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Time synchronization method, master time synchronization device and communication system

A synchronization device and time synchronization technology, applied in the communication field, can solve the problems of poor versatility and high deployment cost, and achieve the effect of improving versatility and saving deployment cost

Active Publication Date: 2020-10-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to provide a time synchronization method, a master time synchronization device and a communication system to solve the problems of high deployment cost and poor versatility in existing GNSS synchronization methods

Method used

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  • Time synchronization method, master time synchronization device and communication system
  • Time synchronization method, master time synchronization device and communication system
  • Time synchronization method, master time synchronization device and communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] See figure 2 As shown, the time synchronization method provided in this embodiment includes the following steps:

[0065] Step 201: the master time synchronization device synchronizes the local frame information with the frame information of the master base station;

[0066] Step 202: The master time synchronization device converts the synchronized frame information to obtain the PTP time and then counts the time;

[0067] Step 203: the master time synchronization device sends a time synchronization message including the current PTP time to the slave base station to be synchronized to perform time synchronization on the slave base station.

[0068] The master time synchronization device in this embodiment can use the air interface synchronization function to synchronize the local frame information with the frame information of the donor base station. It should be understood that the master time synchronization device may be a wireless repeater with an air interface s...

Embodiment 2

[0085] This embodiment provides a master time synchronization device. The master time synchronization device may be a wireless repeater with an air interface synchronization function or a base station with an air interface synchronization function. Please refer to Figure 5 shown, which includes:

[0086] The air interface synchronization module 1 is used to synchronize the local frame information with the frame information of the host base station;

[0087] The time conversion module 2 is used for timing after converting the synchronized frame information to obtain the PTP time;

[0088] The synchronization service module 3 is used to obtain the current PTP time from the time conversion module 2 and add the time synchronization message to the secondary base station to be synchronized for time synchronization.

[0089] The master time synchronization device in this embodiment can use the air interface synchronization function to synchronize the local frame information with th...

Embodiment 3

[0107] This embodiment provides a communication system, please refer to Figure 10 As shown, the slave base station 1001, master base station 1002, and master time synchronization device 1003 to be synchronized, the master time synchronization device in this embodiment can be a wireless repeater, or a base station with an air interface synchronization function.

[0108] The master time synchronization device 1003 is used to synchronize the local frame information with the frame information of the master base station 1002, convert the synchronized frame information to obtain the PTP time, then perform timing, and send the time including the current PTP time to the slave base station 1001 The synchronization message performs time synchronization on the slave base station 1001;

[0109] The time synchronization message is received from the base station 1001, the PTP time is extracted from the time synchronization message, and the local time is synchronized according to the extrac...

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PUM

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Abstract

The invention discloses a time synchronization method, main time synchronization device, communication system, and data storage medium. The time synchronization method comprises: synchronizing, by an air interface synchronization module of a main time synchronization device, local frame information with frame information of a donor eNodeB, converting, by the main time synchronization device, the synchronized frame information into a precision time protocol (PTP) time, and then timing, by the main time synchronization device, a time; during the synchronizing step, obtaining, by the main time synchronization device, a local present PTP time, inserting, by the main time synchronization device, the local present PTP time into a time synchronization message, and transmitting, by the main time synchronization device, the time synchronization message to a sub-eNodeB to be synchronized; and upon receiving the time synchronization message, completing, by the sub-eNodeB, according to the PTP time in the time synchronization message, time synchronization.

Description

technical field [0001] The invention relates to the field of communication, in particular to a time synchronization method, a master time synchronization device and a communication system. Background technique [0002] An application scenario where a base station uses a wireless repeater is as follows figure 1 shown. There is no physical transmission channel between the base station (Base Station, BS, including base stations of various wireless standards and forms) to the core network, and the communication with the core network (Evolved PacketCore), EPC) through a donor base station (Donor eNodeB) and a Wireless repeater (WirelessRelay) equipment to complete. [0003] The TD-LTE (Time Division Long Term Evolution) system requires frame synchronization throughout the network. To achieve frame synchronization, the existing technology in the industry is to directly connect the clock reference source to the base station, including GNSS (Global Navigation Satellite System, inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
CPCH04W56/001H04W56/00
Inventor 罗丽
Owner ZTE CORP