Wireless transceiver and wireless transmission / reception method

Abstract

To provide a wireless transmitter-receiver with which it is possible to satisfy the performance required for the case when the characteristic of the transmitted and received signal ranges wide.SOLUTION: Provided is a wireless transmitter-receiver comprising: a wireless transmitter having a first transmit antenna signal processing unit that acquires a transmit signal transmitted by a first transmit antenna and generates a processed first transmit antenna signal; and a wireless receiver including a receive antenna signal common processing unit for performing common processing on two or more receive antennas so as to generate a processed receive antenna output signal, a receive side antenna selection unit for selecting the antenna used for reception from two or more receive antennas, and a synthesis unit for synthesizing the processed first transmit antenna signal and the processed receive antenna signal, one or more of the two or more receive antennas having their own processing unit.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a wireless transceiver and a wireless transmission / reception method.

Background Art

[0002] In recent years in wireless communication, frequency resources have been used more, such as the traffic volume increasing about 1.4 times in a year, and the state where frequency resources cannot be used when needed has become common.

[0003] In communication networks such as 5G and Beyond 5G, multiplexing techniques are being studied as methods for effectively using frequency resources. For example, Non-Patent Document 1 discloses a technique in which one transmission antenna and one reception antenna are used for full-duplex wireless communication, which is one of the multiplexing techniques.

[0004] Full-duplex wireless communication simultaneously performs wireless signal transmission and wireless signal reception. Therefore, theoretically, frequency resources can be used twice as much, and it is highly useful as a method for effectively using frequency resources.

Prior Art Documents

Non-Patent Documents

[0005]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Conventional techniques such as that described in Non-Patent Document 1 may have difficulty in satisfying the required performance when the characteristics of transmitted and received signals vary widely.

[0007] An object of one aspect of an embodiment of the present invention is to provide a wireless transceiver capable of satisfying performance required when a wide range of characteristics of transmitted and received signals are available. [Means for solving the problem]

[0008] A first transmitting antenna and a second transmitting antenna are connected to the first transmitting antenna by a signal in full-duplex wireless communication. Physically different from each other A wireless transceiver for communicating using three or more antennas including two or more receiving antennas, the wireless transceiver having a first transmitting antenna signal processing unit that acquires a transmission signal transmitted by a first transmitting antenna and generates a processed first transmitting antenna signal, a receiving antenna signal common processing unit that performs common processing for the two or more receiving antennas to generate a processed receiving antenna output signal, and , satisfying the performance requirements according to the characteristics of the transmitted and received signals Receiving Letter A a receiving antenna selection unit that selects an antenna; and a combining unit that combines a processed first transmitting antenna signal and a processed receiving antenna output signal, and one or more of the two or more receiving antennas are A received antenna signal that acquires the received signal received by the received antenna and generates a processed received antenna signal Processing unit , and the received antenna signal common processing unit generates the processed received antenna output signal by performing the common processing on the processed received antenna signal generated by the received antenna signal processing unit A wireless transceiver is provided, comprising: a wireless communication device;

[0009] In full-duplex wireless communication, the signal Physically different from each other A wireless transceiver for communicating using three or more antennas including two or more transmitting antennas and a first receiving antenna, the wireless transceiver comprising: a transmitting antenna signal common processing unit for performing common processing for the two or more transmitting antennas to generate a processed transmitting antenna output signal; , satisfying the performance requirements according to the characteristics of the transmitted and received signals Sending Letter A and a transmitting antenna selection unit for selecting an antenna, and one or more of the two or more transmitting antennas are A transmitted antenna signal that acquires the transmitted signal transmitted by the transmitted antenna and generates a processed transmitted antenna signal Processing unit , and the transmitted antenna signal common processing unit generates the processed transmitted antenna output signal by performing the common processing on the processed transmitted antenna signal generated by the transmitted antenna signal processing unit, a wireless transmitter, a first received antenna signal processing unit that obtains a received signal received by a first received antenna and generates a processed first received antenna signal, and a combining unit that combines a processed transmitted antenna output signal and the processed first received antenna signal, and a wireless receiver, A wireless transceiver characterized by comprising:

