Superframe-based wireless relay method, node and network

A wireless relay and relay node technology, applied in the field of wireless communication, can solve the problems of unpredictable change mode and speed, system failure, system reliability and coverage effect, etc., so as to avoid the impact of channel capacity production, Effects of improving reception sensitivity and improving high availability

Inactive Publication Date: 2020-11-13
北京融讯信通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the relay network generally has a control node, which is used to control the selection method and routing method of the relay node. When the control node fails or leaves the network, the system will not operate normally.
Due to the random movement of relay nodes, the power-on and power-off of nodes at any time, the change of transmission power of wireless signaling devices, the mutual interference between wireless channels, and the influence of terrain, the network topology formed by wireless channels between terminals may occur at any time Changes, and the way and speed of changes are unpredictable, reducing the reliability and coverage of the system

Method used

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  • Superframe-based wireless relay method, node and network
  • Superframe-based wireless relay method, node and network
  • Superframe-based wireless relay method, node and network

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Embodiment 1

[0038] Such as figure 2As shown, each superframe is 60ms long, and each superframe includes 4 time slots, and each time slot is 15ms long. Among them, 4 time slots can generate 3 total hops, and the total hops can be adjusted by adjusting the number of time slots. The data frame is sent at the beginning of the time slot, and the wireless signal relay method of the present invention can be executed in the remaining time (Gap) of the time slot to judge whether to forward or process the data frame. Processing the data frame refers to reporting the data frame from the physical layer to the Mac layer, and processing the data frame by the Mac layer.

[0039] According to the number of times the data frame is sent, it is divided into the i+1th data frame, where i is the number of hops.

[0040] Slot 0 (ST0): The sending node sends the first data frame.

[0041] Time slot i (STi): the i-th level node forwards the i+1th data frame. For example, the node that correctly receives the...

Embodiment 2

[0044] image 3 shows a schematic diagram of a wireless signal relay network, Figure 4 A schematic diagram of source data transfer is shown.

[0045] The relay network includes a sending node and a relay node, the sending node is used to send the wireless signal of the data frame; the relay node is used to decode the received wireless signal at the physical layer, and according to the channel coding obtained by decoding information to detect or correct the decoding, and obtain a data frame, the control information of the data frame includes the target node, the number of forwarded hops, the total number of hops and channel coding information; if the relay node judges that the current node is the data frame The target node processes the data frame; if the relay node is not the target node of the data frame, and the data frame satisfies the forwarding condition, modify the number of forwarded hops, forward the data frame after encoding, and enter the In sleep mode, the forwar...

Embodiment 3

[0054] The control information also includes rate matching information, scrambling information, and cyclic redundancy check information (CRC).

[0055] Wherein, the sending node adjusts the frame length of the data frame according to the rate matching information, which is easy to adapt to frame length requirements of various systems.

[0056] The sending node establishes optimized information for the data frame, and the receiving node or relay node descrambles the scrambled information, so as to improve the robustness of data or network.

[0057] The sending node generates the information of the first cyclic redundancy check based on an algorithm, the relay node generates the information of the third cyclic redundancy check according to the algorithm, and checks the information of the first cyclic redundancy check and the information of the third cyclic redundancy check The information can be used to judge whether the decoding is correct, and the data frames that are decoded ...

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Abstract

The invention discloses a superframe-based wireless relay method, node and network, and the method comprises the steps: decoding a received wireless signal in a physical layer, and detecting or correcting the decoding according to the channel coding information obtained through decoding, thereby obtaining a data frame; judging whether the current node is matched with a target node of the data frame or not; if so, processing the data frame; if not, judging whether the data frame meets a forwarding condition, wherein the forwarding condition comprises that the forwarded hop count is smaller thanthe total hop count; if yes, modifying the forwarded hop count, forwarding the data frame after encoding, and enabling the current node to enter a sleep mode within the remaining time of the superframe. After forwarding or sending the data frame, the node enters a sleep mode, so that energy is saved on one hand, and reverse transmission of the data frame is prevented on the other hand, wherein the total hop count is used for controlling the life cycle of the data frame; the data frame is detected or corrected through the channel coding information, so that the high availability and the receiving sensitivity of the data frame are improved, and the influence of data frame retransmission on channel capacity production is avoided.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a superframe-based wireless relay method, node and network. Background technique [0002] Mobile communication systems can be divided into dedicated mobile communication systems and public communication systems according to the scope of their services. Public mobile communication is a mobile communication system that includes a wide range of systems, the most important of which is cellular Mobile communication system; and the dedicated mobile communication system was first developed from the walkie-talkie, and later the frequency of the walkie-talkie was concentrated for more users to share. [0003] The wireless communication network system of narrowband signals is a special mobile communication system, which is generally used in voice transmission. The contradiction between high data rate bandwidth and high reliability exists in wireless communication networks. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04H04L1/00
CPCH04L1/0002H04L1/0007H04L1/0022H04L1/0061H04W28/04Y02D30/70
Inventor 庄亮吴齐发卢立武朱殿才
Owner 北京融讯信通科技有限公司
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