JPH0584094B2 - - Google Patents
Info
- Publication number
- JPH0584094B2 JPH0584094B2 JP58159082A JP15908283A JPH0584094B2 JP H0584094 B2 JPH0584094 B2 JP H0584094B2 JP 58159082 A JP58159082 A JP 58159082A JP 15908283 A JP15908283 A JP 15908283A JP H0584094 B2 JPH0584094 B2 JP H0584094B2
- Authority
- JP
- Japan
- Prior art keywords
- time slot
- time
- radio base
- mobile station
- base stations
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 11
- 238000005562 fading Methods 0.000 claims description 10
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 15
- 238000010295 mobile communication Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W99/00—Subject matter not provided for in other groups of this subclass
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
本発明は、自動車電話の如き移動無線における
移動局の待受け時における制御用チヤネルの信号
受信方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a control channel signal reception method when a mobile station, such as a mobile phone, is on standby.
第１図は自動車電話の如き移動通信における無
線ゾーンの構成を示す概念図である。
FIG. 1 is a conceptual diagram showing the configuration of a wireless zone in mobile communication such as a car phone.
すなわち、例えば自動車電話サービスなどのサ
ービスエリアとしての一つの制御ゾーン内に、Ｎ
個の無線基地局Ri（ｉ＝１，２……Ｎ）があり、
各基地局Riに属する小無線ゾーンの集合により前
記制御ゾーンは構成されている。そして各無線基
地局Riは共通の無線制御局１との間をそれぞれ固
定伝送路でつながれている。 That is, within one control zone as a service area, such as a car telephone service, there are N
There are radio base stations R i (i=1, 2...N),
The control zone is constituted by a collection of small wireless zones belonging to each base station R i . Each radio base station R i is connected to a common radio control station 1 by a fixed transmission path.
無線制御局１は図示せざる移動局（自動車）用
交換局を介して一般電話回線網と接続されてい
る。また各無線基地局Riに属する小無線ゾーンの
大きさは、当該ゾーン内にいる移動局の送信電力
によつて該移動局と当該無線基地局との間で充分
に通信が可能となる広さに決められている。 The radio control station 1 is connected to a general telephone network via a mobile station (automobile) switching center (not shown). In addition, the size of the small wireless zone belonging to each wireless base station R i is wide enough to enable communication between the mobile station and the wireless base station based on the transmission power of the mobile station within the zone. It is determined that
第１Ａ図は移動通信における移動局呼出し用の
制御チヤネルの信号構成を１フレーム分だけ示し
た説明図である。 FIG. 1A is an explanatory diagram showing one frame of the signal structure of a control channel for calling a mobile station in mobile communication.
同図において、信号構成はＮ個の無線基地局
R1〜RNが同時に送信するタイムスロツトＳと各
無線基地局が個別に順次送信するＮ個のタイムス
ロツトSi（ｉ＝１，２……Ｎ）をもつて１フレー
ムとし、かかるフレームが連続的に繰り返される
構成となつている。 In the figure, the signal configuration is for N wireless base stations.
One frame includes a time slot S in which R 1 to R N transmit simultaneously and N time slots S i (i = 1, 2...N) in which each radio base station transmits individually and sequentially. It has a structure that repeats continuously.
すなわち、タイムスロツトＳでは、とにかく制
御ゾーン内に移動局がいるかいないかを知るため
に、各無線基地局が仝時に移動局を呼出すもので
あり、移動局から応答があつて当該制御ゾーン内
にることが判れば、続いて各無線基地局が各自の
タイムスロツトで呼出信号を送り、移動局がどの
小無線ゾーン内にいるかを調べ、当該小無線ゾー
ンに属する無線基地局と移動局の間で通信がなさ
れることになる。 That is, in time slot S, each radio base station calls the mobile station from time to time in order to know whether or not there is a mobile station within the control zone. If it is determined that there is Communication will take place.
