JPH0993641A - Radio channel blocking control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of radio signals by storing a block request to a block request section, editing plural block requests having been stored into one block request signal when a time count section expires so as to send/ receive a signal. SOLUTION: On the occurrence of a fault in a mobile communication exchange 100, the exchange 100 edits plural block requests into one block request signal to send the signal to radio base controllers 201-20n. On the occurrence of a highway fault in the inside of the mobile communication exchange 100, plural block requests take place in a radio base station controller 20i, when a time count section 112 expires, the block request stored in a block request storage section 113 is edited into one block signal to send/receive a signal, then the number of radio signals is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless line blocking control system for blocking a wireless line between a mobile communication switching system and a wireless base station controller.

In recent years, with the progress of semiconductor technology, semiconductors for the radio frequency band have been obtained at low cost, and mobile communication systems using such elements, such as automobile phones, have become widespread.

FIG. 5 is a diagram for explaining a mobile communication system. Reference numeral 100 is a mobile communication switching system on the subscriber level, and 201 to 20n are radio base station control devices. The radio base station control devices 201 to 20n respectively control a plurality of control zones CZi1 to CZin (i = 1 to n), and for example, a mobile terminal 300 such as a car phone.
When performing communication while moving in the control zones CZi1 to CZin (i can also change), with the terminal 300 moving via the wireless transceiver that covers the control zones CZi1 to CZin. Communicating.

FIG. 6 is a diagram for explaining the highway of a digital exchange. In the digital exchange, the network for connecting the terminals to each other is composed of a communication path memory 131 using a random access memory.

Read / write of such a speech path memory 131
The write address is controlled by the control memory 132, and for example, random writing and sequential reading are performed to interchange the time slots and execute the exchange processing.

Data input / output to / from the speech path memory 131 as described above is performed by multiplexing voice data from a plurality of terminals and lines, for example, an input highway 133 of 2 Mbps,
It goes through the exit highway 134. D indicates voice data on the highway, and shows an example in which the time slots of the voice data D are exchanged.

In such a mobile communication switching system 100, when a highway failure occurs, a plurality of voice data are accommodated in the highway. Therefore, not only one line but a plurality of lines are used. It becomes impossible.

There is a demand for a mobile communication switching system that can block a plurality of lines by transmitting and receiving a block signal once when a plurality of lines become unavailable.

[0009]

2. Description of the Related Art FIG. 7 is a block diagram of a conventional mobile communication exchange. The figure shows a mobile communication system including a central control unit 110 for controlling exchange processing of mobile communication, a main storage unit 120 for storing exchange programs and station data, and a line connection unit 130 for connecting designated terminals to each other. Exchange 1
00, and the failure monitoring unit 1 in the central control unit 110.
11, a block request sending unit 115 is provided.

The fault monitoring unit 111 is a mobile communication switching system 1.
00, the failure information is output to a maintenance console (not shown) and a blocking request signal is sent to the radio base station controllers 201 to 20n.

Here, when the generated fault is a highway fault, the highway is composed of a plurality of time slots. Therefore, even if one highway fails, a plurality of radio lines under it are blocked. For this reason, a plurality of blocking requests are generated.

Here, one radio base station controller 20i
When a plurality of blocking requests are generated for (one of 201 to 20n is 20i), the blocking request signal is edited for each blocking request, and the wireless base station controller 2
The blocking request signal is transmitted to the 0i multiple times. Further, the radio base station control device 20i which has received the plurality of blocking request signals,
A response signal is returned for each blocking request signal.

[0013]

In the above-mentioned conventional mobile communication switching system 100, when a failure occurs in the highway and a blocking request is issued to a plurality of lines, a blocking request signal is issued for each blocking request of one line. Edited and sent to the radio base station controller 20i. In addition, since the response signal corresponding to the blocking request signal is also returned in correspondence with the blocking request signal for each line, the number of wireless signals related to the occurrence of a failure increases, and the mobile communication switching system 100 and the wireless base station control device 20i,
Alternatively, the signal link between the radio base station controller 20i and the base station (not shown) may be compressed, and the utilization efficiency of the air interface may decrease.

