WO2004004163A1 - Mobile station apparatus and amplitude reference decision method - Google Patents

Mobile station apparatus and amplitude reference decision method Download PDF

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Publication number
WO2004004163A1
WO2004004163A1 PCT/JP2002/006600 JP0206600W WO2004004163A1 WO 2004004163 A1 WO2004004163 A1 WO 2004004163A1 JP 0206600 W JP0206600 W JP 0206600W WO 2004004163 A1 WO2004004163 A1 WO 2004004163A1
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WO
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Prior art keywords
amplitude reference
channel
signal
station apparatus
power
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PCT/JP2002/006600
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French (fr)
Japanese (ja)
Inventor
Michiaki Takano
Hideto Aikawa
Akihiro Shibuya
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Mitsubishi Denki Kabushiki Kaisha
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; Arrangements for supplying electrical power along data transmission lines
    • H04L25/06Dc level restoring means; Bias distortion correction decision circuits providing symbol by symbol detection
    • H04L25/061Dc level restoring means; Bias distortion correction decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset

Abstract

A mobile station apparatus performs demapping for a packet channel signal by using a predetermined threshold value (amplitude reference). An amplitude estimation unit (14) decides the amplitude reference for performing demapping by using a signal of an individual pilot channel which is a transmission power control object channel and power distribution to respective channels given by an upper node layer signaling.

Description

Bright fine manual mobile station apparatus and the amplitude reference determining method art

The present invention, cellular mobile communication systems, for example, W-CDMA (wideband - Code Division Multiple Access) relates the mobile station apparatus for use in, in particular, the mobile station So啬 using multilevel modulation it relates the amplitude reference determining method in the. BACKGROUND

Figure 10 is a diagram showing an example of the configuration of a mobile communication system of a cellular scheme, in the figure, 101 is a base station, 102, 103, ... is a mobile station. In this system, the downlink from base station 101 to the mobile station 102, 103, and an uplink from the mobile station 102, 103 to the base station 101, channel transmission is carried out by. Further, in the mobile communication system of a cellular scheme, composed cell by pi port Ttochaneru from the base station 101, such cells, formed while no gap and over one lap. Although not shown, the base station to each other is connected to a wireless network center wire is connected from the wireless network center PSTN.

The first 1 figure, for example, described in the literature "3 GP P TS 25. 21 1 V5. 0. 0" is a diagram showing a channel between a base station and a mobile station. As shown, the downlink channel from the base station 101 to the mobile station 102, the common pilot channel, the dedicated pilot channels, common control channels, there is Pakettochiyane Le, uplink from the mobile station 102 to the base station 101 the channel, there is a feedback channel. Note that in practice there are other channels, but here, to extract only the parts related to the present invention. Further, FIG. 12 is a diagram showing the power distribution of the channel of the base station 101. In the channel of the base station 101, if the total power of the base station 1◦ 1 was I or, common pi port Ttochaneru (CP I CH: Common Pilot Channel) of the power distribution is "CP I CH- E c (power)" / I or next, the dedicated pilot channels: power distribution (DP I LO T dedicated pilot) is "DP I LOT- E c" / lor next, the common control channel (HS- SCCH: shared control channel for HS-DSCH) of power distribution ": HS- SCCH- E cj / lor next bucket preparative channel: power distribution (HS -DS CH High Speed ​​Downlink Shared channel) is" HS- DS CH-E c "Bruno I or.

The first 3 is a diagram showing a physical channel configuration of a common pilot channel. Common pilot channel consists of symbol that one slot all A. Here, for example, it consists of 10 symbols. Note that the one slot is one unit of a physical channel, e.g., 3. If the chip rate of 84Mc ps, 1 slot = 2560 Chip, and the length thereof becomes 0. 67 ms. The Also 1 symbol, phase axis component, the unit was orthogonal axis components grouped together, you can, for example, corresponding to the period of Chiya Ne lysate Chillon code. Therefore, the common pilot channel is 1 Shinponore = 256 Chip. Further, since the symbols of the common pilot channel is A == 1 + j, phase axis component, both quadrature axis component is +1 fixed data. Further, the common pilot channel is continuously transmitting the symbols to all the cells.

FIG. 14 is a diagram showing a physical Chiyanenore configuration of dedicated pilot channels. The individual-specific pilot channel, one slot power TPC field, Da ta Finore de constituted by P i 1 ot field. Then, Nbonore number varies in accordance with the data amount to be transmitted, also take a different format. Transmission power control commands sent in the uplink to the TPC is set, the Da ta voice, data, such as information is set, the P i 1 ot is set individual pilot Symposium Le.

Further, the P ilot, setting different Shimpo Le patterns from S lot # 0 to S lot # l 4. The first 5 is a diagram showing a symbol pattern of the P i 1 0 t. Here is expressed pilot symposium Honoré 1 Slot 2 symbols is performed in S lot # l 4 the identification of the slot from S lot # 0. 1 bit of each Shinponore corresponds to the in-phase component, the second bit corresponds to a quadrature component. In this case, the {0, 1} → {+, one}.

The packet channel, it is necessary amplitude reference for the multi-level modulation is used. Conventionally, the use of the common pilot channel, measures the power of a common pilot channel. Then, using the measurement result threshold of multilevel modulation bucket 'bets channel. Here, utilizing the fact that the power distribution of the packet channel power allocation of "HS- DSCH- E c" Bruno 1 or and the common pie port Ttochaneru "CPICH- E c" / \ or is fixed.