制御ゾーン内にあつてこのような制御チヤネル
を受信する移動局は、各個別タイムスロツトの受
信レベルを検出し、各タイムスロツトのなかでそ
の受信レベルがある一定値以上で最大のものを見
出すことによつて自移動局がどの無線ゾーンRj
（ｊは１以上Ｎ以下の整数）にいるかを知る。こ
のように個別送信のタイムスロツトのうちで受信
レベル最大のタイムスロツトを知ると、そのスロ
ツトから自移動局がどの無線ゾーンにいるかとい
う情報が得られるから、その他の個別送信スロツ
トを受信することはもはや必要ではない筈であ
る。しかし移動局が受信レベル最大の無線ゾーン
を検知した以後も、従来はなお移動局はその他の
個別送信のタイムスロツトを受信しているのが常
であり、このため呼出用の制御チヤネルを受信し
て待受け状態にいる移動局ではその消費電力が無
駄に使われているという欠点があつた。 A mobile station within the control zone that receives such a control channel detects the reception level of each individual time slot, and finds the maximum reception level in each time slot that is above a certain value. Depending on which radio zone R j the mobile station is in
(j is an integer greater than or equal to 1 and less than or equal to N). In this way, by knowing the time slot with the highest reception level among the individual transmission time slots, information about which radio zone the mobile station is in can be obtained from that slot, so it is difficult to receive data from other individual transmission slots. It should no longer be necessary. However, even after the mobile station detects the radio zone with the highest reception level, conventionally the mobile station is still receiving time slots of other individual transmissions, and therefore cannot receive the control channel for paging. A disadvantage of mobile stations in standby mode is that their power consumption is wasted.
本発明は上述のような従来技術の欠点を除去す
るためになされたものであり、従つて本発明の目
的は、消費電力の無駄を省くことを可能にする移
動通信における移動局の間欠受信方式を提供する
ことにある。
The present invention has been made in order to eliminate the drawbacks of the prior art as described above, and an object of the present invention is to provide an intermittent reception system for a mobile station in mobile communication that makes it possible to eliminate wasteful power consumption. Our goal is to provide the following.
本発明の要点は、移動無線方式において、呼出
用の制御チヤネルを受信して待受け状態にある移
動局が必要なタイムスロツトのみを受信する間欠
受信を行なうようにして消費電力の低減を図つた
点にある。
The main point of the present invention is that in a mobile radio system, power consumption is reduced by performing intermittent reception in which a mobile station in a standby state after receiving a control channel for paging receives only necessary time slots. It is in.
以下、本発明の概要を説明する。先にも説明し
たように、第１Ａ図に示した呼出用の制御チヤネ
ルの信号構成において、Ｎ個の無線基地局が同時
に送信するタイムスロツトＳは制御ゾーン内に移
動局がいるかいないかなどの情報を得るために送
信され、各無線基地局が個別に順次送信するタイ
ムスロツトSiはどの無線ゾーンに移動局がいるか
などの情報を得るために送信されている。 The outline of the present invention will be explained below. As explained earlier, in the signal configuration of the control channel for paging shown in FIG. Time slot S i is transmitted to obtain information, and each radio base station transmits individually and sequentially in order to obtain information such as in which radio zone the mobile station is located.
移動局がこの制御チヤネルを受信し始めると、
移動局は個別送信のＮ個のタイムスロツトSiの各
スロツトの受信レベルの検出を行ない、最大の受
信レベルを示すタイムスロツトを探す。これによ
つて自移動局がどの無線ゾーン内にいるかが分り
その最大受信レベルのタイムスロツトから無線ゾ
ーンに関する情報を得る。最大受信レベルのタイ
ムスロツト検出後は、その移動局にとつて他の
（Ｎ−１）個の個別送信のタイムスロツトの受信
は不要となる。 Once the mobile station starts receiving this control channel,
The mobile station detects the reception level of each of the N time slots S i for individual transmission, and searches for the time slot showing the maximum reception level. By this, it is known which radio zone the mobile station is in, and information regarding the radio zone is obtained from the time slot of the maximum reception level. After the time slot with the maximum reception level is detected, the mobile station does not need to receive the other (N-1) individual transmission time slots.
