JP2010004487A - Wireless communication system, monitoring apparatus and exchange node - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless communication system, monitoring apparatus and exchange node for shortening a polling period without applying any excessive load to the monitoring apparatus that monitors network devices. <P>SOLUTION: A wireless communication system includes: a radio base station device CS which communicates with radio terminal equipment by radio; an exchange node N which controls the radio base station device CS and is connected to an IP network; and a monitoring apparatus W which monitors via the IP network a fault in the exchange node N or the radio base station device CS that is a device to be monitored. The monitoring apparatus W transmits a fault monitoring packet to the device to be monitored and monitors the fault in the device to be monitored by executing a thread, as a series of processes for receiving a response to the fault monitoring packet, in parallel with a first upper limit number of threads as an upper limit. If no response to the fault monitoring packet is received even after the lapse of a predetermined time, a thread to perform processing by succeeding fault monitoring to be next executed by the thread is newly activated to execute threads more than the first upper limit number in parallel. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wireless communication system in which a wireless terminal device performs wireless communication, a monitoring device, and failure monitoring of an exchange node.

  In recent years, with the development of wireless communication systems such as mobile phones and PHS, a large number of wireless base station devices and switching nodes for connecting these wireless base station devices to a network have been installed. When a failure occurs in a network device such as a wireless base station device or an exchange node provided in this wireless communication system, the network device is bypassed, and wireless communication is performed in preparation for quick recovery of the failed network device. The system monitors network equipment failures.

  Conventionally, in a wireless communication system, it is not possible to perform failure monitoring of all network devices of this wireless communication system at the same time because the load on the CPU of the monitoring device is large. A polling method is used in which a failure monitoring packet for failure monitoring is transmitted to all the network devices to be monitored and a response to the failure monitoring packet is received. Therefore, the polling cycle, which is a cycle for polling the network device to be monitored, becomes longer in proportion to the number of network devices to be monitored. If this polling cycle becomes long, the time from when a failure occurs in a network device until the monitoring device detects the failure becomes long. In particular, since a huge number of network devices are connected in recent wireless communication systems, the polling cycle becomes longer. In addition, in order for the monitoring device to poll a network device and detect that a failure has occurred in the network device, it must wait until a predetermined time elapses (timeout), and the polling cycle There is a problem that the length of the becomes remarkable.

Here, in order to solve such a problem, a technique of performing polling by constructing a tree-type hierarchical structure by repeating grouping is known (for example, Patent Document 1).
Japanese Unexamined Patent Publication No. 2007-201984

  However, the technique described in Patent Document 1 above does not solve the problem that the polling cycle becomes longer due to the timeout waiting for detecting the occurrence of a failure.

  The present invention has been made to solve the above-described problems, and provides a wireless communication system, a monitoring device, and an exchange node that shorten a polling period without applying an excessive load to a monitoring device that monitors network devices. For the purpose.

  To achieve the above object, a wireless communication system according to the present invention includes a wireless base station device that communicates wirelessly with a wireless terminal device, an exchange node that controls the wireless base station device and is connected to an IP network, and a monitored target A monitoring device that monitors a failure of the switching node or the radio base station device, which is a device, via the IP network, the monitoring device transmits a failure monitoring packet to the monitored device, and A failure monitoring means for monitoring a failure of the monitored device by executing a thread as a series of processes for receiving a response to the failure monitoring packet in parallel up to the first upper limit number, and a response to the failure monitoring packet is predetermined. It is determined whether or not a response to the failure monitoring packet has been received within a predetermined time. Characterized in that it comprises a thread execution means for executing a thread in the number exceeding the newly said first upper limit number to start a thread that performs processing in are in parallel.

In order to achieve the above object, a monitoring apparatus according to the present invention includes a radio base station apparatus that communicates with a radio terminal apparatus by radio, an exchange node that controls the radio base station apparatus and is connected to an IP network,
A monitoring device of a wireless communication system having a monitoring device for monitoring a failure of the switching node or the wireless base station device, which is a monitored device, via the IP network, and sending a failure monitoring packet to the monitored device A fault monitoring means for monitoring a fault of the monitored device by executing in parallel a thread that is a series of processes for transmitting and receiving a response to the fault monitoring packet with a first upper limit as an upper limit; and the fault monitoring packet When a response to the failure monitoring packet is not received even after a predetermined time has elapsed, the thread takes over the next failure monitoring and performs processing. Thread execution means for newly starting a thread and executing in parallel the number of threads exceeding the first upper limit number is provided.