According to the present invention, when a blocking request for a plurality of lines is generated due to a failure, the blocking requests are accumulated for a predetermined time, and the accumulated blocking requests are edited into one blocking request signal and moved. An attempt is made to realize a wireless line blockage control system in which signals are exchanged between a switch for body communication and a wireless base station controller.

[0015]

Means for Solving the Problems FIG. 1 is a block diagram for explaining the principle of the present invention.
Reference numeral 100 in the figure includes a central controller 110 for controlling mobile communication exchange processing, a main memory 120 for storing exchange programs and station data, and a line connection unit 130 for connecting designated terminals to each other. It is an exchange for mobile communication.

Further, the central control unit 110 has a fault monitoring unit 111 for monitoring the fault of the mobile communication switching system 100.
The failure monitoring unit 111 includes a blocking signal sending unit 115 that sends a blocking request signal of the line to the radio base station controllers 201 to 20n when the failure is detected by the failure monitoring unit 111.

In the present invention, the central controller 110.
In addition, the fault monitoring unit 111 is activated by the first fault detection, and the time counting unit 112 is timed out when a predetermined time is counted, and the time counting unit 112 is set after the fault monitoring unit 111 detects the first fault. Blocking request storage unit 113 that stores the blocking request that occurred until the timeout
In addition, when the time counting unit 112 times out, a blocking signal editing unit 114 that edits a plurality of blocking requests stored in the blocking request storage unit 113 into one blocking request signal is provided, and in the mobile communication switching system 100, When a failure occurs, the plurality of blocking requests are edited into one blocking request signal and sent to the radio base station controllers 201 to 20n.

For example, when a highway failure occurs inside the mobile communication switching system 100, a plurality of blocking requests are issued to one radio base station controller 20i (i = 1 to n). Such a plurality of generated blocking requests are accumulated for a predetermined time, and when the time counting unit 112 times out, the blocking request stored in the blocking request storage unit 113 is edited into one blocking signal. Radio base station controller 20i
By sending the signal to the device, it is possible to reduce the number of times of transmitting and receiving the signal related to the blockage. (Claim 1) A block signal comparison unit is provided in the mobile communication switching system 100, and the block signal comparison unit compares the block request signal sent with the response signal.
The blockage request signal is edited again and transmitted. (Claim 2) The mobile communication exchange 100 is provided with a counting unit, and the counting unit counts up the number of blocking requests to be stored in the blocking request storage unit 113. When a predetermined value is reached, the blocking request storage unit 1
The plurality of blocking requests stored in 13 are edited into one blocking request signal and transmitted. (Claim 3) The blocking release request storage unit is provided in the mobile communication switching system 100, and the blocking release request when the failure is recovered is
Similar to the blocking request, a plurality of blocking release requests are edited into one blocking release request signal and transmitted. (Claim 4) Each of the radio base station control devices 201 to 20n is provided with a configuration assigned to the mobile communication switching system, and a plurality of blockage requests from the radio base station control device 20i are edited into one blockage request signal. To send. (Claim 5)

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 2 is an operation flowchart of the present invention. The flowchart in the figure is a flowchart corresponding to claim 1 and claim 2, and the flow of processing will be described with reference to the figure.

STEP (hereinafter referred to as S) 1; The fault monitoring unit 111 monitors the mobile communication switching system 100. S2: It is determined whether the clock unit 112 has timed out.

S3: If the time-out has not occurred, the mobile communication switching system 100 is continuously monitored for a failure. S4: When a failure occurs, the blocking request for the failure is stored in the blocking request storage unit 113, the process returns to S1, and the monitoring is continued.

S5: If the time counting unit 112 times out in S2, the blocking request stored in the blocking request storing unit 113 is edited by the blocking request editing unit 114 into one blocking request signal.

