A method for transmitting a data packet in a physical layer and an access point

Abstract

Embodiments of the invention disclose a method for transmitting a data packet in a physical layer and an access point. The method for transmitting a data packet in a physical layer comprises: an access point monitors a channel state and contends for a transmission channel; in the case that the access point has contended for the transmission channel, the access point sends a frame header of a physical protocol data unit(PPDU) to a local station over the contended transmission channel; and the access point waits for interval duration after sending the frame header of the PPDU, and sends a physical service data unit(PSDU) to the local station after the interval duration. The technical solution provided according to the embodiments of the invention can realize discontinuous transmission of the PPDU and the PSDU, such that it becomes possible to prevent frame headers of PPDUs from conflicting with one another in the case that each coordination AP simultaneously transmits the PSDU.

Description

technical field [0001] The invention relates to the communication field, in particular to a physical layer data packet transmission method and an access node. Background technique [0002] With the development of communication-related technologies, the Wireless Local Area Networks (WLAN, Wireless Local Area Networks) technology based on the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers) 802.11 standard has been widely used. Nowadays, the penetration rate of portable computers and smart phones is getting higher and higher, and these smart terminals basically support WLAN technology. At the same time, wireless mobile communication services have gradually shifted from voice and text services to multimedia services, and the demand for traffic is increasing. At present, WLAN technology is facing a good opportunity for great development. On the one hand, the existing networks of mobile operators are difficult to carry ...

AI Technical Summary

Problems solved by technology

However, since in the PPDU format defined by existing standards, the PPDU frame header and the physical layer service data unit (PSDU, Physical Service Data Unit) are continuous, therefore, if the PSDU is to be transmitted at the same time, the PPDU frame header will inevitably are transmitted at the same time, which will cause the collision of PPDU frame headers, so that the data sent by the AP cannot be received by the station normally

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