JP2003199173A - Mobile communication system, communication control method, base station and mobile station used in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a HSDPA (High Speed Downlink Packet Access) type mobile communication system where a base station sets the uplink control channel with the mobile station to transmit a pilot signal, the mobile station measures a reception quality of the pilot signal to transmit the quality information to the base station using the uplink quality control channel, and the base station performs transmission control of data for the mobile station using the quality information, power consumption in the mobile station can be reduced, interference wave power in the uplink can be reduced, and capacity of the uplink can be increased. <P>SOLUTION: The mobile station is set to perform control of starting and stopping transmission of the quality information in the case of setting an uplink quality control channel so that the quality information is transmitted only as required. Therefore, power consumption in the mobile station can be reduced, interference wave power in the uplink can be reduced, and capacity of the uplink can be increased. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system, a communication control method, and a base station and a mobile station used therefor, and particularly to a high speed downlink packet transmission (HSDPA) for transmitting high speed data to a downlink from the base station to the mobile station. High Spe
The present invention relates to a mobile communication system and a communication control method suitable for use in the ed Downlink Packet Access) system, and a base station and a mobile station used therefor.

[0002]

2. Description of the Related Art This kind of high speed downlink packet transmission (HSD
PA method is 3GPP (3rd Generation Partnership P)
roject). In this HSDPA system,
For downlink transmission from the base station to the mobile station, a high speed downlink shared channel (HS-PDSCH: High Speed-Physi) is used.
cal Downlink Shared Channel) is used. This HS
-The PDSCH is for transmitting packet data, and one HS-PDSCH can be shared and used by temporally sharing (time division) with a plurality of mobile stations.

In the HSDPA system, in order to control data transmission from the base station to the mobile station, an uplink dedicated channel (DPCH: Dedicated Dedicated) is provided between the base station and each of the plurality of mobile stations.
d Physical Control Channel) and uplink quality control channel (HS-DPCCH: High Speed-Dedicated Physi)
cal Control Channel). UL (uplink:
UpLink) DPCH is used to transmit control information such as data transmission timing information from the mobile station to the base station. In addition, in the UL HS-DPCCH, a mobile station sends a HARQ (Hybrid-Automatic Repeat reQu) to a base station.
est: ACK / N of automatic resend request [its meaning is described later])
It is used to transmit ACK (Acknowledge / Negative Acknowledge) information and quality information.

Here, the quality means the quality (Ec / Cc) of a common pilot signal (CPICH: Common Pilot Channel).
Io: [energy per chip / interference wave power per unit frequency]).

[0005]

[Problems to be Solved by the Invention] Conventional HSDP
In method A, ULD is started from the start of HS-PDSCH setting.
In order to continue setting up the PCH and UL HS-DPCCH, a large number of mobile stations that do not need to transmit quality information, that is, a large number of mobile stations that do not receive packets are HS-DPC.
Since CH is set, there is a problem that the interference wave power of UL becomes large and the uplink radio channel capacity is significantly limited.

Further, since the mobile station continuously transmits the quality information, there is a problem that the power consumption becomes large and the operating time of the battery becomes short. Further, since the base station transmits the quality information at a predetermined timing and interval, there is a problem that the base station cannot receive the quality information at the timing of transmitting data to the mobile station.

An object of the present invention is to provide a mobile communication system and a communication control method capable of reducing the power consumption of the mobile station, and a mobile station and a base station used for the same.

Another object of the present invention is to provide a mobile communication system and communication control method capable of reducing the interference wave power of the uplink and increasing the uplink capacity, and a mobile station and a base station used therefor. Is.

[0009]

A mobile communication system according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, and the mobile station sets an uplink control channel with the base station. Then, the reception quality of the downlink signal is measured and quality information corresponding to the reception quality is transmitted to the base station using the uplink control channel, and the base station uses the quality information to transmit data to the mobile station. Of the mobile communication system, wherein the base station includes means for setting a downlink control channel with the mobile station and transmitting a data transmission notification to the mobile station, wherein the mobile station is During the uplink control channel setting, in response to the data transmission notification, means for starting the transmission of the quality information to the base station at a predetermined interval is included.

Another mobile communication system according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and the downlink is transmitted. The reception quality of the signal is measured and the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls the transmission of data to the mobile station using the quality information. In the mobile communication system, the mobile station is configured to transmit the quality information at predetermined intervals in response to receiving data, and transmitting the quality information using the uplink control channel. And means for transmitting instruction information indicating that

Still another mobile communication system according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and The reception quality of the downlink signal is measured and quality information corresponding to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls transmission of data to a mobile station using the quality information. In the mobile communication system, the base station includes means for setting a downlink control channel with the mobile station to notify the mobile station of a threshold, and the mobile station includes the threshold and the reception. It is characterized by including means for controlling the transmission of the quality information to the base station at a predetermined interval in response to the result of quality comparison.

Another mobile communication system according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and the downlink signal is transmitted. The reception quality of the signal is measured and the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls the transmission of data to the mobile station using the quality information. In this mobile communication system, the base station sets a downlink control channel with the mobile station and requests the mobile station to report the quality information in response to data transmission to the mobile station. The mobile station includes means for transmitting the quality information to the base station at a predetermined interval in response to the instruction information.

A communication control method according to the present invention includes a base station and a mobile station, the base station transmitting a downlink signal, the mobile station setting an uplink control channel with the base station, and transmitting the downlink signal. The reception quality is measured and the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station uses the quality information to control the transmission of data to the mobile station. In the communication control method in the mobile communication system according to, the base station includes a step of setting a downlink control channel with the mobile station and transmitting a data transmission notification to the mobile station, the mobile station,
During the setting of the uplink control channel, a step of starting the transmission of the quality information to the base station at a predetermined interval in response to the data transmission notification is included.

Another communication control method according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station,
The reception quality of the downlink signal is measured and quality information corresponding to the reception quality is transmitted to the base station using the uplink control channel, and the base station transmits data to the mobile station using the quality information. A communication control method in a mobile communication system configured to perform control, wherein the mobile station comprises:
In response to receiving data, transmitting the quality information at predetermined intervals, and transmitting instruction information indicating that the quality information is being transmitted using the uplink control channel. Characterize.

