Relay link control channel design
View Patent ↗A method for wireless communication is provided. The method comprises transmitting a relay downlink control information (R-DCI) block in a plurality of resource blocks.
1. An access node, comprising:
a processor configured to control a transmitter to semi-statically transmit to a relay node, via Radio Resource Control (RRC) signaling, an indication of a number of resource blocks (R) for a relay downlink control information (R-DCI) block, wherein the R-DCI block is transmitted using a number of resource blocks corresponding to R and a number of orthogonal frequency division multiplexing (OFDM) symbols, and
wherein the transmitter is further configured to transmit, to the relay node, a downlink grant using a relay identification (ID), on a physical downlink shared channel (PDSCH) resource block for relay data.
2. The access node of claim 1 , wherein the R-DCI is transmitted in fixed OFDM resource blocks.
3. The access node of claim 1 , wherein the access node is further configured to transmit relay data anywhere in the physical downlink shared channel (PDSCH).
4. A relay node, comprising:
a processor configured to control a receiver to semi-statically receive from an access node, via Radio Resource Control (RRC) signaling, an indication of a number of resource blocks (R) for a relay downlink control information (R-DCI) block, wherein the R-DCI block is transmitted using a number of resource blocks corresponding to R and a number of orthogonal frequency division multiplexing (OFDM) symbols,
wherein the receiver is further configured to receive, from the access node, a downlink grant using a relay identification (ID), on a physical downlink shared channel (PDSCH) resource block for relay data.
5. The relay node of claim 4 , wherein the R-DCI is transmitted in fixed orthogonal frequency division multiplexing (OFDM) resource blocks.
6. The relay node of claim 4 , wherein the R-DCI comprises a relay physical control format indicator channel (R-PCFICH).
7. The relay node of claim 6 , wherein the R-PCFICH is received in the first OFDM symbol of the R-DCI.
8. The relay node of claim 4 , wherein the R-DCI comprises at least one of a relay physical downlink control channel (R-PDCCH), a relay physical control format indicator channel (R-PCFICH), and a relay physical hybrid automatic repeat request indicator channel (P-PHICH).
9. A method of wireless communication implemented in an access node, the method comprising:
transmitting semi-statically to a relay node, via Radio Resource Control (RRC) signaling, an indication of a number of resource blocks (R) for a relay downlink control information (R-DCI) block;
transmitting the R-DCI block using a number of resource blocks corresponding to R and a number of orthogonal frequency division multiplexing (OFDM) symbols; and
transmitting, to the relay node, a downlink grant using a relay identification (ID), on a physical downlink shared channel (PDSCH) resource block for relay data.
10. The method of claim 9 , wherein the R-DCI block comprises a fixed number of orthogonal frequency division multiplexing (OFDM) symbols.
11. The method of claim 9 , wherein the R-DCI is transmitted in fixed OFDM resource blocks.
12. A method of wireless communication implemented in a relay node, the method comprising:
receiving semi-statically from an access node, via Radio Resource Control (RRC) signaling, an indication of a number of resource blocks (R) for a relay downlink control information (R-DCI) block, wherein the R-DCI is transmitted using a number of resource blocks corresponding to R and a number of orthogonal frequency division multiplexing (OFDM) symbols, and
wherein the relay node is configured to receive, from the access node, a downlink grant using a relay identification (ID), on a physical downlink shared channel (PDSCH) for relay data.
13. The method of claim 12 , wherein the receiving is based on a fixed length R-DCI block.
14. The method of claim 12 , wherein the R-DCI is transmitted in fixed orthogonal frequency division multiplexing (OFDM) resource blocks.
15. The method of claim 12 , wherein the number of OFDM symbols is conveyed in a relay physical control format indicator channel (R-PCFICH) contained in the first OFDM symbol of the R-DCI, where the number of OFDM symbols designates the number of OFDM symbols contained by the R-DCI block.
16. The access node of claim 1 , wherein the number of OFDM symbols is variable.
17. The access node of claim 1 , wherein the number of OFDM symbols is fixed.
18. The access node of claim 1 , wherein the R-DCI block begins at a fixed OFDM symbol.
19. The access node of claim 18 , wherein the fixed OFDM symbol is the fourth OFDM symbol.
20. The relay node of claim 4 , wherein the number of OFDM symbols is variable.
21. The relay node of claim 4 , wherein the number of OFDM symbols is fixed.
22. The relay node of claim 4 , wherein the R-DCI block begins at a fixed OFDM symbol.
23. The relay node of claim 22 , wherein the fixed OFDM symbol is the fourth OFDM symbol.
24. The method of claim 9 , wherein the number of OFDM symbols is variable.
25. The method of claim 9 , wherein the number of OFDM symbols is fixed.
26. The method of claim 9 , wherein the R-DCI block begins at a fixed OFDM symbol.
27. The method of claim 26 , wherein the fixed OFDM symbol is the fourth OFDM symbol.
28. The method of claim 12 , wherein the number of OFDM symbols is variable.
29. The method of claim 12 , wherein the number of OFDM symbols is fixed.
30. The method of claim 12 , wherein the R-DCI block begins at a fixed OFDM symbol.
31. The method of claim 30 , wherein the fixed OFDM symbol is the fourth OFDM symbol.