Resource scheduling method and device and base station

Abstract

The invention discloses a resource scheduling method and device and a base station which are used for lowering the signaling overhead of downlink control channel instructions in uplink and downlink data transmission. The method comprises the following steps: when the judging result shows that the cell of a user terminal is an interference limited cell and a semi-persistent scheduling mechanism needs to be set for the user terminal, configuring semi-persistent scheduling parameters for the user terminal; when the determining result shows that the user terminal needs to adopt the semi-persistent scheduling mechanism to transmit the service data of the access service, allocating semi-persistent scheduling resources for transmitting the service data to the user terminal according to the semi-persistent scheduling parameters; and sending the resource scheduling information of the semi-persistent scheduling resources to the user terminal through the downlink control channel of the user terminal. By adopting the technical scheme of the invention, the signaling overhead of the downlink control channel instructions in data transmission is lowered, the inter-cell interference of the downlink control channel is reduced, and the receptivity of the downlink control channel and the QoS (Quality of Service) and cell spectrum efficiency of users are improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a resource scheduling method, device and base station. Background technique [0002] At present, in the LTE (Long Term Evolution, long-term evolution) system, in order to reduce the interference in the cell, the main way is to use OFDM (Orthogonal Frequency Division Multiplexing) technology to transmit data in the downlink control channel. Although this method reduces intra-cell interference, it increases ICI (Inter-Cell Interference, Inter-Cell Interference) interference, which is particularly significant compared with the traditional 3G system. In order to reduce inter-cell interference, the main method is to use frequency reuse to transmit data between cells, that is, different frequency bands are used for networking between adjacent cells, such as a network with a frequency reuse factor of 3, 4 or 7. ; This kind of networking method poses a great challenge to the LTE system...

AI Technical Summary

Problems solved by technology

With the continuous promotion of services and more and more data services, there will be a large number of data services in the LTE system that need to adopt a dynamic scheduling mechanism, which may result in downlink control channels (such as PDCCH channels) carrying uplink scheduling grants and downlink scheduling signaling. The load is relatively serious, so that when the same-frequency networking is carried out in the LTE system, the downlink control channel suffers from severe inter-cell same-frequency interference. Therefore, the existing scheduling mechanism still has a large control channel signaling overhead. As a result, the same-channel interference between cells on the downlink control channel is more serious.

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