METHOD AND APPARATUS FOR ALLOCATING RESOURCES FOR PERFORMING DEVICE-TO- DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

• US 20160295565A1
• Filed: 11/07/2014
• Published: 10/06/2016
• Est. Priority Date: 11/08/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Myoungseob, SEO, Hanbyul, LEE, Jihyun
• Granted Patent: US 9,603,127 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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: H04J 4/00 Combined time-division and frequency-division multiplex systems H04J13/00 takes precedence ; data transmission H04L5/26; telemetry G08C15/00
• CPC Class Codes: H04L 45/20 Hop count for routing purposes, e.g. TTL
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 40/32 for defining a routing cluster membership
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: H04W 92/16 Interfaces between hierarchically similar devices

Abstract

The present invention relates to a method and apparatus for allocating D2D resources using relay UE in a wireless communication system supporting D2D communication. The method may include receiving D2D resource allocation information related to a first resource set used in a first cluster from the head UE of the first cluster and transmitting the received D2D resource allocation information to head UE of a second cluster. The D2D resource allocation information includes at least one of D2D resource set configuration information indicative of a configuration of D2D resource sets used in D2D communication, D2D resource set use information indicative of a D2D resource set which is now used, and D2D resource set indication information indicative of a D2D resource set to be used in a next cluster. The D2D resource set is allocated for each cluster.

Claims

1. A method for allocating D2D resources using relay User Equipment (UE) in a wireless communication system supporting D2D communication, the method performed by the relay UE comprising:

receiving D2D resource allocation information related to a first resource set used in a first cluster from a first cluster head UE; and

transmitting the received D2D resource allocation information to a second cluster head UE,

wherein the D2D resource allocation information includes at least one of D2D resource set configuration information indicating a configuration of D2D resource sets used in D2D communication, D2D resource set use information indicating a D2D resource set which is currently used, or D2D resource set indication information indicating a D2D resource set to be used in a next cluster, and

wherein the D2D resource set is allocated for each cluster.

2. The method of claim 1, further comprising:

determining, by the second cluster head UE, a second resource set used in the second cluster based on the D2D resource allocation information transmitted by the relay UE.

3. The method of claim 1,

wherein the D2D resource allocation information further includes at least one of information of a cluster to which the relay UE belongs, an index of a cluster which has triggered a relay, an index of a cluster head, an ID of the relay UE, or a hopping counter information indicating hopping count.

4. The method of claim 1, further comprising:

performing at least one hopping operation in order to transmit the received D2D resource allocation information to the second cluster.

5. The method of claim 1,

wherein at least one of the first cluster or the second cluster is formed between adjacent UEs.

6. The method of claim 1,

wherein resource sets for D2D communication are allocated to the first cluster and the second cluster using a Time Division Multiplexing (TDM) method, and

wherein resources for D2D communication are allocated to UEs included in the first cluster and the second cluster using a Frequency Division Multiplexing (FDM) method.

7. The method of claim 1, further comprising:

sharing, by the first cluster header and the second cluster header, a plurality of resource set configuration information.

8. The method of claim 1, wherein the first cluster head UE sets a maximum hopping count for limiting a hopping count of the relay UE.

9. The method of claim 8, further comprising:

comparing, by the second cluster head UE, the hopping count with the set maximum hopping count when the maximum hopping count is set to be greater than 1,

wherein the hopping count indicates a count that the D2D resource allocation information has been relayed through a relay operation.

10. The method of claim 9,

wherein when, as a result of the comparison, the hopping count and a value obtained by subtracting 1 from the maximum hopping count are the same, the hopping count is maintained to be identical with the maximum hopping count and a relay operation is performed.

11. The method of claim 9,

wherein when, as a result of the comparison, the hopping count and a value obtained by subtracting 1 from the maximum hopping count are the same, the hopping count is reset to 0 and a relay operation is performed again.

12. The method of claim 9,

wherein when, as a result of the comparison, the hopping count and a value obtained by subtracting 1 from the maximum hopping count are the same, a relay operation is stopped.

13. The method of claim 2,

wherein the second cluster head UE updates the D2D resource allocation information based on information related to the determined second resource set.

14. The method of claim 1,

wherein the first resource set or the second resource set is not a resource set used in an eNB.

15. A method for allocating D2D resources using relay User Equipment (UE) in a wireless communication system supporting device-to-device communication, the method performed by a first cluster head UE comprising:

selecting a first resource set to be used in the first cluster; and

transmitting D2D resource set allocation information related to the first resource set to a second cluster head UE through relay UE,

wherein the D2D resource allocation information includes at least one of D2D resource set configuration information indicating a configuration of D2D resource sets used in D2D communication, D2D resource set use information indicating a D2D resource set which is currently used, or D2D resource set indication information indicating a D2D resource set to be used in a next cluster, and

wherein the D2D resource set is allocated for each cluster.

16. The method of claim 15, wherein the first cluster is formed between adjacent UEs.

17. A method for allocating D2D resources using relay User Equipment (UE) in a wireless communication system supporting device-to-device communication, the method performed by a cluster head UE comprising:

receiving D2D resource allocation information for selecting a resource set from a head UE of a previous cluster through relay UE; and

selecting a resource set based on the D2D resource allocation information,

wherein the D2D resource allocation information includes at least one of D2D resource set configuration information indicating a configuration of D2D resource sets used in D2D communication, D2D resource set use information indicating a D2D resource set which is currently used, or D2D resource set indication information indicating a D2D resource set to be used in a next cluster, and

wherein the D2D resource set is allocated for each cluster.

18. The method of claim 17, wherein the cluster is formed between adjacent UEs.

19. An apparatus for allocating D2D resources using relay User Equipment (UE) in a wireless communication system supporting D2D communication, the apparatus comprising:

a communication unit configured to transmit and receive signals in a wired and/or wireless manner; and

a control unit operatively connected to the communication unit,

wherein the control unit receives D2D resource allocation information related to a first resource set used in a first cluster from a first cluster head UE through the communication unit and transmits the received D2D resource allocation information to a second cluster head UE through the communication unit,

the D2D resource allocation information includes at least one of D2D resource set configuration information indicating a configuration of D2D resource sets used in D2D communication, D2D resource set use information indicating a D2D resource set which is currently used, or D2D resource set indication information indicating a D2D resource set to be used in a next cluster, and

wherein the D2D resource set is allocated for each cluster.