However, in the conventional mobile station using the channel described in the literature mentioned above, since the seeking amplitude reference using only the common pilot channel, Oite the cell boundary, Specifically, from the base station If the distance is far, the quality is there has been a problem that, to decrease.

The present invention was made in view of the above, that aims to provide a mobile station apparatus and the amplitude reference determining method for determining a reference amplitude using a dedicated pilot. Disclosure of the Invention

In the mobile station apparatus according to the present invention, using a predetermined threshold value (amplitude reference), provided with a de-mapping means, which performs demapping processing on the signal of the packet channel, in Kira, transmission power control a signal dedicated pilot channel is a target channel of the power distribution of each channel given by higher layer signaling, with individual pie port Tsu preparative amplitude reference determining means for determining the amplitude reference for performing Dematsupingu process , characterized in that it comprises a.

According to the present invention prevent, performs amplitude estimation corresponding to multi-level modulation, since a configuration for obtaining the amplitude reference using separate pie opening Ttochaneru which transmission power control is performed, a deterioration in quality even cell boundary it can.

In the mobile station according to the next invention, the individual because the pilot channel is a channel for transmission power control is applied transmission, and time of measurement of the power, the time of power distribution of the given dedicated pilot channel wherein the match, when.

According to this invention, since it was decided to match the time of the power distribution time and dedicated pilot channel measured power, it can be more appropriately realize a signaling processing power allocation.

In the mobile station according to the next invention, furthermore, the a SIR estimating means for estimating signal power to interference power ratio (SIR) using the signals of the individual pilot Channel is defined on the estimated SIR and pre a TPC command generation means for generating a transmit power control (TPC) command based on the target SIR and, wherein the individual pie port Tsu preparative amplitude reference determining means, at the time of power distribution of the given dedicated pilot channel characterized by interpolating the amplitude reference at TPC command cycle. According to the invention, using a downlink TPC command amplitude estimation processing, since a structure for interpolating the amplitude reference at TPC command cycle, leaving at realizing a more accurate amplitude estimation process.

In the mobile station according to the next invention, furthermore, the common pilot amplitude reference determining means for using the signal of the common pilot channel power fixed, determines the amplitude reference for performing demapping processing, the base depending on the distance between the station apparatus, characterized in that it comprises a comparison Roh selecting means for selecting either of said two amplitude reference.

According to the present invention, in accordance with the distance of the base station apparatus and the mobile station apparatus, since a configuration for selecting the amplitude reference estimated using the common pilot channels and amplitude reference estimated using the dedicated pilot channels, further precise a in the amplitude estimation process mobile station according to the next invention can realize, for the dedicated pilot channel transmit power control is a channel that is applied, and the time of measurement of the power, individual said given characterized in that to match the time of the power distribution pie port Ttochaneru, the.

According to this invention, since it was decided to match the time of the power distribution time and individual pie port Ttochaneru of measuring the power, it can be more appropriately realize a signaling processing power allocation.

In the mobile station according to the next invention is characterized in that Taseru lifting hysteresis to the selection process.

According to the present invention, since a configuration in which a hysteresis in the selection process of the amplitude reference, it is possible to reduce the switching frequency.

In the mobile station according to the next invention, furthermore, the a SIR estimating means for estimating signal power to interference power ratio (SIR) using the signals of the individual pilot Channel is defined on the estimated SIR and pre a TPC command generation means for generating a transmit power control (TPC) command based on the target SIR and, wherein the individual pie port Tsu preparative amplitude reference determining means, at the time of power distribution of the given dedicated pilot channel characterized by interpolating the amplitude reference at TPC command cycle. According to the present invention, in accordance with the distance of the base station apparatus and the mobile station apparatus, in addition to the configuration for selecting the amplitude reference estimated by using the amplitude reference common pi port Ttochaneru estimated using the dedicated pilot channels, further , using a downlink TPC command to the amplitude estimation process, because that was configured to add the processing for interpolating the amplitude reference, more accurate amplitude estimation processing can be realized by a TPC command cycle.

In the mobile station according to the next invention is characterized in that Taseru lifting hysteresis to the selection process.

According to the present invention, since a configuration in which a hysteresis in the selection process of the amplitude reference, it is possible to reduce the switching frequency.

In the mobile station according to the next invention, furthermore, combining means for performing Daipashichi synthesized by adding an individual pilot channel of the neighboring cell, wherein the individual pie port Tsu preparative amplitude reference determining means, after the synthesis a signal dedicated pilot channels, using said, the power distribution of each switch Yaneru, and JP ί laid determining the amplitude reference for performing demapping.

According to the present invention performs diversity combining by adding dedicated pilot channels of neighboring cells, due to a configuration for obtaining the amplitude criteria based on dedicated pilot channel after diversity combining, signal amplitude reference determined using individual pie opening Ttochaneru it can greatly improve 賴度.

In the amplitude reference determining method according to the next invention, by using a signal of an individual pilot channel is subject Chiyane Le transmission power control, the power distribution of the given Erareru each channel by higher layer signaling, the demapping individual pie port Tsu preparative amplitude reference determining step of determining the amplitude criteria for processing, comprising a.

According to the present invention performs amplitude estimation corresponding to multi-level modulation, prevention since it was decided to determine the amplitude reference using separate pie opening Ttochaneru which transmission power control is performed, a deterioration in quality even cell boundary it can.

