JPH01300634A - Sector zone control system in mobile communication - Google Patents
Sector zone control system in mobile communicationInfo
- Publication number
- JPH01300634A JPH01300634A JP63130235A JP13023588A JPH01300634A JP H01300634 A JPH01300634 A JP H01300634A JP 63130235 A JP63130235 A JP 63130235A JP 13023588 A JP13023588 A JP 13023588A JP H01300634 A JPH01300634 A JP H01300634A
- Authority
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- Prior art keywords
- sector
- base station
- zone
- sector zone
- antenna
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- 238000010295 mobile communication Methods 0.000 title claims description 9
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 description 10
- 102100036407 Thioredoxin Human genes 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 230000008054 signal transmission Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 2
- 101001045846 Homo sapiens Histone-lysine N-methyltransferase 2A Proteins 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は移動通信におけるセクタゾーン制御方式に関し
、特に、移動局が複数の無線チャネルを切り替えて使用
し、サービスエリアの中心には基地局を設置し、該基地
局に互いに方向の異なる指向性を有するアンテナを設け
てサービスエリアを複数のセクタゾーンに分割し、各セ
クタゾーンには異なる周波数の無線チャネルを割り当て
る移動通信方式において、いずれかのセクタゾーンで通
信中の移動局が他のセクタゾーンに移動した場合には、
該セクタゾーンの無線チャネルに切り替えて通信を継続
するごとく構成されたセクタゾーン制御方式に関するも
のである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a sector zone control method in mobile communications, and in particular, to a sector zone control system in mobile communications, in which a mobile station switches and uses multiple radio channels, and a base station is located at the center of the service area. In a mobile communication system, the service area is divided into a plurality of sector zones by installing antennas with directivity in different directions at the base station, and each sector zone is assigned a radio channel with a different frequency. When a mobile station communicating in a sector zone moves to another sector zone,
The present invention relates to a sector zone control method configured to switch to the wireless channel of the sector zone and continue communication.
（従来の技術）
移動通信においては無線周波数を有効に利用するため一
つの無線ゾーンの大きさを小さくし、離れた無線ゾーン
では同一の周波数を繰り返し使用することが行なわれて
いる。このような小ゾーン化を経済的に行なう方法とし
て、一つの基地局に複数の指向性アンテナを設置して、
各々のアンテナで別々のゾーンを構成するセクタゾーン
方式がある。一方、小ゾーン化を行なうと移動局が基地
局と通話しながら移動しているときに、一つの無線ゾー
ンから他の無線ゾーンに入る機会が多くなる。この場合
、移動局との通話が中断することなく行なわれるために
は、その無線ゾーンへの移り変わり時に通話チャネルの
切替を行なう必要がある。また、この無線ゾーンの切替
が正確に行なわれず、本来の無線ゾーンの外側でチャネ
ルを使用すると通話品質が悪くなったり途中で中断して
しまうだけでなく、繰り返し使用されている同一周波数
のチャネルに対して干渉を与えることになる。(Prior Art) In mobile communications, in order to effectively utilize radio frequencies, the size of one radio zone is reduced, and the same frequency is repeatedly used in separate radio zones. An economical way to create small zones like this is to install multiple directional antennas at one base station.
There is a sector zone method in which each antenna constitutes a separate zone. On the other hand, if the mobile station is divided into smaller zones, there will be more opportunities for the mobile station to enter from one wireless zone to another wireless zone while it is moving while talking to the base station. In this case, in order to be able to communicate with the mobile station without interruption, it is necessary to switch the communication channel when changing to the wireless zone. In addition, if this wireless zone switching is not performed accurately and a channel is used outside the original wireless zone, not only will the quality of the call deteriorate or the call will be interrupted, but also when the same frequency channel is used repeatedly. This will cause interference.
従来技術におけるセクタゾーン構成方法と移動機のセク
タゾーン間移行時の通話中チャネル切替方法を以下に示
す。A sector zone configuration method and a call channel switching method when a mobile device moves between sector zones in the prior art will be described below.
