KR20040064938A - Transmitting and receiving system and method for a reverse control channel in a mobile communication system - Google Patents

Abstract

PURPOSE: A method for transceiving reverse control channel data in a mobile communication system and a method therefor are provided to enable a terminal to transceive control channel data of traffic channel data which is transmitted to a base station in at least one of time sections, thereby minimizing an interference caused by the control channel data. CONSTITUTION: A base station receives control channel data to reversely encode the data(701). The base station performs a CRC(Cyclic Redundancy Code) check process for a reversely encoded signal(702). The base station decides whether a CRC pass is generated(703). If so, the base station uses the control channel data when performing receiver resource assigning and power control target pilot Ep/Nt controlling functions to effectively receive traffic channel data(704). The base station decides whether traffic transmission is stopped(705). If so, the base station decides that the traffic channel data is not transmitted in a next frame(707).

Description

TRANSMITTING AND RECEIVING SYSTEM AND METHOD FOR A REVERSE CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM}

The present invention relates to an apparatus and method for efficiently transmitting and receiving control channel data of traffic channel data transmitted by a terminal in a reverse direction in a mobile communication system.

In general, a mobile communication system may be classified into a form supporting only a voice service and a form supporting only a data service. A typical example of such a system is a code division multiple access (CDMA) mobile communication system. Currently, a system supporting only voice service in a CDMA system is a system according to the IS-95 standard. However, as communication technology develops along with user demands, mobile communication systems are also being developed to support data services. For example, CDMA 2000 is a mobile communication system proposed to simultaneously support voice service and high speed data service. Also, 1xEVDO is a mobile communication system proposed to support only high speed data service.

In a mobile communication system, data transmission is generally classified into a direction from a base station to a mobile terminal and a direction from a mobile terminal to a base station. Typically, the direction from the base station to the mobile terminal is referred to as 'forward', and the direction from the mobile terminal to the base station is referred to as 'reverse'.

Next, a method of transmitting traffic channel data and control information in reverse in a mobile communication system such as 1xEVDO will be described. Traffic channel data transmitted in the mobile communication system such as 1xEVDO is transmitted in one of 0kbps, 9.6kbps, 19.2kbps, 38.4kbps, 76.8kbps and 153.6kbps. The base station controls only the maximum data rate of traffic channel data transmitted by the mobile station, and the actual data rate of 0kbps ~ maximum data rate is determined by the mobile station.

Therefore, a reverse rate indicator channel (hereinafter referred to as 'R-RICH') is transmitted to inform the base station of the data transmission speed of the mobile station. As shown in FIG. 1, the R-RICH is transmitted every 20ms transmission interval and is transmitted in the same time interval as the relevant traffic channel. That is, the control information on the traffic channel data transmitted in the i-th frame is transmitted in the same time interval as in FIG.

In FIG. 1, the R-RICH transmitted together with the traffic channel data consists of 3 bits of information. As shown in Table 1, the 3 bits of information on the R-RICH are mapped to the data transmission rate.

Data rate RRI Symbol 0 kbps 000 9.6 kbps 001 19.2 kbps 010 38.4 kbps 011 76.8 kbps 100 153.6 kbps 101 reserved 110 reserved 111

In order to receive the traffic channel data for the i-th frame, the base station receiving the R-RICH and traffic channel data of FIG. 1 first receives information contained in the R-RICH and then stores the traffic channel data. Despreading and channel data decoding are performed. The problem with this method is that since the data transmission speed of the traffic channel can be known only after receiving the R-RICH, the corresponding traffic channel can support the base station receiver resources such as the memory from the i-1 frame for the traffic for the i-th frame. It should be allocated based on the maximum data rate. That is, when the maximum data rate supported by the traffic channel of the i-th frame is 153.6 kbps, the base station should allocate a base station receiver resource corresponding to 153.6 kbps even if the mobile station transmits at a data rate of 9.6 kbps in the i-th frame.

