JP2009232103A - Radio apparatus - Google Patents

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JP2009232103A
JP2009232103A JP2008074271A JP2008074271A JP2009232103A JP 2009232103 A JP2009232103 A JP 2009232103A JP 2008074271 A JP2008074271 A JP 2008074271A JP 2008074271 A JP2008074271 A JP 2008074271A JP 2009232103 A JP2009232103 A JP 2009232103A
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circuit
communication control
control circuit
signal
received signal
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JP4673902B2 (en
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Shigeki Saito
茂樹 斉藤
Tetsuo Nakamura
哲男 中村
Yasushi Morita
靖 森田
Tetsuya Maruyama
哲也 丸山
Kenji Suzuki
賢司 鈴木
Koji Fujii
孝治 藤井
Akihiro Yamagishi
明洋 山岸
Mitsuru Harada
充 原田
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NTT Electronics Corp
NTT Inc
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NTT Electronics Corp
Nippon Telegraph and Telephone Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

【課題】消費電力を低減することができる無線装置を得る。
【解決手段】無線装置は、受信信号を受信する受信回路１０と、受信信号を処理する通信制御回路１２とを備える。受信回路１０は、復調回路１４、検出回路１６及びデータ保存回路１８を有する。復調回路１４は、受信信号を復調データに復調する。検出回路１６は、復調データを解析して、受信信号に自分宛て信号が有るか無いかを検出する。データ保存回路１８は、復調データを保存する。
【選択図】図１A wireless device capable of reducing power consumption is obtained.
A wireless device includes a receiving circuit that receives a received signal and a communication control circuit that processes the received signal. The reception circuit 10 includes a demodulation circuit 14, a detection circuit 16, and a data storage circuit 18. The demodulation circuit 14 demodulates the received signal into demodulated data. The detection circuit 16 analyzes the demodulated data and detects whether there is a signal addressed to the received signal. The data storage circuit 18 stores demodulated data.
[Selection] Figure 1

Description

本発明は、受信信号を受信する受信回路と、受信信号を処理する通信制御回路とを備えた無線装置に関し、特に消費電力を低減することができる無線装置に関するものである。   The present invention relates to a radio apparatus including a reception circuit that receives a reception signal and a communication control circuit that processes the reception signal, and particularly relates to a radio apparatus that can reduce power consumption.

受信信号を受信する受信回路と、受信信号を処理する通信制御回路とを備えた無線装置が用いられている。このような無線装置において、受信信号に自分宛て信号が無い場合に、主制御部（受信回路）の電源をオフにして消費電力を低減する技術が提案されている（例えば、特許文献１参照）。   A wireless device including a reception circuit that receives a reception signal and a communication control circuit that processes the reception signal is used. In such a wireless device, there is proposed a technique for reducing power consumption by turning off the main control unit (reception circuit) when there is no signal addressed to the received signal (see, for example, Patent Document 1). .

特開平７−２６４１１８号公報JP 7-264118 A

図９は、無線装置の参考例を示す図である。この無線装置は、受信信号を受信する受信回路１０と、受信信号を処理する通信制御回路１２とを備える。なお、通信制御回路１２はソフトウェアを実行するマイコンにより構成され、受信回路１０はマイコンとは別のハードウェアにより構成される。   FIG. 9 is a diagram illustrating a reference example of a wireless device. The wireless device includes a reception circuit 10 that receives a reception signal and a communication control circuit 12 that processes the reception signal. The communication control circuit 12 is configured by a microcomputer that executes software, and the receiving circuit 10 is configured by hardware different from the microcomputer.

受信回路１０は、受信信号を復調データに復調する復調回路１４を有する。なお、受信信号は、受信側で同期を取るためのプリアンブル信号ＰＲ、受信側で通信路を確立するためのヘッダＡ，Ｂ、及びメインデータで構成される。特に、間欠受信時の受信信号のヘッダは、メインデータに自分宛て信号が有るか無いかの情報を含んでいる。   The receiving circuit 10 includes a demodulating circuit 14 that demodulates the received signal into demodulated data. The received signal includes a preamble signal PR for synchronization on the receiving side, headers A and B for establishing a communication path on the receiving side, and main data. In particular, the header of the reception signal at the time of intermittent reception includes information on whether or not there is a signal addressed to the main data.

