WO2006112255A1 - Wireless communication terminal device and transmission system switching method - Google Patents
Wireless communication terminal device and transmission system switching method Download PDFInfo
- Publication number
- WO2006112255A1 WO2006112255A1 PCT/JP2006/306915 JP2006306915W WO2006112255A1 WO 2006112255 A1 WO2006112255 A1 WO 2006112255A1 JP 2006306915 W JP2006306915 W JP 2006306915W WO 2006112255 A1 WO2006112255 A1 WO 2006112255A1
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- WO
- WIPO (PCT)
- Prior art keywords
- antenna element
- antenna
- mobile phone
- battery pack
- communication terminal
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
Definitions
- the present invention relates to a wireless communication terminal device that can be directly attached to an external device and a transmission method switching method for the wireless communication terminal device.
- MIMO Multi Input Multi Output
- AAA Adaptive Array Antenna
- MIMO is a transmission method that uses an array antenna for both transmission and reception, and enables high-speed communication by space division multiplexing and space-time coding.
- AAA also enables high-speed communication by suppressing interference waves by performing beamforming control and null steering control. Both transmission methods require a plurality of antenna elements (see Non-Patent Document 1, for example).
- FIG. 1 is a perspective view showing a connection state between a conventional external antenna and a mobile phone.
- the external antenna 1 is an array antenna in which a plurality of antennas are placed upright at the center and periphery of a disk-shaped pedestal.
- the external antenna 1 is connected to the mobile phone 3 by a coaxial cable 2.
- Communication quality is maintained by controlling the directivity of the external antenna 1 by using the external antenna 1 as a variable directivity antenna and performing beam forming control and null steering control.
- FIG. 2 is a perspective view of a conventional battery pack built-in antenna. Unbalanced supply to battery pack 20 The electric antenna 21 and the antenna ground wire 22 are provided, and the radiation current of the antenna 21 is passed through the antenna ground wire 21 to the ground of the battery pack 20. With this configuration, it is possible to reduce the antenna radiation gain when the portable telephone case is held in the hand.
- FIG. 3 is a configuration diagram showing an outline of a conventional charger with an antenna.
- the charger 30 includes a mobile phone fixing part 31 for fixing the mobile phone 40, a power connector 32 for charging the battery of the mobile phone 40, and an antenna connector 34 for connecting an external antenna 33. Then, the charger 30 becomes a charger with an antenna by connecting the external antenna 33 via the antenna connector 34.
- the cellular phone 40 has a switch 42 that switches the built-in antenna element 41 to the external antenna 33.
- the external antenna 33 is installed on the roof of a building or near a window, and is coupled to an antenna connector 34 connected by a cable 35.
- the combination notification unit 36 notifies the combination detection unit 43 of a combination signal when the mobile phone 40 is fixed to the charger 30 and is being charged. By this notification, the switch 42 is controlled, and the connection with the radio circuit 44 is switched from the built-in antenna element 41 to the external antenna 33.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-280942 (Page 6, Fig. 1)
- Patent Document 2 JP 2000-13119 (2nd page, Fig. 3)
- Patent Document 3 Japanese Unexamined Patent Publication No. 2001-168982 (Page 3, Figure 1)
- Non-Patent Document 1 Nakajima, “New Generation Wireless Technology” Maruzen, March 25, 2004, Chapter 3, Chapter 4, P. 70-187
- An object of the present invention is to provide a wireless communication terminal apparatus capable of reducing deterioration of wireless characteristics and performing high-speed communication when performing communication using an external antenna.
- the wireless communication terminal device of the present invention is a wireless communication terminal device to which an external device can be directly attached, the detection means for detecting whether or not the attached external device has an antenna element, Switching means for switching from a transmission method using only the antenna element of the wireless communication terminal device to a transmission method using the antenna element and the antenna element of the external device when it is detected that the external device has an antenna element.
- the structure to be adopted is adopted.
- the switching means when the detection means detects that the external device has an antenna element, the switching means is connected to the antenna element of the wireless communication terminal device and the external device directly attached to the wireless communication terminal device. By switching to a transmission system that uses this antenna element, it is possible to reduce deterioration of radio characteristics and perform high-speed communication.
- FIG. 1 is a perspective view of a conventional external antenna and a mobile phone.
- FIG. 4 is a perspective view of the mobile phone according to Embodiment 1 of the present invention.
- FIG. 5 is a block diagram showing an example of the configuration of the mobile phone and the battery pack according to Embodiment 1 of the present invention.
- FIG. 6 is a perspective view of a folding type mobile phone according to the first embodiment of the present invention.
- FIG. 7 is a perspective view of a mobile phone according to Embodiment 2 of the present invention.
- FIG. 8 is a block diagram showing an example of the configuration of a mobile phone and a charger according to Embodiment 2 of the present invention.
- FIG. 9 is a perspective view of a mobile phone according to Embodiment 3 of the present invention.
- FIG. 10 is a block diagram showing an example of the configuration of a mobile phone and a battery pack according to Embodiment 3 of the present invention.
- FIG. 11 is a perspective view of a folding type mobile phone according to the third embodiment of the present invention.
- FIG. 12 is a perspective view of a mobile phone according to Embodiment 4 of the present invention.
- FIG. 13 is a block diagram showing an example of the configuration of the mobile phone and the charger in the fourth embodiment of the present invention.
- FIG. 4 is a perspective view of mobile phone 100 that is an example of the wireless communication terminal device according to the first embodiment of the present invention.
- This mobile phone 100 is equipped with a removable external device.
- a battery pack is used as a specific example of the external device.
- FIG. 4 shows a state where the radio base station 200 and the mobile phone 100 perform low speed communication and high speed communication.
- the mobile phone 100 determines that the battery pack 150 does not have an antenna element, Communication with radio base station apparatus 200 (hereinafter referred to as a base station) is assumed to be single antenna transmission.
- the mobile phone 100 performs communication using only the antenna element 101 provided in advance in the mobile phone 100.
- the mobile phone 100 and the base station 200 are in a state of performing low-speed communication.
- mobile phone 100 determines that this battery pack 160 has antenna element 161, and wireless Switch communication with base station device 200 to multi-antenna transmission using antenna element 161 of battery pack 160. That is, the mobile phone 100 has the antenna element 161. Multi-antenna transmission by detecting that the built-in battery pack 160 is installed and switching to the communication mode using the antenna element 161 of the battery pack 160 with built-in antenna in addition to the antenna element 101 provided in the mobile phone 100 in advance. Is realized. In this case, as compared with FIG. 4A, the mobile phone 100 and the base station 200 are in a state of performing high-speed communication.
- FIG. 5 is a block diagram showing an example of the configuration of the mobile phone 100 and the battery pack directly attached to the mobile phone 100 in the present embodiment.
- a cellular phone 100 shown in FIG. 5 includes an antenna element 101, an RF (radio frequency) processing unit 102 that up-converts and down-converts a signal, and a BB (baseband) signal processing unit 103 that performs digital modulation / demodulation.
- a control unit 105 that controls the operation of the mobile phone 101, a power source unit 106, and an electrode 107.
- the antenna element 101 receives a radio signal transmitted from the base station 200 and outputs it to the RF processing unit 102. Further, antenna element 101 transmits a signal subjected to predetermined radio processing by RF processing section 102 to base station 200.
- the RF processing unit 102 performs predetermined radio processing such as down-conversion on the received signal input from the antenna element 101, converts the frequency to a radio band power baseband signal, and outputs the signal to the BB signal processing unit 103. Output.
- the RF processing unit 102 also performs predetermined radio processing such as up-conversion on the modulated signal input from the BB signal processing unit 103, converts the frequency into a baseband band power radio band signal, and outputs the signal to the antenna element 101. To do.
- the BB signal processing unit 103 performs AZD (analog-digital) conversion processing, demodulation processing, and decoding processing on the signal subjected to radio processing by the RF processing unit 102, and acquires received data. Further, the BB signal processing unit 103 performs encoding processing, modulation processing, and DZA (digital analog) conversion processing on the transmission data, and outputs them to the RF processing unit 102.
- AZD analog-digital conversion processing
- the connector 104 is connected to a connector on the external device side such as a battery pack.
- the connector 104 detects the attachment of the external device and outputs the detection result to the BB signal processing unit 103.
- the connector 104 has a BB signal
- the baseband signal from the processing unit 103 is output to the attached external device.
- the control unit 105 controls each unit of the mobile phone 100 such as the BB signal processing unit 103 and the power supply unit 106.
- the power supply unit 106 outputs the power acquired through the electrode 107 to the control unit 105.
- the electrode 107 outputs power from the power supply of the external device to the power supply unit 106 by connecting to the external device such as a battery pack.
- the BB signal processing unit 103 includes a detection unit 108, a switching unit 109, a single antenna modulation / demodulation unit 110, and a multi-antenna modulation / demodulation unit 111.
- the detection unit 108 detects whether or not the external device attached to the mobile phone 100 via the connector 104 has a antenna element, and outputs the detection result to the switching unit 109. Specifically, when the external device does not have an antenna element, the detection unit 108 instructs the switching unit 109 to switch to the single antenna transmission mode, that is, the transmission method using only the own antenna element. In addition, when the external device has an antenna element, the detection unit 108 instructs the switching unit 109 to switch to the multi-antenna transmission mode, that is, the transmission method using the antenna element of the own device and the antenna element of the external device. .
- Switching section 109 switches the connection destination with RF processing section 102 to single antenna modulation / demodulation section 110 or multi-antenna modulation / demodulation section 111 according to the detection result from detection section 108. Specifically, switching section 109 switches the connection destination to single antenna modulation / demodulation section 110 if the detection result is a single antenna transmission mode, and switches the connection destination to multi antenna modulation / demodulation section 111 if the detection result is a multi-antenna transmission mode. Switch to.
- Single antenna modulation / demodulation section 110 performs encoding processing on the transmission signal, modulates the signal after encoding to generate a modulation signal, performs DZA conversion on this modulation signal, and performs RF processing.
- the data is output to the processing unit 102.
- the single antenna modulation / demodulation unit 110 performs AZD conversion on the received signal from the RF processing unit 102, performs demodulation processing on the digital signal to generate a demodulated signal, and performs decoding processing on the demodulated signal to receive the received data. get.
- the multi-antenna modulation / demodulation unit 111 performs processing such as space-time coding and space-time decoding for MIMO transmission, for example. That is, the multi-antenna modulation / demodulation unit 111 performs space-time coding processing on the transmission signal, and performs modulation processing on the signal after space-time coding, thereby modulating the modulated signal. Is generated, and the modulated signal is DZA converted and output to the RF processing unit 102.
- the multi-antenna modulation / demodulation unit 111 performs AZD conversion on the received signal from the RF processing unit 102, performs demodulation processing on the digital signal, generates a demodulation signal, and performs space-time decoding processing on the demodulated signal. Get received data.
- the battery pack 150 includes a battery 151 and an electrode 152.
- the battery 151 supplies power necessary for each unit of the mobile phone 100 to perform processing.
- the electrode 152 is connected to the electrode 107 on the mobile phone 100 side and supplies power from the battery 151 to the mobile phone 100.
- battery pack 160 further includes antenna element 161, RF processing section 162, and connector 163 in addition to battery 151 and electrode 152.
- the antenna element 161 receives a radio signal transmitted from the base station 200 and outputs it to the RF processing unit 162. Further, the antenna element 161 transmits a signal subjected to predetermined radio processing by the RF processing unit 162 to the base station 200.
- the RF processing unit 162 performs predetermined radio processing such as down-conversion on the reception signal input from the antenna 161, converts the frequency to a radio band power baseband signal, and outputs the signal to the connector 163. Further, the RF processing unit 162 performs predetermined radio processing such as up-conversion on the baseband signal input from the mobile phone 100, converts the baseband signal into a radio band signal, and outputs the signal to the antenna element 161.
- Connector 163 is connected to connector 104 on mobile phone 100 side. When battery pack 160 is attached to mobile phone 100, connector 163 outputs a baseband signal from RF processing unit 162 to connector 104. Connector 163 outputs a baseband signal input to mobile phone 100 to RF processing unit 162.
- the detection unit 108 detects the baseband from the battery pack 150 via the connector 104. Since the signal cannot be detected, it is determined that the battery pack 150 has an antenna element! In this case, since the switching unit 109 does not switch the transmission method, the control unit 1 05 instructs the BB signal processing unit 103 to perform the digital modulation / demodulation processing in the single antenna transmission mode using only the antenna element 101 preliminarily provided in the mobile phone 100.
- the single antenna modulation / demodulation unit 110 of the BB signal processing unit 103 performs encoding processing and modulation processing during transmission, performs demodulation processing and decoding processing during reception, and the RF processing unit 102 performs predetermined radio processing. Communication is performed using only the antenna element 101 that is preferentially provided in the mobile phone 100.
- the battery 151 of the battery pack 150 supplies power to the mobile phone 100 via the electrode 152. Then, the power supply unit 106 of the mobile phone 100 acquires power through the electrode 107. The power supply unit 106 supplies the acquired power to each unit via the control unit 105.
- detection unit 108 can detect a baseband signal from battery pack 160 via connector 104. Therefore, it is determined that the battery pack 160 has the antenna element 161.
- the detection unit 108 controls the switching unit 109 to switch the transmission method to the multi-antenna transmission mode using the antenna element 101 of the own device and the antenna element 161 of the battery pack 160.
- the received signal input from the external antenna element 161 of the battery pack 160 is subjected to predetermined radio processing by the RF unit 162 and converted into a baseband signal. This baseband signal is sent to the connector 163. Via the mobile phone 100.
- the detection unit 108 of the mobile phone 100 receives the baseband signal from the battery pack 160 via the connector 104, thereby determining that the battery pack 160 has the antenna element 161, and the switching unit 109 is a single unit. Control to switch the transmission method from the antenna transmission mode to the multi-antenna transmission mode. The switching unit 109 then switches the transmission method power using only the antenna element 101 of the mobile phone 100 to the transmission method using the antenna element 101 of the mobile phone 100 and the antenna element 161 of the battery pack 160 according to the instruction from the detection unit 108. .
- control unit 105 detects that the battery pack 160 is attached to the mobile phone 100 via the connector 104 and the BB signal processing unit 103, and multi-controls the BB signal processing unit 103. A command is issued to perform digital modulation / demodulation processing in the antenna transmission mode. Then, the mobile phone 100 includes the antenna element 101 and the battery pack that are preferentially provided in the mobile device 100. Communication is performed using the external antenna element 161 of the link 160.
- MIMO transmission will be described as an example of a multi-antenna transmission mode that mobile phone 100 switches when battery pack 160 having antenna element 161 is attached.
- the multi-antenna modulation / demodulation unit 111 performs the MIMO transmission processing, Telephone 100 notifies base station 200 of control information indicating that preparation for MIMO transmission is complete.
- base station 200 performs space-time code processing within it and performs MIMO transmission using a plurality of antenna elements.
- the mobile phone 100 uses the antenna element 101 provided in advance in the mobile phone 100 and the external antenna of the battery pack 160 attached to the transmission signal independently transmitted from the base station 200 using a plurality of antenna elements.
- a signal received by MIMO is subjected to matrix calculation in multi-antenna modulation / demodulation section 111 and separated into signals for each transmission antenna, and subjected to space-time decoding processing to be received data.
- multi-antenna modulation / demodulation section 111 performs space-time code processing on transmission data, and externally attaches antenna element 101 and battery pack 160 that are preliminarily provided in mobile phone 100. Use antenna element 161 to transmit MIMO.
- Base station 200 separates a transmission signal transmitted by MIMO from mobile phone 100 into a signal for each antenna, and decodes data by space-time decoding.
- detection unit 108 in wireless communication terminal device 100 in which an external device such as battery pack 160 can be directly attached, detection unit 108 has battery element 160 in which attached battery pack 160 has an antenna element.
- the switching unit 109 only detects the antenna element 101 of the wireless communication terminal device.
- the transmission method power using the antenna is also switched to the transmission method using the antenna element 101 and the antenna element 161 included in the battery pack 160.
- the wireless communication terminal device 100 can be easily installed by directly attaching the battery pack 160 including the high frequency circuit (RF processing unit 162) without using a coaxial cable or the like. It is possible to prevent deterioration of radio characteristics due to signal loss in the coaxial cable and to perform high-speed communication.
- the wireless communication terminal device can realize high-speed communication without using the antenna element mounting space in the wireless communication terminal device by using the antenna element provided in the battery pack. .
- the detection unit 108 of the wireless communication terminal device 100 detects whether or not the battery pack 160 attached to the wireless communication terminal device 100 has an antenna element. It may be detected whether or not the battery pack 160 is supplying power to the wireless communication terminal device 100.
- the switching unit 109 uses the antenna element from the transmission method using only the antenna element 101 of the wireless communication terminal apparatus 100. 101 and the battery pack 160 are switched to the transmission system using the antenna element 161. As a result, the wireless communication terminal apparatus 100 can perform communication while supplying power, and can perform high-speed communication without worrying about power consumption.
- the antenna element 161 of the battery pack 160 attached to the mobile phone 100 is preferably a planar antenna.
- the distance between the antenna elements should be at least half a wavelength apart. Is desirable. Thereby, the quality of MIMO transmission can be maintained.
- the shape of the antenna element 161 may be any shape as long as it can be stored in the battery pack 160 other than the planar antenna. For example, when a linear antenna, a slot antenna, or the like is applied, the antenna element 161 can be protruded from the battery pack 160, so that a plurality of antenna elements can be easily arranged apart from each other.
- the interval between the antenna elements may be narrowed to such an extent that the plurality of antenna elements are inductively coupled.
- battery pack 160 has external antenna element 161 and an RF treatment.
- the battery pack 160 may be configured to include some of the functions of the BB signal processing unit 103 of the mobile phone 100, such as a quadrature modulation / demodulation function, an AZD conversion function, and a DZA conversion function. Good.
- the interface between the mobile phone 100 and the battery pack 160 becomes a digital signal, and an effect that the interface specifications can be easily obtained is obtained.
- the battery pack 160 with a built-in antenna has a size that can be accommodated in the casing of the mobile phone 100, but can be directly attached to the mobile phone 100.
- the battery pack size and mounting type are not limited thereto.
- the battery pack 310 may have a structure that can stand on its own, and may be mounted on a foldable mobile phone 300 to perform multi-antenna transmission.
- the parts other than the antenna position 311 are hatched for distinction. In this case, since the battery can be charged more, it is possible to communicate for a long time, and since the external antenna element 311 is not covered with a hand, the antenna radiation characteristics can be improved.
- the MIMO transmission is used as an example of the multi-antenna transmission mode.
- AAA transmission may be used.
- the multi-antenna conversion / modulation unit 111 performs beam-forming / null steering processing to obtain an effect of suppressing the interference wave.
- the antenna element 101 and the external antenna element 161 that are preferentially provided in the mobile phone 100 need to be close to each other to the extent that directivity control by AAA is possible (about half wavelength).
- antenna switching diversity that operates antenna element 101 and external antenna element 161 that are preferentially provided in mobile phone 100 in accordance with the radio wave environment may be used. . In this case, it is possible to improve the communication quality even during single antenna transmission.
- the case where the battery pack is attached to the mobile phone has been described as an example.
- Embodiment 2 of the present invention a case where a charger is attached to a mobile phone will be described as an example. Light up.
- FIG. 7 is a perspective view of mobile phone 100 according to Embodiment 2 of the present invention.
- a charger 400 is detachably attached to the cellular phone 100.
- the charger 400 is provided with a plurality of external antenna elements 401 upright.
- communication between base station 200 and mobile phone 100 is MIMO transmission.
- the mobile phone 100 detects that the mobile phone 100 is attached to the charger 400, and in addition to the antenna element 101 provided in the mobile phone 100, MIMO transmission is realized by using the external antenna element 401 provided in the charger 400 attached to the telephone 100.
- the data communicated with the mobile phone 100 is used by the computer 550 or the like via the cable 500, for example.
- the shape and quantity of the external antenna element 401 are not particularly limited as long as they can be attached to the charger 400. Also, in order to ensure the quality of MIMO transmission, it is desirable that the antenna elements be spaced apart by more than half a wavelength.
- FIG. 8 is a block diagram showing an example of the configuration of mobile phone 100 and charger 400 directly attached to mobile phone 100 in the present embodiment. Note that the cellular phone device 100 in FIG. 8 has the same configuration as the cellular phone 100 in FIG.
- charger 400 is supplied from external antenna element 401, RF processing unit 402 that up-converts and down-converts the signal, connector 403, and commercial power source 420.
- a charge control circuit 4004 for charging the battery pack 430 by converting AC voltage to DC voltage and an electrode 405 are provided.
- the antenna element 401 receives a radio signal transmitted from the base station 200 and outputs it to the RF processing unit 402. In addition, the antenna element 401 transmits a signal that has been subjected to predetermined radio processing by the RF processing unit 402 to the base station 200.
- the RF processing unit 402 performs predetermined radio processing such as down-conversion on the received signal input from the antenna element 401, converts the frequency into a radio baseband signal, and converts the frequency into a mobile phone 100. Output. Also, the RF processing unit 402 performs predetermined radio processing such as up-conversion on the baseband signal input from the attached mobile phone 100 to convert it to a radio band signal, and outputs it to the antenna element 401.
- Connector 403 is connected to connector 104 on mobile phone 100 side. When charger 400 is attached to mobile phone 100, connector 403 outputs the baseband signal from RF processing unit 402 to connector 104. Connector 403 outputs a baseband signal input from mobile phone 100 to RF processing section 402.
- Charge control circuit 404 converts AC voltage supplied from external commercial power supply 420 connected to charger 400 into DC voltage, and charges battery pack 430.
- the electrode 405 is connected to a connector on the battery pack 430 side, and outputs power from the charge control circuit 404 to the battery pack 430.