[0010] By the signal in full-duplex wireless communication, Physically different from each other Two or more transmission antennas and Physically different from each other A wireless transceiver that communicates using four or more antennas including two or more reception antennas, a transmission antenna signal common processing unit that generates a processed transmission antenna output signal by performing common processing on two or more transmission antennas, and two or more transmission antennas , satisfying the performance requirements according to the characteristics of the transmitted and received signals se Letter A lects a transmission-side antenna selection unit, and among the two or more transmission antennas, one or more A transmitted antenna signal that acquires the transmitted signal transmitted by the transmitted antenna and generates a processed transmitted antenna signal has a processing unit , and the transmitted antenna signal common processing unit generates the processed transmitted antenna output signal by performing the common processing on the processed transmitted antenna signal generated by the transmitted antenna signal processing unit , a wireless transmitter, a reception antenna signal common processing unit that generates a processed reception antenna output signal by performing common processing on two or more reception antennas, and two or more reception antennas , satisfying the performance requirements according to the characteristics of the transmitted and received signals re Letter A ceives a reception-side antenna selection unit that selects an antenna, and a combining unit that combines the processed transmission antenna output signal and the processed reception antenna output signal, and among the two or more reception antennas, one or more A received antenna signal that acquires the received signal received by the received antenna and generates a processed received antenna signal has a processing unit , and the received antenna signal common processing unit generates the processed received antenna output signal by performing the common processing on the processed received antenna signal generated by the received antenna signal processing unit , a wireless receiver, A wireless transceiver characterized by comprising:

[0011] By the signal in full-duplex wireless communication, Physically different from each other A wireless transmission / reception method in a wireless transceiver that communicates using three or more antennas including two or more transmission antennas and a first reception antenna, the first step of generating a processed transmission antenna output signal by performing common processing on two or more transmission antennas, and two or more transmission antennas , satisfying the performance requirements according to the characteristics of the transmitted and received signals se Letter AA second step of selecting an antenna, a third step of obtaining a received signal received by the first receiving antenna and generating a processed first receiving antenna signal, and a fourth step of combining the processed transmission antenna output signal and the processed first receiving antenna signal, wherein one or more of the two or more transmission antennas A transmitted antenna signal that acquires the transmitted signal transmitted by the transmitted antenna and generates a processed transmitted antenna signal have a processing unit , and the first step generates the processed transmitted antenna output signal by performing the common processing on the processed transmitted antenna signal generated by the transmitted antenna signal processing unit , and a wireless transmission / reception method characterized by this is provided.

Effects of the Invention

[0012] According to the present invention, a wireless transceiver capable of satisfying the performance required when the characteristics of the signal to be transmitted and received are wide can be realized.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0014] Hereinafter, one aspect of the embodiment of the present invention will be described in detail with reference to the drawings. One aspect of the embodiment of the present invention is assumed to be used in a communication network such as 5G or Beyond 5G.

[0015] (This embodiment) FIG. 1 is a block diagram showing the configuration of the wireless transceiver 1 according to the present embodiment. For example, the wireless transceiver 1 communicates using four or more antennas including two or more transmission antennas and two or more reception antennas by signals in full-duplex wireless communication.

[0016] For example, the two or more transmission antennas include a first transmission antenna 3 and a second transmission antenna 4. Also, for example, the two or more reception antennas include a first reception antenna 5 and a second reception antenna 6.

[0017] The wireless transceiver 1 includes a wireless transmitter 10 that acquires transmission signals such as analog signals transmitted by the transmission antennas 3 and 4, and a wireless receiver 20 that generates a corrected reception signal based on reception signals such as analog signals received by the reception antennas 5 and 6.

[0018] For example, the wireless transceiver 1, a transmission signal processing unit 30 described later, and a reception signal processing unit 40 described later are provided in a base station that performs full-duplex wireless communication with a terminal such as a smartphone via a channel.

[0019] The wireless transmitter 10 transmits the acquired transmission signal to the wireless receiver 20. It is assumed that the wireless transmitter 10 may add transmission-side correction or the like to the acquired transmission signal and then transmit it to the wireless receiver 20.

[0020] The wireless transmitter 10 has a transmission antenna signal processing unit 11 (hereinafter, this may also be referred to as a first transmission antenna signal processing unit), a transmission antenna signal common processing unit 12, a transmission antenna signal processing unit 13 (hereinafter, this may also be referred to as a second transmission antenna signal processing unit), and a transmission-side antenna selection unit 14.

[0021] The wireless receiver 20 includes a reception antenna signal processing unit 21 (hereinafter, this may also be referred to as the first reception antenna signal processing unit), a reception antenna signal common processing unit 22, a reception antenna signal processing unit 23 (hereinafter, this may also be referred to as the second reception antenna signal processing unit), a reception-side antenna selection unit 24, and a combining unit 25. For example, the transmission signal is generated by the transmission signal processing unit 30. Also, based on the corrected reception signal generated by the wireless receiver 20, the reception signal processing unit 40 generates a digital signal or the like.

