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Synchronization device and method for a handheld communication device

A technology of handheld communication and synchronization equipment, which is applied in the field of communication, can solve the problems of system complexity, increase the complexity of intercom equipment, increase the price of intercom, etc., and achieve the effect of strong autonomy, lower price and lower dependence

Active Publication Date: 2019-03-15
北京天狼讯业信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because these two systems are more complicated, they will increase the complexity of the walkie-talkie and the cost of the equipment, thereby increasing the price of the walkie-talkie.

Method used

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  • Synchronization device and method for a handheld communication device
  • Synchronization device and method for a handheld communication device
  • Synchronization device and method for a handheld communication device

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Embodiment Construction

[0040] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] The synchronization device of the handheld communication device includes a captain beacon and a team member beacon in communication with the captain beacon.

[0042] That is, the present invention includes multiple (more than three) handheld communication devices, also called beacons. Wherein, the beacon used for initiating time slot synchronization is called the captain beacon. Beacons other than the captain's beacon are called team member beacons. The length of each slot, defined as T.

[0043] There are two synchronization methods for handheld communication devices:

[0044] The first time slot synchronization method: GPS method

[0045] Step a, the GPS satellite sends a rectangular square wave with a period of 2 seconds to the ground, wherein the time between the rising edge and the adjacent falling edge of the rectangul...

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PUM

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Abstract

The invention discloses a time slot synchronization method for handheld communication devices. The method comprises a team leader communication device and team member communication devices communicating with the team leader communication device. The method comprises a plurality of (more than three) communication devices, also called as beacons. The beacon for initiating time slot synchronization is called as a team lead beacon. The other beacons except the team lead beacon are called as team member beacons. The length of each time slot is defined as T. The time slot synchronization method forthe handheld communication devices comprises a first time slot synchronization method: a GPS method, and a second time slot synchronization method: a fixed data packet method.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a time slot synchronization method of a handheld communication device. Background technique [0002] Although the current cellular network coverage is relatively wide, there are still many places that are not covered in some remote areas, such as some mountainous areas and deserts; these areas that are not covered by the cellular network can communicate through satellite phones, but the price of satellite phones is high. relatively expensive. Based on the above factors, many team expeditions, security, police systems or companies use handheld walkie-talkies in wilderness construction projects. Analog walkie-talkies have poor voice quality, low bandwidth utilization, and cannot transmit positioning information, so they are gradually replaced by digital walkie-talkies. [0003] In the digital walkie-talkie system, multiple walkie-talkies communicate, and there are many comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0638
Inventor 王璐朱宏伟
Owner 北京天狼讯业信息技术有限公司