JP4546711B2 - Communication device - Google Patents

Description

The present invention relates to communication equipment, about the suitable communications equipment using the Handover particular switching a plurality of wireless communication systems.

  Currently, so-called second generation wireless communication systems such as PDC and GSM, third generation wireless communication systems such as W-CDMA, and various wireless communication systems such as PHS and wireless LAN (hereinafter referred to as “wireless communication systems”). Exist). As a technique for making these multiple wireless communication systems compatible with one wireless device, there is software wireless that changes its function by rewriting software (programming data).

  The conventional software defined radio apparatus switches between wireless communication systems (refers to handover between wireless communication systems or updating programming data, but here only updating programming data is included in handover) The software for supporting the handover destination communication method is downloaded from the communication method with which the communication device is communicating. And the communication apparatus corresponding to the radio | wireless communication system of a handover destination is constructed | assembled using the downloaded data.

  There is a method of realizing switching of the wireless communication system by reprogramming (reconstructing) a reconfigurable device (see, for example, Patent Document 1). In order to realize high-speed download, it is considered to provide a dedicated channel (see, for example, Patent Document 2).

  Currently, mobile communication terminals are required to switch from a communication method during communication to another communication method at high speed, and at the same time, it is desired to improve the user capacity of the entire system. From this point, in the configuration disclosed in Patent Document 1, a call is interrupted or disconnected during download, and high-speed handover between wireless communication systems cannot be performed. Further, as disclosed in Patent Document 2, if a dedicated channel for downloading programming data is provided, the frequency utilization efficiency may deteriorate, and the user capacity of the entire system may be reduced.

  Also, if you try to download wireless communication system data with a large amount of programming data (hereinafter referred to as “large-scale”) in a wireless communication system with a narrow bandwidth and low transmission rate, it is likely to be retransmitted. Takes a long time to complete. In particular, the occurrence of retransmission is remarkable in a poor radio wave propagation situation.

  Furthermore, if individual mobile communication terminals are operated in a wireless communication system with a wide bandwidth and high transmission rate in order to perform high-speed download, there is a problem that frequency utilization efficiency is poor and the user capacity of the entire system is reduced.

  In addition, when a reconfigurable device such as PLD (Programmable Logic Device) or FPGA (Field Programmable Gate Array) is used for mobile radio baseband signal processing, for example, FFT (Fast Fourier Transform), correlator, FEC (FEC) It can handle any calculation such as Forward Error Correction) and has a high degree of freedom. Also, the development period can be shortened. However, in PLD and FPGA, the circuit scale and power consumption tend to increase.

On the other hand, if a custom ASIC is used for mobile radio baseband signal processing, the circuit scale and power consumption can be reduced because it is a dedicated circuit. For example, FFT can be applied only to FFT and has a low degree of freedom. . Also, the development period takes a long time.
Japanese Patent Laid-Open No. 11-220413 JP 2000-324043 A

  As described above, in the conventional apparatus, when the programming data of the wireless communication method is downloaded to the communication apparatus and the contents of the system are switched to the downloaded programming data, the amount of programming data is large and the download time becomes long. There is a problem that it takes time to switch.

The present invention has been made in view of the above, without reducing the user capacity of the entire system, to reduce the time takes to download, as a result, it provides a communication equipment to switch the communication mode in a short time For the purpose.

A communication apparatus according to the present invention includes a wireless unit that receives a radio signal and converts it into a baseband signal, and a reconfigurator having a plurality of arithmetic units that can be used in common among a plurality of radio communication systems and perform baseband signal processing. Reconfigurable means for reconfiguring the reconfigurable device based on programming data of a new wireless communication system when switching between the figureable device and the wireless communication system, and stopping the clock and power supply of the part not used for the reconstruction And the reconstructing means reconstructs either the connection information or the control information between the arithmetic units that are different among the plurality of wireless communication systems of the baseband signal processing.

  According to this configuration, an arithmetic unit that is an element that can be commonly used in a plurality of wireless communication systems is provided from the beginning, and only connection information and control information between internal arithmetic units are set, and a baseband of a desired system is set. By installing a reconfigurable device that performs a signal processing function, the amount of data to be reconstructed can be reduced, the time required for downloading can be reduced, and the communication method can be switched in a short time.

As described above, according to the communication equipment of the present invention, download programming data of the handover destination radio communication system, a communication device to reconstruct the reconfigurable device using the downloaded data, a plurality of radio Arithmetic units that are elements that can be used in common in the communication system are provided from the beginning, and the circuit scale and the connection information between the internal arithmetic units, the connection information inside the arithmetic units and the control information are downloaded as programming data. Can reduce the amount of programming data and shorten the download time.

  As a result, there is no need to provide a dedicated channel for high-speed downloads or to accommodate a large number of users in a broadband / high transmission rate wireless communication system, thereby avoiding a reduction in the user capacity of the entire system. Can do. In addition, the circuit scale can be reduced.

  The essence of the present invention is that, in a software defined radio device that changes functions by rewriting software that performs signal processing, by reconstructing only the portions that are different among a plurality of radio communication schemes, The amount of data to be reconstructed is reduced, the time required for downloading is reduced, and the communication method is switched in a short time.

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

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a communication apparatus according to Embodiment 1 of the present invention. 1 mainly includes an antenna unit 101, a radio unit 102, a digital signal processing unit 103, a general-purpose bus 104, a CPU 105, a storage unit 106, and an interface 107. The radio unit 102 is mainly composed of a reception unit 121 and a transmission unit 122. The digital signal processing unit 103 includes a reconfigurable device 131, and the reconfigurable device 131 is connected to the general-purpose bus 104 via the CPU bus 132.

  In FIG. 1, a wireless unit 102 includes a reception unit 121 and a transmission unit 122, and performs predetermined wireless processing on the reception signal and the transmission signal.

  The reception unit 121 receives a signal transmitted from a communication partner station (not shown) via the antenna unit 101, and performs predetermined wireless reception processing (down-conversion, A / D conversion, etc.) on the received signal (reception signal). The signal after the radio reception processing is output to the digital signal processing unit 103.

  The digital signal processing unit 103 includes a reconfigurable device 131, and the reconfigurable device 131 constructs a decoding unit 133 and an encoding unit 134 with programming data.

  The decoding unit 133 synchronizes with the signal output from the receiving unit 121, performs demodulation and decoding of the signal, and outputs the decoded signal to the CPU 105 via the CPU bus 132 and the general-purpose bus 104.

  The CPU 105 functions as a control unit, outputs the signal output from the decoding unit 133 to the outside, and outputs transmission data to the encoding unit 134 in the digital signal processing unit 103 described later. In addition, the CPU 105 downloads programming data of another wireless communication method and stores it in the storage unit 106 via the general-purpose bus 104 in order to perform handover for switching to another wireless communication method during communication using a certain wireless communication method. Further, the CPU 105 reads the stored programming data and reconstructs the reconfigurable device 131. Details of this reconstruction will be described later.

  The encoding unit 134 encodes and modulates the transmission data output from the CPU 105, and outputs the modulated signal to the transmission unit 122 in the wireless unit 102. The transmission unit 122 performs predetermined transmission processing (up-conversion, D / A conversion, etc.) on the signal output from the encoding unit 134 and transmits the signal to a communication partner station (not shown) via the antenna unit 101.

  The storage unit 106 stores programming data. The interface 107 inputs and outputs data between the communication device 100 and the outside.

