JP4672696B2 - Software updating method and software updating apparatus for wireless terminal - Google Patents

Software updating method and software updating apparatus for wireless terminal Download PDF

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JP4672696B2
JP4672696B2 JP2007079344A JP2007079344A JP4672696B2 JP 4672696 B2 JP4672696 B2 JP 4672696B2 JP 2007079344 A JP2007079344 A JP 2007079344A JP 2007079344 A JP2007079344 A JP 2007079344A JP 4672696 B2 JP4672696 B2 JP 4672696B2
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wireless terminal
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processing unit
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software
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明洋 山岸
文晴 森澤
充 原田
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Nippon Telegraph and Telephone Corp
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本発明は、使用中の無線端末の内部ファームウェアなどのソフトウェアの更新に用いられる無線端末のソフトウェア更新方法およびソフトウェア更新装置に関する。   The present invention relates to a software updating method and a software updating apparatus for a wireless terminal used for updating software such as internal firmware of the wireless terminal in use.

図５は、従来の無線端末のソフトウェア更新方法の第１の形態を示す。ここでは、無線端末をサービスショップなどに持ち込み、保守用端末から無線端末のファームウェアを更新する例を示す。   FIG. 5 shows a first form of a conventional software update method for a wireless terminal. Here, an example is shown in which a wireless terminal is brought into a service shop and the firmware of the wireless terminal is updated from the maintenance terminal.

図において、無線端末５０は、アンテナ５１と、無線信号処理部５２と、ベースバンド信号処理部５３と、更新対象のファームウェア５４を含む制御部５５から構成される。無線端末５０には、インタフェースを介して制御部５５に接続される保守用ポート５６がある。ファームウェア５４の更新が必要になった場合には、無線端末５０の提供者がなんらかの方法でユーザに通知し、ユーザが無線端末５０をサービスショップなどに持ち込む。サービスショップでは、無線端末５０の保守用ポート５６に保守用端末６０を接続し、所定の操作により保守用端末６０からファームウェア５４の更新データをダウンロードし、ファームウェア５４の書き換えを行う。   In the figure, a wireless terminal 50 includes an antenna 51, a wireless signal processing unit 52, a baseband signal processing unit 53, and a control unit 55 including firmware 54 to be updated. The wireless terminal 50 has a maintenance port 56 connected to the control unit 55 via an interface. When the firmware 54 needs to be updated, the provider of the wireless terminal 50 notifies the user by some method, and the user brings the wireless terminal 50 to a service shop or the like. In the service shop, the maintenance terminal 60 is connected to the maintenance port 56 of the wireless terminal 50, the update data of the firmware 54 is downloaded from the maintenance terminal 60 by a predetermined operation, and the firmware 54 is rewritten.

図６は、従来の無線端末のソフトウェア更新方法の第２の形態を示す。ここでは、ネットワークから無線端末のファームウェアを更新する例を示す（非特許文献１）。   FIG. 6 shows a second form of a conventional software update method for a wireless terminal. Here, an example of updating the firmware of the wireless terminal from the network is shown (Non-Patent Document 1).

図において、無線端末５０は、アンテナ５１と、無線信号処理部５２と、ベースバンド信号処理部５３と、更新対象のファームウェア５４を含む制御部５５から構成される。無線端末５０のファームウェア５４の更新が必要になった場合には、無線端末５０の提供者が更新データを該当する無線端末５０宛に送信する。この更新データは、図外のネットワークから無線基地局６１に伝送され、無線基地局６１から搬送波に乗せてＲＦ（無線周波数）信号として送信される。無線端末５０は、通常の受信処理に用いる信号処理回路を介して更新データを受信し、ファームウェア５４の書き換えを行う。
無線通信を利用したソフトウェア更新システム「エアダウンロード」http://www.nttdocomo.co.jp/binary/pdf/info/news release/report/050216.pdf In the figure, a wireless terminal 50 includes an antenna 51, a wireless signal processing unit 52, a baseband signal processing unit 53, and a control unit 55 including firmware 54 to be updated. When the firmware 54 of the wireless terminal 50 needs to be updated, the provider of the wireless terminal 50 transmits update data to the corresponding wireless terminal 50. The update data is transmitted from the network (not shown) to the radio base station 61, and transmitted from the radio base station 61 on a carrier wave as an RF (radio frequency) signal. The wireless terminal 50 receives the update data through a signal processing circuit used for normal reception processing, and rewrites the firmware 54.
Software update system "Air Download" using wireless communication http://www.nttdocomo.co.jp/binary/pdf/info/news release / report / 050216.pdf

