KR100378820B1 - Application download apparatus and method for sdr terminal equipment - Google Patents

Abstract

The present invention relates to a technology in which an SDR terminal equipped with a short range wireless communication system such as Bluetooth or WLAN downloads a desired radio waveform application from a corresponding SDR software server through an access point and reconfigures the system. The present invention includes an SDR terminal (101A-101N) for reconfiguring the terminal system by downloading the necessary software from the SDR software server (104A-104N) based on the server list provided by the access point (102A-102N); Access points 102A-102N for registering the SDR software servers 104A-104N to a server list and for connecting the SDR terminals 101A-101N to the SDR software servers 104A-104N via the Internet 103; Wow; SDR software server that receives the IP list of the access points 102A-102N from the access point registration server 105, recognizes them, requests registration, and transmits a serviceable software list from the SDR terminals 101A-101N. 104A-104N; By the access point registration server 105 which registers and manages the access points 102A-120N and multicasts a message to the SDR software server 104A-104N to inform the fact when a new access point is added. Is achieved.

Description

App download device and method of the SD terminal {APPLICATION DOWNLOAD APPARATUS AND METHOD FOR SDR TERMINAL EQUIPMENT}

The present invention relates to a technology for downloading a Radio Waveform Application (SDR) to a Software Defined Radio (SDR) terminal using an access point, and in particular, even if the server storing the application is unknown. The present invention relates to a device and a method for downloading an application of an SD terminal capable of finding and downloading a server.

Conventional wireless communication terminals (eg, mobile phones) are designed to support only predefined communication systems. Such a terminal has no flexibility for communication, and thus global roaming or selective use of a wireless communication system is impossible. In order to compensate for this disadvantage, multi-mode and multi-band terminals have been released. These terminals can be used in various modes according to the user's needs, so that the flexibility is good, but the supported modes and functions are predefined so that the hardware of the terminal can be used to access new communication systems or new communication systems in other regions. There is a problem that needs to be replaced.

In order to overcome this inflexibility of the terminal, SDR technology has recently been studied. SDR technology is a technology that implements a communication system by processing all parts of the stage after the antenna by software in principle, and without changing or adding new hardware, operating characteristics such as operation frequency, modulation type, It is a technology that can change bandwidth, network protocols, etc. by changing software program only. In terms of current hardware technology, processing to high frequency (RF) is not practical, so most of the studies have been implemented by software since intermediate frequency (IF). If the terminal is manufactured using the SDR technology, the function and mode can be reconfigured in software unlike the hardware-oriented terminal.

In order to reconfigure the mode of the SDR terminal, the necessary software must be downloaded. For example, if the current terminal is a CDMA mode terminal and you want to change it to GSM mode, you need to download the GSM waveform application and reconfigure the terminal. If the user's location is not CDMA supported, the CDMA currently supported terminal You cannot download GSM waveform applications over a wireless link. Of course, the GSM program can be downloaded in advance using the CDMA link before moving to the GSM region, but in this case, two problems arise.

First, the user must know in advance which communication system is being used where he wants to move, and must complete the download before moving. This restriction brings considerable inconvenience to the user. Second, there is no way to verify the downloaded program. The downloaded program is not supported in that region, so it cannot be verified at the time it is received. In this case, the verification must be performed after moving to the corresponding area, even if it is determined that the verification does not work, there is a problem that the request cannot be downloaded again.

In order to solve this problem, the existing terminals provide a software upgrade function, but they have to go to a dealer to receive the service and can only change additional service functions. That is, major changes in the communication system are not currently being serviced.

The existing software download technology for a terminal can be roughly classified into the following three. First, a method of using a subscriber identity module (SIM) or a universal identity module (UIM) is used. Secondly, it is a download method through connection with an existing network such as a public communication network (PSTN). Third, a download method using airwaves. The three download methods are as follows.

The method using the SIM or the UIM is a method of reconfiguring the system by transferring software and control information about a part depending on the support mode by attaching and detaching a smart card having a large memory and a microcomputer. In order to apply this concept, among the specifications of the standards to be supported, a module that needs to be implemented in advance in a system that is independent of a radio interface in the system and needs to be changed according to the radio interface, and parameters and information for controlling the same Implement on smart card by separating, modularizing or library.

The download method through connection with an existing network such as a PSTN network is a method of downloading a system program through a software download service through a wired network. This method reduces errors in software downloads and may be the most common solution. The wired network is installed in most areas, which means that the existing infrastructure can be reused and the high-speed data service can be reliably received. However, it is inconvenient for the user to connect the terminal to the wired network. .

The download method via a wireless connection is similar to the second method except that it downloads data and programs for system configuration wirelessly. When using this method, a channel for data download must be allocated separately, and when the data transfer rate is large, the download time is increased.

As described above, in the software download method of the terminal according to the prior art, the method using the SIM or the UIM is expensive to construct a system, and the download method through connection with an existing network such as a PSTN network is a user. From the point of view, it is inconvenient to connect with the terminal and the wired network, and the download method through the wireless connection requires a separate channel for data download and the data transfer rate is large when the software capacity is large. The bug was that the download time was increased.