[0022] The transmission antenna signal processing unit 11, the transmission antenna signal common processing unit 12, the transmission antenna signal processing unit 13, the transmission-side antenna selection unit 14, the reception antenna signal processing unit 21, the reception antenna signal common processing unit 22, the reception antenna signal processing unit 23, the reception-side antenna selection unit 24, and the combining unit 25 are, for example, integrated circuits.

[0023] The transmission antenna signal processing unit 11 acquires the transmission signal transmitted by the transmission antenna 3, adds transmission-side corrections and the like, and generates a processed first transmission antenna signal. The transmission antenna signal processing unit 13 acquires the transmission signal transmitted by the transmission antenna 4, adds transmission-side corrections and the like, and generates a processed second transmission antenna signal.

[0024] The transmission antenna signal common processing unit 12 acquires the processed first transmission antenna signal or the processed second transmission antenna signal, adds transmission-side corrections common to the transmission antennas 3 and 4 to the processed first transmission antenna signal or the processed second transmission antenna signal, and generates a processed transmission antenna output signal.

[0025] The transmission-side antenna selection unit 14 selects the antenna to be used for transmission from the transmission antenna 3 or the transmission antenna 4. When the transmission antenna 3 is selected, the transmission antenna signal common processing unit 12 acquires the processed first transmission antenna signal. When the transmission antenna 4 is selected, the transmission antenna signal common processing unit 12 acquires the processed second transmission antenna signal.

[0026] The transmission antenna signal processing unit 11 or the transmission antenna signal processing unit 13 may not be provided. For example, when the transmission antenna signal processing unit 11 is not provided, when the transmission antenna 3 is selected, the transmission antenna signal common processing unit 12 acquires the transmission signal transmitted by the transmission antenna 3, adds transmission-side corrections common to the transmission antennas 3 and 4, etc., and generates a processed transmission antenna output signal.

[0027] For example, when the transmission antenna signal processing unit 13 is not provided, when the transmission antenna 4 is selected, the transmission antenna signal common processing unit 12 acquires the transmission signal transmitted by the transmission antenna 4, adds transmission-side corrections common to the transmission antennas 3 and 4, etc., and generates a processed transmission antenna output signal.

[0028] The reception antenna signal processing unit 21 acquires the reception signal received by the reception antenna 5, adds reception-side corrections, etc., and generates a processed first reception antenna signal. The reception antenna signal processing unit 23 acquires the reception signal received by the reception antenna 6, adds reception-side corrections, etc., and generates a processed second reception antenna signal.

[0029] The reception antenna signal common processing unit 22 acquires the processed first reception antenna signal or the processed second reception antenna signal, adds reception-side corrections common to the reception antennas 5 and 6, etc., to the processed first reception antenna signal or the processed second reception antenna signal, and generates a processed reception antenna output signal.

[0030] The reception-side antenna selection unit 24 selects the antenna to be used for reception from the reception antenna 5 or the reception antenna 6. When the reception antenna 5 is selected, the reception antenna signal common processing unit 22 acquires the processed first reception antenna signal. When the reception antenna 6 is selected, the reception antenna signal common processing unit 22 acquires the processed second transmission antenna signal.

[0031] The reception antenna signal processing unit 21 or the reception antenna signal processing unit 23 may not be provided. For example, when the reception antenna signal processing unit 21 is not provided, when the reception antenna 5 is selected, the reception antenna signal common processing unit 22 acquires the reception signal received by the reception antenna 5, adds reception-side correction common to the reception antennas 5 and 6, etc., and generates a processed reception antenna output signal.

[0032] For example, when the reception antenna signal processing unit 23 is not provided, when the reception antenna 6 is selected, the reception antenna signal common processing unit 22 acquires the reception signal received by the reception antenna 6, adds reception-side correction common to the reception antennas 5 and 6, etc., and generates a processed reception antenna output signal. The combining unit 25 combines the processed transmission antenna output signal and the processed reception antenna output signal.

[0033] Note that, for example, the above-mentioned reception-side correction and transmission-side correction are time delay processing and phase change processing. More specifically, at least one of the transmission antenna signal processing unit 11, the transmission antenna signal processing unit 13, and the transmission antenna signal common processing unit 12 may add at least one of time delay processing and phase change processing to the transmission signal when generating at least one of the processed first transmission antenna signal, the processed second transmission antenna signal, and the processed transmission antenna output signal.

