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Method and device for realizing boundary clock in cascade base station

A boundary clock and clock technology, applied in the field of communication, can solve the problems of unable to realize carrier-grade OAM, unable to realize clock synchronization transmission, etc., and achieve the effect of improving accuracy

Inactive Publication Date: 2011-04-20
ZTE CORP
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Problems solved by technology

[0002]Traditional Ethernet technology cannot realize carrier-grade OAM (Operation Administration and Maintenance) and protection switching, and cannot realize synchronous clock transmission

Method used

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  • Method and device for realizing boundary clock in cascade base station
  • Method and device for realizing boundary clock in cascade base station
  • Method and device for realizing boundary clock in cascade base station

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] PTN is the development direction of the next-generation bearer network. The PTN network requires the clock synchronization of the entire network. When the bandwidth permits, base stations can be cascaded, and in the case of cascading, they can support boundary clocks in multicast mode, which can reduce the number of support boundaries. The use of clock switches.

[0022] Such as image 3 As shown, a method for implementing a boundary clock in a cascaded base station according to the present invention is shown, comprising the following steps: receiving a synchronization message (step 301) of...

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Abstract

The invention provides a method and device for realizing a boundary clock in a cascade base station, which is used for solving the problem that non-last stage base stations support a BC mode in a clock multicasting mode when the base stations are cascaded in a packet transport network (PTN) network. The method for realizing a boundary clock in a cascade base station comprises the following steps: receiving synchronous messages from a superior clock device; acquiring delay information from a superior clock device to the clock device in the synchronous messages, and determining the clock signal of the clock device in accordance with the delay information and the clock signal of the superior clock device; and sending messages carrying the timestamp of the clock device to a subordinate clock device. In addition, the invention also provides a device for realizing a boundary clock in the cascade base station.

Description

technical field [0001] The present invention relates to the field of communications, and more specifically, to a method and device for realizing boundary clocks in cascaded base stations. Background technique [0002] Traditional Ethernet technology cannot realize carrier-grade OAM (Operation Administration and Maintenance, operation management and maintenance) and protection switching, and cannot realize synchronous transmission of clocks. PTN (Package Transport Network, Packet Transport Network) network has become the current development trend, and China Mobile has selected PTN as the next-generation bearer network. In the PTN network, all intermediate devices must support the BC mode, which requires that when the base stations are cascaded, the non-final base stations must support the boundary clock. In order to reduce configuration, multicast is mostly used for clock synchronization. For the multicast method, this patent proposes a method and device for implementing a b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00H04L12/56H04L1/16
CPCH04J3/0673H04J3/0664
Inventor 胡广伍常伟
Owner ZTE CORP
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