- the battery pack 430 includes an electrode 431, a battery 432, and an electrode 433.
- the electrode 431 is connected to the electrode 405 of the charger 400, and outputs the power supplied from the charger 400 to the battery 432.
- the battery 432 supplies power charged through the electrode 431 to the mobile phone 100.
- the electrode 433 is connected to the electrode 107 on the mobile phone 100 side and outputs power from the battery 432 to the mobile phone 100.
- detection unit 108 can detect a baseband signal from charger 400 via connector 104, so that charger 400 is an antenna. It is determined that the element 401 is included. Then, the detection unit 108 controls the switching unit 109 to switch the transmission method from the single antenna transmission mode to the multi-antenna transmission mode using the antenna element 101 of the own device and the antenna element 401 of the charger 400. Specifically, the received signal input from the external antenna element 401 of the charger 400 is subjected to predetermined radio processing by the RF processing unit 402 and converted into a baseband signal. Is output to the mobile phone 100.
- the detection unit 108 of the mobile phone 100 receives the baseband signal from the charger 400 via the connector 104, thereby determining that the charger 400 has the antenna element 401, and the switching unit 109 has a single antenna.
- the transmission mode force is also controlled to switch the transmission method to the multi-antenna transmission mode.
- the switching unit 109 uses only the antenna element 401 of the mobile phone 100 and the transmission method using the antenna element 101 of the mobile phone 100 and the antenna element 401 of the charger 400. Cut into Replace.
- control unit 105 detects that charger 400 is attached to mobile phone 100 via connector 104 and BB signal processing unit 103, and transmits a multi-antenna to BB signal processing unit 103. Command to perform modulation / demodulation processing in mode. Then, the multi-antenna modulation / demodulation unit 111 performs digital modulation / demodulation processing corresponding to MIMO transmission, and uses the antenna element 101 provided in the mobile phone 100 and the external antenna element 401 provided in the charger 400. connect. Note that the operation of MIMO transmission as an example of the multi-antenna transmission mode is the same as that described in Embodiment 1 above, and thus detailed description thereof is omitted.
- charging control circuit 404 converts AC power input from commercial power supply 420 outside charger 400 into DC power, and charges battery pack 430 through electrode 405.
- the battery 432 in the battery pack 430 is charged with electric power from the charger 400 via the electrode 431.
- the charged electric power is supplied to the mobile phone 100 through the electrode 433.
- the detection unit 108 is connected to the base unit of the charger power through the connector 104. Since it is not possible to detect the signal, it is determined that the attached charger has an antenna element. That is, in this case, the switching unit 109 does not switch the transmission method, and therefore performs communication in the single antenna transmission mode using only the antenna element 101 of the mobile phone 100. Since the operation of the mobile phone 100 in this case is the same as the operation of the mobile phone shown in the first embodiment, detailed description thereof is omitted.
- detection unit 108 determines whether or not attached charger 400 has an antenna element.
- the switching unit 109 uses only the antenna element 101 of the wireless communication terminal device 100. Therefore, the transmission system is switched to the transmission system using the antenna element 401 included in the antenna element 101 and the charger 400.
- the wireless communication terminal device 100 enables the direct attachment of the charger 400 having a high-frequency circuit (RF processing unit 402) without using a coaxial cable or the like. It is possible to prevent radio characteristics from being deteriorated due to the loss of signal passing through the cable and to perform high-speed communication.
- wireless communication terminal device 100 uses antenna element 401 provided in charger 400 to achieve high-speed communication without occupying the antenna element mounting space in wireless communication terminal device 100. can do.
- detection unit 108 of wireless communication terminal apparatus 100 detects whether or not charger 400 attached to wireless communication terminal apparatus 100 has the antenna element 401, and You may make it detect whether the charger 400 is the force which is charging the radio
- the switching unit 109 uses the antenna element from the transmission method using only the antenna element 101 of the wireless communication terminal device 100. 101 and the transmission system using the antenna element 401 of the charger 400 are switched. As a result, wireless communication terminal apparatus 100 can communicate in a charged state, so that it is possible to prevent battery exhaustion associated with high-speed communication with a large amount of power consumption and perform long-time communication.
- charger 400 includes external antenna element 401 and RF processing unit 402.
- the charger 400 may have a quadrature modulation / demodulation function, AZD shelving capability, DZA shelving capability, and the like.
- an interface between the mobile phone 100 and the charger 400 becomes a digital signal, and an effect that the interface specification can be easily obtained is obtained.
- MIMO transmission is exemplified as an example of the multi-antenna transmission mode.
- AAA transmission may be used.
- charger 400 in addition to the effect of the first embodiment described above, charger 400 generally has a large antenna mounting space, so that a large number of antenna elements can be arranged. Therefore, by increasing the number of antenna elements, it is possible to increase the null point of directivity, and the effect of improving the performance of suppressing interference waves can be obtained.
- antenna switching diversity may be used in which the antenna element 101 and the external antenna element 101 preferentially provided in the mobile phone 100 are operated according to the radio wave environment. . In this case, even during single antenna transmission, communication The effect that quality can be improved is obtained.
- the wireless communication terminal device detects the presence or absence of an antenna element of an attached external device, and when the external device has an antenna element, only the antenna element of its own device is used. Single antenna transmission system power We switched to the multi-antenna transmission system using the antenna element of this device and the antenna element of the external device.
- the wireless communication terminal apparatus detects the presence or absence of an antenna element of an attached external device, and when the external apparatus has an antenna element, MIMO only uses the antenna element of its own apparatus. Transmission method power Switch to the MIMO transmission method that uses the antenna element of this device and the antenna element of the external device for communication.
- a cellular phone according to Embodiment 3 of the present invention will be described with reference to the drawings.
- FIG. 9 is a perspective view of mobile phone device 600 that is an example of the wireless communication terminal apparatus according to Embodiment 3 of the present invention.
- the mobile phone 600 is equipped with a battery pack which is an example of an external device that can be attached and detached.
- FIG. 9 shows a state where mobile phone 600 having antenna element 601 and antenna element 602 performs MIMO transmission with base station 700.
- the mobile phone 600 determines that the battery pack 150 does not have an antenna element, Communication is performed between the two antenna elements 601 and 602 provided in advance in the mobile phone 600 and the two antenna elements provided in the base station 700. That is, mobile phone 600 and base station 700 each perform so-called 2 ⁇ 2 MIMO transmission by using two antenna elements.
- mobile phone 600 when battery pack 660 is directly attached to mobile phone 600, mobile phone 600 includes mobile phone 600 having antenna element 661 and antenna element 662. Therefore, communication with the base station 700 is performed in the transmission mode that uses only the antenna elements 6001 and 602 of its own device 600, that is, the 2 ⁇ 2 MIMO transmission method, and the antenna element 601 provided in the mobile phone 600 in advance. And switch to the transmission mode using the two antenna elements 661 and 662 of the battery pack 660. Ie The mobile phone 600 and the base station 700 each use four antenna elements, thereby performing 4 ⁇ 4 MIMO transmission and enabling higher-speed communication.
- FIG. 10 is a block diagram showing an example of the configuration of mobile phone 600 and the battery pack directly attached to mobile phone 600 according to Embodiment 3 of the present invention. Note that, in the components of the cellular phone and the battery pack in FIG. 10, the same components as those in the cellular phone and the battery pack in FIG.
- a mobile phone 600 includes two antenna elements 601 and 602, an RF unit 603 and 604 that up-converts and down-converts a signal, a BB signal processing unit 605 that performs digital modulation / demodulation, a connector 606, and a mobile phone
- a control unit 607 that controls the operation of 600, a power supply unit 106, and an electrode 107 are included.
- Antenna element 601 and antenna element 602 each receive a radio signal transmitted independently for each antenna element of base station 700, and output it to RF processing section 603 and RF processing section 604. In addition, antenna element 601 and antenna element 602 transmit signals that have been subjected to predetermined radio processing by RF processing unit 603 and RF processing unit 604, to base station 700, respectively.
- the RF processing unit 603 and the RF processing unit 604 perform predetermined radio processing such as down-conversion on the reception signals respectively input from the antenna element 601 and the antenna element 602, and thereby convert the radio band power into a baseband signal.
- the frequency is converted and output to the BB signal processing unit 605.
- the RF processing unit 603 and the RF processing unit 604 perform predetermined radio processing such as up-conversion on the modulation signal input from the BB signal processing unit 605, and perform frequency conversion from a baseband band to a radio band signal to perform antenna conversion. Outputs to element 601 and antenna element 602, respectively.
- the BB signal processing unit 605 performs processing such as space-time coding and space-time decoding for MIMO transmission. That is, the BB signal processing unit 605 performs AZD conversion processing, demodulation processing, and space-time decoding processing on the signals subjected to radio processing by the RF processing unit 603 and the RF processing unit 604, respectively. Receive data transmitted from the antenna element. In addition, the BB signal processing unit 605 performs DZA conversion processing on transmission data, The space-time coding process and the modulation process are performed, separated into signals to be transmitted from the respective antenna elements, and output to the RF processing unit 603 and the RF processing unit 604. The specific configuration of the BB signal processing unit 605 will be described later.
- the connector 606 is connected to a connector on the external device side such as a battery pack.
- the connector 606 detects the attachment of the external device and outputs the detection result to the BB signal processing unit 605.
- the connector 606 outputs the baseband signal from the BB signal processing unit 605 to the attached external device.
- Control unit 607 controls each unit of mobile phone 600 such as BB signal processing unit 605 and power supply unit 106.
- the BB signal processing unit 605 includes a detection unit 608, a switching unit 609, a 2 ⁇ 2MIMO modulation / demodulation unit 610, and a 4 ⁇ 4MIMO modulation / demodulation unit 611.
- Detection unit 608 detects whether or not an external device directly attached to mobile phone 600 via connector 606 has an antenna element, and outputs the detection result to switching unit 609. Specifically, when the external device does not have an antenna element, the detection unit 608 switches to a 2 X 2 MIMO transmission mode, that is, a 2 X 2 MIMO transmission method using only the antenna element of the own device. Direct to 609. In addition, when the external device has an antenna element, the detection unit 608 switches to 4 X 4 MIMO transmission mode, that is, to switch to the 4 X 4 MIMO transmission method using the antenna element of the own device and the antenna element of the external device. Direct to Part 609.
- Switching unit 609 switches the connection destination of RF processing unit 603 and RF processing unit 604 to 2 X 2 MIMO modulation / demodulation unit 610 or 4 X 4 MIMO modulation / demodulation unit 611 according to the detection result from detection unit 608! . Specifically, the switching unit 609 switches the connection destination to the 2 X 2 MIMO modulation / demodulation unit 610 if the detection result is 2 X 2 MIMO transmission mode, and the connection destination to 4 X 4 MIMO if the detection result force X 4 MIMO transmission mode. Switch to modem 611.
- 2 X 2 MIMO modulation / demodulation section 610 performs processing such as space-time coding and space-time decoding in order to perform 2 X 2 MIMO transmission using two antennas. That is, 2 X 2MIM O modulation / demodulation unit 610 performs space-time coding processing on transmission data, and performs space-time coding. The subsequent signal is modulated to generate a modulated signal. Then, the 2 ⁇ 2MIMO modulation / demodulation unit 610 performs DZA conversion on the modulated signal and outputs the result to the RF processing unit 603 and the RF processing unit 604, respectively.
- 2 ⁇ 2MIMO modulation / demodulation section 610 performs AZD conversion on the received signals input from RF processing section 603 and RF processing section 604, converts them into digital signals, and separates them into signals for each antenna. Then, 2 ⁇ 2MIMO modulation / demodulation section 610 performs demodulation processing on the signal separated for each antenna to generate a demodulated signal, performs time-space decoding processing on this demodulated signal, and obtains received data.
- 4 X 4 MIMO modulation / demodulation section 611 performs processing such as space-time coding and space-time decoding. That is, 4 ⁇ 4MIM modulation / demodulation section 611 performs space-time coding processing on transmission data, and modulates the signal after space-time coding to generate a modulated signal. Then, 4 ⁇ 4 MIMO modulation / demodulation unit 6111 performs DZ A conversion on this modulated signal, and outputs the result to RF processing unit 603, RF processing unit 604, and RF processing unit of the external device.
- the 4 X 4 MIMO modulation / demodulation unit 611 performs AZD conversion on the received signals respectively input from the RF processing unit 603, the RF processing unit 604, and the RF processing unit of the external device, and converts them into digital signals. To separate. Then, 4 ⁇ 4 MIMO modulation / demodulation section 611 performs demodulation processing on the signal separated for each antenna to generate a demodulated signal, and performs space-time decoding processing on the demodulated signal to obtain received data.
- Antenna element 661 and antenna element 662 receive signals transmitted independently from base station 700, and output the signals to RF processing section 663 and RF processing section 664, respectively. In addition, antenna element 661 and antenna element 662 transmit signals that have been subjected to predetermined radio processing by RF processing section 663 and RF processing section 664, to base station 700, respectively.
- the RF processing unit 663 and the RF processing unit 664 are the antenna element 661 and the antenna element 66.
- the received signals input from 2 are subjected to predetermined radio processing such as down-conversion, and the radio band power is also frequency-converted to a baseband signal and output to the connector 665.
- the RF processing unit 663 and the RF processing unit 664 perform predetermined radio processing such as up-conversion on the baseband signal input from the mobile phone 600, and frequency-convert the baseband band to the radio band signal. Are output to antenna element 661 and antenna element 662, respectively.
- Connector 665 is connected to connector 606 on mobile phone 600 side. When battery pack 660 is attached to mobile phone 600, connector 665 outputs the baseband signals from RF processing unit 663 and RF processing unit 664 to connector 606. The connector 665 outputs a baseband signal input from the mobile phone 600 to the RF processing unit 663 and the RF processing unit 664.
- the detection unit 608 is connected to the battery pack 150 via the connector 606. Since the baseband signal cannot be detected! /, It is determined that the battery pack 150 does not have an antenna element. In this case, since the switching unit 609 does not switch the transmission method, the control unit 607 has only the antenna element 601 and the antenna element 602 provided in the mobile phone 600 with respect to the BB signal processing unit 605. Commands to perform digital modulation / demodulation in the 2 X 2 MIMO transmission mode used.
- the 2 ⁇ 2 MIMO modulation / demodulation unit 610 of the BB signal processing unit 605 performs signal processing such as space-time code processing during MIMO transmission, and performs signal processing such as space-time decoding processing during MIMO reception, MIMO communication is performed using only the two antenna elements 601 and 602 provided in advance in the mobile phone 600.
- detection unit 608 detects a baseband signal from battery pack 660 via connector 606. Therefore, it is determined that the battery pack 660 has an antenna element. Then, the detection unit 608 switches the antenna unit of the own device and the battery pack 660 from the 2 X 2 MIMO transmission mode in which the switching unit 609 uses only the antenna element of the own device as the transmission method. Control to switch to 4 X 4 MIMO transmission mode using antenna elements. Specifically, received signals input from the external antenna element 661 and antenna element 662 of the battery pack 660 are subjected to predetermined radio processing by the RF processing unit 663 and the RF processing unit 664, respectively, and converted into baseband signals.
- the baseband signal is output to mobile phone 600 via connector 665.
- the detection unit 608 of the mobile phone 600 receives the baseband signal via the connector 606, thereby determining that the battery pack 660 has the antenna element 661 and the antenna element 662, and the switching unit 609 transmits 2 X 2 MIMO transmission.
- the mode controller is also controlled to switch the transmission method to 4 X 4 MIMO transmission mode.
- switching unit 609 uses antenna elements 601 and 602 of mobile phone 600 and uses 2 X 2 MIMO transmission system to change antenna elements 6 01 and 602 of mobile phone 600, and battery pack 660.
- the antenna element 661 and the antenna element 662 are switched to V, 4 X 4 MIMO transmission system.
- control unit 607 detects that the battery pack 660 is attached to the mobile phone 600 via the connector 606 and the BB signal processing unit 605, and performs 4 X on the BB signal processing unit 605. Command to perform digital modulation / demodulation in 4 MIMO transmission modes. Then, mobile phone 600 performs MIMO communication using two antenna elements 601 and 602 provided in advance in own device 600 and two external antenna elements 661 and 662.
- mobile phone 600 notifies base station 700 of control information indicating that preparation for 4 ⁇ 4 MIMO transmission is complete.
- base station apparatus 700 performs space-time code processing within the base station apparatus, and performs MIMO transmission of independent transmission signals using four antenna elements.
- the mobile phone 600 receives Ml MO signals transmitted from the base station by using two antenna elements 601 and 60 2 and two external antenna elements 661 and 662 that are provided on the mobile phone 600. .
- 4 ⁇ 4 MIMO modulation / demodulation section 611 performs matrix operation on the received signal and separates it into a signal for each antenna, performs space-time decoding, and acquires received data
- the mobile phone 600 uses the 4 X 4 MIMO modulation / demodulation unit 611.
- Base station 700 decodes data by space-time decoding in 4 ⁇ 4 MIMO transmission mode.
- detection unit 608 has an attached battery pack 660 as an antenna.
- the switching unit 609 From the 2 X 2 MIMO transmission system using only the antenna element 601 and the antenna element 6 02 to the 4 X 4 MIMO transmission system using the antenna elements 661 and 662 and the antenna elements 661 and 662 of the battery pack 660. Switch.
- the wireless communication terminal device 600 is not required to use a coaxial cable or the like, and the battery pack 660 having a high-frequency circuit (RF processing unit 663 and RF processing unit 664) can be directly mounted. In addition to preventing the deterioration of radio characteristics due to signal loss in the cable, higher-speed communication can be performed.
- wireless communication terminal device 600 uses antenna element 661 and antenna element 662 provided in battery pack 660 to perform high-speed communication without allocating the antenna element mounting space in wireless communication terminal device 600. Can be realized.
- detection unit 608 of radio communication terminal apparatus 600 detects whether or not battery pack 660 attached to radio communication terminal apparatus 600 has a power of an antenna element, and It may be detected whether the battery pack 660 is capable of supplying power to the wireless communication terminal device 600.
- the switching unit 609 uses only the antenna element 601 and the antenna element 602 of the wireless communication terminal device 600.
- the transmission system force is also switched to the 4 ⁇ 4 MIMO transmission system using the antenna elements 601 and 602 and the antenna elements 661 and 662 of the battery pack 660.
- the wireless communication terminal device 600 can communicate with the power supplied, so that the power consumption High-speed communication can be performed without worrying about.
- the antenna elements 661 and 662 of the battery pack 660 attached to the mobile phone 600 are preferably planar antennas.
- the spacing between the antenna elements should be separated by at least a half wavelength or more to avoid an increase in spatial correlation due to coupling between the antenna elements. This is desirable. Thereby, the quality of MIMO transmission can be maintained.
- the antenna elements 661 and 662 may have any shape other than the planar antenna as long as it can be stored in the battery pack 660.
- the antenna element when a linear antenna slot antenna or the like is applied, the antenna element can be protruded from the battery pack 660, so that an effect of easily disposing a plurality of antenna elements can be obtained.
- the distance between the antenna elements may be narrowed to such an extent that the plurality of antenna elements are inductively coupled.
- the battery pack 660 includes the external antenna elements 661 and 662, the RF unit 663, and the RF processing unit 664.
- the battery pack 660 may have a part of the functions, for example, a quadrature modulation / demodulation function, an AZD conversion function, a DZA conversion function, and the like.
- the interface between the mobile phone 600 and the battery pack 660 becomes a digital signal, and the effect that the interface specifications can be simplified is obtained.
- the battery pack 660 with a built-in antenna is sized to be accommodated in the case of the Ml MO mobile phone 600, but can be directly attached to the mobile phone 600.
- the size and mounting type of the battery pack are not limited thereto.
- the battery pack 810 has a structure that can stand on its own, and is attached to a folding-type mobile phone 800, and the antenna element 801 and antenna element 802 of the mobile phone 800 are connected to the battery pack.
- the antenna element 812 can be used for V, 4 x 4 MIMO transmission. In this case, since the battery can be charged more, communication is possible for a long time, and since the external antenna elements 811 and 812 are not covered with hands, the antenna radiation characteristics can be improved. can get.
- both downlink communication and uplink communication are 2 X.
- the BB signal processing unit 605 has a function of switching the number of antennas during MIMO transmission, for example, downlink transmission power X 4 MIMO transmission, uplink communication
- the number of antenna sets for MIMO transmission may differ between downlink and uplink communications. In this case, an unnecessary increase in communication capacity can be avoided, and the power consumption of the MIMO mobile phone and the base station can be reduced.
- the case where the battery pack is attached to the mobile phone has been described as an example.
- Embodiment 4 of the present invention a case where a charger is attached to a mobile phone will be described as an example.
- FIG. 12 is a perspective view of mobile phone 600 according to Embodiment 4 of the present invention.
- a charger 900 is detachably attached to the mobile phone 600.
- the charger 900 is provided with two external antenna elements 901 and antenna elements 902 standing upright.
- communication between base station apparatus 700 and mobile phone 600 is assumed to be MIMO transmission.
- the mobile phone 600 detects that the mobile phone 600 is connected to the charger 900, and the two antenna elements 601 and 602 provided in the mobile phone 600 are preliminarily provided.
- 4 ⁇ 4 MIMO transmission is realized by using the two external antenna elements 901 and 902 provided in the charger 900 attached to the mobile phone 600.
- the data communicated with the mobile phone 600 is used by the computer 1100 via the cable 1000, for example.
- the external antenna elements 901 and 902 may have any shape and quantity as long as they can be attached to the charger 900 without being particularly limited. Also, in order to ensure the quality of MIMO transmission, it is desirable that the antenna elements be spaced apart by more than half a wavelength. Yes.
