JPH04114521A - Mobile communication system - Google Patents
Mobile communication systemInfo
- Publication number
- JPH04114521A JPH04114521A JP23491290A JP23491290A JPH04114521A JP H04114521 A JPH04114521 A JP H04114521A JP 23491290 A JP23491290 A JP 23491290A JP 23491290 A JP23491290 A JP 23491290A JP H04114521 A JPH04114521 A JP H04114521A
- Authority
- JP
- Japan
- Prior art keywords
- control channel
- channel
- transmission power
- communication channel
- frequency
- 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
- 238000010295 mobile communication Methods 0.000 title claims description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 238000004891 communication Methods 0.000 claims abstract description 35
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- 101100522322 Caenorhabditis elegans clr-1 gene Proteins 0.000 description 1
- 101000710899 Homo sapiens Cannabinoid receptor 1 Proteins 0.000 description 1
- 101001116937 Homo sapiens Protocadherin alpha-4 Proteins 0.000 description 1
- 102100024261 Protocadherin alpha-4 Human genes 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ディジタル自動車電話システム等に使用する
移動通信システムに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mobile communication system used in a digital car telephone system or the like.
従来の技術
従来、自動車電話システム等の移動通信システムは、第
３図に示すようにあるゾーンをカバーする基地局１３が
各ゾーン内に設けられ、その基地局１３に対して自動車
や人等の移動体が携帯する移動局１４が無線で送受信す
るように構成されている。BACKGROUND OF THE INVENTION Conventionally, in a mobile communication system such as a car telephone system, a base station 13 covering a certain zone is provided in each zone as shown in FIG. A mobile station 14 carried by a mobile body is configured to transmit and receive wirelessly.
無線チャネルは呼制御等の制御情報の送受信を行う制御
チャネルと、無線回線設定後に音声信号や画像信号等の
データ信号の送受信を行う通信チャネルを有している。The wireless channel includes a control channel for transmitting and receiving control information such as call control, and a communication channel for transmitting and receiving data signals such as audio signals and image signals after the wireless line is set up.
Ｆｌは下り通信チャネルのキャリア周波数であり、Ｐ、
はその送信電力である。Fl is the carrier frequency of the downlink communication channel, P,
is its transmission power.
またｆ、はＦ、と対となる。一定周波数だけ離れた上り
（移動局１４→基地局１３）通信チャネルのキャリア周
波数であり、Ｐ、はその送信電力である。Also, f, is a pair with F. P is the carrier frequency of an uplink (mobile station 14→base station 13) communication channel separated by a certain frequency, and P is its transmission power.
一方、Ｆｃは下り制御チャネルのキャリア周波数であり
、Ｐ。はその送信電力である。またｆｃはＦｃと対とな
る、一定周波数だけ離れた上り制御チャネルのキャリア
周波数であり、囚はその送信電力である。送信電力はＰ
ｔ＝ Ｐｃ、 ｐｔ ＝λに設定されている。基地局
１３から移動局１４への着信（−斉呼出し）および移動
局１４から基地局１３への発信（ランダムアクセス）等
の制御信号は、各々キャリア周波数Ｆｃおよびｆｃを用
いて送受される。On the other hand, Fc is the carrier frequency of the downlink control channel, and P. is its transmission power. Further, fc is the carrier frequency of an uplink control channel that is paired with Fc and is separated by a certain frequency, and fc is its transmission power. Transmission power is P
It is set to t=Pc, pt=λ. Control signals for incoming calls from the base station 13 to the mobile station 14 (-universal paging) and outgoing calls from the mobile station 14 to the base station 13 (random access) are transmitted and received using carrier frequencies Fc and fc, respectively.
移動局１４は基地局１３から通信チャネルを割り当てら
れ、そのチャネル上で音声信号やデータ信号等の情報の
送受を行う。The mobile station 14 is assigned a communication channel from the base station 13, and transmits and receives information such as voice signals and data signals on the channel.
