JP2526499B2 - Base station equipment - Google Patents
Base station equipmentInfo
- Publication number
- JP2526499B2 JP2526499B2 JP18533993A JP18533993A JP2526499B2 JP 2526499 B2 JP2526499 B2 JP 2526499B2 JP 18533993 A JP18533993 A JP 18533993A JP 18533993 A JP18533993 A JP 18533993A JP 2526499 B2 JP2526499 B2 JP 2526499B2
- Authority
- JP
- Japan
- Prior art keywords
- mobile station
- base station
- station device
- transmission power
- station apparatus
- 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.)
- Expired - Fee Related
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は移動通信に利用する。特
に、送信電力の異なる移動局装置が用いられる場合の通
信ゾーン切換技術に関する。The present invention is used in mobile communications. In particular, it relates to a communication zone switching technique when mobile station devices having different transmission powers are used.
【０００２】[0002]
【従来の技術】従来例の基地局装置を図２を参照して説
明する。図２は従来例の基地局装置のブロック構成図で
ある。ここでは、説明をわかりやすくするために、基地
局装置の送信に関するブロック構成の記載は省略した。
受信部１は、移動局装置の上り無線信号を受信し、デー
タ復調および受信電界レベルの検出を行う。移動局在圏
判定部４は、受信部１が検出した受信電界レベル値を第
一の入力とし、閾値メモリ５に記憶されている特定の閾
値を第二の入力とし、その二つの入力を比較する。その
結果、受信電界レベルが閾値よりも小さいとき、その移
動局装置は自基地局装置の通信圏に非在圏であると判定
する。2. Description of the Related Art A conventional base station apparatus will be described with reference to FIG. FIG. 2 is a block diagram of a conventional base station device. Here, the description of the block configuration regarding the transmission of the base station apparatus is omitted for the sake of clarity.
The receiving unit 1 receives an uplink radio signal from the mobile station device, demodulates data, and detects a received electric field level. The moving localized area determination unit 4 uses the received electric field level value detected by the reception unit 1 as a first input, and the specific threshold value stored in the threshold value memory 5 as a second input, and compares the two inputs. To do. As a result, when the received electric field level is smaller than the threshold value, the mobile station device determines that it is out of the communication area of the base station device itself.
【０００３】自動車電話方式を例にとると、複数の無線
ゾーンとそのそれぞれの無線ゾーンを覆い、サービスエ
リアを構成する基地局装置が存在する。また、周波数の
有効利用のために、一定の距離の基地局装置間で同一の
周波数を使用している。Taking the car telephone system as an example, there is a base station device that covers a plurality of wireless zones and their respective wireless zones to form a service area. Moreover, in order to effectively use the frequency, the same frequency is used between the base station devices at a fixed distance.
【０００４】次に、無線ゾーンの構成を図３を参照して
説明する。図３は無線ゾーンの構成を示す図である。サ
ービスエリアは図３（ａ）に示すように、移動局装置８
とこの移動局装置８と通信を行う基地局装置６と、同一
の周波数を使用する基地局装置７とで構成されている。Next, the structure of the wireless zone will be described with reference to FIG. FIG. 3 is a diagram showing a configuration of a wireless zone. As shown in FIG. 3A, the service area is the mobile station device 8
And a base station device 6 that communicates with the mobile station device 8 and a base station device 7 that uses the same frequency.
【０００５】基地局装置６または７の無線ゾーンの範囲
は、図２に示した閾値メモリ５に記憶されている閾値の
値に依存する。閾値の設定が比較的大きい値であると、
上り無線ゾーン９が狭くなり、移動局装置８が通信不可
能な地域が増加する。また、閾値の設定が比較的小さい
値であると、上り無線ゾーン９が広がり、移動局装置８
が通信不可能な地域は減少するが、基地局装置６および
７間で干渉が発生しやすくなり、通信品質が劣化する。
このように、閾値メモリ５の閾値は移動通信方式におい
て重要なパラメータである。The radio zone range of the base station device 6 or 7 depends on the threshold value stored in the threshold memory 5 shown in FIG. If the threshold setting is a relatively large value,
The upstream radio zone 9 becomes narrow, and the area where the mobile station device 8 cannot communicate increases. Further, if the threshold value is set to a relatively small value, the upstream radio zone 9 expands and the mobile station device 8
However, the area where communication is impossible decreases, but interference easily occurs between the base station devices 6 and 7, and the communication quality deteriorates.