  Wireless communication is performed with the above configuration. In the following, the digital signal processing unit 103 is provided with reconfigurability (reconstruction capability) in the category of baseband signal processing of mobile radio communication, and is a reconfigurable device specialized for mobile radio communication, so that redundant freedom is achieved. An example in which the circuit scale of the digital signal processing unit and the programming data are reduced by eliminating the degree will be described.

  In the communication apparatus of the present invention, an arithmetic unit that is an element that can be commonly used in a plurality of wireless communication systems is provided from the beginning, and only connection information and control information between internal arithmetic units are set, and a base of a desired system is set. By installing a reconfigurable device that performs the band signal processing function, the amount of data to be reconstructed can be reduced, the time required for downloading can be reduced, and the communication method can be switched in a short time.

  For example, in the communication apparatus of the present invention, functions (for example, FFT) that can be used in common even in different wireless communication systems are not equipped with FFT for each wireless communication system, but various functions that realize FFT. The computing unit itself is installed from the beginning.

  Then, the communication device of the present invention can program only the information (control information) for controlling the arithmetic units and the information (connection information) for connecting the arithmetic units from the outside, so that FFT corresponding to a plurality of wireless communication systems can be performed. Is designed so that the circuit scale and the programming data are reduced as much as possible to reduce the amount of data required for reconstruction. The specific contents of the connection information and control information will be described later.

  In the present embodiment, a decoding unit 133 whose circuit scale is generally dominant in baseband signal processing will be described. FIG. 2 is a block diagram showing the configuration of the reconfigurable device of the communication apparatus according to the present embodiment. The reconfigurable device 131 in FIG. 2 mainly includes a synchronization unit 201, a second FFT unit 202, a second correlator 203, an ARQ processing unit 204, a compensation unit 205, and an FEC unit 206.

  The synchronization unit 201 mainly includes a first FFT unit 211, a first correlator 212, a first storage unit 213, and a determination unit 214. In addition, the ARQ processing unit 204 includes a second storage unit 241.

  In FIG. 2, the synchronization unit 201 acquires and follows the synchronization of the wireless communication method, searches for the wireless communication method of the handover destination, and assigns fingers as necessary based on the signal output from the reception unit 121.

  When the OFDM (Orthogonal Frequency Division Multiplex) method is used as the modulation method, the first FFT unit 211 performs fast Fourier transform (hereinafter referred to as FFT) on the received signal, and stores it in the first storage unit 213. Accumulate FFT results. The determination unit 214 searches for a synchronization symbol that is known information while performing a comparison operation on the data stored in the first storage unit 213, acquires symbol synchronization, and transmits the synchronization timing information to the second FFT unit 202. .

  On the other hand, when the CDM (Code Division Multiplex) method is used as the modulation method, the first correlator 212 performs a correlation operation with the known signal sequence on the received signal, and stores it in the first storage unit 213. Accumulate correlation results. The determination unit 214 performs a maximum value / maximum value search on the data stored in the first storage unit 213, acquires frame synchronization and a spreading code number, and obtains the synchronization timing information and the spreading code number from the second correlator 203. To tell.

  In particular, in the situation of a multipath propagation path, some local maximum values appear in the accumulated correlation result (delay profile), so they are called fingers, and the timing information of each finger is also the second correlator. 203 may be transmitted.

  In the case of a scheme in which OFDM or CDM is combined, synchronization is acquired by combining both.

  For example, the first FFT unit 211 executes FFT, accumulates the FFT result in the first storage unit 213, acquires symbol synchronization from the accumulated data by the determination unit 214, and transmits the synchronization timing information to the second FFT unit 202. At the same time, the accumulated data is also input to the first correlator 212, performs correlation calculation with the known signal sequence, and accumulates the correlation result in the first storage unit 213.

  The determination unit 214 performs a maximum value / maximum value search on the accumulated data, acquires frame synchronization and a spreading code number, and transmits the synchronization timing information and the spreading code number to the second correlator 203.

  Even if synchronization is acquired once, especially when the communication device or base station is moving, the radio wave propagation environment changes every moment, and synchronization is lost. Must follow the synchronization.

  In some cases, the handover destination is acquired while maintaining the current communication.

  The second FFT unit 202 performs an FFT operation on the reception channel signal output from the reception unit 121 based on the synchronization timing information output from the synchronization unit 201.

  The second correlator 203 performs a correlation operation on the reception channel signal output from the reception unit 121 or the second FFT unit 202 according to the synchronization timing information and the spreading code number output from the synchronization unit 201. Whether to input from the receiving unit 121 or from the second FFT unit 202 is set as connection information at the time of reconfiguration.

  The compensation unit 205 uses a known signal (pilot signal) for the signal input from the first correlator 212, the second correlator 203, the second FFT unit 202, or the ARQ processing unit 204, An amplitude distortion value is calculated, and using the calculated phase rotation amount and amplitude distortion value, complex correction is performed on the input signal to perform phase correction and amplitude correction.

  Of the first correlator 212, the second correlator 203, the second FFT unit 202, or the ARQ processing unit 204, which signal to process is input is set as connection information at the time of reconfiguration.

In multi-level modulation of 2 ⁿ (n is an integer of 3 or more) values such as 16QAM and 64QAM, for example, a table lookup is used for complex symbol data subjected to phase correction and amplitude correction. Conversion to individual data is also performed. Note that the value of n is set as control information during reconfiguration.

  The FEC unit 206 performs error correction processing such as Viterbi decoding and TURBO decoding on the data input from the compensation unit 205 or the ARQ processing unit 204. In addition, the FEC unit 206 outputs the calculation result to the bit calculation unit 207.

  In some cases, the FEC unit 206 inputs the calculation result of the bit calculation unit 207, and determines whether to repeat the FEC process again. If it is determined that the error could not be corrected as a result of the FEC processing, the ARQ processing unit 204 is instructed to hold the received data. In some cases, the FEC unit 206 outputs data to be held in the ARQ processing unit 204.

  The type of FEC such as Viterbi decoding or TURBO decoding is used as control information, whether it is input from the compensation unit 205 or the ARQ processing unit 204 as connection information, and whether the calculation result from the bit calculation unit 207 is input. As the connection information, other information such as a constraint length value, a generator polynomial, an input data length, and an output data length is set as control information at the time of reconfiguration.

  The ARQ processing unit 204 accumulates the data input from the second correlator 203 or the FEC unit 206 in the second storage unit 241, and determines whether to retain the accumulated data according to the instruction from the FEC unit 206. In the case of holding, the ARQ processing unit 204 outputs the data received in the next frame to the compensation unit 205 or the FEC unit 206.

  Whether to input from the second correlator 203 or the FEC unit 206, or to output from the compensation unit 205 or the FEC unit 206, is set as control information at the time of reconfiguration.

  The bit calculation unit 207 performs error detection processing by CRC calculation on the bit sequence input from the FEC unit 206, descrambling by descrambling processing, or parity by CRC calculation on the bit sequence input from the CPU bus 132. Bit calculation processing such as bit generation, scrambling processing for scrambling data, and error correction code processing such as convolutional code and TURBO code is performed. The content of the calculation is set at the time of reconfiguration as connection information inside the bit calculation unit 207.

  Next, the case where the digital signal processing unit having the above-described configuration is reconfigured according to the wireless communication method will be described with reference to FIGS. 3, 4, and 5. 3, 4, and 5 are block diagrams illustrating the configuration of the reconfigurable device of the communication apparatus according to the present embodiment. FIG. 3 shows a digital signal processing unit constructed by the first wireless communication system. In this figure, reconstruction is performed using only functional blocks indicated by bold lines. Wiring indicated by dotted lines is not connected between functional block diagrams. Therefore, all functions are used in FIG.

