JP2954202B1 - Program transfer method and transfer storage method in mobile communication base station system - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To reduce a transfer time in a program transfer method in a mobile communication base station system having a maintenance center terminal, a base station control device, a base station and a maintenance tool. SOLUTION: In a program transfer method in a mobile communication base station system having a maintenance center terminal, a base station controller, a base station and a maintenance tool, the maintenance center terminal, the base station controller, the base station and the maintenance tool are: Compress the program to generate a compressed file,
Block the compressed file to generate a transfer block,
Compression means for compressing the transfer block to generate a compressed block; decompressing the compressed block to restore the transfer block; decompressing the compressed file based on the transfer block; Decompression means for restoring the program and transmission / reception means for transmitting and receiving the compressed block

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a program transfer method and a transfer storage method in a mobile communication base station system having a maintenance center terminal, a base station control device, a base station, and a maintenance tool.

[0002]

2. Description of the Related Art A prior art disclosed in Japanese Patent Application Laid-Open No. 8-274883 is a mobile communication system having a transfer device, a base station controller, and a plurality of base station modems connected to the base station controller. , The transfer device and the base station control device have a function of compressing a data file to be transferred to a corresponding base station control device and a base station modulation / demodulation device, respectively, and the base station control device and the plurality of base stations The modem has a function of decompressing the data files sent from the transfer device and the base station controller, respectively.

In the prior art, there is only a download method (from the transfer device to the base station modem) in the compression transfer, and there is no upload method on the reverse route. Also, the compression and decompression methods are fixed.
When an update operation due to the function update or the like occurs, the medium storing the function must be replaced.

[0004]

The first problem is that the program transfer time by remote operation from the maintenance center terminal, the base station control device, and the maintenance tool is increased when the file size to be transferred is large or the transmission distance is long. It will take a long time. Since the transfer time is long, there is a high probability that the process of rewriting or uploading the program will be interrupted due to a device reset or a transmission line error occurring during transfer.

A second problem is a large amount of signals in program transfer. A program to be downloaded or uploaded is divided into a large number of blocks, and the length of one block is long, which prevents transmission of other types of signals.

A third problem is that when the program size increases with an increase in functions, the program storage memory space in the device becomes insufficient. In the current system, the programs are stored in the storage memory as they are, so if the programs are stored in the program storage memory for each type of program in the device, the required memory space becomes large. I will.

The fourth problem is that the program is compressed and transferred,
If the compression method is fixed for the function that can be compressed and stored, a compression method with higher compression efficiency will appear, and if it becomes necessary to respond to it, the compression and decompression processing at the source and destination will be performed separately. The point that must be updated.

The present invention relates to a program transfer method in a mobile communication base station system having a maintenance center terminal, a base station control device, a base station and a maintenance tool.
The purpose is to reduce the transfer time.

Further, the present invention is to reduce the capacity of a program storage memory in a program transfer storage method in a mobile communication base station system having a maintenance center terminal, a base station control device, a base station and a maintenance tool. Aim.

Further, according to the present invention, there is provided a mobile communication base station system having a maintenance center terminal, a base station control device, a base station, and a maintenance tool, wherein the compression / decompression method is updated. The purpose is to be able to respond even if it is done.

[0011]

When a program is downloaded from a maintenance center terminal or a base station controller to a base station, the download source device first compresses the program itself and then compresses the program into a compressed program. A file header including the information (compression format, program type, version, etc.) is added to the compressed file.

Next, the compressed file is divided into blocks,
Each block is further compressed. A block header including the compression format, program type, and block number is added to the compressed block to form a compressed block. The download source device sends the compressed block.

The base station decompresses the compressed block to decompress the compressed file, and stores the compressed program of the real part of the compressed file in the program storage memory. Decompress the compressed program when running the program.

When downloading to each card in each device, a compressed block is generated based on the compressed program in the same manner as described above, and the compressed block is downloaded.

Since the program storage memory has the current spare configuration, it is tested whether or not the program can be updated normally at the time of rewriting the program (already functioned).

Since the compression / decompression program itself used for compression / decompression can be compared with the download, the compression / decompression method is also updated. In other words, when downloading the compression / decompression program, use the compression / decompression method at that time, decompress the compression / decompression program, and replace the current compression / decompression program with the decompressed compression / decompression program. The updated compression / decompression method can be used.

[Operation] In a mobile communication system such as a base station modem, a small base station, etc., a base station control device and a maintenance center terminal perform a program download operation.
First, an information section such as a compression method to be compressed is temporarily created as file header information together with header information such as the type of the program, program size, version, and checksum to be inputted.

Next, the input program is compressed, information such as the compressed program size and checksum is recorded in the temporarily created file header information, and the compressed file is attached. This file is set as one file and temporarily reserved.

