JPH0779284B2 - Dual polarization transmission method and dual polarization transmission device using the same - Google Patents
Dual polarization transmission method and dual polarization transmission device using the sameInfo
- Publication number
- JPH0779284B2 JPH0779284B2 JP1612493A JP1612493A JPH0779284B2 JP H0779284 B2 JPH0779284 B2 JP H0779284B2 JP 1612493 A JP1612493 A JP 1612493A JP 1612493 A JP1612493 A JP 1612493A JP H0779284 B2 JPH0779284 B2 JP H0779284B2
- Authority
- JP
- Japan
- Prior art keywords
- line
- working
- lines
- end side
- switching
- 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
Description
【0001】[0001]
【産業上の利用分野】本発明は、垂直及び水平の両偏波
を使用し、任意の現用回線に障害があった場合、その現
用回線を予備回線に切り換えて障害回線の救済を行うた
めの両偏波伝送方式及びそれを使用した両偏波装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses both vertical and horizontal polarized waves, and when there is a failure in any working line, the working line is switched to a protection line to repair the failed line. The present invention relates to a dual polarization transmission system and a dual polarization device using the same.
【0002】[0002]
【従来の技術】一般に、この種の両偏波伝送装置は、垂
直び水平の両偏波を使用し、各偏波に対応して複数の現
用無線回線(以下、単に現用回線と呼ぶ)を備えてお
り、この構成によって偏波性フェージングの影響を軽減
させている。2. Description of the Related Art Generally, this type of dual polarization transmission device uses both vertical and horizontal polarizations, and uses a plurality of working radio lines (hereinafter simply called working lines) corresponding to each polarization. This configuration reduces the influence of polarization fading.
【0003】しかしながら、両偏波伝送の場合、U・C
ASIRAGI et alの論文、14O MBIT
/S 32QAM CROSS−POLARIZED
CO−FREQUENCY TRIAL RESULT
S ICC92 (350.4−1−4−5/PP14
93−1497)で指摘されているように、両偏波同時
にフェージングを受ける確率が非常に高くなる。そこ
で、こうした場合には予備回線1つでは救済できないの
で、予備回線を2つ持たせることが有効となる。However, in the case of dual polarization transmission, U / C
ASIRAGI et al, 14O MBIT
/ S 32QAM CROSS-POLARIZED
CO-FREQUENCY TRIAL RESULT
SICC92 (350.4-1-4-5 / PP14
93-1497), the probability of fading both polarizations simultaneously becomes very high. Therefore, in such a case, it is effective to provide two backup lines because one backup line cannot be relieved.
【0004】このように、各偏波毎に1つの予備回線を
備える構成,即ち、2つの予備回線を用いた両偏波伝送
装置としては、図2に示す如く構成が類推される。As described above, as a configuration provided with one protection line for each polarization, that is, as a dual polarization transmission device using two protection lines, a structure as shown in FIG. 2 is inferred.
【0005】この両偏波伝送装置は、垂直及び水平偏波
に対応して2系統のディジタル無線装置を有しており、
各系統のディジタル無線装置は複数の現用回線の他に、
単一の予備無線回線(以下、単に予備回線と呼ぶ)を用
いて伝送を行う。ここで、現用回線の数をN[但し、N
は自然数で、ここではN=7の場合とする]で表わす
と、総数2×(1+N)の無線回線が使用されることに
なる。このように、両偏波伝送装置は、各偏波毎に独立
し、且つそれぞれ予備回線を備えた2つのディジタル無
線伝送装置によって構成される。This dual polarization transmission device has two systems of digital radio devices corresponding to vertical and horizontal polarizations.
In addition to multiple working lines, the digital radio equipment of each system
Transmission is performed using a single backup radio line (hereinafter, simply called a backup line). Here, the number of working lines is N [however, N
Is a natural number, and here it is assumed that N = 7], a total of 2 × (1 + N) wireless lines are used. In this way, both polarization transmission devices are composed of two digital radio transmission devices that are independent for each polarization and are each equipped with a protection line.
【0006】具体的に述べると、2つの独立したデジタ
ル無線装置は、送端側及び受端側にそれぞれ2N個の回
線切換器1〜2N,2N+1〜4Nを備える一方、各系
統毎に、単一の予備回線を有している。この構成では、
2系統の送端側には2N個の回線切換器1〜2Nが設け
られ、受端側には2N+1〜4Nが設けられており、こ
れら送端側及び受端側の各系統毎に独立に回線切換器を
切り換えることにより、フェージングによる影響を軽減
する構成が採用されると考えられる。More specifically, the two independent digital radio devices are provided with 2N line switchers 1 to 2N and 2N + 1 to 4N on the transmitting end side and the receiving end side, respectively, while each of them has a single line switching device. It has one spare line. With this configuration,
2N line switchers 1 to 2N are provided on the sending end side of the two systems, and 2N + 1 to 4N are provided on the receiving end side, and these sending end side and receiving end side lines are independently provided. It is considered that a configuration that reduces the influence of fading by switching the line switch will be adopted.