As shown in FIG. 1, transmitting traffic channel data and corresponding control information in the same time interval is not suitable for efficiently operating reverse power control. In general, pilot signals required for channel correction vary according to data rates. However, when transmitting the traffic channel data and the corresponding control information in the same time interval as shown in FIG. 1, the base station can know that the data transmission rate of the traffic channel is changed after receiving the control information transmitted in the corresponding frame. It is impossible to properly control power of the pilot signal.

FIG. 2 is a diagram for explaining a problem of power control that may occur when traffic channel data and corresponding control information are transmitted in the same time interval as in 1xEVDO. In FIG. 2, the mobile station transmits traffic channel data at 76.8 kbps in the i-th frame, and then changes it to 9.6 kbps in the i + 1 th frame. In this case, since the base station knows that 9.6 kbps has been transmitted after the i + 1th frame has been completely received or in the corresponding time interval, the control information of the i + 1th frame is loaded from the beginning of the i + 1th frame. You will receive more pilot signals than necessary until the RICH is fully received. Receiving such an unnecessarily large pilot signal may cause unnecessary interference in the reverse direction, thereby reducing system capacity.

Contrary to the case of FIG. 2, when the data transmission rate of the traffic channel is increased, the reception strength of the pilot signal may be smaller than necessary to perform channel compensation. In this case, the reception performance of the traffic channel may be deteriorated, and as a result, system capacity may be reduced.

Another problem of the control information of the 1xEVDO traffic is that the 3-bit control information should be transmitted at all time intervals and it is difficult to detect an error to determine whether there is an error in the corresponding information after receiving it.

It is therefore an object of the present invention to provide an apparatus and method for solving the above problems.

Another object of the present invention is to provide an apparatus and method for efficiently transmitting and receiving control channel data of a reverse traffic channel transmitted by a terminal in a reverse direction in a mobile communication system.

The present invention to achieve these objects

In a mobile communication system comprising a terminal and a base station, the method for transmitting the control channel data of the reverse traffic channel data transmitted by the terminal to the base station in at least one of a series of time intervals,

Determining a time interval to transmit traffic channel data among the series of time intervals, and transmitting control channel data of traffic channel data to be transmitted in the determined time interval in a time interval before the determined time interval. do.

The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that those skilled in the art may better understand the detailed description of the invention that follows.

Additional features and advantages of the invention will be described hereinafter which form the subject of the claims of the invention. Those skilled in the art should recognize that the disclosed concepts and specific embodiments of the invention may be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present invention. Those skilled in the art should also recognize that structures equivalent to the invention do not depart from the spirit and scope of the broadest form of the invention.

1 is a view showing a method of transmitting traffic channel data and control information according to the prior art;

FIG. 2 is a diagram illustrating a problem of power control that may occur when traffic channel data and corresponding control information are transmitted in the same time interval as in 1xEVDO; FIG.

3 is a diagram illustrating a traffic channel and a control channel transmitted by a mobile terminal over a time interval according to a preferred embodiment of the present invention;

4 is a diagram illustrating a mobile station transmitting apparatus for transmitting control channel data of traffic channel data to be transmitted by a mobile station according to an embodiment of the present invention;

5 is a diagram illustrating a control channel according to a time interval in a section in which traffic channel data transmitted by a mobile station is not transmitted according to an embodiment of the present invention;

6 is a flowchart illustrating a method for determining whether to transmit control channel data according to whether a mobile station transmits reverse traffic channel data.

7 is a flowchart illustrating a method for a base station to receive control channel data of a reverse traffic channel according to a first embodiment of the present invention;

8 is a diagram illustrating a base station receiver for receiving control channel data of reverse traffic channel data transmitted by a mobile station according to an embodiment of the present invention;

9 is a flowchart illustrating a method for a base station to receive control channel data of a reverse traffic channel according to a second embodiment of the present invention.