第４図は従来技術に払けるセクタゾーンの構成の一例で
ある。同図のようにサービスエリアは４つのセクタゾー
ン１−４から構成され、中心に位置する基地局１０には
指向性アンテナ１１〜１４が設置されている。第５図は
従来技術における基地局内の指向性アンテナと送受信機
の接続構成の一例を示したもので、指向性アンテナ１１
には共用器３１を介して周波数ｆ１〜ｆ、の送受信機（
ＴＲＸ、〜ＴＲＸ、）が接続され、指向性アンテナ１２
には共用器３２を介して周波数ｆ ｋ＋１〜で１の送受
信機（Ｔ ＲＸ ｂ＝＋ｔ〜ＴＲＸＩ）が接続され、指
向性アンテナ１３には共用器３３を介して周波数ｆ １
＋１〜ｆ、の送受信機（ＴＲＸ＋＋ｘ〜ＴＲＸ、）が接
続され、指向性アンテナ１４には共用器３４を介して周
波数ｆ□、 １％ｗ ｆ ｎの送受信機（ＴＲＸ□、〜
ＴＲＸｎ）が接続されている。又各共用器には監視用受
信機４１〜４４が各々接続されている。FIG. 4 shows an example of a sector zone configuration that can be used in the prior art. As shown in the figure, the service area is composed of four sector zones 1-4, and a base station 10 located at the center is provided with directional antennas 11-14. FIG. 5 shows an example of a connection configuration between a directional antenna in a base station and a transmitter/receiver in the prior art.
is connected to a transmitter/receiver (of frequencies f1 to f) via a duplexer 31.
TRX, ~TRX,) is connected to the directional antenna 12
is connected to one transmitter/receiver (TRX b=+t~TRXI) at a frequency f k+1 ~ through a duplexer 32 , and to the directional antenna 13 through a duplexer 33 at a frequency f 1
+1 to f, transceivers (TRX++
TRXn) is connected. Also, monitoring receivers 41 to 44 are connected to each duplexer.
まず、移動局が第４図の地点Ａ、Ｂ、Ｃを走行する場合
について考える。第６図は移動局送信チャネルの基地局
受信レベルと移動局の走行地点の関係を示したもので第
４図中の地点Ａ、Ｂ、Ｃを走行した場合を表わしている
。基地局１０では移動局１０シで通話が始まると監視用
受信機で移動局の送信チャネルの受信レベルを各アンテ
ナで監視している。移動局１００がチャネルで８を使用
して地点Ａからセクタゾーンの境界地点Ｂを経て地点Ｃ
に走行すると、基地局１０では地点Ｂを過ぎてアンテナ
１１とアンテナ１２の受信レベルの差が切替レベル差Ｈ
よりも大きくなった時点で基地局１０がセクタゾーンを
移行したと判断して、チャネルを例えばｆｂ＋ｔに切替
える。チャネルの切替はアンテナ１１から移動局との間
で送受される制御信号によって行われ、切替レベル差Ｈ
の検出と合わせてゾーン境界のＢ地点から実際に切り替
わるまでには一定の時間が必要となり、移動局の走行速
度によって切替制御に必要な所要路１１ｔＬが決まる０
例えば自動車電話では一般的にレベル測定や制御信号の
やりとりに約１０秒を要し、走行速度を６０ｋｍ／１１
とすると切替制御所要路＠Ｌは１６７ｍになる。第４図
の地点Ａ、Ｂ、Ｃを走行する場合は第６図に示すように
オーバーラツプエリアが広く、アンテナ１１での受信レ
ベルが制御信号伝送の所要レベルを下回らないうちにア
ンテナ１２での受信に切り替わることが分かる。First, consider the case where the mobile station travels through points A, B, and C in FIG. 4. FIG. 6 shows the relationship between the base station reception level of the mobile station transmission channel and the traveling location of the mobile station, and represents the case where the mobile station travels through locations A, B, and C in FIG. When a call starts at the mobile station 10, the base station 10 uses a monitoring receiver to monitor the reception level of the mobile station's transmission channel using each antenna. The mobile station 100 uses channel 8 to move from point A to sector zone boundary point B to point C.
When the base station 10 passes point B, the difference in reception levels between antennas 11 and 12 becomes the switching level difference H.
When the value becomes larger than , the base station 10 determines that the sector zone has changed and switches the channel to, for example, fb+t. Channel switching is performed by control signals transmitted and received between the antenna 11 and the mobile station, and the switching level difference H
It takes a certain amount of time to actually switch from point B on the zone boundary in addition to the detection of
For example, with a car phone, it generally takes about 10 seconds to measure the level and exchange control signals, and the driving speed is 60 km/11 seconds.
Then, the switching control required route @L will be 167 m. When driving at points A, B, and C in Fig. 4, the overlap area is wide as shown in Fig. 6, and antenna 12 is activated before the reception level at antenna 11 falls below the required level for control signal transmission. It can be seen that the reception mode is switched to .
次に、移動局が第４図の地点Ａ’ 、Ｂ’ 、Ｃ’を走
行する場合を考える。第７図は移動局送信チャネルの基
地局受信レベルと移動局の走行地点の関係を示したもの
で第４図中の地点Ａ Ｉ 、 Ｂ ＊。Next, consider the case where the mobile station travels through points A', B', and C' in FIG. FIG. 7 shows the relationship between the base station reception level of the mobile station transmission channel and the traveling location of the mobile station, which is the location A I and B * in FIG. 4.
Ｃ′を走行した場合を表わしている。上記のように基地
局１０では移動局で通話が始まると監視用受信機で移動
局の送信チャネルの受信レベルを各アンテナで監視して
いる。移動局がチャネルでユを使用して地点Ａ゛からセ
クタゾーンの境界地点Ｂ”を経て地点Ｃ゛に走行すると
、基地局では地点Ｂ゛を過ぎてアンテナ１１とアンテナ
１２の受信レベルの差が切替レベル差１（よりも大きく
なった時点で基地局がセクタゾーンを移行したと判断し
てチャネルをｆｈ＋ｘに切り替えようとする。切替制御
には上記と同様に距ｌ１ｌＬを必要とするが、この場合
はオーバーラツプ領域が狭いため、第７図から分かる様
に切替が完了する前にアンテナ１１での制御信号伝送所
要レベルを下回ってしまい、チャネルの切替をすること
ができない。This shows the case where the vehicle travels along C'. As described above, in the base station 10, when a call starts at a mobile station, the monitoring receiver monitors the reception level of the mobile station's transmission channel using each antenna. When the mobile station travels from point A'' to point C'' via the sector zone boundary point B'' using the channel Y, the base station detects the difference in reception level between antennas 11 and 12 after passing point B''. When the switching level difference becomes greater than 1, the base station judges that the sector zone has shifted and attempts to switch the channel to fh+x.Switching control requires the distance l1lL as above, but this In this case, since the overlap region is narrow, as can be seen from FIG. 7, the control signal transmission level at the antenna 11 falls below the required level before the switching is completed, making it impossible to switch channels.
（発明が解決しようとする課題）
以上説明したように、従来技術においてセクタゾーン間
のチャネル切替を行なう場合、基地局周辺のようにセク
タゾーン間のオーバーラツプが少ないところではセクタ
ゾーンの移行に伴うチャネルの切替ができず、通話の継
続ができないという欠点があフた。(Problems to be Solved by the Invention) As explained above, when switching channels between sector zones in the prior art, in areas where there is little overlap between sector zones, such as around a base station, the channel switching due to sector zone transition is difficult. The problem of not being able to switch between the two and continuing the call has been resolved.
従って、本発明の目的は、セクタゾーン間のオーバーラ
ツプが少ない基地局周辺においてもセクタゾーン間のチ
ャネル切替を改善することにある。Therefore, an object of the present invention is to improve channel switching between sector zones even in the vicinity of a base station where there is little overlap between sector zones.
（課題を解決するための手段）
前記目的を達成するための本発明の特徴は、サービスエ
リアの中心に基地局を設置し、該基地局に互いに方間の
異なる指向性を有するアンテナを設けてサービスエリア
を周辺部で相互に重畳する複数のセクタゾーンに分割し
、各セクタゾーンには異なる周波数の無線チャネルが割
り当てられ、いずれかのセクタゾーンで通信中の移動局
が他のセクタゾーンに移動した場合には、移動先セクタ
ゾーンの無線チャネルに切り替えて通信を継続する移動
通信方式におけるセクタゾーン制御方式において、前記
基地局に無指向性のアンテナを設けて前記サービスエリ
アに比べて小さなオムニゾーンを基地局近傍のセクタゾ
ーンの上に重畳し、該無指向性アンテナを各セクタの全
通話チャネルの送受信機に接続する移動通信におけるセ
クタゾーン制御方式にある。(Means for Solving the Problems) A feature of the present invention for achieving the above object is that a base station is installed at the center of a service area, and antennas having different directivity in each direction are provided at the base station. The service area is divided into multiple sector zones that overlap each other in the periphery, each sector zone is assigned a radio channel with a different frequency, and a mobile station communicating in one sector zone moves to another sector zone. In this case, in a sector zone control method in a mobile communication system in which communication is continued by switching to the radio channel of the destination sector zone, the base station is equipped with an omnidirectional antenna to create an omni zone that is smaller than the service area. This is a sector zone control method in mobile communications in which the omnidirectional antenna is superimposed on a sector zone near a base station and the omnidirectional antenna is connected to the transmitter/receiver of all communication channels in each sector.
