JP2001215268A - Receiver for global positioning system - Google Patents

Receiver for global positioning system

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Publication number
JP2001215268A
JP2001215268A JP2000027352A JP2000027352A JP2001215268A JP 2001215268 A JP2001215268 A JP 2001215268A JP 2000027352 A JP2000027352 A JP 2000027352A JP 2000027352 A JP2000027352 A JP 2000027352A JP 2001215268 A JP2001215268 A JP 2001215268A
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JP
Japan
Prior art keywords
gps
intermittent reception
circuit
receiving
global positioning
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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
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JP2000027352A
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Japanese (ja)
Inventor
Koji Hasegawa
Tetsuya Naruse
Koichiro Teranishi
孝一郎 寺西
哲也 成瀬
浩二 長谷川
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Sony Corp
ソニー株式会社
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Application filed by Sony Corp, ソニー株式会社 filed Critical Sony Corp
Priority to JP2000027352A priority Critical patent/JP2001215268A/en
Publication of JP2001215268A publication Critical patent/JP2001215268A/en
Application status is Pending legal-status Critical

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/10Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology
    • Y02D70/44Radio transmission systems, i.e. using radiation field
    • Y02D70/448Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • Y02D70/449Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Abstract

PROBLEM TO BE SOLVED: To provide a receiver for a global positioning system capable of reporting an accurate present position while reducing electricity consumption. SOLUTION: This GPS(global positioning system) receiver 11 used for detecting the position of a movable body is provided with a GPS receiving circuit 3 and a GPS demodulating circuit 4, for intermittently receiving and demodulating a satellite signal transmitted from a GPS satellite, and an intermittent-reception control circuit 12 for controlling intermittent reception intervals for the intermittent reception at the circuits 3, 4 according to the moving speed of the movable body. This enables the intermittent reception and demodulation to be performed with optimal intermittent reception intervals according to the speed of the movable body. A more accurate present position can be reported to a user while keeping unchanged a positioning error made during the intermittent reception without increasing electricity consumption.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は全地球測位システムの受信装置に関し、例えば移動体の位置測定を行うGP The present invention relates to relates to receiving apparatus of the global positioning system, for example, GP to perform position measurements of the mobile unit
S(Global Positioning System) の受信装置に適用して好適なものである。 And applied to a receiving device S (Global Positioning System) is suitable.

【0002】 [0002]

【従来の技術】従来、GPSにおいては地球上を周回する複数個のGPS衛星からそれぞれ送信される衛星信号をGPS受信装置によって受信し、当該受信した衛星信号を解析することにより、当該GPS受信装置と各GP Conventionally, by receiving satellite signals transmitted respectively from a plurality of GPS satellites orbiting the earth by the GPS receiver, analyzes the satellite signal the received in GPS, the GPS receiver and each GP
S衛星との距離をそれぞれ取得し、これらを基にGPS Gets the distance between the S satellite, respectively, GPS based on these
受信装置を搭載した移動体の現在位置を算出するようになされている。 It is made which are to calculate the current position of the mobile body incorporating a receiving device.

【0003】このGPS衛星から送信される衛星信号は、各GPS衛星毎に異なる種類の符号系列でなるPN [0003] satellite signal transmitted from the GPS satellites, PN composed by different types of code sequences for each GPS satellite
(Pseudo noise)コードすなわち疑似雑音符号によってスペクトラム拡散された信号である。 A (Pseudo noise) code That signal spectrally spread by a pseudo noise code.

【0004】従ってGPS受信装置は、複数種類のGP [0004] Thus the GPS receiver has a plurality of types of GP
S衛星毎にそれぞれ応じた局部PNコードを発生し得るようになされており、発生した局部PNコードの位相を衛星信号のPNコードの位相に合わせることにより同期獲得し、その衛星信号に対してトラッキングをかけることにより同期補足した後、スペクトラム逆拡散処理を施すことにより各GPS衛星からの航法メッセージ(測位計算のための軌道情報等)をそれぞれ復調し、当該航法メッセージに基づいて現在位置を算出するようになされている。 And configured so as to be able to generate local PN codes corresponding respectively to each S satellite, acquires synchronization by matching the generated local PN code phase PN code phase of the satellite signal, the tracking for the satellite signal after synchronizing supplemented by applying a demodulates (orbit information and the like for the positioning calculation) navigation message from each GPS satellite, respectively by applying the inverse spread spectrum processing and calculates the current position based on the navigation message It has been made so.

【0005】実際上、図4に示すようにGPS受信装置1は、GPSアンテナ2及びGPS受信回路3を介して各GPS衛星から受信したGPS受信信号S1をそれぞれGPS復調回路4に送出する。 [0005] In practice, the GPS receiving device 1 as shown in FIG. 4 sends via the GPS antenna 2 and the GPS receiving circuit 3 the GPS reception signal S1 received from each GPS satellite to the GPS demodulator circuit 4, respectively.

