JP2845827B2 - Wireless base station synchronization method - Google Patents
Wireless base station synchronization methodInfo
- Publication number
- JP2845827B2 JP2845827B2 JP22537396A JP22537396A JP2845827B2 JP 2845827 B2 JP2845827 B2 JP 2845827B2 JP 22537396 A JP22537396 A JP 22537396A JP 22537396 A JP22537396 A JP 22537396A JP 2845827 B2 JP2845827 B2 JP 2845827B2
- Authority
- JP
- Japan
- Prior art keywords
- base station
- synchronization
- time slot
- control device
- signal
- 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
- 238000000034 method Methods 0.000 title claims description 11
- 238000004891 communication Methods 0.000 claims description 13
- 238000010295 mobile communication Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は１つの移動通信用基
地局制御装置と、この制御装置のまわりに存在する複数
の基地局無線装置で構成された移動通信システムにおい
て、基地局無線装置と基地局制御装置間の同期方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system comprising one base station controller for mobile communication and a plurality of base station radio apparatuses existing around the control apparatus. The present invention relates to a synchronization method between station controllers.
【０００２】[0002]
【従来の技術】従来、基地局制御装置と基地局無線装置
の間を接続している有線回線のタイムスロットを図２
（Ａ）の様に割り当てて使用していた。タイムスロット
の２番目（ＴＳ２）を同期信号用として割り当て、常に
そのタイムスロットに同期用のタイミングパターンを制
御装置側から送出していたため、制御装置と無線装置間
の通信用チャンネルには使用できなかった。2. Description of the Related Art Conventionally, a time slot of a wired line connecting a base station control device and a base station radio device is shown in FIG.
They were allocated and used as in (A). Since the second time slot (TS2) is allocated for the synchronization signal, and the timing pattern for synchronization is always sent to the time slot from the control device side, it cannot be used for the communication channel between the control device and the wireless device. Was.
【０００３】また、基地局無線装置は、その同期用タイ
ムスロットから同期パターンを抽出して、制御装置との
同期を取ると共に、常時その同期パターンの監視を行っ
ていた。The base station radio apparatus extracts a synchronization pattern from the synchronization time slot, synchronizes with the control apparatus, and constantly monitors the synchronization pattern.
【０００４】[0004]
【発明が解決しようとする課題】したがって、有線回線
上のタイムスロットの１つを常に同期信号用として使っ
ているため、そのタイムスロットは、他の用途に割り当
てる事ができず、タイムスロットの有効利用ができなか
った。Therefore, since one of the time slots on the wire line is always used for a synchronization signal, the time slot cannot be allocated to other uses, and the time slot is not used. Not available.
【０００５】[0005]
【課題を解決するための手段】本発明の無線基地局同期
方法は、同期信号用のパターンを送出し、送出するタイ
ムスロットを基地局に知らせる基地局制御装置と、前記
制御装置より知らされたタイムスロットから同期パター
ンを検出して制御装置との同期を取り、その同期タイミ
ングを記憶しておく基地局無線装置とから構成される移
動通信システムで、基地局無線装置は運用開始時に、基
地局制御装置から教えられたタイムスロットより同期パ
ターンを検出して、制御装置との同期を取り、その同期
タイミングを記憶しておく。基地局無線装置は記憶した
タイミングで、装置内のタイミングを作り出す。制御装
置は、基地局が同期確立できたことを確認して同期信号
の送出をやめ、そのタイムスロットを通信用として割り
当てると共に、通信用に割り当てた事を基地局に知らせ
る。こうすることで、常に同期信号用のパターン信号を
流す必要がなくなり、同期パターン信号を流していたタ
イムスロットを他の用途（例えば通信用）に使用する事
ができる。According to the radio base station synchronization method of the present invention, a base station control device for transmitting a pattern for a synchronization signal and informing a base station of a time slot to be transmitted, and a base station control device for informing the base station of the time slot to transmit. A mobile communication system comprising a base station radio apparatus for detecting a synchronization pattern from a time slot to synchronize with a control apparatus and storing the synchronization timing. A synchronization pattern is detected from a time slot taught by the control device, synchronization with the control device is obtained, and the synchronization timing is stored. The base station wireless device generates the timing in the device at the stored timing. The control device confirms that the base station has been successfully synchronized, stops transmitting the synchronization signal, allocates the time slot for communication, and notifies the base station that the time slot has been allocated for communication. By doing so, it is not necessary to always supply the pattern signal for the synchronization signal, and the time slot in which the synchronization pattern signal has been supplied can be used for another purpose (for example, communication).