そこで本発明における第１の実施例では、Ｎ個
の個別送信のタイムスロツトの内から最大の受信
レベルのタイムスロツトを検出した後は、移動局
は、Ｎ個の無線基地局が同時に送信するタイムス
ロツトＳと最大受信レベルを示す個別送信の１つ
のタイムスロツトだけを間欠的に受信するように
したもので、不要な（Ｎ−１）個の個別送信のタ
イムスロツトの間は受信しないのであるから移動
局における一部の電源をその分だけオフにするこ
とができ、これにより移動局の消費電力の低減を
図ることができる。このような間欠受信方式の原
理説明図を第２図に示す。 Therefore, in the first embodiment of the present invention, after detecting the time slot with the highest reception level from among the time slots of N individual transmissions, the mobile station detects the time slots of N individual transmissions simultaneously. This is because only one time slot of the individual transmission indicating the maximum reception level is received intermittently, and no reception is made during the unnecessary (N-1) individual transmission time slots. A portion of the power in the mobile station can be turned off accordingly, thereby reducing the power consumption of the mobile station. A diagram explaining the principle of such an intermittent reception method is shown in FIG.
第２図において、タイムスロツトＳとSjにおい
てのみ電源オンにして信号受信を行なう間欠受信
動作が示されているが、このような間欠受信動作
をしている移動局において、タイムスロツトSjの
受信レベルの劣化が移動局の走行に伴つて（つま
りタイムスロツトSjに属する無線ゾーンから遠去
かるにつれて）発生する。 In Fig. 2, an intermittent reception operation is shown in which the power is turned on only in time slots S and S j to receive signals. Deterioration of the reception level occurs as the mobile station moves (that is, as it moves away from the radio zone belonging to time slot S j ).
タイムスロツトSjの受信レベルがある一定値以
下に低下したとき、次の無線ゾーン（移動に伴つ
て当該移動局が進入した無線ゾーン）を探索する
必要がある。その場合、それまでの間欠受信を停
止して、個別送信の各タイムスロツトの受信レベ
ルを検出し、最大の受信レベルを示すタイムスロ
ツトを探し、その後再び間欠受信動作に戻ること
になる。この様なやり方をすると、間欠受信を停
止して全タイムスロツトの受信を行なうわけであ
るから、それによつて移動局における消費電力が
増えるので好ましくない。 When the reception level of time slot S j falls below a certain value, it is necessary to search for the next wireless zone (the wireless zone into which the mobile station entered as it moved). In that case, the intermittent reception up to that point is stopped, the reception level of each time slot of individual transmission is detected, the time slot showing the maximum reception level is found, and then the intermittent reception operation is resumed again. If this method is used, intermittent reception is stopped and reception is performed in all time slots, which is not preferable because power consumption in the mobile station increases.
そこで本発明の第２の実施例では、移動局が制
御チヤネル受信開始時において個別送信のＮ個の
タイムスロツトの受信レベル検出をして最大受信
レベルを示すタイムスロツトを決める際、各タイ
ムスロツトの受信レベルの大小の順序を記憶して
おく。例えば最大受信レベルをもつタイムスロツ
トはS2、２番目のそれはS4、３番目のそれはS5で
あつたとすると、間欠受信に移行したときには同
時送信のタイムスロツトＳと個別送信のタイムス
ロツトS2だけを受信している。 Therefore, in the second embodiment of the present invention, when the mobile station detects the reception level of N time slots of individual transmission at the start of control channel reception and determines the time slot showing the maximum reception level, it detects the reception level of each time slot. The order of magnitude of reception levels is memorized. For example, if the time slot with the maximum reception level is S 2 , the second one is S 4 , and the third one is S 5 , when switching to intermittent reception, the simultaneous transmission time slot S and the individual transmission time slot S 2 only received.
タイムスロツトS2の受信レベルがある一定値以
下になつたとき、先に記憶した２番目のタイムス
ロツトS4で間欠受信を行ないその受信レベル検出
を行なう。そのタイムスロツトS4の受信レベルが
ある一定値以上であればその間欠受信を続行する
し、ある一定値以下になれば先に記憶した３番目
のタイムスロツトS5によつて間欠受信を行ない、
同様な操作を繰り返す。この様子を第３図に示
す。 When the reception level at time slot S2 falls below a certain value, intermittent reception is performed at the previously stored second time slot S4 and the reception level is detected. If the reception level of the time slot S4 is above a certain value, the intermittent reception is continued, and if it is below the certain value, the intermittent reception is performed using the previously stored third time slot S5 .
