WO2013018590A1 - Appareil de communication sans fil - Google Patents

Appareil de communication sans fil Download PDF

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Publication number
WO2013018590A1
WO2013018590A1 PCT/JP2012/068739 JP2012068739W WO2013018590A1 WO 2013018590 A1 WO2013018590 A1 WO 2013018590A1 JP 2012068739 W JP2012068739 W JP 2012068739W WO 2013018590 A1 WO2013018590 A1 WO 2013018590A1
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WO
WIPO (PCT)
Prior art keywords
wireless communication
communication unit
frequency
unit
antenna
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Application number
PCT/JP2012/068739
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English (en)
Japanese (ja)
Inventor
彰一 設楽
Original Assignee
シャープ株式会社
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Filing date
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Publication of WO2013018590A1 publication Critical patent/WO2013018590A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands

Definitions

  • the present invention relates to a wireless communication device that performs communication at a plurality of frequencies and has a small wireless communication circuit.
  • carrier aggregation (see Carrier Aggregation, Non-Patent Document 1) is used as a technique for performing simultaneous communication at a plurality of frequencies.
  • Patent Document 1 describes a wireless communication device that distributes data to a plurality of transmission units respectively corresponding to a plurality of frequencies, and matches the timing of transmitting the distributed data for each predetermined period.
  • Japanese Patent Publication Japanese Patent Laid-Open No. 2010-41687 (published on Feb. 18, 2010)”
  • the frequency that can be used in the area is set.
  • a corresponding communication circuit is further required.
  • FIG. 7 is a block diagram illustrating an example of the configuration of the wireless communication device 10 that supports carrier aggregation.
  • the wireless communication device 10 illustrated in FIG. 7 performs communication simultaneously at two different frequencies (frequency f0 and frequency f1).
  • the wireless communication device 10 includes an S / P conversion unit 102a, an IFFT unit 103a, a CP insertion unit 104a, a D / A conversion unit 105a, a frequency conversion unit 106a, and an antenna 107a.
  • S / P conversion unit 102a the wireless communication device 10 includes an S / P conversion unit 102a, an IFFT unit 103a, a CP insertion unit 104a, a D / A conversion unit 105a, a frequency conversion unit 106a, and an antenna 107a.
  • the wireless communication device 10 includes an S / P conversion unit 102b, an IFFT unit 103b, a CP insertion unit 104b, a D / A conversion unit 105b, a frequency conversion unit 106b, And an antenna 107b.
  • an S / P conversion unit When it is attempted to add a configuration for performing communication at a frequency different from the above two frequencies to the wireless communication device 10, an S / P conversion unit, an IFFT unit, a CP insertion unit, a D / A corresponding to the different frequencies.
  • Communication circuits such as a conversion unit, a frequency conversion unit, and an antenna are further required.
  • a radio communication circuit corresponding to each frequency for communication is configured in the radio communication device (wireless communication device). For this reason, the scale of the wireless communication circuit configured in the wireless communication apparatus corresponding to a plurality of frequencies is increased, and the conventional technology has problems such as an increase in the size of the wireless communication apparatus and an increase in cost.
  • the present invention has been made in view of the above problems, and a main object thereof is to realize a wireless communication device that supports a plurality of frequencies and has a small size of a wireless communication circuit.
  • the present invention provides a first and second wireless communication means for simultaneously performing wireless communication at different frequencies, and a frequency different from that of the first and second wireless communication means.
  • a third wireless communication means for performing wireless communication wherein the third wireless communication means and the first wireless communication means include an antenna provided in the first wireless communication means, and It is characterized in that at least a part of a wireless communication circuit that processes a wireless communication signal transmitted and received by an antenna is shared.
  • the first wireless communication means constituting such a wireless communication device does not perform communication, it becomes an unnecessary circuit or antenna.
  • the third wireless communication means includes a first wireless communication means that becomes unnecessary when the first wireless communication means does not perform communication, and a member that constitutes the first wireless communication means. Since at least one is shared, unnecessary circuits can be reduced.
  • the first and second wireless communication means for simultaneously performing wireless communication at mutually different frequencies, and wireless communication at a frequency different from the first and second wireless communication means.
