Wireless LAN system
First Claim
1. A transmitter applied to a second radio communication system using a second frequency band wider than a first frequency band used in a first radio communication system, comprising:
- an occupation signal generation section for generating an occupation signal compatible with said first radio communication system and notifying said first radio communication system that said second radio communication system occupies a radio medium; and
a transmission section for performing communication in said second radio communication system after transmitting said occupation signal using every frequency in said second frequency band.
1 Assignment
0 Petitions
Accused Products
Abstract
A high-speed wireless LAN system capable of avoiding a collision of packets and maintaining the original transmission speed is provided. A transmitter is applied to an HT terminal using a second frequency band wider than a first frequency band used by a legacy terminal, in which an HT sequence is started after a legacy beacon as an occupation signal and a legacy CTS are transmitted using every frequency in the second frequency band. Due to this, an NAV is set at the legacy terminal and packets are no longer transmitted from the legacy terminal. As a result, a collision of packets is avoided and it becomes possible to perform communication between HT terminals at the original transmission speed.
-
Citations
16 Claims
-
1. A transmitter applied to a second radio communication system using a second frequency band wider than a first frequency band used in a first radio communication system, comprising:
-
an occupation signal generation section for generating an occupation signal compatible with said first radio communication system and notifying said first radio communication system that said second radio communication system occupies a radio medium; and
a transmission section for performing communication in said second radio communication system after transmitting said occupation signal using every frequency in said second frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification