# US 2013/0157652 A1 · Methods and apparatus for deployment and control of small cells > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157652 A1 - Document ID: US20130157652A1 - Status: Published application - Kind: A1 - Application number: 13/527,451 - Filed: 2012-06-19 - Published: 2013-06-20 - Earliest claimed: 2011-06-20 - Assignees: QUALCOMM Incorporated - Inventors: Varun KHAITAN; Mehmet Yavuz - Web page: https://patentgrep.com/patent/US20130157652A1 ## CPC - H04W 52/24: using SIR [Signal to Interference Ratio] or other wireless path parameters - H04W 52/16: Deriving transmission power values from another channel - H04W 52/242: {taking into account path loss} - H04W 84/045: {using private Base Stations, e.g. femto Base Stations, home Node B} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods and apparatuses are provided for performing power control for a femto node deployed in a wireless network that include adjusting a transmission parameter of the femto node based on one or more radio frequency (RF) environment parameters. An RF environment parameter can be determined for a femto node related to a location in a coverage area. A different RF environment parameter related to other femto nodes at the location in the coverage area can be received from one or more devices, a network listening module, etc. A transmission parameter of the femto node, such as a transmit power, can be adjusted based on the RF environment parameter and the different RF environment parameter. ## Claims ### Claim 1 A method for performing power control for a femto node deployed in a wireless network, comprising: determining a radio frequency (RF) environment parameter of a femto node related to a location in a coverage area; receiving a different RF environment parameter related to other femto nodes at the location in the coverage area; and adjusting a transmission parameter of the femto node based on the RF environment parameter and the different RF environment parameter. ### Claim 2 (depends on 1) The method of claim 1, wherein the RF environment parameter is a pathloss to the femto node from the location in the coverage area, and the different RF environment parameter is a signal strength of the other femto nodes observed at the location in the coverage area. ### Claim 3 (depends on 1) The method of claim 1, wherein the transmission parameter is a transmit power of the femto node. ### Claim 4 (depends on 1) The method of claim 1, wherein the adjusting comprises computing an adjustment for the transmission parameter based in part on the RF environment parameter or the different RF environment parameter along with one or more thresholds for achieving a network coverage or performance. ### Claim 5 (depends on 1) The method of claim 1, further comprising selecting an initial value for the transmission parameter based at least in part on one or more signal measurements of one or more nearby femto nodes. ### Claim 6 (depends on 5) The method of claim 5, wherein the adjusting comprises adjusting the initial value based at least in part on the RF environment parameter or the different RF environment parameter. ### Claim 7 (depends on 1) The method of claim 1, wherein the receiving comprises receiving the different RF environment parameter from a user equipment (UE). ### Claim 8 (depends on 7) The method of claim 7, further comprising requesting the different RF environment parameter from the UE at periodic intervals or based on one or more events. ### Claim 9 (depends on 7) The method of claim 7, wherein the UE provides the different RF environment parameter as part of a measurement report in a mobility procedure. ### Claim 10 (depends on 1) The method of claim 1, wherein the receiving comprises receiving the different RF environment parameter from the femto node, and the adjusting comprises indicating an adjusted value of the transmission parameter to the femto node. ### Claim 11 (depends on 1) The method of claim 1, further comprising adjusting the transmission parameter based on at least one of a detected call termination or a network loading indication. ### Claim 12 (depends on 1) The method of claim 1, wherein the determining comprises measuring the RF environment parameter using a network listening module. ### Claim 13 (depends on 1) The method of claim 1, wherein the determining comprises determining a plurality of measurements of the RF environment parameter of the femto node over a period of time, and the adjusting is further based on the plurality of measurements. ### Claim 14 (depends on 1) The method of claim 1, wherein the receiving comprises receiving a plurality of measurements of the RF environment parameter of the other femto nodes over a period of time, and the adjusting is further based on the plurality of measurements. ### Claim 15 (depends on 14) The method of claim 14, wherein the receiving comprises receiving the plurality of measurements from a plurality of user equipment. ### Claim 16 An apparatus for performing power control for a femto node deployed in a wireless network, comprising: at least one processor configured to: determine a radio frequency (RF) environment parameter of a femto node related to a location in a coverage area; receive a different RF environment parameter related to other femto nodes at the location in the coverage area; and adjust a transmission parameter of the femto node based on the RF environment parameter and the different RF environment parameter; and a memory coupled to the at least one processor. