JPH1141655A - Interference system control system for cellular mobile communication - Google Patents
Interference system control system for cellular mobile communicationInfo
- Publication number
- JPH1141655A JPH1141655A JP9197525A JP19752597A JPH1141655A JP H1141655 A JPH1141655 A JP H1141655A JP 9197525 A JP9197525 A JP 9197525A JP 19752597 A JP19752597 A JP 19752597A JP H1141655 A JPH1141655 A JP H1141655A
- Authority
- JP
- Japan
- Prior art keywords
- band
- interference
- communication
- influence
- frequency band
- 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
- 230000001413 cellular effect Effects 0.000 title claims description 10
- 238000010295 mobile communication Methods 0.000 title claims description 10
- 238000004891 communication Methods 0.000 claims abstract description 95
- 230000006866 deterioration Effects 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- Mobile Radio Communication Systems (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、携帯電話、自動車
電話および簡易型携帯電話等のセルラ移動通信システム
において他の通信システムからの干渉の影響を回避しう
るセルラ移動通信における対干渉システム制御方式に関
し、更に詳しくは、複数の異なる周波数帯域を使用して
無線ゾーンを形成するセルラ移動通信システムにおいて
接続品質および通信品質に与える干渉の影響を回避して
無線回線接続を行うセルラ移動通信における対干渉シス
テム制御方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-interference system control method in cellular mobile communication, which can avoid the influence of interference from other communication systems in a cellular mobile communication system such as a mobile phone, a car phone and a simplified mobile phone. More specifically, in a cellular mobile communication system in which a radio zone is formed using a plurality of different frequency bands, interference in cellular mobile communication in which a radio link is connected while avoiding the influence of connection quality and interference on communication quality It relates to a system control method.
【0002】[0002]
【従来の技術】複数の異なる周波数帯域を使用して無線
ゾーンを形成するセルラ移動通信システムにおいて、他
の通信システムからの干渉を基地局もしくは移動局受信
側で使用帯域内の広範囲のチャネルで同時に受けるよう
な1つもしくは複数の周波数帯域が存在する場合におい
て、他システムの移動局送信側からの干渉を移動局受信
側で受ける使用周波数帯域の分布例を図8に示すように
自システムの移動局の受信帯域をA1〜An帯域(以
下、A帯域と称す)およびB1〜Bn帯域(以下、B帯
域と称す)とし、使用帯域が近傍に存在する他の通信シ
ステムの移動局の送信帯域をC帯域とすると、C帯域で
の移動局送信信号のスペクトラムが図8に示すようにB
帯域の移動局受信に漏れ込む場合、B帯域移動局受信チ
ャネルでは信号対雑音比の劣化が発生する。2. Description of the Related Art In a cellular mobile communication system in which a radio zone is formed by using a plurality of different frequency bands, interference from another communication system is simultaneously caused by a base station or a mobile station receiving side over a wide range of channels within the used band. In the case where one or a plurality of frequency bands exist, as shown in FIG. 8, the distribution example of the used frequency band in which the mobile station receiving side receives interference from the mobile station transmitting side of another system as shown in FIG. The reception bands of the stations are referred to as A1 to An band (hereinafter, referred to as A band) and B1 to Bn bands (hereinafter, referred to as B band), and the transmission band of the mobile station of another communication system whose use band exists in the vicinity is shown. Assuming the C band, the spectrum of the mobile station transmission signal in the C band is B as shown in FIG.
When the band leaks into the mobile station reception, the signal-to-noise ratio deteriorates in the B-band mobile station reception channel.
【0003】このような状況では、B帯域のどの通信チ
ャネルを使用しても信号対雑音比が劣化しているため、
接続品質および通信品質が低下することになる。但し、
B帯域全体で干渉を受けている状況でも、無線ゾーン中
心部等では、移動局受信レベルが高いことから、信号対
雑音比の劣化が接続品質および通信品質に与える影響は
少なくて済む。しかしながら、無線ゾーン周辺部等で
は、移動局受信レベルが低いことから、信号対雑音比の
劣化が接続品質および通信品質に与える影響が大きくな
り、発着信接続時においては接続品質が低下し、通信中
においては通信品質の劣化が顕著に現れることになる。In such a situation, the signal-to-noise ratio is deteriorated regardless of which communication channel in the B band is used.
Connection quality and communication quality will be reduced. However,
Even in a situation where the entire B-band is subject to interference, since the mobile station reception level is high in the center of the wireless zone or the like, the influence of the deterioration of the signal-to-noise ratio on the connection quality and communication quality can be reduced. However, since the reception level of the mobile station is low in the vicinity of the radio zone, the influence of the deterioration of the signal-to-noise ratio on the connection quality and the communication quality becomes large. Inside, the deterioration of the communication quality appears remarkably.
【0004】以上のことは、図9〜図11に示す周波数
帯域の分布例の場合においても同様である。図9は他シ
ステムの移動局送信側からの干渉を自システムの基地局
受信側で受ける使用周波数帯域の分布例であり、他シス
テムの移動局の送信が自システムの移動局から基地局へ
の上り回線に干渉する場合である。また、図10は他シ
ステムの基地局送信側からの干渉を自システムの基地局
受信側で受ける使用周波数帯域の分布例であり、他シス
テムの基地局の送信が自システムの移動局から基地局へ
の上り回線に干渉する場合である。更に、図11は他シ
ステムの基地局送信側からの干渉を自システムの移動局
受信側で受ける使用周波数帯域の分布例であり、他シス
テムの基地局の送信が自システムの基地局から移動局へ
の下り回線に干渉する場合である。The same applies to the frequency band distribution examples shown in FIGS. 9 to 11. FIG. 9 is a distribution example of a used frequency band in which interference from the mobile station transmitting side of another system is received by the base station receiving side of the own system, and transmission of the mobile station of the other system is performed from the mobile station of the own system to the base station. This is the case where interference occurs in the uplink. FIG. 10 is an example of a distribution of frequency bands in use in which interference from a base station transmitting side of another system is received by a base station receiving side of the own system. This is the case where the signal interferes with the uplink to the network. Further, FIG. 11 is an example of a distribution of the used frequency band in which the interference from the base station transmitting side of the other system is received by the mobile station receiving side of the own system, and the transmission of the base station of the other system is performed from the base station of the own system to the mobile station. This is the case where it interferes with the down link to.
【0005】従来のシステム制御方式では、干渉の影響
を受ける度合いに関係なくA帯域、B帯域を使いうるよ
うになっており、干渉の影響を受ける度合いにより、使
用周波数帯域(A帯域、B帯域)または使用通信チャネ
ルを使い分けることは行われていない。In the conventional system control system, the A band and the B band can be used regardless of the degree of the influence of the interference. ) Or the communication channel used is not properly used.
【0006】[0006]
【発明が解決しようとする課題】従来のシステム制御方
式では、他の通信システムからの干渉を基地局もしくは
移動局受信側で使用帯域内の広範囲のチャネルで同時に
受けるような1つもしくは複数の周波数帯域が存在し、
周波数帯域全体で干渉を受けている状況では、通信チャ
ネルとして前記周波数帯域を使用しようとした場合およ
び使用している場合に、干渉の影響を受け、接続品質お
よび通信品質が劣化することがあった。特に、無線ゾー
ン周辺部においては、信号対雑音比の劣化の度合いが無
線ゾーン中心部に比べて大きくなるため、接続品質およ
び通信品質の劣化が顕著に現れる。In the conventional system control system, one or a plurality of frequency bands in which interference from another communication system is simultaneously received by a base station or a mobile station on a wide range of channels within a used band. Band exists,
In a situation where interference is received in the entire frequency band, when the frequency band is used as a communication channel and when the frequency band is used, the communication quality is deteriorated due to the influence of the interference. . In particular, since the degree of deterioration of the signal-to-noise ratio is greater at the periphery of the wireless zone than at the center of the wireless zone, the connection quality and communication quality are significantly reduced.
【0007】本発明は、上記に鑑みてなされたもので、
その目的とするところは、セルラ移動通信システムにお
いて他の通信システムからの干渉を基地局または移動局
受信側が使用帯域内の広範囲のチャネルで同時に受ける
ような1つまたは複数の周波数帯域が存在する場合に接
続品質および通信品質に与える影響を回避するセルラ移
動通信における対干渉システム制御方式を提供すること
にある。[0007] The present invention has been made in view of the above,
The purpose is to provide a cellular mobile communication system in which one or more frequency bands exist in which a base station or a mobile station receiving side simultaneously receives interference from another communication system over a wide range of channels within the used band. Another object of the present invention is to provide an anti-interference system control method in cellular mobile communication that avoids the influence on connection quality and communication quality.
【0008】[0008]
【課題を解決するための手段】上記目的を達成するた
め、請求項1記載の本発明は、複数の異なる周波数帯域
を使用して無線ゾーンを形成するセルラ移動通信におい
て他の通信システムからの干渉を基地局または移動局受
信側で使用帯域内の広範囲のチャネルで同時に受けるよ
うな1つまたは複数の周波数帯域が存在する場合、無線
ゾーンの中心部ほど、他の通信システムからの干渉の影
響の大きい周波数帯域の通信チャネルを使用して通信を
行い、無線ゾーンの周辺部ほど、他の通信システムから
の干渉の影響の小さい周波数帯域または干渉の影響の全
くない周波数帯域の通信チャネルを使用して通信を行う
ことを要旨とする。In order to achieve the above object, according to the present invention, in a cellular mobile communication forming a radio zone using a plurality of different frequency bands, interference from another communication system is provided. If there is one or more frequency bands in which the base station or mobile station receiving side simultaneously receives over a wide range of channels within the used band, the center of the wireless zone is more affected by the influence of interference from other communication systems. Communication is performed using a communication channel of a large frequency band, and using a communication channel of a frequency band that is less affected by interference from other communication systems or a frequency band that is completely free of interference, the closer to the periphery of the wireless zone. The point is to perform communication.
【0009】請求項1記載の本発明にあっては、無線ゾ
ーンの中心部ほど、他の通信システムからの干渉の影響
の大きい周波数帯域の通信チャネルを使用して通信を行
い、無線ゾーンの周辺部ほど、他の通信システムからの
干渉の影響の小さい周波数帯域または干渉の影響の全く
ない周波数帯域の通信チャネルを使用して通信を行う。According to the first aspect of the present invention, communication is performed using a communication channel in a frequency band that is more affected by interference from another communication system toward the center of the wireless zone, and the periphery of the wireless zone is controlled. The part performs communication using a communication channel in a frequency band with little influence of interference from another communication system or a frequency band without any influence of interference.
【0010】また、請求項2記載の本発明は、請求項1
記載の発明において、前記他の通信システムからの干渉
を基地局または移動局受信側で使用帯域内の広範囲のチ
ャネルで同時に受けるような周波数帯域を複数の通信チ
ャネル群に分割し、他の通信システムからの干渉の影響
の大きい通信チャネルほど、無線ゾーンの中心部で使用
することを要旨とする。The present invention described in claim 2 is the same as the claim 1.
In the described invention, a frequency band in which interference from the other communication system is simultaneously received by a base station or a mobile station on a wide range of channels within a used band is divided into a plurality of communication channel groups, The gist is that a communication channel that is more affected by interference from a wireless zone is used in the center of the wireless zone.
【0011】請求項2記載の本発明にあっては、他の通
信システムからの干渉を受ける周波数帯域を複数の通信
チャネル群に分割し、他の通信システムからの干渉の影
響の大きい通信チャネルほど、無線ゾーンの中心部で使
用する。According to the second aspect of the present invention, a frequency band that is subject to interference from another communication system is divided into a plurality of communication channel groups, and a communication channel that is more affected by interference from another communication system has a greater influence. Used in the center of the wireless zone.
【0012】[0012]
【発明の実施の形態】以下、図面を用いて本発明の実施
の形態について説明する。Embodiments of the present invention will be described below with reference to the drawings.
【0013】図1は、図8に示した周波数帯域の分布例
において他の通信システムからの干渉の影響の度合いの
一例を示す図である。同図に示すように、B1帯域、B
2帯域、・・・Bn帯域(他の通信システムからの干渉
を移動局受信側で使用帯域内の広範囲のチャネルで同時
に受けるるような周波数帯域)の順で干渉の影響の度合
いが小さくなっている。FIG. 1 is a diagram showing an example of the degree of influence of interference from another communication system in the example of frequency band distribution shown in FIG. As shown in FIG.
The influence of the interference decreases in the order of two bands,..., Bn band (a frequency band in which interference from another communication system is simultaneously received on a wide range of channels in the use band on the receiving side of the mobile station). I have.
【0014】図2は、A帯域(他の通信システムからの
干渉の影響を受けない周波数帯域)と上述したB1帯
域、B2帯域、・・・Bn帯域の通信チャネルを使い分
ける条件を示したものである。すなわち、移動局の受信
レベルによって通信チャネルを使い分けるようにシステ
ム制御を行うものである。図2において、移動局におけ
る受信レベルLが大きい場合、すなわち受信レベルLが
LB1よりも大きい場合には、通信チャネルとしてB1
帯域を使用し、受信レベルLがLB1とLB2との間で
はB2帯域を使用し、以下同様にして、受信レベルLが
LBnよりも小さい場合には、A帯域を使用するように
制御するものである。FIG. 2 shows conditions for selectively using communication channels of band A (frequency band not affected by interference from other communication systems) and the above-described band B1, band B2,... Bn. is there. That is, the system control is performed so that the communication channel is properly used depending on the reception level of the mobile station. In FIG. 2, when the reception level L at the mobile station is high, that is, when the reception level L is higher than LB1, the communication channel B1
When the reception level L is lower than LBn, control is performed so that the A band is used when the reception level L is smaller than LBn. is there.
【0015】このように通信チャネルを受信レベルに応
じて使い分けるように制御することにより、無線ゾーン
の中心部ほど、干渉の影響の大きい通信チャネルを使用
し、無線ゾーンの周辺部ほど、干渉の影響の小さい通信
チャネルを使用することができる。By controlling the communication channels so as to be selectively used in accordance with the reception level, a communication channel having a greater influence of interference is used in the center of the wireless zone, and the influence of the interference is increased in a peripheral portion of the wireless zone. Communication channel can be used.
【0016】図3〜図5を参照して、具体的なシステム
制御例について説明する。図3は、発信接続時の例を示
しており、移動局からの発信要求信号により網(NW)
に報告される自ゾーンレベルLにより無線ゾーン内に割
り当てられているどの周波数帯域、すなわちA帯域、B
1帯域、B2帯域、・・・Bn帯域のどれを使用するか
を判断する。L≧LB1の場合には、B1帯域内の通信
チャネルを割り当て、LB1>L≧LB2の場合には、
B2帯域内の通信チャネルを割り当て、LB(n−1)
>L≧LBnの場合には、Bn帯域内の通信チャネルを
割り当て、L<LBnの場合には、A帯域内の通信チャ
ネルを割り当てる。A specific system control example will be described with reference to FIGS. FIG. 3 shows an example at the time of outgoing connection, in which a network (NW) is transmitted by an outgoing request signal from a mobile station.
Which frequency band is assigned in the wireless zone by the own zone level L reported to
It is determined which one of the 1 band, B2 band,... Bn band is used. When L ≧ LB1, a communication channel within the B1 band is allocated, and when LB1> L ≧ LB2,
Allocate a communication channel in the B2 band, LB (n-1)
If> L ≧ LBn, a communication channel in the Bn band is allocated, and if L <LBn, a communication channel in the A band is allocated.
【0017】図4は、着信接続時の例を示しており、網
(NW)からの呼出信号で移動局に着信があり、これに
対して移動局が着信応答信号で網(NW)に応答する自
ゾーンレベルLにより無線ゾーン内に割り当てられてい
るどの周波数帯域を使用するかを判断する。L≧LB1
の場合には、B1帯域内の通信チャネルを割り当て、L
B1>L≧LB2の場合には、B2帯域内の通信チャネ
ルを割り当て、LB(n−1)>L≧LBnの場合に
は、Bn帯域内の通信チャネルを割り当て、L<LBn
の場合には、A帯域内の通信チャネルを割り当てる。FIG. 4 shows an example of an incoming call connection, in which a mobile station receives a call with a call signal from the network (NW), and the mobile station responds to the network (NW) with a call response signal. It determines which frequency band allocated in the wireless zone to use based on the own zone level L. L ≧ LB1
, A communication channel within the B1 band is allocated, and L
When B1> L ≧ LB2, a communication channel in the B2 band is allocated, and when LB (n−1)> L ≧ LBn, a communication channel in the Bn band is allocated, and L <LBn
In the case of (1), a communication channel within the band A is allocated.
