KR200292708Y1 - common FPGA memory devic of the subscriber board using a backplane - Google Patents

Abstract

The present invention is a base station system for relaying a mobile communication terminal, a plurality of subscriber boards having a plurality of FPGAs for processing the call signal of the mobile communication terminal, and the plurality of subscriber boards are installed on the backplane is inserted into each subscriber Provided is a common FPU memory device of a subscriber board using a backplane including a backplane memory board that selects and switches an FPGA provided in the board and provides configuration data stored in the selected corresponding FPGA.

The present invention as described above, by installing the memory used for the configuration of the FPGA of the mobile communication subscriber board in common on the backplane to interlock with the FPGA of each subscriber board, each subscriber memory for the configuration of the FPGA Since it is not necessary to install each board, the manufacturing cost of the subscriber board can be considerably reduced, and the configuration data of the FPGA is provided with a single memory, which makes it easy to change and manage the stored data. The convenience of management can also be maximized.

Description

Common FPGA memory devic of the subscriber board using a backplane

The present invention relates to a common FPU memory device of a subscriber board using a backplane. In particular, the memory used for the configuration of the FPGA of a mobile communication subscriber board is commonly installed on the backplane and interworked with the FPGA of each subscriber board. The present invention relates to a common FPU memory device of a subscriber board using a backplane.

In general, mobile communication systems have been rapidly developed as the industrial society has spread rapidly. Especially in the early 1980s, in North America, the service area was divided into hexagonal cells of several km to several ten kilometers in diameter, and then in the geographically separated cells. The mobile communication system has grown rapidly by using a cellular mobile communication system that uses the same frequency channel repeatedly and implements a radio channel switching function between cells as the subscriber moves.

However, such a mobile communication system generally includes a terminal for transmitting and receiving communication signals while the user moves and a base station for relaying corresponding communication signals to facilitate communication between the plurality of terminals. In addition, the base station as described in Figure 1 is a control board for controlling the call signal transmitted and received through the interface board 70 and the interface board 70 to interface the radio call signals transmitted from a plurality of terminals as shown in FIG. Board 71 and a plurality of subscriber boards (72A-N) for processing the call signal transmitted from a plurality of terminals in accordance with the function control signal of the control board 71.

However, in the subscriber board of the conventional base station, the call signal transmitted from the terminal, for example, the first FPGA unit 73 for separating and processing the CDMA data of the terminal, and the call signal output from the first FPGA 73, A second FPGA unit 74 which processes the separated serial CDMA data in parallel and transmits the same to the upper board, and a cone that stores configuration data of the first and second FPGA units 73 and 74. A memory unit 75 for configuration is included.

Here, the configuration memory unit 75 is provided separately for each subscriber board (72A-N).

On the other hand, referring to the operation of the mobile communication subscriber board as described above, first, when the base station 76 is initially set up, the first and second FPGA units 73 and 74 of the respective subscriber boards 72A-N are configured. In this case, the first and second FPGA units 73 and 74 apply a high signal to the memory unit 75 through the INIT terminal according to the function control signal of the control board 71. Then, the memory unit 75 loads data necessary for the configuration of the FPGA to the DTATIN stage to start up the first and second FPGA units 73 and 74.

Here, if a call signal is transmitted from the mobile terminal (not shown) after the startup of the FPGA, the call signal is received by the interface board 70 of the adjacent base station 76. Then, the control board 71 of the base station 76 allocates an empty channel of the subscriber boards 72A-N to the currently input call and transmits the received call to the corresponding subscriber board 72A. At this time, the first FPGA unit 73 of the subscriber board 72A separates a call signal, ie, a CDMA signal path PASS, transmitted from the terminal according to the assigned channel control signal to the second FPGA unit 74. Output it. Then, the second FPGA unit 74 converts the serial CDMA signal input from the first FPGA unit 73 into parallel data and outputs the same to the upper board (not shown) to execute a normal channel relay function.

However, in the subscriber board of the conventional mobile communication base station as described above, even though the memory unit for the configuration of the FPGA performs the same function for each individual subscriber board, one subscriber board must be provided for each subscriber board. In addition, since there is a separate configuration memory unit for each individual subscriber board, there is a problem that it is difficult to manage them and change the stored data.

Therefore, the present invention is designed to solve the above-mentioned conventional problems, and installs one configuration memory separately on the backplane that operates with the same function for each subscriber board and uses this memory in common. By performing configuration loading, it is not necessary to install the FPGA configuration memory for each subscriber board, thus providing a common FPU memory device of a subscriber board using a backplane that significantly reduces the manufacturing cost of the subscriber board. Has its purpose.

Another object of the present invention is to provide the configuration data of the FPGA to a single memory, so that it is easy to change and manage the stored data. Accordingly, the subscriber board using the backplane can maximize the convenience of the configuration data management of the FPGA. To provide a common memory device in this fpu.

The present invention for achieving the above object is a base station system for relaying a mobile communication terminal, a plurality of subscriber boards having a plurality of FPGAs for processing the call signal of the mobile communication terminal, and the plurality of subscriber boards are inserted Provides a common FPU memory device of a subscriber board using a backplane including a backplane memory board installed on the backplane to selectively switch the FPGAs provided in each subscriber board and provide configuration data stored in the selected corresponding FPGA. do.

1 is an explanatory diagram illustrating a subscriber board of a conventional base station.

2 is an explanatory diagram for explaining a common FPU memory device of the present invention.

