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Uplink synchronization method and device for multi-carrier system

A multi-carrier system, line synchronization technology, applied in the field of communication, can solve problems such as difficulty in realizing uplink synchronization, and achieve the effect of guaranteeing services

Inactive Publication Date: 2019-02-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of difficult realization of uplink synchronization in a multi-carrier application scenario, the present invention provides an uplink synchronization method and device for a multi-carrier system to at least solve the above-mentioned problems

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  • Uplink synchronization method and device for multi-carrier system
  • Uplink synchronization method and device for multi-carrier system
  • Uplink synchronization method and device for multi-carrier system

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Embodiment Construction

[0040] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0041] The embodiment of the present invention mainly describes the realization of uplink synchronization by a multi-carrier terminal, for example figure 1 The schematic diagram of a multi-carrier terminal is shown, and the terminal supports three frequency bands, that is, the frequency band 1 , frequency band 2 , frequency band 3 , the width and center frequency of each frequency band have specific regulations in the International Telecommunications Union (International Telecommunications Union, referred to as ITU) specifications, which will not be described in detail here; operators have configured several carriers on these three frequency bands, namely figure 1 Carrier in 11 to the carrier 32...

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Abstract

Disclosed is an uplink synchronization method and device of a multi-carrier system. The method comprises: a terminal acquiring an uplink synchronization adjustment amount of an auxiliary carrier timing group, a specific performance parameter of each carrier in the auxiliary carrier timing group being in a set range; the terminal performing uplink synchronization adjustment on a carrier in the auxiliary carrier timing group according to the uplink synchronization adjustment amount. By means of the present invention, uplink synchronization is performed on each carrier in the auxiliary carrier timing group in a mode of the group, so that the problem that it is difficult to realize uplink synchronization in a multi-carrier application scenario is solved, and it is ensured that signals of carriers of a multi-carrier terminal can simultaneously reach a base station when each carrier sends an uplink signal, thereby ensuring the service between the base station and the terminal.

Description

technical field [0001] The present invention relates to the communication field, in particular to an uplink synchronization method and device for a multi-carrier system. Background technique [0002] Uplink synchronization is one of the key technologies of wireless communication. It specifically means that different terminals adjust their uplink signal transmission timing under the synchronization control of the base station, so that the uplink signals arriving at the base station can reach the receiving antenna port of the base station at the same time. Good uplink synchronization can minimize interference between users, and the performance of uplink synchronization is directly related to the performance of the entire system. [0003] At present, the uplink synchronization of the wireless Long-Term Evolution (LTE) system is realized as follows: first, the base station receives the uplink signal sent by the terminal last time, estimates the terminal path delay and adjustment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04W74/08
CPCH04W56/0045H04W74/08
Inventor 朱昀
Owner ZTE CORP
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