Patent ID: 7088688
Filing Date: 2006-08-08
Classification: H04B,H04W

Abstract:
1. An apparatus for randomly assigning downlink sub-frame time slots transmitting user data in an TDD (Time Division Duplexing) communication system which includes a plurality of frames having different frame numbers, each of the frames including a plurality of sub-frames having different sub-frame numbers, each of the sub-frames including a plurality of time slots, said apparatus assigns user data of a plurality of user equipments (UEs) to the time slots in each sub-frame, the apparatus comprising: a multiplexer for creating a user data part by multiplexing user data for a UE, a TFCI (Transport Format Combination Indicator) symbol for the user data, and a TPC (Transmission Power Control command) symbol for controlling transmission power of a downlink channel; and a controller for randomly assigning time slots for transmitting the user data part in the sub-frames, based on a time slot number initially assigned for the user data part, a sub-frame number at a transmission point of the user data part, and the number of assigned uplink time slots in the corresponding sub-frame.