Signal relay transfer method, device and system

Abstract

The invention discloses a signal relay transfer method, which comprises the following steps: receiving signals sent from a source node to a target node; then, respectively comparing power measuring values and quality measuring values of the signals to preset power threshold values and quality threshold values to obtain comparison results, or respectively comparing error code rate measuring valuesof the signals to preset first error code rate threshold values and second error code rate threshold values to obtain comparison results, wherein the first error code rate threshold values are lower than the second error code rate threshold values; and selecting a corresponding relay transfer method for sending the signals to the target node according to the comparison results when determining that the comparison results conform to the transfer conditions. Thereby, the invention furthest reduces the transmission delay, and improves the signal receiving success rate of the target node on the basis of avoiding the noise accumulation and avoiding the interference on other adjacent network nodes. The invention also discloses a communication device and a communication system.

Description

technical field [0001] The present invention relates to the communication field, in particular to a signal relay and forwarding method, device and system. Background technique [0002] In order to cooperate with the development of mobile communication services, the scale of the mobile communication system needs to be continuously expanded, including expanding cell coverage, increasing cell capacity, and so on. The interrupt transmission technology is one of the important technical means to realize the expansion of the system scale. [0003] The traditional relay transmission technology includes two implementation mechanisms: amplification and forwarding and decoding and forwarding. [0004] In the amplification and forwarding mechanism, each relay node directly amplifies the received signal of the source node, and then forwards it. Therefore, the amplification and forwarding mechanism is simple and has the advantages of low cost and small transmission delay; however, the s...

AI Technical Summary

Problems solved by technology

[0007] Although the above relay forwarding method combines the amplification and forwarding mechanism and the decoding and forwarding method to a certain extent, there is a lot of interference in the operating environment of the relay node, and when the quality of the received signal is poor, the amplification and forwarding method is directly used to send data Bag

Not only will it increase the reception failure rate, but it will also increase unnecessary transmission delay to a large extent, and it will easily cause interference to other network nodes

This is because the accumulated noise cannot be eliminated by using the amplification and forwarding mechanism. On the contrary, the noise will be amplified together with the signal. Therefore, if the signal quality received by the relay node is poor, the use of the amplification and forwarding mechanism will not only fail to improve the signal quality, but will amplify the signal in the signal. contained noise, thereby multiplying the interference to other adjacent network nodes

Images