  • the third wireless communication means, the third wireless communication means, the first wireless communication means, the antenna provided in the first wireless communication means, and the antenna By sharing at least a part of the wireless communication circuit that processes wireless communication signals to be transmitted and received, unnecessary circuits can be reduced, and the effect of realizing low cost and space saving can be achieved.
  • FIG. 1 is a block diagram showing an outline of a wireless communication device in Embodiment 1.
  • FIG. FIG. 6 is a block diagram illustrating an outline of a wireless communication device according to a second embodiment.
  • FIG. 10 is a block diagram illustrating an outline of a wireless communication device according to a third embodiment.
  • FIG. 10 is a block diagram illustrating an outline of a wireless communication device according to a fourth embodiment. It is the flowchart which showed the flow of the cell search which the radio
  • Embodiment 1 Hereinafter, it will be as follows if one Embodiment (Embodiment 1) of this invention is described with reference to FIG.
  • FIG. 1 is a block diagram illustrating an outline of a wireless communication device 1 according to the present embodiment.
  • the wireless communication device 1 includes a first wireless communication unit (first wireless communication unit) 11, a second wireless communication unit (second wireless communication unit) 13, and a third wireless communication.
  • Section (third wireless communication means) 15, modulation / demodulation processing section 16 and CPU section 17.
  • the first wireless communication unit 11 includes a circuit (wireless communication circuit) for processing to perform communication at a frequency of 2 GHz band and an antenna, and is indicated by a broken line in FIG.
  • the second wireless communication unit 13 includes a circuit (wireless communication circuit) for processing to perform communication at a frequency of 850 MHz band and an antenna, and is indicated by a dotted line in FIG.
  • the third wireless communication unit 15 includes a circuit (wireless communication circuit) for processing that performs communication at a frequency of 1.7 GHz band and an antenna, and is indicated by a one-dot chain line in FIG. Details of each wireless communication unit (high frequency unit) will be described later.
  • the modulation / demodulation processing unit 16 performs signal processing such as filtering, modulation / demodulation processing, and encoding / decoding processing.
  • the CPU unit 17 controls the entire wireless communication device 1.
  • the wireless communication device 1 performs communication at the same time using the 2 GHz band frequency used by the first wireless communication unit 11 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the first wireless communication unit 11 includes an antenna 111, a duplexer 112, a power amplifier (power amplifier) 113, a mixer (frequency converter) 114, a local transmitter (frequency converter) 115, a D / A. Converter (signal converter) 116, low noise amplifier (low noise amplifier, LNA) 117, mixer (frequency converter) 118, local transmitter (frequency converter) 119, A / D converter (signal converter) 120 , A power monitor (power measuring device) 121, a switch (switching means) 123, and a switch (switching means) 124.
  • the D / A conversion unit 116 performs digital / analog conversion on the signal modulated by the modulation / demodulation processing unit 16.
  • the local transmitter 115 generates a local frequency signal Lo.
  • the mixer 114 multiplies the local frequency signal Lo by the signal digital-analog converted by the D / A converter 116.
  • the power amplifier 113 amplifies the output signal of the mixer 114.
  • the amplified transmission signal is transmitted from the antenna 111 via the duplexer 112.
  • the received signal received from the antenna 111 is input to the low noise amplifier 117 via the duplexer 112.
  • the low noise amplifier 117 amplifies the received signal.
  • the local transmitter 119 generates a local frequency signal Lo.
  • the mixer 118 multiplies the local frequency signal Lo by the reception signal amplified by the low noise amplifier 117.
  • the A / D conversion unit 120 converts the output signal of the mixer 118 from analog to digital, and transmits the converted signal to the modulation / demodulation processing unit 16.
  • the power monitor 121 measures the transmission power from the power amplifier 113 and notifies the modulation / demodulation processing unit 16 of it.
  • the switch 123 and the switch 124 are for switching between the first wireless communication unit 11 and the third wireless communication unit 15.
  • the second wireless communication unit 13 includes an antenna 131, a duplexer 132, a power amplifier 133, a mixer 134, a local transmitter 135, a D / A conversion unit 136, a low noise amplifier 137, a mixer 138, and local transmission.
  • each member constituting the second wireless communication unit 13 performs the same operation as each member constituting the first wireless communication unit 11, description thereof is omitted.