As described above, the threshold of the threshold memory 5 is an important parameter in the mobile communication system.
【０００６】[0006]
【発明が解決しようとする課題】従来例で説明した移動
通信方式における基地局装置は、移動局装置の送信電力
が一定値の場合には適している。しかし、最近ではさま
ざまな移動局装置が混在しているため、送信電力が異な
る移動局装置が同一の無線ゾーンに在圏するために発生
する問題がある。The base station device in the mobile communication system described in the conventional example is suitable when the transmission power of the mobile station device is a constant value. However, recently, since various mobile station devices are mixed, there is a problem that occurs when mobile station devices having different transmission powers are located in the same wireless zone.
【０００７】移動局装置８は送信電力Ｐ１であるとす
る。図３（ｂ）に示すように、基地局装置６と通信する
送信電力Ｐ２（Ｐ２＜Ｐ１）の移動局装置１０が存在す
ると、基地局装置６および７は、送信電力Ｐ１の移動局
装置８と通信するために設定された閾値Ｌ１を持ってい
る。移動局装置１０の上り信号が基地局装置６で受信さ
れ、閾値Ｌ１以上であると判定される移動局装置１０の
上り無線ゾーン１１は、図３（ｂ）に示す範囲となる。
すなわち、図３（ｂ）に示す斜線部分は、移動局装置１
０にとって、サービスエリア外となってしまう。It is assumed that the mobile station device 8 has transmission power P1. As shown in FIG. 3B, when there is a mobile station device 10 with transmission power P2 (P2 <P1) that communicates with the base station device 6, the base station devices 6 and 7 have the mobile station device 8 with transmission power P1. Has a threshold L1 set to communicate with. The uplink signal from the mobile station device 10 is received by the base station device 6, and the uplink radio zone 11 of the mobile station device 10 determined to be equal to or greater than the threshold L1 is in the range shown in FIG.
That is, the hatched portion shown in FIG.
0 is outside the service area.
【０００８】この問題を解決する手段として、基地局装
置６および７の受信感度を Ｐ１−Ｐ２ に相当する値まで改善し、基地局装置６の閾値Ｌ２を Ｌ２＜Ｌ１ Ｌ１−Ｌ２＝Ｐ１−Ｐ２ とすることが考えられる。しかし、この改善案は、同一
ゾーンに共存する移動局装置８を考慮していないため、
新たな問題が発生する。As a means for solving this problem, the receiving sensitivities of the base station devices 6 and 7 are improved to a value corresponding to P1-P2, and the threshold value L2 of the base station device 6 is set to L2 <L1 L1-L2 = P1-P2. It is possible to However, since this improvement plan does not consider the mobile station devices 8 coexisting in the same zone,
New problems arise.
【０００９】その問題点とは、図３（ｃ）に示すよう
に、基地局装置６の受け持つ移動局装置８の上り無線ゾ
ーン１５が広がり、移動局装置８と基地局装置７との距
離Ｄ２が図３（ａ）に示した距離Ｄ１に比較して短くな
り、基地局装置７で同一周波数干渉が発生し、通信品質
が劣化することである。The problem is that, as shown in FIG. 3 (c), the upstream radio zone 15 of the mobile station apparatus 8 which the base station apparatus 6 serves expands, and the distance D2 between the mobile station apparatus 8 and the base station apparatus 7 is increased. Is shorter than the distance D1 shown in FIG. 3A, the same frequency interference occurs in the base station device 7, and the communication quality deteriorates.