【0007】次に、図2及び図3を併せて参照し、上述
した両偏波伝送について、より具体的に説明する。因み
に、図3は図2に示す両偏波伝送装置に使用される無線
周波数配置を示している。この無線周波数配置では、水
平偏波のパイロット信号をPROT、垂直偏波のそれを
PROT´として表わし、且つ、水平偏波における現用
回線の信号をREG1〜7、垂直偏波の信号をREG1
´〜7´として示している。Next, referring to FIGS. 2 and 3 together, the above-mentioned dual polarization transmission will be described more specifically. Incidentally, FIG. 3 shows a radio frequency arrangement used in the dual polarization transmission device shown in FIG. In this radio frequency arrangement, the horizontally polarized pilot signal is represented as PROT and the vertically polarized signal is represented as PROT ', and the working line signals in the horizontally polarized wave are REG1 to 7, and the vertically polarized signal is REG1.
It is shown as'-7 '.
【0008】両偏波伝送装置は、図2に示す如く、2つ
の偏波に対応してそれぞれディジタル無線伝送装置を備
え、これら2つの伝送装置の受端側には、前述した回線
切換器2N+1〜3N,3N+1〜4Nの他に、これら
回線切換器に対応する回線のおける回線品質を監視し、
監視の結果、劣化状態の回線に対して回線警報を検出す
る回線警報検出器1´〜2N´が備えられている。As shown in FIG. 2, both polarization transmission devices are provided with digital radio transmission devices corresponding to the two polarizations, respectively, and the line switch 2N + 1 described above is provided at the receiving end of these two transmission devices. ~ 3N, 3N + 1 ~ 4N, in addition to monitoring the line quality in the line corresponding to these line switch,
As a result of the monitoring, line alarm detectors 1 ′ to 2N ′ that detect a line alarm for a line in a deteriorated state are provided.
【0009】又、回線警報検出器1´〜2N´のうち、
一方のデジタル無線装置に関する回線警報検出器1´〜
N´は回線切換情報発生器106に送信でき、他方のデ
ジタル無線装置に関する回線警報検出器N´+1〜2N
´は回線切換情報発生器106´に送信できるように構
成されている。Of the line alarm detectors 1'-2N ',
Line alarm detector 1'for one digital wireless device
N'can be transmitted to the line switching information generator 106 and the line alarm detectors N '+ 1 to 2N relating to the other digital radio device.
'Is configured to be transmitted to the line switching information generator 106'.
【0010】一方、送端側には、回線切換器1〜N,N
+1〜2Nにそれぞれ切換制御信号を送信するための回
線切換制御装置105、105´が備えられている。On the other hand, on the sending end side, the line switches 1 to N, N
Line switching control devices 105 and 105 'for transmitting switching control signals to +1 to 2N are provided.
【0011】加えて、一方のデジタル無線装置における
回線切換器1〜N、2N+1〜3Nは、パイロット信号
発生器101により発生したパイロット信号を通信で
き、その通信結果はパイロット信号検出器103にて検
出される。又、他方のデジタル無線装置に関し、回線切
換器N+1〜2N、3N+1〜4Nはパイロット信号発
生器102により発生したパイロット信号を通信でき、
その通信結果はパイロット信号検出器104にて検出さ
れる。In addition, the line switches 1 to N, 2N + 1 to 3N in one of the digital radio devices can communicate the pilot signal generated by the pilot signal generator 101, and the communication result is detected by the pilot signal detector 103. To be done. Regarding the other digital radio equipment, the line switches N + 1 to 2N and 3N + 1 to 4N can communicate the pilot signal generated by the pilot signal generator 102,
The communication result is detected by pilot signal detector 104.
【0012】尚、図2に示す2つのデジタル無線装置
は、N=7であるものとして説明したが、便宜上、水平
及び垂直の偏波のうち、それぞれ同一偏波で各デジタル
無線装置を構成し、同一無線周波数の回線を同一回線番
号で示している。Although the two digital wireless devices shown in FIG. 2 have been described as N = 7, for the sake of convenience, each digital wireless device is configured with the same polarization of the horizontal and vertical polarizations. , The line of the same radio frequency is shown by the same line number.
【0013】次に、このディジタル無線装置における回
線切換の動作について簡単に説明する。但し、説明は一
方のデジタル無線装置(N=7で、回線切換器1〜N及
び2N+1〜3Nを含むもの)についてのみ行い、他方
のディジタル無線装置については、説明を省略する。初
期状態で全現用回線が正常な場合、送端側ではいずれの
現用回線も予備回線には切り換えられていないため、パ
イロット信号発生器101により発生したパイロット信
号を回線切換器1〜Nから回線切換器2N+1〜3Nへ
と送信する。この場合、受端側では、パイロット信号検
出器103によりパイロット信号を検出していずれの現
用回線も予備回線に切り換えられていないこと,即ち、
全現用回線が正常で予備回線も正常なことを判断する。
この後、回線切換制御装置105から図3に示すような
水平偏波REG1〜7の切換制御信号(CONT1〜
n)を回線切換器1〜Nへ送信する。Next, a line switching operation in this digital radio apparatus will be briefly described. However, the description will be given only for one digital wireless device (N = 7, including line switchers 1 to N and 2N + 1 to 3N), and description of the other digital wireless device will be omitted. When all working lines are normal in the initial state, none of the working lines is switched to the protection line on the sending end side, so that the pilot signal generated by the pilot signal generator 101 is switched from the line switches 1 to N. 2N + 1 to 3N. In this case, on the receiving end side, the pilot signal is detected by the pilot signal detector 103 and none of the working lines is switched to the protection line, that is,
Judge that all working lines are normal and standby lines are also normal.