（作用）
上記構成において、無指向性アンテナによるオムニゾー
ンは基地局近傍の全てのセクタゾーンに重畳し、従って
、基地局または移動局の受信レベルは、各セクタゾーン
における指向性アンテナによるレベルに、無指向性アン
テナによるレベルが重畳されたレベルとなる。従って、
基地局近傍の、セクタゾーンの重畳が小さな領域での指
向性アンテナによるレベルの低下が、無指向性アンテナ
により補われ、当該領域でのチャネル切替を改善するこ
とができる。(Operation) In the above configuration, the omni-zone provided by the non-directional antenna is superimposed on all sector zones near the base station, so that the reception level of the base station or mobile station is equal to the level obtained by the directional antenna in each sector zone. This is a level in which the level due to the omnidirectional antenna is superimposed. Therefore,
The omnidirectional antenna compensates for the level reduction caused by the directional antenna in an area near the base station with small sector zone overlap, making it possible to improve channel switching in that area.
（実施例）
第１図は本発明の実施例であって、セクタゾーンの構成
の一例である。同図のようにサービスエリアは４つのセ
クタゾーン（セクタゾーン１〜セクタゾーン４）と１つ
の小さなオムニゾーン５から構成され、中心に位置する
基地局１０には指向性アンテナ１１〜１４とともに無指
向性のオムニアンテナ１５が設置されている。第２図は
本発明の実施例における基地局内の指向性アンテナ１１
〜１４と送受信機の接続構成の一例を示したもので、指
向性アンテナ１１には共用器３１を介して周波数で１〜
ｆｋの送受信機（ＴＲＸ、〜Ｔ ＲＸ ｋ）が接続され
、指向性アンテナ１２には共用器３２を介して周波数ｆ
ｍや、〜ｆ１の送受信機（Ｔ ＲＸ ｋ＋ｓ〜ＴＲＸ１
）が接続され、指向性アンテナ１３には共用器３３を介
して周波数ｆ １＋１〜で１の送受信機（ＴＲＸ１．１
−ＴＲＸ、）が接続され、指向性アンテナ１４には共用
器３４を介して周波数ｆ ｍｅｔ〜ｆｎの送受信機（Ｔ
ＲＸ□１〜ＴＲＸｎ）が接続されている。又、各共用器
には監視用受信機４１〜４４が各々接続されている。更
に、各アンテナ１１〜１４の入り口から方向性結合器５
１〜５４により分岐を行ない合′成器６０で合成した後
、オムニアンテナ１５に接続し、オムニアンテナ１５へ
の入出力レベルは減衰器６２によって調節可能にしであ
る。減衰器６２の調整はセクタゾーンのオーバーラツプ
領域が切替制御所要距＠Ｌ以下になる基地局周辺部分に
おいて、オムニアンテナ１５による受信レベルが制御信
号伝送所要レベルをわずかに上回るようにする。(Embodiment) FIG. 1 shows an embodiment of the present invention, and is an example of the configuration of a sector zone. As shown in the figure, the service area consists of four sector zones (sector zone 1 to sector zone 4) and one small omni zone 5, and a base station 10 located in the center has directional antennas 11 to 14 as well as non-directional antennas. An omni antenna 15 is installed. FIG. 2 shows a directional antenna 11 in a base station in an embodiment of the present invention.
14 and a transmitter/receiver, the directional antenna 11 is connected to the frequency 1 to 14 via a duplexer 31.