【0006】GPS復調回路4は、間欠受信制御回路5 [0006] GPS demodulation circuit 4, the intermittent reception control circuit 5
から供給される間欠受信制御信号S3に基づく間欠受信タイミングで各GPS衛星からのGPS受信信号S1を受信し、局部PNコードを用いて同期獲得した後にスペクトラム逆拡散処理を施すことにより復調処理を施し、 Receiving a GPS reception signal S1 from the GPS satellite at the intermittent reception timing based on the discontinuous reception control signal S3 supplied, the demodulation processing by performing inverse spread spectrum processing after acquiring synchronization with a local PN code applied from ,
その結果得られる各GPS衛星毎の受信データS2をそれぞれ測位回路6に送出する。 And it sends the result input data S2 for each GPS satellite obtained by respectively positioning circuit 6.

【0007】測位回路6は、間欠受信タイミング毎に得られる各GPS衛星毎の受信データS2に基づいてGP [0007] positioning circuit 6, GP based on the reception data S2 of each GPS satellite is obtained for each intermittent reception timing
S受信装置1と各GPS衛星との距離をそれぞれ取得し、これらを基に移動体の現在位置を測位するようになされている。 Respectively obtaining distances between the S receiver 1 and each of the GPS satellites is adapted to measure the current position of the mobile Based on these.

【0008】 [0008]

【発明が解決しようとする課題】ところでかかる構成のGPS受信装置1においては、消費電力を極力低減させるために、間欠受信制御信号S3に基づく間欠受信タイミングでのみGPS受信信号S1を間欠的に受信して復調処理し、その結果得られる測位位置を所定のマーク等によって表示部の地図上に重ねて表示するようになされている。 In THE INVENTION It is an object to be solved the way the GPS receiver 1 having the above configuration, in order to minimize reduce power consumption, intermittently receive the GPS received signal S1 only at discontinuous reception timing based on the discontinuous reception control signal S3 and then demodulation processing is adapted to display superimposed on the map of the display unit by the resulting measured position a predetermined mark, or the like.

【0009】すなわちGPS受信装置1は、例えば図5 [0009] That GPS receiver 1, for example, FIG. 5
に示すように、GPS受信信号S1を間欠受信する受信間隔が長く設定される程、待ち受け時間が長くなって消費電力を低減することができる。 As shown in, degree of reception interval for intermittently receiving the GPS received signal S1 is set longer, it is possible to reduce the power consumption becomes longer standby time.

【0010】しかしながらGPS受信装置1は、図6に示すように、移動体が一定速度で移動中にGPS受信信号S1の受信間隔が長くなると、消費電力を低減することはできるが、受信間隔の長さに比例して移動中の移動体の現在位置と測位位置との誤差が大きくなって、正確な現在位置をユーザに対して通知し得なくなるという問題があった。 [0010] However the GPS receiver 1, as shown in FIG. 6, when the moving body receiving interval of the GPS received signal S1 becomes longer while moving at a constant speed, although it is possible to reduce power consumption, the reception interval increased error between the current position and the determined position of the moving body in motion is proportional to the length, there is a problem that not obtained to notify the user the exact current position.

【0011】本発明は以上の点を考慮してなされたもので、消費電力を低減しつつ一段と正確な現在位置を通知し得る全地球測位システムの受信装置を提案しようとするものである。 [0011] The present invention has been made in consideration of the above points and is intended to provide a receiving apparatus of the global positioning system capable of notifying the more accurate current position while reducing power consumption.

【0012】 [0012]

【課題を解決するための手段】かかる課題を解決するため本発明においては、移動体の位置を検出する全地球測位システムの受信装置において、全地球測位システムの衛星から送信される衛星信号を間欠受信して復調処理する受信手段と、移動体の移動速度に応じて受信手段における間欠受信の間欠受信間隔を制御する制御手段とを設けることにより、移動体の移動速度に応じた最適な間欠受信間隔で衛星信号を間欠受信して復調処理することができるので、間欠受信を行ったときの測位誤差を一定の精度に保持したまま、消費電力を増加させることなく一段と正確な現在位置をユーザに対して通知することができる。 In the present invention for solving the SUMMARY OF THE INVENTION The above problems, in the receiving apparatus of the global positioning system for detecting the position of the moving body, an intermittent satellite signals transmitted from a satellite global positioning system receiving means for demodulating the received, by providing a control means for controlling the intermittent reception interval of the intermittent reception in the receiving means in response to the movement speed of the moving body, the optimum intermittent reception in accordance with the moving speed of the moving body it is possible to demodulation processing intermittently received satellite signal at intervals, while maintaining the positioning error when performing intermittent reception to constant accuracy, the user more accurate current position without increasing the power consumption it can be notified for.

