JP2012039515A - Receiver and reception method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce false detection of a UCI (Uplink Control Information) bit.SOLUTION: A noise power estimation part 124 uses an input reference signal and a channel estimation value to estimate a noise power value caused by thermal noises or interference in a propagation path. A reliability information generation part 125 uses a synthesis code bit signal, a synthesis repetition placeholder bit signal, a synthesis placeholder bit signal, and the noise power value to generate reliability information which shows the transmission of a UCI signal is valid or invalid. A detection processing part 126 refers to the reliability information, and detects the UCI bit when the transmission of the UCI signal is valid, and does not detect the UCI bit when the transmission of the UCI signal is invalid.

Description

  The present invention relates to a receiving device, a receiving method, and a program.

  An E-UTRA (Evolved Universal Terrestrial Radio Access) communication system has been proposed. In the E-UTRA communication system, UCI (Uplink Control Information) such as ACK (Acknowledgement) or RI (Rank Indication) is detected.

  With reference to FIG. 6, a configuration of a receiver and a UCI detection method in a conventional E-UTRA communication system will be described.

  FIG. 6 shows the case where there is one transmitter 500 and one receiver 501, but there are actually a plurality of transmitters 500.

  The transmitter 500 transmits a transmission signal obtained by multiplexing the UCI signal and the reference signal to the receiver 501.

  The receiver 501 includes an equalization processing unit 521, a De-scramble unit 522, an Inverse Rate Match unit 523, and a detection processing unit 524.

  The equalization processing unit 521 receives a transmission signal obtained by multiplexing the UCI signal and the reference signal from the transmitter 500. In the equalization processing unit 521, the UCI demodulated signal is corrected by correcting the amplitude and phase of the UCI signal multiplexed on the input transmission signal using the reference signal multiplexed on the input transmission signal. Is generated. The generated UCI demodulated signal is output to De-scramble section 522.

  A UCI demodulated signal is input from the equalization processing unit 521 to the De-scramble unit 522. In the De-scramble unit 522, the input UCI demodulated signal is subjected to a process corresponding to the reverse of the scramble process of the transmitter 500, whereby the UCI demodulated signal is converted into an encoded bit signal and a repetition placeholder bit. Signal and placeholder bit signal. Here, since the encoded bit signal and the repetition placeholder bit signal are signals obtained by encoding the UCI bit on the transmitter 500 side, they can be used for the UCI bit detection process. On the other hand, the placeholder bit signal is a signal to which the integer value 1 is fixedly given on the transmitter 500 side, and thus is not used for the UCI bit detection process. Therefore, the generated encoded bit signal and repetition placeholder bit signal are output to Inverse Rate Match section 523.

  The Inverse Rate Match unit 523 receives the encoded bit signal and the repetition placeholder bit signal from the De-scramble unit 522. Here, in the Rate Match process of the transmitter 500, the encoded bit signal and the repetition placeholder bit signal are repeated an arbitrary number of times. Therefore, the Inverse Rate Match unit 523 adds the encoded bit signal and the repetition placeholder bit signal over an arbitrary number of repetitions, thereby generating a combined encoded bit signal and a combined repetition placeholder bit signal. The generated combined encoded bit signal and combined repetition placeholder bit signal are output to the detection processing unit 524.

  The detection processing unit 524 receives the composite encoded bit signal and the composite repetition placeholder bit signal from the inverse rate match unit 523. In the detection processing unit 524, UCI bits are detected by using the input combined encoded bit signal and combined repetition placeholder bit signal.

  Conventionally, the base station apparatus includes a transmission unit that transmits the first shared channel in the downlink, and a reception unit that receives the acknowledgment information of the first shared channel and the second shared channel in the uplink. And means for extracting and decoding the second shared channel mapped outside the bit area for delivery confirmation information, and whether or not the delivery confirmation information is included in the uplink signal received after transmission of the first shared channel There is also a determination means for determining whether or not the determination means is based on the received signal quality of the signal portion in which the acknowledgment information may be included in the uplink signal (see, for example, Patent Document 1).

JP 2008-289114 A

  However, in the conventional E-UTRA communication system, when the UCI signal is not transmitted from the transmitter, the detection process is performed assuming that the UCI signal is transmitted in the detection process of the receiver. Detection may occur.