A frequency fk transmitter/receiver (TRX, ~TRXk) is connected to the directional antenna 12 via a duplexer 32.
m, ~f1 transmitter/receiver (T RX k+s~TRX1
) is connected to the directional antenna 13 via a duplexer 33, and one transmitter/receiver (TRX1.1
-TRX, ) is connected to the directional antenna 14 via a duplexer 34 to a transmitter/receiver (T
RX□1 to TRXn) are connected. Furthermore, monitoring receivers 41 to 44 are connected to each duplexer. Furthermore, a directional coupler 5 is connected from the entrance of each antenna 11 to 14.
After branching by 1 to 54 and combining in a combiner 60, the signals are connected to an omni antenna 15, and the input/output level to the omni antenna 15 can be adjusted by an attenuator 62. The attenuator 62 is adjusted so that the reception level by the omni antenna 15 slightly exceeds the required control signal transmission level in the vicinity of the base station where the sector zone overlap region is less than the required switching control distance @L.
移動局が第１図の地点Ａ’、Ｂ’、Ｃ’（第４図と同一
地点）を走行する場合を考える。第３図は移動局送信チ
ャネルの基地局受信レベルと移動局の走行地点の関係を
示したもので第１図中の地点Ａ″、Ｂ’ 、Ｃ”を走行
した場合を表わしている。従来技術の説゛明で述べたよ
うに基地局では移動局で通話が始まると監視用受信機で
移動局め送信チャネルの受信レベルを各アンテナで監視
している。移動局がチャネルで、を使用して地点Ａ″か
らセクタゾーンの境界地点Ｂ′を経て地点Ｃ′に走行す
ると、基地局では地点Ｂ′を過ぎてアンテナ１１とアン
テナ１２の受信１ノベルの差が切替１ノベル差Ｈよりも
大きくなった時点で基地局１０がセクタゾーンを移行し
たと判断してチャネルなｆｙ、＋１に切り替えようとす
る。この際アンテナ１５の受信レベルは監視用受信機４
１および４２で検出されているが１ノベルが低いために
ゾーンの移行の判断には影響しない。切替制御には前述
のように距ｆｉＬを必要とするが、この場合はオーバ・
−ラップ領域が狭いためアンテナ１１での送受信レベル
だけでは制御信号伝送所要ｌノベルを下回ってしまう。Consider the case where the mobile station travels through points A', B', and C' in FIG. 1 (same points as in FIG. 4). FIG. 3 shows the relationship between the base station reception level of the mobile station transmission channel and the location where the mobile station travels, and represents the case where the mobile station travels through locations A'', B', and C'' in FIG. As described in the description of the prior art, when a call begins at a mobile station, the base station uses a monitoring receiver to monitor the reception level of the transmission channel for the mobile station using each antenna. When the mobile station travels from point A'' to point C' via sector zone boundary point B' using the channel, the base station passes point B' and detects the difference in reception of 1 novel between antennas 11 and 12. When becomes larger than the switching 1 novel difference H, the base station 10 determines that the sector zone has shifted and tries to switch to the channel fy, +1.At this time, the reception level of the antenna 15 is
1 and 42, but since 1 novel is low, it does not affect the judgment of zone transition. Switching control requires the distance fiL as mentioned above, but in this case, over-
- Since the wrap area is narrow, the transmission and reception level at the antenna 11 alone is lower than the level required for control signal transmission.
しかし本発明の実施例ではオムニアンテナ１５で合成送
受信することにより常に制御信号伝送所要レベル以」二
の受信レベルが得られ、第３図に示す様にオーバーラツ
プ領域の外でも切替制御が可能である。However, in the embodiment of the present invention, by performing combined transmission and reception using the omni antenna 15, a reception level that is always two times higher than the control signal transmission required level is always obtained, and switching control is possible even outside the overlap region, as shown in FIG. .
（発明の効果）
以上説明したように、本発明に一１′５いてはセクタゾ
ーンを構成する基地局に無指向１′；ミのアンテナを設
けてサービスエリアに比べて小さい基地局を中心とする
オムニゾーンを各セクタゾーンの上に重畳することによ
り、セクタゾーン間のオーバーラツプが少ない基地局周
辺においてもセクタゾ・〜・ン間のチャネル切替を可能
にしている。(Effects of the Invention) As explained above, the present invention has a first feature in which a non-directional antenna is provided at base stations constituting a sector zone, and a base station that is smaller than the service area is centrally located. By superimposing omni-zones on top of each sector zone, it is possible to switch channels between sector zones even in the vicinity of a base station where there is little overlap between sector zones.