After this, the switching control signals (CONT1 to CONT1) of the horizontally polarized waves REG1 to 7 as shown in FIG.
n) to the line switches 1 to N.
【0014】ここで、例えば、図4に示すようなフェー
ジング(媒質における時間変化による電界強度の異常)
が回線切換器2に接続された現用回線(REG2)に発
生し、当該回線にエラーが発生したものとする。この場
合、受端側の回線警報検出器2´がそのエラーを検出
し、エラー検出値が予め設定された閾値を越えると回線
警報(ALM2)を切換情報発生器106へ送信する。Here, for example, fading as shown in FIG. 4 (abnormality of electric field strength due to time change in medium)
Occurs on the working line (REG2) connected to the line switch 2 and an error occurs on the line. In this case, the line alarm detector 2'on the receiving end detects the error, and when the error detection value exceeds a preset threshold value, the line alarm (ALM2) is transmitted to the switching information generator 106.
【0015】切換情報発生器106はその回線警報(A
LM2)に基づいて回線切換情報を発生し、その回線切
換情報を送端側方向の無線回線を利用して送端側の回線
切換制御装置105に送信する。回線切換制御装置10
5は回線切換情報を受信すると、切換制御信号(CON
T2)を送信し、回線切換器2を動作させて現用回線
(REG2)を予備回線に切り換え、現用回線(REG
2)上の信号を予備回線に載せ代える。The switching information generator 106 has its line alarm (A
The line switching information is generated based on LM2), and the line switching information is transmitted to the line switching control device 105 on the sending end side using the wireless line in the sending end side direction. Line switching control device 10
5 receives the line switching information, the switching control signal (CON
T2), the line switch 2 is operated to switch the working line (REG2) to the protection line, and the working line (REG
2) Transfer the above signal to the protection line.
【0016】一方、受端側では、パイロット信号検出器
103がパイロット信号が無くなったこと,即ち、いず
れかの現用回線が送端側で切り換えられたことを検出す
る。この検出信号と受端側からの応答信号とを受信した
切換情報発生器106は、この現用回線(REG2)の
回線切換器2N+2に回線切換信号bを送信する。回線
切換器2N+2は、この回線切換信号bを受信するとそ
れぞれの信号の位相差を検出して一致したときに予備回
線側に切り換えて救済を行う。こうして、全動作が完了
する。尚、例えば現用回線2´(REG2´)側にフェ
ージングが発生した場合にも全く同一の動作により救済
が行われる。On the other hand, on the receiving end side, the pilot signal detector 103 detects that the pilot signal has disappeared, that is, that any working line has been switched on the transmitting end side. Upon receiving the detection signal and the response signal from the receiving end, the switching information generator 106 transmits the line switching signal b to the line switching device 2N + 2 of this working line (REG2). Upon receiving this line switching signal b, the line switching device 2N + 2 detects the phase difference between the signals and switches to the protection line side when the signals are in agreement, and rescues. In this way, all operations are completed. Note that, for example, even when fading occurs on the working line 2 '(REG2') side, relief is performed by exactly the same operation.
【0017】[0017]
【発明が解決しようとする課題】上述した両偏波伝送方
式の場合、全く独立した2つのディジタル無線装置に予
備回線を2つ持たせて、個々独立に、フェージングによ
る回線障害の救済対策を図っている。このように、独立
したディジタル無線装置に対して、個々独立に回線障害
対策を施した場合、全体の構成が複雑となってしまう。In the case of the above-mentioned dual polarization transmission system, two completely independent digital radio equipments are provided with two protection lines, respectively, so as to individually and independently take countermeasures against a line failure due to fading. ing. In this way, when the line fault countermeasures are individually applied to the independent digital wireless devices, the entire configuration becomes complicated.
【0018】又、2つのデジタル無線装置において、個
々独立に制御し、回線障害の救済対策を施した場合、冗
長な回線切換制御と回線切換情報とがそれぞれ必要な
為、周波数利用効率が悪くなるという問題がある。Further, when the two digital radio devices are individually controlled to take countermeasures against a line failure, redundant line switching control and line switching information are required respectively, resulting in poor frequency utilization efficiency. There is a problem.
【0019】本発明は、かかる問題点を解決すべくなさ
れたもので、その技術的課題は、簡易に両偏波伝送の周
波数利用効率を高め得る両偏波伝送方式及びそれを使用
した両偏波伝送装置を提供することにある。The present invention has been made to solve the above problems, and its technical problem is to provide a dual polarization transmission system and a dual polarization transmission system using the dual polarization transmission system which can easily improve the frequency utilization efficiency of the dual polarization transmission. It is to provide a wave transmission device.
