Method of processing a data packet on transmission, a method of processing a data packet on reception, and associated devices and nodes

摘要

A method is provided for processing a data packet on reception, where the data packet is transmitted by a first node to a second node over a link of a wireless electronic communications network. The packet includes a header and payload data. The method includes a step of receiving the data packet in two stages, a first stage of receiving the header and a second stage of receiving the payload data. The first stage includes the following steps performed by the second node on receiving a header of the data packet: detecting in the received preamble an authentication preamble for authenticating the link; using the data packet authentication preamble to authenticate the link; and in the event of the authentication having a positive result, deciding to trigger the second stage of receiving the payload data from the data packet.

主权项

1. A processing method for processing a data packet on reception, said data packet being transmitted by a first node to a second node over a link of a wireless electronic communications network, said packet comprising a header and payload data, wherein said method comprises:
receiving the data packet in two stages, including a first stage of receiving the header, which comprises at least one physical layer header, and a second stage of receiving the payload data, the first stage comprising the following steps performed by the second node on receiving the header of said data packet: detecting in the received header an authentication preamble for authenticating the link, said detected authentication preamble being inserted in the physical layer header and having a value that is a function of at least one attribute shared by the first and second nodes; using the data packet authentication preamble to authenticate the link, comprising comparing the detected authentication preamble with a reference authentication preamble generated as a function of said at least one attribute; and in the event of the authentication having a positive result, as a function of the result of the comparison, deciding to trigger the second stage of receiving the payload data from the data packet.