KR100681328B1 - Modem platform apparatus for development of wireless terminal - Google Patents

Abstract

A modem platform apparatus for developing a wireless terminal device is provided to enable a main board to perform a terminal modem function for an external system and wireless communication by interworking with a processor board and a DIFU board, thereby shortening a development period for the commercialization of the terminal device by providing a structure that each function of a developed wireless terminal device can be developed and manufactured by an ASIC(Application Specific Integrated Circuit) chip. A modem platform apparatus comprises the followings: a processor board(110) which executes communication applications for an external system and wireless communication and performs a modem control function; a DIFU(Digital Intermediate Frequency Unit) board(120) which performs a filter implementation and signal processing function for processing a baseband signal received from the outside into a DIF(Digital Intermediate Frequency) or a ZIF(Zero Intermediate Frequency); and a main board(100) which performs a terminal modem function for the external system and the wireless communication by interworking with the processor board(110) and the DIFU board(120).

Description

Modem platform device for wireless terminal device development

1 is a block diagram schematically illustrating a modem platform device for developing a wireless terminal according to an embodiment of the present invention.

2 is a block diagram illustrating in detail a modem platform device for the development of a wireless terminal device according to an embodiment of the present invention.

3 is a block diagram schematically illustrating an embodiment in which a main device is applied to a modem platform device for developing a wireless terminal according to an embodiment of the present invention.

4 is a block diagram illustrating a modem platform device for developing a wireless terminal to which a main device for developing and manufacturing an ASIC chip according to an exemplary embodiment of the present invention is applied.

5 is a block diagram illustrating in detail a modem platform device for an efficient structure and an implementation environment for the development of a wireless terminal device according to an embodiment of the present invention.

6 is a diagram showing a first implementation of a modem platform device for developing a wireless terminal device according to an embodiment of the present invention.

7 is a view showing a second implementation of the modem platform device for wireless terminal device development according to an embodiment of the present invention.

The present invention relates to a modem platform device for developing a wireless terminal device, and more particularly, to an efficient structure and implementation environment for developing a terminal device.

In the next generation wireless communication system, studies are being actively conducted to secure higher data rates by using multiple-input multiple-output (hereinafter referred to as 'MIMO'). However, the development of the terminal device applying the MIMO technology is insufficient.

In addition, in the next generation wireless communication system, modem development capable of transmitting and receiving data of several tens of Mbps or more for demanding data rates of more than tens of Mbps and an efficient structure for the interface between the modem and the upper structure are being studied. Poor compared to the study.

In addition, the next generation wireless communication system is required to shorten the verification development period for research and implementation for the new communication protocols and standards.

In the multi-carrier environment considering the development and manufacture of application specific integrated circuit (ASIC) chip, the research and development of modem technology can be applied. Development of a wireless terminal device platform is poor.

In order to solve the above problems, an object of the present invention is to provide a modem platform device for the development of a wireless terminal device that proposes an implementation environment and an efficient structure for the wireless terminal device of the next generation wireless communication system.

Modem platform device for developing a wireless terminal device according to a feature of the present invention for achieving the technical problem, the processor side board for executing a communication application for wireless communication with an external system and performs a modem control function; A digital intermediate frequency unit side board unit for implementing a filter and a signal processing function for processing a baseband signal received from the outside into a digital intermediate frequency or zero intermediate frequency; And a main board unit interworking with the processor side board unit and the digital intermediate frequency unit side board unit to perform a terminal modem function for wireless communication with the external system.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

Now, a modem platform device for developing a wireless terminal device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically illustrating a modem platform device for developing a wireless terminal according to an embodiment of the present invention.

Modem platform device for wireless terminal development according to an embodiment of the present invention is the main board 100, the processor side board 110 and the Digital Intermediate Frequency Unit (hereinafter referred to as "DIFU") side board 120 ).

The main board 100 interworks with the processor side board 110 and the digital intermediate frequency unit side board 120 to perform a terminal modem function for wireless communication with an external system.