第１図は本発明の実施例におけるセクタゾーンの構成例
、第２図は本発明の実施例に４：；けるセクタゾーン基
地局におけるアンテナ及び送受信機の接続構成例、第３
図は本発明の実施例におけるチャネル切替制御におＧＪ
る移動局送信チャネルの基地局受信レベルと移動局走行
地点との関係の例を示す図、第４図は従来のセクタゾー
ンの構成例、第５図は従来のセクタゾーン基地局におけ
るアンテナおよび送受信機の接続構成例、第６図と第７
図は従来のチャネル切替制御における移動局送信チャネ
ルの基地局受信ｌ／ベルど移動局走行地点との関係の例
を示す図である。
１〜４：セクタゾーン ５；オムニゾ・−ン１０；基
地局 １１・へ−１４；指向１′Ｊミアンテナ
１５：無指向性アンテナ
３１−３４；アンテナ共用器
４１〜４４；監視用受信機
５１〜５４；方向性結合器FIG. 1 is an example of the configuration of a sector zone in an embodiment of the present invention, FIG. 2 is an example of a connection configuration of an antenna and transceiver in a sector zone base station according to an embodiment of the present invention,
The figure shows GJ for channel switching control in an embodiment of the present invention.
Figure 4 shows an example of the configuration of a conventional sector zone, and Figure 5 shows an example of the antenna and transmission/reception in a conventional sector zone base station. Examples of machine connection configurations, Figures 6 and 7
The figure is a diagram showing an example of the relationship between a mobile station transmission channel, a base station reception l/belt, and a mobile station travel point in conventional channel switching control. 1 to 4: Sector zone 5; Omnizone 10; Base station 11 to 14; Directional 1'J antenna 15: Omnidirectional antenna 31 to 34; Antenna duplexer 41 to 44; Monitoring receiver 51 to 54; Directional coupler
Claims (1)
いに方向の異なる指向性を有するアンテナを設けてサー
ビスエリアを周辺部で相互に重畳する複数のセクタゾー
ンに分割し、各セクタゾーンには異なる周波数の無線チ
ャネルが割り当てられ、いずれかのセクタゾーンで通信
中の移動局が他のセクタゾーンに移動した場合には、移
動先セクタゾーンの無線チャネルに切り替えて通信を継
続する移動通信方式におけるセクタゾーン制御方式にお
いて、 前記基地局に無指向性のアンテナを設けて前記サービス
エリアに比べて小さなオムニゾーンを基地局近傍のセク
タゾーンの上に重畳し、 該無指向性アンテナを各セクタの全通話チャネルの送受
信機に接続することにより、 基地局近傍の、セクタゾーンの重畳が小さな領域でのチ
ャネル切替を改善することを特徴とする、移動通信にお
けるセクタゾーン制御方式。[Claims] A base station is installed at the center of a service area, and the base station is provided with antennas having different directivity, and the service area is divided into a plurality of sector zones that overlap each other at the periphery. , each sector zone is assigned a wireless channel with a different frequency, and when a mobile station communicating in one sector zone moves to another sector zone, it switches to the wireless channel of the destination sector zone and starts communicating. In a sector zone control method in a continuing mobile communication system, the base station is provided with an omnidirectional antenna, and an omni-zone smaller than the service area is superimposed on a sector zone near the base station, and the omnidirectional antenna is A sector zone control method in mobile communications, which improves channel switching in areas near base stations where sector zone overlap is small by connecting antennas to transmitters and receivers of all communication channels in each sector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63130235A JPH01300634A (en) | 1988-05-30 | 1988-05-30 | Sector zone control system in mobile communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63130235A JPH01300634A (en) | 1988-05-30 | 1988-05-30 | Sector zone control system in mobile communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01300634A true JPH01300634A (en) | 1989-12-05 |
Family
ID=15029346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63130235A Pending JPH01300634A (en) | 1988-05-30 | 1988-05-30 | Sector zone control system in mobile communication |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01300634A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03207844A (en) * | 1990-01-04 | 1991-09-11 | Nippon Steel Corp | Uniformly plating method for high-speed hot dipping |
| JPH0447722A (en) * | 1990-06-15 | 1992-02-17 | Nippon Telegr & Teleph Corp <Ntt> | Radio channel assignment control method in mobile communication |
