JPH01109849A - Subscriber radio system - Google Patents
Subscriber radio systemInfo
- Publication number
- JPH01109849A JPH01109849A JP26620187A JP26620187A JPH01109849A JP H01109849 A JPH01109849 A JP H01109849A JP 26620187 A JP26620187 A JP 26620187A JP 26620187 A JP26620187 A JP 26620187A JP H01109849 A JPH01109849 A JP H01109849A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- radio
- terminal
- wireless
- radio transmitter
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 23
- 239000000284 extract Substances 0.000 abstract description 2
- 239000000969 carrier Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005577 local transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、各種電気通信事業者（例えば日本電信電話株
式会社）の提供する専用線サービスに企。[Detailed Description of the Invention] [Industrial Application Field] The present invention is intended for leased line services provided by various telecommunications carriers (for example, Nippon Telegraph and Telephone Corporation).
梁構内の簡易無線システムを付加した加入者無線システ
ムに関する。This invention relates to a subscriber radio system with a simple radio system in a beam premises.
［従来の技術とその問題点］
従来より企業内データ通信網の構築には、端末、変復調
装置（モデム）、構内交換電話（ＰＢＸ）、およびこれ
らの通信機器を接続する加入者伝送路が用いられていた
。また、構外の地域への中継伝送には、電気通信事業者
の持つデータ通信網や高速ディジタル伝送サービス等が
一般に利用されている。[Conventional technology and its problems] Traditionally, the construction of an in-house data communication network has involved terminals, modems, private branch exchanges (PBXs), and subscriber transmission lines that connect these communication devices. It was getting worse. Furthermore, data communication networks and high-speed digital transmission services owned by telecommunications carriers are generally used for relay transmission to areas outside the premises.
ところで、モデムを介して行なわれる構内のデータ伝送
は、モデムが比較的低速のメディアのため５時間がかか
るという欠点があった。これに対し、構内データ伝達に
ついても電気通信事業者から提供される高速ディジタル
伝送サービス等を利用して高速化することも考えられる
が、これでは回線使用料が高額となる。However, local data transmission via a modem has the disadvantage that it takes five hours because the modem is a relatively slow medium. On the other hand, it is conceivable to increase the speed of data transmission within the premises by using high-speed digital transmission services provided by telecommunications carriers, but this would result in high line usage charges.
また、高帯域の高速データ伝送手段である簡易無線シス
テムを使用することも考えられていたが、電気通信事業
者のシステムと別個に構築するため、両者の同期をとる
ことに技術的な難点があった。 ゛
本発明は上述した問題点に鑑みてなされたもので、電気
通信事業者のシステムと容易に同期し、かつ、経済的な
高速データ伝送を実現できる加入者無線システムの提供
を目的とする。Another idea was to use a simple wireless system, which is a high-bandwidth, high-speed data transmission method, but since it was built separately from the telecommunications carrier's system, there were technical difficulties in synchronizing the two. there were. The present invention has been made in view of the above-mentioned problems, and aims to provide a subscriber wireless system that can easily synchronize with a telecommunications carrier's system and realize economical high-speed data transmission.
［問題点の解決手段］
上記目的を達成するために本発明の加入者無線システム
は、電気通信事業者の提供する無線周波数を送受信する
第一の無線送受信装置と、簡易無線周波数を送受信する
第二の無線送受信装置と。[Means for solving problems] In order to achieve the above object, the subscriber wireless system of the present invention includes a first wireless transmitting/receiving device that transmits and receives a radio frequency provided by a telecommunications carrier, and a first wireless transmitting and receiving device that transmits and receives a simple radio frequency. Second wireless transmitter/receiver.