  • the third wireless communication unit 15 includes an antenna 111, a mixer 114, a local transmitter 115, a D / A converter 116, a mixer 118, a local transmitter 119, an A / D converter 120, and a power monitor. 121, a switch 123, a switch 124, a duplexer 151, a power amplifier 152, and a low noise amplifier 153.
  • the duplexer 151, power amplifier 152, and low noise amplifier 153 perform the same operations as the duplexer 112, power amplifier 113, and low noise amplifier 117.
  • the third wireless communication unit 15 includes the first wireless communication unit 11, an antenna 111, a mixer 114, a local transmitter 115, a D / A conversion unit 116, a mixer 118, and a local transmission.
  • Machine 119, A / D converter 120 and power monitor 121 are shared.
  • the switch 123 and the switch 124 are for switching between the first wireless communication unit 11 and the third wireless communication unit 15.
  • the switch 123 and the switch 124 switch the connection destination to use the first wireless communication unit 11.
  • the switch 123 and the switch 124 switch the connection destination so that the third wireless communication unit 15 is used.
  • the switch 123 and the switch 124 can switch between the first wireless communication unit 11 and the third wireless communication unit 15 depending on the frequency used.
  • the wireless communication device 1 includes the first wireless communication unit 11 and the second wireless communication unit 13 which are separate systems, and can simultaneously perform wireless communication in different frequency bands. Thereby, for example, it is also possible to perform wireless communication in a wide band by performing carrier aggregation communication.
  • the wireless communication device 1 has been described as an example including the first wireless communication unit 11 and the second wireless communication unit 13 that perform communication at two different frequencies.
  • the wireless communication device 1 is not limited to this.
  • the wireless communication device 1 only needs to include a plurality of wireless communication circuits for processing to perform simultaneous communication at a plurality of different frequencies, and may include three or more wireless communication units capable of simultaneous communication.
  • the frequencies at which the wireless communication device 1 communicates at the same time are the 2 GHz band frequency used by the first wireless communication unit 11 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the frequency with which the wireless communication device 1 performs communication at the same time is not limited to this.
  • the wireless communication device 1 may perform simultaneous communication using the 1.7 GHz band frequency used by the third wireless communication unit 15 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the frequency with which the wireless communication device 1 communicates is not limited to the 2 GHz band, the 1.7 GHz band, and the 850 MHz band. These numerical values are examples, and other frequencies may be used.
  • the third wireless communication unit 15 includes the first wireless communication unit 11, the antenna 111, the mixer 114, the local transmitter 115, the D / A conversion unit 116, the mixer 118, the local transmitter 119, and the A / D conversion. Although the description has been given taking the example in which the unit 120 and the power monitor 121 are shared, the member shared by the third wireless communication unit 15 and the first wireless communication unit 11 is not limited to this.
  • the third wireless communication unit 15 may be configured to share at least one of the above members, or may be configured to share each in combination.
  • the first wireless communication unit 11 and the second wireless communication unit 13 for processing for performing simultaneous communication at a plurality of frequencies are different from the plurality of frequencies.
  • the wireless communication device 1 including the third wireless communication unit 15 that performs communication at a frequency (additional frequency) the third wireless communication unit 15 and the first wireless communication unit 11 are the first wireless communication unit 11. Is shared by at least one of members (members constituting the third wireless communication unit 15).
  • the third wireless communication unit 15 shares at least one of the members constituting the circuit with the wireless communication unit that becomes unnecessary when communication is not performed at the plurality of frequencies. Can be reduced.
  • the first wireless communication unit 11 performs communication at a frequency of 2 GHz band
  • the second wireless communication unit 13 performs communication at a frequency of 850 MHz band.
  • the frequency of the 1.7 GHz band with which the third wireless communication unit 15 performs communication is compared with the difference between the above frequencies, the frequency of the 2 GHz band used by the first wireless communication unit 11 becomes smaller.
  • the third wireless communication unit 15 has a difference between the frequency used by the first wireless communication unit 11 and the second wireless communication unit 13 and the frequency used by the third wireless communication unit 15. It is preferable to share at least one of the members constituting the first wireless communication unit 11 and the first wireless communication unit 11 that performs communication at a smaller frequency.
  • one device for example, the first wireless communication unit 11 and the third wireless communication unit 15 including the antenna 111
  • the frequency band that can be used in order to support a plurality of frequencies
  • it corresponds.
  • it is better to create a device for each frequency band.