  Also, in the conventional E-UTRA communication system, when the UCI signal is transmitted from the transmitter but the reception quality of the UCI signal is poor, the UCI signal is transmitted from the transmitter, and the reception quality of the UCI signal Is bad, there is a high possibility that an erroneous UCI bit is obtained as a detection result in the detection process of the receiver.

  Therefore, the present invention solves the above-mentioned problem, that is, reduces the erroneous detection of UCI bits, in other words, prevents the erroneous detection of UCI bits and can obtain the correct UCI bits more reliably. And a receiving method and a program.

  In order to solve the above-mentioned problem, a first aspect of a receiving apparatus of the present invention is a receiving apparatus that constitutes an E-UTRA communication system together with a transmitting apparatus, and detects a valid or invalid transmission of a UCI signal It is supposed to have.

  According to the first aspect of the receiving apparatus of the present invention, in addition to the above-described configuration, the detecting means detects whether the transmission of the UCI signal is valid or invalid using a variable threshold.

  Furthermore, the first aspect of the receiving apparatus of the present invention is a bit signal provided as a fixed value to the encoded output by the detecting means without depending on the UCI bit pattern in the transmitting apparatus in addition to the above-described configuration. Is used to detect the validity or invalidity of the transmission of the UCI signal.

  Furthermore, the first aspect of the receiving apparatus of the present invention is the bit that is provided as a fixed value to the encoded output by the detecting means without depending on the UCI bit pattern in the transmitting apparatus in addition to the above-described configuration. The signal is used to detect whether UCI signal transmission is valid or invalid, and the UCI bit is detected without using a bit signal given as a fixed value.

  Also, a first aspect of the reception method of the present invention is a reception method for a reception apparatus that constitutes an E-UTRA communication system together with the transmission apparatus, and includes a step of detecting validity or invalidity of transmission of a UCI signal. Has been.

  Furthermore, the first aspect of the program of the present invention is to cause a computer of a receiving apparatus that constitutes an E-UTRA communication system together with a transmitting apparatus to perform processing including a step of detecting validity or invalidity of UCI signal transmission. Has been.

  In order to solve the above-mentioned problem, a second aspect of the receiving apparatus of the present invention is a receiving apparatus that constitutes an E-UTRA communication system together with a transmitting apparatus, and shows that transmission of a UCI signal is valid or invalid With reference to the information, a UCI bit is detected when the transmission of the UCI signal is valid, and a detection unit that does not detect the UCI bit when the transmission of the UCI signal is invalid is provided.

  The second aspect of the reception method of the present invention is a reception method of a reception apparatus that constitutes an E-UTRA communication system together with the transmission apparatus, and refers to information indicating that transmission of a UCI signal is valid or invalid When UCI signal transmission is valid, the UCI bit is detected, and when UCI signal transmission is invalid, the UCI bit is not detected.

  Furthermore, the second aspect of the program of the present invention refers to the information indicating that the transmission of the UCI signal is valid or invalid to the computer of the receiving apparatus that constitutes the E-UTRA communication system together with the transmitting apparatus. When the signal transmission is valid, the UCI bit is detected. When the UCI signal transmission is invalid, the process including the step of not detecting the UCI bit is performed.

  In order to solve the above-mentioned problem, a third aspect of the receiving apparatus of the present invention is a receiving apparatus that constitutes an E-UTRA communication system together with a transmitting apparatus, and detects the validity or invalidity of UCI signal transmission. And a second detection unit that detects the UCI bit when the transmission of the UCI signal is valid and detects the UCI bit when the transmission of the UCI signal is invalid.

  A third aspect of the reception method of the present invention is a reception method for a reception apparatus that constitutes an E-UTRA communication system together with the transmission apparatus, and includes a first detection step for detecting whether the transmission of UCI signals is valid or invalid. And a second detection step of detecting a UCI bit when the transmission of the UCI signal is valid and detecting no UCI bit when the transmission of the UCI signal is invalid.

  Furthermore, a third aspect of the program of the present invention includes a first detection step for detecting whether the transmission of the UCI signal is valid or invalid in the computer of the receiving apparatus that constitutes the E-UTRA communication system together with the transmitting apparatus, and the UCI signal. The UCI bit is detected when the transmission is valid, and the second detection step in which the UCI bit is not detected is performed when the UCI signal transmission is invalid.