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the RF environment parameter is a pathloss to the femto node from the location in the coverage area, and the different RF environment parameter is a signal strength of the other femto nodes observed at the location in the coverage area. ### Claim 18 (depends on 16) The apparatus of claim 16, wherein the transmission parameter is a transmit power of the femto node. ### Claim 19 (depends on 16) The apparatus of claim 16, wherein the at least one processor adjusts the transmission parameter based in part on the RF environment parameter or the different RF environment parameter as compared to one or more thresholds for achieving a network coverage or performance. ### Claim 20 (depends on 16) The apparatus of claim 16, wherein the at least one processor is further configured to select an initial value for the transmission parameter based at least in part on one or more signal measurements of one or more nearby femto nodes, and wherein the at least one processor adjusts the initial value based at least in part on the RF environment parameter or the different RF environment parameter. ### Claim 21 (depends on 16) The apparatus of claim 16, wherein the at least one processor receives the different RF environment parameter from a user equipment (UE). ### Claim 22 (depends on 16) The apparatus of claim 16, wherein the at least one processor receives the different RF environment parameter from the femto node, and wherein the at least one processor adjusts the transmission parameter in part by indicating an adjusted value of the transmission parameter to the femto node. ### Claim 23 An apparatus for performing power control for a femto node deployed in a wireless network, comprising: means for determining a radio frequency (RF) environment parameter of a femto node related to a location in a coverage area and receiving a different RF environment parameter related to other femto nodes at the location in the coverage area; and means for adjusting a transmission parameter of the femto node based on the RF environment parameter and the different RF environment parameter. ### Claim 24 (depends on 23) The apparatus of claim 23, wherein the RF environment parameter is a pathloss to the femto node from the location in the coverage area, and the different RF environment parameter is a signal strength of the other femto nodes observed at the location in the coverage area. ### Claim 25 (depends on 23) The apparatus of claim 23, wherein the transmission parameter is a transmit power of the femto node. ### Claim 26 (depends on 23) The apparatus of claim 23, wherein the means for adjusting computes an adjustment for the transmission parameter based in part on the RF environment parameter or the different RF environment parameter along with one or more thresholds for achieving a network coverage or performance. ### Claim 27 (depends on 23) The apparatus of claim 23, wherein the means for adjusting selects an initial value for the transmission parameter based at least in part on one or more signal measurements of one or more nearby femto nodes, and adjusts the initial value based at least in part on the RF environment parameter or the different RF environment parameter. ### Claim 28 (depends on 23) The apparatus of claim 23, wherein the means for determining receives the different RF environment parameter from a user equipment (UE). ### Claim 29 (depends on 23) The apparatus of claim 23, wherein the means for determining receives the different RF environment parameter from the femto node, and the means for adjusting indicates an adjusted value of the transmission parameter to the femto node. ### Claim 30 A computer program product for performing power control for a femto node deployed in a wireless network, comprising: a non-transitory computer-readable medium, comprising: code for causing at least one computer to determine a radio frequency (RF) environment parameter of a femto node related to a location in a coverage area; code for causing the at least one computer to receive a different RF environment parameter related to other femto nodes at the location in the coverage area; and code for causing the at least one computer to adjust a transmission parameter of the femto node based on the RF environment parameter and the different RF environment parameter. ### Claim 31 (depends on 30) The computer program product of claim 30, wherein the RF environment parameter is a pathloss to the femto node from the location in the coverage area, and the different RF environment parameter is a signal strength of the other femto nodes observed at the location in the coverage area. ### Claim 32 (depends on 30) The computer program product of claim 30, wherein the transmission parameter is a transmit power of the femto node. ### Claim 33 (depends on 30) The computer program product of claim 30, wherein the code for causing the at least one computer