# US 2018/0324894 A1 · Apparatus and method for controlling in-device coexistence interference in wireless communication system

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- Number: US 2018/0324894 A1
- Document ID: US20180324894A1
- Status: Published application
- Kind: A1
- Application number: 16/037,067
- Filed: 2018-07-17
- Published: 2018-11-08
- Earliest claimed: 2012-03-19
- Assignees: Goldpeak Innovations Inc
- Applicants: Goldpeak Innovations Inc
- Inventors: Jae Hyun AHN; Myung Cheul JUNG; Kang Suk HUH; Ki Bum KWON
- Web page: https://patentgrep.com/patent/US20180324894A1

## CPC

- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04J 3/1694: {Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers (Passive Optical Networks H04Q11/0062)}
- H04W 48/06: based on traffic conditions
- H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame}
- H04W 52/0238: {where the received signal is an unwanted signal, e.g. interference or idle signal}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/541: using the level of interference
- H04W 36/04: Reselecting a cell layer in multi-layered cells
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04W 74/0838: using contention-free random access [CFRA]
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A method and an apparatus for controlling in-device coexistence interference (IDC) in a wireless communication system are provided. The present invention comprises transmitting IDC indication information including an unusable frequency band that is a frequency band in which performing communication is difficult because of IDC interference to a Base Station (BS), receiving Radio Resource Control (RRC) connection reconfiguration including IDC Discontinuous Reception (DRX) configuration reconfiguring DRX relating the unusable frequency band based on the IDC indication information from the BS and performing autonomously denial of Industrial Scientific Medical (ISM) transmission in the unusable frequency band by reconfiguring DRX based on the IDC DRX configuration.

## Claims

### Claim 1

A method for controlling interference in a Mobile Station (MS), comprising:
receiving, from a Base Station (BS), Radio Resource Control (RRC) connection reconfiguration including In-device coexistence (IDC) Discontinuous Reception (DRX) configuration reconfiguring DRX relating to an unusable frequency band based on IDC indication information; and
reconfiguring DRX based on the IDC DRX configuration to perform autonomous denial of Industrial Scientific Medical (ISM) transmission in the unusable frequency band,
wherein the IDC DRX configuration includes information configuring a DRX retransmission timer and information configuring a DRX short cycle to a predetermined cycle for avoiding the IDC interference.

### Claim at position 2

2-15. (canceled)