【0020】[0020]
【課題を解決するための手段】本発明によれば、送端側
及び受端側を有し、送受端側間にそれぞれ複数の現用回
線及び予備回線から成る2系統の回線群を備え、両系統
には互いに異なる偏波を使用して信号を伝送する両偏波
伝送方式において、送端側では、2系統の現用回線のい
ずれか一方の回線の予備回線に対する回線切換情報に基
づいて、他系統の対応する現用回線を同時に予備回線に
切り換え、受端側では、2系統の複数の現用回線におけ
る回線品質を監視検出することによって劣化状態の回線
に関する回線警報が1系統の現用回線のいずれかから得
られると、該回線警報に基づいて1系統の当該現用回線
だけではなく、他系統の対応する現用回線をも予備回線
に切り換える両偏波伝送方式が得られる。According to the present invention, there are provided two line groups each having a transmitting end side and a receiving end side, and each of which has a plurality of working lines and protection lines between the transmitting and receiving end sides. In a dual-polarization transmission method in which signals are transmitted using different polarizations in the system, the transmission end side uses the line switching information for the protection line of either one of the two working lines The corresponding working line of the system is switched to the protection line at the same time, and on the receiving side, the line quality of the two working lines is monitored and detected, so that the line alarm related to the degraded line is one of the working lines. From the above, a dual polarization transmission system can be obtained in which not only one working line of one system but also the corresponding working line of another system is switched to the protection line based on the line alarm.
【0021】又、本発明によれば、送端側及び受端側の
間にそれぞれ複数の現用回線及び予備回線から成る2系
統の回線群を備え、両系統には互いに異なる偏波を使用
して信号を伝送する両偏波伝送装置において、送端側
は、2系統の現用回線に対応して設けられると共に、対
応する系統の現用回線を予備回線に切り換える複数の回
線切換器と、2系統の複数の回線切換器に接続され、1
系統における回線切換器に現用回線から予備回線への切
り換えの際、他系統の該当する現用回線を同時に予備回
線に切り換え制御する回線切換制御装置とを備え、受端
側は、2系統の現用回線に対応して設けられると共に、
複数の回線切換器に対するそれぞれの回線品質を監視検
出することによって得られる劣化状態の回線に関する回
線警報を出力する回線警報手段と、1系統の現用回線の
いずれかから回線警報を受けると、他系統の該当する現
用回線をも予備回線に切り換えることを指示する回線切
換情報を出力する回線切換情報発生手段とを備えた両偏
波伝送装置が得られる。Further, according to the present invention, a line group of two systems each including a plurality of working lines and protection lines is provided between the transmitting end side and the receiving end side, and different polarizations are used for both systems. In a dual-polarization transmission device that transmits a signal by transmitting a signal, the transmission end side is provided corresponding to two working lines, and a plurality of line switching devices that switch the working lines of the corresponding systems to protection lines and two lines Connected to multiple line switches in
The line switch in the system is equipped with a line switching control device that simultaneously switches the corresponding working line of the other system to the protection line when switching from the working line to the protection line, and the receiving end side has two working lines. It is provided corresponding to
A line alarm means for outputting a line alarm for a line in a deteriorated state obtained by monitoring and detecting the line quality of each of a plurality of line switches, and a line alarm from any one of the working lines when receiving a line alarm And a line switching information generating means for outputting line switching information for instructing to switch the corresponding working line to the protection line.
【0022】更に、本発明によれば、上記両偏波伝送装
置において、送端側の回線切換制御装置と受端側の回線
切換情報発生手段とは、互いに無線回線を通して接続さ
れた両偏波伝送装置が得られる。Further, according to the present invention, in the above-mentioned dual polarization transmission device, the line switching control device on the sending end side and the line switching information generating means on the receiving end side are both polarizations connected to each other through a wireless line. A transmission device is obtained.
【0023】[0023]
【作用】本発明に係る両偏波伝送装置では、2系統の予
備無線路を成す2つのデジタル無線装置を完全独立型と
せずに、2つのデジタル無線装置の相互間において、送
端側で回線を予備回線に切り換え制御する回線切換制御
装置と、受端側で回線切換情報を送端側に送信する切換
情報発生器とをそれぞれ共用させている。回線切換制御
装置は、送端側で1つの回線切換情報に基づいて複数の
回線切換器のうち、それぞれの偏波面における水平又は
垂直のいずれか一方に係る切換信号を生成することによ
って該当する回線を同時に予備回線に切り換える。切換
情報発生器は、受端側で複数の回線切換器に対応する回
線のそれぞれの回線品質を監視検出することによって得
られる劣化状態の回線に関する回線警報に基づいて1つ
の回線切換情報を生成し、この1つの回線切換情報を偏
波面における水平又は垂直のいずれか一方に係る無線回
線により送端側の回線切換制御装置に送信する。In the dual polarization transmission device according to the present invention, the two digital radio devices forming the two spare radio paths are not completely independent, and the two digital radio devices are connected to each other at the transmission end side. The line switching control device for switching control to the protection line and the switching information generator for transmitting the line switching information to the transmission side on the receiving side are shared. The line switching control device generates a switching signal relating to either horizontal or vertical in each polarization plane among a plurality of line switching devices on the transmission end side based on one line switching information. Switch to the protection line at the same time. The switching information generator generates one piece of line switching information based on a line alarm regarding a line in a degraded state obtained by monitoring and detecting the line quality of each line corresponding to a plurality of line switches on the receiving end side. The one line switching information is transmitted to the line switching control device on the sending end side through a radio line which is either horizontal or vertical in the plane of polarization.