このような移動通信システムは、従来限られた周波数を
有効利用するために、同一周波数を干渉条件から決まる
ある距離だけ離れたところで繰返し使用する構成として
いる。第４図は、従来の移動通信システムのゾーン構成
（周波数繰返し・（ターン）を示している。２３は１つ
のゾーンであり六角形である。各ゾーン２３にはトラヒ
ックに応じて、ある数の制御チャネルおよび通信チャネ
ルが固定的に割り当てられる。（ここでは１つのチャネ
ルが１つのキャリア周波数に対応する５ＣＰＣ−Ｆｌ）
ＭＡ （Ｓｉｎｇｌｅ Ｃｈａｎｎｅ！ Ｐｅｒ Ｃ
ａｒｒｉｅｒ −Ｆｒｅｇｕｅｎｃｙ Ｄｉｖｉｓｉｏ
ｎ Ｍ」１ｔｉｐｌｅ Ａｃｃｅｓｓ）方式としている
。ＴＤＭＡ（Ｔｉｍｅ Ｄｉｖｉｓｉｏｎ Ｍｕｌｔｉ
ｐｌｅ Ａｃｃｅｓｓ）方式の場合にはＴＤＭＡ多重数
をｎとするとＬつのキャリア周波数にｎチャネルが存在
することになる。）各ゾーン２３内に存在する移動局は
、自局の属するゾーンの中心に存在する基地局との間で
、七のゾーンに割り幽てられ制御チャネルの１つで発着
信の呼制御データの送受を行い、同じくそのゾーンに割
り幽でもれた通信チャネルの１つを通・１用チヤネルと
して設定されて音声信号やデータ信号等の情報の送受を
行う。In order to make effective use of conventionally limited frequencies, such mobile communication systems are configured to repeatedly use the same frequency at a certain distance determined by interference conditions. FIG. 4 shows the zone configuration (frequency repetition (turn)) of a conventional mobile communication system. 23 is one zone and is hexagonal. Each zone 23 has a certain number of zones depending on the traffic. A control channel and a communication channel are fixedly allocated. (Here, one channel corresponds to one carrier frequency, 5CPC-Fl)
MA (Single Channel! Per C
arrier-Frequency Divisio
nM"1tiple Access) method. TDMA (Time Division Multi
In the case of the TDMA multiplexing method, n channels exist on L carrier frequencies, where n is the number of TDMA multiplexes. ) A mobile station existing in each zone 23 transmits call control data for outgoing and incoming calls using one of the control channels allocated to the seven zones with the base station located at the center of the zone to which the mobile station belongs. Similarly, one of the communication channels hidden in that zone is set as a 1 channel to transmit and receive information such as voice signals and data signals.
２４は、いくつかのゾーン（第４図では７つ）からなる
クラスタ（周波数操り返しエリア）と呼は゛れる単位で
あり、同一周波数はクラスタ２４内の異なるゾーン２３
で用いられることはない。クラスタ２４当たりのゾーン
数Ｎは周波数繰り返しゾーン数と呼ばれる。この周波数
繰り返しゾーン数Ｎは制御チャネルにおける周波数繰り
返しゾーン数Ｎｃｋよび通信チャネルにおける周波数繰
り返しゾーン数Ｎｔが等しく、すなわちＮｃ＝ Ｎｔ＝
Ｎに設定されている。24 is a unit called a cluster (frequency manipulation area) consisting of several zones (seven in FIG. 4), and the same frequency is transmitted to different zones 23 within the cluster 24.
It is never used in The number N of zones per cluster 24 is called the number of frequency repetition zones. This frequency repetition zone number N is equal to the frequency repetition zone number Nck in the control channel and the frequency repetition zone number Nt in the communication channel, that is, Nc=Nt=
It is set to N.
また、周波数を有効に利用するために、クラスタ２４が
異なれば同一周波数が重複１〜て使用されている。Furthermore, in order to utilize frequencies effectively, the same frequency is used twice in different clusters 24.