Still another communication control method according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and The reception quality of the downlink signal is measured and quality information corresponding to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls transmission of data to a mobile station using the quality information. A method of controlling communication in a mobile communication system, wherein the mobile station transmits the quality information at predetermined intervals in response to reception of data, and the mobile station uses the uplink control channel to transmit the quality information. A step of transmitting instruction information indicating that the quality information is being transmitted.

Another communication control method according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station,
The reception quality of the downlink signal is measured and quality information corresponding to the reception quality is transmitted to the base station using the uplink control channel, and the base station transmits data to the mobile station using the quality information. A communication control method in a mobile communication system configured to perform control, wherein the base station comprises:
Including a step of setting a downlink control channel with the mobile station and notifying the mobile station of a threshold, the mobile station is responsive to the comparison result of the threshold and the reception quality, the quality information to the base station. Is controlled at predetermined intervals.

Still another communication control method according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and The reception quality of the downlink signal is measured and quality information corresponding to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls transmission of data to a mobile station using the quality information. In the communication control method in the mobile communication system, the base station sets a downlink control channel with the mobile station, and the quality information is transmitted to the mobile station in response to data transmission to the mobile station. The mobile station includes a step of transmitting the quality information to the base station at a predetermined interval in response to the instruction information. To.

A mobile station according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and receives the downlink signal. The quality is measured and the quality information corresponding to the reception quality is transmitted to the base station using the uplink control channel, and the base station uses the quality information to control the transmission of data to the mobile station. A mobile station in the mobile communication system, wherein means for setting a downlink control channel with the base station and receiving a data transmission notification from the base station; and a means for receiving the data transmission notification during the uplink control channel setting. And a means for starting the transmission of the quality information to the base station at a predetermined interval in response.

Another mobile station according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and the downlink signal is transmitted. Of the received quality and transmits quality information corresponding to the received quality to the base station using the uplink control channel, and the base station controls transmission of data to the mobile station using the quality information. And a means for transmitting the quality information at predetermined intervals in response to reception of data, and transmitting the quality information using the uplink control channel. And means for transmitting instruction information indicating.

Still another mobile station according to the present invention includes a base station and a mobile station, said base station transmitting a downlink signal, said mobile station setting an uplink control channel with said base station, and said downlink station. The reception quality of the signal is measured and the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls the transmission of data to the mobile station using the quality information. A mobile station in a mobile communication system configured to do so, which sets a downlink control channel with the base station, receives a threshold value from the base station, and responds to a comparison result of the threshold value and the reception quality. hand,
Means for controlling the transmission of the quality information to the base station at predetermined intervals.

Another mobile station according to the present invention includes a base station and a mobile station, said base station transmitting a downlink signal, said mobile station setting an uplink control channel with said base station, and said downlink signal. Of the received quality and transmits quality information corresponding to the received quality to the base station using the uplink control channel, and the base station controls transmission of data to the mobile station using the quality information. A mobile station in the mobile communication system, wherein the base station and the downlink control channel are set, and from the base station that transmits instruction information indicating that the quality information is requested to be reported in response to data transmission. , And means for receiving the instruction information, and means for transmitting the quality information to the base station at predetermined intervals in response to the instruction information.

A base station according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and receives the downlink signal. The quality is measured and the quality information corresponding to the reception quality is transmitted to the base station using the uplink control channel, and the base station uses the quality information to control the transmission of data to the mobile station. A base station in the mobile communication system, which transmits downlink data transmission notification to the mobile station by setting a downlink control channel with the mobile station, and responds to the data transmission notification during the uplink control channel setting. And a means for receiving the quality information from the mobile station that transmits the quality information at predetermined intervals.

Another base station according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and the downlink signal is transmitted. Of the received quality and transmits quality information corresponding to the received quality to the base station using the uplink control channel, and the base station controls transmission of data to the mobile station using the quality information. A base station in the mobile communication system, wherein means for receiving the quality information from the mobile station at a predetermined interval, and the quality information being transmitted from the mobile station using the uplink control channel. Means for receiving instruction information indicating that there is a certain item.

Yet another base station according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and the downlink The reception quality of the signal is measured and the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls the transmission of data to the mobile station using the quality information. A base station in a mobile communication system that has been configured, means for notifying a threshold value to the mobile station by setting the mobile station and a downlink control channel,
Means for receiving the quality information from the mobile station that transmits the quality information at a predetermined interval in response to the comparison result of the threshold and the reception quality.

Another base station according to the present invention includes a base station and a mobile station, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and the downlink signal is transmitted. The reception quality is measured and the quality information according to the reception quality is transmitted to the base station at predetermined intervals using the uplink control channel, and the base station uses the quality information to transmit data to the mobile station. A base station in a mobile communication system configured to perform transmission control, setting a downlink control channel with the mobile station, and requesting the mobile station to report the quality information in response to data transmission to the mobile station. Means for transmitting instruction information indicating that the mobile station,
Means for receiving the quality information.

The operation of the present invention will be described. The base station sets the mobile station and the uplink control channel and transmits the pilot signal,
The mobile station measures the reception quality of this pilot signal and transmits quality information to the base station using the uplink quality control channel,
In the HSDPA mobile communication system in which the base station controls the transmission of data to the mobile station using this quality information, the mobile station controls the start and stop of the transmission of the quality information during the setting of the uplink quality control channel. Configure to eggplant. That is, the mobile station controls transmission of quality information from the mobile station to the base station only when necessary, so that the power consumption of the mobile station is reduced, the interference wave power of the uplink is reduced,
An effect such as an increase in capacity of the uplink occurs.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing an example of the basic configuration of a mobile station according to the first embodiment of the present invention, and FIG. 2 is a block diagram showing an example of the basic configuration of a base station.