Repeat the same operation. This situation is shown in FIG.
この様な方法をとることによつて、間欠受信動
作を続行しながら次の無線ゾーンの決定ができる
ので、移動局の無線ゾーンから無線ゾーンへの移
行時においても移動局における消費電力の増大が
生じることはない。 By adopting such a method, it is possible to determine the next wireless zone while continuing intermittent reception operation, thereby preventing an increase in power consumption in the mobile station even when the mobile station transitions from one wireless zone to another. It will never occur.
また次の無線ゾーンを予め定められた順序によ
つて選択するのでなく実際に探索する場合でも、
それ以前に調べた受信レベルをもとに予測するこ
とができるので、最初の無線ゾーンから１つ１つ
受信レベルを検知していく方法に比べ、平均的に
みれば次の無線ゾーンの探索に要する時間が短く
てすむことになる。 Also, even when actually searching for the next wireless zone instead of selecting it in a predetermined order,
Since it can be predicted based on the reception level checked previously, compared to the method of detecting the reception level one by one from the first wireless zone, on average it will be easier to search for the next wireless zone. The time required will be shorter.
第２図に示した如き間欠受信動作を移動局が行
なつているときには個別送信のタイムスロツトで
はその受信レベルの劣化状況だけをみていればよ
い。そこで本発明による第３の実施例として、受
信レベルのフエージングピツチを調べ、それをパ
ラメータにタイムスロツトSjの受信回数を減らす
ことを提案する。 When a mobile station is performing an intermittent reception operation as shown in FIG. 2, it is only necessary to look at the deterioration of the reception level in the individual transmission time slot. Therefore, as a third embodiment of the present invention, we propose to investigate the fading pitch of the reception level and use it as a parameter to reduce the number of receptions at time slot S j .
フエージングピツチが速いということは移動局
の移動速度が速いということであつて無線ゾーン
を通過する時間も短くなる。従つてこの場合には
タイムスロツトSjでは常にそのレベル劣化の状況
を検出する必要がある。反対にフエージングピツ
チが遅い場合というのは、移動局が携帯電話など
として人間により携行されて遅い速度（歩行速
度）で移動している場合であるので、無線ゾーン
を通過する時間も長く、タイムスロツトSjにおい
てレベルの変化する割合は少ない。従つてタイム
スロツトSjにおいて常時信号を受信する必要はな
く、数回に１回の割合で信号を受信すれば十分で
ある。これによつて第２図に示した間欠受信方式
の場合よりさらに移動局における消費電力の低減
を図ることが可能になる。 A faster fading pitch means that the mobile station moves faster, and the time it takes to pass through the wireless zone is shorter. Therefore, in this case, it is necessary to constantly detect the state of level deterioration in time slot S j . On the other hand, when the fading pitch is slow, it is when the mobile station is carried by a person such as a mobile phone and is moving at a slow speed (walking speed), so the time taken to pass through the wireless zone is long, and the time delay is slow. The rate of change in level in lot S j is small. Therefore, it is not necessary to constantly receive the signal in time slot S j , and it is sufficient to receive the signal once every few times. This makes it possible to further reduce power consumption in the mobile station than in the case of the intermittent reception method shown in FIG.
次に図を参照して本発明の実施例を説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第４図は本発明において用いる移動局の回路構
成を示すブロツク図である。同図において、２は
送受信アンテナ、３は送受共用器、４は受信部、
５は送信部、６はシンセサイザ部、７は制御部、
７１は入出力部、７２はCPU、７３はROM、７
４はRAM、７５はタイマ、である。 FIG. 4 is a block diagram showing the circuit configuration of a mobile station used in the present invention. In the figure, 2 is a transmitting/receiving antenna, 3 is a transmitting/receiving duplexer, 4 is a receiving section,
5 is a transmitting section, 6 is a synthesizer section, 7 is a control section,
71 is the input/output section, 72 is the CPU, 73 is the ROM, 7
4 is a RAM, and 75 is a timer.