送信電力Ｐｔ、 ｐｔ、 Ｐｃ、 ｐｃは大きい程受
信側における搬送電波電力対雑音電力比（ＣＮＲ）が高
くとれ、ディジタル伝送においては小さなビット誤り率
特性を得ることができる。従来においても、送信電力を
、所要ＣＮＲ１ＮＲ１所要ＣＮシマージン伝搬損失テナ
利得等から決定する所要値以上に設定することで、雑音
に対するディジタル伝送の劣化を抑えることができた。The larger the transmission power Pt, pt, Pc, pc, the higher the carrier radio power-to-noise power ratio (CNR) on the receiving side, and the smaller the bit error rate characteristics can be obtained in digital transmission. Conventionally, it has been possible to suppress the deterioration of digital transmission due to noise by setting the transmission power to a value greater than or equal to the required value determined from the required CNR1, NR1, required CN simmering loss, tenor gain, etc.
方、同一周波数を異なる場所で繰り返して用いる移動通
信においては、同一周波数干渉によっても伝送特性が劣
化し、干渉の影響を小さく抑えるためには送信電力をい
くら大きくしてもだめであり、同一周波数を繰り返し使
用するゾーン間距離のゾーン半径に対する割合を大きく
する必要がある。このゾーン間距離とゾーン半径の比は
クラスタ当たりのゾーン数Ｎ（周波数繰り返しゾーン数
）と１対１対応する。On the other hand, in mobile communications where the same frequency is repeatedly used in different locations, transmission characteristics deteriorate due to co-frequency interference, and no matter how high the transmission power is, it is impossible to suppress the influence of interference. It is necessary to increase the ratio of the distance between zones to the radius of the zones that are used repeatedly. The ratio between the inter-zone distance and the zone radius has a one-to-one correspondence with the number of zones N (number of frequency repetition zones) per cluster.
周波数繰り返しゾーン数Ｎは大きい程受信側における搬
送波電力干渉波電力比（ＣＩ Ｒ）が高くとれ、ディジ
タル伝送においては小さなビット誤り率特性を得ること
ができる。従来においても、周波数繰り返しゾーン数Ｎ
を、所要ＣｌＲ１所要ＣＩＲマージン、電波伝搬係数等
から決定する所要値以上に設定することで、干渉に対す
るディジタル伝送の劣化を抑えることができた。The larger the frequency repetition zone number N is, the higher the carrier-to-interference-wave power ratio (CIR) on the receiving side can be, and it is possible to obtain a small bit error rate characteristic in digital transmission. Conventionally, the number of frequency repetition zones N
By setting ClR1 to a value greater than the required value determined from the required CIR margin, radio wave propagation coefficient, etc., it was possible to suppress deterioration of digital transmission due to interference.
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システムにおいては
、所要ピット誤り率特性が異なる制御チャネルと通信チ
ャネルに対して同一の送信電力、すなわちＰｔ＝ Ｐｃ
、 ｐｔ−ｐｃに設定しており、また同一の周波数繰り
返しゾーン数、すなわち制御チャネルと通信チャネルの
区別な（Ｎｔ＝Ｎｃとしているために、所要ピット誤り
率が高い制御チャネル上のデータに対しては、通信チャ
ネルと同程度のＣＮＲおよびＣＩＲでも所要ピット誤り
率が得られるだけの強力な誤り訂正符号（一般には訂正
能力の高い誤り訂正符号は符号化率が低いという欠点が
ある）を付加する必要があり、制御チャネル上で伝送で
きる情報ビットが少なくなってしまうという問題があっ
た。Problems to be Solved by the Invention However, in the above conventional mobile communication system, the same transmission power is used for the control channel and the communication channel, which have different required pit error rate characteristics, that is, Pt=Pc.
, pt-pc, and the number of frequency repetition zones is the same, that is, there is no distinction between the control channel and the communication channel (Nt = Nc), so for data on the control channel with a high required pit error rate. adds an error correction code strong enough to obtain the required pit error rate even with CNR and CIR comparable to those of the communication channel (generally, error correction codes with high correction ability have the disadvantage of a low coding rate). However, there is a problem in that the number of information bits that can be transmitted on the control channel is reduced.