- FIG. 13 is a block diagram showing an example of the configuration of mobile phone 600 and charger 900 attached to mobile phone 600 according to Embodiment 4 of the present invention. Note that the mobile phone 600 in FIG. 13 has the same configuration as that of the mobile phone in FIG. Further, in the components of the charger and battery pack in FIG. 13, the same components as those in the charger and battery pack of FIG.
- the charger 900 shown in FIG. 13 is supplied from a plurality of external antenna elements 901 and 902, an RF unit 903 and an RF unit 904 that up-convert and down-convert signals, a connector 905, and a commercial power source 420.
- Antenna element 901 and antenna element 902 receive signals transmitted independently from base station 700, and output the signals to RF processing section 903 and RF processing section 904, respectively. In addition, antenna element 901 and antenna element 902 transmit signals that have been subjected to predetermined radio processing in RF processing section 903 and RF processing section 904, to base station 700, respectively.
- the RF processing unit 903 and the RF processing unit 904 perform predetermined radio processing such as down-conversion on the reception signals input from the antenna element 901 and the antenna element 902, respectively, The frequency is converted and output to the connector 905. Also, the RF processing unit 903 and the RF processing unit 904 perform predetermined radio processing such as up-conversion on the baseband signal input from the mobile phone 600 and frequency-convert the baseband band to the radio band signal. Are output to the antenna element 901 and the antenna element 902, respectively.
- Connector 905 is connected to connector 606 on mobile phone 600 side. When the charger 900 is attached to the mobile phone 600, the connector 905 outputs the baseband signal from the RF processing unit 903 and the RF processing unit 904 to the connector 606. Connector 905 outputs a baseband signal input from mobile phone 600 to RF processing section 903 and RF processing section 904.
- the detection unit 608 can detect the baseband signal from the charger 900 via the connector 606. It is determined that the antenna element is included. Then, the detection unit 608 uses the antenna unit of the own device and the antenna element of the battery pack 660 from the 2 X 2 MIMO transmission mode in which the switching unit 609 uses only the antenna element of the own unit as a transmission method. 4 X 4 MIMO transmission mode Control to switch to.
- the received signals input from the external antenna element 9001 and the antenna element 902 of the charger 900 are subjected to predetermined radio processing by the RF processing unit 903 and the RF processing unit 904, respectively, and converted into baseband signals.
- the converted baseband signal is output to the mobile phone 600 via the connector 905.
- the detection unit 608 of the mobile phone 600 receives the baseband signal via the connector 606, thereby determining that the charger 900 has the antenna element 901 and the antenna element 902, and the switching unit 609 transmits 2 X 2 MIMO transmission. Control to switch the transmission method from the mode to the 4 X 4 MIMO transmission mode.
- the switching unit 609 uses the antenna elements 601 and 602 of the mobile phone 600 from the 2 X 2 MIMO transmission method using only the antenna elements 601 and 602 of the mobile phone 600 and the charger 900. Switch to 4 X 4 MIMO transmission system using antenna element 90 1 and antenna element 902.
- control unit 607 detects that the charger 900 is attached to the mobile phone 600 via the connector 606 and the BB signal processing unit 605, and 4 X 4 for the BB signal processing unit 605. Command to perform digital modulation and demodulation in MIMO transmission mode. Then, mobile phone device 600 performs MIMO communication using two antenna elements 601 and 602 provided in advance in own device 600 and two external antenna elements 901 and 902. Note that the specific operation of 4 ⁇ 4 MIMO transmission is the same as that described in Embodiments 1 and 2, and thus detailed description thereof is omitted.
- the detection unit 608 detects the baseband signal of the charger power via the connector 606. Since it is not possible, it is determined that the attached charger has an antenna element. That is, in this case, since the switching unit 609 does not switch the transmission method, the mobile phone 600 has two antenna elements of the base station 700 and two mobile phones 600 that are preliminarily provided.
- the antenna elements 601 and 602 perform 2 X 2 MIMO transmission.
- the operation of mobile phone device 600 in this case is the same as the operation of the mobile phone shown in the third embodiment, and a detailed description thereof will be omitted.
- detection unit 608 has attached charger 900 as an antenna element.
- the switching unit 609 displays the wireless communication terminal device 600. 4 X 4 MIMO transmission system using this antenna element 601 and 602, and antenna element 901 and antenna element 902 of charger 900 from 2 X 2 MIMO transmission system using only 600 antenna elements 601 and 602 Switch to.
- the wireless communication terminal device 600 can be directly connected to the charger 900 having a high-frequency circuit (RF processing unit 903 and RF processing unit 904) without using a coaxial cable or the like.
- the wireless characteristics can be prevented from deteriorating due to signal loss in the cable, and higher-speed communication can be performed.
- wireless communication terminal apparatus 600 uses antenna element 901 and antenna element 902 provided in charger 900, so that high-speed communication can be achieved without occupying a space for mounting antenna elements in wireless communication terminal apparatus 600. Can be realized.
- detection unit 608 of radio communication terminal apparatus 600 detects whether charger 900 attached to radio communication terminal apparatus 600 has power or not, and the charging The device 900 may detect whether or not the wireless communication terminal device 600 is charged with power.
- the switching unit 609 uses only the antenna element 601 and the antenna element 602 of the wireless communication terminal device 600 for 2 ⁇ 2 MIMO transmission. The system is switched to the 4 ⁇ 4 MIMO transmission system using the antenna elements 601 and 602 and the antenna element 901 and the antenna element 902 included in the charger 900.
- charger 900 includes external antenna elements 901 and 902 and RF processing units 903 and 904, but the function of BB signal processing unit 605 of mobile phone 600 is described.
- the charger 900 may be configured to include a part of the charger 900, such as an orthogonal modulation / demodulation function, an AZD conversion function, and a DZA conversion function.
- the interface between the mobile phone 600 and the charger 900 is a digital signal, and the effect that the interface specifications can be easily obtained is obtained.
- communication may be performed using one antenna element that is preferentially installed in mobile phone 600 and one external antenna element.
- the antenna element spacing during MIMO transmission can be increased, so that the communication quality can be improved.
- the transmission method uses the antenna element of the wireless communication terminal device and the antenna element of the external device directly attached to the wireless communication terminal device. By switching to, high-speed communication can be performed, which is useful as a wireless communication terminal device that has the effect of being able to directly attach external devices.
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Abstract
A wireless communication terminal device which reduces deterioration of wireless characteristics and performs high-speed communication by switching to a transmission system which uses an antenna element of the wireless communication terminal device and an antenna element of an external device directly mounted on the wireless communication terminal device when it is detected that the external device has the antenna element. In the wireless communication terminal device (100), whereupon the external device can be directly mounted, a detecting section (108) detects whether the mounted external device (160) has the antenna element or not. When it is detected that the external device (160) has the antenna element, a switching section (109) switches from the transmission system wherein only the antenna element (101) of the wireless communication terminal device (100) is used to the transmission system wherein the antenna element (101) and the antenna element (161) of the external device (160) are used.
Description
明 細 書 Specification
無線通信端末装置および伝送方式切替方法 Wireless communication terminal apparatus and transmission method switching method
技術分野 Technical field
[0001] 本発明は、外部機器が直接装着可能な無線通信端末装置およびこの無線通信端 末装置の伝送方式切替方法に関する。 TECHNICAL FIELD [0001] The present invention relates to a wireless communication terminal device that can be directly attached to an external device and a transmission method switching method for the wireless communication terminal device.
背景技術 Background art
[0002] 近年、より高速なデータ通信を実現するため、 MIMO (Multi Input Multi Output) や AAA (Adaptive Array Antenna)に代表されるように複数のアンテナを利用したマ ルチアンテナ伝送方式が検討されている。 MIMOは、送受信の双方にアレーアンテ ナを用いて通信を行う伝送方式であり、空間分割多重や時空間符号化により高速通 信を可能にする。また、 AAAは、ビームフォーミング制御やヌルステアリング制御を 行い干渉波を抑圧することにより高速通信を可能にする。いずれの伝送方式も、複 数のアンテナ素子が必要となる(例えば、非特許文献 1参照)。 [0002] In recent years, multi-antenna transmission methods using multiple antennas, such as MIMO (Multi Input Multi Output) and AAA (Adaptive Array Antenna), have been studied to realize higher-speed data communication. Yes. MIMO is a transmission method that uses an array antenna for both transmission and reception, and enables high-speed communication by space division multiplexing and space-time coding. AAA also enables high-speed communication by suppressing interference waves by performing beamforming control and null steering control. Both transmission methods require a plurality of antenna elements (see Non-Patent Document 1, for example).
[0003] しかし、複数のアンテナ素子を情報端末装置に搭載する際には、アンテナ素子の 実装スペースが限られるためアンテナ素子間の相互結合の問題が生じてしまう。そこ で、アンテナ素子を情報端末装置の外部に取り付けるように構成したものが知られて いる(例えば、特許文献 1参照)。 However, when a plurality of antenna elements are mounted on an information terminal device, the problem of mutual coupling between the antenna elements arises because the mounting space for the antenna elements is limited. Therefore, a configuration in which an antenna element is attached to the outside of an information terminal device is known (for example, see Patent Document 1).
[0004] 図 1に、従来の外付けアンテナと携帯電話機の接続状態を示す斜視図を示す。外 付けアンテナ 1は、複数のアンテナを円盤状の台座の中央と周囲に直立させてァレ 一アンテナを構成している。この外付けアンテナ 1は、同軸ケーブル 2によって携帯 電話機 3と接続されている。そして、外付けアンテナ 1を可変指向性アンテナとして外 付けアンテナ 1の指向性を制御し、ビームフォーミング制御やヌルステアリング制御を 行うことにより通信品質を保っている。 FIG. 1 is a perspective view showing a connection state between a conventional external antenna and a mobile phone. The external antenna 1 is an array antenna in which a plurality of antennas are placed upright at the center and periphery of a disk-shaped pedestal. The external antenna 1 is connected to the mobile phone 3 by a coaxial cable 2. Communication quality is maintained by controlling the directivity of the external antenna 1 by using the external antenna 1 as a variable directivity antenna and performing beam forming control and null steering control.
[0005] また、携帯電話機において一般的に用いられるホイップアンテナや逆 F形アンテナ の他にも、アンテナ素子を携帯電話機の電池パックや充電器に備える構成も知られ ている(例えば、特許文献 2、特許文献 3参照)。 [0005] In addition to whip antennas and inverted F-shaped antennas that are generally used in mobile phones, configurations in which antenna elements are provided in battery packs and chargers of mobile phones are also known (for example, Patent Document 2). And Patent Document 3).
[0006] 図 2は、従来の電池パック内蔵アンテナの斜視図である。電池パック 20に不平衡給
電アンテナ 21とアンテナ地線 22とを備え、アンテナ 21の放射電流をアンテナ地線 2 1を介して電池パック 20のグランドに流す構成となっている。この構成により、携帯電 話機の筐体を手に持った場合のアンテナ放射利得を低減することができる。 FIG. 2 is a perspective view of a conventional battery pack built-in antenna. Unbalanced supply to battery pack 20 The electric antenna 21 and the antenna ground wire 22 are provided, and the radiation current of the antenna 21 is passed through the antenna ground wire 21 to the ground of the battery pack 20. With this configuration, it is possible to reduce the antenna radiation gain when the portable telephone case is held in the hand.
[0007] 図 3は、従来のアンテナ付き充電器の概要を示す構成図である。充電器 30は、携 帯電話機 40を固定する携帯電話機固定部 31と、携帯電話機 40の電池を充電する ための電源コネクタ 32と、外部アンテナ 33を接続するアンテナコネクタ 34とを備えて いる。そして、充電器 30は、アンテナコネクタ 34を介して外部アンテナ 33を接続する ことによりアンテナ付き充電器となる。携帯電話機 40は、内蔵アンテナ素子 41を外部 アンテナ 33に切り替えるスィッチ 42を有している。外部アンテナ 33は、建物の屋上ま たは窓際に設置され、ケーブル 35で接続したアンテナコネクタ 34と結合する。結合 通知部 36は、携帯電話機 40が充電器 30に固定されて充電中の場合に、結合信号 を結合検出部 43に通知する。この通知により、スィッチ 42が制御され、無線回路 44 との接続は内蔵アンテナ素子 41から外部アンテナ 33に切り替えられる。 FIG. 3 is a configuration diagram showing an outline of a conventional charger with an antenna. The charger 30 includes a mobile phone fixing part 31 for fixing the mobile phone 40, a power connector 32 for charging the battery of the mobile phone 40, and an antenna connector 34 for connecting an external antenna 33. Then, the charger 30 becomes a charger with an antenna by connecting the external antenna 33 via the antenna connector 34. The cellular phone 40 has a switch 42 that switches the built-in antenna element 41 to the external antenna 33. The external antenna 33 is installed on the roof of a building or near a window, and is coupled to an antenna connector 34 connected by a cable 35. The combination notification unit 36 notifies the combination detection unit 43 of a combination signal when the mobile phone 40 is fixed to the charger 30 and is being charged. By this notification, the switch 42 is controlled, and the connection with the radio circuit 44 is switched from the built-in antenna element 41 to the external antenna 33.
[0008] この構成により、携帯電話機 40が充電器 30に固定された状態でも、動作させるァ ンテナを内蔵アンテナ素子 41から外部アンテナ 33に切り替えることにより、着実な無 線通信が可能となる。 With this configuration, even when the mobile phone 40 is fixed to the charger 30, switching the antenna to be operated from the built-in antenna element 41 to the external antenna 33 enables steady wireless communication.
特許文献 1:特開 2002— 280942号公報(第 6ページ、図 1) Patent Document 1: Japanese Patent Laid-Open No. 2002-280942 (Page 6, Fig. 1)
特許文献 2 :特開 2000— 13119号公報 (第 2ページ、図 3) Patent Document 2: JP 2000-13119 (2nd page, Fig. 3)
特許文献 3:特開 2001— 168982号公報 (第 3ページ、図 1) Patent Document 3: Japanese Unexamined Patent Publication No. 2001-168982 (Page 3, Figure 1)
非特許文献 1:中嶋編「新世代ワイヤレス技術」丸善、 2004年 3月 25日、第 3章、第 4 章、 P. 70- 187 Non-Patent Document 1: Nakajima, “New Generation Wireless Technology” Maruzen, March 25, 2004, Chapter 3, Chapter 4, P. 70-187
発明の開示 Disclosure of the invention
発明が解決しょうとする課題 Problems to be solved by the invention
[0009] し力しながら、従来のアンテナ素子を携帯電話機の外部に取り付ける構成にした携 帯電話機では、 RF送受信回路と外付けアンテナとが同軸ケーブルを介して接続され ているので、同軸ケーブル内の信号の通過損失が大きい。従って、 RF送信回路の 歪み特性や RF受信回路の雑音指数特性などの無線特性の劣化を招くという問題が ある。
[0010] また、外付けアンテナ素子の取り付け位置を図 2で示したように電池パックに内蔵す る構成にした場合、または、図 3で示したように充電器に取り付ける構成にした場合に は、いずれの携帯電話機も、この携帯電話機に内蔵されたアンテナまたは外付けさ れたアンテナのどちらかを用いるシングルアンテナ伝送を行って 、るので、大量のデ ータを送受信する高速通信には適して 、な 、。 However, in a mobile phone configured to attach a conventional antenna element to the outside of the mobile phone, the RF transceiver circuit and the external antenna are connected via a coaxial cable. The signal passing loss is large. Therefore, there is a problem that radio characteristics such as distortion characteristics of the RF transmission circuit and noise figure characteristics of the RF reception circuit are deteriorated. [0010] In addition, when the external antenna element is attached to the battery pack as shown in FIG. 2, or when it is attached to the charger as shown in FIG. Both mobile phones perform single antenna transmission using either the built-in antenna or an external antenna, and are therefore suitable for high-speed communications that send and receive large amounts of data. ,,,.
[0011] 本発明の目的は、外付けアンテナを用いて通信を行う場合に、無線特性の劣化を 低減させ、かつ高速通信を行うことができる無線通信端末装置を提供することである An object of the present invention is to provide a wireless communication terminal apparatus capable of reducing deterioration of wireless characteristics and performing high-speed communication when performing communication using an external antenna.
課題を解決するための手段 Means for solving the problem
[0012] 本発明の無線通信端末装置は、外部機器を直接装着可能な無線通信端末装置で あって、装着された前記外部機器がアンテナ素子を有する力否かを検知する検知手 段と、前記外部機器がアンテナ素子を有すると検知した場合、前記無線通信端末装 置のアンテナ素子のみを用いる伝送方式から当該アンテナ素子および前記外部機 器のアンテナ素子を用いる伝送方式に切り替える切替手段と、を具備する構成を採 る。 [0012] The wireless communication terminal device of the present invention is a wireless communication terminal device to which an external device can be directly attached, the detection means for detecting whether or not the attached external device has an antenna element, Switching means for switching from a transmission method using only the antenna element of the wireless communication terminal device to a transmission method using the antenna element and the antenna element of the external device when it is detected that the external device has an antenna element. The structure to be adopted is adopted.
発明の効果 The invention's effect
[0013] 本発明によれば、検知手段が外部機器がアンテナ素子を有すると検知した場合に は、切替手段が、無線通信端末装置のアンテナ素子およびこの無線通信端末装置 に直接装着された外部機器のアンテナ素子を利用する伝送方式に切り替えることに より、無線特性の劣化を低減させ、かつ高速通信を行うことができる。 [0013] According to the present invention, when the detection means detects that the external device has an antenna element, the switching means is connected to the antenna element of the wireless communication terminal device and the external device directly attached to the wireless communication terminal device. By switching to a transmission system that uses this antenna element, it is possible to reduce deterioration of radio characteristics and perform high-speed communication.
図面の簡単な説明 Brief Description of Drawings
[0014] [図 1]従来の外付けアンテナと携帯電話機の斜視図 FIG. 1 is a perspective view of a conventional external antenna and a mobile phone.
[図 2]従来の電池パック内蔵アンテナの斜視図 [Figure 2] Perspective view of a conventional battery pack built-in antenna
[図 3]従来のアンテナ付き充電器の構成図 [Fig.3] Configuration of conventional charger with antenna
[図 4]本発明の実施の形態 1における携帯電話機の斜視図 FIG. 4 is a perspective view of the mobile phone according to Embodiment 1 of the present invention.
[図 5]本発明の実施の形態 1における携帯電話機および電池パックの構成の一例を 示すブロック図 FIG. 5 is a block diagram showing an example of the configuration of the mobile phone and the battery pack according to Embodiment 1 of the present invention.
[図 6]本発明の実施の形態 1における折り畳みタイプ携帯電話機の斜視図
[図 7]本発明の実施の形態 2における携帯電話機の斜視図 FIG. 6 is a perspective view of a folding type mobile phone according to the first embodiment of the present invention. FIG. 7 is a perspective view of a mobile phone according to Embodiment 2 of the present invention.
[図 8]本発明の実施の形態 2における携帯電話機および充電器の構成の一例を示す ブロック図 FIG. 8 is a block diagram showing an example of the configuration of a mobile phone and a charger according to Embodiment 2 of the present invention.
[図 9]本発明の実施の形態 3における携帯電話機の斜視図 FIG. 9 is a perspective view of a mobile phone according to Embodiment 3 of the present invention.
[図 10]本発明の実施の形態 3における携帯電話機および電池パックの構成の一例を 示すブロック図 FIG. 10 is a block diagram showing an example of the configuration of a mobile phone and a battery pack according to Embodiment 3 of the present invention.
[図 11]本発明の実施の形態 3における折り畳みタイプ携帯電話機の斜視図 FIG. 11 is a perspective view of a folding type mobile phone according to the third embodiment of the present invention.
[図 12]本発明の実施の形態 4における携帯電話機の斜視図 FIG. 12 is a perspective view of a mobile phone according to Embodiment 4 of the present invention.
[図 13]本発明の実施の形態 4における携帯電話機および充電器の構成の一例を示 すブロック図 発明を実施するための最良の形態 FIG. 13 is a block diagram showing an example of the configuration of the mobile phone and the charger in the fourth embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
[0015] 以下、本発明の実施の形態について、図面を用いて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016] (実施の形態 1) [0016] (Embodiment 1)
図 4は、本発明の実施の形態 1における無線通信端末装置の一例である携帯電話 機 100の斜視図である。この携帯電話機 100には、脱着可能な外部機器が装着され ている。本実施の形態では、外部機器の具体例として、電池パックを用いて説明する FIG. 4 is a perspective view of mobile phone 100 that is an example of the wireless communication terminal device according to the first embodiment of the present invention. This mobile phone 100 is equipped with a removable external device. In this embodiment, a battery pack is used as a specific example of the external device.
[0017] 図 4は、無線基地局 200と携帯電話機 100が低速通信および高速通信を行う状態 を示している。具体的には、図 4Aに示すように、携帯電話機 100に通常の電池パッ ク 150が装着された場合には、携帯電話機 100は、この電池パック 150がアンテナ素 子を有しないと判断し、無線基地局装置 200 (以下、基地局と言う)との通信をシング ルアンテナ伝送とする。すなわち、携帯電話機 100は、この携帯電話機 100にあらか じめ備えたアンテナ素子 101のみを利用して通信を行う。この場合には、携帯電話機 100および基地局 200は、低速通信を行う状態となる。 FIG. 4 shows a state where the radio base station 200 and the mobile phone 100 perform low speed communication and high speed communication. Specifically, as shown in FIG. 4A, when a normal battery pack 150 is attached to the mobile phone 100, the mobile phone 100 determines that the battery pack 150 does not have an antenna element, Communication with radio base station apparatus 200 (hereinafter referred to as a base station) is assumed to be single antenna transmission. In other words, the mobile phone 100 performs communication using only the antenna element 101 provided in advance in the mobile phone 100. In this case, the mobile phone 100 and the base station 200 are in a state of performing low-speed communication.
