Method and apparatus for transmitting and receiving MBMS data

摘要

The invention provides a method and device for sending MBMS traffic data based on MBMS Cell Group, the method comprises the following steps: channel coding and modulating said MBMS traffic data; determining said MBMS cell group-specific scrambling code; determining said MBMS cell-specific scrambling code; scrambling said MBMS traffic data with said MBMS cell group-specific scrambling code, and adding reference signal scrambled with said MBMS cell group-specific scrambling code and reference signal scrambled with said MBMS cell-specific scrambling code; and sending scrambled MBMS reference signal and data. With the method and the corresponding device provided by the invention, it is easy to realize RF combining or RF combining and soft combining simultaneously at UE to obtain diversity gain.

主权项

1. A method for sending MBMS traffic data, comprising:
channel coding and modulating MBMS traffic data for transmission from a sending device in a wireless network having a network coverage area formed by a plurality of cells, wherein the network coverage area includes a plurality of MBMS cell groups, each MBMS cell group having a corresponding group coverage area and formed by dividing at least a portion of the plurality of cells into groups based on radio propagation time delay over the corresponding group coverage area; determining an MBMS cell group-specific scrambling code for a specific MBMS cell group; determining an MBMS cell-specific scrambling code for a specific cell of the specific MBMS cell group; with respect to the channel coded and modulated MBMS traffic data, scrambling said MBMS traffic data with said MBMS cell group-specific scrambling code, scrambling a first reference signal with said MBMS cell group-specific scrambling code, scrambling a second reference signal with said MBMS cell-specific scrambling code, and adding the scrambled MBMS traffic data and the first and second scrambled reference signals to form a scrambled MBMS reference signal and data; and sending the scrambled MBMS reference signal and data; wherein diameters for group coverage areas are equal to or slightly less than a distance with radio propagation in a long CP window according to radio propagation time delay for the corresponding MBMS cell group.