JP2006128980A - Integrated relay system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an integrated relay system where a master station device of one relay system can perform centralized management of monitor information of a plurality of relay systems. <P>SOLUTION: The integrated relay system includes a plurality of relay systems and at least one hand-over slave station device 91 having slave station device functions of two out of the plurality of relay systems together. In each relay system, one master station device communicating a base station and at least one slave station device communicating with mobile terminals are connected for the purpose of relay between the base station and mobile terminals in a radio communication system. The hand-over slave station device 91 reports monitor information of the hand-over slave station device 91 and relay systems 42 to a master station device 51 of a relay system 41 out of the plurality of relay systems. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an integrated relay system including a plurality of relay systems that perform relay between a base station and a mobile terminal in a radio wave insensitive zone such as a tunnel of a wireless communication system.

  A conventional wireless communication system will be described. FIG. 4 is a block diagram illustrating an example of a configuration of a conventional wireless communication system. As shown in FIG. 4, the wireless communication system includes a base station (BTS) 1, a monitoring station (MON) 4, and a relay system 7. The relay system 7 includes a master station device (MU) 2 and at least one slave station device (SU) 6. The base station 1 and the master station device 2 are connected by wire or wireless. The master station device 2 and the monitoring station 4 are connected via a telephone line 3. A plurality of slave station devices 6 can be connected to the master station device 2, and the master station device 2 and the slave station device 6 are connected by an optical signal cable 5. The relay system 7 is installed for relaying between the base station 1 and a portable terminal (not shown) in a radio wave insensitive zone of the wireless communication system.

  FIG. 5 is a block diagram illustrating an example of a configuration of a master station device and a slave station device in a conventional relay system. As shown in FIG. 5, the master station device 2 includes a master station downlink RF signal amplifier (DLAMP-X) 11, a master station downlink electrical-optical converter (EO-X) 12, and a master station upstream optical-electricity. A conversion unit (OE-X) 13, a parent station uplink RF signal amplification unit (ULAMP-X) 14, and a parent station monitoring control unit (CONT-X) 15 are configured. The slave station device 6 includes a slave station downstream optical-electrical converter (OE-Y) 21, a slave station downstream RF signal amplifier (DLAMP-Y) 22, a duplexer (DUP-Y) 23, an antenna 24, A slave station uplink RF signal amplification unit (ULAMP-Y) 25, a slave station uplink electrical-optical conversion unit (EO-Y) 26, and a slave station monitoring control unit (CONT-Y) 27 are configured.

  First, the downlink operation in the conventional relay system will be described. The downlink RF signal is transmitted from the base station 1 to the master station device 2. The downlink RF signal input to the master station device 2 is amplified by the master station downlink RF signal amplifying unit 11, electro-optically converted by the master station downlink electrical-optical converter 12, and then transmitted by the optical signal cable 5. It is output to the station device 6. The downlink RF signal input to the slave station device 6 is optical-electrically converted by the slave station downlink optical-electrical converter 21, amplified by the slave station downlink RF signal amplifier 22, and then transmitted through the duplexer 23 to the antenna. 24 is transmitted as a wireless RF signal and received by the portable terminal.

  Next, the uplink operation in the conventional relay system will be described. Uplink information is transmitted as a wireless RF signal from the mobile terminal, and the RF signal received by the antenna 24 of the slave station device 6 is amplified by the slave station uplink RF signal amplifying unit 25 via the duplexer 23, and the slave station uplink The electrical-optical conversion unit 26 performs electrical-optical conversion, and outputs the optical signal cable 5 to the master station device 2. The uplink RF signal input to the master station device 2 is optical-electrically converted by the master station upstream optical-electrical converter 13, amplified by the master station upstream RF signal amplifier 14, and transmitted to the base station 1. The

  In the master station device 2, the master station monitoring control unit 15 performs monitoring and control of the master station device 2. In the slave station device 6, the slave station monitoring control unit 27 monitors and controls the slave station device 6. Further, the monitoring information and the control information are exchanged between the master station monitoring control unit 15 and the slave station monitoring control unit 27. The monitoring information and the control information are transmitted with the optical signal cable 5 after being superimposed on the RF signal using a frequency band different from the RF signal. Further, the master station monitoring control unit 15 transmits the monitoring information of the master station device 2 and the slave station device 6 to the monitoring station 4.