[0018] 一方、図 4Bに示すように、携帯電話機 100に電池パック 160が装着された場合に は、携帯電話機 100は、この電池パック 160がアンテナ素子 161を有していると判断 し、無線基地局装置 200との通信を電池パック 160のアンテナ素子 161を用いたマ ルチアンテナ伝送に切り替える。すなわち、携帯電話機 100は、アンテナ素子 161を
内蔵した電池パック 160が装着されたことを検知し、携帯電話機 100にあらかじめ備 えたアンテナ素子 101に加え、アンテナ内蔵電池パック 160のアンテナ素子 161を 利用して通信するモードに切り替えることによりマルチアンテナ伝送を実現する。この 場合には、図 4Aと比較して、携帯電話機 100および基地局 200は、高速通信を行う 状態となる。 On the other hand, as shown in FIG. 4B, when battery pack 160 is attached to mobile phone 100, mobile phone 100 determines that this battery pack 160 has antenna element 161, and wireless Switch communication with base station device 200 to multi-antenna transmission using antenna element 161 of battery pack 160. That is, the mobile phone 100 has the antenna element 161. Multi-antenna transmission by detecting that the built-in battery pack 160 is installed and switching to the communication mode using the antenna element 161 of the battery pack 160 with built-in antenna in addition to the antenna element 101 provided in the mobile phone 100 in advance. Is realized. In this case, as compared with FIG. 4A, the mobile phone 100 and the base station 200 are in a state of performing high-speed communication.
[0019] 図 5は、本実施の形態における携帯電話機 100およびこの携帯電話機 100に直接 装着される電池パックの構成の一例を示すブロック図である。 FIG. 5 is a block diagram showing an example of the configuration of the mobile phone 100 and the battery pack directly attached to the mobile phone 100 in the present embodiment.
[0020] まず、携帯電話機 100の構成について説明する。 [0020] First, the configuration of the mobile phone 100 will be described.
[0021] 図 5に示す携帯電話機 100は、アンテナ素子 101と、信号をアップコンバートおよ びダウンコンバートする RF (無線周波数)処理部 102と、ディジタル変復調を行う BB (ベースバンド)信号処理部 103と、コネクタ 104と、携帯電話機 101の動作を制御す る制御部 105と、電源部 106と、電極 107と、を有する。 A cellular phone 100 shown in FIG. 5 includes an antenna element 101, an RF (radio frequency) processing unit 102 that up-converts and down-converts a signal, and a BB (baseband) signal processing unit 103 that performs digital modulation / demodulation. A control unit 105 that controls the operation of the mobile phone 101, a power source unit 106, and an electrode 107.
[0022] アンテナ素子 101は、基地局 200から送信される無線信号を受信し、 RF処理部 10 2に出力する。また、アンテナ素子 101は、 RF処理部 102で所定の無線処理が施さ れた信号を基地局 200に送信する。 The antenna element 101 receives a radio signal transmitted from the base station 200 and outputs it to the RF processing unit 102. Further, antenna element 101 transmits a signal subjected to predetermined radio processing by RF processing section 102 to base station 200.
[0023] RF処理部 102は、アンテナ素子 101から入力される受信信号にダウンコンバート 等の所定の無線処理を行 、、無線帯域力 ベースバンド帯域の信号に周波数変換 して BB信号処理部 103に出力する。また、 RF処理部 102は、 BB信号処理部 103か ら入力される変調信号にアップコンバート等の所定の無線処理を行い、ベースバンド 帯域力 無線帯域の信号に周波数変換してアンテナ素子 101に出力する。 The RF processing unit 102 performs predetermined radio processing such as down-conversion on the received signal input from the antenna element 101, converts the frequency to a radio band power baseband signal, and outputs the signal to the BB signal processing unit 103. Output. The RF processing unit 102 also performs predetermined radio processing such as up-conversion on the modulated signal input from the BB signal processing unit 103, converts the frequency into a baseband band power radio band signal, and outputs the signal to the antenna element 101. To do.
[0024] BB信号処理部 103は、 RF処理部 102で無線処理が行われた信号に対して、 AZ D (アナログディジタル)変換処理、復調処理および復号化処理を行い、受信データ を取得する。また、 BB信号処理部 103は、送信データに対して、符号化処理、変調 処理および DZA (ディジタルアナログ)変換処理を行!ヽ、 RF処理部 102に出力する 。なお、 BB信号処理部 103の具体的な構成については、後述する。 [0024] The BB signal processing unit 103 performs AZD (analog-digital) conversion processing, demodulation processing, and decoding processing on the signal subjected to radio processing by the RF processing unit 102, and acquires received data. Further, the BB signal processing unit 103 performs encoding processing, modulation processing, and DZA (digital analog) conversion processing on the transmission data, and outputs them to the RF processing unit 102. The specific configuration of the BB signal processing unit 103 will be described later.
[0025] コネクタ 104は、電池パック等の外部機器側のコネクタと接続する。そして、携帯電 話機 100に外部機器が装着された場合には、コネクタ 104は、外部機器の装着を検 知して、検知結果を BB信号処理部 103に出力する。また、コネクタ 104は、 BB信号
処理部 103からのベースバンド信号を、装着された外部機器に出力する。 [0025] The connector 104 is connected to a connector on the external device side such as a battery pack. When an external device is attached to the mobile phone 100, the connector 104 detects the attachment of the external device and outputs the detection result to the BB signal processing unit 103. The connector 104 has a BB signal The baseband signal from the processing unit 103 is output to the attached external device.
[0026] 制御部 105は、 BB信号処理部 103および電源部 106等の携帯電話機 100の各部 を制御する。電源部 106は、電極 107を介して取得した電力を、制御部 105に出力 する。電極 107は、電池パック等の外部機器と接続することにより、外部機器の電源 力 の電力を電源部 106に出力する。 The control unit 105 controls each unit of the mobile phone 100 such as the BB signal processing unit 103 and the power supply unit 106. The power supply unit 106 outputs the power acquired through the electrode 107 to the control unit 105. The electrode 107 outputs power from the power supply of the external device to the power supply unit 106 by connecting to the external device such as a battery pack.
[0027] 次に、 BB信号処理部 103について、具体的に説明する。 Next, the BB signal processing unit 103 will be specifically described.
[0028] BB信号処理部 103は、検知部 108と、切替部 109と、シングルアンテナ変復調部 1 10と、マルチアンテナ変復調部 111と、を有する。 The BB signal processing unit 103 includes a detection unit 108, a switching unit 109, a single antenna modulation / demodulation unit 110, and a multi-antenna modulation / demodulation unit 111.
[0029] 検知部 108は、コネクタ 104を介して携帯電話機 100に装着された外部機器がアン テナ素子を有する力否かを検知し、検知結果を切替部 109に出力する。具体的には 、検知部 108は、外部機器がアンテナ素子を有しない場合には、シングルアンテナ 伝送モード、すなわち、自機のアンテナ素子のみを用いる伝送方式に切り替えるよう に切替部 109に指示する。また、検知部 108は、外部機器がアンテナ素子を有する 場合には、マルチアンテナ伝送モード、すなわち、自機のアンテナ素子および外部 機器のアンテナ素子を用いる伝送方式に切り替えるように切替部 109に指示する。 The detection unit 108 detects whether or not the external device attached to the mobile phone 100 via the connector 104 has a antenna element, and outputs the detection result to the switching unit 109. Specifically, when the external device does not have an antenna element, the detection unit 108 instructs the switching unit 109 to switch to the single antenna transmission mode, that is, the transmission method using only the own antenna element. In addition, when the external device has an antenna element, the detection unit 108 instructs the switching unit 109 to switch to the multi-antenna transmission mode, that is, the transmission method using the antenna element of the own device and the antenna element of the external device. .
[0030] 切替部 109は、検知部 108からの検知結果に従い、 RF処理部 102との接続先を、 シングルアンテナ変復調部 110あるいはマルチアンテナ変復調部 111に切り替える 。具体的には、切替部 109は、検知結果がシングルアンテナ伝送モードであれば接 続先をシングルアンテナ変復調部 110に切り替え、検知結果がマルチアンテナ伝送 モードであれば接続先をマルチアンテナ変復調部 111に切り替える。 Switching section 109 switches the connection destination with RF processing section 102 to single antenna modulation / demodulation section 110 or multi-antenna modulation / demodulation section 111 according to the detection result from detection section 108. Specifically, switching section 109 switches the connection destination to single antenna modulation / demodulation section 110 if the detection result is a single antenna transmission mode, and switches the connection destination to multi antenna modulation / demodulation section 111 if the detection result is a multi-antenna transmission mode. Switch to.
[0031] シングルアンテナ変復調部 110は、送信信号に対して符号化処理を行!ヽ、符号ィ匕 後の信号に変調処理を施し変調信号を生成し、この変調信号に DZA変換を行って RF処理部 102に出力する。また、シングルアンテナ変復調部 110は、 RF処理部 10 2からの受信信号に AZD変換を行 ヽ、ディジタル信号に復調処理を施し復調信号 を生成し、この復調信号に復号処理を行って受信データを取得する。 [0031] Single antenna modulation / demodulation section 110 performs encoding processing on the transmission signal, modulates the signal after encoding to generate a modulation signal, performs DZA conversion on this modulation signal, and performs RF processing. The data is output to the processing unit 102. Also, the single antenna modulation / demodulation unit 110 performs AZD conversion on the received signal from the RF processing unit 102, performs demodulation processing on the digital signal to generate a demodulated signal, and performs decoding processing on the demodulated signal to receive the received data. get.
[0032] マルチアンテナ変復調部 111は、例えば、 MIMO伝送するための時空間符号化、 時空間復号ィ匕などの処理を行う。すなわち、マルチアンテナ変復調部 111は、送信 信号に時空間符号化処理を行 、、時空間符号化後の信号に変調処理を施し変調信
号を生成し、この変調信号に DZA変換を行って RF処理部 102に出力する。また、 マルチアンテナ変復調部 111は、 RF処理部 102からの受信信号に AZD変換を行 い、ディジタル信号に復調処理を施し復調信号を生成し、この復調信号に時空間復 号化処理を行って受信データを取得する。 [0032] The multi-antenna modulation / demodulation unit 111 performs processing such as space-time coding and space-time decoding for MIMO transmission, for example. That is, the multi-antenna modulation / demodulation unit 111 performs space-time coding processing on the transmission signal, and performs modulation processing on the signal after space-time coding, thereby modulating the modulated signal. Is generated, and the modulated signal is DZA converted and output to the RF processing unit 102. The multi-antenna modulation / demodulation unit 111 performs AZD conversion on the received signal from the RF processing unit 102, performs demodulation processing on the digital signal, generates a demodulation signal, and performs space-time decoding processing on the demodulated signal. Get received data.
[0033] 次に、上記構成を有する携帯電話機 100に脱着自在に装着される電池パック 150 および電池パック 160の構成について説明する。 Next, the configuration of battery pack 150 and battery pack 160 that are detachably attached to mobile phone 100 having the above configuration will be described.
[0034] 電池パック 150は、電池 151および電極 152を有する。電池 151は、携帯電話機 1 00の各部が処理を行うために必要な電力を供給する。電極 152は、携帯電話機 10 0側の電極 107に接続し、電池 151からの電力を携帯電話機 100に与える。 The battery pack 150 includes a battery 151 and an electrode 152. The battery 151 supplies power necessary for each unit of the mobile phone 100 to perform processing. The electrode 152 is connected to the electrode 107 on the mobile phone 100 side and supplies power from the battery 151 to the mobile phone 100.
[0035] 一方、電池パック 160は、電池 151および電極 152の他に、アンテナ素子 161と、 R F処理部 162と、コネクタ 163と、をさらに有する。 On the other hand, battery pack 160 further includes antenna element 161, RF processing section 162, and connector 163 in addition to battery 151 and electrode 152.
[0036] アンテナ素子 161は、基地局 200から送信される無線信号を受信し、 RF処理部 16 2に出力する。また、アンテナ素子 161は、 RF処理部 162で所定の無線処理が施さ れた信号を基地局 200に送信する。 The antenna element 161 receives a radio signal transmitted from the base station 200 and outputs it to the RF processing unit 162. Further, the antenna element 161 transmits a signal subjected to predetermined radio processing by the RF processing unit 162 to the base station 200.
[0037] RF処理部 162は、アンテナ 161から入力される受信信号にダウンコンバート等の 所定の無線処理を行 、、無線帯域力 ベースバンド帯域の信号に周波数変換して、 コネクタ 163に出力する。また、 RF処理部 162は、携帯電話機 100から入力されるべ ースバンド信号にアップコンバート等の所定の無線処理を行い無線帯域の信号に変 換して、アンテナ素子 161に出力する。 The RF processing unit 162 performs predetermined radio processing such as down-conversion on the reception signal input from the antenna 161, converts the frequency to a radio band power baseband signal, and outputs the signal to the connector 163. Further, the RF processing unit 162 performs predetermined radio processing such as up-conversion on the baseband signal input from the mobile phone 100, converts the baseband signal into a radio band signal, and outputs the signal to the antenna element 161.
[0038] コネクタ 163は、携帯電話機 100側のコネクタ 104に接続する。そして、電池パック 160が携帯電話機 100に装着された場合に、コネクタ 163は、 RF処理部 162からの ベースバンド信号をコネクタ 104に出力する。また、コネクタ 163は、携帯電話機 100 力 入力されるベースバンド信号を RF処理部 162に出力する。 Connector 163 is connected to connector 104 on mobile phone 100 side. When battery pack 160 is attached to mobile phone 100, connector 163 outputs a baseband signal from RF processing unit 162 to connector 104. Connector 163 outputs a baseband signal input to mobile phone 100 to RF processing unit 162.
[0039] 次に、電池パックが装着された場合の携帯電話機 100の動作について説明する。 Next, the operation of mobile phone 100 when a battery pack is attached will be described.
[0040] 図 5Aに示すように、電池 151のみを備える通常の電池パック 150が携帯電話機 10 0に装着された場合には、検知部 108は、コネクタ 104を介して電池パック 150からの ベースバンド信号を検知できな 、ので、電池パック 150がアンテナ素子を有して!/、な いと判断する。この場合には、切替部 109は伝送方式を切り替えないので、制御部 1
05は BB信号処理部 103に対して、携帯電話機 100にあら力じめ備えたアンテナ素 子 101のみを用いるシングルアンテナ伝送モードでディジタル変復調処理を行うよう に指令を出す。そして、 BB信号処理部 103のシングルアンテナ変復調部 110は、送 信時には符号化処理および変調処理等を、受信時には復調処理および復号化処理 等を行い、 RF処理部 102で所定の無線処理を行い、携帯電話機 100にあら力じめ 備えたアンテナ素子 101のみを利用して通信を行う。 As shown in FIG. 5A, when a normal battery pack 150 including only the battery 151 is attached to the mobile phone 100, the detection unit 108 detects the baseband from the battery pack 150 via the connector 104. Since the signal cannot be detected, it is determined that the battery pack 150 has an antenna element! In this case, since the switching unit 109 does not switch the transmission method, the control unit 1 05 instructs the BB signal processing unit 103 to perform the digital modulation / demodulation processing in the single antenna transmission mode using only the antenna element 101 preliminarily provided in the mobile phone 100. The single antenna modulation / demodulation unit 110 of the BB signal processing unit 103 performs encoding processing and modulation processing during transmission, performs demodulation processing and decoding processing during reception, and the RF processing unit 102 performs predetermined radio processing. Communication is performed using only the antenna element 101 that is preferentially provided in the mobile phone 100.
[0041] また、電池パック 150の電池 151は、電極 152を介して携帯電話機 100に電力を供 給する。そして、携帯電話機 100の電源部 106は、電極 107を介して電力を取得す る。電源部 106は、取得した電力を制御部 105を介して各部に供給する。 In addition, the battery 151 of the battery pack 150 supplies power to the mobile phone 100 via the electrode 152. Then, the power supply unit 106 of the mobile phone 100 acquires power through the electrode 107. The power supply unit 106 supplies the acquired power to each unit via the control unit 105.
[0042] 一方、図 5Bに示すように、電池パック 160が携帯電話機 100に装着された場合に は、検知部 108は、コネクタ 104を介して電池パック 160からのベースバンド信号を 検知することができるので、電池パック 160がアンテナ素子 161を有していると判断 する。そして、検知部 108は、切替部 109が伝送方式をシングルアンテナ伝送モード カも自機のアンテナ素子 101および電池パック 160のアンテナ素子 161を用いるマ ルチアンテナ伝送モードに切り替えるように制御する。具体的には、電池パック 160 の外付けアンテナ素子 161から入力される受信信号は、 RF部 162で所定の無線処 理が施されベースバンド信号に変換され、このベースバンド信号は、コネクタ 163を 介して携帯電話機 100に出力される。そして、携帯電話機 100の検知部 108は、コ ネクタ 104を介して電池パック 160からのベースバンド信号を受信することにより、電 池パック 160がアンテナ素子 161を有すると判断し、切替部 109がシングルアンテナ 伝送モードからマルチアンテナ伝送モードに伝送方式を切り替えるように制御する。 そして、切替部 109は、検知部 108からの指示に従い、携帯電話機 100のアンテナ 素子 101のみを用いる伝送方式力も携帯電話機 100のアンテナ素子 101および電 池パック 160のアンテナ素子 161を用いる伝送方式に切り替える。 On the other hand, as shown in FIG. 5B, when battery pack 160 is attached to mobile phone 100, detection unit 108 can detect a baseband signal from battery pack 160 via connector 104. Therefore, it is determined that the battery pack 160 has the antenna element 161. The detection unit 108 controls the switching unit 109 to switch the transmission method to the multi-antenna transmission mode using the antenna element 101 of the own device and the antenna element 161 of the battery pack 160. Specifically, the received signal input from the external antenna element 161 of the battery pack 160 is subjected to predetermined radio processing by the RF unit 162 and converted into a baseband signal. This baseband signal is sent to the connector 163. Via the mobile phone 100. Then, the detection unit 108 of the mobile phone 100 receives the baseband signal from the battery pack 160 via the connector 104, thereby determining that the battery pack 160 has the antenna element 161, and the switching unit 109 is a single unit. Control to switch the transmission method from the antenna transmission mode to the multi-antenna transmission mode. The switching unit 109 then switches the transmission method power using only the antenna element 101 of the mobile phone 100 to the transmission method using the antenna element 101 of the mobile phone 100 and the antenna element 161 of the battery pack 160 according to the instruction from the detection unit 108. .
[0043] また、制御部 105は、電池パック 160が携帯電話機 100に装着されたことを、コネク タ 104および BB信号処理部 103を介して検知し、 BB信号処理部 103に対して、マ ルチアンテナ伝送モードでディジタル変復調処理を行うように指令を出す。そして、 携帯電話機 100は、自機 100にあら力じめ備えたアンテナ素子 101および電池パッ
ク 160の有する外付けアンテナ素子 161を利用して通信する。 [0043] Further, the control unit 105 detects that the battery pack 160 is attached to the mobile phone 100 via the connector 104 and the BB signal processing unit 103, and multi-controls the BB signal processing unit 103. A command is issued to perform digital modulation / demodulation processing in the antenna transmission mode. Then, the mobile phone 100 includes the antenna element 101 and the battery pack that are preferentially provided in the mobile device 100. Communication is performed using the external antenna element 161 of the link 160.
[0044] ここで、アンテナ素子 161を有する電池パック 160が装着された場合、携帯電話機 100が切り替えるマルチアンテナ伝送モードの一例として MIMO伝送を例に説明を する。 Here, MIMO transmission will be described as an example of a multi-antenna transmission mode that mobile phone 100 switches when battery pack 160 having antenna element 161 is attached.
[0045] 携帯電話機 100がアンテナ素子 161を有する電池パック 160の装着を検知し、シン ダルアンテナ伝送方式からマルチアンテナ伝送方式に切り替えると、マルチアンテナ 変復調部 111が MIMO伝送処理を行うために、携帯電話機 100は、 MIMO伝送の 準備が整ったという制御情報を基地局 200に通知する。 [0045] When the mobile phone 100 detects the attachment of the battery pack 160 having the antenna element 161 and switches from the cinder antenna transmission method to the multi-antenna transmission method, the multi-antenna modulation / demodulation unit 111 performs the MIMO transmission processing, Telephone 100 notifies base station 200 of control information indicating that preparation for MIMO transmission is complete.
[0046] 下りリンク通信の場合、基地局 200は、その内部で時空間符号ィ匕処理を行い、複数 のアンテナ素子を用いて MIMO送信する。携帯電話機 100は、基地局 200から複 数のアンテナ素子を用いて独立に送信された送信信号を、携帯電話機 100にあらか じめ備えたアンテナ素子 101および装着された電池パック 160の外付けアンテナ素 子 161により MIMO受信する。 MIMO受信された信号は、マルチアンテナ変復調部 111で、行列演算を行って送信アンテナ毎の信号に分離し、時空間復号化処理が 施されて受信データとなる。 [0046] In the case of downlink communication, base station 200 performs space-time code processing within it and performs MIMO transmission using a plurality of antenna elements. The mobile phone 100 uses the antenna element 101 provided in advance in the mobile phone 100 and the external antenna of the battery pack 160 attached to the transmission signal independently transmitted from the base station 200 using a plurality of antenna elements. Receive MIMO with element 161. A signal received by MIMO is subjected to matrix calculation in multi-antenna modulation / demodulation section 111 and separated into signals for each transmission antenna, and subjected to space-time decoding processing to be received data.
[0047] 一方、上りリンク通信の場合、マルチアンテナ変復調部 111は、送信データに時空 間符号ィ匕処理を行い、携帯電話機 100にあら力じめ備えたアンテナ素子 101および 電池パック 160の外付けアンテナ素子 161を用!、て MIMO送信する。基地局 200は 、携帯電話機 100から MIMO送信された送信信号をアンテナ毎の信号に分離し、時 空間復号化してデータを復号する。 On the other hand, in the case of uplink communication, multi-antenna modulation / demodulation section 111 performs space-time code processing on transmission data, and externally attaches antenna element 101 and battery pack 160 that are preliminarily provided in mobile phone 100. Use antenna element 161 to transmit MIMO. Base station 200 separates a transmission signal transmitted by MIMO from mobile phone 100 into a signal for each antenna, and decodes data by space-time decoding.
