Frame structure for multi-hop relay in wireless communication systems
Implementations of systems and techniques for scheduling wireless transmission of data blocks between a base station (BS) and one or more relay stations (RSs) in a wireless relay communication network.
1. A method for transmitting information among base stations, relay stations, and subscriber stations in a wireless relay communication network, comprising:
using a frame structure to provide a downlink relay to transmit in parts of a downlink subframe of the frame structure, wherein the frame structure includes a base station zone comprising a base station downlink MAP at a beginning of the base station zone, the base station zone for the base station to perform downlink transmissions, followed by a relay station zone comprising a relay station zone comprising a downlink MAP at a beginning of the relay station zone, the relay station zone for the relay station to perform downlink transmissions.
2. The method as in claim 1 , comprising:
using the frame structure to provide an uplink relay allowing a relay station to transmit in parts of an uplink subframe within the frame structure.
3. The method as in claim 1 , comprising:
configuring the frame structure to set a Receive-to-Transmit Transition Time (RTG) of each relay station to meet a minimum time gap.
4. The method as in claim 3 , wherein the frame structure is applied to a downlink transmission only or an uplink transmission only.
5. The method as in claim 1 , wherein the frame structure includes the relay station downlink MAP at a beginning of a designated zone for the relay station.
6. The method as in claim 1 , wherein the frame structure includes the base station downlink MAP at a beginning of a designated downlink zone for the base station.
7. The method as in claim 6 , wherein the frame structure further includes a frame control header (FCH).
8. The method as in claim 1 , wherein the frame structure further includes a downlink midamble.
9. The method as in claim 1 , further including:
operating a base station to communicate with a subscriber station using the frame structure.
10. The method as in claim 1 , further including:
operating the relay station to communicate with a subscriber station using the frame structure.
11. A wireless relay communications system comprising a base station, a downlink superordinate relay station, a subordinate relay station and a subscriber station, wherein:
the base station is configured to use a frame structure to provide a downlink relay to transmit in parts of a downlink subframe of the frame structure,
wherein the frame structure includes a base station zone comprising a base station downlink MAP at a beginning of the base station zone, the base station zone for the base station to perform downlink transmissions, followed by a relay station zone comprising a relay station zone comprising a downlink MAP at a beginning of the relay station zone, the relay station zone for the relay station to perform downlink transmissions.
12. The wireless relay communications system as in claim 11 , wherein the frame structure to provide an uplink relay allowing a relay station to transmit in parts of an uplink subframe within the frame structure.
13. The wireless relay communications system as in claim 11 , wherein the base station configures the frame structure to set a Receive-to-Transmit Transition Time (RTG) of each relay station to meet a minimum time gap.
14. The wireless relay communications system as in claim 13 , wherein the frame structure is applied to a downlink transmission only or an uplink transmission only.
15. The wireless relay communications system as in claim 11 , wherein the frame structure includes the relay station downlink MAP at a beginning of a designated zone for the relay station.
16. The wireless relay communications system as in claim 11 , wherein the frame structure includes the base station downlink MAP at a beginning of a designated downlink zone for the base station.
17. The wireless relay communications system as in claim 16 , wherein the frame structure further includes a frame control header (FCH).
18. The wireless relay communications system as in claim 11 , wherein the frame structure further includes a downlink midamble.
19. The wireless relay communications system as in claim 11 , wherein the base station is further configured to communicate with a subscriber station using the frame structure.
20. The wireless relay communications system as in claim 11 , wherein the relay station is configured to communicate with a subscriber station using the frame structure.