A method and device for configuring downlink resources

Abstract

This application discloses the downlink resource configuration method and device proposed by the present invention, which configures priority scheduling resources and sub-priority scheduling resources for each cell in advance, and makes the priority scheduling resources of each neighboring cell different, and avoids using neighboring cells during semi-static scheduling. The occupied semi-static scheduling resources fed back by the district, and the priority scheduling resources of the own cell (that is, the non-priority scheduling resources of the neighboring cells are preferentially used) for scheduling. The system resources not occupied by the zone are scheduled. The present invention can effectively reduce inter-cell downlink interference.

Description

Technical field [0001] The present invention relates to mobile communication technology, in particular to a method and device for configuring downlink resources. Background technique [0002] In the LTE trunking system, the downlink service of the trunking group call in a single cell generally uses a semi-static manner to periodically allocate physical resource block (PRB) resources and broadcast them to users. Among them, different cells independently allocate and broadcast the aforementioned PRB resources. Because the downlink resource configuration is performed in a broadcast mode, it is impossible to use retransmission technologies such as Hybrid Automatic Repeat Request (HARQ) to ensure communication quality. In order to enhance the anti-interference performance of the group call service, the general group call service only A very low modulation and coding scheme (MCS) can be used, such as MCS0, which will occupy a large amount of downlink RB resources. When the group call ...

AI Technical Summary

Problems solved by technology

[0005] When the all-edge mode is used for inter-cell interference coordination, when the instantaneous downlink load of a certain cell exceeds the edge frequency band capacity of a single cell (for example, a large number of downlink dynamic scheduling services occur), the resources of the central frequency band will be occupied to meet the requirements of the network. The communication needs of the cell, and the central frequency band resources of the cell will be the edge frequency band resources of its neighboring cells, which will cause interference to the downlink group call service of the neighboring cell, and cannot guarantee the quality of the downlink group call service of the neighboring cell

[0006] It can be seen that when the full-edge mode is used for downlink interference coordination, it can only avoid the mutual interference between the group call downlinks of each cell when the cell load is light, and cannot avoid the impact of the dynamically scheduled downlink service on the semi-statically scheduled group call. downlink interference

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