JP2818575B2 - Wireless base station remote reset system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote reset system for a radio base station, and more particularly to a remote reset system for resetting a radio base station when a failure occurs in a radio base station of a mobile communication system.

[0002]

2. Description of the Related Art FIG. 4 is a diagram showing a sequence chart of a restart operation of a radio base station in a conventional radio base station remote reset system.

When a failure occurs in a radio base station (hereinafter referred to as "BTS") 2, a data unit device (hereinafter referred to as "DU") 21 transmits a BTS failure report to a maintenance monitoring center (hereinafter referred to as "O").
MC ”). The OMC 1 transmits a remote reset message (a reset instruction including a program area) to the BTS 2 irrespective of the cause of the failure. The DU 21 receiving this remote reset message performs a BTS reset. Then, the OMC 1 transmits a program download message in which the program contents are written to the central monitoring and control device (hereinafter referred to as “CP”) 22. CP22 that received this program download message
Is a system data memory device (hereinafter referred to as "SDM")
23, and the SDM 23 transmits the message to CP2.
The program obtained from the program download message received from 2 is copied to the program area 24. The CP 22 outputs a program download ACK, which is an acknowledgment to the program download message, as an O.
Send to MC1. Thereafter, the CP 22 loads the program stored in the program area 24, executes it, and starts normal operation.

Conventionally, as a technique for updating such a program, for example, a technique described in Japanese Patent Application Laid-Open No. 4-148235 is known. An external storage control device including at least two clusters each including a service processor and at least one main processor, capable of independently turning on and off the power of each cluster; In an external storage device including an auxiliary storage device in which a microprogram to be loaded is stored, a first storage area in which a first microprogram affecting both operations of the two clusters is stored, and a specific cluster. And a second area for storing a second microprogram that affects the operation of the first cluster. When one of the specific clusters is powered on, the second microprogram is loaded and the two clusters are simultaneously powered on. If it is loaded, load the first microprogram It had.

[0005]

In the above-mentioned conventional method, a failure occurs in a BTS (radio base station), and a BTS is transmitted from a DU (data unit device) to an OMC (maintenance monitoring center).
When the TS failure report performed an uplink BTS reset, it was always a reset including the program area. Therefore, B
When the TS reset is performed, the program in the program area is erased and it is necessary to download the program again from the OMC even if there is no abnormality in the program. In such a case, it takes extra time to restart the BTS. Problem.

The present invention has been made in view of the above points, and has as its object to reduce the time required for restarting a BTS when there is no abnormality in a program when a BTS failure report performs an up BTS reset. I do.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a radio base station which receives an instruction from a maintenance and monitoring center when a fault occurs in a radio base station which performs radio communication with a radio mobile station. In the remote reset system of the radio base station, the radio base station reports the occurrence of the fault to the maintenance monitoring center together with the cause of the fault,
The maintenance monitoring center that has received the report of the occurrence of the failure selects either the first remote reset signal or the second remote reset signal based on the cause of the failure and transmits the signal to the radio base station, The radio base station performs a reset including an internal program area when receiving the first remote reset signal, and performs a reset including no internal program area when receiving the second remote reset signal. Do.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a remote reset system for a radio base station according to the present invention.

A BTS (wireless base station) 2 is connected to an OMC (maintenance monitoring center) 1 by a Lap-D protocol.
The program executed by the BTS2 is downloaded from the OMC1 to the BTS2 using the Lap-D protocol. The BTS 2 is a DU (data unit device) 21
, A CP (Central Monitoring and Control Device) 22, an SDM (System Data Memory Device) 23, and a program area 24.

Here, with reference to FIG. 2, an operation at the time of initial startup of the BTS 2 will be described.

FIG. 2 is a diagram showing a sequence chart of the operation at the time of initial startup of the radio base station.

OMC1 that recognizes the start of BTS2
Downloads a program to CP22 in BTS2. CP22 that received this program
Sends the message transparently to the SDM 23,
3 copies the program contents from the message received from the CP 22 to the program area 24. The CP 22 sends a program download ACK, which is an acknowledgment of the program download, to the OMC 1. Thereafter, the CP 22 loads the program stored in the program area 24, executes it, and starts normal operation.

Next, the operation of this embodiment will be described with reference to FIGS.

FIG. 3 is a diagram showing a sequence chart of a restart operation of the radio base station in the remote reset system of the radio base station according to the present embodiment, in which a reset not including the program area is performed. It is.