The processor side board 110 controls a modem function by executing a communication application for wireless communication with an external system and controlling the main board 100.

The digital intermediate frequency unit side board 120 performs a filter implementation and a signal processing function for processing the baseband signal received from the outside into a digital intermediate frequency or zero intermediate frequency.

Hereinafter, a modem platform device for developing a wireless terminal will be described in detail with reference to FIG. 2.

2 is a block diagram illustrating in detail a modem platform device for the development of a wireless terminal device according to an embodiment of the present invention.

Modem platform device for the development of a wireless terminal device according to an embodiment of the present invention includes a main board 100, a processor side board 110 and a DIFU side board 120.

The main board 100 performs a terminal modem function for wireless communication with an external system and interworks with the processor side board 110 and the DIFU side board 120. In addition, the main board 100 uses five Field Programmable Gate Arrays (hereinafter referred to as 'FPGA') for each function, and may be used according to the capacity and layout of the implementation code and rearranged accordingly. .

The Trch-Decoder, Trch-Encoder, Demodulator, Modulator and Synchronization blocks implemented in each FPGA of the main board 100 are controlled by a modem controller (not shown).

To this end, it has a bus control interface using a complex programmable logic device (CPLD), and enables each function to be implemented and tested with the main board 100 alone.

The processor side board 110 performs a network application, a multimedia application, a terminal interface, a layer 3 function, a medium access control (MAC) function, and a modem control function.

The processor side board 110 uses an Advanced RISC Machine Processor for a terminal interface, and uses an XScale Processor to process network applications, multimedia applications, and Layer 3 functions.

The processor side board 110 uses a Digital Signal Processor for Mac software and modem control, and uses an FPGA for traffic interface with MAC hardware and modem. In addition, only the processor side board 110 may implement and test each function.

The DIFU side board 120 may configure a 4-path signal path in consideration of a multicarrier system, configure a digital intermediate frequency for an analog interface with a base station, and develop a terminal device. In order to configure the zero intermediate frequency (Zero Intermediate Frequency), the DIFU side board 120 can be implemented and tested for each function alone.

The DIFU side board 120 converts the low frequency signal of the baseband stage into the frequency of the intermediate stage of the high frequency signal of the radio frequency processor. In addition, the DIFU side board 120 may configure the side board by adding an analog stage capable of converting a baseband signal into a radio frequency signal when the digital intermediate frequency is configured as a zero intermediate frequency.

3 is a block diagram schematically illustrating an embodiment in which a main device is applied to a modem platform device for developing a wireless terminal according to an embodiment of the present invention.

The FPGA of the main board 100 was applied to Xilinx's XC2VP100-6FF1704C, which considers the actual high speed integrated circuit hardware description language (VHDL) code and the characteristics of the device to be used. Can be changed.

The processor side board 110 uses the ARM S3C2510 Processor, which provides a Cardbus Interface driver for the terminal interface, and uses the Intel PXA270 Processor to handle network applications, multimedia applications, and Layer 3 functions. use. In addition, processor side board 110 uses TI DSP 6416 for Mac software and modem control, and Xilinx FPGA XC2VP100-6FF1704C for traffic interface with Mac hardware and modem. do.

The DIFU side board 120 uses the Xilinx FPGA XC2VP40-7FF1152C for filter implementation and signal processing to handle digital intermediate or zero intermediate frequencies.

4 is a block diagram illustrating a modem platform device for developing a wireless terminal to which a main device for developing and manufacturing an ASIC chip according to an exemplary embodiment of the present invention is applied.

Xilinx's XC2VP100-6FF1704C is applied to the FPGA of the main board 100. Considering the amount of code in the high-speed integrated circuit hardware description language (VHDL) and the characteristics of the device to be used, The product can be changed, and depending on the capacity and layout of the implementation code, the quantity used and the redistribution accordingly are possible.