[0048] このように、本実施の形態によれば、電池パック 160等の外部機器を直接装着可能 な無線通信端末装置 100において、検知部 108は装着された電池パック 160がアン テナ素子を有する力否かを検知し、無線通信端末装置 100に直接装着された電池 ノ^ク 160がアンテナ素子 161を有すると検知された場合には、切替部 109は、無線 通信端末装置のアンテナ素子 101のみを用いる伝送方式力もこのアンテナ素子 101 および電池パック 160が有するアンテナ素子 161を用いる伝送方式に切り替える。そ の結果、無線通信端末装置 100は、同軸ケーブル等を用いる必要なく高周波回路( RF処理部 162)を備える電池パック 160を直接装着可能にしたことにより、簡易な装
着で同軸ケーブル内の信号の通過損失による無線特性の劣化を防止し、かつ高速 通信を行うことができる。 Thus, according to the present embodiment, in wireless communication terminal device 100 in which an external device such as battery pack 160 can be directly attached, detection unit 108 has battery element 160 in which attached battery pack 160 has an antenna element. When it is detected that the battery node 160 directly attached to the wireless communication terminal device 100 has the antenna element 161, the switching unit 109 only detects the antenna element 101 of the wireless communication terminal device. The transmission method power using the antenna is also switched to the transmission method using the antenna element 101 and the antenna element 161 included in the battery pack 160. As a result, the wireless communication terminal device 100 can be easily installed by directly attaching the battery pack 160 including the high frequency circuit (RF processing unit 162) without using a coaxial cable or the like. It is possible to prevent deterioration of radio characteristics due to signal loss in the coaxial cable and to perform high-speed communication.
[0049] また、無線通信端末装置は、電池パックに備えたアンテナ素子を利用することによ り、無線通信端末装置内にアンテナ素子の実装スペースを割くことなく高速通信を実 現することができる。 [0049] In addition, the wireless communication terminal device can realize high-speed communication without using the antenna element mounting space in the wireless communication terminal device by using the antenna element provided in the battery pack. .
[0050] また、本実施の形態において、無線通信端末装置 100の検知部 108が、当該無線 通信端末装置 100に装着された電池パック 160がアンテナ素子を有する力否かを検 知するとともに、当該電池パック 160が当該無線通信端末装置 100に電力を供給し ている力否かを検知するようにしてもよい。そして、当該電池パック 160がアンテナ素 子 161を有し、かつ電力を供給している場合には、切替部 109は、無線通信端末装 置 100のアンテナ素子 101のみを用いる伝送方式からこのアンテナ素子 101および 電池パック 160が有するアンテナ素子 161を用いる伝送方式に切り替える。これによ り、無線通信端末装置 100は、電力を供給状態で通信することができるので、消費電 力の心配をせずに高速通信を行うことができる。 [0050] In the present embodiment, the detection unit 108 of the wireless communication terminal device 100 detects whether or not the battery pack 160 attached to the wireless communication terminal device 100 has an antenna element. It may be detected whether or not the battery pack 160 is supplying power to the wireless communication terminal device 100. When the battery pack 160 has the antenna element 161 and supplies power, the switching unit 109 uses the antenna element from the transmission method using only the antenna element 101 of the wireless communication terminal apparatus 100. 101 and the battery pack 160 are switched to the transmission system using the antenna element 161. As a result, the wireless communication terminal apparatus 100 can perform communication while supplying power, and can perform high-speed communication without worrying about power consumption.
[0051] なお、携帯電話機 100に装着される電池パック 160のアンテナ素子 161の形状は、 平面状のアンテナが望ましい。また、アンテナ内蔵電池パック 160に複数のアンテナ 素子を内蔵する場合には、アンテナ素子間の結合による空間相関の増大を避けるた めに、アンテナ素子間の間隔を少なくとも半波長以上離して配置することが望ましい 。これにより、 MIMO伝送の品質を保つことができる。 [0051] Note that the antenna element 161 of the battery pack 160 attached to the mobile phone 100 is preferably a planar antenna. In addition, when multiple antenna elements are built in the battery pack with built-in antenna 160, in order to avoid an increase in spatial correlation due to coupling between the antenna elements, the distance between the antenna elements should be at least half a wavelength apart. Is desirable. Thereby, the quality of MIMO transmission can be maintained.
[0052] また、アンテナ素子 161の形状は、平面状のアンテナ以外でも、電池パック 160に 収納できる形状であればどのような形状でも良い。例えば、線状のアンテナやスロット アンテナなどを適用した場合、アンテナ素子 161を電池パック 160から突出させること ができるため、複数のアンテナ素子を離して配置しやす 、と 、う効果が得られる。 [0052] The shape of the antenna element 161 may be any shape as long as it can be stored in the battery pack 160 other than the planar antenna. For example, when a linear antenna, a slot antenna, or the like is applied, the antenna element 161 can be protruded from the battery pack 160, so that a plurality of antenna elements can be easily arranged apart from each other.
[0053] また、電池パック 160に複数のアンテナ素子を内蔵する場合には、複数のアンテナ 素子が誘導結合する程度にアンテナ素子間の間隔を狭めても良い。これにより、誘 導結合により空間相関の増大を避けることが可能であり、かつ、複数のアンテナ素子 を配置するスペースが確保しやすくなるという効果が得られる。 [0053] When a plurality of antenna elements are built in battery pack 160, the interval between the antenna elements may be narrowed to such an extent that the plurality of antenna elements are inductively coupled. As a result, it is possible to avoid an increase in spatial correlation due to inductive coupling, and to obtain an effect that it is easy to secure a space for arranging a plurality of antenna elements.
[0054] なお、本実施の形態では、電池パック 160に外付けアンテナ素子 161および RF処
理部 162を備えた構成としたが、携帯電話機 100の BB信号処理部 103の機能の一 部、例えば、直交変復調機能、 AZD変換機能、 DZA変換機能などを電池パック 1 60に備える構成としてもよい。これにより、携帯電話機 100と電池パック 160とのイン タフエースがディジタル信号となり、インタフェース仕様が簡単ィ匕できるという効果が 得られる。また、携帯電話機 100の消費電力の低減ィ匕および装置構成を簡易化する ことが可能となる。 In the present embodiment, battery pack 160 has external antenna element 161 and an RF treatment. The battery pack 160 may be configured to include some of the functions of the BB signal processing unit 103 of the mobile phone 100, such as a quadrature modulation / demodulation function, an AZD conversion function, and a DZA conversion function. Good. As a result, the interface between the mobile phone 100 and the battery pack 160 becomes a digital signal, and an effect that the interface specifications can be easily obtained is obtained. In addition, it is possible to reduce the power consumption of the mobile phone 100 and simplify the device configuration.
[0055] また、本実施の形態では、図 4Bに示したように、アンテナ内蔵電池パック 160は携 帯電話機 100の筐体に収容可能な大きさとしたが、携帯電話機 100に直接装着可 能な電池パックであれば、電池パックの大きさおよび装着形式等はこれに限定される ものではない。例えば、図 6に示すように、電池パック 310が自立できるような構造を 有し、これを折り畳みタイプの携帯電話機 300に装着してマルチアンテナ伝送を行う 構成としてもよい。図 6では、区別するためにアンテナ位置 311以外の部分に斜線を 印している。この場合、電池により多くの充電ができるため長時間通信が可能となり、 また、外付けアンテナ素子 311が手で覆われることがないため、アンテナ放射特性が 改善できるという効果が得られる。 In this embodiment, as shown in FIG. 4B, the battery pack 160 with a built-in antenna has a size that can be accommodated in the casing of the mobile phone 100, but can be directly attached to the mobile phone 100. In the case of a battery pack, the battery pack size and mounting type are not limited thereto. For example, as shown in FIG. 6, the battery pack 310 may have a structure that can stand on its own, and may be mounted on a foldable mobile phone 300 to perform multi-antenna transmission. In Fig. 6, the parts other than the antenna position 311 are hatched for distinction. In this case, since the battery can be charged more, it is possible to communicate for a long time, and since the external antenna element 311 is not covered with a hand, the antenna radiation characteristics can be improved.
[0056] また、本実施の形態では、マルチアンテナ伝送モードの一例として MIMO伝送を 用いて説明したが、例えば、 AAA伝送としてもよい。この場合、マルチアンテナ変復 調部 111ではビームフォーミングゃヌルステアリング処理が行われ、干渉波を抑圧す るという効果が得られる。この場合、携帯電話機 100にあら力じめ備えたアンテナ素 子 101と外付けアンテナ素子 161とは、 AAAによる指向性制御が可能となる程度( 半波長程度)まで近接させる必要がある。 [0056] In the present embodiment, the MIMO transmission is used as an example of the multi-antenna transmission mode. However, for example, AAA transmission may be used. In this case, the multi-antenna conversion / modulation unit 111 performs beam-forming / null steering processing to obtain an effect of suppressing the interference wave. In this case, the antenna element 101 and the external antenna element 161 that are preferentially provided in the mobile phone 100 need to be close to each other to the extent that directivity control by AAA is possible (about half wavelength).
[0057] さらにまた、シングルアンテナ伝送時は、携帯電話機 100にあら力じめ備えたアン テナ素子 101と外付けアンテナ素子 161とを電波環境に応じて動作させるアンテナ 切換ダイバーシチを利用してもよい。この場合、シングルアンテナ伝送時においても 、通信品質を改善できるという効果が得られる。 Furthermore, at the time of single antenna transmission, antenna switching diversity that operates antenna element 101 and external antenna element 161 that are preferentially provided in mobile phone 100 in accordance with the radio wave environment may be used. . In this case, it is possible to improve the communication quality even during single antenna transmission.
[0058] (実施の形態 2) [0058] (Embodiment 2)
上記実施の形態 1では、携帯電話機に電池パックが装着された場合を例に説明し た。本発明の実施の形態 2では、携帯電話機に充電器が装着された場合を例に説
明する。 In the first embodiment, the case where the battery pack is attached to the mobile phone has been described as an example. In Embodiment 2 of the present invention, a case where a charger is attached to a mobile phone will be described as an example. Light up.
[0059] 図 7は、本発明の実施の形態 2における携帯電話機 100の斜視図である。この携帯 電話機 100には、充電器 400が脱着自在に装着されて ヽる。 FIG. 7 is a perspective view of mobile phone 100 according to Embodiment 2 of the present invention. A charger 400 is detachably attached to the cellular phone 100.
[0060] 図 7に示すように、充電器 400には、複数の外付けアンテナ素子 401が直立して設 けられている。ここで、基地局 200と携帯電話機 100との通信は、 MIMO伝送とする 。そして、携帯電話機 100を充電器 400に固定すると、携帯電話機 100は充電器 40 0に装着されたことを検知し、携帯電話機 100にあらカゝじめ備えられたアンテナ素子 1 01に加え、携帯電話機 100に装着された充電器 400に備えられた外付けアンテナ 素子 401を利用して MIMO伝送を実現する。そして、携帯電話機 100で通信される データは、例えばケーブル 500を介してコンピュータ 550等で利用される。なお、外 付けアンテナ素子 401の形状および数量は、特に限定されるものではなぐ充電器 4 00に取り付けられることができれば良い。また、 MIMO伝送の品質を確保するため に、アンテナ素子間の間隔は半波長以上離して配置することが望ましい。 As shown in FIG. 7, the charger 400 is provided with a plurality of external antenna elements 401 upright. Here, communication between base station 200 and mobile phone 100 is MIMO transmission. When the mobile phone 100 is fixed to the charger 400, the mobile phone 100 detects that the mobile phone 100 is attached to the charger 400, and in addition to the antenna element 101 provided in the mobile phone 100, MIMO transmission is realized by using the external antenna element 401 provided in the charger 400 attached to the telephone 100. The data communicated with the mobile phone 100 is used by the computer 550 or the like via the cable 500, for example. Note that the shape and quantity of the external antenna element 401 are not particularly limited as long as they can be attached to the charger 400. Also, in order to ensure the quality of MIMO transmission, it is desirable that the antenna elements be spaced apart by more than half a wavelength.
[0061] 図 8は、本実施の形態における携帯電話機 100およびこの携帯電話機 100に直接 装着される充電器 400の構成の一例を示すブロック図である。なお、図 8の携帯電話 機 100は、図 5の携帯電話機 100と同じ構成であるため、その説明を省略する。 FIG. 8 is a block diagram showing an example of the configuration of mobile phone 100 and charger 400 directly attached to mobile phone 100 in the present embodiment. Note that the cellular phone device 100 in FIG. 8 has the same configuration as the cellular phone 100 in FIG.
[0062] 図 8に示すように、充電器 400は、外付けアンテナ素子 401と、信号をアップコンパ ート及びダウンコンバートする RF処理部 402と、コネクタ 403と、商用電源 420から供 給される交流電圧を直流電圧に変換して電池パック 430を充電する充電制御回路 4 04と、電極 405と、を備えて ヽる。 As shown in FIG. 8, charger 400 is supplied from external antenna element 401, RF processing unit 402 that up-converts and down-converts the signal, connector 403, and commercial power source 420. A charge control circuit 4004 for charging the battery pack 430 by converting AC voltage to DC voltage and an electrode 405 are provided.
[0063] アンテナ素子 401は、基地局 200から送信される無線信号を受信し、 RF処理部 40 2に出力する。また、アンテナ素子 401は、 RF処理部 402で所定の無線処理が施さ れた信号を、基地局 200に送信する。 The antenna element 401 receives a radio signal transmitted from the base station 200 and outputs it to the RF processing unit 402. In addition, the antenna element 401 transmits a signal that has been subjected to predetermined radio processing by the RF processing unit 402 to the base station 200.
[0064] RF処理部 402は、アンテナ素子 401から入力される受信信号に、ダウンコンバート 等の所定の無線処理を行 、、無線帯域力 ベースバンド帯域の信号に周波数変換 して、携帯電話機 100に出力する。また、 RF処理部 402は、装着した携帯電話機 10 0から入力されるベースバンド信号にアップコンバート等の所定の無線処理を行い無 線帯域の信号に変換して、アンテナ素子に 401に出力する。
[0065] コネクタ 403は、携帯電話機 100側のコネクタ 104と接続する。そして、充電器 400 が携帯電話機 100に装着された場合に、コネクタ 403は、 RF処理部 402からのべ一 スバンド信号をコネクタ 104に出力する。また、コネクタ 403は、携帯電話機 100から 入力されるベースバンド信号を RF処理部 402に出力する。 [0064] The RF processing unit 402 performs predetermined radio processing such as down-conversion on the received signal input from the antenna element 401, converts the frequency into a radio baseband signal, and converts the frequency into a mobile phone 100. Output. Also, the RF processing unit 402 performs predetermined radio processing such as up-conversion on the baseband signal input from the attached mobile phone 100 to convert it to a radio band signal, and outputs it to the antenna element 401. Connector 403 is connected to connector 104 on mobile phone 100 side. When charger 400 is attached to mobile phone 100, connector 403 outputs the baseband signal from RF processing unit 402 to connector 104. Connector 403 outputs a baseband signal input from mobile phone 100 to RF processing section 402.
[0066] 充電制御回路 404は、充電器 400に接続される外部の商用電源 420から供給され る交流電圧を直流電圧に変換して、電池パック 430を充電する。電極 405は、電池 パック 430側のコネクタに接続し、充電制御回路 404からの電力を電池パック 430に 出力する。 Charge control circuit 404 converts AC voltage supplied from external commercial power supply 420 connected to charger 400 into DC voltage, and charges battery pack 430. The electrode 405 is connected to a connector on the battery pack 430 side, and outputs power from the charge control circuit 404 to the battery pack 430.
[0067] 電池パック 430は、電極 431、電池 432および電極 433を有する。 The battery pack 430 includes an electrode 431, a battery 432, and an electrode 433.
[0068] 電極 431は、充電器 400の電極 405と接続し、充電器 400から供給される電力を電 池 432〖こ出力する。電池 432は、電極 431を介して充電される電力を、携帯電話機 1 00に供給する。電極 433は、携帯電話機 100側の電極 107に接続し、電池 432から の電力を携帯電話機 100に出力する。 [0068] The electrode 431 is connected to the electrode 405 of the charger 400, and outputs the power supplied from the charger 400 to the battery 432. The battery 432 supplies power charged through the electrode 431 to the mobile phone 100. The electrode 433 is connected to the electrode 107 on the mobile phone 100 side and outputs power from the battery 432 to the mobile phone 100.
[0069] 次に、充電器 400が装着された場合の携帯電話機 100の動作について説明する。 Next, the operation of mobile phone 100 when charger 400 is attached will be described.
[0070] 充電器 400が携帯電話機 100に直接装着された場合には、検知部 108は、コネク タ 104を介して充電器 400からベースバンド信号を検知することができるので、充電 器 400がアンテナ素子 401を有していると判断する。そして、検知部 108は、切替部 109が伝送方式をシングルアンテナ伝送モードから自機のアンテナ素子 101および 充電器 400のアンテナ素子 401を用いるマルチアンテナ伝送モードに切り替えるよう に制御する。具体的には、充電器 400の外付けアンテナ素子 401から入力される受 信信号は、 RF処理部 402で所定の無線処理が施されベースバンド信号に変換され 、このベースバンド信号は、コネクタ 403を介して携帯電話機 100に出力される。そし て、携帯電話機 100の検知部 108は、コネクタ 104を介して充電器 400からのベース バンド信号を受信することにより、充電器 400がアンテナ素子 401を有すると判断し、 切替部 109がシングルアンテナ伝送モード力もマルチアンテナ伝送モードに伝送方 式を切り替えるように制御する。そして、切替部 109は、検知部 108からの指示に従 い、携帯電話機 100のアンテナ素子 401のみを用いる伝送方式力も携帯電話機 10 0のアンテナ素子 101および充電器 400のアンテナ素子 401を用いる伝送方式に切
り替える。 [0070] When charger 400 is directly attached to mobile phone 100, detection unit 108 can detect a baseband signal from charger 400 via connector 104, so that charger 400 is an antenna. It is determined that the element 401 is included. Then, the detection unit 108 controls the switching unit 109 to switch the transmission method from the single antenna transmission mode to the multi-antenna transmission mode using the antenna element 101 of the own device and the antenna element 401 of the charger 400. Specifically, the received signal input from the external antenna element 401 of the charger 400 is subjected to predetermined radio processing by the RF processing unit 402 and converted into a baseband signal. Is output to the mobile phone 100. Then, the detection unit 108 of the mobile phone 100 receives the baseband signal from the charger 400 via the connector 104, thereby determining that the charger 400 has the antenna element 401, and the switching unit 109 has a single antenna. The transmission mode force is also controlled to switch the transmission method to the multi-antenna transmission mode. Then, according to the instruction from the detection unit 108, the switching unit 109 uses only the antenna element 401 of the mobile phone 100 and the transmission method using the antenna element 101 of the mobile phone 100 and the antenna element 401 of the charger 400. Cut into Replace.
[0071] そして、制御部 105は、充電器 400が携帯電話機 100に装着されたことを、コネクタ 104および BB信号処理部 103を介して検知し、 BB信号処理部 103に対して、マル チアンテナ伝送モードで変復調処理をおこなうように指令を出す。そして、マルチア ンテナ変復調部 111は MIMO伝送に対応したディジタル変復調処理を行 ヽ、携帯 電話機 100にあら力じめ備えたアンテナ素子 101および充電器 400に備えられた外 付けアンテナ素子 401を利用して通信する。なお、マルチアンテナ伝送モードの一 例としての MIMO伝送の動作は、上記実施の形態 1に示した内容と同様であるので 、その詳細な説明は省略する。 [0071] Then, control unit 105 detects that charger 400 is attached to mobile phone 100 via connector 104 and BB signal processing unit 103, and transmits a multi-antenna to BB signal processing unit 103. Command to perform modulation / demodulation processing in mode. Then, the multi-antenna modulation / demodulation unit 111 performs digital modulation / demodulation processing corresponding to MIMO transmission, and uses the antenna element 101 provided in the mobile phone 100 and the external antenna element 401 provided in the charger 400. connect. Note that the operation of MIMO transmission as an example of the multi-antenna transmission mode is the same as that described in Embodiment 1 above, and thus detailed description thereof is omitted.
[0072] また、充電制御回路 404は、充電器 400の外部の商用電源 420から入力される交 流電源を直流電源に変換し、電極 405を介して電池パック 430を充電する。電池パ ック 430の電池 432〖こは、電極 431を介して、充電器 400からの電力が充電される。 充電された電力は、電極 433を介して携帯電話機 100に供給される。 In addition, charging control circuit 404 converts AC power input from commercial power supply 420 outside charger 400 into DC power, and charges battery pack 430 through electrode 405. The battery 432 in the battery pack 430 is charged with electric power from the charger 400 via the electrode 431. The charged electric power is supplied to the mobile phone 100 through the electrode 433.
[0073] 一方、電源を供給することのみを目的とする通常の充電器が携帯電話機 100に直 接装着された場合には、検知部 108は、コネクタ 104を介して充電器力ゝらのベースバ ンド信号を検知できな 、ので、装着された充電器がアンテナ素子を有して 、な 、と判 断する。すなわち、この場合には、切替部 109は伝送方式を切り替えないので、携帯 電話機 100のアンテナ素子 101のみを用いるシングルアンテナ伝送モードにより通 信を行う。この場合の携帯電話機 100の動作については、上記実施の形態 1で示し た携帯電話機の動作と同様であるので、その詳細な説明は省略する。 [0073] On the other hand, when a normal charger only for supplying power is directly attached to the mobile phone 100, the detection unit 108 is connected to the base unit of the charger power through the connector 104. Since it is not possible to detect the signal, it is determined that the attached charger has an antenna element. That is, in this case, the switching unit 109 does not switch the transmission method, and therefore performs communication in the single antenna transmission mode using only the antenna element 101 of the mobile phone 100. Since the operation of the mobile phone 100 in this case is the same as the operation of the mobile phone shown in the first embodiment, detailed description thereof is omitted.