  According to the first to third aspects of the present invention, it is possible to provide a receiving apparatus, a receiving method, and a program that can reduce erroneous detection of UCI bits.

It is a block diagram which shows the structure of the receiver for reception of UCI in the E-UTRA communication system of one Embodiment of this invention. 3 is a block diagram illustrating an example of a configuration of a reliability information generation unit 125. FIG. It is a flowchart which shows the process of reception. It is a flowchart which shows the production | generation process of reliability information. It is a block diagram which shows the structural example of the hardware of a computer. It is a block diagram which shows the structure of the receiver in the conventional E-UTRA communication system.

  Hereinafter, an E-UTRA communication system according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a block diagram showing a configuration of a receiver for UCI reception in an E-UTRA communication system according to an embodiment of the present invention. The E-UTRA communication system shown in FIG. 1 includes one transmitter 100 and one receiver 101. In the following description, processing in the receiver 101 in the E-UTRA communication system when there is one transmitter 100 and one receiver 101 as an example will be described. The receiver 101 is an example of a receiving device.

  In the UCI reception process in the E-UTRA communication system, reliability information about the UCI signal is generated using the encoded bit signal, the repetition placeholder bit signal, and the placeholder bit signal prior to the detection process. Is referenced.

  The transmitter 100 transmits a transmission signal in which the UCI signal and the reference signal are multiplexed to the receiver 101.

  The receiver 101 includes an equalization processing unit 121, a De-scramble unit 122, an Inverse Rate Match unit 123, a noise power estimation unit 124, a reliability information generation unit 125, and a detection processing unit 126.

  The equalization processing unit 121 receives a transmission signal obtained by multiplexing the UCI signal and the reference signal from the transmitter 100. The equalization processing unit 121 generates a UCI demodulated signal by correcting the amplitude and phase of the UCI signal multiplexed on the input transmission signal using the reference signal multiplexed on the input transmission signal. To do. The equalization processing unit 121 outputs the generated UCI demodulated signal to the De-scramble unit 122. Also, the equalization processing unit 121 outputs the reference signal multiplexed with the transmission signal and the generated channel estimation value to the noise power estimation unit 124.

  A UCI demodulated signal is input from the equalization processing unit 121 to the De-scramble unit 122. The De-scramble unit 122 performs a process corresponding to the reverse of the scramble process of the transmitter 100 on the input UCI demodulated signal, thereby generating an encoded bit signal, a repetition placeholder bit signal, and a placeholder bit signal. Generate. The De-scramble unit 122 outputs the generated encoded bit signal, repetition placeholder bit signal, and placeholder bit signal to the Inverse Rate Match unit 123.

  The Inverse Rate Match unit 123 receives the encoded bit signal, the repetition placeholder bit signal, and the placeholder bit signal from the De-scramble unit 122. Here, in the rate match process of the transmitter 100, the encoded bit signal, the repetition placeholder bit signal, and the placeholder bit signal are repeated an arbitrary number of times. Correspondingly, the inverse rate match unit 123 of the receiver 101 adds or averages the encoded bit signal, repetition placeholder bit signal, and placeholder bit signal, respectively, over the number of repetitions in the transmitter 100. As a result, a synthesized encoded bit signal, a synthesized repetition placeholder bit signal, and a synthesized placeholder bit signal are generated. The inverse rate match unit 123 outputs the generated synthesized encoded bit signal, synthesized repetition placeholder bit signal, and synthesized placeholder bit signal to the reliability information generating unit 125. Further, the inverse rate match unit 123 outputs the generated combined encoded bit signal and combined repetition placeholder bit signal to the detection processing unit 126.

  The noise power estimation unit 124 receives the reference signal and the channel estimation value from the equalization processing unit 121. The noise power estimation unit 124 estimates a noise power value caused by thermal noise or propagation path interference using the input reference signal and channel estimation value. The noise power estimation unit 124 outputs the estimated noise power value to the reliability information generation unit 125.