Patent document 1 is proposed as an example of such a relay system. According to the relay system of Patent Document 1, at least one slave master station device is connected to the master master station device, and slave station devices are connected to each master station device. The monitoring information of the slave master station device and the slave station devices under the slave master station device is notified to the master master station device. The master master station device notifies the monitoring station of monitoring information of all master station devices and slave station devices.
JP 2002-209014 A (page 2-4, FIG. 3)

  Here, a case where the relay system provides a service to an area where a radio wave insensitive zone continues over a long distance such as a tunnel will be described. Since it is not possible to provide services in all areas of the tunnel simply by installing an optical signal cable from one entrance of the tunnel and connecting a slave station device, it is not possible to provide services in the other entrance. May be installed.

  FIG. 6 is a block diagram showing an example of a configuration of a conventional relay system installed in plural. In FIG. 6, the same reference numerals as those in FIG. 4 denote the same or corresponding parts as those in FIG. 4, and the description thereof is omitted here. Here, for explanation, one of the two relay systems is a relay system 7A, and the other is a relay system 7B. The master station device in relay system 7A is referred to as master station device 2A, and the master station device in relay system 7B is referred to as master station device 2B.

  In this case, a handover from one relay system 7A to the other relay system 7B occurs in a portion where the service areas of the two relay systems overlap in the vicinity of the intermediate point of the tunnel. A hand that combines the functions of the slave station device connected to the master station device of the relay system 7A and the slave station device connected to the master station device of the relay system 7B into one so that this handover can be performed reliably. An over slave station device (HSU) 8 may be installed.

  FIG. 7 is a block diagram showing an example of the configuration of a conventional handover slave station device. As shown in FIG. 7, the hand-over slave station device 8 is one in which the slave station device function of the relay system 7A and the slave station device function of the relay system 7B are stored in one casing.

  The handover slave station device 8 first has a slave station downstream optical-electrical conversion unit (OE-A) 21A, a slave station downlink RF signal amplification unit (DLAMP-A) 22A, as slave station device functions of the relay system 7A, Duplexer (DUP-A) 23A, antenna 24A, slave station uplink RF signal amplifier (ULAMP-A) 25A, slave station uplink electrical-optical converter (EO-A) 26A, slave station monitoring controller ( CONT-A) 27A. Similarly, the handover slave station device 8 has the slave station downstream optical-electric conversion unit (OE-B) 21B and the slave station downlink RF signal amplification unit (DLAMP-B) 22B as the slave station device functions of the relay system 7B. A duplexer (DUP-B) 23B, an antenna 24B, a slave station uplink RF signal amplifier (ULAMP-B) 25B, a slave station uplink electrical-optical converter (EO-B) 26B, and a slave station monitoring control Part (CONT-B) 27B.

  The slave station downstream optical-electrical converter 21A and the slave station upstream electrical-optical converter 26A are connected to the master station device 2A of the relay system 7A via the optical signal cable 5. Further, the slave station downstream optical-electrical converter 21B and the slave station upstream electrical-optical converter 26B are connected to the master station device 2B of the relay system 7B via the optical signal cable 5. Since the slave station device functions of the relay system 7A and the relay system 7B perform the same operation as the slave station device 6 described above, a description thereof is omitted here.