上記第一、第二の無線送受信装置に接続した信号分岐合
成装置と一方の出入力端子に上記信号分岐合成装置を接
続するとともに他方の出入力端子に端末を接続した回線
終端装置とを備え、上記第一及び第二の無線送受信装置
による送受信を同一の無線フレーム構成を共用して行な
い、当該無線フレーム構成の特定タイムスロットを上記
第二の無線送受信装置と対向する構内簡易無線システム
との通信用として使用し、残りのタイムスロットの一部
もしくは全部を上記第一の無線送受信装置を介して電気
通信事業者の局側無線装置との通信用として使用する構
成としである。comprising a signal branching/combining device connected to the first and second radio transmitting/receiving devices, and a line terminating device having one input/output terminal connected to the signal branching/combining device and the other input/output terminal connected to a terminal, Transmission and reception by the first and second wireless transmitting/receiving devices are performed by sharing the same wireless frame configuration, and a specific time slot of the wireless frame configuration is used for communication with a simple on-premises wireless system facing the second wireless transmitting/receiving device. The configuration is such that a part or all of the remaining time slots are used for communication with a station-side wireless device of a telecommunications carrier via the first wireless transmitting/receiving device.
［実施例］
以下、本発明の一実施例について図面を参照して説明す
る。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は、本実施例の加入者無線システムを示すブロッ
ク図、第２図は同システムで使用する無線フレームの構
成図である。FIG. 1 is a block diagram showing a subscriber radio system of this embodiment, and FIG. 2 is a configuration diagram of a radio frame used in the system.
第１図において、ｌは第一の無線送受信装置で、電気通
信事業者の局側無線装置７との間で送受信を行なう。２
は第二の無線送受信装置で簡易無線送受信装置１０との
間で送受信を行なう。簡易無線送受信装置１０は、企業
構内の各所に設置してあり、回線終端装置１１によるフ
レーム変換動作を介して端末１２との間のデータ転送を
行なっている。In FIG. 1, l denotes a first wireless transmitting/receiving device, which performs transmission and reception with the station-side wireless device 7 of the telecommunications carrier. 2
is a second wireless transmitting/receiving device that performs transmission and reception with the simple wireless transmitting/receiving device 10. The simple radio transmitting/receiving device 10 is installed at various locations within a company premises, and performs data transfer with a terminal 12 through a frame conversion operation by a line termination device 11.
３は分岐回路、４は合成回路であり、これらの回路によ
り信号分岐合成装置を形成している。各回路３，４とも
第一、第二の無線送受信装置ｌ。3 is a branching circuit, and 4 is a combining circuit, and these circuits form a signal branching and combining device. Each of the circuits 3 and 4 is a first and a second wireless transmitting/receiving device l.
２に接続されており、分岐回路３は送信信号を各無線送
受信装置１，２へ送出し、また合成回路４はいずれかの
無線送受信装置１または２が受信した信号を入力する。The branch circuit 3 sends out a transmission signal to each wireless transmitting/receiving device 1 or 2, and the combining circuit 4 inputs the signal received by either the wireless transmitting/receiving device 1 or 2.
５は回線終端装置で、一方の出入力端子に分岐回路３お
よび合成回路４を接続するとともに、他方の出入力端子
に端末６を接続し、端末６と第一、第二の無線送受信装
置１，２との間のフレーム交換を行なう。Reference numeral 5 denotes a line termination device, to which the branch circuit 3 and the combining circuit 4 are connected to one input/output terminal, and the terminal 6 is connected to the other input/output terminal, and the terminal 6 and the first and second wireless transmitting/receiving devices 1 are connected to each other. , 2.
本実施例システムで使用する無線フレームは、・電気通
信事業者の運用する無線システムのものを利用し、その
未使用タイムスロットを構内用に用いた構成となってい
る（第２図参照）、すなわち、電気通信事業者の局側無
線装置７が送出する信号に従属同期して運転される。The wireless frame used in the system of this embodiment is configured such that the wireless frame used in the wireless system operated by the telecommunications carrier is used, and the unused time slots are used for internal use (see Figure 2). That is, it is operated in slave synchronization with the signal sent out by the station-side wireless device 7 of the telecommunications carrier.
次に、動作を説明する。Next, the operation will be explained.
