JP4581748B2 - Microwave radio communication system, microwave radio communication apparatus, and data transfer method used therefor - Google Patents

Description

  The present invention relates to a microwave radio communication system, a microwave radio communication device, a data transfer method used therefor, and a program therefor, and in particular, the microwave radio communication device is connected to the entire radio section and wired section in a ring configuration alternately. The present invention relates to a microwave radio communication system that constitutes a system.

  A case where a spanning tree protocol (STP) is implemented in a ring configuration of a conventional microwave radio communication apparatus will be described with reference to FIGS. 10 and 11. Here, in the microwave radio communication system, the entire system is configured by connecting the microwave radio communication devices in a ring configuration alternately between the radio section and the wired section.

  There are four port state transitions in the spanning tree protocol: a blocking state, a listening state, a learning state, and a forwarding state. In FIG. 10 and FIG. It shows a state where the system is stable before the power of the device is cut off or the wireless channel quality is not deteriorated.

  In this case, a part of the ring configuration is blocked by the spanning tree protocol port selection. For example, in the case of FIG. 10 and FIG. 11, if the microwave radio communication apparatus 4-8 is in a blocking state (port B in FIG. 10 and FIG. 11), when the port is in the blocking state, Transmission of a BPDU (Bridge Protocol Data Unit) and transfer of the received data packet to another port are not performed, and the received data packet is discarded.

  Devices other than the microwave radio communication device 4-8 store the source MAC (Media Access Control) address of the received data packet in the forwarding state, transfer and transmit the received data packet to other ports, In this case, BPDU transmission is also performed. It is assumed that the quality degradation of the radio channel between the microwave radio communication device 4-3 and the microwave radio communication device 4-4 occurs from such a stable state.

  A trap data packet generated by this phenomenon may be lost when it is transmitted from the microwave radio communication apparatus 4-4 to the microwave radio communication apparatus (route) 4-1. The loss of trap data packets can be reduced as much as possible if the port of the microwave radio communication apparatus is shifted to the blocking state in advance due to radio channel deterioration and the path is changed in the direction of good quality.

  In the case of a power failure in the microwave radio communication device 4-4, in the case of a ring configuration, the radio communication devices at both ends (adjacently connected) can raise a disconnect notification with a trap data packet. In the microwave radio communication apparatus 4-8 connected adjacently on one side, the notification of the trap data packet disappears because the port on the radio line side is in a blocking state.

  In the case of a ring configuration, a battery power source is provided in the microwave radio communication apparatus, and a new route is determined so that a trap data packet for power interruption can be reliably raised from the own microwave radio communication apparatus. It does not mean that the disconnection occurred, but it can distinguish that the power loss of the microwave radio communication device has occurred, and what happens to the microwave radio communication device on the integrated monitoring control terminal when the user performs recovery work The maintenance work can be carried out efficiently by knowing whether or not

  In addition, in order to prevent the consumption of a consumable element due to a limited capacity such as a battery, a method of selecting an optimum route by selecting a communication path with the minimum consumption level of the consumable element has been proposed. (For example, refer to Patent Document 1).

JP-A-9-149079

  In the conventional microwave radio communication system described above, trap data packet communication defined by SNMP (Simple Network Management Protocol) Internet management is used. In this communication, when a trap data packet is dropped, integration is performed. Since information cannot be acquired on the supervisory control terminal, it is necessary to provide a mechanism on the microwave radio communication apparatus side that prevents trap data packet communication from being lost as much as possible.

  Accordingly, an object of the present invention is to solve the above-described problems, and to prevent loss of trap data packets used in SNMP Internet management by changing the path of the spanning tree protocol STP as much as possible. The present invention provides an apparatus, a data transfer method used for the apparatus, and a program thereof.

A microwave radio communication system according to the present invention is a microwave radio communication system configured by connecting microwave radio communication devices in a ring configuration so that radio sections and wired sections are alternated,
A spanning tree protocol is implemented in the ring configuration part,
Each of the microwave radio communication apparatuses is a first detection means for detecting quality degradation of a radio line, a second detection means for detecting power-off of the own apparatus, and any of the first and second detection means And a control means for updating the path cost value of the own device to a high numerical value when the change is detected and changing the path of the spanning tree protocol.

