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Information notification and timing advance (TA) obtaining method, system and equipment thereof

A technology of timing advance group and information notification, which is applied in the field of information notification and timing advance acquisition, and can solve problems such as inability to obtain TAgroup information

Inactive Publication Date: 2012-05-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] Embodiments of the present invention provide an information notification method, an information notification device, and a base station, which are used to solve the problem that the terminal cannot obtain TA group information

Method used

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  • Information notification and timing advance (TA) obtaining method, system and equipment thereof
  • Information notification and timing advance (TA) obtaining method, system and equipment thereof
  • Information notification and timing advance (TA) obtaining method, system and equipment thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0109] In this embodiment, the base station supports 4 cells, and the numbers of the 4 cells are 1, 2, 3, and 4 respectively; details are as follows:

[0110] Step 01: According to the network planning, the base station determines that the signals of cell1 and cell2 can be sent to the base station without passing through the RRU / repeater, and the signals of cell3 and cell4 need to pass through the RRU or repeater first before being sent to the base station. Therefore, the base station can determine that cell 1 and cell 2 belong to the same TA group, and record this TA group as TA group 1; while cell 3 and cell4 belong to another TA group, and record this TA group as TA group2. The base station sends the mapping relationship between cell 11, cell 2 and TA group 1, cell 13, cell 4 and TA group 2 to the UE through a broadcast message;

[0111] The mapping relationship carried in the broadcast message can be in the following two ways:

[0112] Method 1:

[0113] TA grou...

Embodiment 2

[0121] In this embodiment, the base station supports 4 cells, and the numbers of the 4 cells are 1, 2, 3, and 4 respectively; details are as follows:

[0122] Step 11: According to the network planning, the base station determines that the signals of cell1 and cell2 can be sent to the base station without passing through the RRU / repeater, and the signals of cell3 and cell4 need to pass through the RRU or repeater before being sent to the base station. Therefore, the base station can determine that cell 1 and cell 2 belong to the same TA group, and record this TA group as TA group 1; while cell 3 and cell4 belong to another TA group, and record this TA group as TA group2. After the UE establishes an RRC connection with the base station on cell 1, the base station sends the mapping relationship between cell 11, cell 2 and TA group 1, cell 13, cell 4 and TA group 2 to the UE through RRC reconfiguration signaling;

[0123] The mapping relationship in the RRC reconfiguration signal...

Embodiment 3

[0128] In this embodiment, the base station supports 4 cells, and the numbers of the 4 cells are 1, 2, 3, and 4 respectively; details are as follows:

[0129] Step 21: According to the network planning, the base station determines that the signals of cell1 and cell2 can be sent to the base station without passing through the RRU / repeater, and the signals of cell3 and cell4 need to pass through the RRU or repeater before being sent to the base station. Therefore, the base station can determine that cell 1 and cell 2 belong to the same TA group, and record this TA group as TA group 1; while cell 3 and cell4 belong to another TA group, and record this TA group as TA group2. After the UE establishes an RRC connection with the base station on cell 1, the base station sends the mapping relationship between cell 11, cell 2 and TA group 1, cell 13, cell 4 and TA group 2 to the UE through RRC reconfiguration signaling;

[0130] The mapping relationship in the RRC reconfiguration signal...

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Abstract

The embodiment of the invention, which relates to the wireless communication technology field, discloses an information notification and timing advance (TA) obtaining method, a system and equipment thereof. The method, the system and the equipment are used to solve a problem of how to acquire the TA, which is used when uplink transmission is carried out in a new added cell, by the terminal, wherein the new added cell is added in a cell set of terminal configuration. The method is characterized in that: a base station sends a mapping relation between the cell and a TA group to the terminal; the terminal determines that the base station is the TA group corresponding to the new added cell of the terminal configuration; whether there is a synchronization cell which corresponds with the TA group and establish uplink synchronization with the base station is determined; if there is the synchronization cell, the TA of the synchronization cell is taken as the TA used in the new added cell; otherwise, through initiating a random access process, the TA used in the new added cell is obtained. Therefore, by using the method, the system and the equipment of the invention, the terminal can obtain the TA used in uplink transmission performed on the new added cell.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method, system and equipment for information notification and timing advance acquisition. Background technique [0002] The peak rate of the Long Term Evolution (LTE Advanced, LTE-A) system is much higher than that of the Long Term Evolution (LTE) system, and is required to reach 1 Gbps downlink and 500 Mbps uplink. At the same time, the LTE-A system requires good compatibility with the LTE system. The LTE-A system introduces a carrier aggregation (Carrier Aggregation, CA) technology based on the need to increase the peak rate, be compatible with the LTE system, and make full use of spectrum resources. [0003] The carrier aggregation technology refers to a mechanism in which a terminal (UE) can aggregate multiple cells (cells) at the same time, and multiple cells can simultaneously provide data transmission services for the UE. In the carrier aggregation system, the com...

Claims

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Application Information

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IPC IPC(8): H04W56/00H04W68/00H04W74/08
CPCH04W56/00H04W56/0045
Inventor 赵亚利梁靖
Owner DATANG MOBILE COMM EQUIP CO LTD
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