まず、端末６からの送信動作を説明する。端末６は、回
線終端装置５との間に定義されたインタフェース上で、
自己に割り当てられているタイムスロットに構内用デー
タと市外伝送用データを分けて送出する０回線終端装置
５は、端末６からのデータ２０１を構内用はＰｎ ’
（ｎ＝ １ 、２ 、３ ・・）、市外伝送用はＴｎ
（ｎ＝１ 、’２ 、３ ・・）に多毛化する。多重
化され無線フレーム構成として整えられた送信信号２０
２は１分岐回路３により二分岐され、一方の信号２０３
ａは第一の無線送受信装置ｌへ送られる。第一の無線送
受信装置ｌは電気通信事業者の提供する無線周波数を使
い無線区間１０１を介して局側無線装置７へ信号を送出
する。局側無線装置７では市外伝送用タイムスロットＴ
１〜Ｔｎのうち、契約されたタイムスロットのみを抜き
取って市外中継伝送する。First, the transmission operation from the terminal 6 will be explained. On the interface defined between the terminal 6 and the line termination device 5,
The line terminating device 5, which separately sends data for local transmission and data for long-distance transmission in the time slot assigned to itself, transmits data 201 from the terminal 6 to Pn' for local transmission.
(n = 1, 2, 3...), Tn for long distance transmission
(n=1, '2, 3...) becomes hairy. Transmission signal 20 multiplexed and arranged as a radio frame structure
2 is branched into two by the 1-branch circuit 3, and one signal 203
a is sent to the first wireless transceiver l. The first wireless transmitting/receiving device 1 sends a signal to the station-side wireless device 7 via the wireless section 101 using a wireless frequency provided by a telecommunications carrier. The station side wireless device 7 uses time slot T for long-distance transmission.
1 to Tn, only the contracted time slots are extracted and transmitted by long-distance relay.
また、他方の信号２０３ｂは第二の無線送受信装置２へ
送られる。第二の無線送受信装置２は、無線区間１０２
を介して簡易無線送受信装置１０へ信号を送出する。簡
易無線送受信装置ｌＯでは、ベースバンド信号を復調し
て第２図に示したフレーム構成の受信信号５０゛１を回
線終端装置１１に接続する。受信信号５０１は回線終端
装置１１によって端末フレーム５０２に変換され、端末
１２へ送られる。端末１２は、自己に割当てられた構内
用タイムスロットＰＩ−Ｐｎから信号を抽出する。Further, the other signal 203b is sent to the second wireless transmitting/receiving device 2. The second wireless transmitter/receiver 2 has a wireless section 102.
The signal is sent to the simple wireless transmitting/receiving device 10 via. The simple radio transmitting/receiving device IO demodulates the baseband signal and connects the received signal 50'1 having the frame structure shown in FIG. 2 to the line termination device 11. The received signal 501 is converted into a terminal frame 502 by the line termination device 11 and sent to the terminal 12. The terminal 12 extracts a signal from the local time slot PI-Pn assigned to the terminal 12.
端末１２からの送信は上述と逆の動作で行なわれる。す
なわち、端末送受信号４０１は、構内用タイムスロー／
） Ｐ ＋〜Ｐｎを用いて送出され、回線終端装置１
１によってフレーム変換され信号４０２となって簡易無
線送受信装置１０に入力される。そして、無線区間１０
２を介して第二の無線送受信装置２受信される。第二の
無線送受信装置２の復調出力３０１は、第２図に示した
フレーム構成をもつ。受信値３０１６は、第一の無線送
受信装置１の出力３０１ａとともに合成装ｆ１４に入力
され、３０１６側はＰ、 ＮＰ、を、３０１ａ側はＴＩ
−Ｔｎのタイムロットを選択され、信号３０２として出
力される。信号３０２は回線終端装置５によって端末フ
レーム３０３に変換されたのち、端末６へ入力される。Transmission from terminal 12 is performed in the reverse manner as described above. That is, the terminal transmission/reception signal 401 is a time slow/
) is transmitted using P + ~ Pn, and is sent out using
1, the frame is converted into a signal 402, and the signal is input to the simple radio transmitting/receiving device 10. And wireless section 10
2 is received by the second wireless transmitting/receiving device 2. The demodulated output 301 of the second radio transmitter/receiver 2 has the frame structure shown in FIG. The received value 3016 is input to the synthesis device f14 together with the output 301a of the first wireless transmitter/receiver 1, and the 3016 side receives P, NP, and the 301a side receives TI.