[0034] Also, at least one of the reception antenna signal processing unit 21, the reception antenna signal processing unit 23, and the reception antenna signal common processing unit 22 may add at least one of time delay processing and phase change processing to the reception signal when generating at least one of the processed first reception antenna signal, the processed second reception antenna signal, and the processed reception antenna output signal.

[0035] Also, for example, there may be one transmission antenna, such as the transmission antenna 3. In this case, in FIG. 1, the transmission antenna 4, the transmission antenna signal common processing unit 12, the transmission antenna signal processing unit 13, and the transmission-side antenna selection unit 14 become unnecessary.

[0036] Specifically, the wireless transmitter 10 has a transmission antenna signal processing unit 11. The wireless receiver 20 has a reception antenna signal processing unit 21, a reception antenna signal common processing unit 22, a reception antenna signal processing unit 23, a reception-side antenna selection unit 24, and a combining unit 25. The transmission antenna signal processing unit 11 acquires the transmission signal transmitted by the transmission antenna 3, adds transmission-side correction and the like, and generates a processed first transmission antenna signal.

[0037] The reception antenna signal processing unit 21 acquires the reception signal received by the reception antenna 5, adds side correction and the like, and generates a processed first reception antenna signal. The reception antenna signal processing unit 23 acquires the reception signal received by the reception antenna 6, adds reception-side correction and the like, and generates a processed second reception antenna signal.

[0038] The reception antenna signal common processing unit 22 acquires the processed first reception antenna signal or the processed second reception antenna signal, adds reception-side correction common to the reception antennas 5 and 6 to the processed first reception antenna signal or the processed second reception antenna signal, and generates a processed reception antenna output signal.

[0039] The reception-side antenna selection unit 24 selects the antenna to be used for reception from the reception antenna 5 or the reception antenna 6. The reception antenna signal common processing unit 22 acquires the processed first reception antenna signal. When the reception antenna 6 is selected, the reception antenna signal common processing unit 22 acquires the processed second transmission antenna signal. The combining unit 25 combines the processed first transmission antenna signal and the processed reception antenna output signal.

[0040] Also, for example, there may be only one reception antenna 5. In this case, in FIG. 1, the reception antenna 6, the reception antenna signal common processing unit 22, the reception antenna signal processing unit 23, and the reception-side antenna selection unit 24 are unnecessary.

[0041] Specifically, the wireless transmitter 10 includes a transmission antenna signal processing unit 11, a transmission antenna signal common processing unit 12, a transmission antenna signal processing unit 13, and a transmission-side antenna selection unit 14. The wireless receiver 20 includes a reception antenna signal processing unit 21 and a combining unit 25.

[0042] The transmission antenna signal processing unit 11 acquires the transmission signal transmitted by the transmission antenna 3, adds transmission-side correction, etc., and generates a processed first transmission antenna signal. The transmission antenna signal processing unit 13 acquires the transmission signal transmitted by the transmission antenna 4, adds transmission-side correction, etc., and generates a processed second transmission antenna signal.

[0043] The transmission antenna signal common processing unit 12 acquires the processed first transmission antenna signal or the processed second transmission antenna signal, adds transmission-side correction common to the transmission antennas 3 and 4 to the processed first transmission antenna signal or the processed second transmission antenna signal, and generates a processed transmission antenna output signal.

[0044] The transmission-side antenna selection unit 14 selects the antenna to be used for transmission from the transmission antenna 3 or the transmission antenna 4. When the transmission antenna 3 is selected, the transmission antenna signal common processing unit 12 acquires the processed first transmission antenna signal. When the transmission antenna 4 is selected, the transmission antenna signal common processing unit 12 acquires the processed second transmission antenna signal.

[0045] The reception antenna signal processing unit 21 acquires the reception signal received by the reception antenna 5, adds reception-side correction, etc., and generates a processed first reception antenna signal. The combining unit 25 combines the processed transmission antenna output signal and the processed first reception antenna signal.

[0046] In other words, the transmission antenna signal common processing unit 12 can be said to generate a processed transmission antenna output signal by performing common processing on two or more transmission antennas. Also, the transmission-side antenna selection unit 14 can be said to select an antenna to be used for transmission from two or more transmission antennas. Also, one or more of the two or more transmission antennas can be said to have their own processing units (for example, transmission antenna signal processing units 11, 13, etc.).

[0047] Also, the reception antenna signal common processing unit 22 can be said to generate a processed reception antenna output signal by performing common processing on two or more reception antennas. Also, the reception-side antenna selection unit 24 can be said to select an antenna to be used for reception from two or more reception antennas. Also, the combining unit 25 can be said to combine the processed transmission antenna output signal and the processed reception antenna output signal. Also, one or more of the two or more reception antennas can be said to have their own processing units (for example, reception antenna signal processing units 21, 23, etc.).