Referring to FIG. 1, the received wave from the antenna is supplied to the receiving section 12 through the transmission / reception duplexer (DUP) 11 and demodulated. The demodulation output is separated by the channel separation unit 13 into user information and control information. Downlink dedicated channel (hereinafter DL [Downlink]) of the control information
DPCH (DPCCH) is detected by the DPCCH detection unit 14 and supplied to the transmission control unit 15. Transmission control unit 1
5 analyzes the DL DPCCH, and when it is necessary to send the quality information to the base station, the switch 17 is turned on and the CP
The detection result of the ICH detection unit 16 is supplied to the power measurement unit 18.

Further, the transmission controller 15 uses the DL DPCCH
When it is determined that it is not necessary to transmit the control information such as the quality information to the base station, the uplink channel is released. The common pilot channel CPICH is detected by the detection unit 16, and when the switch 17 is on, the reception power is measured by the power measurement unit 18 and supplied to the transmission control unit 15. The transmission control unit 15 creates control information such as quality information to be transmitted to the base station, supplies the control information to the combining unit 19, and the combining unit 19 generates the transmission information.

Here, the quality information indicates the reception quality (Ec / Io: [energy per chip / interference wave power per unit frequency]) of a common pilot signal (CPICH: Common Pilot Channel). The transmission information is supplied to the transmission unit 20 and subjected to modulation processing, and is transmitted to the base station via the DUP 11.

Referring to FIG. 2, the received wave from the antenna is input to the receiving section 22 via the transmission / reception duplexer (DUP) 21, is subjected to demodulation processing and the like and is supplied to the information separating section 23. The information separating unit 23 separates the user information from various control information and outputs the control information to the transmission control unit 24.
The transmission control unit 24 creates user data of the mobile station whose transmission power is determined from the quality information, which is the control information supplied from the information separation unit 23, and control information to be notified to the mobile station, and supplies it to the combining unit 25. Then, the synthesizing unit 25 generates the transmission information. The transmission information is supplied to the transmission unit 26, subjected to modulation processing and the like, and transmitted to the mobile station via the DUP 21.

Next, the operation of this embodiment will be described in detail with reference to FIGS. 3 and 4 are flowcharts showing the operation of the embodiment of the present invention. FIG. 3 is a flowchart showing the processing operation of the base station, and the processing operation of the base station which gives the advance notice of data transmission, which is the control information to be notified to the mobile station, and the end notification of data transmission is realized. FIG. 4 is a flowchart showing the operation of the mobile station,
The processing operation of the mobile station that reports the quality information to the base station and releases the uplink quality control channel is realized.

In this embodiment, the mobile station transmits the quality information after receiving the data transmission advance notice transmitted by the base station, and the mobile station transmits the quality information after receiving the data transmission end notice. Since it is stopped, the battery operating time of the mobile station is improved. Furthermore, if you stop sending quality information,
Since the uplink quality control channel is released, only some of the mobile stations set the UL HS-DPCCH, which can reduce the uplink interference power and increase the uplink radio channel capacity. it can.

Referring to FIG. 3, the base station determines whether the packet data requested by the mobile station has arrived at itself (S
1) If it has arrived, check the packet schedule of the data to be transmitted to the mobile station and check the dedicated channel DL DPC.
H is used to give advance notice of data transmission to the mobile station (S
2). When the packet data arrives at itself, it means that the data requested by the mobile station has arrived at the buffer of the base station from the provider. There is a Web server as an example of the providing destination.
Next, when transmitting the packet data, it is judged whether the packet data to be transmitted is the last packet data to be transmitted to the mobile station (S3), and if it is the last, the dedicated channel DL DPC
H is used to notify the mobile station of the end of data transmission (S
4).

Referring to FIG. 4, the mobile station determines whether a packet data request has been made (S101), and if so, sets the channel for communicating the user and control information,
Performed with the base station or the base station control device (S10
2). Next, the mobile station determines whether or not the data transmission advance notice is received from the base station (S103), and if it is received, the quality information is transmitted to the base station (S104). Next, it is determined whether or not a data transmission end notification has been received from the base station (S10
5) If received, it is determined whether or not new packet data is requested (S106). When it is confirmed that the predetermined time has not occurred (S107), the set uplink (hereinafter, UL [Uplink]) HS-DPCCH is released (S108).

5 and 6 are conceptual diagrams of the principle of this embodiment. In the HSDPA method, UL DPCH and UL HS-D are used to control data transmission from the base station to the mobile station.
Set the PCCH. In this embodiment, the control data of the UL DPCH is not used in the transmission control of the quality information, so the UL DPCH is not shown in the figure.

FIG. 5 shows a state in which the mobile station transmits the quality information at a predetermined timing after receiving the advance notice of data transmission. In this embodiment (also in other embodiments below), the transmission interval is set to 3 TTI (Tr
Although it is constant with an ansmission Time Interval), it may be constant or variable in implementation. FIG. 6 shows how the mobile station stops transmitting quality information after receiving the data transmission end notification. In this embodiment, UL HS-DP
Although the CCH is released and the transmission of the quality information is stopped, the transmission of the quality information may be stopped by reducing the transmission power.

FIG. 7 shows D for sending a notice of data transmission.
L DPCH (Dedicated Physical Channel) and UL HS-DPCCH (HS-DPCCH: H) for transmitting quality information.
An example of each format of ighSpeed-Dedicated Physical Control Channel) is shown. DL DPCH is DPCCH
And DPDCH (Dedicated Physical Data Channel). DL DPCH is transmission power control information (TPC).
And TFCI (Transport Format Combination Indicat
or), a pilot (Pilot) signal (individual), and user data. TFCI is the upstream DP
It indicates the number of transport channels multiplexed in the DCH reception frame and information on the transport format used by each transport channel. In the embodiment of the present invention, a part of the TFCI area is used as a bit for data transmission notice. DL D
A DL shared channel may be used instead of the PCH.

UL HS-DPCCH is an uplink control channel used for transmitting quality information and HARQ ACK / NACK. In the format of the embodiment, quality information, HARQ ACK / NACK and other communication data are used. The contents of data change every 1 TTI in this order. Here, HARQ refers to a method in which a mobile station inspects a received symbol to determine whether to retransmit it. If the reception is successful, ACK is sent.

Next, a second embodiment of the present invention will be described. In the first embodiment, the base station notifies the end of data transmission in S4 of the flowchart of FIG. 3, but this second embodiment does not. In the second embodiment, when the mobile station determines that the last packet data has been received, it stops reporting quality information. In the present embodiment, after receiving the data transmission advance notice transmitted by the base station, the mobile station transmits the quality information, and after receiving the last packet data, the mobile station stops transmitting the quality information. The battery operating time of the mobile station is improved. Further, when the transmission of the quality information is stopped, the uplink quality control channel is released, so that only some of the mobile stations set the UL HS-DPCCH, and the uplink interference power is reduced. It is possible to reduce and increase the uplink wireless line capacity.

8 and 9 are flow charts showing the operation of the second embodiment. FIG. 8 is a flowchart showing the operation of the base station, which is obtained by deleting S4 from the flowchart of FIG. 3 of the first embodiment. That is, the control information to be notified to the mobile station is only a data transmission advance notice. FIG. 9 is a flowchart showing the operation of the mobile station, and S105 of the flowchart of FIG. 4 of the first embodiment.
The process is changed to S111. That is,
After transmitting the quality information (S104), it is determined whether the last packet data has been received (S111).
It is determined whether new packet data is requested (S
106).

FIG. 10 shows a conceptual diagram of the principle of this second embodiment. FIG. 10 shows a state in which the mobile station stops transmitting quality information after receiving all packet data. In this embodiment, the UL HS-DPCCH is released to stop the transmission of quality information, but the transmission of quality information may be stopped by reducing the transmission power.

Next, a third embodiment of the present invention will be described.
In the above second embodiment, S10 of the flowchart of FIG.
In No. 3, it is determined whether the mobile station has received the advance notice of data transmission from the base station. In the third embodiment, this is not done, and the UL DPCH is transmitted at the same time as the transmission of the quality information.
Indication information (hereinafter,
Send Feedback Indicator). Mobile station is Feedback I
By transmitting the ndicator, the base station can determine that the mobile station is transmitting the quality information.

In this embodiment, the mobile station transmits the quality information at a predetermined timing after setting the channel with the base station, and after receiving the last packet data, the mobile station transmits the quality information. The battery life of the mobile station is improved because it is stopped. Further, when the transmission of the quality information is stopped, the uplink quality control channel is released, so that only some of the mobile stations among the many mobile stations have UL HS-DPCCH.
Therefore, the uplink interference power can be reduced and the uplink radio channel capacity can be increased. Furthermore, when sending quality information, the Feedback Indicator is sent, so
The base station can certainly receive the quality information.

11 and 12 are flow charts showing the operation of the third embodiment. FIG. 11 is a flowchart showing the operation of the base station, which is obtained by deleting S2 from the flowchart of FIG. 8 of the second embodiment. That is, the base station does not notify the mobile station of the control information. It is determined whether the packet data requested by the mobile station has arrived (S1), and if it has arrived, the data is transmitted to the mobile station according to the scheduling, and it is determined whether the packet data to be transmitted is the last packet (S3). If it is the last, the process ends.

FIG. 12 is a flowchart showing the operation of the mobile station. The processing of S103 and the processing of S104 in the flowchart of FIG. 9 of the second embodiment are executed in S121 and S12, respectively.
It has been changed to 2. That is, the mobile station waits for a predetermined time to elapse after performing channel setting with the base station (S121), and then the FeedbackIn
indicator and transmission quality information are transmitted at the same time (S12).
2).

13 and 14 are conceptual diagrams of the principle of this embodiment. The UL DPCH and UL HS-DPCCH may be set by code multiplexing or may be set by time division.
FIG. 13 shows a state in which the mobile station transmits quality information at predetermined intervals from a predetermined timing, and simultaneously transmits quality information and feedback. In the embodiment, immediately after the base station receives the quality information, the packet data is continuously transmitted to the mobile station. However, the transmission start time may be delayed by a predetermined timing, or the packet data may be transmitted. It may be transmitted discontinuously.

FIG. 14 shows how the mobile station stops transmitting quality information after receiving all packet data.
Since we will stop sending quality information, Feedba will send at the same time.
It also shows that the transmission of ck Indicator is stopped. In this embodiment, the UL HS-DPCCH is released to stop the transmission of the quality information, but the transmission of the quality information may be stopped by reducing the transmission power.

UL HS- for transmitting quality information in FIG.
UL DP for transmitting DPCCH and Feedback Indicator
Each format of CCH is shown. UL HS-DPCC
H is the same as in FIG. 7 of the first embodiment. UL DPC
CH is a Pilot signal (individual), TFCI, feedback information (FBI), transmission power control information (TP
C) and. In this embodiment, a part of the FBI area is used as a bit of Feedback Indicator. U
A UL shared channel may be used instead of the L DPCH.

Next, a fourth embodiment of the present invention will be described.
The fourth embodiment is a combination of the processes of the first and third embodiments. That is, the base station sends a notice of data transmission and a notice of end of data transmission to the mobile station.
Send ck Indicator.

In this embodiment, the mobile station transmits the quality information after receiving the data transmission advance notice transmitted by the base station, and the mobile station transmits the quality information after receiving the data transmission end notice. Since it is stopped, the battery operating time of the mobile station is improved. Furthermore, if you stop sending quality information,
Since the uplink quality control channel is released, only some of the mobile stations set the UL HS-DPCCH, which can reduce the uplink interference power and increase the uplink radio channel capacity. it can. Further, when transmitting the quality information, the Feedback Indicator is transmitted, so that the base station can surely receive the quality information.

The operation of the base station of this embodiment is the same as that of FIG. 3 of the first embodiment. FIG. 16 is a flowchart showing the operation of the mobile station of this embodiment. FIG. 16 shows the processing of S121 of the flowchart of FIG. 12 of the third embodiment in S131,
The processing of S110 is changed to S132. That is, after setting the channel (S10
2) The mobile station determines whether it has received the data transmission advance notice from the base station (S131).
Send Feedback Indicator and quality information at the same time (S1)
22). Next, it is determined whether a data transmission end notification has been received from the base station (S132), and if it has been received, it is determined whether new packet data has been requested (S10).
6).