In the amplitude reference determining method according to the next invention, the SIR estimation step of estimating a signal power to interference power ratio (SIR) using the signal of the dedicated pilot channel is subject Chiyane Le of the transmission power control, the estimated a TPC command generation step of generating a transmit power control (TPC) command based on the target SIR that is defined in advance and SIR, wherein the dedicated pilot channel signals and, bucket bets channel provided by higher layer signaling power distribution and power wherein time of the power distribution of the individual pilot channel is measured, and the use and TPC commands, and a separate pie port Tsu preparative amplitude reference determining step of determining the amplitude reference for performing Dematsubi ing process, to include to.

According to the invention, using a downlink TPC command amplitude estimation processing, since a structure for interpolating the amplitude reference at TPC command cycle, leaving at realizing a more accurate amplitude estimation process.

In the amplitude reference determining method according to the next invention, by using a signal of an individual pie port Ttochaneru a target Chiyane Le transmission power control, the power distribution of the given Erareru each channel by higher layer signaling, a de the individual pie port Tsu preparative amplitude reference determining step of determining the amplitude reference for performing the mapping process, using the signal of the common pie port Ttochaneru power fixed, common pilot amplitude determines the amplitude reference for performing Demabbingu process a reference determining step, depending on the distance between the base station apparatus, characterized in that it comprises a comparison / selection step of selecting one any force before Symbol two amplitude reference, the.

According to the present invention, in accordance with the distance of the base station apparatus and the mobile station apparatus, since it was decided to choose the amplitude reference estimated by using the amplitude reference common pi port Ttochaneru estimated using the dedicated pilot channels, further exact in the Sujihaba estimation process can be realized amplitude reference determining method according to still another aspect of the present invention, by using a signal of an individual pie port Ttochaneru a target Chiyane Le transmission power control signal power to interference power ratio (SIR) and SIR estimation step of estimating, the TPC command generation step of generating the estimated SIR pre-defined transmission power control based on the target SIR and (TPC) command, a signal of the dedicated pilot channel, upper Reiyashidana and power distribution of the individual pilot channel time of the measurement of the power distribution and the power of the bucket bets channel provided by the ring, Using a serial TPC command, and a separate pie port Tsu preparative amplitude reference determining step of determining the amplitude reference for performing Dematsubi ing process, using the signal of the common pilot channel power fixed, intends rows demapping include a common pi port Tsu preparative amplitude reference determining step of determining the amplitude reference for, depending on the distance between the base station apparatus location, and a comparison / selection step of selecting either one of the two amplitude reference the features.

According to the present invention, in accordance with the distance of the base station apparatus and the mobile station apparatus, and selecting the amplitude reference estimated by using the amplitude reference common pi port Ttochaneru estimated using the dedicated pilot channels, further, since it was decided to add a process of interpolating the amplitude reference downlink TPC command amplitude estimation processing with use les ,, TPC command cycle

, It can be realized more accurate amplitude estimation process.

'In the amplitude reference determining method according to the next invention, since the dedicated pilot Chiya, channel is a channel that applies the transmission power control, and the time of measurement of the power, before Symbol given dedicated pilot channel and JP ί insole to match the time of power distribution, the. '

According to this invention, since it was decided to match the time of the power distribution time and dedicated pilot channel measured power, it can be more appropriately realize a signaling processing power allocation.

In the amplitude reference determining method according to the next invention further comprises a synthetic step, to perform diversity combining by adding a separate path for the pilot channels of neighboring cells, wherein the individual pie opening Tsu preparative amplitude reference determining step, after the synthesis characterized by using the individual pie opening Ttochaneru.

According to the present invention performs Daipashichi synthesized by adding dedicated pilot channel of the neighboring cell, since it was decided to determine the amplitude criteria based on dedicated pilot channel after Daipashichi synthesis, Shin amplitude reference determined using individual pie opening Ttochaneru it can greatly improve Yoriyukido. . BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing the configuration of a first embodiment of the mobile station apparatus according to the present invention, FIG. 2 is a diagram illustrating a de-mapping processing in the demapping section, Figure 3 is a demapping is a diagram illustrating a de-mapping process in section, Figure 4 is a diagram showing the configuration of a second embodiment of a mobile station apparatus according to the present invention, Fig. 5, the implementation of the mobile station apparatus according to the present invention a diagram showing a configuration of the embodiment 3, FIG. 6 is a diagram showing an example of a reference for determining whether to use the value estimated by any Chiyane Le, FIG. 7 is moved in accordance with the present invention is a diagram showing the structure of an embodiment 4 of the station apparatus, FIG. 8 is a diagram showing a state of reception of the power distribution of the individual pie opening Ttochaneru using synchronous CFN, FIG. 9 is the present invention is a diagram showing the configuration of a sixth embodiment of the mobile station apparatus, the first 0 figures Ri FIG der showing an example of the configuration of a mobile communication system of a cellular scheme, first 1 figure literature "3 GPPTS 2 5. 2 1 1 V 5. 0. The base station and mobile station described in OJ is a diagram showing the channel between the first 2 drawing is a diagram showing the power distribution switch Yaneru base station, the first 3 drawing is a diagram showing a physical Chiyanenore configuration of a common pilot channel, the first 4 Figure is a diagram showing a physical channel configuration of the dedicated pilot channels, the first 5 figures best mode for carrying out the is a diagram showing a symbol pattern of the P i 1 ot. iNVENTION