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be noted that reference numerals and like elements among the drawings are denoted by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The present invention relates to a method and apparatus for transmitting and receiving control channel data of traffic channel data transmitted by the terminal to the base station in at least one of a series of time intervals in a mobile communication system including a terminal and a base station.

3 is a diagram illustrating a traffic channel and a control channel transmitted by a mobile station over time according to a preferred embodiment of the present invention.

Referring to FIG. 3, the mobile station transmits control channel data for the i-th frame to the base station in the i-1 th frame. In addition, a time interval of 2.5 ms is set as a time required for the base station to receive the control channel data transmitted from the terminal. The base station receives the control channel data of the traffic channel data carried on the control channel for a 2.5 ms time period, and then allocates the base station receiver resources accordingly. The target power control value target pilot Ep / Nt may be adjusted such that a pilot signal suitable for correcting the traffic channel data transmitted in the i-th frame is received. That is, a time interval of 2.5 ms from the end of the control channel for the i-th frame's traffic channel to the start of the i-th frame's traffic channel is decoded in the information contained in the control channel data and the result is used. This is to perform functions such as base station receiver resource allocation such as memory and power control target pilot Ep / Nt control. The pilot Ep / Nt means a ratio of pilot received energy to noise of the reverse signal received by the base station.

In FIG. 3, the transmission interval for each frame of the control channel is set to 10 ms, which is shorter than 20 ms. The terminal receives control information sent by the base station and transmits control channel data including traffic transmission rate information of the next frame. The closer the transmission time of is to the transmission time of the next frame, the closer the channel state at the time when the control information sent from the base station is determined to the channel state of the time interval in which the corresponding reverse traffic is actually transmitted. This is to reduce the time delay between the mobile station determining the data transmission rate of the traffic channel data to be transmitted by the mobile terminal and actually transmitting the traffic using the corresponding data transmission rate. If the mobile station determines the data transmission rate of the traffic channel data, and then the time delay from transmitting the traffic using the data transmission rate increases, the reverse channel state is changed to support the data transmission rate or the buffer of the terminal ( The buffer state may change and may need to support higher data rates. It is therefore advantageous to minimize the above-described time delays to the extent possible. In a preferred embodiment of the present invention, the base station decodes the information carried on the control channel, secures a minimum time (2.5 ms) necessary for base station receiver resource allocation and power control target pilot Ep / Nt adjustment, and the time interval during which the control channel is transmitted. Minimize. The control information sent by the base station is a signal transmitted by the base station to control the maximum data transmission rate of the mobile station, and is transmitted every 20 ms. Meanwhile, it is obvious that 2.5 ms and 10 ms presented in the present invention can use different values according to various factors such as the state of the mobile terminal and the channel state.

4 is a diagram illustrating a mobile station transmitting apparatus for transmitting control channel data of traffic channel data to be transmitted by a mobile station according to an exemplary embodiment of the present invention.

The information transmitted from the control channel transmitter may consist of 4 bits of channel indicator information, 1 bit of ReTx Indicator, and 1 bit of Increase Available Bit (IAB). The channel indicator information is information indicating a data transmission rate of the traffic channel data transmitted by the terminal, the retransmission indicator information is information indicating whether or not retransmission, the increase information indicating information is the mobile terminal data transmission of the traffic channel data Information used when requesting the base station to increase or decrease the speed. The retransmission indicator information serves to confirm whether the mobile station has properly received an ACK / NACK signal transmitted by the base station for initial transmission by transmitting the mobile station to the base station. The base station knows whether the ACK / NACK sent by the mobile station is properly transmitted by checking the retransmission indicator information transmitted by the mobile station, and therefore, whether or not to combine the retransmission traffic transmitted by the mobile station and the error initial transmission traffic. Can be determined. For example, when the base station transmits a NACK to the initial transmission data transmitted by the mobile station, the base station combines the initial transmission and the retransmission only when the base station indicates that the retransmission indicator information of the control channel data associated with the retransmission is retransmission. If the retransmission indicator information of the control channel data for the time interval in which the retransmission is received even though the NACK is sent is indicated as the initial transmission, the base station determines that the mobile station has incorrectly received the NACK transmitted by the mobile station as the ACK. Received is recognized as a new initial transmission independent of the previous initial transmission.

