RELAY STATION, BASE STATION, AND RADIO COMMUNICATION METHOD

• US 20120195252A1
• Filed: 04/13/2012
• Published: 08/02/2012
• Est. Priority Date: 10/27/2009
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: SUGA, Junichi
• Granted Patent: US 9,143,223 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04B 7/15528 Control of operation parameters of a relay station to exploit the physical medium

Abstract

In a radio communication system including a relay station and a base station, the relay station transfers data from each mobile station to the base station based on a correspondence selected according to a frame from among different correspondences between identification information for a mobile station and timing in a frame at which data from the mobile station is transmitted. The base station identifies the data from each mobile station included in the frame received from the relay station based on the correspondence selected according to the frame. This radio communication method can be applied to data transmission from the base station to the relay station.

Claims

1. A relay station for transferring data transmitted or received between a plurality of mobile stations and a base station, the relay station comprising:

a storage section which stores a table indicative of different correspondences between identification information for each mobile station and timing in a frame at which data from said each mobile station is transmitted; and

a transmission processing section which transfers data from each mobile station to the base station on a frame based on a correspondence in the table selected according to the frame.

2. The relay station according to claim 1, wherein the transmission processing section transfers data from two or more mobile stations on the same frame in order indicated in the selected correspondence.

3. The relay station according to claim 2, wherein the order in which the transmission processing section transfers the data from the two or more mobile stations is determined according to order in which the two or more mobile stations are registered in the table.

4. The relay station according to claim 1, wherein the correspondence is set according to units of retransmission control between the relay station and the base station.

5. The relay station according to claim 1, wherein when there is no data to be transferred for a mobile station indicated in the selected correspondence, the transmission processing section transmits header information which indicates that data size is zero to the base station at timing corresponding to the mobile station.

6. The relay station according to claim 1, wherein the transmission processing section transmits to the base station a bit string length of which corresponds to a number of mobile stations indicated in the selected correspondence and which indicates whether or not there is data to be transferred for each of the mobile stations.

7. The relay station according to claim 1, wherein:

a frame cycle in which each correspondence is applied is set in said each correspondence; and

the correspondence is selected based on the frame cycle.

8. The relay station according to claim 7, wherein the frame cycle is set at the time of a service flow being established between each mobile station and the base station.

9. The relay station according to claim 1, wherein:

an offset from a reference frame of a frame to which each correspondence is applied is set in said each correspondence; and

the correspondence is selected based on the offset.

10. The relay station according to claim 9, wherein the offset is set at the time of beginning to transmit or receive data in accordance with a service flow established between each mobile station and the base station.

11. The relay station according to claim 1, wherein whether or not each mobile station is registered in the table is determined according to a kind of a service at the time of a service flow being established between said each mobile station and the base station.

12. The relay station according to claim 1, wherein the transmission processing section transfers data from a mobile station registered in the table to the base station without adding the identification information indicative of the mobile station.

13. A relay station for transferring data transmitted or received between a plurality of mobile stations and a base station, the relay station comprising:

a storage section which stores a table indicative of different correspondences between identification information for each mobile station and timing in a frame at which data to said each mobile station is transmitted; and

a transmission processing section which transfers data in a frame received from the base station to each mobile station based on a correspondence in the table selected according to the frame.

14. A base station for transmitting data to or receiving data from a plurality of mobile stations via a relay station, the base station comprising:

a storage section which stores a table indicative of different correspondences between identification information for each mobile station and timing in a frame at which data from said each mobile station is transmitted; and

an identification section which identifies data from each mobile station included in a frame received from the relay station based on a correspondence in the table selected according to the frame.

15. A base station for transmitting data to or receiving data from a plurality of mobile stations via a relay station, the base station comprising:

a storage section which stores a table indicative of different correspondences between identification information for each mobile station and timing in a frame at which data for said each mobile station is transmitted; and

a transmission processing section which transmits data for each mobile station to the relay station based on a correspondence in the table selected according to a frame.