To theory procedure in more detail the present invention will be described to the accompanying drawings. First, the configuration of mobile station apparatus according to the present invention. FIG. 1 is a diagram showing the configuration of a first embodiment of the mobile station apparatus according to the present invention. In Figure 1, 1 is the Chi catcher channel coding unit that performs processing for interleaving the transport block to the air former bracts, 2 is a diffusion modulation unit spreads the signal after channel coding, 3 spread after a D // a converter for converting a signal into an analog baseband signal (D / a), 4 is a filter (FIL) for performing waveform shaping, 5 frequency converter for performing a predetermined frequency conversion ( a U / C), 6 is the HPA, which performs signal amplification processing, 7 is an antenna, 8 Ri LNA der performing low noise amplification processing, 9 frequency converter for performing a predetermined frequency conversion (D / C), wherein 1 0 is a filter for removing noise, 1 1 is AZD converter for converting an analog signal after the noise removal to a digital signal (AZD), 1 2, 1 3 after AZD conversion a despreading unit for despreading the signals, 1 4 of despread signal power An amplitude estimating unit Motodzure level measurements Te, determine the threshold for demapping, 1 5 is a phase estimator to determine the phase rotation amount by using a known signal, 1 6 wherein said phase rotation a phase compensation unit that the amount Yore, Te to To償 phase, 1 7 is a Demabbingu process using Rere value Ki to the row U demapping unit, 1 8 process for outputting a transport block a channel decoding unit that performs.

Here, we describe the operation of the configured mobile station apparatus of the first embodiment as described above. First, data such as user information is provided to Chiyane Le coding unit 1 as a transport block. The channel coding unit 1 performs processing for interleaving the transponder over heat block the air former bracts. Specifically, CRC (Cyclic Redundancy Check) addition, convolution coding, rate matching, interleaving, processing such as physical Chiyane lambda & Only freshly performed.

The spreading modulation unit 2, to spread the signal after channel coding with a predetermined code. In DZA 3, it converts the signals after spreading modulation to the analog baseband signal. In FIL 4, subjected to waveform shaping with respect to the analog baseband signal. The U / C 5, and converts the signal after waveform shaping to a radio frequency. Then, the HPA 6, performs signal amplification processing on the converted signal to the radio frequency, the amplified signal is transmitted from the antenna 7 to the base station as an uplink signal.

On the other hand, the downlink signal from the base station is received by the antenna 7, the L NA 8, performs low noise amplification processing to the received signal. In DZC 9, performs frequency conversion to a baseband signal from a radio frequency. In FIL 1 0, performs noise removal processing of the signal after frequency conversion. Then, to convert the A / D 1 1, an analog baseband signal after the noise removal to a digital signal.

Since the signal after A / D conversion has a code-multiplexed I inhibit signals, despreading section 1 2, 1 3, it performs despreading processing on the signal after AZD conversion, signal of the desired channel It is extracted. In the despreading section 1 2 extracts a signal of a dedicated pilot channel by despreading, and supplies the signal to the amplitude estimation unit 1 4 and the phase estimating section 1 5, the despreading unit 1 3, packet by despreading extracting a channel signal, and supplies the signal to the position phase compensator 1 6.

The amplitude estimation unit 1 4 measures the signal power of the dedicated pilot channel despread values ​​required to determine 1 6 Q AM demapping threshold (amplitude reference) based on the measurement result the seek. FIGS. 2 and 3 is a diagram showing a Demabbingu processing in the demapping section 17 to be described later. To extract the original 4-bit signal by Demabbingu process, as shown in FIG. 2, the threshold value A, B, C, D, E, F are required. For example, when the zero DC offset of the signal, the threshold E Q-0, the threshold value B is I = 0, and the further threshold F is Q = + th, the threshold D is Q = - th, the threshold a is 1 = singlet th, threshold C is I = th. Therefore, by obtaining the value th, it can be carried out de-mapping.

The amplitude estimation unit 14, if the normalized power of the signal was X, obtaining the value th based on the (gamma) expression. th ^^ = * X ■■ · (1)

Vio

Here, would determine the threshold A, C, D, F by substituting P HS _ DSCH determined using the following equation (2) in X.

PF Λ n (^ HS ~ DSCH -EclIor,.

DPILOT- Ec! Te Iori ^)

However, P HS - in DSCH (Te k) is Tokiirite k (k = l, 2, 3, ■■ ·, N) represents a packet channel power in, P DPILOT (k Te) is Te time k represents a separate pilot channel power, "HS- DSCH- E c" / I or represents a power distribution of the packet channel, "DP I LOT- E c" / I or (Te k) at time i: put the k that represents the power distribution of the dedicated pilot channels. As an example, power distribution "HS- D SCH- E c" Bruno I or 50% fixed, power distribution FDP I LOT- E cJ / Zl or a (k Te) and 5% variable, a dedicated pilot Channel time Te k measurements directly obtained P HS _ DSCH (τ J from. dedicated for pilot channel is a channel in which the power control is applied, the power distribution with the given time tau k of the measurement of the power "DPI LOT-E cj / \ it is necessary to set the time of or. in the present embodiment, for example other, by higher layer signaling to transmit the power distribution "DP I LOT- E c" / I or and the time information tau k. amplitude estimation unit in 1 4, supplies to Demabbingu unit 1 7 value th determined as described above.

