METHOD FOR COMMUNICATING WITH RELAY STATION

• US 20100220645A1
• Filed: 11/12/2008
• Published: 09/02/2010
• Est. Priority Date: 11/21/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Dong Cheol, Kwak, Jin Sam, Noh, Min Seok, Han, Seung Hee, Moon, Sung Ho, Kwon, Yeong Hyeon, Lee, Hyun Woo
• Granted Patent: US 8,787,269 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

A method for communicating with a relay station is disclosed. The method for communicating with a relay station comprises transmitting resource allocation information of downlink traffic and uplink traffic from a base station to the relay; and transmitting the downlink traffic to the relay by encapsulating the downlink traffic in accordance with the resource allocation information and receiving encapsulated uplink traffic from the relay in accordance with the resource allocation information. It is possible to enable efficient communication through a relay using a minimum interface without deterioration of throughput even in the case that a base station does not know detailed attributes of a relay existing in a system. Also, it is possible to coordinate collision through a master relay in case of a system supporting multi-hop relays.

Claims

1. A method for communicating with a relay station, in which a base station allocates a resource of a relay to perform communication, the method comprising:

transmitting resource allocation information of downlink traffic and uplink traffic from the base station to the relay; and

transmitting the downlink traffic to the relay by encapsulating the downlink traffic in accordance with the resource allocation information and receiving encapsulated uplink traffic from the relay in accordance with the resource allocation information.

2. The method of claim 1, wherein the encapsulated downlink traffic includes control information, traffic information, and allocation information of the traffic information, which are to be transferred from the relay to mobile stations, within one traffic structure.

3. The method of claim 1, wherein the encapsulated uplink traffic includes control information, traffic information, and allocation information of the traffic information, which are received from mobile stations to the relay, within one traffic structure.

4. The method of claim 1, wherein the step of receiving encapsulated uplink traffic from the relay includes collecting handover information of one or more mobile stations and transmitting the handover information from the base station to the relay.

5. The method of claim 1, wherein the step of receiving encapsulated uplink traffic from the relay includes collecting paging information of one or more mobile stations and transmitting the paging information from the base station to the relay.

6. The method of claim 1, wherein the step of receiving encapsulated uplink traffic from the relay includes collecting control signals of one or more mobile stations and transmitting the control signals from the base station to the relay.

7. The method of claim 1, wherein the step of receiving encapsulated uplink traffic from the relay includes receiving at least one control signal of communication quality measurement value, scheduling request, handover request and ranging request measured by one or more mobile stations and collected by the relay.

8. A method for communicating with a relay station, in which a base station allocates a resource of a relay to perform communication, the method comprising:

allocating a dedicated resource for communication between a relay and a mobile station from the base station; and

transmitting information of the dedicated resource to each relay.

9. The method of claim 8, wherein the step of allocating a dedicated resource includes allocating OFDM symbols different from a resource allocated for system traffic as a dedicated resource for each relay.

10. The method of claim 8, wherein the step of transmitting information of the dedicated resource to each relay includes transmitting the information of the dedicated resource to a master relay which manages the dedicated resource.

11. A method for communicating with a relay station, in which a relay communicates with a base station, the method comprising:

receiving resource allocation information of downlink traffic and uplink traffic; and

receiving encapsulated downlink traffic from the base station in accordance with the resource allocation information and transferring the encapsulated downlink traffic to corresponding mobile stations, and transferring uplink traffic received from the mobile stations to the base station by encapsulating the uplink traffic in accordance with the resource allocation information.

12. The method of claim 11, wherein the encapsulated downlink traffic includes traffic information and allocation information of the traffic information, which are to be transferred from the relay to the mobile stations, within one traffic structure.

13. The method of claim 11, wherein the encapsulated uplink traffic includes traffic information and allocation information of the traffic information, which are received from mobile stations to the relay, within one traffic structure.

14. A method for communicating with a relay station, in which a relay performs communication using a resource allocated from a base station, the method comprising:

receiving information of a dedicated resource allocated for communication between a relay and a mobile station; and

transmitting and receiving traffic from the relay to mobile stations or another relay in accordance with the allocated dedicated resource.

15. The method of claim 14, wherein the step of receiving information of a dedicated resource includes allocating a resource from the relay to a plurality of mobile stations connected with the relay in accordance with the information of the dedicated resource.