  FIG. 4 shows a digital signal processing unit constructed by the second wireless communication system. In this figure, reconstruction is performed using only the devices indicated by bold lines. Therefore, in FIG. 4, since the first correlator 212, the second correlator 203, and the ARQ processing unit 204 are not used, these connections are released, and the supply of the clock and power is stopped.

  FIG. 5 shows a digital signal processing unit constructed by the third wireless communication system. In this figure, reconstruction is performed using only the devices indicated by bold lines. Therefore, in FIG. 5, since the first FFT unit 211 and the second FFT unit 202 are not used, these connections are released, and the supply of the clock and power is stopped.

  As described above, according to the communication apparatus of the present embodiment, only the functional blocks necessary for each wireless communication method are used, the connection of unused functional blocks is released, and the supply of the clock and power is stopped. Thereby, power consumption can be reduced.

  Here, each functional block used in common in different wireless communication systems will be described. For example, when FIG. 3 and FIG. 4 are compared, the first FFT unit 211 and the second FFT unit 202 are used in common. However, the specifications of the number of samples are different even in the same FFT section. Therefore, only a different part of the internal configuration of the FFT is reconfigured by a reconfiguration figure. FIG. 6 is a diagram illustrating an internal configuration of the FFT unit according to the present embodiment.

The first FFT unit 211 and the second FFT unit 202 include a plurality of butterfly computing units shown in FIG. For example, as shown in FIG. 6, a butterfly calculator composed of two multipliers 602 and 604 and two adders 601 and 603 is used as a basic element, and this butterfly calculator is set to N / 2 at the time of FFT at N points. Xlog ₂ Realized by combining N pieces.

As an example, a 4-point FFT and an 8-point FFT will be described. FIG. 7 is a diagram illustrating an example of an internal configuration of the FFT unit at the time of 4-point FFT. The 4-point FFT can be realized by wiring as shown in FIG. 7 using 4 (= 4/2 × log ₂ 4) butterfly computing units.

FIG. 8 is a diagram illustrating an example of the internal configuration of the FFT unit during 8-point FFT. At the time of 8-point FFT, it can be realized by wiring 12 (= 8/2 × log ₂ 8) butterfly calculators as shown in FIG.

Here, when attention is paid to a portion surrounded by a dotted line in FIG. 8, it is understood that it is equivalent to FIG. That is, the N-point FFT includes N / 2 ⁿ (n is an integer of 1 or more) points. Utilizing this property, a butterfly computing unit is provided in advance according to the larger number of samples in the wireless communication method using FFT, and wiring is performed according to the number of samples of the wireless communication method by reconfiguring. Can be realized.

  Therefore, as information set at the time of reconfiguration, the number of samples may be input as control information.

Further, k _{i in} FIG. 6 means exp (−j2πi / N) at the time of N-point FFT, and is uniquely obtained by the number of samples N. Here, i represents an integer of 0 ≦ i ≦ N / 2-1 and j represents an imaginary number (j ² = −1).

  As another method, only 4 point FFT is installed and it operates 3 times at 8 point FFT. That is, the larger one is time-division according to the smaller number of samples in the wireless communication method to be used. A method of executing the FFT in several steps is also conceivable.

  In addition, only a 2-point FFT (butterfly computing unit) is installed, and the 4-point FFT is operated 4 times, and the 8-point FFT is operated 12 times. That is, only a basic configuration smaller than any wireless communication system is provided. The wireless method may be operated multiple times. As described above, the communication apparatus of the present invention does not reconfigure the common part in the FFT, but reconfigures the different part.

  As described above, according to the communication device of the present embodiment, the amount of data to be reconstructed can be reduced and the time required for downloading can be reduced by reconstructing different processing parts depending on the number of data to be orthogonally transformed. The communication method can be switched in a short time.

  Similarly, when FIG. 3 and FIG. 5 are compared, the first correlator 212 and the second correlator 203 are used in common. FIG. 9 is a block diagram of a correlator taking the case of QPSK as an example. In FIG. 9, the input signals in_i and in_q are multiplied by spreader signal sequences code_i and code_q by multipliers 901, 902, 906, and 907, respectively. The multiplier 901 multiplies in_i and code_i, the multiplier 902 multiplies in_i and code_q, the multiplier 906 multiplies in_q and code_i, and the multiplier 907 multiplies in_q and code_q.

  The adder 903 inputs the results of the multiplier 901 and the multiplier 902 and performs addition. The adder 908 inputs the results of the multipliers 906 and 907 and performs subtraction. The adder 904 inputs and adds the outputs of the register 905 having the initial value 0 and the adder 903, and stores the result in the register 905. In the adder 909, the register 910 having an initial value of 0 and the output of the adder 909 are input and added, and the result is stored in the register 910.

  By repeating this series of calculations for the length of the spread signal sequence, the correlation values out_i and out_q are output from the adders 904 and 909, respectively.

  If the spread signal sequence code_q is set to 0, it can also be used as BPSK. Thereby, even when QPSK is used in the first wireless communication signal system and BPSK is used in the third wireless communication system, the correlator can be shared by setting the modulation type as control information at the time of reconfiguration. Can do.

  As described above, according to the communication apparatus of the present embodiment, the time required for downloading is reduced by reconstructing only the connection of the arithmetic units without reconfiguring the arithmetic units, thereby reducing the amount of data to be reconstructed. The communication method can be switched in a short time.

  Further, in order to simplify the description, the case of QPSK and BPSK has been described as an example. However, even when another method is used as a modulation method, it can be shared by appropriately changing.

  FIG. 10 is a diagram illustrating an internal configuration of the compensation unit of the communication apparatus according to the present embodiment. The compensation unit 205 in FIG. 1 supports various modulation schemes such as QPSK and QAM. FIG. 10 shows the configuration of the compensation unit 205.

  The input data in is input to the switch 1001. When the signal is a known signal, the switch 1001 is connected to the PL side and input to the channel estimation unit 1002. On the other hand, when the input data in is not a known signal, the switch 1001 is connected to the DATA side and input to the amplitude / phase correction unit 1003.

  The channel estimation unit 1002 inputs a modulation type and a theoretical value of a known signal as control information, and how much the phase is rotated and how much the amplitude is distorted from the known signal input based on the modulation type. By comparing with the theoretical value, the phase correction amount and the amplitude correction amount are derived and output to the amplitude / phase correction unit 1003.

  The amplitude / phase correction unit 1003 corrects the amplitude and phase of the input data with the input amplitude correction amount and phase correction amount, and outputs them to the determination unit 1004. The determination unit 1004 inputs the type of modulation as control information. In particular, during QAM modulation, the table 1005 is used to read a table value from the input data and calculate output data out. In QPSK, the determination unit 1004 outputs nothing. The amplitude / phase correction unit 1003 may be equipped with an equalization function or a RAKE reception function.

  As described above, the compensation unit 205 can be shared by setting the modulation type and the theoretical value as control information at the time of reconfiguration.

  During BPSK modulation, it is not necessary to perform phase correction. If necessary, only amplitude correction may be performed.

  Next, the decoding process will be described. FIG. 11 is a diagram illustrating an internal configuration of the FEC unit of the communication apparatus according to the present embodiment.

