JP2001054156A - Method of searching for peripheral base station, mobile station, mobile communication system and quality measurement instrument - Google Patents
Method of searching for peripheral base station, mobile station, mobile communication system and quality measurement instrumentInfo
- Publication number
- JP2001054156A JP2001054156A JP22892399A JP22892399A JP2001054156A JP 2001054156 A JP2001054156 A JP 2001054156A JP 22892399 A JP22892399 A JP 22892399A JP 22892399 A JP22892399 A JP 22892399A JP 2001054156 A JP2001054156 A JP 2001054156A
- Authority
- JP
- Japan
- Prior art keywords
- base station
- search
- perch channel
- peripheral base
- priority
- 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
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、基地局が送信した
とまり木チャネルを探索し、受信することにより通信ま
たは待ち受けを行う基地局を決定するための周辺基地局
探索方法等に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peripheral base station search method for searching for a perch channel transmitted by a base station and determining a base station to perform communication or standby by receiving the perch channel.
【０００２】[0002]
【従来の技術】現在普及している携帯電話のような移動
通信システムでは、サービスエリア全体をセルと呼ばれ
る比較的小さな無線ゾーンに分割してサービスを行って
いる。このようなシステムは、例えば図１に示すよう
に、分割された無線ゾーンをカバーする複数の基地局１
１１−１〜１１１−５と、これら基地局１１１−１〜１
１１−５との間に無線チャネルを設定して通信を行う移
動局１１２−１〜１１２−３により構成されている。2. Description of the Related Art In a mobile communication system such as a cellular phone which is currently widespread, services are provided by dividing an entire service area into relatively small radio zones called cells. Such a system includes a plurality of base stations 1 that cover a divided wireless zone as shown in FIG. 1, for example.
11-1 to 111-5, and these base stations 111-1 to 111-1
The mobile station 112-1 to 112-3 perform communication by setting a wireless channel with the mobile station 11-5.
【０００３】基地局からある送信電力で送信された電波
は減衰しながら空間を伝搬し受信点に到達する。電波が
受ける減衰量は送信点と受信点の距離が遠くなるほど大
きくなるという性質があるため、基本的に遠い基地局か
ら送信されるとまり木チャネルは弱い受信レベルで、近
い基地局から送信されるとまり木チャネルは強いレベル
で受信される。現実には、伝搬損失の大小は距離だけで
はなく、地形や建造物などの状況により異なってくるた
め、移動局の移動に伴って各基地局からのとまり木チャ
ネルの受信電力は大きく変動する。基地局から送信され
る信号をよりよい品質で受信するためには、移動局は各
基地局からのとまり木チャネルを常に監視し、最良の基
地局を選択することが重要となる。A radio wave transmitted from a base station at a certain transmission power propagates in space while attenuating and reaches a receiving point. Since the amount of attenuation received by a radio wave increases as the distance between the transmitting point and the receiving point increases, basically the perch channel has a weak reception level when transmitted from a distant base station, and the perch channel when transmitted from a close base station. Channels are received at a strong level. In reality, the magnitude of the propagation loss depends not only on the distance but also on the terrain, the building, and the like, so that the received power of the perch channel from each base station greatly fluctuates with the movement of the mobile station. In order to receive a signal transmitted from a base station with better quality, it is important that the mobile station constantly monitors the perch channel from each base station and selects the best base station.
【０００４】一方、移動通信システムを運用していくに
あたって、システム設計者は自らが意図した通りに設置
された基地局により所望の（通信）品質やカバレッジが
得られているかどうかを日々確認する作業が重要であ
る。このような目的に用いる装置を品質測定装置と呼ぶ
ことにする。品質測定装置には様々な形式のものが用い
られる。あらかじめ受信する無線チャネルが設定された
受信機を多数用意し、同時に複数の無線チャネルの受信
レベルやＳＩＲ（信号対干渉電力比；Signal toInterfe
rence power Ratio）を測定する、簡易な構成のもの
や、移動局と同様に自ら接続する基地局（のとまり木チ
ャネル）を探索し受信機に探索されたチャネルを設定し
受信レベルやＳＩＲを測定する高度なものがある。後者
のように、自ら接続する基地局を探索する品質測定装置
は動作が複雑となるが、用意する受信機数を少なくでき
小型化できるなどの利点があり、本発明ではこのような
品質測定装置も対象としている。On the other hand, when operating a mobile communication system, a system designer checks on a daily basis whether a desired (communication) quality or coverage is obtained by a base station installed as intended. is important. An apparatus used for such a purpose is called a quality measuring apparatus. Various types of quality measuring devices are used. A large number of receivers in which radio channels to be received are set in advance are prepared, and the reception levels of a plurality of radio channels and SIR (Signal to Interference Power Ratio; Signal to Interfe) are simultaneously prepared.
rence power ratio), or a base station (perch channel) to which it is connected as well as a mobile station is searched, and the receiver sets the searched channel and measures the reception level and SIR. Some are advanced. As in the latter case, the quality measuring device for searching for a base station to be connected by itself has a complicated operation, but has an advantage that the number of receivers to be prepared can be reduced and the size can be reduced. Is also targeted.
【０００５】現在の移動通信システムでは、移動局や品
質測定装置は基地局から通知される周辺基地局情報に基
づいて自らが接続する基地局の探索を行っている。これ
は、とまり木チャネルとして使用可能な多数の無線チャ
ネルのうち、自基地局の周辺の基地局が使用しており移
動局により探索される可能性の高い無線チャネルをあら
かじめ移動局に通知することにより、移動局が無線チャ
ネル探索に費やす時間を短くし、探索を高速化すること
を意図した手法である。[0005] In the current mobile communication system, a mobile station and a quality measuring device search for a base station to which the mobile station and the quality measuring device are to be connected based on peripheral base station information notified from the base station. This is achieved by notifying the mobile station in advance of the radio channels that are used by the base stations in the vicinity of the own base station and are likely to be searched by the mobile station among a large number of radio channels that can be used as perch channels. This is a technique intended to shorten the time that a mobile station spends for searching for a wireless channel and to speed up the search.
【０００６】[0006]
【発明が解決しようとする課題】このような手法におい
ては、移動局がより正確に周辺基地局を探索するために
は、周辺基地局情報を多数の周辺基地局に関して用意す
る必要がある。しかし、周辺基地局情報を増やすと、基
地局から移動局へ通知する情報が多くなるため、情報の
取得に時間がかかってしまう。さらに、移動局は多数の
無線チャネルについて探索を実行しなければならないた
め、移動局における周辺基地局探索の負荷を増大させて
しまうという好ましくない問題を生ずる。In such a method, in order for a mobile station to more accurately search for a peripheral base station, it is necessary to prepare peripheral base station information for a large number of peripheral base stations. However, when the information on the neighboring base stations is increased, the information to be notified from the base station to the mobile station increases, so that it takes time to acquire the information. Further, since the mobile station must search for a large number of wireless channels, there is an undesired problem of increasing the load of the mobile station in searching for nearby base stations.
【０００７】反対に、周辺基地局情報を限られた少数の
基地局に関してのみ用意すると、情報が少なくなるため
情報の取得にかかる時間が短縮され、さらに、移動局が
探索する無線チャネルが少なくなるため、周辺基地局探
索の負荷は軽減されるが、ある地点で最良である基地局
が周辺基地局情報に含まれていない可能性が高くなって
しまうために、周辺基地局探索の確度（精度）が低下
し、通信品質が劣化するあるいは通話が強制切断され
る、あるいは、着信信号が受信できないなど重大な問題
が発生する。On the other hand, if the peripheral base station information is prepared for only a limited number of base stations, the amount of information is reduced, so that the time required to acquire the information is reduced, and the number of radio channels searched by the mobile station is reduced. Therefore, the load of searching for a nearby base station is reduced, but the probability that the best base station at a certain point is not included in the surrounding base station information increases. ), Communication quality is degraded, the call is forcibly disconnected, or an incoming signal cannot be received, causing serious problems.
