WO2013185691A1

WO2013185691A1 - Nfc terminal network application-oriented data preprocessing method and system

Info

Publication number: WO2013185691A1
Application number: PCT/CN2013/080083
Authority: WO
Inventors: 郭帅; 王立; 魏红泼; 罗迤宝; 马海蓉
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-01-14
Filing date: 2013-07-25
Publication date: 2013-12-19
Also published as: CN103927501A; CN103927501B

Abstract

An NFC terminal network application-oriented data preprocessing method. The method includes: sequencing the detection records which are generated by a tag M in each detection region in an NFC terminal network according to a record time sequence, and grouping the detection records to allow one detection record group after grouping to represent one residence of the tag M in the detection region; and processing each detection record group, including: if the number of records contained in the detection record group is greater than or equal to 2, only reserving the first and last two records, and deleting the other records. The embodiments of the present invention can solve the underlying data redundancy problem occurring in NFC terminal network application. Also disclosed is an NFC terminal network application-oriented data preprocessing system.

Description

Data preprocessing method and system for NFC terminal network application

Technical field

The present invention relates to the field of Near Field Communication (NFC) technology, and more particularly to a data preprocessing method and system for NFC terminal network applications.

Background technique

NFC technology (Near Field Communication) is a short-range wireless communication technology that integrates contactless readers, contactless cards, and peer-to-peer communication functions into a single chip. NFC devices can be used as readers and The tag participates in the communication.

As shown in Figure 1, the NFC terminal network refers to a network composed of multiple NFC terminals that can cooperate to complete a certain network application. The NFC terminal in the analog card reader mode is represented by a detection area of 7, . The area label M (NFC terminal in analog card mode) is between multiple NFC card readers (NFC terminals in analog card reader mode), and the connection between the logical area and Z represents the logical area Ζ, · and Z There is a physical path to access. When the tag M is close to an NFC card reader, the FC card reader senses the NFC tag M, thereby generating a probe record for the tag M, the probe record including the tag content read by the card reader and the card reader. Information such as the detection time of the tag is detected.

For upper-layer applications of NFC terminal networks (for example, NFC terminal positioning), the underlying data generated by the NFC reader may be redundant and multi-read compared to the upper application. The term "redundancy" means that when the tag M stays in the detection area of a certain NFC card reader for a long time, the NFC card reader may read the tag M multiple times, thereby being in the same detection area. Generate multiple records of the tag M for a period of time. The so-called multi-reading means: The tag M moves in the NFC terminal network, and when moved to a certain position closer to the NFC card reader T1, it can be strongly sensed by T1, while leaving other NFC card readers (for example, NFC card readers). T2) has a certain distance but can also be weakly sensed by other readers. For upper-layer applications, the information read by other readers except the reader T1 is multi-read data.

Therefore, in order to provide reliable and accurate data to the upper layer application of the NFC terminal network, the underlying data generated by the NFC card reader needs to be preprocessed. Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a data preprocessing method and system for an NFC terminal network application, which can solve the underlying data redundancy problem occurring in the NFC terminal network application.

In order to solve the above technical problem, an embodiment of the present invention provides a data preprocessing method for an NFC terminal network application, including:

The probe records generated by the tag M in each detection area in the NFC terminal network are sorted according to the order of recording time, and then the probe records are grouped, so that a group of probe records after the group represents the label M in the detection area. One time

The processing of each probe record group includes: if the number of records included in the probe record group is greater than or equal to two, only the first and last records are retained, and if there are remaining records, the remaining records are deleted.

Optionally, after the step of processing each probe record group, the method further includes:

Detecting whether the dwell period of each probe record group of the tag M has an inclusion relationship, and for the probe record group having an inclusion relationship for the dwell period, deleting the probe record group with a short dwell period;

Wherein, a probe record group represents a time of the tag M in the detection area, and the time zone of the probe record group starts from the record time of the first probe record, and ends at the record time of the last probe record.

Optionally, the step of grouping the probe records includes:

Determine whether the recording interval of two adjacent detection records is less than the separation threshold, and if so, classify the two detection records into the same detection record group, and if not, separate the two detection records into two detection records. In the record group;

The partitioning threshold is a minimum time interval for the NFC tag to enter the detection area again after leaving the detection area of an NFC card reader according to the movement rule of the NFC tag in the NFC terminal network.

Optionally, the separation threshold is a risk value.