  In order to achieve the above object, an exchange node according to the present invention includes a radio base station apparatus that communicates with a radio terminal apparatus by radio, an exchange node that controls the radio base station apparatus and is connected to an IP network, Thread that is a series of processes for monitoring a failure of the switching node or the radio base station device that is a monitoring device, transmitting a failure monitoring packet to the monitored device via the IP network, and receiving a response to the failure monitoring packet Are executed in parallel with the first upper limit number being the upper limit, it is determined whether or not a response to the failure monitoring packet has been received within a predetermined time, and the corresponding response is not received even after the predetermined time has elapsed, Threads that perform processing by taking over the next failure monitoring by the thread are newly activated, and threads in parallel up to the second upper limit number exceeding the first upper limit number A switching node of a wireless communication system having a monitoring device that executes and monitors a failure of the switching node, wherein the monitored devices are grouped into a plurality of groups by the monitoring device, and the monitored devices belonging to the group The primary device determined as the representative monitored device from among the monitoring devices performs failure monitoring of the monitored device in the group to which the primary device belongs, and a failure occurs in at least one monitored device of the monitored devices When it is detected that a failure has occurred, the monitoring device is provided with first failure notification means for notifying that a failure has occurred.

  According to the present invention, it is possible to shorten the polling cycle without imposing an excessive load on a monitoring device that monitors network devices.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a wireless communication system showing an embodiment of the present invention.
The wireless communication system S includes a monitoring device W, a wireless base station device CS (common to CS1 to CSn), and a switching center 100, which are connected to each other via an IP network 1000. The radio base station apparatus CS communicates with the radio terminal apparatus PS1 by radio. Although only one wireless terminal device PS1 is shown in FIG. 1, a large number of wireless terminal devices PS1 communicate with each wireless base station device CS wirelessly. Although only one switching center 100 is shown, a large number of switching centers 100 are connected to the IP network 1000, but only one is shown here for the sake of simplicity. In this switching center 100, at least one switching node N (common to N1 to Nn) that controls the wireless base station device CS so that the wireless base station device CS communicates via the IP network 1000 is installed. The switching node N is connected to the IP network 1000.

  The monitoring device W monitors whether a failure has occurred in network devices (monitored devices) such as the radio base station device CS and the exchange node N that constitute the radio communication system S. The monitoring performed by the monitoring device W is assumed to be a polling method. The polling method is a process (fault monitoring means) that normally transmits a request message periodically for the purpose of collecting information on devices connected to the network. Fault monitoring using this polling method transmits a fault monitoring packet from the monitoring device W to the network device, and when the network device responds to the fault monitoring packet, the monitoring device W confirms that the network device is operating normally. Can be detected. If the network device does not respond to the failure monitoring packet within a certain time, the monitoring device W can detect that a failure has occurred in the network device.

FIG. 2 is a block diagram illustrating a configuration of a radio base station apparatus CS (common to CS1 to CSn) provided in the radio communication system.
The radio base station apparatus CS includes a radio interface unit 11, an IP interface unit 12, a main calculation unit 13, and a storage unit 14. The radio interface unit 11, the IP interface unit 12, and the storage unit 14 are It is connected to the calculation unit 13. The wireless interface unit 11 communicates wirelessly with the wireless terminal device PS1, and the IP interface unit 12 transmits data received from the wireless terminal device PS1 by the wireless interface unit 11 to the IP network 1000, or the wireless interface unit. 11 receives data transmitted from the IP network 1000 to the wireless terminal device PS2. The storage unit 14 stores data communicated by the wireless interface unit 11 or the IP interface unit 12, information on a paging area set for making an incoming call to the wireless terminal device PS1, and the like. The main processing unit 13 determines whether or not to make an incoming call to the wireless terminal device PS1 received from the IP network 1000 with reference to the storage unit 14, and when determining that the incoming call is to be made, The whole radio base station apparatus CS is controlled by making an incoming call to the terminal apparatus PS1.

FIG. 3 is a block diagram showing a configuration of an exchange node N (common to N1 to Nn) provided in the radio communication system S.
The exchange node N includes an IP interface unit 21, a maintenance interface unit 22, a main operation unit 23, and a storage unit 24. The IP interface unit 21, the maintenance interface unit 22, and the storage unit 24 are included in the main operation unit. 23. The IP interface unit 21 communicates with the radio base station CS and other switching nodes N via the IP network 1000, and the maintenance interface unit 22 communicates with the monitoring device W via the IP network 1000. Is what you do. The storage unit 14 includes data communicated by the IP interface unit 21 or the maintenance interface unit 22, information on the paging area set for making an incoming call to the wireless terminal device PS1, and the ID and network address of its own switching node N. The information of the exchange node N is stored. The ID of the exchange node N includes information on the prefecture where the exchange node N is installed, information on the exchange, and the like. Further, the main processing unit 23 refers to the information of the paging area stored in the storage unit 24 in order to transmit the incoming call to the wireless terminal device PS1 received from the IP network 1000 to the wireless base station device CS, It controls the entire switching node N, such as responding to a failure monitoring packet sent from the monitoring device W.

FIG. 4 is a block diagram illustrating a configuration of the monitoring device W provided in the wireless communication system S.
The monitoring device W includes an IP interface unit 31, a main calculation unit 32, and a storage unit 33. The IP interface unit 31 and the storage unit 33 are connected to the main calculation unit 32. The IP interface unit 31 transmits a failure monitoring packet for monitoring a failure of a network device such as the wireless base station device CS and the switching node N provided in the wireless communication system S via the IP network 1000, and those networks. A response to the failure monitoring packet is received from the device. The storage unit 33 stores the failure monitoring information of the network device monitored by the monitoring device W received by the IP interface unit 31 by the main calculation unit 32. In addition, information on the paging area (paging area information storage means) 33a set for placing an incoming call to the wireless terminal device PS1, information on the prefecture where the exchange node N is installed, and information on the exchange office are included. Switching node information (switching station information storage means, prefecture information storage means) 33b such as switching node ID, wireless base station apparatus information 33c indicating which switching node N is controlled by the wireless base station apparatus CS, wireless communication system And the network address information (network address storage means) 33d used by the monitoring apparatus W and group information (group information storage means) 33e regarding grouping of the monitored apparatuses performed by the monitoring apparatus W to be described later. . The group information 33e includes information on which monitored devices belong to a group grouped by the monitoring device W and which monitored device is a representative device (a primary device described in detail later) of the group. It is. When the monitoring device W groups the monitored devices, the information is stored in the storage unit 33 in which the group information 33e is stored.

  Next, a process in which the monitoring apparatus W performs the failure monitoring of the network device will be described with reference to FIGS.

FIG. 5 is a diagram illustrating a monitoring target network device (monitored device) on which the monitoring device W performs failure monitoring.
When the monitoring apparatus W performs failure monitoring on all network devices included in the wireless communication system, the polling cycle for performing failure monitoring on all network devices becomes very long. The primary device that monitors the network devices in the group is determined on behalf of the group (grouping means), and the monitoring device W directly monitors the primary device of each group (primary device). Monitoring means). In this way, by reducing the number of network devices that are directly monitored by the monitoring device W, the load on the monitoring device W can be reduced, so that the polling cycle can be shortened. Furthermore, by reducing the number of network devices that the monitoring device W directly monitors, the network load due to the failure monitoring packet transmitted from the monitoring device W can be reduced.

  Further, the primary device monitored by the monitoring device W monitors other network devices in the group. The failure monitoring method performed by the primary device will be described in detail in the second embodiment.

Here, grouping of network devices performed by the monitoring apparatus W will be described. Although there are many grouping methods, four methods will be described in this embodiment.
(Grouping standard 1)
The first method is to perform grouping based on the network address set in the network device.
The storage unit 33d of the monitoring device W stores information on network addresses used in the wireless communication system. The monitoring device W refers to the information on the network address and groups the network devices to which the same network address is assigned as one group. The network address is an address that divides the wireless communication system into a plurality of networks and indicates the networks. For this reason, network devices assigned the same network address are often physically close to each other.

