JPH03234129A - Mobile communication network constitution method - Google Patents

Abstract

PURPOSE:To minimize the effect of a fault of a mobile communication control station and to distribute concentrated loads by adopting network configuration so that a radio base station comes under the jurisdiction of plural mobile communication control stations. CONSTITUTION:The network configuration of one versus plural stations is adopted such as one radio base station 12 comes under the jurisdiction of plural mobile communication control stations 10, 11 and the radio base station 12 uses a control panel for communication line to grasp the operating state of communication lines 15, 16 opposite to the mobile communication control stations 10, 11 and the state of the mobile communication control stations 10, 11 and mobile communication control lines 13, 14. The radio base station 12 selects the communication lines 15, 16 for the mobile communication control stations 10, 11 depending on the state. Thus, the effect of load distribution of the mobile communication control stations 10, 11 and of a fault of the mobile communication control stations 10, 11 onto the radio base station 12 is minimized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a network configuration in a mobile communication system that provides car telephone, mobile phone services, and the like.

(Prior Art) In the network configuration of the conventional mobile communication system, as shown in FIG. It has a network configuration for communication, and the setting of the communication line between the mobile communication control station and the radio base station is performed by the mobile communication control station.

Furthermore, as a means of improving the reliability of mobile communication networks, the method used for wireless base stations was to overlap the wireless zones, but no consideration had been given to improving the reliability of the wired sections of mobile communication networks. When the mobile communication control station 1 fails, all of the wireless base stations 2 to 4 under its control become unavailable, making it impossible for mobile stations located in the service area under the mobile communication control station to communicate. Become. In other words, in the conventional mobile communication network configuration, even if the base station of a lower node is normal, the effect of a failure of the mobile communication control station of the upper node will directly affect the base station and mobile station of the lower node under its control. There was a problem with it.

Furthermore, since the traffic of radio base stations varies depending on geographical and temporal conditions, there are also differences in the operating rate of mobile communication control stations, and if a failure occurs in a mobile communication control station with a high operating rate, There was a problem that had a huge impact on mobile communication services.

(Problems to be Solved by the Invention) The present invention distributes the load on the mobile communication control stations and reduces the influence of mobile communication control station failures on the radio base stations by allocating a radio base station to a plurality of mobile communication control stations. The aim is to improve the reliability of mobile communication networks to the minimum possible extent.

(Means for Solving the Problems) A feature of the present invention for achieving the above object is that a plurality of radio base stations and a plurality of mobile communication control stations are installed, and a plurality of radio base stations and a plurality of mobile communication control stations are installed between the radio base stations and the mobile communication control stations. In a mobile communication system in which a communication line is provided with a communication line and a mobile communication line control line for communication, the communication line from the radio base station is distributed and accommodated in a plurality of mobile communication control stations, and the communication line is accommodated. A mobile communication network configuration in which a mobile communication line control line is provided between a mobile communication control station and the radio base station, and the radio base station side specifies the communication line with the mobile communication control station to perform communication. It's in the method.

(Function) The conventional mobile communication network configuration is such that one radio base station belongs to one mobile communication control station. On the other hand, in the present invention, as shown in FIG. 1, a network configuration is adopted in which the network belongs to one radio base station 12 or to a plurality of mobile communication control stations 10, 11, and in FIG. 23 uses the communication line control panel 20.21 to grasp the usage status of the communication line facing the mobile communication control station 18.19 and the status of the mobile communication line control line with the mobile communication control station, and depending on the status, A communication line between the radio base station 23 or the mobile communication control station 18 and the mobile communication control station 19 is selected.

Note that the radio base station and the mobile communication control station are connected by a communication line and a mobile communication line control line, but the latter is not necessarily necessary for all control stations, and the base station and a specific control station It is enough to make money only between.

(Embodiment 1) FIG. 1 is a diagram showing an embodiment in which a radio base station belongs to a plurality of mobile communication control stations, and the radio base station 12 and mobile communication control stations 10 and 11 are mobile communication line control stations. Line 13, 1
The mobile communication control station 10 and the mobile communication control station 11 exchange information with each other through the inter-mobile communication control station control line 17. In the figure above, when the communication network is operating normally, the radio base station 12 selects a communication line with the mobile communication control station depending on the usage status of the communication line between the mobile communication control station 10 and the mobile communication control station 11, and communicates with the mobile communication control station. By doing this, the load on the mobile communication control station is distributed. For example, mobile communication control station 1 - wireless base station 1
Even if a failure occurs in the mobile communication line control line 13 between the two, the radio base station 12 connects the mobile communication control station 1 to the mobile communication control station 1 via the mobile communication line control line 14 and the inter-mobile communication control station control line 17.
0, and communication is secured by the mobile communication control station 11. Further, even if the mobile communication control station 10 fails, the wireless base station 12 can similarly ensure communication by the mobile communication control station 11.

The communication line selection method in the radio base station at this time will be explained with reference to FIG. The wireless base station 23 is connected to the mobile communication control stations 18 and 1 by the communication line control panel 20.21.
9 and the state of the mobile communication line control line between the mobile communication control station and the mobile communication control station, and when the network is operating normally, the communication line between the mobile communication control station I8 and the mobile communication control station I9 is managed. A communication line is randomly selected and communication is performed so that the traffic from the radio base stations 23 is almost evenly distributed.

