Method and device for correcting modulation and coding scheme (MCS) level of user

Abstract

The invention discloses a method and a device for correcting modulation and coding scheme (MCS) level of a user. The method and the device are used for solving the problems that the corrected MCS level does not accord with the actual relevancy and the channel state of the paired user because the MCS level of the user is corrected according to a constant return level in the prior art and then poorservice quality and low quality of service (QoS) are produced. The method comprises the following steps of: determining a spectrum efficiency corresponding to a user terminal to be corrected according to the spectrum efficiency of each permeable reactive barrier (PRB) stored by the user terminal to be corrected; determining an equivalent spectrum efficiency return value according to the relevancybetween the user terminal to be corrected and the paired user terminal thereof and the initial MCS level of the corrected user terminal; correcting the spectrum efficiency corresponding to the user terminal to be corrected according to the equivalent spectrum efficiency return value to obtain the corrected spectrum efficiency; and determining the corrected MCS level of the user terminal to be corrected according to the corrected spectrum efficiency and the channel type.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for correcting the MCS (Modulation and Coding Scheme) level of a user in MU-MIMO (MU-Multiple Input Multiple Output). Background technique [0002] At present, in order to improve the throughput of the entire system, uplink / downlink MU-MIMO is introduced in the LTE (Long Term Evolution, Long Term Evolution) system, although multiple UEs (User Equipment, User Equipment) can be simultaneously scheduled on the same time-frequency resource terminal), improve the frequency band utilization of the system and the number of users supported by the system through space division multiplexing; however, when MU-MIMO is used for transmission, it cannot strictly guarantee that the spatial channels between users on the same PRB are completely orthogonal, therefore, The introduction of MU-MIMO may increase the interference between PUSCH (Physical Uplink Shared Channel, Physic...

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Problems solved by technology

[0005] In view of the above-mentioned technical problems existing in the prior art, the embodiment of the present invention provides a method and device for correcting the MCS level of the user, so as to solve the problem of correcting the MCS level of the user according to the fixed return levels in the prior art, so that there is a problem of correcting the MCS level. The level does not match the actual correlation and channel status of the paired users, which in turn leads to poor service quality and low service QoS

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