Method for determining timing advance, terminal device, and network side device

A technology of network side equipment and timing advance, which is applied in the field of determining timing advance and network side equipment, can solve the problems of different time and inaccurate adjustment results, and achieve the effect of improving accuracy and realizing uplink synchronization

Active Publication Date: 2012-10-17
HUAWEI TECH CO LTD
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Problems solved by technology

[0009] However, in the CoMP scenario, due to the different distances between the UE and different nodes, the time for the signal to reach different nodes may be different
And due

Method used

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  • Method for determining timing advance, terminal device, and network side device
  • Method for determining timing advance, terminal device, and network side device
  • Method for determining timing advance, terminal device, and network side device

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[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. 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.

[0051] The technical solution of the present invention can be applied to various communication systems, such as: GSM, Code Division Multiple Access (CDMA, Code Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access Wireless), general packet Wireless service (GPRS, General Packet Radio Service), Long Term Evolution (LTE, Long Term Evolution), etc.

[0052] A mobile terminal (Mobile Terminal)...

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Abstract

The invention provides a method for determining timing advance (TA), a terminal device, a network side device and a communication system. The method comprises the following steps of: receiving a CSI-RS configuration or activation message of the network side device, wherein the message is used for configuring or activating a CSI-RS; transmitting a synchronization signal to the network side device on the basis of the CSI-RS configuration or activation message; receiving a TA adjustment message transmitted by the network side device, wherein the message carries a TA value determined by the network side device on the basis of the synchronization signal; on the basis of the TA value carried in the TA adjustment message, determining the TA value corresponding to the configured or activated CSI-RS. The synchronization signal is transmitted by a terminal to a network side on the basis of the CSI-RS configuration or activation message of the network side, and the corresponding TA value is calculated by the network side on the basis of the synchronization signal and then returned to the terminal, thus the terminal is enabled to learn the corresponding relation between the TA value and the CSI-RS, thereby the precision of uplink timing is raised, and uplink synchronization is realized.

Description

technical field [0001] The embodiments of the present invention relate to the field of wireless communication, and more specifically, to a method for determining a timing advance, a terminal device, and a network side device. Background technique [0002] In the LTE (Long Term Evolution; long-term evolution) R11 version, a new operation scenario will be introduced, that is, coordinated multi-point transmission / reception, CoMP (coordinated multi-point) for short. The main benefit of implementing CoMP is that the rate of data transmission can be increased, for example, the transmission of video services can be performed smoothly, thereby improving user satisfaction. Currently, there are four specific scenarios that need to be focused on for research, namely: [0003] Scenario 1: CoMP within a homogeneous website; [0004] Scenario 2: Homogeneous network with high power remote radio head (RRH); [0005] Scenario 3: In a heterogeneous network scenario with low power RRH, the ...

Claims

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Application Information

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IPC IPC(8): H04W56/00
CPCH04B7/024H04W56/0045
Inventor 常俊仁李亚娟
Owner HUAWEI TECH CO LTD
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