【０００６】[0006]
【発明の実施の形態】本発明の実施の一形態について図
を用いて説明する。図１は本発明の実施の一形態におけ
るシステム構成図。図２（Ｂ）は同実施の一形態におけ
る基地局制御装置１と基地局無線装置２とを接続する
１．５Ｍ有線回線上のタイムスロットの割当を示す。図
３は同期タイミングパターンの検出方法。図４は基地局
無線装置２の運用開始時に、タイムスロットを同期信号
用に割り当ててから通信用に変更するまでの手順を示
す。図５は基地局無線装置２の運用中に同期信号を流す
ときの手順を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a system configuration diagram according to an embodiment of the present invention. FIG. 2B shows the allocation of time slots on a 1.5M wired line connecting the base station controller 1 and the base station radio apparatus 2 according to the embodiment. FIG. 3 shows a method of detecting a synchronization timing pattern. FIG. 4 shows a procedure from the time when the operation of the base station radio apparatus 2 is started until the time slot is allocated for the synchronization signal to the time slot is changed for the communication. FIG. 5 shows a procedure for transmitting a synchronization signal during operation of the base station radio apparatus 2.
【０００７】図１において、１は基地局無線装置２を制
御する基地局制御装置で、１１の同期信号を送出する手
段と１２のタイムスロットを基地局無線装置に教える手
段を有する。２は基地局無線装置で、２１の同期信号を
検出する手段と、２２の同期タイミングを記憶しておく
手段を有する。制御装置１と各無線装置２との間は、有
線回線３で接続される。In FIG. 1, reference numeral 1 denotes a base station controller for controlling the base station radio apparatus 2, which has means for transmitting 11 synchronization signals and means for informing the base station radio apparatus of 12 time slots. Reference numeral 2 denotes a base station wireless device, which has means for detecting 21 synchronization signals and means for storing 22 synchronization timings. The control device 1 and each wireless device 2 are connected by a wired line 3.
【０００８】基地局制御装置１は基地局無線装置２の運
用開始時に、無線装置２に対して、図１に示すように手
段１２よりあるタイムスロットに同期パターン信号を送
出する。制御装置１は図４に示すように、信号を送出し
ている有線回線上のタイムスロット番号を教えるととも
に、一定間隔でポーリングして無線装置２が同期を確立
したかを確認する。無線装置２は、制御装置１からの情
報によるタイムスロットで、同期パターン信号を検出す
る。図３に同期パターン信号の検出方法の一例を示す。
本例においては、制御装置１より知らされたタイムスロ
ットの６ビット目が”０”になる所を見つけ、次の１５
９フレームが連続して”１”になり、１６０フレーム目
に”０”、更に１５９回連続して”１”が来て、１６０
回目に”０”が検出できたとき同期信号とみなして、制
御装置１と無線装置２との同期確立となる。When the operation of the base station radio apparatus 2 is started, the base station controller 1 sends a synchronization pattern signal to the radio apparatus 2 in a certain time slot by means 12 as shown in FIG. As shown in FIG. 4, the control device 1 notifies the time slot number on the wired line transmitting the signal, and polls at regular intervals to confirm whether the wireless device 2 has established synchronization. The wireless device 2 detects a synchronization pattern signal in a time slot based on information from the control device 1. FIG. 3 shows an example of a method for detecting a synchronization pattern signal.
In the present example, a position where the sixth bit of the time slot notified from the control device 1 becomes "0" is found, and the next 15
Nine frames become "1" continuously, "0" appears at the 160th frame, and "1" comes 159 times in succession.
When "0" is detected the second time, it is regarded as a synchronization signal, and synchronization between the control device 1 and the wireless device 2 is established.
【０００９】図４に示すとおり、同期パターン信号を検
出し同期確立した無線装置２は、同期パターン信号を検
出したことを制御装置１に知らせ、制御装置１は同期パ
ターン信号の送出をやめる。同期パターン信号の送出を
やめた制御装置２は、同期パターン信号の送出に使用し
ていたタイムスロットを通信用チャンネルとして割り当
てる。そして通信用チャンネルに割り当てた事を無線装
置２に知らせ、それ以後通信用チャンネルとして使用す
る。As shown in FIG. 4, the wireless device 2 that has detected the synchronization pattern signal and established synchronization notifies the control device 1 that the synchronization pattern signal has been detected, and the control device 1 stops sending the synchronization pattern signal. The control device 2 that has stopped transmitting the synchronization pattern signal allocates the time slot used for transmitting the synchronization pattern signal as a communication channel. Then, the wireless device 2 is informed of the assignment to the communication channel, and thereafter used as the communication channel.