  The reliability information generation unit 125 receives the composite encoded bit signal, the composite repetition placeholder bit signal, and the composite placeholder bit signal from the inverse rate match unit 123, and the noise power value from the noise power estimation unit 124. . The reliability information generation unit 125 generates reliability information related to the UCI signal using the input combined encoded bit signal, combined repetition placeholder bit signal, combined placeholder bit signal, and noise power value. The reliability information generation unit 125 outputs the generated reliability information to the detection processing unit 126.

  The detection processing unit 126 receives the composite encoded bit signal and the composite repetition placeholder bit signal from the inverse rate match unit 123, and the reliability information from the reliability information generation unit 125. The detection processing unit 126 is an example of a detection unit. When the reliability information indicates that the transmission of the UCI signal is valid with reference to the input reliability information, the input composite coded bit signal The UCI bit is generated by performing the UCI bit detection process using the combined repetition placeholder bit signal. On the other hand, when the reliability information indicates that the transmission of the UCI signal is invalid with reference to the input reliability information, the detection processing unit 126 does not perform the UCI bit detection process (suppresses the detection process). To do).

  FIG. 2 is a block diagram illustrating an example of the configuration of the reliability information generation unit 125.

  The reliability information generation unit 125 includes a bit synthesis unit 141, a detection threshold calculation unit 142, and a reliability determination unit 143.

  The bit combination unit 141 receives the combined encoded bit signal, the combined repetition placeholder bit signal, and the combined placeholder bit signal from the inverse rate match unit 123. The bit synthesizing unit 141 synthesizes the synthesized encoded bit signal, the synthesized repetition placeholder bit signal, and the synthesized placeholder bit to generate a detection bit signal synthesized value. The bit synthesis unit 141 outputs the generated detection bit signal synthesis value to the reliability determination unit 143.

  A noise power value is input from the noise power estimation unit 124 to the detection threshold calculation unit 142. The detection threshold calculation unit 142 generates a detection threshold using the input noise power value and a relative detection threshold that can be set in advance (stored in advance) as a parameter. The detection threshold calculation unit 142 outputs the generated detection threshold to the reliability determination unit 143.

  The reliability determination unit 143 receives the detection bit signal synthesis value from the bit synthesis unit 141 and the detection threshold value from the detection threshold calculation unit 142. The reliability determination unit 143 generates reliability information by comparing the input detection bit signal composite value with a detection threshold. The reliability determination unit 143 outputs the generated reliability information to the detection processing unit 126. That is, the reliability determination unit 143 is an example of a detection unit, and detects whether the transmission of the UCI signal is valid or invalid.

  As described above, the noise power estimation unit 124 estimates the noise power, the reliability information generation unit 125 generates reliability information about the UCI signal, and the detection processing unit 126 refers to the reliability information about the UCI signal. Detection process.

  FIG. 3 is a flowchart showing reception processing of the receiver 101. Hereinafter, UCI reception processing in the receiver 101 will be described with reference to FIG.

  In step S200, the receiver 101 receives a transmission signal in which the UCI signal transmitted from the transmitter 100 and the reference signal are multiplexed.

  In step S201, the equalization processing unit 121 extracts a reference signal from the received transmission signal. In step S202, the equalization processing unit 121 generates a channel estimation value using the extracted reference signal. In step S203 executed in parallel with step S201 and step S202, the equalization processing unit 121 extracts a UCI signal from the received transmission signal. In step S204, the equalization processing unit 121 performs UCI equalization processing. That is, in step S204, the equalization processing unit 121 generates a UCI demodulated signal by correcting the amplitude and phase using the channel estimation value generated for the extracted UCI signal.

In step S205, the De-scramble unit 122 performs a process corresponding to the reverse of the scramble process of the transmitter 100 on the UCI demodulated signal to generate an encoded bit signal X ₀ , a repetition placeholder bit signal X ₁ , and generating a placeholder bit signal X _2.

