KR20120051111A - Method for managing middle-ware mobile rfid environment - Google Patents

Abstract

PURPOSE: A middleware operating method in mobile RFID(Radio Frequency Identification) environment is provided to reduce communication loads and processing time by separately analyzing codes through a support server. CONSTITUTION: First code analysis including protocol analysis is collected and executed by a tag information RFID reader(S120). Detailed information for the tag information is requested to an external support server. Second code analysis is executed in case a response is not received during predetermined time. The detailed information is acquired and displayed on a screen by directly connecting to an object information searching and management server(S180).

Description

{Method for managing middle-ware mobile RFID environment}

The present invention relates to a method of operating a middleware in a mobile RFID environment, and in particular, performs only the first code analysis or the remaining second code analysis according to whether or not a support server connected by wire with an external information providing server is available. The present invention relates to a method of operating a middleware in a mobile RFID environment to collect necessary information by directly wirelessly communicating with an external information server according to the obtained information.

Radio-Frequency IDentification (RFID) technology refers to a technology that recognizes information over a long distance by using radio waves, which requires an RFID tag (hereinafter simply referred to as a 'tag') and an RFID reader (hereinafter simply referred to as a 'leader'). Do. The tag consists of an antenna and an integrated circuit, which records information in the integrated circuit and transmits the information to the reader via the antenna. This information is used to identify the tagged object.

The classification into the power using the RFID is as follows. RFID that reads and communicates the information of the tag chip only by the power of the reader is called passive RFID. RFID is used to read the information of the chip and the power of the reader is used for communication. Is called semi-passive RFID, and RFID which uses the power of tag both to read information of chip and communicate that information is called active RFID.

RFID is also classified into the frequency of radio waves used for communication instead of power. RFID, which uses a low frequency, for example, 120 to 140 kHz, is called low-frequency identification (LFID), and uses a higher frequency of 13.56 MHz. RFID is called High-Frequency IDentification (HFID), and RFID that uses a higher frequency of 868 to 956 MHz is called UHFID (Ultra High-Frequency IDentification).

RFID can also be classified into mobile RFID and fixed RFID depending on the portability of the reader. In the case of mobile RFID, the reader and middleware are mounted in a portable terminal such as a mobile phone using a wireless communication network. Readers and middleware are embedded in fixed terminals using wired communication networks.

Here, middle-ware refers to software that connects different types of hardware, protocols, or communication environments in a distributed computing environment to enable smooth communication between an application program and an environment in which the program operates. In the case of RFID middleware, in particular, the information stored in the tag is transmitted to the application service at the right place and at the right time, and only the data required by the application service is transmitted from the information collected from the reader. This is different.

However, to date, many middlewares have been developed for fixed terminals using wired communication networks. However, there has been a problem that little development has been made for portable terminals using wireless communication networks that are relatively slow in processing speed and unstable compared to wired communication networks.

The present invention has been made to solve the above-described problem, and according to whether or not the support server connected to the external information providing server can be used by wire, only the simple first code analysis or the second secondary code analysis itself is performed. The purpose of the present invention is to provide a method of operating a middleware in a mobile RFID environment that efficiently operates the middleware so as to collect necessary information by directly communicating with an external information server according to the obtained information.

The middleware operating method in the mobile RFID environment of the present invention for achieving the above object is performed in the middleware of the portable terminal in which the RFID reader is installed and the middleware is mounted, the tag information is collected through the RFID reader to control the PC (Protocol Control) (A) performing a primary code analysis comprising the analysis; (B) performing filtering and monitoring on tag information in which primary code analysis is completed; Contact the external support server for detailed information on the tag information that has passed the step (b). If the inquiry results from the steps (c) and (c) indicate that there is no response from the external support server within a predetermined time, And performing a second code analysis and directly connecting to an external object information retrieval server and an object information management server according to the result, and obtaining detailed information and displaying the detailed information on the screen.

In the above-described configuration, the primary code analysis may further include a cyclic redundancy check (CRC) check.

