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Time synchronization method and time synchronization device for baseband pool server

A time synchronization device and time synchronization technology, applied in the direction of synchronization devices, wireless communications, electrical components, etc., can solve the problem of low time synchronization accuracy of the baseband pool, and achieve the effect of improving the time synchronization accuracy

Active Publication Date: 2020-03-13
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a time synchronization method, a time synchronization device and a wireless communication protocol stack system to solve the problem of low time synchronization accuracy of baseband pools based on general-purpose processor platforms in the prior art

Method used

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  • Time synchronization method and time synchronization device for baseband pool server
  • Time synchronization method and time synchronization device for baseband pool server
  • Time synchronization method and time synchronization device for baseband pool server

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Such as image 3 As shown, the time synchronization method of the baseband pool server provided by Embodiment 1 of the present invention includes:

[0076] Step 31: Obtain a frequency synchronization signal and a phase synchronization signal generated based on the reference time signal;

[0077] Step 32: Generate a periodic timing signal of the communication system to which the baseband pool server belongs according to the frequency synchronization signal and the phase synchronization signal;

[0078] Step 33: According to the periodic timing signal, timing triggers the memory write operation of the peripheral component interconnection expansion PCIe interface between the baseband pool server, and sends the periodic timing signal to the shared memory of the baseband pool server, Stored as sync time information.

[0079] The baseband pool server may be a baseband pool server of a centralized radio access network C-RAN;

[0080] By establishing a connection with the ba...

Embodiment 2

[0120] Such as Figure 7 As shown, the time synchronization device provided in Embodiment 2 of the present invention includes:

[0121] An acquisition module 71, configured to acquire a frequency synchronization signal and a phase synchronization signal generated based on the reference time signal;

[0122] A generating module 72, configured to generate a periodic timing signal of the communication system to which the baseband pool server belongs according to the frequency synchronization signal and the phase synchronization signal;

[0123] The first processing module 73 is used to regularly trigger the memory write operation of the peripheral component interconnection expansion PCIe interface with the baseband pool server according to the periodic timing signal, and send the periodic timing signal to the baseband pool server In the shared memory of , it is stored as synchronous time information.

[0124] The baseband pool server may be a baseband pool server of a centraliz...

Embodiment 3

[0140] Such as Figure 8 As shown, the time synchronization method for the baseband pool server provided by Embodiment 3 of the present invention includes:

[0141] Step 81: Read the synchronization time information in the shared memory of the baseband pool server, the synchronization time information is generated by an external time synchronization device, and is regularly written to the time synchronization device through the memory write operation of the PCIe interface. Shared memory;

[0142] Step 82: judging whether the current time is the start time according to the synchronization time information;

[0143] Step 83: If yes, then perform protocol stack processing operations for uplink and downlink;

[0144] Step 84: If not, wait according to the current time until the startup time and then perform uplink and downlink protocol stack processing operations.

[0145] The time synchronization method of the baseband pool server provided by Embodiment 3 of the present invent...

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Abstract

The invention provides a time synchronization method, a time synchronization device and a wireless communication protocol stack system. The time synchronization method comprises the steps of acquiring a frequency synchronization signal and a phase synchronization signal which are generated on the basis of a reference time signal; generating a periodic timing signal of a communication system to which a baseband pool server belongs according to the frequency synchronization signal and the phase synchronization signal; and triggering a memory write operation of a time clock line interface between the time synchronization device and the baseband pool server according to the periodic timing signal in a timing manner, and sending the periodic timing signal to a shared memory of the baseband pool server. The scheme provided by the invention, the frequency synchronization signal and the phase synchronization signal can be acquired by directly utilizing a time synchronization technology of BBU equipment through additionally arranging the clock line interface, so that microsecond-level time signal precision is introduced to a universal processing platform, and the universal processor platform based baseband pool time synchronization precision is improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication wireless access, in particular to a time synchronization method, a time synchronization device and a wireless communication protocol stack system. Background technique [0002] With the development of mobile communication technology and the rapid growth of mobile Internet services, mobile communication networks are faced with many problems, such as high energy consumption, high construction and operation costs, tight spectrum resources, rapidly growing business traffic, and increasingly severe cost pressures. challenge. Radio Access Network (RAN, Radio Access Network) needs to continuously increase the number of base stations, and increase network capacity through means such as cell splitting. Densely deployed base stations further cause serious wireless signal interference in adjacent cells. At the same time, isolated base stations cannot effectively handle the dynamic network load ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
CPCH04W56/0035
Inventor 孔令斌段然崔春风易芝玲
Owner CHINA MOBILE COMM LTD RES INST