無線端末のソフトウェアを更新する従来の第１の形態では、無線端末５０に専用の保守用端末６０と接続する保守用ポート５６を備える必要がある。そのため、無線端末５０にその実装スペースを確保する必要があり、小型化の制約になっていた。また、この保守用ポート５６を利用してユーザが勝手にソフトウェアの書き換えができないようにする必要があり、そのために余計な仕組みが必要になっていた。   In the first conventional form of updating the software of the wireless terminal, it is necessary to provide the wireless terminal 50 with a maintenance port 56 connected to the dedicated maintenance terminal 60. Therefore, it is necessary to secure the mounting space in the wireless terminal 50, which is a limitation on downsizing. In addition, it is necessary to prevent the user from rewriting the software without permission by using the maintenance port 56, and therefore an extra mechanism is required.

無線端末のソフトウェアを更新する従来の第２の形態では、ソフトウェアの更新のために運用中の伝送帯域を占有することになり、更新データが大きくなるほど伝送帯域を圧迫する問題があった。   In the second conventional form of updating the software of the wireless terminal, there is a problem of occupying the transmission band in operation for updating the software, and as the update data increases, the transmission band is compressed.

また、従来の第１の形態と第２の形態を合わせたものとして、無線端末の近くで専用の保守用端末から無線信号として更新データを送信し、無線端末の通常の受信系で受信してソフトウェアを更新する形態も考えられるが、サービス中の無線周波数を利用すると近くの他の無線端末に影響を与える可能性がある。また、第１の形態と同様に、公開されている無線周波数を使用すると、ユーザによる勝手な書き換えを阻止するための仕組みが必要になる。また、第２の形態と同様に、高周波ＲＦ回路を動作させる必要があり、消費電力が大きくなる問題がある。   Also, as a combination of the first and second forms of the prior art, update data is transmitted as a radio signal from a dedicated maintenance terminal near the radio terminal, and received by the normal reception system of the radio terminal Although the form which updates software is also considered, if the radio frequency in service is used, it may affect other nearby radio terminals. Similarly to the first embodiment, when a public radio frequency is used, a mechanism for preventing arbitrary rewriting by the user is required. Further, similarly to the second embodiment, it is necessary to operate a high-frequency RF circuit, which causes a problem of increasing power consumption.

本発明は、無線端末に大きな変更を強いることなく小さな消費電力でソフトウェアの更新を行うことができる無線端末のソフトウェア更新方法およびソフトウェア更新装置を提供することを目的とする。   An object of the present invention is to provide a software updating method and a software updating apparatus for a wireless terminal that can perform software updating with small power consumption without forcing the wireless terminal to make a large change.

第１の発明は、アンテナ、ＲＦ信号処理部、ＩＦ信号処理部、ベースバンド信号処理部、制御部を備えた無線端末に搭載されているソフトウェアを更新する無線端末のソフトウェア更新方法において、保守用端末から更新データで変調したＩＦ信号を送信し、アンテナに受信したＩＦ信号がＲＦ信号処理部の回路からリークまたはＲＦ信号処理部をバイパスしてＩＦ信号処理部に入力し、このＩＦ信号をベースバンド信号に変換して更新データを復調し、この更新データを用いてソフトウェアの更新を行う。 A first aspect of the present invention is a software update method for a wireless terminal for updating software installed in a wireless terminal including an antenna, an RF signal processing unit, an IF signal processing unit, a baseband signal processing unit, and a control unit. An IF signal modulated with update data is transmitted from the terminal, and the IF signal received by the antenna leaks from the RF signal processing circuit or bypasses the RF signal processing unit and is input to the IF signal processing unit. The data is converted into a band signal, the update data is demodulated, and the software is updated using the update data.

ここで、ＩＦ信号を受信するときに、ＲＦ信号処理部の電源をオフに制御するようにしてもよい。   Here, when the IF signal is received, the power of the RF signal processing unit may be controlled to be turned off.