本発明はこのような従来の問題を解決するものであり、
所要ビット誤り率が高い制御チャネルに付加すべき誤り
訂正符号を不要またはあまり強力でない符号ですむよう
にできる優れた移動通信システムを提供することを目的
とするものである。The present invention solves these conventional problems,
It is an object of the present invention to provide an excellent mobile communication system that can eliminate the need for an error correction code to be added to a control channel with a high required bit error rate or a code that is not very strong.
課題を解決するだめの手段
本発明は上記目的を達成するために、請求項１の発明に
おいては制御チャネルの送信電力を通信チャネルの送信
電力よりも大きくしたものである。Means for Solving the Problems In order to achieve the above object, the present invention is such that in the first aspect of the invention, the transmission power of the control channel is made larger than the transmission power of the communication channel.
請求項２の発明においては制御チャネルの周波数繰り返
しゾーン数を通信チャネルの周波数繰り返しゾーン数よ
りも大きくするようにしたものである。In the second aspect of the invention, the number of frequency repetition zones of the control channel is made larger than the number of frequency repetition zones of the communication channel.
作用
したがって本発明によれば、所要ビット誤り率の低い制
御チャネルに対する送信電力および周波数繰り返しゾー
ン数の少くとも一方を通信チャネルのそれらよりも大き
くすることによって、受信側でのＣＮＲおよびＣＩＲを
高くとることができ、制御チャネルの情報ビットにかけ
る誤り訂正符号を不要またはあまり強力でない符号化率
の高い誤り訂正符号ですむようにでき、制御チャネルの
情報ピット数を多くとることができるという効果を有す
る。Therefore, according to the present invention, by making at least one of the transmission power and the number of frequency repetition zones for the control channel with a low required bit error rate larger than those for the communication channel, the CNR and CIR on the receiving side can be increased. This has the effect that the error correction code to be applied to the information bits of the control channel can be unnecessary or a less powerful error correction code with a high coding rate can be used, and the number of information pits of the control channel can be increased.
実施例
第１図は本発明の請求項１、すなわち制御チャネルのＣ
ＮＲを高くとることに対応する部分の構成を示すもので
ある。第１図において１は基地局でありゾーンの中心に
１つ存在する。２は移動局であり、自動車や人などの移
動体の移動に伴い属するゾーンが移行し、送受信を行う
基地局が移行していく。Ｆｔは下り（基地局１→移動局
２）通信チャネルのキャリア周波数であり、Ｐ〔はその
送信電力である。またｆｔはＦｔと対になる、一定周波
数だけ離れた上り（移動局２→基地局１）通信チャネル
のキャリア周波数であり、ｐｔはその送信電力である。Embodiment FIG. 1 shows claim 1 of the present invention, that is, C of the control channel.
This shows the configuration of a portion corresponding to a high NR. In FIG. 1, 1 is a base station, and one base station exists at the center of the zone. 2 is a mobile station, and as mobile objects such as cars and people move, the zone to which it belongs shifts, and the base station that performs transmission and reception shifts. Ft is the carrier frequency of the downlink (base station 1→mobile station 2) communication channel, and P[ is its transmission power. Furthermore, ft is the carrier frequency of an uplink (mobile station 2→base station 1) communication channel that is paired with Ft and is separated by a certain frequency, and pt is its transmission power.
一方、Ｆｃは下り制御チャネルのキャリア周波数であり
、Ｐｃはその送信電力である。またｆｃはＦｃと対とな
る。一定周波数だけ離れた上り制御チャネルのキャリア
周波数であり、囚はその送信電力である。On the other hand, Fc is the carrier frequency of the downlink control channel, and Pc is its transmission power. Further, fc is paired with Fc. It is the carrier frequency of the uplink control channel that is separated by a certain frequency, and the difference is its transmission power.
