for use in a multi-cell orthogonal frequency division multiple access (OFDMA) wireless system. In a unicast receive mode during a first receive time period, a first group of orthogonal frequency division multiplexing (OFDM) symbols is received by a mobile device from multiple of a plurality of antennas at a serving base station. In a single-frequency-network (SFN) receive mode during a second receive time period, a second group of OFDM symbols is received by the mobile device from one of a plurality of antennas at the serving base station. The transition between the first receive time period and the second receive time period occurs during a cyclic prefix or a cyclic postfix between OFDM symbols, and the plurality of antennas produce a first beam pattern during the unicast receive mode and a second beam pattern during the SFN receive mode.

主权项

1. A method for a mobile device within a cell of a plurality of cells, each cell having a serving base station with a plurality of antennas, the method comprising:
performing frame and symbol synchronization with the serving base station; transmitting uplink signals to the serving base station; receiving a first signal containing a first group of orthogonal frequency division multiplexing (OFDM) symbols from multiple of the plurality of antennas at the serving base station during a first receive time period, the first signal transmitted by the serving base station in a first transmission mode with a first beam pattern for unicast transmission within the cell; and receiving a second signal containing a second group of OFDM symbols from one of the plurality of antennas at the serving base station during a second receive time period, the second signal transmitted by the serving base station in a second transmission mode with a second beam pattern for single frequency network (SFN) broadcast transmission to the cell and other cells; wherein a transition between the first receive time period and the second receive time period occurs during a cyclic prefix or a cyclic postfix between OFDM symbols, and wherein the first beam pattern is different than the second beam pattern in either an azimuth pattern or an elevation pattern.