In order to solve the above technical problem, an embodiment of the present invention further provides a data preprocessing system for an NFC terminal network application, including: a grouping module, configured to sort the detection records generated by the label M in each detection area in the NFC terminal network according to the order of recording time, and then group the detection records, so that a group of detection records after the group represents the label M One dwell in the detection area;

The redundant data processing module is configured to process each of the sounding record groups, including: if the number of records included in the sounding record group is greater than or equal to two, only the first and last records are retained, and if the remaining records exist, the remaining records are deleted. .

Optionally, the system further includes a multi-read data processing module;

The redundant data processing module is further configured to notify the multi-read data processing module after processing the detection record groups;

The multi-read data processing module is configured to detect whether a dwell period of each probe record group of the tag M has an inclusion relationship, and to detect a record record group having an inclusion relationship for the dwell period, and delete the probe record with a short dwell period Group

Optionally, the step of grouping the probe records by the grouping module means:

The grouping module determines whether the recording time interval of the two adjacent probe records is less than the partitioning threshold, and if so, the two probe records are classified into the same probe record group, and if not, the two probe records are respectively returned Into two probe record groups;

The partitioning threshold is a minimum time interval for the NFC tag to enter the detection area again after leaving the detection area of an NFC card reader according to the movement rule of the NFC tag in the NFC terminal network; For the risk value.

Compared with the related art, the data preprocessing method and system for the NFC terminal network application provided by the embodiment of the present invention, by grouping the data of the label M in each detection area, so that a group of detected recording groups after the grouping is represented If the number of records included in the detection record group is greater than or equal to two, only the first and last records are retained. If the remaining records exist, the remaining records are deleted, which can solve the NFC terminal network application. The underlying data redundancy problem that arises. By means of the redundantly processed detection record group data of the label M in each detection area The time period is compared. For the probe record group with the inclusion relationship in the resident time period, the detection record group with the short residence time period is deleted, which can solve the under-data multi-read problem occurring in the NFC terminal network application. BRIEF abstract

1 is a schematic diagram of a network topology structure of an NFC terminal network in the related art;

FIG. 2 is a flowchart of a data preprocessing method for an NFC terminal network application according to an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a data preprocessing system for an NFC terminal network application according to an embodiment of the present invention.

Preferred embodiment of the invention

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other. As shown in FIG. 2, an embodiment of the present invention provides a data pre-processing method for an NFC terminal network application, where the method includes:

S10, sorting the probe records generated by the label M in each detection area in the NFC terminal network according to the order of recording time, and then grouping the probe records, so that a group of probe records after the group represents the label M. One time of the detection area;

S20. Processing, by the detection record group, the following: If the number of records included in the detection record group is greater than or equal to two, only the first and last records are retained, and if the remaining records exist, the remaining records are deleted.

The method also includes the following features:

The NFC tag M generates the first detection record in the detection area in the process of entering the detection area, and the NFC tag M generates the last detection record in the detection area in the process of leaving the detection area; therefore, the NFC tag M Normally passing through the detection area of an NFC card reader to Generate fewer probe records.

The detection records generated by the label M in each detection area in the NFC terminal network are sorted according to the sequence of recording time, including: generating a label M in each detection area in the NFC terminal network in a statistical period The detection records are sorted according to the order of recording time;

After processing each probe record group, the method further includes:

S30, detecting whether the camping time period of each probe record group of the label M in the NFC terminal network has an inclusion relationship, and for the probe record group having the inclusion relationship of the resident time period, deleting the probe record group with a short residence period; a probe record group represents a resident of the tag M in the detection area, and the dwell time period of the probe record group starts from the recording time of the first probe record, and ends at the recording time of the last probe record;

For example, the dwell period of the first probe group is: 7:10:40 to 7:10:50, and the dwell period of the second probe group is: 7:10:20:7:10 In 50 seconds, since the dwell period of the second probe record group includes the dwell period of the first probe record group, and the dwell period of the first probe record group is shorter, the data of the first probe record group is deleted. .

Wherein, the detection records are grouped, including:

Determine whether the recording interval of two adjacent detection records is less than the separation threshold, and if so, classify the two detection records into the same detection record group, and if not, separate the two detection records into two detection records. In the record group.