制御チャネルの送信電力は下り、上りともに通信チャネ
ルの送信電力よりも大きく設定する。すなわちＰｔ（Ｐ
ｃかつｐｔ（λである。The transmission power of the control channel is set to be larger than the transmission power of the communication channel for both downlink and uplink. That is, Pt(P
c and pt(λ.
上記実施例においては、所要ビット誤り率が高い制御チ
ャネルの送信電力を通信チャネルの送信電力よりも太き
（しているので、受信側における制御チャネルのＣＮＲ
を通信チャネルのＣＮＲよりも高くとることができる。In the above embodiment, the transmission power of the control channel with a high required bit error rate is set higher than the transmission power of the communication channel, so that the CNR of the control channel on the receiving side
can be higher than the CNR of the communication channel.
したがって、所要ビツト誤り率が高い制御チャネルに対
しても、その情報にかける誤り訂正符号を不要まだはあ
まり強力でない符号化率の高い誤り訂正符号ですむよう
にでき、制御チャネルの情報ビット数を多くとることが
できるという効果を有する。Therefore, even for a control channel with a high required bit error rate, there is no need to apply an error correction code to that information, and a less powerful error correction code with a high coding rate can be used, allowing a large number of information bits for the control channel. It has the effect of being able to
なお、送信電力の増大は消費電力の増大につながるが、
消費電力の増大を特に抑えたい移動局での制御チャネル
での送信（すなわち上り制御チャネル）は発呼や位置登
録等だけであり、通信チャネルに比べてその回線接続時
間は非常に短く、制御チャネルの送信電力を大きくとる
ことは、移動局の消費電力の増大にはあまり影響がない
。Note that an increase in transmission power leads to an increase in power consumption,
In mobile stations where it is particularly important to suppress increases in power consumption, the only transmissions on the control channel (i.e. uplink control channel) are for calling, location registration, etc., and the line connection time is very short compared to the communication channel. Increasing the transmission power of the mobile station has little effect on increasing the power consumption of the mobile station.
第２図（ａ）（ｂ）は本発明の請求項２、すなわち制御
チャネルのＣＩＲを高くとることに対応する部分の構成
を示すものである。第２図（ａ）において５は通信チャ
ネルの周波数繰り返しパターンであり、クラスタ６にお
ける周波数繰り返しゾーン数Ｎｔは７である。７はゾー
ンである一方第２図（ｂｌにおいて８は制御チャネルの
周波数繰り返しパターンであり、クラスタ９における周
波数繰り返しゾーン数Ｎｃは１２である。すなわち、通
信チャネルの周波数繰り返しゾーン数Ｎｔを制御チャネ
ルの周波数繰り返しゾーン数Ｎｃより小さく設定する。FIGS. 2(a) and 2(b) show the configuration of a portion corresponding to claim 2 of the present invention, that is, increasing the CIR of the control channel. In FIG. 2(a), 5 is the frequency repetition pattern of the communication channel, and the number Nt of frequency repetition zones in cluster 6 is seven. 7 is a zone, while 8 in FIG. Set smaller than the frequency repetition zone number Nc.
なお、同図（ａＨｂ）においてゾーンａ、 ｂ、
ｃの位置は同一ゾーンを示す。In addition, in the same figure (aHb), zones a, b,
The position c indicates the same zone.
このよ５に、通信チャネルの周波数繰り返しゾーン数Ｎ
ｔを制御チャネルの周波数繰り返しゾーン数Ｎｃより小
さく設定すると、受信側における制御チャネルのＣＩＲ
を通信チャネルのＣＩＲより高くとることができる。し
たがって、第１図の場合と同様に制御チャネルに対して
その情報ビットにかける誤り訂正符号を不要まだはあま
り強力でない符号化率の高い誤り訂正符号ですむように
でき、制御チャネルの情報ビット数を多くとることがで
きる。5, the number N of frequency repetition zones of the communication channel
If t is set smaller than the number of frequency repetition zones Nc of the control channel, the CIR of the control channel on the receiving side
can be higher than the CIR of the communication channel. Therefore, as in the case of Fig. 1, there is no need for an error correction code to be applied to the information bits of the control channel, but a less powerful error correction code with a high coding rate can be used, and the number of information bits of the control channel can be increased. You can take it.
