JPH0629922A - Mobile communication method and its equipment - Google Patents
Mobile communication method and its equipmentInfo
- Publication number
- JPH0629922A JPH0629922A JP18337792A JP18337792A JPH0629922A JP H0629922 A JPH0629922 A JP H0629922A JP 18337792 A JP18337792 A JP 18337792A JP 18337792 A JP18337792 A JP 18337792A JP H0629922 A JPH0629922 A JP H0629922A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- mobile station
- base station
- carriers
- distance
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、基地局と移動局との間
の移動通信方法およびその装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for mobile communication between a base station and a mobile station.
【０００２】[0002]
【従来の技術】近年、移動通信はその需要が急激に増加
しており、それに応じて周波数の利用効率を大幅に上げ
る必要が生じており、そのためには、送信信号の狭帯域
化や音声信号の圧縮などの方法があるが、それだけでは
需要に追いつけないのが現状である。2. Description of the Related Art In recent years, the demand for mobile communication has been rapidly increasing, and accordingly, it is necessary to significantly increase the frequency utilization efficiency. For this purpose, a narrow band of a transmission signal or a voice signal is required. There are methods such as compression, but the current situation is that it cannot keep up with demand.
【０００３】以下に従来の移動通信装置について説明す
る。図３は従来の移動通信装置の基地局の概略構成を示
すものであり、図４はその動作を説明するためのキャリ
ア配置とスペクトルを示したものである。図３におい
て、１は音声ＣＯＤＥＣ、ＦＡＸなどの送信データ発生
器、２は基地局と移動局の距離を測定する距離測定器、
３はＴＡ信号生成器である。ＴＡ信号生成器３は、基地
局と移動局の距離が長いと、移動局から送信した信号が
基地局で受信されるまでに時間差が生じ、その差を吸収
するため、移動局側の送信タイミングを基地局からの距
離に応じて、基準タイミングから早める必要があり、そ
の量をＴＡ（タイムアドバンス）と呼び、ＴＡを制御信
号に挿入して移動局に送信してその時間差を吸収するよ
うに制御する。４は通信時にチャネルを割り当てるチャ
ネル割当器、５は割り当てたチャネルを移動局に知らせ
るための制御信号を生成するチャネル信号生成器、６は
現在使用しているチャネルを記憶しておくチャネル使用
情報記憶器、７は変復調に用いるキャリアを発生させる
シンセサイザ、８は送信データ、ＴＡ信号およびチャネ
ル信号を送信できる形に構成する送信信号構成器、９は
変調器、１０は送信アンテナである。A conventional mobile communication device will be described below. FIG. 3 shows a schematic configuration of a base station of a conventional mobile communication device, and FIG. 4 shows carrier allocation and spectrum for explaining the operation. In FIG. 3, 1 is a transmission data generator such as a voice CODEC or FAX, 2 is a distance measuring device for measuring the distance between a base station and a mobile station,
3 is a TA signal generator. When the distance between the base station and the mobile station is long, the TA signal generator 3 causes a time difference until the signal transmitted from the mobile station is received by the base station, and absorbs the difference, so that the transmission timing on the mobile station side Needs to be advanced from the reference timing according to the distance from the base station. The amount is called TA (time advance), TA is inserted in the control signal and transmitted to the mobile station to absorb the time difference. Control. 4 is a channel allocator that allocates channels during communication, 5 is a channel signal generator that generates a control signal for notifying the mobile station of the allocated channel, and 6 is channel usage information storage that stores the currently used channel 7 is a synthesizer for generating a carrier used for modulation / demodulation, 8 is a transmission signal composer configured to be able to transmit transmission data, TA signals and channel signals, 9 is a modulator, and 10 is a transmission antenna.
【０００４】以上のように構成された移動通信装置につ
いて、以下その動作について説明する。まず、移動局が
発呼する場合は、移動局から送信された要求信号中に含
まれる同期信号などを用いて基地局の距離測定器２で距
離を測定する。また、基地局から発呼する場合も、最初
に基地局から呼出信号が送信される以外は上記と同様で
ある。The operation of the mobile communication device configured as described above will be described below. First, when the mobile station makes a call, the distance is measured by the distance measuring device 2 of the base station using the synchronization signal included in the request signal transmitted from the mobile station. Also, when making a call from the base station, it is the same as the above except that the calling signal is first transmitted from the base station.
