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Dynamic TDMA time slot allocation method based on node priority

A time slot allocation and priority technology, applied in electrical components, wireless communication, network planning, etc., can solve the problem of inability to adjust node access channels and achieve high channel resource utilization

Pending Publication Date: 2022-01-14
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In many application scenarios, different nodes have different channel access requirements, and the existing time slot allocation methods for dynamic TDMA cannot adjust the ability of nodes to access channels according to node characteristics

Method used

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  • Dynamic TDMA time slot allocation method based on node priority
  • Dynamic TDMA time slot allocation method based on node priority
  • Dynamic TDMA time slot allocation method based on node priority

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Experimental program
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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] A method for assigning dynamic TDMA time slots based on node priority, the specific steps are as follows:

[0038] (1) Divide a time frame into two parts, the control period and the business period, such as figure 1 shown;

[0039] (2) The control period consists of N control time slots, where N is the maximum number of nodes on the network at the same time. The business period is composed of M business time slots, and the value of M is greater than or equal to N;

[0040] (3) After the node joins the network, it occupies a control time slot in the control period, and it remains unchanged during the operation of the network.

[0041] (4) After the start of a time frame period, the node listens to the time slot request control packet sent by its neighbor nodes in the control time slot not occupied by it (see figure 2 ), Request Reply Control Packet...

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Abstract

The invention discloses a dynamic TDMA time slot allocation method based on node priorities, and relates to the field of wireless communication. In the method, a time frame is divided into two parts, namely a control time period and a service time period; a control time slot in the control time period is fixedly occupied, a service time slot in the service time period is dynamically acquired, and the node sends and receives a control packet in the control time period and sends and receives service data in the service time period; meanwhile, nodes in the network are divided into a high-priority node and a low-priority node, when a time slot application conflict occurs, the high-priority node can preferentially obtain a service time slot, and when no time slot is available for the high-priority node, the low-priority node can be required to release part of the service time slot; therefore, the high-priority node has higher service time slot acquisition capability.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a dynamic TDMA time slot allocation method based on node priority. Background technique [0002] According to the different ways of assigning time slots to users, TDMA can be divided into two types: dynamic time slot allocation and fixed time slot allocation. The flexibility of fixed time slot allocation is poor, and the channel utilization rate is low in many application scenarios. Therefore, the dynamic time slot allocation strategy is one of the key research directions of the current TDMA protocol. [0003] For the TDMA protocol that adopts a dynamic time slot allocation strategy, a time frame is divided into two or more parts, and the node completes the occupation of the time slot by interactively controlling the grouping in a specific period of time, and transmits business data in the time slot occupied by it . The dynamic TDMA protocol can dynamically adjust the occu...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W16/10H04W72/10
CPCH04W72/0446H04W16/10H04W72/20H04W72/56
Inventor 赵佳明王明杰郭肃丽唐志华马鹏飞梁仕杰
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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