Communication device, system and method for communication using feedback
Communication devices are provided that facilitate receiving information units and providing feedback to other communication devices.
1. A communication device,
wherein the communication device is configured to receive one or more information units from a plurality of other communication devices,
wherein the communication device is configured to receive a resource allocation message from a managing communication device,
wherein the resource allocation message defines an allocation of bit positions associated with an acknowledgement of information units received from the plurality of other communication devices in a combined acknowledgement information unit; and
wherein the communication device is configured to transmit a combined acknowledgement information unit in response to a reception of information units from a plurality of other communication devices using the allocation of bit positions defined in the resource allocation message.
2. The communication device according to claim 1 , wherein the communication device is configured to broadcast or multicast the combined acknowledgement information unit.
3. The communication device according to claim 2 , wherein the communication device is configured to broadcast the combined acknowledgement information unit to the other communication devices via a side link which does not involve a base station.
4. The communication device according to claim 1 , wherein the communication device is configured to set bits at bit positions associated with one or more other communication devices from which one or more information units were properly received to a first bit value and to set bits at bit positions associated with one or more other communication devices from which one or more information units were not properly received or from which no information units were received to a second bit value which is different from the first bit value.
5. The communication device according to claim 1 , wherein the communication device is configured to transmit a combined acknowledgement information unit for information units received from different other communication devices within a predetermined period of time.
6. The communication device according to claim 1 , wherein the resource allocation message also defines in which wireless resource unit the combined acknowledgement information unit is to be transmitted, and
wherein the communication device is configured to transmit the combined acknowledgement information unit in the wireless resource unit specified by the resource allocation message.
7. The communication device according to claim 1 , wherein the communication device is configured to evaluate a resource allocation message which is piggybacked on data.
8. A method for communication, wherein the method comprises
receiving, at a communication device, one or more information units from a plurality of other communication devices,
receiving a resource allocation message from a managing communication device,
wherein the resource allocation message defines an allocation of bit positions associated with an acknowledgement of information units received from the plurality of other communication devices in a combined acknowledgement information unit; and
transmitting a combined acknowledgement information unit in response to a reception of information units from a plurality of other communication using the allocation of bit positions defined in the resource allocation message.
9. A non-transitory digital storage medium having a computer program stored thereon to perform the method for communication, wherein the method comprises
receiving, at a communication device, one or more information units from a plurality of other communication devices,
receiving a resource allocation message from a managing communication device,
wherein the resource allocation message defines an allocation of bit positions associated with an acknowledgement of information units received from the plurality of other communication devices in a combined acknowledgement information unit; and
transmitting a combined acknowledgement information unit in response to a reception of information units from a plurality of other communication using the allocation of bit positions defined in the resource allocation message,
when said computer program is run by a computer.
10. A communication device,
wherein the communication device is configured to receive one or more information units from a plurality of other communication devices,
wherein the communication device is configured to receive a resource allocation message from a managing communication device,
wherein the resource allocation message defines an allocation of bit positions associated with an acknowledgement of information units received from the plurality of other communication devices in a combined acknowledgement information unit; and
wherein the communication device is configured to transmit a combined acknowledgement information unit in response to a reception of information units from a plurality of other communication devices using the allocation of bit positions defined in the resource allocation message,
to thereby signal whether the communication device has properly received the information units from the plurality of other communication devices or not.
11. The communication device according to claim 10 ,
wherein the communication device is configured to set bits at bit positions associated with one or more other communication devices from which one or more information units were properly received to a first bit value and to set bits at bit positions associated with one or more other communication devices from which one or more information units were not properly received or from which no information units were received to a second value which is different from the first value,
to thereby provide feedback information to the other communication devices from which it has received the information units.