発明の効果
本発明は上記実施例より明らかなように、以下に示す効
果を有する。請求項１の発明においては、制御チャネル
の送信電力を通信チャネルの送信電力よりも大きくして
いるので、制御チャネルに対する受信側でのＣＮＲを通
信チャネルに対する受信側でのＣＮＲよりも大きくとれ
、所要ビット誤り率が通信チャネルよりも一般的に高い
制御チャネルに対してかける誤り訂正符号を不要または
あまり強力でない符号化率の高い誤り訂正符号ですむよ
うにでき、制御チャネル上の情報ビット数を多（とるこ
とができる。Effects of the Invention As is clear from the above embodiments, the present invention has the following effects. In the invention of claim 1, since the transmission power of the control channel is made larger than the transmission power of the communication channel, the CNR on the receiving side for the control channel can be made larger than the CNR on the receiving side for the communication channel, and the required It is possible to eliminate the need for error correction codes applied to control channels, where the bit error rate is generally higher than that of communication channels, or to use less powerful error correction codes with high coding rates. be able to.
請求項２の発明では制御チャネルの周波数繰り返しゾー
ン数を通信チャネルの周波数繰り返しゾーン数よりも大
きくしているので、制御チャネルに対する受信側でのＣ
ＩＲを通信チャネルに対する受信側でのＣＩＲよりも大
きくとれ、所要ビット誤り率が通信チャネルよりも一般
的に高い制御チャネルに対してかける誤り訂正符号を不
要またはあまり強力でない符号化率の高い誤り訂正符号
ですむようにでき、制御チャネル上の情報ビット数を多
くとることができる。In the invention of claim 2, since the number of frequency repetition zones of the control channel is made larger than the number of frequency repetition zones of the communication channel, the C on the receiving side for the control channel is
Error correction with a high coding rate that does not require or is not very strong with an error correction code applied to a control channel where the IR can be made larger than the CIR on the receiving side for the communication channel and the required bit error rate is generally higher than that of the communication channel. code, and the number of information bits on the control channel can be increased.
第１図は本発明による移動体通信システムの構成を示す
概略図、第２図（ａ）、 （ｂｌは本発明による移動体
通信システムの周波数繰り返しパターンを示す図、第３
図は従来の移動体通信／ステムの構成を示す概略図、第
４図は従来の移動体通信システムの周波数繰り返しパタ
ーンを示す図である。
１・・・基地局、２・・・移動局、５，８・・・周波数
繰り返しパターン、６，９・・クラスタ、７・・・ゾー
ン。
代理人の氏名 弁理士 小鍜治 明 ほか２名第２図
図
Ｃ
ρＣFIG. 1 is a schematic diagram showing the configuration of a mobile communication system according to the present invention, FIG.
This figure is a schematic diagram showing the configuration of a conventional mobile communication/system, and FIG. 4 is a diagram showing a frequency repetition pattern of the conventional mobile communication system. 1... Base station, 2... Mobile station, 5, 8... Frequency repetition pattern, 6, 9... Cluster, 7... Zone. Name of agent: Patent attorney Akira Okaji and two others Figure 2 Figure C ρC
Claims (2)
チャネルと、データ信号の送受信を行う通信チャネルを
有し、制御チャネル上でのデータ伝送の送信電力を通信
チャネル上でのデータ伝送の送信電力よりも大きく設定
した移動通信システム。(1) As a wireless channel, it has a control channel for transmitting and receiving control information and a communication channel for transmitting and receiving data signals, and the transmission power for data transmission on the control channel is determined by the transmission power for data transmission on the communication channel. A mobile communication system with large settings.
