KR20040059372A - A device and a method of outer loop power control for the transport multi block or multi transport channel in 3gpp system - Google Patents

Abstract

PURPOSE: An outer loop power control apparatus of multi-block and multi-channel and its operating method are provided to accomplish targeted communication quality by using bit error check values of each channel and block. CONSTITUTION: A BLER(Block Error Rate) of target quality is set and parameters of a delta-up and a delta-down are set(S10). It is determined whether a transport block is received during a TTI(Transmission Time Interval) and if a transport block is received, a corresponding CRC(Cyclic Redundancy Check) is checked(S20). It is determined whether every CRC of the received transport block is normal(S40). If every CRC is not normal, a target SIR(Signal-to-Interference Ratio) is calculated by delta-up at a ratio that the CRC error has been generated(S50). If every CRC is normal, the target SIR is calculated by delta-down(s60). The calculated new target SIR is set as a target quality(S70).

Description

Multi-block and multi-channel outer loop power control device and its operation method {A DEVICE AND A METHOD OF OUTER LOOP POWER CONTROL FOR THE TRANSPORT MULTI BLOCK OR MULTI TRANSPORT CHANNEL IN 3GPP SYSTEM}

The present invention is an outer loop power control for efficiently controlling the output power of a mobile terminal (UE) in an environment in which multiple transport blocks and multiple transport channels of a 3GPP mobile communication system exist. ).

The mobile communication system is a wireless communication with the other party anytime and anywhere while using a mobile terminal subscribed to, and the radio frequency resources used for the wireless communication is limited, but a plurality of mobile terminals to communicate at the same time Code Division Multiple Access (CDMA) is an extended code division multiple access (WCDMA) system that transmits multimedia information including video information at high speed by using the code division multiple access mobile communication system. 3GPP.

Code Division Multiple Access (CDMA) transmits channels or transport channels for multiple subscribers using the same frequency or physical channel, and thus multiple mobile terminals using the same frequency at the same time. (UE) is a communication method at the same time

In the code division multiple access method as described above, the signal output from each mobile terminal acts or affects the adjacent mobile terminal as interference, and the signal-to-noise ratio (SNR or SIR) is deteriorated by the interference as described above. Each mobile terminal increases the output power in order to competitively improve the signal-to-noise ratio (SIR), thereby reducing the radio channel capacity allocated to the base station (BS).

Accordingly, the RADIO NETWORK CONTROLLER (RNC) constituting the base station system has a minimum output in a state in which the output power of each mobile terminal (UE) can be communicated through the base station (BS or NODEB) while maintaining quality (QUALITY). Power control is performed, and the output power control as described above is achieved by controlling and setting a target signal-to-noise ratio TARGET SIR of each mobile terminal UE.

As described above, the process of controlling the output power of the mobile terminal UE by using the target signal-to-noise ratio TARGET SIR is performed between the base station controller RNC and the base station NODEB. The control of the output power generated between the base station (NODEB) and each mobile terminal (UE) is called an inner loop power control (INNER LOOP POWER CONTROLLER).

The target signal-to-noise ratio TARGET SIR uses the reception state information obtained by processing CRC (CYCLIC REDUNDANCY CHECK) of the signal received by the base station (NODEB), and uses code division multiple access (CDMA). In the method, if one CRC process is performed in units of one coding block frame (FRAME) by one transport channel (TRANSPORT CH) by one unit time (TTI: TRANSMISSION TIME INTERVAL) belonging to a physical channel (PHYSICAL CH) Therefore, it is called FER (FRAME ERROR RATE), and in 3GPP Extended Code Division Multiple Access (WCDMA), BLER (BLOCK ERROR RATE) is processed because multiple CRCs are processed by one block block by TTI. It is called.

Hereinafter, the outer loop power control in the conventional code division multiple access (CDMA) scheme will be described with reference to the accompanying drawings.

Attached to explain the prior art, Figure 1 is a functional block diagram of the outer loop power control device of the mobile communication system according to the prior art.

Referring to FIG. 1, a configuration for controlling power of a portable terminal in a code division multiple access type mobile communication system according to the related art is to monitor and control a plurality of base stations (NODEBs) constituting a base station system. A base station controller 10 for outputting a target signal-to-noise ratio control signal of (UE) 30,

The target signal-to-noise ratio applied from the base station controller 10 is processed accordingly to wirelessly output to the mobile terminal 30 as an output power control (TPC) signal and at the same time wirelessly received from the plurality of mobile terminals 30. A base station 20 which applies CRC check processing to the base station controller 10 as reception state information;

A mobile terminal for adjusting the power output wirelessly by the output power control signal (TPC) applied wirelessly from the base station 20, and wirelessly transmitting the communication signal to the base station 20 by the adjusted output power It consists of (UE) 30.

