Method of logging measurement result at handover failure in wireless communication system

• US 8,880,078 B2
• Filed: 06/25/2010
• Issued: 11/04/2014
• Est. Priority Date: 06/26/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Sunhee, Jung, Sunghoon, Yi, Seungjune, Chun, Sungduck, Park, Sungjun
• Primary Examiner(s): Prez-Gutirrez, Rafael
• Assistant Examiner(s): DONADO, FRANK E
• Application Number:
  US13/321,482
• Publication Number:
  US 20120064886A1
• Time in Patent Office: 1,593 Days
• US Class Current: 455/443
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 36/0094 Definition of hand-off measurement parameters

Abstract

Disclosed is related to a wireless communication system and a mobile terminal providing a wireless communication service and to a method by which a base station and a mobile terminal transmit and receive data in an evolved universal mobile telecommunications system (E-UMTS) evolved from universal mobile telecommunications system (UMTS), a long term evolution (LTE) system, or a LTE-advanced (LTE-A) system and more particularly, to a method of logging a measurement result at a handover failure.

Claims

1. A method of transmitting a measurement result performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving, from a network, a measurement configuration;

receiving, from the serving cell, a RRC connection reconfiguration message related to a handover, the RRC connection reconfiguration message comprising a predetermined timer value;

starting a T304 timer with a timer value set to the predetermined timer value;

determining a handover failure if a random access procedure is not completed until the T304 timer is expired;

storing handover failure information, if it is determined that the handover failure occurs; and

transmitting the handover failure information to a network,

wherein the handover failure information comprises

a measurement result of the serving cell based on measurements collected up to the moment of the occurrence of the handover failure, and

a measurement result of at least one neighbor cell based on measurement collected up to the moment of the occurrence of the handover failure.

2. The method of claim 1, wherein the measurement configuration is received in a RRC connected mode.

3. The method of claim 1, wherein the measurement configuration is a minimization driving test (MDT) configuration.

4. The method of claim 1, wherein the handover failure information further comprises location information for the at least one cell.

5. The method of claim 1, wherein the handover failure information further comprises at least one Primary Scrambling Code (PSC) and at least one global cell ID for the at least one cell.