A microwave radio communication apparatus according to the present invention is a microwave radio communication apparatus that is connected to one of adjacent apparatuses in a wireless section and connected to the other of the adjacent apparatuses in a wired section to form a ring configuration system. ,
A spanning tree protocol is implemented in the ring configuration part,
When a change is detected by any one of the first detecting means for detecting the deterioration of the quality of the wireless line, the second detecting means for detecting the power-off of the own apparatus, and the first and second detecting means, Control means for updating the path cost value of the apparatus to a high numerical value and changing the path of the spanning tree protocol.

A data transfer method according to the present invention is a data transfer method used in a microwave radio communication system in which microwave radio communication devices are connected in a ring configuration so that radio sections and wired sections are alternated,
A spanning tree protocol is implemented in the ring configuration part,
The microwave radio communication apparatus is one of a first detection process for detecting quality degradation of a radio line, a second detection process for detecting power-off of the own apparatus, and the first and second detection processes. When a change is detected in (1), the path cost value of the own apparatus is updated to a high numerical value to execute a control process for changing the path of the spanning tree protocol.

The data transfer method program according to the present invention is a data transfer method program used in a microwave radio communication system in which microwave radio communication apparatuses are connected in a ring configuration so that radio sections and wired sections are alternated. There,
A spanning tree protocol is implemented in the ring configuration part,
The computer detects a change in one of the first detection process for detecting the deterioration of the quality of the wireless line, the second detection process for detecting power-off of the own apparatus, and the first and second detection processes. In this case, the path cost value of the own device is updated to a high value and control processing for changing the path of the spanning tree protocol is executed.

  That is, the microwave radio communication system of the present invention is a system in which a microwave radio communication apparatus is formed by alternately connecting a radio section and a wired section in a ring configuration, and a spanning tree protocol (STP: Spanning Tree Protocol) is included in the ring configuration portion. ), And combined with wireless line quality degradation detection and power-off detection of a microwave radio communication device using a backup power source.

  As a result, in the microwave radio communication system of the present invention, a trap (Trap) data packet used in the SNMP (Simple Network Management Protocol) Internet management representative of TCP / IP (Transmission Control Protocol / Internet Protocol) network management. Loss can be prevented as much as possible by changing the path of the spanning tree protocol.

  The microwave radio communication device constantly monitors the deterioration of the quality of the radio line and the power cut-off of the microwave radio communication device, and if a change is detected, raises the path cost value to a higher value and A spanning tree protocol recalculation request notification is transmitted.

  Further, when the upper root microwave radio communication apparatus receives a spanning tree protocol recalculation request notification from the subordinate microwave radio communication apparatus, it transmits a BPDU (Bridge Protocol Data Unit) to all ports, and a normal spanning tree protocol. The above-mentioned function is used as it is, and the optimum route change is automatically executed on the ring configuration.

  As described above, in the microwave radio communication system of the present invention, the spanning tree protocol is implemented in the ring component in the system in which the microwave radio communication device is configured by alternately connecting the wireless section and the wired section in a ring configuration. By combining the detection of power deterioration of the wireless communication device using the wireless line quality deterioration and the backup power supply, the loss of trap data packets used in SNMP Internet management can be prevented as much as possible by changing the path of the spanning tree protocol. It becomes possible.

  Also, in the microwave radio communication system of the present invention, when the radio channel BER (Bit Error Rate) value is bad but the radio channel has not been disconnected, the channel quality is determined by recalculating the spanning tree protocol. Since the route is changed to a better route, it is possible to avoid the loss of the trap data packet, and it is possible to prevent the failure of data transmission due to the deterioration of the line quality before the route change.

  Furthermore, in the microwave radio communication system of the present invention, the trap data packet when the power of the microwave radio communication apparatus is turned off is also changed to an optimum path, so that it is possible to notify the higher-order integrated monitoring control terminal.