【００１０】本発明は、このような背景に行われたもの
であり、送信電力が異なる移動局装置を用いても上り無
線ゾーンの範囲に相違のない基地局装置を提供すること
を目的とする。The present invention has been made against such a background, and an object of the present invention is to provide a base station apparatus which does not differ in the range of an upstream radio zone even when mobile station apparatuses having different transmission powers are used. .
【００１１】[0011]
【課題を解決するための手段】本発明は、移動局装置か
らの無線信号を受信する受信部と、この受信部により受
信された前記無線信号の受信レベルとあらかじめ定めら
れた閾値とを比較して前記移動局装置の在圏状況を判定
する移動局在圏判定部とを含む基地局装置である。According to the present invention, a receiving section for receiving a radio signal from a mobile station device is compared with a reception level of the radio signal received by the receiving section and a predetermined threshold value. The mobile station apparatus includes a mobile local area determination unit that determines the location status of the mobile station apparatus.
【００１２】ここで、本発明の特徴とするところは、前
記移動局装置対応にそれぞれその送信電力情報を記憶す
る手段と、この記憶する手段の内容を参照して前記閾値
を対応する値に設定する手段とを備えたところにある。Here, the feature of the present invention is that the threshold value is set to a corresponding value by referring to the means for storing the transmission power information corresponding to the mobile station device and the contents of the storing means. And means for doing so.
【００１３】前記記憶する手段は、前記移動局装置の識
別番号対応にそれぞれその送信電力情報を記憶する手段
を備えることが望ましい。It is preferable that the means for storing has means for storing the transmission power information corresponding to the identification number of the mobile station device.
【００１４】前記判定する手段は、前記移動局装置の位
置登録情報の到来毎にまたは発呼毎に判定する手段を備
えることが望ましい。It is preferable that the determining means includes a means for determining each time the location registration information of the mobile station device arrives or each time a call is made.
【００１５】[0015]
【作用】移動局装置対応にそれぞれの送信電力情報を基
地局装置が記憶している。例えば、移動局装置の識別番
号対応にそれぞれの送信電力情報を記憶しておけばよ
い。移動局装置は、他の通信端末装置と基地局装置を介
して通信を行う。また、他の通信端末装置との通信を行
っていないときでも、位置登録のため基地局装置との通
信を行う。このとき、基地局装置は、無線回線により接
続されている移動局装置の識別番号からその送信電力情
報を検索する。The base station device stores each transmission power information corresponding to the mobile station device. For example, each transmission power information may be stored corresponding to the identification number of the mobile station device. The mobile station device communicates with another communication terminal device via the base station device. Further, even when communication with another communication terminal device is not being performed, communication with the base station device is performed for position registration. At this time, the base station apparatus retrieves the transmission power information from the identification number of the mobile station apparatus connected by the wireless line.
【００１６】この送信電力情報にしたがって移動局の在
圏または非在圏を判定する閾値を選択して切替る。切替
の基準は、送信電力の小さい移動局装置であれば、閾値
を比較的小さい値に設定し、送信電力の大きい移動局装
置であれば、閾値を比較的大きい値に設定する。According to this transmission power information, a threshold value for determining whether the mobile station is in or out of service is selected and switched. As a switching criterion, the threshold value is set to a relatively small value if the mobile station device has low transmission power, and the threshold value is set to a relatively large value if the mobile station device has high transmission power.
【００１７】これにより、送信電力の違いによる上り無
線ゾーン範囲の相違はなくなり、さまざまな種類の移動
局装置が混在する移動無線通信方式に対応できる基地局
装置が実現できる。By this means, there is no difference in the upstream radio zone range due to the difference in transmission power, and it is possible to realize a base station apparatus that can support mobile radio communication systems in which various types of mobile station apparatuses coexist.
【００１８】[0018]
【実施例】本発明実施例の構成を図１を参照して説明す
る。図１は本発明実施例装置のブロック構成図である。
ここでは、説明をわかりやすくするために、基地局装置
の送信に関するブロック構成の記載は省略した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram of an apparatus according to the present invention.