The secondary code analysis may be performed by converting an ObjectID or an RFID code included in the tag information on which the primary code analysis is completed, into a Uniform Resource Name (URN) and a Fully Qualified Domain Name (FQDN).

Meanwhile, as a result of the inquiry in the step (c), when a swap / web page containing detailed information is received from an external support server within a predetermined time, the inquiry is displayed and displayed on the screen as it is.

On the other hand, if the query in step (c) receives a URL in which a swap / web page for detailed information is received from an external support server within a predetermined time, the external server accesses the swap / web by the URL. It receives the page and displays it on the screen.

According to the method of operating a middleware in the mobile RFID environment of the present invention, when a support server connected to an external information providing server is wired, only a simple first code analysis is performed and the remaining second code analysis and information server are supported. By performing the request to the server, it can reduce the communication load and shorten the processing time. If the external supporting server is not available, the external information server is provided according to the information obtained by performing the remaining secondary code analysis by itself. You can also collect the necessary information by wireless communication directly with.

1 is a configuration diagram of a mobile RFID system to which the middleware operating method of the present invention is applied.
2 is a flowchart illustrating a middleware operating method in a mobile RFID environment.
3 is a tag encoding structure diagram of ISO / IEC 18000-6C.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the middleware operating method in a mobile RFID environment of the present invention.

1 is a configuration diagram of a mobile RFID system to which the middleware operating method of the present invention is applied. As shown in FIG. 1, the mobile RFID system to which the middleware operating method of the present invention is applied is largely equipped with a reader and middleware that reads data recorded in the tag 110, and a portable terminal capable of accessing the Internet through a wireless communication network. 100, an object information search server (ODS; Object Domain Server or ONS; Object Naming Server, etc.) 300, an object information management server (OIS; Object Information Server or EPCIS; Electronic Product Code Information Server, etc.) 400, Secondary code analysis of tag data requested by the middleware of the portable terminal 100 and detailed information on the corresponding tag data from the object information retrieval server 300 and the object information management server 400 and the storage of such detailed information It may include a support server (Extended Service Broker) 500 that receives the location information and transmits to the portable terminal (100). Here, when the support server 500 receives detailed information in the physical markup language (PML) from the object information management server 400, the support server 500 transfers the same to the portable terminal 100 as it is or the portable terminal 100 is generally swapped. After converting the web page into a swap / web page that can be displayed using a web / WAP / WEB browser and storing it in the information server, only the URL (Uniform Resource Locator) can be delivered to the portable terminal 100. See FIG. The number 600 designates the information server where these swap / web pages are stored.

Of course, when the support server 500 receives the detailed information of the general swap / web page from the object information management server 400, it may be delivered to the portable terminal 100 as it is, otherwise the object information search server 300 ) May only perform a function degree of transmitting the URL of the detailed information obtained by querying to the portable terminal 100.

2 is a flowchart illustrating a method of operating middleware in a mobile RFID environment, the middleware mounted on the portable terminal 100 is mainly performed. 1 and 2, first, in step S100, the middleware reads tag information recorded in a tag through a reader provided in the portable terminal 100 itself, and in step S120, the tag information is read as 1. Perform secondary code analysis. At the core of the primary code analysis is the protocol control (PC), in addition to the cyclic redundancy check (CRC) check can be added. That is, in the first code analysis, a CRC check is performed to check whether tag information collected through the reader is not lost or modified in the collection process or the delivery to the middleware, and then user memory usage, additional PC usage, PC analysis is performed to extract the RFID code (EPC or Non-EPC) to be used by analyzing information such as RFID code type and identification ID. In this case, the CRC check can be omitted because the RFID reader can generally be processed.