【０００８】従来の方法では、最良の基地局（受信レベ
ルの高い一局）から通知される周辺基地局リスト（周辺
基地局情報）のみに基づいて周辺基地局の探索を行って
いたため、周辺基地局リストに載っていない基地局が探
索されることはなく、不意な飛び越し伝搬などにより遠
くの基地局への伝搬状況が最良となった場合でもその基
地局と接続することはできなかった。In the conventional method, the search for the peripheral base station is performed based only on the peripheral base station list (neighboring base station information) notified from the best base station (one station having a high reception level). A base station not included in the station list was not searched for, and even if the propagation condition to a distant base station became the best due to unexpected jump propagation or the like, it was not possible to connect to that base station.
【０００９】このような問題点に鑑み、本発明は、基地
局が提供する周辺基地局情報を増大させることなく、移
動局、品質測定装置等における周辺基地局探索の精度を
向上させる方法を提供することを目的とする。In view of the above problems, the present invention provides a method for improving the accuracy of searching for a nearby base station in a mobile station, a quality measuring device, or the like without increasing the information on the nearby base station provided by the base station. The purpose is to do.
【００１０】[0010]
【課題を解決するための手段】図２は本発明の作用を説
明するための概念図である。図２の左上には、基地局Ａ
が管理し移動局に通知する周辺基地局のリストが概念的
に表されている。図では基地局Ａの周辺に基地局Ｂ、
Ｃ、Ｄ、Ｅ、Ｆ、およびＧが位置し、これらが周辺基地
局リストに載っている。一方、図２の右上には、基地局
Ｂが管理し移動局に通知する周辺基地局のリストが概念
的に表されている。図では基地局Ｂの周辺に基地局Ａ、
Ｃ、Ｇ、Ｈ、Ｊ、およびＫが位置し、これらがリストに
載っている。従来の方法では、最良の基地局から通知さ
れる周辺基地局リストのみに基づいて周辺基地局の探索
を行っていたため、周辺基地局リストに載っていない基
地局が探索されることはなく、不意な飛び越し伝搬など
により遠くの基地局への伝搬状況が最良となった場合で
もその基地局と接続することはできなかった。しかし、
本発明の適用により、図２の下に示したように移動局は
複数の基地局から通知される周辺基地局情報（図２の下
ではそれらの和集合）に基づいて周辺基地局の探索を行
うために、より広範囲な基地局を探索対象とすることが
でき、時々刻々と変化する伝搬状況に適応することが可
能で常に最良の基地局と接続するように作用する。FIG. 2 is a conceptual diagram for explaining the operation of the present invention. In the upper left of FIG.
Is conceptually represented by a list of neighboring base stations which are managed and notified to the mobile station. In the figure, base station B is located around base station A,
C, D, E, F, and G are located and are on the list of neighboring base stations. On the other hand, in the upper right of FIG. 2, a list of peripheral base stations managed by the base station B and notified to the mobile station is conceptually represented. In the figure, base station A is located around base station B,
C, G, H, J, and K are located and are on the list. In the conventional method, since the search for the peripheral base station is performed based only on the peripheral base station list notified from the best base station, a base station that is not included in the peripheral base station list is not searched. Even when the condition of propagation to a distant base station becomes the best due to intermittent propagation or the like, it has not been possible to connect to that base station. But,
By the application of the present invention, as shown in the lower part of FIG. 2, the mobile station searches for neighboring base stations based on neighboring base station information (union thereof in FIG. 2) notified from a plurality of base stations. In order to do so, a wider range of base stations can be set as a search target, and can adapt to a propagation condition that changes from moment to moment, and acts so as to always connect to the best base station.
【００１１】また、作成された和集合のうち図２の例で
は、例えば、基地局ＡおよびＢから通知された両方の周
辺基地局リストに載っている基地局ＣおよびＧを優先的
に探索し、その他の基地局を低優先度にて探索するよう
にすることもできる。こうすれば、周辺基地局の探索の
ための負荷を増大させることなく、検出される確率の高
い基地局を効率的に探索するように作用する。In the example of FIG. 2 of the created union, for example, the base stations C and G listed in both the neighboring base station lists notified from the base stations A and B are preferentially searched. , Other base stations may be searched with low priority. In this way, it works to efficiently search for a base station with a high probability of being detected without increasing the load for searching for a nearby base station.
【００１２】上記目的を達成するために、請求項１によ
る発明は、基地局が送信したとまり木チャネルを探索
し、受信することにより通信または待ち受けを行う基地
局を決定するための周辺基地局探索方法であって、周辺
基地局情報を含むとまり木チャネルを探索し、受信する
探索受信ステップと、前記探索受信手段により受信した
とまり木チャネルから周辺基地局情報を取得する取得ス
テップとを備え、前記取得ステップは、前記探索受信ス
テップにより受信したとまり木チャネルが複数ある場合
には、該複数のとまり木チャネルから周辺基地局情報を
取得し、前記探索受信ステップは、前記取得ステップに
より取得した周辺基地局情報に基づいてとまり木チャネ
ルの探索を行うことを特徴とする。[0012] In order to achieve the above object, the invention according to claim 1 is a method of searching for a perimeter channel transmitted by a base station, and determining a base station to perform communication or standby by receiving the perch channel. Comprises a search and reception step of searching for and receiving a perch channel including peripheral base station information, and an obtaining step of obtaining peripheral base station information from the perch channel received by the search and reception means. When there are a plurality of perch channels received in the search and reception step, the peripheral base station information is acquired from the plurality of perch channels, and the search and reception step is based on the peripheral base station information acquired in the acquisition step. A search for a perch channel is performed.
【００１３】請求項２による発明は、請求項１に記載の
周辺基地局探索方法であって、前記周辺基地局情報の和
集合を作成する作成ステップをさらに備え、前記探索受
信ステップは、前記和集合に基づいてとまり木チャネル
の探索を行うことを特徴とする。[0013] The invention according to claim 2 is the peripheral base station searching method according to claim 1, further comprising a creating step of creating a union set of the peripheral base station information, and wherein the searching and receiving step includes: A search for a perch channel is performed based on the set.
【００１４】請求項３による発明は、請求項２に記載の
周辺基地局探索方法であって、前記和集合の個々の基地
局について優先順位づけを行う優先順位づけステップを
さらに備え、前記探索受信ステップは、優先度の高い基
地局のとまり木チャネルについては高頻度に探索を行
い、優先度の低い基地局のとまり木チャネルについては
低頻度に探索を行うことを特徴とする。The invention according to claim 3 is the peripheral base station search method according to claim 2, further comprising a priority ordering step of prioritizing individual base stations of the union, wherein the search reception is performed. The step is characterized in that a search is frequently performed for a perch channel of a base station having a higher priority, and a search is performed less frequently for a perch channel of a base station having a lower priority.
【００１５】請求項４による発明は、請求項３に記載の
周辺基地局探索方法であって、前記優先順位づけステッ
プは、前記周辺基地局情報に含まれていた数が多い基地
局の優先度を高く設定することを特徴とする。According to a fourth aspect of the present invention, in the peripheral base station searching method according to the third aspect, the prioritizing step includes the step of setting a priority of a base station having a large number included in the peripheral base station information. Is set high.
【００１６】請求項５による発明は、請求項３または４
に記載の周辺基地局探索方法であって、前記優先順位づ
けステップは、基地局の優先度を、該基地局が含まれて
いたとまり木チャネルの前記探索受信ステップにおける
受信レベルが高い場合には高く設定することを特徴とす
る。The invention according to claim 5 is the invention according to claim 3 or 4.