Referring to FIG. 4, the 6-bit control channel data includes a 10-bit cyclic redundancy code (CRC) added by the error detection bit adder 401 and a convolutional code by the tail bit adder 402. An 8-bit encoder tail is attached. After the 8-bit encoder tail is added, the information is transmitted to the base station through the convolutional encoder 403, the binary phase shift keying (BPSK) 404, and the spreader 405. The addition of the CRC to the 6-bit control channel data is to give the base station receiver a function that can determine whether there is an error in the control channel data transmitted by the mobile terminal. When the error determination function for the control channel data is present in the base station receiver, the mobile terminal does not need to transmit the control channel data in a section in which the traffic channel data is not transmitted. The need for transmitting the control channel data in the period in which the traffic channel data is not transmitted as described above is a reception operation for the traffic channel data only when the CRC receiver outputs a signal that there is no error in the control channel data. This is because If the mobile station does not transmit the control channel data or there is an error in the control channel data, the CRC receiver will output a signal indicating an error (CRC fail) and the base station does not perform the receiving operation on the relevant traffic channel data. Do not. The CRC receiver of the base station receiver generally operates as shown in Table 2.

Mobile terminal control channel data transmission Error CRC Receiver Results send No errors CRC Pass send Error CRC Fail Do not send - CRC Fail

In contrast, since there is no CRC in the R-RICH in the 1xEVDO, the base station receiver cannot determine whether there is an error in the information carried in the R-RICH. Therefore, the mobile station should transmit the R-RICH regardless of whether the traffic channel data is transmitted in all time intervals. In the 1xEVDO, when the traffic channel data is not transmitted, as shown in Table 1, the R-RICH is loaded with control channel data indicating that the data transmission rate of the traffic channel data is 0 kbps.

As shown in FIG. 4, by adding a 10-bit CRC to the control channel data, the mobile station can not transmit the control channel data even in a period where the traffic channel data is not transmitted. This control channel data transmission method has an advantage of reducing the amount of interference caused by the control channel in the reverse direction compared to the case of 1xEVDO.

Therefore, in the embodiment of the present invention, the control channel data may or may not be transmitted through the control channel, and the control channel controller 406 is provided as shown in FIG.

5 is a diagram illustrating a control channel according to a time interval in a section in which traffic channel data transmitted by a mobile station is not transmitted according to an exemplary embodiment of the present invention.

Referring to FIG. 5, when the CRC is added to the control channel data and transmitted as shown in FIG. 4, it can be seen that the control channel data is also stopped during the period in which the traffic channel data is not transmitted. In FIG. 5, the mobile station does not transmit traffic channel data for a total of n frames from the i + 1 th frame to the i + n-1 th frame. In this case, the control channel transmits control channel data through the control channel that traffic channel data will not be transmitted from the i-th frame to the i + 1th frame. The traffic channel data and the control channel data are not transmitted until the i + n-2th frame, but the control channel data that the traffic channel data of the i + nth frame is transmitted in the i + n-1th frame. The traffic channel data is then transmitted in the i + nth frame. As such, transmitting control channel data that the traffic channel data is not transmitted in the i + 1th frame in the i-th frame serves to inform the base station that the traffic channel data transmission stop time interval starts. When the base station knows that the traffic channel data transmission stop time interval starts, the base station can minimize the allocation of the base station receiver resources in the time period when the traffic channel data transmission stop. Also, in FIG. 5, the control channel data is transmitted in the i + n-1th frame. The control channel data of the traffic channel data transmitted in the i + nth frame (information that the traffic channel data starts in the i + nth frame). To transmit.

