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Time frequency adjustment method and device

An adjustment method and time-frequency technology, applied in the field of communication, can solve problems such as voice packet loss and affecting user voice perception

Active Publication Date: 2020-05-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a time-frequency adjustment method and device to solve the problem in the prior art that voice packets are lost due to control messages carrying adjustment information preempting dedicated service channel resources, thereby affecting user voice perception

Method used

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  • Time frequency adjustment method and device

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Embodiment Construction

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0039] In the satellite mobile communication system, due to the large coverage of the cell, the number of users that need to be served in the cell is large, and the wireless resources are very limited. In order to effectively improve the wireless resource utilization of the system, different logical channels are usually used to share wireless resources. For example, the DTCH channel and the DACH channel share the same frequency and time resources, ...

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Abstract

The invention discloses a time frequency adjustment method and device. The method comprises acquiring time frequency offset information of a terminal, judging whether time-frequency adjustment needs to be carried out on the terminal or not according to the time frequency offset information, and when it is determined that time-frequency adjustment needs to be carried out on the terminal, carrying out time-frequency adjustment on the terminal by using a logic channel which can be subjected to frequency division multiplexing with the special service channel, so that the special service channel and the logic channel can transmit data at the same time, loss of data packets is reduced, and customer voice perception is improved.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a time-frequency adjustment method and device. Background technique [0002] In the satellite mobile communication system, when the terminal sends uplink data to the base station, it usually reports the terminal's time-frequency and frequency offset information. If the network side finds that the terminal's time-frequency and frequency offset information reaches the preset threshold, it is generally The terminal will be required to adjust the time offset information and frequency offset information. [0003] At present, when adjusting the time offset information and frequency offset information of the terminal, the dedicated associated control channel (Dedicated Associated Control Channel, DACCH) is usually used to transmit control messages carrying adjustment information. Because the DACCH channel and the dedicated traffic channel ( Dedicated Traffic Channel (DTCH) uses...

Claims

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Application Information

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IPC IPC(8): H04B17/382H04L27/00H04W24/08H04W72/04H04L5/00
CPCH04L5/0053H04L27/0014H04L2027/0026H04W24/08H04W72/0446H04B17/382
Inventor 田华
Owner DATANG MOBILE COMM EQUIP CO LTD
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