[0074] このように、本実施の形態によれば、充電器 400等の外部機器が装着可能な無線 通信端末装置 100において、検知部 108は装着された充電器 400がアンテナ素子 を有するか否かを検知し、無線通信端末装置 400に直接装着された充電器 400が アンテナ素子 401を有すると検知した場合には、切替部 109は、無線通信端末装置 100のアンテナ素子 101のみを用いる伝送方式からこのアンテナ素子 101および充 電器 400が有するアンテナ素子 401を用いる伝送方式に切り替える。その結果、無 線通信端末装置 100は、同軸ケーブル等を用いる必要なく高周波回路 (RF処理部 402)を備える充電器 400を直接装着可能にしたことにより、簡易な装着で同軸ケー
ブル内の信号の通過損失による無線特性の劣化を防止し、かつ高速通信を行うこと ができる。 Thus, according to the present embodiment, in wireless communication terminal device 100 in which an external device such as charger 400 can be attached, detection unit 108 determines whether or not attached charger 400 has an antenna element. When the charger 400 directly attached to the wireless communication terminal device 400 detects that it has the antenna element 401, the switching unit 109 uses only the antenna element 101 of the wireless communication terminal device 100. Therefore, the transmission system is switched to the transmission system using the antenna element 401 included in the antenna element 101 and the charger 400. As a result, the wireless communication terminal device 100 enables the direct attachment of the charger 400 having a high-frequency circuit (RF processing unit 402) without using a coaxial cable or the like. It is possible to prevent radio characteristics from being deteriorated due to the loss of signal passing through the cable and to perform high-speed communication.
[0075] また、無線通信端末装置 100は、充電器 400に備えられたアンテナ素子 401を利 用することにより、無線通信端末装置 100内にアンテナ素子の実装スペースを割くこ となく高速通信を実現することができる。 [0075] In addition, wireless communication terminal device 100 uses antenna element 401 provided in charger 400 to achieve high-speed communication without occupying the antenna element mounting space in wireless communication terminal device 100. can do.
[0076] また、本実施の形態において、無線通信端末装置 100の検知部 108が、当該無線 通信端末装置 100に装着された充電器 400がアンテナ素子 401を有する力否かを 検知するとともに、当該充電器 400が当該無線通信端末装置 100に電力を充電して いる力否かを検知するようにしてもよい。そして、当該充電器 400がアンテナ素子 40 1を有し、かつ電力を充電している場合には、切替部 109は、無線通信端末装置 10 0のアンテナ素子 101のみを用いる伝送方式からこのアンテナ素子 101および充電 器 400が有するアンテナ素子 401を用いる伝送方式に切り替える。これにより、無線 通信端末装置 100は、充電状態で通信することができるため、電力消費量の多い高 速通信に伴う電池切れを防止するとともに長時間の通信を行うことができる。 Further, in the present embodiment, detection unit 108 of wireless communication terminal apparatus 100 detects whether or not charger 400 attached to wireless communication terminal apparatus 100 has the antenna element 401, and You may make it detect whether the charger 400 is the force which is charging the radio | wireless communication terminal device 100 with electric power. When the charger 400 has the antenna element 40 1 and is charging power, the switching unit 109 uses the antenna element from the transmission method using only the antenna element 101 of the wireless communication terminal device 100. 101 and the transmission system using the antenna element 401 of the charger 400 are switched. As a result, wireless communication terminal apparatus 100 can communicate in a charged state, so that it is possible to prevent battery exhaustion associated with high-speed communication with a large amount of power consumption and perform long-time communication.
[0077] なお、本実施の形態では、充電器 400に外付けアンテナ素子 401と RF処理部 402 を備えた構成としたが、携帯電話機 100の BB信号処理部 103の機能の一部、例え ば、直交変復調機能、 AZD変棚能、 DZA変棚能などを充電器 400に備える 構成としてもよい。この場合、携帯電話機 100と充電器 400とのインタフェースがディ ジタル信号となり、インタフェース仕様が簡単ィ匕できるという効果が得られる。 [0077] In the present embodiment, charger 400 includes external antenna element 401 and RF processing unit 402. However, a part of the functions of BB signal processing unit 103 of mobile phone 100, for example, The charger 400 may have a quadrature modulation / demodulation function, AZD shelving capability, DZA shelving capability, and the like. In this case, an interface between the mobile phone 100 and the charger 400 becomes a digital signal, and an effect that the interface specification can be easily obtained is obtained.
[0078] また、本実施の形態では、マルチアンテナ伝送モードの一例として MIMO伝送を 挙げたが、 AAA伝送としてもよい。この場合、上記実施の形態 1の効果に加えて、一 般に、充電器 400はアンテナ実装スペースが広いため、アンテナ素子数を多く配置 することができる。従って、アンテナ素子数を増やすことにより、指向性のヌル点も増 やすことが可能となるため、干渉波を抑圧する性能が向上するという効果が得られる In this embodiment, MIMO transmission is exemplified as an example of the multi-antenna transmission mode. However, AAA transmission may be used. In this case, in addition to the effect of the first embodiment described above, charger 400 generally has a large antenna mounting space, so that a large number of antenna elements can be arranged. Therefore, by increasing the number of antenna elements, it is possible to increase the null point of directivity, and the effect of improving the performance of suppressing interference waves can be obtained.
[0079] また、シングルアンテナ伝送時は、携帯電話機 100にあら力じめ備えたアンテナ素 子 101と外付けアンテナ素子 101とを電波環境に応じて動作させるアンテナ切換ダ ィバーシチを利用してもよい。この場合、シングルアンテナ伝送時においても、通信
品質を改善できるという効果が得られる。 [0079] Also, when transmitting a single antenna, antenna switching diversity may be used in which the antenna element 101 and the external antenna element 101 preferentially provided in the mobile phone 100 are operated according to the radio wave environment. . In this case, even during single antenna transmission, communication The effect that quality can be improved is obtained.
[0080] (実施の形態 3) [0080] (Embodiment 3)
上記実施の形態 1および 2では、無線通信端末装置は、装着された外部機器のァ ンテナ素子の有無を検知して、外部機器がアンテナ素子を有する場合には、自装置 のアンテナ素子のみを用いるシングルアンテナ伝送方式力 この自装置のアンテナ 素子および外部機器のアンテナ素子を用いるマルチアンテナ伝送方式に切り替えて 通信を行った。本発明の実施の形態 3では、無線通信端末装置は、装着された外部 機器のアンテナ素子の有無を検知して、外部機器がアンテナ素子を有する場合には 、 自装置のアンテナ素子のみを用いる MIMO伝送方式力 この自装置のアンテナ 素子および外部機器のアンテナ素子を用いる MIMO伝送方式に切り替えて通信を 行う。以下、図面を参照して、本発明の実施の形態 3に係る携帯電話機について説 明する。 In Embodiments 1 and 2 above, the wireless communication terminal device detects the presence or absence of an antenna element of an attached external device, and when the external device has an antenna element, only the antenna element of its own device is used. Single antenna transmission system power We switched to the multi-antenna transmission system using the antenna element of this device and the antenna element of the external device. In Embodiment 3 of the present invention, the wireless communication terminal apparatus detects the presence or absence of an antenna element of an attached external device, and when the external apparatus has an antenna element, MIMO only uses the antenna element of its own apparatus. Transmission method power Switch to the MIMO transmission method that uses the antenna element of this device and the antenna element of the external device for communication. Hereinafter, a cellular phone according to Embodiment 3 of the present invention will be described with reference to the drawings.
[0081] 図 9は、本発明の実施の形態 3における無線通信端末装置の一例である携帯電話 機 600の斜視図である。この携帯電話機 600には、脱着可能な外部機器の一例であ る電池パックが装着されて ヽる。 FIG. 9 is a perspective view of mobile phone device 600 that is an example of the wireless communication terminal apparatus according to Embodiment 3 of the present invention. The mobile phone 600 is equipped with a battery pack which is an example of an external device that can be attached and detached.
[0082] 図 9は、アンテナ素子 601およびアンテナ素子 602を有する携帯電話機 600が基 地局 700と MIMO伝送を行う状態を示している。具体的には、図 9Aに示すように、 携帯電話機 600に、通常の電池パック 150が直接装着された場合には、携帯電話機 600は、この電池パック 150がアンテナ素子を有しないと判断し、当該携帯電話機 6 00にあらかじめ備えた 2本のアンテナ素子 601および 602と、基地局 700に備えた 2 本のアンテナ素子と、で通信を行う。すなわち、携帯電話機 600と基地局 700とは、 それぞれアンテナ素子を 2本ずつ用いることにより、所謂 2 X 2の MIMO伝送を行う。 FIG. 9 shows a state where mobile phone 600 having antenna element 601 and antenna element 602 performs MIMO transmission with base station 700. Specifically, as shown in FIG. 9A, when a normal battery pack 150 is directly attached to the mobile phone 600, the mobile phone 600 determines that the battery pack 150 does not have an antenna element, Communication is performed between the two antenna elements 601 and 602 provided in advance in the mobile phone 600 and the two antenna elements provided in the base station 700. That is, mobile phone 600 and base station 700 each perform so-called 2 × 2 MIMO transmission by using two antenna elements.
[0083] 一方、 図 9Bに示すように、携帯電話機 600に電池パック 660が直接装着された場 合には、携帯電話機 600は、この電池パック 660がアンテナ素子 661およびアンテナ 素子 662を有していると判断し、基地局 700との通信を、 自機 600のアンテナ素子 6 01および 602のみを用いる伝送モード、すなわち 2 X 2の MIMO伝送方式から、携 帯電話機 600にあらかじめ備えたアンテナ素子 601および 602にカ卩え、電池パック 6 60の 2本のアンテナ素子 661および 662を用いる伝送モードに切り替える。すなわち
、携帯電話機 600と基地局 700とは、それぞれアンテナ素子を 4本ずつ用いること〖こ より、 4 X 4の MIMO伝送を行い、より高速な通信を可能にする。 On the other hand, as shown in FIG. 9B, when battery pack 660 is directly attached to mobile phone 600, mobile phone 600 includes mobile phone 600 having antenna element 661 and antenna element 662. Therefore, communication with the base station 700 is performed in the transmission mode that uses only the antenna elements 6001 and 602 of its own device 600, that is, the 2 × 2 MIMO transmission method, and the antenna element 601 provided in the mobile phone 600 in advance. And switch to the transmission mode using the two antenna elements 661 and 662 of the battery pack 660. Ie The mobile phone 600 and the base station 700 each use four antenna elements, thereby performing 4 × 4 MIMO transmission and enabling higher-speed communication.
[0084] 図 10は、本発明の実施の形態 3における携帯電話機 600およびこの携帯電話機 6 00に直接装着される電池パックの構成の一例を示すブロック図である。なお、図 10 の携帯電話機および電池パックの構成部分において、図 5の携帯電話機および電 池パックと共通の構成部分については、同一の符番を付して説明を省略する。 FIG. 10 is a block diagram showing an example of the configuration of mobile phone 600 and the battery pack directly attached to mobile phone 600 according to Embodiment 3 of the present invention. Note that, in the components of the cellular phone and the battery pack in FIG. 10, the same components as those in the cellular phone and the battery pack in FIG.
[0085] まず、携帯電話機 600の構成について説明する。 First, the configuration of mobile phone 600 will be described.
[0086] 携帯電話機 600は、 2本のアンテナ素子 601および 602と、信号をアップコンバート 及びダウンコンバートする RF部 603および 604と、ディジタル変復調を行う BB信号 処理部 605と、コネクタ 606と、携帯電話機 600の動作を制御する制御部 607と、電 源部 106と、電極 107と、を有する。 [0086] A mobile phone 600 includes two antenna elements 601 and 602, an RF unit 603 and 604 that up-converts and down-converts a signal, a BB signal processing unit 605 that performs digital modulation / demodulation, a connector 606, and a mobile phone A control unit 607 that controls the operation of 600, a power supply unit 106, and an electrode 107 are included.
[0087] アンテナ素子 601およびアンテナ素子 602は、基地局 700のアンテナ素子毎に独 立して送信される無線信号をそれぞれ受信し、 RF処理部 603および RF処理部 604 に出力する。また、アンテナ素子 601およびアンテナ素子 602は、 RF処理部 603お よび RF処理部 604で所定の無線処理が施された信号を基地局 700にそれぞれ送 信する。 [0087] Antenna element 601 and antenna element 602 each receive a radio signal transmitted independently for each antenna element of base station 700, and output it to RF processing section 603 and RF processing section 604. In addition, antenna element 601 and antenna element 602 transmit signals that have been subjected to predetermined radio processing by RF processing unit 603 and RF processing unit 604, to base station 700, respectively.
[0088] RF処理部 603および RF処理部 604は、アンテナ素子 601およびアンテナ素子 60 2からそれぞれ入力される受信信号にダウンコンバート等の所定の無線処理を行い、 無線帯域力 ベースバンド帯域の信号に周波数変換して BB信号処理部 605に出力 する。また、 RF処理部 603および RF処理部 604は、 BB信号処理部 605から入力さ れる変調信号にアップコンバート等の所定の無線処理を行い、ベースバンド帯域から 無線帯域の信号に周波数変換してアンテナ素子 601およびアンテナ素子 602にそ れぞれ出力する。 [0088] The RF processing unit 603 and the RF processing unit 604 perform predetermined radio processing such as down-conversion on the reception signals respectively input from the antenna element 601 and the antenna element 602, and thereby convert the radio band power into a baseband signal. The frequency is converted and output to the BB signal processing unit 605. Further, the RF processing unit 603 and the RF processing unit 604 perform predetermined radio processing such as up-conversion on the modulation signal input from the BB signal processing unit 605, and perform frequency conversion from a baseband band to a radio band signal to perform antenna conversion. Outputs to element 601 and antenna element 602, respectively.
[0089] BB信号処理部 605は、 MIMO伝送するための時空間符号化および時空間復号 化等の処理を行う。すなわち、 BB信号処理部 605は、 RF処理部 603および RF処理 部 604でそれぞれ無線処理が施された信号に対して、 AZD変換処理、復調処理お よび時空間復号化処理を行!ヽ、それぞれのアンテナ素子から送信された受信データ を取得する。また、 BB信号処理部 605は、送信データに対して、 DZA変換処理、
時空間符号化処理および変調処理を行!、、それぞれのアンテナ素子から送信する 信号に分離して、 RF処理部 603および RF処理部 604に出力する。なお、 BB信号 処理部 605の具体的な構成については、後述する。 [0089] The BB signal processing unit 605 performs processing such as space-time coding and space-time decoding for MIMO transmission. That is, the BB signal processing unit 605 performs AZD conversion processing, demodulation processing, and space-time decoding processing on the signals subjected to radio processing by the RF processing unit 603 and the RF processing unit 604, respectively. Receive data transmitted from the antenna element. In addition, the BB signal processing unit 605 performs DZA conversion processing on transmission data, The space-time coding process and the modulation process are performed, separated into signals to be transmitted from the respective antenna elements, and output to the RF processing unit 603 and the RF processing unit 604. The specific configuration of the BB signal processing unit 605 will be described later.
[0090] コネクタ 606は、電池パック等の外部機器側のコネクタと接続する。そして、携帯電 話機 600に外部機器が装着された場合には、コネクタ 606は、外部機器の装着を検 知して、検知結果を BB信号処理部 605に出力する。また、コネクタ 606は、 BB信号 処理部 605からのベースバンド信号を、装着された外部機器に出力する。 The connector 606 is connected to a connector on the external device side such as a battery pack. When an external device is attached to the mobile phone 600, the connector 606 detects the attachment of the external device and outputs the detection result to the BB signal processing unit 605. The connector 606 outputs the baseband signal from the BB signal processing unit 605 to the attached external device.
[0091] 制御部 607は、 BB信号処理部 605および電源部 106等の携帯電話機 600の各部 を制御する。 Control unit 607 controls each unit of mobile phone 600 such as BB signal processing unit 605 and power supply unit 106.
[0092] 次に、 BB信号処理部 605について、具体的に説明する。 Next, the BB signal processing unit 605 will be specifically described.
[0093] BB信号処理部 605は、検知部 608と、切替部 609と、 2 X 2MIMO変復調部610 と、4 X 4MIMO変復調部611と、を有する。 The BB signal processing unit 605 includes a detection unit 608, a switching unit 609, a 2 × 2MIMO modulation / demodulation unit 610, and a 4 × 4MIMO modulation / demodulation unit 611.
[0094] 検知部 608は、コネクタ 606を介して携帯電話機 600に直接装着された外部機器 がアンテナ素子を有する力否かを検知し、検知結果を切替部 609に出力する。具体 的には、検知部 608は、外部機器がアンテナ素子を有しない場合には、 2 X 2MIM O伝送モード、すなわち、自機のアンテナ素子のみを用いる 2 X 2MIMO伝送方式 に切り替えるように切替部 609に指示する。また、検知部 608は、外部機器がアンテ ナ素子を有する場合には、 4 X 4MIMO伝送モード、すなわち、自機のアンテナ素子 および外部機器のアンテナ素子を用いる 4 X 4MIMO伝送方式に切り替えるように 切替部 609に指示する。 Detection unit 608 detects whether or not an external device directly attached to mobile phone 600 via connector 606 has an antenna element, and outputs the detection result to switching unit 609. Specifically, when the external device does not have an antenna element, the detection unit 608 switches to a 2 X 2 MIMO transmission mode, that is, a 2 X 2 MIMO transmission method using only the antenna element of the own device. Direct to 609. In addition, when the external device has an antenna element, the detection unit 608 switches to 4 X 4 MIMO transmission mode, that is, to switch to the 4 X 4 MIMO transmission method using the antenna element of the own device and the antenna element of the external device. Direct to Part 609.
[0095] 切替部 609は、検知部 608からの検知結果に従!、、 RF処理部 603および RF処理 部 604との接続先を、 2 X 2MIMO変復調部 610または4 X 4MIMO変復調部611 に切り替える。具体的には、切替部 609は、検知結果が 2 X 2MIMO伝送モードであ れば接続先を 2 X 2MIMO変復調部 610に切り替え、検知結果力 X 4MIMO伝送 モードであれば接続先を 4 X 4MIMO変復調部 611に切り替える。 [0095] Switching unit 609 switches the connection destination of RF processing unit 603 and RF processing unit 604 to 2 X 2 MIMO modulation / demodulation unit 610 or 4 X 4 MIMO modulation / demodulation unit 611 according to the detection result from detection unit 608! . Specifically, the switching unit 609 switches the connection destination to the 2 X 2 MIMO modulation / demodulation unit 610 if the detection result is 2 X 2 MIMO transmission mode, and the connection destination to 4 X 4 MIMO if the detection result force X 4 MIMO transmission mode. Switch to modem 611.
[0096] 2 X 2MIMO変復調部610は、アンテナを 2本使用して 2 X 2の MIMO伝送を行う ために、時空間符号化および時空間復号化等の処理を行う。すなわち、 2 X 2MIM O変復調部 610は、送信データに対して、時空間符号化処理を行い、時空間符号化
後の信号に変調処理を施し変調信号を生成する。そして、 2 X 2MIMO変復調部 61 0は、この変調信号に DZ A変換を行い、 RF処理部 603および RF処理部 604にそ れぞれ出力する。また、 2 X 2MIMO変復調部 610は、 RF処理部 603および RF処 理部 604からそれぞれ入力される受信信号に AZD変換を行いディジタル信号に変 換し、アンテナごとの信号に分離する。そして、 2 X 2MIMO変復調部 610は、アンテ ナごとに分離された信号に復調処理を施し復調信号を生成し、この復調信号に時空 間復号処理を行 、受信データを取得する。 [0096] 2 X 2 MIMO modulation / demodulation section 610 performs processing such as space-time coding and space-time decoding in order to perform 2 X 2 MIMO transmission using two antennas. That is, 2 X 2MIM O modulation / demodulation unit 610 performs space-time coding processing on transmission data, and performs space-time coding. The subsequent signal is modulated to generate a modulated signal. Then, the 2 × 2MIMO modulation / demodulation unit 610 performs DZA conversion on the modulated signal and outputs the result to the RF processing unit 603 and the RF processing unit 604, respectively. Further, 2 × 2MIMO modulation / demodulation section 610 performs AZD conversion on the received signals input from RF processing section 603 and RF processing section 604, converts them into digital signals, and separates them into signals for each antenna. Then, 2 × 2MIMO modulation / demodulation section 610 performs demodulation processing on the signal separated for each antenna to generate a demodulated signal, performs time-space decoding processing on this demodulated signal, and obtains received data.