Hereinafter, the outer loop power control in the code division multiple access method according to the related art having the above configuration will be described in detail with reference to the accompanying drawings.

The mobile communication system wirelessly connects with a plurality of mobile terminals 30 in a service area of the base station 20 to provide a mobile communication service, and the plurality of mobile terminals 30 move in their own directions, respectively. The distance with the straight line 20 is far and near, and fluctuates frequently.

Therefore, when each mobile terminal 30 transmits a wireless signal with the same output power, the base station 20 is a problem that the strength of the power received from each mobile terminal 30 is not constant (NEAR-FAR PROBLEM) In this case, the above problem acts as mutual interference between the mobile terminals 30.

In a code division multiple access (CDMA) mobile communication system, an uplink (UP-LINK) signal transmitted from a plurality of mobile terminals 30 to a base station 20 must be received at the same size or level at the base station 20. The mobile terminal 30 can maintain a constant communication quality.

In the DOWN-LINK transmitted from the base station 20 to the mobile terminal 30, since there is no NEAR-FAR PROBLEM as described above, a weak signal is received by the mobile terminal 30 or fading far away. The control signal TPC is transmitted to the portable terminal 30 to increase the output power.

As described above, the signal-to-noise ratio (SIR) of the mobile terminal 30 is measured in the inner loop power control between the base station 20 and the mobile terminal 30, and the outer loop power control is performed using the measured SIR value SIR _est . Compared to the target signal-to-noise ratio (TARGET SIR) (SIR _target ) applied from the base station controller 10, the signal-to-noise ratio (SIR) received from the mobile terminal 30 is bad when the SIR _est > SIR _target is '0'. Output power control signal (TPC) corresponding to the value of the wireless output from the base station 20 to the mobile terminal 30, the case of SIR _est <SIR _target is the opposite good case, so the output power corresponding to the value of '1' The control signal TPC is wirelessly output to the mobile terminal 30.

As described above, the output power control signal value P (k) transmitted from the base station 20 to the mobile terminal 30 can be expressed as follows.

P (k); Output power control signal of current slot

P (k-1); Output power of previous slot

P _TPC (k); Output power control value of current slot

The P _TPC (k) is determined by the signal-to-noise ratio (SIR) received from the mobile terminal 30 and is expressed as follows.

-Δ _TPC if TPCest (k) = 0

As described above, the output power control signal TPC transmitted from the base station 20 to the mobile terminal 30 is, for example, a portable terminal UE transmitted at 1500 Hz and receiving the output power control signal TPC. 30 adjusts the output power itself according to the output power control signal (TPC) value.

That is, by the outer loop power control of FIG. 1, the base station controller (RNC) 10 maintains a target signal-to-noise ratio TARGET SIR that maintains a constant BLOCK ERROR RATE of the mobile terminal 30. ) Value is transmitted to the base station (NODEB) 20.

As a result of CRC checking the signal received from the mobile terminal 30, the base station controller 10 down-regulates the TARGET SIR value and transmits it to the base station when there is no bit error and transmits the signal to the base station. If there is a bit error in the ERROR, the TARGET SIR value is adjusted upward and transmitted to the base station.

The unit size or the STEP SIZE of the output power control signal adjusted upward and downward as described above is represented by DELTA_UP and DELTA_DOWN, respectively, and the size thereof is set in proportion to the FER (FRAME ERROR RATE), and is expressed as follows.

CRC ERROR; TARGET SIR = TARGET SIR + DELTA_UP

DELTA_UP = K * DELTA_DOWN

In a state where a channel environment used for a code division multiple access (CDMA) method is constant, the following conditions must be satisfied in order to maintain the target signal-to-noise ratio TARGET SIR at a constant value.

In addition, in order to satisfy the above conditions, the factor K must satisfy the following conditions.

K = (1 / FER)-1

In the conventional code division multiple access (CDMA) method or the IS-95 method as described above, coding is performed by one TTI in the external loop power control for output power control of the communication channel or the transport channel in each mobile terminal 30. There is only one CRC in the block.

However, in the extended code division multiple access (WCDMA) scheme, a plurality of CRCs exist in units of one coding block, and a plurality of transport channel signals for the plurality of mobile terminals 30 have the same frequency as the physical channel (PHYSICAL CHANNEL). Is sent through).

Each transport channel has different coding and different quality, but in the prior art, when the QOS (QUALITY OF SERVICE) by each channel satisfies the quality of a specific channel, the other channel is different. The ratio of merging to each other is determined to satisfy.

Therefore, when the CRC of a specific channel among the plurality of transport channels included in one frame unit is ERROR, the related art sets the frame to CRC ERROR and causes the DELTA_UP operation. There is a problem that does not satisfy the BLER.