上記の無線装置の動作について、図１０のフローチャートを参照しながら説明する。
まず、復調回路１４は、受信信号を復調データに復調する（ステップＳ１０１）。
次に、復調回路１４は、復調データを通信制御回路１２へ転送する（ステップＳ１０２）。そして、通信制御回路１２は、ヘッダＡ，Ｂを処理する（ステップＳ１０３，Ｓ１０４）。 The operation of the above wireless device will be described with reference to the flowchart of FIG.
First, the demodulation circuit 14 demodulates the received signal into demodulated data (step S101).
Next, the demodulation circuit 14 transfers the demodulated data to the communication control circuit 12 (step S102). Then, the communication control circuit 12 processes the headers A and B (steps S103 and S104).

次に、通信制御回路１２は、ヘッダＡ，Ｂの復調データを解析して、受信信号に自分宛て信号が有るか無いかを検出する。そして、自分宛て信号が有る場合、通信制御回路１２は、メインデータを処理する（ステップＳ１０５）。一方、自分宛て信号が無い場合、受信回路１０の電源をＯＦＦし、通信制御回路１２は、自分自身にストップ命令を出しスタンバイ状態とし、一定期間待機状態に入る（ステップＳ１０６）。待機時間は、タイマー回路によって計られ、タイムアップすると通信制御回路１２に割り込み信号が供給され、通信制御回路がスタンバイ状態から起動する。   Next, the communication control circuit 12 analyzes the demodulated data of the headers A and B, and detects whether there is a signal addressed to itself in the received signal. If there is a signal addressed to itself, the communication control circuit 12 processes the main data (step S105). On the other hand, when there is no signal addressed to itself, the power supply of the receiving circuit 10 is turned off, the communication control circuit 12 issues a stop command to itself, enters a standby state, and enters a standby state for a certain period (step S106). The standby time is measured by a timer circuit. When the time is up, an interrupt signal is supplied to the communication control circuit 12, and the communication control circuit is activated from the standby state.

図１１は、図９の無線装置の受信回路と通信制御回路の動作を説明するための図である。送受信期間では、受信回路１０と通信制御回路１２の両方が動作し、メインデータの受信処理や送信を行う。一方、間欠受信期間では、受信回路１０と通信制御回路１２の両方が動作し、受信信号に自分宛て信号が有るか無いかを検出する。自分宛て信号が有る場合は、送受信期間に移行して送受信処理を行う。自分宛て信号が無い場合は、一定時間後に再び自分宛て信号が有るか無いかを検出する。   FIG. 11 is a diagram for explaining operations of the reception circuit and the communication control circuit of the wireless device of FIG. In the transmission / reception period, both the reception circuit 10 and the communication control circuit 12 operate to perform main data reception processing and transmission. On the other hand, in the intermittent reception period, both the reception circuit 10 and the communication control circuit 12 operate to detect whether the received signal has a signal addressed to itself. If there is a signal addressed to the user, the transmission / reception process is performed during the transmission / reception period. When there is no signal addressed to itself, it is detected again whether there is a signal addressed to itself after a certain period of time.

自分宛て信号の有無を検出する処理は複雑であるため、マイコンである通信制御回路１２がソフトウェアを実行することで当該処理が行われる。そして、一般に、間欠受信期間中において、受信信号に自分宛て信号が存在しない場合の方が多い。しかし、受信動作のたびに通信制御回路１２を起動させていたため、消費電力が大きかった。   Since the process of detecting the presence / absence of a signal addressed to itself is complicated, the process is performed when the communication control circuit 12 which is a microcomputer executes software. In general, there are more cases where there is no signal addressed to the received signal during the intermittent reception period. However, since the communication control circuit 12 is activated every time a reception operation is performed, power consumption is large.

また、特許文献１の無線装置は、受信信号に自分宛て信号が無い場合に、主制御部（受信回路）の電源をオフにするが、主通信制御回路（通信制御回路）は動作を続ける。マイコンである通信制御回路は受信回路に比べて消費電流が大きいため、特許文献１の無線装置ではあまり消費電力を低減できなかった。   The wireless device disclosed in Patent Literature 1 turns off the main control unit (reception circuit) when there is no signal addressed to itself, but the main communication control circuit (communication control circuit) continues to operate. Since the communication control circuit, which is a microcomputer, consumes a larger amount of current than the receiving circuit, the wireless device of Patent Document 1 cannot reduce power consumption much.

