KR20000056803A - Method for assigning and compensating relative gain between wireless channels - Google Patents

Abstract

PURPOSE: A wireless mobile multimedia system like CDMA 2000 supports applications having various service qualities, and guarantees services such as transmission rate, bit error rate, time latency. When new service qualities are requested in the CDMA 2000 system according to the service types, it needs to provide a method to allocate and compensate the profits among the wireless channels. CONSTITUTION: When a new application or a logical connection is generated, it is judged whether the new application uses a circuit or a non-circuit. According to the judgement a representative bit error rate of a physical channel of the corresponding way is detected, and on the basis of the representative bit error rate the profit value for the physical channel is calculated. By controlling the physical channel of a wireless sector, the service quality of the sector is guaranteed efficiently.

Description

Relative gain allocation and compensation between wireless channels {METHOD FOR ASSIGNING AND COMPENSATING RELATIVE GAIN BETWEEN WIRELESS CHANNELS}

The present invention relates to a wideband code division multiple access (CDMA 2000) system, and more particularly, to a method for allocating and compensating for relative gain between radio channels in a CDMA 2000 system.

Wireless mobile multimedia systems, such as CDMA 2000 systems, must support applications with various types of service characteristics and qualities, and need to ensure quality of service such as transmission rate, bit error rate (BER), and time delay. There is. In the case of a wired system, since the reliability and predictability of the performance or quality of the entire system is high and predictable, guarantee of quality of service is easier than that of a wireless mobile multimedia system. However, in the case of a wireless system, it is generally recognized that it is difficult to guarantee the quality of service in the wireless section due to the low reliability in the wireless section and the mobility of the mobile station. For this reason, methods for supporting the service quality required by the application in the optimal form in the wireless section are proposed.

Accordingly, the present invention is to solve such a conventional problem, the gain allocation and compensation method between the wireless channels that need to be applied in the CDMA 2000 system to support this in the wireless section when different quality of service is required according to the service type The purpose is to provide.

In order to achieve the above object, the present invention

(a) when a new application or a logical connection occurs, determining whether the new application is a circuit type or a non-line type;

(b) detecting a representative bit error rate of the physical channel of the corresponding scheme according to the determination of step (a); And

and (c) calculating relative gain values for the corresponding physical channel based on the representative bit error rate detected in step (b).

If the new application is a circuit method, the representative bit error rate of the physical channel of the circuit method is determined as the bit error rate of the application requiring the minimum bit error rate, and when the new application is a non-line method, The representative bit error rate is preferably determined by averaging the bit error rate of all applications.

The present invention also includes the steps of (i) determining whether an error has occurred in a frame received on a logical connection of a circuit-based physical channel;

(ii) calculating a frame error rate of an expected value when the frame error occurs in step (i);

(iii) comparing the current frame error rate with the expected frame error rate;

(iv) calculating the power gain step dimensions according to the comparison result of step (iii);

(v) comparing the sum of the power gain step dimensions and the mobile station power strength with the maximum power strength that the mobile station can output; And

(vi) providing a relative gain compensation method comprising controlling the increase or decrease of the power gain according to the comparison result of step (v).

The frame error rate of the estimate is obtained by the equation F _estimate = (Φ × L) / (T _NAKn −T _NAKn-L ), where L is a fixed number of frame errors fixed by the system, and T _NAKn is is the time when the nth NAK frame is received, and Φ is the coefficient applied to compensate for the L / (T _NAKn -T _NAKn-L ) value expressed as the time period at which a certain size frame error occurs with the actual FER value. It is preferable. The power gain step dimension is obtained by the equation PGSS = a (1 + β) G _step , the PGSS is the power gain step dimension, and a is the network quality support requirement for each application. It is more preferable that β is a variable indicating the degree, β is the difference between the expected frame error rate and the initial frame error rate, and G _step is a fixed power gain step dimension determined by the system.

1 is a block diagram illustrating a reverse channel structure included in a wideband code division multiple access (CDMA 2000) system that can be applied to the present invention.

2 is a block diagram showing a forward channel structure included in a CDMA 2000 system that can be applied to the present invention.

3 is a flowchart illustrating a relative gain allocation method between radio channels in a CDMA 2000 system according to an exemplary embodiment of the present invention.

4 is a flowchart illustrating a relative gain value compensation method for a circuit-type physical channel in a CDMA 2000 system according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a reverse channel structure included in a wideband code division multiple access (CDMA 2000) system that can be applied to the present invention.