S6: The edited blocking request signal is sent from the blocking request sending unit 115 to the radio base station controller 20i. S7: Confirm the response signal from the radio base station controller 20i and the blocking request signal sent.

S8: If there is no response to the blocking request, the process returns to S5 to edit the blocking request signal for which there is no response and to retransmit. If there is a response to all the blocking requests, the blocking process ends.

FIG. 3 shows an embodiment of the data structure of the blocking request of the present invention. The blocking request data consists of the following items. BCEN; base station control device number CZN; CZ number CHN0; start channel number CHN; blocked channel number MBR; presence or absence of response signal The fault monitoring unit 111 of the mobile communication switching system 100 monitors whether or not a fault has occurred. When a failure occurs, the timer unit 112 is activated, and the generated blocking request is stored in the blocking request storage unit 113 until the timer unit 112 times out.
The data is accumulated in the format shown in.

FIG. 4 shows an embodiment of the format of the blocking request signal of the present invention. When the time counting unit 112 times out, the blocking request accumulated in the blocking request storage unit 113 is edited in the format shown in the figure for each base station controller 20i.

The blocking request signal is composed of the following items. MSG; message type EMA; urgent / non-urgent CZN; CZ number CHN0; start channel number CHN; blocked channel number Here, the message type indicates the type of blocking request and blocking release request, and urgent is urgent depending on the type of failure. Shows the degree of urgency of whether or not processing is performed with the first priority. CZ
N, CHN0, and CHN are the same as in FIG.

When the block request signal is transmitted to the radio base station controller 20i in the block request signal format shown in FIG. 4, the radio base station controller 20i executes block processing for the designated line, and the mobile unit A response signal is sent to the communication exchange 100.

The mobile communication switching system 100 analyzes the received response signal, confirms that the line which issued the blocking request is blocked, and writes it in the MBR column in FIG. The mobile communication switching system 100 uses the block request MB of FIG.
Check the R in the block signal comparison section, and for the control zone number / channel number where the response signal has not returned,
The blocking request signal is edited again and sent to the base station controller 20i.

In the above-described embodiment, an example in which a failure occurs and the line is blocked has been described. However, when the failure is recovered and the line is blocked, a cancellation request is issued to a plurality of circuits. Therefore, the release request is stored in the blockage release request storage unit in the same format as in FIG. 3, and the plurality of blockage release requests are edited into one blockage release request signal due to the time-out of the clock unit 112, and the wireless base station It can also be sent to the control device 20i.

Further, the timer unit 11 described in the embodiment.
2 is composed of a counting unit, and when the first blocking request is generated, the counting unit is activated to count up the blocking request stored in the blocking request storage unit 113, and when the stored blocking request reaches a specified number. It is also possible to edit a plurality of blockage requests into a single blockage request signal and send it out. Furthermore, by using the time counting unit 112 and the counting unit together, the blockage request signal of time and blockage request number can be transmitted. It is also possible to edit.

In the above embodiment, the example in which the block request signal is transmitted from the mobile communication switching system 100 to the radio base station controller 20i has been described.
It is also possible to edit the plurality of blocking requests generated on the side of the radio base station control device 20i into one blocking request signal and send it by adding the configuration provided in the mobile communication switching system 100 to.

[0033]

According to the present invention, when a blocking request for a plurality of lines is generated due to a highway failure of a mobile communication switching system, the blocking request storage unit stores the generated blocking request until the timekeeping section times out. When the timekeeping unit times out, the plurality of blocking requests stored are edited into one blocking request signal and signals are exchanged between the mobile communication exchange and the radio base station controller. Because
The number of wireless signals can be reduced, and the air interface can be effectively used.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating the principle of the present invention.

FIG. 2 is an operation flowchart of the present invention.

FIG. 3 is an embodiment of a data structure of a blocking request according to the present invention

FIG. 4 is an embodiment of a blockage request signal format of the present invention.