The following describes the coding scheme of RFID tags to provide a more detailed understanding of the primary code analysis. The RFID code is a code system operated by EPCglobal Inc., which is an electronic product code (EPC) used as a de facto standard in the supply chain. And Non-EPC having a code system other than EPC, for example, KKR code or mCode, etc. FIG. 3 is a tag encoding structure diagram of ISO / IEC 18000-6C (Non_EPC). As shown in Fig. 3, the tag encoding structure of ISO / IEC 18000-6C includes four banks. A bank 0 reserved area includes an access control and a password for tag kill. The UII (Unique Item Identifier) area, which is Bank 1, is an area for IDs used in the industry, Bank 2 is a tag ID (TID) area where the chip manufacturer records the ID of the chip, and finally, Bank 3 is a user memory. (user memory) area.

Table 1 below is a UII region summary table in the ISO / IEC 18000-6C tag encoding structure.

address
(Hex) Component Explanation Kinds 00 to 0F CRC-16 Tag and Reader Information Movement Error Check CRC 10 to 14 Length UII data Word length
(PC + UII data word length -1) PC 15 UMI User memory usage record 16 XI Record additional PC area usage 17 T Record whether EPC (0) or Non-EPC (1) 18-1F AFI Tag Application Identification ID Value 20 to 27 DSFID UII data structure and ObjectID (OID)
Storage method history UII Data 28-2F Precursor Of ObjectID & Object
Structure and format records 30 ~ ObjectID ObjectID value ~ Object RFID code (Non-EPC code)

* UMI: User Memory Indicator

* XI: XPI Indicator

* AFI: Application Family Identifier

* DSFI: Data Storage Format Identifier

As shown in Table 1, the UII area is composed of a Cyclic Redundancy Check (CRC) area, a Protocol Control (PC) area, and a UII data area. In practice, the ID is recorded in this UII data area. On the other hand, the PC area includes a toggle bit (T) indicating whether or not the EPC code is used.

Table 2 below is a UII region summary table in the EPC tag structure.

address
(Hex) Component Explanation Kinds 00 to 0F CRC-16 Tag and Reader Information Movement Error Check CRC 10 to 14 Length UII data Word length
(PC + UII data word length -1) PC 15 UMI User memory usage record 16 XI Record additional PC area usage 17 T Record whether EPC (0) or Non-EPC (1) 18-1F AFI Tag Application Identification ID Value 20 ~ EPC RFID code (EPC code) EPC

Next, Non_EPC codes used in Korea are largely ISO 15495 KKR code and mCode. ISO 15459 is a standard for assigning prefixes to transport units by industry to prevent conflict of IDs assigned to the goods between industries when goods are exchanged between industries. It is called Issuing Agency Code. An exception to this principle is the allocation of IACs that begin with "K", which can be used in the administrative field of all countries, by country, and the application of this rule will assign an IAC called "KKR" as the administrative code for Korea. Lastly, mCode is a mobile code that was established by the Mobile RFID Forum (MRF) and operated by NIDA.

2 again, in step S130, filtering for tag data having been subjected to the first code analysis and monitoring for collecting additional information are performed. Here, the filtering means a tag specific code having a code system as described above. It filters out unwanted tag information from collected tag information such as tag information having a system, tag information having a specific serial number, or tag information using a user memory.

Next, monitoring means storing information such as user memory usage, RFID code type, identification ID, or CRC test result, or accumulating the results such as the number of tag reading success / failure or RFID code analysis failure. It is a function used as information of a purpose.

2 again, in step S140, the filtered or monitored tag information is transferred to the support server 500 to inquire whether processing is possible. If a response exists from the support server 500 within a predetermined time in step S140, After the process proceeds to step S150 and the detailed information on the tag information through the URL received from the support server 500, that is, the request to the information server 600 that stores the swap / web page is received and received, the screen of the portable terminal 100 Will be displayed on the screen.

Of course, as described above, when the portable terminal 100 receives the swap / web page itself containing detailed information on the tag information inquired from the support server 500, the portable terminal 100 may display the same on the screen of the portable terminal as it is, or PML. Detailed information in (Physical Markup Language) may be transmitted as it is, or only a URL in which the detailed information is stored may be delivered.