17 and 18 are conceptual diagrams of the principle of this embodiment. FIG. 17 shows a state in which the mobile station transmits quality information at predetermined intervals after receiving a data transmission advance notice and at the same time transmits quality information and a Feedback Indicator. FIG. 18 shows a state in which the mobile station stops transmitting quality information after receiving a data transmission end notification. Since the transmission of the quality information is stopped, the transmission of the Feedback Indicator which is transmitted at the same time is also stopped. In this embodiment, the UL HS-DPCCH is released to stop the transmission of quality information, but the transmission of quality information may be stopped by reducing the transmission power.

Next, a fifth embodiment of the present invention will be described.
In the fourth embodiment, the base station notifies the end of data transmission in S4 of the flowchart of FIG.
This is not done in this fifth embodiment. In the fifth embodiment, when the mobile station determines that the last packet data has been received, it stops reporting quality information.

In this embodiment, the mobile station transmits the quality information after receiving the data transmission advance notice transmitted by the base station, and the mobile station stops transmitting the quality information after receiving the last packet data. Therefore, the battery operating time of the mobile station is improved. Furthermore, if you stop sending quality information,
Since the uplink quality control channel is released, only some of the mobile stations set the UL HS-DPCCH, which can reduce the uplink interference power and increase the uplink radio channel capacity. it can. Further, when transmitting the quality information, the Feedback Indicator is transmitted, so that the base station can surely receive the quality information. The operation of the base station of this embodiment is the same as that of the flowchart of FIG. 8 of the second embodiment.

FIG. 19 is a flow chart showing the operation of the mobile station of this embodiment. In FIG. 19, the process of S132 of the flowchart of FIG. 16 of the fourth embodiment is changed to S141. That is, the feedback indicator is sent to the base station.
And the quality information are transmitted at the same time (S122), it is determined whether the last packet has been received (S141), and if it is the last, it is determined whether new packet data is requested (S106).

FIG. 20 shows a conceptual diagram of the principle of this embodiment.
FIG. 20 shows how the mobile station stops transmitting quality information after receiving all packet data. Feedback Indicat is sent at the same time because it stops sending quality information.
It also shows that the transmission of or is stopped. In this embodiment,
Although the UL HS-DPCCH is released to stop the transmission of the quality information, the transmission of the quality information may be stopped by reducing the transmission power.

Next, a sixth embodiment of the present invention will be described.
In this embodiment, the base station transmits a threshold for transmitting the quality information to the mobile station as control information. The mobile station measures its own quality information and reports the quality information if the reception quality is equal to or above the threshold value. At that time, at the same time as the quality information,
Send Feedback Indicator as well.

In this embodiment, the mobile station transmits the quality information at a predetermined timing after setting the channel with the base station, and after receiving the last packet data, the mobile station transmits the quality information. The battery life of the mobile station is improved because it is stopped. Further, when the transmission of the quality information is stopped, the uplink quality control channel is released, so that only some of the mobile stations among the many mobile stations have UL HS-DPCCH.
Therefore, the uplink interference power can be reduced and the uplink radio channel capacity can be increased. Furthermore, when sending quality information, the Feedback Indicator is sent, so
The base station can certainly receive the quality information. Furthermore, since the quality information is reported when the reception quality of the mobile station is equal to or higher than the threshold value, it is possible to implement a high-speed transmission packet service with a low error rate.

21 and 22 are flow charts showing the operation of this embodiment. FIG. 21 is a flowchart showing the operation of the base station, which realizes the processing operation of setting the threshold value for the mobile station to transmit the quality information in the base station. FIG. 22 is a flowchart showing the operation of the mobile station. Based on the threshold value received from the base station, when the reception quality is equal to or higher than the threshold value, the processing operation of the mobile station that transmits the quality information to the base station is realized. It is a thing.

Referring to FIG. 21, the base station sets a reception quality threshold value P, an offset ΔP for adjusting the threshold value, and a threshold value N for the number of mobile stations as initial values, and transmits them to each mobile station (S201). Next, quality information is received from each mobile station (S202), and it is determined whether the number of mobile stations reporting the reception quality exceeds N (S203). If the number of reported mobile stations exceeds N, the quality information of the mobile station having the Nth best reception quality is newly set as the threshold P, and the threshold P is increased so that the number of reported mobile stations becomes N. Transmit to each mobile station (S20
4). On the other hand, if the number of reported mobile stations is less than N,
P-ΔP is newly set as P and transmitted to each mobile station (S205).

By doing so, the number of mobile stations reporting quality information to the base station is controlled so as to be equal to the predetermined value N. Since only the UL HS-DPCCH is configured, it is possible to reduce the power of the uplink interference wave and increase the uplink radio channel capacity.

FIG. 22 shows a modification of the processing of S122 of the flowchart of FIG. 12 of the third embodiment to S151 and S152. That is, the mobile station waits for a predetermined time to elapse after performing channel setting with the base station (S121), and then measures the reception quality (S151).
It is judged whether the reception quality is equal to or higher than the threshold P notified from the base station (S152).
ck Indicator and transmission quality information are transmitted simultaneously (S12).
2).

FIG. 23 shows a conceptual diagram of the principle of this embodiment.
FIG. 23 shows how the mobile station compares the reception quality with the threshold value P and transmits the quality information and the Feedback Indicator to the base station at predetermined intervals when the quality information exceeds or equals the threshold value. There is. As shown in FIG. 23, it is understood that quality information is not reported at first because the reception quality is smaller than the threshold P, but the reception quality is reported after the reception quality exceeds the threshold P.

In this embodiment, the threshold value is determined as shown in the flowchart of FIG. 21, but other threshold values may be determined.
For example, there is a method that the base station controller decides,
A value obtained by subtracting a certain value from the average value of the reception quality of all mobile stations reported to the base station may be calculated and used as the threshold value.

