METHOD FOR PERFORMING A COOPERATIVE OPERATION BETWEEN HETEROGENEOUS NETWORKS AND DEVICE FOR SAME

• US 20140141779A1
• Filed: 07/12/2012
• Published: 05/22/2014
• Est. Priority Date: 07/12/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yuk, Youngsoo, Kwak, Jinsam, Lee, Eunjong, Cho, Heejeong
• Granted Patent: US 9,392,535 B2
• Time in Patent Office: Days
• US Class Current: 455/434
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/0864 of different hierarchy levels, e.g. Master Evolved Node B [MeNB] or Secondary Evolved node B [SeNB]
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

The present invention relates to a method for performing a cooperative operation between heterogeneous networks and a device for same. A method for a first type base station to perform a cooperative operation between heterogeneous networks in a wireless communication system includes receiving a downlink synchronization channel from at least one second type base station; obtaining an identifier (ID) of the second type base station by using the received downlink synchronization channel; and transmitting at least one of a channel number and a bandwidth of a center frequency of the first type base station and the cell ID of the second type base station to a server. The first type base station and the second type base station use different wireless communication methods or wireless access methods.

Claims

1. A method of detecting a base station by a user equipment in a wireless communication system that performs a cooperative operation between heterogeneous networks, the method comprising:

receiving at least one interworking signal (IWS) from at least one first type base station through a transmission band of a second type base station;

acquiring cell identifier (ID) information from the received at least one IWS; and

scanning a base station, which uses the same wireless communication scheme as that of the at least one first type base station based on the acquired cell ID information,

wherein the first type base station and the second type base station use different wireless communication schemes or wireless access schemes from each other.

2. The method according to claim 1, further comprising reporting the result of scanning or the result of cell measurement, which is measured by the scanning, to the second type base station.

3. The method according to claim 1, wherein the cell ID corresponds to ID reserved for the first type base station.

4. The method according to claim 1, wherein the IWS is a synchronization channel (SCH) or a common reference signal (CRS).

5. The method according to claim 1, wherein the user equipment supports both a first wireless communication scheme used by the first type base station and a second wireless communication scheme used by the second type base station.

6. The method according to claim 1, wherein the first type base station is a cooperative-access point (C-AP) that uses a wireless local area network (WLAN) mode, and the second type base station is a cellular base station that uses a cellular scheme.

7. A method of performing a cooperation operation by a first type base station in a wireless communication system that performs a cooperative operation between heterogeneous networks, the method comprising:

receiving a downlink synchronization channel from at least one second type base station;

acquiring cell identifier (ID) of the second type base station by using the received downlink synchronization channel; and

transmitting cell ID of the second type base station and at least one of a channel number and a bandwidth of a center frequency of the first type base station to a server,

wherein the first type base station and the second type base station use different wireless communication schemes or wireless access schemes from each other.

8. The method according to claim 7, further comprising:

receiving a broadcast channel (BCH) from the at least one second type base station;

acquiring full base station ID (BSID) of the second type base station based on the BCH; and

transmitting the acquired full BSID to the server.

9. The method according to claim 7, further comprising the steps of:

receiving a common reference signal (CRS) from the at least one second type base station;

measuring strength of a reference signal by using the received CRS; and

reporting a value of the strength of the reference signal for a predetermined number of second type base stations in the order of the great strength of the measured reference signal.

10. The method according to claim 7, further comprising:

transmitting information of at least one another first type base station or location information of the first type base station to the server.

11. The method according to claim 7, further comprising:

acquiring uplink timing synchronization with the second type base station;

measuring timing advance (TA) between the first and second type base stations in accordance with the acquired synchronization; and

reporting the acquired timing advance information to the server.

12. The method according to claim 7, wherein the channel number of the center frequency of the first type base station is an E-UTRA Absolute Radio Frequency Channel Number (EARFCN).

13. The method according to claim 7, wherein the first type base station is a cooperative-access point (C-AP) that uses a wireless local area network (WLAN) mode, and the second type base station is a cellular base station that uses a cellular scheme.

14. A user equipment in a wireless communication system that performs a cooperative operation between heterogeneous networks, the user equipment comprising:

a receiver receiving at least one interworking signal (IWS) from at least one first type base station through a transmission band of a second type base station; and

a processor acquiring cell identifier (ID) information from the received at least one IWS and scanning a base station, which uses the same wireless communication mode as that of the at least one first type base station based on the acquired cell ID information,

wherein the first type base station and the second type base station use different wireless communication schemes or wireless access schemes from each other.

15. A first type base station of performing a cooperation operation in a wireless communication system that performs a cooperative operation between heterogeneous networks, the first type base station comprising:

a receiver receiving a downlink synchronization channel from at least one second type base station;

a processor acquiring cell identifier (ID) of the second type base station by using the received downlink synchronization channel; and

a transmitter transmitting cell ID of the second type base station and at least one of a channel number and a bandwidth of a center frequency of the first type base station to a server,

wherein the first type base station and the second type base station use different wireless communication schemes or wireless access schemes from each other.