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VoLTE voice quality improvement method and device for TD-LTE

A voice quality and voice packet technology, applied in the computer field, can solve the problems of weak coverage, insufficient voice quality improvement, and many users.

Active Publication Date: 2019-12-17
CHINA MOBILE GROUP ZHEJIANG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the process of realizing the invention, the inventors found that the existing solutions for optimizing VoLTE voice quality in high-speed scenarios mainly refer to the optimization solutions of conventional LTE networks, and do not fully consider the movement of VoLTE voice services in high-speed scenarios. The characteristics of fast speed, weak coverage, and many users are not enough to improve the voice quality.

Method used

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In order to facilitate the understanding of the method provided by the embodiment of the present invention, the resource allocation method for downlink data transmission in the prior art is first described.

[0029] First, the concepts of CQI (Channel Quality Indicator), MCS (Modulation and Coding Scheme, modulation and coding strategy), and TBS (Transmit Block Size, transmission block size) are introduced.

[0030] LTE Physical Shared C...

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Abstract

The embodiment of the invention provides a VoLTE voice quality improvement method and device for TD-LTE. In the method, network side equipment (such as a base station) can carry out secondary order selection on the MCS after the MCS and the TBS are preliminarily determined according to the CQI; the TBS which can bear the VoLTE voice packet to be sent and can reduce the order of the MCS can be selected under the condition that the number of RBs is kept unchanged (namely, the capacity of an air interface is kept unchanged); therefore, the purpose of MCS order reduction is achieved while normal transceiving of data is ensured, the signal anti-interference capability of a data packet is improved, and the VOLTE voice quality is improved.

Description

technical field [0001] The embodiment of the present invention relates to the field of computer technology, in particular to a TD-LTE VoLTE voice quality improvement method and device. Background technique [0002] Different from VoLTE voice services in conventional slow-moving scenarios or fixed-location scenarios, VoLTE services in high-speed scenarios face problems such as high penetration loss of high-speed rail, fast moving speed of users, and many online users at the same time. The impact on LTE networks in normal scenarios is minor, but in high-speed scenarios it is a key issue affecting VoLTE voice quality, which can easily lead to interruptions, word swallowing, and packet loss in VoLTE services, seriously affecting VoLTE user perception. [0003] At present, the voice quality of VoLTE in high-speed scenarios is optimized mainly through conventional LTE basic parameters such as handover delay, handover delay, power parameters, DRX parameters and inter-system mobilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L29/06H04W28/18
CPCH04L1/0003H04L1/0009H04W28/18H04L1/0026H04L65/1016H04L65/80
Inventor 徐炜亮安久江林竹轩彭陈发
Owner CHINA MOBILE GROUP ZHEJIANG
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