Downlink resource configuration method and apparatus

Abstract

The application discloses a downlink resource configuration method and apparatus. The method includes: configuring priority scheduling resources and secondary priority scheduling resources for cells in advance to enable the priority scheduling resources of the adjacent cells to be different; during semi-static scheduling, performing scheduling by preferably employing the priority scheduling resources (namely preferably employing non-priority scheduling resources of the adjacent cells) of the cell instead of employing occupied semi-static scheduling resources fed back by the adjacent cells; andduring dynamic scheduling, performing scheduling by employing system resources which are not occupied by the cell and the adjacent cells in a current dynamic scheduling period. By employing the method and apparatus, the downlink interference between the cells can be effectively reduced.

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 by broadcast, 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 group call services, general group call services 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 group call users are at the ...

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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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