Notification method and apparatus for uplink and downlink time slot proportion information in time division duplex system

Abstract

The present invention discloses an uplink-downlink time slot proportion information notifying method of time division duplex system and a device thereof. The method and the device correlate the resource magnitude information of physical hybrid automatic request retransmission indicating channel PHICH in the main broadcasting information with the uplink-downlink time slot proportion information of time division duplex system. The uplink-downlink time slot proportion information of time division duplex system, which is correlated with the magnitude information of PHICH resource, is notified to the user facility through the main broadcasting information. The magnitude information of PHICH resource is correlated with the uplink-downlink time slot proportion of time division duplex system, thereby providing more elaborate PHICH resource magnitude division for the TDD system and avoiding the wastage of PHICH resource.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and a device for notifying information on the proportion of uplink and downlink time slots in a time division duplex system. Background technique [0002] At present, the third generation mobile communication system (3G) adopts code division multiple access (CDMA) multiple access mode, supports multimedia services, and will have higher competitiveness in the next few years. However, in order to ensure that this competitiveness can be maintained for a longer period of time, the 3rd Generation Mobile Communications System Partnership Project 3GPP has launched a research project on the Long Term Evolution (LTE) of 3G radio interface technology. , improve user data rate, improve system capacity and coverage, and reduce the cost of operators. [0003] According to the existing research progress, LTE supports two types of frame structures. The first type of frame stru...

AI Technical Summary

Problems solved by technology

But for the TDD system, the resource size required by PHICH is also related to the uplink and downlink time slot ratio of the TDD system. Therefore, in the TDD system, the PHICH resource size is divided into four levels for TDD systems with various uplink and downlink time slot ratios. It is not fine enough, which will cause a waste of PHICH resources in the TDD system

[0018] In addition, for the TDD system, due to the asymmetry of uplink and downlink time slots, for example, for image 3 In the case where the ratio of downlink to uplink time slots shown is 1:3, the control information in a downlink subframe includes not only the downlink scheduling information of this subframe, but also the scheduling grant information of all other uplink subframes and Power control information and other information of all users, so 3 OFDM symbols are probably not enough for PDCCH

Images