Method and apparatus for transmitting indication in wireless communication system

• US 9,788,254 B2
• Filed: 02/18/2014
• Issued: 10/10/2017
• Est. Priority Date: 02/18/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Kyungmin, Lee, Insun, Byun, Daewook, Xu, Jian
• Primary Examiner(s): Park, Jung
• Application Number:
  US14/765,520
• Publication Number:
  US 20150365874A1
• Time in Patent Office: 1,330 Days
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 36/0088 Scheduling hand-off measurements
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

A method and apparatus for transmitting an indication in a wireless communication system is provided. A user equipment (UE) receives an indication, which indicates whether a cell served by an eNodeB (eNB) is a normal cell or a split cell, from the eNB, and transmits the received indication to a serving eNB of the UE.

Claims

1. A method for transmitting, by a user equipment (UE), an indication in a wireless communication system, the method comprising:

receiving an indication, which indicates whether a cell served by an eNodeB (eNB) is a normal cell or a split cell, from the eNB;

if the received indication indicates that the cell served by the eNB is the normal cell, transmitting the received indication and a measurement report to a serving eNB of the UE; and

if the received indication indicates that the cell served by the eNB is the split cell, ignoring the received indication and not transmitting the measurement report to the serving eNB of the UE,

wherein the measurement report is a measurement result of the cell served by the eNB.

2. The method of claim 1, wherein the indication is broadcast by the eNB.

3. The method of claim 1, wherein the split cell is supported by an active antenna system (AAS).

4. The method of claim 1, wherein the indication further indicates whether the cell is a static cell or a temporary cell.

5. The method of claim 1, wherein the indication further indicates whether the cell is a non-UE-tracking cell or a UE-tracking cell.

6. A method for determining, by an eNodeB (eNB), a handover of a user equipment (UE) in a wireless communication system, the method comprising:

receiving an indication which indicates whether a neighbor cell, served by a neighbor eNB, is a normal cell or a split cell; and

determining whether or not to perform a handover of a UE, served by the eNB, to the neighbor cell based on the received indication,

wherein the determining comprises determining to perform the handover of the UE to the neighbor cell when the received indication indicates that the neighbor cell served by the neighbor eNB is the normal cell, and

wherein the determining comprises determining to not perform the handover of the UE to the neighbor cell when the received indication indicates that the neighbor cell served by the neighbor eNB is the split cell.

7. The method of claim 6, wherein the indication is received from the neighbor eNB via X2 interface.

8. The method of claim 6, wherein the indication is received from the UE.

9. The method of claim 6, wherein the split cell is supported by an active antenna system (AAS).

10. The method of claim 6, wherein the indication further indicates whether the cell is a static cell or a temporary cell.

11. The method of claim 6, wherein the indication further indicates whether the cell is a non-UE-tracking cell or a UE-tracking cell.

12. The method of claim 6, further comprising:

receiving measurement reports from the UE.

13. A user equipment (UE) in a wireless communication system, the UE comprising:

a radio frequency (RF) unit configured to transmit or receive a radio signal; and

a processor, coupled to the RF unit, that;

controls the RF unit to receive an indication, which indicates whether a cell served by an eNodeB (eNB) is a normal cell or a split cell, from the eNB,

if the received indication indicates that the cell served by the eNB is the normal cell, controls the RF unit to transmit the received indication and a measurement report to a serving eNB of the UE, and

if the received indication indicates that the cell served by the eNB is the split cell, ignores the received indication and controls the RF unit to not transmit the measurement report to the serving eNB of the UE,

wherein the measurement report is a measurement result of the cell served by the eNB.