Clock synchronization method and system between LTE base stations for rail transportation industry
A technology of clock synchronization and rail transit, applied in the field of communication, can solve problems such as unusability and huge maintenance costs, and achieve the effects of improving efficiency, reducing costs, and saving external synchronous clocks
Active Publication Date: 2017-11-28
SHENZHEN MUNICIPAL DESIGN & RES INST
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Problems solved by technology
However, in the rail transit industry, the maintenance cost of using terminals for line inspection is huge, so this method cannot be used
Method used
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Embodiment 5
[0042] Based on Embodiment 5 of the invention, a clock synchronization system between LTE base stations in the rail transit industry for implementing the method of Embodiment 1 includes: a marking module, which is used to set synchronization tags for all LTE base stations, and the synchronization tags include synchronization source base stations and The base station to be synchronized; the configuration module is used to set synchronization configuration information for the LTE base station based on the network connection relationship of the LTE base station, and the synchronization configuration information includes the synchronization source information and synchronization information of the LTE base station; the synchronization module is used for based on preset The synchronization rule switches the synchronization label of the LTE base station, reads the synchronization configuration information based on the synchronization label and performs clock synchronization.
[0043]...
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The invention discloses a clock synchronization method and system between LTE base stations for the rail transportation industry. The method comprises the following steps: setting synchronization labels for all LTE base stations, wherein the synchronization label comprises a synchronization source base station and a to-be-synchronized base station; setting the synchronization configuration information for the LTE base station based on a network connection relation of the LTE base stations, wherein the synchronization configuration information comprises the synchronization source information of the LTE base station and the synchronization information; switching the synchronization label of the LTE base station based on the preset synchronization rule, reading the synchronization configuration information and executing the clock synchronization based on the synchronization label. The system is used for executing the corresponding method. The function conversion between the to-be-synchronized base station and the synchronization base station is realized through the conversion of the base station label, the external synchronization clock is saved by computing the clock offset of the broadcasted TDD-LTE sequence, the synchronization process is gradually performed along the network of the base station so as to realize the synchronization of the full base station; the cost of the synchronization clock can be lowered, and the efficiency is improved.
Description
technical field [0001] The invention relates to a clock synchronization method and system between LTE base stations in the rail transit industry, belonging to the communication field. Background technique [0002] In the rail transit industry, the vehicle-to-ground wireless communication system is mainly used to undertake the transmission of voice trunking dispatching services, ensure the communication of urban rail transit signal systems, and carry passenger information systems and closed-circuit television services. It plays an important role in improving subway operation efficiency, public safety management and improving passenger travel experience. With the emergence of LTE technology, it has become a consensus in the industry to use a unified LTE wireless communication network to achieve better transmission effects. In terms of deployment, LTE base stations are deployed along the track for wireless coverage. [0003] In order to suppress signal interference between ba...
Claims
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Login to View More IPC IPC(8): H04W56/00H04J3/06
CPCH04J3/0641H04W56/0015
Inventor 谢建良丁称发王刚黄雄文许华林汤素锋赵昊昱黄亮韩月李克刘秋生肖志春李保林
Owner SHENZHEN MUNICIPAL DESIGN & RES INST