COMMUNICATION METHODS AND DEVICES IN TIME DIVISION DUPLEX SYSTEM

摘要

Embodiments of the present invention relate to a communication method and a device in a time division duplexing system. The communication method in a time division duplexing system includes: notifying a user equipment of an uplink-downlink configuration of a radio frame; specifying a part of downlink subframes corresponding to the uplink-downlink configuration of the radio frame as MBSFN subframes; and sending first information to the user equipment, where the first information is used to indicate that multicast areas of the MBSFN subframes are used for uplink communication or downlink communication. In the embodiments of the present invention, the first information is used to indicate that the multicast areas of the MBSFN subframes are used for uplink communication or downlink communication, so that the uplink-downlink resource ratio matches transient uplink and downlink service volumes and resources are utilized effectively. Meanwhile, backward compatibility is achieved when downlink subframes are configured as MBSFN subframes, ensuring that old release and new release UEs using different HARQ time sequences can work normally at the same time in a TDD system.