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A synchronous recovery method and a synchronous recovery device of a terminal sleep wake-up

A recovery method, sleep technology, applied in the field of communication

Active Publication Date: 2018-12-18
RDA CHONGQING MICROELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0035] To sum up, the prior art terminal wake-up synchronization recovery method does not solve the problem of high power consumption in eMTC terminal idle mode

Method used

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  • A synchronous recovery method and a synchronous recovery device of a terminal sleep wake-up
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  • A synchronous recovery method and a synchronous recovery device of a terminal sleep wake-up

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Experimental program
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Embodiment 1

[0252] The implementation scenario of the preferred embodiment 1 of the present invention is that the signal quality of service of the base station is located in the normal coverage area of ​​the Cat-M1 UE.

[0253] Step S0:

[0254] Based on the simulation platform, it is confirmed that the synchronization recovery algorithm scheme of the present invention includes the complete cell reference signal required for accurate timing / frequency synchronization estimation in preset downlink signal quality (cell reference signal SINR) scenarios (covering extreme coverage enhancement to strong signal coverage) The number of regular subframes is the number of subfNum subframes;

[0255] Preset downlink signal quality recommended coverage -20dB<=SINR<=30dB;

[0256] In this embodiment, SINR=0dB, and subfNum=4 is the number of conventional subframes containing complete cell reference signals required for accurate timing / frequency synchronization estimation;

[0257] Step S1:

[0258] Bef...

Embodiment 2

[0310] The implementation scenario of the preferred embodiment 2 of the present invention is that the signal service quality of the base station is within the scope of the Cat-M2UE coverage enhancement mode A.

[0311] Step S0:

[0312] Based on the simulation platform, it is confirmed that the synchronization recovery algorithm scheme of the present invention includes the complete cell reference signal required for accurate timing / frequency synchronization estimation in preset downlink signal quality (cell reference signal SINR) scenarios (covering extreme coverage enhancement to strong signal coverage) The number of regular subframes is the number of subfNum subframes;

[0313] Preset downlink signal quality recommended coverage -20dB<=SINR<=30dB;

[0314] In this embodiment, SINR=-12dB, and subfNum=20 is the number of conventional subframes containing complete cell reference signals required for accurate timing / frequency synchronization estimation;

[0315] Step S1:

[0...

Embodiment 3

[0368] The implementation scenario of the third preferred embodiment of the present invention is that the base station signal quality of service is within the scope of Cat-M1 UE coverage enhancement mode B.

[0369] Step S0:

[0370] Based on the simulation platform, it is confirmed that the synchronization recovery algorithm scheme of the present invention includes the complete cell reference signal required for accurate timing / frequency synchronization estimation in preset downlink signal quality (cell reference signal SINR) scenarios (covering extreme coverage enhancement to strong signal coverage) The number of regular subframes is the number of subfNum subframes;

[0371] Preset downlink signal quality recommended coverage -20dB<=SINR<=30dB;

[0372] In this embodiment, SINR=-20dB, and subfNum=64 is the number of conventional subframes containing complete cell reference signals required for accurate timing / frequency synchronization estimation;

[0373] Step S1:

[0374...

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Abstract

The invention provides a synchronous recovery method and a synchronous recovery device of a terminal sleep wake-up with high synchronous recovery efficiency, simplified synchronous recovery time and guaranteed paging monitoring and measurement performance. The method comprises the following steps of obtaining the terminal sleep wake-up triggering time information; completing the terminal wake-up according to the sleep wake-up triggering time information; receiving a downlink sub-frame containing a preset number value of PBCH channels and sequentially performing timing synchronization estimation and frequency synchronization estimation; completing Timing synchronization recovery and frequency synchronization recovery and starting paging time monitoring. The invention has the advantages that: data sample for synchronization recovery scheme can be satisfied fas, the synchronization recovery efficiency is obviously improved, the UE using the synchronous recovery method of the invention canrealize the purpose of significantly reducing the synchronous recovery time while ensuring the paging monitoring and measurement performance in all application scenarios including the limit coverageenhancement.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for synchronous recovery of sleep wake-up of an Internet of Things terminal. Background technique [0002] For the evolution of network deployment, operators generally hope to reduce network operation and maintenance costs by minimizing the number of radio access technologies (abbreviated, RATs) they maintain. Faced with the explosive growth of IoT demand, benefiting from the good coverage of 2G networks and the low-power consumption and low-cost attributes of IoT demand, terminal manufacturers have insufficient driving force to provide IoT products based on conventional 4G technology. As more and more 2G IoT products come into practical application, the dependence on 2G network is even more aggravated, which makes operators not only need to maintain more RATs, but also cannot maximize the efficiency of their own spectrum (Note: 2G , 3G, 4G acc...

Claims

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Application Information

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IPC IPC(8): H04W4/70H04W52/02H04L27/26
CPCH04L27/2655H04W52/02H04W4/70Y02D30/70
Inventor 谭舒杨恩浩
Owner RDA CHONGQING MICROELECTRONICS TECH CO LTD
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