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Sub-band contraction method and device in LTE230 system

A subband and terminal technology, applied in the field of communication, can solve the problems of too fast subband shrinkage and low uplink transmission rate, and achieve the effect of improving data transmission rate and accuracy

Pending Publication Date: 2021-01-12
POTEVIO INFORMATION TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a subband shrinkage method and device in an LTE230 system, which is used to solve the problem of improving or stabilizing the uplink SINR after the channel transmission quality deteriorates seriously, and avoiding the subband shrinkage too fast or too slow The technical problem of low uplink transmission rate

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  • Sub-band contraction method and device in LTE230 system

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0032] In the embodiment of the present invention, for a UE transmitting non-precisely controlled services in the LTE230 system, when the SINR of the uplink signal decreases continuously during its movement, the MCS level is reduced to the subband contraction index threshold of the MCS, for example, reduced to the lowest order (order 0 ), a...

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Abstract

The embodiment of the invention provides a sub-band contraction method and device in an LTE230 system, and the method comprises the steps: calculating the cumulative number of MCS_th according to thecurrent uplink transmission quality information of a terminal if a judgment result shows that the MCS level of an uplink modulation and coding strategy is reduced to a preset sub-band contraction index threshold MCS_th; and performing sub-band contraction control on the terminal according to the cumulative number of MCS_th. On the contrary, the recovery process of the contraction sub-band is viceversa. According to the sub-band contraction method and device in the LTE230 system provided by the embodiment of the invention, the preset sub-band contraction triggering condition is dynamically adjusted according to the current uplink transmission quality information of the terminal to change the sub-band contraction speed, so that the power spectral density of the terminal is adaptively changed. Therefore, the floating change of the uplink SINR can be stabilized within a certain range, the signal demodulation requirement is met, and the data transmission rate and accuracy are improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a subband shrinkage method and device in an LTE230 system. Background technique [0002] The LTE230 system is a dedicated 4G network communication system designed for power communication networks. Transmission provides a complete bearing platform. The system can flexibly provide single sub-band or multiple sub-band frequency band resources for scheduling in order to meet the QoS of different service transmissions for various service transmissions of the power communication network (such as precise control services, non-fine control services, paging services, etc.) and resource requirements. Among them, when allocating multi-subband system resources for non-fine control services, it is considered that some UEs are moving away from the base station or approaching the base station from a distance, and without closed-loop power control, the UE's The signal-to-noise ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/04H04W24/08H04L5/00H04B17/336H04B17/382
CPCH04W24/04H04W24/08H04L5/0055H04B17/336H04B17/382
Inventor 胡健姜春霞袁菁
Owner POTEVIO INFORMATION TECH CO LTD