第４図において明らかなように、移動局は送信
部５、受信部４、シンセサイザ部６、アンテナ
２、共用器３、制御部７から成り、制御部７は詳
細にはCPU７２、ROM７３、RAM７４、タイ
マ７５、入出力部７１、クロツク発生器７６から
構成される。 As is clear from FIG. 4, the mobile station consists of a transmitter 5, a receiver 4, a synthesizer 6, an antenna 2, a duplexer 3, and a controller 7. It consists of a timer 75, an input/output section 71, and a clock generator 76.
制御部の入出力部７１には実際には多くの信号
線が入出力されるが、本図では本発明の説明に必
要な受信データ、受信レベル、電源オン／オフパ
ルスの信号線のみを記載してある。 Although many signal lines are actually input/output to the input/output section 71 of the control section, only the signal lines for receiving data, receiving level, and power on/off pulse necessary for explaining the present invention are shown in this diagram. There is.
移動局の機能動作はROM７３にストアされる
プログラムによつて決定されるのでその機能動作
のフローチヤートを以下、第５〜７図に示す。 The functional operation of the mobile station is determined by the program stored in the ROM 73, and flowcharts of the functional operation are shown in FIGS. 5 to 7 below.
第５図は本発明の一実施例の動作を示すフロー
チヤートである。第５図のステツプ(ロ)において
は、第２図におけるタイムスロツトSjを最大受信
レベルのスロツトとして検出するものとする。 FIG. 5 is a flowchart showing the operation of one embodiment of the present invention. In step (b) of FIG. 5, time slot S j in FIG. 2 is detected as the slot with the maximum reception level.
第５Ａ図は、第５図における各タイマT1〜T4
と各タイムスロツトとの間の時間関係を示した説
明図である。 FIG. 5A shows each timer T 1 to T 4 in FIG.
FIG. 3 is an explanatory diagram showing the time relationship between the time slot and each time slot.
第５図については、これ以上、説明の必要はな
いであろう。 Regarding FIG. 5, no further explanation is necessary.
第６図は本発明の第２の実施例の動作を示すフ
ローチヤートである。第６Ａ図は、第６図におけ
る各タイマとタイムスロツトとの時間関係を示し
た説明図である。第６図についてもこれ以上説明
の必要はないであろう。 FIG. 6 is a flowchart showing the operation of the second embodiment of the present invention. FIG. 6A is an explanatory diagram showing the time relationship between each timer and time slot in FIG. 6. There is no need for any further explanation regarding FIG.
第７図は本発明の第３の実施例を示すフローチ
ヤートである。第７図における各タイマT1〜T4
と各タイムスロツトとの間の時間関係は第５Ａ図
に示したそれと同じである。 FIG. 7 is a flowchart showing a third embodiment of the present invention. Each timer T 1 to T 4 in FIG. 7
The time relationship between and each time slot is the same as that shown in FIG. 5A.
第７Ａ図は、第７図の動作において必要となる
受信信号のフエージング平均周波数の検出手段の
一例を示す回路図である。第７Ａ図において、８
はレベル比較器、９はカウンタ、である。 FIG. 7A is a circuit diagram showing an example of means for detecting the fading average frequency of the received signal, which is necessary in the operation of FIG. 7. In Figure 7A, 8
is a level comparator, and 9 is a counter.
第７Ａ図において、レベル比較器８は、基準レ
ベルに対する受信レベルの大小関係を判別し、そ
の判別出力をカウンタ９でカウントする。該カウ
ンタ９の一定期間にわたるカウント出力により、
フエージング周波数が表わされるので、これを移
動局の制御部に取り込む。 In FIG. 7A, a level comparator 8 determines the magnitude relationship of the received level with respect to a reference level, and a counter 9 counts the determined output. Due to the count output of the counter 9 over a certain period of time,
Since the fading frequency is displayed, this is taken into the control unit of the mobile station.
第７図についても改めて説明の必要はないであ
ろう。 There is no need to further explain Fig. 7.