FIG. 5 illustrates a mobile communication system.

FIG. 6 is a diagram illustrating a highway of a digital exchange.

FIG. 7 is a block diagram illustrating a conventional mobile communication exchange.

[Explanation of symbols]

 100 Mobile Communication Switch 110 Central Control Unit 111 Fault Monitoring Unit 112 Clock Unit 113 Blocking Request Storage Unit 114 Blocking Request Editing Unit 115 Blocking Request Sending Unit 120 Main Storage Device 130 Line Connection Unit 131 Channel Memory 132 Control Memory 133 Input Highway 134 outgoing highway 201 to 20n base station control device 300 terminal CZ11 to CZnn control zone D voice data

Front Page Continuation (71) Applicant 000231914 Japan Information and Communications Consulting Co., Ltd. 1-15-9 Shibuya, Shibuya-ku, Tokyo (72) Inventor Kozo Akutsu 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Within Fujitsu Limited (72 ) Inventor Juichi Tsuboya, Toranomon 2-10-1, Toranomon, Minato-ku, Tokyo NTT Mobile Communications Network Co., Ltd. (72) Inventor Osamu Nagumo 5-7-1, Shiba, Minato-ku, Tokyo NEC Corporation (72) Inventor Takuro Yamane 1-15-9 Shibuya, Shibuya-ku, Tokyo Japan Information and Communications Consulting Co., Ltd.

Claims (5)

[Claims] 1. A wireless line blocking control system for blocking a wireless line between a mobile communication switching system and a wireless base station controller, and a fault monitoring unit for monitoring the occurrence of a fault, and the fault monitoring unit detects a fault. In this case, the failure monitoring unit is activated by the first failure detection in the central control unit of the mobile communication switching system including the blocking request sending unit that sends the blocking request signal of the line to the radio base station controller. , A timekeeping unit that times out when a predetermined time is timed, and a blocking request storage that stores a blocking request that occurs between the time when the fault monitoring unit detects the first failure and the timekeeping unit times out. And a blocking signal editing unit that edits a plurality of blocking requests stored in the blocking request storage unit into one blocking request signal when the timekeeping unit times out, In the moving object communication exchange, if a failure occurs, edit multiple occlusion requests into a single obstruction signal, a radio line close control system, characterized by sending to the radio base station controller. 2. The mobile communication switching system according to claim 1, wherein the blocking signal edited by the blocking signal editing unit is sent to the radio base station controller via the blocking request sending unit,
A block signal comparison unit that receives the response signal and compares it with the transmitted block signal is provided, and the block signal editing unit re-edits and retransmits the block signal for a line that does not respond to the block signal that has been transmitted. The wireless line blocking control system according to claim 1, wherein the wireless line blockage control system is provided. 3. The mobile communication switching system according to claim 1, further comprising a counting unit that counts up the number of stored blocking requests to a predetermined value when storing the blocking request in the blocking request storage unit. Unit counts up the number of blocking requests stored in the blocking request storage unit, and when the count value of the counting unit reaches a predetermined value, one blocking request stored in the blocking request storage unit is blocked. 2. The wireless line blockage control method according to claim 1, wherein the signal is edited and transmitted to the wireless base station controller. 4. The mobile communication switching system according to claim 1, wherein a blockage is released from the time when the fault monitor detects the first blockage release request due to restoration of the fault until the time counting unit times out. A blocking release request storage unit for storing requests is provided, and when a failure is recovered and a blocking release request occurs in the mobile communication switching system, a plurality of blocking release requests are edited into one blocking signal, and the wireless base station The wireless line blockage control system according to claim 1, wherein the wireless line blockage control system sends the signal to a control device. 5. The radio base station control device according to claim 1, wherein the mobile communication switching device according to any one of claims 1 to 4 is provided with a configuration provided to the mobile communication exchange. Blockage control method.