APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM USING RELAY

• US 20110205951A1
• Filed: 09/29/2009
• Published: 08/25/2011
• Est. Priority Date: 09/29/2008
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Ko, Young Jo, Ahn, Jae Young, Kim, Jae Heung, Lee, Kyoung Seok, Lee, Heesoo
• Granted Patent: US 9,007,979 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: H04B 7/15507 Relay station based processing for cell extension or control of coverage area, network planning with network coordinated processing with regard to cell extension H04W16/26; network topologies using dedicated repeater stations H04W84/047; terminal devices adapted for relaying to or from an other terminal H04W88/04
• CPC Class Codes: H04B 7/15542 Selecting at relay station its transmit and receive resources selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04L 5/0042 intra-user or intra-terminal allocation
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0087 when data requirements change
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0088 Scheduling hand-off measurements
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

Disclosed are a data transmission/reception apparatus and method of a wireless communication system using a relay. The data transmission/reception apparatus of the relay sets a relay reception subframe (hereinafter, referred to as ‘relay-rx-sub-frame’), and reports, to a terminal within a cell coverage, that the set relay-rx-subframe is a Multicast Broadcast Single Frequency Network (MBSFN) sub-frame, so that a legacy terminal may be provided with services in a wireless communication system using the relay.

Claims

1. A data transmission/reception apparatus of a relay, comprising:

a subframe setting unit to set a relay reception subframe (hereinafter, referred to as ‘

relay-rx-subframe’

);

a reporting unit to report, to a terminal, that the set relay-rx-subframe is a Multicast Broadcast Single Frequency Network (MBSFN) subframe; and

a transmission/reception unit to transmit a cell-specific reference signal or a control signal to the terminal during a predetermined interval of the relay-rx-subframe when a current subframe is the relay-rx-subframe, and to receive a base station signal from a base station during a remaining interval of the relay-rx-subframe.

2. The data transmission/reception apparatus of claim 1, wherein the subframe setting unit determines the relay-rx-subframe, and reports, to the base station, information about the determined relay-rx-subframe.

3. The data transmission/reception apparatus of claim 1, wherein the subframe setting unit reports, to the base station, information about a candidate subframe for the relay-rx-subframe or information about a non-candidate subframe to be unselected as the relay-rx-subframe.

4. The data transmission/reception apparatus of claim 1, the subframe setting unit transmits, to neighboring base stations or neighboring relays, information about subframes set for a link (eNB-R) transmitting data from the base station to the relay, or information about subframes set for a link (R-eNB) transmitting data from the relay to the base station.

5. The data transmission/reception apparatus of claim 1, wherein the subframe setting unit sets the relay-rx-subframe in a higher priority order depending on a predetermined priority of the subframe.

6. The data transmission/reception apparatus of claim 1, wherein the transmission/reception unit does not transmit the cell-specific reference signal and the control signal when a magnitude of the predetermined period of time is zero.

7. The data transmission/reception apparatus of claim 1, wherein the reporting unit either reports, to the terminal, MBSFN subframe information of a neighboring cell, or reports, to the terminal, the MBSFN subframe information of the neighboring cell together with identification information of the neighboring cell.

8. The data transmission/reception apparatus of claim 1, wherein the reporting unit reports, to the terminal, at least one of blank subframe information of the relay, blank subframe information of a neighboring cell, and blank subframe information of the neighboring cell including identification information of the neighboring cell.

9. A terminal being does not consider a blank subframe as a valid subframe for estimating a Channel Quality Indicator (CQI) when estimating the CQI.

10. A data transmission/reception apparatus of a base station, comprising:

a subframe setting unit to determine a relay-rx-subframe to report, to a relay, information about the determined relay-rx-subframe, or to receive, from the relay, a report of the information about the relay-rx-subframe determined in the relay; and

a transmission unit to prevent data from being transmitted to the relay during a predetermined period of time when a current subframe is the relay-rx-subframe, and to transmit a base station transmission signal to the relay during a remaining period of time.

11. The data transmission/reception apparatus of claim 10, wherein the subframe setting unit reports, to the relay, information about a candidate subframe for the relay-rx-subframe or information about a non-candidate subframe to be unselected as the relay-rx-subframe.

12. The data transmission/reception apparatus of claim 10, wherein the subframe setting unit transmits, to neighboring base stations or neighboring relays, information about subframes set for a link (eNB-R) transmitting data from the base station to the relay, or information about subframes set for a link (R-eNB) transmitting data from the relay to the base station.

13. The data transmission/reception apparatus of claim 10, wherein the subframe setting unit sets the relay-rx-subframe in a higher priority order depending on a predetermined priority of the subframe.

14. The data transmission/reception apparatus of claim 10, further comprising:

a reporting unit to either report, to the terminal, information about an MBSFN subframe of a neighboring cell, or to report, to the terminal, the information about the MBSFN subframe of the neighboring cell, together with identification information of the neighboring cell.

15. The data transmission/reception apparatus of claim 10, further comprising:

a reporting unit to either report, to the terminal, blank subframe information of a neighboring cell, or to report, to the terminal, blank subframe information of a neighboring cell together with identification information of the neighboring cell.

16. A data transmission/reception method of a relay, comprising:

setting a relay-rx-subframe;

reporting, to a terminal, that the set relay-rx-subframe is an MBSFN subframe;

transmitting a cell specific reference signal or a control signal to the terminal during a predetermined interval of the relay-rx-subframe when a current subframe is the relay-rx-subframe; and

receiving a base station signal from a base station during a remaining interval of the relay-rx-subframe.

17. The data transmission/reception method of claim 16, wherein the setting performs any one of receiving relay-rx-subframe information determined by the base station to set the relay-rx-subframe, determining the relay-rx-subframe in the relay and transmits the relay-rx-subframe information to the base station to set the relay-rx-subframe, and determining the relay-rx-subframe through a co-operation between the base station and the relay to set the relay-rx-subframe.

18. A data transmission/reception method of a base station, comprising:

setting a relay-rx-subframe;

and

preventing data from being transmitted to a relay during a predetermined interval of the relay-rx-subframe, and transmitting the data to a relay during a remaining interval of the relay-rx-subframe when a current subframe is the relay-rx-subframe.

19. The data transmission/reception method of claim 18, wherein the setting of the relay-rx-subframe performs any one of receiving relay-rx-subframe information determined by the relay to set the relay-rx-subframe, determining the relay-rx-subframe in the base station and transmitting the relay-rx-subframe information to the relay to set the relay-rx-subframe, and determining the relay-rx-subframe through a cooperation between the base station and the relay to set the relay-rx-subframe.