One mobile station may use a reverse pilot channel (PCH), a dedicated control channel (DCCH), a fundamental channel (FCH), and a supplemental channel (SCH), and allocate a relative gain to each of them as shown in FIG. 1. I can do it. A long code mask is used for identification of each mobile station, and different Walsh codes having orthogonal characteristics are assigned to distinguish between channels in the mobile station.

In the basic reverse channel gain control operation, the required signal-to-noise ratio Eb / No is determined according to the bit error rate (BER) required by each physical channel, and the gain of the pilot channel is determined based on the required Eb / No. The relative gain of FIG. 1 is adjusted to a relative gain value. As the call is in progress and after adjustments to the G _P by the closed-loop power control, the channels of all mobile stations by G _P, that is, the power intensity of the PCH, DCCH, FCH, SCH is adjusted in the same proportion.

2 illustrates a forward channel structure included in a wideband code division multiple access (CDMA 2000) system that can be applied to the present invention.

As shown in FIG. 2, each channel is distinguished by assigning different Walsh codes having orthogonal characteristics. In the forward direction, two or more traffic channels (FCH or SCH) can be assigned to one mobile station. Each traffic channel can be assigned different data channel gains according to the required BER.

In the basic forward channel gain control operation, the required signal-to-noise ratio Eb / No is determined according to the BER required for each physical channel, and the data channel gain of FIG. 2 is adjusted based on the required Eb / No.

Types of service include signaling, voice, circuit, and non-line data, and the line-type and non-line-type services required for dual data transmission include different quality of service (Quality of Service); QoS) requirements. Attributes of QoS requirements specify things such as transmission rate, time delay, BER, time delay deviation for connection or line between end terminals.

The logical connections specified in protocol layer 2 are divided according to circuit and non-line schemes, and these logical links are mapped to different traffic channels and assigned to each physical channel.

As shown in FIG. 1, G _S1 and G _S2 , which are relative gain values for SCH1 and SCH2, which are physical channels of the non-line and circuit types, are efficiently allocated whenever a new application is added.

In the reverse direction, a unique long code mask is masked for each mobile station on channels transmitted from each mobile station so that each mobile station can be distinguished. In order to distinguish two or more signal and traffic channels allocated to one mobile station, different Walsh codes having orthogonal characteristics are assigned and distinguished. Therefore, in the reverse direction, even though the same Walsh code is used by different mobile stations, the Walsh code can be reused because the long code mask can be used to distinguish the same Walsh code. In conclusion, even if two separate Walsh codes are allocated for the non-line and line methods, the system performance is not reduced due to the limitation of the number of Walsh codes.

Hereinafter, a method of allocating an initial relative gain value between radio channels in consideration of characteristics of an application and operation of a link layer in a wideband code division multiple access system according to an exemplary embodiment of the present invention will be described with reference to FIG. 3. 3 illustrates a method for allocating an initial relative gain value between radio channels in consideration of characteristics of an application and operation of a link layer in a wideband code division multiple access system according to a preferred embodiment of the present invention.

The mobile station is in the idle state (step S301). It is determined whether a new application or logical connection occurs in the mobile station idle state (step S302). As a result of the determination in step S302, if the new application or logical connection does not occur, the processing routine returns to step S301. On the contrary, when a new application or logical connection occurs (step S303). In step S304, the initial BER (BER _initial ) for the application is set to a maximum value of 100%.

In step S305, it is determined whether the new application or the application corresponding to the new logical connection is a circuit scheme. As a result of the determination in step S305, if the new application or the application corresponding to the new logical connection is a circuit type, whether the bit error rate BER _{request required} for the corresponding application is smaller than the BER of the physical channel to which the corresponding application / logical connection is allocated. (Step S306). As a result of the determination in step S306, the processing routine returns to step S302 when the bit error rate BER _{request requested} for the corresponding application is equal to or greater than the BER of the physical channel to which the corresponding application / logical connection is allocated. On the contrary, if it is determined that the bit error rate BER _{request required} for the corresponding application is smaller than the BER of the physical channel to which the corresponding application / logical connection is assigned, the BER of the application requesting the smallest BER is selected (step). S307). That is, the BER _line is calculated by the following formulas (1) to (4).

The maximum power strength P _t ^R that one mobile station can output in the reverse direction is expressed by Equation 1 based on a gain value G, a required transmission rate, and a G ^R _pilot of each channel.