【0013】 [0013]

【発明の実施の形態】以下図面について、本発明の一実施の形態を詳述する。 For PREFERRED EMBODIMENTS be described with reference to the accompanying drawings an embodiment of the present invention.

【0014】(1)第1の実施の形態 図4との対応部分に同一符号を付して示す図1において、11は全体として第1の実施の形態における全地球測位システムの受信装置としてのGPS受信装置を示し、当該GPS受信装置11が移動体として例えば自動車に搭載されており、図示しないバッテリから供給される電力に基づいて各回路が動作する。 [0014] In (1) Figure 1 where the same reference numerals are assigned to corresponding parts in the form 4 of the first embodiment, as a receiving apparatus of the global positioning system in the first embodiment as a whole 11 shows the GPS receiver, the GPS receiver 11 is mounted, for example, an automobile as a movable body, the circuit operates based on electric power supplied from a battery (not shown).

【0015】この場合、GPS受信装置11は、まずG [0015] In this case, GPS receiver 11, first G
PSアンテナ2及びGPS受信回路3を介して各GPS Each GPS via a PS antenna 2 and the GPS receiver circuit 3
衛星から受信したGPS受信信号S1をそれぞれGPS GPS The GPS reception signal S1 received from a satellite, respectively
復調回路4に送出する。 It is sent to the demodulation circuit 4.

【0016】GPS復調回路4は、間欠受信制御回路1 The GPS demodulator circuit 4, the intermittent reception control circuit 1
2から供給される間欠受信制御信号S12に基づく間欠受信タイミングで各GPS衛星からのGPS受信信号S GPS received signal S from the GPS satellite at the intermittent reception timing based on the discontinuous reception control signal S12 supplied from the 2
1をそれぞれ受信し、局部PNコードを用いて同期獲得した後にスペクトラム逆拡散処理を施すことにより復調処理を施し、その結果得られる各GPS衛星毎の受信データS2をそれぞれ測位回路6に送出する。 1 received respectively, demodulates by performing inverse spread spectrum processing after acquiring synchronization with a local PN code, and sends the result input data S2 for each GPS satellite obtained by respectively positioning circuit 6.

【0017】測位回路6は、間欠受信タイミング毎に得られる各GPS衛星毎の受信データS2に基づいてGP The positioning circuit 6, GP based on the reception data S2 of each GPS satellite is obtained for each intermittent reception timing
S受信装置1と各GPS衛星との距離をそれぞれ取得し、これらを基に測位した結果(以下、これを測位位置と呼ぶ)の位置データS6を算出し、これを移動速度検出回路13に送出する。 Gets the S receiver 1 the distance between each GPS satellite, respectively, as a result of positioning based on these (hereinafter, referred to as positioning position) calculates the position data S6 in, sends this to the moving speed detection circuit 13 to.

【0018】同時に測位回路6は、位置データS6を液晶ディスプレイでなる表示部14に送出する。 [0018] At the same time the positioning circuit 6 sends to the display unit 14 composed of the position data in S6 LCD. 表示部1 The display unit 1
4は、位置データS6に対応した地図上の地点に所定のマークを表示することにより、ユーザに対して測位位置を現在位置として通知するようになされている。 4, by displaying a predetermined mark at a point on the map corresponding to the position data S6, is adapted to notify the determined position as the current position to the user.

【0019】移動速度検出回路13は、測位回路6から間欠受信タイミング毎に順次供給される2つの位置データS6に対応した2地点の距離間隔と、間欠受信タイミングの時間間隔とに基づいて移動体の移動速度を算出し、その結果得られる移動速度情報S13を間欠受信制御回路12に送出する。 The moving speed detection circuit 13, the moving body on the basis of the positioning circuit 6 and the distance interval between the two points corresponding to two position data S6 to be sequentially supplied to each intermittent reception timing, to the time interval of the intermittent reception timing It calculates the moving speed of and transmits the traveling speed information S13 obtained as a result of the intermittent reception control circuit 12.

【0020】間欠受信制御回路12は、CPU(Central The intermittent reception control circuit 12, CPU (Central
Processing Unit) でなり、移動速度検出回路13から供給される移動体の移動速度情報S13に基づいてGP Made of a Processing Unit), GP based on the moving speed information S13 in the mobile supplied from the movement speed detection circuit 13
S復調回路4における間欠受信間隔を制御するようになされている。 It is adapted to control the intermittent reception interval in S demodulation circuit 4.

【0021】すなわち間欠受信制御回路12は、図2に示すように移動速度情報S13に基づいて移動体の移動速度が高くなるに連れて、GPS復調回路4における間欠受信間隔を短くし、移動体の移動速度が低くなるに連れて、GPS復調回路4における間欠受信間隔を長くするように制御する。 [0021] That intermittent reception control circuit 12, as the moving speed of the moving body is increased on the basis of the traveling speed information S13 as shown in FIG. 2, by shortening the intermittent reception interval of the GPS demodulation circuit 4, the mobile as the moving speed of the drops is controlled so as to increase the intermittent receiving interval of the GPS demodulation circuit 4.