[0048] Also, at least one of the own processing unit that one or more of the two or more transmission antennas have and the transmission antenna signal common processing unit 12 may apply at least one of time delay processing and phase change processing to the transmission signal when generating a signal.

[0049] Also, at least one of the own processing unit that one or more of the two or more reception antennas have and the reception antenna signal common processing unit 22 may apply at least one of time delay processing and phase change processing to the reception signal when generating a signal.

[0050] Next, an example of the transmission signal processing unit 30 will be described with reference to FIG. 2. FIG. 2 is a block diagram showing the configuration of the transmission signal processing unit 30 according to the present embodiment. The transmission signal processing unit 30 includes, for example, a function generator 31, a modulator 32, and an amplifier 36 that amplifies a signal. The function generator 31 is a device that generates an analog signal by mapping a digital signal such as binary data to a symbol represented by a vector.

[0051] The modulator 32 is a device that modulates an analog signal and includes a splitter 33, an oscillator 34, and a phase converter 35. The splitter 33 is a device that decomposes the signal obtained from the function generator 31 into a sine wave component and a cosine wave component.

[0052] The analog signal decomposed into the cosine wave component by the splitter 33 is multiplied by a carrier signal whose oscillation frequency is controlled by the oscillator 34 to become an I-channel signal. Similarly, the analog signal decomposed into the sine wave component by the splitter 33 is multiplied by a carrier signal whose oscillation frequency is controlled by the oscillator 34 and whose phase is converted by the phase converter to become a Q-channel signal.

[0053] The analog signal obtained by adding the I-channel signal and the Q-channel signal is amplified by the amplifier 36 and transmitted to the wireless transmitter 10. When being amplified by the amplifier 36, amplifier noise, which is the noise of the amplifier 36, is added to the signal obtained by adding the I-channel signal and the Q-channel signal.

[0054] Next, an example of the received signal processing unit 40 will be described with reference to FIG. 3. It is a block diagram showing the configuration of the received signal processing unit 40 according to the present embodiment. The received signal processing unit 40 is a device that decodes an analog signal into a digital signal or the like, and includes integrators 41, 44, an oscillator 42, a phase converter 43, a digital canceller 45 for the I-channel, a digital canceller 46 for the Q-channel, bit array determiners 47, 48, and a data combiner 49.

[0055] The corrected received signal is detected as a signal for the I-channel by the signal detector 50. The detected signal for the I-channel is multiplied by a carrier signal whose oscillation frequency is controlled by the oscillator 42 and integrated by the integrator 41 to become an I-channel signal.

[0056] The detected signal for the I channel is multiplied by a carrier signal whose oscillation frequency is controlled by the oscillator 42 and whose phase is converted by the phase converter, and is integrated by the integrator 44 to become a Q channel signal.

[0057] The I channel signal generated by the integrator 41 has its bit array determined by the bit array determiner 47 and is transmitted to the data combiner 49. The Q channel signal generated by the integrator 44 has its bit array determined by the bit array determiner 48 and is transmitted to the data combiner 49.

[0058] The data combiner 49 combines the I channel signal and the Q channel signal whose bit arrays are determined by the bit array determiners 47 and 48 to generate binary data which is a digital signal.

[0059] Next, with reference to FIG. 4, an explanation will be given of the case where the wireless transceiver 1 communicates using four or more antennas including two or more transmission antennas and two or more reception antennas by signals in full-duplex wireless communication.

[0060] FIG. 4 is a sequence diagram for explaining the wireless transceiver function provided in the wireless transceiver according to the present embodiment. First, the case where the transmission antenna 3 is selected in the wireless transmitter 10 will be described. The transmission antenna signal processing unit 11 acquires the transmission signal transmitted by the transmission antenna 3, adds transmission-side correction and the like, and transmits the processed first transmission antenna signal to the transmission antenna signal common processing unit 12 (S1).

[0061] The transmission antenna signal common processing unit 12 acquires the processed first transmission antenna signal, adds transmission-side correction and the like, and transmits the processed transmission antenna output signal to the synthesizing unit 25 (S3). When the transmission antenna 3 is selected, steps S1 and S3 are executed by the wireless transmitter 10.

[0062] Next, an explanation will be given of the case when the transmission antenna 4 is selected in the wireless transmitter 10. The transmission antenna signal processing unit 13 acquires the transmission signal transmitted by the transmission antenna 4, adds transmission-side correction, etc., and transmits the processed second transmission antenna signal thus generated to the synthesizing unit 25 (S2).