・・・（１） In step S206, the inverse rate match unit 123 combines the encoded bit signal X ₀ , the repetition placeholder bit signal X ₁ , and the placeholder bit signal X _{2 according} to equation (1), thereby combining the encoded bit signal X _{RM. , 0} , a combined repetition placeholder bit signal X _{RM, 1} , and a combined placeholder bit signal X _{RM, 2} are generated. Here, the variable i is an integer indicating the bit number of the encoded bit signal X ₀ , the repetition placeholder bit signal X ₁ , and the placeholder bit signal X ₂ . The variable i ′ is an integer indicating the bit number of the composite encoded bit signal X _{RM, 0} , the composite repetition placeholder bit signal X _{RM, 1} , and the composite placeholder bit signal X _{RM, 2} . The variables N _{RM, 0, i ′} , N _{RM, 1, i ′} , and N _{RM, 2, i ′} are the encoded bit signal X ₀ , repetition placeholder bit signal X ₁ , and placeholder bits for the variable i ′, respectively. The number of bit repetitions in the rate match processing of the transmitter 100 related to the signal X ₂ is shown. The variable m is an integer having a value of 0, 1, or 2.

... (1)

In step S207 executed in parallel with step S202 to step S206, the noise power estimation unit 124 estimates the noise power value σ ² using the reference signal and the channel estimation value.

In step S208, the reliability information generation unit 125 generates reliability information. That is, the reliability information generation unit 125 uses the synthesized encoded bit signal X _{RM, 0} , the synthesized repetition placeholder bit signal X _{RM, 1} , and the synthesized placeholder bit signal X _{RM, 2} to detect the bit signal synthesized value X for detection. Calculate _det . In addition, the reliability information generation unit 125 calculates the detection threshold Thr _det using the noise power value σ ² . The reliability information generation unit 125 generates reliability information by comparing the magnitude relationship between the calculated detection bit signal composite value X _det and the detection threshold Thr _det . Here, the reliability information is information indicating that the transmission of the UCI signal is valid or the transmission of the UCI signal is invalid. Details of the process of generating reliability information will be described later.

  In step S209, the detection processing unit 126 refers to the reliability information and determines whether the transmission of the UCI signal is valid or the transmission of the UCI signal is invalid. In step S209, if the reliability information indicates that the transmission of the UCI signal is invalid and it is determined that the transmission of the UCI signal is invalid, the procedure proceeds to step S210, and the detection processing unit 126 The UCI reception process ends without detecting the UCI signal.

On the other hand, in step S209, if the reliability information indicates that the transmission of the UCI signal is valid and it is determined that the transmission of the UCI signal is valid, the procedure proceeds to step S211 and the detection processing unit 126 is performed. Performs a detection process using the composite encoded bit signal X _{RM, 0} and the composite repetition placeholder bit signal X _{RM, 1} .

・・・（２） When performing detection processing of the UCI signal, the detection processing unit 126 combines the combined encoded bit signal X _{RM, 0} and the combined repetition placeholder bit signal X _{RM, 1 according} to Equation (2) to generate the UCI bit combined signal. Generate an X _comb . Here, the variable i ′ ″ is an integer indicating the bit number of the UCI bit composite signal X _comb . The variable N _{rept, 0, i ″ ′} is an integer indicating the number of repetition bits of the composite encoded bit signal X _{RM, 0} related to the bit number i ′ ″. Variable N _{rept, 1, i ''',} the bit number i' is an integer representing the repeating number of bits of the synthesis repetition placeholder bits signal X _{RM, 1} relates ''. The variable i ″ is an integer indicating the bit number of the combined encoded bit signal X _{RM, 0} and the combined repetition placeholder bit signal X _{RM, 1} related to the bit number i ″ ′.

... (2)

・・・（３） In step S212, the detection processing unit 126 generates a codeword signal C having all the assumed bit arrangement patterns of UCI bits transmitted from the transmitter 100. The detection processing unit 126 generates a correlation value X _corr using the UCI bit composite signal X _comb and the code word signal C according to Expression (3).

... (3)

Here, the variable N _BIT is an integer indicating the number of bits of the UCI bit composite signal X _comb . The variable k is an integer indicating the bit array pattern number.

In step S213, detection processing unit 126, the generated correlation values in X _corr, by detecting the arrangement pattern of UCI bits corresponding to the correlation value X _corr having a maximum value as a UCI bits, the reception processing of the UCI ends To do. That is, in step S213, the detection processing unit 126 detects the UCI bit without using a bit signal given as a fixed value.

  FIG. 4 is a flowchart showing a process of generating reliability information by the reliability information generating unit 125 corresponding to step S208.