【0022】この場合、間欠受信制御回路12は間欠受信制御テーブル(図示せず)を内部メモリに格納しており、当該間欠受信制御テーブルを基に移動体の移動速度に応じて間欠受信間隔を制御する。 [0022] In this case, the intermittent reception control circuit 12 stores a discontinuous reception control table (not shown) in the internal memory, the intermittent reception interval in accordance with the moving speed of the moving body based on the discontinuous reception control table Control.

【0023】因みに移動速度と間欠受信間隔との関係は、現在位置と測位位置との誤差を一定に保持する際の精度に依存しており、現在位置と測位位置との誤差を少なくする場合には、移動速度に係わらず間欠受信間隔がより短くなるような間欠受信制御テーブルに基づいて間欠受信間隔を制御すれば良い。 [0023] Incidentally relationship between the moving speed and the intermittent reception interval is an error between the current position and the determined position depending on the accuracy when held constant, in the case of reducing the error between the current position and the positioning position may be controlled intermittent receiving interval based on the intermittent reception control table as listen interval regardless of the moving speed becomes shorter.

【0024】以上の構成において、GPS受信装置11 [0024] In the above configuration, GPS receiver 11
は移動速度検出回路13から供給される移動速度情報S Moving speed information S is supplied from the movement speed detection circuit 13
13に基づいて移動体の移動速度が例えば時速100[K Moving speed of the moving body, for example, per hour 100 based on the 13 [K
m]程度の高速移動時には、間欠受信制御テーブルに従ってGPS復調回路4における間欠受信間隔を短くし、移動体の移動速度が例えば時速5[Km]程度の歩行速度で低速移動時には、間欠受信制御テーブルに従ってGPS復調回路4における間欠受信間隔を長くするように制御する。 During high-speed movement of about m], by shortening the intermittent reception interval of the GPS demodulation circuit 4, during low-speed movement at a walking speed of about movement speed for example per hour 5 [Km] of the moving object in accordance with intermittent reception control table, the intermittent receiving control table It controls to lengthen the intermittent receiving interval of the GPS demodulation circuit 4 in accordance with.

【0025】このようにGPS受信装置11は、移動体の移動速度に応じてGPS受信信号S1を最適な間欠受信間隔で間欠受信して復調処理するように制御することにより、移動速度が可変しながら移動する移動体に搭載された状態で、GPS受信信号S1を間欠受信したときでも、移動体の現在位置と測位位置との誤差を一定範囲内に保持したまま測位することができる。 [0025] Thus the GPS receiver 11 controls so that demodulation processing intermittently received at the optimum intermittent receiving interval the GPS reception signal S1 in accordance with the moving speed of the moving body, the moving speed of the variable and while in a state of being mounted on a movable body that moves, even when intermittently receiving the GPS received signal S1, may be positioning while holding within a certain range of error between the current position and the determined position of the mobile unit.

【0026】またGPS受信装置11は、低速移動時にはGPS復調回路4における間欠受信間隔を長くすることにより、移動体の現在位置と測位位置との誤差を一定に保持しつつ消費電力を無駄に浪費することを防止してバッテリの寿命を一段と延ばすことができる。 [0026] GPS receiver 11 by lengthening the intermittent receiving interval of the GPS demodulation circuit 4 at the time of low-speed movement, wasting power consumption while maintaining the error between the current position and the determined position of the moving body at a constant it can further increase battery life by preventing that.

【0027】以上の構成によれば、GPS受信装置11 According to the above configuration, GPS receiver 11
は移動体の移動速度に応じてGPS受信信号S1の間欠受信間隔を最適に制御することにより、移動体の移動速度が可変する場合に間欠受信を行ったときでも、常時一定の誤差範囲内で移動体の現在位置をユーザに通知することができる。 By optimally controlling the intermittent reception interval of the GPS reception signal S1 in accordance with the moving speed of the moving body, when the moving speed of the moving body performs an intermittent reception when also variable, in always constant error range it is possible to know the current location of the mobile user.

【0028】(2)第2の実施の形態 図1との対応部分に同一符号を付して示す図3において、21は全体として第2の実施の形態におけるGPS [0028] (2) 3 where the same reference numerals are assigned to corresponding parts of the form Figure 1 of a second embodiment, GPS in the second embodiment as a whole 21
受信装置を示し、移動体として例えば携帯電話機に搭載されており、新たにCDMA送受信部20が組み合わされた構成となっている。 Indicates the reception device are mounted as a moving body, for example, in the mobile phone has become a new CDMA transceiver 20 are combined configuration.