DL DPC for transmitting threshold information in FIG.
H, HS-DPCCH that transmits quality information, and Feedback
Each format of UL DPCCH which transmits Indicator is shown. In the embodiment of the present invention, a part of the TFCI area is used for transmitting the threshold information P. A shared channel may be used instead of the DL DPCH. UL HS-
DPCCH and UL DPCCH are shown in FIG. 1 of the third embodiment.
Same as 5.

Next, a seventh embodiment of the present invention will be described.
In this embodiment, a base station transmits instruction information (hereinafter, Request Indicator) requesting a mobile station to report data quality information. When the mobile station receives Request Indicator ON continuously a predetermined number of times (hereinafter, Non times), UL HS-
The quality information is transmitted to the base station on the DPCCH. Further, when the mobile station receives the Request Indicator OFF continuously a predetermined number of times (hereinafter, Noff times), the mobile station stops transmitting the quality information.

In this embodiment, the Request sent by the base station
Since the indicator receives the Indicator to determine whether to start or stop the transmission of the quality information, the mobile station can transmit the quality information only when the base station needs it, and the battery operating time of the mobile station is improved. Furthermore, when the transmission of the quality information is stopped, the uplink quality control channel is released, so that only some of the mobile stations have UL HS-DPCC.
Since H is set, the uplink interference power can be reduced and the uplink radio line capacity can be increased.

In this embodiment, the base station controller for controlling the base station sets the number of times Non and Noff, and the DL DPCH
When setting, the base station notifies the mobile station. In this embodiment, Non = 1 time and Noff = 5 times. Non <Noff
By setting, if the base station needs the quality information, the mobile station can report the quality information promptly.
Even when receiving with the quest indicator turned off, the probability of continuous erroneous reception is low, and therefore it is possible to prevent erroneously stopping the reporting of quality information.

25 and 26 are flow charts showing the operation of this embodiment. From Figure 25, Request Indicato
The processing operation of the base station that sets r on and off can be realized. Further, according to FIG. 26, the Request received from the base station
The processing operation of the mobile station that starts and stops the transmission of quality information can be realized based on the Indicator.

Referring to FIG. 25, the base station sets Request Indicator to OFF in the initial state (S11).
Next, the base station determines whether the packet data requested by the mobile station has arrived at itself (S12), and if it has arrived, it checks the packet schedule of the data to be transmitted to the mobile station (S13). From the confirmation result, it is determined whether or not there is a plan to transmit packet data to the mobile station within a predetermined time (S14). If yes, the Request Indicator is set to ON (S15). If no, the Request Indicator is set. It is set to off (S16). That is, Reques according to the schedule of packet data transmission (according to packet data transmission)
The t Indicator is turned on and off. Request
After setting the Indicator, it is determined whether the packet data to be transmitted is the last packet data to be transmitted to the mobile station (S1
7) If the last, Reques to be transmitted to the mobile station from the next
The t Indicator is set to off (S18). That is,
Request Indicator depending on the last packet data transmission
To turn off.

FIG. 26 shows S10 of FIG. 9 in the second embodiment.
The processing of No. 3 is changed to S161 and S162, respectively. That is, after setting the channel (S10
2) The mobile station determines whether or not the Request Indicator is received in the ON state (S161), and if it is ON, the quality information is transmitted to the base station (S104). If it is OFF, OFF is received and it is judged whether it is 5 times or more in succession (S162). If it is less than 5 times, quality information is transmitted to the base station (S104).

FIG. 27 shows a conceptual diagram of the principle of this embodiment.
Fig. 27 shows the case when Request Indicator is turned on and
When the Request Indicator is off and less than 5 times are received, the quality information is transmitted to the base station at a predetermined interval. Further, it shows that the transmission of the quality information is stopped when the Request Indicator is turned off and is received five times or more.
DL DPCH for transmitting Request Indicator in FIG.
And the respective formats of HS-DPCCH for transmitting the quality information. In the embodiment of the present invention, a part of the TFCI area is used as a bit for Request Indicator.
A DL shared channel may be used instead of the LD DPCH. UL HS-DPCCH is the same as in FIG. 7 of the first embodiment.

Next, an eighth embodiment of the present invention will be described.
In this embodiment, the Feedback Indicator is transmitted at the same time as the quality information is transmitted in the seventh embodiment. In the present embodiment, since the base station receives the Request Indicator transmitted and determines the start and stop of the transmission of the quality information, the mobile station can transmit the quality information only when the base station requires, and The battery operating time of the mobile station is improved.
Further, when the transmission of the quality information is stopped, the uplink quality control channel is released, so that only some of the mobile stations set the UL HS-DPCCH, and the uplink interference power is reduced. It is possible to reduce and increase the uplink wireless line capacity. In addition, when sending quality information,
Since the edback indicator is transmitted, the base station can reliably receive the quality information. The operation of the base station is the same as in FIG. 25 of the seventh embodiment.

FIG. 29 is a flow chart showing the operation of the mobile station of this embodiment. In FIG. 29, referring to FIG. 26 of the seventh embodiment, the process of S104 is changed to S171. That is, the Feedback Indicator and the transmission quality information are simultaneously transmitted to the base station (S171). FIG. 30 shows a conceptual diagram of the principle of this embodiment. In FIG. 30, referring to FIG. 27 of the seventh embodiment, when UL DPCCH is added and the mobile station transmits the quality information, the Feedback Indic is performed at the same time.
It shows how the ator is sent.

The processing of the flowcharts showing the operations of the base station and the mobile station in each of the above-described embodiments is configured such that these processing procedures are stored in a recording medium in advance and are read and executed by a computer. It is clear that you can also do it.

[0077]

As described above, according to the present invention, the following effects can be obtained. The first effect is that the power consumption of the mobile station is reduced and the operating time of the battery is improved. The reason is that the mobile station can stop the transmission of the quality information to the base station and stop the measurement of the reception quality of the pilot signal.

The second effect is that the interference wave power of the uplink (UL) can be reduced and the uplink radio line capacity can be increased. The reason is that the transmission time rate of UL HS-DPCCH is significantly reduced.

The third effect is that the base station can receive the quality information from the mobile station at a necessary timing. The reason is that the UL HS-DPCCH is set only when necessary and the quality information is transmitted to the mobile station.