Moreover, the phase estimation section 1 5, obtains the phase rotation amount by using the dedicated pilot signal portion of the despread and the known signal. For downlink signals to dedicated pilot channel and Baketsutochi Yaneru are multiplexed I arsenide, the phase rotation amount of the dedicated pilot signal is equal to the phase rotation amount of the packet channel. Therefore, as described above we can estimate the phase rotation amount.

The phase compensator 1 6 receives a signal of the packet channel after despreading, using a phase rotation amount estimated by the phase estimation tough 1 5 e X p (j Θ), against the received signal that It corresponds to the complex conjugate e X ρ (-} Θ) multiplying. This makes it possible to compensate for transmission RF unit content, space, a phase rotation which is added at the receiving RF portion.

The demapping unit 1 7, i shown in FIG. 2, converts the signal after the phase compensation based on the 4-bit signal based on the q signals. Specifically, the demapping unit 1 7, by performing the 1 6 Q AM demapping using the value th of amplitude estimation unit 1 4 outputs, 4-bit data Demabbingu input symbol data (IQ signal) (the It converted to the corresponding) to the 3 Figure b (n). In practice, output as soft decision data of N bits instead of hard decision of 1 bit (since the person can maximize coding gain). In the channel decoding unit 1 8, the physical channel hoax V Bing, Dinther reeving, rate de-matching, decoding, etc. perform CRC checking, providing the transport block to the upper layer as a result. The upper layer, for example, equal to output a WE B information on a screen, providing services for a user. Here, although describing the packet channel as a code may be a multicore one de. Each despreader, a phase compensator has been described a combination of demapping section as one is not limited to this, if having the configuration in which R ake synthesis, as it arranging a plurality of the combination good. The reception Daipashichi, MI MO (Multiple Input Multiple Output), may be combined with an interference canceller. Thus, in this embodiment, performs amplitude estimation corresponding to multi-level modulation, the quality due to a configuration for obtaining the amplitude reference using separate pie opening Ttochaneru which transmission power control is performed, even cell boundary a decrease in can be prevented.

Then, in the second embodiment, in addition to the operation of the first embodiment described above, the further, in order to interpolate the information in the amplitude estimation unit, using the TP C (transmission power control) command uplink .

4 is a diagram showing the configuration of a second embodiment of a mobile station apparatus according to the present invention. The In FIG. 4, 14 a is the amplitude estimating unit for determining the threshold for de-mapping the different way the above-mentioned first embodiment, 2 UiTPC a physical channel map Bing section for Mabbingu (transmission power control) command There, 22 is a SIR estimation unit for estimating signal power to interference power ratio (SIR), 23 is the command generating unit for generating a T PC command, 24 is an adder, 25 is a determiner . The same components as in the first embodiment describes above, is omitted the description thereof are denoted by the same reference numerals. Here, the description only the operation different from the first embodiment.

In this embodiment, SIR estimator 22, the command generating unit 23, by adding a physical Chaneruma Bbingu unit 21, to allow the downlink transmission power control of individual pie opening Ttochaneru. Then, the output of the command generator 23, input to the amplitude estimator 14 a.

First, and supplies the despreading unit 12, a signal of the dedicated pilot channel despread amplitude estimation unit 14 a, the phase estimation section 1 5, SIR estimator 22. The SIR estimating unit 2 2, based on a signal dedicated pilot channel despread you estimate SIR. Estimation of the SIR is to S a (Signal) and the average value of the signal power, the standard deviation of the signal power of I (Interference), can be realized in a known estimation method. Output SIR EST of the SIR estimator 2 2 are supplied to a command generation unit 23.

The command generating unit 23, an adder 24, by using the SIR ta rge t is SIR est and SIR target value of the SIR estimator 22 outputs, SIR est - SIR ta the r ge t to calculate. Then, it is determined decider 25 forces the calculation result, and outputs the TPC command. In the physical channel mapping unit 2 1, to Matsupi packaging the TPC commands received.

The amplitude estimation unit 14 a, the same manner as described above, but finding the value th based on the equation (1) Here, P HS ~ DSCH determined using the following equation (3) are substituted into X sill value a, C, D, and F determined (see Figure 2).

HP /, * HS - DSCH - *, Ec or.

FHS- DSC V k) - PDPILOT Te k) *> TP i · '· (i)

DPILOT-Ec / Ior (k) arm

Incidentally, ShigumaTPCi represents the accumulation of TPC commands generator 23 outputs command. In this case, first, set the power allocation "DP IL_〇_T- E cj / I time or is transmitted to the i = 0, then updates the i in one slot (T PC command cycle) basis. Then, in the next power allocation "time hand that received the DP I LOT- E cj / \ or return the accumulation to zero.

Thus, in this embodiment, a downlink TP C command amplitude estimation processing, since a configuration to interpolate the information in the amplitude estimation unit in TPC command cycle, it is possible to realize a more accurate amplitude estimation process.

Then, in the third embodiment, the amplitude reference is obtained by using an individual pilot channel or common Roh I port Ttochaneru.

5 is a view showing the configuration of a third embodiment of the mobile station apparatus according to the present invention. In Figure 5, 3 1 is a despreading unit., 32 is an amplitude estimating unit, 33 is a phase compensation unit, 34 is a comparator unit, 35, 36 is a selector. The same components as in the first embodiment describes above, is omitted the description thereof are denoted by the same reference numerals. Here, the description only the operation different from the first embodiment.

