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
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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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