China Mobile Communications Group Co., Ltd.

China Mobile Communication Co.,ltd Research Institute

China Mobile Communications Corporation

Liuyan Han

Lei Wang

Dong Wang

Chen Wang

Yang Zhao

Han Li

Enbo Zhou

Dechao Zhang

Yunbo Li

Qian Cai

Lirong Bai

A message transmission method, a message transmission device, a network side device and a storage medium are provided. The method includes: determining a PTP version of a sending port set by a network side device; sending a first PTP message that uses the PTP version of the sending port through the sending port.

Message transmission method, message transmission device, network side device and storage medium

Provided are an optical module, a management and control information processing method, and a communication system. The optical module includes: a clock recovery unit, an optical transmitting unit, an optical receiving unit, and a micro-control unit. The optical module also includes: a logic processing unit, which is configured to add first management and control information to first service information, the first service information being service information sent by the optical module to an optical module on the other side, and obtain second management and control information from second service information, the second service information being service information sent by the optical module on the other side to the optical module.

Optical module, management and control information processing method, and communication system

A synchronization information transmission method includes: receiving synchronization information sent by a preceding node; on the basis of synchronization accuracy information of a current node, updating intermediate node information in the synchronization information; and sending the updated synchronization information to a subsequent node.

Synchronization information transmission method, synchronization method, network node and storage medium

Disclosed is a time synchronization method and apparatus. The method includes: receiving a time synchronization message sent by an upstream device through a clock port; obtaining a message rate parameter in the time synchronization message; according to the message rate parameter, correcting a time synchronization message loss detection parameter of a slave clock port, wherein the time synchronization message loss detection parameter is used to detect whether the time synchronization message is lost; and according to a correction result, keeping clock synchronization with the upstream device.

Time synchronization method and apparatus

The present invention discloses a time synchronization method and a time synchronization device for a mobile communication system. When the time status of one type of time protocol is bad, a different type of time protocol having a better status can be automatically selected, thereby the system flexibility and the time information quality and reliability can be effectively enhanced. The time synchronization method for a mobile communication system may comprise: selecting respectively an optimal time source for each type of time protocol port of at least two types of time protocol ports; selecting a system optimal time source from optimal time sources for respective types of time protocol ports.

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Beijing, China

Liuyan Han