(Equation 1)

P _t ^R = G _P ^R × (α ^R × G ^R _pilot ) Here, G _P ^R is a gain value determined through a power control algorithm at the base station to control the power strength of one mobile station. When the Eo / Nb of the mobile station radio wave received at the base station is small or the frame error rate (FER) is large, the G _P ^R gradually increases and vice versa. α ^R is a coefficient calculated when P _t ^R is substituted based on the G ^R _pilot .

When G ^R _V , G ^R _C , and G ^R _Dc are each substituted in the form of a G ^R _pilot , they are as shown in the following Formula 2.

(Equation 2)

G ^R _V = ρ × G ^R _pilot , G ^R _C = δ × G ^R _pilot , G ^R _Dc = (Eb / No) _C = Φ _C × G ^R _pilot

A relative gain values are assigned respectively to the FCH or DCCH G _C ^R for the DCCH which generally require a high reliability is secured by the system to a specific value, G ^R _V is negative

G _V ^R is also assumed to be fixed by the system to a specific value because it is limited to a transmission rate of up to 14400 bps for services. As a relative gain allocated to the traffic channel, it is assumed that G ^R _Dc is used as a physical channel of a circuit type.

It is assumed that the circuit-type physical channel includes L logical connections and the i-th logical connection includes N _i applications. This can be expressed as Equation 3 below.

(Equation 3)

Here, S ^C is a set of all applications allocated to the circuit-type physical channel, and A ^C _ij is the j-th application included in the logical connection of the i-th circuit method.

Among these applications, to select a BER that can represent the corresponding physical channel, the circuit method is selected as the BER of an application requiring the smallest BER in all applications as shown in Equation 4.

(Equation 4)

BER _line = _i , _The minimum BER (A ^C _ij ) for _j , where BER (A ^C _ij ) is a function representing the BER value required by the application A ^C _ij .

Using the calculated BER _line , the required Eb / No value can be obtained by a table lookup method between BER and Eb / No. The Eb / No obtained by the table lookup method is named (Eb / No) _C for each line. The relative gain Φ _C can be directly obtained by this (Eb / No) _C value. Φ _C = (Eb / No) _C / G ^R _pilot (step S308).

On the other hand, as a result of the determination in step S305, when the new application or the application corresponding to the new logical connection is not a circuit method, it is determined that the new application or the application corresponding to the new logical connection is a non-line method (step S309). ).

In step S310, it is determined whether the bit error rate BER _{request requested} for the corresponding application is equal to the BER of the physical channel to which the corresponding application / logical connection is allocated. As a result of the determination of step S310, if the bit error rate BER _{request requested} for the corresponding application is different from the BER of the physical channel to which the corresponding application / logical connection is allocated, the processing routine returns to step S302. On the contrary, when the bit error rate BER _{request required} for the corresponding application is the same as the BER of the physical channel to which the corresponding application / logical connection is allocated, the BER of the application requesting the average value of the BER required by all applications is selected. That is, the BER _non-line is calculated by the above equations 5 to 7 (step S311).

Substituting G ^R _V , G ^R _C , and G ^R _Dp in the form of a G ^R _pilot is as shown in Equation 5 below.

(Eq. 5)

G ^R _V = ρ × G ^R _pilot , G ^R _C = δ × G ^R _pilot , G ^R _Dp = Φ _P × G ^R _pilot

As described above, as relative gain values allocated to FCH or DCCH, respectively,

In general, G _C ^R for DCCH requiring high reliability is fixed by the system to a specific value, and G _V ^R is also limited to a specific value because G _V ^R is limited to a transmission rate of up to 14400 bps for voice services. Assume that it is fixed by the system. Also, as a relative gain allocated to the traffic channel, it is assumed that G ^R _Dp is used as a non-line physical channel.

It is assumed that the non-lined physical channel includes K logical connections and the i-th logical connection includes N _i applications. This can be expressed by the following formula (6).

(Equation 6)

Here, S ^P is a set of all applications allocated to the non-line physical channel.

In order to select a BER that can represent a corresponding physical channel among these applications, the non-line method is selected as the BER of an application that requires an average value of BER required by all applications, as shown in Equation 7 below.

(Eq. 7)

Using the BER _non-line calculated in this way, the corresponding required Eb / No value can be obtained by a table lookup method between BER-Eb / No. The Eb / No obtained by the table lookup method is called (Eb / No) _P for the non-line. That is, Φ _{P, which} is a relative gain value of the non-linear method, can be directly obtained by using this (Eb / No) _P value. That is, Φ _P = (Eb / No) _P / G ^R _pilot (step S312).

