KR100605624B1 - OLPC convergence reforming device of the UMTS terminal and controlling method therefore - Google Patents

Abstract

The present invention stores a target SIR value according to OLPC transmitted from a neighbor base station.

The OLPC initial value setting step, and the calculated delta A value, actual error occurrence block value (data error block number / total data block number), and power ratio allocation value (RATE_MATCHING_RATIO) are stored after the OLPC initial value setting step. It provides a control method of the OLPPC convergence improvement apparatus of the UTM terminal consisting of multiplying the OLPC execution step of calculating the adjustment value for the optimal target SIR, and informs the base station of the calculated adjustment value to correct the data error.

As described above, the present invention reduces the data reception error rate of the UMTS terminal by operating the target SIR of the OLPC as a value calculated by multiplying the actual error block value and the distribution ratio of the power ratio in addition to the delta A value when a data error occurs in the UMTS terminal. This significantly improves the quality of service (QoS) of the UMTS terminal accordingly.

OLPC, target SIR, data error, delta A, error block count, total block count, adjustment value

Description

OLPC convergence reforming device of the UMTS terminal and controlling method therefore}

1 is an explanatory diagram illustrating a UMTS terminal using a conventional OLPC method.

2 is an explanatory diagram illustrating a UMTS terminal using the OLPC method of the present invention.

3 is a flowchart of the present invention.

<Detailed Description of Codes>

1: UMTS terminal 2: Handset

3: codec section 4: MSM section

5 memory unit 6 LCD panel

7: Key Panel Unit 8: Base Station

9: terminal

The present invention relates to an OPC PC convergence improvement apparatus and a control method thereof of a UTM terminal, and in particular, a value calculated by multiplying an actual error block value and a power ratio distribution in addition to the delta A value when a data error occurs in a UMTS terminal. The present invention relates to an OLPPC convergence improvement device for a UTM terminal operating a target SIR and a control method thereof.

In general, mobile phones, especially mobile phones, are divided into hexagonal cells of several km to several ten kilometers in diameter in North America in the early 1980s, and the same frequency channel is repeatedly used in geographically separated cells. According to the first commercialization of a cellular phone (cellular-phone) that implements the radio channel switching function between cells has grown rapidly. In recent years, however, the universal mobile telecommunication system is capable of transmitting "third generation", broadband packet-based text, digitized voice or video, and multimedia data at a high speed of 2 Mbps or higher, regardless of where the mobile or computer users are anywhere in the world. Networks are developed to provide consistent services. In this case, a UMTS terminal using such a UMTS network normally operates a target signal interference ratio (SIR) of an outer loop power control (OLPC) for a quality of the service (QoS).

Then, referring to the conventional mobile communication system as described above with reference to Figure 1, the UMTS terminal (70, 71) for performing a voice call by transmitting and receiving a call on the move and performing power control based on the target SIR for OLPC, The UMTS terminal 70, 71 receives a delta A [(Delta A: ex) 0.5dB, 1dB, 2dB] value for processing a call signal transmitted from the terminals 70, 71 or operating a target SIR. ), The base station 72 executes a power control.

Meanwhile, referring to the operation of the conventional mobile communication system as described above, first, when power is applied to the terminal 70, the terminal 70 proceeds to an initialization state to form necessary information in the internal memory and read each parameter. In addition, the terminal 70 executes an initialization process and receives information necessary for the system, including target SIR information, through a traffic channel (signal channel) transmitted from the base station 72, and proceeds to a standby state.

When the call is connected, the terminal 70 performs a call processing operation. In this process, the power strength signal is measured from the base station 72, and the measured signal and the target SIR previously received from the base station 72 are measured. Perform OLPC by comparing the values.

At this time, the terminal 70 requests the base station 72 to increase the power signal by delta A with respect to the target SIR value when an error occurs in the data transmitted / received during the OLPC, whereas when no error occurs (delta A) Requires a ratio of * (1 / Target BLER) to be lowered. Thus, the UMTS terminal 70 as described above is to correct the data error through the OLPC process as described above.

However, since the conventional OLPC operating method of the UMTS terminal as described above determines that a data error occurs in all blocks even if an error occurs only in one of the data blocks received within a specific time, the base station requires excessive transmission power. This caused the system to demand excessive service quality, and also caused a problem that the target A value of the OPLC was not precisely controlled, thereby increasing the power loss of the base station.

Accordingly, the present invention has been invented to solve the above-mentioned conventional problems. Since the UMTS terminal appropriately adjusts the data reception error occurrence rate according to the quality of service required by the system, according to the appropriate power consumption of the base station and the UMTS terminal, An object of the present invention is to provide an OPC convergence improvement apparatus and a control method of a UE terminal satisfying a required quality of service (QoS).