  The FEC unit 206 performs error correction on received data that has been encoded such as a convolutional code and a TURBO code. FIG. 11 shows the configuration of the FEC unit 206. The input data in is connected to the switch 1101. The switch 1101 is connected to the convolutional processing unit 1102 at the time of convolutional coding, and is connected to the TURBO processing unit 1103 at the time of TURBO coding. The data storage unit 1105 is connected to the switch 1104. The switch 1104 is connected to the convolutional processing unit 1102 at the time of convolutional coding, and is connected to the TURBO processing unit 1103 at the time of TURBO coding.

  The convolutional processing unit 1102 and the TURBO processing unit 1103 each input control information such as a generator polynomial, a constraint length, a data length, and a request flag, determine whether or not to operate from the request flag, and if so, input control Based on the information, input data error correction processing is started.

  In some cases, during operation, intermediate data such as path metrics and path history is input / output to / from the data storage unit 1105. On the other hand, when it does not operate, unnecessary current consumption is cut off by turning off the clock or power supply.

  The two inputs of the switch 1106 are connected to the output of the convolutional processing unit 1102 and the output of the TURBO processing unit 1103, respectively. The corrected data is output and becomes output data out.

  As described above, the FEC unit 206 is shared by setting the switches 1101, 1104, and 1106 as connection information, and setting information such as a generator polynomial, constraint length, data length, and request flag as control information at the time of reconfiguration. be able to.

  Next, the operation of the ARQ processing unit 204 will be described. The ARQ processing unit 204 is used in the first wireless communication method and the third wireless communication method, receives the output of the second correlator 203, and stores it in the second storage unit 241. The data accumulated for one frame is output to the compensator 205 in the first wireless communication system, and after amplitude / phase correction is performed by the compensator 205, the data is output to the FEC unit 206.

  In the third wireless communication system, the data is directly output to the FEC unit 206. After the error correction processing is performed in the FEC unit 206, the data after error correction is output to the bit calculation unit 207. After the error detection check by CRC is performed in the bit calculation unit 207, the result is output to the FEC unit 206. .

  If an error remains, the FEC unit 206 performs error correction again and outputs the error-corrected data to the bit operation unit 207 again. After repeating this series of processes a predetermined number of times, if the FEC unit 206 determines that the error is not corrected, the FEC unit 206 issues a retransmission request, and the second storage unit 241 inputs the retransmission request signal of the FEC unit 206 and stores the accumulated data. Is stored, and when the accumulation of the next frame data is completed, the accumulated data for several frames is output to the compensation unit 205 or the FEC unit 206.

  On the other hand, if the FEC unit 206 determines that all errors have been corrected, it does not issue a retransmission request. In this case, the second storage unit 241 does not store the accumulated data.

  As an example, FIG. 12 shows a data flow when a retransmission is requested in the third wireless communication system, and FIG. 13 shows a data flow when no retransmission is requested. In this example, the maximum number of repetitions is two. FIG. 12 is a flowchart showing an example of the operation when there is a retransmission request of the communication apparatus of this embodiment. FIG. 13 is a flowchart showing an example of an operation when there is no retransmission request of the communication apparatus of this embodiment.

  In FIG. 12, the Nth frame data is output from the second correlator 203 from the time T0, the accumulation of the Nth frame data in the second storage unit 241 is started from the time T1, and the Nth frame data accumulated at the time T2 is started. The Nth frame data is output to the FEC unit 206, and the FEC unit 206 executes error correction processing.

  At time T3, the FEC unit 206 outputs the error-corrected data to the bit calculation unit 207, the bit calculation unit 207 performs error detection by CRC calculation, and reports the error detection result to the FEC unit 206 at time T4.

  If the FEC unit 206 determines that there is an error from the input error detection result, it executes the error correction process again and outputs the error-corrected data to the bit calculation unit 207 again at time T5. The bit calculation unit 207 performs the CRC calculation. Is again executed, and the error detection result is reported to the FEC unit 206 at time T6.

  If the FEC unit 206 determines from the input error detection result that there is an error, the FEC unit 206 outputs a retransmission request because the error could not be corrected even if the error correction process that is the predetermined number of times was executed.

  On the other hand, from time T7, the second correlator 203 outputs the (N + 1) th frame data, and from time T8, the second storage unit 241 starts accumulation of the (N + 1) th frame data. Since it is a retransmission request time, the second storage unit 241 stores the Nth frame accumulated in the past, and stores it in another place.

  At time T9, the second storage unit 241 outputs the Nth frame data and the (N + 1) th frame data to the FEC unit 206, and the FEC unit 206 executes error correction processing, and at time T10, the error-corrected data is bit-converted. The result is output to the calculation unit 207. The bit calculation unit 207 performs error detection by CRC calculation, and reports the error detection result to the FEC unit 206 at time T11.

  When the FEC unit 206 determines that there is no error from the input error detection result, the FEC unit 206 does not request retransmission. From time T12, the second correlator 203 outputs the (N + 2) th frame data, and from time T13, the second storage unit 241 starts accumulating the (N + 2) th frame data. In this example, the Nth frame data is overwritten.

  In FIG. 13, time T0 'to time T6' is the same as the example of FIG. If the FEC unit 206 determines that there is no error from the input error detection result at time T6 ', it does not request retransmission. On the other hand, the second correlator 203 outputs the (N + 1) th frame data from time T7 ′, and the second storage unit 241 starts to store the (N + 1) th frame data from time T8 ′. In this example, the Nth frame data is overwritten. The subsequent flow is the same as in FIG.

  In the present embodiment, the description has been given of the case where the FEC unit 206 outputs a retransmission request for convenience. However, the present invention is not limited to this. For example, the CPU 105 may determine from the CRC result of the bit calculation unit 207 or the bit calculation unit. 207 itself may do.

  Also, whether the ARQ processing unit 204 inputs the accumulated data from the second correlator 203 or the FEC unit 206 and whether it outputs it to the compensation unit 205 or the FEC unit 206 is determined as connection information at the time of reconfiguration. By setting, the ARQ processing unit 204 can be shared.

  Thus, according to the communication device of the present embodiment, by reconstructing only the part of the different processing with different error control methods, the amount of data to be reconstructed is reduced, the time required for downloading is reduced, The communication method can be switched in a short time.

  Next, the operation of the bit calculation unit 207 will be described. The bit calculation unit 207 is always used. Here, the first wireless communication method and the third wireless communication method use the bit calculation unit 207 for CRC calculation, and the second wireless communication method uses the descrambling process. FIG. 14, FIG. 15, FIG. 16, and FIG. 17 are block diagrams when the CRC computing unit and the descrambling processor are shared. In either case, the right side indicates the higher order side, the left side indicates the lowest order side, and includes registers 1403-1 to 1403-k-1 that shift up from the lower order side to the higher order side.

  In FIG. 14, input data in is connected to a switch 1406, and the switch 1406 outputs an output to either the CONV side or the CRC / DES side. The CONV side output of the switch 1406 is connected to one input of the switch 1404-1 and the adder 1402-1. The other input of the adder 1402-1 is connected to the output of the switch 1401-1, and the adder 1402 is connected. -1 output is input to the register 1403-1.

  The output of the register 1403-1 is connected to one input of the switch 1404-2 and the adder 1402-2, and the output of the switch 1401-2 is connected to the other input of the adder 1402-2. 2 is input to the register 1403-2. The same connection is repeated in order up to the register 1403-k-1, and the output of the register 1403-k-1 is one of three inputs of the switch 1404-k, the adder 1402-k, and the switch 1407. Connected to a certain CRC side. The other input of the adder 1402-k is connected to the CRC / DES side of the switch 1406. The output of the adder 1402-k is connected to one CRC side which is the two inputs of the switch 1408. All the outputs of the switches 1404-1 to 1404-k are input to the adder 1405, and the output of the adder 1405 is one of the other two inputs of the other input DES of the switch 1408, the adder 1409, and the switch 1407. Connected to the CONV side.