-Tn time slot is selected and output as signal 302. The signal 302 is converted into a terminal frame 303 by the line termination device 5 and then input to the terminal 6.
端末１２が市外伝送を行なう場合も、端末６において下
りＴｎ→上りＰｎへのタイムスロット換を行なうことに
より実現できる。Even when the terminal 12 performs long-distance transmission, this can be realized by changing the time slot from downlink Tn to uplink Pn at the terminal 6.
［発明の効果］
以上説明したように、本発明の加入者無線システムによ
れば、電気通信事業者の運用するシステムの未信用タイ
ムスロットを有効利用したシステムとなるので、同期を
とることも容易で、かつ、簡易無線システムを用いてい
るので、高速データ伝送を実現でき、しかも経済的であ
るという効果がある。[Effects of the Invention] As explained above, according to the subscriber radio system of the present invention, the system effectively utilizes the untrusted time slots of the system operated by telecommunications carriers, so synchronization is easy. Moreover, since a simple wireless system is used, high-speed data transmission can be realized and it is also economical.
第１図は本発明の実施例の加入者無線システムを示すブ
ロック図、第２図は同システムで使用する無線フレーム
の構成図である。
ｌ：第一の無線送受信装置
２：第二の無線送受信装置
３：分岐回路
４：合成回路
５：回線終端装置
６：端末
７：電気通信事業者の局側無線装置
１０：簡易無線送受信装置
ｌｌ：回線終端装置
１２：端末
代理人 弁理士 渡 辺 喜 平FIG. 1 is a block diagram showing a subscriber radio system according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a radio frame used in the system. 1: First wireless transmitting/receiving device 2: Second wireless transmitting/receiving device 3: Branch circuit 4: Combining circuit 5: Line termination device 6: Terminal 7: Telecommunication carrier's station side wireless device 10: Simple wireless transmitting/receiving device ll : Line terminating device 12: Terminal agent Patent attorney Kihei Watanabe
Claims (1)
の無線送受信装置と、簡易無線周波数を送受信する第二
の無線送受信装置と、上記第一、第二の無線送受信装置
に接続した信号分岐合成装置と、一方の出入力端子に上
記信号分岐合成装置を接続するとともに他方の出入力端
子に端末を接続した回線終端装置とを備え、上記第一及
び第二の無線送受信装置による送受信を、同一の無線フ
レーム構成を共用して行ない、当該無線フレーム構成の
特定タイムスロットを上記第二の無線送受信装置と対向
する構内簡易無線システムとの通信用として使用し、残
りのタイムスロットの一部もしくは全部を上記第一の無
線送受信装置を介して電気通信事業者の局側無線装置と
の通信用として使用することを特徴とした加入者無線シ
ステム。A first wireless transmitting/receiving device that transmits and receives radio frequencies provided by a telecommunications carrier, a second wireless transmitting/receiving device that transmits and receives simple radio frequencies, and a signal branching/combining device connected to the first and second wireless transmitting/receiving devices. and a line termination device having one input/output terminal connected to the signal branching/combining device and the other input/output terminal connected to a terminal, and transmitting and receiving by the first and second wireless transmitting/receiving devices in the same manner. A specific time slot of the radio frame structure is used for communication with the on-premise simple radio system facing the second radio transmitter/receiver, and a part or all of the remaining time slots are A subscriber radio system characterized in that the subscriber radio system is used for communication with a station-side radio device of a telecommunications carrier via the first radio transmitter/receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26620187A JPH01109849A (en) | 1987-10-23 | 1987-10-23 | Subscriber radio system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26620187A JPH01109849A (en) | 1987-10-23 | 1987-10-23 | Subscriber radio system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01109849A true JPH01109849A (en) | 1989-04-26 |
Family
ID=17427667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26620187A Pending JPH01109849A (en) | 1987-10-23 | 1987-10-23 | Subscriber radio system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01109849A (en) |
-
1987
- 1987-10-23 JP JP26620187A patent/JPH01109849A/en active Pending
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