  However, when a plurality of relay systems are installed as described above, the master station device 2A of the relay system 7A and the master station device 2B of the relay system 7B send monitoring information of the own station and subordinate slave station devices to the telephone line 3 Therefore, it is necessary to notify the monitoring station 4 via the network, leading to an increase in communication cost. Further, if only one master station device communicates with the monitoring station, a configuration in which a plurality of master station devices are all connected as in Patent Document 1 has been required, leading to an increase in hardware costs.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an integrated relay system in which monitoring information of a plurality of relay systems can be centrally managed by a master station device of one relay system. And

  In order to solve the above-described problem, an integrated relay system according to the present invention includes one master station device that communicates with the base station to perform relaying between the base station and the mobile terminal in a wireless communication system, Regarding a relay system in which at least one slave station device that communicates with a mobile terminal is connected, a plurality of relay systems and slave station device functions of two relay systems of the plurality of relay systems are combined into one An integrated relay system including at least one common slave station device, wherein the common slave station device is connected to a master station device of a predetermined relay system among the plurality of relay systems and to the predetermined relay station with the common slave station device. The monitoring information of a relay system other than the system is notified. Note that the common slave station apparatuses in this embodiment are the handover slave station apparatuses 91 and 92.

  According to the present invention, the master station device of one relay system notifies the monitoring station of the monitoring information of all the master station devices and slave station devices in the plurality of relay systems, so that each master station in the plurality of relay systems Compared with a configuration in which the apparatus notifies the monitoring information to the monitoring station, the communication cost can be greatly reduced. In addition, the monitoring information of other relay systems is notified to the master station device of one relay system via the common slave station device, thereby significantly increasing the hardware cost compared to a configuration in which all the master station devices are connected. Can be reduced.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of a configuration of a radio communication system according to the present embodiment. 1, the same reference numerals as those in FIG. 6 denote the same or corresponding parts as those in FIG. 6, and a description thereof will be omitted here. In the present embodiment, the relay system 41 instead of the relay system 7A, the relay system 42 instead of the relay system 7B, the master station device 51 instead of the master station device 2A, the master station device 52 instead of the master station device 2B, A handover slave station device 91 is provided instead of the handover slave station device 8. The integrated relay system according to the present embodiment includes relay systems 41 and 42 and a handover slave station device 91.

  FIG. 2 is a block diagram showing an example of the configuration of the handover slave station device in the integrated relay system according to the present embodiment. 2, the same reference numerals as those in FIG. 7 denote the same or corresponding parts as those in FIG. 7, and a description thereof will be omitted here. The master station devices 51 and 52 in the two relay systems 41 and 42 and the slave station devices thereunder exchange monitoring information and control information as usual.

  The handover slave station device 91 according to the present embodiment includes a slave station monitoring control unit (CONT-C) 30 instead of the conventional slave station monitoring control unit 27A and the slave station monitoring control unit 27B. The slave station monitoring control unit 30 is a slave station downstream optical-electrical converter 21A, slave station downlink RF signal amplifier 22A, slave station uplink RF signal amplifier 25A, and slave station uplink electricity that are slave station device functions of the relay system 41. -Connected to the light conversion unit 26A. Further, the slave station monitoring control unit 30 includes a slave station downlink optical-electrical conversion unit 21B, a slave station downlink RF signal amplification unit 22B, a slave station uplink RF signal amplification unit 25B, a slave station uplink, which are slave station device functions of the relay system 42. It is connected to the electro-optical converter 26B. With this configuration, the slave station monitoring control unit 30 monitors and controls both the slave station device function of the relay system 41 and the slave station device function of the relay system 42.

  The slave station monitoring control unit 30 notifies the master station device 51 of the relay system 41 of the monitoring information of both the slave station device function of the relay system 41 and the slave station device function of the relay system 42, thereby The master station device 51 can obtain monitoring information of all the slave station device functions in the handover slave station device 91.

