| 摘要 |
The invention concerns a method for multiple access to a frequency band of a communication channel of a communication network with carrier sense and collision avoidance, the said frequency band being divided into a set of sub-bands, comprising:
at a source node: detection of the availability of the communication channel and transmission to a destination node of a request message for authorisation to send data on the communication channel (RTS NS0, RTS NS1, RTS NS2) sent over one or more sub-bands (SBi, SB1, SB0),at the destination node: detection of simultaneous request messages for authorisation to send data on the communication channel (RTS NS0, RTS NS1, RTS NS2) transmitted by a plurality of source nodes (NS0, NS1, NS2) over a plurality of sub-bands (SBi, SB1, SB0), and transmission of a message authorising the sending of data on the communication channel by at least one source node among the said plurality of source nodes (CTS NS0, CTS NS0&NS1). |
| 主权项 |
1. A method for multiple access to a frequency band of a communication channel of a communication network with carrier sense and collision avoidance, said frequency band being divided into a set of sub-bands of the communication channel, the method comprising at a source node:
detecting the availability of the communication channel; subsequent to detecting the availability of the communication channel, modifying a value of a backoff counter; and when the value of the backoff counter reaches a predetermined value, transmitting a destination node of a message requesting authorisation to send data on the communication channel, wherein said transmitting is performed on one or more sub-bands forming a sub-set of said set of sub-bands of the communication channel. |