本発明は、上述のような課題を解決するためになされたもので、その目的は消費電力を低減することができる無線装置を得るものである。   The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a wireless device capable of reducing power consumption.

本発明に係る無線装置は、受信信号を受信する受信回路と、受信信号を処理する通信制御回路とを備え、受信回路は、受信信号を復調データに復調する復調回路と、復調データを解析して、受信信号に自分宛て信号が有るか無いかを検出する検出回路と、復調データを保存するデータ保存回路とを有し、自分宛て信号が有る場合、検出回路は、通信制御回路を起動させ、保存回路に保存された復調データを通信制御回路へ転送させ、自分宛て信号が無い場合、検出回路は、通信制御回路を起動させない。本発明のその他の特徴は以下に明らかにする。   A radio apparatus according to the present invention includes a receiving circuit that receives a received signal, and a communication control circuit that processes the received signal. The receiving circuit analyzes a demodulated data by demodulating the received signal into demodulated data. And a detection circuit for detecting whether the received signal has a signal addressed to itself and a data storage circuit for storing demodulated data, and when the signal addressed to itself exists, the detection circuit activates the communication control circuit. When the demodulated data stored in the storage circuit is transferred to the communication control circuit and there is no signal addressed to itself, the detection circuit does not activate the communication control circuit. Other features of the present invention will become apparent below.

本発明により、消費電力を低減することができる。   According to the present invention, power consumption can be reduced.

実施の形態１．
図１は、実施の形態１に係る無線装置を示す図である。この無線装置は、受信信号を受信する受信回路１０と、受信信号を処理する通信制御回路１２とを備える。なお、通信制御回路１２はソフトウェアを実行するマイコンにより構成され、受信回路１０はマイコンとは別のハードウェアにより構成される。 Embodiment 1 FIG.
1 is a diagram illustrating a radio apparatus according to Embodiment 1. FIG. The wireless device includes a reception circuit 10 that receives a reception signal and a communication control circuit 12 that processes the reception signal. The communication control circuit 12 is configured by a microcomputer that executes software, and the receiving circuit 10 is configured by hardware different from the microcomputer.

受信回路１０は、復調回路１４、検出回路１６及びデータ保存回路１８を有する。復調回路１４は、受信信号を復調データに復調する。検出回路１６は、復調データを解析して、受信信号に自分宛て信号が有るか無いかを検出する。データ保存回路１８は、復調データを保存する。   The reception circuit 10 includes a demodulation circuit 14, a detection circuit 16, and a data storage circuit 18. The demodulation circuit 14 demodulates the received signal into demodulated data. The detection circuit 16 analyzes the demodulated data and detects whether there is a signal addressed to the received signal. The data storage circuit 18 stores demodulated data.

図２は、実施の形態１に係る受信信号を示す概念図である。受信信号は、受信側で同期を取るためのプリアンブル信号ＰＲ、受信側で通信路を確立するためのヘッダＡ，Ｂ、及びメインデータで構成される。特に、間欠受信時の受信信号のヘッダには、メインデータに自分宛て信号が有るか無いかの情報が含まれている。   FIG. 2 is a conceptual diagram showing a received signal according to the first embodiment. The reception signal includes a preamble signal PR for synchronization on the reception side, headers A and B for establishing a communication path on the reception side, and main data. In particular, the header of the reception signal at the time of intermittent reception includes information on whether or not there is a signal addressed to the main data.

上記の無線装置の動作について、図３のフローチャートを参照しながら説明する。
まず、復調回路１４は、受信信号を復調データに復調する（ステップＳ１）。
次に、検出回路１６は、ヘッダＡ，Ｂの復調データを解析して、受信信号に自分宛て信号が有るか無いかを検出する（ステップＳ２）。データ保存回路１８は、検出回路１６が復調データを解析している間、復調データを保存する（ステップＳ３）。 The operation of the wireless device will be described with reference to the flowchart of FIG.
First, the demodulation circuit 14 demodulates the received signal into demodulated data (step S1).
Next, the detection circuit 16 analyzes the demodulated data of the headers A and B, and detects whether there is a signal addressed to the received signal (step S2). The data storage circuit 18 stores the demodulated data while the detection circuit 16 analyzes the demodulated data (step S3).

