METHOD FOR RELAYING DATA IN WIRELESS COMMUNICATION SYSTEM BASED ON TIME DIVISION DUPLEX

摘要

A method is provided for operating a relay station (RS) in a wireless communication system based on time division duplex (TDD) using a radio frame composed of a plurality of downlink subframes and at least one uplink subframe. A pair of subframes is determined to be used for communication between a base station (BS) and the RS. The pair of subframes comprises a configured downlink subframe and a configured uplink subframe. A signal is received from the BS in the configured downlink subframe which is configured by the RS as a multicast/broadcast single frequency network (MBSFN) subframe, and a signal is transmited to the BS in the configured uplink subframe.

主权项

1. A method for operating a relay station (RS) in a wireless communication system based on time division duplex (TDD) using a radio frame consisting of a plurality of downlink subframes and at least one uplink subframe, the method comprising:
determining a pair of subframes to be used for communication between a base station (BS) and the RS; wherein the pair of subframes comprises a configured downlink subframe and a configured uplink subframe; receiving a signal from the BS in the configured downlink subframe which is configured by the RS as a multicast/broadcast single frequency network (MBSFN) subframe; and transmitting a signal to the BS in the configured uplink subframe, wherein each radio frame consists of 10 subframes and the 10 subframes are indexed from 0 to 9, wherein the configured downlink subframe corresponds to a downlink subframe among downlink subframes configured to a user equipment (UE) and the configured uplink subframe corresponds to an uplink subframe which is configured to the UE to transmit an acknowledgement/not-acknowledgement (ACK/NACK) for the downlink subframe, wherein the downlink subframes configured to the UE and the uplink subframe which is configured to the UE to transmit the ACK/NACK for the downlink subframe are determined according to an uplink-downlink configuration as indicated in Table 1 below,TABLE 1Uplink-downlinkSubframe numberConfiguration0123456789047———92———177——822——3277—7222—27342———22334422——223333522—2222222678———23——4 wherein a subframe having ‘-’ under “Subframe number” in the Table 1 is an uplink subframe and a subframe having a number under “Subframe number” in the Table 1 is a downlink subframe, and each number indicates a number of an uplink subframe which is configured to transmit an ACK/NACK for a corresponding downlink subframe, and wherein when the “Uplink-downlink configuration” in Table 1 is 6, the configured downlink subframe comprises only a subframe 9 of the first radio frame, and the configured uplink subframe comprises only a subframe 4 of the second radio frame.