In the peripheral base station searching method according to the above, the priority ordering step, the priority of the base station, if the reception level in the search and reception step of the perch channel that the base station was included is high, It is characterized by setting.
【００１７】請求項６による発明は、請求項３ないし５
のいずれかに記載の周辺基地局探索方法であって、前記
周辺基地局情報の個々の基地局は優先順位づけが行われ
ており、前記優先順位づけステップは、前記周辺基地局
情報における優先順位づけを考慮して、前記和集合にお
ける優先順位づけを行うことを特徴とする。The invention according to claim 6 is the invention according to claims 3 to 5
The peripheral base station searching method according to any one of the above, wherein the individual base stations of the peripheral base station information are prioritized, and the prioritizing step includes: It is characterized in that priority is assigned to the union in consideration of the assignment.
【００１８】請求項７による発明は、基地局が送信した
とまり木チャネルを探索し、受信することにより通信ま
たは待ち受けを行う基地局を決定する移動局であって、
周辺基地局情報を含むとまり木チャネルを探索し、受信
する探索受信手段と、前記探索受信手段により受信した
とまり木チャネルから周辺基地局情報を取得する取得手
段と、前記取得手段により取得した周辺基地局情報に基
づいてとまり木チャネルの探索を行うように前記探索受
信手段を制御する制御手段とを備え、前記取得手段は、
前記探索受信手段により受信したとまり木チャネルが複
数ある場合には、該複数のとまり木チャネルから周辺基
地局情報を取得することを特徴とする。According to a seventh aspect of the present invention, there is provided a mobile station which searches for a perch channel transmitted by a base station and determines a base station which performs communication or standby by receiving the perch channel.
Search and reception means for searching for and receiving a perch channel including peripheral base station information, acquisition means for acquiring peripheral base station information from the perch channel received by the search and reception means, and peripheral base station information acquired by the acquisition means Control means for controlling the search receiving means to search for a perch channel based on the, the obtaining means,
When there are a plurality of perch channels received by the search and reception means, peripheral base station information is acquired from the plurality of perch channels.
【００１９】請求項８による発明は、請求項７に記載の
移動局であって、前記制御手段は、前記周辺基地局情報
の和集合を作成し、前記探索受信手段が前記和集合に基
づいてとまり木チャネルの探索を行うように前記探索受
信手段を制御することを特徴とする。The invention according to claim 8 is the mobile station according to claim 7, wherein the control means creates a union of the peripheral base station information, and the search and reception means determines the union based on the union. The search and reception unit is controlled to search for a perch channel.
【００２０】請求項９による発明は、請求項８に記載の
移動局であって、前記制御手段は、前記和集合の個々の
基地局について優先順位づけを行い、前記探索受信手段
が、優先度の高い基地局のとまり木チャネルについては
高頻度に探索を行い、優先度の低い基地局のとまり木チ
ャネルについては低頻度に探索を行うように前記探索受
信手段を制御することを特徴とする。According to a ninth aspect of the present invention, in the mobile station according to the eighth aspect, the control unit assigns a priority to each base station of the union, and the search and reception unit assigns a priority. The search and reception unit is controlled so that a search is performed with high frequency for a perch channel of a base station with a high priority and a search is performed with low frequency for a perch channel of a base station with a low priority.
【００２１】請求項１０による発明は、請求項９に記載
の移動局であって、前記制御手段は、前記周辺基地局情
報に含まれていた数が多い基地局の優先度を高く設定す
ることを特徴とする。According to a tenth aspect of the present invention, in the mobile station according to the ninth aspect, the control means sets the priority of a base station having a large number included in the peripheral base station information to be high. It is characterized by.
【００２２】請求項１１による発明は、請求項９または
１０に記載の移動局であって、前記制御手段は、基地局
の優先度を、該基地局が含まれていたとまり木チャネル
の前記探索受信手段による受信レベルが高い場合には高
く設定することを特徴とする。According to an eleventh aspect of the present invention, in the mobile station according to the ninth or tenth aspect, the control means determines the priority of the base station by searching and receiving the perch channel including the base station. When the reception level by the means is high, it is set high.
【００２３】請求項１２による発明は、請求項９ないし
１１のいずれかに記載の移動局であって、前記周辺基地
局情報の個々の基地局は優先順位づけが行われており、
前記制御手段は、前記周辺基地局情報における優先順位
づけを考慮して、前記和集合における優先順位づけを行
うことを特徴とする。According to a twelfth aspect of the present invention, in the mobile station according to any one of the ninth to eleventh aspects, the individual base stations in the peripheral base station information are prioritized,
The control means performs the prioritization in the union set in consideration of the prioritization in the peripheral base station information.
【００２４】請求項１３による発明は、請求項７ないし
１２のいずれかに記載の移動局と周辺基地局情報を含む
とまり木チャネルを送信する複数の基地局とを備えたこ
とを特徴とする。According to a thirteenth aspect of the present invention, there is provided the mobile station according to any one of the seventh to twelfth aspects, and a plurality of base stations for transmitting a perch channel including peripheral base station information.
【００２５】請求項１４による発明は、基地局が送信し
たとまり木チャネルを探索し、受信することにより通信
の品質を測定する品質測定装置であって、周辺基地局情
報を含むとまり木チャネルを探索し、受信する探索受信
手段と、前記探索受信手段により受信したとまり木チャ
ネルから周辺基地局情報を取得する取得手段と、前記取
得手段により取得した周辺基地局情報に基づいてとまり
木チャネルの探索を行うように前記探索受信手段を制御
する制御手段とを備え、前記取得手段は、前記探索受信
手段により受信したとまり木チャネルが複数ある場合に
は、該複数のとまり木チャネルから周辺基地局情報を取
得することを特徴とする。According to a fourteenth aspect of the present invention, there is provided a quality measuring device for searching for a perch channel transmitted by a base station and measuring communication quality by receiving the perch channel. Search receiving means for receiving, obtaining means for obtaining peripheral base station information from the perch channel received by the search receiving means, and searching for a perch channel based on the peripheral base station information obtained by the obtaining means, Control means for controlling search and reception means, wherein the acquisition means, when there are a plurality of perch channels received by the search and reception means, acquires peripheral base station information from the plurality of perch channels. I do.
【００２６】請求項１５による発明は、請求項１４に記
載の品質測定装置であって、前記制御手段は、前記周辺
基地局情報の和集合を作成し、前記探索受信手段が前記
和集合に基づいてとまり木チャネルの探索を行うように
前記探索受信手段を制御することを特徴とする。The invention according to claim 15 is the quality measuring apparatus according to claim 14, wherein the control unit creates a union of the peripheral base station information, and the search and reception unit determines the union based on the union. The search and reception means is controlled to search for a perch channel.
【００２７】請求項１６による発明は、請求項１５に記
載の品質測定装置であって、前記制御手段は、前記和集
合の個々の基地局について優先順位づけを行い、前記探
索受信手段が、優先度の高い基地局のとまり木チャネル
については高頻度に探索を行い、優先度の低い基地局の
とまり木チャネルについては低頻度に探索を行うように
前記探索受信手段を制御することを特徴とする。The invention according to claim 16 is the quality measuring apparatus according to claim 15, wherein the control means assigns a priority to each base station of the union, and the search and reception means assigns a priority. The search and reception unit is controlled so that a search is performed with high frequency for a perch channel of a base station with a high degree, and a search is performed with low frequency for a perch channel of a base station with a low priority.
【００２８】請求項１７による発明は、請求項１６に記
載の品質測定装置であって、前記制御手段は、前記周辺
基地局情報に含まれていた数が多い基地局の優先度を高
く設定することを特徴とする。[0028] The invention according to claim 17 is the quality measuring apparatus according to claim 16, wherein the control means sets the priority of a base station having a large number included in the peripheral base station information to be high. It is characterized by the following.
