Method for defining parameter values for controlling the transmission power of a piece of user equipment

A method for defining at least one parameter value for controlling a transmission power of a set of pieces of user equipment-served by a cell defined by a telecommunication cellular network base station, the method comprising, for the base station:

• receiving, from the set of pieces of user equipment located in the cell defined by the base station, a set of attenuation values comprising, respectively for each piece of user equipment, an attenuation value of a signal transmitted by the base station and received by the piece of user equipment and, if the piece of user equipment is also located in at least one non-serving cell, an attenuation value of a signal transmitted by a base station of the non-serving cell and received by the piece of user equipment;
• determining, using the set of attenuation values received, a value of at least one transmission power control parameter (α, P0);
• and
• sending to the set of pieces of user equipment served by the cell defined by the base station, the determined value of the control parameter (α, P0), to adapt the transmission power of the set of pieces of user equipment,
• wherein the determining comprises:
• selecting a maximum attenuation value PLMAX from amongst a set of attenuation values of at least one signal transmitted by the base station, and received by each piece of user equipment served by the base station;
• calculating, for each piece of user equipment served by the base station, a difference or differences between the attenuation value of a signal transmitted by each of the base stations for non-serving cells of said piece of user equipment and which are received by said piece of user equipment and the attenuation value of a signal transmitted by the base station and received by said piece of user equipment;
• selecting a minimum ΔPLMIN from amongst the values of the differences calculated for all pieces of user equipment served by the base station;
• calculating a ratio SINRMIN in accordance with the formula SINRMIN=SINR0+PLMIN, where SINR0 is a predetermined constant;
• calculating a value of a first transmission power control parameter α for pieces of user equipment served by the base station, in accordance with the formula:
• α=1−(SINRMIN−SINRMAX)/(PLMIN−PLMAX)
• where SINRMAX and PLMIN are predetermined constants, and calculating a value of a second transmission power control parameter for pieces of user equipment served by the base station, in accordance with the formula:
• P0=SINRMIN+(1−α)PLMAX+Nthermal
• where Nthermal is a predetermined constant.

A method for defining at least one parameter value for controlling a transmission power of a set of pieces of user equipment-served by a cell defined by a telecommunication cellular network base station, the method comprising, for the base station:

• receiving, from the set of pieces of user equipment located in the cell defined by the base station, a set of attenuation values comprising, respectively for each piece of user equipment, an attenuation value of a signal transmitted by the base station and received by the piece of user equipment and, if the piece of user equipment is also located in at least one non-serving cell, an attenuation value of a signal transmitted by a base station of the non-serving cell and received by the piece of user equipment;
• determining, using the set of attenuation values received, a value of at least one transmission power control parameter (α, P0);
• and
• sending to the set of pieces of user equipment served by the cell defined by the base station, the determined value of the control parameter (α, P0), to adapt the transmission power of the set of pieces of user equipment,
• wherein the determining comprises:
• selecting the k largest attenuation values from amongst a set of attenuation values of at least one signal transmitted by the base station, and received by each piece of user equipment served by the base station;
• calculating a mean attenuation value PLAVG of the k largest attenuation values selected;
• calculating, for each piece of user equipment served by the base station, a difference or differences between the attenuation value of a signal transmitted by each of the base stations of non-serving cells of said piece of user equipment and which are received by said piece of user equipment and the attenuation value of a signal transmitted by the base station and received by said piece of user equipment;
• selecting the k smallest calculated differences;
• calculating a mean ΔPLAVG of the k differences selected;
• calculating a ratio SINRMIN in accordance with the formula SINRMIN=SINR0+ΔPLAVG, where SINR0 is a predetermined constant,
• calculating a value of a first transmission power control parameter α for pieces of user equipment served by the base station in accordance with the formula:
• α=1−(SINRMIN−SINRMAX)/(PLMIN−PLMAX),
• where SINRMAX and PLMIN are predetermined constants, and
• calculating a value of a second transmission power control parameter P0 for pieces of user equipment served by the base station in accordance with the formula:
• P0=SINRMIN+(1−α)PLAVG+Nthermal,
• where Nthermal is a predetermined constant.