[0063] The transmission antenna signal common processing unit 12 acquires the processed second transmission antenna signal, adds transmission-side correction, etc., and transmits the processed transmission antenna output signal thus generated to the synthesizing unit 25 (S3). When the transmission antenna 4 is selected, steps S2 and S3 are executed by the wireless transmitter 10.

[0064] When the transmission antenna 4, the transmission antenna signal common processing unit 12, and the transmission antenna signal processing unit 13 are not present, the transmission antenna signal processing unit 11 acquires the transmission signal transmitted by the transmission antenna 3, adds transmission-side correction, etc., and transmits the processed first transmission antenna signal thus generated to the synthesizing unit 25 (S1, S3).

[0065] An explanation will be given of the case when the reception antenna 5 is selected in the wireless receiver 20. The reception antenna signal processing unit 21 acquires the reception signal received by the reception antenna 5, adds reception-side correction, etc., and transmits the processed first reception antenna signal thus generated to the reception antenna signal common processing unit 22 (S4).

[0066] The reception antenna signal common processing unit 22 acquires the processed first reception antenna signal, adds reception-side correction, etc., and transmits the processed reception antenna output signal thus generated to the synthesizing unit 25 (S6). When the reception antenna 5 is selected, steps S4 and S6 are executed by the wireless receiver 20.

[0067] Next, an explanation will be given of the case when the reception antenna 6 is selected in the wireless receiver 20. The reception antenna signal processing unit 23 acquires the reception signal received by the reception antenna 6, adds reception-side correction, etc., and transmits the processed second reception antenna signal thus generated to the synthesizing unit 25 (S5). When the reception antenna 6 is selected, steps S5 and S6 are executed by the wireless receiver 20.

[0068] When there is no receiving antenna 6, receiving antenna signal common processing unit 22, and receiving antenna signal processing unit 23, the receiving antenna signal processing unit 21 acquires the received signal received by the receiving antenna 5, adds reception-side correction, etc., and transmits the processed first transmission antenna signal thus generated to the combining unit 25 (S4, S6).

[0069] Next, with reference to FIG. 5, a description will be given of the case where the wireless transceiver 1 communicates using four or more antennas including two or more transmission antennas and two or more receiving antennas by signals in full-duplex wireless communication.

[0070] FIG. 5 is a flowchart showing the processing procedure of the wireless transmission / reception processing according to the present embodiment. First, the transmission antenna signal common processing unit 12 transmits a signal based on the selected transmission antenna to the combining unit 25 (S11).

[0071] For example, when the transmission antenna 3 is selected by the transmission-side antenna selection unit 14, the transmission antenna signal common processing unit 12 generates a processed transmission antenna output signal based on the processed first transmission antenna signal generated by the transmission antenna signal processing unit 11 based on the transmission signal transmitted by the transmission antenna 3, and transmits it to the combining unit 25.

[0072] For example, when the transmission antenna 4 is selected by the transmission-side antenna selection unit 14, the transmission antenna signal common processing unit 12 generates a processed transmission antenna output signal based on the processed second transmission antenna signal generated by the transmission antenna signal processing unit 13 based on the transmission signal transmitted by the transmission antenna 4, and transmits it to the combining unit 25.

[0073] When there is no transmission antenna 4, transmission antenna signal common processing unit 12, transmission antenna signal processing unit 13, and transmission-side antenna selection unit 14, the transmission antenna signal processing unit 11 acquires the transmission signal transmitted by the transmission antenna 3, adds transmission-side correction, etc., and transmits the processed first transmission antenna signal thus generated to the combining unit 25.

[0074] Next, the received antenna signal common processing unit 22 transmits the signal based on the selected received antenna to the combining unit 25 (S12). For example, when the receiving antenna 5 is selected by the receiving-side antenna selection unit 24, the received antenna signal common processing unit 22 further generates a processed received antenna output signal based on the processed first received antenna signal generated by the received antenna signal processing unit 21 based on the received signal received by the receiving antenna 5, and transmits it to the combining unit 25.

[0075] For example, when the receiving antenna 6 is selected by the receiving-side antenna selection unit 24, the received antenna signal common processing unit 22 further generates a processed received antenna output signal based on the processed second received antenna signal generated by the received antenna signal processing unit 23 based on the received signal received by the receiving antenna 6, and transmits it to the combining unit 25.

