Method for measuring to eliminate IDC interference in wireless communication system and device for same

• US 9,462,498 B2
• Filed: 10/05/2011
• Issued: 10/04/2016
• Est. Priority Date: 10/19/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Jaewook, Chun, Sungduck, Yi, Seungjune, Jung, Sunghoon, Lee, Youngdae, Park, Sungjun
• Primary Examiner(s): Wu, Jianye
• Application Number:
  US13/825,479
• Publication Number:
  US 20130176891A1
• Time in Patent Office: 1,826 Days
• Field of Search: 370/252, 370/317, 370/322, 370/329, 455/434, 455/88, 455/63, 455/67
• US Class Current: 1/1
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 36/0085 Hand-off measurements
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

The present invention discloses a method for a first communication module of a user equipment measuring for eliminating in-device coexistence (IDC) interference in a wireless communication system. More particularly, the present invention comprises the following steps: receiving a message from one or more second communication modules which coexists in the terminal; performing inter-frequency measurement based on the setting information related to measuring when the message indicates the beginning of the operation of the second communication module; and reporting to the base station the result of the inter-frequency measurement.

Claims

1. A method for performing measurement to eliminate In-Device Coexistence (IDC) interference by a first communication module of a user equipment in a wireless communication system, the method comprising:

receiving, by the first communication module, measurement related setup information from a base station,

wherein the measurement related setup information includes a threshold value related to a measured result of a serving cell;

measuring, by the first communication module, a serving frequency of the first communication module to obtain a frequency measured value;

only when the first communication module is in a state of driving and a message indicating that a driving start is received from one or more second communication modules which coexist in the user equipment, immediately performing, by the first communication module, an inter-frequency measurement without comparing the frequency measured value with the threshold value by ignoring the threshold value; and

when the first communication module is in the state of driving and the message indicating the driving start is not received from the one or more second communication modules;

comparing, by the first communication module, the frequency measured value and the threshold value to obtain a comparison result; and

performing, by the first communication module, the inter-frequency measurement, only when the comparison result indicates that the frequency measured value is less than or equal to the threshold value,

wherein the driving start corresponds to a power-on operation of one of the one or more second communication modules or a traffic transmission and reception operation of one of the one or more second communication modules, and

wherein the first communication module in the state of driving performs an uplink transmission or downlink reception.

2. The method according to claim 1, further comprising:

performing, by the first communication module, the inter-frequency measurement, when the message indicates a driving end of one of the one or more second communication modules and a measured channel quality is less than or equal to the threshold value.

3. The method according to claim 1, wherein the one or more second communication modules include at least one of a transmission and reception module for a WiFi system, a Bluetooth transmission and reception module, and a global positioning system (GPS) reception module.

4. The method according to claim 1, further comprising:

reporting a result of the inter-frequency measurement, when the result of the inter-frequency measurement satisfies a specific event.

5. A user equipment in a wireless communication system, the user equipment comprising:

a first communication module configured to transmit and receive a signal to and from a first communication system; and

one or more second communication modules configured to transmit and receive a signal to and from a second communication system,

wherein the first communication module receives measurement related setup information from a base station,

wherein the measurement related setup information includes a threshold value related to a measured result of a serving cell,

wherein the first communication module measures a serving frequency of the first communication module to obtain a frequency measured value,

wherein, only when the first communication module is in a state of driving and a message indicating a driving start is received from the one or more second communication modules which coexist in the user equipment, the first communication module performs an inter-frequency measurement immediately by ignoring the threshold value in order not to compare the frequency measured value with the threshold value,

wherein, when the first communication module is in the state of driving and the message indicating the driving start is not received from the one or more second communication modules;

the first communication module compares the frequency measured value and the threshold value to obtain a comparison result; and

the first communication module performs the inter-frequency measurement, only when the comparison result indicates that the frequency measured value is less than or equal to the threshold value,

wherein the driving start corresponds to a power-on operation of one of the one or more second communication modules or a traffic transmission and reception operation of one of the one or more second communication modules, and

wherein the first communication module in the state of driving performs an uplink transmission or downlink reception.

6. The user equipment according to claim 5, wherein, when the message indicates a driving end of one of the one or more second communication modules, the first communication module compares the frequency measured value of the serving frequency of the first communication module with the threshold value, and performs the inter-frequency measurement when the comparison result indicates that the frequency measured value is less than the threshold value.

7. The user equipment according to claim 5, wherein the one or more second communication modules include at least one of a transmission and reception module for a WiFi system, a Bluetooth transmission and reception module, and a global positioning system (GPS) reception module.

8. The user equipment according to claim 5, wherein the first communication module performs the inter-frequency measurement when the message indicates a driving end of one of the one or more second communication modules and that a measured channel quality is less than or equal to the threshold value.

9. The user equipment according to claim 5, wherein the first communication module reports a result of the inter-frequency measurement, when the result of the inter-frequency measurement satisfies a specific event.