| JPH07101950B2 (en) * | 1989-12-19 | 1995-11-01 | ノーザン・テレコム・リミテッド | Mobile cellular communication system and method for reducing voice channel interference |
| US5940774A (en) * | 1993-12-21 | 1999-08-17 | Detecon Deutsche Telepost Consulting Gmbh | Cell control system for cellular, digital mobile communication system |
| US6085092A (en) * | 1991-12-16 | 2000-07-04 | Detecon Deutsche Telepost Consulting Gmbh | Method for improving the radio cell illumination in a cellular mobile radio system and apparatus for carrying out the method |
| KR20000046130A (en) * | 1998-12-31 | 2000-07-25 | 김영환 | Device for increasing sector by using switch in cdma system and method for controlling the same |
| US6160800A (en) * | 1995-09-12 | 2000-12-12 | Nec Corporation | TDMA communicating method and TDMA receiving apparatus |
| US6219563B1 (en) | 1995-01-20 | 2001-04-17 | Siemens Aktiengesellschaft | Method for signal transmission in a communication system between a mobile radio transmission/reception device and a stationary radio transmission/reception device |
| US6339703B1 (en) | 1997-06-26 | 2002-01-15 | Nec Corporation | Diversity reception system |
| WO2008066139A1 (en) * | 2006-11-29 | 2008-06-05 | Kyocera Corporation | Mobile communication system, base station device, mobile station device, and mobile communication method |
| WO2008096431A1 (en) * | 2007-02-08 | 2008-08-14 | Fujitsu Limited | Base station device, mobile communication system and cell selecting communication method |
-
1988
- 1988-05-30 JP JP63130235A patent/JPH01300634A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07101950B2 (en) * | 1989-12-19 | 1995-11-01 | ノーザン・テレコム・リミテッド | Mobile cellular communication system and method for reducing voice channel interference |
| JPH03207844A (en) * | 1990-01-04 | 1991-09-11 | Nippon Steel Corp | Uniformly plating method for high-speed hot dipping |
| JPH0447722A (en) * | 1990-06-15 | 1992-02-17 | Nippon Telegr & Teleph Corp <Ntt> | Radio channel assignment control method in mobile communication |
| US6085092A (en) * | 1991-12-16 | 2000-07-04 | Detecon Deutsche Telepost Consulting Gmbh | Method for improving the radio cell illumination in a cellular mobile radio system and apparatus for carrying out the method |
| US5940774A (en) * | 1993-12-21 | 1999-08-17 | Detecon Deutsche Telepost Consulting Gmbh | Cell control system for cellular, digital mobile communication system |
| US6219563B1 (en) | 1995-01-20 | 2001-04-17 | Siemens Aktiengesellschaft | Method for signal transmission in a communication system between a mobile radio transmission/reception device and a stationary radio transmission/reception device |
| US6160800A (en) * | 1995-09-12 | 2000-12-12 | Nec Corporation | TDMA communicating method and TDMA receiving apparatus |
| US6339703B1 (en) | 1997-06-26 | 2002-01-15 | Nec Corporation | Diversity reception system |
| KR20000046130A (en) * | 1998-12-31 | 2000-07-25 | 김영환 | Device for increasing sector by using switch in cdma system and method for controlling the same |
| WO2008066139A1 (en) * | 2006-11-29 | 2008-06-05 | Kyocera Corporation | Mobile communication system, base station device, mobile station device, and mobile communication method |
| KR101030841B1 (en) * | 2006-11-29 | 2011-04-22 | 교세라 가부시키가이샤 | Mobile communication system, base station device, mobile station device, and mobile communication method |
| US8244267B2 (en) | 2006-11-29 | 2012-08-14 | Kyocera Corporation | Communication method and radio communication terminal |
| WO2008096431A1 (en) * | 2007-02-08 | 2008-08-14 | Fujitsu Limited | Base station device, mobile communication system and cell selecting communication method |
| US8452284B2 (en) | 2007-02-08 | 2013-05-28 | Fujitsu Limited | Base station apparatus, mobile communication system and cell selection communication method |
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