【0029】この場合GPS受信装置21は、CDMA [0029] In this case GPS receiver 21, CDMA
送受信部20においてCDMAセルラーシステムの基地局(図示せず)からCDMAアンテナ22及びCDMA CDMA antenna 22 in the transmission and reception unit 20 base station of a CDMA cellular system (not shown) and CDMA
送受信回路23を介して受信したCDMA受信信号S2 CDMA reception signal S2 received through the transmitting and receiving circuit 23
3をCDMA復調回路24に送出する。 3 and sends the CDMA demodulation circuit 24.

【0030】CDMA復調回路24は、CDMA制御回路25から供給されるCDMA復調制御信号S26に基づいてCDMA受信信号S23に対して同期獲得した後に復調処理を施し、その復調結果である受信データS2 The CDMA demodulation circuit 24 demodulates after obtaining synchronization for CDMA reception signal S23 on the basis of a CDMA demodulation control signal S26 supplied from the CDMA control circuit 25, the reception data S2 that is the demodulation result
4をCDMA制御回路25に送出する。 4 is sent to the CDMA control circuit 25.

【0031】一方CDMA制御回路25は、送信すべきデータや音声等の送信データS27をCDMA変調回路26に対して送出すると共に、当該CDMA変調回路2 On the other hand CDMA control circuit 25, the transmission data S27 in such as data and voice to be transmitted sends out for CDMA modulating circuit 26, the CDMA modulation circuit 2
6におけるスペクトラム拡散処理を制御するCDMA変調制御信号S28をCDMA変調回路26に対して送出する。 The CDMA modulation control signal S28 for controlling the spread spectrum processing is sent for CDMA modulating circuit 26 in 6.

【0032】CDMA変調回路26は、CDMA変調制御信号S28に従って送信データS27を変調処理し、 The CDMA modulator 26 modulates the transmission data S27 in accordance with CDMA modulation control signal S28,
これをスペクトラム拡散処理されたCDMA送信信号S CDMA transmission signal S which has been spread spectrum processing
29としてCDMA送受信回路23を介してCDMAアンテナ22からCDMAセルラーシステムの基地局へ送信する。 Transmitted from CDMA antenna 22 to the base station of the CDMA cellular system via a CDMA transceiver circuit 23 as 29.

【0033】ところでCDMA制御回路25は、CDM [0033] By the way CDMA control circuit 25, CDM
A復調回路24から供給された受信データS24を解析することにより、CDMAセルラーシステムの基地局によって測位された携帯電話機の現在位置を認識し、これをCDMA位置データS25として移動速度検出回路1 By analyzing the received data S24 supplied from the A demodulating circuit 24, recognizes the current position of the positioning has been the mobile phone by a base station of a CDMA cellular system, the mobile speed detection circuit 1 so as CDMA location data S25
3に供給する。 Supplied to the 3.

【0034】移動速度検出回路13は、CDMA送受信部20のCDMA制御回路25から供給されるCDMA The moving speed detection circuit 13, CDMA supplied from the CDMA control circuit 25 of the CDMA transceiver 20
位置データS25に基づいて携帯電話機の移動速度を算出し、その結果得られる移動速度情報S13を間欠受信制御回路12に送出する。 Based on the position data S25 to calculate the movement velocity of the mobile phone, and sends the moving speed information S13 obtained as a result of the intermittent reception control circuit 12.

【0035】間欠受信制御回路12は、この場合も図2 The intermittent reception control circuit 12, also in this case 2
に示すように、移動速度情報S13に基づいて移動体の移動速度が高くなるに連れて、GPS復調回路4における間欠受信間隔を短くし、移動体の移動速度が低くなるに連れて、GPS復調回路4における間欠受信間隔を長くするように制御する。 As shown in, as the moving speed of the moving body is increased on the basis of the traveling speed information S13, to shorten the intermittent reception interval of the GPS demodulation circuit 4, as the moving speed of the moving body is low, GPS demodulation It controls to lengthen the intermittent reception interval in the circuit 4.

【0036】なお、測位回路6によって測位された位置データS6は、移動速度検出回路13で移動速度情報S [0036] The position data S6 which is the positioning by the positioning circuit 6, the traveling speed information S at a moving speed detection circuit 13
13を算出するために用いられるのではなく、位置データS6に対応した地点を表示部14の地図上に表示するためにのみ用いられるようになされている。 13 rather than being used to calculate the, are made As used only for display on the map of the display unit 14 the point corresponding to the position data S6.

