Data transmission method and system

Abstract

The invention discloses a data transmission method and system, and relates to the technical field of communication. The data transmission method comprises the steps: establishing N management messagequeues in each AP, wherein the N management message queues are used for caching management messages interacted with the N APs directly connected with the AP respectively; establishing a data message queue for caching downlink data messages for each station STA directly associated with the AP; enabling the AP located in the downlink direction to send the basic information of the STA mounted under the AP to the AP connected in the uplink direction; enabling the AP located in the uplink direction to establish a virtual data message queue for each STA mounted under the APs connected in the downlink direction, and allocate air interface duration for the data message queue and the virtual data message queue. According to the method, the priority of message management between the APs is improved,the air interface duration the same as that of the STA directly hung on the main AP is also distributed to the STAs associated with the sub APs, and the communication performance of all the STAs in the whole network is guaranteed.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and system. Background technique [0002] Due to the limited wireless coverage of a single access point (AP), in some scenarios, multiple APs are used for wireless mesh (Mesh) networking to expand the wireless network coverage. Wired connection network (i.e. the main router), the station (STAtion, STA) connects to the main AP wirelessly, and the sub-AP connects to the main router through one or more hops wirelessly (i.e. the sub-router). The sub-AP may be connected to multiple For wired or wireless devices, all data of the devices attached to the sub-router must interact with the main router through the air interface of the sub-AP, and frequent backhaul is also required between the sub-AP and the main AP. Message exchange. [0003] Since the IEEE802.11 protocol uses the carrier sense multiple access / collision avoidance (Carrier Sense Mu...

AI Technical Summary

Problems solved by technology

However, in this mechanism, the sub-AP is treated as an ordinary STA. Although multiple terminal devices are connected to the sub-AP, it will obtain the same air interface time slot as the ordinary STA, which will not only affect the connection between the sub-AP and the main AP. Interaction between Mesh networks reduces the stability of the Mesh network connection, and makes the performance of STAs connected to the sub-routes worse than that of the STAs connected to the main route. Especially, the more STAs connected to the main route, the performance of STAs connected to the sub-routes worse

Images