  On the other hand, in the microwave radio communication system of the present invention, the microwave radio communication device constantly monitors the deterioration of the quality of the radio channel and the power cut-off of the microwave radio communication device, and if a change is detected, the path cost value is increased to a high value. In addition, it is possible to transmit a spanning tree protocol recalculation request notification to a higher-order root microwave radio communication apparatus. An application is also conceivable in which the user can update the BER value and the value of the path cost corresponding to the power interruption of the microwave radio communication apparatus as a database from the integrated monitoring control terminal.

  When receiving a spanning tree protocol recalculation request notification from a subordinate microwave radio communication device, the upper root microwave radio communication device uses the normal spanning tree protocol function by sending BPDUs to all ports. It is possible to automatically execute an optimum route change on the ring network (Network).

  With the configuration and operation described below, the present invention provides an effect that the loss of trap data packets used in SNMP Internet management can be prevented as much as possible by changing the route of the STP.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a microwave radio communication apparatus according to an embodiment of the present invention. In FIG. 1, a microwave radio communication apparatus 1 according to an embodiment of the present invention includes a control unit 11, a radio line unit (data transmission / reception) 12, a wired line unit (data transmission / reception) 13, and a radio line quality check unit 14. , A supervisory control terminal interface unit 15, a BER (Bit Error Rate) value / wireless device power cut-off path cost database (hereinafter referred to as a database) 16, an STP (Spanning Tree Protocol) data storage unit 17, and a battery power unit 18. And an antenna 19, a wireless device power interruption detection unit 20, and an STP processing unit 21.

  The STP data storage unit 17 is a blocking state, a listening state, a learning state, and a forwarding state that are state transitions of each port (wired line port and wireless line port) of the microwave radio communication apparatus 1. ) State, the root wireless device ID (identification information) entered when the BPDU (Bridge Protocol Data Unit) from the outside is received, the transmission source wireless device ID, the corresponding path cost information, the own microwave wireless Information related to the STP function such as the path cost of the communication device is stored.

  The wireless device power-off detection unit 20 constantly monitors whether or not the microwave wireless communication device 1 has been powered off. When the power-off is detected, the battery power-off unit 18 is operated to stop the power failure. The operation of turning off the battery power is executed after waiting for a predetermined time (for example, 1 minute) during which the STP operation is stabilized while avoiding the state. The microwave radio communication apparatus 1 refers to the database 16 when the power cut is detected, takes out the path cost corresponding to the power cut of the radio apparatus, and activates the STP function. An STP recalculation request notification is transmitted to a communication device (not shown). The predetermined time until the battery power is turned off can be set by the user.

  The radio channel quality check unit 14 constantly monitors the channel quality on the radio channel by the microwave radio communication apparatus 1, and refers to the database 16 when the radio channel BER value is changed, corresponding to the BER value. In order to extract the path cost and activate the STP function, an STP recalculation request notification is transmitted to the root microwave radio communication apparatus. When the microwave radio communication apparatus 1 operates as a root microwave radio communication apparatus, the radio apparatus power interruption detection unit 20 and the radio channel quality check unit 14 are not operated, and each time triggered by reception of an STP recalculation request notification. In order to recalculate the path cost of the microwave radio communication apparatus, the STP processing unit 21 is operated to transmit BPDUs to all ports.

  The control unit 11 is a CPU (Central Processing Unit), for example, and controls the entire microwave radio communication apparatus 1 by executing a program of a storage medium (not shown). The supervisory control terminal interface unit 15 is connected only to the highest-order root microwave radio communication apparatus and is used when connecting the integral supervisory control terminal 2 that integrally supervises and controls all the microwave radio communication apparatuses.

  FIG. 2 is a block diagram showing a configuration example of a microwave radio communication system according to an embodiment of the present invention. In FIG. 2, the microwave radio communication apparatus is abbreviated as a radio apparatus.

  In the ring network (Network) A, the wireless devices 31-1, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1, 34 are started with the root wireless device 31-1. -2 are connected in a ring configuration so as to be alternately a wireless section and a wired section. Further, between the wireless devices 31-1, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 are auxiliary signals (SV lines) multiplexed on the main signal. In use, information is transferred to the integrated monitoring control terminal 2 via the route wireless device 31-1.

