Anti-interference method and device

Abstract

The invention discloses an anti-interference method and an anti-interference device. The method comprises the steps of detecting and receiving a data packet sent from a sending node on at least one carrier wave by a receiving node; demodulating and processing the data packet by the receiving node and outputting the soft information; merging the soft information of the data packet on the carrier wave by the receiving node, demodulating and processing the merged and processed soft information, and identifying whether a decoded result is correct or not; if the data packet is retransmitted on thecorresponding carrier wave, merging and processing the soft information on the carrier wave where the data packet is arranged; converging each decoded result on the carrier wave corresponding to the data packet by the receiving node; if at least one decoded result is correct, determining that the data packet is successfully received, and feeding back the ACK information to the sending node. The implementation complexity of a base station is simplified. Meanwhile, the requirements of various terminals on the anti-interference capability are well met. The method and the device are suitable for scenes wherein interference factors are continuously changed.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of communications, and in particular, to an anti-interference method and device. Background technique [0002] Due to the limitation of spectrum resources, general mobile communication systems adopt same-frequency networking to improve spectrum utilization. However, this also causes the user signals of adjacent cells of the same frequency to interfere with the user signals of this cell, resulting in a decrease in communication quality. Therefore, anti-jamming capability is an important requirement for mobile communication systems. The long term evolution (Long Term Evolution, LTE) mobile communication system has a lot of considerations in this regard, for example, hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) retransmission, interference coordination, coordinated multi-point transmission and reception and other technologies. Wherein, the HARQ retransmission p...

AI Technical Summary

Problems solved by technology

If the cell continues to receive strong interference, it is difficult to obtain time diversity gain even though there are multiple retransmissions, resulting in an increase in the packet error rate

[0003] The LTE-A system proposes carrier aggregation (Carrier Aggregation, CA) technology, which can aggregate multiple component carriers (Component Carrier, CC) to achieve high-bandwidth transmission, but for a certain data, it can only be limited to one component HARQ transmission under the carrier, when the carrier continues to be interfered, this problem cannot be solved

[0004] Existing systems consider various anti-jamming technologies separately, without unified consideration at the system level, resulting in complex network configuration and inconvenient network optimization work

On the other hand, under the same technical means, different anti-jamming capability requirements require different system overheads. For example, HARQ retransmission is used to solve the anti-jamming capability. The higher the anti-jamming capability requirement, the more HARQ The more retransmission times, the higher the resource overhead of the system is about

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