チャネルと、データ信号の送受信を行う通信チャネルを
有し、制御チャネルの周波数繰り返しゾーン数を通信チ
ャネルの周波数繰り返しゾーン数よりも大きく設定した
移動通信システム。(2) Mobile communication that has a control channel that transmits and receives control information as a wireless channel and a communication channel that transmits and receives data signals, and the number of frequency repetition zones of the control channel is set larger than the number of frequency repetition zones of the communication channel. system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2234912A JP2775003B2 (en) | 1990-09-04 | 1990-09-04 | Mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2234912A JP2775003B2 (en) | 1990-09-04 | 1990-09-04 | Mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04114521A true JPH04114521A (en) | 1992-04-15 |
| JP2775003B2 JP2775003B2 (en) | 1998-07-09 |
Family
ID=16978236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2234912A Expired - Fee Related JP2775003B2 (en) | 1990-09-04 | 1990-09-04 | Mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2775003B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009112057A (en) * | 1994-06-24 | 2009-05-21 | Gpne Corp | Paging method and apparatus |
| JP2009118505A (en) * | 2002-10-28 | 2009-05-28 | Siemens Ag | Synchronization method in self-organizing radio communication system, mobile station in self-organizing radio communication system, and radio communication system |
| JP2011103689A (en) * | 1995-06-30 | 2011-05-26 | Interdigital Technology Corp | Code division multiple access (cdma) modem |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863242A (en) * | 1981-10-12 | 1983-04-15 | Nippon Telegr & Teleph Corp <Ntt> | Mobile communication system |
| JPS6295032A (en) * | 1985-10-22 | 1987-05-01 | Matsushita Electric Ind Co Ltd | Signal sending-out method for cordless telephone system |
| JPS63200629A (en) * | 1987-02-17 | 1988-08-18 | Mitsubishi Electric Corp | Composite mobile communication system |
-
1990
- 1990-09-04 JP JP2234912A patent/JP2775003B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863242A (en) * | 1981-10-12 | 1983-04-15 | Nippon Telegr & Teleph Corp <Ntt> | Mobile communication system |
| JPS6295032A (en) * | 1985-10-22 | 1987-05-01 | Matsushita Electric Ind Co Ltd | Signal sending-out method for cordless telephone system |
| JPS63200629A (en) * | 1987-02-17 | 1988-08-18 | Mitsubishi Electric Corp | Composite mobile communication system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009112057A (en) * | 1994-06-24 | 2009-05-21 | Gpne Corp | Paging method and apparatus |
| JP2010011515A (en) * | 1994-06-24 | 2010-01-14 | Gpne Corp | Paging method and apparatus |
| JP4567796B2 (en) * | 1994-06-24 | 2010-10-20 | ジーピーエヌイー コーポレイション | Paging method and apparatus |
| US7962144B2 (en) | 1994-06-24 | 2011-06-14 | Gpne Corp. | Method for network communication allowing for persistent request slots for network nodes as well as separate indentification information to be sent from nodes |
| US8086240B2 (en) | 1994-06-24 | 2011-12-27 | Gpne Corp. | Data communication system using a reserve request and four frequencies to enable transmitting data packets which can include a count value and termination indication information |
| JP2011103689A (en) * | 1995-06-30 | 2011-05-26 | Interdigital Technology Corp | Code division multiple access (cdma) modem |
| JP2013132072A (en) * | 1995-06-30 | 2013-07-04 | Interdigital Technology Corp | Code division multiple access (cdma) modem |
| US8737363B2 (en) | 1995-06-30 | 2014-05-27 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
| JP2014131299A (en) * | 1995-06-30 | 2014-07-10 | Interdigital Technology Corp | Code Division Multiple Access (CDMA) modem |
| JP2015043604A (en) * | 1995-06-30 | 2015-03-05 | インターデイジタル テクノロジー コーポレーション | Code division multiple access (cdma) modem |
| JP2009118505A (en) * | 2002-10-28 | 2009-05-28 | Siemens Ag | Synchronization method in self-organizing radio communication system, mobile station in self-organizing radio communication system, and radio communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2775003B2 (en) | 1998-07-09 |
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