第２の発明は、アンテナ、ＲＦ信号処理部、ＩＦ信号処理部、ベースバンド信号処理部、制御部を備えた無線端末に搭載されているソフトウェアを更新する無線端末のソフトウェア更新装置において、ソフトウェアの更新データで変調したＩＦ（中間周波数）信号を送信する保守用端末を備え、無線端末は、アンテナに受信したＩＦ信号がＲＦ信号処理部の回路からリークまたはＲＦ信号処理部をバイパスしてＩＦ信号処理部に入力し、このＩＦ信号をベースバンド信号に変換して更新データを復調し、この更新データを用いてソフトウェアの更新を行う構成である。
According to a second aspect of the present invention, there is provided a software updating apparatus for a wireless terminal that updates software installed in a wireless terminal including an antenna, an RF signal processing unit, an IF signal processing unit, a baseband signal processing unit, and a control unit. The wireless terminal includes a maintenance terminal that transmits an IF (intermediate frequency) signal modulated with update data, and the wireless terminal leaks the IF signal received by the antenna from the circuit of the RF signal processing unit or bypasses the RF signal processing unit to generate an IF signal. The IF signal is input to the processing unit, the IF signal is converted into a baseband signal, the update data is demodulated, and the software is updated using the update data.

保守用端末は、無線端末のアンテナに受信するＲＦ信号をシールドできる構造のＩＦ信号放射部を備え、更新データで変調したＩＦ信号を送信するときに当該ＩＦ信号放射部を無線端末のアンテナの近傍に配置するようにしてもよい。   The maintenance terminal includes an IF signal radiating unit having a structure capable of shielding an RF signal received by the antenna of the wireless terminal, and the IF signal radiating unit is located in the vicinity of the antenna of the wireless terminal when transmitting an IF signal modulated with update data. You may make it arrange | position to.

制御部は、更新データで変調したＩＦ信号を受信するときに、ＲＦ信号処理部の電源をオフに制御する構成としてもよい。また、無線端末は、ＲＦ信号処理部をバイパスしてアンテナとＩＦ信号処理部を接続するバイパス手段およびその接続をオン／オフするスイッチを備え、制御部は、ＲＦ信号を受信するときはスイッチをオフに制御し、更新データで変調したＩＦ信号を受信するときにスイッチをオンに制御する構成としてもよい。   The control unit may be configured to control the power of the RF signal processing unit to be off when receiving the IF signal modulated with the update data. The wireless terminal includes a bypass unit that bypasses the RF signal processing unit and connects the antenna and the IF signal processing unit, and a switch that turns on / off the connection. The control unit switches the switch when receiving the RF signal. The switch may be controlled to be turned on when receiving an IF signal that is controlled to be turned off and modulated with update data.

本発明のソフトウェア更新方法および装置を用いた無線端末は、更新データをＩＦ信号により受信するので、更新データをダウンロードするための有線ポートが不要である。   Since the wireless terminal using the software updating method and apparatus of the present invention receives the update data through the IF signal, a wired port for downloading the update data is not necessary.

また、外部に公開されない中間周波数のＩＦ信号を用いるため、サービスに用いているＲＦ信号を利用する場合に比べてユーザによる勝手な書き換えを阻止することが容易である。また、中間周波数は、サービスに用いられる無線周波数と異なるため、他の無線端末に与える影響は小さい。また、更新データで変調したＩＦ信号を受信する際にＲＦ信号をシールドすることにより、ソフトウエア更新期間中に基地局からの電波を遮断することができ、更新情報を安定に入力することができる。   In addition, since an intermediate frequency IF signal that is not disclosed to the outside is used, it is easier to prevent arbitrary rewriting by the user as compared with the case of using the RF signal used for the service. Further, since the intermediate frequency is different from the radio frequency used for the service, the influence on other radio terminals is small. Also, by shielding the RF signal when receiving an IF signal modulated with update data, radio waves from the base station can be blocked during the software update period, and update information can be input stably. .