【0024】[0024]
【実施例】以下に実施例を挙げ、本発明の両偏波伝送装
置について、図面を参照して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The dual polarization transmission apparatus of the present invention will be described in detail below with reference to the accompanying drawings.
【0025】最初に本発明の両偏波伝送装置に概要を簡
単に説明する。この両偏波伝送は、送端側及び受端側に
それぞれ2N個[但し、Nは自然数]の切換手段を備え
ており、2N個の切換手段はN個づつの2つの系統に分
けることができる。また、各系統には、それぞれN個の
現用回線が設けられており、且つ、各系統には、1つづ
つの予備回線が設けられている。この現用回線から予備
回線への切換は、各系統のN個の切換手段を切り換える
ことによって行われる。First, an outline of the dual polarization transmission device of the present invention will be briefly described. This both-polarized wave transmission is provided with 2N [where N is a natural number] switching means on each of the sending end side and the receiving end side, and the 2N switching means can be divided into two systems of N pieces each. it can. Further, each system is provided with N working lines, and each system is provided with one protection line. The switching from the working line to the protection line is performed by switching N switching means of each system.
【0026】送端側では1つの回線切換情報に基づいて
2N個の切換手段のうち、それぞれの偏波面における水
平又は垂直のいずれか一方に係る切換信号を生成するこ
とによって、2系統の該当する回線を同時に予備回線に
切り換える。又、受端側では2N個の切換手段に対応す
る回線のそれぞれの回線品質を監視検出することによっ
て劣化状態の回線に関する回線警報を得た後、この回線
警報に基づいて1つの回線切換情報を生成し、更にこの
1つの回線切換情報を偏波面における水平又は垂直のい
ずれか一方に係る無線回線により送端側に送信する。At the transmitting end, two switching systems are generated by generating switching signals for either the horizontal or the vertical in each polarization plane among the 2N switching means based on one line switching information. Switch the line to the protection line at the same time. Further, on the receiving end side, after detecting the line quality of each of the lines corresponding to the 2N switching means, a line alarm regarding a line in a deteriorated state is obtained, and then one line switching information is sent based on this line alarm. The information is generated, and this one line switching information is transmitted to the transmission end side by the radio line which is either horizontal or vertical in the plane of polarization.
【0027】図1は、この両偏波伝送を用いたデジタル
無線装置をブロック図により示したものである。図示さ
れた両偏波伝送装置は2つのデジタル無線装置を備え、
送端側及び受端側にそれぞれ2N個の回線切換器1〜2
N,2N+1〜4Nを備え、これら回線切換器には、2
系統の現用回線と、各系統毎に個々に設けられた予備回
線が収容されている。また、現用回線から予備回線への
切換はこれらの2N個ずつの回線切換器1〜2N、2N
+1〜4Nからそれぞれ2つの回線切換器を切り換える
ことによって行う。FIG. 1 is a block diagram showing a digital radio apparatus using this dual polarization transmission. The illustrated dual polarization transmission device comprises two digital radio devices,
2N line switches 1 and 2 on the sending end side and the receiving end side respectively
N, 2N + 1 to 4N are provided, and these line switching devices have 2
The working line of the system and the protection line individually provided for each system are accommodated. In addition, switching from the working line to the protection line is performed by each of these 2N line switchers 1 to 2N and 2N.
It is performed by switching two line switching devices from +1 to 4N.
【0028】ここで、受端側には、回線切換器2N+1
〜3N,3N+1〜4Nを含む回線に対するそれぞれの
回線品質を監視することによって劣化状態の回線に関す
る回線警報を検出する回線警報検出器1´〜2N´が備
えられている。更に、これらの回線警報検出器1´〜2
N´は、回線切換情報発生器106に回線警報を送信す
る。又、送端側には回線切換器1〜2Nにそれぞれ切換
制御信号を送信するための回線切換制御装置105が備
えられている。Here, the line switch 2N + 1 is provided on the receiving end side.
.About.3N, 3N + 1 to 4N, and line alarm detectors 1'to 2N 'are provided for detecting a line alarm for a line in a degraded state by monitoring the respective line qualities. Further, these line alarm detectors 1'-2
N ′ sends a line alarm to the line switching information generator 106. The transmission end side is provided with a line switching control device 105 for transmitting a switching control signal to each of the line switching devices 1 to 2N.
【0029】加えて、一方のディジタル無線装置におい
て、回線切換器1〜N,2N+1〜3Nはパイロット信
号発生器101により発生したパイロット信号を通信で
き、その通信結果はパイロット信号検出器103にて検
出される。又、他方のデジタル無線装置においては、回
線切換器N+1〜2N,3N+1〜4Nはパイロット信
号発生器102により発生したパイロット信号を通信で
き、その通信結果はパイロット信号検出器104にて検
出される。In addition, in one digital radio equipment, the line switches 1 to N and 2N + 1 to 3N can communicate the pilot signal generated by the pilot signal generator 101, and the communication result is detected by the pilot signal detector 103. To be done. In the other digital radio equipment, the line switches N + 1 to 2N and 3N + 1 to 4N can communicate the pilot signal generated by the pilot signal generator 102, and the communication result is detected by the pilot signal detector 104.