<Detailed Description of Codes>

1: 1st FPGA 2: 2nd FPGA

3A-N: Subscriber Board 4: Backplane Memory Board

5A-N: Connection switch 6: Memory part

7: Selective Logic Unit 8: Base Station

9: Interface Board 10: Control Board

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

The present invention is a plurality of subscriber board (3A-N) and a plurality of subscriber board (3A-N) having a plurality of FPGA (1, 2) for processing the call signal of the mobile communication terminal as shown in FIG. Is composed of a backplane memory board 4 installed on the inserted backplane to switch the FPGAs 1 and 2 provided in each of the subscriber boards 3A-N to provide configuration data stored in the corresponding FPGA.

The backplane memory board 4 is individually connected to the FPGAs 1 and 2 provided in the plurality of subscriber boards 3A-N, respectively, so that the FPGAs 1, 2) a plurality of connection switches (5A-N) for selectively switching and the configuration data stored in accordance with the transmission request signal (INTI) input from the plurality of connection switches (5A-N) corresponding to the FPGA of the subscriber board And a selection logic unit 7 which selects and outputs a plurality of end signals DONE input from the FPGAs 1 and 2 to the memory unit 6.

Here, each of the connection switches 5A-N includes DATAIN- (1-N) and CCLK- (1-N) capable of transmitting and receiving signals to and from the FPGAs 1 and 2 of the plurality of subscriber boards 3A-N. ), INTI- (1-N) and EN- (1-N).

In addition, the base station system 8 including the present invention is a control board for controlling a call signal transmitted and received through the interface board (9) and the interface board (9), which is typically interfaced with a radio call signal transmitted from a plurality of terminals Also includes (10).

Next, the operation and effects of the present invention having the configuration as described above will be described.

According to the present invention, when the base station 8 is first set up, the first and second FPGA units 1 and 2 of each subscriber board 3A-N execute the configuration. In this case, the control board 10 The first and second FPGA units 1 and 2 transmit the high signal to the INIT terminal of the corresponding connection switch 5A-N connected to the backplane memory board 4 through the INIT terminal. Connected. For example, in the case of the FPGAs 1 and 2 of the subscriber boards 3A-N, a signal is applied to the INIT-1 terminal of the connection switch 5A-N through the INIT-1 terminal. Then, the connection switch 5A-N transmits the input high signal to the memory unit 6 through the INIT terminal of the rear stage. Accordingly, the memory unit 6 recognizes the input high signal of the corresponding connection switch 5A-N, and stores the configuration data stored therein via the corresponding connection switch 5A-N through the DTAT stage. Load into the FPGA (1, 2) of the subscriber board (3A-N).

At this time, when data loading is completed during the configuration data loading process, the corresponding FPGAs 1 and 2 output a high signal to the selection logic unit 7 through the DONE stage. Then, the selection logic unit 7 selects one of the DONE signals currently input as the high signal from each of the FPGAs 1 and 2 of the plurality of subscriber boards 3A-N and inputs it to the memory unit 6. Then, the memory unit 6 finishes loading the configuration data currently being transmitted to the FPGAs 1 and 2.

For example, when the FPGA of the subscriber board 3N receives configuration data from the memory unit 6 through the connection switch 5N and the loading of the configuration data is completed, the FPGA of the subscriber board 3N is DONE. A high signal indicating that the loading of the configuration data currently loaded through the -N stage is completed is output to the selection logic unit 7. Then, the selection logic unit 7 outputs the end signal DONE-N to the memory unit 6 according to the high signal input through the DONE-N stage of the FPGA. The memory unit 6 terminates the loading of configuration data transmitted to the FPGA through the connection switch 5N according to the input termination signal DONE-N.

On the other hand, when a call signal is transmitted from the mobile terminal (not shown) while the FPGA is completely started up by the FPGA configuration process, the call signal is received by the interface board 9 of the adjacent base station 8. . Then, the control board 10 of the base station 8 allocates an empty channel of the subscriber boards 3A-N for the currently entered call and transmits the received call to the corresponding subscriber boards 3A-N. At this time, the first FPGA unit 1 of the subscriber boards 3A-N separates the call signal, ie, the CDMA signal path PASS, transmitted from the terminal according to the assigned channel control signal. ) Then, the second FPGA unit 2 converts the serial CDMA signal input from the first FPGA unit 1 into parallel data and outputs the same to the upper board (not shown) to execute a normal channel relay function.

As described above, the present invention installs only one configuration memory on the backplane and operates the configuration loading of each subscriber board by using this memory in common. It is not necessary to install the configuration memory for each subscriber board, which has the advantage of significantly reducing the manufacturing cost of the subscriber board.

In addition, according to the present invention, since configuration data of the FPGA is provided as a single memory, it is easy to change and manage the stored data, thereby maximizing convenience of configuration data management of the FPGA.

Claims (2)

In the base station system for relaying a mobile communication terminal, A plurality of subscriber boards having a plurality of FPGAs for processing call signals of the mobile communication terminal, and a plurality of subscriber boards installed on the backplane into which the plurality of subscriber boards are inserted, and selectively switching the FPGAs provided in each subscriber board and selecting the selected corresponding FPGAs. A common FPU A memory device of a subscriber board using a backplane, characterized in that it comprises a backplane memory board for providing configuration data stored as. The plurality of connection switches of claim 1, wherein the backplane memory boards are individually connected to FPGAs provided in the plurality of subscriber boards and selectively switch FPGAs of the plurality of subscriber boards. And a memory unit for loading the configuration data stored in accordance with the transmission request signal to the corresponding FPGA of the subscriber board, and a selection logic unit for selecting and outputting a plurality of end signals inputted from the FPGA to the memory unit. Common FPS A memory device of subscriber board using.