【００２９】請求項１８による発明は、請求項１６また
は１７に記載の品質測定装置であって、前記制御手段
は、基地局の優先度を、該基地局が含まれていたとまり
木チャネルの前記探索受信手段による受信レベルが高い
場合には高く設定することを特徴とする。The invention according to claim 18 is the quality measuring apparatus according to claim 16 or 17, wherein the control means determines the priority of the base station and searches for the perch channel in which the base station was included. When the reception level by the receiving means is high, it is set high.
【００３０】請求項１９による発明は、請求項１６ない
し１８のいずれかに記載の品質測定装置であって、前記
周辺基地局情報の個々の基地局は優先順位づけが行われ
ており、前記制御手段は、前記周辺基地局情報における
優先順位づけを考慮して、前記和集合における優先順位
づけを行うことを特徴とする。The invention according to claim 19 is the quality measuring apparatus according to any one of claims 16 to 18, wherein the individual base stations in the peripheral base station information are prioritized, and the control is performed. The means performs the prioritization in the union set in consideration of the prioritization in the peripheral base station information.
【００３１】以上の構成によれば、基地局が提供する周
辺基地局情報を増大させることなく、移動局等における
周辺基地局探索の精度を向上させることができる。According to the above configuration, it is possible to improve the accuracy of the search for a peripheral base station in a mobile station or the like without increasing the peripheral base station information provided by the base station.
【００３２】また、各基地局の探索に優先順位づけを行
うことにより、周辺基地局探索の負荷を増大させること
なく、周辺基地局探索の精度を向上させることができ
る。By prioritizing the search of each base station, the accuracy of the search for the peripheral base station can be improved without increasing the load of the search for the peripheral base station.
【００３３】[0033]
【発明の実施の形態】以下、図面を参照して、本発明の
実施形態について詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００３４】（第１実施形態）図３は本発明の第１実施
形態に係る移動局の構成例を示す図である。同図は、移
動局の構成のうち本発明に関係する部分のみを概念的に
示している。本実施形態に係る移動局は、移動局送受信
装置３２０、ユーザインタフェース３２２、アンテナ３
２４、報知情報取得制御回路３２６、共通制御回路３２
８、セルサーチ制御回路３３０、周辺基地局リスト編集
回路３３２、メモリ３３４、およびバス３３６を備え
る。(First Embodiment) FIG. 3 is a diagram showing a configuration example of a mobile station according to a first embodiment of the present invention. FIG. 3 conceptually shows only a part related to the present invention in the configuration of the mobile station. The mobile station according to the present embodiment includes a mobile station transmitting / receiving device 320, a user interface 322, an antenna 3
24, notification information acquisition control circuit 326, common control circuit 32
8, a cell search control circuit 330, a peripheral base station list editing circuit 332, a memory 334, and a bus 336.
【００３５】本実施形態に係る移動局は、基地局が送信
したとまり木チャネルを探索し、受信することにより通
信または待ち受けを行う基地局を決定する。基地局が送
信するとまり木チャネルには周辺基地局情報、すなわち
該基地局の周辺の基地局のとまり木チャネル等の情報が
含まれている。The mobile station according to the present embodiment searches for the perch channel transmitted by the base station, and determines the base station that performs communication or standby by receiving the perch channel. When transmitted by the base station, the perch channel contains information on peripheral base stations, that is, information on perch channels and the like of base stations near the base station.
【００３６】移動局送受信装置３２０は基地局から送出
される無線変調されたユーザ情報や制御信号を復調した
り、ユーザ信号や制御信号を符号化・変調し送るための
装置である。送受信装置３２０は周波数分割多元接続
（Frequency Division Multiple Access; FDMA）、時分
割多元接続（Time Division Multiple Access; TDM
A）、符号分割多元接続（Code Division Multiple Acce
ss; CDMA）などにより異なるが、無線区間の変復調方式
の違いは本発明の効果に何ら影響を与えない。移動局送
受信装置３２０はアンテナ３２４およびユーザインタフ
ェース３２２にそれぞれ接続されている。共通制御回路
３２８は、移動局の全般的な制御を司る回路である。報
知情報取得制御回路３２６は、移動局送受信装置３２０
を制御することによりとまり木チャネルにより基地局か
ら移動局に通知される報知情報を取得する回路である。
セルサーチ制御回路３３０は、移動局送受信装置３２０
に対してセルサーチ（周辺基地局探索）の実行を指令
し、また、セルサーチ実行結果を取得するための回路で
ある。さらに、周辺基地局リスト編集回路３３２は、報
知情報取得制御回路３２６によりとまり木チャネルから
取得した報知情報に含まれている周辺基地局リストを編
集し、複数の基地局から取得した周辺基地局リストの和
集合を作成するための回路である。メモリ３３４は各種
データを記憶するための回路である。報知情報取得制御
回路３２６、共通制御回路３２８、セルサーチ制御回路
３３０、周辺基地局リスト編集回路３３２、およびメモ
リ３３４はバスを介して相互に接続されている。The mobile station transmitting / receiving apparatus 320 is an apparatus for demodulating radio-modulated user information and a control signal transmitted from a base station, and for encoding / modulating and transmitting a user signal and a control signal. The transmission / reception device 320 includes a frequency division multiple access (FDMA) and a time division multiple access (TDM).
A), Code Division Multiple Acce
ss; CDMA) and the like, but the difference in the modulation and demodulation method in the wireless section does not affect the effect of the present invention at all. The mobile station transmitting / receiving device 320 is connected to the antenna 324 and the user interface 322, respectively. The common control circuit 328 is a circuit that performs overall control of the mobile station. The broadcast information acquisition control circuit 326 controls the mobile station transceiver 320
Is a circuit that obtains broadcast information notified from the base station to the mobile station through the perch channel by controlling the perch channel.
The cell search control circuit 330 is a mobile station transceiver 320
To execute a cell search (search for a neighboring base station) and obtain a result of the cell search. Further, the peripheral base station list editing circuit 332 edits the peripheral base station list included in the broadcast information acquired from the perch channel by the broadcast information acquisition control circuit 326, and edits the peripheral base station list acquired from the plurality of base stations. This is a circuit for creating a union. The memory 334 is a circuit for storing various data. The broadcast information acquisition control circuit 326, the common control circuit 328, the cell search control circuit 330, the peripheral base station list editing circuit 332, and the memory 334 are mutually connected via a bus.
【００３７】図２を用いて本実施形態に係る移動局の動
作例を説明する。移動局の報知情報取得制御回路３２６
は、基地局ＡよりＢ、Ｃ、Ｄ、Ｅ、Ｆ、およびＧを要素
とする周辺基地局情報を取得し、メモリ３３４に格納す
る。一方、基地局ＢからはＡ、Ｃ、Ｇ、Ｈ、Ｊ、および
Ｋを要素とする周辺基地局情報を取得し、メモリ３３４
に格納する。周辺基地局リスト編集回路３３２は、メモ
リ３３４上に登録された複数の周辺基地局リストを読み
出し、その和集合である、Ａ、Ｂ、Ｃ、Ｄ、Ｅ、Ｆ、
Ｇ、Ｈ、Ｊ、およびＫを要素とする新たな周辺基地局リ
ストを作成する。セルサーチ制御回路３３０はこの新た
に作成された周辺基地局情報をメモリ３３４から読み出
し、該情報に基づき移動局送受信装置３２０が行うセル
サーチ動作を制御する。An operation example of the mobile station according to the present embodiment will be described with reference to FIG. Broadcast information acquisition control circuit 326 for mobile station
Acquires peripheral base station information having B, C, D, E, F, and G as elements from the base station A, and stores the information in the memory 334. On the other hand, peripheral base station information having A, C, G, H, J, and K as elements is acquired from the base station B, and is stored in the memory 334.