First, since the signal after AZD converted by AZD 1 1 has a code-multiplexed I inhibit signals, despreading section 1 2, 1 3, 3 1, the despreading processing on the signal after AZD conversion performed, it extracts a signal of a desired channel. In the despreading section 1 2 extracts a signal of a dedicated pilot channel by despreading, and supplies the signal to the amplitude estimator 14 Oyo Pi phase estimating section 1 5, despreading section 1 3, the despreading It extracts a signal of a bucket bets channel, and supplies the signal to the phase compensator 1 6. Then, the despreading unit 3 1, extracts a signal of common pilot channel by despreading, and supplies the signal to the amplitude estimation tough 3 2 and the phase estimator 3 3.

The amplitude estimation unit 3 2, similar to the conventional known method, i.e., by using a common pilot channel despread, obtains a value necessary in order to determine the 1 6 Q AM demapping threshold . Further, even in the phase estimating section 3 3, in a known manner, i.e., determining the phase rotation amount by using the common pi port Tsu DOO signal portion of the despread and the known signal. The comparator 3 4 compares the output of the amplitude estimator 1 4 and the output of the amplitude estimation unit 3 2, to indicate whether to use the value estimated in either channel phase compensation processing Ya Dematsubingu process. 6 is a diagram showing an example of a criterion order to determine whether to use the value estimated in either channel. For example, if the base station apparatus the mobile station apparatus is relatively the near, and instructed to use a value estimated by the common pilot channel power fixed, 'if the mobile station apparatus in the vicinity of the cell boundary, transmission power control value estimated by the individual pie opening Ttochaneru performed is instructed to use.

Then, the selecting section 35, 3 6, according to an instruction from the comparator 3 4 selectively outputs the estimated value of any one channel.

Thus, in the present embodiment, according to the distance of the base station apparatus and the mobile station apparatus, selects an amplitude reference estimated using the common pilot Chiya, channel and amplitude reference estimated using the dedicated pilot channel It was configured to. This realizes a more accurate amplitude estimation process.

The switching process of each selector in the present embodiment is performed by connexion to the magnitude of the power levels, for example, it may be less frequent changing outright a hysteresis in the switching process. As an example of implementation, for example, prior to the comparison process, previously subtracted margin α from the current non-selected one amplitude estimator output. Thus, the currently selected have not one amplitude estimator output of the mer: only will be selected when has decreased more than just down α min the other.

Next, in the fourth embodiment, in addition to the operation of the third embodiment described above, the further, in order to interpolate the information in the amplitude estimation unit, using the TP C (transmission power control) command uplink .

7 is a diagram showing the configuration of a fourth embodiment of a mobile station apparatus according to the present invention. The same components as Embodiment 1, 2, 3 embodiment described above, description thereof is omitted are denoted by the same reference numerals. Here, we describe only the operation different from the third embodiment.

First, the inverse spreading section 12, the signal of the dedicated pilot channel despread amplitude estimation unit 14 a, the phase estimator 15, SIR estimator 22 I this supply. The SIR estimating unit 2 2, based on a signal dedicated pilot channel despread you estimate SIR. Estimation of the SIR is to S a (Signal) and the average value of the signal power, the standard deviation of the signal power of I (Interference), can be realized in a known estimation method. Output SIR EST of the SIR estimator 2 2 are supplied to a command generation unit 23.

The command generating unit 23, by using the SIR Targe t is SIR est and SIR target value of the adder 24 force SIR estimator 22 outputs, SIR es t - a is calculated SIR ta rge t. Then, it is determined decider 25 forces the calculation result, and outputs the TPC command. In the physical channel mapping unit 21, to Matsupi packaging the TPC commands received. ■ The amplitude estimation unit 14 a, the same manner as described above, by substituting (1) obtaining a value th based on the expression, this Kodewa, the P HS _ DSCH determined using the above equation (3) to X sill value a, C, D, and F determined (see Figure 2). In this case, first, set the time of power distribution "DP IL_〇_T one Ec" / lor is transmitted to the i = 0, then updates the i in one slot (T PC command cycle) basis. Then, return the accumulation to zero at the time the hand that received the following power distribution "DP I LO T- E c" / I 0 r.

Thus, in this embodiment, depending on the distance of the base station apparatus and the mobile station apparatus, selects an amplitude reference that is estimated have use the amplitude reference estimated using the individual-specific pie port Ttochaneru common pi port Ttochaneru a configuration in which, further, using a downlink TPC command to the amplitude estimation process, it was decided to add a process of interpolating the information in the amplitude estimation unit in TPC command cycle. This realizes a more accurate amplitude estimation process. Above, in the first to fourth embodiments, the time at that time and power distribution of the individual pilot channel, has been notified by higher layer signaling. In the fifth embodiment, the time to acquire the CFN (Connection Frame Number) synchronization.

For example, as a way to correct the switching timing of the base station apparatus and the mobile station apparatus, there is a method referred to as "C FN switching". The "F r ame N umb er" in C FN F r ame (1 Oms) to 0: a function of counting to 1023. The CFN switching, the base station apparatus, transmits the information of the timing of switching the C FN. Then, the mobile station apparatus, to reflect the switch when the match C FN guard. In this way, one to Itasa the switching timing of the base station apparatus and the mobile station apparatus.