  • a wireless communication device provided with a device corresponding to each frequency band has a problem that it is difficult to reduce the size because the number of components increases.
  • the uniformity of the device performance within the frequency band may be deteriorated.
  • the frequency band that can be used by one device can be narrowed (for example, in the case of the first wireless communication unit 11 and the third wireless communication unit 15, 1.5 GHz band to 2 GHz band) ), It is possible to prevent deterioration in uniformity of the gain performance of the device.
  • the design of the wireless communication circuit can be facilitated, so that the area of the wireless communication circuit can be reduced and downsizing can be realized.
  • each member for example, an antenna, a local transmitter, a power amplifier, etc.
  • power consumption, cost, etc. can be reduced.
  • the antenna is shared between the radio communication units having the frequencies close to each other, a plurality of antennas having the frequencies close to each other are not provided, and deterioration of antenna characteristics due to coupling between the antennas can be suppressed.
  • FIG. 2 is a block diagram showing an outline of the wireless communication device 2 in the present embodiment.
  • the wireless communication device 2 includes a first wireless communication unit 11, a third wireless communication unit 15, a modulation / demodulation processing unit 16, a CPU unit 17, a second wireless communication unit (second wireless communication unit). Means) 21 and a fourth wireless communication unit (fourth wireless communication means) 23.
  • the first wireless communication unit 11 is composed of a circuit and an antenna for processing to communicate at a frequency of 2 GHz band, and is indicated by a broken line in FIG.
  • the third wireless communication unit 15 includes a circuit and an antenna for processing that performs communication at a frequency of 1.7 GHz, and is indicated by a one-dot chain line in FIG.
  • the second wireless communication unit 21 includes a circuit and an antenna for processing to perform communication at a frequency of 850 MHz band, and is indicated by a dotted line in FIG.
  • the fourth wireless communication unit 23 includes a circuit and an antenna for processing for performing communication at a frequency of 700 MHz, and is indicated by a two-dot chain line in FIG.
  • the wireless communication device 2 communicates simultaneously with the frequency of the 2 GHz band used by the first wireless communication unit 11 and the frequency of the 850 MHz band used by the second wireless communication unit 21.
  • the second wireless communication unit 21 includes an antenna 211, a duplexer 212, a power amplifier 213, a mixer 214, a local transmitter 215, a D / A conversion unit 216, a low noise amplifier 217, a mixer 218, and a local transmission.
  • each member constituting the second wireless communication unit 21 performs the same operation as each of the members constituting the first wireless communication unit 11 described above, description thereof is omitted.
  • the fourth wireless communication unit 23 includes an antenna 211, a mixer 214, a local transmitter 215, a D / A converter 216, a mixer 218, a local transmitter 219, an A / D converter 220, and a power monitor. 221, a switch 223, a switch 224, a duplexer 231, a power amplifier 232, and a low noise amplifier 233.
  • the duplexer 231, the power amplifier 232, and the low noise amplifier 233 perform the same operations as the duplexer 112, the power amplifier 113, and the low noise amplifier 117.
  • the fourth wireless communication unit 23 includes the second wireless communication unit 21, the antenna 211, the mixer 214, the local transmitter 215, the D / A conversion unit 216, the mixer 218, and the local transmission.
  • Machine 219, A / D converter 220 and power monitor 221 are shared.
  • the switch 223 and the switch 224 are for switching between the second wireless communication unit 21 and the fourth wireless communication unit 23.
  • the switch 223 and the switch 224 switch the connection destination so that the second wireless communication unit 21 is used.
  • the switch 223 and the switch 224 switch the connection destination so that the fourth wireless communication unit 23 is used. In this way, the switch 223 and the switch 224 can switch between the second wireless communication unit 21 and the fourth wireless communication unit 23 depending on the frequency used.
  • the wireless communication device 2 has been described as an example in which the wireless communication device 2 includes the first wireless communication unit 11 and the second wireless communication unit 21 that perform communication at two different frequencies at the same time.
  • the wireless communication device 2 is not limited to this.
  • the wireless communication device 2 can include a plurality of wireless communication units for processing to simultaneously perform communication at a plurality of different frequencies.
  • each of a plurality of wireless communication units for performing simultaneous communication at a plurality of frequencies and two wireless communication units sharing a member constituting the wireless communication unit (the third wireless communication unit in FIG. 2) 15 and the fourth wireless communication unit 23) have been described as an example, but the number of such wireless communication units is not limited.