【０００５】次に、基地局のＴＡ信号生成器３では、測
定した距離から移動局が基準タイミングからどれだけ早
く送信を行なえば良いかを計算して移動局を制御するＴ
Ａ信号を生成する。またそれと同時に、チャネル割当器
４でチャネル使用情報記憶器６を参照して空いているチ
ャネルを選び、シンセサイザ７にそのチャネルのキャリ
アを指定する。また、チャネル信号生成器５では、割り
当てたチャネルを移動局に知らせるための制御信号を生
成する。そして、送信信号構成器８では、ＴＡ信号生成
器３からのＴＡ信号とチャネル信号生成器５からの制御
信号とを送信できる形に構成し、変調器９でシンセサイ
ザ７からのキャリアで変調をかけ、送信アンテナ１０か
ら送信する。移動局では、送られてきたＴＡ信号に従っ
て送信タイミングを基準タイミングからずらし、指定さ
れたチャネル（ＦＤＭＡなどの場合はキャリア、ＴＤＭ
Ａなどの場合はキャリアとスロット番号）により送信を
行なう。チャネルがつながったら、送信データ発生器１
からの信号を送信信号構成器８で送信信号に挿入して通
信を行なう。Next, the TA signal generator 3 of the base station calculates T from the measured distance how fast the mobile station should perform transmission from the reference timing and controls the mobile station by T.
Generate the A signal. At the same time, the channel allocator 4 refers to the channel usage information memory 6 to select a vacant channel and designates the carrier of the channel to the synthesizer 7. The channel signal generator 5 also generates a control signal for notifying the mobile station of the assigned channel. Then, the transmission signal composer 8 is configured so that the TA signal from the TA signal generator 3 and the control signal from the channel signal generator 5 can be transmitted, and the modulator 9 modulates with the carrier from the synthesizer 7. , From the transmitting antenna 10. In the mobile station, the transmission timing is shifted from the reference timing according to the transmitted TA signal, and the designated channel (carrier, TDM in the case of FDMA etc.)
In the case of A or the like, transmission is performed by carrier and slot number). Once the channels are connected, send data generator 1
The signal from is inserted into the transmission signal by the transmission signal composer 8 for communication.
【０００６】上記従来の装置に使用されるキャリアは、
図４（ａ）に示すように等しい間隔Ｘでキャリアが配置
されている。この場合、図４（ｂ）、（ｃ）のように、
セルの端付近などのように、隣接波（図中の斜線の部
分）のパワーが大きい場合には、図４（ｃ）のようにキ
ャリア間隔をＸより小さいＹにとると干渉が大きく、所
望の品質が得られないので、図４（ｂ）のように、隣接
波による干渉がないようにキャリア間隔Ｘを定めてあ
る。また、図５のように、セルの中心付近などのよう
に、隣接波のパワーが小さい場合には、干渉が小さいの
で品質を十分に保つことができる。The carrier used in the above conventional apparatus is
Carriers are arranged at equal intervals X as shown in FIG. In this case, as shown in FIGS. 4 (b) and 4 (c),
When the power of adjacent waves (hatched portion in the figure) is large, such as near the edge of a cell, interference is large when the carrier interval is set to Y smaller than X as shown in FIG. Therefore, the carrier interval X is set so that there is no interference due to adjacent waves, as shown in FIG. 4B. Further, as shown in FIG. 5, when the power of the adjacent wave is small, such as near the center of the cell, the interference is small, so that the quality can be sufficiently maintained.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記従
来の移動通信装置では、キャリアの間隔を、セルの端付
近などでも隣接波による干渉を防止できるような広さに
等間隔に配置されているので、移動局がセルの中心付近
にいる場合のように隣接波による干渉の小さい場合で
も、干渉の大きい場合と同じだけキャリア間隔を必要と
するため、周波数に無駄を生じるという問題を有してい
た。However, in the above-mentioned conventional mobile communication device, the carrier intervals are arranged at equal intervals such that interference by adjacent waves can be prevented even near the edge of the cell. However, even if the mobile station is near the center of the cell, even if the interference due to adjacent waves is small, the carrier interval is required as much as when the interference is large, and thus there is a problem that the frequency is wasted. .