Here, the description of the block configuration regarding the transmission of the base station apparatus is omitted for the sake of clarity.
【００１９】本発明は、移動局装置８または１０からの
無線信号を受信する受信部１と、この受信部１により受
信された前記無線信号の受信レベルとあらかじめ定めら
れた閾値とを比較して移動局装置８または１０の在圏状
況を判定する移動局在圏判定部４とを含む基地局装置で
ある。The present invention compares the reception unit 1 which receives a radio signal from the mobile station device 8 or 10 with the reception level of the radio signal received by the reception unit 1 and a predetermined threshold value. It is a base station apparatus including a mobile localized area determination unit 4 that determines the presence status of the mobile station apparatus 8 or 10.
【００２０】ここで、本発明の特徴とするところは、移
動局装置８および１０の識別番号対応にそれぞれその送
信電力情報を記憶する手段として移動局送信電力情報メ
モリ２１と、この移動局送信電力情報メモリ２１の内容
を参照して前記閾値を対応する値に設定する手段として
移動局送信電力判定部２０、閾値切替部３および閾値メ
モリ３０を備えたところにある。移動局送信電力判定部
２０は、移動局装置８または１０の位置登録情報の到来
毎にまたは発呼毎に送信電力を判定している。Here, the feature of the present invention is that the mobile station transmission power information memory 21 is provided as means for storing the transmission power information corresponding to the identification numbers of the mobile station devices 8 and 10, and the mobile station transmission power. The mobile station transmission power determination unit 20, the threshold value switching unit 3, and the threshold value memory 30 are provided as means for setting the threshold value to a corresponding value by referring to the contents of the information memory 21. The mobile station transmission power determination unit 20 determines the transmission power each time the location registration information of the mobile station device 8 or 10 arrives or every time a call is made.
【００２１】次に、本発明実施例の動作を説明する。受
信部１は、移動局装置８または１０の上り無線信号を受
信し、データ復調および受信電界レベルの検出を行う。
移動局送信電力判定部２０は、受信部１で復調されたデ
ータを入力とし、そのデータに含まれる識別番号を抽出
する。この識別番号と、移動局送信電力情報メモリ２１
の識別番号に対応する送信電力情報とが参照され、現在
通信中の移動局装置８または１０の送信電力が判定され
る。受信部１が移動局装置８または１０の無線信号を受
信するタイミングは、移動局装置８または１０の位置登
録時または発呼時であり、そのタイミング毎に送信電力
が判定される。Next, the operation of the embodiment of the present invention will be described. The receiving unit 1 receives the uplink radio signal from the mobile station device 8 or 10 and performs data demodulation and detection of the received electric field level.
The mobile station transmission power determination unit 20 receives the data demodulated by the reception unit 1 and extracts the identification number included in the data. This identification number and the mobile station transmission power information memory 21
The transmission power of the mobile station device 8 or 10 that is currently communicating is determined by referring to the transmission power information corresponding to the identification number of. The timing at which the receiver 1 receives the radio signal of the mobile station device 8 or 10 is at the time of location registration of the mobile station device 8 or 10 or at the time of calling, and the transmission power is determined at each timing.
【００２２】この判定された移動局装置８または１０の
送信電力は、閾値切替部３に入力される。閾値メモリ３
０には、複数の閾値Ｌ１、Ｌ２、…、Ｌｎが格納されて
おり、判定された送信電力に応じて最適な閾値Ｌ１、Ｌ
２、…、Ｌｎが閾値切替部３に設けられたテーブル３３
を参照して読出される。このテーブル３３には、さまざ
まな送信電力に対応した閾値情報が書込まれている。The determined transmission power of the mobile station device 8 or 10 is input to the threshold switching unit 3. Threshold memory 3
0 stores a plurality of threshold values L1, L2, ..., Ln, and the optimum threshold values L1 and L are set according to the determined transmission power.
2, ..., Ln is a table 33 provided in the threshold switching unit 3.