6 is a flowchart illustrating a method for determining whether to transmit control channel data according to whether a mobile station transmits reverse traffic channel data.

Referring to FIG. 6, in step 601, the mobile station receives information related to the maximum data rate of the traffic channel data to be transmitted from the base station. In step 602, the mobile terminal uses the information related to the received maximum data rate, the maximum data rate supported by the power amplifier of its own, its buffer state, and the like. The transmission rate is used to determine whether to transmit traffic channel data. Thereafter, in step 603, the mobile station determines whether transmission of traffic channel data is stopped in the i-th frame. The determination that the transmission is stopped corresponds to a case where the data transmission rate determined in step 602 is 0 kbps. As a result of the determination, if transmission is not interrupted, in step 604, control channel data carrying information including information indicating that the traffic channel data of the i-th frame to the i-th frame will be transmitted is transmitted. If it is determined in step 603 that the traffic channel data is not transmitted in the i-th frame, the mobile station determines whether the traffic channel data is stopped in the i-1th frame in step 605. If it is determined in step 605 that the traffic channel data is stopped in the i-1th frame, the mobile station does not transmit the control channel data carrying the information of the traffic channel data in the i-1th frame as in step 607. On the other hand, if it is determined in step 605 that the traffic channel data is transmitted in the i-1th frame, the mobile station provides information indicating that traffic channel data is not transmitted from the i th frame in the i-1 th frame as in step 606. In fact, control channel data is transmitted.

The function of determining whether to transmit control channel data of FIG. 6 is performed by the control channel controller 406 of FIG.

7 is a flowchart illustrating a method for a base station to receive control channel data of reverse traffic channel data. Here, the base station activates the receiver for the control channel every 20 ms. The base station activates the receiver on the control channel in every frame regardless of whether the mobile station actually transmits control channel data in the frame.

Referring to FIG. 7, in step 701, the base station receives control channel data every frame and decodes it. In step 702, an CRC check is performed on the decoded signal. In operation 703, it is determined whether the result of the error detection is an error free (CRC pass). If the determination result is no error, the control channel data is used to perform receiver resource allocation, power control target pilot Ep / Nt control, etc. of the base station in order to efficiently receive the traffic channel data to be received in the next frame in step 704. do. As a result of the determination in step 703, if the error detection result is CRC fail, the base station determines whether the traffic is in the transmission stop state in step 705. The state in which the traffic channel data is stopped means that no CRC pass is output in the CRC check for the control channel data after the control channel data that the traffic channel data is stopped is received. In this case, in step 707, the base station determines that the traffic channel data is suspended in the next frame. On the other hand, if it is determined in step 705 that the traffic channel data is not in the transmission stop state, the base station determines that an error occurs in the control channel in step 706.

8 is a diagram illustrating a base station receiver for receiving control channel data of reverse traffic channel data transmitted by a mobile station according to an embodiment of the present invention.

Referring to FIG. 8, the base station despreads the control channel data received every frame through the despreader 801 and demodulates the BPSK through the demodulator 802. The demodulated signal is decoded in a Viterbi decoder (803). The control channel data decoded by the Viterbi decoder 803 is subjected to CRCCheck in the error detector 804 and then input to the control channel data controller 805. As shown in FIG. 7, the control channel data controller 805 determines whether the mobile station transmits the traffic channel data in the next frame in consideration of whether or not the transmission channel of the traffic channel data is stopped as a result of the CRC check. do. If it is determined that the traffic channel data is to be received in the next frame, the control channel data controller 805 allocates the base station receiver resources and power control target pilot Ep / Nt as shown in step 704 of FIG. Perform the adjustments, etc.

5, 6, and 7 are diagrams illustrating a case in which control channel data is also stopped as traffic channel data is stopped. That is, the CRC is added to the control channel data to allow the control channel data to stop transmission. Adding the CRC to the control channel data may be utilized for other purposes besides the purpose of enabling transmission stop of the control channel data.