[0097] 4 X 4MIMO変復調部611は、アンテナを 4本使用して 4 X 4の MIMO伝送を行う ために、時空間符号化および時空間復号化等の処理を行う。すなわち、 4 X 4MIM O変復調部 611は、送信データに対して、時空間符号化処理を行い、時空間符号化 後の信号に変調処理を施し変調信号を生成する。そして、 4 X 4MIMO変復調部 61 1は、この変調信号に DZ A変換を行い、 RF処理部 603、 RF処理部 604および外 部機器の RF処理部にそれぞれ出力する。また、4 X 4MIMO変復調部611は、 RF 処理部 603、 RF処理部 604および外部機器の RF処理部からそれぞれ入力される 受信信号に AZD変換を行 ヽディジタル信号に変換し、アンテナごとの信号に分離 する。そして、 4 X 4MIMO変復調部611は、アンテナごとに分離された信号に復調 処理を施し復調信号を生成し、この復調信号に時空間復号化処理を行 ヽ受信デー タを取得する。 [0097] In order to perform 4 X 4 MIMO transmission using four antennas, 4 X 4 MIMO modulation / demodulation section 611 performs processing such as space-time coding and space-time decoding. That is, 4 × 4MIM modulation / demodulation section 611 performs space-time coding processing on transmission data, and modulates the signal after space-time coding to generate a modulated signal. Then, 4 × 4 MIMO modulation / demodulation unit 6111 performs DZ A conversion on this modulated signal, and outputs the result to RF processing unit 603, RF processing unit 604, and RF processing unit of the external device. The 4 X 4 MIMO modulation / demodulation unit 611 performs AZD conversion on the received signals respectively input from the RF processing unit 603, the RF processing unit 604, and the RF processing unit of the external device, and converts them into digital signals. To separate. Then, 4 × 4 MIMO modulation / demodulation section 611 performs demodulation processing on the signal separated for each antenna to generate a demodulated signal, and performs space-time decoding processing on the demodulated signal to obtain received data.
[0098] 次に、上記構成を有する携帯電話機 600に脱着自在に装着される電池パック 660 の構成について説明する。 Next, the configuration of battery pack 660 that is detachably attached to mobile phone 600 having the above configuration will be described.
[0099] 電池パック 660は、アンテナ素子 661と、アンテナ素子 662と、 RF処理部 663と、 R F処理咅 664と、 =3才、クタ 665と、電池 151と、電極 152と、を有する。 Battery pack 660 includes antenna element 661, antenna element 662, RF processing unit 663, RF processing unit 664, = 3 years old, Kuta 665, battery 151, and electrode 152.
[0100] アンテナ素子 661およびアンテナ素子 662は、基地局 700からそれぞれ独立して 送信される信号を受信し、 RF処理部 663および RF処理部 664にそれぞれ出力する 。また、アンテナ素子 661およびアンテナ素子 662は、 RF処理部 663および RF処理 部 664でそれぞれ所定の無線処理が施された信号を基地局 700にそれぞれ送信す る。 [0100] Antenna element 661 and antenna element 662 receive signals transmitted independently from base station 700, and output the signals to RF processing section 663 and RF processing section 664, respectively. In addition, antenna element 661 and antenna element 662 transmit signals that have been subjected to predetermined radio processing by RF processing section 663 and RF processing section 664, to base station 700, respectively.
[0101] RF処理部 663および RF処理部 664は、アンテナ素子 661およびアンテナ素子 66
2からそれぞれ入力される受信信号にダウンコンバート等の所定の無線処理を行い、 無線帯域力もベースバンド帯域の信号に周波数変換して、コネクタ 665に出力する。 また、 RF処理部 663および RF処理部 664は、携帯電話機 600から入力されるべ一 スバンド信号にアップコンバート等の所定の無線処理を行!、、ベースバンド帯域から 無線帯域の信号に周波数変換して、アンテナ素子 661およびアンテナ素子 662にそ れぞれ出力する。 [0101] The RF processing unit 663 and the RF processing unit 664 are the antenna element 661 and the antenna element 66. The received signals input from 2 are subjected to predetermined radio processing such as down-conversion, and the radio band power is also frequency-converted to a baseband signal and output to the connector 665. Also, the RF processing unit 663 and the RF processing unit 664 perform predetermined radio processing such as up-conversion on the baseband signal input from the mobile phone 600, and frequency-convert the baseband band to the radio band signal. Are output to antenna element 661 and antenna element 662, respectively.
[0102] コネクタ 665は、携帯電話機 600側のコネクタ 606と接続する。そして、電池パック 6 60が携帯電話機 600に装着された時に、コネクタ 665は、 RF処理部 663および RF 処理部 664からのベースバンド信号をコネクタ 606に出力する。また、コネクタ 665は 、携帯電話機 600から入力されるベースバンド信号を RF処理部 663および RF処理 部 664に出力する。 [0102] Connector 665 is connected to connector 606 on mobile phone 600 side. When battery pack 660 is attached to mobile phone 600, connector 665 outputs the baseband signals from RF processing unit 663 and RF processing unit 664 to connector 606. The connector 665 outputs a baseband signal input from the mobile phone 600 to the RF processing unit 663 and the RF processing unit 664.
[0103] 次に、電池パックが装着された場合の携帯電話機 600の動作について説明する。 Next, the operation of mobile phone 600 when a battery pack is attached will be described.
[0104] 図 10Aに示すように、電池 151のみを備えた通常の電池パック 150が携帯電話機 600に直接装着された場合には、検知部 608は、コネクタ 606を介して電池パック 15 0からのベースバンド信号を検知できな!/、ので、電池パック 150がアンテナ素子を有 していないと判断する。この場合には、切替部 609は伝送方式を切り替えないので、 制御部 607は、 BB信号処理部 605に対して、携帯電話機 600にあら力じめ備えられ たアンテナ素子 601およびアンテナ素子 602のみを用いる 2 X 2の MIMO伝送モー ドでディジタル変復調を行うように指令を出す。そして、 BB信号処理部 605の 2 X 2 MIMO変復調部 610は、 MIMO送信時には時空間符号ィ匕処理等の信号処理を行 い、また MIMO受信時には時空間復号化処理等の信号処理を行い、携帯電話機 6 00にあらかじめ備えた 2本のアンテナ素子 601および 602のみを利用して MIMO通 信を行う。 As shown in FIG. 10A, when a normal battery pack 150 including only the battery 151 is directly attached to the mobile phone 600, the detection unit 608 is connected to the battery pack 150 via the connector 606. Since the baseband signal cannot be detected! /, It is determined that the battery pack 150 does not have an antenna element. In this case, since the switching unit 609 does not switch the transmission method, the control unit 607 has only the antenna element 601 and the antenna element 602 provided in the mobile phone 600 with respect to the BB signal processing unit 605. Commands to perform digital modulation / demodulation in the 2 X 2 MIMO transmission mode used. The 2 × 2 MIMO modulation / demodulation unit 610 of the BB signal processing unit 605 performs signal processing such as space-time code processing during MIMO transmission, and performs signal processing such as space-time decoding processing during MIMO reception, MIMO communication is performed using only the two antenna elements 601 and 602 provided in advance in the mobile phone 600.
[0105] 一方、図 10Bに示すように、電池パック 660が携帯電話機 600に直接装着された 場合には、検知部 608は、コネクタ 606を介して電池パック 660からのベースバンド 信号を検知することができるので、電池パック 660がアンテナ素子を有して 、ると判 断する。そして、検知部 608は、切替部 609が伝送方式を自機のアンテナ素子のみ を用いる 2 X 2MIMO伝送モードから自機のアンテナ素子および電池パック 660のァ
ンテナ素子を用いる 4 X 4MIMO伝送モードに切り替えるように制御する。具体的に は、電池パック 660の外付けアンテナ素子 661およびアンテナ素子 662から入力さ れる受信信号は、 RF処理部 663および RF処理部 664でそれぞれ所定の無線処理 が施されベースバンド信号に変換され、このベースバンド信号は、コネクタ 665を介し て携帯電話機 600に出力される。そして、携帯電話機 600の検知部 608は、コネクタ 606を介してベースバンド信号を受信することにより、電池パック 660がアンテナ素子 661およびアンテナ素子 662を有すると判断し、切替部 609が 2 X 2MIMO伝送モ 一ドカも 4 X 4MIMO伝送モードに伝送方式を切り替えるように制御する。そして、切 替部 609は、検知部 608からの指示に従い、携帯電話機 600のアンテナ素子 601お よび 602のみを用いる 2 X 2MIMO伝送方式から携帯電話機 600のアンテナ素子 6 01および 602と、電池パック 660のアンテナ素子 661およびアンテナ素子 662とを用 V、る 4 X 4MIMO伝送方式に切り替える。 On the other hand, as shown in FIG. 10B, when battery pack 660 is directly attached to mobile phone 600, detection unit 608 detects a baseband signal from battery pack 660 via connector 606. Therefore, it is determined that the battery pack 660 has an antenna element. Then, the detection unit 608 switches the antenna unit of the own device and the battery pack 660 from the 2 X 2 MIMO transmission mode in which the switching unit 609 uses only the antenna element of the own device as the transmission method. Control to switch to 4 X 4 MIMO transmission mode using antenna elements. Specifically, received signals input from the external antenna element 661 and antenna element 662 of the battery pack 660 are subjected to predetermined radio processing by the RF processing unit 663 and the RF processing unit 664, respectively, and converted into baseband signals. The baseband signal is output to mobile phone 600 via connector 665. Then, the detection unit 608 of the mobile phone 600 receives the baseband signal via the connector 606, thereby determining that the battery pack 660 has the antenna element 661 and the antenna element 662, and the switching unit 609 transmits 2 X 2 MIMO transmission. The mode controller is also controlled to switch the transmission method to 4 X 4 MIMO transmission mode. Then, in accordance with an instruction from detection unit 608, switching unit 609 uses antenna elements 601 and 602 of mobile phone 600 and uses 2 X 2 MIMO transmission system to change antenna elements 6 01 and 602 of mobile phone 600, and battery pack 660. The antenna element 661 and the antenna element 662 are switched to V, 4 X 4 MIMO transmission system.
[0106] そして、制御部 607は、電池パック 660が携帯電話機 600に装着されたことを、コネ クタ 606および BB信号処理部 605を介して検知し、 BB信号処理部 605に対して、 4 X 4の MIMO伝送モードでディジタル変復調を行うように指令を出す。そして、携帯 電話機 600は、自機 600にあらかじめ備えた 2本のアンテナ素子 601および 602と、 2本の外付けアンテナ素子 661および 662とを利用して MIMO通信を行う。 Then, the control unit 607 detects that the battery pack 660 is attached to the mobile phone 600 via the connector 606 and the BB signal processing unit 605, and performs 4 X on the BB signal processing unit 605. Command to perform digital modulation / demodulation in 4 MIMO transmission modes. Then, mobile phone 600 performs MIMO communication using two antenna elements 601 and 602 provided in advance in own device 600 and two external antenna elements 661 and 662.
[0107] 具体的には、まず、携帯電話機 600は 4 X 4の MIMO伝送の準備が整ったという制 御情報を基地局 700に通知する。 Specifically, first, mobile phone 600 notifies base station 700 of control information indicating that preparation for 4 × 4 MIMO transmission is complete.
[0108] 下りリンク通信の場合、基地局装置 700は、その内部で時空間符号ィ匕処理を行い、 4本のアンテナ素子を用いてそれぞれ独立の送信信号を MIMO送信する。携帯電 話機 600は、携帯電話機 600にあら力じめ備えた 2本のアンテナ素子 601および 60 2と、 2本の外付けアンテナ素子 661および 662とにより基地局からの送信信号を Ml MO受信する。そして、4 X 4MIMO変復調部611は、受信信号に対して行列演算 を行ってアンテナ毎の信号に分離して、時空間復号ィ匕を行 、受信データを取得する [0108] In the case of downlink communication, base station apparatus 700 performs space-time code processing within the base station apparatus, and performs MIMO transmission of independent transmission signals using four antenna elements. The mobile phone 600 receives Ml MO signals transmitted from the base station by using two antenna elements 601 and 60 2 and two external antenna elements 661 and 662 that are provided on the mobile phone 600. . Then, 4 × 4 MIMO modulation / demodulation section 611 performs matrix operation on the received signal and separates it into a signal for each antenna, performs space-time decoding, and acquires received data
[0109] 一方、上りリンク通信の場合、携帯電話機 600は、 4 X 4MIMO変復調部 611で 4 [0109] On the other hand, in the case of uplink communication, the mobile phone 600 uses the 4 X 4 MIMO modulation / demodulation unit 611.
X 4の MIMO伝送モードにて時空間符号ィ匕処理を行い、携帯電話機 600にあら力じ
め備えた 2本のアンテナ素子 601および 602と、 2本の外付けアンテナ素子 661およ び 662とを用いてそれぞれ独立の送信信号を MIMO送信する。基地局 700は、その 内部で 4 X 4の MIMO伝送モードにて時空間復号ィ匕することにより、データを復号す る。 Performs space-time code processing in the X4 MIMO transmission mode, and can be used for mobile phone 600. Two independent antenna elements 601 and 602 and two external antenna elements 661 and 662 are used for MIMO transmission. Base station 700 decodes data by space-time decoding in 4 × 4 MIMO transmission mode.
[0110] このように、本実施の形態によれば、電池パック 660等の外部機器が直接装着可能 な無線通信端末装置 600にお 、て、検知部 608は装着された電池パック 660がアン テナ素子を有する力否かを検知し、無線通信端末装置 600に直接装着された電池 ノック 660がアンテナ素子 601およびアンテナ素子 602を有すると検知された場合 には、切替部 609は、無線通信端末装置のアンテナ素子 601およびアンテナ素子 6 02のみを用いる 2 X 2MIMO伝送方式からこのアンテナ素子 661および 662と、電 池パック 660が有するアンテナ素子 661およびアンテナ素子 662と、を用いる 4 X 4 MIMO伝送方式に切り替える。その結果、無線通信端末装置 600は、同軸ケープ ル等を用いる必要なく高周波回路 (RF処理部 663および RF処理部 664)を備える 電池パック 660を直接装着可能にしたことにより、簡易な装着で同軸ケーブル内の信 号の通過損失による無線特性の劣化を防止するとともに、より高速な通信を行うこと ができる。 As described above, according to the present embodiment, in wireless communication terminal device 600 to which an external device such as battery pack 660 can be directly attached, detection unit 608 has an attached battery pack 660 as an antenna. When it is detected that the battery knock 660 directly attached to the wireless communication terminal device 600 has the antenna element 601 and the antenna element 602, the switching unit 609 From the 2 X 2 MIMO transmission system using only the antenna element 601 and the antenna element 6 02 to the 4 X 4 MIMO transmission system using the antenna elements 661 and 662 and the antenna elements 661 and 662 of the battery pack 660. Switch. As a result, the wireless communication terminal device 600 is not required to use a coaxial cable or the like, and the battery pack 660 having a high-frequency circuit (RF processing unit 663 and RF processing unit 664) can be directly mounted. In addition to preventing the deterioration of radio characteristics due to signal loss in the cable, higher-speed communication can be performed.
[0111] また、無線通信端末装置 600は、電池パック 660に備えたアンテナ素子 661および アンテナ素子 662を利用することにより、無線通信端末装置 600内にアンテナ素子 の実装スペースを割くことなく高速通信を実現することができる。 [0111] In addition, wireless communication terminal device 600 uses antenna element 661 and antenna element 662 provided in battery pack 660 to perform high-speed communication without allocating the antenna element mounting space in wireless communication terminal device 600. Can be realized.
[0112] また、本実施の形態において、無線通信端末装置 600の検知部 608が、当該無線 通信端末装置 600に装着された電池パック 660がアンテナ素子を有する力否かを検 知するとともに、当該電池パック 660が当該無線通信端末装置 600に電力を供給し ている力否かを検知するようにしてもよい。そして、当該電池パック 660がアンテナ素 子を有し、かつ電力を供給している場合には、切替部 609は、無線通信端末装置 60 0のアンテナ素子 601およびアンテナ素子 602のみを用いる 2 X 2MIMO伝送方式 力もこのアンテナ素子 601および 602と、電池パック 660が有するアンテナ素子 661 およびアンテナ素子 662とを用いる 4 X 4MIMO伝送方式に切り替える。これにより、 無線通信端末装置 600は、電力を供給状態で通信することができるので、消費電力
の心配をせずに高速通信を行うことができる。 Further, in the present embodiment, detection unit 608 of radio communication terminal apparatus 600 detects whether or not battery pack 660 attached to radio communication terminal apparatus 600 has a power of an antenna element, and It may be detected whether the battery pack 660 is capable of supplying power to the wireless communication terminal device 600. When the battery pack 660 has an antenna element and supplies power, the switching unit 609 uses only the antenna element 601 and the antenna element 602 of the wireless communication terminal device 600. The transmission system force is also switched to the 4 × 4 MIMO transmission system using the antenna elements 601 and 602 and the antenna elements 661 and 662 of the battery pack 660. As a result, the wireless communication terminal device 600 can communicate with the power supplied, so that the power consumption High-speed communication can be performed without worrying about.
[0113] なお、携帯電話機 600に装着される電池パック 660のアンテナ素子 661および 66 2の形状は、平面状のアンテナが望ましい。また、アンテナ内蔵電池パック 660に複 数のアンテナ素子を内蔵する場合には、アンテナ素子間の結合による空間相関の増 大を避けるために、アンテナ素子間の間隔を少なくとも半波長以上離して配置するこ とが望ましい。これにより、 MIMO伝送の品質を保つことができる。 [0113] Note that the antenna elements 661 and 662 of the battery pack 660 attached to the mobile phone 600 are preferably planar antennas. When multiple antenna elements are built in the battery pack with built-in antenna 660, the spacing between the antenna elements should be separated by at least a half wavelength or more to avoid an increase in spatial correlation due to coupling between the antenna elements. This is desirable. Thereby, the quality of MIMO transmission can be maintained.
[0114] また、アンテナ素子 661および 662の形状は、平面状のアンテナ以外でも、電池パ ック 660に収納できる形状であればどのような形状でも良い。例えば、線状のアンテ ナゃスロットアンテナなどを適用した場合、アンテナ素子を電池パック 660から突出さ せることができるため、複数のアンテナ素子を離して配置しやすいという効果が得ら れる。 [0114] Further, the antenna elements 661 and 662 may have any shape other than the planar antenna as long as it can be stored in the battery pack 660. For example, when a linear antenna slot antenna or the like is applied, the antenna element can be protruded from the battery pack 660, so that an effect of easily disposing a plurality of antenna elements can be obtained.
[0115] また、電池パック 660に複数のアンテナ素子を内蔵する場合には、複数のアンテナ 素子が誘導結合する程度にアンテナ素子間の間隔を狭めても良い。これにより、誘 導結合により空間相関の増大を避けることが可能であり、かつ、複数のアンテナ素子 を配置するスペースが確保しやすくなるという効果が得られる。 [0115] When a plurality of antenna elements are built in battery pack 660, the distance between the antenna elements may be narrowed to such an extent that the plurality of antenna elements are inductively coupled. As a result, it is possible to avoid an increase in spatial correlation due to inductive coupling, and to obtain an effect that it is easy to secure a space for arranging a plurality of antenna elements.
[0116] なお、本実施の形態では、電池パック 660に外付けアンテナ素子 661および 662と 、 RF部 663および RF処理部 664とを備えた構成とした力 携帯電話機 600の BB信 号処理部 605の機能の一部、例えば、直交変復調機能、 AZD変換機能、 DZA変 浦能などを電池パック 660に備える構成としてもよい。これにより、携帯電話機 600 と電池パック 660とのインタフェースがディジタル信号となり、インタフェース仕様が簡 単ィ匕できるという効果が得られる。また、携帯電話機 600の消費電力の低減ィ匕および 装置構成を簡易化することが可能となる。 In the present embodiment, the battery pack 660 includes the external antenna elements 661 and 662, the RF unit 663, and the RF processing unit 664. The battery pack 660 may have a part of the functions, for example, a quadrature modulation / demodulation function, an AZD conversion function, a DZA conversion function, and the like. As a result, the interface between the mobile phone 600 and the battery pack 660 becomes a digital signal, and the effect that the interface specifications can be simplified is obtained. In addition, it is possible to reduce the power consumption of mobile phone 600 and to simplify the device configuration.
[0117] また、本実施の形態では、図 9Bに示したように、アンテナ内蔵電池パック 660は Ml MO携帯電話機 600の筐体に収容可能な大きさとしたが、携帯電話機 600に直接装 着可能な電池パックであれば、電池パックの大きさおよび装着形式等はこれに限定 されるものではない。例えば、図 11に示すように、電池パック 810が自立できるような 構造を有し、これを折り畳みタイプの携帯電話機 800に装着して、携帯電話機 800の アンテナ素子 801およびアンテナ素子 802と、電池パック 810のアンテナ素子 811お
よびアンテナ素子 812とを用 V、る 4 X 4の MIMO伝送を行う構成としてもよ 、。この場 合、電池に、より多くの充電ができるため長時間通信が可能となり、また、外付けアン テナ素子 811および 812が手で覆われることがないため、アンテナ放射特性が改善 できるという効果が得られる。 [0117] In the present embodiment, as shown in FIG. 9B, the battery pack 660 with a built-in antenna is sized to be accommodated in the case of the Ml MO mobile phone 600, but can be directly attached to the mobile phone 600. As long as it is a simple battery pack, the size and mounting type of the battery pack are not limited thereto. For example, as shown in FIG. 11, the battery pack 810 has a structure that can stand on its own, and is attached to a folding-type mobile phone 800, and the antenna element 801 and antenna element 802 of the mobile phone 800 are connected to the battery pack. 810 antenna elements 811 The antenna element 812 can be used for V, 4 x 4 MIMO transmission. In this case, since the battery can be charged more, communication is possible for a long time, and since the external antenna elements 811 and 812 are not covered with hands, the antenna radiation characteristics can be improved. can get.
[0118] さらにまた、本実施の形態では、下りリンク通信および上りリンク通信の双方とも 2 X [0118] Furthermore, in this embodiment, both downlink communication and uplink communication are 2 X.