The processor side board 110 uses the ARM S3C2510 Processor, which provides a Cardbus Interface driver for the terminal interface, and uses the Samsung S3C2440 Processor to handle network applications, multimedia applications, and Layer 3 functions. use. In addition, the processor side board 110 uses the CEVA-X1620 for Mac software and modem control, and Xilinx FPGA XC2VP100-6FF1704C for traffic interface with Mac hardware and modem. use.

The DIFU side board 120 uses the Xilinx FPGA XC2VP40-7FF1152C for filter implementation and signal processing to handle digital intermediate or zero intermediate frequencies.

5 is a block diagram illustrating in detail a modem platform device for an efficient structure and an implementation environment for the development of a wireless terminal device according to an embodiment of the present invention.

Hereinafter, the overlapping description of the components described in FIG. 1 will be omitted with reference to FIG. 1. An upper structure diagram of an efficient structure and an implementation environment for the development of a wireless terminal device according to an embodiment of the present invention includes a main board 100, a network application program, a multimedia application program, which performs a terminal modem function and interworks with each side board. Processor side board 110 which performs terminal interface, Layer 3 function, MAC function and modem control function, DIFU side board 120 to handle digital intermediate frequency or zero intermediate frequency, and on each board It includes a clock page board that provides the required clock, tick, and count.

An embodiment of the present invention provides a system clock used for the main board 100, the processor side board 110, and the DIFU side board 120 to supply a plurality of system clocks to each of the FPGAs using a clock driver. There is improved the stability of the clock. In addition, the embodiment of the present invention uses the interface (RAM) (DPRAM) interface between each FPGA to increase the stability of the interworking signal.

The main board 100 has a structure in consideration of interworking with a modem analysis tool (MAT), so that various modem software can be downloaded and verified in real time and non-real time.

The main board 100 has a dedicated RAM (DPRAM) in the FPGA for Trch-Decoder and the FPGA for Trch-Encoder to be used for processing the Hybrid Automatic Repeat Request function.

The processor side board 110 improves signal processing performance by placing each async DPRAM to block bottlenecks when the information signal and the control signal are interworked between the Layer 3 function and the MAC function. .

The DIFU side board 120 uses a SER (Serializer) / Deserializer (DES) Chip for stability of high-speed signal transmission for I-Channel and Q-Channel in 4 paths.

The clock side board receives the clock multiplied by the system clock from the radio frequency (RF) to generate a system clock to synchronize the clock of the wireless terminal device, and if there is no radio frequency (RF), uses its own local oscillator. It enables the development of a radio terminal device excluding radio frequency (RF).

6 is a diagram showing a first implementation of a modem platform device for developing a wireless terminal device according to an embodiment of the present invention.

The first implementation includes two radio frequency two path (RF 2Path) signal path modules representing the four path signal path of the DIFU side board 120, the main board 100, the processor side board 110, and the DIFU. The modem platform module including the side board 120, a module representing power and clock signals of a radio frequency signal path, a module supplying system power, and a bus control interface connecting the respective signals and data.

The first implementation forms the above-described modem platform structure in a rack type and works with a laptop.

FIG. 6 illustrates an interworking with a modem platform device for developing a wireless terminal device according to an embodiment of the present invention using a laptop as a terminal as a rack type wireless terminal device implementation environment.

7 is a view showing a second implementation of the modem platform device for wireless terminal device development according to an embodiment of the present invention.

The second embodiment is a modem platform device in which the main board 100, the processor side board 110, and the DIFU side board 120 are the main devices (see FIG. 4) for developing and manufacturing ASIC chips. .

FIG. 7 illustrates a modem platform device constructed as an ASIC chip after completing a performance test using a modem platform device having the structure shown in FIG. 4 as a PC card type wireless terminal device implementation environment.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

By the above-described configuration, the present invention provides a development and implementation environment for operating as a terminal device of the next-generation wireless communication system, and by providing a structure that can be developed and manufactured by ASIC chip for each function of the developed wireless terminal device The effect of shortening the development period for the commercialization of the terminal device can be expected.

