Communication method and communication device
There is provided a communication method for a coordinator communication device, including generating a first scheduling element to be used by a first communication device and a second scheduling element to be used by a second communication device; and transmitting the first and second scheduling elements to the first and second communication devices. The second scheduling element includes a second allocation indicating a time-frequency resource allocated to the second communication device. The first scheduling element includes a first allocation indicating a time-frequency resource allocated to the first communication device and optionally includes a first virtual allocation that is a duplicate of the second allocation. The first communication device performs communication in accordance with a first communication system using a first frequency band, and the second communication device performs communication in accordance with the first communication system or a second communication system using a second frequency band that includes the first frequency band.
1. A communication method for a personal basic service set Control Point/Access Point (PCP/AP) device, the communication method comprising:
generating a first scheduling element to be used by at least one first communication device that is a legacy communication device and a second scheduling element to be used by at least one second communication device that is a non-legacy communication device, the first scheduling element and the second scheduling element being included in one frame; and
transmitting the one frame to the at least one first communication device and to the at least one second communication device, wherein
the second scheduling element includes at least one second allocation field indicating information on allocation to the at least one second communication device, and
the first scheduling element includes at least one first allocation field indicating information on allocation to the at least one first communication device and includes at least one third allocation field indicating information on allocation to the at least one second communication device, and
wherein the information in the at least one second allocation field corresponds to a part of the information in the at least one third allocation field,
wherein the at least one first communication device performs communication in accordance with a first communication scheme using a first frequency band and decodes the first scheduling element and does not decode the second scheduling element, and
wherein the at least one second communication device performs communication in accordance with the first communication scheme or a second communication scheme using a second frequency band that includes the first frequency band and decodes the first and second scheduling elements.
2. The communication method according to claim 1 , wherein
the information indicated by the at least one second allocation field is used by the at least one second communication device for communication by using the second communication scheme.
3. The communication method according to claim 1 , wherein
the information indicated by the at least one first allocation field is used by the at least one first communication device or the at least one second communication device for communication by using the first communication scheme.
4. The communication method according to claim 1 , wherein
the first scheduling element includes the at least one of the third allocation field, the at least one of the third allocation field corresponding to a plurality of the second allocation fields.
5. The communication method according to claim 1 , wherein
the PCP/AP device generates a third scheduling element that includes the at least one first allocation field among the first allocation field and the third allocation field, and generates a fourth scheduling element that includes the at least one third allocation field among the first allocation field and the third allocation field.
6. The communication method according to claim 1 , wherein
the second scheduling element includes at least one fourth allocation field indicating information on allocation to the at least one first communication device, the information in the at least one fourth allocation field corresponds to a part of the information in the at least one first allocation field.
7. A communication method for a second communication device, the communication method comprising:
receiving a beacon that is transmitted from a personal basic service set Control Point/Access Point (PCP/AP) device and that includes a first scheduling element to be used by at least one first communication device that is a legacy communication device and a second scheduling element to be used by at least one second communication device that is a non-legacy communication device, the first scheduling element and the second scheduling element being included in one frame;
generating a third allocation field indicating information on allocation to the at least one second communication device;
adding the third allocation field to the first scheduling element; and
transmitting the first scheduling element to which the third allocation field is added and the second scheduling element to the at least one first communication device and to another second communication device other than the second communication device, wherein:
the first scheduling element includes a first allocation field indicating information on allocation to the at least one first communication device,
the second scheduling element includes a second allocation field indicating information on allocation to the at least one second communication device,
the at least one first communication device performs communication in accordance with a first communication scheme using a first frequency band and decodes the first scheduling element and does not decode the second scheduling element,
the at least one second communication device performs communication in accordance with the first communication scheme or a second communication scheme using a second frequency band that includes the first frequency band and decodes the first and second scheduling elements.
8. A personal basic service set Control Point/Access Point (PCP/AP) device comprising:
a generator that generates a first scheduling element to be used by at least one first communication device that is a legacy communication device and a second scheduling element to be used by at least one second communication device that is a non-legacy communication device, the first scheduling element and the second scheduling element being included in one frame; and
a transmitter that transmits the one frame to the at least one first communication device and to the at least one second communication device, wherein
the second scheduling element includes at least one second allocation field indicating information on allocation to the at least one second communication device, and
the first scheduling element includes at least one first allocation field indicating information on allocation to the at least one first communication device and includes at least one third allocation field indicating information on allocation to the at least one second communication device,
wherein the information in the at least one second allocation field corresponds to a part of the information in the at least one third allocation field,
the at least one first communication device performs communication in accordance with a first communication scheme using a first frequency band and decodes the first scheduling element and does not decode the second scheduling element, and
the at least one second communication device performs communication in accordance with the first communication scheme or a second communication scheme using a second frequency band that includes the first frequency band and decodes the first and second scheduling elements.
9. A communication device comprising:
a receiver that receives a beacon that is transmitted from a personal basic service set Control Point/Access Point (PCP/AP) device and that includes a first scheduling element to be used by at least one first communication device that is a legacy communication device and a second scheduling element to be used by the communication device that is a non-legacy communication device, the first scheduling element and the second scheduling element being included in one frame;
a generator that generates at least one third allocation field indicating information on allocation to at least one second communication device, and generates a new first scheduling element obtained by adding the third allocation to the first scheduling element; and
a transmitter that transmits, to the at least one first communication device and to another second communication device other than the communication device, the second scheduling element and the new first scheduling element, wherein
the new first scheduling element includes the at least one third allocation field, and a first allocation field indicating information on allocation to the at least one first communication device, and
the second scheduling element includes a second allocation field indicating information on allocation to the at least one second communication device,
wherein the at least one first communication device performs communication in accordance with a first communication scheme using a first frequency band and decodes the first scheduling element and does not decode the second scheduling element,
wherein the at least one second communication device performs communication in accordance with the first communication scheme or a second communication scheme using a second frequency band that includes the first frequency band and decodes the first and second scheduling elements.