【００１０】また、無線装置２が運用中に制御装置１と
再び同期をとる必要が発生した場合、制御装置１はその
旨を無線装置２に知らせる。次に通信用チャンネルに割
り当てているスロットの１つを、同期パターン信号送出
用に割り当てて同期パターン信号を流すと共に、割り当
てたスロットを無線装置２に知らせる。無線装置２は制
御装置１から知らされたスロットに、上記で述べた手順
によって同期パターン信号の検出を行い、検出後は通信
用チャンネルとして再び割り当てる。図５にこの時の手
順を示す。When it is necessary to resynchronize with the control device 1 while the wireless device 2 is in operation, the control device 1 notifies the wireless device 2 to that effect. Next, one of the slots allocated to the communication channel is allocated for transmitting a synchronization pattern signal, a synchronization pattern signal is flown, and the allocated slot is notified to the wireless device 2. The wireless device 2 detects the synchronization pattern signal in the slot notified from the control device 1 by the above-described procedure, and after the detection, re-assigns it as a communication channel. FIG. 5 shows the procedure at this time.
【００１１】[0011]
【発明の効果】本発明によれば、有線回線上のタイムス
ロットの有効利用が図れる。その理由は、限られた数の
タイムスロットを複数の用途として使用できる事であ
る。これにより、使用するタイムスロットの数を減らす
ことができ、結果的にシステム構築の設備投資である回
線使用料の低減を図る事ができる。According to the present invention, time slots on a wired line can be effectively used. The reason is that a limited number of time slots can be used for multiple applications. As a result, the number of time slots to be used can be reduced, and as a result, a line usage fee, which is a capital investment for system construction, can be reduced.
【図１】本発明の実施の一形態におけるシステム構成
図。FIG. 1 is a system configuration diagram according to an embodiment of the present invention.
【図２】有線上のタイムスロットの割り当て例。FIG. 2 is an example of time slot assignment on a wire.
【図３】同期パターン検出方法の一例。FIG. 3 shows an example of a synchronization pattern detection method.
【図４】同期パターン検出シーケンス（運用開始時）。FIG. 4 shows a synchronization pattern detection sequence (at the start of operation).
【図５】同期パターン検出シーケンス（運用中）。FIG. 5 shows a synchronization pattern detection sequence (during operation).
１ 基地局制御装置 ２ 基地局無線装置 ３ 制御装置と無線装置とを接続する１．５Ｍ有線回
線 １１ 同期パターン信号送出手段 １２ 同期パターンを送出するタイムスロットを決定
する手段 ２１ 同期パターン信号検出手段 ２２ 同期タイミングを記憶する手段REFERENCE SIGNS LIST 1 base station control device 2 base station radio device 3 1.5 M wired line connecting control device and radio device 11 synchronization pattern signal transmission means 12 means for determining time slot for transmitting synchronization pattern 21 synchronization pattern signal detection means 22 Means for storing synchronization timing
Claims (2)
線装置のいずれかの間の有線回線上の同期信号により、
基地局無線装置の同期を取る移動通信システムにおい
て、基地局無線装置の運用開始時にのみ、基地局制御装
置から有線回線上の特定タイムスロットを使って同期信
号を送出して、同期が取れた後は、そのタイムスロット
を通信チャンネルとして使用することを特徴とする無線
基地局同期方法。1. A synchronization signal on a wired line between one base station control device and one of a plurality of base station wireless devices,
In a mobile communication system that synchronizes a base station radio device, a synchronization signal is transmitted from a base station controller using a specific time slot on a wired line only at the start of operation of the base station radio device, and synchronization is established. Is a method for synchronizing a radio base station, wherein the time slot is used as a communication channel.
線装置のいずれかの間で同期を取る必要がある時に、有
線回線上で通信用タイムスロットとしている特定のタイ
ムスロットに、同期信号を送出して同期を取った後、再
びそのタイムスロットを通信チャンネルとして使用する
ことを特徴とする請求項１記載の無線基地局同期方法。2. When a synchronization is required between one base station control device and one of a plurality of base station radio devices, a synchronization signal is transmitted to a specific time slot used as a communication time slot on a wired line. 2. The method according to claim 1, wherein the time slot is used again as a communication channel after synchronizing by transmitting the time slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22537396A JP2845827B2 (en) | 1996-08-27 | 1996-08-27 | Wireless base station synchronization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22537396A JP2845827B2 (en) | 1996-08-27 | 1996-08-27 | Wireless base station synchronization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1070760A JPH1070760A (en) | 1998-03-10 |
| JP2845827B2 true JP2845827B2 (en) | 1999-01-13 |
Family
ID=16828341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22537396A Expired - Fee Related JP2845827B2 (en) | 1996-08-27 | 1996-08-27 | Wireless base station synchronization method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2845827B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100551156B1 (en) * | 1998-12-30 | 2006-05-25 | 유티스타콤코리아 유한회사 | Automatic Compensation for Wired Link Transmission Delay Time in Code Division Multiple Access Systems |
-
1996
- 1996-08-27 JP JP22537396A patent/JP2845827B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1070760A (en) | 1998-03-10 |
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