・・・（４） In step S400, the bit synthesis unit 141 receives (acquires) the synthesized encoded bit signal X _{RM, 0} , the synthesized repetition placeholder bit signal X _{RM, 1} , and the synthesized placeholder bit signal X _{RM, 2} from the inverse rate match unit 123. To do. In step S401, the bit synthesizing unit 141 calculates a detection bit signal synthesized value X _det using Equation (4). Here, the variable N _{rept, 2, i ′ ″} is an integer indicating the number of repetition bits of the combined repetition placeholder bit signal X _{RM, 2} regarding the bit number i ′ ″.

... (4)

・・・（５） In step S402 executed in parallel with step S400 and step S401, the detection threshold value calculation unit 142 calculates a detection threshold value Thr _det that is a variable threshold value using Equation (5) using the noise power σ ² . Here, the variables Thr _{det and rel} are real values capable of setting an arbitrary value indicating the relative detection threshold.

... (5)

In step S403, the reliability determination unit 143 compares the detection bit signal composite value X _det with the detection threshold Thr _det , and generates reliability information in steps S404 and S405. Specifically, when it is determined in step S403 that the detection bit signal composite value X _det is less than the detection threshold Thr _det , in step S404, the reliability determination unit 143 disables transmission of the UCI signal. And the reliability information indicating that the transmission of the UCI signal is invalid is generated, and the process of generating the reliability information ends. On the other hand, when it is determined in step S403 that the bit composite value X _det is equal to or greater than the detection threshold Thr _det , in step S405, the reliability determination unit 143 detects that the transmission of the UCI signal is valid, and the UCI The reliability information indicating that the signal transmission is valid is generated, and the process of generating the reliability information ends.

  In addition, although the case where one transmitter 100 exists as an example has been described, the present invention is not limited thereto, and a plurality of transmitters 100 can be provided.

・・・（６） Further, the detection threshold value calculation unit 142 of the reliability information generator 125, when calculating a detection threshold Thr _det, has been described as using a noise power sigma ^2, calculating the detection threshold Thr _det by the formula (6) Is also possible. Here, the variable β is a real number for which an arbitrary value can be set.

... (6)

  As described above, when the UCI signal is not transmitted from the transmitter 100, the frequency of erroneous detection of the UCI signal in the receiver 101 can be reduced.

  The reason is that when the UCI signal is not transmitted from the transmitter 100, the UCI signal is transmitted by referring to the reliability information in the detection process of the receiver 101, or the UCI signal is not transmitted. Is determined by the receiver 101. This is because the receiver 101 can grasp that the UCI signal is not transmitted.

  Furthermore, when the UCI signal is transmitted from the transmitter 100 and the reception quality of the UCI signal is poor, the frequency of the detection processing for the UCI signal that is frequently detected by the receiver 101 may be reduced. Is possible.

  The reason is that, even when the UCI signal is transmitted from the transmitter 100 and the reception quality of the UCI signal is poor, the reliability information is referred to in the detection process of the receiver 101, so that the received UCI signal This is because the frequency of occurrence of erroneous detection can be grasped.

  As described above, false detection of UCI bits can be reduced, in other words, erroneous detection of UCI bits can be prevented, and correct UCI bits can be obtained more reliably.

  The series of processes described above can be executed by hardware or can be executed by software. When a series of processing is executed by software, a program constituting the software executes various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a program recording medium in a general-purpose personal computer or the like.

  FIG. 5 is a block diagram illustrating an example of a hardware configuration of a computer that executes the above-described series of processes using a program.

  In a computer, a central processing unit (CPU) 201, a read only memory (ROM) 202, and a random access memory (RAM) 203 are connected to each other by a bus 204.

  An input / output interface 205 is further connected to the bus 204. The input / output interface 205 includes an input unit 206 composed of a keyboard, mouse, microphone, etc., an output unit 207 composed of a display, a speaker, etc., a storage unit 208 composed of a hard disk or nonvolatile memory, and a communication unit 209 composed of a network interface. A drive 210 for driving a removable medium 211 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is connected.

  In the computer configured as described above, the CPU 201 loads, for example, the program stored in the storage unit 208 to the RAM 203 via the input / output interface 205 and the bus 204 and executes the program. Is performed.

