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A Multi-channel Wireless Network Scheduling Method Supporting Information Age Optimization

A wireless network and scheduling method technology, applied in network topology, wireless communication, climate sustainability, etc., can solve problems such as difficulty in fully reflecting the timeliness of data, reduce the average information age, reduce communication overhead, and meet real-time data requirements. The effect of sexual desire

Active Publication Date: 2022-04-12
CHONGQING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

It is difficult to fully reflect the timeliness of data by simply designing a scheduling method based on the transmission delay of data packets

Method used

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  • A Multi-channel Wireless Network Scheduling Method Supporting Information Age Optimization
  • A Multi-channel Wireless Network Scheduling Method Supporting Information Age Optimization
  • A Multi-channel Wireless Network Scheduling Method Supporting Information Age Optimization

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Effect test

Embodiment

[0056] Figure 4 Flowchart of scheduling method for multi-channel wireless network optimized to support information age. Such as Figure 4 As shown, it specifically includes the following steps:

[0057] V1: The scheduling process starts.

[0058] V2~V4: Initialize system parameters, calculate the expected value of information age and Lyapunov drift of each source node after successful scheduling.

[0059] V5~V6: Construct the bipartite graph between the target node and the channel, and retain the optimal Lyapunov drift edge of the information age expectation under each target node, and initialize the bipartite graph.

[0060] V7~V11: sequentially determine whether each target node has an augmentable path, and recursively determine whether other target nodes have edges satisfying L(x i )+L(y j )≥w(x i ,y j ), if there is an unmatched edge that satisfies the condition, update the matching edge; if not, then take all the target nodes x according to the interleaved tree fo...

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Abstract

The invention relates to a multi-channel wireless network scheduling method supporting information age optimization, and belongs to the technical field of wireless networks. In the scenario of multiple source nodes and multiple target nodes in a multi-channel wireless network, the method takes the average information age in the network as the optimization target, and schedules the links by slots. Transform the information age optimization problem into the optimization of Lyapunov drift of information age expectation, and convert the multi-channel conflict problem into a bipartite graph matching problem, and use the Kuhn-Munkres algorithm to obtain a conflict-free scheduling scheme in multi-channel wireless networks . The invention schedules multiple channels, improves the utilization rate of network resources, and optimizes the average information age of the network; at the same time, since the target node does not need to obtain the generation time of the data packet of the source node in advance, it also reduces the energy consumption caused by the interaction between nodes .

Description

technical field [0001] The invention belongs to the technical field of wireless network communication, and relates to a multi-channel wireless network scheduling method supporting information age optimization. Background technique [0002] In recent years, with the rapid development of wireless communication technology, wireless networks are widely used in fields with high real-time requirements such as intelligent transportation and industrial production. In the wireless real-time network using the time-slot communication mechanism, how to reasonably schedule the communication link by time-slot has become an important factor affecting the real-time performance of the network. It is difficult to fully reflect the timeliness of data by simply designing a scheduling method based on the transmission delay of data packets. Therefore, to measure the Age of Information (AoI) from the user's point of view, that is, the time elapsed between the generation time of the latest data pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W72/12H04W84/18
CPCH04W24/02H04W72/1263H04W84/18Y02D30/70
Inventor 王恒段思勰羊婧琪王平
Owner CHONGQING UNIV OF POSTS & TELECOMM
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