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Air interface time synchronization method and system, wireless device, wireless device controller

A time synchronization and wireless device technology, applied in the field of communication, can solve the problems of RE air interface processing time asynchronous, difference in transmission mode and processing mode, transmission delay and delay jitter, etc., and achieve the effect of air interface time synchronization

Active Publication Date: 2016-09-28
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] However, when the Ethernet switching network or bearer transmission network implements data transmission between REC and RE, due to the large number of devices on the Ethernet switching network or bearer transmission network, data needs to pass through multi-stage transmission equipment from REC to RE, and the transmission of each equipment There is also a big difference in the method and processing method, which will lead to transmission delay and delay jitter, so that the RE air interface processing time is not synchronized, and cannot meet the air interface time synchronization requirements of the wireless communication protocol.

Method used

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  • Air interface time synchronization method and system, wireless device, wireless device controller
  • Air interface time synchronization method and system, wireless device, wireless device controller
  • Air interface time synchronization method and system, wireless device, wireless device controller

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Embodiment Construction

[0037] Embodiments of the present invention provide an air interface time synchronization method and system, a wireless device, and a wireless device controller for implementing air interface time synchronization between REs.

[0038] In the embodiment of the present invention, the CPRI interface and the OBSAI interface use time-division data stream transmission to transmit data, and the packetized transmission of the base station performs packet mode data transmission through the bearer transmission network or the Ethernet switching network, wherein the interface form of the packetized data transmission of the base station It can be Fast Ethernet (FE) or Gigabit Ethernet (GE) or 10 Gigabit Ethernet (10GE) with optical or electrical ports. There are two typical application scenarios , see figure 1 , which is an architectural diagram of the connection between REC and RE through an Ethernet switch. By utilizing the high availability of Ethernet interfaces (such as FE / GE / 10GE, et...

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Abstract

Embodiments of the present invention disclose an air interface time synchronization method and system, a wireless device, and a wireless device controller, which are used to realize air interface time synchronization on the RE side. The method according to the embodiment of the present invention includes: a wireless device RE receives a data frame sent by a wireless device controller REC, where the data frame carries time information; and sending the data carried in the data frame according to the time information can effectively implement the RE side air interface time synchronization.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an air interface time synchronization method and system, a wireless device, and a wireless device controller. Background technique [0002] Currently, the two most used baseband radio frequency interface protocols in the world are Common Public Radio Interface (Common Public Radio Interface, CPRI) and Open Base Station Architecture Initiative (Open BaseStation Architecture Initiative, OBSAI) interface. The CPRI interface and OBSAI interface system adopt time-division data flow transmission mode, and the interface form can be electrical port or optical port. The traditional base station system topology based on these two interfaces includes star structure, chain structure, tree structure, and ring structure. Wait. [0003] Both the CPRI interface and the OBSAI interface define standards for the maximum round-trip transmission delay (Round-Trip Time, RTT) and delay jitter, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
Inventor 张瑜
Owner HUAWEI TECH CO LTD
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