以上説明したように、本発明によれば、移動局
における呼出用制御チヤネルの待受け時におい
て、必要な情報が報知されるタイムスロツト部分
だけを受信する間欠受信方式を採用しており、か
つ間欠受信時の個別送信タイムスロツトの受信レ
ベル劣化の場合、次の無線ゾーンの決定に際し、
間欠受信を続行しながら次の無線ゾーンを早急に
見出すことを可能にし、かつ間欠受信時に受信信
号のフエージングピツチを同時に検出し、該フエ
ージングピツチに応じて個別送信タイムスロツト
の受信回数を減らすようにしているので移動局装
置の消費電力を低減できるという利点がある。
As explained above, according to the present invention, when a mobile station is on standby for a paging control channel, an intermittent reception method is adopted in which only the time slot portion in which necessary information is broadcast is received, and the intermittent reception In the case of reception level deterioration in individual transmission time slots, when determining the next wireless zone,
To make it possible to quickly find the next radio zone while continuing intermittent reception, and to simultaneously detect the fading pitch of a received signal during intermittent reception, and to reduce the number of receptions of individual transmission time slots according to the fading pitch. This has the advantage that the power consumption of the mobile station device can be reduced.
第１図は移動通信における無線ゾーンの構成を
示す概念図、第１Ａ図は移動通信における制御チ
ヤネルの信号構成を１フレーム分だけ示した説明
図、第２図、第３図はそれぞれ本発明による間欠
受信方式の原理説明図、第４図は本発明において
用いる移動局の回路構成を示すブロツク図、第５
図は本発明の一実施例の動作を示すフローチヤー
ト、第５Ａ図は第５図における各タイマと各タイ
ムスロツトとの間の時間関係を示した説明図、第
６図は本発明の第２の実施例の動作を示すフロー
チヤート、第６Ａ図は第６図における各タイマと
各タイムスロツトとの間の時間関係を示した説明
図、第７図は本発明の第３の実施例を示すフロー
チヤート、第７Ａ図は第７図の動作において必要
となる受信信号のフエージング平均周波数の検出
手段の一例を示す回路図、である。
符号説明、１……無線制御局、２……アンテ
ナ、３……共用器、４……受信部、５……送信
部、６……シンセサイザ部、７……制御部、７１
……入出力部、７２……CPU、７３……ROM、
７４……RAM、７５……タイマ、７６……クロ
ツク発生器、８……レベル比較器、９……カウン
タ。
FIG. 1 is a conceptual diagram showing the configuration of a wireless zone in mobile communications, FIG. 1A is an explanatory diagram showing the signal configuration of a control channel for one frame in mobile communications, and FIGS. 2 and 3 are each according to the present invention. FIG. 4 is a diagram explaining the principle of the intermittent reception system. FIG. 4 is a block diagram showing the circuit configuration of a mobile station used in the present invention.
5A is a flowchart showing the operation of one embodiment of the present invention, FIG. 5A is an explanatory diagram showing the time relationship between each timer and each time slot in FIG. 5, and FIG. FIG. 6A is an explanatory diagram showing the time relationship between each timer and each time slot in FIG. 6, and FIG. 7 shows a third embodiment of the present invention. FIG. 7A of the flowchart is a circuit diagram showing an example of means for detecting the fading average frequency of the received signal, which is necessary in the operation of FIG. 7. Description of symbols, 1... Radio control station, 2... Antenna, 3... Dual unit, 4... Receiving section, 5... Transmitting section, 6... Synthesizer section, 7... Control section, 71
...Input/output section, 72...CPU, 73...ROM,
74...RAM, 75...timer, 76...clock generator, 8...level comparator, 9...counter.