In dividing a program to a base station and transferring a signal, the file secured by the above operation is further divided into blocks, which are further compressed. In this case as well, the compression format, the program type, and the block number are attached as signal information to the signal contents. The base station extracts a "data transfer preparation command (what program will be sent from now on)" signal in the transfer sequence from the file header information.

On the base station side, a "data transfer preparation command" is used to determine the necessity of updating the program, whether compression is possible, and the like, and a "data transfer preparation response" is returned to the base station controller / maintenance center with a determination result. Return by signal.

After the program compression transfer, the base station decompresses based on the compression format, starts the transferred program, checks the checksum, and determines whether there is any error in the program. The judgment result is returned to the center as a signal.

When there is no error in the program, the program is stored in a compressed state in the program storage memory.

[0023]

Embodiment 1 Next, an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, the mobile communication base station system includes a switching network 101, a maintenance center terminal 102, a base station controller 103, a base station 104, and a maintenance tool 105. The maintenance center terminal 102
Perform maintenance of the base station controller 103 and the base station 104,
The base station controller 103 performs maintenance of the base station 104, and the maintenance tool 105 individually maintains the base station 104.

The base station 104 operates between the maintenance center terminal 102 and the base station controller 103, between the base station controller 103 and the base station 104, and between the base station 104 and the maintenance tool 105. The transfer (download and upload) of the program to be used is performed by the transmission path 10
9 on a compressed block basis. The transfer between the maintenance center terminal 102 and the base station 104 is performed via the base station 103, that is, by two transfers.

FIG. 2 is a configuration diagram of the base station 104. In the figure, a base station 104 includes a signal transmission unit 202 for interfacing with a transmission line 209,
Compression / decompression means 203 for decompressing, a program storage memory 204 composed of a non-volatile memory such as an EEPROM for storing a program in a compressed format, a maintenance tool interface 20 having an interface function such as program transfer with the maintenance tool 105
6. DR that temporarily stores the program in the decompressed state
A main memory 207 including a volatile memory such as an AM;
CP that reads and executes programs in main memory
U208. Note that the compression / decompression means 203 is
It may be realized by U208.

FIG. 3 is a configuration diagram of the maintenance center terminal 102, the base station controller 103, and the maintenance tool 105. In the figure, a maintenance center terminal 102 and a maintenance tool 105 include a signal transmission unit 202 for interfacing with a transmission line 209, a compression / decompression unit 203 for compressing / decompressing a program, and a DRAM for temporarily storing a decompressed program. It has a main memory 207 composed of a volatile memory such as a CPU, a CPU 208 for reading and executing a program in the main memory, a recording medium 210 such as a hard disk, and an external interface such as an RS-232C. The compression / decompression means 203 may be realized by the CPU 208.

FIG. 4 is a diagram for explaining a program compression / decompression method performed by the compression / decompression means 203 of the maintenance center terminal 102, the base station control device 103, the base station 104, and the maintenance tool 105. In the figure,
The program 301 before transfer indicates a program in the main memory 207 in an uncompressed state. Maintenance center terminal 102, base station controller 103, and base station 1
04, the external interface 210 and the recording medium 21
0 to the main memory 207 and stored.
The program 301 is compressed by the processing 3-1 in the terminal.

The compression / decompression means 203 is a program 301
Is compressed (process 3-1). The compression format at this time can be controlled by the instruction of the operator. The compressed file 302 is
Compressed program real part 304 and program 301
And the header information 303 including the compression format, the size of the program real part 304, the checksum, and other information.

FIG. 5 is a diagram for explaining a block compression / decompression method performed by the compression / decompression means 203 when a program is transferred between devices. In the figure, a compressed file 302 is converted into a transfer block 402 divided into transfer sizes (process 4-1). Further, each transfer block 402 is converted into a compression block 403 (process 4-3). The transfer block 403 includes a file real part 405 and a block header 4 having a compression format, a compression format, a program type, a block number, and other information.
04. As the compression format at this time, the latest compression format is selected between the devices that perform the transfer, and when the transfer becomes possible, the process proceeds to the transfer process. The transfer is performed sequentially from the first block to the last block between the devices (for example, between the maintenance tool and the base station).

The compression / decompression means 20 of the transfer destination device
3 receives the compressed block 403, determines the compression format, decompresses the compressed block, and restores the transfer block 402 (Process 4-
4). This decompression is performed from the first block to the last block. If the transfer block 402 can be normally restored from the first block to the last block, a response is returned to the transfer source device, and the compressed file 302 is restored based on the transfer block 402 (process 4-2). .

The compression / decompression means 203 of the transfer destination further includes:
The compressed file 302 is decompressed, and the program 301 is restored (processing 3-2). By operating the program 301 or performing checksum verification or the like, it is determined whether there is any abnormality in the program. If there is no abnormality, the decompression is terminated.

The above operation is an operation common to download and upload.

At the base station 104, the downloaded program 301 is stored in the program storage memory 204 in the form of a compressed file 302.

