WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, AND COMPUTER PROGRAM

摘要

Random access operation is performed under a communication environment in which a plurality of communication modes having different transmission rate coexist with small overhead. A high-grade communication station spoofs information of a packet length and a rate in a decoding portion so that a value of (packet length)/(rate) corresponds to a duration where the communication is hoped to be stopped. The other station receiving the spoofed information receives the rest of the packet with the designated rate during the interval designated by the value of (packet length)/(rate). In this case, the packet length and the rate are not those of actually transmitted packet so that this packet is discarded.

主权项

1. A method for communicating in a wireless communication system with a first communication station configured to operate according to a first communication method and a second communication station configured to operate according to both the first communication method and a second communication method, comprising:
transmitting from the second communication station a packet comprising a first portion including a first PHY header SIGNAL portion with information of a packet length and a transmission rate receivable according to the first communication method that modulated information according to a first signal point location that defines a first arrangement of signal points in a signal space, and a second portion including at least a part of a second PHY header SIGNAL portion that receivable according to the second communication method, said transmitting step including, modulating by using a modulation scheme that is a phase of a second signal point location, that defines a second arrangement of signal points in a signal space, rotated by 90 degrees relative to a phase of said first signal point location.