Claims (1)
るＮ個の無線ゾーンによつて１つの制御ゾーンを
構成し、該制御ゾーン内にいる移動局と無線基地
局との間に呼出し用の制御チヤネルが設定され、
該制御チヤネルの信号は、制御ゾーン内の全ての
無線基地局が同時に一定時間だけ送信を行なうタ
イムスロツトとそれに続いて各無線基地局が一定
時間ずつ個別に順次に送信を行なう連続したＮ個
のタイムスロツトを１フレームとし、該フレーム
が連続して繰り返す形で送信されている場合にお
いて、待受け時にある移動局は全ての無線基地局
が同時に一定時間送信するタイムスロツトと、前
記Ｎ個のタイムスロツトのうち最大受信レベルを
示す特定の個別送信のタイムスロツトだけを間欠
的に受信するようにしたことを特徴とする移動無
線における移動局の間欠受信方式。 ２ Ｎ個（Ｎは１以上の整数）の無線基地局によ
るＮ個の無線ゾーンによつて１つの制御ゾーンを
構成し、該制御ゾーン内にいる移動局と無線基地
局との間に呼出し用の制御チヤネルが設定され、
該制御チヤネルの信号は、制御ゾーン内の全ての
無線基地局が同時に一定時間だけ送信を行なうタ
イムスロツトとそれに続いて各無線基地局が一定
時間ずつ個別に順次に送信を行なう連続したＮ個
のタイムスロツトを１フレームとし、該フレーム
が連続して繰り返す形で送信されている場合にお
いて、待受け時にある移動局は各無線基地局が個
別順次に送信するＮ個のタイムスロツトのそれぞ
れの受信レベルを検出し、各タイムスロツトの受
信レベルの大小関係を順番に記憶し、全ての無線
基地局が同時に一定時間送信するタイムスロツト
と、前記Ｎ個のタイムスロツトのうち最大受信レ
ベルを示す特定の個別送信のタイムスロツトだけ
を間欠的に受信し、間欠的に受信している当該個
別送信のタイムスロツトの受信レベルがある一定
個以下に低下したときは受信を止め、記憶した前
記順番に従つて第２番目の受信レベルにある個別
送信のタイムスロツトに関して間欠受信動作を行
ない、そのタイムスロツトの受信レベルがある一
定値以上であればそのタイムスロツトで間欠受信
動作を続行し、ある一定値以下になつたときは同
じく受信を止め、記憶した前記順番に従つて第３
番目にあるタイムスロツトについて同様な間欠受
信動作を行ない、以下、同様に繰り返すことを特
徴とする移動無線における移動局の間欠受信方
式。 ３ Ｎ個（Ｎは１以上の整数）の無線基地局によ
るＮ個の無線ゾーンによつて１つの制御ゾーンを
構成し、該制御ゾーン内にいる移動局と無線基地
局との間に呼出し用の制御チヤネルが設定され、
該制御チヤネルの信号は、制御ゾーン内の全ての
無線基地局が同時に一定時間だけ送信を行なうタ
イムスロツトとそれに続いて各無線基地局が一定
時間ずつ個別に順次に送信を行なう連続したＮ個
のタイムスロツトを１フレームとし、該フレーム
が連続して繰り返す形で送信されている場合にお
いて、待受け時にある移動局は全ての無線基地局
が同時に一定時間送信するタイムスロツトと、前
記Ｎ個のタイムスロツトのうち最大受信レベルを
示す特定の個別送信のタイムスロツトだけを間欠
的に受信するようにした移動無線における移動局
の間欠受信方式において、受信信号のフエージン
グピツチの検出を行ない、該フエージングピツチ
の値に応じて個別送信のタイムスロツトの受信回
数を増減するようにしたことを特徴とする移動無
線における移動局の間欠受信方式。[Claims] 1 One control zone is composed of N radio zones with N radio base stations (N is an integer of 1 or more), and mobile stations and radio base stations located within the control zone A control channel for calling is set up between
The control channel signal consists of a time slot in which all the radio base stations in the control zone simultaneously transmit for a certain period of time, and then a continuous N time slot in which each radio base station transmits individually and sequentially for a certain period of time. When a time slot is one frame and the frame is transmitted in a continuous repeating manner, a mobile station in standby mode has a time slot in which all radio base stations transmit simultaneously for a certain period of time, and a time slot in which all the radio base stations simultaneously transmit for a certain period of time, and the above N time slots. 1. An intermittent reception method for a mobile station in mobile radio, characterized in that only time slots of specific individual transmissions showing a maximum reception level are intermittently received. 2 One control zone is composed of N radio zones by N radio base stations (N is an integer of 1 or more), and a calling zone is established between mobile stations within the control zone and the radio base station. control channel is configured and
The control channel signal consists of a time slot in which all the radio base stations in the control zone simultaneously transmit for a certain period of time, and then a continuous N time slot in which each radio base station transmits individually and sequentially for a certain period of time. When a time slot is one frame and the frame is transmitted in a continuous repeating manner, a mobile station during standby can check the reception level of each of the N time slots that each radio base station transmits individually and sequentially. The time slots in which all radio base stations simultaneously transmit for a certain period of time, and the specific individual transmission indicating the maximum reception level among the N time slots, are detected and stored in order in the magnitude relationship of the reception levels of each time slot. When the reception level of the time slot of the individual transmission that is being intermittently received drops below a certain level, reception is stopped, and the second Intermittent reception is performed for the time slot of individual transmission at the th reception level, and if the reception level of that time slot is above a certain value, the intermittent reception operation is continued in that time slot, and when the reception level of that time slot becomes below a certain value. At that time, the reception is stopped in the same way, and the third