In step S313, when the calculated Eb / No for each physical channel is replaced by a relative gain value, the total power intensity emitted by the mobile station at that time is greater than or equal to the maximum power intensity P _t ^R that the mobile station can output. Determine whether or not. It is determined in step S313, if the total power strength of the mobile station is emitted when the maximum power intensity in the mobile station can output is less than P _t ^R, that is, α ^R of _{≥ρ + δ + Φ C + Φ} P +1 Relative gain values for the circuit and non-line physical channels are assigned values of Φ _C and Φ _P , respectively. In contrast, Φ _C and Calculated for α ^R <ρ + δ + Φ _C + Φ _P +1 When Φ _P is applied, when the total power intensity emitted by the mobile station exceeds the maximum power intensity G _P ^R that the mobile station can output, the total amount of power that can be allocated to the call channel for data service is calculated as shown in Equation 8 below. Can be.

(Eq. 8)

σ × G ^R _pilot = {α− (ρ + δ + 1)} × G _pilot where σ is the magnitude of the relative gain that can be allocated to the call channel for data service.

Based on the ratio between Φ _C and Φ _P and σ, as shown in Equation 8 below, the proportional values satisfying both conditions, σ _C and σ _P, are calculated using Equation 9 below to calculate the line and ratio, respectively. It is applied as a gain value relative to a circuit-type physical channel.

(Eq. 9)

σ _C + σ _P = σ, σ _C : σ _P = Φ _C : Φ _P, where σ _C and σ _P are the relative gain values for the circuit and non-line physical channels, respectively, and σ is the amount of power remaining.

In the forward direction, since each physical channel is distinguished using a Walsh code having an orthogonal characteristic, there may be two or more SCHs allocated to one mobile station. However, in CDMA 2000, in order to maintain the same shape as the channel structure in the reverse direction, one non-line and circuit physical channel is used in the forward direction. As shown in FIG. 2, the data channel gains can be allocated differently to each physical channel in the forward direction, and thus the data channel gain value can be adjusted according to the BER representing each physical channel. The interchannel data channel gain algorithm in the forward direction changes only the following: Otherwise, it is the same as the reverse algorithm.

In the CDMA 2000 system, power control is possible for the forward channel, and the maximum amount of power that can be allocated to one mobile station in the forward direction is limited because the amount of interference to other users and cells can be increased when supporting a transmission rate of up to 2 Mbps. This maximum power strength is assumed to be P ^F t. Based on G ^F _V , P ^F t may be expressed as in Equation 10 below.

(Eq. 10)

P ^F t = G ^F _P × (α ^F × G ^F _V )

For the reverse relative gain of each channel it is expressed as Equation 11, based on the G ^F _V data channel gain value assigned to the physical channel for the voice service, but calculated on the basis of the forward _pilot G ^R.

(Eq. 11)

G ^F _C = δ × G ^F _V , G ^F _Dp = Φ _P × G ^F _V , G ^F _Dc = Φ _C × G ^F _V

In step S316, it is determined whether a new circuit-type logical connection has been established.

As a result of the determination in step S316, if the new circuit-type logical connection is not established, the processing routine returns to step S302. In contrast, when the new circuit-type logical connection is established, the call channel gain compensation algorithm is activated (step S317).

Hereinafter, a method of compensating a relative gain value for a circuit type physical channel in a CDMA 2000 system according to an exemplary embodiment of the present invention will be described with reference to FIG. 4. FIG. 4 illustrates a CDMA 2000 system according to an exemplary embodiment of the present invention. A method of compensating a relative gain value for a convolutional physical channel is described.

In general, applications using the circuit method require a relatively strict level of quality of service compared to that using the non-line method. In other words, the time delay limit required by each circuit type application should be guaranteed as far as possible in the radio section, which is directly related to the frame error rate in the link layer. For this reason, it is necessary to optimize the gain value to compensate for the increase in the frame error rate due to the change of the position of the mobile station during the call progress, with respect to the relative gain value and data channel gain allocated by using BER during initial call setup. As described above, in the link layer protocol for the logical connection of the circuit type, the relative gain (in the reverse direction) or the data channel gain (for the forward direction) for the circuit type physical channel is adjusted according to the frequency of occurrence of the frame error.

