Communication apparatus and communication method
[Object] To provide a communication apparatus and a communication method that enable reinforcement of reliability of multicast communication and effective utilization of wireless communication resources to be compatible. [Solution] Provided is a communication apparatus including: a communication unit configured to perform communication of a frame. The communication unit transmits a frequency allocation frame, which includes frequency allocation information that specifies a transmission frequency of a delivery acknowledgment response frame with respect to a multicast frame, and receives the delivery acknowledgment response frame that is transmitted in the transmission frequency specified by the frequency allocation information and is frequency-division multiplexed.
1. A communication apparatus comprising:
one or more circuits configured to perform communication of a frame,
wherein the one or more circuits are configured to
transmit a frequency allocation frame, which includes frequency allocation information that specifies a transmission frequency of a delivery acknowledgment response frame with respect to a multicast frame, and
receive the delivery acknowledgment response frame that is transmitted in the transmission frequency specified by the frequency allocation information and is frequency-division multiplexed, wherein the one or more circuits are configured to transmit a delivery acknowledgment request frame with respect to the delivery acknowledgment response frame using the transmission frequency specified by the frequency allocation information, the delivery acknowledgment request frame being transmitted to one or a subset of devices that is selected to reply with the delivery acknowledgement response frame, and
the delivery acknowledgment request frame is frequency-division multiplexed, wherein
the frequency allocation information includes information that specifies a bandwidth of the transmission frequency,
the bandwidth is different between at least some of destinations of the delivery acknowledgment request frame, and
a bandwidth used to transmit the delivery acknowledgment request frame in the same period is different from a bandwidth of a multicast frame.
2. The communication apparatus according to claim 1 , wherein the frequency allocation information includes information that specifies a center frequency of the transmission frequency.
3. The communication apparatus according to claim 2 , wherein the center frequency is different between destinations of the delivery acknowledgment request frame transmitted in the same period.
4. The communication apparatus according to claim 2 , wherein the center frequency is specified on the basis of at least one of identification information of a destination of the delivery acknowledgment request frame or time information of the communication apparatus.
5. The communication apparatus according to claim 2 , wherein the center frequency is different from a center frequency of a multicast frame.
6. The communication apparatus according to claim 1 , wherein the frequency allocation frame includes setting period information that specifies a period in which the transmission frequency specified by the frequency allocation information is to be set to a communication frequency.
7. The communication apparatus according to claim 1 , wherein the one or more circuits are configured to transmit a frequency allocation frame before transmitting the delivery acknowledgment request frame with respect to the delivery acknowledgment response frame.
8. The communication apparatus according to claim 7 , wherein the one or more circuits are configured to transmit the frequency allocation frame when a communication connection with a destination of the delivery acknowledgment request frame is established.
9. The communication apparatus according to claim 1 , wherein the delivery acknowledgment response frame is additionally time-division multiplexed on the basis of the number of transmission destinations of the delivery acknowledgment request frame and received.
10. A communication apparatus comprising:
one or more circuits configured to perform communication of a frame,
wherein the one or more circuits are further configured to
receive a frequency allocation frame, which includes frequency allocation information that specifies a transmission frequency of a delivery acknowledgment response frame with respect to a multicast frame, and
transmit the delivery acknowledgment response frame using the transmission frequency specified by the frequency allocation information, and
the delivery acknowledgment response frame is frequency-division multiplexed, wherein
the one or more circuits are configured to receive a delivery acknowledgment request frame with respect to the delivery acknowledgment response frame that is transmitted in the transmission frequency specified by the frequency allocation information, the delivery acknowledgement request frame being transmitted in response to a delivery acknowledgment request frame that selectively identifies the communication apparatus for replying with the delivery acknowledgment request frame, and
the delivery acknowledgment request frame is frequency-division multiplexed, wherein
the frequency allocation information includes information that specifies a bandwidth of the transmission frequency,
the bandwidth is different between at least some of destinations of the delivery acknowledgment request frame, and
a bandwidth used to transmit the delivery acknowledgment request frame in the same period is different from a bandwidth of a multicast frame.
11. The communication apparatus according to claim 10 , wherein
the one or more circuits are further configured to set a communication frequency of the communication apparatus to the transmission frequency specified by the frequency allocation information,
receives the delivery acknowledgment request frame with respect to the delivery acknowledgment response frame that is transmitted in the transmission frequency specified by the frequency allocation information and is frequency-division multiplexed.
12. The communication apparatus according to claim 11 , wherein the one or more circuits are further configured to perform the setting when the frequency allocation frame is received.
13. The communication apparatus according to claim 11 ,
wherein the one or more circuits are further configured to receive the multi cast frame, and
perform the setting on the basis of information regarding a start of a delivery acknowledgment period.
14. The communication apparatus according to claim 11 ,
wherein the frequency allocation frame includes setting period information that specifies a period in which a communication frequency is to be set as the transmission frequency specified by the frequency allocation information, and
the one or more circuits set a communication frequency of the communication apparatus back to a communication frequency before the setting after the period specified by the setting period information elapses.
15. A communication method performed by one or more circuits, the method comprising:
performing communication of a frame;
transmitting a frequency allocation frame, which includes frequency allocation information that specifies a transmission frequency of a delivery acknowledgment response frame with respect to a multicast frame;
receiving the delivery acknowledgment response frame that is transmitted in the transmission frequency specified by the frequency allocation information and is frequency-division multiplexed; and
transmitting a delivery acknowledgment request frame with respect to the delivery acknowledgment response frame using the transmission frequency specified by the frequency allocation information, wherein
the delivery acknowledgment request frame being transmitted to one or a subset of devices that is selected to reply with the delivery acknowledgement response frame,
the delivery acknowledgment request frame is frequency-division multiplexed, wherein
the frequency allocation information includes information that specifies a bandwidth of the transmission frequency,
the bandwidth is different between at least some of destinations of the delivery acknowledgment request frame, and
a bandwidth used to transmit the delivery acknowledgment request frame in the same period is different from a bandwidth of a multicast frame.
16. A communication method performed by one or more circuits of a communication apparatus, the method comprising:
performing communication of a frame;
receiving a frequency allocation frame, which includes frequency allocation information that specifies a transmission frequency of a delivery acknowledgment response frame with respect to a multicast frame; and
transmitting the delivery acknowledgment response frame using the transmission frequency specified by the frequency allocation information, and
receiving a delivery acknowledgment request frame with respect to the delivery acknowledgment response frame that is transmitted in the transmission frequency specified by the frequency allocation information, wherein
the delivery acknowledgement request frame being transmitted in response to a delivery acknowledgment request frame that selectively identifies the communication apparatus for replying with the delivery acknowledgment request frame, and
the delivery acknowledgment request frame is frequency-division multiplexed and the delivery acknowledgment response frame is frequency-division multiplexed, wherein
the frequency allocation information includes information that specifies a bandwidth of the transmission frequency,
the bandwidth is different between at least some of destinations of the delivery acknowledgment request frame, and
a bandwidth used to transmit the delivery acknowledgment request frame in the same period is different from a bandwidth of a multicast frame.