Transmit diversity for pre-coded radio control signals

摘要

Sequences of pre-coded radio control signals are rearranged to enhance diversity transmission. In one example, a sequence of uplink control bits is segmented to form a plurality of groups. The bits of each of the plurality of groups are error correction encoded and encoded into symbols. The symbols are mapped to different ports for diversity transmission through a plurality of ports.

主权项

1. A method implemented in a user equipment of a radio communications system to send uplink control information from the user equipment to a serving node of the radio communications system, the method comprising:
segmenting an uplink control bit sequence to form a plurality of groups of bits; encoding the groups of bits in respective error correcting encoders, one for each group of bits; encoding the bits of each of the plurality of groups into symbols; and mapping the symbols to different transmission ports for diversity transmission as uplink control information through a plurality of antenna ports of the user equipment, wherein encoding the bits comprises applying bits from a first group of bits to one axis of a phase-shift keyed encoder and applying bits from a second group of bits to another axis of a phase-shift keyed encoder.