【0018】また、図5は、移動局と網(NW)とが通
信中において1無線ゾーン内におけるチャネル切替の例
を示しており、移動局から網(NW)に対して一定時間
間隔で報告される定期無線状態報告信号を常時監視し、
該信号のレベルLとして通信中にL≧LB1が検出され
た場合には、B1帯域内の通信チャネルへチャネルを切
り替え、LB1>L≧LB2が検出された場合には、B
2帯域内の通信チャネルへチャネルを切り替え、LB
(n−1)>L≧LBnが検出された場合には、Bn帯
域内の通信チャネルへチャネルを切り替え、L<LBn
が検出された場合には、A帯域内の通信チャネルへチャ
ネルを切り替えるものである。FIG. 5 shows an example of channel switching within one radio zone during communication between the mobile station and the network (NW). The mobile station reports to the network (NW) at regular time intervals. Constantly monitor the periodic radio status report signal
If L ≧ LB1 is detected during communication as the level L of the signal, the channel is switched to a communication channel within the B1 band, and if LB1> L ≧ LB2 is detected, B
Switching the channel to a communication channel within two bands, LB
If (n-1)> L ≧ LBn is detected, the channel is switched to a communication channel in the Bn band, and L <LBn
Is detected, the channel is switched to a communication channel in the A band.
【0019】また、B1,B2,・・・,Bn帯域の個
々の帯域内でもC帯域(使用帯域が近傍に存在する他の
通信チャネルの移動局もしくは基地局の送信帯域)によ
る干渉の影響の度合いが異なる。図6は、B1帯域内の
チャネル群分割の例であるが、B1帯域内でもC帯域に
近いB11チャネル群はC帯域による干渉の影響の度合
いが大きく、B12チャネル群はC帯域による干渉の影
響を受けるものの、その度合いはB11チャネル群より
は小さい。従って、B1帯域内の通信チャネルを更にチ
ャネル群に分割して使用することで、B1帯域内の周波
数を有効利用することができる。Also, in each of the B1, B2,..., Bn bands, the influence of the interference by the C band (the transmission band of the mobile station or the base station of another communication channel whose usage band is in the vicinity) exists. Different degrees. FIG. 6 shows an example of channel group division in the B1 band. Even in the B1 band, the B11 channel group close to the C band is greatly affected by the interference of the C band, and the B12 channel group is affected by the interference of the C band. , But to a lesser extent than the B11 channel group. Therefore, the frequency in the B1 band can be used effectively by further dividing the communication channels in the B1 band into channel groups.
【0020】図7は、B1帯域をチャネル群分割した場
合の各チャネル群の使用条件である。移動局受信レベル
LがL≧LB11の時、B11チャネル群を使用し、L
B11>L≧LB12の時、B12チャネル群を使用
し、LB1(n−1)>L≧LB1nの時、B1nチャ
ネル群を使用し、L<LB1nの時、A帯域チャネルを
使用する。B2,B3,・・・,Bn帯域についても同
様である。また、具体的なシステム制御例は図3〜図5
と同様である。FIG. 7 shows the use conditions of each channel group when the B1 band is divided into channel groups. When the mobile station reception level L is L ≧ LB11, the B11 channel group is used and L
When B11> L ≧ LB12, the B12 channel group is used. When LB1 (n−1)> L ≧ LB1n, the B1n channel group is used. When L <LB1n, the A band channel is used. The same applies to the B2, B3,..., Bn bands. FIGS. 3 to 5 show specific examples of system control.