Figure 8 is using synchronous CFN, a diagram showing a state of reception of the power distribution of the individual pilot channel, 41 is a base station apparatus, 42, of embodiments 1-4 Neu Zureka one a mobile station apparatus provided with an amplitude estimator. In this embodiment, the mobile station device 42 receives more higher layer signaling power distribution of the dedicated pilot channel. Also, information on the time at that time, it recognized by CFN synchronization. Then, based on information about the power distribution and the time of the dedicated pilot channel received, it performs amplitude estimation processing according to the method of any one of the first to fourth embodiments.

Thus, in the present embodiment, without using the upper layer signaling

, Because a time synchronization by CFN synchronization can better achieve the signaling processing power allocation.

Then, in the sixth embodiment, the dedicated pilot channel is added to the transmission power control is a channel to be performed, further, by utilizing the fact that a channel capable of channels and diversity handover from another cell, diver performing amplitude estimation processing using the individual pie port Ttochaneru after the first cytidine synthesis. Thus, it is possible to improve the reliability of the amplitude value determined by the individual pie port Tsu bets. 9 is a diagram showing the configuration of a sixth embodiment of a mobile station apparatus according to the present invention. In FIG. 9, 5 1, 5 2 are despreading unit, 5 3 is a synthetic unit, 5 4 is the complement Tadashibu. The same components as in the first embodiment described earlier and will not be 1¾ bright denoted by the same reference numerals. Here, description only about the operation that is different from that of the third embodiment.

First, the despreading unit 1 2, 5 1, 5 2, by despreading, extracting 偶別 pie opening Ttochaneru assigned individually, supply the signal of an individual pie port Ttochaneru despread the synthesizer 5 3 to. -

In the combining unit 5 3, and supplies a signal of an individual pie port Ttochaneru despread form Daipashichi case, the signal of the dedicated pilot channel after synthesis, amplitude estimation unit 1-4, the phase estimation section 1 5.

In this embodiment, in order to use the output of the amplitude estimator 1 4 as the amplitude reference, it is necessary to convert the amplitude estimation unit 1 4 output by the correction unit 5 4 the amplitude value of the own station. Thus, in the present embodiment performs diversity combining by adding dedicated pilot channels of neighboring cells, and configured to obtain an amplitude criteria based on dedicated pilot channels after diversity combining. Thus, it is possible to greatly improve the reliability of the amplitude reference determined using individual pie opening Ttochaneru.

Incidentally, it is possible even when the configuration of the present embodiment is adapted to form 1, 2, 4 embodiment described above to obtain a similar effect. Further, in the present embodiment, an example of three divers cytidine handover, not limited. Industrial Applicability

As described above, the mobile station apparatus according to the present invention are useful for a mobile communication system for forming a cell while no gap and overlap, particularly, to a mobile communication system employing the W- C DMA method Are suitable.