  Here, the communication between the integrated supervisory control terminal 2 and each of the wireless devices 31-1, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2, A typical network management protocol (SNMP) for network management of TCP / IP (Transmission Control Protocol / Internet Protocol) is used.

  In FIG. 2, reference numeral 31-1 represents a root wireless device, and only the leading root wireless device 31-1 is directly connected to the integrated monitoring control terminal 2. 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 represent wireless devices other than the route, 101 to 104 represent wireless sections, and 201 to 204 wired. It represents the section of the cable.

  In addition, the STP is implemented in the ring component of the ring network A, and the trap data packet disappears by combining the detection of the deterioration of the quality of the radio lines 101 to 104 and the detection of the power-off of the wireless device using the backup power source. Represents a system that prevents as much as possible.

  The part of the ring network A surrounded by a dotted line represents a processing unit in which the STP operates. The ring network A is an example of an installation location of a ring configuration system. One route wireless device 31-1 and wireless devices 31-2, 32-1, 32-2, 33-1, 33 other than a plurality of routes are provided. -2, 34-1 and 34-2, and this unit is defined as one ring network.

  In addition, the ring network B and the ring network C are configured in units of one ring network, the networks can be connected in units of the units, and the STP performs operation processing in units of units, and finally can be integrated into one network. The uppermost root wireless device 31-1 is connected to the integrated monitoring control terminal 2 and all wireless devices 31-2, 32-1, 32-2, 33-1, 33- using SNMP are connected. 2, 34-1 and 34-2 can be controlled.

  FIG. 3 is a diagram showing the structure of the database part of the BER value / path cost of the database 16 of FIG. In FIG. 3, the database portion 16a of the BER value / path cost of the database 16 has a BER range (“1.00E · 6 or more”, “1.00E · 5”, “1.00E · 4”, “1.00E · 3 or less ”) and path cost (radio side) (“ 1 (default value) ”,“ 10 ”,“ 80 ”,“ 100 ”).

  FIG. 4 is a diagram showing a configuration of a database portion of the power supply unit power-off path cost of the database 16 of FIG. In FIG. 4, the database portion 16 b of the power supply device power-off path cost of the database 16 includes the wireless device power state (“normal”, “power-off”) and the path cost (wireless side) (“1 (default value)”, “ 100 ").

  FIG. 5 is a diagram illustrating a configuration of a data packet of a setting message BPDU according to an embodiment of the present invention. In FIG. 5, the data packet 16c of the setting message BPDU includes a destination address, a source address, and a setting message (BPDU data).

  6 is a flowchart showing the STP processing of the root wireless device 31-1 of FIG. 2, FIG. 7 is a flowchart showing the BER value notification processing of the receiving side wireless device according to one embodiment of the present invention, and FIG. FIG. 9 is a flowchart showing a power-off notification process of a receiving-side radio apparatus according to an embodiment of the invention, and FIG. 9 is a flowchart showing a common process of the receiving-side radio apparatus according to an embodiment of the present invention. The operation of the microwave radio communication system according to one embodiment of the present invention will be described with reference to FIGS. Note that the radio apparatuses 31-1, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 shown in FIG. 2 are the microwave radio communication apparatuses 1 shown in FIG. The processing shown in FIGS. 6 to 9 is realized by the CPU executing a program in the control unit 11.

  When the root wireless device 31-1 receives an STP recalculation request notification from a device other than itself (step S1 in FIG. 6), the root wireless device 31-1 executes a process of transmitting BPDUs to all ports, which is a normal STP function operation, and ends (FIG. 6). 6 step S2). With this operation, the wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 under the ring network A start recalculating the path cost. The structure of the data packet 16c of the setting message BPDU in this case is as shown in FIG.

  The wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 constantly monitor the quality state of the wireless line and check whether there is a change in the BER value. Are periodically monitored (step S11 in FIG. 7). When there is a change in the BER value, the wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 have the trap data packet defined by SNMP. The notification is temporarily stopped (step S12 in FIG. 7). This temporary stop of the notification of the trap data packet is to prevent the trap data packet from being lost due to the deterioration of the radio channel quality.

