Method and system for realizing terminal synchronization in hybrid self-organized network

Abstract

The invention discloses a method and system for realizing terminal synchronization in a hybrid self-organized network. The method comprises the following steps: a first terminal determines a reference terminal for adjusting the own reference time of the first terminal per se according to a received pilot signal; the time of receiving the pilot signal sent by the reference terminal is compared with the own initial reference time of the first terminal; and according to the compared result, the own reference time of the first terminal per se is adjusted. Thus, by adoption of the method and system disclosed by the invention, the own reference time of all terminals in the hybrid self-organized network is adjusted into a certain range, so that the own reference time of all terminals rapidly tends to be synchronous, and therefore the entire network synchronization of the hybrid self-organized network is rapidly realized.

Description

technical field [0001] The invention relates to the field of hybrid ad hoc networks, in particular to a method and system for realizing terminal synchronization in a hybrid ad hoc network. Background technique [0002] In an ad hoc network, some terminals have a universal time coordination (Universal Time Chiming, UTC) time service function, and another part of terminals do not have UTC and have no UTC time service function. An ad hoc network that may include both terminals with UTC timing and terminals without UTC timing is called a hybrid ad hoc network. Terminals with high-precision UTC timing functions can pre-determine the starting positions of superframes, subframes, and time slots. Therefore, terminals with UTC timing functions can directly establish a synchronization relationship. Currently, the Global Positioning System (Global Positioning System, GPS) The time accuracy can reach 0.1us, which can meet the requirements of high precision. Terminals without UTC timin...

AI Technical Summary

Problems solved by technology

In order to achieve network-wide synchronization and make the internal clocks of all terminals tend to be synchronized, terminals with late internal clocks can be synchronized to terminals with early internal clocks. This method of achieving network-wide synchronization is only a theoretical adjustment principle, and for adjustment There is no limit to the amplitude, and it is likely to bring strong interference signals to other terminals due to the excessive adjustment range of one terminal

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