【0030】即ち、図1に示す2つのディジタル無線装
置も、図2に示したものと同様にN=7の場合に該当す
る。又、図1でも便宜上、水平及び垂直の偏波うち、そ
れぞれ同一偏波で各デジタル無線装置を構成し、図3と
同様に、同一無線周波数の回線を同一回線番号で示して
いる。That is, the two digital radio devices shown in FIG. 1 also correspond to the case of N = 7, as in the case shown in FIG. Also, in FIG. 1, for the sake of convenience, each digital radio apparatus is configured with the same polarization of the horizontal and vertical polarizations, and, as in FIG. 3, lines of the same radio frequency are indicated by the same line number.
【0031】このうち、送端側の回線切換制御装置10
5は、1つの回線切換情報に基づいて2N個の回線切換
器1〜2Nのうち、それぞれの偏波面における水平又は
垂直のいずれか一方に係る切換制御信号を生成する。こ
れにより、回線切換制御装置105は切換制御信号によ
り2N個の回線切換器1〜2Nのうちの該当する回線を
同時に予備回線に切り換え制御する。Of these, the line switching control device 10 on the sending end side
Reference numeral 5 generates a switching control signal for either the horizontal or the vertical in each polarization plane among the 2N line switching units 1 to 2N based on one line switching information. As a result, the line switching control device 105 controls the corresponding line of the 2N line switching units 1 to 2N to be simultaneously switched to the protection line by the switching control signal.
【0032】又、受端側の2N個の回線警報検出器1´
〜2N´は、2N個の回線切換器2N+1〜4Nに対応
する回線のそれぞれの回線品質を監視することによって
劣化状態の回線を検出し、回線警報を送信する。更に、
受端側の回線切換情報発生器106は、回線警報に基づ
いて1つの回線切換情報を生成し、この1つの回線切換
情報を偏波面における水平又は垂直のいずれか一方に係
る無線回線(その送信方向側)により送端側の回線切換
制御装置105に送信する。Further, 2N line alarm detectors 1'on the receiving end side
.About.2N 'detects a degraded line by monitoring the line quality of each of the lines corresponding to the 2N line switchers 2N + 1 to 4N, and sends a line alarm. Furthermore,
The line-switching information generator 106 on the receiving end side generates one line-switching information based on the line alarm, and outputs this one line-switching information to a wireless line (transmission thereof) related to either horizontal or vertical plane of polarization. (Direction side) to the line switching control device 105 on the sending end side.
【0033】これら2つのデジタル無線装置において、
回線切換制御装置105及び回線切換情報発生器106
は、デジタル無線装置の相互間にて共用される。In these two digital radios,
Line switching control device 105 and line switching information generator 106
Are shared between digital wireless devices.
【0034】次に、このデジタル無線装置における回線
切換の動作について説明する。但し、説明は両方のデジ
タル無線装置(N=7)に関するものを対象とする。
又、初期状態のパイロット信号の検出により予備回線の
状態を検出するまでの過程は、図2で説明した従来の装
置と同様であるのでその説明を省略する。Next, the line switching operation in this digital radio apparatus will be described. However, the description is directed to both digital wireless devices (N = 7).
The process of detecting the state of the protection line by detecting the pilot signal in the initial state is the same as that of the conventional apparatus described with reference to FIG.
【0035】ここで、図4に示すようなフェージングが
現用回線(REG2)に発生した場合を想定する。現用
回線(REG2)にフェージングが発生すると、上述し
た参考論文に説明されているように、異なる偏波を用い
た現用回線(REG2´)にも、非常に高い確率でフェ
ージングが発生する。したがって、回線警報検出器2,
N+2´のいずれかより回線警報(ALM2又はALM
2´)が送信されることになる。回線切換情報発生器1
06は、いずれか早い方の回線警報を受信すると、この
回線警報に基づいて発生した1つの回線切換情報を無線
回線の送信方向側より回線切換制御装置105に送信す
る。回線切換制御装置105は、この1つの回線切換情
報を受信すると、2つの切換制御信号(CONT2,2
´)を回線切換器2,N+2にそれぞれ送信する。これ
により、回線切換器2,3N+2を動作させて現用回線
(REG2,REG2´)の信号を予備回線に載せ代え
ることができる。Here, it is assumed that fading as shown in FIG. 4 occurs in the working line (REG2). When fading occurs in the working line (REG2), fading also occurs with a very high probability in the working line (REG2 ') using different polarizations, as described in the above-mentioned reference paper. Therefore, the line alarm detector 2,
Line alarm from either N + 2 '(ALM2 or ALM
2 ') will be transmitted. Line switching information generator 1
When receiving the earlier line alert, 06 transmits one line switching information generated based on this line alert to the line switching control device 105 from the transmission direction side of the wireless line. When the line switching control device 105 receives the one line switching information, the two line switching control signals (CONT2, 2).