  • the wireless communication device 2 includes a plurality of switches in order to switch between using each of the plurality of wireless communication units for performing simultaneous communication at a plurality of frequencies and each of the other wireless communication units. You may have. Thereby, it is possible to switch between using each of the plurality of wireless communication units and each of the other wireless communication units depending on the frequency to be used.
  • the frequencies at which the wireless communication device 2 communicates simultaneously are the 2 GHz band frequency used by the first wireless communication unit 11 and the 850 MHz band frequency used by the second wireless communication unit 21.
  • the frequency with which the wireless communication device 2 communicates simultaneously is not limited to this.
  • the wireless communication device 2 may perform simultaneous communication using the 1.7 GHz band frequency used by the third wireless communication unit 15 and the 850 MHz band frequency used by the second wireless communication unit 21.
  • the wireless communication device 2 may perform simultaneous communication using the 2 GHz band frequency used by the first wireless communication unit 11 and the 700 MHz band frequency used by the fourth wireless communication unit 23.
  • the wireless communication device 2 may perform simultaneous communication using the 1.7 GHz band frequency used by the third wireless communication unit 15 and the 700 MHz band frequency used by the fourth wireless communication unit 23.
  • the frequency at which the wireless communication device 2 communicates is not limited to the 2 GHz band, the 1.7 GHz band, the 850 MHz band, and the 700 MHz band. These numerical values are examples, and other frequencies may be used.
  • the fourth wireless communication unit 23 includes the second wireless communication unit 21, the antenna 211, the mixer 214, the local transmitter 215, the D / A conversion unit 216, the mixer 218, the local transmitter 219, and the A / D conversion. Although description has been given by taking an example in which the unit 220 and the power monitor 221 are shared, the member shared by the fourth wireless communication unit 23 and the second wireless communication unit 21 is not limited to this.
  • the fourth wireless communication unit 23 may be configured to share at least one of the above members, or may be configured to share each in combination.
  • the third wireless communication unit 15 and the fourth wireless communication unit 15 perform communication at frequencies different from the plurality of frequencies used by the first wireless communication unit 11 and the second wireless communication unit 21.
  • the wireless communication device 2 including the wireless communication unit 23 the third wireless communication unit 15 and the fourth wireless communication unit 23 are respectively connected to the first wireless communication unit 11 and the second wireless communication unit 21, respectively.
  • the wireless communication units different from each other share at least one of the members constituting the wireless communication unit.
  • the size and cost of the wireless communication device 2 are greatly increased.
  • the frequency that can be used by the wireless communication device 2 can be increased without increasing the frequency.
  • the fourth wireless communication unit 23 is configured so that the frequency used by the first wireless communication unit 11 and the second wireless communication unit 21 and the frequency used by the fourth wireless communication unit 23 are the same. It is preferable to share at least one of the members constituting the second wireless communication unit 21 and the second wireless communication unit 21 that performs communication at a frequency at which the difference becomes small.
  • the antenna 111, the mixer 114, the local transmitter 115, the D / A converter 116, the mixer 118, the local transmitter 119, the A / D converter 120, and the power monitor 121 are members shared by the wireless communication unit.
  • the shared member is not limited to this.
  • FIG. 3 is a block diagram showing an outline of the wireless communication device 3 in the present embodiment.
  • the wireless communication device 3 includes a first wireless communication unit 11, a second wireless communication unit 13, a modulation / demodulation processing unit 16, a CPU unit 17, and a third wireless communication unit 31.
  • the first wireless communication unit 11 is composed of a circuit and an antenna for processing to perform communication at a frequency of 2 GHz band, and is indicated by a broken line in FIG.
  • the second wireless communication unit 13 includes a circuit and an antenna for processing that performs communication at a frequency of 850 MHz, and is indicated by a dotted line in FIG.
  • the third wireless communication unit 31 includes a circuit and an antenna for processing that performs communication at a frequency of 1.7 GHz, and is indicated by a one-dot chain line in FIG.
