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Method and arrangement in a wireless communication system

A technology of wireless communication system and radio base station, which is applied in the direction of wireless communication, synchronization device, electrical components, etc., can solve the problem of prolonging the phase stability of RBS, and achieve the effect of prolonging the service time of RBS

Inactive Publication Date: 2013-02-27
ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] It is an object of embodiments of the present invention to address some of the problems and disadvantages outlined above, and to extend RBS phase stability in an accurate and cost-effective manner when the GPS signal used for reference timing is lost

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  • Method and arrangement in a wireless communication system
  • Method and arrangement in a wireless communication system
  • Method and arrangement in a wireless communication system

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Embodiment Construction

[0027] Hereinafter, the present invention will be described in more detail with reference to certain embodiments and drawings. Specific details are set forth, for purposes of explanation and not limitation, such as particular scenarios, techniques, etc., in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments that depart from these specific details.

[0028] Furthermore, those skilled in the art will appreciate that the functions and components explained herein below may be implemented using software functionality in conjunction with a programmed microprocessor or general purpose computer and / or using Application Specific Integrated Circuits (ASICs). It will also be appreciated that although the present invention has been primarily described in terms of methods and apparatus, the invention may also be implemented in computer program products and in sy...

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Abstract

The present invention relates to a method and a device for time synchronization of an RBS which has lost its GPS signal. The method in the time synchronization device comprises retrieving from the first radio base station a first timing advance value (710) used by the user equipment to adjust its transmission timing before the handover, and a measurement of a reception timing (720) of a random access preamble. The random access preamble is transmitted from the user equipment to the second radio base station during synchronization. The method also comprises retrieving (730) from the second radio base station a second timing advance value used by the user equipment to adjust its transmission timing after the handover, and determining (740) a time synchronization offset between the first and second radio base station based on the retrieved first timing advance value, the second timing advance value, and the measurement of the reception timing.

Description

technical field [0001] The invention relates to a method and a time synchronization arrangement in a radio base station of a wireless communication system. In particular the invention relates to determining a time synchronization offset between radio base stations. Background technique [0002] Universal Mobile Telecommunications System (UMTS) is one of the third generation mobile communication technologies designed to succeed GSM. 3GPP Long Term Evolution (LTE) is a project within the 3rd Generation Partnership Project (3GPP) to improve the UMTS standard to meet future requirements for improved services (eg higher data rates), improved efficiency, lower costs, etc. . Universal Terrestrial Radio Access Network (UTRAN) is a radio access network of the UMTS system and Evolved UTRAN (e-UTRAN) is a radio access network of the LTE system. like figure 1 As shown in , e-UTRAN typically includes user equipment (UE) 150 wirelessly connected to radio base stations (RBS) 110a-c (co...

Claims

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Application Information

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IPC IPC(8): H04W56/00
CPCH04W56/0045H04W56/0035
Inventor 张春辉J.奥斯特林苏又平
Owner ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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