That is, in 3GPP Extended Code Division Multiple Access (WCDMA), a plurality of TRANSPORT BLOCKs exist in one TRANSPORT CHANNEL, and a plurality of TRANSPORT CHANNELs are transmitted through the same frequency channel (PHYSICAL CHANNEL).

Therefore, in the conventional method in which a target signal-to-noise ratio TARGET SIR exists in the frequency channel unit, there is a problem in that the plurality of transport channels cannot be controlled by the same target signal-to-noise ratio TARGET SIR.

It is an object of the present invention to provide a method for achieving a desired communication quality by using bit error check values of each channel and block when a plurality of channels and blocks exist in one frame.

The present invention devised to achieve the above object is, in the mobile terminal power control of the base station system, there are a plurality of transport blocks in the transport channel unit; An initial step of setting an error rate in block units and setting parameters of delta-up and delta-down; Setting a parameter in the process, receiving a transport block of a unit time, and checking a sial to determine whether a transport block is received; If it is determined that the transport block is received in the process, determining whether all block signals of the transport channel are normal or abnormal and calculating and setting a corresponding new target ES; In the case where the outer loop power control is continued, the feedback process returns to the above checking process, and when the outer loop power control is not performed, the continuous loop proceeds to the end.

In addition, the present invention has been made in order to achieve the above object, receives the radio signal transmitted from the mobile terminal and outputs a separate sial value for each transport channel and wirelessly outputs the output power control signal of the mobile terminal A base station; A base station controller is configured to analyze a sial value applied to each transport channel from the base station, output each target ES, select a highest value, and output the target ES to the base station.

In addition, the present invention has been made in order to achieve the above object, the base station controller is a process of continuously checking whether the code division multiple access method signal is received from the mobile terminal; Confirming each sial of each transport channel when a signal is received in the process and determining each target sial value using the identified sialci value; The highest value is selected from each target SL value by the above process, the channel where no data is transmitted is adjusted to the highest target SL value, and the channel to which data is transmitted is powered by the previous target IS value. When the control is performed and the portable terminal continuously transmits the signal, the mobile terminal returns to the acknowledgment process and terminates when the mobile terminal does not transmit the signal.

In addition, the present invention devised in order to achieve the above object, by analyzing each sial value applied to each transport channel from the base station to calculate a target ESAL value for the corresponding power control, the calculated target A base station controller including an intermediate convergence unit configured to select a converged medium value of the SL value and output the target IS value; A power adjusting unit for wirelessly outputting an output power control signal for controlling the output power of the portable terminal by using a target SL value input from the base station controller; A receiver which detects a signal wirelessly received from the portable terminal and applies a corresponding control signal to the power adjuster and separates and outputs a received signal for each transport channel; Analysis of the signal applied from the receiving unit is characterized by consisting of a base station consisting of a plurality of sialic si confirmed unit to check each sial value and output to the base station controller, respectively.

In addition, the present invention devised to achieve the above object, by analyzing the sialic value applied to each transport channel from the base station to set a channel having a high sialic value in units of blocks as a reference channel and the reference channel A base station controller for analyzing a corresponding sial value of the base station and outputting the target sial value to a base station; A power adjusting unit for wirelessly outputting an output power control signal for controlling the output power of the portable terminal by using a target SL value input from the base station controller; A receiver which detects a signal wirelessly received from the portable terminal and applies a corresponding control signal to the power adjuster and separates and outputs a received signal for each transport channel; The base station includes a plurality of sial acknowledgment units each of which analyzes the signal applied from the receiver to check each sial value and outputs the sial to the base station controller.

In addition, the present invention has been made in order to achieve the above object, the base station controller is a process for setting a parameter value required for operation, and continues to determine whether a radio signal is received from the mobile terminal through the base station; In the above process, when the reception of the radio signal is confirmed, the detection and detection of the sial value is determined according to each transport channel, the process of setting the channel of the high sial value in block units as the reference channel and outputting the sial value of the corresponding channel. and; Setting a target SL value using the sialic value output in the process and controlling a corresponding output power; Analyzing the sial value of each transport channel applied from the base station in units of blocks, and when a value lower than the value of the reference channel is detected, the reset channel is reset to the reference channel and fed back to the output power control process. There is this.

1 is a functional configuration diagram of the outer loop power control device according to the prior art,

2 is a flowchart illustrating a method for controlling outer loop power of a multiblock according to the present invention;

3 is a functional diagram of a multi-channel outer loop power control device of the present invention,

4 is a flowchart illustrating an operation of a multi-channel outer loop power control device according to the present invention;

5 is a functional block diagram of a multi-block and multi-channel outer loop power control device of the present invention,

6 is a functional block diagram of an outer loop power control apparatus using a multi-block and multi-channel reference channel of the present invention.

7 is a flowchart illustrating a method for operating an outer loop power control apparatus using a reference channel of multiple blocks and multiple channels according to the present invention.

