Network-relay signaling for downlink transparent relay
View Patent ↗A method of providing downlink retransmissions to a mobile station in a wireless communication network, the wireless communication network comprising a base station communicatively linked to a transparent relay station, the method comprising: at the base station: receiving a request for a retransmission from the mobile station; scheduling resources for the retransmission; signalling scheduling information for the retransmission to the transparent relay station via a control link; at the transparent relay station: receiving said scheduling information for the retransmission on the control link; and sending the retransmission to the mobile station in a retransmit subframe on a retransmit frequency band.
1. A method of providing downlink retransmissions to a mobile station in a wireless communication network, said wireless communication network comprising a base station communicatively linked to a transparent relay station, said method comprising:
at said base station:
receiving a request for a retransmission from said mobile station;
scheduling resources for said retransmission;
signalling scheduling information for said retransmission to said transparent relay station via a control link; and
sending said retransmission to said mobile station in a retransmit frequency band and
at said transparent relay station:
receiving said scheduling information for said retransmission on said control link; and
sending said retransmission to said mobile station in a retransmit subframe on a retransmit frequency band concurrently with the base station.
2. The method of claim 1 , wherein the control link is a physical downlink control channel.
3. The method of claim 2 , wherein the physical downlink control channel uses a first format, the first format different from a second format used for signalling scheduling information to a mobile station.
4. The method of claim 2 , wherein the physical downlink control channel is transmitting in the first three symbols in a subframe.
5. The method of claim 1 , wherein the scheduling information is signaled in a first subframe and the retransmission is sent in a second subframe, the second subframe occurring one subframe after the first subframe.
6. The method of claim 1 , wherein the mobile station is a cell-edge mobile station.
7. The method of claim 1 , wherein the base station is a long term evolution eNB.
8. An system for providing downlink retransmissions to a mobile station in a wireless communication network, the system comprising:
a base station comprising a processor configured to:
receive a request for a retransmission from said mobile station,
schedule resources for said retransmission,
signal scheduling information for said retransmission to a transparent relay station via a control link, and
send said retransmission to said mobile station in a retransmit frequency band; and
said transparent relay station in communication with the base station and comprising a processor configured to:
receive said scheduling information for said retransmission on said control link; and
send said retransmission to said mobile station in a retransmit subframe on a retransmit frequency band concurrently with the base station.
9. The system of claim 8 , wherein the control link is a physical downlink control channel.
10. The system of claim 9 , wherein the physical downlink control channel uses a first format, the first format different from a second format used for signalling scheduling information to a mobile station.
11. The system of claim 9 , wherein the physical downlink control channel is transmitting in the first three symbols in a subframe.
12. The system of claim 8 , wherein the scheduling information is signalled in a first subframe and the retransmission is sent in a second subframe, the second subframe occurring one subframe after the first subframe.
13. The system of claim 8 , wherein the mobile station is a cell-edge mobile station.
14. The system of claim 8 , wherein the base station is a long term evolution eNB.