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A kind of long-distance tdma mobile self-organizing network node synchronization access method and device

A mobile self-organization and network node technology, applied in the field of wireless communication, can solve the problem of network synchronization access, which has not been well solved, and does not consider the problems of long-distance networking of smart antennas, so as to overcome the small coverage and improve efficiency. and stability, the effect of solving the transmission distance

Active Publication Date: 2022-07-12
XI AN JIAOTONG UNIV
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Problems solved by technology

More importantly, the vast majority of mobile ad hoc networks do not consider the combination of smart antennas and TDMA access methods for long-distance networking, and the problem of synchronous access to the network has not been well resolved

Method used

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  • A kind of long-distance tdma mobile self-organizing network node synchronization access method and device
  • A kind of long-distance tdma mobile self-organizing network node synchronization access method and device
  • A kind of long-distance tdma mobile self-organizing network node synchronization access method and device

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Embodiment Construction

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] A long-distance TDMA mobile self-organizing network node synchronization access method proposed by the present invention includes the following steps:

[0037] (1) Communication frame structure design: such as figure 1 As shown, the time domain resources are divided by the superframe as the unit time element. A superframe is divided into N frames, and each frame is divided into M time slots. The length of a single time slot is determined by the length of the physical layer data packet. In the frame, TDMA is used to access the channel. In a superframe, the first frame is an access frame, which is used to send synchronous access control information to each node; the remaining N-1 frames are service frames, which are mainly used for data service transmission of each node.

[0038] Among them, the access frame can be divided into P access s...

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Abstract

A long-distance TDMA mobile self-organizing network node synchronization access method and device, the access method includes communication frame structure design, dual pilot signal design, use of smart antenna to complete the transmission and reception of special pilot signal, use of smart antenna to complete Send and receive synchronization access packets, coarse synchronization, fine synchronization and dynamic synchronization adjustment. The present invention also provides a device, a terminal and a computer-readable storage medium for implementing the access method. The present invention can be compatible and extend the system requirements of different scenarios. The dual pilot signal is designed, the optimal receiving sector of the smart antenna is determined by receiving the special pilot frequency, and then the optimal receiving sector is used to receive the synchronous access packet, which greatly improves the efficiency and stability of the synchronous access. Using smart antennas to complete the directional transmission of special pilot signals and synchronous access packets greatly improves the transmission range and solves problems such as the failure of standard nodes in traditional methods.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a method and device for synchronous access of long-distance TDMA mobile self-organizing network nodes. Background technique [0002] Mobile Ad Hoc Networks (MANET, Mobile Ad Hoc Networks) is a temporary multi-hop autonomous communication system including several nodes with transceiver functions. Time Division Multiple Access (TDMA) is a channel access commonly used in mobile ad hoc network systems. method. TDMA divides time into multiple time slots, a certain number of time slots form periodic frames, and then time slots are allocated to nodes in the network, and each node occupies a channel in its own time slot to send information. [0003] In order to realize the TDMA channel access mode, the time synchronization and network access of each node in the mobile ad hoc network is a very critical step in the whole system, and it is also the foundation and premise o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W56/00H04W48/16H04L27/26
CPCH04W72/0446H04W56/001H04W48/16H04L27/2663H04L27/2665H04L27/2675Y02D30/70
Inventor 穆鹏程翟晓彤张渭乐肖海涛王文杰
Owner XI AN JIAOTONG UNIV
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