【0037】以上の構成においてGPS受信装置21 The above GPS receiver in the configuration 21
は、CDMA送受信部20から供給されたCDMA位置データS25に基づいて携帯電話機の移動速度を算出し、当該移動速度に応じてGPS復調回路4における間欠受信間隔を制御することにより、移動速度が可変しながら移動する携帯電話機に搭載された状態で、GPS受信信号S1を間欠受信したときでも携帯電話機の現在位置と測位位置との誤差を一定範囲内に保持したまま測位することができる。 , By calculating a moving speed of the mobile phone based on CDMA location data S25 supplied from the CDMA transceiver unit 20, controls the intermittent receiving interval of the GPS demodulation circuit 4 in accordance with the moving speed, the moving speed of the variable in a state of being mounted in a mobile phone moves while it is possible that positions while retaining the error between the current position and the determined position of the mobile telephone within a certain range even when intermittently receiving the GPS received signal S1.

【0038】以上の構成によれば、GPS受信装置21 [0038] According to the above configuration, GPS receiver 21
は携帯電話機の移動速度に応じてGPS受信信号S1の間欠受信間隔を最適に制御することにより、携帯電話機の移動速度が可変する場合に間欠受信を行ったときでも、常時一定の誤差範囲内で携帯電話機の現在位置をユーザに通知することができる。 Is by optimally controlling the intermittent reception interval of the GPS reception signal S1 in accordance with the moving speed of the mobile phone, when the moving speed of the mobile phone makes a discontinuous reception when also variable, in always constant error range it is possible to know the current position of the mobile phone to the user.

【0039】(3)他の実施の形態 なお上述の第1及び第2の実施の形態においては、移動体の移動速度情報S13を移動速度検出回路13で算出し、これを間欠受信制御回路12に送出するようにした場合について述べたが、本発明はこれに限らず、例えば自動車の車速パルスに基づいて算出した移動速度情報S [0039] (3) In the embodiment noted first and second embodiments described above in other embodiments, the moving speed information S13 in the moving body is calculated by the moving velocity detection circuit 13, which the intermittent reception control circuit 12 it has dealt with the case of delivery, the present invention is not limited to this, for example, the moving speed information S calculated based on the vehicle speed pulse
13を間欠受信制御回路12に送出するようにしても良い。 13 may be transmitted to the intermittent reception control circuit 12.

【0040】また上述の第1及び第2の実施の形態においては、移動体の移動速度情報S13を移動速度検出回路13で算出し、これを間欠受信制御回路12に送出するようにした場合について述べたが、本発明はこれに限らず、例えばGPS復調回路4の内部に周波数誤差検出回路(図示せず)を設け、当該周波数誤差検出回路により求めたドップラー周波数を基に移動速度情報S13を算出し、これを間欠受信制御回路12に送出するようにしても良い。 Further in the first and second embodiments described above, the moving speed information S13 in the moving body is calculated by the moving velocity detection circuit 13, for if this were to be sent to the intermittent reception control circuit 12 It has been described, the present invention is not limited to this, for example, inside the GPS demodulation circuit 4 is provided a frequency error detection circuit (not shown), the traveling speed information S13 based on the Doppler frequency obtained by the frequency error detecting circuit calculated, which may be transmitted to the intermittent reception control circuit 12.

【0041】さらに上述の第1及び第2の実施の形態においては、GPSアンテナ2及びGPS受信回路3で受信したGPS受信信号S1を間欠受信制御回路12の制御に基づいてGPS復調回路4で間欠受信して復調処理するようにした場合について述べたが、本発明はこれに限らず、間欠受信制御回路12の制御に基づいてGPS [0041] In a further first and second embodiments described above, the intermittent the GPS reception signal S1 received by the GPS antenna 2 and the GPS receiver circuit 3 in the GPS demodulation circuit 4 based on the control of the intermittent reception control circuit 12 received and it has dealt with the case of demodulation processing, the present invention is not limited to this, GPS based on the control of the intermittent reception control circuit 12
受信回路3でGPS受信信号S1を間欠受信するようにしても良い。 The GPS reception signal S1 by the reception circuit 3 may be intermittently received.

【0042】さらに上述の第1及び第2の実施の形態においては、間欠受信制御回路12が内部メモリに格納した間欠受信制御テーブルを基に移動速度に応じて間欠受信間隔を制御するようにした場合について述べたが、本発明はこれに限らず、移動移動速度に応じて間欠受信間隔をフレキシブルに変更するようにしても良い。 [0042] In a further first and second embodiments described above, the intermittent reception control circuit 12 so as to control the intermittent receiving interval according to the moving speed based on intermittent reception control table stored in the internal memory it is described, the present invention is not limited thereto, may be changed to listen interval flexibly according to the moving the moving speed.