  Next, the wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 refer to the database portion 16a of the BER value / path cost of the database 16, The path cost corresponding to the detected BER value is taken out, and the current value of the own path cost managed by the STP data storage unit 17 is updated (step S13 in FIG. 7).

  The wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 then send an STP recalculation request notification to the root wireless device 31-1 in that state. (Step S14 in FIG. 7), and the process ends. The transmission of the STP recalculation request notification is triggered by the reception of the STP recalculation request notification by the root wireless device 31-1 as subordinate wireless devices 31-2, 32-1, 32-2, 33-1, 33-2. , 34-1 and 34-2, the process of transmitting the BPDU is executed, so that the receiving side wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 , 34-2 re-calculates the path cost triggered by the reception of a new BPDU, thereby changing the position of the blocking state at a plurality of ports of the wireless device in the ring network A, and routing in the direction of good quality. Is to change.

  An example of the database portion 16a of the BER value / path cost of the database 16 is shown in FIG. In FIG. 3, for example, a BER value of “1.00E-6 or higher” has a path cost (wireless line side) of “1 (default value)”, and a BER value of “1.00E-5” has a path cost of “10”. ”And“ 1.00E-4 ”have a path cost of“ 80 ”, and BER values of“ 1.00E-3 and lower ”have a path cost of“ 100 ”. In a stable state, the default path cost is “1” for all ports, and the value of the port status in the STP is calculated using this value. The user can also set the contents of the database portion 16a of the BER value / path cost.

  The wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 constantly monitor the power-off of the own device, and the power-off of the own device has occurred. Is periodically monitored (step S21 in FIG. 8). When the wireless device 31-2, 32-1, 32-2, 33-1, 33-2, 34-1, and 34-2 is powered off, The notification is temporarily stopped (step S22 in FIG. 8). This temporary stop of the notification of the trap data packet is to prevent the trap data packet from being lost due to the power-off of the device itself.

  Next, the wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1, and 34-2 operate the battery power supply unit 18 so that the device cannot be operated. (Step S23 in FIG. 8), and an STP recalculation request notification is transmitted to the root wireless device 31-1 (step S24 in FIG. 8). Thereafter, the wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 wait for a predetermined time (for example, one minute) when the STP operation is stabilized. Then, the battery power is turned off (step S25 in FIG. 8).

  When the wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 transmit an STP recalculation request notification to the root wireless device 31-1, the database Referring to the database portion 16b of the power supply device power-off path cost of 16 power sources, the path cost corresponding to the power-off in the wireless power state is extracted, and the current value of the path cost of the own device managed by the STP data storage unit 17 is updated. In this state, an STP recalculation request notification is transmitted. The STP recalculation request notification is transmitted in response to reception by the root wireless device 31-1 as subordinate wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1. , 34-2 is transmitted to the receiving side wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2. In order to change the position of the blocking state at a plurality of ports of the wireless device in the ring network A and change the route in the direction of good quality by recalculating the path cost triggered by the reception of a new BPDU It is.

  FIG. 4 shows an example of the database portion 16b of the power supply device power-off path cost of the database 16. In FIG. 4, for example, when the power state of the wireless device is normal, the path cost (wireless line side) is 1 (default value), and when the power state of the wireless device is power off, the path cost is 100. In a stable state, the default path cost is “1” for all ports, and the STP state is calculated using that value. Note that the user can also set the contents of the database portion 16b of the power supply unit power-off path cost.

  The wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 constantly monitor whether or not the BPDU is received (FIG. 9). Step S31). When the wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1, and 34-2 receive a BPDU, whether a topology change possessed as an STP function has been detected If there is a change, if there is a port in the blocking state, the state is shifted to the listening state, and if there is no change, the blocking state is left as it is (step S33 in FIG. 9).

  However, in the present embodiment, when there is a wireless device having a blocking state, it is determined that there is topology detection by detecting the deterioration of the wireless line or the disconnection of the wireless device, and the port in the blocking state is shifted to the listening state. It is assumed that the port status is recalculated.