To be stored. The peripheral base station list editing circuit 332 reads a plurality of peripheral base station lists registered in the memory 334 and obtains a union of A, B, C, D, E, F,
Create a new peripheral base station list having G, H, J, and K as elements. The cell search control circuit 330 reads the newly created peripheral base station information from the memory 334 and controls the cell search operation performed by the mobile station transmitting / receiving apparatus 320 based on the information.
【００３８】このように移動局が複数の基地局から周辺
基地局情報を取得することにより、基地局が提供する周
辺基地局情報を増大させることなく、移動局における周
辺基地局探索の精度を向上させることができる。As described above, the mobile station acquires the peripheral base station information from a plurality of base stations, thereby improving the accuracy of the mobile station in searching for the peripheral base station without increasing the peripheral base station information provided by the base station. Can be done.
【００３９】（第２実施形態）本発明の第２実施形態に
係る移動局の構成は、本発明の第１実施形態に係る移動
局の構成と同様である（図３参照）。本実施形態に係る
移動局は、周辺基地局情報に含まれていた数が多い基地
局の優先度を高く設定して、各基地局の探索の優先順位
づけを行うことにより、周辺基地局探索の負荷を増大さ
せることなく、周辺基地局探索の精度を向上させること
ができる。(Second Embodiment) The configuration of the mobile station according to the second embodiment of the present invention is the same as the configuration of the mobile station according to the first embodiment of the present invention (see FIG. 3). The mobile station according to the present embodiment sets the priority of the base station having a large number included in the peripheral base station information to a high priority, and prioritizes the search of each base station, thereby searching for the peripheral base station. , It is possible to improve the accuracy of the search for neighboring base stations without increasing the load on the base station.
【００４０】図４は本発明の第２実施形態に係る移動局
の動作例を説明するための図である。図では、２つの基
地局からそれぞれ、ＢＣＤＥＦＧ、および、ＡＣＧＨＪ
Ｋという周辺基地局情報を取得した場合について示して
いる。移動局はこれら２つの周辺基地局情報を用いて、
これらの和集合を作成するが、その時にリストに現れる
回数に応じて要素を区別する。図では、ＣおよびＧが双
方のリストに現れているためこれらを高優先度とし、探
索頻度を２秒に一回と設定している。これ以外の要素に
ついては低優先度とし、探索頻度を１０秒に一回と設定
している。FIG. 4 is a diagram for explaining an operation example of the mobile station according to the second embodiment of the present invention. In the figure, BCDEFG and ACGHJ from two base stations, respectively.
The figure shows a case where peripheral base station information K is acquired. The mobile station uses these two neighboring base station information,
Create a union of these, but distinguish the elements according to the number of times they appear in the list at that time. In the figure, since C and G appear in both lists, they are given high priority, and the search frequency is set to once every two seconds. Other elements are set to low priority, and the search frequency is set to once every 10 seconds.
【００４１】図では得られた周辺基地局情報が２つの場
合について説明しているが、２より多くの周辺基地局情
報が存在している場合でも、それらリストに現れる回数
により優先順位づけが可能であり全く同様の手順で動作
が可能である。また、図では、高優先度のものと低優先
度のものに固定的に探索頻度を与えるかのごとく説明し
たが、これは本発明の実施形態を限定するものではな
い。どのような基準により頻度を指定するとしても、得
られた複数の周辺基地局リストに現れる回数に応じて、
現れる回数の多い要素に対して探索頻度を高く、現れる
回数の少ない要素に対して探索頻度を低く設定する限り
において、全く同様の効果を得ることができる。Although the figure illustrates the case where there are two neighboring base station information obtained, even if there are more than two neighboring base station information, prioritization can be performed according to the number of appearances in those lists. Therefore, the operation can be performed in exactly the same procedure. Further, in the figure, the description has been made as if the search frequency is fixedly assigned to the high priority and the low priority, but this does not limit the embodiment of the present invention. Whatever criteria you specify the frequency, depending on the number of times it appears in the resulting list of neighboring base stations,
The same effect can be obtained as long as the search frequency is set higher for elements that appear more frequently and the search frequency is set lower for elements that appear less frequently.
【００４２】（第３実施形態）本発明の第３実施形態に
係る移動局の構成は、本発明の第１実施形態に係る移動
局の構成と同様である（図３参照）。本実施形態に係る
移動局は、基地局の優先度を、該基地局が含まれていた
とまり木チャネルの受信レベルが高い場合には高く設定
して、各基地局の探索の優先順位づけを行うことによ
り、周辺基地局探索の負荷を増大させることなく、周辺
基地局探索の精度を向上させることができる。本実施形
態においても、周辺基地局情報に含まれていた数が多い
基地局の優先度を高く設定している。(Third Embodiment) The configuration of the mobile station according to the third embodiment of the present invention is the same as the configuration of the mobile station according to the first embodiment of the present invention (see FIG. 3). The mobile station according to the present embodiment sets the priority of the base station to be high when the reception level of the perch channel that includes the base station is high, and prioritizes the search of each base station. This makes it possible to improve the accuracy of the peripheral base station search without increasing the load of the peripheral base station search. Also in the present embodiment, the priority of a base station having a large number included in the peripheral base station information is set high.
【００４３】図５は本発明の第３実施形態に係る移動局
の動作例を説明するための図である。図では、２つの基
地局からそれぞれ、ＢＣＤＥＦＧ、および、ＡＣＧＨＪ
Ｋという周辺基地局情報を取得した場合について示して
いる。本動作例では、移動局はとまり木チャネルの受信
レベルにより重み付けを行う。図では左側の周辺基地局
リストを通知するとまり木チャネルの方が弱く受信され
た場合の例について示している。左側の周辺基地局リス
トに対して得点２点、右側の周辺基地局リストに対して
得点５点を仮定している。得点の与え方には様々な方法
が考えられるが、どんな方法を採るとしても、とまり木
チャネルの受信レベルが高いものに対して高い得点を、
受信レベルの低いものに対して低い得点を与えるように
構成する限りにおいて、同様の効果が得られる。同図で
は、各要素について得点を合計している。ＣおよびＧに
ついては、双方のリストに現れているため、得点が２回
加算され７点となっている。その他については、レベル
に応じた得点一個のみが加算される。FIG. 5 is a diagram for explaining an operation example of the mobile station according to the third embodiment of the present invention. In the figure, BCDEFG and ACGHJ from two base stations, respectively.
The figure shows a case where peripheral base station information K is acquired. In this operation example, the mobile station performs weighting based on the reception level of the perch channel. The figure shows an example of a case where the perch channel is weakly received when the peripheral base station list on the left side is notified. It is assumed that two points are scored for the peripheral base station list on the left and five points are scored for the peripheral base station list on the right. There are various ways to give a score, but no matter which method is used, a higher score is given for a higher perch channel reception level.
The same effect can be obtained as long as a low score is given to a low reception level. In the figure, the scores are totaled for each element. Since C and G appear in both lists, the score is added twice to obtain 7 points. For others, only one score according to the level is added.
【００４４】最終的に得られた得点に応じて、探索周期
を設定されている。また、図では、高優先度のものと低
優先度のものに固定的に探索頻度を与えるかのごとく説
明したが、これは本発明の実施形態を限定するものでは
ない。どのように探索頻度を与えるとしても、得られた
得点が大きいものに対して高頻度に、得られた得点が小
さいものに対して低頻度に探索頻度を設定する限りにお
いて同様の効果が得られる。The search cycle is set according to the finally obtained score. Further, in the figure, the description has been made as if the search frequency is fixedly assigned to the high priority and the low priority, but this does not limit the embodiment of the present invention. Regardless of how the search frequency is given, the same effect can be obtained as long as the search frequency is set to a high frequency for a large score and a low frequency to a small score. .