  • the wireless communication device 3 performs simultaneous communication using the 2 GHz band frequency used by the first wireless communication unit 11 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the third wireless communication unit 31 includes an antenna 111, a power amplifier 113, a mixer 114, a local transmitter 115, a D / A conversion unit 116, a mixer 118, a local transmitter 119, and an A / D conversion unit. 120, a power monitor 121, a switch 123, a switch 125, a switch 126, a duplexer 311 and a low noise amplifier 312.
  • the duplexer 311 and the low noise amplifier 312 perform the same operations as the duplexer 112 and the low noise amplifier 117.
  • the third wireless communication unit 31 includes the first wireless communication unit 11, an antenna 111, a power amplifier 113, a mixer 114, a local transmitter 115, a D / A conversion unit 116, and a mixer. 118, the local transmitter 119, the A / D converter 120, and the power monitor 121 are shared.
  • the frequencies at which the wireless communication device 3 communicates at the same time are the 2 GHz band frequency used by the first wireless communication unit 11 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the frequency with which the wireless communication device 3 communicates simultaneously is not limited to this.
  • the wireless communication device 3 may perform simultaneous communication using the 1.7 GHz band frequency used by the third wireless communication unit 31 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the frequency with which the wireless communication device 3 communicates is not limited to the 2 GHz band, the 1.7 GHz band, and the 850 MHz band. These numerical values are examples, and other frequencies may be used.
  • the third wireless communication unit 31 includes the first wireless communication unit 11 and the antenna 111, the mixer 114, the local transmitter 115, the D / A conversion unit 116, the mixer 118, the local In addition to the transmitter 119, the A / D converter 120, and the power monitor 121, the power amplifier 113 can be shared. Thereby, further cost reduction and space saving can be realized.
  • the wireless communication unit sharing the power amplifier is described as an example of the first wireless communication unit 11 performing communication at a frequency of 2 GHz band.
  • the circuit sharing the power amplifier is described. Is not limited to this.
  • the second wireless communication unit 21 and the fourth wireless communication unit 23 in FIG. 2 may share the power amplifier.
  • FIG. 4 is a block diagram showing an outline of the wireless communication device 4 in the present embodiment.
  • the wireless communication device 4 includes a first wireless communication unit 11, a second wireless communication unit 13, a modulation / demodulation processing unit 16, a CPU unit 17, and a third wireless communication unit 41.
  • the third wireless communication unit 41 performs communication using a TDD (Time Division Duplexing) method.
  • TDD Time Division Duplexing
  • the first wireless communication unit 11 is a circuit for processing to perform communication at a frequency of 2 GHz band, and is indicated by a broken line in FIG.
  • the second wireless communication unit 13 is a circuit for processing to perform communication at a frequency of 850 MHz band, and is indicated by a dotted line in FIG.
  • the third wireless communication unit 41 is a circuit for processing to perform communication at a frequency of 1.5 GHz band, and is indicated by a one-dot chain line in FIG.
  • the wireless communication device 4 performs simultaneous communication using the 2 GHz band frequency used by the first wireless communication unit 11 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the third wireless communication unit 41 includes an antenna 111, a mixer 114, a local transmitter 115, a D / A converter 116, a mixer 118, a local transmitter 119, an A / D converter 120, and a power monitor. 121, a switch 127, a switch 128, a power amplifier 411, and a low noise amplifier 412.
  • the power amplifier 411 and the low noise amplifier 412 perform the same operations as the power amplifier 113 and the low noise amplifier 117.
  • the third wireless communication unit 41 includes the first wireless communication unit 11, the antenna 111, the mixer 114, the local transmitter 115, the D / A conversion unit 116, the mixer 118, and the local transmission.
  • Machine 119, A / D converter 120 and power monitor 121 are shared.
  • the frequencies at which the wireless communication device 4 communicates at the same time are the 2 GHz band frequency used by the first wireless communication unit 11 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the frequency with which the wireless communication device 4 communicates simultaneously is not limited to this.
  • the wireless communication device 4 may perform simultaneous communication using the 1.5 GHz band frequency used by the third wireless communication unit 41 and the 850 MHz band frequency used by the second wireless communication unit 13.
  • the frequency with which the wireless communication device 4 communicates is not limited to the 2 GHz band, 1.5 GHz band, and 850 MHz band. These numerical values are examples, and other frequencies may be used.
  • the first wireless communication unit 11 and at least one member constituting the first wireless communication unit 11 may be shared. it can.