[0076] In the case where the receiving antenna 6, the received antenna signal common processing unit 22, the received antenna signal processing unit 23, and the receiving-side antenna selection unit 24 are not present, the received antenna signal processing unit 21 acquires the received signal received by the receiving antenna 5, adds reception-side correction, etc., and transmits the generated processed first transmission antenna signal to the combining unit 25.

[0077] Next, the combining unit 25 combines the processed transmission antenna output signal, which is the signal transmitted from the transmission antenna signal common processing unit 12, and the processed received antenna output signal, which is the signal transmitted from the received antenna signal common processing unit 22 (S13).

[0078] In the case where the transmission antenna 4, the transmission antenna signal common processing unit 12, the transmission antenna signal processing unit 13, and the transmission-side antenna selection unit 14 are not present, the combining unit 25 combines the processed first transmission antenna signal, which is the signal transmitted from the transmission antenna signal processing unit 11, and the processed received antenna output signal, which is the signal transmitted from the received antenna signal common processing unit 22.

[0079] Also, when there are no receiving antenna 6, receiving antenna signal common processing unit 22, receiving antenna signal processing unit 23, and receiving-side antenna selection unit 24, combining unit 25 combines the processed transmission antenna output signal, which is the signal transmitted from transmission antenna signal common processing unit 12, and the processed first receiving antenna signal, which is the signal transmitted from receiving antenna signal processing unit 21.

[0080] Thus, in wireless transceiver 1 according to the present embodiment, for example, in at least one of the receiving antenna and the transmitting antenna, an antenna to be used is selected from two or more physically different antennas, and processing according to the characteristics of the selected antenna is performed on the receiving side.

[0081] For example, when performing robust control at a base station, and when there are two or more available transmitting antennas in wireless transceiver 1 according to the present embodiment, by switching the transmitting antenna to be used, when it is desired to transmit a large-capacity signal, the large-capacity signal can be transmitted in as short a time as possible, and when it is desired to transmit a signal with low latency, the signal can be transmitted with less delay.

[0082] When using the base station using the present embodiment, when there are two or more available receiving antennas, by switching the receiving antenna, it is possible to suppress the self-interference signal corresponding to the transmitting antenna to be transmitted, and an improvement in communication quality can be expected, and effective utilization of frequency resources can also be expected.

[0083] Therefore, by using wireless transceiver 1 according to the present embodiment, it is possible to satisfy the performance required when the characteristics of the signal to be transmitted and received are wide-ranging. Specifically, for example, a signal that leaks from wireless transmitter 10 can be effectively canceled in wireless receiver 20.

[0084] In the above-described embodiment, the transmission antenna signal processing unit 11, the transmission antenna signal common processing unit 12, the transmission antenna signal processing unit 13, the transmission-side antenna selection unit 14, the reception antenna signal processing unit 21, the reception antenna signal common processing unit 22, the reception antenna signal processing unit 23, the reception-side antenna selection unit 24, and the combining unit 25 have been described in the case of an integrated circuit, but the present embodiment is not limited to this.

[0085] For example, the transmission antenna signal processing unit 11, the transmission antenna signal common processing unit 12, the transmission antenna signal processing unit 13, the transmission-side antenna selection unit 14, the reception antenna signal processing unit 21, the reception antenna signal common processing unit 22, the reception antenna signal processing unit 23, the reception-side antenna selection unit 24, and the combining unit 25 may be, for example, programs stored in a RAM (Random Access Memory) not shown provided in the base station. For example, the program is executed by being called by a CPU (Central Processing Unit) not shown provided in the base station.

Explanation of Reference Numerals

[0086] 1... Radio transceiver, 3, 4... Transmission antennas, 5, 6... Reception antennas, 10... Radio transmitter, 11, 13... Transmission antenna signal processing units, 12... Transmission antenna signal common processing unit, 14... Transmission-side antenna selection unit, 20... Radio receiver, 21, 23... Reception antenna signal processing units, 22... Reception antenna signal common processing unit, 24... Reception-side antenna selection unit, 25... Combining unit, 30... Transmission signal processing unit, 40... Reception signal processing unit.

Claims

1. A wireless transceiver that communicates using three or more antennas including a first transmission antenna and two or more reception antennas that are physically different from each other by signals in full-duplex wireless communication, a wireless transmitter having a first transmission antenna signal processing unit that acquires a transmission signal transmitted by the first transmission antenna and generates a processed first transmission antenna signal, a reception antenna signal common processing unit that generates a processed reception antenna output signal by performing common processing on the two or more reception antennas, a reception-side antenna selection unit that selects a reception antenna that satisfies performance required according to the characteristics of the signal to be transmitted and received from the two or more reception antennas, a combining unit that combines the processed first transmission antenna signal and the processed reception antenna output signal, and has, one or more of the reception antennas among the two or more have a reception antenna signal processing unit that acquires a reception signal received by the reception antenna and generates a processed reception antenna signal, the reception antenna signal common processing unit includes a wireless receiver that generates the processed reception antenna output signal by performing the common processing on the processed reception antenna signal generated by the reception antenna signal processing unit, A wireless transceiver characterized by the above.