Is the same as
【0021】[0021]
【発明の効果】以上説明したように、本発明によれば、
他の通信システムからの干渉を基地局または移動局受信
側で使用帯域内の広範囲のチャネルで同時に受けるよう
な1つまたは複数の周波数帯域が存在する場合、無線ゾ
ーンの中心部ほど、他の通信システムからの干渉の影響
の大きい周波数帯域の通信チャネルを使用して通信し、
無線ゾーンの周辺部ほど、他の通信システムからの干渉
の影響の小さい周波数帯域または干渉の影響の全くない
周波数帯域の通信チャネルを使用して通信するので、接
続品質および通信品質に与える干渉の影響を回避するこ
とができる。As described above, according to the present invention,
If there is one or more frequency bands in which a base station or a mobile station receiving side simultaneously receives interference from another communication system over a wide range of channels within the band used, the center of the wireless zone becomes closer to other communication systems. Communicate using a communication channel in a frequency band that is highly affected by interference from the system,
The closer to the periphery of the wireless zone, the communication is performed using a communication channel in a frequency band that is less affected by interference from other communication systems or a frequency band that is completely free of interference, so the influence of interference on connection quality and communication quality. Can be avoided.
【0022】また、本発明によれば、他の通信システム
からの干渉を受ける周波数帯域を複数の通信チャネル群
に分割し、他の通信システムからの干渉の影響の大きい
通信チャネルほど、無線ゾーンの中心部で使用するの
で、干渉の影響を回避することができる。Further, according to the present invention, a frequency band that is subject to interference from another communication system is divided into a plurality of communication channel groups, and a communication channel that is more affected by interference from another communication system has a larger radio zone. Since it is used at the center, the influence of interference can be avoided.
【図1】周波数帯域の分布例において他の通信システム
からの干渉の影響度合いの一例を示す図である。FIG. 1 is a diagram showing an example of the degree of influence of interference from another communication system in an example of frequency band distribution.
【図2】通信チャネルを使い分ける条件を示したもので
ある。FIG. 2 shows conditions for selectively using communication channels.
【図3】発信接続時のシステム制御例を示す説明図であ
る。FIG. 3 is an explanatory diagram showing an example of system control at the time of outgoing connection.
【図4】着信接続時のシステム制御例を示す説明図であ
る。FIG. 4 is an explanatory diagram showing an example of system control at the time of incoming connection.
【図5】無線ゾーン内チャネル切り替えのシステム制御
例を示す説明図である。FIG. 5 is an explanatory diagram showing an example of system control for channel switching within a wireless zone.
【図6】同一帯域内のチャネル群分割および干渉の影響
の度合いの例を示す図である。FIG. 6 is a diagram illustrating an example of the degree of influence of channel group division and interference within the same band.
【図7】B1帯域内のチャネル群分割時の各チャネル群
の使用条件を示す図である。FIG. 7 is a diagram illustrating use conditions of each channel group when dividing a channel group in the B1 band.
【図8】他システムの移動局送信側からの干渉を自シス
テムの移動局受信側で受ける使用周波数帯域の分布例を
示す図である。FIG. 8 is a diagram illustrating a distribution example of a used frequency band in which interference from a mobile station transmitting side of another system is received by a mobile station receiving side of the own system.
【図9】他システムの移動局送信側からの干渉を自シス
テムの基地局受信側で受ける使用周波数帯域の分布例を
示す図である。FIG. 9 is a diagram showing an example of a distribution of used frequency bands in which interference from a mobile station transmitting side of another system is received by a base station receiving side of the own system.
【図10】他システムの基地局送信側からの干渉を自シ
ステムの基地局受信側で受ける使用周波数帯域の分布例
を示す図である。FIG. 10 is a diagram showing an example of a distribution of used frequency bands in which interference from a base station transmitting side of another system is received by a base station receiving side of the own system.
【図11】他システムの基地局送信側からの干渉を自シ
ステムの移動局受信側で受ける使用周波数帯域の分布例
を示す図である。FIG. 11 is a diagram illustrating an example of a distribution of used frequency bands in which interference from a base station transmitting side of another system is received by a mobile station receiving side of the own system.
