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Selection Method of Modulation and Coding Mode and Base Station

A technology of modulation and coding methods and base stations, which is applied to the selection method of modulation and coding methods and the field of base stations, and can solve the problems of not being able to reflect real-time channel changes and failing to achieve high data throughput rates, etc.

Active Publication Date: 2019-05-07
HUAWEI TECH CO LTD
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  • Summary
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Problems solved by technology

[0003] In the prior art, the initial block error rate (Initial Block Error Rate, IBLER) target value in the modulation and coding scheme (Modulation and Coding Scheme, MCS) selection method cannot reflect the real-time change of the channel in the actual system. MCS selection method, user equipment (User Equipment, UE) cannot achieve a high data throughput rate

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  • Selection Method of Modulation and Coding Mode and Base Station
  • Selection Method of Modulation and Coding Mode and Base Station
  • Selection Method of Modulation and Coding Mode and Base Station

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Embodiment 1

[0052] Based on Embodiment 1 of the present invention, the method for selecting a modulation and coding scheme in the present invention will be described in detail below.

[0053] The SINR measurement value can be obtained by direct measurement or indirect measurement: when the direct measurement method is adopted, by measuring the channel sounding reference signal (Sounding Reference Signal, SRS) or demodulation reference signal (Demodulation Reference Signal, DMRS) The base station obtains the SINR measurement value of the UE; when the indirect measurement method is adopted, the base station reports the Power Headroom Report (PHR) and the UE's uplink Reference Signal Received Power (RSRP) according to the Power Headroom Report (PHR) reported by the UE. Estimate the SINR measurement value of the UE.

[0054] The average SINR is the sum of the N SINR measurements divided by N. For example, for N=2, the average value of SINR=(SINR1+SINR2) / 2, wherein, SINR1 is the SINR measurem...

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Abstract

Embodiments of the present invention relate to a method for selecting a modulation and coding scheme and a base station. The method comprises: acquiring an average signal to interference plus noise ratio (SINR) value and an average SINR difference value of a user equipment (UE) in a statistics period, wherein the statistics period comprises N transmission time intervals (TTIs) before a current TTI, and N>1; determining a target initial block error rate (IBLER) value of the UE according to the average SINR value and the average SINR difference value; acquiring a measured IBLER value of the UE at the current TTI; adjusting a filtered SINR value of the UE according to the measured IBLER value and the target IBLER value, so as to acquire a final SINR value of the UE; and selecting a modulation and coding scheme (MCS) for the UE according to the final SINR value. In view of the above, in the embodiments of the present invention, the target IBLER value determined in the foregoing manner can reflect the actual channel quality fluctuations, and the MCS selected according to the method can improve the spectral efficiency of the UE and thus increase the throughput rate of the UE.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for selecting a modulation and coding mode and a base station. Background technique [0002] In a wireless mobile communication system, the wireless environment will change rapidly with time and space, so that when the transmitted signal is the same, the received signal may attenuate to different degrees. In a Long Term Evolution (LTE) system, in order to obtain stable system performance, Adaptive Modulation and Coding (AMC) is adopted. [0003] In the prior art, the initial block error rate (Initial Block Error Rate, IBLER) target value in the modulation and coding scheme (Modulation and Coding Scheme, MCS) selection method cannot reflect the real-time change of the channel in the actual system. In the MCS selection method, the user equipment (User Equipment, UE) cannot achieve a higher data throughput rate. Contents of the invention [0004] Embodiments of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12
CPCH04W72/12
Inventor 丁承彭炳光
Owner HUAWEI TECH CO LTD
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