In step SS401, each occurrence of a frame error is monitored in the logical connection of the circuit-type physical channel. It is determined whether a frame error has occurred during monitoring of step S401 (step 402). If the frame error has not occurred as a result of the determination in step S402, the processing routine returns to step S401. In contrast, when it is determined that the frame error has occurred, the expected value FER is calculated by the following equation (12) (step S403).

In general, the FER is calculated as a ratio of the total number of frames received by the mobile station or the base station to the number of frames in which an error occurs. This means that the FER is calculated periodically after a certain time has elapsed. In the present invention, since the FER of the corresponding line must be calculated at the time when the frame error actually occurs, it is difficult to apply a method of periodically calculating the FER every predetermined time. Therefore, the estimated value FER is calculated by the following equation 12 to dynamically calculate the FER at the time when the frame occurs.

(Eq. 12)

FER _estimate = (Φ × L) / (T _NAKn -T _NAKn-L ), where L is the number of fixed frame errors fixed by the system, and T _NAKn is the time when the nth NAK frame is received Φ is a coefficient applied to compensate for the L / (T _NAKn -T _NAKn-L ) value expressed as a time period in which a frame error of a certain size occurs with an actual FER value.

The method of calculating the FER _expected value is an L value according to a case of dividing it into three types of application of a circuit method that is actually in service, that is, a constant bit rate (CBR), a real time variable bit rate, and a non-real time variable bit rate. By appropriately reflecting the characteristics of the application can be reflected.

Since CBR-type applications have a constant call distribution, L values are equally applied while the application is in service. Real-time variable bit rate type application has many changes in the distribution of call occurrences and needs to support this change in real time. Therefore, L value is appropriately changed within a specific range according to the change of call occurrence distribution. That is, when burst data is generated, the L value is reduced to support the required BER, and when the call data is less, the L value is increased. The non-real time variable bit rate type application has a change in the distribution of call occurrences, but it is not necessary to support the application in real time, so the L value is converted within a small range during the service of the application.

In step S404, it is determined whether the current FER (FER _current ) is smaller than the calculated approximate FER (FER _{expected value} ) (FER _current <FER _{expected value} ). The determination result of step S404. The FER or more _current is the calculated _estimate FER and the FER _estimate and the calculated initial FER (FER _initial) it determines whether or not the same fingers (step S405). As a result of the determination in step S405, when the initial FER (FER _initial ) and the calculated FER _{expected value} are different, the processing routine returns to step S401. On the contrary, when the initial FER (FER _initial ) and the calculated FER _{estimated value} are determined to be the same (FER _initial = FER _{estimated value} ), the gain value and the FER _current for each physical channel are reduced to the initial value (step S406). ), The processing routine returns to step S401.

On the other hand, when the determination result of step S404 indicates that the FER _current is smaller than the calculated FER _expected value, the power gain step size is calculated by the following equation (13) (step S407).

(Eq. 13)

Power gain step dimension (PGSS) = a (1 + β) G _step , where a is a variable that indicates the extent to which the network must support the QoS requirements required by each application and has a value between 0 and 1. β is the difference between the FER and the FER _{estimate the initial} value, i.e. _expected │FER -FER _initial │. G _step is a fixed power gain step dimension determined by the system. The power gain step dimension is determined in consideration of the characteristics of the application and the wireless network quality at that time.

In step S408, it is determined whether the sum of the mobile station power strength and the power gain stem dimension is equal to or less than the maximum power intensity P _t that the mobile station can output. As a result of the determination in step S408, if the sum of the mobile station power strength and the power gain stem dimension is larger than the maximum power intensity P _t that the mobile station can output, the equation 9 corresponds to the circuit-type physical channel and the non-line physical channel. Adjust the gain value for Alternatively, if it is determined that the sum of the mobile station power strength and the power gain stem dimension is less than or equal to the maximum power intensity P _t that the mobile station can output, the gain is increased by the calculated power gain step dimension and the FER _current is _estimated by the FER _estimate. Replace with.