【００４５】本実施形態においても、周辺基地局情報に
含まれていた数が多い基地局の優先度を高く設定してい
るが、周辺基地局情報に含まれていた数を考慮しないよ
うにすることもできる。例えば、図５の例では各要素
（基地局）について得点を合計しているが、最高得点を
その基地局の得点とするようにすることもできる（その
場合、基地局ＣやＧの得点は７点ではなく、５点にな
る）。In this embodiment as well, the priority of the base station having a large number included in the peripheral base station information is set high, but the number included in the peripheral base station information is not considered. You can also. For example, in the example of FIG. 5, the scores are totaled for each element (base station), but the highest score may be used as the score of the base station (in this case, the scores of the base stations C and G are (5 points instead of 7 points).
【００４６】（第４実施形態）本発明の第４実施形態に
係る移動局の構成は、本発明の第１実施形態に係る移動
局の構成と同様である（図３参照）。本実施形態に係る
移動局は、周辺基地局情報においてすでに行われている
優先順位づけを考慮して、各基地局の探索の優先順位づ
けを行うことにより、周辺基地局探索の負荷を増大させ
ることなく、周辺基地局探索の精度を向上させることが
できる。本実施形態においても、周辺基地局情報に含ま
れていた数が多い基地局の優先度を高く設定している。
また、基地局の優先度を、該基地局が含まれていたとま
り木チャネルの受信レベルが高い場合には高く設定して
いる。(Fourth Embodiment) The configuration of the mobile station according to the fourth embodiment of the present invention is the same as the configuration of the mobile station according to the first embodiment of the present invention (see FIG. 3). The mobile station according to the present embodiment increases the load of the peripheral base station search by performing the search prioritization of each base station in consideration of the prioritization already performed in the peripheral base station information. Without this, it is possible to improve the accuracy of searching for a nearby base station. Also in the present embodiment, the priority of a base station having a large number included in the peripheral base station information is set high.
In addition, the priority of the base station is set high when the reception level of the perch channel containing the base station is high.
【００４７】図６は本発明の第４実施形態に係る移動局
の動作例を説明するための図である。図では、２つの基
地局からそれぞれ、ＤＦＣＢＥＧ、および、ＧＪＡＨＣ
Ｋという（優先）順位づけされた周辺基地局リストが通
知された場合について示している。リストの左側に現れ
る基地局ほど順位が高く高優先度とされるべき基地局で
あることを示しているものとする。図では、基礎得点と
して順位が最も高いものに対して６点、順位が最も低い
ものに対して１点というように、順位に応じて得点が与
えられている。さらに、先の例と同様にとまり木の受信
レベルに応じて得点が与えられている。図６では、先の
例と同様に左側の周辺基地局リストに対して２点、右側
の周辺基地局リストに対して５点が与えられているとし
ている。それぞれの要素に対して、基礎得点とレベルに
応じた得点を掛け合わせた上で得点を加算していく。例
えば、基地局Gに対する得点は、左側の周辺基地局リス
トから１×２＝２点が、右側の周辺基地局リストから６
×５＝３０点がそれぞれ加算され、結局トータルして３
２点の得点が加算される。他の要素についても同様に、
得点を加算し、得点の多い順に列べた上で探索頻度を設
定する。なお、図では、順位付けされたリストに対する
得点やレベルに応じた得点、あるいは探索周期は固定的
に定めるごとく説明したが、これは本発明の実施形態を
限定するものではない。どのような得点づけが行われる
としても、順位づけされたリストのうち順位の高いもの
に高い得点を、レベルの高い物に高い得点を、さらに
は、得点の高い物に対して高頻度の探索を行うように設
定する限りにおいて、同様の効果が得られる。FIG. 6 is a diagram for explaining an operation example of the mobile station according to the fourth embodiment of the present invention. In the figure, DFCBEG and GJAHC are respectively transmitted from two base stations.
The figure shows a case where a K (priority) prioritized peripheral base station list is notified. It is assumed that a base station that appears on the left side of the list has a higher rank and is a base station to be given a higher priority. In the figure, points are given according to the rank, such as six points for the highest rank and one point for the lowest rank as the basic score. Further, as in the previous example, a score is given according to the reception level of the perch. In FIG. 6, it is assumed that two points are given to the left neighboring base station list and five points are given to the right neighboring base station list as in the previous example. For each element, the score is added after multiplying the basic score by the score according to the level. For example, the score for the base station G is 1 × 2 = 2 points from the peripheral base station list on the left, and 6 points from the peripheral base station list on the right.
× 5 = 30 points are added to each other, resulting in a total of 3
Two points are added. Similarly for other elements,
The points are added, and the search frequency is set after arranging the points in descending order of the points. In the drawing, the score for the ranked list, the score according to the level, or the search cycle has been described as being fixed, but this does not limit the embodiment of the present invention. Regardless of what scoring is done, a high-frequency search for high-ranked items, high-level items for high-ranked items, and high-score items for ranked items The same effect can be obtained as long as the setting is made to perform.
【００４８】本実施形態においても、周辺基地局情報に
含まれていた数が多い基地局の優先度を高く設定してい
るが、周辺基地局情報に含まれていた数を考慮しないよ
うにすることもできる。また、基地局の優先度を、該基
地局が含まれていたとまり木チャネルの受信レベルが高
い場合には高く設定しているが、受信レベルを考慮しな
いようにすることもできる。すなわち、受信レベルにか
かわらず、同一の得点にするようにすることもできる。Also in the present embodiment, the priority of the base station having a large number included in the peripheral base station information is set high, but the number included in the peripheral base station information is not considered. You can also. In addition, the priority of the base station is set high when the reception level of the perch channel containing the base station is high, but the reception level may not be considered. That is, the same score can be obtained regardless of the reception level.
【００４９】（その他）上記実施形態では移動局を例に
説明したが、本発明は、例えば、基地局が送信したとま
り木チャネルを探索し、受信することにより通信の品質
を測定する品質測定装置に適用することもできる。品質
測定装置の構成および動作は、例えば上記実施形態で説
明した構成および動作と同様のものとすることができ
る。(Others) In the above embodiment, a mobile station has been described as an example. However, the present invention provides, for example, a quality measuring device that searches for and receives a perch channel transmitted by a base station to measure communication quality. It can also be applied. The configuration and operation of the quality measuring device can be the same as, for example, the configuration and operation described in the above embodiment.
【００５０】また、上記実施形態では、取得した周辺基
地局情報の和集合を作成し、該和集合に基づいてとまり
木チャネルの探索を行っているが、必ずしもそのような
和集合に基づいてとまり木チャネルの探索を行わなけれ
ばならないわけではない。例えば周辺基地局情報に含ま
れていた数が一定以上の基地局についての集合を作成
し、該集合に基づいてとまり木チャネルの探索を行って
もよい。また例えば、受信したとまり木チャネルのうち
受信レベルが一定以上のものに含まれる周辺基地局情報
の和集合を作成し、該和集合に基づいてとまり木チャネ
ルの探索を行ってもよい。さらに例えば、周辺基地局情
報においてすでに基地局の優先順位づけが行われている
場合に、その上位のもののみを対象として集合を作成
し、該集合に基づいてとまり木チャネルの探索を行って
もよい。In the above embodiment, the union of the acquired peripheral base station information is created, and the search for the perch channel is performed based on the union. However, the perch channel is not necessarily determined based on such union. You don't have to search for. For example, a set of base stations whose number included in the peripheral base station information is equal to or more than a certain value may be created, and a search for a perch channel may be performed based on the set. Further, for example, a union of the perimeter base station information included in the received perch channels having reception levels equal to or higher than a certain level may be created, and the perch channel may be searched based on the union. Further, for example, when the priorities of the base stations are already set in the peripheral base station information, a set may be created only for the higher-order ones, and the search for the perch channel may be performed based on the set. .