  Next, the wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1, and 34-2 execute STP recalculation to determine the root port and designated port. (Step S34 in FIG. 9). The wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 determine whether there is a port that is neither a root port nor a designated port (see FIG. 9 step S35), if there is, the port is shifted to the blocking state (step S36 in FIG. 9), and if not, the processing is continued as it is.

  The wireless devices 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 transmit BPDUs from the designated ports (step S37 in FIG. 9), and after 1 minute has elapsed, The communication of the trap data packet is started (step S38 in FIG. 9). Here, the wait until 1 minute elapses is to prevent the trap data packet from being lost, and the trap is waited for the time when the BPDU information is distributed to each wireless device equipped with the STP and the state of the port in the STP is stabilized. Data packet communication is started. The user can set this 1 minute time interval.

  FIG. 10 is a diagram showing an operation of changing the path by operating the STP processing part in the quality deterioration detection of the wireless line according to one embodiment of the present invention. With reference to FIG. 10, an operation of changing the path by operating the STP processing part in the quality deterioration detection of the radio channel according to the embodiment of the present invention will be described.

  Assume that the default (stable state) of the path cost is “1” for all the ports of all the wireless devices 4-1 to 4-8. In this case, the ports on both sides (wired / wireless) of the wireless devices 4-1 to 4-7 and the wired port of the wireless device 4-8 are in the forwarding state (F). In the forwarding state, the source MAC (Media Access Control) address of the received data packet is stored, the received data packet is transferred to and transmitted to another port, and the BPDU is transmitted in the case of the designated port.

  In the ring network, it is assumed that, for example, the wireless port side of the wireless device 4-8 is in the blocking state (B) by the STP function. Therefore, the route of each of the wireless devices 4-1 to 4-8 is determined in one direction, and a congestion state or a collision due to a loop on the ring configuration is avoided.

  It is assumed that quality degradation of the wireless line between the wireless device 4-3 and the wireless device 4-4 occurs from such a stable state. The trap data packet generated by this phenomenon may be lost when it is transmitted from the wireless device 4-4 to the root wireless device 4-1.

  However, in this embodiment, the wireless device 4-3 and the wireless device 4-4 detect that the wireless quality has deteriorated, and the path cost of the own device is changed from the default “1” to a cost corresponding to the BER value. Then (here, changed from “1” to “100”), an STP recalculation request notification is sent to the root wireless device 4-1. As a result, STP recalculation in the ring network is executed, and after the STP recalculation is executed, the state of the port in the STP transitions.

  In other words, in the present embodiment, the wireless device 4-3 and the wireless side port of the wireless device 4-4 change to the blocking state due to deterioration of the wireless channel, and are changed to a route with good quality. The trap data packet can be reliably sent to the root wireless device 4-1, and the loss of the trap data packet can be reduced as much as possible.

  FIG. 11 is a diagram showing an operation of changing the path by operating the STP processing part in the wireless device power-off detection according to one embodiment of the present invention. With reference to FIG. 11, an operation of changing the path by operating the STP processing part in the wireless device power-off detection according to one embodiment of the present invention will be described.

  Assume that the default (stable state) of the path cost is “1” for all ports of all the wireless devices 4-1 to 4-8. In this case, both ports (wired / wireless) of the wireless devices 4-1 to 4-7 and the wired port of the wireless device 4-8 are in the forwarding state (F). In the forwarding state, the source MAC address of the received data packet is stored, the received data packet is transferred to another port and transmitted, and in the case of the designated port, BPDU is transmitted.

  In the ring network, it is assumed that, for example, the wireless port side of the wireless device 4-8 is in a blocking state by the STP function. Therefore, the route of each of the wireless devices 4-1 to 4-8 is determined in one direction, and a congestion state or a collision due to a loop on the ring configuration is avoided.

  It is assumed that the wireless device 4-4 has been powered off from such a stable state. In the case of a ring configuration, the wireless devices at both ends (connected next to each other) can send a disconnect notification with a trap data packet, but the adjacently connected wireless devices 4-8 on the one side Since the port is in the blocking state, the notification of the trap data packet is lost.