  The output of the switch 1408 is connected to the inputs of the switches 1401-1 to 1401-k-1. The other input of the adder 1409 is connected to the output CRC / DES side of the switch 1406, and the output of the adder 1409 is connected to the DES side which is the remaining one input of the switch 1407. Output data out is obtained from the output of the switch 1407.

Next, the case of CRC calculation will be described with reference to FIG. FIG. 15 is an example when the generator polynomial is X ^k−1 + X + 1.

  All switches 1404-1 to 1404-k are turned OFF. Of the switches 1401-1 to 1401-k-1, only the switch corresponding to the order of the coefficient of the generator polynomial is 1 and all the rest are turned OFF.

  In this example, only the switches 1401-1 and 1401-2 are turned on. The switch 1408 is tilted to the CRC side, and the switch 1406 is tilted to the CRC / DES side to input the input data in. On the other hand, the switch 1407 is turned to the CRC side and outputs output data out.

On the other hand, the descrambling process will be described with reference to FIG. FIG. 16 is an example when the generator polynomial is X ^k−1 + X ² +1.

  Of the switches 1401-1 to 1401-k-1, only the switch 1401-1 is turned on and the rest are turned off. Among the switches 1404-2 to 1404-k, only the switch corresponding to the order of the coefficient of the generator polynomial is 1 and all the rest are turned off.

  In this example, only the switches 1404-3 and 1404-k are turned on. Note that the switch 1404-1 is turned off. The switch 1408 is tilted to the DES side, and the switch 1406 is tilted to the CRC / DES side to input the input data in. On the other hand, the switch 1407 is turned to the DES side and outputs output data out.

  The above connection example of the bit operation unit 207 can also be shared by the CRC encoder and scrambler on the encoding side.

The bit operation unit 207 can also be used as a convolutional encoder on the encoding side. For example, when the generator polynomial is a convolutional code of X ^k-1 + X + 1, it is as shown in FIG.

  That is, all the switches 1401-1 to 1401-k-1 are turned off. Among the switches 1404-1 to 1404-k, only the switch corresponding to the order of the coefficient of the generator polynomial is 1 and all the rest are turned off.

  In this example, only the switches 1404-1, 1404-2, and 1404-k are turned on. Regardless of the switch 1408, the switch 1406 inputs the input data in by tilting to the CONV side. On the other hand, the switch 1407 falls to the CONV side and outputs output data out. For the sake of simplicity, this description is for a coding rate of 1/1, but 1 / n (n is an integer equal to or greater than 2) includes n switches 1404-1 to 1404-k and n adders 1405. By mounting in parallel, n output data can be generated at one time for one input data in.

  From the above, the bit arithmetic unit 207 can be shared by setting the settings of the switches 1401-1 to 1401-k-1 and 1404-1 to 1404-k and the switches 1406, 1407, and 1408 as connection information at the time of reconfiguration. it can.

  As described above, according to the present embodiment, since the necessary processing is limited when specialized in mobile communication, a redundant configuration such as FPGA or PLD is provided by installing the minimum necessary reconfigurable device. By reducing the degree of freedom and setting connection information and control information, it is possible to respond more flexibly than custom ASIC, so there is no need to install all circuits for each corresponding wireless communication system, The circuit scale can be reduced. Moreover, since only the connection information and control information need be used as programming data, the download time can be reduced.

  As described above, in the communication device according to the present embodiment, programming data of a large-scale wireless communication method can be downloaded at a higher speed than a conventional software defined wireless device, and handover between wireless communication methods can be performed in a short time. be able to. In addition, this eliminates the need for a dedicated channel for high-speed downloads and the need to accommodate a large number of users in a broadband / high transmission rate wireless communication system, avoiding a reduction in the user capacity of the entire system. can do.

  In the present embodiment, the decoding unit 133, in which the circuit scale is generally dominant in the baseband signal processing, has been described, but for the encoding unit 134, as shown in the example of the convolution operation, This can be implemented by appropriately expanding the calculation unit 207.

  In the present embodiment, the description has been given in which the reconfigurable device 131 is applied to the baseband signal processing of the communication apparatus. However, the present invention is not limited to this, and an application unit (not shown) connected to the CPU 105, or The CPU 105 itself may be a reconfigurable device.

  In this embodiment, the case where the communication apparatus downloads and acquires programming data of the handover destination wireless communication method has been described. However, the present invention is not limited to this, and the interface 107 of the communication apparatus in FIG. 1 is used. In conjunction with recording media such as SD cards, flash cards, memory sticks, or disks, and downloads via wired connection using 100BASE-TX, 10BASE-T, USB, IEEE1394, or optical fiber (FTTH) Also good.

  For example, select a wireless service provider on the Internet via an ADSL modem and USB, download programming data for the selected wireless service provider's communication method, and reconfigure the communication device to the desired wireless service provider's communication method. It may be constructed and used.

  In addition, download is available in general areas such as wireless LANs such as IEEE802.11a / b / g, bluetooth, and Ultra Wideband instead of wired connections such as USB in areas such as hotels, airports, and station hot spots. The specific power-saving wireless communication may be used to perform download between the communication device and the access point, or download using optical communication such as IrDA.

  In the above embodiment, the operation on the reception side has been described, but the same applies to the transmission side.

(Embodiment 2)
FIG. 18 is a block diagram showing a configuration of a communication apparatus according to Embodiment 2 of the present invention. The communication apparatus 300 of FIG. 18 is different from the communication apparatus of FIG. 1 in that it includes a signal processing card unit 301 that can be attached and detached externally, and that a reconfigurable digital signal processing part is removable.
The signal processing card unit 301 mainly includes a digital signal processing unit 103, a wireless unit communication unit 302, a CPU communication unit 303, and an identification information unit 304. A display unit 108 connected to the general-purpose bus 104 is also provided.

  The digital signal processing unit 103 transmits / receives input / output signals to / from the wireless unit 102 via the wireless unit communication unit 302, and transmits / receives input / output signals to / from the CPU 105 via the CPU communication unit 303. The identification information unit 304 stores version information of the signal processing card unit 301, and the CPU 105 accesses the identification information unit 304 via the CPU communication unit 303.

  First, the CPU 105 reads identification information for identifying the version of the signal processing card from the identification information unit 304, and refers to the storage unit 106 to recognize the version of the connected signal processing card 301.

  The storage unit 106 stores the correspondence between the identification information and the version of the signal processing card 301. FIG. 19 is a diagram illustrating an example of contents stored in the storage device of the communication device according to the present embodiment. In FIG. 19, version 1 corresponds to wireless communication method 1, and version 2 corresponds to wireless communication method 1 and wireless communication method 2. Version 3 corresponds to wireless communication systems 1, 2, and 3.

  Referring to the correspondence relationship in FIG. 19, the CPU 105 grasps the type of wireless communication method that can be reconfigured by the installed digital signal processing unit 103 according to the recognized version. Therefore, the CPU 105 can select the currently optimal wireless communication method from among the reconfigurable wireless communication methods, and can reconfigure the digital signal processing unit 103. In addition, the CPU 105 causes the identification information unit 304 to store the selected wireless communication method.