to adjust adjusts the transmission parameter based in part on the RF environment parameter or the different RF environment parameter as compared to one or more thresholds for achieving a network coverage or performance. ### Claim 34 (depends on 30) The computer program product of claim 30, wherein the computer-readable medium further comprises code for causing the at least one computer to select an initial value for the transmission parameter based at least in part on one or more signal measurements of one or more nearby femto nodes, and wherein the code for causing the at least one computer to adjust adjusts the initial value based at least in part on the RF environment parameter or the different RF environment parameter. ### Claim 35 (depends on 30) The computer program product of claim 30, wherein the code for causing the at least one computer to receive receives the different RF environment parameter from a user equipment (UE). ### Claim 36 (depends on 30) The computer program product of claim 30, wherein the code for causing the at least one computer to receive receives the different RF environment parameter from the femto node, and wherein the code for causing the at least one computer to adjust adjusts the transmission parameter in part by indicating an adjusted value of the transmission parameter to the femto node. ### Claim 37 An apparatus for performing power control for a femto node deployed in a wireless network, comprising: a radio frequency (RF) measuring component for determining a RF environment parameter of a femto node related to a location in a coverage area and receiving a different RF environment parameter related to other femto nodes at the location in the coverage area; and a transmission adjusting component for adjusting a transmission parameter of the femto node based on the RF environment parameter and the different RF environment parameter. ### Claim 38 (depends on 37) The apparatus of claim 37, wherein the RF environment parameter is a pathloss to the femto node from the location in the coverage area, and the different RF environment parameter is a signal strength of the other femto nodes observed at the location in the coverage area. ### Claim 39 (depends on 37) The apparatus of claim 37, wherein the transmission parameter is a transmit power of the femto node. ### Claim 40 (depends on 37) The apparatus of claim 37, wherein the transmission adjusting component computes an adjustment for the transmission parameter based in part on the RF environment parameter or the different RF environment parameter along with one or more thresholds for achieving a network coverage or performance. ### Claim 41 (depends on 37) The apparatus of claim 37, wherein the transmission adjusting component selects an initial value for the transmission parameter based at least in part on one or more signal measurements of one or more nearby femto nodes. ### Claim 42 (depends on 41) The apparatus of claim 41, wherein the transmission adjusting component adjusts the initial value based at least in part on the RF environment parameter or the different RF environment parameter. ### Claim 43 (depends on 37) The apparatus of claim 37, wherein the RF measuring component receives the different RF environment parameter from a user equipment (UE). ### Claim 44 (depends on 43) The apparatus of claim 43, wherein the RF measuring component requests the different RF environment parameter from the UE at periodic intervals or based on one or more events. ### Claim 45 (depends on 43) The apparatus of claim 43, wherein the UE provides the different RF environment parameter as part of a measurement report in a mobility procedure. ### Claim 46 (depends on 37) The apparatus of claim 37, wherein the wherein the RF measuring component receives the different RF environment parameter from the femto node, and the transmission adjusting component indicates an adjusted value of the transmission parameter to the femto node. ### Claim 47 (depends on 37) The apparatus of claim 37, wherein the transmission adjusting component adjusts the transmission parameter based on at least one of a detected call termination or a network loading indication. ### Claim 48 (depends on 37) The apparatus of claim 37, wherein the RF measuring component determines the RF environment parameter at least in part by measuring the RF environment parameter using a network listening module. ### Claim 49 (depends on 37) The apparatus of claim 37, wherein the RF measuring component determines a plurality of measurements of the RF environment parameter of the femto node over a period of time, and the transmission adjusting component adjusts the transmission parameter further based on the plurality of measurements. ### Claim 50 (depends on 37) The apparatus of claim 37, wherein the RF measuring component receives a plurality of measurements of the RF environment parameter of the other femto nodes over a period of time, and the transmission adjusting component adjusts the transmission parameter further based on the plurality of measurements. ### Claim 51 (depends on 50) The apparatus of claim 50, wherein the RF measuring component receives the plurality of measurements from a plurality of user equipment.