[Brief description of drawings]

FIG. 1 is a block diagram of a mobile station according to an embodiment of the present invention.

FIG. 2 is a block diagram of a base station according to an embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of the base station according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of the mobile station according to the first embodiment of the present invention.

FIG. 5 is a diagram for explaining the principle of the first embodiment.

FIG. 6 is a diagram for explaining the principle of the first embodiment.

FIG. 7: DL DPCH and UL used in the first embodiment
It is a figure which shows each format example of HS-DPCCH.

FIG. 8 is a flowchart showing an operation of the base station according to the second embodiment of the present invention.

FIG. 9 is a flowchart showing an operation of the mobile station according to the second embodiment of the present invention.

FIG. 10 is a diagram for explaining the principle of the second embodiment.

FIG. 11 is a flowchart showing an operation of the base station according to the third embodiment of the present invention.

FIG. 12 is a flowchart showing an operation of the mobile station according to the third embodiment of the present invention.

FIG. 13 is a diagram for explaining the principle of the third embodiment.

FIG. 14 is a diagram for explaining the principle of the third embodiment.

FIG. 15 is a UL HS-DPCC used in the third embodiment.
It is a figure which shows each format of H and UL DPCCH.

FIG. 16 is a flowchart showing an operation of the mobile station according to the fourth embodiment of the present invention.

FIG. 17 is a diagram for explaining the principle of the fourth embodiment.

FIG. 18 is a diagram for explaining the principle of the fourth embodiment.

FIG. 19 is a flowchart showing an operation of the mobile station according to the fifth embodiment of the present invention.

FIG. 20 is a diagram for explaining the principle of the fifth embodiment.

FIG. 21 is a flowchart showing an operation of the base station according to the sixth embodiment of the present invention.

FIG. 22 is a flowchart showing an operation of the mobile station according to the sixth embodiment of the present invention.

FIG. 23 is a diagram for explaining the principle of the sixth embodiment.

FIG. 24 is a DL DPCH, UL in the sixth embodiment.
It is a figure which shows each format example of HS-DPCCH and UL DPCCH.

FIG. 25 is a flowchart showing an operation of the base station according to the seventh embodiment of the present invention.

FIG. 26 is a flowchart showing an operation of the mobile station according to the seventh embodiment of the present invention.

FIG. 27 is a diagram for explaining the principle of the seventh embodiment.

FIG. 28 is a DL DPCH, UL in the seventh embodiment.
It is a figure which shows each format example of HS-DPCCH.

FIG. 29 is a flowchart showing an operation of the mobile station according to the eighth embodiment of the present invention.

FIG. 30 is a diagram for explaining the principle of the eighth embodiment.

[Explanation of symbols]

11,21 Transmitter / receiver 12,22 Receiver 13 channel separator 14 DPCCH detector 15, 24 Transmission control unit 16 CPICH detector 17 switch 18 Power measurement unit 19,25 Synthesis Department 20,26 Transmitter

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naoto Ishii             5-7 Shiba 5-1, Minato-ku, Tokyo NEC Corporation             Inside the company (72) Inventor Takashi Mochizuki             5-7 Shiba 5-1, Minato-ku, Tokyo NEC Corporation             Inside the company (72) Inventor Toshifumi Sato             5-7 Shiba 5-1, Minato-ku, Tokyo NEC Corporation             Inside the company (72) Inventor Genya Iwasaki             5-7 Shiba 5-1, Minato-ku, Tokyo NEC Corporation             Inside the company F term (reference) 5K034 AA15 DD02 EE03 HH11 NN22                 5K067 AA03 AA13 AA43 BB04 CC04                       CC08 CC10 DD44 DD45 EE02                       EE10 FF16 HH22 JJ13

Claims (30)