  The program executed by the computer (CPU 201) is, for example, a magnetic disk (including a flexible disk), an optical disk (CD-ROM (Compact Disc-Read Only Memory), DVD (Digital Versatile Disc), etc.), a magneto-optical disk, or a semiconductor. The program is recorded on a removable medium 211 that is a package medium composed of a memory or the like, or provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.

  The program can be installed in the computer by loading the removable medium 211 in the drive 210 and storing it in the storage unit 208 via the input / output interface 205. Further, the program can be installed in a computer by being received by the communication unit 209 via a wired or wireless transmission medium and stored in the storage unit 208. In addition, the program can be installed in the computer in advance by storing the program in the ROM 202 or the storage unit 208 in advance.

  The program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

  The embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 100 ... Transmitter 101 ... Receiver 121 ... Equalization process part 122 ... De-scramble part 123 ... Inverse Rate Match part 124 ... Noise power estimation part 125 ... Reliability information generation part 126 ... Detection process , 141 ... Bit composition unit, 142 ... Detection threshold value calculation unit, 143 ... Reliability determination unit, 201 ... CPU, 202 ... ROM, 203 ... RAM, 208 ... Storage unit, 209 ... Communication unit, 211 ... Removable media

Claims (12)

In a receiving device that constitutes an E-UTRA communication system together with a transmitting device,
A receiving apparatus comprising: detecting means for detecting validity or invalidity of UCI signal transmission. The receiving device according to claim 1,
The receiving device detects whether the transmission of the UCI signal is valid or invalid by using a variable threshold value. The receiving device according to claim 1,
The detection means detects whether the transmission of the UCI signal is valid or invalid by using a bit signal given as a fixed value to the encoded output without depending on the UCI bit pattern in the transmission device. A receiving device. The receiving device according to claim 1,
The detection means detects whether the transmission of the UCI signal is valid or invalid by using a bit signal given as a fixed value to the encoded output without depending on the UCI bit pattern in the transmission device,
The receiving apparatus, wherein the UCI bit is detected without using a bit signal given as the fixed value. In the receiving method of the receiving device that constitutes the E-UTRA communication system together with the transmitting device,
A receiving method comprising: detecting whether the UCI signal transmission is valid or invalid. In the computer of the receiving device that constitutes the E-UTRA communication system together with the transmitting device,
A program that performs processing including the step of detecting the validity or invalidity of UCI signal transmission. In a receiving device that constitutes an E-UTRA communication system together with a transmitting device,
Referring to information indicating that the transmission of the UCI signal is valid or invalid, the UCI bit is detected when the transmission of the UCI signal is valid, and the UCI bit is set when the transmission of the UCI signal is invalid. A receiving apparatus comprising: a detecting unit that does not detect. In the receiving method of the receiving device that constitutes the E-UTRA communication system together with the transmitting device,
Referring to information indicating that the transmission of the UCI signal is valid or invalid, the UCI bit is detected when the transmission of the UCI signal is valid, and the UCI bit is set when the transmission of the UCI signal is invalid. A receiving method comprising a step of not detecting. In the computer of the receiving device that constitutes the E-UTRA communication system together with the transmitting device,
Referring to information indicating that the transmission of the UCI signal is valid or invalid, the UCI bit is detected when the transmission of the UCI signal is valid, and the UCI bit is set when the transmission of the UCI signal is invalid. A program that performs processing including steps that are not detected. In a receiving device that constitutes an E-UTRA communication system together with a transmitting device,
First detecting means for detecting whether the transmission of the UCI signal is valid or invalid;
And a second detection unit that detects a UCI bit when the transmission of the UCI signal is valid and detects no UCI bit when the transmission of the UCI signal is invalid. In the receiving method of the receiving device that constitutes the E-UTRA communication system together with the transmitting device,
A first detection step of detecting whether the transmission of the UCI signal is valid or invalid;
And a second detection step of detecting a UCI bit when the transmission of the UCI signal is valid and detecting no UCI bit when the transmission of the UCI signal is invalid. In the computer of the receiving device that constitutes the E-UTRA communication system together with the transmitting device,
A first detection step of detecting whether the transmission of the UCI signal is valid or invalid;
A second detection step that detects a UCI bit when the transmission of the UCI signal is valid and detects a UCI bit when the transmission of the UCI signal is invalid.

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