  However, in this embodiment, since the ring configuration is handled, it is detected that the power of the wireless device has been cut off, the battery power of the wireless device 4-4 is activated, and the path cost of the own device is set to the default “1”. ”Is changed to the cost corresponding to the power-off of the wireless device (in this case,“ 1 ”is changed to“ 100 ”), and the STP recalculation request notification is sent to the root wireless device 4-1. As a result, STP recalculation in the ring network is executed, and after the STP recalculation is executed, the state of the port in the STP transitions.

  In other words, in this embodiment, when the power of the wireless device is turned off, the port on the wireless side of the wireless device 4-4 is changed to the blocking state, and the route is changed to a higher quality path. Trap data packets can be reliably sent to the root wireless device 4-1, and loss of trap data packets can be reduced as much as possible.

  Thus, in this embodiment, the wireless devices 1,4-1 to 4-8, 31-1, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34 are used. -2 is a microwave radio communication system that is connected in a ring configuration so that the radio sections 101 to 104 and the wired sections 201 to 204 are alternated. Wireless devices 1, 4-1 to 4-8, 31-1, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 using detection and backup power sources By combining the power-off detection, it is possible to prevent the loss of trap data packets used in SNMP Internet management as much as possible by changing the route of the STP.

  In other words, in this embodiment, when the BER value of the radio channel is bad but the radio channel has not been disconnected yet, the route is changed to a route with good channel quality by STP recalculation. Thus, it is possible to prevent the occurrence of data transmission failure due to line quality degradation before the route change.

  In this embodiment, the wireless devices 1,4-1 to 4-8, 31-1, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2 are also provided. The trap data packet when the power is turned off can also be notified to the upper integrated monitoring control terminal 2 by changing to an optimum route.

  Furthermore, in the present embodiment, the wireless devices 1,4-1 to 4-8, 31-1, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34-2. Constantly monitors the deterioration of the quality of the wireless line and the power supply of the device itself, and if a change is detected, raises the path cost value to a higher value and notifies the higher-order root wireless devices 4-1 and 31-1 of the STP recalculation request. Can be sent.

  An application is also conceivable in which the user can update the BER value and the value of the path cost corresponding to the power-off of the wireless device as a database from the integrated monitoring control terminal 2. The host route wireless devices 4-1 and 31-1 are subordinate wireless devices 4-2 to 4-8, 31-2, 32-1, 32-2, 33-1, 33-2, 34-1 and 34. -2 can receive the STP recalculation request notification, it can transmit BPDUs to all ports, and can use the normal STP function as it is and automatically execute the optimum route change on the ring network. .

It is a block diagram which shows the structure of the microwave radio | wireless communication apparatus by one Example of this invention. It is a block diagram which shows the structural example of the microwave radio | wireless communications system by one Example of this invention. It is a figure which shows the structure of the database part of the BER value / path cost of the database of FIG. It is a figure which shows the structure of the database part of the power supply device power-off path cost of the database of FIG. It is a figure which shows the structure of the data packet of the setting message BPDU by one Example of this invention. 3 is a flowchart showing an STP process of the root wireless device of FIG. It is a flowchart which shows the BER value notification process of the receiving side radio | wireless apparatus by one Example of this invention. It is a flowchart which shows the power-off notification process of the receiving side radio | wireless apparatus by one Example of this invention. It is a flowchart which shows the common process of the receiving side radio | wireless apparatus by one Example of this invention. It is a figure which shows the operation | movement which changes a path | route by operating a STP process part by the quality degradation detection of the radio | wireless line by one Example of this invention. It is a figure which shows the operation | movement which changes a path | route by operating a STP process part by the radio | wireless apparatus power-off detection by one Example of this invention.