  In this way, network devices to which the same network address is assigned are grouped into one group, so that the network load due to the failure monitoring packet that is grouped by location and transmitted from the monitoring device W can be distributed. . In addition, although the primary device performs failure monitoring within the same group, the primary device transmits a failure monitoring packet for monitoring network devices in the group only physically at a short distance, thus reducing the network load. it can.

(Grouping standard 2)
The second method is to perform grouping based on the prefecture where the network device is installed.
Exchange node information is stored in the storage unit 33b of the monitoring device W, and radio base station information is stored in the storage unit 33c of the monitoring device W. As the exchange node information, for example, an exchange node ID is stored, and since the exchange node ID includes information on the prefecture, the prefecture where the exchange node N is installed is referred to by referring to this exchange node ID. Recognize. Further, since the radio base station information includes information on which switching node N is controlled, the state of connection between the radio base station apparatus CS and the switching node N can be known. The monitoring device W can group network devices by prefecture by referring to the exchange node information and the radio base station information.

  In this way, by grouping network devices into prefectures, the same effect as when grouping based on network addresses can be expected.

(Grouping standard 3)
The third method is to perform grouping based on the information of the paging area where the network device is installed.
Information of the paging area of the wireless communication system S is stored in the storage unit 33a of the monitoring device W. The paging area information is information indicating a range in which a call is made to the radio terminal apparatus PS1 for each of the plurality of radio base station apparatuses CS and one or a plurality of switching nodes. The monitoring apparatus W can group the network devices for each paging area by referring to the information on the paging area.

  In this way, by grouping network devices for each paging area, the same effect as when grouping for each network address or each prefecture can be expected. Further, the grouping based on the information of the paging area can be grouped even if the wireless communication system does not include the information of the prefecture in the exchange node ID.

(Grouping standard 4)
The fourth method is to perform grouping based on information of the switching center 100 in which the switching node N is stored.
The storage node 33b of the monitoring device W stores exchange node information. The exchange node information stores, for example, an exchange node ID, and the exchange node ID includes information on the exchange 100 in which the exchange node N is stored. Therefore, it is known from this switching node ID which switching node N is stored in the switching station 100, and the switching node N stored in the same switching station 100 and the radio base station apparatus CS controlled by the switching node N are 1 There can be one group.

  In this way, by grouping network devices for each switching office 100, the switching nodes N in the group are stored in the same switching center 100, so that the distance of fault monitoring in the group performed by the primary device is reduced. Network load can be further reduced.

  Although four grouping criteria have been described so far, more effective fault monitoring can be performed by combining a plurality or all of these grouping methods. For example, the size of one group grouped according to each grouping standard is the largest for each prefecture, followed by each switching center and each paging area. The group grouped for each network address has a size depending on the scale of the wireless communication network. The group can be hierarchized using such a group size. By hierarchizing groups, the polling cycle can be further shortened.

FIG. 6 is a schematic diagram illustrating a processing method of the monitoring device W.
The monitoring device W repeatedly performs a process of transmitting a failure monitoring packet to the network device to be monitored and receiving a response thereto. This series of processing is called a thread. The monitoring device W executes the threads in parallel up to the maximum number that can be processed, and processes a plurality of threads in parallel. In the present embodiment, a case where the first upper limit number n of threads that can be processed by the monitoring apparatus W is eight is shown. In addition, the second upper limit number m when starting and executing threads exceeding the upper limit number n provided for “effective use of standby time” described in detail in the description of FIG. 7. The case where 16 is set is shown. The thread number is prepared up to 16 which is the second upper limit number m, and the activated thread number or the thread number for performing the next processing is entered in the activated thread number. Normally, threads are activated up to thread number 8. The thread number for performing the next processing is described in detail in the description of FIG. 7, but is the number of the thread that is newly activated during the waiting time until it is detected that there is no response from the monitoring target and a failure has occurred. It is.

  FIG. 6A shows threads when eight threads that can be processed by the monitoring apparatus W are executed when all the network devices to be monitored are operating normally. FIG. 6B shows a case where the thread with the thread number 3 is in a standby state and the thread 9 is newly activated while eight threads are already being executed. FIG. 6C shows a state in which the thread is in a standby state and the process of starting a new thread is repeated, and the threads are started up to 16 which is the second upper limit number m.