また、通常の運用中に比べて大量の更新データを、比較的消費電力が大きいＲＦ信号処理部を使用せずにダウンロードすることができ、ソフトウェアの更新に伴う消費電力を低減することができる。   In addition, a large amount of update data can be downloaded without using an RF signal processing unit that consumes a relatively large amount of power compared to that during normal operation, and power consumption associated with software updates can be reduced.

図１は、本発明の無線端末のソフトウェア更新装置の実施形態を示す。
図において、無線端末１０は、アンテナ１１と、ＲＦ信号処理部１２と、ＩＦ信号処理部１３と、ベースバンド信号処理部１４と、更新対象のファームウェア１５を含む制御部１６から構成される。基本的な構成は図６に示す従来構成と同様であるが、図６に示す従来構成では本実施形態のＲＦ信号処理部１２とＩＦ信号処理部１３を合わせて無線信号処理部５２としている。 FIG. 1 shows an embodiment of a software updating apparatus for a wireless terminal according to the present invention.
In the figure, the wireless terminal 10 includes an antenna 11, an RF signal processing unit 12, an IF signal processing unit 13, a baseband signal processing unit 14, and a control unit 16 including firmware 15 to be updated. The basic configuration is the same as the conventional configuration shown in FIG. 6, but in the conventional configuration shown in FIG. 6, the RF signal processing unit 12 and the IF signal processing unit 13 of this embodiment are combined to form a radio signal processing unit 52.

本発明の特徴とするところは、保守用端末２０と無線端末１０を無線接続し、保守用端末２０から無線端末１０にソフトウェアの更新データをダウンロードする媒体としてＩＦ（中間周波数）信号を用いるところにある。保守用端末２０は、更新データで変調したＩＦ信号を送信する機能を有し、ＩＦ信号放射部２１は、無線端末１０のアンテナ１１に受信するＲＦ信号をシールドできる構造とする。図１では、無線端末１０のアンテナ１１を包み込むような形状のＩＦ信号放射部２１を表示しているが、そのような形状に限定されるものではない。ＩＦ信号放射部２１から放射されたＩＦ信号は、アンテナ１１からＲＦ信号処理部１２を通過してＩＦ信号処理部１３に入力され、ＩＦ信号からベースバンド信号に変換されてベースバンド信号処理部１４に入力される。ベースバンド信号処理部１４では、通常の信号処理によりＩＦ信号を用いて伝送された更新データを復調し、制御部１６を介してファームウェア１５を更新する。   A feature of the present invention is that the maintenance terminal 20 and the wireless terminal 10 are wirelessly connected, and an IF (intermediate frequency) signal is used as a medium for downloading software update data from the maintenance terminal 20 to the wireless terminal 10. is there. The maintenance terminal 20 has a function of transmitting an IF signal modulated with update data, and the IF signal radiating unit 21 has a structure capable of shielding an RF signal received by the antenna 11 of the wireless terminal 10. In FIG. 1, the IF signal radiating unit 21 shaped to wrap around the antenna 11 of the wireless terminal 10 is displayed, but the shape is not limited to such a shape. The IF signal radiated from the IF signal radiating unit 21 is input from the antenna 11 to the IF signal processing unit 13 through the RF signal processing unit 12, converted from the IF signal to the baseband signal, and then the baseband signal processing unit 14. Is input. The baseband signal processing unit 14 demodulates update data transmitted using the IF signal by normal signal processing, and updates the firmware 15 via the control unit 16.

図２は、無線端末の通常運用時の受信回路系を示す。
図において、アンテナ１１に受信するＲＦ信号（搬送波周波数ｆRF）は、増幅器１２１、ミキサ１２２、発振器（発振周波数ｆLO1 ）１２３からなるＲＦ信号処理部１２でＩＦ信号（周波数ｆIF＝ｆRF−ｆLO1 ）に変換され、さらに増幅器１３１、ミキサ１３２、発振器（発振周波数ｆLO2 ＝ｆIF）１３３からなるＩＦ信号処理部１３でベースバンド信号に変換され、ベースバンド信号処理部１４に入力される。 FIG. 2 shows a receiving circuit system during normal operation of the wireless terminal.
In the figure, an RF signal (carrier frequency f RF ) received by the antenna 11 is converted into an IF signal (frequency f IF = f RF −) by an RF signal processing unit 12 including an amplifier 121, a mixer 122, and an oscillator (oscillation frequency f LO1 ) 123. f LO1 ), and further converted into a baseband signal by an IF signal processing unit 13 including an amplifier 131, a mixer 132, and an oscillator (oscillation frequency f LO2 = f IF ) 133, and input to the baseband signal processing unit 14. .