【００５１】[0051]
【発明の効果】以上説明したように、本発明によれば、
基地局が提供する周辺基地局情報を増大させることな
く、移動局等における周辺基地局探索の精度を向上させ
ることができる。As described above, according to the present invention,
It is possible to improve the accuracy of searching for a nearby base station in a mobile station or the like without increasing the nearby base station information provided by the base station.
【００５２】また、各基地局の探索に優先順位づけを行
うこと（例えば、周辺基地局情報に含まれていた数が多
い基地局の優先度を高く設定すること）により、周辺基
地局探索の負荷を増大させることなく、周辺基地局探索
の精度を向上させることができる。By prioritizing the search for each base station (for example, setting the priority of the base station having a large number included in the peripheral base station information to be high), the search for the peripheral base station is performed. It is possible to improve the accuracy of the peripheral base station search without increasing the load.
【図１】移動通信システムの例を示す図である。FIG. 1 is a diagram illustrating an example of a mobile communication system.
【図２】本発明の作用を説明するための概念図である。FIG. 2 is a conceptual diagram for explaining the operation of the present invention.
【図３】本発明の第１実施形態に係る移動局の構成例を
示す図である。FIG. 3 is a diagram illustrating a configuration example of a mobile station according to the first embodiment of the present invention.
【図４】本発明の第２実施形態に係る移動局の動作例を
説明するための図である。FIG. 4 is a diagram for explaining an operation example of a mobile station according to a second embodiment of the present invention.
【図５】本発明の第３実施形態に係る移動局の動作例を
説明するための図である。FIG. 5 is a diagram for explaining an operation example of a mobile station according to a third embodiment of the present invention.
【図６】本発明の第４実施形態に係る移動局の動作例を
説明するための図である。FIG. 6 is a diagram for explaining an operation example of a mobile station according to a fourth embodiment of the present invention.
１１１−１〜１１１−５ 基地局 １１２−１〜１１２−３ 移動局 ３２０ 移動局送受信装置 ３２２ ユーザインタフェース ３２４ アンテナ ３２６ 報知情報取得制御回路 ３２８ 共通制御回路 ３３０ セルサーチ制御回路 ３３２ 周辺基地局リスト編集回路 ３３４ メモリ ３３６ バス 111-1 to 111-5 Base station 112-1 to 112-3 Mobile station 320 Mobile station transmitting / receiving device 322 User interface 324 Antenna 326 Broadcast information acquisition control circuit 328 Common control circuit 330 Cell search control circuit 332 Peripheral base station list editing circuit 334 memory 336 bus
Claims (19)
索し、受信することにより通信または待ち受けを行う基
地局を決定するための周辺基地局探索方法であって、 周辺基地局情報を含むとまり木チャネルを探索し、受信
する探索受信ステップと、 前記探索受信手段により受信したとまり木チャネルから
周辺基地局情報を取得する取得ステップとを備え、前記
取得ステップは、前記探索受信ステップにより受信した
とまり木チャネルが複数ある場合には、該複数のとまり
木チャネルから周辺基地局情報を取得し、前記探索受信
ステップは、前記取得ステップにより取得した周辺基地
局情報に基づいてとまり木チャネルの探索を行うことを
特徴とする周辺基地局探索方法。A perimeter base station search method for searching for a perch channel transmitted by a base station and determining a base station that performs communication or standby by receiving the perch channel. A search and reception step of searching and receiving; and an obtaining step of obtaining peripheral base station information from the perch channel received by the search and reception means, wherein the obtaining step includes a plurality of perch channels received by the search and reception step. In this case, the peripheral base station information is obtained from the plurality of perch channels, and the search and reception step performs a search for a perch channel based on the peripheral base station information obtained in the obtaining step. Station search method.
あって、 前記周辺基地局情報の和集合を作成する作成ステップを
さらに備え、 前記探索受信ステップは、前記和集合に基づいてとまり
木チャネルの探索を行うことを特徴とする周辺基地局探
索方法。2. The peripheral base station search method according to claim 1, further comprising a creating step of creating a union of the peripheral base station information, wherein the search and reception step is a perch based on the union. A method for searching for a nearby base station, comprising searching for a channel.
あって、 前記和集合の個々の基地局について優先順位づけを行う
優先順位づけステップをさらに備え、 前記探索受信ステップは、優先度の高い基地局のとまり
木チャネルについては高頻度に探索を行い、優先度の低
い基地局のとまり木チャネルについては低頻度に探索を
行うことを特徴とする周辺基地局探索方法。3. The peripheral base station search method according to claim 2, further comprising a priority ordering step of prioritizing individual base stations of the union, wherein the search receiving step includes a priority order. A search is performed frequently for a perch channel of a base station with a high priority, and a search is performed with low frequency for a perch channel of a base station with a low priority.
あって、前記優先順位づけステップは、前記周辺基地局
情報に含まれていた数が多い基地局の優先度を高く設定
することを特徴とする周辺基地局探索方法。4. The peripheral base station searching method according to claim 3, wherein in the prioritizing step, the priority of a base station having a large number included in the peripheral base station information is set to be high. A method for searching for a base station in the vicinity.
索方法であって、前記優先順位づけステップは、基地局
の優先度を、該基地局が含まれていたとまり木チャネル
の前記探索受信ステップにおける受信レベルが高い場合
には高く設定することを特徴とする周辺基地局探索方
法。5. The peripheral base station search method according to claim 3, wherein the prioritizing step includes the step of determining the priority of the base station by performing the search and reception of the perch channel including the base station. A method for searching for a neighboring base station, wherein the setting is made higher when the reception level in the step is high.
辺基地局探索方法であって、 前記周辺基地局情報の個々の基地局は優先順位づけが行
われており、 前記優先順位づけステップは、前記周辺基地局情報にお
ける優先順位づけを考慮して、前記和集合における優先
順位づけを行うことを特徴とする周辺基地局探索方法。6. The peripheral base station searching method according to claim 3, wherein the individual base stations in the peripheral base station information are prioritized, and the priority ordering step is performed. The method according to claim 1, further comprising: prioritizing the union set in consideration of the prioritization in the peripheral base station information.
索し、受信することにより通信または待ち受けを行う基
地局を決定する移動局であって、 周辺基地局情報を含むとまり木チャネルを探索し、受信
する探索受信手段と、 前記探索受信手段により受信したとまり木チャネルから
周辺基地局情報を取得する取得手段と、 前記取得手段により取得した周辺基地局情報に基づいて
とまり木チャネルの探索を行うように前記探索受信手段
を制御する制御手段とを備え、前記取得手段は、前記探
索受信手段により受信したとまり木チャネルが複数ある
場合には、該複数のとまり木チャネルから周辺基地局情
報を取得することを特徴とする移動局。7. A mobile station that searches for and receives a perch channel transmitted by a base station to determine a base station that performs communication or standby, and searches for and receives a perch channel that includes peripheral base station information. Search receiving means, obtaining means for obtaining peripheral base station information from the perch channel received by the search receiving means, and searching and receiving so as to search for a perch channel based on the peripheral base station information obtained by the obtaining means. Control means for controlling means, wherein when there are a plurality of perch channels received by the search and reception means, the acquisition means acquires peripheral base station information from the plurality of perch channels. Bureau.
制御手段は、前記周辺基地局情報の和集合を作成し、前
記探索受信手段が前記和集合に基づいてとまり木チャネ
ルの探索を行うように前記探索受信手段を制御すること
を特徴とする移動局。8. The mobile station according to claim 7, wherein said control means creates a union of said neighboring base station information, and said search and reception means searches for a perch channel based on said union. A mobile station controlling the search and reception means to perform the search.
