System and method for controlling high-speed wireless packet between uplink and downlink transmissions

Abstract

The mobile station 2 - 1 determines whether a current maximum transmission rate is sufficient or not in a predetermined cycle by using a maximum transmission rate R indicated by a pointer, a volume Q of data accumulated in the buffer 22 - 1 and a requested delay T determined according to service of data. The mobile station 2 - 1 transmits a determination result as an RR signal in a predetermined control signal field within an uplink E-DPCH to the base station 1 . The base station 1 receives an RR signal from the mobile station 2 - 1 , determines an increment/decrement of the maximum transmission rate allowed for the mobile station 2 - 1 to use such that a noise rise fails to exceed a predetermined threshold value and notifies the mobile station 2 - 1 of the determination as an RG signal by a downlink E-DPCCH. The mobile station 2 - 1 ups or downs the position of the pointer according to the RG signal.

1 . A radio communication system enabling execution of high-speed packet transmission on an uplink and a downlink between a base station and a mobile station, in which
 said base station comprises   a first transmission means for transmitting a downlink packet transmission notification signal to the mobile station and a second transmission means for transmitting a downlink packet to the mobile station after a predetermined time after the transmission of the downlink packet transmission notification signal, and   said mobile station comprises   a reception means for, upon receiving a downlink packet transmission notification signal directed to its own station, receiving a corresponding downlink packet,   a first determination means for determining power usable in each transmission time unit of a first channel of the uplink according to the number of downlink packet transmission notification signals directed to its own station which have been received in a first predetermined time interval prior to the relevant transmission time unit,   a second determination means for determining a transmission rate of the first channel based on the usable power, and   a transmission means for transmitting an uplink packet by the first channel by using a determined transmission rate and transmitting a reception result notification signal of a downlink packet by a second channel of the uplink.   
     
     
         2 . A mobile station which enables execution of high-speed packet transmission on an uplink and a downlink provided between the station and the base station, comprising:
 a reception means for, upon receiving a downlink packet transmission notification signal directed to its own station, receiving a corresponding downlink packet;   a first determination means for determining power usable in each transmission time unit of a first channel of the uplink according to the number of downlink packet transmission notification signals directed to its own station which have been received in a first predetermined time interval prior to the relevant transmission time unit;   a second determination means for determining a transmission rate of the first channel based on the usable power; and   a transmission means for transmitting an uplink packet by the first channel by using a determined transmission rate and transmitting a reception result notification signal of a downlink packet by a second channel of the uplink.   
     
     
         3 . A base station enabling packet transmission between the base station and a mobile station to be activated, comprising:
 a first transmission means for transmitting a downlink packet transmission notification signal to the mobile station;   a second transmission means for transmitting a downlink packet to the mobile station after a predetermined time after the transmission of the downlink packet transmission notification signal; and   a determination means for determining whether transmission of a downlink packet to the mobile station in each transmission time unit of a first channel of the uplink is allowed or not according to the number of the downlink packet transmission notification signals transmitted to the mobile station in a first predetermined time interval prior to the relevant transmission time unit.   
     
     
         4 . A radio communication system controlling method of controlling a radio communication system enabling execution of high-speed packet transmission on an uplink and a downlink between a base station and a mobile station, in which
 said base station transmits a downlink packet transmission notification signal and transmits a downlink packet after a predetermined time after the transmission of the downlink packet transmission notification signal,   and said mobile station, upon receiving a downlink packet transmission notification signal directed to its own station, receives a corresponding downlink packet, determines power usable in each transmission time unit of a first channel of the uplink according to the number of downlink packet transmission notification signals directed to its own station which have been received in a first predetermined time interval prior to the relevant transmission time unit, determines a transmission rate of the first channel based on the usable power, transmits an uplink packet by the first channel by using a determined transmission rate and transmits a reception result notification signal of a downlink packet by a second channel of the uplink.   
     