図３は、本発明の無線端末のソフトウェア更新装置における第１の受信回路系を示す。
図において、アンテナ１１に受信する更新データで変調されたＩＦ信号（周波数ｆIF）は、ＲＦ信号処理部１２の回路内の寄生容量や基板、電源ラインなどを介し、減衰しつつもＩＦ信号処理部１３の増幅器１３１の入力に達する。このＩＦ信号は、ミキサ１３２で発振器１３３の出力信号（周波数ｆLO2 ＝ｆIF）とミキシングしてベースバンド信号に変換され、ベースバンド信号処理部１４に入力される。 FIG. 3 shows a first receiving circuit system in the software updating apparatus of the wireless terminal of the present invention.
In the figure, the IF signal (frequency f IF ) modulated by the update data received by the antenna 11 is attenuated through the parasitic capacitance in the circuit of the RF signal processing unit 12, the substrate, the power supply line, etc., and the IF signal processing is performed. The input of the amplifier 131 of the unit 13 is reached. This IF signal is mixed with the output signal (frequency f LO2 = f IF ) of the oscillator 133 by the mixer 132 to be converted into a baseband signal and input to the baseband signal processing unit 14.

ここで、無線端末１０の制御部１６は、ソフトウェアの更新を行うコマンドを認識した場合に、ＲＦ信号処理部１２の電源をオフ、ＩＦ信号処理部１３以降の各部の電源をオンにする制御を行うことにより、更新データで変調されたＩＦ信号を受信してソフトウェア更新を行うときの消費電力を低減することができる。   Here, the control unit 16 of the wireless terminal 10 performs control to turn off the power of the RF signal processing unit 12 and turn on the power of each unit after the IF signal processing unit 13 when recognizing a command for updating software. By doing so, it is possible to reduce power consumption when receiving an IF signal modulated with update data and performing software update.

図４は、本発明の無線端末のソフトウェア更新装置における第２の受信回路系を示す。
図において、アンテナ１１に受信する更新データで変調されたＩＦ信号（周波数ｆIF）は、増幅器１２１、ミキサ１２２、発振器（発振周波数ｆLO1 ）１２３からなるＲＦ信号処理部１２をバイパスするバイパス経路１７を介して、ＩＦ信号処理部１３の増幅器１３１に入力する。このＩＦ信号は、ミキサ１３２で発振器１３３の出力信号（周波数ｆLO2 ＝ｆIF）とミキシングしてベースバンド信号に変換され、ベースバンド信号処理部１４に入力される。 FIG. 4 shows a second receiving circuit system in the software updating apparatus of the wireless terminal of the present invention.
In the figure, an IF signal (frequency f IF ) modulated by update data received by the antenna 11 is bypassed by an RF signal processing unit 12 comprising an amplifier 121, a mixer 122, and an oscillator (oscillation frequency f LO1 ) 123. To the amplifier 131 of the IF signal processing unit 13. This IF signal is mixed with the output signal (frequency f LO2 = f IF ) of the oscillator 133 by the mixer 132 to be converted into a baseband signal and input to the baseband signal processing unit 14.

ここで、バイパス経路１７には、通常のＲＦ信号受信時にはオフとなり、ソフトウェアの更新のために更新データで変調されたＩＦ信号を受信するときにオンとなるスイッチ１８を設ける。無線端末１０の制御部１６は、ソフトウェアの更新を行うコマンドを認識した場合に、ＲＦ信号処理部１２の電源をオフ、ＩＦ信号処理部１３以降の各回路の電源をオンにするとともに、スイッチ１８をオンにする制御を行うことにより、更新データで変調されたＩＦ信号の伝送を容易にし、かつソフトウェア更新を行うときの消費電力を低減することができる。   Here, the bypass path 17 is provided with a switch 18 that is turned off when receiving a normal RF signal and turned on when receiving an IF signal modulated with update data for software update. When the control unit 16 of the wireless terminal 10 recognizes a command to update software, the control unit 16 turns off the power of the RF signal processing unit 12, turns on the power of each circuit after the IF signal processing unit 13, and switches 18 By performing the control to turn on, it is possible to facilitate the transmission of the IF signal modulated with the update data and to reduce the power consumption when performing the software update.