Another advantage obtained by adding CRC to the control channel data is that it can be used to obtain a constant reception performance by adjusting the power control target pilot Ep / Nt. In general, in a conventional CDMA2000 mobile communication system, a mobile station transmits a basic channel (FCH), which is another low-speed traffic channel, in addition to the above-described traffic channel. The role of the FCH is used to control the outer loop power control that keeps the reverse reception performance of the base station constant by always transmitting during a call regardless of whether the traffic channel data is transmitted or not. . The external loop power control plays a role of appropriately adjusting the power control targetpilot Ep / Nt using the reception error of the FCH.

Properly adjusting the external loop power control target pilot Ep / Nt means that the receiver determines whether there is an error in the received signal and adjusts the target pilot Ep / Nt or a similar value in power control based on this. it means. For example, if the receiver targets the target receive error rate ('T_FER'), if the received signal has an error, increase the target pilot Ep / Nt x dB; if there is no error, decrease x ÷ (1 ÷ T_FER -1) dB. You can. As such, when the target pilot Ep / Nt is adjusted and power control is performed so that the received signal Ep / Nt is as close as possible to this value, the performance of the received signal is very close to T_FER. As described above, in order to adjust the power control target pilot Ep / Nt, the CRC is transmitted at all times during a call call so that the receiver can determine whether there is an error in the received signal. For this reason, in the conventional CDMA2000 mobile communication system, the FCH is always transmitted during a call.

When the CRC is added to the control channel data as described above, a control channel other than the FCH can be used to adjust the power control target pilot Ep / Nt of the external loop power control and transmit the traffic channel data in the conventional CDMA2000 mobile communication system. Regardless of whether or not the FCH was always sent during a call call, there is no need. That is, by adding the CRC to the control channel data, the power control target pilot Ep / Nt control function and the control channel data transfer are performed. When the control channel is utilized for this purpose, the mobile terminal must transmit control channel data even when the traffic channel data is interrupted, unlike in the case of FIGS. 5, 6, and 7, and the FCH transmission is performed for data and voice. It is not necessary except when the voice is simultaneously serviced.

As described above, FIG. 9 is an embodiment of a method of receiving a base station when the mobile station transmits control channel data even when the mobile station stops transmitting the traffic channel data. This flowchart shows how to control the loop power control target pilot Ep / Nt. Here, the mobile station transmits control channel data every 20ms and the base station activates the receiver for the control channel data every 20ms.

Referring to FIG. 9, in step 901, the base station receives control channel data every frame and decodes it. In step 902, a CRC check is performed on the decoded signal. Thereafter, in step 903, it is determined whether the result of the error detection is no error (CRC pass). If there is no error, the control channel data is used to perform receiver resource allocation, power control target pilot Ep / Nt control, etc. of the base station in order to efficiently receive the traffic channel data to be received in the next frame in step 904. do.

The power control target pilot Ep / Nt adjustment made in step 904 is different from the power control target pilot Ep / Nt adjustment made in step 704. The power control target pilot Ep / Nt control in step 704 is performed by considering only the data transmission rate information of the mobile station in the control channel, whereas the power control target pilot Ep / Nt control in step 904 is a mobile station in the control channel. Based on the data transmission rate information of the control and the error of the control channel data.

If it is determined that there is an error in step 903, only the power control target pilot Ep / Nt adjustment is performed as in step 905. The control of the power control target pilot Ep / Nt performed in step 905 is based only on the error of the control channel data.

In steps 904 and 905, the control of the power control target pilot Ep / Nt based on the error of the control channel data is performed according to the T_FER of the control channel. For example, if an error occurs, the power control target pilot Ep / Nt is increased by x dB, and if there is no error, x ÷ (1 ÷ T_FER -1) dB may be decreased.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention has an advantage of increasing efficiency of base station resource allocation and enabling efficient power control.

