JPH04504340A - DSP-based radio with reduced power requirements - Google Patents

DSP-based radio with reduced power requirements

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Publication number
JPH04504340A
JPH04504340A JP2505473A JP50547390A JPH04504340A JP H04504340 A JPH04504340 A JP H04504340A JP 2505473 A JP2505473 A JP 2505473A JP 50547390 A JP50547390 A JP 50547390A JP H04504340 A JPH04504340 A JP H04504340A
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JP
Japan
Prior art keywords
signal
power
amount
processing means
broadcast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2505473A
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Japanese (ja)
Inventor
ソブティ・アラン
Original Assignee
モトローラ・インコーポレーテッド
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by モトローラ・インコーポレーテッド filed Critical モトローラ・インコーポレーテッド
Publication of JPH04504340A publication Critical patent/JPH04504340A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • H04W52/0283—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks with sequential power up or power down of successive circuit blocks, e.g. switching on the local oscillator before RF or mixer stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0287—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment
    • H04W52/0293—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment having a sub-controller with a low clock frequency switching on and off a main controller with a high clock frequency
    • 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

Abstract

(57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。 (57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 電力要求が低減されたＤＳＰベースの無線機技術分野 この発明は一般的には無線機に関し、かつより特定的にはデジタル信号プロセッ サを含む無線機に関する。[Detailed description of the invention] DSP-based radio technology field with reduced power requirements TECHNICAL FIELD This invention relates generally to radio equipment, and more specifically to digital signal processing. Regarding radio equipment including sa.

背景技術 無線機は一般に放送信号を受信するよう機能する。通常、無線機のユーザは（特 定の周波数または特定のＴＤＭタイムスロットのような）通信資源により放送さ れるすべての信号に興味を持つものではない。注目の多くの放送信号は識別信号 または他の識別表示子（ｉｎｄｉｃｔａ）を有するから、多くの無線機は受信さ れた放送信号を調べて識別信号の存在を判定する信号プロセッサを含む。もし存 在すれば、該無線機はさらにイネーブルされて該放送信号を聞こえるようにし、 見えるようにし、あるいはその特定の放送信号にとって適切な他の状態にする。Background technology Radios generally function to receive broadcast signals. Typically, the user of the radio broadcast on a communication resource (such as a specific frequency or a specific TDM time slot). Not all signals received are of interest. Many of the broadcast signals that are attracting attention are identification signals. or other indicta, many radios have and a signal processor that examines the received broadcast signal to determine the presence of an identification signal. If it exists if present, the radio is further enabled to make the broadcast signal audible; visible or other conditions appropriate for that particular broadcast signal.

例えば、いくつかの無線機はキャリアが特定の監視された通信資源において検知 できない限りスケルチされたままとなっている。他の放送信号は無線機が認識し かつそれに応答できる、トーン信号または可聴範囲外のデジタル信号のような、 特別の識別信号を含む。さらに他の注目信号は意図された無線機に対するＩＤの ような、特定の識別プリアンプルで前置きされるようにすることができる。For example, some radios may be detected by carriers in certain monitored communication resources. It remains squelched as long as possible. Other broadcast signals are recognized by the radio. and respond to it, such as a tone signal or a digital signal outside the audible range, Contains special identification signals. Yet another signal of interest is the ID for the intended radio. It may be prefaced with a specific identification preamble, such as:

無線機の能力および柔軟性を拡大するために、デジタイザおよびデジタル信号プ ロセッサ（ＤＳＰ）が使用されてきている。これらのプロセッサは典型的にはデ ジタル化した受信信号を受信する。ＩＦおよび弁別器処理に等価な、信号のさら なる処理が次にＤＳＰにおいてデジタル様式で行なわれる。結果として得られる 信号は次にアナログ形式に変換されかつ適切なようにさらに処理される。例えば 、結果として得られた信号は音声送信の場合には可聴的にされる。Digitizers and digital signal processors can be used to expand radio capabilities and flexibility. processors (DSPs) have been used. These processors are typically Receive the digitized received signal. Signal processing equivalent to IF and discriminator processing The processing is then performed in a digital manner in the DSP. resulting in The signal is then converted to analog form and further processed as appropriate. for example , the resulting signal is made audible in case of voice transmission.