【０００８】本発明は、上記従来の問題を解決するもの
であり、周波数の無駄を少なくして、有限の周波数帯域
内に確保できるチャネル数を増やすことができる優れた
移動通信方法およびその装置を提供することを目的とす
る。The present invention solves the above-mentioned conventional problems, and provides an excellent mobile communication method and apparatus capable of reducing the frequency waste and increasing the number of channels that can be secured within a finite frequency band. The purpose is to provide.
【０００９】[0009]
【課題を解決するための手段】本発明は、上記目的を達
成するために、基地局と移動局間の通信に使用する周波
数帯を異なったキャリア間隔に分割し、各キャリア間隔
をそれぞれ異なったチャネルとして使用するようにした
ものである。In order to achieve the above object, the present invention divides a frequency band used for communication between a base station and a mobile station into different carrier intervals, and makes each carrier interval different. It is designed to be used as a channel.
【００１０】本発明はまた、基地局と移動局間の通信に
使用する周波数のキャリア間隔を複数用意して、基地局
と移動局の距離に応じて最適なキャリア間隔を選択する
ようにしたものである。The present invention also provides a plurality of carrier intervals of frequencies used for communication between a base station and a mobile station, and selects an optimum carrier interval according to the distance between the base station and the mobile station. Is.
【００１１】[0011]
【作用】本発明は、上記構成によって、例えば移動局が
セルの中心付近にいる場合は間隔の狭いキャリアに、遠
くにいる場合は間隔の広いキャリアに割り当てることに
よって、限られた帯域内でキャリア間隔を一定にした場
合よりもより多くのチャネルを使用することができる。With the above-described structure, the present invention assigns carriers with narrow intervals when the mobile station is near the center of the cell, and carriers with wide intervals when the mobile station is far away, so that carriers within a limited band can be obtained. More channels can be used than with constant spacing.
【００１２】[0012]
【実施例】以下、本発明の一実施例について図面を参照
しながら説明する。図１は本発明の一実施例における移
動通信装置の基地局の概略構成を示すもので、図２はそ
の動作を説明するためにキャリア配置とスペクトルを示
したものである。図１において、１１は音声ＣＯＤＥ
Ｃ、ＦＡＸなどの送信データ発生器、１２は基地局と移
動局の距離を測定する距離測定器、１３はＴＡ信号生成
器である。１４は通信時にチャネルを割り当てるチャネ
ル割当器、１５は割り当てたチャネルを移動局に知らせ
るための制御信号を生成するチャネル信号生成器、１６
は現在使用しているチャネルを記憶しておくチャネル使
用情報記憶器、１７は変復調に用いるキャリアを発生さ
せるとともに、複数のキャリア間隔が用意されているシ
ンセサイザ、１８は送信データ、ＴＡ信号およびチャネ
ル信号を送信できる形に構成する送信信号構成器、１９
は変調器、２０は送信アンテナ、２１は基地局と移動局
の距離から使用すべきキャリア間隔を選択するキャリア
選択器である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a base station of a mobile communication device according to an embodiment of the present invention, and FIG. 2 shows a carrier arrangement and spectrum for explaining the operation. In FIG. 1, 11 is a voice CODE
A transmission data generator such as C or FAX, 12 is a distance measuring device for measuring the distance between the base station and the mobile station, and 13 is a TA signal generator. Reference numeral 14 is a channel allocator that allocates a channel at the time of communication, 15 is a channel signal generator that generates a control signal for notifying the mobile station of the allocated channel, 16
Is a channel use information memory for storing the channel currently used, 17 is a synthesizer for generating a carrier used for modulation / demodulation, and a plurality of carrier intervals are prepared, 18 is transmission data, TA signal and channel signal , A transmission signal composer configured to be capable of transmitting
Is a modulator, 20 is a transmitting antenna, and 21 is a carrier selector that selects a carrier interval to be used from the distance between the base station and the mobile station.