An intermittent reception method for a mobile station in mobile radio, characterized in that a similar intermittent reception operation is performed for the second time slot, and the same is repeated thereafter. 3 One control zone is composed of N radio zones by N radio base stations (N is an integer greater than or equal to 1), and a calling zone is established between mobile stations within the control zone and the radio base station. control channel is configured and
The control channel signal consists of a time slot in which all the radio base stations in the control zone simultaneously transmit for a certain period of time, and then a continuous N time slot in which each radio base station transmits individually and sequentially for a certain period of time. When a time slot is one frame and the frame is transmitted in a continuous repeating manner, a mobile station in standby mode has a time slot in which all radio base stations transmit simultaneously for a certain period of time, and a time slot in which all the radio base stations simultaneously transmit for a certain period of time, and the above N time slots. In an intermittent reception method for a mobile station in mobile radio, in which only the time slot of a specific individual transmission showing the maximum reception level is intermittently received, the fading pitch of the received signal is detected, and the fading pitch of the received signal is detected. 1. An intermittent reception method for a mobile station in mobile radio, characterized in that the number of timeslots of individual transmissions are received is increased or decreased depending on the value of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58159082A JPS6052133A (en) | 1983-09-01 | 1983-09-01 | Intermittent reception system of mobile station in mobile radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58159082A JPS6052133A (en) | 1983-09-01 | 1983-09-01 | Intermittent reception system of mobile station in mobile radio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6052133A JPS6052133A (en) | 1985-03-25 |
| JPH0584094B2 true JPH0584094B2 (en) | 1993-11-30 |
Family
ID=15685828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58159082A Granted JPS6052133A (en) | 1983-09-01 | 1983-09-01 | Intermittent reception system of mobile station in mobile radio |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6052133A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2604767B2 (en) * | 1987-12-07 | 1997-04-30 | 日本電気株式会社 | Mobile communication system |
| JPH03154437A (en) * | 1989-11-13 | 1991-07-02 | Nippon Telegr & Teleph Corp <Ntt> | Incoming call control system |
| JP2636452B2 (en) * | 1990-01-08 | 1997-07-30 | 日本電気株式会社 | Channel switching method |
| JPH047920A (en) * | 1990-04-26 | 1992-01-13 | Oki Electric Ind Co Ltd | Receiver for mobile communication |
| JPH048021A (en) * | 1990-04-26 | 1992-01-13 | Oki Electric Ind Co Ltd | Intermittent reception system for mobile communication |
| JP3093243B2 (en) * | 1990-07-12 | 2000-10-03 | 株式会社東芝 | Mobile radio communication system |
| JPH0775165A (en) * | 1993-06-29 | 1995-03-17 | Sony Corp | Digital cordless telephone system |
| JP6180217B2 (en) * | 2013-07-24 | 2017-08-16 | 株式会社日立国際電気 | Wireless communication system |
-
1983
- 1983-09-01 JP JP58159082A patent/JPS6052133A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6052133A (en) | 1985-03-25 |
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