SYSTEMS AND METHODS FOR DATA RELAY TRANSMISSION

• US 20110164536A1
• Filed: 10/28/2010
• Published: 07/07/2011
• Est. Priority Date: 01/05/2010
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Lee, Chien-Min, Lin, Tzu-Ming
• Granted Patent: US 9,300,393 B2
• Time in Patent Office: Days
• US Class Current: 370/259
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

A method for a base station to transmit data, the data to be relayed by a relay station to user equipment, the method including: encoding, based on an identification of the relay station or an identification of the user equipment, control information that indicates resource allocation for the relay station; and transmitting the control information to the relay station.

Claims

1. A method for a base station to transmit data, the data to be relayed by a relay station to user equipment, the method comprising:

encoding, based on an identification of the relay station or an identification of the user equipment, control information that indicates resource allocation for the relay station; and

transmitting the control information to the relay station.

2. The method of claim 1, wherein the base station transmits the control information to the relay station on a physical downlink control channel (PDCCH), the method further comprising:

transmitting the data to the relay station on a physical downlink shared channel (PDSCH).

3. The method of claim 1, further comprising:

encoding, based on the identification of the user equipment, control information that indicates resource allocation for the user equipment; and

transmitting to the user equipment the control information that indicates the resource allocation for the user equipment.

4. The method of claim 1, wherein the encoding further comprises:

encoding the control information based on a radio network temporary identifier (RNTI) of the relay station or an RNTI of the user equipment.

5. A method for a base station to transmit to a relay station control information for relaying data to user equipment, comprising:

transmitting to the relay station a specific indication message,

wherein the message includes control information that indicates resource allocation for the relay station and a parameter indicating that the control information is for use by the relay station.

6. The method of claim 5, further comprising:

including an identification of the user equipment in the message.

7. A method for a base station to transmit control information to user equipment and to a relay station for relaying data to the user equipment, comprising:

encoding control information that indicates resource allocation for the relay station based on a first number of control channel elements (CCEs); and

encoding control information that indicates resource allocation for the user equipment based on a second number of CCEs different from the first number.

8. A method for a base station to transmit control information to user equipment and to a relay station for relaying data to the user equipment, comprising:

scrambling, with an identification of the relay station, a first plurality of cyclic redundancy check (CRC) parity bits for control information that indicates resource allocation for the relay station; and

scrambling, with an identification of the user equipment, a second plurality of CRC parity bits for control information that indicates resource allocation for the user equipment.

9. The method of claim 8, further comprising scrambling the first plurality of CRC parity bits with the identification of the user equipment.

10. A method for a relay station to receive data from a base station and to relay the data to user equipment, comprising:

receiving, from the base station, control information that indicates resource allocation for the relay station, the control information being encoded based on an identification of the relay station or an identification of the user equipment; and

decoding the control information to determine allocated resources for the relay station.

11. The method of claim 10, further comprising:

receiving the data on the determined resources.

12. The method of claim 10, further comprising:

obtaining the identification of the user equipment through dedicated signaling from the base station, or by snooping messages exchanged between the base station and the user equipment.

13. The method of claim 10, wherein the relay station receives the control information on a physical downlink control channel (PDCCH), the method further comprising:

receiving the data from the base station on a physical downlink shared channel (PDSCH).

14. A method for a relay station to receive from a base station control information for relaying data to user equipment, comprising:

receiving from the base station a specific indication message,

wherein the message includes control information that indicates resource allocation for the relay station and a parameter indicating that the control information is for use by the relay station.

15. The method of claim 14, further comprising:

receiving an identification of the user equipment included in the message.

16. A method for a relay station to receive control information from a base station, wherein the base station transmits control information that indicates resource allocation for user equipment based on a first number of control channel elements (CCEs), the method comprising:

receiving from the base station control information that indicates resource allocation for the relay station; and

decoding the received control information based on a second number of CCEs different from the first number.

17. A method for a relay station to receive control information from a base station, wherein the base station scrambles, with an identification of user equipment, a first plurality of cyclic redundancy check (CRC) parity bits for control information that indicates resource allocation for the user equipment, the method comprising:

receiving from the base station control information that indicates resource allocation for the relay station; and

descrambling, with an identification of the relay station, a second plurality of CRC parity bits for the received control information.

18. The method of claim 17, further comprising:

descrambling, with the identification of the user equipment, the second plurality of CRC parity bits.

19. A base station to transmit data, the data to be relayed by a relay station to user equipment, the base station comprising:

a processor configured to encode, based on an identification of the relay station or an identification of the user equipment, control information that indicates resource allocation for the relay station; and

an antenna configured to transmit the control information to the relay station.

20. A relay station to receive data from a base station and to relay the data to user equipment, comprising:

an antenna configured to receive, from the base station, control information that indicates resource allocation for the relay station, the control information being encoded based on an identification of the relay station or an identification of the user equipment; and

a processor configured to decode the control information to determine allocated resources for the relay station.