自分宛て信号が有る場合、検出回路１６は、通信制御回路１２をスタンバイ状態から起動させ（ステップＳ４）、データ保存回路１８に保存された復調データを通信制御回路１２へ転送させる（ステップＳ５）。そして、通信制御回路１２は、ヘッダＡ，Ｂ及びメインデータを処理する（ステップＳ６〜Ｓ８）。   When there is a signal addressed to itself, the detection circuit 16 activates the communication control circuit 12 from the standby state (step S4), and transfers the demodulated data stored in the data storage circuit 18 to the communication control circuit 12 (step S5). Then, the communication control circuit 12 processes the headers A and B and the main data (Steps S6 to S8).

一方、自分宛て信号が無い場合、検出回路１６は通信制御回路１２をスタンバイ状態のままで起動させず、一定期間待機状態に入る（ステップＳ９）。データ保存回路１８に保存した復調データは廃棄されるか、次回上書きされる。   On the other hand, when there is no signal addressed to itself, the detection circuit 16 does not start the communication control circuit 12 in the standby state, and enters a standby state for a certain period (step S9). The demodulated data stored in the data storage circuit 18 is discarded or overwritten next time.

図４は、実施の形態１に係る無線装置の受信回路と通信制御回路の動作を説明するための図である。送受信期間では、受信回路１０と通信制御回路１２の両方が動作し、メインデータの受信処理や送信を行う。一方、間欠受信期間では、所定のタイミングで受信回路１０のみ動作し、受信信号に自分宛て信号が有るか無いかを検出する。自分宛て信号が有る場合は、送受信期間に移行して送受信処理を行う。自分宛て信号が無い場合は、一定時間後に再び受信信号に自分宛て信号が有るか無いかを検出する。   FIG. 4 is a diagram for explaining operations of the reception circuit and the communication control circuit of the wireless device according to the first embodiment. In the transmission / reception period, both the reception circuit 10 and the communication control circuit 12 operate to perform main data reception processing and transmission. On the other hand, in the intermittent reception period, only the receiving circuit 10 operates at a predetermined timing, and it is detected whether there is a signal addressed to itself in the received signal. If there is a signal addressed to the user, the transmission / reception process is performed during the transmission / reception period. When there is no signal addressed to itself, it is detected again whether or not there is a signal addressed to itself in the received signal after a certain time.

なお、通信制御回路１２をスタンバイ状態から起動させる場合、一般的には割り込み信号を通信制御回路１２に供給する。また、送受信期間から間欠受信期間に移行する場合、通信制御回路１２は自分自身に対してストップ命令を出してスタンバイ状態となり、受信回路１０の電源をＯＦＦにする。   When the communication control circuit 12 is activated from the standby state, an interrupt signal is generally supplied to the communication control circuit 12. When the transmission / reception period shifts to the intermittent reception period, the communication control circuit 12 issues a stop command to itself to enter a standby state and turns off the power of the reception circuit 10.

以上説明したように、自分宛て信号の有無を検出する機能を受信回路１０に持たせ、自分宛て信号が有る場合にのみ通信制御回路１２を起動させるため、消費電力を低減することができる。また、本実施の形態を採用しても、通信制御回路１２の処理内容は、通常の仕様から大きく変更する必要がない。   As described above, since the receiving circuit 10 has a function of detecting the presence / absence of a signal addressed to itself and the communication control circuit 12 is activated only when the signal addressed to itself exists, power consumption can be reduced. Even if this embodiment is adopted, the processing content of the communication control circuit 12 does not need to be largely changed from the normal specification.

実施の形態２．
図５は、実施の形態２に係る無線装置を示す図である。受信回路１０は、検出回路１６の検出結果を保存する検出結果保存回路２０を更に有する。その他の構成は実施の形態１の構成と同様である。 Embodiment 2. FIG.
FIG. 5 is a diagram illustrating a radio apparatus according to the second embodiment. The receiving circuit 10 further includes a detection result storage circuit 20 that stores the detection result of the detection circuit 16. Other configurations are the same as those of the first embodiment.