しかしながら、ＤＳＰは動作している時にかなりの量の電力を消費する。これは 限られた電力資源によってポータプル無線機においてＤＳＰを使用することをめ る場合に特有の問題となる。ＤＳＰの電力消費はＤＳＰが注目の放送信号の存在 および不存在時の双方において動作する場合に特に関心事となる。典型的には、 ＤＳＰは、ＤＳＰそれ自体が注目の放送信号の存在を検知する上で助けとなるた め、注目の放送信号の不存在の場合においてさえも動作しなければならない。注 目の放送信号が知られた時間に発生しない限り、ＤＳＰは該信号をそれが発生す る時に検出するためにアクティブ状態に留まらなければならない。However, DSPs consume significant amounts of power when operating. this is Limited power resources make it difficult to use DSP in portable radios. This is a particular problem when The power consumption of DSP depends on the presence of broadcast signals that DSP pays attention to. This is of particular interest when operating both in the presence and in the absence. Typically, The DSP is designed to help the DSP itself detect the presence of broadcast signals of interest. Therefore, it must operate even in the absence of a broadcast signal of interest. note Unless an eye broadcast signal occurs at a known time, the DSP will must remain active in order to detect when

発明の概要 この発明はＤＳＰが連続的なりＳＰ動作の必要性を避けながら無線機において使 用されることを許容する。Summary of the invention This invention allows DSP to be used in radios while avoiding the need for continuous or SP operation. allowed to be used.

この発明は一般に２つの信号処理ユニットを含む。すなわち、第１のものはＤＳ Ｐを含みかつ第２のものはより少ない能力およびより小さな電力要求を有する処 理ユニットを含む。ＤＳＰベースの信号処理ユニットは注目の放送信号を完全に 処理するよう機能する。低電力の処理ユニットは注目の放送信号の存在を検知す るために機能し、かつそのような信号の検出に応じて、低電力の処理ユニットは ＤＳＰベースの処理ユニットをイネーブルして機能を開始させる。The invention generally includes two signal processing units. That is, the first one is DS P and the second one has less capacity and smaller power requirements. Includes management unit. A DSP-based signal processing unit completely transforms the broadcast signal of interest. function to process. A low-power processing unit detects the presence of a broadcast signal of interest. and upon detection of such a signal, a low-power processing unit Enable the DSP-based processing unit to begin functioning.

この発明の使用により、ＤＳＰベースの処理ユニットの高い電力要求が注目の放 送信号が存在する時にのみ必要とされる。それ以外では、低電力の注目の放送信 号の検出機構が通信資源を監視する。With the use of this invention, the high power requirements of DSP-based processing units can be reduced to a Only needed when a transmit signal is present. Other than that, low power featured broadcasting A signal detection mechanism monitors communication resources.

図面の簡単な説明 第１図は、本発明を示すブロック図であり、第２図は、低電力信号処理ユニット を示すブロック図である。Brief description of the drawing FIG. 1 is a block diagram showing the present invention, and FIG. 2 is a low power signal processing unit. FIG.

発明を実施するための最善のモード 第１図を参照すると、無線機（１００）は一般的には放送信号を受信するための アンテナ（１０１）および受信された放送信号を適切に処理するためのＲＦユニ ット（１０２）を含む。受信された信号は次に低電力信号処理ユニット（１０６ ）にわたされかつまた適切なゲート（１０３）を通りデジタル信号処理ユニット （１０４）（後者は典型的にはモトローラ社の５６０００型のようなりＳＰおよ び該ＤＳＰを制御するためのマイクロプロセッサを含む）にわたされる。デジタ ル信号処理ユニット（１０４）の出力は次に適切な増幅器（１０７）およびスピ ーカ（１０８）あるいは受信されたメツセージのタイプにとって適切な出力装置 に結合する。The best mode to carry out the invention Referring to FIG. 1, a radio device (100) is generally used for receiving broadcast signals. An antenna (101) and an RF unit for properly processing received broadcast signals. (102). The received signal is then processed by a low power signal processing unit (106). ) and also through a suitable gate (103) to the digital signal processing unit. (104) (The latter typically includes SP and Motorola models such as the 56000. and a microprocessor for controlling the DSP). Digital The output of the signal processing unit (104) is then connected to a suitable amplifier (107) and a speaker signal processing unit (104). (108) or output device appropriate for the type of message received. join to.

第２図を参照すると、低電力信号処理ユニット（１０６）はＲＦユニット（１０ ２）から出力信号を受信するための適切なＩＦユニット（２０１）、元の変調信 号を復元する上での助けとするためにＩＦユニット（２０１）の出力を処理する ための弁別器（２０２）、そして復元された信号を調べかつ適切な識別信号が存 在するか否かを判定するための処理ユニット（２０３）を含む。該処理ユニット （２０３）は、モトローラ社のＭＣ６３０３型プロセツサのような、任意の比較 的単純なかつ低電力の装置とすることができる。Referring to FIG. 2, the low power signal processing unit (106) includes the RF unit (10 2) a suitable IF unit (201) for receiving the output signal from the original modulated signal; processing the output of the IF unit (201) to aid in restoring the code; a discriminator (202) for includes a processing unit (203) for determining whether the The processing unit (203) can be used for any comparison, such as Motorola's MC6303 type processor. It can be an extremely simple and low power device.