Claims (2)
ゾーンを形成するセルラ移動通信において他の通信シス
テムからの干渉を基地局または移動局受信側で使用帯域
内の広範囲のチャネルで同時に受けるような1つまたは
複数の周波数帯域が存在する場合、無線ゾーンの中心部
ほど、他の通信システムからの干渉の影響の大きい周波
数帯域の通信チャネルを使用して通信を行い、無線ゾー
ンの周辺部ほど、他の通信システムからの干渉の影響の
小さい周波数帯域または干渉の影響の全くない周波数帯
域の通信チャネルを使用して通信を行うことを特徴とす
るセルラ移動通信における対干渉システム制御方式。In a cellular mobile communication forming a wireless zone using a plurality of different frequency bands, interference from another communication system is received simultaneously by a base station or a mobile station receiving side over a wide range of channels within the used band. When one or a plurality of frequency bands are present, communication is performed using a communication channel of a frequency band in which the influence of interference from another communication system is greater at the center of the wireless zone, and at the periphery of the wireless zone. And a communication system using a communication channel in a frequency band having little influence of interference from another communication system or a frequency band having no influence of interference.
局または移動局受信側で使用帯域内の広範囲のチャネル
で同時に受けるような周波数帯域を複数の通信チャネル
群に分割し、他の通信システムからの干渉の影響の大き
い通信チャネルほど、無線ゾーンの中心部で使用するこ
とを特徴とする請求項1記載のセルラ移動通信における
対干渉システム制御方式。2. A frequency band in which a base station or a mobile station receiving side simultaneously receives interference from the other communication system over a wide range of channels within a used band, and divides the frequency band into a plurality of communication channel groups. 2. The system according to claim 1, wherein a communication channel having a greater influence of interference from the mobile station is used in a central portion of the wireless zone.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19752597A JP3392722B2 (en) | 1997-07-23 | 1997-07-23 | Control method for anti-interference system in cellular mobile communication |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19752597A JP3392722B2 (en) | 1997-07-23 | 1997-07-23 | Control method for anti-interference system in cellular mobile communication |
Publications (2)
Publication Number | Publication Date |
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JPH1141655A true JPH1141655A (en) | 1999-02-12 |
JP3392722B2 JP3392722B2 (en) | 2003-03-31 |
Family
ID=16375926
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JP19752597A Expired - Fee Related JP3392722B2 (en) | 1997-07-23 | 1997-07-23 | Control method for anti-interference system in cellular mobile communication |
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JP (1) | JP3392722B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005341432A (en) * | 2004-05-28 | 2005-12-08 | Ntt Docomo Inc | Frequency selecting apparatus, mobile communication system and multi-band control method |
WO2006088082A1 (en) * | 2005-02-18 | 2006-08-24 | Mitsubishi Denki Kabushiki Kaisha | Multi-band radio communication method and base station |
US7155233B2 (en) | 2001-05-25 | 2006-12-26 | Ntt Docomo, Inc. | Radio communication system for reducing interferences with respect to other communication system using close frequency band |
KR100663557B1 (en) | 2004-11-08 | 2007-01-02 | 삼성전자주식회사 | An interference canceling method for distributed wireless communication system |
-
1997
- 1997-07-23 JP JP19752597A patent/JP3392722B2/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7155233B2 (en) | 2001-05-25 | 2006-12-26 | Ntt Docomo, Inc. | Radio communication system for reducing interferences with respect to other communication system using close frequency band |
JP2005341432A (en) * | 2004-05-28 | 2005-12-08 | Ntt Docomo Inc | Frequency selecting apparatus, mobile communication system and multi-band control method |
KR100663557B1 (en) | 2004-11-08 | 2007-01-02 | 삼성전자주식회사 | An interference canceling method for distributed wireless communication system |
WO2006088082A1 (en) * | 2005-02-18 | 2006-08-24 | Mitsubishi Denki Kabushiki Kaisha | Multi-band radio communication method and base station |
JPWO2006088082A1 (en) * | 2005-02-18 | 2008-07-03 | 三菱電機株式会社 | Multiband wireless communication method and base station |
JP2011120298A (en) * | 2005-02-18 | 2011-06-16 | Mitsubishi Electric Corp | Radio communication station |
Also Published As
Publication number | Publication date |
---|---|
JP3392722B2 (en) | 2003-03-31 |
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