Power control method and device

Abstract

The present invention proposes a method for controlling a power used for transmitting data between a terminal device (TD) and a transceiver device (BTS) of a communication system, said method comprising the steps of monitoring (S 2 ) during a predetermined time unit the power used in a transmission between said terminal device (TD) and said transceiver device (BTS), requesting (S 3 ) an increase or a decrease of the power used in the transmission by using a specific information element (TPC) for each predetermined time unit, storing (S 4 ) a predetermined number (w) of said specific information elements (TPC), calculating (S 5, S 6 ) a first value and a second value concerning the power of transmission during said predetermined number (w) of said specific information elements (TPC), and deciding (S 7 ) by using the first value and the second value concerning the power calculated in said calculating step (S 5, S 6 ), whether the first value concerning the power is greater than a sum of the second value concerning the power and a predetermined level (L). The present invention also proposes a corresponding device.

1 - 18 . (canceled) 
   
   
       19 . A method, comprising:
 receiving a request to change transmission power between a terminal device and a transceiver device, the change indicated by a specific information element in each of predetermined time units,   calculating a power raise requested for the transmission power during a predetermined number of said time units,   calculating an average received power of transmission during the predetermined number of said time units,   determining whether the calculated power raise is greater than a sum of the calculated average received power and a predetermined level, and   controlling the transmission power on the basis of the determination.   
   
   
       20 . The method according to  claim 19 , wherein the predetermined time unit is a timeslot. 
   
   
       21 . The method according to  claim 19 , wherein the predetermined time unit is a frame composed of a plurality of timeslots. 
   
   
       22 . The method according to  claim 19 , wherein a value of each one of said specific information elements in each predetermined time unit is one of −1 indicating a request for a decrease of power and +1 indicating a request for an increase of power. 
   
   
       23 . The method according to  claim 19 , further comprising:
 if the determination is positive, inhibiting an increase of the power used in the transmission even if an increase is requested, and   if the determination is negative, allowing an increase in the power used in the transmission when an increase is requested.   
   
   
       24 . The method of  claim 19 , where the method is performed by at least one of said transceiver device and said terminal device. 
   
   
       25 . The method of  claim 19 , where the method is performed in a downlink direction. 
   
   
       26 . The method of  claim 19 , where the method is performed in an uplink direction. 
   
   
       27 . An apparatus comprising:
 a receiver configurable to receive a request to change transmission power between a terminal device and a transceiver device, the change indicated by a specific information element in each of predetermined time units,   a calculating device configurable to calculate a power raise requested for the transmission power during a predetermined number of said time units,   the calculating device further configured to calculate an average received power of transmission during the predetermined number of said time units,   a deciding device configured to determine whether the calculated power raise is greater than a sum of the calculated average received power and a predetermined level, and   an output device configured to control the transmission power on the basis of the determination.   
   
   
       28 . The apparatus according to  claim 27 , wherein the predetermined time unit is a timeslot. 
   
   
       29 . The apparatus according to  claim 27 , wherein the predetermined time unit is a frame composed of a plurality of timeslots. 
   
   
       30 . The apparatus according to  claim 27 , wherein a value of each one of said specific information elements used in each predetermined time unit is one of −1 indicating a request for a decrease of power and +1 indicating a request for an increase of power. 
   
   
       31 . The apparatus according to  claim 27 , where in response to the deciding device determining, the output means further configured to:
 if the determination is positive, inhibit an increase of the power used in the transmission even if an increase is requested, and   if the determination is negative, allow an increase in the power used in the transmission when an increase is requested.   
   
   
       32 . The apparatus of  claim 27  embodied in at least one of the transceiver device and the terminal device. 
   
   
       33 . The apparatus of  claim 27 , where power used in a downlink transmission is controlled. 
   
   
       34 . The apparatus of  claim 27 , where power used in an uplink transmission is controlled. 
   
   
       35 . A storing means embodying software executable by a device to perform operations comprising:
 receiving a request to change transmission power between a terminal device and a transceiver device, the change indicated by a specific information element in each of predetermined time units,   calculating a power raise requested for the power used in the transmission during a predetermined number of said time units,   calculating an average received transmission power during a predetermined number of said time units,   determining whether the calculated power raise is greater than a sum of the calculated average received power and a predetermined level, and   controlling the transmission power on the basis of the determination.   
   
   
       36 . A method, comprising:
 receiving a request indicating a determined change of power used in a transmission between a terminal device and a transceiver device, the request comprising a specific information element in each of predetermined time units,   calculating from the information element a power raise requested for the power used in the transmission during a predetermined number of said time units,   calculating an average received power of transmission during the predetermined number of said time units,   determining whether the calculated power is greater than a sum of the calculated average received power and a predetermined level, and   controlling the power used in the transmission between the terminal device and the transceiver device on the basis of the determination.   
   
   
       37 . The method according to  claim 36 , wherein the predetermined time unit is a timeslot. 
   
   
       38 . The method according to  claim 36 , wherein the predetermined time unit is a frame composed of a plurality of timeslots. 
   
   
       39 . The method according to  claim 36 , wherein a value of each one of said specific information elements used in each predetermined time unit is one of −1 indicating a request for a decrease of power and +1 indicating a request for an increase of power. 
   
   
       40 . The method according to  claim 36 , further comprising:
 if the determination is positive, inhibiting an increase of the power used in the transmission even if an increase is requested, and   if the determination is negative, allowing an increase in the power used in the transmission when an increase is requested.   
   
   
       41 . The method of  claim 36 , where the method is performed by at least one of said transceiver device and said terminal device. 
   
   
       42 . The method of  claim 36 , where the method is performed in a downlink direction. 
   
   
       43 . The method of  claim 36 , where the method is performed in an uplink direction.