  As described above, the polling cycle can be shortened by efficiently polling by starting the threads exceeding the first upper limit number n. In addition, by providing the second upper limit number m, which is larger than the first upper limit number n, it is possible to prevent an excessive load from being applied to the monitoring device W.

FIG. 7 is a sequence diagram of the entire wireless communication system showing processing for monitoring a failure of the network device performed by the monitoring apparatus W.
Here, when the monitoring device W performs failure monitoring of the radio base station device CS1 and the exchange nodes N1, N2, and N3, the number of threads exceeding the first upper limit number is activated using the thread standby state. Processing (thread execution means) to be performed is shown.

  First, the monitoring device W transmits a failure monitoring packet to the radio base station device CS1 (S11). If the radio base station apparatus CS1 and the network are normal, the response from the radio base station apparatus CS1 to this fault monitoring packet is received within t1 seconds after the monitoring apparatus W transmits the fault monitoring packet. Repeat sending and monitoring of fault monitoring packets in one thread. A plurality of these threads are activated, and parallel processing is simultaneously performed up to the first upper limit number n that can be processed by the monitoring device W.

  In this example, no response is received from the radio base station apparatus CS1 for less than t1 seconds. In this case, the radio base station apparatus CS1 is in a state where either a failure occurs and the response is impossible or the response is delayed. The waiting time until the response is received or until the response reception waiting time-out (t2 seconds) is not loaded because the thread is in a waiting state. Therefore, if the monitoring device W does not receive a response in less than t1 seconds after transmitting the failure monitoring packet, the monitoring device W transmits the failure monitoring packet without waiting for elapse of t2 seconds that time out. After t1 seconds from the start, a new thread is activated (S12), and this standby time is effectively used. This thread is for monitoring a failure to the switching node N1 that is the next monitoring target of the radio base station apparatus CS1. When the thread is newly activated, the monitoring device W transmits a failure monitoring packet to the exchange node N1 (S13). The monitoring device W receives a response from the exchange node N1 that has received the failure monitoring packet (S14).

  When the monitoring device W receives the response, the next failure monitoring packet is transmitted to the switching node N2 that is the next monitoring target t0 seconds after the response is received (S15). Since the response from the exchange node N2 has not been received within t1 seconds after transmitting the failure monitoring packet, the monitoring device W further activates a thread (S16). This thread transmits a failure monitoring packet to the next switching node N3 to be monitored (S17). Thereafter, a response is received from the exchange node N2 before the time t2 seconds when the thread activated in the process S12 times out (S18). Since there is a response before elapse of t2 seconds that time out, the monitoring apparatus W determines that the switching node N2 is normal and terminates the thread that has transmitted the failure monitoring packet to the switching node N2. On the other hand, after receiving the response from the exchange node N3, the thread activated in process S16 transmits a failure monitoring packet to the next network device to be monitored, and repeats the same process.

  In this way, when the monitoring device W is executing a thread for performing failure monitoring up to the first upper limit number n that the monitoring device W can simultaneously process, when those threads are in a standby state, By starting a new thread to use the standby state, the polling cycle can be shortened without applying an excessive load to the monitoring device.

  In addition, the time from when a failure monitoring packet is transmitted to when there is a response is normally distributed in the vicinity of a certain average value, but may vary greatly depending on the operation of the monitored device by the operator and the delay of the network. By utilizing this characteristic, in order to prevent the variation from being erroneously detected as a failure, the waiting time until the reception wait time-out of the response to the failure monitoring packet for detecting the failure (t2 seconds) is not shortened. In addition to the response waiting time for failure detection, the first upper limit number is obtained by using a resource such as a CPU waiting for a response by setting a predetermined time (t1 second) as a time exceeding the distribution of the average value. The number of threads exceeding (n) can be activated.

  In the first embodiment, the process in which the monitoring apparatus W monitors network devices such as the exchange node N and the radio base station apparatus CS provided in the radio communication system S has been described. In the second embodiment, failure monitoring (first failure notification means) of network devices in the group grouped in the first embodiment will be described.