本発明の無線端末のソフトウェア更新装置の実施形態を示す図。The figure which shows embodiment of the software update apparatus of the radio | wireless terminal of this invention. 無線端末の通常運用時の受信回路系を示す図。The figure which shows the receiving circuit system at the time of normal operation of a radio | wireless terminal. 本発明の無線端末のソフトウェア更新装置における第１の受信回路系を示す図。The figure which shows the 1st receiving circuit system in the software update apparatus of the radio | wireless terminal of this invention. 本発明の無線端末のソフトウェア更新装置における第２の受信回路系を示す図。The figure which shows the 2nd receiving circuit system in the software update apparatus of the radio | wireless terminal of this invention. 従来の無線端末のソフトウェア更新方法の第１の形態を示す図。The figure which shows the 1st form of the software update method of the conventional radio | wireless terminal. 従来の無線端末のソフトウェア更新方法の第２の形態を示す図。The figure which shows the 2nd form of the software update method of the conventional radio | wireless terminal.

符号の説明Explanation of symbols

１０ 無線端末
１１ アンテナ
１２ ＲＦ信号処理部
１３ ＩＦ信号処理部
１４ ベースバンド信号処理部
１５ ファームウェア
１６ 制御部
２０ 保守用端末
２１ ＩＦ信号放射部
５０ 無線端末
５１ アンテナ
５２ 無線信号処理部
５３ ベースバンド信号処理部
５４ ファームウェア
５５ 制御部
５６ 保守用ポート
６０ 保守用端末
６１ 無線基地局 DESCRIPTION OF SYMBOLS 10 Wireless terminal 11 Antenna 12 RF signal processing part 13 IF signal processing part 14 Baseband signal processing part 15 Firmware 16 Control part 20 Maintenance terminal 21 IF signal radiation | emission part 50 Wireless terminal 51 Antenna 52 Wireless signal processing part 53 Baseband signal processing Unit 54 firmware 55 control unit 56 maintenance port 60 maintenance terminal 61 radio base station

Claims (6)