** Explanation of symbols on the main parts of the drawing **

10,100,300,500: Base station controller 20,200,400,600: Base station

30: portable terminal 110: power control unit

120: selection unit 210, 410, 610: receiving unit

220,420,620: Power control unit 230,430,630: Sial check unit

310: intermediate convergence unit 510: channel selection unit

520: power control unit

Hereinafter, multi-block and multi-channel outer loop power control according to the present invention will be described with reference to the accompanying drawings.

2 is a flowchart illustrating a method for controlling an outer loop power of a multi-block according to the present invention, FIG. 3 is a functional configuration diagram of a multi-channel outer loop power control device according to the present invention, and FIG. 5 is a flowchart illustrating a method for operating a multi-channel outer loop power control device according to an embodiment of the present invention. FIG. 5 is a functional block diagram of a multi-block and multi-channel outer loop power control device according to an embodiment of the present invention. FIG. 7 is a flowchart illustrating a method of operating an outer loop power control apparatus using reference blocks of multiple blocks and multiple channels according to the present invention.

Referring to FIG. 2, in the multi-block outer loop power control method according to the present invention, when there are a plurality of transport blocks in a transport time unit (TTI: TRANSMISSION TIME INTERVAL), the target quality Initial step (S10) of setting the block unit error rate (BLER: BLOCK ERROR RATE) and setting the parameters of delta-up (DELTA_UP) and delta-down (DELTA_DOWN),

In the initial process (S10), the parameter is set, a transport block of a unit time (TTI: TRANSMISSION TIME INTERVAL) is received, and a check is received (CRC: CYCLIC REDUNDANCY CHECK) to check whether the transport block has been received. Determining whether a transport block is received or not received in the TTI section, and if so, checking a corresponding CRC (S20); If the transport block is not received, a confirmation process consisting of a process (S30) to proceed to the continuing process (S80) to be described later,

If it is determined that the transport block is received in the checking process (S30), it is determined whether all CRCs of the transport channel are normal or abnormal, and calculates and sets a new target TARGET SIR. Determining whether all CRCs of the received transport block are normal or not (S40); If it is not normal in the determination process (S40), the process of performing a delta-up (DELTA_UP) to calculate the target SIR (TARGET SIR) at the rate of the CRC ERROR (S50); If normal in the determination step (S40), calculating a delta down (DELTA_DOWN) operation of a target SIR (S60); A setting process comprising a step (S70) of setting a new target SL that is calculated in the calculation process (S50, S60) as a target quality (BLER),

If the outer loop power control (OUTER LOOP POWER CONTROL) is continued, the feedback (FEEDBACK) to the confirmation process (S20), if not continued, it consists of a continuous process (S80) to proceed to the end.

Hereinafter, multiblock outer loop power control having the above configuration will be described with reference to FIG. 2.

FIG. 2 illustrates a case in which a plurality of CRCs are transmitted due to the presence of several transport blocks in one transport channel, and when several transport blocks exist, respectively. It utilizes the CRC check result of all transport blocks in which a CRC of.

Each sialic (CRC) check result is used as follows.

Deltadown (DELTA_DOWN) and deltaup (DELTA_UP) are determined by applying the existing equation 3 algorithm.

DELTA_UP = K * DELTA_DOWN

The following function is performed according to the CRC check result in the unit time (TTI: TRANSMISSION TIME INTERVAL) where coding and interleaving are performed at once.

MOD_DELTA_DOWN = DELTA_DOWN

NUM_TRBLOCK: Number of blocks in one transport channel.

NUM_CRCERROR: The number of blocks in which CRC ERROR occurred among the blocks included in the blocks in TTI.

CRC ERROR: TARGET SIR = TARGET SIR + MOD_DELTA_UP

Since the average value and the standard deviation of the target SIR for satisfying the desired target quality BLER are changed according to the step size for delta-up and delta-down, an optimal step size ( STEP SIZE).

The case where one siac (CRC) exists in one unit time (TTI) is called delta-up-sia (DELTA_UP_1CRC), and each CRC result of the transport block (TRANSPORT BLOCK) existing within the unit time (TTI) Assume that they are independent without affecting other CRC results.

When an error occurs in one CRC constituting the one frame FRAME, the delta-up DELTA_UP is determined as follows.

E {NUM_CRCERROR / NUM_TRBLOCK}: The average ratio of the BLOCK ratio in which CRC ERROR occurred to the total BLOCKs in the TTI.

In addition, when each CRC ERROR result is not independent, an optimal value is found by the following process.

1. The initial value is determined as described above.

2. Average the NUM_CRCERROR / NUM_TRBLOCK values.

There are two methods for calculating the average value, one is to set the window of a predetermined interval (WINDOW) as shown in Equation 9 below, and the other is to calculate the average value in the window interval. Likewise, the average value is taken by the ONE POLE FILTER.