Another object of the present invention is to operate the target SIR precisely without the need for a separate additional equipment in the terminal for OLPC, so the OPM PC convergence improvement device of the UMTS terminal significantly improves accordingly and The control method is provided.

In order to achieve the above object, the present invention provides a target SIR operation of the OLPC in a Universal Mobile Telecommunication System (UMTS) terminal that adjusts a target interference ratio (SIR) with a neighboring base station by an outer loop power control (OLPC) method. The controller which operates the target SIR of OLPC by calculating the product by multiplying the actual error occurrence block value (data error block number / total data block number) by the power ratio (RATE_MATCHING_RATIO) in addition to the delta A value, and connecting to the controller. Of the UE terminal including a memory unit for storing the delta A value, the actual error block value (data error block number / total data block number), and the distribution ratio (RATE_MATCHING_RATIO) calculated by the controller for the OLPC. Provide PC convergence improvement device.

Another feature of the present invention is an OLPC initial value setting step of storing a target SIR value according to OLPC transmitted from an adjacent base station in a memory, and when it is confirmed that an error has occurred in the data received from the base station after the OLPC initial value setting step. A delta value calculating step of reading a delta A value preset according to a target SIR from a memory, and an actual number of data blocks for which an actual error has occurred from the total number of data blocks received during a specific time during the delta value calculating step. A power ratio distribution value calculating step of calculating a power ratio allocation value (RATE_MATCHING_RATIO) for finely adjusting the power ratio during the error generating block calculating step and the actual error generating block calculating step, and after the power ratio distribution value calculating step Delta A value calculated by each step, actual error occurrence block value (data error block number / total data block number) and wave By multiplying the distribution value (RATE_MATCHING_RATIO) the ratio calculated adjustment value for the optimum target SIR, and in the oil to notify the adjustment values for the calculated optimal target SIR to the base station consisting of OLPC running correcting data errors empty S terminal Provides a control method of OLP convergence improvement device.

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

As shown in FIG. 2, the UMTS terminal 1 to which the present invention is applied includes a codec unit 3 for processing a voice signal input and output through the handset 2, and a voice input and output through the codec unit 3. MSM unit that operates target SIR of OLPC by processing signal wirelessly and multiplying real error block value (data error block number / total data block number) and power ratio (RATE_MATCHING_RATIO) in addition to delta A value. Station modem: 4), delta A value, actual error block value (data error block number / total data block number) calculated by MSM unit 4 for various phone numbers and OLPCs connected to the MSM unit 4; And a memory unit 5 that stores distribution ratios RATE_MATCHING_RATIO of the power ratio.

Then, at one end of the MSM unit 4, the LCD panel 6 for displaying the operating state of the terminal 1 in text or graphics according to the display function control signal, and a key for inputting a function setting signal of the user. The panel part 7 is connected.

Here, the distribution ratio RATE_MATCHING_RATIO of the power ratio is a value for allocating a ratio of the power signal, and finely adjusts the power ratio, and this value is based on the UMTS Specification.

Next, a control method applied to the present invention terminal as described above will be described.

As shown in FIG. 3, the method proceeds from the initial state S1 to the OLPC initial value setting step S2 and stores the target SIR value according to the OLPC transmitted from the neighboring base station in the memory. After the OLPC initial value setting step S2, the data error occurrence checking step S3 is performed to check whether an error has occurred in the data currently received from the base station. In this case, when it is confirmed that no error occurs in the data received from the base station during the data error occurrence checking step S3, the process proceeds to the general call processing step S4 to execute normal call processing.

That is, when power is applied to the terminal 1 of the present invention, the MSM unit 4 of the terminal 1 proceeds to an initialization state, forms the necessary information in the internal memory, and reads each parameter. Then, the MSM unit 4 of the terminal 1 receives the information necessary for the system, including the target SIR value for the OLPC through the pilot channel and the sync channel transmitted from the base station 11 after performing the initialization process To store in the memory unit 5.

At this time, the MSM unit 4 of the terminal 1 maintains a state capable of receiving a system parameter or performing an appropriate response to various messages such as a call through a sink channel in a standby state.

Here, the MSM unit 4 of the terminal 1 recognizes when the user inputs a telephone number through the key panel unit 7 and presses a call button, and the user enters the telephone number into the memory unit 5. In addition to the storage, the system accesses the base station 8 through the access channel, and then transmits an outgoing signal to the corresponding telephone number. Then, the base station 8 processes the outgoing signal sent from the terminal 1 and transmits an incoming signal to the counterpart terminal 9 to form a call. That is, when a user of the terminal 1 inputs a voice signal through the handset 2, the codec unit 3 of the terminal 1 performs a signal processing on the voice signal input through the handset 2 and performs an MSM unit. Enter (4). The MSM unit 4 of the terminal 1 wirelessly processes the voice signal input through the codec unit 3 and transmits the voice signal to the counterpart terminal 9 via the base station 8 to make a normal call. .