Claims (18)

In a mobile communication system comprising a terminal and a base station, the method for transmitting the control channel data of the traffic channel data transmitted to the base station by the terminal in at least one of a series of time intervals, Determining a time interval for transmitting the traffic channel data among the series of time intervals; And transmitting the control channel data of the traffic channel data to be transmitted in the determined time interval in the previous time interval of the determined time interval. The method of claim 1, The time interval for transmitting the control channel data is characterized in that the first threshold time is earlier than the transmission start time of the traffic channel data to be transmitted. The method of claim 2, The first threshold time interval is a time interval for decoding the control channel data, the base station to allocate a receiver resource and perform a function of power control value adjustment. The method of claim 1, The time interval for transmitting the control channel data has a size of a second critical time interval. The method of claim 4, wherein And wherein the second threshold time interval is a section for minimizing a difference between a start time point of transmitting the control channel data and a start time point of transmitting the traffic channel data. The method of claim 1, The control channel data includes channel indicator information and retransmission indicator information of the traffic channel data, and information indicating the increase and decrease of the transmission rate of the traffic channel data. The method of claim 1, The control channel data includes the presence or absence of transmission information of the traffic channel data to be transmitted in the determined time interval. In a mobile communication system comprising a terminal and a base station, the base station receives the control channel data of the traffic channel data transmitted from the terminal in at least one of a series of time intervals, Receiving and decoding information including error detection information; Performing error detection of the decoded information; And if there is no error in the error detected control channel data, allocating a base station receiver resource according to the control channel data and adjusting a power control value. The method of claim 8, If there is an error in the error-detected control channel data, determining whether control channel data indicating that the traffic channel data is stopped is transmitted in a previous time interval; And determining that the traffic channel data is in the transmission stop state even in the next time interval, if the traffic channel data is in the transmission stop state even in the previous time period. The method of claim 9, And if the transmission of the traffic channel data is not stopped, determining that there is an error in the section for receiving the control channel data. In a mobile communication system comprising a terminal and a base station, the apparatus for transmitting the control channel data of the traffic channel data transmitted by the terminal to the base station in at least one of a series of time intervals, A controller for determining a time interval for transmitting the traffic channel data among the series of time intervals and for determining control channel data of the traffic channel data to be transmitted in the determined time interval in a time interval before the determined time interval; And a transmitter for transmitting the determined control channel data. The method of claim 11, The transmitter for transmitting the determined control channel data, An error detection bit adding unit for adding an error detection bit to be used at a receiving end to the control channel data; A tail bit adder for adding an encoded tail bit to the control channel data to which the error detection bit is added; An encoder for encoding the signal to which the tail bits are added; A modulator for modulating the encoded signal; And a spreader for spreading the modulated signal. The method of claim 11, The control channel data includes channel indicator information and retransmission indicator information of the traffic channel data, and information indicating an increase and a decrease in the transmission rate of the traffic channel data. In a mobile communication system comprising a terminal and a base station, the base station receives the control channel data of the traffic channel data transmitted from the terminal in at least one of a series of time intervals, A receiver for determining a time interval for receiving the traffic channel data among the series of time intervals and decoding the received information; An error detector for error detecting the decoded information; And a control channel data controller for allocating a base station receiver resource and adjusting a power control value according to the error detected control channel data. The method of claim 14, The decoding receiver, A despreader for despreading the received information; A demodulator for demodulating the despread signal; And a decoder for viterbi decoding the demodulated signal. The method of claim 14, And the control channel data controller determines whether the base station transmits the traffic channel data of a next frame of the terminal according to whether the control channel data has an error detection in a current time interval. In a mobile communication system comprising a terminal and a base station, the base station receives the control channel data of the traffic channel data transmitted from the terminal in a series of time intervals, Receiving and decoding information including error detection information; Performing error detection of the decoded information; And adjusting the power control value according to the error detection information if there is an error in the error detection control channel data. The method of claim 17, And adjusting the power control value according to the control channel data and the error detection information if there is no error in the error detected control channel data.