本実施の形態に係る無線装置の動作について、図６のフローチャートを参照しながら説明する。
まず、復調回路１４は、受信信号を復調データに復調する（ステップＳ１１）。
次に、検出回路１６は、ヘッダＡ，Ｂの復調データを解析して、受信信号に自分宛て信号が有るか無いかを検出する（ステップＳ１２）。データ保存回路１８は、検出回路１６が復調データを解析している間、復調データを保存する（ステップＳ１３）。検出結果保存回路２０は、検出回路１６の検出結果を保存する（ステップＳ１４）。 The operation of the radio apparatus according to this embodiment will be described with reference to the flowchart of FIG.
First, the demodulation circuit 14 demodulates the received signal into demodulated data (step S11).
Next, the detection circuit 16 analyzes the demodulated data of the headers A and B, and detects whether there is a signal addressed to the received signal (step S12). The data storage circuit 18 stores the demodulated data while the detection circuit 16 is analyzing the demodulated data (step S13). The detection result storage circuit 20 stores the detection result of the detection circuit 16 (step S14).

自分宛て信号が有る場合、検出回路１６は、通信制御回路１２をスタンバイ状態から起動させ（ステップＳ１５）、データ保存回路１８に保存された復調データを通信制御回路１２へ転送させる（ステップＳ１６）。そして、通信制御回路１２は、ヘッダＡ，Ｂを処理する（ステップＳ１７，Ｓ１８）。この際に、通信制御回路１２は、必要に応じて検出結果保存回路２０に保存された検出結果を参照する。さらに、通信制御回路１２は、メインデータを処理する（ステップＳ１９）。   If there is a signal addressed to itself, the detection circuit 16 starts the communication control circuit 12 from the standby state (step S15), and transfers the demodulated data stored in the data storage circuit 18 to the communication control circuit 12 (step S16). Then, the communication control circuit 12 processes the headers A and B (steps S17 and S18). At this time, the communication control circuit 12 refers to the detection result stored in the detection result storage circuit 20 as necessary. Furthermore, the communication control circuit 12 processes the main data (step S19).

一方、自分宛て信号が無い場合、検出回路１６は通信制御回路１２をスタンバイ状態のままで起動させず、一定期間待機状態に入る（ステップＳ２０）。データ保存回路１８に保存した復調データは廃棄されるか、次回上書きされる。   On the other hand, when there is no signal addressed to itself, the detection circuit 16 does not start the communication control circuit 12 in the standby state, and enters a standby state for a certain period (step S20). The demodulated data stored in the data storage circuit 18 is discarded or overwritten next time.

本実施の形態により、実施の形態１と同様の効果を得ることができる。また、一部のデータについて、従来は自分宛て信号が無い場合でも通信制御回路１２が処理していた。これに対し、本実施の形態では、検出回路１６の検出結果を検出結果保存回路２０で保存し、通信制御回路１２が起動した際に検出結果保存回路２０を参照して処理を行うことで、自分宛て信号が無い場合に通信制御回路１２を起動させたのと等価な処理を行うことができる。   According to the present embodiment, the same effect as in the first embodiment can be obtained. Further, conventionally, the communication control circuit 12 has processed some data even when there is no signal addressed to itself. In contrast, in the present embodiment, the detection result of the detection circuit 16 is stored in the detection result storage circuit 20, and when the communication control circuit 12 is activated, the detection result storage circuit 20 is referred to and processing is performed. Processing equivalent to starting the communication control circuit 12 when there is no signal addressed to itself can be performed.

実施の形態３．
図７は、実施の形態３に係る受信信号を示す概念図である。受信信号は、受信側で同期を取るためのプリアンブル信号ＰＲ、受信側で通信路を確立するためのヘッダであるＢＣＣＨ，ＦＣＣＨ、及びメインデータで構成される。ＢＣＣＨは、基地局からの報知用情報信号である。一般的に、無線装置は、まずＢＣＣＨを受信して本システムの信号であることを認識する。また、ＦＣＣＨは、周波数チャネルに関する情報信号であり、メインデータに自分宛て信号が有るか無いかや、メインデータのどこに自分宛て信号が存在するかといった情報を含んでいる。 Embodiment 3 FIG.
FIG. 7 is a conceptual diagram showing a received signal according to the third embodiment. The received signal includes a preamble signal PR for synchronization on the receiving side, BCCH and FCCH which are headers for establishing a communication path on the receiving side, and main data. BCCH is a broadcast information signal from the base station. In general, a wireless device first receives a BCCH and recognizes that it is a signal of this system. The FCCH is an information signal related to the frequency channel, and includes information such as whether or not the main data has a signal addressed to itself and where in the main data the signal addressed to itself exists.