Is read out. Threshold information corresponding to various transmission powers is written in this table 33.
【００２３】移動局在圏判定部４では、この閾値Ｌ１、
Ｌ２、…、Ｌｎにもとづいて移動局装置８または１０の
在圏または非在圏が判定される。In the moving localized area determination unit 4, this threshold value L1,
The presence or absence of the mobile station device 8 or 10 is determined based on L2, ..., Ln.
【００２４】[0024]
【発明の効果】以上説明したように、本発明によれば、
送信電力が異なる移動局装置を用いても上り無線ゾーン
の範囲に相違のない無線通信方式が実現できる。As described above, according to the present invention,
Even if mobile station devices with different transmission powers are used, it is possible to realize a wireless communication system in which the range of the upstream wireless zone is the same.
【図１】本発明実施例装置のブロック構成図。FIG. 1 is a block configuration diagram of an apparatus according to an embodiment of the present invention.
【図２】従来例装置のブロック構成図。FIG. 2 is a block diagram of a conventional device.
【図３】無線ゾーンの構成を示す図。FIG. 3 is a diagram showing a configuration of a wireless zone.
１ 受信部 ３ 閾値切替部 ４ 移動局在圏判定部 ５、３０ 閾値メモリ ６、７ 基地局装置 ８、１０ 移動局装置 ９、１１、１４、１５ 上り無線ゾーン ２０ 移動局送信電力判定部 ２１ 移動局送信電力情報メモリ ３３ テーブル DESCRIPTION OF SYMBOLS 1 receiving part 3 threshold switching part 4 mobile localized area determination part 5, 30 threshold memory 6, 7 base station device 8, 10 mobile station device 9, 11, 14, 15 uplink radio zone 20 mobile station transmission power determination part 21 movement Station transmission power information memory 33 table
Claims (4)
信部と、この受信部により受信された前記無線信号の受
信レベルとあらかじめ定められた閾値とを比較して前記
移動局装置の在圏状況を判定する移動局在圏判定部とを
含む基地局装置において、 前記移動局装置対応にそれぞれその送信電力情報を記憶
する手段と、この記憶する手段の内容を参照して前記閾
値を対応する値に設定する手段とを備えたことを特徴と
する基地局装置。1. A reception unit for receiving a radio signal from a mobile station device and a reception level of the radio signal received by the reception unit are compared with a predetermined threshold value to locate the mobile station device. In a base station apparatus including a mobile localized area determination unit that determines a situation, a unit that stores the transmission power information corresponding to the mobile station device, and a threshold that corresponds to the content of the stored unit A base station device comprising means for setting a value.
識別番号対応にそれぞれその送信電力情報を記憶する手
段を備えた請求項１記載の基地局装置。2. The base station apparatus according to claim 1, wherein said storing means includes means for storing transmission power information of each mobile station apparatus in correspondence with an identification number.
位置登録情報の到来毎に判定する手段を備えた請求項１
記載の基地局装置。3. The determining means comprises means for determining each time the location registration information of the mobile station apparatus arrives.
The described base station device.
発呼毎に判定する手段を備えた請求項１記載の基地局装
置。4. The base station apparatus according to claim 1, wherein the determining means includes means for determining each call of the mobile station apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18533993A JP2526499B2 (en) | 1993-07-27 | 1993-07-27 | Base station equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18533993A JP2526499B2 (en) | 1993-07-27 | 1993-07-27 | Base station equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0746655A JPH0746655A (en) | 1995-02-14 |
| JP2526499B2 true JP2526499B2 (en) | 1996-08-21 |
Family
ID=16169073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18533993A Expired - Fee Related JP2526499B2 (en) | 1993-07-27 | 1993-07-27 | Base station equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2526499B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3655770B2 (en) | 1999-03-29 | 2005-06-02 | 日本電気株式会社 | Optical receiver circuit |
-
1993
- 1993-07-27 JP JP18533993A patent/JP2526499B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0746655A (en) | 1995-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |