Link Layer Error Control Method in Distributed Time Division Multiple Access Protocol
A time division multiple access and error control technology, applied in time division multiplexing systems, error prevention, multiplexing communication, etc., can solve the problems of low channel utilization, waste of channel resources, long waiting time, etc. The effect of high utilization, high throughput and high efficiency
Active Publication Date: 2020-06-16
XIDIAN UNIV
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The disadvantage of this method is that the sending node will wait for the response frame after sending a data frame. In the case of a long distance and slow baseband processing, the waiting time is long, and the channel is in an idle state at this time. low channel utilization
The disadvantage of this method is that this method opens up a dedicated response time slot. When no data is sent in the corresponding data time slot, channel resources will be wasted and the channel utilization rate is low; secondly, the response frame can only be sent in the corresponding response frame. Time slot transmission, unable to feedback error information to the sending node as soon as possible
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[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0042] Refer to attached figure 1 , to further describe in detail the specific steps of the present invention.
[0043] Step 1, system initialization.
[0044] Adopt the mode of closed-loop synchronization, each node to be connected to the network synchronizes its own local counter; the local counter refers to the counter used by each node to determine its own current time slot number, and the local counter increases after the time interval of each time slot. 1. The number of time slots in a superframe is incremented periodically. The structure of the superframe is as follows figure 2 As shown, a superframe is composed of M multiframes, and each multiframe is composed of L time slots.
[0045]Adopt the time division multiple access TDMA access mode, each node to be networked selects own broadcast time slot; At the beginning of the frame, select the first...
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The invention discloses a link layer error control method for a distributed time division multiple access protocol, and mainly solves the problem of link layer error control in the distributed time division multiple access protocol. According to the method, response information in received data is processed by an online node at a receiving time slot; the response information corresponding to a time slot number is updated; channels at different time are detected to determine distribution of the channel so as to complete multiplexing of sent responses of a plurality of cache queues and the channels; and data after package of the response information is sent by the online node at a broadcast time slot and a sending time slot to complete response to a plurality of sending nodes. According to the method, while the channel utilization rate is improved, the response efficiency of the online node is improved.
Description
technical field [0001] The invention belongs to the technical field of communication, and further relates to a link layer error control method in a distributed time division multiple access TDMA (Time Division Multiple Access) protocol in the technical field of wireless communication. The invention can be applied to the link error detection and data retransmission of user service data transmission in the distributed time division multiple access TDMA (Time Division Multiple Access) protocol. Background technique [0002] The mobile ad hoc network is a special wireless mobile communication network, which consists of a series of mobile nodes with wireless transceivers to form a multi-hop autonomous system. There is no central node in this network, and each node in the network has an equal status and can initiate and forward services. Therefore, it can meet the communication needs of field activities, disaster relief and battlefields, and is widely used in disaster relief work...
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IPC IPC(8): H04L1/16H04L1/18H04L5/00H04J3/16
CPCH04J3/1694H04L1/1607H04L1/1874H04L5/0055
Inventor 史琰陈元呈龙盛敏刘俊宇仲伟慧李小帅赵阳
Owner XIDIAN UNIV