Explanation of symbols

1,4-2 to 4-8,
31-2, 32-1,
32-2, 33-1,
33-2, 34-1
34-2 Microwave Wireless Communication Device 4-1 and 31-1 Route Microwave Wireless Communication Device
11 Control unit
12 Wireless circuit
13 Wired line section
14 Radio link quality check section
15 Monitoring control terminal interface section
16 BER value / Wireless device power cut path cost database
16a Database part of BER value / path cost
16b Database portion of power supply power supply disconnection path cost
16c Data packet of setting message BPDU
17 STP data storage
18 Battery power supply
19 Antenna
20 Wireless device power-off detector
21 STP processing unit 101-104 wireless section 201-204 wired section

Claims (13)

The microwave radio communication system is a microwave radio communication system configured by connecting in a ring configuration so that a wireless section and a wired section are alternated,
A spanning tree protocol is implemented in the ring configuration part,
Each of the microwave radio communication apparatuses is a first detection means for detecting quality degradation of a radio line, a second detection means for detecting power-off of the own apparatus, and any of the first and second detection means And a control means for updating the path cost value of the own apparatus to a high numerical value and changing the path of the spanning tree protocol when a change is detected.   2. The microwave radio communication system according to claim 1, wherein the control means transmits a recalculation request notification of the spanning tree protocol to a host route device.   When the upper-level root device receives the spanning tree protocol recalculation request notification from the subordinate microwave radio communication device, it automatically sends a BPDU (Bridge Protocol Data Unit) to all the ports and automatically optimizes the ring configuration. 3. The microwave radio communication system according to claim 2, wherein a simple path change is executed.   2. The control unit according to claim 1, wherein the control unit supplies power to the own device only for a predetermined time set in advance by a backup power source when the second detection unit detects that the power source of the own device is cut off. 4. The microwave radio communication system according to any one of 3. A microwave wireless communication device that is connected to one of adjacent devices in a wireless section and connected to the other of the adjacent devices in a wired section to form a ring configuration system,
A spanning tree protocol is implemented in the ring configuration part,
When a change is detected by any one of the first detecting means for detecting the deterioration of the quality of the wireless line, the second detecting means for detecting the power-off of the own apparatus, and the first and second detecting means, A microwave radio communication apparatus comprising: control means for updating a path cost value of the apparatus to a high numerical value to change a path of the spanning tree protocol.   6. The microwave radio communication apparatus according to claim 5, wherein the control means transmits a recalculation request notification of the spanning tree protocol to a host route apparatus.   When the own device is the higher-level root device, when the spanning tree protocol recalculation request notification is received from the subordinate device, a BPDU (Bridge Protocol Data Unit) is automatically transmitted to all ports and automatically on the ring configuration. 7. The microwave radio communication apparatus according to claim 6, wherein an optimum path change is executed.   6. The control unit according to claim 5, wherein the control unit supplies power to the own device only for a predetermined time set in advance by a backup power source when the second detection unit detects that the power source of the own device is cut off. 8. The microwave radio communication apparatus according to any one of 7. A data transfer method used in a microwave radio communication system in which a microwave radio communication apparatus is configured by connecting in a ring configuration such that a radio section and a wired section are alternated,
A spanning tree protocol is implemented in the ring configuration part,
The microwave radio communication apparatus is one of a first detection process for detecting quality degradation of a radio line, a second detection process for detecting power-off of the own apparatus, and the first and second detection processes. And a control process for updating the path cost value of the local apparatus to a high numerical value and performing a path change of the spanning tree protocol when a change is detected in step (b).   10. The data transfer method according to claim 9, wherein the control processing transmits a recalculation request notification of the spanning tree protocol to an upper root device.   When the higher-level root device receives the spanning tree protocol recalculation request notification from the subordinate microwave radio communication device, it automatically transmits the BPDU (Bridge Protocol Data Unit) to all the ports and automatically optimizes it on the ring configuration. The data transfer method according to claim 10, further comprising performing a simple path change.   10. The control process according to claim 9, wherein the control process supplies power to the own apparatus for a predetermined time set in advance by a backup power supply when the power-off of the own apparatus is detected in the second detection process. The data transfer method according to any one of 11. A program of a data transfer method used in a microwave radio communication system in which a microwave radio communication device is configured by connecting in a ring configuration such that a radio section and a wired section are alternated,
A spanning tree protocol is implemented in the ring configuration part,
The computer detects a change in one of the first detection process for detecting the deterioration of the quality of the wireless line, the second detection process for detecting power-off of the own apparatus, and the first and second detection processes. A program for executing a control process for updating the path cost value of the own device to a high numerical value and changing the path of the spanning tree protocol.

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