Accordingly, a first object of the present invention is a system in which an SDR terminal equipped with a short-range wireless communication system such as Bluetooth or a wireless LAN downloads a desired radio waveform application from a corresponding SDR software server through an access point (AP). In providing.

The second object of the present invention is simple and efficient download compared to the download method using a conventional SIM card or wired, and unlike the download method using a cellular wireless link, it is downloaded immediately when the mode conversion is required, and immediately after download To provide a system that can be tested and verified.

It is a third object of the present invention to provide a system capable of operating a plurality of different SDR software servers and allowing a plurality of SDR terminals to access any SDR software server from any access point.

1 is a schematic diagram of an application download apparatus of the SD terminal according to the present invention.

2 is a signal flow diagram of an application download method of the SD terminal according to the present invention.

*** Description of the symbols for the main parts of the drawings ***

101A-101N: SDR Terminal 102A-102N: Access Point

103: Internet 104A-104N: SDR Software Server

105: access point registration server 106A, 106B: system test terminal

107A, 107B: System Base Station

According to a first aspect of the present invention, there is provided a radio waveform application download system composed of an SDR terminal, an access point, an AP registration server, an SDR software server, a plurality of base stations, a test terminal, and the like.

According to the second aspect of the present invention, the SDR software server uses the AP registration server to find out the IP of the AP so that the AP necessary for configuring the system according to the first aspect has a list of SDR software servers. Will be registered.

According to a third aspect of the present invention, when an AP essential for configuring a system according to the first aspect is newly added, the AP registration server is notified of its existence so that the AP can receive a list of SDR software servers. The registration server again multicasts it to the SDR software server so that all SDR software servers that receive this message advertise their presence to the new AP.

According to the fourth aspect of the present invention, when an AP, which is essential for configuring a system according to the first aspect, manages a list of SDR software servers, when the same plurality of SDR software servers exist, the APs are arranged in the nearest order. Done.

According to a fifth aspect of the present invention, an AP is used to manage and operate a plurality of different SDR software servers.

According to the sixth aspect of the present invention, the AP and the SDR software server always have an updated list even when the AP is added using the AP registration server.

According to a seventh aspect of the present invention, after the SDR terminal downloads and installs the corresponding software, the SDR terminal verifies the software by connecting the test terminal and the call path through the corresponding base station.

1 is a block diagram showing an embodiment of an application download apparatus of an SDD terminal according to the present invention. As shown in FIG. 1, an SDR software server 104A- is based on a server list provided from access points 102A- 102N. SDR terminals 101A-101N for checking the existence of 104N and downloading and installing necessary software from any server; The SDR software server 104A-104N is registered in the server list, and the service point is notified to the access point registration server 105 when the service is started, and the SDR terminals 101A-101N are connected to the SDR via the Internet 103. Access points 102A-102N for connecting to software servers 104A-104N; When the service starts, the access point registration server 105 receives the IP list of the access points 102A-102N, recognizes them, requests registration, and receives a software service request signal from the SDR terminals 101A-101N. An SDR software server 104A-104N for comparing the memory capacity of the corresponding SDR terminal with the capacity of the software services thereof and transmitting a list of serviceable software to the corresponding SDR terminal; An access point registration server (105) for registering and managing the access points (102A-120N) and multicasting messages to the SDR software servers (104A-104N) to inform the fact that when a new access point is added; System base stations (107A) and (107B) connected to system test terminals (106A) and (106B) so as to verify the SDR terminals (101A-101N) by downloading software and rebuilding the system; The system test terminals 106A and 106B are connected to the SDR terminals 101A-101N through the system base stations 107A and 107B to verify that the system reconfigured with the downloaded software is operating normally. When described in detail with reference to Figure 2 attached to the operation of the present invention configured as described above are as follows.

The SDR terminals 101A-101N and the access points 102A-102N are equipped with Bluetooth, respectively, to find out whether a software download service is provided or to perform a software download service.

The SDR terminals 101A-101N check the existence of the SDR software server 104A-104N based on the server list provided by the access points 102A-102N, and among them, request the IP address of the serviceable server to determine the location. After confirming, negotiate with the server to download and install the required software.

Thereafter, the SDR terminals 101A-101N are connected to the system test terminals 106A and 106B through the base stations of the cellular system, that is, the respective system base stations 107A and 107B, and are tested (verified). If the test results indicate that the downloaded software does not work properly, download and test another type of software, or change the SDR software server and test it.

However, if the software downloaded above is verified to operate normally, the cellular system receives and stores various parameters necessary for system use.

The access point 102A-102N informs the access point registration server 105 of its location when the service is started. When the SDR software servers 104A-104N request registration, they are registered in the server list managed by the SDR software server 104A-104N. If the same type of SDR software server requests multiple registrations, it registers by aligning from the nearest place by measuring the distance from the corresponding server with PING (Packet InterNet Gopher).