【００１３】以上のように構成された移動通信装置につ
いて、以下その動作について説明する。まず、移動局が
発呼する場合は、移動局から送信された要求信号中に含
まれる同期信号などを用いて基地局の距離測定器１２で
距離を測定する。また、基地局から発呼する場合も、最
初に基地局から呼出信号が送信される以外は上記と同様
である。The operation of the mobile communication device configured as described above will be described below. First, when the mobile station makes a call, the distance is measured by the distance measuring device 12 of the base station using a synchronization signal included in the request signal transmitted from the mobile station. Also, when making a call from the base station, it is the same as the above except that the calling signal is first transmitted from the base station.
【００１４】次に、基地局のＴＡ信号生成器１３では、
測定した距離から移動局が基準タイミングからどれだけ
早く送信を行なえば良いかを計算して移動局を制御する
ＴＡ信号を生成する。またそれと同時に、キャリア選択
器２１では、測定した距離に応じて、基地局と移動局の
距離が遠い場合にはキャリア間隔が広いキャリアを、近
い場合にはキャリア間隔が狭いキャリアを選択する。チ
ャネル割当器１４では、チャネル使用情報記憶器１６を
参照して、そのキャリア上で空いているチャネルを選
び、シンセサイザ１７にそのチャネルのキャリアを指定
し、またチャネル信号生成器１５では、割り当てたチャ
ネルを移動局に知らせるための制御信号を生成する。そ
して、送信信号構成器１８では、ＴＡ信号生成器１３か
らのＴＡ信号とチャネル信号生成器１５からの制御信号
とを送信できる形に構成し、変調器１９でシンセサイザ
１７からのキャリアで変調をかけ、送信アンテナ２０か
ら送信する。移動局では、送られきたＴＡ信号に従って
送信タイミングを基準タイミングからずらし、指定され
たチャネル（ＦＤＭＡなどの場合はキャリア、ＴＤＭＡ
などの場合はキャリアとスロット番号）により送信を行
なう。チャネルがつながったら、送信データ発生器１１
からの信号を送信信号構成器１８で送信信号に挿入して
通信を行なう。Next, in the TA signal generator 13 of the base station,
From the measured distance, how fast the mobile station should transmit from the reference timing is calculated, and the TA signal for controlling the mobile station is generated. At the same time, the carrier selector 21 selects a carrier having a wide carrier interval when the distance between the base station and the mobile station is long, and selects a carrier having a narrow carrier interval when the distance between the base station and the mobile station is close. The channel allocator 14 refers to the channel usage information memory 16 to select a vacant channel on the carrier, and designates the carrier of the channel to the synthesizer 17, and the channel signal generator 15 allocates the allocated channel. A control signal for informing the mobile station. Then, the transmission signal composer 18 is configured to be able to transmit the TA signal from the TA signal generator 13 and the control signal from the channel signal generator 15, and the modulator 19 modulates with the carrier from the synthesizer 17. , From the transmitting antenna 20. In the mobile station, the transmission timing is shifted from the reference timing according to the transmitted TA signal, and the designated channel (carrier in the case of FDMA, TDMA, etc.)
In such cases, transmission is performed by carrier and slot number). When the channel is connected, send data generator 11
The signal from is inserted into the transmission signal by the transmission signal composer 18 for communication.