  • the wireless communication unit that performs communication by the TDD method has been described as an example of the third wireless communication unit 41 that performs communication at a frequency of 1.5 GHz band.
  • the wireless communication unit that performs communication with is not limited to this.
  • the fourth wireless communication unit 23 in FIG. 2 may perform communication using the TDD method.
  • FIG. 5 is a flowchart showing a cell search flow executed by the wireless communication devices 1 to 4.
  • the cell search is to select a cell that minimizes the propagation loss between the base station and the wireless communication device.
  • the wireless communication device 2 is described as an example, but the wireless communication device that performs cell search is not limited to this.
  • the wireless communication device 2 is turned on (step S51, hereinafter simply referred to as S51), and the first wireless communication unit 11 and the third wireless communication unit 15 (referred to as group (1)).
  • the cell search is sequentially executed at each of the frequencies (bands) used by S (S52).
  • the cell search is sequentially executed at each of the frequencies used by the second radio communication unit 21 and the fourth radio communication unit 23 (referred to as group (2)) (S53).
  • the wireless communication device determines the frequency to be connected from the reception quality of each frequency of S52 and S53 (S54). Thereafter, the wireless communication device connects to the base station at each of the selected frequencies (S55).
  • FIG. 6 illustrates handover during simultaneous communication (during carrier aggregation) at a plurality of frequencies in a wireless communication device.
  • FIG. 6 is a flowchart showing a flow of handover during carrier aggregation in the wireless communication device.
  • the wireless communication device stops carrier aggregation before executing the handover (S61). Thereafter, a search is made for neighboring base stations in each band of the hand group performing the handover (S62). Thereafter, the wireless communication device determines a handover destination base station from the search result of S62 (S63).
  • the wireless communication device performs handover to the base station determined in S63 (S64), and starts carrier aggregation again (S65).
  • the wireless communication devices 1 to 4 may execute cell search and handover according to such a flow.
  • the first and second wireless communication means for simultaneously performing wireless communication at mutually different frequencies and the wireless communication at different frequencies from the first and second wireless communication means.
  • a third wireless communication means for the first wireless communication means, and the third wireless communication means and the first wireless communication means transmit and receive the antenna provided in the first wireless communication means and the antenna. It is characterized in that at least a part of a wireless communication circuit that processes a wireless communication signal is shared.
  • the first wireless communication means constituting such a wireless communication device does not perform communication, it becomes an unnecessary circuit or antenna.
  • the third wireless communication means includes a first wireless communication means that becomes unnecessary when the first wireless communication means does not perform communication, and a member that constitutes the first wireless communication means. Since at least one is shared, unnecessary circuits can be reduced.
  • the first wireless communication unit has a frequency at which wireless communication is performed closest to the third wireless communication unit.
  • the frequency band that can be used to support multiple frequencies is widened with one device (for example, multiple wireless communication circuits sharing one antenna), a device is created for each corresponding frequency band. In many cases, the performance is better.
  • a wireless communication device provided with a device corresponding to each frequency band has a problem that it is difficult to reduce the size because the number of components increases.
  • the uniformity of the device performance within the frequency band may be deteriorated.
  • the frequency band that can be used by one device can be narrowed, it is possible to prevent deterioration in uniformity of the gain performance of the device.
  • the design of the wireless communication unit can be facilitated, so that the area of the wireless communication unit can be reduced and downsizing can be realized.
  • the members composing the wireless communication circuit are shared between the wireless communication circuits having similar usable frequencies, the design of each member becomes easy. Moreover, power consumption, cost, etc. can be reduced.
  • an antenna is shared between wireless communication means having close frequencies to be used, a plurality of antennas having close frequencies are not provided, and deterioration of antenna characteristics due to coupling between antennas can be suppressed.
  • the third wireless communication unit and the first wireless communication unit may share the antenna.
  • the wireless communication circuit includes a signal converter that converts the wireless communication signal from digital to analog, and the third wireless communication unit and the first wireless communication unit share the signal converter. It may be.
  • the wireless communication circuit includes a frequency converter that generates a local frequency signal and multiplies the generated local frequency signal by the wireless communication signal, and the third wireless communication unit and the first wireless communication circuit are provided.
  • the communication means may share the frequency converter.
  • the wireless communication circuit includes a power measuring device that measures the power of the wireless communication signal, and the third wireless communication unit and the first wireless communication unit share the power measuring device. It may be.
