A low-latency optimization method for wireless mesh networks based on dynamic time slot allocation

Abstract

The present invention provides a low-delay optimization method for wireless Mesh networks based on dynamic time slot allocation. In the design of the Mac algorithm architecture, the broadcast order of the nodes is changed in the control frame, so that the nodes can update their own time slots in time according to the path information of the data stream. slot requirements to ensure that the forwarding node obtains the corresponding time slot during slot allocation; in the slot competition phase, by adjusting the order of slot application in the network and adding path information for relevant data flows, the time slot competition phase of network nodes is completed. The slot requirements are updated in real time, which improves the real-time performance of slot allocation for data streams. Through the timely update of network topology information changes during the broadcast period, nodes can sense and update network topology changes in a timely manner. Through the processing of key topology data, the overhead of control protocols is reduced, and the data transmission efficiency of the entire network is improved.

Description

technical field [0001] The invention relates to the technical field of wireless mesh Mesh networks, in particular to a low-time-delay optimization method for wireless Mesh networks based on dynamic time slot allocation. Background technique [0002] Wireless Mesh networks generally adopt carrier sense multiple access CSMA random resource scheduling architecture or time division multiple access TDMA resource scheduling architecture. Among them, although the CSMA architecture has strong network scalability, it cannot solve the problem of hidden terminals, and the collision probability increases with the increase of the number of network nodes, so it cannot provide the guarantee of end-to-end delay. The TDMA resource scheduling architecture divides channel resources into multiple time slots according to time for resource scheduling. The protocol design is relatively clear, and the problem of hidden terminals can be solved through the interaction of the control protocol. However...

AI Technical Summary

Problems solved by technology

[0011] In traditional wireless Mesh network architecture design, the network layer routing algorithm is often designed separately from the Mac layer to reduce the complexity of architecture design, but it does not take into account that the channel scheduling architecture based on dynamic time slot allocation is dependent on routing. , often causes the routing algorithm to not support the Mac layer enough, so there is still room for optimization in the design of the low-latency wireless mesh network architecture

Images