′) Is transmitted to the line switch 2 and N + 2, respectively. As a result, the line switches 2, 3N + 2 can be operated to transfer the signals of the working lines (REG2, REG2 ') to the protection line.
【0036】この後は、図2で説明した場合と同様に、
受端側ではパイロット信号検出器103,104がパイ
ロット信号が無くなったこと,即ち、いずれの現用回線
(REG2,REG2´)も送端側で切り換えられたこ
とを検出する。この検出信号と受端側からの応答信号と
を受信した切換情報発生器106は、これらの現用回線
(REG2,REG2´)の回線切換器2N+2,3N
+2に対してそれぞれ回線切換信号bを送信する。回線
切換器2N+2,3N+2は、それぞれ回線切換信号b
を受信すると、各信号の位相差を検出して一致したとき
に予備回線側に切り換えて救済を行う。このようにし
て、全動作が完了する。After this, as in the case described with reference to FIG.
On the receiving end side, the pilot signal detectors 103 and 104 detect that the pilot signal has disappeared, that is, that both working lines (REG2, REG2 ') have been switched on the transmitting end side. The switching information generator 106, which has received this detection signal and the response signal from the receiving end side, uses the line switching devices 2N + 2, 3N of these working lines (REG2, REG2 ').
The line switching signal b is transmitted to +2 respectively. The line switching devices 2N + 2 and 3N + 2 are connected to the line switching signal b.
When the signal is received, the phase difference between the signals is detected, and when they match, the signal is switched to the protection line side to perform rescue. In this way, all operations are completed.
【0037】[0037]
【発明の効果】本発明の両偏波伝送方式及びそれを使用
した両偏波伝送装置によれば、2系統の予備無線路を成
す2つのデジタル無線装置の相互間において、送端側で
行う予備回線に対する回線切換制御と、受端側で送端側
に送信する回線切換情報とをそれぞれ1つの回線切換制
御装置,回線切換情報発生器で共用させ、回線切換情報
を一つの無線回線を利用して行っているので、周波数利
用効率が格段に向上する。又、この両偏波伝送を行うデ
ジタル無線装置は従来のものに比べて回線切換制御装置
と回線切換情報発生器とが1つずつ削減されるため、簡
素に構成される。According to the dual polarization transmission system of the present invention and the dual polarization transmission device using the dual polarization transmission system, the transmission is performed between two digital radio devices which form two backup radio paths. One line switching control device and one line switching information generator share the line switching control for the backup line and the line switching information transmitted from the receiving side to the sending side, and the line switching information is used by one wireless line. As a result, frequency utilization efficiency is significantly improved. In addition, the digital radio device for transmitting both polarizations has a simple structure because one line switching control device and one line switching information generator are reduced compared to the conventional one.
【図1】本発明の一実施例に係る両偏波伝送装置を示し
たブロック図である。FIG. 1 is a block diagram showing a dual polarization transmission device according to an embodiment of the present invention.
【図2】従来技術から類推できる両偏波伝送装置の構成
説明するためのブロック図である。FIG. 2 is a block diagram for explaining a configuration of a dual polarization transmission device that can be inferred from a conventional technique.
【図3】両偏波伝送に係る無線周波数配置の一例を示し
たものである。FIG. 3 shows an example of a radio frequency arrangement related to dual polarization transmission.
【図4】図3に示す無線周波数配置においてフェージン
グが生じた状態を示したものである。FIG. 4 shows a state in which fading occurs in the radio frequency arrangement shown in FIG.
1〜4N(N=7:1〜28) 回線切換器 1´〜2N´(N=7:1´〜14´) 回線警報検出
器 101,102 パイロット信号発生器 103,104 パイロット信号検出器 105,105´ 回線切換制御装置 106,106´ 回線切換情報発生器1-4N (N = 7: 1-28) Line switcher 1'-2N '(N = 7: 1'-14') Line alarm detector 101,102 Pilot signal generator 103,104 Pilot signal detector 105 , 105 'Line switching control device 106, 106' Line switching information generator
Claims (3)
間にそれぞれ複数の現用回線及び予備回線から成る2系
統の回線群を備え、両系統には互いに異なる偏波を使用
して信号を伝送する両偏波伝送方式において、前記送端
側では、前記2系統の現用回線のいずれか一方の回線の
予備回線に対する回線切換情報に基づいて、他系統の対
応する現用回線を同時に予備回線に切り換え、前記受端
側では、前記2系統の複数の現用回線における回線品質
を監視検出することによって劣化状態の回線に関する回
線警報が前記1系統の現用回線のいずれかから得られる
と、該回線警報に基づいて前記1系統の当該現用回線だ
けではなく、他系統の対応する現用回線をも予備回線に
切り換えることを特徴とする両偏波伝送方式。1. A transmission line side and a reception side, and two line groups each consisting of a plurality of working lines and protection lines are provided between the transmission and reception sides, and different polarizations are used for both lines. In the dual polarization transmission method for transmitting a signal by transmitting the signal, the transmission end side determines the corresponding working line of the other system based on the line switching information for the protection line of either one of the two systems of the working line. At the same time, the standby line is switched to, and at the receiving end, a line alarm relating to a line in a degraded state can be obtained from any one of the working lines by monitoring and detecting the line quality in the plurality of working lines of the two systems. A dual polarization transmission method characterized in that not only the working line of the one system, but also the corresponding working line of the other system is switched to the protection line based on the line alarm.