  • the wireless communication circuit includes a power amplifier that amplifies the power of the wireless communication signal, and the third wireless communication unit and the first wireless communication unit share the power amplifier. Also good.
  • the wireless communication device in the present invention may perform carrier aggregation communication by the first and second wireless communication means.
  • carrier aggregation communication can be performed by effectively using the first and second wireless communication means.
  • the wireless communication device may perform wireless communication by a TDD (Time Division Duplexing) method using the third wireless communication unit.
  • TDD Time Division Duplexing
  • the third wireless communication unit that performs communication by the TDD method shares at least one of the first wireless communication unit and the members constituting the first wireless communication unit. can do.
  • the wireless communication device may include switching means for switching which of the first wireless communication means and the third wireless communication means is used.
  • the switching unit switches between using each of the first and second wireless communication units and each of the plurality of third wireless communication units depending on the frequency to be used. Can do.
  • the wireless communication device further includes fourth wireless communication means for performing wireless communication at a frequency different from that of the first, second, and third wireless communication means.
  • the wireless communication means share at least a part of the wireless communication means different from the first and second wireless communication means, and the antenna and the wireless communication circuit included in the wireless communication means. May be.
  • the first or second wireless communication unit shares the member with the fourth wireless communication unit, and further, without significantly increasing the size, cost, etc. of the wireless communication device, The frequency that can be used by the wireless communication device can be increased.
  • the present invention can be suitably used in the field of manufacturing wireless communication devices that perform communication at a plurality of frequencies.
  • First wireless communication unit (first wireless communication means) 111 Antenna 112 Duplexer 113 Power Amplifier (Power Amplifier) 114 Mixer (frequency converter) 115 Local transmitter (frequency converter) 116 D / A converter (signal converter) 117 Low noise amplifier (low noise amplifier) 118 Mixer (frequency converter) 119 Local transmitter (frequency converter) 120 A / D converter (signal converter) 121 Power monitor 123 switch (switching means) 124 switch (switching means) 125 switch (switching means) 126 switch (switching means) 127 switch (switching means) 128 switches (switching means) 13, 21 Second wireless communication unit (second wireless communication means) 131, 211 Antenna 132, 212 Duplexer 133, 213 Power amplifier (power amplifier) 134, 214 Mixer (frequency converter) 135, 215 Local transmitter (frequency converter) 136, 216 D / A converter (signal converter) 137, 217 Low noise amplifier (Low noise amplifier

Abstract

La présente invention porte sur un appareil de communication sans fil (1) qui est équipé de : une première unité de communication sans fil (11) et une deuxième unité de communication sans fil(13) qui exécutent une communication sans fil simultanément, et une troisième unité de communication sans fil (15) qui exécute une communication sans fil. La troisième unité de communication sans fil (15) et la première unité de communication sans fil (11) partageant une antenne (111) et/ou une partie d'un circuit de communication sans fil qui traite des signaux de communication sans fil destinés à être transmis à partir de et reçus par l'antenne (111).
PCT/JP2012/068739 2011-07-29 2012-07-24 Appareil de communication sans fil WO2013018590A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011167729A JP2013031135A (ja) 2011-07-29 2011-07-29 無線通信機器
JP2011-167729 2011-07-29

Publications (1)

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WO2013018590A1 true WO2013018590A1 (fr) 2013-02-07

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WO (1) WO2013018590A1 (fr)

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WO2015008557A1 (fr) 2013-07-16 2015-01-22 株式会社村田製作所 Circuit frontal
CN105637770B (zh) 2013-10-16 2018-07-10 株式会社村田制作所 收发装置
US20150155891A1 (en) * 2013-12-03 2015-06-04 Qualcomm Incorporated Dual mode wwan and wlan transceiver systems and methods
JP6954186B2 (ja) * 2018-03-05 2021-10-27 株式会社村田製作所 フィルタ装置、高周波フロントエンド回路および通信装置

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JP2009290897A (ja) * 2006-01-17 2009-12-10 Hitachi Metals Ltd 高周波回路部品及びこれを用いた通信装置
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JP2009290897A (ja) * 2006-01-17 2009-12-10 Hitachi Metals Ltd 高周波回路部品及びこれを用いた通信装置
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