     
         5 . A program of a radio communication system controlling method of controlling a radio communication system that enables execution of high-speed packet transmission on an uplink and a downlink between a base station and a mobile station, which causes a computer of the mobile station to execute
 processing of, upon receiving a downlink packet transmission notification signal directed to its own station, receiving a corresponding downlink packet,   processing of determining power usable in each transmission time unit of a first channel of the uplink according to the number of downlink packet transmission notification signals directed to its own station which have been received in a first predetermined time interval prior to the relevant transmission time unit,   processing of determining a transmission rate of the first channel based on the usable power, and   processing of transmitting an uplink packet by the first channel by using a determined transmission rate and transmitting a reception result notification signal of a downlink packet by a second channel of the uplink.   
     
     
         6 . A program of a radio communication system controlling method of controlling a radio communication system that enables execution of high-speed packet transmission on an uplink and a downlink between a base station and a mobile station, which causes a computer of the mobile station to execute
 processing of transmitting a downlink packet transmission notification signal to the mobile station,   processing of transmitting a downlink packet to the mobile station after a predetermined time after the transmission of the downlink packet transmission notification signal, and   processing of determining whether transmission of a downlink packet to the mobile station in each transmission time unit of a first channel of the uplink is allowed or not according to the number of the downlink packet transmission notification signals transmitted to the mobile station in a first predetermined time interval prior to the relevant transmission time unit.   
     
     
         7 . A radio communication system enabling execution of high-speed packet transmission on an uplink and a downlink between a base station and a mobile station, in which
 said base station comprises   a means for transmitting a downlink packet transmission notification signal to the mobile station and transmitting a downlink packet to the mobile station after the transmission of the downlink packet transmission notification signal, and   said mobile station comprises   a means for, upon receiving a downlink packet transmission notification signal directed to its own station, receiving a corresponding downlink packet,   a means for determining power usable in each transmission time unit of a channel of the uplink according to the number of downlink packet transmission notification signals directed to its own station which have been received in a predetermined time interval prior to the relevant transmission time unit,   a means for determining a transmission rate of the channel based on the usable power, and   a means for transmitting an uplink packet by the channel by using a determined transmission rate and transmitting a reception result notification signal of a downlink packet by a channel of the uplink.   
     
     
         8 . A mobile station which enables execution of high-speed packet transmission on an uplink and a downlink provided between the station and the base station, comprising:
 a means for receiving a downlink packet corresponding to a downlink packet transmission notification signal directed to its own station,   a means for determining power usable in each transmission time unit of a channel of the uplink according to the number of downlink packet transmission notification signals directed to its own station which have been received in a predetermined time interval prior to the relevant transmission time unit;   a means for determining a transmission rate of the channel based on the usable power; and   a means for transmitting an uplink packet by the channel by using a determined transmission rate and transmitting a reception result notification signal of a downlink packet by a channel of the uplink.   
     
     
         9 . A base station enabling packet transmission between the base station and a mobile station to be activated, comprising:
 a means for transmitting a downlink packet transmission notification signal to the mobile station and transmitting a downlink packet to the mobile station after a predetermined time after the transmission of the downlink packet transmission notification signal; and   a means for determining whether transmission of a downlink packet to the mobile station in each transmission time unit of a channel of the uplink is allowed or not according to the number of the downlink packet transmission notification signals transmitted to the mobile station in a predetermined time interval prior to the relevant transmission time unit.   
     
     
         10 . A radio communication system controlling method of controlling a radio communication system enabling execution of high-speed packet transmission on an uplink and a downlink between a base station and a mobile station, in which
 said base station transmits a downlink packet transmission notification signal and transmits a downlink packet after the transmission of the downlink packet transmission notification signal,   and said mobile station receives a downlink packet corresponding to the downlink packet transmission notification signal directed to its own station, determines power usable in each transmission time unit of a channel of the uplink according to the number of downlink packet transmission notification signals directed to its own station which have been received in a predetermined time interval prior to the relevant transmission time unit, determines a transmission rate of the channel based on the usable power, transmits an uplink packet by the channel by using a determined transmission rate and transmits a reception result notification signal of a downlink packet by a channel of the uplink.