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Base band unit and remote radio unit data service synchronization method, device and system

A data service and radio frequency unit technology, applied in the field of communication, can solve problems such as inability to guarantee complete synchronization of data services, difficulty in calculating path delay, and impact on system performance, so as to achieve the effect of ensuring frame synchronization of the entire network and realizing synchronization of data services

Active Publication Date: 2013-06-12
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0005] However, due to the asymmetry of Ethernet switching, especially when the intermediate link is too long, it is difficult to calculate the path delay of transmitting baseband radio frequency interface data through Ethernet when the intermediate link is too long. That is, the frames are completely synchronized, causing system performance to be affected

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  • Base band unit and remote radio unit data service synchronization method, device and system
  • Base band unit and remote radio unit data service synchronization method, device and system
  • Base band unit and remote radio unit data service synchronization method, device and system

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Embodiment Construction

[0049] A method for synchronizing data services between a baseband unit and a radio frequency unit provided by the present invention, such as figure 1 shown, including the following steps:

[0050] Step 101. Obtain the frame header phase information of the data service to be sent by the sending end, determine the reference time according to the frame header phase information, and obtain the sending end standard time;

[0051] Step 102, sending the PTP message to the receiving end and receiving the PTP message sent from the receiving end, and adding the difference between the sending service frame header and the reference time in the data service sent to the receiving end;

[0052] Step 103, according to the time of the PTP message received and sent by the receiving end and the time stamp carried in the PTP message, adjust the standard time of the receiving end, so that the standard time of the receiving end is synchronized with the standard time of the sending end;

[0053] Ste...

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Abstract

The invention discloses a base band unit and remote radio unit data service synchronization method, device and system. The method comprises the following steps of: acquiring frame header phase information of data service to be transmitted by a transmitting end and determining a reference moment according to the frame header phase information to obtain receiving end standard time; transmitting a PTP (Picture Transfer Protocol) message to a receiving end and receiving the PTP message transmitted from the receiving end, and adding a difference value of a receiving service frame header and the reference moment in the data service transmitted to the receiving end; adjusting the receiving end standard time according to the time for receiving and transmitting the PTP message by the receiving end and a time stamp carried in the PTP message; and calculating path time delay of data service according to the analyzed difference value of the transmitting service frame header and the reference moment and the difference value of the time for finishing adjustment of the receiving end standard time and the analyzed transmitting service frame header, and compensating according to the path time delay. According to the method, the device and the system, data service of a base band unit and a remote radio unit can be synchronized, and good performance of the system is guaranteed.

Description

technical field [0001] The present invention relates to a clock synchronization technology in the communication field, in particular to a data service synchronization method and system for a base band unit (Base Band Unit, BBU) and a radio frequency unit (Remote Radio Unit, RRU). Background technique [0002] The distributed base station architecture has become a development trend of the wireless communication system, and the baseband unit and the radio frequency unit can be separated based on the distributed base station architecture. The baseband unit in the distributed base station system is responsible for completing baseband processing and communicating with upper-layer network equipment. The radio frequency unit is responsible for processing the uplink and downlink radio frequency signals and interacting with the UE. [0003] For the wireless communication system, the baseband unit and the radio frequency unit are interconnected through the baseband radio frequency in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04W56/00
Inventor 罗丽傅小明邱文才
Owner ZTE CORP
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