2. A wireless transceiver that communicates using three or more antennas including two or more transmission antennas that are physically different from each other and a first reception antenna by signals in full-duplex wireless communication, a transmission antenna signal common processing unit that generates a processed transmission antenna output signal by performing common processing on the two or more transmission antennas, a transmission-side antenna selection unit that selects a transmission antenna that satisfies performance required according to the characteristics of the signal to be transmitted and received from the two or more transmission antennas, and has, one or more of the transmission antennas among the two or more have a transmission antenna signal processing unit that acquires a transmission signal transmitted by the transmission antenna and generates a processed transmission antenna signal, the transmission antenna signal common processing unit includes a wireless transmitter that generates the processed transmission antenna output signal by performing the common processing on the processed transmission antenna signal generated by the transmission antenna signal processing unit, a first reception antenna signal processing unit that acquires a reception signal received by the first reception antenna and generates a processed first reception antenna signal, A synthesizing unit that synthesizes the processed transmission antenna output signal and the processed first reception antenna signal, and a radio receiver comprising the same. A radio transceiver characterized by the above. **Claim 3** A radio transceiver that communicates using four or more antennas including two or more transmission antennas that are physically different from each other and two or more reception antennas that are physically different from each other by signals in full-duplex wireless communication, A transmission antenna signal common processing unit that generates a processed transmission antenna output signal by performing common processing on the two or more transmission antennas, A transmission-side antenna selection unit that selects a transmission antenna that satisfies the performance required according to the characteristics of the signal to be transmitted and received from the two or more transmission antennas, One or more of the two or more transmission antennas have a transmission antenna signal processing unit that acquires the transmission signal transmitted by the transmission antenna and generates a processed transmission antenna signal, The transmission antenna signal common processing unit generates the processed transmission antenna output signal by performing the common processing on the processed transmission antenna signal generated by the transmission antenna signal processing unit, a radio transmitter, A reception antenna signal common processing unit that generates a processed reception antenna output signal by performing common processing on the two or more reception antennas, A reception-side antenna selection unit that selects a reception antenna that satisfies the performance required according to the characteristics of the signal to be transmitted and received from the two or more reception antennas, A synthesizing unit that synthesizes the processed transmission antenna output signal and the processed reception antenna output signal, One or more of the two or more reception antennas have a reception antenna signal processing unit that acquires the reception signal received by the reception antenna and generates a processed reception antenna signal, The reception antenna signal common processing unit generates the processed reception antenna output signal by performing the common processing on the processed reception antenna signal generated by the reception antenna signal processing unit, a radio receiver, and is provided with the same. A radio transceiver characterized by the above. **Claim 4** At least one of the transmission antenna signal processing unit and the transmission antenna signal common processing unit included in one or more of the two or more transmission antennas adds at least one of time delay processing and phase change processing to the transmission signal when generating a signal. The radio transceiver according to claim 2 or claim 3, characterized by the above. **Claim 5** At least one of the reception antenna signal processing unit and the reception antenna signal common processing unit included in one or more of the reception antennas among the two or more performs at least one of time delay processing and phase change processing on the reception signal when generating a signal. The wireless transceiver according to claim 1 or claim 3, characterized in that.

6. A wireless transmission / reception method in a wireless transceiver that communicates using three or more antennas including two or more physically different transmission antennas and a first reception antenna by signals in full-duplex wireless communication, A first step of generating a processed transmission antenna output signal by performing common processing on the two or more transmission antennas; A second step of selecting a transmission antenna that satisfies the required performance according to the characteristics of the signal to be transmitted and received from the two or more transmission antennas; A third step of acquiring the reception signal received by the first reception antenna and generating a processed first reception antenna signal; A fourth step of combining the processed transmission antenna output signal and the processed first reception antenna signal, and comprising: One or more of the transmission antennas among the two or more have a transmission antenna signal processing unit that acquires the transmission signal transmitted by the transmission antenna and generates a processed transmission antenna signal; The first step generates the processed transmission antenna output signal by performing the common processing on the processed transmission antenna signal generated by the transmission antenna signal processing unit. The wireless transmission / reception method, characterized in that.

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