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Method and device for adjusting block error rate

A technology of block error rate and adjustment module, applied in the direction of network traffic/resource management, digital transmission system, electrical components, etc., can solve the problems affecting the quality or efficiency of data transmission, matching, etc., and achieve the effect of improving the quality or efficiency of data transmission

Active Publication Date: 2011-10-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The inventors of the present application found that in this AMC mechanism, since the channel condition at the receiving end is constantly changing, the MCS level selected based on the UE’s feedback or the channel information measured by the base station and the set target initial BLER does not It cannot completely match the channel conditions during data transmission. Therefore, the initial block error rate of the receiving end is not completely equal to the set target initial BLER when the data is actually received.
If the MCS level is still selected according to the target initial BLER, the selected MCS level does not match the current channel conditions, which will affect the quality or efficiency of data transmission

Method used

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  • Method and device for adjusting block error rate
  • Method and device for adjusting block error rate
  • Method and device for adjusting block error rate

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Embodiment Construction

[0017] In the embodiment of the present invention, the MCS level is selected more accurately by adjusting the target initial BLER, thereby improving the quality or efficiency of data transmission.

[0018] see figure 1 , the main method flow for adjusting the block error rate in this embodiment is as follows:

[0019] Step 101: Determine the quality of service (QoS) index of the user's current service.

[0020] Step 102: Determine whether the target initial block error rate BLER needs to be adjusted according to the determined QoS index, if yes, adjust, otherwise keep the current target initial BLER unchanged.

[0021] In this embodiment, the QoS index includes many factors, such as air interface packet loss rate and air interface delay. The air interface packet loss rate and the air interface delay can take instantaneous values ​​or average values ​​(or smooth values). The following firstly introduces the process of determining the air interface packet loss rate and air in...

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Abstract

The invention discloses a method for adjusting block error ratio. The method is used for realizing the adjustment on initial error block ratio, and further improves the veracity of the adjustment in a modulation coding mode. The method comprises the following steps of determining the QoS (Quality of Service) index of the current service of the user; judging whether the target initial block error rate (BLER) needs to be adjusted or not according to the determined QoS index; if so, carrying out the adjustment; and if not, keeping the current target initial BLER unchanged. The invention also discloses a device for implementing the method.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a device for adjusting the block error rate. Background technique [0002] In the mobile communication system, due to the time-varying characteristics of the wireless fading channel, the fast fading can reach tens or even dozens of dB in a short period of time, so that there are a lot of uncertainties in the whole wireless communication process. In order to solve this problem and consider the throughput and reliability of the system comprehensively, the adaptive modulation coding technology (AMC, Adaptive Modulation Coding) is introduced in the wireless communication system. Modulation and Coding Scheme (MCS, Modulation and Coding Scheme), so as to obtain the best throughput under different channel conditions. In the current AMC scheme, one or several fixed initial block error ratios (BLER, block error ratio) are mostly set based on system simulation or network planning or...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W28/04H04W28/18
Inventor 朱志球高卓刘蓉
Owner DATANG MOBILE COMM EQUIP CO LTD
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