Wireless Terminal
There is provided a wireless terminal including: a frame allocating unit performing an allocation process on a frame to be transmitted to another wireless terminal; a first communication unit assigning a sequence number to the allocated frame and transmitting the frame to the another wireless terminal through a first channel or a first mode; a second communication unit assigning a sequence number to the allocated frame and transmitting the frame to the another wireless terminal through a second channel or a second mode, wherein the allocating unit allocates the frame to one of the first and second communication units; when changing the transmission source of the frame from the one to the other communication unit, a change notification frame including a transmission starting sequence number is transmitted to the another wireless terminal; and the frame allocating unit switches the allocation destination of the frame from the one to the other.
1. A wireless terminal, comprising:
frame allocating circuitry configured to perform an allocation process on data frames destined to another wireless terminal;
first communication circuitry configured to transmit a data frame destined to the other wireless terminal through a first channel, a receiver media access control (MAC) address of the data frame transmitted by the first communication circuitry being a first MAC address; and
second communication circuitry configured to transmit a data frame destined to the other wireless terminal through a second channel, a receiver MAC address of the data frame transmitted by the second communication circuitry being a second MAC address, the second MAC address being different from the first MAC address, wherein
each of the data frames is assigned a sequence number,
in the allocation process, the frame allocating circuitry allocates one or more of the data frames to be transmitted, to the first communication circuitry,
when a transmission channel to be used between the wireless terminal and the other wireless terminal is changed from the first channel to the second channel, a first notification notifying that the transmission channel is to be changed from the first channel to the second channel and a transmission starting sequence number are transmitted, wherein
the transmission starting sequence number is a sequence number of a data frame whose transmission is started by the second communication circuitry after the first notification, and is transmitted before the data frame assigned the transmission starting sequence number, and
the frame allocating circuitry switches an allocation destination of the data frames destined to the other wireless terminal from the first communication circuitry to the second communication circuitry.
2. The wireless terminal of claim 1 , wherein the first notification is transmitted by a change notification frame.
3. The wireless terminal of claim 1 , further comprising a first antenna, wherein the first communication circuitry and the second communication circuitry are configured to communicate via the first antenna.
4. The wireless terminal of claim 1 , further comprising a first antenna and a second antenna, wherein the first communication circuitry is configured to communicate via the first antenna and the second communication circuitry is configured to communicate via the second antenna.
5. The wireless terminal according to claim 1 , wherein the transmission starting sequence number is a sequence number which the second communication circuitry assigns to a data frame at a head of a transmission queue in the first communication circuitry.
6. The wireless terminal according to claim 5 , wherein the data frame at the head of the transmission queue is any one of a new data frame or a retransmitted data frame.
7. The wireless terminal according to claim 1 , wherein a frequency band of the first channel does not overlap with a frequency band of the second channel.
8. A wireless communication method, comprising:
performing an allocation process on data frames destined to another wireless terminal;
transmitting by a first communication circuitry a data frame destined to the other wireless terminal through a first channel, a receiver media access control (MAC) address of the data frame being a first MAC address; and
transmitting a data frame destined to the other wireless terminal through a second channel, a receiver MAC address of the data frame being a second MAC address, the second MAC address being different form the first MAC address,
wherein the method further includes:
assigning each of the data frames a sequence number,
allocating, in the allocation process, one or more of the data frames destined to the other wireless terminal to the first communication circuitry,
transmitting, when a transmission channel to be used between a wireless terminal and the other wireless terminal is changed from the first channel to the second channel, a first notification notifying that the transmission channel is to be changed from the first channel to the second channel and a transmission starting sequence number, wherein the transmission starting sequence number is a sequence number of a data frame whose transmission is started by a second communication circuitry after the first notification, and is transmitted before the data frame assigned the transmission starting sequence number, and
switching an allocation destination of the data frames destined to the other wireless terminal from the first communication circuitry to the second communication circuitry.
9. The wireless communication method of claim 8 , wherein the first notification is transmitted by a change notification frame.
10. The wireless communication method according to claim 8 , wherein communication by the first communication circuitry and the second communication circuitry are performed via a first antenna.
11. The wireless communication method according to claim 8 , wherein communication by the first communication circuitry is performed via a first antenna and communication by the second communication circuitry is performed via a second antenna.
12. The wireless communication method according to claim 8 , wherein the transmission starting sequence number is a sequence number which the second communication circuitry assigns to a data frame at a head of a transmission queue in the first communication circuitry.
13. The wireless communication method according to claim 12 , wherein the data frame at the head of the transmission queue is any one of a new data frame or a retransmitted data frame.
14. The wireless communication method according to claim 8 , wherein a frequency band of the first channel does not overlap with a frequency band of the second channel.
15. A wireless terminal communicating with another wireless terminal which switches a channel between a first channel and a second channel and performs reception through one of the first channel and the second channel, comprising:
frame allocating circuitry configured to perform an allocation process on data frames to be transmitted;
first communication circuitry configured to transmit a data frame through the first channel; and
second communication circuitry configured to transmit a data frame through the second channel, wherein
each of the data frames is assigned a sequence number,
in the allocation process, the frame allocating circuitry allocates one or more of the data frames to be transmitted, to the first communication circuitry,
when a transmission channel is changed from the first channel to the second channel, a first notification notifying that the transmission channel is to be changed from the first channel to the second channel and a transmission starting sequence number are transmitted to the other wireless terminal, wherein
the transmission starting sequence number is a sequence number of a data frame whose transmission is started by the second communication circuitry after the first notification, and is transmitted before the data frame assigned the transmission starting sequence number, and
the frame allocating circuitry switches an allocation destination from the first communication circuitry to the second communication circuitry and
the first notification causes the other wireless terminal to switch the channel to the second channel and wait for the data frame assigned the transmission starting sequence number.
16. The wireless terminal according to claim 15 , wherein a frequency band of the first channel does not overlap with a frequency band of the second channel.
17. A wireless communication method communicating with another wireless terminal which switches a channel between a first channel and a second channel and performs reception through one of the first channel and the second channel, comprising:
performing an allocation process on data frames to be transmitted;
transmitting by a first communication circuitry a data frame through the first channel; and
transmitting a data frame through the second channel,
wherein the method further includes:
assigning each of the data frames a sequence number,
allocating, in the allocation process, one or more of the data frames to be transmitted to the first communication circuitry,
transmitting, when a transmission channel is changed from the first channel to the second channel, a first notification notifying that the transmission channel is to be changed from the first channel to the second channel and a transmission starting sequence number to the other wireless terminal, wherein the transmission starting sequence number is a sequence number of a data frame whose transmission is started by a second communication circuitry after the first notification, and is transmitted before the data frame assigned the transmission starting sequence number, and
switching an allocation destination from the first communication circuitry to the second communication circuitry, and
the first notification causes the other wireless terminal to switch the channel to the second channel and wait for the data frame assigned the transmission starting sequence number.
18. The wireless communication method according to claim 17 , wherein a frequency band of the first channel does not overlap with a frequency band of the second channel.