The delta up (DELTA_UP) is adjusted using the average value (AVERAGE VALUE) obtained from the above equation.

Referring to FIG. 3, the outer loop power control in the case where a plurality of transport channels exist in the unit time (TTI) will be described.

Referring to FIG. 3, a plurality of power controllers analyzing the respective CRC values applied to each transport channel from the base station (NODEB) 200 and calculating target TASR values for the corresponding power control ( 110); A base station controller (RNC) including a selector 120 that selects a maximum value among a plurality of target esl values applied from the plurality of power controllers 110, sets a target esl value, and outputs the target esl value to the base station 200. With 100,

A power adjuster 220 for wirelessly outputting an output power control signal (TPC) for controlling an output power of a mobile terminal (UE) using a target SL value input from the base station controller 100; A receiver 210 which detects a signal wirelessly received from a mobile terminal (UE), applies a corresponding control signal to the power adjuster 220 and separates and outputs a received signal for each transport channel; A base station (NODEB) 200 including a plurality of CRC checking units 230 for analyzing and analyzing the signals applied from the receiving unit 210 to identify respective CRC values and outputting the CRC values to the base station controller 100, respectively. It is composed of

The configuration as described above in detail, each transport channel received by the base station 200 has a different target quality (QUALITY) (BLER), the coding (CODING) scheme and the interleaving size (INTERLEAVING DEPTH) is different .

Each transport channel requires a separate outer loop power control function, but since the same physical channel is used to wirelessly connect to the base station 200, the same target TARGET is used. SIR) should be used.

If the coupling ratio is well set by RATE MATCHING, the target quality of all transport channels may be satisfied even if the coupling ratio is operated by one physical channel.

If there is a difference in the target TARGET SIR that satisfies the desired quality of each transport channel, in order to ensure that all transport channels are satisfied, some channels may be of higher quality than the target quality (QUALITY). QUALITY).

The outer loop power control method when there are multiple transport channels in the unit time (TTI) has three embodiments as follows.

In a first embodiment, each transport channel is controlled by a power control unit 110 in which the outer loop power control algorithm operates, and a target ES generated by each outer loop power control algorithm of the power control unit 110 is generated. The TARGET SIRs are applied to the selector 120 and compared with each other, and thus, the target SIR values having the largest value are selected and set as reference values, and are wirelessly transmitted to the mobile terminal UE through the base station 200.

The up step size (UP STEP SIZE) and the delta up (DELTA_UP) of each transport channel are set to constant values as shown in the following equation.

CHANNEL 1: DELTA_DOWN1 = 1 / K * DELTA_UP

CHANNEL 2: DELTA_DOWN2 = 1 / K * DELTA_UP

CHANNEL N: DELTA_DOWNN = 1 / K * DELTA_UP

As described above, the power controller 110 of the base station controller 100 inputs a CRC result of each transport channel output by the CRC checker 230 of the base station 200 and sets a target SIR value. The adjusted target SL value is applied to the selector 120 and outputs a target TARGET SIR value having the highest value to the base station 200.

The above method works well when there is always a transport block in each transport channel and always has a CRC result, but it may malfunction when there is no CRC result in any one transport channel. have.

Considering the above case, it operates as follows.

1. Each transport channel determines a TARGET SIR according to each CRC result.

2. Select a channel having the highest TARGET SIR among the transport channels having the CRC result. That is, the maximum value is selected among target ARs of transport channels transmitted in the same unit time (TTI).

3. Adjust the target TS of the transport channel that is not transmitted within the current TTI to the maximum target TS value, and in case of transmission, control the outer loop power based on the previous target TS value. .

However, the above scheme sets the target ESAL value higher than the reference transport channel.

Referring to FIG. 5, the second embodiment will be described in the outer loop power control of the multi-block and the multi-channel.

Referring to FIG. 5, each CRC value applied to each transport channel from the base station (NODEB) 400 is analyzed to calculate a target SIR value for the corresponding power control, and to simultaneously calculate the values of all transport channels. By satisfying the target quality (BLER), the intermediate convergence unit 310 that selects the converged to the median value of all the target SR value, set to the target SL value and output to the base station 200 includes A base station controller (RNC) 300,

A power adjuster 420 for wirelessly outputting an output power control signal (TPC) for controlling the output power of the mobile terminal (UE) by using a target SL value input from the base station controller 300; A receiving unit 410 which detects a signal wirelessly received from a mobile terminal (UE), applies a corresponding control signal to the power adjusting unit 420, and separates and outputs a received signal for each transport channel; Analyze and process the signal applied from the receiving unit 410 to confirm each CRC value and comprises a base station (NODEB) (400) consisting of a plurality of sialik confirming unit 430 respectively output to the base station controller 300 do.