  On the other hand, the identification information unit 304 has a storage area inside as shown in FIG. 20, and stores the version of the signal processing card 301 and the selected wireless communication system. FIG. 20 is a block diagram illustrating a configuration of the storage unit of the communication apparatus according to the present embodiment. The identification information unit 304 stores the version of the signal processing card 301 and the selected wireless communication method in the storage area 305.

  The wireless unit communication unit 302 is an interface that connects the digital signal processing unit 103 and the wireless unit 102. FIG. 21 is a block diagram illustrating a configuration of a wireless unit communication unit of the communication apparatus according to the present embodiment. As illustrated in FIG. 21, the wireless unit communication unit 302 inputs data from the wireless unit 102 using an input clock and received serial data. The wireless unit communication unit 302 converts the input serial data into parallel data by a serial-parallel converter (S / P) 306, and outputs a reception control signal and reception data to the digital signal processing unit 103.

  On the other hand, the radio unit communication unit 302 uses the transmission control signal from the digital signal processing unit 103 to input transmission data and converts it into serial data by the parallel-serial converter (P / S) 307. The transmission data is output to the wireless unit 102 as transmission serial data.

  The CPU communication unit 303 also inputs / outputs data with the CPU 105 with the same configuration as the wireless unit communication unit 302. The CPU communication unit 303 outputs data input from the CPU 105 to the digital signal processing unit 103 or the identification information unit 304, and outputs data input from the digital signal processing unit 103 or the identification information unit 304 to the CPU 105. To do.

  Here, the identification information unit 304 has been explicitly described separately from the digital signal processing unit 103. However, depending on the configuration, the identification information unit 304 may be provided in the digital signal processing unit 103 in the same manner. Is possible.

  In addition, when there is a margin in the number of connection pins with the outside of the signal processing card unit 301, the wireless unit communication unit 302 or the CPU communication unit 303 may be realized by bus connection instead of serial connection.

  As described above, according to the communication device of the present embodiment, a larger number of reconfigurable elements are integrated by making it possible to attach and detach a part that reconstructs only a part that is different between a plurality of wireless communication systems. Since it can be expanded to a card, the communication device can be adapted to a larger-scale wireless communication system.

(Embodiment 3)
FIG. 22 is a block diagram showing a configuration of a communication apparatus according to Embodiment 3 of the present invention. The communication apparatus 400 in FIG. 22 includes an attachment / detachment detection unit 401, a display unit 402, a power supply unit 403, and a battery 619, and attaches / detaches a part that reconstructs only a part that is different among a plurality of wireless communication systems. If the part to be reconstructed is attached or detached, power supply to the wireless transmission part is stopped, and if the part to be reconstructed is attached, power is supplied to the wireless transmission part and the part to be reconstructed. Is different from the communication apparatus of FIG.

  The attachment / detachment detection unit 401 detects the connection between the signal processing card 301 and the communication device 400. If the connection / disconnection detection unit 401 is not connected, an attachment / detachment detection signal is input to the CPU 105 to notify that the signal processing card 301 does not exist in the communication device 400. .

  When the CPU 105 is notified that the signal processing card unit 301 does not exist in the communication device 400, the CPU 105 displays a warning to the effect that “the communication card does not exist” on the display unit 402 and notifies the user of the power supply unit. Using the power ON / OFF signal connected to 403, an instruction to cut the power supplied to the wireless unit 102 and the signal processing card unit 301 is output to the power supply unit 403.

  The power supply unit 403 cuts off the power supply from the battery 619 to the wireless unit 102 and the signal processing card unit 301 in accordance with the power ON / OFF signal output from the CPU 105.

  With the above operation, unnecessary power consumption around the wireless unit 102 and the signal processing card unit 301 can be prevented, and control can be performed so that unnecessary radio waves are not transmitted to the wireless unit 102. At this time, the communication device 400 uses the display unit 402, the interface unit 107, and the storage unit 106 to execute only functions as an application terminal, such as display / playback / editing of stored data such as images, music, and mail.

  Further, when the CPU 105 detects that the signal processing card 301 is connected to the communication device 400 via the attachment / detachment detection unit 401, the CPU 105 confirms that “the communication card has been confirmed” or “wireless”. Information indicating that “communication is available” is displayed to notify the user, and power supplied to the wireless unit 102 and the signal processing card unit 301 using the power ON / OFF signal connected to the power supply unit 403 Is supplied to the power supply unit 403.

  The power supply unit 403 starts power supply from the battery 619 to the wireless unit 102 and the signal processing card unit 301 in accordance with the power ON / OFF signal output from the CPU 105.

  The attachment / detachment detection unit 401 can be realized by a delay element and a logic gate as shown in FIG. FIG. 22A is a diagram illustrating a configuration of the attachment / detachment detection unit of the communication device according to the present embodiment.

  When the signal processing card unit 301 is removed, the connection signal connected to the GND in the signal processing card unit 301 is pulled up so that the signal processing card unit 301 becomes “1” and when the signal processing card unit 301 is connected. By using the differentiating circuit shown in FIG. 22 (a), as shown in the timing, when the connection signal changes from “1” to “0”, that is, from the state where the signal processing card unit 301 is removed. When connected, a low pulse is output to the attachment / detachment detection signal 1.

  On the other hand, when the connection signal changes from “0” to “1”, that is, when the signal processing card unit 301 is removed from the connected state, a Low pulse is output to the attachment / detachment detection signal 2. By inputting these attachment / detachment detection signals to the CPU 105, the CPU 105 can detect attachment / detachment of the signal processing card unit 301.

  The power supply unit 403 includes a switch 4031 as shown in FIG. 22B, and turns the switch 4031 on or off in response to a power ON / OFF signal from the CPU 105. When the switch 4031 is in an ON state, power from the battery 619 is supplied to the wireless unit 102 and the signal processing card unit 301. On the contrary, when it is in the OFF state, the power supply is cut off.

  As described above, according to the communication apparatus of the present embodiment, a part that reconstructs only a part that is different between a plurality of wireless communication systems can be attached and detached, and a wireless transmission part when the part to be reconstructed is attached and detached If the power supply is stopped and the part to be reconstructed is attached, power is supplied to the wireless transmission part and the part to be reconstructed to prevent unnecessary radio waves from being transmitted to the air. It can be executed as a function only as a terminal, and power consumption can be reduced.

  In addition, when the attachment / detachment is detected, the user can be warned by displaying the attachment / detachment status.

(Embodiment 4)
FIG. 23 is a block diagram showing a configuration of a communication apparatus according to Embodiment 4 of the present invention. The communication device 500 of FIG. 23 includes a wireless communication unit 501 and an application unit 502, and is different from the communication device of FIG. 22 in that the communication device 500 is separated into a wireless communication unit 501 and an application unit 502.

  Each of the wireless communication unit 501 and the application unit 502 includes a CPU. The CPU of the wireless communication unit 501 is referred to as a call control CPU 605 and the CPU of the application unit 502 is referred to as an application CPU 615. The wireless communication unit 501 includes the application communication unit 608, and the application unit 502 includes the call control communication unit 618, thereby realizing communication between the two CPUs. Specifically, it can be realized with the same configuration as the wireless unit communication unit 302 of FIG. 21 described in the second embodiment.

  The attachment / detachment detection unit 401 and the power supply unit 403 described in Embodiment 3 are mounted inside the wireless communication unit 501, and the attachment / detachment detection unit 505 and the power supply unit 504 are newly provided in the application unit 502.