However, when it is confirmed that an error has occurred in the data received from the base station during the data error occurrence checking step (S3), the process proceeds to the delta value calculating step (S5) to read the delta A value preset according to the target SIR from the memory. . During the delta value calculating step S5, the process proceeds to the actual error generating block calculating step S6 to calculate the number of data blocks in which an actual error occurs from the total number of data blocks received during a specific time (actual error generating block). Number / total blocks). In addition, during the actual error generation block calculating step S6, the power ratio allocation value calculating step S7 is performed to determine the power ratio allocation value RATE_MATCHING_RATIO to finely adjust the power ratio.

Meanwhile, during the power ratio allocation value calculating step (S7), the process proceeds to the OLPC execution step (S8) and the delta A value calculated by the steps (S5 to S7) and the actual error occurrence block value (number of data error blocks / total) The number of data blocks) and the distribution ratio (RATE_MATCHING_RATIO) of the power ratio are multiplied to calculate an adjustment value for the optimum target SIR and notify the base station of the calculated adjustment value to correct the data error.

In other words, if an error occurs in the received data while the UMTS terminal 1 is processing a call, the MSM unit 4 of the UMTS terminal 1 has an actual error block value (number of data error blocks) in addition to the delta A value. The total number of data blocks) and the distribution ratio (RATE_MATCHING_RATIO) of the power ratio, respectively, are calculated and stored in the memory unit 5, and the calculated values are multiplied with each other to calculate an optimal correction value for the target SIR of the OLPC. The base station 8 notifies the base station 8 of the corrected value for the power control, and performs power correction for the error.

On the other hand, the experimental correction value (C` ^ {*}) to the calculated adjustment value [(delta A value) * (data error block number / total data block number) * (RATE_MATCHING_RATIO)] during the OLPC execution step S8. A test correction value additional step of performing a fine adjustment for the data error by multiplying () may be further included.

 Here, the experimental correction value C` ^ {*} is determined by the service provider in addition to the adjustment value [(delta A value) * (data error block number / total data block number) * (RATE_MATCHING_RATIO)]. The error occurrence item set by the user can be adjusted more finely.

As described above, according to the present invention, when a data error occurs in the UMTS terminal, the target SIR of the OLPC is calculated by multiplying the delta A value by the actual error block value and the distribution ratio of the power ratio. Since the data reception error rate is properly adjusted according to the quality, it has the advantage of satisfying the appropriate power consumption of the base station and the quality of service (QoS) required for the UMTS terminal.

In addition, according to the present invention, since the target SIR can be precisely operated without the need for a separate additional equipment in the terminal for the OLPC, the functionality of the UMTS terminal is also significantly improved.

Claims (3)

In a universal mobile telecommunication system (UMTS) terminal that adjusts an adjacent base station and a target signal interference ratio (SIR) using an outer loop power control (OLPC) method, In order to operate the target SIR of the OLPC, the target SIR of the OLPC is operated by multiplying the actual error occurrence block value (data error block number / total data block number) and the distribution ratio (RATE_MATCHING_RATIO) in addition to the delta A value. And a memory unit connected to the control unit and storing a delta A value calculated by the controller for the OLPC, an actual error block value (number of data error blocks / total data blocks), and a distribution value of power ratios (RATE_MATCHING_RATIO). OPC convergence improvement device of the UE terminal, characterized in that. OLPC initial value setting step of storing target SIR value according to OLPC sent from neighboring base station in memory, and if it is confirmed that an error occurred in data received from base station after OLPC initial value setting step, delta set according to target SIR A delta value calculating step of reading an A value from a memory, an actual error generating block calculating step of calculating the number of data blocks in which an actual error has occurred from the total number of data blocks received during a specific time during the delta value calculating step; The power ratio distribution value calculating step of calculating the power ratio distribution value (RATE_MATCHING_RATIO) for finely adjusting the power ratio during the actual error generation block calculating step, and the power ratio distribution value calculated step after the step of calculating the power ratio distribution value Delta A value, actual error occurrence block value (data error block number / total data block number) and power ratio allocation value (RATE_MATCHIN OLPC execution step of calculating the adjustment value for the optimum target SIR by multiplying the G_RATIO) and the OLPC execution step of notifying the base station of the calculated adjustment value for the optimal target SIR to correct the data error Control method of PC convergence improvement device. The method according to claim 2, wherein an adjustment value [(delta A value) * (data error block number / total data block number) * for the calculated optimal target SIR during the OLPC execution step. (RATE_MATCHING_RATIO)] by further multiplying the experimental correction value (C` ^ {*}) by the experimental correction value additional step of calculating a precise control value for the target SIR convergence of the OPM PC of the UE terminal Control method of improvement device.

Images