Transmitter and receiver for multiple channel operation

5:

• The transmitter as claimed in claim 1, wherein
• the request packet further includes a unique code and/or a unique timing corresponding to the receiver;
• and
• the transmitting unit is configured to identify the receiver from which a response packet is received via at least one selected channel included in the candidate channel list in response to the request packet based on a code applied to the response packet and/or a timing of the response packet.

7:

• The transmitter as claimed in claim 1, wherein
• the transmitting unit and the receiving unit are configured to transmit and receive packets in compliance with the IEEE 802.11 standard;
• and/or
• the at least one channel in the candidate channel list is determined based on the channels as specified by the IEEE 802.11 standard.

10:

• A receiver for receiving data from a transmitter in a wireless local area network communication system, comprising:
• a receiving unit for receiving a request packet including a candidate channel list including at least one channel being available for transmission at the transmitter;
• a channel selection unit configured to select from the candidate channel list at least one selected channel being available for reception at the receiver;
• and
• a transmitting unit for transmitting a response packet via the at least one selected channel to the transmitter in response to the request packet;
• wherein the receiving unit is configured to receive a data packet from the transmitter via the at least one selected channel after transmitting the response packet.

14:

• The receiver as claimed in claim 10, wherein
• the request packet further includes a unique code and/or a unique timing corresponding to the receiver;
• and
• the transmitting unit is configured to apply the unique code to the response packet prior to transmitting the response packet and/or to control the transmitting unit to transmit the response packet with the received unique timing.

16:

• A circuitry for transmitting data to a receiver in a wireless local area network communication system, comprising:
• a candidate channel determination portion configured to determine a candidate channel list including at least one channel being available for transmission at the transmitter;
• a transmitting portion for transmitting a request packet including said candidate channel list;
• and
• a receiving portion for receiving at least one response packet via at least one selected channel included in the candidate channel list from at least one receiver in response to the request packet, said at least one selected channel being available for reception at the at least one receiver;
• wherein the transmitting portion is configured to transmit a data packet to the receiver via the at least one selected channel after receiving the response packet.

18:

• A method for transmitting data from a transmitter to a receiver in a wireless local area network communication system, comprising:
• determining a candidate channel list including at least one channel being available for transmission at the transmitter;
• transmitting a request packet including said candidate channel list;
• receiving at least one response packet via at least one selected channel included in the candidate channel list from at least one receiver in response to the request packet, said at least one selected channel being available for reception at the at least one receiver;
• and
• transmitting a data packet to the receiver via the at least one selected channel after receiving the response packet.

19:

• A method for receiving data at a receiver from a transmitter in a wireless local area network communication system, comprising:
• receiving a request packet including a candidate channel list including at least one channel being available for transmission at the transmitter;
• selecting from the candidate channel list at least one selected channel being available for reception at the receiver;
• transmitting a response packet via the at least one selected channel to the transmitter in response to the request packet;
• and
• receiving a data packet from the transmitter via the at least one selected channel after the transmitting the response packet.