Apparatus and method for wireless communication
A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.
1. A wireless communication apparatus capable of communicating via a first frequency bandwidth and a second frequency bandwidth, comprising:
a transmitter to transmit, via the first frequency bandwidth, a first frame including information relating to the second frequency bandwidth, a center frequency of the second frequency bandwidth and a group identifier for communication via the second frequency bandwidth; and
a receiver to receive, via the first frequency bandwidth, a second frame for changing to the second frequency bandwidth, wherein the transmitter transmits, via the second frequency bandwidth, a third frame after the receiver receives the second frame,
wherein the group identifier is used for communication via the first frequency bandwidth and the second frequency bandwidth.
2. The apparatus according to claim 1 , wherein the receiver receives an association request frame which includes capabilities information for communication via at least one of the first frequency bandwidth and the second frequency bandwidth, and the transmitter transmits the third frame using the capabilities information for communication via the second frequency bandwidth.
3. The apparatus according to claim 2 , wherein the capabilities information includes a plurality of modulation and coding schemes.
4. The apparatus according to claim 2 , further comprising a memory to store a connection management table having the capabilities information, wherein the transmitter refers to the connection management table in connection with sending the third frame.
5. The apparatus according to claim 1 , wherein the first frequency bandwidth and the second frequency bandwidth include frequency ranges that partly overlap with each other.
6. The apparatus according to claim 1 , wherein the group identifier is a Basic Service Set Identifier (BSSID), the first frame is a beacon frame, the second frame is a management frame and the third frame is a data frame.
7. The apparatus according to claim 1 , further comprising an antenna to transmit a radio wave of the first frame.
8. The apparatus according to claim 1 , wherein the transmitter and the receiver include baseband circuitry and frequency conversion circuitry.
9. The apparatus according to claim 1 , further comprising:
a first queue for the first frequency bandwidth; and
a second queue for the second frequency bandwidth,
wherein the transmitter shifts the third frame stored in the first queue to the second queue after the receiver receives the second frame.
10. The apparatus according to claim 1 , wherein the first frequency bandwidth includes the second frequency bandwidth on frequency.
11. A wireless communication apparatus capable of communicating via a first frequency bandwidth and a second frequency bandwidth, comprising:
a receiver to receive, via the first frequency bandwidth, a first frame including information relating to the second frequency bandwidth, a center frequency of the second frequency bandwidth and a group identifier for communication via the second frequency bandwidth; and
a transmitter to transmit, via the first frequency bandwidth, a second frame to change to the second frequency bandwidth, wherein the transmitter transmits, via the second frequency bandwidth, a third frame after transmitting the second frame,
wherein the group identifier is used for communication via the first frequency bandwidth and the second frequency bandwidth.
12. The apparatus according to claim 11 , wherein the transmitter transmits an association request frame which includes information relating to capabilities information for communication via at least one of the first frequency bandwidth and the second frequency bandwidth.
13. The apparatus according to claim 11 , wherein the group identifier is a Basic Service Set Identifier (BSSID), the first frame is a beacon frame, the second frame is a management frame, and the third frame is a data frame.
14. The apparatus according to claim 11 , further comprising an antenna to transmit a radio wave of the second frame.
15. The apparatus according to claim 11 , wherein the transmitter and the receiver include baseband circuitry and frequency conversion circuitry.
16. The apparatus according to claim 11 , further comprising:
a first queue for the first frequency bandwidth; and
a second queue for the second frequency bandwidth,
wherein the transmitter shifts the third frame stored in the first queue to the second queue after transmitting the second frame.
17. The apparatus according to claim 11 , wherein the transmitter transmits the second frame when a channel usage rate of the second frequency bandwidth is lower than a channel usage rate of the first frequency bandwidth.
18. The apparatus according to claim 11 , wherein the first frequency bandwidth includes the second frequency bandwidth on frequency.
19. A wireless communication method for communicating via a first frequency bandwidth and a second frequency bandwidth, comprising:
sending, via the first frequency bandwidth, a first frame including information relating to the second frequency bandwidth, a center frequency of the second frequency bandwidth and a group identifier for communication via the second frequency bandwidth;
receiving, via the first frequency bandwidth, a second frame to change to the second frequency bandwidth; and
sending, via the second frequency bandwidth, a third frame after receiving the second frame,
wherein the group identifier is used for communication via the first frequency bandwidth and the second frequency bandwidth.
20. The method according to claim 19 , wherein the group identifier is a Basic Service Set Identifier (BSSID) and the first frame is a beacon frame.
21. The method according to claim 19 , wherein the first frequency bandwidth includes the second frequency bandwidth on frequency.
22. A wireless communication method for communicating via a first frequency bandwidth and a second frequency bandwidth, comprising:
receiving, via the first frequency bandwidth, a first frame including information relating to the second frequency bandwidth, a center frequency of the second frequency bandwidth and a group identifier for communication via the second frequency bandwidth;
sending, via the first frequency bandwidth, a second frame to change to the second frequency bandwidth; and
sending, via the second frequency bandwidth, a third frame after sending the second frame,
wherein the group identifier is used for communication via the first frequency bandwidth and the second frequency bandwidth.
23. The method according to claim 22 , wherein the group identifier is a Basic Service Set Identifier (BSSID) and the first frame is a beacon frame.
24. The method according to claim 22 , wherein the first frequency bandwidth includes the second frequency bandwidth on frequency.