The second example using the above configuration is by the intermediate convergence unit 310 of the base station controller 300, and converges the intermediate value using all CRC values of the multiple transport channels detected and confirmed by the base station 400. In this case, the target ESAL value is determined based on the converged median value. In this case, a plurality of transport blocks exist in one transport channel, and each transport channel is adapted to each target ESAL value. Set each parameter.

CHANNEL 1: DELTA_DOWN1 = 1 / K * DELTA_UP

CHANNEL 2: DELTA_DOWN2 = 1 / K * DELTA_UP

CHANNEL N: Delta_DOWNN = 1 / K * DELTA_UP

In addition, all CRC results according to each TTI reference time point determine a target SL value through an algorithm such as the following equation.

The above equation applies to all CRC results where each transport channel has a different operation.

When the above equation is applied, the convergence from the different target ESAL values satisfying the QUALITY of each transport channel from the target ESAL value of the intermediate value satisfying the target quality BLER of each channel.

In such a case, some transport channels have a higher quality than the target quality, and some transport channels have a lower quality than the target quality.

6 and 7, an apparatus and a method for controlling an outer loop power using a reference channel of multiple blocks and multiple channels will be described.

Referring to FIG. 6, the apparatus for controlling an outer loop based on a multi-block and multi-channel reference channel according to the present invention analyzes each sial value applied to each transport channel from the base station 600 in units of blocks. A channel selector 510 which selects a reference transport channel as a channel for generating a sialic value of a high block unit, and outputs a corresponding sialic value (CRC) value of the selected transport channel; A base station controller (RNC) 500 including a power controller 520 that calculates and outputs a target SL value using a CRC value applied from the channel selector 510;

A power adjuster 620 for wirelessly outputting an output power control signal (TPC) for controlling the output power of the mobile terminal using a target SL value applied from the base station controller 500; A receiving unit 610 which detects a signal wirelessly received from a mobile terminal (UE), applies a corresponding control signal to the power adjusting unit 620, and separates and outputs a received signal for each transport channel; Analyze and process the signal applied from the receiving unit 610 to determine each sialic (CRC) value and outputs to the base station controller 500, respectively, a base station 600 consisting of a plurality of sialic acknowledgment unit 630 It is composed.

In addition, the channel selector 510 analyzes a sial value for each transport channel applied from the base station 600, and initially sets a channel having a high sial value in block units as a reference channel. Output a value to the power control section; Determining whether there is a transport channel having a value lower than a block-to-block value of a predetermined current reference channel; As a result of the determination, if there is a transport channel having a low block-by-value signal value, the channel is reset to the reference channel, and the signal value of the channel value is output to the power controller from the next step.

Referring to FIG. 7, the method for operating an outer loop power control apparatus using a multi-block and multi-channel reference channel according to the present invention sets a parameter value required for operation by the base station controller 500 (S200). ), Continuously checking or determining whether a radio signal is received from the mobile terminal (UE) through the base station 600 (S210);

When the reception of the radio signal is confirmed in the process (S210), the CRC value is identified and detected by the transport channel (S220), and the transport of the high CRC value in the block (BLOCK) unit Setting a channel as a reference channel and outputting a CRC value of the corresponding transport channel (S230);

Setting a target SL value using the sial value output in the step S230 and controlling a corresponding output power (S240);

Analyzing the CRC value for each transport channel applied from the base station 600 in units of blocks and resetting the detected channel to the reference channel if a value lower than the value of the current reference channel is detected. By returning to, the sialsi value for each transport channel applied from the base station 600 is analyzed in units of blocks (BLOCK) to determine whether there is a value lower than a corresponding value of the current reference channel (S250); If there is a CRC value lower than the current reference channel in the determination (S250), the corresponding channel is reset to the reference channel and the corresponding sial value is output (S260); If it is determined that the radio signal is continuously received from the portable terminal, the control unit returns to the power control process and terminates (S270) if it is not received.

According to the third embodiment of the above configuration, the outer loop power control for selecting the multi-block and multi-channel reference transport channel of the present invention will be described in detail with reference to FIGS. 6 and 7.

The base station controller 500 sets a channel having the highest BLER value as a reference channel (REFERENCE CH) by calculating a BLER value for checking a CRC value of a block unit among all transport channels inputted, and corresponding unit time (TTI). The other channels in the subcarrier check whether the quality is satisfied, and if there is a transport channel that does not satisfy the quality, the reference channel of the outer loop power control is reset to a channel that does not satisfy the quality.

The target ES by the reference channel is operated as follows by using the target ES of the lowest value among all the transport channels included in the unit time (TTI).

1. Set each parameter to each target ES.

CHANNEL 1: DELTA_DOWN1 = 1 / K * DELTA_UP

CHANNEL 2: DELTA_DOWN2 = 1 / K * DELTA_UP

CHANNEL N: DELTA_DOWNN = 1 / K * DELTA_UP

2. Select one transport channel as a reference channel, set and operate a target SL in accordance with the outer loop power control method of the reference channel, and initially select a transport channel requiring high target quality (BLER). .

