A kind of time synchronization method and device of self-organizing network

Abstract

Embodiments of the present invention provide a time synchronization method and device for an ad hoc network, which is applied to a base station in the ad hoc network, and obtains information about a reference base station in the ad hoc network and information about the base station itself; The reference base station is a base station that provides a reference time for time synchronization; according to the information of the reference base station and the information of the base station itself, each base station in the ad hoc network is graded to obtain the ad hoc The network topology of the network; according to the network topology, time synchronization information is exchanged with the upper-level base station, and time synchronization with the reference base station is performed using the time synchronization information exchanged, and the accuracy of the time synchronization Before meeting the time synchronization accuracy condition, the ad hoc network only transmits the time synchronization information. This solution can improve the accuracy of time synchronization.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a time synchronization method and device for an ad hoc network. Background technique [0002] An ad hoc network is a wireless network that is temporarily formed by several mobile base stations without relying on any existing fixed ground infrastructure to complete a task anytime and anywhere. The mobile base stations use their own equipment to communicate. Dynamic topology network. The base stations in the ad hoc network are temporarily set up, and the time between the base stations may not be synchronized. Therefore, it is necessary to synchronize the time of all the base stations to ensure the communication and positioning functions of the ad hoc network. [0003] In the related art, the transmission time slot of the communication-positioning signal can be occupied to transmit the time synchronization information, so as to realize the time synchronization of the self-or...

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Problems solved by technology

Moreover, in order to ensure the performance of communication and positioning services corresponding to communication-positioning signals, the time slot occupied by time synchronization information is relatively narrow, and the interval between adjacent time slots is relatively large

[0004] However, time synchronization requires multiple transmissions of time synchronization information. The above-mentioned characteristics of narrow time slots and large intervals between adjacent time slots make the transmission of time synchronization information need to go through a long time interval, resulting in network time The convergence speed of synchronization slows down, reducing the accuracy of time synchronization

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