Communication method of time-division duplex system and device

Abstract

The inventive embodiment relates to a communication method of a time-division duplex (TDD) system and a device. The communication method of the time-division duplex system comprises: informing user equipment of the ratio of uplink sub-frames to downlink sub-frames of wireless frame, indicating a portion of downlink sub-frames corresponding to the ratio of uplink sub-frames to downlink sub-frames of the wireless frame to MBSFN (multicast-broadcast single frequency network) sub-frames; and transmitting first information to the user equipment, wherein the first information is used for indicating that the multicast region of the MBSFN sub-frames is used for uplink communication or downlink communication. According to the embodiment of the invention, the ratio of the uplink and downlink resources can be matched with the instant uplink and downlink business amount by using the first information to indicate that the multicast region of the MBSFN sub-frame is used for uplink communication or downlink communication, thereby effectively utilizing resources. Meanwhile, backward compatibility can be realized by configuring the downlink sub-frames to the MBSFN sub-frames, so as to ensure that user equipments of the new and old versions using different HARQ (hybrid automatic repeat request) time sequences in the TDD system network can work normally at the same time.

Description

technical field [0001] Embodiments of the present invention relate to the field of wireless communication, and more specifically, relate to a communication method and device for a time division duplex system. Background technique [0002] The Long Term Evolution (LTE for short) system supports Time Division Duplexing (TDD for short), that is, the Uplink (UL for short) and the Downlink (Downlink for short). "DL") uses different time slots of the same frequency, where the uplink is used for uplink communication, that is, if the user equipment has data to send to the base station, the user will send it through the uplink; the downlink is used for downlink communication, that is, if the base station When there is data to send to the user, the base station will send it on the downlink. The LTE TDD system can semi-statically configure the uplink-downlink configuration (Uplink-Downlink Configuration) according to the service type to meet different uplink-downlink asymmetric servic...

AI Technical Summary

Problems solved by technology

However, since the uplink and downlink ratios to be used are semi-statically configured and cannot be changed dynamically, this will cause the current uplink and downlink ratios to not match the instantaneous uplink and downlink traffic, thus making it impossible to effectively utilize resources, especially for a small number of users districts are particularly serious

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