アンテナ、ＲＦ（無線周波数）信号処理部、ＩＦ（中間周波数）信号処理部、ベースバンド信号処理部、制御部を備えた無線端末に搭載されているソフトウェアを更新する無線端末のソフトウェア更新方法において、
保守用端末から更新データで変調したＩＦ（中間周波数）信号を送信し、
前記アンテナに受信した前記ＩＦ信号が前記ＲＦ信号処理部の回路からリークまたは前記ＲＦ信号処理部をバイパスして前記ＩＦ信号処理部に入力し、このＩＦ信号をベースバンド信号に変換して前記更新データを復調し、この更新データを用いて前記ソフトウェアの更新を行う
ことを特徴とする無線端末のソフトウェア更新方法。 In a software update method for a wireless terminal that updates software installed in a wireless terminal including an antenna, an RF (radio frequency) signal processing unit, an IF (intermediate frequency) signal processing unit, a baseband signal processing unit, and a control unit,
Send IF (intermediate frequency) signal modulated with update data from the maintenance terminal,
The IF signal received by the antenna leaks from the circuit of the RF signal processing unit or bypasses the RF signal processing unit and is input to the IF signal processing unit. The IF signal is converted into a baseband signal and updated. A radio terminal software update method, comprising: demodulating data and updating the software using the update data. 請求項１に記載の無線端末のソフトウェア更新方法において、
前記ＩＦ信号を受信するときに、前記ＲＦ信号処理部の電源をオフに制御する
ことを特徴とする無線端末のソフトウェア更新方法。 In the wireless terminal software update method according to claim 1,
A software update method for a wireless terminal, wherein when the IF signal is received, the RF signal processing unit is turned off. アンテナ、ＲＦ（無線周波数）信号処理部、ＩＦ（中間周波数）信号処理部、ベースバンド信号処理部、制御部を備えた無線端末に搭載されているソフトウェアを更新する無線端末のソフトウェア更新装置において、
前記ソフトウェアの更新データで変調したＩＦ（中間周波数）信号を送信する保守用端末を備え、
前記無線端末は、前記アンテナに受信した前記ＩＦ信号が前記ＲＦ信号処理部の回路からリークまたは前記ＲＦ信号処理部をバイパスして前記ＩＦ信号処理部に入力し、このＩＦ信号をベースバンド信号に変換して前記更新データを復調し、この更新データを用いて前記ソフトウェアの更新を行う構成である
ことを特徴とする無線端末のソフトウェア更新装置。 In a software updating apparatus for a wireless terminal that updates software installed in a wireless terminal including an antenna, an RF (radio frequency) signal processing unit, an IF (intermediate frequency) signal processing unit, a baseband signal processing unit, and a control unit,
A maintenance terminal for transmitting an IF (intermediate frequency) signal modulated by the software update data;
The wireless terminal leaks the IF signal received by the antenna from the circuit of the RF signal processing unit or bypasses the RF signal processing unit and inputs the IF signal to the IF signal processing unit, and converts the IF signal into a baseband signal. A software update device for a wireless terminal, wherein the update data is demodulated and demodulated, and the software is updated using the update data. 請求項３に記載の無線端末のソフトウェア更新装置において、
前記保守用端末は、前記無線端末のアンテナに受信するＲＦ信号をシールドできる構造のＩＦ信号放射部を備え、前記更新データで変調したＩＦ信号を送信するときに当該ＩＦ信号放射部を前記無線端末のアンテナの近傍に配置する
ことを特徴とする無線端末のソフトウェア更新装置。 The software update device for a wireless terminal according to claim 3,
The maintenance terminal includes an IF signal radiating unit configured to shield an RF signal received by the antenna of the wireless terminal, and the IF signal radiating unit is transmitted to the wireless terminal when transmitting an IF signal modulated with the update data. A software updating device for a wireless terminal, characterized in that the software updating device is arranged in the vicinity of the antenna. 請求項３に記載の無線端末のソフトウェア更新装置において、
前記制御部は、前記更新データで変調したＩＦ信号を受信するときに、前記ＲＦ信号処理部の電源をオフに制御する構成である
ことを特徴とする無線端末のソフトウェア更新装置。 The software update device for a wireless terminal according to claim 3,
The software update device for a wireless terminal, wherein the control unit is configured to control the power of the RF signal processing unit to be turned off when receiving an IF signal modulated with the update data. 請求項３に記載の無線端末のソフトウェア更新装置において、
前記無線端末は、前記ＲＦ信号処理部をバイパスして前記アンテナと前記ＩＦ信号処理部を接続するバイパス手段およびその接続をオン／オフするスイッチを備え、
前記制御部は、前記ＲＦ信号を受信するときは前記スイッチをオフに制御し、前記更新データで変調したＩＦ信号を受信するときに前記スイッチをオンに制御する構成である
ことを特徴とする無線端末のソフトウェア更新装置。 The software update device for a wireless terminal according to claim 3,
The wireless terminal includes bypass means for bypassing the RF signal processing unit to connect the antenna and the IF signal processing unit, and a switch for turning on / off the connection,
The control unit is configured to control the switch to be turned off when receiving the RF signal, and to control the switch to be turned on when receiving an IF signal modulated with the update data. Terminal software update device.
JP2007079344A 2007-03-26 2007-03-26 Software updating method and software updating apparatus for wireless terminal Expired - Fee Related JP4672696B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0275228A (en) * 1988-09-09 1990-03-14 Japan Radio Co Ltd Self-diagnostic device for receiver
JP2000013336A (en) * 1998-06-19 2000-01-14 Japan Radio Co Ltd Receiver with self diagnostic function
JP2000324043A (en) * 1999-05-13 2000-11-24 Hitachi Ltd Downloading method and software radio system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0275228A (en) * 1988-09-09 1990-03-14 Japan Radio Co Ltd Self-diagnostic device for receiver
JP2000013336A (en) * 1998-06-19 2000-01-14 Japan Radio Co Ltd Receiver with self diagnostic function
JP2000324043A (en) * 1999-05-13 2000-11-24 Hitachi Ltd Downloading method and software radio system

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