制御手段は、前記和集合の個々の基地局について優先順
位づけを行い、前記探索受信手段が、優先度の高い基地
局のとまり木チャネルについては高頻度に探索を行い、
優先度の低い基地局のとまり木チャネルについては低頻
度に探索を行うように前記探索受信手段を制御すること
を特徴とする移動局。9. The mobile station according to claim 8, wherein said control means assigns a priority to each base station of said union, and said search and reception means assigns a priority to a base station having a high priority. The perch channel is searched frequently,
A mobile station, wherein the search and reception means is controlled so as to search for a perch channel of a base station with low priority at low frequency.
記制御手段は、前記周辺基地局情報に含まれていた数が
多い基地局の優先度を高く設定することを特徴とする移
動局。10. The mobile station according to claim 9, wherein said control means sets a high priority to a base station having a large number included in said peripheral base station information. Bureau.
あって、前記制御手段は、基地局の優先度を、該基地局
が含まれていたとまり木チャネルの前記探索受信手段に
よる受信レベルが高い場合には高く設定することを特徴
とする移動局。11. The mobile station according to claim 9, wherein the control unit determines a priority of the base station and a reception level of the perch channel included in the base station by the search and reception unit. A mobile station characterized by setting it high when it is high.
の移動局であって、前記周辺基地局情報の個々の基地局
は優先順位づけが行われており、前記制御手段は、前記
周辺基地局情報における優先順位づけを考慮して、前記
和集合における優先順位づけを行うことを特徴とする移
動局。12. The mobile station according to claim 9, wherein the individual base stations in the peripheral base station information are prioritized, and the control unit controls the peripheral base station information. A mobile station, wherein priority is assigned to the union in consideration of priority assignment in station information.
の移動局と周辺基地局情報を含むとまり木チャネルを送
信する複数の基地局とを備えたことを特徴とする移動通
信システム。13. A mobile communication system, comprising: the mobile station according to claim 7; and a plurality of base stations that transmit a perch channel including peripheral base station information.
探索し、受信することにより通信の品質を測定する品質
測定装置であって、 周辺基地局情報を含むとまり木チャネルを探索し、受信
する探索受信手段と、 前記探索受信手段により受信したとまり木チャネルから
周辺基地局情報を取得する取得手段と、 前記取得手段により取得した周辺基地局情報に基づいて
とまり木チャネルの探索を行うように前記探索受信手段
を制御する制御手段とを備え、前記取得手段は、前記探
索受信手段により受信したとまり木チャネルが複数ある
場合には、該複数のとまり木チャネルから周辺基地局情
報を取得することを特徴とする品質測定装置。14. A quality measuring device for searching for a perch channel transmitted by a base station and measuring communication quality by receiving the perch channel, the search and reception means for searching for and receiving a perch channel including peripheral base station information. Acquiring means for acquiring peripheral base station information from the perch channel received by the search receiving means; controlling the search receiving means to search for a perch channel based on the peripheral base station information acquired by the acquiring means. A quality measuring device, comprising: when there are a plurality of perch channels received by the search receiving means, the acquiring means acquires peripheral base station information from the plurality of perch channels.
って、前記制御手段は、前記周辺基地局情報の和集合を
作成し、前記探索受信手段が前記和集合に基づいてとま
り木チャネルの探索を行うように前記探索受信手段を制
御することを特徴とする品質測定装置。15. The quality measuring apparatus according to claim 14, wherein the control unit creates a union of the peripheral base station information, and the search and reception unit searches for a perch channel based on the union. A quality measuring device for controlling the search and reception means so as to perform the following.
って、前記制御手段は、前記和集合の個々の基地局につ
いて優先順位づけを行い、前記探索受信手段が、優先度
の高い基地局のとまり木チャネルについては高頻度に探
索を行い、優先度の低い基地局のとまり木チャネルにつ
いては低頻度に探索を行うように前記探索受信手段を制
御することを特徴とする品質測定装置。16. The quality measuring apparatus according to claim 15, wherein said control means assigns a priority to each base station of said union, and said search and reception means sets said high priority base station. A quality measuring apparatus characterized in that the search / reception means is controlled so as to perform a high-frequency search for a perch channel and a low-frequency search for a low-priority base station perch channel.
って、前記制御手段は、前記周辺基地局情報に含まれて
いた数が多い基地局の優先度を高く設定することを特徴
とする品質測定装置。17. The quality measuring apparatus according to claim 16, wherein said control means sets a higher priority to a base station having a large number included in said peripheral base station information. Quality measuring device.
定装置であって、前記制御手段は、基地局の優先度を、
該基地局が含まれていたとまり木チャネルの前記探索受
信手段による受信レベルが高い場合には高く設定するこ
とを特徴とする品質測定装置。18. The quality measuring device according to claim 16, wherein the control unit determines a priority of the base station.
A quality measuring device, wherein when the reception level of the perch channel including the base station by the search and reception means is high, the quality level is set high.
載の品質測定装置であって、前記周辺基地局情報の個々
の基地局は優先順位づけが行われており、前記制御手段
は、前記周辺基地局情報における優先順位づけを考慮し
て、前記和集合における優先順位づけを行うことを特徴
とする品質測定装置。19. The quality measuring apparatus according to claim 16, wherein the individual base stations in the peripheral base station information are prioritized, and wherein the control unit controls the peripheral unit. A quality measuring device, wherein prioritization in the union is performed in consideration of prioritization in base station information.
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|---|---|---|---|
| JP22892399A JP3660835B2 (en) | 1999-08-12 | 1999-08-12 | Peripheral base station search method, mobile station, mobile communication system, and quality measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22892399A JP3660835B2 (en) | 1999-08-12 | 1999-08-12 | Peripheral base station search method, mobile station, mobile communication system, and quality measuring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001054156A true JP2001054156A (en) | 2001-02-23 |
| JP3660835B2 JP3660835B2 (en) | 2005-06-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003319439A (en) * | 2002-04-23 | 2003-11-07 | Denso Corp | Mobile communication terminal and computer program |
| US7336635B2 (en) | 2001-04-04 | 2008-02-26 | Ubi Netics Limited | Method and apparatus for fast W-CDMA acquisition |
| US7409215B2 (en) | 2003-02-07 | 2008-08-05 | Kabushiki Kaisha Toshiba | Mobile communication hand-off control system and unit |
| WO2012137295A1 (en) * | 2011-04-04 | 2012-10-11 | 京セラ株式会社 | Mobile communication method and wireless terminal |
-
1999
- 1999-08-12 JP JP22892399A patent/JP3660835B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7336635B2 (en) | 2001-04-04 | 2008-02-26 | Ubi Netics Limited | Method and apparatus for fast W-CDMA acquisition |
| US7379439B2 (en) | 2001-04-04 | 2008-05-27 | Ubinetics Limited | Method and apparatus for fast W-CDMA acquisition |
| US7391756B2 (en) | 2001-04-04 | 2008-06-24 | Ubi Netics Limited | Method and apparatus for fast W-CDMA acquisition |
| JP2003319439A (en) * | 2002-04-23 | 2003-11-07 | Denso Corp | Mobile communication terminal and computer program |
| US7409215B2 (en) | 2003-02-07 | 2008-08-05 | Kabushiki Kaisha Toshiba | Mobile communication hand-off control system and unit |
| WO2012137295A1 (en) * | 2011-04-04 | 2012-10-11 | 京セラ株式会社 | Mobile communication method and wireless terminal |
| JP5782504B2 (en) * | 2011-04-04 | 2015-09-24 | 京セラ株式会社 | Mobile communication method and wireless terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3660835B2 (en) | 2005-06-15 |
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