【００１５】次に、図２を用いて上記した移動通信装置
の動作についてさらに詳しく説明する。まず、キャリア
を等間隔でなく、図２（ａ）のように、例えば周波数の
低い方は狭い間隔Ｙで、周波数の高い方は広い間隔Ｘで
配置する。移動局が基地局との距離が近いセルの中心付
近にいる場合は、隣接のセルとの距離は遠いために、図
２（ｂ）のように、斜線で示す隣接波のパワーは小さ
く、キャリア間隔が小さいＹで所望の品質が保てる。一
方、移動局が基地局との距離が離れているセルの端付近
にいる場合には、隣接波のパワーが大きいため、図２
（ｃ）のようにキャリア間隔を大きいＸにしないと所望
の品質が得られない。そこで、距離測定器１２の測定結
果がある距離以上であった場合には、広いキャリア間隔
Ｘを選び、それ以下であった場合には、狭いキャリア間
隔Ｙを選ぶ。移動局が移動した場合は、その位置に応じ
て、チャネルの再割当（セル内チャネル切り替え）を随
時行なう。このことにより、全キャリアにおいて所望の
品質を満足させつつ、多くのキャリア（チャネル）を使
用することができる。Next, the operation of the above-mentioned mobile communication device will be described in more detail with reference to FIG. First, instead of arranging the carriers at equal intervals, as shown in FIG. 2A, for example, the one with a lower frequency is arranged with a narrow interval Y, and the one with a higher frequency is arranged with a wider interval X. When the mobile station is near the center of a cell whose distance to the base station is short, the distance to the adjacent cell is large, so that the power of the adjacent wave indicated by the diagonal line is small and the carrier wave is small as shown in FIG. The desired quality can be maintained with Y having a small interval. On the other hand, when the mobile station is near the edge of a cell whose distance from the base station is large, the power of the adjacent wave is large,
The desired quality cannot be obtained unless the carrier spacing is set to a large X as in (c). Therefore, if the measurement result of the distance measuring device 12 is more than a certain distance, a wide carrier interval X is selected, and if it is less than that, a narrow carrier interval Y is selected. When the mobile station moves, channel reallocation (intra-cell channel switching) is performed at any time according to its position. As a result, many carriers (channels) can be used while satisfying the desired quality in all carriers.
【００１６】本実施例による移動通信装置のキャリア数
と従来の移動通信装置のキャリア数の例を（表１）に比
較して示している。An example of the number of carriers of the mobile communication apparatus according to this embodiment and the number of carriers of the conventional mobile communication apparatus is shown in comparison with (Table 1).
【００１７】[0017]
【表１】 [Table 1]
【００１８】この（表１）から明らかなように、本実施
例による移動通信装置は、キャリア数を従来例に比べて
多くとれ、使用できるチャネルを増やせる点で優れた効
果が得られる。なお、上記実施例ではキャリア間隔を大
小２種類としたが、これは何種類でも良い。As is clear from this (Table 1), the mobile communication device according to the present embodiment has a large number of carriers as compared with the conventional example, and has an excellent effect in that the number of usable channels can be increased. In the above embodiment, the carrier intervals are two types, large and small, but any number may be used.
【００１９】以上のように、本実施例によれば、キャリ
ア間隔を一定でなくし、基地局と移動局の距離に応じて
使用するキャリアの間隔を選択するキャリア選択器を設
け、移動局がセルの中心付近にいる場合にはキャリア間
隔の狭いキャリアを、端付近にいる場合にはキャリア間
隔の広いキャリアを割り当てることにより、全キャリア
において所望の品質を保ちつつ、使用可能なキャリア数
を増やすことができる。As described above, according to the present embodiment, the carrier interval is not fixed, and the carrier selector that selects the carrier interval to be used according to the distance between the base station and the mobile station is provided. To increase the number of usable carriers while maintaining desired quality among all carriers, assign carriers with narrow carrier intervals when they are near the center of the carrier and carriers with wide carrier intervals when they are near the edges. You can
【００２０】[0020]
【発明の効果】以上のように、本発明は、基地局と移動
局間の通信に使用する周波数帯を異なったキャリア間隔
に分割し、各キャリア間隔をそれぞれ異なったチャネル
として使用するようにしたので、単一のキャリア間隔に
分割した場合に比べて限られた帯域内でより多くのチャ
ネルを使用することができるという効果を有する。As described above, according to the present invention, the frequency band used for communication between the base station and the mobile station is divided into different carrier intervals, and each carrier interval is used as a different channel. Therefore, there is an effect that more channels can be used within a limited band as compared with the case of dividing into a single carrier interval.
【００２１】本発明はまた、基地局と移動局の距離に応
じて、移動局がセルの中心付近にいる場合にはキャリア
間隔の狭いキャリアを、端付近にいる場合にはキャリア
間隔の広いキャリアを選択するようにしたので、全キャ
リアにおいて所望の品質を保ちつつ、使用可能なキャリ
ア数すなわちチャネル数を増やすことができるという効
果を有する。According to the present invention, depending on the distance between the base station and the mobile station, when the mobile station is near the center of the cell, the carrier having a narrow carrier interval is used. Since this is selected, there is an effect that the number of usable carriers, that is, the number of channels can be increased while maintaining desired quality in all carriers.