On the other hand, for this purpose, the support server first performs the first code analysis and the second code analysis on the tag information that has been filtered or monitored and performed by the middleware of the portable terminal 100, and then the object information search server ( 300 directly and obtains the URL of the object information management server 400 containing the detailed information on the tag information and transfers it to the portable terminal as it is or again to the object information management server 400 by the obtained URL After obtaining the detailed information by inquiring, it is transferred to the portable terminal as it is or converted into a swap / web page, and then the URL is transferred to the portable terminal.

More specifically, the secondary code analysis, the secondary code analysis refers to the actual RFID code analysis to be used, for example, through the primary code analysis, the code system of the tag information is code such as mCode, KKR or EPC. In this case, the ObjectID or RFID code included in the analysis is further analyzed to convert to the Uniform Resource Name (URN) and Fully Qualified Domain Name (FQDN) format to query the supporting server 500. Will create the data for you.

For example, the analyzed tag information corresponds to the code 'Top Level Code (TLC) = 001 (Hexadecimal), Class = 4 (Hexadecimal), CC (Company Code) = 00000011 (Hexadecimal) corresponding to Class E of mCode. , IC (Item Code) = 0003 (Hexadecimal), SC (Serial Code) = 00000010 (Hexadecimal) ”, convert it to URN like Table 3 below.

urn: mcode: 1.4.17.3.16

Then convert to FQDN as shown in Table 4 below.

3.17.4.1.mcode.ods.kr

This is transmitted to the object information search server 300 to query the URL containing the detailed information about the tag information.

And if the ObjectID is analyzed as {0 2 450 1} other than the RFID code, first convert it to a URN as shown in Table 5 below.

urn: oid: 0.2.450.1

Then convert to FQDN as shown in Table 6 below.

1.450.2.0.oid.kr

This is transmitted to the object information search server 300 to query the URL containing the detailed information about the tag information.

2 again, if the response from the support server 500 does not exist within a predetermined time as a result of the inquiry in step S140, for example, the support server 500 does not exist or the communication server 500 may be damaged due to a communication failure. ), Or when the response is slow due to excessive communication traffic of the support server 500, the middleware of the portable terminal 100 performs the above-described secondary code analysis by itself in step S160. After inquiring the URL of the detailed information on the tag information to the search server 300, and again to pass the thus obtained URL to the object information management server 400 to collect the detailed information of the tag and performs step S180 By doing so, the collected information is displayed on the screen of the portable terminal 100.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the technical idea of the present invention.

100: handheld terminal, 110: tag,
300: object information search server, 400: object information management server, 500: support server, 600: information server

Claims (5)

The RFID reader is installed and performed in the middleware of the portable terminal equipped with the middleware,
(A) performing primary code analysis including PC (protocol) analysis by collecting tag information through an RFID reader;
(B) performing filtering and monitoring on tag information in which primary code analysis is completed;
(C) step (b) by contacting an external support server for detailed information on the tag information that has passed the step (b);
As a result of the inquiry in step (c), if there is no response from the external support server within a predetermined time, the second code analysis is performed by itself and directly connected to the external object information search server and the object information management server according to the result. And (d) displaying the screen on the screen after obtaining the detailed information. The method of claim 1,
The first code analysis further includes a cyclic redundancy check (CRC) check. The method of claim 2,
The secondary code analysis analyzes the ObjectID or the RFID code included in the tag information on which the primary code analysis is completed and converts it into a Uniform Resource Name (URN) and a Fully Qualified Domain Name (FQDN) format. Way. The method of claim 1,
As a result of the inquiry in the step (c), when receiving a swap / web page containing detailed information from an external support server within a predetermined time, the middleware operating method in the mobile RFID environment, characterized in that the browsing and display on the screen as it is . The method of claim 1,
As a result of the inquiry in the step (c), if a URL in which a swap / web page for detailed information is stored is received from an external support server within a predetermined time, the URL is connected to an external information server by using the URL. The middleware operating method in a mobile RFID environment, characterized in that received and displayed on the screen.

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