Claims

The scope of the claims
1. Using a predetermined threshold value (amplitude reference), the mobile station apparatus having Demabbingu means, for performing de-Matsubingu processing on the signal of the packet channel is the dedicated pilot channel at the target channel transmission power control signal and a power distribution of each channel given by the upper-les I Ja signaling, with individual pie port Tsu preparative amplitude reference determining means for determining the amplitude reference for performing hoax Bbingu process,
Mobile station apparatus comprising: a.
2. The individual pie port Ttochiyanenore is characterized in that match because the a channel is applied transmission power control, and the time of measurement of the power, and a time of power distribution of the given dedicated pilot channel mobile station apparatus according to claim 1, wherein
3. In addition,
And SIR estimation means for estimating signal power to interference power ratio (SIR) using the signal of the dedicated pilot channel,
A TPC command generation means for generating a transmit power control (TPC) commands based on the defined target SIR in advance with the estimated SIR,
Equipped with a,
The individual pie port Tsu preparative amplitude reference determining means, at the time of power distribution of the given individual pie port Ttochiya panel, according to claim second preceding claims, characterized in that interpolating the amplitude reference at TPC command cycle the mobile station apparatus of.
4. In addition,
Using the signal of the common pilot channel power fixed, and the common pi port Tsu preparative amplitude reference determining means for determining the amplitude reference for performing demapping processing,
Depending on the distance between the base station apparatus, and a comparison / selection means for selecting one of the two amplitude reference,
Mobile station apparatus according to claim 1, characterized in that it comprises a.
5. The individual pie port Ttochaneru is characterized in that match because the a channel is applied transmission power control, and the time of measurement of the power, and a time of power distribution of the given dedicated pilot channel mobile station apparatus according to claim 4
6. The selection process mobile station apparatus according to claim 4, characterized 'in that a hysteresis to.
7. In addition,
And SIR estimation means for estimating signal power to interference power ratio (SIR) using the signal of the dedicated pilot channel,
A TPC command generation means for generating a transmit power control (TPC) commands based on the defined target SIR in advance with the estimated SIR,
Equipped with a,
The individual pie port Tsu preparative amplitude reference determining means, at the time of power distribution of the given individual pie port Ttochiya panel, according to claim 5 wherein claims, characterized in that interpolating the amplitude reference at TPC command cycle the mobile station apparatus of.
8. The mobile station apparatus according to claim 7, characterized in that a hysteresis to the selection process.
9. Further, row 0 synthesizing means diversity combining by adding individual pie port Ttochaneru neighboring cells,
Equipped with a,
The individual pie port Tsu preparative amplitude reference determining means, features and signals the individual pie port Ttochaneru after synthesis, using, and power distribution of each channel, to determine the amplitude reference for performing demapping to mobile station apparatus according to one any range of the items 1 to 8 of claims.
In 1 0. Amplitude reference determining method of the predetermined threshold the mobile station apparatus which performs demapping processing on the signal of the bucket 'DOO channel using (amplitude reference),
A signal dedicated pilot channel is a target channel of the transmission power control, higher-les I Ja and power allocation of each channel given by signaling, is used to determine the amplitude reference for performing hoax Bbingu processing individual pie port amplitude reference determining method characterized by comprising the Tsu preparative amplitude reference determined.
In 1 1. Amplitude reference determining method of the predetermined threshold the mobile station apparatus which performs de Mabbingu processing on the signal of the packet channel using the (amplitude reference),
And SIR estimation step of estimating signal power to interference power ratio (SIR) using the signals of the individual pie port Ttochaneru a target channel of the transmission power control,
A TPC command generation step of generating a transmit power control (TPC) commands based on the defined target SIR in advance with the estimated SIR,
It performs the signal of the individual pie port Ttochaneru, the power distribution of the dedicated pilot channel of the time when the power distribution and power were measured bucket bets channel provided by higher layer signaling, and the TPC command, by using the demapping amplitude reference determining method characterized by comprising, an individual pie port Tsu preparative amplitude reference determining step of determining the amplitude reference for.
In 1 2. Amplitude reference determining method of the predetermined threshold the mobile station apparatus which performs de Mabbingu processing on the signal of the packet channel using the (amplitude reference),
A signal dedicated pilot channel is a target channel of the transmission power control, higher-les I Ja and power allocation of each channel given by signaling, is used to determine the amplitude reference for performing hoax Bbingu processing individual pie port using the signal of the common pilot channel of Tsu preparative amplitude reference determining power fixed, and the common pi port Tsu preparative amplitude reference determining step of determining the amplitude reference for performing demapping processing, depending on the distance between the base station apparatus a comparison / selection step of selecting either one of the two amplitude reference,
Amplitude reference determining method, which comprises a. '
1 3. Predetermined threshold the mobile station apparatus that performs de-Mabbingu processing on the signal of the packet channel using the (amplitude reference) amplitude reference determining method Niore Te,
And SIR estimation step of estimating signal power to interference power ratio (SIR) using the signals of the individual pie port Ttochaneru a target channel of the transmission power control,
A TPC command generation step of generating a transmit power control (TPC) commands based on the defined target SIR in advance with the estimated SIR,
By using the signal of the individual pie port Ttochaneru, the power distribution of the dedicated pilot channel of the time when the power distribution Contact Yopi power measured bucket bets channel provided by higher layer signaling, and a the TPC commands, demapping the individual pie port Tsu preparative amplitude reference determining step of determining the amplitude reference for performing, using the signal of the common pie port Ttochaneru power fixed, common pi port determines the amplitude reference for performing Dematsubingu process Tsu and preparative amplitude reference determining step, in accordance with the distance between the-base station apparatus, a comparison Roh selection step of selecting either one of the two amplitude reference,
Amplitude reference determining method, which comprises a.
1 4. Since the dedicated pilot channel is a channel that is applied transmission power control, and wherein the time of measuring the power, and the time of power distribution of the given dedicated pilot channels, to match the amplitude reference determining method according to one or have shifted range of the first 0 through Section first 3 of claims.
1 5. In addition, synthetic step of Daipashichi synthesized by adding individual pie port Ttochaneru neighboring cells,
It includes,
Wherein in the individual pie opening Tsu preparative amplitude reference determining step, the amplitude reference determining method according to the first item 4 claims, characterized by using the dedicated pilot Channel after synthesis.
PCT/JP2002/006600 2002-06-28 2002-06-28 Mobile station apparatus and amplitude reference decision method WO2004004163A1 (en)

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JP2010541463A (en) * 2007-10-17 2010-12-24 エルジー エレクトロニクス インコーポレイティド cs service providing method using the Hsdpa or hsupa
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006135037A1 (en) * 2005-06-17 2006-12-21 Nec Corporation Communication control method, communication control system and control program thereof
US8238957B2 (en) 2005-06-17 2012-08-07 Nec Corporation Communication control method, communication control system and its control program
US8768383B2 (en) 2007-09-13 2014-07-01 Lg Electronics Inc. Method for providing control information using the paging procedure
US8320918B2 (en) 2007-09-28 2012-11-27 Lg Electronics Inc. Method for reselecting a cell and detecting whether a terminal is stationary in mobile telecommunications system
US8432811B2 (en) 2007-09-28 2013-04-30 Lg Electronics Inc. Method of performing uplink time alignment in wireless communication system
US8619760B2 (en) 2007-10-17 2013-12-31 Lg Electronics Inc. Method of providing circuit switched (SC) service using high-speed downlink packet access (HSDPA) or high-speed uplink packet access (HSUPA)
JP2010541463A (en) * 2007-10-17 2010-12-24 エルジー エレクトロニクス インコーポレイティド cs service providing method using the Hsdpa or hsupa
US8670377B2 (en) 2008-01-04 2014-03-11 Lg Electronics Inc. HARQ operation method for retransmitted data
US9066290B2 (en) 2008-01-07 2015-06-23 Lg Electronics Inc. Method for reconfiguring time alignment timer

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