When a new access point is added, the access point informs the access point registration server 105 of its presence to receive a list of the SDR software servers 104A-104N, and this access point registration server 105 Since the message for notifying the fact is multicasted to the SDR software servers 104A-104N, the SDR software servers 104A-104N recognize that the access point has been added. Thus, when a new access point is added, the access points 102A- 120N and the access point registration server 105 can have updated lists.

As a result, the access points 102A-102N can be used to manage and operate a plurality of different SDR software servers 104A-104N.

The SDR software server 104A-104N receives the IP list of the access points 102A-102N from the access point registration server 105 at the start of service, recognizes them, and registers their existence as above, Casting is used to notify the access points 102A-102N of their service start. In addition, when a software service request signal is input from the SDR terminals 101A-101N, the memory capacity of the SDR terminal is compared with the capacity of the softwares that are serviced by the SDR terminal, and the serviceable software list is transmitted to the SDR terminal. After that, when the download success signal is input from the corresponding SDR terminal, the download service is terminated.

For reference, the SDR software servers 104A-104N may serve software of different cellular systems, and may operate with different subjects. For example, service provider A and service provider B can service different software. In addition, when the SDR software servers 104A-104N service various different types of software, the access points 102A-102N show the user a list of the servers to allow the user to select the desired server.

The system test terminals 10A and 106B are managed by each cellular network service company, and they are used when the SDR terminals 101A-101N download and test new software through the above path. During this test period, the phone numbers of the SDR terminals 101A-101N and information related to various services are stored.

Meanwhile, referring to FIG. 2, a software download process and a verification procedure of the SDR terminals 101A-101N are described below.

SDR terminals 101A-101N can download software from any of the SDR software servers 104A-104N via respective access points 102A-102N and the Internet 103, where SDR terminals 101A are available. ) Will download the software from the SDR software server 104A as an example.

The SDR terminal 101A requests the IP address of the SDR software servers 104A-104N from the access point 102A and receives a list of their IP addresses. (S1, S2)

Thereafter, the SDR terminal 101A selects one server from the IP list of the SDR software servers 104A-104N, for example, the SDR software server 104A, and stores its data in the SDR software server 104A. It notifies you of the capacity, and receives a list of cellular systems currently supported in the current area for display by the user (S3, S4).

In this case, when the user selects one system, the SDR terminal 101A requests the SDR software server 104A to download the corresponding software, downloads the downloaded software, and reconfigures the new system using the same. (S5, S6)

Thereafter, the SDR terminal 101A is connected to the system test terminal 106A through the system base station 107A and then reconfigured as shown in the above description.

As described in detail above, the present invention is to install a short-range wireless communication system such as Bluetooth or WLAN in the SDR terminal and to reconfigure the system by downloading the desired radio waveform application from the corresponding SDR software server through the access point, When entering a new cellular network there is an effect that can be used continuously without replacing the terminal without any inconvenience.

In addition, when a new kind of cellular network appears, there is an effect that only the software of the network can be downloaded to update the terminal.

Claims (6)

SDR terminals 101A-101N for checking the existence of the SDR software servers 104A-104N based on the server list provided by the access points 102A-102N, downloading the necessary software from any server, and reconfiguring the terminal system. Wow; The SDR software server 104A-104N is registered in the server list, and the service point is notified to the access point registration server 105 when the service is started, and the SDR terminals 101A-101N are connected to the SDR via the Internet 103. Access points 102A-102N for connecting to software servers 104A-104N; Receives the IP list of the access points 102A-102N from the access point registration server 105, recognizes them, requests registration, and when the software service request signal is input from the SDR terminals 101A-101N, the corresponding SDR. SDR software servers 104A-104N for transmitting a list of software available for service at the terminal; An access point registration server (105) for registering and managing the access points (102A-120N) and multicasting messages to the SDR software servers (104A-104N) to inform the fact that when a new access point is added; SD, which is connected to the SDR terminals 101A-101N through system base stations 106A and 106B and configured as system test terminals 106A and 106B for verifying that the reconfigured SDR terminals operate normally. Application download device of al terminal. The terminal of claim 1, wherein the SDR terminals 101A-101N are configured to download and re-validate other types of software or to change the connection state to another SDR software server if it is found to be abnormal. Application download device. The apparatus of claim 1, wherein the SDR terminals (101A-101N) are configured to receive and store various parameters necessary for system use from the cellular system when the SDR terminals (101A-101N) are found to be normal. The method of claim 1, wherein the access points (102A-102N) is configured to register sequentially by measuring the distance with the server when the same type of SDR software server requests a plurality of registrations from the nearest place Application download device of the SD terminal. A first step of the SDR terminal receiving an IP list of SDR software servers through an access point to confirm their existence, and receiving and displaying a list of cellular systems supported in the current region from any server; A second step of downloading software requested by a user from the SDR software server and reconfiguring the SDR terminal into a new system; And a third step of connecting the SDR terminal and the system test terminal through a system base station, and then verifying the reconfigured SDR terminal system. 6. The access point registration server of claim 5, wherein when the access point is newly added, the new access point informs the access point registration server of its existence, so that the access point can receive a list of SDR software servers. The method of claim 1, further comprising the step of multicasting the fact to the SDR software server.