Allocation method and device of dynamic subframes in time division duplexing system

Abstract

The invention discloses an allocation method of dynamic subframes in a time division duplexing (TDD) system. The method comprises the following steps of: for the subframes which are different in allocation in uplink and downlink subframe allocation in a current cell and uplink and downlink subframe allocation in an adjacent cell, silencing partial resources on the subframes of the current cell, and silencing the resources, corresponding to the unsilenced resources on the subframe of the current cell, on the subframe of the adjacent cell; or silencing partial resources on the subframes of the adjacent cell, and silencing the resources, corresponding to the unsilenced resources on the subframe of the adjacent cell, on the subframe of the current cell. The invention also discloses an allocation device of the dynamic subframe in the TDD system. According to the method and device disclosed by the invention, the problem of inter-cell interference generated in the process of switching the subframe in the TDD system can be solved, the normal uplink and downlink measurement can be guaranteed, the ACK / NACK (acknowledgement / negative acknowledgement) feedback and HARQ (hybrid automatic repeat request) process are not influenced and the utilization rate of frequency spectrum is also improved.

Description

technical field [0001] The present invention relates to the time division duplex (TDD, Time Division Duplex) system of Long Term Evolution (LTE, Long Term Evolution) and Advanced Long Term Evolution (LTE-A, Long Term Evolution Advanced) in the third generation partnership project (3GPP), especially relates to A method and device for configuring dynamic subframes in a TDD system. Background technique [0002] Duplex technology is an important part of the mobile communication system, and it is also a symbolic technology of the mobile communication system. On the basis of meeting the transmission needs, it realizes the isolation of uplink and downlink resources at the same time, ensures the normal transmission, and effectively reduces mutual interference. interference. The duplex technology used in the mobile communication system mainly includes Frequency Division Duplex (FDD, Frequency Division Duplex) and TDD. Among them, FDD operation requires two independent frequency ban...

AI Technical Summary

Problems solved by technology

For the first example, using the existing method, the current cell needs to set its own uplink subframe 4 and uplink subframe 9 as blank subframes to reduce the interference between itself and adjacent cells, but in this way, the uplink subframe 4 , Uplink subframe 9 cannot transmit sounding reference symbol (SRS, Sounding Reference Signal), physical uplink control channel (PUCCH, Physical Uplink Control Channel), physical uplink shared channel (PUSCH, Physical Uplink Shared Channel), resulting in the base station side can not measure , affecting the uplink ACK / NACK feedback, the downlink HARQ process, and causing serious waste of uplink resources, etc.; in the second example above, using the existing method, the current cell needs to set its own downlink subframe 4 and downlink subframe 9 It is a blank subframe to reduce interference between itself and adjacent cells, but in this way, downlink subframe 4 and downlink subframe 9 cannot transmit cell reference symbols (CRS, Cell-specific reference signals), physical downlink control channel (PDCCH , Physical downlink control channel), physical HARQ indicator channel (PHICH, Physical hybrid-ARQ indicator channel), physical downlink shared channel (PDSCH, Physical downlink shared channel), resulting in measurement failure on the terminal side, affecting downlink ACK / NACK feedback, uplink HARQ process, and lead to a serious waste of downlink resources

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