本実施の形態に係る無線装置の動作について、図８のフローチャートを参照しながら説明する。なお、無線装置の構造は実施の形態２の構造と同様である。
まず、復調回路１４は、受信信号を復調データに復調する（ステップＳ２１）。
次に、検出回路１６は、ヘッダであるＢＣＣＨの復調データを解析して、ＢＣＣＨのＣＲＣチェックやＩＤチェックを行い、受信信号が当システムの信号であることを確認する（ステップＳ２２）。データ保存回路１８は、検出回路１６が復調データを解析している間、復調データを保存する（ステップＳ２３）。検出結果保存回路２０は、ＣＲＣチェックやＩＤチェックの結果を保存する（ステップＳ２４）。 The operation of the radio apparatus according to this embodiment will be described with reference to the flowchart of FIG. The structure of the wireless device is the same as that of the second embodiment.
First, the demodulation circuit 14 demodulates the received signal into demodulated data (step S21).
Next, the detection circuit 16 analyzes the demodulated data of BCCH which is a header, performs CRC check and ID check of BCCH, and confirms that the received signal is a signal of this system (step S22). The data storage circuit 18 stores the demodulated data while the detection circuit 16 analyzes the demodulated data (step S23). The detection result storage circuit 20 stores the CRC check and ID check results (step S24).

次に、検出回路１６は、ヘッダであるＦＣＣＨの復調データを解析して、受信信号に自分宛て信号が有るか無いかを検出する（ステップＳ２５）。検出結果保存回路２０は、検出回路１６の検出結果を保存する（ステップＳ２４）。なお、ＢＣＣＨのＣＲＣチェックでＮＧになった場合も自分宛て信号が無いと判断される。   Next, the detection circuit 16 analyzes the demodulated data of the FCCH that is the header, and detects whether or not there is a signal addressed to the received signal (step S25). The detection result storage circuit 20 stores the detection result of the detection circuit 16 (step S24). Even if the BCCH CRC check is NG, it is determined that there is no signal addressed to itself.

自分宛て信号が有る場合、検出回路１６は、通信制御回路１２をスタンバイ状態から起動させ（ステップＳ２６）、データ保存回路１８に保存された復調データを通信制御回路１２へ転送させる（ステップＳ２７）。そして、通信制御回路１２は、ＢＣＣＨ，ＦＣＣＨを処理する（ステップＳ２８，Ｓ２９）。この際に、通信制御回路１２は、必要に応じて検出結果保存回路２０に保存された検出結果を参照する。さらに、通信制御回路１２は、メインデータを処理する（ステップＳ３０）。   If there is a signal addressed to itself, the detection circuit 16 activates the communication control circuit 12 from the standby state (step S26), and transfers the demodulated data stored in the data storage circuit 18 to the communication control circuit 12 (step S27). Then, the communication control circuit 12 processes BCCH and FCCH (steps S28 and S29). At this time, the communication control circuit 12 refers to the detection result stored in the detection result storage circuit 20 as necessary. Furthermore, the communication control circuit 12 processes the main data (step S30).

一方、自分宛て信号が無い場合、検出回路１６は通信制御回路１２をスタンバイ状態のままで起動させず、一定期間待機状態に入る（ステップＳ３１）。データ保存回路１８に保存した復調データは廃棄されるか、次回上書きされる。   On the other hand, when there is no signal addressed to itself, the detection circuit 16 does not start the communication control circuit 12 in the standby state, and enters the standby state for a certain period (step S31). The demodulated data stored in the data storage circuit 18 is discarded or overwritten next time.

