# US 2019/0174426 A1 · Method for operating femtocell in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174426 A1 - Document ID: US20190174426A1 - Status: Published application - Kind: A1 - Application number: 16/269,613 - Filed: 2019-02-07 - Published: 2019-06-06 - Earliest claimed: 2008-12-17 - Assignees: Ibex Pt Holdings Co., Ltd. - Applicants: Ibex Pt Holdings Co., Ltd. - Inventors: Yongseok LEE - Web page: https://patentgrep.com/patent/US20190174426A1 ## CPC - H04W 52/243: {taking into account interferences} - H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services - H04W 36/0061: {of neighbour cell information} - H04W 36/08: Reselecting an access point - H04W 52/0206: {in access points, e.g. base stations} - H04W 52/244: {Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]} - H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points - H04W 36/04: Reselecting a cell layer in multi-layered cells - H04W 36/249: {according to timing information} - H04W 36/302: {due to low signal strength} - H04W 36/304: {due to measured or perceived resources with higher communication quality} - H04W 52/288: {taking into account the usage mode, e.g. hands-free, data transmission or telephone} - H04W 84/045: {using private Base Stations, e.g. femto Base Stations, home Node B} - 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) - 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 for operating a femtocell in a wireless communication system comprises the steps of: triggering the switching from the operation mode for providing a service to closed subscriber group (CSG) terminals which belong to a specific terminal group and to non-CSG terminals which do not belong to the specific terminal group, to the operation mode for providing the service only to said CSG terminals; and commanding said non-CSG terminals to change the operation mode, and carrying out a handover. The method of the present invention improves efficiency of femtocell operation, and reduces restrictions on terminals disposed in the vicinity of the femtocell. The method of the present invention can utilize the unused frequency range of the femtocell, thereby providing a service with a high data ratio. ## Claims ### Claim 1 A method for receiving, by a non-closed subscriber group (CSG) terminal, a service in a wireless communication system, the method comprising: receiving the service from a first home base station configured for a first operation mode, wherein the first operation mode is an operation mode that the service is provided to a closed subscriber group (CSG) terminal that belongs to a specific terminal group and a non-CSG terminal that does not belong to the specific terminal group; and determining whether to perform a handover to a second home base station based on whether the service can be continuously provided to the non-CSG terminal by the first home base station, wherein: when the service is not continuously provided to the non-CSG terminal by the first home base station, performing the handover to the second home base station, and when the service is continuously provided to the non-CSG terminal by the first home base station, a data rate for the service is reduced. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving, from the first home base station, a service adjustment message; and transmitting, to the first home base station, an acknowledgement message in response to the service adjustment message, wherein if the acknowledgement message is received by the first home base station, the service is provided continuously from the first home base station. ### Claim 3 (depends on 1) The method of claim 1, further comprising: receiving, from the first home base station, a control message for time when the first home base station switches to a second operation mode, wherein the second operation mode is an operation mode that the service is provided only to the CSG terminal. ### Claim 4 (depends on 1) The method of claim 1, wherein the second home base station is a base station capable of communicating with the CSG terminal and the non-CSG terminal. ### Claim 5 A non-closed subscriber group (CSG) terminal for receiving a service in a wireless communication system, comprising: a transmitter configured to transmit a wireless signal; a receiver configured to receive the wireless signal; and a processor configured to: receive the service from a first home base station configured for a first operation mode, wherein the first operation mode is an operation mode that the service is provided to a closed subscriber group (CSG) terminal that belongs to a specific terminal group and a non-CSG terminal that does not belong to the specific terminal group; and determine whether to perform a handover to a second home base station based on whether the service can be continuously provided to the non-CSG terminal by the first home base station, wherein: when the service is not continuously provided to the non-CSG terminal by the first home base station, perform the handover to the second home base station, and when the service is continuously provided to the non-CSG terminal by the first home base station, a data rate for the service is reduced. ### Claim 6 (depends on 5) The terminal of claim 5, wherein the processor is further configured to: receive, from the first home base station, a service adjustment message; and transmit, to the first home base station, an acknowledgement message in response to the service adjustment message, wherein if the acknowledgement message is received by the first home base station, the service is provided continuously from the first home base station. ### Claim 7 (depends on 5) The terminal of claim 5, wherein the processor is further configured to: receive, from the first home base station, a control message for time when the first home base station switches to a second operation mode, wherein the second operation mode is an operation mode that the service is provided only to the CSG terminal. ### Claim 8 (depends on 5) The terminal of claim 5, wherein the second home base station is a base station capable of communicating with the CSG terminal and the non-CSG terminal. ### Claim 9 (depends on 1) The method of claim 1, wherein the first home base station is a home NodeB (HNB) or a home eNodeB (HeNB). ### Claim 10 (depends on 5) The terminal of claim 5, wherein the first home base station is a home NodeB (HNB) or a home eNodeB (HeNB).