FIG. 8 is a schematic diagram when the monitoring apparatus W performs failure monitoring of a group grouped according to any of the grouping criteria described in the first embodiment and failure monitoring within the group. Since the configuration of the wireless communication system S and the configuration of the exchange node N are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.
The solid arrow shown in FIG. 8 is a failure monitoring route when no failure has occurred in the primary device. The monitoring device W performs failure monitoring of the primary device of the group Gr composed of the exchange nodes N1 to N5. The case where the primary device is the exchange node N1 is shown. This primary device performs failure monitoring of the exchange nodes N2 to N5 of the group Gr. When the primary device detects an exchange node N in which a failure has occurred in the group Gr, information on the exchange node N in which the failure has occurred is notified to the monitoring device W.

  In addition, when the monitoring device W determines the primary device, if the failure occurs in the primary device that performs the failure monitoring of the group Gr, the monitoring device W selects the secondary device that performs the failure monitoring of the group Gr instead of the primary device. Make a decision. This secondary device needs to detect that a failure has occurred in the primary device in order for its own exchange node N4 to start monitoring the failure. For this purpose, the secondary device monitors the failure of the primary device while the primary device is monitoring the failure (second failure notification means).

A broken-line arrow shown in FIG. 8 is a failure monitoring route when a failure occurs in the primary device.
Since there is no response from the primary device, the monitoring device W is switched to monitor the failure of the secondary device, and the secondary device performs failure monitoring of N1 to N3 and N5.

  In this way, the primary device monitors the failure of the exchange node N of the group Gr, and the secondary device monitors the failure of the primary device, so that even if a failure occurs in the primary device, the failure monitoring in the group Gr is continued. can do. Further, when performing failure monitoring in the group Gr, the failure of the network can be reduced by notifying the monitoring device W of the failure only when a failure has occurred.

  In the second embodiment, the secondary device has been described in which the primary device performs the failure monitoring of the network devices in the group grouped in the first embodiment and operates as an alternative when a failure occurs in the primary device. In the third embodiment, a description will be given of a process in which a network device in a group operates as a substitute when a failure occurs in a primary device and a secondary device.

The failure monitoring process in the group will be described with reference to FIGS. Since the configuration of the wireless communication system S and the configuration of the exchange node N are the same as those in the first embodiment and the second embodiment, the same reference numerals are given and the description thereof is omitted. The configuration for monitoring the failure in the group is the same.
First, when the monitoring apparatus W performs grouping, it numbers network devices in the group. Of these numbers, the network device assigned the smallest number, that is, in FIG. 9 to FIG. 11, the exchange node N1 is the primary device, and the exchange node N2, which is the next smallest numbered network device, is the secondary device. It becomes.

  In FIG. 9, the monitoring device W monitors the switching node N1 assigned the number 1 and becomes the primary device, and the switching node N1 monitors the switching nodes N2 to N5 in the group. At that time, the switching node N2 that has become the secondary device monitors the primary device as in the second embodiment.

  When a failure occurs in the primary device, as shown in FIG. 10, the secondary device operates as the primary device in the same manner as in the second embodiment, and then the exchange node N3 assigned the next lower number operates as the secondary device.

  Further, when a failure occurs in the switching node N2, as shown in FIG. 11, the switching node N3 operates as a primary device, and the switching node N4 assigned the next lower number operates as a secondary device. Thereafter, when a failure occurs in the network device that operates the primary device, the same processing is repeated.

  In this way, when the monitoring device W groups network devices, by assigning numbers to the network devices in the group, even if a failure occurs in the primary device, failure monitoring of the network devices in the group Can continue.

  In addition, this invention is not limited to the above structure, A various deformation | transformation is possible. For example, in the grouping standard shown in the first embodiment, the information on the prefecture and the information on the exchange are not included in the exchange node ID, but the monitoring device W stores the information, but the embodiment 1 can be obtained. Further, the groups shown in the second embodiment and the third embodiment are configured only by the switching node N, but may be configured by the radio base station device CS, and may be configured by both the radio base station device CS and the switching node N. You may make it comprise.

