Method and apparatus for confirming validity of candidate cooperative device list for client cooperation in wireless communication system

• US 9,681,286 B2
• Filed: 01/12/2016
• Issued: 06/13/2017
• Est. Priority Date: 05/26/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Cho, Hee Jeong, Lee, Eun Jong
• Primary Examiner(s): Wong, Warner
• Application Number:
  US14/993,933
• Publication Number:
  US 20160135033A1
• Time in Patent Office: 518 Days
• CPC Class Codes: H04W 40/22 using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• CPC Class Codes: H04W 52/0203 in the radio access network or backbone network of wireless communication networks
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 76/38 triggered by timers
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Provided are a method and an apparatus for confirming the validity of a candidate cooperative device list for client cooperation in a wireless communication system. A base station searches for at least one candidate cooperation device for a source device, then an effective period timer, for an effective time command list for a list of candidate cooperation devices for a source device, is initiated, and a determination is made as to whether the list of candidate cooperation devices is valid. The base station and the source device are connected through a first system, and the base station and one recommended candidate cooperation device selected from the list of candidate cooperation devices are connected through a second system.

Claims

1. A method for performing, by a base station, cooperative communication in a wireless communication system, the method comprising:

receiving a list of at least one neighbor UE searched by a UE;

after receiving the list of at least one neighbor UE, starting a list valid period timer; and

restarting the list valid period timer when the list of at least one neighbor UE is updated before the list valid period timer expires.

2. The method of claim 1, wherein the list of at least one neighbor UE is valid before the list valid period timer expires.

3. The method of claim 1, further comprising receiving the updated list of at least one neighbor UE before the list valid period timer expires.

4. The method of claim 1, wherein the list of at least one neighbor UE is updated when at least one UE is added to the list of at least one neighbor UE or at least one UE is removed from the list of at least one neighbor UE.

5. The method of claim 1, wherein the base station and the UE is connected via a first system,

wherein the at least one neighbor UE and the UE is connected via a second system.

6. The method of claim 5, wherein the first system is one of institute of electrical and electronics engineers (IEEE) 802.16, IEEE 802.16m, IEEE 802.20, evolved-UMTS terrestrial radio access (E-UTRA), 3^rd generation partnership project (3GPP) long-term evolution (LTE), 3GPP LTE-A (advanced), or IEEE 802.11, and

the second system is one of IEEE 802.16, IEEE 802.16m, IEEE 802.20, E-UTRA, 3GPP LTE, 3GPP LTE-A, or IEEE 802.11.

7. The method of claim 1, wherein the UE corresponds a source device in the cooperative communication, and

the at least one neighbor UE corresponds to candidate cooperative device in the cooperative communication.

8. A method for performing, by a user equipment (UE), cooperative communication in a wireless communication system, the method comprising:

starting a list valid period timer when at least one neighbor UE is searched; and

restarting the list valid period timer when the searched result of at least one neighbor UE is updated before the list valid period timer expires.

9. The method of claim 8, further comprising transmitting a list including the updated searched result of at least one neighbor UE to a base station.

10. The method of claim 9, wherein the list valid period timer is restarted after transmitting the list to the base station.

11. The method of claim 9, wherein the list valid period timer is restarted before transmitting the list to the base station.

12. The method of claim 8, wherein the searched result of at least one neighbor UE is updated when at least one UE is additionally searched or at least one UE is no longer searched.

13. The method of claim 8, wherein a base station and the UE is connected via a first system,

wherein the at least one neighbor UE and the UE is connected via a second system.

14. The method of claim 13, wherein the first system is one of institute of electrical and electronics engineers (IEEE) 802.16, IEEE 802.16m, IEEE 802.20, evolved-UMTS terrestrial radio access (E-UTRA), 3^rd generation partnership project (3GPP) long-term evolution (LTE), 3GPP LTE-A (advanced), or IEEE 802.11, and

the second system is one of IEEE 802.16, IEEE 802.16m, IEEE 802.20, E-UTRA, 3GPP LTE, 3GPP LTE-A, or IEEE 802.11.

15. The method of claim 8, wherein the UE corresponds a source device in the cooperative communication, and

the at least one neighbor UE corresponds to candidate cooperative device in the cooperative communication.