In the multi-belonging network configuration shown in Figure 1, if the mobile communication control station selects the communication line as in the past, the mobile communication control stations mutually manage traffic using the inter-mobile communication control station control line. However, by having the wireless base station perform the communication line selection described above, the decision can be made within the wireless base station, making it an effective choice for mobile communication networks. It is also highly reliable.

(Embodiment 2) FIG. 3(1) is a diagram showing an embodiment regarding dual assignment of the first wireless base station of the present invention. For example, the wireless base station 28
The traffic is transmitted to the mobile communication control station 24, which is an upper node.
．． When 25 is in normal operation, it is distributed and operated between these two mobile communication control stations. If the mobile communication control station 24
When a failure occurs in the wireless base station 28, the mobile communication control station 24
The occurrence of a failure is detected by the signal from the wireless base station 2.
The traffic of 8 is controlled by the radio base station 28 so that it is operated under the mobile communication control station 25, and the communication of the radio base station 28 is ensured.

Similarly, for the radio base stations 29 to 31, when a failure occurs in a mobile communication control station that is a higher-level node, communication is ensured by a higher-level node other than the higher-level node in which the failure is occurring due to a signal from the higher-level node.

(Example 3) Fig. 3 (2) is also an example of dual assignment of radio base stations, but the difference from Fig. 3 (1) is that between the radio base station and the mobile communication control station. This is because the lines are configured in a loop. When the entire mobile communication network is operating normally, the mobile communication control station 32 controls the traffic of the radio base stations 36 and 37. At this time, if a failure occurs in the mobile communication control station 32, all the traffic of the radio base station 36 is transferred to the mobile communication control station 35, all the traffic of the radio base station 37 is controlled by the mobile communication control station 33, and the mobile communication control Operation is possible while minimizing the influence of a failure in the station 32.

As described above, the advantages of using a loop network configuration for the inter-office line between the radio base station and the mobile communication control station compared to the first embodiment are as follows: mobile communication control station 24, mobile communication control station 3
2 will be explained using an example when a failure occurs. Figure 3 (1)
In the first embodiment, when a failure occurs in the mobile communication control station 24, the mobile communication control station 25 has to process all the traffic of the radio base station 28 and the radio base station 29. On the other hand, in the second embodiment shown in FIG. 3(2), when a failure occurs in the mobile communication control station 32, the mobile communication control station 33 processes all the traffic of the radio base station 37 and approximately half of the traffic of the radio base station 38. , the mobile communication control station 35 processes all the traffic of the radio base station 36 and about half of the traffic of the radio base station 39. Therefore, in the first embodiment, one station, the mobile communication control station 25, assists in case of failure of the mobile communication control station 24, whereas in the second embodiment, two stations, the mobile communication control station 33 and the mobile communication control station 35, assist the failure of the mobile communication control station 24. Since the second embodiment assists in the case of a failure in the mobile communication control station 32, the burden on the mobile communication control station that assists in the failure is lighter, so when considering the mobile communication network as a whole, the second embodiment is better than the first embodiment.
It can be said that the processing capacity is higher.

(Embodiment 4) FIG. 4 shows an embodiment in which multiple wireless base stations belong to each other. The multiple assignment of radio base stations is an extension of the dual assignment of radio base stations shown in the second embodiment, and instead of assigning a radio base station to two mobile communication control stations, the radio base station 43, Each radio base station 44 is assigned to a plurality of mobile communication control stations 40 to 42, respectively, and the advantages of dual assignment, such as load distribution of upper-level nodes and improvement of network reliability, are more reliably achieved. That is.

(Effects of the Invention) As described in the embodiments above, by configuring the network such that a radio base station belongs to multiple mobile communication control stations, it is possible to minimize the effects of a failure of a mobile communication control station. At the same time, it is possible to distribute the unbalanced load on mobile communication control stations due to differences in the traffic of radio base stations, and it is possible to improve the reliability of the mobile communication network as a whole.

[Brief explanation of drawings]

Figure 1 is a diagram showing the configuration of a mobile communication network when multiple membership is considered; Figure 2 is a diagram showing the means for selecting a wireless base station or a communication line in a dual membership mobile communication network; Figure 3 4 is a diagram showing dual assignment of radio base stations in a mobile communication network, FIG. 4 is a diagram showing multiple assignment of radio base stations in a mobile communication network, and FIG. 5 is a diagram showing a conventional mobile communication network configuration. 1, 10.11.18.19.24.25.26.2
7.32.33.34, 35.40.4],. 42...Mobile communication control station, 2, 3.4, 1
2, 23, 28, 29, 30, 31, 36, 37, 38
, 39, 43゜44... Radio base station, 5, 6.7.8... Mobile station, 9... General public network, 13, 14... ...mobile communication line control line, 15,
16...Communication line, 17...Mobile communication control station control line, 2
0.21... Communication line control panel, 22...
...Radio base station processing equipment.

Claims (1)

[Scope of Claims] A plurality of radio base stations and a plurality of mobile communication control stations are installed, and communication lines and mobile communication line control lines are provided between the radio base stations and the mobile communication control stations to communicate. In a mobile communication system, communication lines from the radio base station are distributed and accommodated in a plurality of mobile communication control stations, and a mobile communication line is transferred between the mobile communication control station in which the communication lines are accommodated and the radio base station. A method for configuring a mobile communication network, comprising a communication line control line, and a radio base station side designating the communication line with a mobile communication control station to perform communication.