  When the application CPU 615 detects that the wireless communication unit 501 does not exist in the communication device 500 via the attachment / detachment detection unit 505, the application CPU 615 displays a warning that “the wireless communication function cannot be used” on the display unit 402 to notify the user. At the same time, communication with the wireless communication unit 501 is stopped.

  Further, the application CPU 615 outputs an instruction to cut off the power supplied to the wireless communication unit 501 using the power ON / OFF signal connected to the power supply unit 504. As a result, when the wireless unit 501 is open, even if the output of the power supply unit 504 is accidentally shorted to GND or a signal from an external device, unnecessary power consumption is prevented, and it is also prevented from fire or failure. be able to. At this time, the application unit 502 of the communication apparatus 500 uses the display unit 402, the interface unit 617, and the storage unit 616, and functions only as an application terminal for displaying, playing, and editing stored data such as images, music, and mail. Execute.

  Conversely, when the application CPU 615 detects that the wireless communication unit 501 is connected to the communication device 500 via the attachment / detachment detection unit 505, the application CPU 615 displays information indicating that “wireless communication is available” on the display unit 402. In addition to displaying and informing the user, power supply to the wireless communication unit 501 is started using a power ON / OFF signal connected to the power supply unit 504.

  The battery 619 supplies power to the wireless communication unit 501 and the application unit 502, and is in a charged state when power is supplied from an external power source such as an external device.

  A connector 503 is provided between the wireless communication unit 501 and the application unit 502, and signals between the application communication unit 608 and the call control communication unit 618 can be connected or disconnected by the connector 503. Similarly, power supplied from the battery 619 to the wireless communication unit 501 can also be connected or disconnected via the connector 503.

  In this way, the communication apparatus separates the wireless communication unit 501 and the application unit 502, and the wireless communication unit 501 is mounted on the first housing 801 as shown in FIG. By mounting the application unit 502 in 802 and connecting them with a connector 503, the first casing 801 and the second casing 802 can be connected or separated.

  Thus, for example, as shown in FIG. 25, the wireless communication unit 501 in the first housing 801 is connected to an external device 700 such as a personal computer, a PDA, or a train / bus / passenger car. It can function as a modem card. In this case, the external device 700 supplies power to the wireless communication unit 501 via the connector 503.

  On the other hand, for example, as shown in FIG. 26, an application unit 502 in the second housing 802 is connected to an external device 700 such as a personal computer, a PDA, or a train / bus / passenger car, and the application from the external device 700 is performed. Data can be input / output, for example, data can be read from or written to the storage unit 616. Further, the user can take out only the second housing 802 and use it as an application terminal. When the external device 700 and the application unit 502 are in a connected state, the external device 700 can supply power to the application unit 502 via the connector 503 and can charge the battery 619.

  As described above, according to the communication device of the present embodiment, the user can expand the card to a card in which a larger number of reconfigurable elements are integrated, so that the communication device 500 is compatible with a larger-scale wireless communication system. In addition to the wireless communication terminal, the first casing 801 and the second casing 802 can be separated, so that other uses such as an application terminal and a modem card of an external device can be used. Yes, only one of them can be carried around depending on the application.

  Also, by standardizing the connector such as USB or IEEE1394, for example, it is possible to replace only the application unit 502 equipped with the latest display unit 402, for example, compared to the case where there is a conventional wireless communication unit 501. You can buy it cheaply. Conversely, only the wireless communication unit 501 can be replaced with a cheaper one. Furthermore, it is also possible to select different manufacturers for the wireless communication unit 501 and the application unit 502 according to user preferences.

  In addition, the communication function between the first casing 801 and the second casing 802 is maintained by connecting the connector 503 with a specific power-saving wireless communication method such as Bluetooth or UWB (Ultra Wide Band). It can also be separated. For example, a relatively large first casing 801 can be used in a user's bag, and a relatively small second casing 802 can be used while being worn by the user. The need to hold the two housings in the hand can be eliminated. Another advantage is that the terminal to be worn can be reduced in size and size.

  In addition, this invention is not limited to the said embodiment, It can change and implement variously. For example, in the above-described embodiment, the case of performing as a communication device has been described. However, the present invention is not limited to this, and the communication device restructuring method can be performed as software.

  For example, a program for executing the communication device restructuring method may be stored in advance in a ROM (Read Only Memory), and the program may be operated by a CPU (Central Processor Unit).

  Further, a program for executing the communication device restructuring method is stored in a computer-readable storage medium, the program stored in the storage medium is recorded in a RAM (Random Access Memory) of the computer, and the computer is stored in the program. Therefore, it may be operated.

In the above description, orthogonal transform is performed using FFT means, but the orthogonal transform means is not limited to Fourier transform, and any orthogonal transform may be used. For example, discrete cosine transform or the like may be used.

The block diagram which shows the structure of the communication apparatus which concerns on Embodiment 1 of this invention. The block diagram which shows the structure of the reconfigurable device of the communication apparatus which concerns on the said embodiment. The block diagram which shows the structure of the reconfigurable device of the communication apparatus of the said embodiment. The block diagram which shows the structure of the reconfigurable device of the communication apparatus of the said embodiment. The block diagram which shows the structure of the reconfigurable device of the communication apparatus of the said embodiment. The figure which shows the internal structure of the FFT part of the said embodiment The figure which shows an example of the internal structure of the FFT part at the time of 4 point FFT The figure which shows an example of the internal structure of the FFT part at the time of 8 point FFT Correlator block diagram taking QPSK as an example The figure which shows the internal structure of the compensation part of the communication apparatus of the said embodiment. The figure which shows the internal structure of the FEC part of the communication apparatus of the said embodiment. The flowchart which shows an example of operation | movement in the case of the resending request | requirement of the communication apparatus of the said embodiment The flowchart which shows an example of an operation | movement when there is no resending request | requirement of the communication apparatus of the said embodiment Block diagram when the CRC calculator and descrambling processor are shared Block diagram when the CRC calculator and descrambling processor are shared Block diagram when the CRC calculator and descrambling processor are shared Block diagram when the CRC calculator and descrambling processor are shared The block diagram which shows the structure of the communication apparatus which concerns on Embodiment 2 of this invention. The figure which shows an example of the content which the memory | storage device of the communication apparatus of this Embodiment memorize | stores The block diagram which shows the structure of the memory | storage part of the communication apparatus of this Embodiment. The block diagram which shows the structure of the radio | wireless part communication part of the communication apparatus of this Embodiment. The block diagram which shows the structure of the communication apparatus which concerns on Embodiment 3 of this invention. The figure which shows the structure of the attachment / detachment detection part of the communication apparatus of this Embodiment. The figure which shows the structure of the attachment / detachment detection part of the communication apparatus of this Embodiment. The block diagram which shows the structure of the communication apparatus which concerns on Embodiment 4 of this invention. The figure which shows an example of the external appearance of the communication apparatus of this Embodiment The block diagram which shows the structure of the communication apparatus of this Embodiment The block diagram which shows the structure of the application part of the communication apparatus of this Embodiment