  Further, the slave station monitoring control unit 30 also notifies the master station device 51 of the relay system 41 of the monitoring information of the master station device 52 of the relay system 42 and the normal slave station device 6 subordinate thereto. Therefore, the master station device 51 of the relay system 41 can obtain monitoring information of all the master station devices and slave station devices in the relay system 41 and the relay system 42 and can transmit to the monitoring station 4. Further, the master station device 52 of the relay system 42 does not need to communicate with the monitoring station 4.

  Compared with the configuration of the conventional handover slave station device, the portion integrated with the handover slave station device 91 according to the present embodiment is only the slave station monitoring control unit 30, but the antenna 24A and It goes without saying that possible configurations such as the antenna 24B, the duplexer 23A, and the duplexer 23B may be integrated. In addition, although communication between the master station device and the slave station device is performed using the optical signal cable, other communication media may be used.

  In this embodiment, an integrated relay system in which two relay systems 41 and 42 are integrated has been described. However, an integrated relay system in which three or more relay systems are integrated is used, and a handover slave station apparatus includes a plurality of relay systems. It is also possible to combine the functions of the slave station devices. FIG. 3 is a block diagram showing another example of the configuration of the radio communication system according to the present embodiment. In the example of FIG. 3, the integrated relay system includes three relay systems 41, 42, 43 and handover slave station devices 91, 92. The relay system 43 has the same configuration as the relay systems 41 and 42. The handover slave station device 92 has the same configuration as that of the handover slave station device 91 and includes a slave station device function of the relay system 42 and a slave station device function of the relay system 43.

  The monitoring information of the master station device 53 of the relay system 43 is notified to the master station device 52 of the relay system 42 via the handover slave station device 92. Further, the monitoring information of the master station device 52 of the relay system 42 and the master station device 53 of the relay system 43 is notified to the master station device 51 of the relay system 41 via the handover slave station device 91. Therefore, the master station device 51 of the relay system 41 centrally manages the monitoring information of all the relay systems 41, 42, and 43, and is finally transmitted to the monitoring station 4 by the master station device 51. In the example of FIG. 3, the master station device 51 of the relay system 41 centrally manages all the monitoring information and transmits it to the monitor station 4, but the master station device 52 of the relay system 42 or the parent of the relay system 43. The station device 53 may centrally manage all the monitoring information and transmit it to the monitoring station 4.

It is a block diagram which shows an example of a structure of the radio | wireless communications system which concerns on this Embodiment. It is a block diagram which shows an example of a structure of the hand-over slave station apparatus in the integrated relay system which concerns on this Embodiment. It is a block diagram which shows another example of a structure of the radio | wireless communications system which concerns on this Embodiment. It is a block diagram which shows an example of a structure of the conventional radio | wireless communications system. It is a block diagram which shows an example of a structure of a master station apparatus and a slave station apparatus. It is a block diagram which shows an example of a structure of the conventional relay system installed with two or more. It is a block diagram which shows an example of a structure of the conventional hand-over slave station apparatus.

Explanation of symbols

1 base station, 3 telephone line, 4 monitoring station, 41, 42, 43 relay system, 51, 52, 53 master station device, 5 optical signal cable, 6 slave station device, 91, 92 handover slave station device, 21A, 21B Slave station downstream optical-electric converter, 22A, 22B Slave station downstream RF signal amplifier, 23A, 23B duplexer, 24A, 24B antenna, 25A, 25B Slave station upstream RF signal amplifier, 26A, 26B Slave station upstream electrical— Optical conversion unit, 30 slave station monitoring control unit.

Claims (1)

In order to perform relaying between a base station and a mobile terminal in a wireless communication system, one master station device that communicates with the base station and at least one slave station device that communicates with the mobile terminal are connected Regarding the relay system,
An integrated relay system comprising at least one common slave station device that combines the plurality of relay systems and the slave station device functions of two relay systems among the plurality of relay systems,
The common slave station device notifies monitoring information of a relay system other than the common slave station device and a predetermined relay system to a master station device of a predetermined relay system among the plurality of relay systems. Relay system.

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