【図１】本発明の一実施例における移動通信装置の基地
局の概略構成を示すブロック図FIG. 1 is a block diagram showing a schematic configuration of a base station of a mobile communication device according to an embodiment of the present invention.
【図２】（ａ）同装置におけるキャリア配置図 （ｂ）同装置におけるセルの中心付近のスペクトル図 （ｃ）同装置におけるセルの端付近のスペクトル図FIG. 2A is a carrier layout diagram of the device, and FIG. 2B is a spectrum diagram near the center of the cell in the device, and FIG. 2C is a spectrum diagram near the edge of the cell in the device.
【図３】従来の移動通信装置の基地局の概略構成を示す
ブロック図FIG. 3 is a block diagram showing a schematic configuration of a base station of a conventional mobile communication device.
【図４】（ａ）同装置におけるキャリア配置図 （ｂ）同装置における隣接波のパワーが大きい場合のス
ペクトル図 （ｃ）同装置におけるキャリア間隔を狭めた場合のスペ
クトル図FIG. 4 (a) is a carrier arrangement diagram in the same device. (B) is a spectrum diagram when the power of an adjacent wave in the device is large. (C) is a spectrum diagram in the same device when the carrier interval is narrowed.
【図５】同装置における隣接波のパワーが小さい場合の
スペクトル図FIG. 5 is a spectrum diagram when the power of adjacent waves in the device is small.
１１ 送信データ発生器 １２ 距離測定器 １３ ＴＡ信号生成器 １４ チャネル割当器 １５ チャネル信号生成器 １６ チャネル使用情報記憶器 １７ シンセサイザ １８ 送信信号構成器 １９ 変調器 ２０ 送信アンテナ ２１ キャリア選択器 11 transmission data generator 12 distance measuring device 13 TA signal generator 14 channel allocator 15 channel signal generator 16 channel usage information storage 17 synthesizer 18 transmission signal composer 19 modulator 20 transmission antenna 21 carrier selector
───────────────────────────────────────────────────── フロントページの続き (72)発明者 本間 光一 神奈川県横浜市港北区綱島東四丁目３番１ 号 松下通信工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Honma 4-3-1, Tsunashima-higashi, Kohoku-ku, Yokohama-shi, Kanagawa Matsushita Communication Industrial Co., Ltd.
Claims (3)
数帯を異なったキャリア間隔に分割し、各キャリア間隔
をそれぞれ異なったチャネルとして使用する移動通信方
法。1. A mobile communication method in which a frequency band used for communication between a base station and a mobile station is divided into different carrier intervals, and each carrier interval is used as a different channel.
数のキャリア間隔を順に広げて配置して行き、基地局側
に、回線接続時に移動局と基地局の距離を測定する距離
測定器と、移動局が遠い場合は大きい間隔のキャリア
を、近い場合は小さい間隔のキャリアを割り当てるキャ
リア選択器とを備えた移動通信装置。2. A distance measuring device for measuring a distance between a mobile station and a base station at the time of line connection on the base station side by sequentially arranging and arranging carrier intervals of frequencies used for communication between the base station and the mobile station. And a carrier selector that assigns carriers with large intervals when the mobile station is far, and carriers with small intervals when the mobile station is near.
り常に移動局と基地局の距離を測定し、キャリア選択器
によりその距離に応じたキャリアを選択する請求項２記
載の移動通信装置。3. The mobile communication device according to claim 2, wherein the distance measuring device always measures the distance between the mobile station and the base station, and the carrier selector selects the carrier according to the distance, not only when the line is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18337792A JP2959288B2 (en) | 1992-07-10 | 1992-07-10 | Mobile communication method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18337792A JP2959288B2 (en) | 1992-07-10 | 1992-07-10 | Mobile communication method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0629922A true JPH0629922A (en) | 1994-02-04 |
| JP2959288B2 JP2959288B2 (en) | 1999-10-06 |
Family
ID=16134705
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18337792A Expired - Fee Related JP2959288B2 (en) | 1992-07-10 | 1992-07-10 | Mobile communication method and device |
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| Country | Link |
|---|---|
| JP (1) | JP2959288B2 (en) |
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