Explanation of symbols

102 Wireless section 103 Digital signal processing section 104 General-purpose bus 105 CPU
106 storage unit 107 interface 121 reception unit 122 transmission unit 131 reconfigurable device 132 CPU bus 133 decoding unit 134 encoding unit 201 synchronization unit 202 second FFT unit 203 second correlator 204 ARQ processing unit 205 compensation unit 206 FEC unit 207 bits Arithmetic unit 211 First FFT unit 212 First correlator 213 First storage unit 214 Determination unit 241 Second storage unit 601, 903, 904, 908, 909, 1402-1 to 1402-k, 1405, 1409 Adder 602, 901 , 902, 906, 907 Multiplier 905, 910, 1403-1 to 1403-k-1 Register 1001, 1101, 1104, 1106, 1401-1 to 1401-k-1, 1404-1 to 1404-k, 1406, 1407, 140 8 switch 1002 channel estimation unit 1003 amplitude / phase correction unit 1004 determination unit 1005 table 1102 convolutional processing unit 1103 TURBO processing unit 1105 data storage unit

Claims (16)

Wireless means for receiving a radio signal and converting it to a baseband signal, a reconfigurable device having a plurality of arithmetic units that can be used in common among a plurality of wireless communication systems and perform baseband signal processing, and wireless communication Reconstructing means for reconfiguring the reconfigurable device based on programming data of a new wireless communication system when switching the system and stopping the clock and power supply of the portion not used for the reconstruction,
The communication device according to claim 1, wherein the reconstructing unit reconstructs either connection information or control information between arithmetic units that are different among a plurality of wireless communication systems for the baseband signal processing. Wireless means for receiving a radio signal and converting it to a baseband signal, a reconfigurable device having a plurality of arithmetic units that can be used in common among a plurality of wireless communication systems and perform baseband signal processing, and wireless communication Reconstructing means for reconfiguring the reconfigurable device based on programming data of a new wireless communication system when switching the system and stopping the clock and power supply of the portion not used for the reconstruction,
The computing unit includes compensation means for correcting the amplitude or phase of the baseband signal,
The communication device according to claim 1, wherein the reconstructing unit reconstructs control information corresponding to a type of modulation with respect to the compensating unit. Wireless means for receiving a radio signal and converting it to a baseband signal, a reconfigurable device having a plurality of arithmetic units that can be used in common among a plurality of wireless communication systems and perform baseband signal processing, and wireless communication Reconstructing means for reconfiguring the reconfigurable device based on programming data of a new wireless communication system when switching the system and stopping the clock and power supply of the portion not used for the reconstruction,
The arithmetic unit includes FFT means for orthogonally transforming the baseband signal,
The communication device according to claim 1, wherein the reconstructing unit reconstructs different processing parts depending on the number of data to be orthogonally transformed with respect to the FFT unit. The computing unit includes synchronization means for establishing communication synchronization,
4. The communication apparatus according to claim 3, wherein the synchronization unit determines a synchronization timing using a baseband signal obtained by demodulating a signal mapped to a subcarrier by orthogonal transform in the FFT unit. Wireless means for receiving a radio signal and converting it to a baseband signal, a reconfigurable device having a plurality of arithmetic units that can be used in common among a plurality of wireless communication systems and perform baseband signal processing, and wireless communication Reconstructing means for reconfiguring the reconfigurable device based on programming data of a new wireless communication system when switching the system and stopping the clock and power supply of the portion not used for the reconstruction,
The computing unit includes a correlation means for performing a correlation operation with a known signal sequence on the baseband signal,
The communication apparatus according to claim 1, wherein the reconstruction unit reconstructs a combination of operations in the correlation unit. The computing unit includes synchronization means for establishing communication synchronization,
6. The communication apparatus according to claim 5, wherein the synchronization unit determines a synchronization timing using a known signal sequence and a result of correlation calculation for a baseband signal in the correlation unit. Wireless means for receiving a radio signal and converting it to a baseband signal, a reconfigurable device having a plurality of arithmetic units that can be used in common among a plurality of wireless communication systems and perform baseband signal processing, and wireless communication Reconstructing means for reconfiguring the reconfigurable device based on programming data of a new wireless communication system when switching the system and stopping the clock and power supply of the portion not used for the reconstruction,
The arithmetic unit includes error control means for performing error correction of a baseband signal or a retransmission request when there is an error in the baseband signal,
The communication device is characterized in that the reconstructing means reconstructs a processing portion that differs between a plurality of error correction or error detection methods with respect to the error control means. Comprising storage means for storing the processing result of the error control means;
The communication apparatus according to claim 7, wherein the reconstructing unit reconstructs the connection with the output destination of the content stored in the storage unit.   9. The reconstructing device according to claim 1, wherein the reconfiguring unit acquires information necessary for reconfiguration from a radio signal received by the wireless unit, and reconfigures the reconfigurable device. 9. The communication device described.   An interface unit that reads data stored in a storage medium is provided, and the reconstruction unit acquires information necessary for the reconstruction from the storage medium via the interface unit, and reconstructs the reconfigurable device. The communication device according to claim 1, wherein the communication device is a device.   Interface means for receiving information necessary for reconstruction via wired connection is provided, and the reconstruction means acquires information necessary for reconstruction from the storage medium via the interface means and reconfigures the reconfigurable device. 9. The communication device according to claim 1, wherein the communication device is constructed.   Interface means for receiving information necessary for reconstruction in specific power-saving wireless communication, wherein the reconstruction means obtains information necessary for reconstruction from the storage medium via the interface means, and The communication device according to claim 1, wherein a reconfigurable device is reconstructed.   A wireless unit communication unit that relays communication between the wireless unit and the reconfigurable device; and a CPU communication unit that relays communication between the reconfigurable device and the reconstruction unit. The communication device according to any one of claims 1 to 11, wherein the device is detachable.   A first attachment / detachment detecting means for detecting attachment / detachment of the reconfigurable device and a first power supply for supplying power to the wireless means, and stopping power supply to the wireless means when the attachment / detachment of the reconfigurable device is detected. The communication apparatus according to claim 13, further comprising a power supply unit. A communication apparatus comprising: wireless communication means for performing wireless communication; and application means for displaying, reproducing, and editing image, music, and mail data, wherein the wireless communication means and the application means are separable,
The communication device includes a connector that relays communication between the wireless communication unit and the application unit,
The wireless communication unit includes a wireless unit communication unit that relays communication between the wireless unit and the reconfigurable device, and a CPU communication unit that relays communication between the removable reconfigurable device and the reconstruction unit. And application communication means for relaying communication with the application means,
The application means includes: a call control communication means for relaying communication with a wireless communication section; a separation detection means for detecting separation from the wireless communication section; and when the separation of the wireless communication section is detected, the wireless communication section The communication apparatus according to claim 1, further comprising: an application CPU that stops communication with the communication unit. A communication apparatus comprising: wireless communication means for performing wireless communication; and application means for displaying, reproducing, and editing image, music, and mail data, wherein the wireless communication means and the application means are separable,
The communication device includes a connector that relays communication between the wireless communication unit and the application unit,
The wireless communication unit includes a wireless unit communication unit that relays communication between the wireless unit and the reconfigurable device, and a CPU communication unit that relays communication between the removable reconfigurable device and the reconstruction unit. Detachment detecting means for detecting attachment / detachment of the reconfigurable device; and supplying power to the wireless means; and stopping the supply of power to the wireless means when the attachment / detachment of the reconfigurable device is detected. 1 power supply means and application communication means for relaying communication with the application unit,
The application unit includes a call control communication unit that relays communication with the wireless communication unit, a separation detection unit that detects separation from the wireless communication unit, and supplies power to the wireless communication unit. Second power supply means for stopping power supply to the wireless means when separation is detected, and an application for stopping communication to the wireless communication section when separation of the wireless communication section is detected The communication apparatus according to claim 1, further comprising a CPU.

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