現用回線及び予備回線から成る2系統の回線群を備え、
両系統には互いに異なる偏波を使用して信号を伝送する
両偏波伝送装置において、前記送端側は、2系統の現用
回線に対応して設けられると共に、対応する系統の現用
回線を予備回線に切り換える複数の回線切換器と、前記
2系統の複数の回線切換器に接続され、1系統における
回線切換器に現用回線から予備回線への切り換えの際、
他系統の該当する現用回線を同時に予備回線に切り換え
制御する回線切換制御装置とを備え、前記受端側は、2
系統の現用回線に対応して設けられると共に、前記複数
の回線切換器に対するそれぞれの回線品質を監視検出す
ることによって得られる劣化状態の回線に関する回線警
報を出力する回線警報手段と、前記1系統の現用回線の
いずれかから回線警報を受けると、前記他系統の該当す
る現用回線をも予備回線に切り換えることを指示する回
線切換情報を出力する回線切換情報発生手段とを備えた
ことを特徴とする両偏波伝送装置。2. A line group of two lines each comprising a plurality of working lines and protection lines is provided between the sending end side and the receiving end side,
In a dual polarization transmission device that transmits signals using polarizations different from each other in the two systems, the transmission end side is provided corresponding to the two system working lines, and the corresponding system working lines are spared. A plurality of line switchers for switching to a line and a plurality of line switchers of the two systems are connected to the line switcher in one system when switching from the working line to the standby line,
And a line switching control device for simultaneously switching and controlling the corresponding working line of the other system to the protection line.
Line alarm means provided corresponding to the working line of the system and outputting a line alarm for the line in a deteriorated state obtained by monitoring and detecting the respective line qualities of the plurality of line switching devices; When a line alarm is received from any of the working lines, a line switching information generating means for outputting line switching information for instructing to switch the corresponding working line of the other system to the protection line is also provided. Dual polarization transmission device.
て、前記送端側の回線切換制御装置と前記受端側の回線
切換情報発生手段とは、互いに無線回線を通して接続さ
れていることを特徴とする両偏波伝送装置。3. The dual polarization transmission device according to claim 2, wherein the line switching control device on the sending end side and the line switching information generating means on the receiving end side are connected to each other through a wireless line. Characteristic dual polarization transmission device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1612493A JPH0779284B2 (en) | 1993-02-03 | 1993-02-03 | Dual polarization transmission method and dual polarization transmission device using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1612493A JPH0779284B2 (en) | 1993-02-03 | 1993-02-03 | Dual polarization transmission method and dual polarization transmission device using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06232787A JPH06232787A (en) | 1994-08-19 |
JPH0779284B2 true JPH0779284B2 (en) | 1995-08-23 |
Family
ID=11907764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1612493A Expired - Fee Related JPH0779284B2 (en) | 1993-02-03 | 1993-02-03 | Dual polarization transmission method and dual polarization transmission device using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0779284B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2682514B2 (en) * | 1995-06-28 | 1997-11-26 | 日本電気株式会社 | Receive hot standby system |
JP4561364B2 (en) | 2005-01-05 | 2010-10-13 | 日本電気株式会社 | Dual polarization receiver |
-
1993
- 1993-02-03 JP JP1612493A patent/JPH0779284B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH06232787A (en) | 1994-08-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS59169229A (en) | Duplex switch control system | |
JPH0779284B2 (en) | Dual polarization transmission method and dual polarization transmission device using the same | |
WO2004028023A1 (en) | Radio communication device and radio communication system using the same | |
JPH03243031A (en) | Line switching circuit | |
JP2616473B2 (en) | Standby switching system | |
JP2682514B2 (en) | Receive hot standby system | |
JP2788840B2 (en) | Wireless transmission system | |
JPS61134131A (en) | Wireless transmitting system | |
JPH03243032A (en) | Line switching circuit | |
JPH047619B2 (en) | ||
JP2621629B2 (en) | Digital wireless transmission system | |
JPH1141146A (en) | Radio communication equipment | |
JPH01274534A (en) | Transmission system for digital radio using polarized wave in common | |
JPS59219030A (en) | Sub-signal transmitting system | |
JPH0722989A (en) | Hot standby transmission/reception system | |
JP2550887B2 (en) | Line switching device | |
JPH05291982A (en) | Line switching system | |
JP3314920B2 (en) | Relay device | |
JP2001168772A (en) | Device and method for switching hot standby line | |
JPS6093832A (en) | Line switching system | |
JPH05259939A (en) | Mutual extension type circuit switching device | |
JPH10276120A (en) | Radio communication system having hot standby type transmission power control function | |
JPS63268318A (en) | Standby set changeover system | |
JPS59122029A (en) | Fault monitoring system | |
JPH0728241B2 (en) | 1: 1 standby hot standby communication device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960206 |
|
LAPS | Cancellation because of no payment of annual fees |