# US 2013/0281149 A1 · Method and a device for adjusting the transmission power of signals transferred by plural mobile terminals > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0281149 A1 - Document ID: US20130281149A1 - Status: Published application - Kind: A1 - Application number: 13/977,885 - Filed: 2011-12-27 - Published: 2013-10-24 - Earliest claimed: 2011-01-07 - Assignees: Mitsubishi Electric Corporation - Inventors: Loic Brunel; Julien Guillet; Nicolas Gresset - Web page: https://patentgrep.com/patent/US20130281149A1 ## CPC - H04W 52/243: {taking into account interferences} - H04W 52/146: {Uplink power control} - H04W 52/241: {taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo} - H04W 52/242: {taking into account path loss} - H04W 52/38: TPC being performed in particular situations - 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 A method for adjusting transmission power, in a wireless cellular telecommunication network, of signals transferred by plural mobile terminals through a wireless interface, the mobile terminals being served by at least one base station or by home base stations, the home base stations being located in the cell of the at least one base station. The method includes: obtaining at least the path gains between the mobile terminals and the at least one base station and at least one home base station; determining statistics from the obtained path gains; obtaining at least one coefficient of a function according to at least a part of the statistics; transferring an information representative of the at least one obtained coefficient to the mobile terminals. ## Claims ### Claim at position 1 1-14. (canceled) ### Claim 15 A method for adjusting transmission power, in a wireless cellular telecommunication network, of signals transferred by plural mobile terminals through a wireless interface, the mobile terminals being served by at least one base station or by home base stations, the home base stations being located in a cell of the at least one base station, the method comprising: obtaining path gains between the mobile terminals and the at least one base station and path gains between the mobile terminals and at least one home base station, and/or noise measured at the at least one base station and/or at the home base stations; determining statistics from the obtained path gains and/or noise; obtaining at least one coefficient of a function according to at least a part of the statistics determined from the obtained path gains and/or noise; and transferring an information representative of the at least one obtained coefficient to the mobile terminals to enable the mobile terminals to transfer signals at a transmission power derived from information representative of the at least one obtained coefficient. ### Claim 16 (depends on 15) A method according to claim 15, wherein for mobile terminals served by the at least one base station, the path gains between the mobile terminals and home base stations located in the cell of the at least one base station which serves the mobile terminals are obtained, and for mobile terminals served by home base stations, each path gain between a mobile terminal and only the home base station serving the mobile terminal is obtained. ### Claim 17 (depends on 15) A method according to claim 15, wherein the function is defined for a continuous range of real values or a plurality of coefficients are obtained, the coefficients being entries of a table representing the function. ### Claim 18 (depends on 15) A method according to claim 15, wherein each path gain is a path gain between one home base station serving one mobile terminal and the mobile terminal, or the path gain between one base station serving one mobile terminal and the mobile terminal, or the path gain between one home base station not serving one mobile terminal and the mobile terminal, or the path gain between one base station not serving one mobile terminal and the mobile terminal. ### Claim 19 (depends on 15) A method according to claim 15, wherein a set of at least one coefficient of the function is determined for each home base station and for the at least one base station. ### Claim 20 (depends on 15) A method according to claim 15, wherein a same set of at least one coefficient is determined for all the home base stations. ### Claim 21 (depends on 15) A method according to claim 15, wherein the path gains are obtained by the home base stations and the at least one base station and statistics are determined by the home base stations and the at least one base station. ### Claim 22 (depends on 15) A method according to claim 15, wherein the at least one coefficient of the function is obtained by the base station or by a server of the wireless cellular telecommunication network. ### Claim 23 (depends on 15) A method according to claim 15, wherein information representative of the at least one obtained coefficient is transferred to each mobile terminal via the base station serving the mobile terminal or via the home base station serving the mobile terminal. ### Claim 24 (depends on 23) A method according to the claim 23, wherein when the at least one coefficient of the function is obtained by the server, the at least one base station transfers to the server the harmonic mean of noise measured at the at least one base station, and/or the mean of noise measured at the at least one base station, and/or the mean over all mobile terminals served or having been served by the at least one base station of ratios of the path gain between a mobile terminal and a home base station over the path gain between the mobile terminal and its serving base station. ### Claim 25 (depends on 23) A method according to the claim 23, wherein each home base station transfers to the base station in the cell of which the home base station is located or to the server, the mean over all mobile terminals served or having been served by the home base station of ratio of the path gain between a mobile terminal served by a home base station and the base station over the path gain between the mobile terminal served by a home base station and the home base station, and/or the harmonic mean of noise measured at the home base station, and/or the mean of the noise measured at the home base station, and/or the mean over all mobile terminals served or having been served by the home base station of the path gain between a mobile terminal served by a home base station and the base station, and/or the standard deviation over all mobile terminals served or having been served by the home base station of the path gain between a mobile terminal served by a home base station and the base station, and/or the load of the home base station, and/or the harmonic mean over all mobile terminals served or having been served by the home base station of the path gain between a mobile terminal served by a home base station and the home base station, the mean over all mobile terminals served or having been served by the home base station of the path gain between a mobile terminal served by the home base station and the home base station, and/or the standard deviation over all mobile terminals served or having been served by the home base station of the path gain between a mobile terminal served by the home base station and the home base station. ### Claim 26 A system for adjusting the transmission power, in a wireless cellular telecommunication network, of signals transferred by plural mobile terminals through a wireless interface, the mobile terminals being served by at least one base station or by home base stations, the home base stations being located in the cell of the at least one base station, the system comprising: means for obtaining path gains between the mobile terminals and the at least one base station and path gains between the mobile terminals and the home base stations, and/or noise measured at the at least one base station, and/or at the home base stations; means for determining statistics from the obtained path gains and/or noise; means for obtaining at least one coefficient of a function according to at least a part of the statistics determined from the obtained path gains and/or noise; and means for transferring an information representative of the at least one obtained coefficient to the mobile terminals to enable the mobile terminals to transfer signals at a transmission power derived from information representative of the at least one obtained coefficient. ### Claim 27 (depends on 26) A system according to claim 26, wherein the means for obtaining the path gains are comprised in the home base stations and the at least one base station and the means for determining statistics are comprised in the home base stations and the at least one base station. ### Claim 28 (depends on 26) A system according to claim 26, wherein the means for optimizing the at least one coefficient of the function are comprised in the at least one base station or in a server of the wireless cellular telecommunication network.