The block diagram of the radio | wireless communications system which concerns on one embodiment of this invention. The block diagram of the radio base station apparatus with which the radio | wireless communications system which concerns on one embodiment of this invention was equipped. The block diagram of the exchange node with which the radio | wireless communications system which concerns on one embodiment of this invention was equipped. The block diagram of the monitoring apparatus with which the radio | wireless communications system which concerns on one embodiment of this invention was equipped. The figure which showed the monitoring apparatus and monitored apparatus which perform the failure monitoring in the radio | wireless communications system which concerns on one embodiment of this invention. The schematic diagram which showed the processing capacity of the monitoring apparatus which concerns on one embodiment of this invention. The sequence diagram which shows the process in which the monitoring apparatus which concerns on one embodiment of this invention monitors the network apparatus with which the radio | wireless communications system was equipped. The schematic diagram which showed the group which the monitoring apparatus which concerns on one embodiment of this invention monitors, and the failure monitoring in the group. The schematic diagram which showed the group which the monitoring apparatus which concerns on one embodiment of this invention monitors, and the failure monitoring in the group. The schematic diagram which showed the group which the monitoring apparatus which concerns on one embodiment of this invention monitors, and the failure monitoring in the group. The schematic diagram which showed the group which the monitoring apparatus which concerns on one embodiment of this invention monitors, and the failure monitoring in the group.

Explanation of symbols

PS1 ... wireless terminal device, CS, CS1, CS2, ..., CSn ... wireless base station device, S ... wireless communication system, N, N1, N2, N3, N4, N5, ..., Nn ... switching node, W ... monitoring device , 11 ... Wireless interface unit, 12, 21, 31 ... IP interface unit, 13, 23, 32 ... Main operation unit, 14, 24, 33 ... Storage unit, 22 ... Maintenance interface unit, 33a ... Paging area information, 33b ... Switching node information, 33c ... Radio base station device information, 33d ... Network address information, 33e ... Group information, 100 ... Switching station, 1000 ... IP network, Gr, Gr1, Gr2, Gr3, Gr4 ... Group

Claims (20)