As described above, according to the present invention, it is assumed that two or more SCH physical channels can be allocated to one mobile station in the CDMA 2000 system forward structure, and in this case, for each circuit and non-line logical connection, respectively. It is assumed that one physical channel can be allocated. By using this method, it is possible to efficiently guarantee the quality of service in the wireless section by controlling the physical channel of the wireless section for the quality of service required by each application. The present invention also allocates a relatively large power gain to a circuit-based application and compensates when the error rate is high for an application using a non-line method and an application using a circuit method to compensate for the quality of service required by the circuit-type application. Can be provided efficiently. Furthermore, in the present invention, when the frame error occurs in the link layer due to the mobility of the mobile station, the relative gain value or the data channel gain is temporarily increased to ensure the quality of service for the circuit-type application. Even if the service quality is guaranteed to the maximum.

Although the present invention has been described in detail only with respect to the embodiments described above, it will be apparent to those skilled in the art that the present invention can be changed or modified within the spirit and scope of the present invention. It should be limited by the claims.

Claims (10)

(a) when a new application or a logical connection occurs, determining whether the new application is a circuit type or a non-line type; (b) detecting a representative bit error rate of the physical channel of the corresponding scheme according to the determination of step (a); And (c) calculating relative gain values for the corresponding physical channel based on the representative bit error rate detected in step (b). The method of claim 1, wherein the representative bit error rate of the physical channel of the circuit type is determined as a bit error rate of an application requiring a minimum bit error rate when the new application is a circuit type. The representative bit error rate of the physical channel of the circuit method is a relative gain allocation method between radio channels, characterized in that the bit error rate of all applications are determined as an average value. 2. The method of claim 1, wherein step (c) further comprises determining whether the total power intensity emitted by the mobile station is greater than or equal to the maximum power intensity that the mobile station can output. 4. The method of claim 3, wherein when the total power intensity emitted by the mobile station is smaller than the maximum power intensity that the mobile station can output, the relative gain value for the corresponding physical channel is Φ = (Eb / No) / G _pilot . And Φ, Eb / No, and G _pilot are the relative gain values, the signal-to-noise ratio, and the strength of the pilot channel signal for the corresponding physical channel, respectively. 4. The method of claim 3, wherein when the total power intensity emitted by the mobile station is greater than or equal to the maximum power intensity that the mobile station can output, the relative gain value for the corresponding physical channel is expressed by the equations σ _C + σ _P = σ and σ _C : σ _P = Φ _C : Φ _P , where σ _C and σ _P are the relative gain values for the circuit and non-line physical channels, respectively, σ is the amount of power remaining, and Φ _C and Φ _P , respectively Relative gain allocation method between wireless channels, characterized in that the initial relative gain values in the circuit and non-line physical channel. (i) determining whether an error has occurred in a frame received in a logical connection of the circuit-type physical channel; (ii) calculating a frame error rate of an expected value when the frame error occurs in step (i); (iii) comparing the current frame error rate with the expected frame error rate; (iv) calculating the power gain step dimensions according to the comparison result of step (iii); (v) comparing the sum of the power gain step dimensions and the mobile station power strength with the maximum power strength that the mobile station can output; And (vi) controlling the increase or decrease of the power gain according to the comparison result of step (v). 7. The method of claim 6, wherein the frame error rate of the estimate is obtained by Equation F _estimate = (Φ × L) / (T _NAKn -T _NAKn-L ), where L is a fixed magnitude frame error fixed by the system. Number, T _NAKn is the time when the nth NAK frame is received, and Φ is the L / (T _NAKn -T _NAKn-L ) value expressed as the time period at which a frame error of a certain magnitude occurs. A relative gain compensation method between the radio channels, characterized in that the coefficient applied to. 7. The method of claim 6, wherein the power gain step dimension is obtained by the equation PGSS = a (1 + β) G _step , wherein the PGSS is the power gain step dimension and a denotes the quality of service requirements required by each application. The variable indicating the degree to be supported in the network, β is a relative gain compensation method between the wireless channels, characterized in that the difference between the expected frame error rate and the initial frame error rate. 7. The method of claim 6, wherein when the sum of the mobile station power strength and the power gain stem dimension is greater than the maximum power strength that the mobile station can output, the gain values for the circuit-type physical channel and the non-line physical channel are adjusted. If the sum of the mobile station power strength and the power gain stem dimension is less than or equal to the maximum power intensity that the mobile station can output, increase the gain by the power gain step dimension and replace the current frame error rate with the expected frame error rate. Relative gain compensation method between radio channels. The method of claim 6, further comprising: determining whether an initial frame error rate and a frame error rate of the expected value are the same when the current frame error rate is equal to or greater than the expected frame error rate; And And reducing the gain value and the current frame error rate for each physical channel to an initial value according to the determination result.