FIG. 4 is a diagram showing a sequence chart of a restart operation of the radio base station in the conventional radio base station remote reset system as described in the above-mentioned conventional technique. FIG. 4 is a sequence chart of a restart operation of the wireless base station in the remote reset system of the wireless base station in the case where a reset including a program area is performed, which is similar to FIG. 4. Will be explained.

In this embodiment, two types of remote reset messages are prepared when the OMC 1 resets a faulty BTS 2. And OMC1
When the BTS failure is received from the BTS 2 and the content of the BTS failure is a failure of the CP 22 or the SDM 23, a remote reset message including the program area 24 among the two types of remote reset messages is transmitted to the BTS 2, Failure content is CP22 or SDM
In the case of a failure other than 23, a remote reset message not including the program area 24 among the two types of remote reset messages is transmitted to the BTS2.

First, a description will be given with reference to FIG. If the cause of the BTS failure report is, for example, a failure of DU21, D
U21 reports this to OMC1. O
MC1 sends a remote reset message (not including the program area) to BTS2. Upon receiving this message, the CP 22 performs a remote reset that does not include the program area 24. Thus, program area 2
4 does not include O, as shown in FIG.
The program download from the MC 1 can be omitted, and the time required for restarting the BTS 2 can be reduced.

Note that when such a program download is omitted, the operator of the OMC 1 checks whether the BTS 2 has become normal only by a remote reset that does not include the program area 24.
If an abnormality is found in the BTS 2, a remote reset including the program area 24 may be performed to restart the BTS 2.

Next, a description will be given with reference to FIG. If the cause of the BTS failure report is, for example, a CP22 failure, the DU
21 notifies the OMC 1 of a failure report to that effect. OM
C1 sends a remote reset message (including the program area) to BTS2. The DU 21 receiving this message performs a remote reset including the program area 24.

[0021]

As described above, according to the present invention,
From the OMC (Maintenance Monitoring Center)
When performing a reset for the (wireless base station), the remote reset message (reset including the program) and the remote reset message (reset not including the program area) are used separately, so that the BTS restart time is used. Was shorter than before.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a remote reset system for a wireless base station according to the present invention.

FIG. 2 is a diagram showing a sequence chart of an operation at the time of initial startup of a wireless base station.

FIG. 3 is a diagram showing a sequence chart of a restarting operation of the wireless base station in the remote resetting system of the wireless base station according to the present embodiment, and is a diagram in a case where a reset that does not include a program area is performed.

FIG. 4 is a diagram showing a sequence chart of a restart operation of the wireless base station in the conventional wireless base station remote reset system.

[Explanation of symbols]

 1 OMC (Maintenance and Monitoring Center) 2 BTS (Wireless Base Station) 21 DU (Data Unit Device) 22 CP (Central Monitoring and Control Device) 23 SDM (System Data Memory Device) 24 Program Area

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H04B 7/24-7/26 102 H04Q 7/00-7/38 H04B 17/00

Claims (3)

(57) [Claims] 1. A remote reset system for a radio base station, which resets the radio base station according to an instruction from a maintenance monitoring center when a failure occurs in a radio base station that performs radio communication with a radio mobile station. Reports the occurrence of the fault to the maintenance and monitoring center together with the cause of the fault, and the maintenance and monitoring center receiving the report of the occurrence of the fault sends a first remote reset signal or a second remote reset signal based on the cause of the fault. Selecting any one of the remote reset signals and transmitting the selected signal to the wireless base station, the wireless base station performs a reset including an internal program area when receiving the first remote reset signal, 2. A remote reset system for a radio base station, wherein the remote reset signal does not include an internal program area when the remote reset signal is received. 2. The maintenance and monitoring center sends the first remote reset signal to the wireless base station when the cause of the failure is a failure of a central monitoring and control device or a system data memory device in the wireless base station. Transmitting, if the cause of the failure is a failure other than the central monitoring and control device and the system data memory device in the radio base station, the second
The remote reset system for a wireless base station according to claim 1, wherein the remote reset signal is transmitted to the wireless base station. 3. When the first remote reset signal is transmitted, the maintenance monitoring center transmits a program stored in the program area to the radio base station after the reset in the radio base station is completed. The remote reset system of a wireless base station according to claim 1 or 2, wherein the transmission is performed.