Method, access point and site for wireless transmission

Abstract

An embodiment of the present invention provides a wireless transmission method, an access point, and a station. The method includes: providing a wireless transmission method, including: the access point sends a first message to the first station, and the first message includes The channel usage period allocated by the access point to the first station, and the first message is used to instruct the first station to send data to the relay station of the first station during the channel usage period; the access point receives from the relay station of the first station the data. In the embodiment of the present invention, the AP can send the allocated channel usage period to the STA, so that the STA can send data to other STAs during the channel usage period, and the other STA can send the data to the AP, so that other STAs can communicate with the AP normally. data transmission.

Description

technical field [0001] The embodiments of the present invention relate to the field of wireless communication, and more specifically, to a wireless transmission method, access point and station. Background technique [0002] At present, the Institute of Electrical and Electronics Engineers (IEEE) standard organization is developing the 802.11ah specification, and proposes that the coverage area of ​​the access point needs to cover one kilometer, which is equivalent to covering the access point supported by the existing 802.11 specification The distance of 100 meters has been expanded by 100 times, and one of the primary application scenarios proposed for the 802.11ah specification is sensor networks, for example, wireless sensor networks for forest fire detection. The access point coverage radius supported by the 802.11ah specification is 1 km, which is much larger than the 100-meter coverage range defined in 802.11a / b / g / n and other specifications. In an area with a radius ...

AI Technical Summary

Problems solved by technology

In an area with a radius of 1 km, in order to achieve effective detection, the number of 802.11ah sensors that need to be deployed may exceed 6,000, and the stations (Station, STA) used for sensor detection are usually powered by batteries, and due to Due to the number of deployments and deployment scenarios (such as mountainous forests), it is inconvenient for users to replace and maintain STA batteries

[0003] According to the existing WIFI specifications, for example, the 802.11 series of specifications, STAs working in the basic network mode communicate with the AP directly at the power negotiated with the access point (AccessPoint, AP) in the uplink and downlink, and the negotiated communication power is the same as The distance between the STA and the AP is directly related. Therefore, the STAs deployed in different locations within the coverage area of ​​the AP, which are far or near the AP, will consume different amounts of power in the process of communicating with the AP. Generally speaking, the same amount of data transmission tasks Under the premise that the STA far away from the AP consumes more power, in addition, due to the deployment of a certain STA itself (such as obstacles between the STA and the AP), the power consumption may also increase. In this way, due to power consumption Too fast, individual STAs with low battery may not be able to continue normal data transmission with the AP

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