Channel transmission quality monitoring method

Abstract

The invention discloses a channel transmission quality monitoring method. The method includes the steps that firstly, a current frame is received, the correctness of transmission of the current frame is detected, and NACKs which are the feedback are counted; secondly, whether the counting value of the NACKs is larger that the highest preset NACK threshold or not is judged in the operation process of a window with the length of W, if yes, the window is over and the third step is executed, and if not, the fourth step is executed; thirdly, whether the preset low transmission quality event reporting condition is met or not is judged, if yes, a poor transmission quality event is reported and the procedure is over, and if not, the fifth step is executed; fourthly, whether the counting value of the NACKs which are the feedback in the window with the length of W is lower than the lowest NACK threshold and meets the preset superior transmission quality event reporting condition, if yes, when the operation of the window with the length of W is completed, a superior transmission quality event is reported, and if not, the fifth step is executed; fifthly, the window moves forwards by the length of delta W, relevant window maintenance parameters and statistics parameters are updated, the step A is executed, and delta W is smaller than W.

Description

technical field [0001] The present application relates to the technical field of wireless communication, in particular to a method for monitoring channel transmission quality. Background technique [0002] In a mobile communication system, correct transmission is required in various application environments. In addition to improving transmission reliability, the demand for high-speed data services is also increasing. In order to transmit uplink and downlink data faster and more accurately between the base station and the terminal, it is necessary to adaptively select the modulation and coding method (MCS). [0003] Whether the MCS selection is correct depends largely on whether the MCS selection threshold matches the actual channel environment. If it does not match, it needs to be corrected in real time, which requires evaluation and judgment based on the state quality information of data transmission. In addition, in order to further ensure the reliability of transmission,...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the advantages of segmented windows are simple implementation, convenient processing, and low memory consumption. Each window only needs one counter to count bler, but since it is a segmented window, there is no time overlap between them , the statistical results are cleared after the previous window ends, and no reference can be given for the next statistics, which leads to many events with too large bler being missed in the burst channel environment

The advantage of the sliding window is that it can quickly capture the Bler too large event in the burst channel environment. Although the effect of theory and simulation is good, the cost is high implementation complexity and large memory consumption. For example, if the window is 100, then One user needs 100 units of memory, and 1000 users need 1000*100 memory for separate statistics and simultaneous monitoring. For this, a lot of hardware costs will be paid

[0007] Patent CN200580034257.8 provides an effective sliding window of a high-resolution timer, which is used to detect whether more than N events have occurred within the limited time of the sliding window, but the sliding windows are actually connected in segments, and according to the requirements The event requirements for detection, the window size is not necessarily fixed, and only event reports above a certain threshold and below a certain threshold can be provided

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