A wireless base station device that communicates wirelessly with a wireless terminal device;
An exchange node that controls the radio base station apparatus and is connected to an IP network;
A monitoring device that monitors a failure of the switching node or the radio base station device via the IP network, which is a monitored device;
The monitoring device includes
A thread that is a series of processes for transmitting a failure monitoring packet to the monitored device and receiving a response to the failure monitoring packet is executed in parallel up to the first upper limit number to monitor the failure of the monitored device. Fault monitoring means,
It is determined whether or not a response to the failure monitoring packet has been received within a predetermined time, and when a response to the failure monitoring packet is not received even after a predetermined time has elapsed, the thread takes over the next failure monitoring. A wireless communication system comprising: a thread execution unit that newly starts a thread that performs processing in step 1 and executes in parallel the number of threads that exceed the first upper limit number. 2. The wireless communication system according to claim 1, wherein the thread execution unit executes threads in parallel up to a second upper limit number. In the monitoring device, the monitored devices are grouped into a plurality of groups, a primary device that is a representative monitored device is determined from the monitored devices belonging to the group, and the monitored devices belonging to the group are determined. Grouping means for storing device information and primary device information in a group information storage unit;
Primary device monitoring means for performing failure monitoring of the primary device,
The primary device performs failure monitoring of the monitored device of the group to which the primary device belongs, and when a failure has occurred in at least one monitored device of the monitored devices, the failure has occurred in the monitoring device The wireless communication system according to claim 1, further comprising a first failure notification unit that notifies Further comprising a switching center connected to the IP network and storing at least one said switching node;
The monitoring device includes switching center information storage means for storing information of the switching center that stores the switching node,
The grouping means refers to the information on the switching center stored in the switching center information storage means and groups the monitored devices stored in the same switching center. 3. The wireless communication system according to 3. The monitoring device comprises network address storage means for storing information on the network address of the monitored device,
The said grouping means is grouped for every said to-be-monitored apparatus of the same network address with reference to the information of the said network address memorize | stored in the said network address memory | storage means. Wireless communication system. The monitoring device comprises a prefecture information storage means for storing information on the prefecture where the monitored device is installed,
The grouping means groups the monitored devices installed in the same prefecture with reference to the prefecture information stored in the prefecture information storage means. The wireless communication system according to 1. The monitoring device includes paging area information storage means for storing information of a paging area where the monitored device is installed,
The grouping means refers to the paging area information stored in the paging area information storage means, and groups the monitored devices installed in the same prefecture. The wireless communication system according to 1. The grouping means determines a secondary device for monitoring a failure of the primary device from the group,
If the secondary device detects a failure of the primary device, the secondary device monitors the failure of the monitored device belonging to the group on behalf of the primary device, and the failure of at least one monitored device of the monitored devices 8. The wireless communication system according to claim 3, further comprising second failure notification means for notifying the monitoring device that a failure has occurred when it is detected that a failure has occurred. The grouping means sets an order for the monitored devices belonging to the group,
The wireless communication system according to claim 8, wherein the monitored device becomes the primary device or the secondary device according to the order. A wireless base station device that communicates wirelessly with a wireless terminal device;
An exchange node that controls the radio base station apparatus and is connected to an IP network;
A monitoring device of a wireless communication system having a monitoring device that monitors a failure of the switching node or the wireless base station device, which is a monitored device, via the IP network,
A thread that is a series of processes for transmitting a failure monitoring packet to the monitored device and receiving a response to the failure monitoring packet is executed in parallel up to the first upper limit number to monitor the failure of the monitored device. Fault monitoring means,
It is determined whether or not a response to the failure monitoring packet has been received within a predetermined time, and when a response to the failure monitoring packet is not received even after a predetermined time has elapsed, the thread takes over the next failure monitoring. And a thread executing means for executing in parallel a number of threads exceeding the first upper limit by starting a new thread for processing in step (a). The monitoring device according to claim 10, wherein the thread execution unit executes threads in parallel up to a second upper limit number. The monitored devices are grouped into a plurality of groups, a primary device that is a representative monitored device is determined from among the monitored devices belonging to the group, information on the monitored devices belonging to the group, and a primary device The monitoring apparatus according to claim 10, further comprising grouping means for storing the information in the group information storage unit. Further comprising exchange information storage means for storing information of an exchange that stores at least one of the exchange nodes.
The grouping means refers to the information on the switching center stored in the switching center information storage means and groups the monitored devices stored in the same switching center. 12. The monitoring device according to 12. Network address storage means for storing information on the network address of the monitored device;
13. The grouping unit according to claim 12, wherein the grouping unit refers to the network address information stored in the network address storage unit and groups the monitored devices having the same network address. Monitoring device. A prefecture information storage means for storing information on the prefecture where the monitored device is installed,
13. The grouping means refers to the prefecture information stored in the prefecture information storage means, and groups the monitored devices installed in the same prefecture. The monitoring device described in 1. Paging area information storage means for storing information of a paging area where the monitored device is installed;
13. The grouping unit performs grouping for each monitored device installed in the same prefecture with reference to the paging area information stored in the paging area information storage unit. The monitoring device described in 1. The grouping means determines a secondary device that monitors a failure of the primary device from the group, and causes the secondary device to monitor a failure of the primary device. The monitoring device described. The monitoring device according to claim 17, wherein the grouping unit sets an order for the monitored devices belonging to the group, and causes the monitored device to be the primary device or the secondary device according to the order. . A wireless base station device that communicates wirelessly with a wireless terminal device;
An exchange node that controls the radio base station apparatus and is connected to an IP network;
Fault monitoring of the switching node or the radio base station apparatus that is a monitored apparatus is a series of processes for transmitting a fault monitoring packet to the monitored apparatus via the IP network and receiving a response to the fault monitoring packet. When a thread is executed in parallel with the first upper limit number as an upper limit, it is determined whether or not a response to the failure monitoring packet has been received within a predetermined time, and the corresponding response is not received even after the predetermined time has elapsed. , The thread that performs processing by taking over the next failure monitoring by the thread is newly activated, and the thread is executed in parallel with the second upper limit number exceeding the first upper limit number being executed as an upper limit. A switching node of a wireless communication system having a monitoring device for monitoring a failure of
The monitored device groups the monitored devices into a plurality of groups, and the primary device determined as a representative monitored device among the monitored devices belonging to the group is:
A failure monitoring is performed on the monitored device of the group to which the device belongs, and when a failure has occurred in at least one monitored device among the monitored devices, a first notification is made to the monitoring device that the failure has occurred. An exchange node comprising a failure notification means. The secondary device determined by the monitoring device to be a monitored device that monitors a failure of the primary device from the group,
When a failure of the primary device is detected, the failure of the monitored device belonging to the group is monitored on behalf of the primary device, and it is detected that a failure has occurred in at least one monitored device of the monitored devices The switching node according to claim 19, further comprising second failure notification means for notifying the monitoring device that a failure has occurred.

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