3. Measure the target quality (BLER) of the other channels. After the measurement for a certain period, if there is a transport channel that does not meet the target quality (TARGET BLER), the channel is reset to the reference channel of the outer loop power control. When multiple channels are not satisfied, the channel with the most difference toward the lower side than the current target quality (QUALITY) is selected and set as the reference channel.

4. The outer loop power control is performed according to the CRC value of the reference transport channel.

5. The process is repeated by repeating step 3 above.

In general, when there are multiple transport channels, it is assumed that the target ES to satisfy the desired quality (BLER) is similar, and the RMA (Rate Matching Attribute) value, which is a ratio of combining the multiple transport channels, is not properly set. If not, it allocates more output power than necessary to the corresponding UE.

Therefore, the present invention relates to a method for setting an RMA according to the measurement result after measuring the quality of a mobile station (UE) at a base station (NODEB) 600.

The RMA weights the number of bits of each channel at the rate matching rate, performs PUNCTURING or REPETITION, and the ratio of the RMA can be regarded as the bit power ratio of each channel. Based on the method of performing loop power control.

After measuring the target quality (BLER) of each transport channel, if the quality of other transport channels except for the reference transport channel is different from the desired quality, the RMA values of the channels are adjusted and transmitted to the transmitter.

If the RMA value of a specific channel needs to be raised, but if it is already at the MAXIMUM value or the MINIMUM value, the RMA values of all transport channels are adjusted by the following algorithm.

RMA = RMA + RMA_DELTA_UP

IF, BLER _target <BLER _meas -hist1

RMA = RMA-RMA_DELTA_DOWN

IF any, RMA> RMA _max

All RMA = RMA-RMA_max_down

IF any, RMA <RMAmin

All RMA = RMA + RMA_max_down

There are two methods for transmitting the above information to the mobile terminal through the base station transmitting terminal.

The first is to transmit the calculated value of the RMA value itself by transmitting the value calculated by the algorithm equation described above.

Secondly, in the current state, only the information for raising or decreasing the RMA value of a specific transport channel and calculating and applying the RMA value are performed by the base station (NODEB) 600 transmitting end.

RMAC = 1

IF, BLER _target <BLER _meas -hist2

RMAC = 0

When the RMAC is 1, the output power of the mobile terminal UE is increased by RMA_DELTA_UP, and when the RMAC is 0, the output power control signal TPC is lowered by RMA_DELTA_DOWN.

Therefore, through the outer loop power control of the above configuration, in the extended code division multiple access method base station system, the output power of the mobile terminal by multiple blocks and multiple channels is easily and simply controlled.

According to the present invention having the above-described configuration, when a plurality of blocks exist in one unit time (TTI) in an extended code division multiple access method mobile communication system, a desired target quality (CRC) value of each block may be used. There is an industrial use effect to secure the BLER).

In addition, there is an industrial use effect of securing a target quality even when there are a plurality of transport channels and a plurality of channels using the same target RS, and when the coupling ratio (RMA) is not properly set.

In addition, since each mobile terminal maintains an optimal call quality, there is a convenient effect in improving reliability that can transmit a communication signal without error.

Claims (13)