The base station 104 has a main function block and a plurality of sub-function blocks, all of which have the same function. The above-mentioned download is performed by the main function block, and the main function block stores the downloaded program as a sub-function. Broadcast to the function block (re-download). In this case, the main function block also executes processing 4-1 by the compression / decompression means 203 on the compressed file 302 stored in the apparatus.
Then, the transfer block 402 is further compressed in process 4-3 and sequentially transferred to the sub-function block as a compressed block 403 in the apparatus. Each sub-function block at the download destination performs the processing 4-4 and the processing 4-2 to decompress the compressed file, and the program storage memory 20
4 is stored. Then, the program 301 is restored at the time of execution.

[Second Embodiment] Similar to the first embodiment, when a long signal needs to be transferred or when the content of a signal is encrypted (scrambled), compression and scrambling are performed between the devices according to the present invention. By having a decompression algorithm, effective use of the transmission line and confidentiality of the signal are realized.

[0037]

As described above, according to the present invention,
The following effects are obtained.

The first effect is a reduction in the frequency of the quasi-normal processing operation.

The reason is that the program transfer time by remote operation from the maintenance center terminal, the base station controller, and the maintenance tool is long in the past according to the file size and transmission distance to be transferred. Then, by transferring the block-divided / compressed program, the transfer-destination function block may be reset during transfer, or the program may be rewritten due to a transmission path error or the like.
This is because the possibility of interruption of the upload process is reduced.

The second effect is to reduce the load on the transmission line.

This is because the signal amount in the program transfer is reduced by transferring the data after the compression and further the block division / compression.

The third effect is the effective use of the program storage memory in the device.

This is because, although the program storage memory space in the apparatus tends to be insufficient due to the increase in program size accompanying the increase in functions, the compressed file is stored as it is (information such as the compression format). Is added as header information), so that the storage size of one program is reduced.

The fourth effect is that the compression / decompression method can be updated.

The reason is that if the compression method is fixed for a function that can compress and transfer and store a program in the past, if a compression method with higher compression efficiency can be realized, the transfer source and the transfer The previous compression / decompression process had to be updated separately, but after including the compression / decompression function itself in the transferred program, decompressing the transferred program in the old compression / decompression format, This is because a new compression / decompression format can be used and the compression / decompression format can be expanded.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a mobile communication base station system to which the present invention is applied.

FIG. 2 is a block diagram illustrating a configuration of a base station according to an embodiment of the present invention.

FIG. 3 is a block diagram illustrating a configuration of a maintenance center, a base station control device, and a maintenance tool according to the embodiment of the present invention.

FIG. 4 is a diagram for explaining a program compression / decompression method.

FIG. 5 is a diagram illustrating a block compression / decompression method during program transfer.

[Explanation of symbols]

 101 Switching Network 102 Maintenance Center Terminal 103 Base Station Controller 104 Base Station 105 Maintenance Tool 202 Signal Transmission Means 203 Compression / Decompression Means 204 Program Storage Memory 206 Maintenance Tool Interface 207 Main Memory 208 CPU 209 Transmission Line 210 Recording Medium 211 External Interface 301 Program 302 Compressed file 303 File header 304 Program real part 402 Transfer block 403 Compressed block 404 Block header 405 File real part

Claims (7)

(57) [Claims] 1. A program transfer method in a mobile communication base station system having a maintenance center terminal, a base station controller, a base station, and a maintenance tool, wherein the maintenance center terminal, the base station controller, the base station, and the maintenance tool are: Compressing a program to generate a compressed file, blocking the compressed file to generate a transfer block, compressing the transfer block to generate a compressed block, and decompressing the compressed block to generate the transfer block. Decompressing, decompressing the compressed file based on the transfer block,
A program transfer method in a mobile communication base station system, comprising: decompression means for decompressing the compressed file to restore the program; and transmission / reception means for transmitting and receiving the compressed block. 2. A program transfer method in a mobile communication base station system according to claim 1, wherein the compressed file has a program real part and a file header. A program transfer method in a mobile communication base station system, including a size, a version, a checksum, a compression format, a size of the program real part, and a checksum. 3. A program transfer method in a mobile communication base station system according to claim 1, wherein said compressed block has a file real part and a block header, and said block header has a compression format. And a compression format, a program type, and a block number. 4. The mobile communication base station system according to claim 1, wherein the base station has a main function block and a sub function block. A program transfer method in a mobile communication base station system, wherein transfer between a main function block and a sub function block is performed in the form of the compressed block. 5. A mobile device comprising: a program transfer system in the mobile communication base station system according to claim 1; and storage means for storing the compressed file. A method of transferring and storing programs in the mobile communication base station system. 6. A method of transferring a program in the mobile communication base station system according to claim 1 to update a compression method of said compression means and a decompression method of said decompression means. how to. 7. A method for updating a compression method of the compression unit and a decompression method of the decompression unit using a program transfer and storage method in the mobile communication base station system according to claim 5.