【0043】さらに上述の第1及び第2の実施の形態においては、全地球測位システムの受信装置としてのGP [0043] In still first and second embodiments described above, GP as a receiving apparatus of the global positioning system
S受信装置11及び21が、受信手段としてのGPSアンテナ2、GPS受信回路3及びGPS復調回路4によってGPS衛星から送信される衛星信号を間欠受信して復調処理し、制御手段としての間欠受信制御回路12によって移動体の移動速度に応じて間欠受信間隔を制御するようにした場合について述べたが、本発明はこれに限らず、他の種々の受信手段及び制御手段によって間欠受信間隔を制御するようにしても良い。 S receiver 11 and 21, the satellite signals transmitted from GPS satellites by the GPS antenna 2, GPS receiver circuit 3 and the GPS demodulation circuit 4 as a receiving means intermittently receives demodulates, discontinuous reception control as the control means it has dealt with the case of controlling the intermittent receiving interval according to the moving speed of the moving body by the circuit 12, the present invention is not limited to this, controls the intermittent receiving interval by various other receiving means and control means it may be so.

【0044】 [0044]

【発明の効果】上述のように本発明によれば、移動体の位置を検出する全地球測位システムの受信装置において、全地球測位システムの衛星から送信される衛星信号を間欠受信して復調処理する受信手段と、移動体の移動速度に応じて受信手段における間欠受信の間欠受信間隔を制御する制御手段とを設けることにより、移動体の移動速度に応じた最適な間欠受信間隔で衛星信号を間欠受信して復調処理することができるので、間欠受信を行ったときの測位誤差を一定の精度に保持したまま、消費電力を増加させることなく一段と正確な現在位置をユーザに対して通知することができる。 Effects of the Invention According to the present invention as described above, in the receiving apparatus of the global positioning system for detecting the position of a moving body, satellite signals transmitted from a satellite global positioning system with intermittent reception demodulates receiving means for, by providing a control means for controlling the intermittent reception interval of the intermittent reception in the receiving means in response to the movement speed of the moving body, satellite signals with optimum intermittent receiving interval according to the movement speed of the moving body it is possible to demodulation processing intermittently received, while maintaining the positioning error when performing intermittent reception to constant precision, to notify a more accurate current location to the user without increasing the power consumption can.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】第1の実施の形態におけるGPS受信装置の構成を示すブロック図である。 1 is a block diagram showing the configuration of a GPS receiver in the first embodiment.

【図2】移動速度と受信間隔との関係を示す特性曲線図である。 2 is a characteristic diagram showing the relationship between the moving speed and the reception interval.

【図3】第2の実施の形態におけるGPS受信装置の構成を示すブロック図である。 3 is a block diagram showing the configuration of a GPS receiver in the second embodiment.

【図4】従来のGPS受信装置の構成を示すブロック図である。 4 is a block diagram showing a configuration of a conventional GPS receiver.

【図5】従来の受信間隔と消費電力との関係を示す特性曲線図である。 5 is a characteristic curve showing the relationship between a conventional reception interval and the power consumption.

【図6】従来の定速移動時における受信間隔と測位誤差との関係を示す特性曲線図である。 6 is a characteristic diagram showing the relationship between the receiving interval and the positioning error in the conventional constant-speed movement.

【符号の説明】 DESCRIPTION OF SYMBOLS

1、11、21……GPS受信装置、2、12……GP 1,11,21 ...... GPS receiving device, 2,12 ...... GP
Sアンテナ、3……GPS受信回路、4……GPS復調回路、5、12……間欠受信制御回路、6……測位回路、13……移動速度検出回路、20……CDMA送受信部、23……CDMA送受信回路、24……CDMA S antenna, 3 ...... GPS receiver circuit, 4 ...... GPS demodulator, 5,12 ...... intermittent reception control circuit, 6 ...... positioning circuit, 13 ...... moving speed detector, 20 ...... CDMA transceiver, 23 ... ... CDMA transmission and reception circuit, 24 ...... CDMA
復調回路、25……CDMA制御回路、26……CDM Demodulation circuit, 25 ...... CDMA control circuit, 26 ...... CDM
A変調回路。 A modulation circuit.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl. 7識別記号 FI テーマコート゛(参考) H04B 7/26 X 9A001 (72)発明者 寺西 孝一郎 東京都品川区北品川6丁目7番35号ソニー 株式会社内 Fターム(参考) 2F029 AA02 AB07 AC02 AC12 5G065 AA01 EA02 FA05 GA07 JA07 KA00 PA01 5H180 AA01 BB05 FF05 FF22 FF33 5J062 BB01 BB02 BB03 CC07 DD14 HH05 5K067 BB32 CC22 EE02 JJ56 9A001 HH34 JJ78 ────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl. 7 identification mark FI theme Court Bu (reference) H04B 7/26 X 9A001 (72) inventor Teranishi Koichiro Shinagawa-ku, Tokyo Kita 6-chome No. 7 No. 35 Sony shares companies in the F-term (reference) 2F029 AA02 AB07 AC02 AC12 5G065 AA01 EA02 FA05 GA07 JA07 KA00 PA01 5H180 AA01 BB05 FF05 FF22 FF33 5J062 BB01 BB02 BB03 CC07 DD14 HH05 5K067 BB32 CC22 EE02 JJ56 9A001 HH34 JJ78

