Patent Number: 7,088,688

Title: Apparatus and method for randomly controlling time slot of sub-frame in an NB-TDD CDMA system

Abstract: An apparatus randomly assigns downlink sub-frame time slots for transmitting user data in an NB-TDD CDMA (Code Division Multiple Access) communication system. In the apparatus, a multiplexer creates a user data part by multiplexing user data for UEs (User Equipments), 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 randomly assigns 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.

Inventors: Kim; Seong-Hun (Seoul, KR), Kwak; Byung-Jae (Songnam-shi, KR), Choi; Ho-Kyu (Kyonggi-do, KR), Choi; Sung-Ho (Songnam, JP), Hwang; Sung-Oh (Yongin-shi, KR), Lee; Hyun-Woo (Suwon-shi, KR), Lee; Kook-Heui (Songnam-shi, KR)

Assignee: Samsung Electronics Co., Ltd.

International Classification: H04J 3/00 (20060101)

Expiration Date: 8/08/02018