Methods, systems and devices for wireless transmit/receive unit cooperation
A method for transmitting data using a two-phase cooperation that includes a first sharing phase and a second cooperative phase is provided. In an embodiment, a method for cooperative data transmission performed by a first WTRU is disclosed. The method includes receiving, by the first WTRU from an eNB, cooperative set configuration information including a cooperative set identification. In the sharing phase, the first WTRU may receive from the eNB, a resource assignment for a first data transmission. During the sharing phase, the first data transmission may be transmitted using resources indicated in the received resource assignment. A second data transmission may be received from a second WTRU during the sharing phase. On a condition the second data transmission is successfully received by the first WTRU, a third data transmission may be transmitted, in cooperation with the second WTRU, during the cooperative phase.
1. A first wireless transmit/receive unit (WTRU) configured for multiple phase cooperative data transmission, the first WTRU comprising:
a receiver configured to receive, by the first WTRU from an evolved Node B (eNB), cooperative set configuration information including a cooperating set specific radio network identifier (C-RNTI);
the receiver further configured to receive, by the first WTRU from the eNB, a resource assignment for a first data transmission corresponding to a sharing phase;
a transmitter configured to transmit the first data transmission during the sharing phase, using resources indicated in the received resource assignment and the received C-RNTI;
on a condition the first data transmission is successfully received by at least a second WTRU and the first data transmission is not successfully received by the eNB, the transmitter is configured to transmit a second data transmission, in cooperation with the second WTRU, during a cooperative transmission phase using a first redundancy version; and
on a condition the first data transmission is not successfully received by the second WTRU and not successfully received by the eNB, the transmitter is configured to transmit a third data transmission during the cooperative transmission phase using a second redundancy version;
wherein the first redundancy version and the second redundancy version are different redundancy versions.
2. The first WTRU of claim 1 , wherein the first data transmission is transmitted to the eNB.
3. The first WTRU of claim 1 , wherein the receiver is further configured to receive a fourth data transmission, from a third WTRU, during the sharing phase.
4. The first WTRU of claim 1 , further comprising:
the receiver is further configured to receive, from the eNB, a control message with an indication of the at least one determined time instances corresponding to the first data transmission.
5. The first WTRU of claim 1 , further comprising:
the receiver is further configured to receive, from a cooperating set master, a control message with an indication of at least one determined time instance of the first data transmission.
6. The first WTRU of claim 1 , further comprising:
the receiver is further configured to receive feedback information comprising an acknowledgement or negative acknowledgement corresponding to the first data transmission.
7. A first wireless transmit/receive unit (WTRU) configured for multiple phase cooperative data transmission, the first WTRU comprising:
a receiver configured to receive cooperative set configuration information including a cooperating set specific radio network identifier (C-RNTI);
the receiver further configured to receive a first data transmission, from a second WTRU, during a sharing phase, using the received C-RNTI and a first redundancy version; and
a transmitter configured to, on a condition the first data transmission is successfully received by the receiver and is not successfully received by an eNB, transmit a second data transmission, in cooperation with the second WTRU, during a cooperative transmission phase, using a second redundancy version;
wherein the first redundancy version and the second redundancy version are different redundancy versions.
8. The first WTRU of claim 7 , wherein the receiver is further configured to receive a resource assignment for the first data transmission.
9. The first WTRU of claim 7 , wherein the first data transmission is received in accordance with the received resource assignment.
10. The first WTRU of claim 7 , wherein the first data transmission is transmitted to the eNB.
11. The first WTRU of claim 7 , wherein the receiver is further configured to receive a third data transmission, from a third WTRU, during the sharing phase.
12. The first WTRU of claim 7 , further comprising:
the receiver is further configured to receive feedback information comprising an acknowledgement or negative acknowledgement corresponding to the first data transmission.
13. The first WTRU of claim 7 , further comprising:
the receiver is further configured to receive a control message with an indication of the at least one determined time instance corresponding to the first data transmission.
14. The first WTRU of claim 13 , wherein the receiver is further configured to receive the control message from a cooperating set master.
15. An evolved Node B (eNB) configured for multiple phase cooperative data transmission, the eNB comprising:
a transmitter configured to transmit cooperative set configuration information including a cooperating set specific radio network identifier (C-RNTI);
a receiver further configured to receive a first data transmission, from a first WTRU, during a sharing phase, using the transmitted C-RNTI and a first redundancy version; and
the receiver is further configured to, on a condition the first data transmission is not successfully received by the eNB but is successfully received by a second WTRU, receive a second data transmission, from the first WTRU and the second WTRU, during a cooperative transmission phase, using a second redundancy version;
wherein the first redundancy version and the second redundancy version are different redundancy versions.
16. The eNB of claim 15 , wherein the transmitter is further configured to transmit a resource assignment for the first data transmission.
17. The eNB of claim 15 , wherein the first data transmission is received in accordance with the received resource assignment.
18. The eNB of claim 15 , wherein the first data transmission is transmitted to the eNB.
19. The eNB of claim 15 , further comprising:
the transmitter is further configured to transmit a negative acknowledgement in response to unsuccessfully receiving the first data transmission.