In addition, the present invention enables the development and implementation of parallel subsystems for each layer, which can be expected to shorten the development period and facilitate the integrated test and performance test by the stabilized high-speed interface.

In addition, the present invention can promptly cope with new communication protocols and standards of a wireless communication system that is accelerated by presenting a wireless terminal device implementation environment and an efficient structure thereof, and provides a verification period for research and implementation of a wireless terminal device. The effect of enabling shortening can be expected.

In addition, the present invention provides an efficient structure for a modem interface and a modem interface that can transmit and receive data of several tens of Mbps or more in response to data rates of several tens of Mbps or more for a next generation wireless communication system. The bottleneck can be expected to increase the performance degradation.

In addition, the present invention may provide a research and development platform for securing a higher data rate using a multiple-input multiple-output technology by configuring a signal path of four paths in consideration of a multicarrier system. You can expect the effect.

In addition, the present invention has a structure in consideration of the interworking with the Modem Analysis Tool for the system test of the wireless terminal device to be developed and implemented, so that the terminal can be verified in real time and non-real time by downloading a variety of modem software The effect of shortening the terminal development period can be expected.

Claims (11)

In the modem platform device for developing a wireless terminal device, A processor side board that executes a communication application for wireless communication with an external system and performs a modem control function; A digital intermediate frequency unit side board unit for implementing a filter and a signal processing function for processing a baseband signal received from the outside into a digital intermediate frequency or zero intermediate frequency; And A main board unit which performs a terminal modem function for wireless communication with the external system by interworking with the processor side board unit and the digital intermediate frequency unit side board unit. Modem platform device comprising a. According to claim 1, And a clock side board unit for providing clocks, ticks, and counts required by the processor side board unit, the digital intermediate frequency unit side board unit, and the main board unit. According to claim 1, And the processor side board unit performs any one or more of a network application program, a multimedia application program, a terminal interface, a layer 3 function, a MAC function, and a modem control function. According to claim 1, And the processor side board unit, the digital intermediate frequency unit side board unit, and the main board unit implement each function of a modem and perform a test by itself. According to claim 1, The main board unit includes field-programmable gate arrays (FPGAs) that are decoders (Trch-Decoder), encoder (Trch-Encoder), demodulator, modulator, and synchronization blocks, which are functions of a modem. And repositionable according to the implementation code capacity. The method of claim 5, A dedicated RAM is provided in the field programmable gate array for the decoder (Trch-Decoder) and the field programmable gate array for the encoder (Trch-Encoder) to process a hybrid automatic repeat request function. Modem platform device. According to claim 1, The main board unit may further include a complex programmable logic device (CPLD) that is an interface for bus control to control the blocks implemented by the field programmable gate array from the processor side board unit. Modem platform device. According to claim 1, The processor side board unit uses a communication processor to handle network applications, multimedia applications, terminal interfaces, and layer 3 functions, and uses a digital signal processing unit (DSP) for Mac (MAC) software and modem control. (MAC) A modem platform device using a Field Programmable Gate Array (FPGA) for traffic interface with hardware and modems. According to claim 1, The digital intermediate frequency unit side board unit constitutes a 4-path signal path in consideration of a multicarrier system, and constitutes a digital intermediate frequency for an analog interface with a base station. Modem platform device, characterized in that configured to zero intermediate frequency (Zero Intermediate Frequency). According to claim 1, The main board unit is a modem platform device, characterized in that verified by real-time and non-real-time by downloading the modem software in conjunction with the Modem Analysis Tool (MAT). According to claim 1, The clock side board unit receives a clock multiplied by a system clock from a radio frequency (RF) to generate a system clock to synchronize the clock of the radio terminal device, and develops its own local oscillator during the development of the radio terminal device except for the radio frequency (RF). Modem platform device, characterized in that using the Local Oscillator.

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