2の MIMO伝送または 4 X 4の MIMO伝送としたが、 BB信号処理部 605に MIMO 伝送時のアンテナ本数の切り替え機能を追加して、例えば、下りリンク通信力 X 4の MIMO伝送、上りリンク通信が 2 X 2の MIMO伝送というように、下りリンク通信と上り リンク通信とで MIMO伝送時のアンテナ本数セットが異なっても良い。この場合、不 要な通信容量増大を避けることができ、また、 MIMO携帯電話機および基地局の消 費電力が小さくできるという効果が得られる。 2 MIMO transmission or 4 X 4 MIMO transmission, but the BB signal processing unit 605 has a function of switching the number of antennas during MIMO transmission, for example, downlink transmission power X 4 MIMO transmission, uplink communication As in 2 x 2 MIMO transmission, the number of antenna sets for MIMO transmission may differ between downlink and uplink communications. In this case, an unnecessary increase in communication capacity can be avoided, and the power consumption of the MIMO mobile phone and the base station can be reduced.
[0119] (実施の形態 4) [Embodiment 4]
上記実施の形態 3では、携帯電話機に電池パックが装着された場合を例に説明し た。本発明の実施の形態 4では、携帯電話機に充電器が装着された場合を例に説 明する。 In the third embodiment, the case where the battery pack is attached to the mobile phone has been described as an example. In Embodiment 4 of the present invention, a case where a charger is attached to a mobile phone will be described as an example.
[0120] 図 12は、本発明の実施の形態 4における携帯電話機 600の斜視図である。この携 帯電話機 600には、充電器 900が脱着自在に装着されて 、る。 FIG. 12 is a perspective view of mobile phone 600 according to Embodiment 4 of the present invention. A charger 900 is detachably attached to the mobile phone 600.
[0121] 図 12に示すように、充電器 900には、 2本の外付けアンテナ素子 901およびアンテ ナ素子 902が直立して設けられている。ここで、基地局装置 700と携帯電話機 600と の通信は MIMO伝送とする。そして、携帯電話機 600を充電器 900に固定すると、 携帯電話機 600は、充電器 900に接続されたことを検知し、携帯電話機 600にあら 力じめ備えられた 2本のアンテナ素子 601および 602に加え、携帯電話機 600に装 着された充電器 900に備えられた 2本の外付けアンテナ素子 901および 902を利用 して 4 X 4の MIMO伝送を実現する。そして、携帯電話機 600で通信されるデータは 、例えばケーブル 1000を介してコンピュータ 1100で利用される。なお、外付けアン テナ素子 901および 902の形状および数量は、特に限定されるものではなぐ充電 器 900に取り付け可能であればどのようなものでも良い。また、 MIMO伝送の品質を 確保するために、アンテナ素子間の間隔は半波長以上離して配置することが望まし
い。 As shown in FIG. 12, the charger 900 is provided with two external antenna elements 901 and antenna elements 902 standing upright. Here, communication between base station apparatus 700 and mobile phone 600 is assumed to be MIMO transmission. When the mobile phone 600 is fixed to the charger 900, the mobile phone 600 detects that the mobile phone 600 is connected to the charger 900, and the two antenna elements 601 and 602 provided in the mobile phone 600 are preliminarily provided. In addition, 4 × 4 MIMO transmission is realized by using the two external antenna elements 901 and 902 provided in the charger 900 attached to the mobile phone 600. The data communicated with the mobile phone 600 is used by the computer 1100 via the cable 1000, for example. The external antenna elements 901 and 902 may have any shape and quantity as long as they can be attached to the charger 900 without being particularly limited. Also, in order to ensure the quality of MIMO transmission, it is desirable that the antenna elements be spaced apart by more than half a wavelength. Yes.
[0122] 図 13は、本発明の実施の形態 4における携帯電話機 600およびこの携帯電話機 6 00に装着される充電器 900の構成の一例を示すブロック図である。なお、図 13の携 帯電話機 600は、図 10の携帯電話機と同じ構成であるため、その説明を省略する。 また、図 13の充電器および電池パックの構成部分において、図 8の充電器および電 池パックと共通する構成部分については、同じ符番を付し説明を省略する。 FIG. 13 is a block diagram showing an example of the configuration of mobile phone 600 and charger 900 attached to mobile phone 600 according to Embodiment 4 of the present invention. Note that the mobile phone 600 in FIG. 13 has the same configuration as that of the mobile phone in FIG. Further, in the components of the charger and battery pack in FIG. 13, the same components as those in the charger and battery pack of FIG.
[0123] 図 13に示す充電器 900は、複数の外付けアンテナ素子 901および 902と、信号を アップコンバート及びダウンコンバートする RF部 903および RF部 904と、コネクタ 90 5と、商用電源 420から供給される交流電圧を直流電圧に変換して電池 430を充電 する充電制御回路 404と、電極 405と、を備えている。 The charger 900 shown in FIG. 13 is supplied from a plurality of external antenna elements 901 and 902, an RF unit 903 and an RF unit 904 that up-convert and down-convert signals, a connector 905, and a commercial power source 420. A charging control circuit 404 for charging the battery 430 by converting the AC voltage to be converted into a DC voltage, and an electrode 405.
[0124] アンテナ素子 901およびアンテナ素子 902は、基地局 700からそれぞれ独立して 送信される信号を受信し、 RF処理部 903および RF処理部 904にそれぞれ出力する 。また、アンテナ素子 901およびアンテナ素子 902は、 RF処理部 903および RF処理 部 904でそれぞれ所定の無線処理が施された信号を基地局 700にそれぞれ送信す る。 [0124] Antenna element 901 and antenna element 902 receive signals transmitted independently from base station 700, and output the signals to RF processing section 903 and RF processing section 904, respectively. In addition, antenna element 901 and antenna element 902 transmit signals that have been subjected to predetermined radio processing in RF processing section 903 and RF processing section 904, to base station 700, respectively.
[0125] RF処理部 903および RF処理部 904は、アンテナ素子 901およびアンテナ素子 90 2からそれぞれ入力される受信信号にダウンコンバート等の所定の無線処理を行い、 無線帯域力もベースバンド帯域の信号に周波数変換して、コネクタ 905に出力する。 また、 RF処理部 903および RF処理部 904は、携帯電話機 600から入力されるべ一 スバンド信号にアップコンバート等の所定の無線処理を行!、、ベースバンド帯域から 無線帯域の信号に周波数変換して、アンテナ素子 901およびアンテナ素子 902にそ れぞれ出力する。 [0125] The RF processing unit 903 and the RF processing unit 904 perform predetermined radio processing such as down-conversion on the reception signals input from the antenna element 901 and the antenna element 902, respectively, The frequency is converted and output to the connector 905. Also, the RF processing unit 903 and the RF processing unit 904 perform predetermined radio processing such as up-conversion on the baseband signal input from the mobile phone 600 and frequency-convert the baseband band to the radio band signal. Are output to the antenna element 901 and the antenna element 902, respectively.
[0126] コネクタ 905は、携帯電話機 600側のコネクタ 606と接続する。そして、充電器 900 が携帯電話機 600に装着された時に、コネクタ 905は、 RF処理部 903および RF処 理部 904からのベースバンド信号をコネクタ 606に出力する。また、コネクタ 905は、 携帯電話機 600から入力されるベースバンド信号を RF処理部 903および RF処理部 904に出力する。 Connector 905 is connected to connector 606 on mobile phone 600 side. When the charger 900 is attached to the mobile phone 600, the connector 905 outputs the baseband signal from the RF processing unit 903 and the RF processing unit 904 to the connector 606. Connector 905 outputs a baseband signal input from mobile phone 600 to RF processing section 903 and RF processing section 904.
[0127] 次に、充電器 900が装着された場合の携帯電話機 600の動作について説明する。
[0128] 充電器 900が携帯電話機 600に直接装着された場合には、検知部 608は、コネク タ 606を介して充電器 900からのベースバンド信号を検知することができるので、充 電器 900がアンテナ素子を有していると判断する。そして、検知部 608は、切替部 60 9が伝送方式を自機のアンテナ素子のみを用いる 2 X 2MIMO伝送モードから自機 のアンテナ素子および電池パック 660のアンテナ素子を用いる 4 X 4MIMO伝送モ ードに切り替えるように制御する。具体的には、充電器 900の外付けアンテナ素子 9 01およびアンテナ素子 902から入力される受信信号は、 RF処理部 903および RF処 理部 904でそれぞれ所定の無線処理が施されベースバンド信号に変換され、このべ ースバンド信号は、コネクタ 905を介して携帯電話機 600に出力される。そして、携帯 電話機 600の検知部 608は、コネクタ 606を介してベースバンド信号を受信すること により、充電器 900がアンテナ素子 901およびアンテナ素子 902を有すると判断し、 切替部 609が 2 X 2MIMO伝送モードから 4 X 4MIMO伝送モードに伝送方式を切 り替えるように制御する。そして、切替部 609は、検知部 608からの指示に従い、携 帯電話機 600のアンテナ素子 601および 602のみを用いる 2 X 2MIMO伝送方式か ら携帯電話機 600のアンテナ素子 601および 602と、充電器 900のアンテナ素子 90 1およびアンテナ素子 902とを用いる 4 X 4MIMO伝送方式に切り替える。 Next, the operation of mobile phone 600 when charger 900 is attached will be described. [0128] When the charger 900 is directly attached to the mobile phone 600, the detection unit 608 can detect the baseband signal from the charger 900 via the connector 606. It is determined that the antenna element is included. Then, the detection unit 608 uses the antenna unit of the own device and the antenna element of the battery pack 660 from the 2 X 2 MIMO transmission mode in which the switching unit 609 uses only the antenna element of the own unit as a transmission method. 4 X 4 MIMO transmission mode Control to switch to. Specifically, the received signals input from the external antenna element 9001 and the antenna element 902 of the charger 900 are subjected to predetermined radio processing by the RF processing unit 903 and the RF processing unit 904, respectively, and converted into baseband signals. The converted baseband signal is output to the mobile phone 600 via the connector 905. Then, the detection unit 608 of the mobile phone 600 receives the baseband signal via the connector 606, thereby determining that the charger 900 has the antenna element 901 and the antenna element 902, and the switching unit 609 transmits 2 X 2 MIMO transmission. Control to switch the transmission method from the mode to the 4 X 4 MIMO transmission mode. Then, in accordance with the instruction from the detection unit 608, the switching unit 609 uses the antenna elements 601 and 602 of the mobile phone 600 from the 2 X 2 MIMO transmission method using only the antenna elements 601 and 602 of the mobile phone 600 and the charger 900. Switch to 4 X 4 MIMO transmission system using antenna element 90 1 and antenna element 902.
[0129] そして、制御部 607は、充電器 900が携帯電話機 600に装着されたことを、コネクタ 606および BB信号処理部 605を介して検知し、 BB信号処理部 605に対して、 4 X 4 の MIMO伝送モードでディジタル変復調を行うように指令を出す。そして、携帯電話 機 600は、自機 600にあらかじめ備えた 2本のアンテナ素子 601および 602と、 2本 の外付けアンテナ素子 901および 902とを利用して MIMO通信を行う。なお、 4 X 4 の MIMO伝送の具体的な動作については、実施の形態 1および 2に示した動作と同 じであるので、その詳細な説明は省略する。 Then, the control unit 607 detects that the charger 900 is attached to the mobile phone 600 via the connector 606 and the BB signal processing unit 605, and 4 X 4 for the BB signal processing unit 605. Command to perform digital modulation and demodulation in MIMO transmission mode. Then, mobile phone device 600 performs MIMO communication using two antenna elements 601 and 602 provided in advance in own device 600 and two external antenna elements 901 and 902. Note that the specific operation of 4 × 4 MIMO transmission is the same as that described in Embodiments 1 and 2, and thus detailed description thereof is omitted.
[0130] 一方、充電することのみを目的とする通常の充電器が携帯電話機 600に直接装着 された場合には、検知部 608は、コネクタ 606を介して充電器力 のベースバンド信 号を検知できな 、ので、装着された充電器がアンテナ素子を有して 、な 、と判断す る。すなわち、この場合には、切替部 609は伝送方式を切り替えないので、携帯電話 機 600は、基地局 700のアンテナ素子 2本と携帯電話機 600にあら力じめ備えた 2本
のアンテナ素子 601および 602とで 2 X 2の MIMO伝送を行う。この場合の携帯電話 機 600の動作については、上記実施の形態 3で示した携帯電話機の動作と同様であ るので、その詳細な説明は省略する。 [0130] On the other hand, when a normal charger intended only for charging is directly attached to the mobile phone 600, the detection unit 608 detects the baseband signal of the charger power via the connector 606. Since it is not possible, it is determined that the attached charger has an antenna element. That is, in this case, since the switching unit 609 does not switch the transmission method, the mobile phone 600 has two antenna elements of the base station 700 and two mobile phones 600 that are preliminarily provided. The antenna elements 601 and 602 perform 2 X 2 MIMO transmission. The operation of mobile phone device 600 in this case is the same as the operation of the mobile phone shown in the third embodiment, and a detailed description thereof will be omitted.
[0131] このように、本実施の形態によれば、充電器 900等の外部機器が直接装着可能な 無線通信端末装置 600にお 、て、検知部 608は装着された充電器 900がアンテナ 素子を有するか否かを検知し、無線通信端末装置 600に直接装着された充電器 90 0がアンテナ素子 901およびアンテナ素子 902を有すると検知された場合には、切替 部 609は、無線通信端末装置 600のアンテナ素子 601およびアンテナ素子 602の みを用いる 2 X 2MIMO伝送方式からこのアンテナ素子 601および 602と、充電器 9 00が有するアンテナ素子 901およびアンテナ素子 902と、を用いる 4 X 4MIMO伝 送方式に切り替える。その結果、無線通信端末装置 600は、同軸ケーブル等を用い る必要なく高周波回路 (RF処理部 903および RF処理部 904)を備える充電器 900を 直接装着可能にしたことにより、簡易な装着で同軸ケーブル内の信号の通過損失に よる無線特性の劣化を防止するとともに、より高速な通信を行うことができる。 As described above, according to the present embodiment, in wireless communication terminal device 600 to which an external device such as charger 900 can be directly attached, detection unit 608 has attached charger 900 as an antenna element. When the charger 90 0 directly attached to the wireless communication terminal device 600 is detected to have the antenna element 901 and the antenna element 902, the switching unit 609 displays the wireless communication terminal device 600. 4 X 4 MIMO transmission system using this antenna element 601 and 602, and antenna element 901 and antenna element 902 of charger 900 from 2 X 2 MIMO transmission system using only 600 antenna elements 601 and 602 Switch to. As a result, the wireless communication terminal device 600 can be directly connected to the charger 900 having a high-frequency circuit (RF processing unit 903 and RF processing unit 904) without using a coaxial cable or the like. The wireless characteristics can be prevented from deteriorating due to signal loss in the cable, and higher-speed communication can be performed.
[0132] また、無線通信端末装置 600は、充電器 900に備えたアンテナ素子 901およびァ ンテナ素子 902を利用することにより、無線通信端末装置 600内にアンテナ素子の 実装スペースを割くことなく高速通信を実現することができる。 [0132] Further, wireless communication terminal apparatus 600 uses antenna element 901 and antenna element 902 provided in charger 900, so that high-speed communication can be achieved without occupying a space for mounting antenna elements in wireless communication terminal apparatus 600. Can be realized.
[0133] また、本実施の形態において、無線通信端末装置 600の検知部 608が、当該無線 通信端末装置 600に装着された充電器 900がアンテナ素子を有する力否かを検知 するとともに、当該充電器 900が当該無線通信端末装置 600に電力を充電して 、る か否かを検知するようにしてもよい。そして、当該充電器 900がアンテナ素子を有し、 かつ電力を充電している場合には、切替部 609は、無線通信端末装置 600のアンテ ナ素子 601およびアンテナ素子 602のみを用いる 2 X 2MIMO伝送方式からこのァ ンテナ素子 601および 602と、充電器 900が有するアンテナ素子 901およびアンテ ナ素子 902とを用いる 4 X 4MIMO伝送方式に切り替える。これにより、無線通信端 末装置 600は、電力を充電状態で通信することができるので、消費電力の心配をせ ずに長時間の高速通信を行うことができるとともに、電力消費量の多い MIMO通信 に伴う電池切れを防止することができる。
[0134] なお、本実施の形態では、充電器 900に外付けアンテナ素子 901および 902と RF 処理部 903および 904とを備えた構成としたが、携帯電話機 600の BB信号処理部 6 05の機能の一部、例えば、直交変復調機能、 AZD変換機能、 DZA変換機能など を充電器 900に備える構成としてもよい。この場合、携帯電話機 600と充電器 900と のインタフェースがディジタル信号となり、インタフェース仕様が簡単ィ匕できるという効 果が得られる。 Further, in the present embodiment, detection unit 608 of radio communication terminal apparatus 600 detects whether charger 900 attached to radio communication terminal apparatus 600 has power or not, and the charging The device 900 may detect whether or not the wireless communication terminal device 600 is charged with power. When the charger 900 has an antenna element and is charging power, the switching unit 609 uses only the antenna element 601 and the antenna element 602 of the wireless communication terminal device 600 for 2 × 2 MIMO transmission. The system is switched to the 4 × 4 MIMO transmission system using the antenna elements 601 and 602 and the antenna element 901 and the antenna element 902 included in the charger 900. As a result, the wireless communication terminal device 600 can communicate power in a charged state, so that it can perform high-speed communication for a long time without worrying about power consumption, and MIMO communication with high power consumption. Can be prevented from running out of the battery. [0134] In the present embodiment, charger 900 includes external antenna elements 901 and 902 and RF processing units 903 and 904, but the function of BB signal processing unit 605 of mobile phone 600 is described. For example, the charger 900 may be configured to include a part of the charger 900, such as an orthogonal modulation / demodulation function, an AZD conversion function, and a DZA conversion function. In this case, the interface between the mobile phone 600 and the charger 900 is a digital signal, and the effect that the interface specifications can be easily obtained is obtained.
[0135] また、通常の 2 X 2の MIMO伝送時は、携帯電話機 600にあら力じめ備えた 1本の アンテナ素子と、 1本の外付けアンテナ素子とを利用して通信してもよい。この場合、 MIMO伝送時のアンテナ素子間隔が大きくできるため、通信品質を改善できるという 効果が得られる。 [0135] In addition, during normal 2 X 2 MIMO transmission, communication may be performed using one antenna element that is preferentially installed in mobile phone 600 and one external antenna element. . In this case, the antenna element spacing during MIMO transmission can be increased, so that the communication quality can be improved.
[0136] 本明糸田書 ίま、 2005年 4月 14曰出願の特願 2005— 116871に基づくものである。 [0136] Based on Japanese Patent Application No. 2005-116871 filed on April 14, 2005.
この内容は全てここに含めておく。 All this content is included here.
産業上の利用可能性 Industrial applicability
[0137] 本発明は、外部機器がアンテナ素子を有すると検知した場合には、無線通信端末 装置のアンテナ素子およびこの無線通信端末装置に直接装着された外部機器のァ ンテナ素子を利用する伝送方式に切り替えることにより、高速通信を行うことができる と 、う効果を有し、外部機器を直接装着可能な無線通信端末装置として有用である
[0137] When the present invention detects that an external device has an antenna element, the transmission method uses the antenna element of the wireless communication terminal device and the antenna element of the external device directly attached to the wireless communication terminal device. By switching to, high-speed communication can be performed, which is useful as a wireless communication terminal device that has the effect of being able to directly attach external devices.
Claims
[1] 外部機器を直接装着可能な無線通信端末装置であって、 [1] A wireless communication terminal device that can be directly attached to an external device,
装着された前記外部機器がアンテナ素子を有する力否かを検知する検知手段と、 前記外部機器がアンテナ素子を有すると検知した場合、前記無線通信端末装置の アンテナ素子のみを用いる伝送方式から当該アンテナ素子および前記外部機器の アンテナ素子を用いる伝送方式に切り替える切替手段と、を具備する無線通信端末 装置。 Detecting means for detecting whether or not the mounted external device has an antenna element; and, when detecting that the external device has an antenna element, the antenna from the transmission method using only the antenna element of the wireless communication terminal device And a switching means for switching to a transmission method using an antenna element of the external device and the external device.
[2] 前記外部機器は、電池パックまたは充電器であり、 [2] The external device is a battery pack or a charger.
前記切替手段は、前記検知手段が、前記外部機器が前記無線通信端末装置に電 力を供給し、かつアンテナ素子を有すると検知した場合に、前記無線通信端末装置 のアンテナ素子のみを用いる伝送方式から当該アンテナ素子および前記電池パック のアンテナ素子を用いる伝送方式を切り替える請求項 1記載の無線通信端末装置。 The switching means uses the antenna element of the radio communication terminal apparatus when the detection means detects that the external device supplies power to the radio communication terminal apparatus and has an antenna element. 2. The wireless communication terminal apparatus according to claim 1, wherein the transmission method using the antenna element and the antenna element of the battery pack is switched.
[3] 前記伝送方式は、 MIMO伝送である請求項 1記載の無線通信端末装置。 3. The wireless communication terminal apparatus according to claim 1, wherein the transmission method is MIMO transmission.
[4] 請求項 1記載の無線通信端末装置に直接装着可能であって高周波回路を備えた 外部機器。 [4] An external device that can be directly attached to the wireless communication terminal device according to claim 1 and includes a high-frequency circuit.
[5] 外部機器を直接装着可能な無線通信端末装置における伝送方式切替方法であつ て、 [5] A transmission method switching method in a wireless communication terminal device to which an external device can be directly attached.
装着された前記外部機器がアンテナ素子を有する力否かを検知して、 前記外部機器がアンテナ素子を有すると検知した場合、前記無線通信端末装置の アンテナ素子のみを用いる伝送方式から当該アンテナ素子および前記外部機器の アンテナ素子を用いる伝送方式に切り替える伝送方式切替方法。
When the attached external device detects whether or not the external device has an antenna element, and detects that the external device has an antenna element, the antenna element and the antenna element from the transmission method using only the antenna element of the wireless communication terminal device A transmission method switching method for switching to a transmission method using an antenna element of the external device.
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JP2005116871A JP2008166855A (en) | 2005-04-14 | 2005-04-14 | Portable telephone unit |
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