In the power control of the mobile terminal of the base station system, when there are a plurality of transport blocks in a transport channel unit, The initial process of setting the block unit error rate of the target quality and the delta up and delta down parameters, Setting a parameter in the above process, receiving a transport block of a unit time, and confirming whether the transport block has been received by checking a sial; If it is determined that the transport block has been received in the above process, it is determined whether all the sialsi in the transport channel is normal or abnormal, the setting process for calculating the new target ES and set the target quality; And if the outer loop power control continues, returning to the checking process, and if not, continuing to end. The method of claim 1, wherein the checking process, Determining whether a transport block is received or not in a unit time interval, and when receiving, checking a corresponding sial; When the transport block is not received, the outer loop power control method of the multi-block and multi-channel characterized in that the configuration proceeds to the process of continuing. According to claim 1, The setting process, Determining whether all sial of the received transport block are normal; If it is not normal in the determination process, the process of delta-up the target ES at the rate of the error occurred in the siaal; If normal in the determination process, the process of performing a delta down operation of the target ES; The outer loop power control method of the multi-block and multi-channel characterized in that the configuration consisting of the process of setting a new target ES calculated in the calculation process. A base station for receiving a radio signal transmitted from a portable terminal, separating and outputting a sial value for each transport channel, and wirelessly outputting an output power control signal of the portable terminal; A multi-block comprising a base station controller configured to analyze a sial value applied to each transport channel from the base station, output each target ES, select a highest value, and output the target ES to the base station And multi-channel outer loop power control device. The method of claim 4, wherein the base station, A power adjusting unit for processing a target SL value input from the base station controller according to a control signal and outputting the output value as an output power control signal of the portable terminal; Receiving unit for receiving a wireless signal transmitted from the mobile terminal, and outputs separated by transport channels, And an outer loop power control apparatus for a multi-block and multi-channel characterized in that a plurality of sial acknowledgment units are configured to detect and output a sial value for each transport channel that is divided from the receiving unit. The method of claim 4, wherein the base station controller, A plurality of power controllers for analyzing a sial signal applied to each transport channel from the base station and outputting a target esl value; The outer loop of the multi-block and the multi-channel, characterized in that the configuration consisting of a selection unit for comparing and analyzing the target ES values respectively input from the plurality of power control unit, and selecting the highest value, and outputs the target ES value to the base station Power control device. The base station controller continuously checks whether a code division multiple access signal is received from the mobile terminal; If the signal is received in the above process is to determine the siasi each transport channel and determine each target sial value with the siasi value confirmed; The highest value is selected from each target SL value by the above process, the channel where no data is transmitted is adjusted to the highest target SL value, and the channel to which data is transmitted is powered by the previous target IS value. Control, and if it is determined that the portable terminal continues to transmit the signal, the mobile terminal returns to the acknowledgment process and terminates when the mobile terminal does not transmit the signal. Control method. Analyzes each sial value applied for each transport channel from the base station to calculate a target esl value for the corresponding power control, and selects the converged to the median value of the calculated target esl value to target esl value A base station controller including an intermediate convergence unit for outputting A power adjusting unit for wirelessly outputting an output power control signal for controlling the output power of the portable terminal by using a target SL value input from the base station controller; A receiver which detects a signal wirelessly received from the portable terminal and applies a corresponding control signal to the power adjuster and separates and outputs a received signal for each transport channel; Analyze and process the signal applied from the receiving unit to determine each sial value and outputs to the base station controller, the base station consisting of a plurality of sial acknowledgment unit, characterized in that the multi-block and multi-channel outer loop power control Device. Analyzes the sial value applied to each transport channel from the base station, sets a channel having a high sial value as a reference channel in block units, analyzes the corresponding sial value of the reference channel, and outputs the target sial value to the base station. Base station controller, A power adjusting unit for wirelessly outputting an output power control signal for controlling the output power of the portable terminal by using a target SL value input from the base station controller; A receiver which detects a signal wirelessly received from the portable terminal and applies a corresponding control signal to the power adjuster and separates and outputs a received signal for each transport channel; Analyze and process the signal applied from the receiving unit to determine each sial value and outputs to the base station controller, the base station consisting of a plurality of sial acknowledgment unit, characterized in that the multi-block and multi-channel outer loop power control Device. The method of claim 9, wherein the base station controller, A channel selector configured to analyze a sial value for each transport channel applied from the base station to set a channel having a high sial value in units of blocks as a reference channel and to output a corresponding sial value; And a power control unit for analyzing the sial value applied from the channel selection unit and outputting the target sial value to the base station. The method of claim 10, wherein the channel selector, Analyzing a sial value for each transport channel applied from the base station, initially setting a channel having a high sial value in block units as a reference channel and outputting the corresponding sial value to the power control unit. It is determined whether there is a transport channel having a value lower than the set value of the block unit of the current reference channel. And if there is a transport channel having a low value of the unit-to-block value at the determination result, resetting the channel to the reference channel and outputting the corresponding signal value to the power controller from the next step. Multi-channel outer loop power control device. The base station controller sets a parameter value necessary for operation and continuously determines whether a radio signal is received from the mobile terminal through the base station; In the above process, when the reception of the radio signal is confirmed, the detection and detection of the sial value is determined according to each transport channel, the process of setting the channel of the high sial value in block units as the reference channel and outputting the sial value of the corresponding channel. and, Setting a target SL value using the sialic value output in the above process and controlling a corresponding output power; Analyzing the sial value of each transport channel applied from the base station in units of blocks, and if a value lower than the value of the reference channel is detected, the controller is configured to reset the detected channel to the reference channel and return to the output power control process. Method of operating a multi-block and multi-channel outer loop power control device characterized in that. The method of claim 12, wherein the resetting process, Analyzes the sial value of each transport channel applied from the base station in units of blocks to determine whether there is a lower value than the corresponding value of the current reference channel. In the above judgment, if there is a lower value of the sialic value in the block unit than the current reference channel, the corresponding channel is reset to the reference channel and the corresponding sial value is output. The method of operating an outer loop power control apparatus of a multi-block and multi-channel according to the configuration characterized in that it is determined that the radio signal continues to be received from the portable terminal is returned to the power control process and terminates if not received.