本実施の形態により、実施の形態１と同様の効果を得ることができる。また、「ＣＲＣチェックがＮＧ」などの一部のデータについて、従来は自分宛て信号が無い場合でも通信制御回路１２が処理していた。これに対し、本実施の形態では、検出回路１６の検出結果を検出結果保存回路２０で保存し、通信制御回路１２が起動した際に検出結果保存回路２０を参照することで、自分宛て信号が無い場合に通信制御回路１２を起動させたのと等価な処理を行うことができる。   According to the present embodiment, the same effect as in the first embodiment can be obtained. Further, the communication control circuit 12 has conventionally processed some data such as “CRC check is NG” even when there is no signal addressed to itself. On the other hand, in the present embodiment, the detection result of the detection circuit 16 is stored in the detection result storage circuit 20, and when the communication control circuit 12 is activated, the detection result storage circuit 20 is referred to, so that the signal addressed to itself is transmitted. If there is not, a process equivalent to activating the communication control circuit 12 can be performed.

実施の形態１に係る無線装置を示す図である。1 is a diagram illustrating a wireless device according to Embodiment 1. FIG. 実施の形態１に係る受信信号を示す概念図である。4 is a conceptual diagram showing a received signal according to Embodiment 1. FIG. 実施の形態１に係る無線装置の動作を説明するためのフローチャートである。3 is a flowchart for explaining an operation of the radio apparatus according to the first embodiment. 実施の形態１に係る無線装置の受信回路と通信制御回路の動作を説明するための図である。6 is a diagram for explaining operations of a reception circuit and a communication control circuit of the wireless device according to Embodiment 1. FIG. 実施の形態２に係る無線装置を示す図である。6 is a diagram illustrating a radio apparatus according to Embodiment 2. FIG. 実施の形態２に係る無線装置の動作を説明するためのフローチャートである。6 is a flowchart for explaining an operation of the radio apparatus according to the second embodiment. 実施の形態３に係る受信信号を示す概念図である。FIG. 10 is a conceptual diagram showing a received signal according to the third embodiment. 実施の形態３に係る無線装置の動作を説明するためのフローチャートである。10 is a flowchart for explaining an operation of the radio apparatus according to the third embodiment. 無線装置の参考例を示す図である。It is a figure which shows the reference example of a radio | wireless apparatus. 図９の無線装置の動作を説明するためのフローチャートである。10 is a flowchart for explaining the operation of the wireless device of FIG. 9. 図９の無線装置の受信回路と通信制御回路の動作を説明するための図である。It is a figure for demonstrating operation | movement of the receiving circuit and communication control circuit of the radio | wireless apparatus of FIG.

符号の説明Explanation of symbols

１０ 受信回路
１２ 通信制御回路
１４ 復調回路
１６ 検出回路
１８ データ保存回路
２０ 検出結果保存回路 DESCRIPTION OF SYMBOLS 10 Reception circuit 12 Communication control circuit 14 Demodulation circuit 16 Detection circuit 18 Data storage circuit 20 Detection result storage circuit

Claims (2)

受信信号を受信する受信回路と、
前記受信信号を処理する通信制御回路とを備え、
前記受信回路は、
前記受信信号を復調データに復調する復調回路と、
前記復調データを解析して、前記受信信号に自分宛て信号が有るか無いかを検出する検出回路と、
前記復調データを保存するデータ保存回路とを有し、
前記自分宛て信号が有る場合、前記検出回路は、前記通信制御回路を起動させ、前記保存回路に保存された前記復調データを前記通信制御回路へ転送させ、
前記自分宛て信号が無い場合、前記検出回路は、前記通信制御回路を起動させないことを特徴とする無線装置。 A receiving circuit for receiving a received signal;
A communication control circuit for processing the received signal,
The receiving circuit is
A demodulation circuit for demodulating the received signal into demodulated data;
A detection circuit that analyzes the demodulated data and detects whether the received signal has a signal addressed to itself;
A data storage circuit for storing the demodulated data,
When there is a signal addressed to itself, the detection circuit activates the communication control circuit, causes the demodulation data stored in the storage circuit to be transferred to the communication control circuit,
The wireless device according to claim 1, wherein when there is no signal addressed to itself, the detection circuit does not activate the communication control circuit. 前記受信回路は、前記検出回路の検出結果を保存する検出結果保存回路を更に有し、
前記自分宛て信号が有る場合、前記通信制御回路は、前記検出結果保存回路に保存された前記検出結果を参照することを特徴とする請求項１に記載の無線装置。 The receiving circuit further includes a detection result storage circuit that stores the detection result of the detection circuit,
The radio apparatus according to claim 1, wherein when there is a signal addressed to itself, the communication control circuit refers to the detection result stored in the detection result storage circuit.
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