[Claims] 1. A base station and a mobile station are included, and the base station is
Transmits a downlink signal, the mobile station sets an uplink control channel with the base station, measures the reception quality of the downlink signal and obtains quality information according to the reception quality by using the uplink control channel. A mobile communication system configured to perform transmission control of data to a mobile station using the quality information, wherein the base station sets a downlink control channel with the mobile station. And transmitting a data transmission notification to the mobile station, the mobile station transmitting the quality information to the base station at a predetermined interval in response to the data transmission notification during the uplink control channel setting. A mobile communication system comprising means for initiating. 2. The mobile station according to claim 1, further comprising means for stopping transmission of the quality information in response to the data transmission notification during setting of the uplink control channel. Mobile communication system. 3. A base station and a mobile station, the base station comprising:
Transmits a downlink signal, the mobile station sets an uplink control channel with the base station, measures the reception quality of the downlink signal and obtains quality information according to the reception quality by using the uplink control channel. A mobile communication system configured to perform transmission control of data to a mobile station using the quality information, wherein the mobile station responds to reception of data, A mobile communication system comprising: means for transmitting the quality information at intervals; and means for transmitting instruction information indicating that the quality information is being transmitted using the uplink control channel. 4. The mobile communication according to claim 1, wherein the mobile station includes means for stopping transmission of the quality information in response to completion of data reception. system. 5. A base station and a mobile station are included, and the base station is
Transmits a downlink signal, the mobile station sets an uplink control channel with the base station, measures the reception quality of the downlink signal and obtains quality information according to the reception quality by using the uplink control channel. A mobile communication system configured to perform transmission control of data to a mobile station using the quality information, wherein the base station sets a downlink control channel with the mobile station. And a means for notifying the mobile station of a threshold value, wherein the mobile station responds to a comparison result of the threshold value and the reception quality, and means for controlling the transmission of the quality information to the base station at a predetermined interval. A mobile communication system comprising: 6. A base station and a mobile station are included, and the base station is
Transmits a downlink signal, the mobile station sets an uplink control channel with the base station, measures the reception quality of the downlink signal and obtains quality information according to the reception quality by using the uplink control channel. A mobile communication system configured to perform transmission control of data to a mobile station using the quality information, wherein the base station sets a downlink control channel with the mobile station. And a means for transmitting instruction information indicating that the quality information is requested to be reported to the mobile station in response to data transmission to the mobile station, the mobile station responding to the instruction information, the base station. A mobile communication system comprising means for transmitting the quality information to a station at predetermined intervals. 7. The base station includes means for transmitting, to the mobile station in response to data transmission to the mobile station, instruction information indicating a request to stop reporting the quality information, and the mobile station 7. The mobile communication system according to claim 6, further comprising means for stopping transmission of the quality information to the base station in response to the instruction information. 8. The mobile communication system according to claim 1, wherein the predetermined interval is variable. 9. A base station and a mobile station are included, and the base station is
Transmits a downlink signal, the mobile station sets an uplink control channel with the base station, measures the reception quality of the downlink signal and obtains quality information according to the reception quality by using the uplink control channel. To the mobile station, wherein the base station performs transmission control of data to the mobile station by using the quality information, wherein the base station controls the mobile station and the downlink. Including a step of setting a channel and transmitting a data transmission notification to the mobile station, wherein the mobile station responds to the data transmission notification during the uplink control channel setting, and at a predetermined interval to the base station. A communication control method comprising the step of starting transmission of quality information. 10. The mobile station according to claim 9, further comprising the step of stopping the transmission of the quality information in response to the data transmission notification during the setup of the uplink control channel. Communication control method. 11. A base station and a mobile station are included, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures the reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A communication control method, wherein the mobile station responds to the reception of data, transmitting the quality information at a predetermined interval, and transmitting the quality information using the uplink control channel. And a step of transmitting instruction information indicating the communication control method. 12. The communication control method according to claim 9, further comprising the step of stopping the transmission of the quality information in response to the end of data reception by the mobile station. 13. A base station and a mobile station are included, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures the reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A communication control method, wherein the base station includes a step of setting a downlink control channel with the mobile station and notifying a threshold value to the mobile station, wherein the mobile station is a comparison result of the threshold value and the reception quality. In response, the method includes a step of controlling transmission of the quality information to the base station at a predetermined interval. 14. A base station and a mobile station are included, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures the reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. An instruction indicating that the base station sets a downlink control channel with the mobile station and requests the mobile station to report the quality information in response to data transmission to the mobile station. A communication control method, comprising: transmitting information, wherein the mobile station transmits the quality information to the base station at predetermined intervals in response to the instruction information. 15. The base station includes a step of transmitting, to the mobile station in response to data transmission to the mobile station, instruction information indicating that the mobile station is requested to stop reporting the quality information. 15. The communication control method according to claim 14, further comprising the step of stopping transmission of the quality information to the base station in response to the instruction information. 16. The communication control method according to claim 9, wherein the predetermined interval is variable. 17. A base station and a mobile station are included, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures the reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A mobile station, setting a downlink control channel with the base station, means for receiving a data transmission notice from the base station, and during the uplink control channel setting, in response to the data transmission notice, the Means for starting transmission of the quality information to the base station at predetermined intervals. 18. The mobile station according to claim 17, further comprising means for stopping transmission of the quality information in response to the data transmission notification. 19. A base station and a mobile station are included, the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures the reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A mobile station, in response to receiving data, means for transmitting the quality information at predetermined intervals, and instruction information indicating that the quality information is being transmitted using the uplink control channel. And a mobile station. 20. The mobile station according to claim 17, further comprising means for stopping transmission of the quality information in response to completion of data reception. 21. A base station and a mobile station are included, wherein the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A mobile station, setting the downlink control channel with the base station, from the base station, means for receiving a threshold, in response to the comparison result of the threshold and the reception quality, to the base station A mobile station comprising means for controlling transmission of quality information at predetermined intervals. 22. A base station and a mobile station are included, wherein the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures the reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A mobile station that receives the instruction information from the base station that sets the downlink control channel with the base station and transmits instruction information indicating that the quality information report is requested in response to data transmission. A mobile station comprising means and means for transmitting the quality information to the base station at predetermined intervals in response to the instruction information. 23. Responding to the instruction information, comprising means for receiving the instruction information from the base station that transmits the instruction information indicating that the quality information report is requested to be stopped in response to data transmission. 23. The mobile station according to claim 22, further comprising: means for stopping transmission of the quality information to the base station. 24. The mobile station according to claim 17, wherein the predetermined interval is variable. 25. A base station and a mobile station are included, wherein the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures the reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A base station, which sets a downlink control channel with the mobile station and transmits a data transmission notification to the mobile station; and during the uplink control channel setting, in response to the data transmission notification at predetermined intervals. Means for receiving the quality information from the mobile station transmitting the quality information. 26. A base station and a mobile station are included, wherein the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures the reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A base station, means for receiving the quality information from the mobile station at predetermined intervals, and instruction information indicating that the quality information is being transmitted using the uplink control channel from the mobile station. A base station comprising means for receiving. 27. A base station and a mobile station are included, wherein the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures reception quality of the downlink signal. In the mobile communication system, the quality information according to the reception quality is transmitted to the base station using the uplink control channel, and the base station controls data transmission to the mobile station using the quality information. A base station, means for notifying the mobile station of a threshold by setting a downlink control channel with the mobile station, and transmitting the quality information at predetermined intervals in response to a comparison result of the threshold and the reception quality Means for receiving the quality information from the mobile station. 28. A base station and a mobile station are included, wherein the base station transmits a downlink signal, the mobile station sets an uplink control channel with the base station, and measures reception quality of the downlink signal. The quality information according to the reception quality is transmitted to the base station at a predetermined interval using the uplink control channel, and the base station controls transmission of data to the mobile station using the quality information. A base station in a mobile communication system, which sets the mobile station and a downlink control channel, and provides instruction information indicating that the mobile station is requested to report the quality information in response to data transmission to the mobile station. A base station comprising means for transmitting and means for receiving the quality information from the mobile station. 29. The method according to claim 28, further comprising means for transmitting instruction information indicating that the mobile station is requested to stop reporting the quality information in response to data transmission to the mobile station. Base station. 30. The base station according to claim 25, wherein the predetermined interval is variable.