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】移動体の位置を検出する全地球測位システムの受信装置において、 上記全地球測位システムの衛星から送信される衛星信号を間欠受信して復調処理する受信手段と、 上記移動体の移動速度に応じて上記受信手段における上記間欠受信の間欠受信間隔を制御する制御手段とを具えることを特徴とする全地球測位システムの受信装置。 1. A receiver of a global positioning system for detecting the position of a moving body, receiving means for demodulation processing intermittently receives satellite signals transmitted from the satellite of the global positioning system, the mobile receiving apparatus of the global positioning system characterized by comprising a control means for controlling the intermittent reception interval of the intermittent reception in the receiver according to the moving speed.
  2. 【請求項2】上記受信装置は、 上記受信手段による復調結果に基づいて上記移動体の上記移動速度を検出する速度検出手段を具えることを特徴とする請求項1に記載の全地球測位システムの受信装置。 2. A global positioning system according to claim 1, wherein the receiving device, characterized in that it comprises a speed detection means for detecting the moving speed of the moving object on the basis of the demodulation result by said receiving means receiving apparatus of.
  3. 【請求項3】上記受信装置は、 所定の通信システムの基地局から上記移動体の上記位置を示す位置情報を受信する位置情報受信手段と、 上記位置情報受信手段によって受信した上記位置情報に基づいて上記移動体の上記移動速度を検出する速度検出手段を具えることを特徴とする請求項1に記載の全地球測位システムの受信装置。 Wherein said receiving apparatus includes a position information receiving means for receiving position information indicating the position of the mobile from the base station in a predetermined communication system, based on the position information received by the position information receiving means receiving apparatus of the global positioning system according to claim 1, characterized in that it comprises a speed detection means for detecting the moving speed of the moving object Te.
JP2000027352A 2000-01-31 2000-01-31 Receiver for global positioning system Pending JP2001215268A (en)

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Cited By (7)

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WO2006106918A1 (en) * 2005-03-31 2006-10-12 Nec Corporation Mobile radio terminal and its moving speed detection method
JP2008067166A (en) * 2006-09-08 2008-03-21 Nikon Corp Electronic equipment
JP2008511817A (en) * 2004-09-02 2008-04-17 ナリスト ネットワークス ピーティーワイ リミテッド Self-monitoring of gps on mobile devices
JP2010038799A (en) * 2008-08-07 2010-02-18 Casio Comput Co Ltd Positioning apparatus
JP2010101888A (en) * 2008-10-21 2010-05-06 O2 Micro Inc System and method for controlling satellite navigation receiver
JP2012529059A (en) * 2009-06-05 2012-11-15 クゥアルコム・インコーポレイテッドQualcomm Incorporated On-demand positioning
US8791858B2 (en) 2007-02-07 2014-07-29 Nec Corporation Portable terminal device and location result acquisition interval setting method thereof

Cited By (14)

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Publication number Priority date Publication date Assignee Title
JP2008511817A (en) * 2004-09-02 2008-04-17 ナリスト ネットワークス ピーティーワイ リミテッド Self-monitoring of gps on mobile devices
US8326316B2 (en) 2005-03-31 2012-12-04 Nec Corporation Portable wireless terminal and moving velocity detecting method for portable wireless terminal
WO2006106918A1 (en) * 2005-03-31 2006-10-12 Nec Corporation Mobile radio terminal and its moving speed detection method
JP2008067166A (en) * 2006-09-08 2008-03-21 Nikon Corp Electronic equipment
JP5663139B2 (en) * 2007-02-07 2015-02-04 レノボ・イノベーションズ・リミテッド(香港) Portable terminal device and positioning result acquisition interval setting method thereof
US8791858B2 (en) 2007-02-07 2014-07-29 Nec Corporation Portable terminal device and location result acquisition interval setting method thereof
JP2010038799A (en) * 2008-08-07 2010-02-18 Casio Comput Co Ltd Positioning apparatus
JP2010101888A (en) * 2008-10-21 2010-05-06 O2 Micro Inc System and method for controlling satellite navigation receiver
CN103424760A (en) * 2009-06-05 2013-12-04 高通股份有限公司 On demand positioning
JP2014112092A (en) * 2009-06-05 2014-06-19 Qualcomm Incorporated On demand positioning
US8730100B2 (en) 2009-06-05 2014-05-20 Qualcomm Incorporated On demand positioning
JP2012529059A (en) * 2009-06-05 2012-11-15 クゥアルコム・インコーポレイテッドQualcomm Incorporated On-demand positioning
US9274231B2 (en) 2009-06-05 2016-03-01 Qualcomm Incorporated Demand positioning
US10393883B2 (en) 2009-06-05 2019-08-27 Qualcomm Incorporated On demand positioning

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