注目の放送信号の存在を検知すると、低電力信号処理ユニットの処理ユニット（ ２０３）はゲート（１０３）に信号を提供し、それによりＲＦ倍信号デジタル信 号処理ユ二ット（１０４）に提供されるようにする。同時に、処理ユニット（２ ０３）はイネーブル信号をデジタル信号処理ユニット（１０４）に提供しそのユ ニットをアクティベイトしかつそれに入力信号の処理を開始させる。Upon detecting the presence of a broadcast signal of interest, the processing unit of the low power signal processing unit ( 203) provides a signal to the gate (103), thereby converting the RF multiplied signal into a digital signal. and is provided to the signal processing unit (104). At the same time, the processing unit (2 03) provides an enable signal to the digital signal processing unit (104) and Activates the unit and causes it to begin processing the input signal.

以上のように構成することにより、デジタル信号処理ユニットは注目の放送信号 が検出できる場合にのみ動作するであろう。それ以外では、低電力信号処理ユニ ットが受信放送信号を監視しかつ注目の放送信号の存在および不存在の関数とし てデジタル信号処理ユニットの付勢を制御するＦＩＧ、２ 国際調査報告With the above configuration, the digital signal processing unit can handle the broadcast signal of interest. will only work if it can be detected. Otherwise, the low power signal processing unit The receiver monitors the received broadcast signal and as a function of the presence and absence of the broadcast signal of interest. FIG. 2 controls the energization of the digital signal processing unit. international search report

Claims (2)

【特許請求の範囲】[Claims] １．放送信号を受信するための信号受信手段、および受信された放送信号を第１ の信号に変換するよう動作するために第１の量の電力を必要とするデジタル信号 処理手段を有する無線機であって、 Ａ）制御信号に応答し、かつ 前記信号受信手段とデジタル信号処理手段の間に動作可能に結合され、 前記信号受信手段により受信された放送信号が前記デジタル信号処理手段に提供 されることを選択的に許容するための、 スイッチ手段、 Ｂ）前記信号受信手段に動作可能に結合され、かつ第２の量の電力を必要とし、 該第２の量の電力は前記第１の量の電力より小さく、 注目の放送信号を検知しかつそけれに応じて前記切替え手段に制御信号を提供す るための、 低電力信号処理手段、 を具備することを特徴とする無線機。1. a signal receiving means for receiving a broadcast signal; and a signal receiving means for receiving a broadcast signal; a digital signal that requires a first amount of power to operate to convert it into a signal of A radio device having a processing means, A) in response to a control signal, and operably coupled between the signal receiving means and the digital signal processing means; The broadcast signal received by the signal receiving means is provided to the digital signal processing means. to selectively allow switch means, B) operably coupled to the signal receiving means and requiring a second amount of power; the second amount of power is less than the first amount of power; detecting a broadcast signal of interest and providing a control signal to said switching means accordingly; In order to low power signal processing means; A wireless device comprising: ２．放送信号を受信するための信号受信手段、および前記受信された放送信号を 第１の信号に変換するよう動作するために第１の量の電力を必要とするデジタル 信号処理手段を有する無線機であって、 前記信号受信手段に動作可能に結合され、かつ第２の量の電力を必要とし、該第 ２の量の電力は前記第１の量の電力より少なく、 注目の放送信号を検知しかつ前記デジタル信号処理手段の電力消費を実質的に制 御するために前記デジタル信号処理手段に制御信号を提供する、 低電力信号処理手段を具備することを特徴とする無線機。2. a signal receiving means for receiving a broadcast signal; and a signal receiving means for receiving the received broadcast signal. a digital signal that requires a first amount of power to operate to convert to a first signal; A radio device having a signal processing means, operably coupled to the signal receiving means and requiring a second amount of power; the second amount of power is less than the first amount of power; detecting a broadcast signal of interest and substantially controlling power consumption of said digital signal processing means; providing a control signal to the digital signal processing means for controlling the digital signal processing means; A radio device characterized by comprising low power signal processing means.
JP2505473A 1989-03-20 1990-03-13 DSP-based radio with reduced power requirements Pending JPH04504340A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32560389A 1989-03-20 1989-03-20
US325,603 1989-03-20

Publications (1)

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JPH04504340A true JPH04504340A (en) 1992-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2505473A Pending JPH04504340A (en) 1989-03-20 1990-03-13 DSP-based radio with reduced power requirements

Country Status (5)

Country Link
EP (1) EP0463104A4 (en)
JP (1) JPH04504340A (en)
KR (1) KR950000050B1 (en)
CA (1) CA2045519C (en)
WO (1) WO1990011652A1 (en)

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CA2045519A1 (en) 1990-09-21
KR950000050B1 (en) 1995-01-07
EP0463104A1 (en) 1992-01-02
KR920700497A (en) 1992-02-19
EP0463104A4 (en) 1993-01-13
WO1990011652A1 (en) 1990-10-04
CA2045519C (en) 1994-11-08

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