The partitioning threshold is a minimum time interval, which is an empirical value, according to the movement rule of the NFC tag in the NFC terminal network, after the NFC tag leaves the detection area of an NFC card reader and then enters the detection area again. For example, after observing the movement behavior of the NFC tag in the NFC terminal network, it is found that: after an NFC tag leaves the detection area of an NFC card reader, it generally goes to the detection area of the adjacent NFC card reader, and for a short time. It is unlikely that it will return to the previous detection area again. Therefore, if the detection period of the NFC card reader is 10 seconds, in order to distinguish the two residences of the same NFC tag in the same detection area, the separation The threshold can be set to a risk value (for example, 1 minute, or other value). As shown in FIG. 3, an embodiment of the present invention provides a data pre-processing for an NFC terminal network application. Processing system, the system includes:

a grouping module, configured to sort the detection records generated by the label M in each detection area in the NFC terminal network according to the order of recording time, and then group the detection records, so that a group of detection records after the group represents the label M One dwell in the detection area;

The system also includes the following features:

The NFC tag M generates the first detection record in the detection area in the process of entering the detection area, and the NFC tag M generates the last detection record in the detection area in the process of leaving the detection area; therefore, the NFC tag M At least two probe records are generated when passing through the detection area of an NFC reader. Wherein, the system further comprises a multi-read data processing module;

The multi-read data processing module is configured to detect whether a dwell period of each probe record group of the tag M in the NFC terminal network has an inclusion relationship, and a dive time for the probe record group having an inclusion relationship for the dwell period a short detection record group;

Wherein, a probe record group represents a time of the tag M in the detection area, and the time zone of the probe record group starts from the record time of the first probe record, and ends at the record time of the last probe record. The grouping module groups the probe records, including:

The grouping module determines whether the recording time interval of the two adjacent probe records is less than the partitioning threshold, and if so, the two probe records are classified into the same probe record group, and if not, the two probe records are respectively returned Entering into the two detection record groups; wherein the separation width is determined according to the movement rule of the NFC tag in the NFC terminal network, and the NFC tag is re-entered into the detection area after leaving the detection area of an NFC card reader. The minimum time interval, usually the empirical value. The data preprocessing method and system for the NFC terminal network application provided by the foregoing embodiment, by grouping the data of the label M in each detection area, so that a group of detection records after the group represents the label M in the detection area. If the number of records included in the probe record group is greater than or equal to two, only the first and last records are retained, and the remaining records are deleted, which can solve the underlying data redundancy problem in the NFC terminal network application. By comparing the dwell time periods of the redundantly processed probe record group data of the tag M in each detection area, for the probe record group having the inclusion relationship of the resident time period, the detection record with the short residence time period is deleted. Group, can solve the under-data multi-read problem that occurs in NFC terminal network applications.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits. Accordingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, or may use software functions. The form of the module is implemented. Embodiments of the invention are not limited to any particular form of combination of hardware and software.

It should be noted that the present invention may be embodied in various other embodiments, and those skilled in the art can make various corresponding changes and embodiments according to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Modifications, but such corresponding changes and modifications are intended to fall within the scope of the appended claims.

Industrial applicability

The data preprocessing method and system for the NFC terminal network application provided by the embodiment of the present invention, by grouping the data of the label M in each detection area, so that a group of detection record groups after the group represents the label M in the detection area. For one time, if the number of records included in the probe record group is greater than or equal to two, only the first and last records are retained, and the remaining records are deleted, which can solve the underlying data redundancy problem occurring in the NFC terminal network application. By comparing the dwell time periods of the redundantly processed probe record group data of the tag M in each detection area, for the probe record group having the inclusion relationship of the resident time period, the detection record with the short residence time period is deleted. Group, can solve the under-data multi-read problem that occurs in NFC terminal network applications.

Claims

claims

1. A data preprocessing method for NFC terminal network applications, including:

The detection records generated by tag M in each detection area in the near field communication NFC terminal network are sorted according to the order of recording time, and then the detection records are grouped, so that a grouped detection record group represents the detection record of tag M in that area. One dwell in the detection area;

Processing of each detection record group includes: If the number of records contained in the detection record group is greater than or equal to two, only the first and last two records will be retained. If other records exist, the remaining records will be deleted.

2. The method of claim 1, wherein after processing each detection record group, it further includes:

Detect whether the residence time periods of each detection record group of tag M have an inclusive relationship. For the detection record groups whose residence time periods have an inclusive relationship, delete the detection record groups with short residence time periods;

Among them, a detection record group represents a residence of tag M in the detection area. The residence time period of the detection record group starts from the recording time of the first detection record and ends at the recording time of the last detection record.

3. The method according to claim 1 or 2, wherein the step of grouping detection records includes:

Determine whether the recording time interval of two adjacent detection records is less than the separation threshold. If so, the two detection records will be classified into the same detection record group. If not, the two detection records will be classified into two detection records respectively. in record group;

Wherein, the separation threshold is the minimum time interval for the NFC tag to leave the detection area of a certain NFC card reader and then enter the detection area again, which is determined based on the movement pattern of the NFC tag in the NFC terminal network.

4. The method of claim 3, wherein the separation threshold is an empirical value.

5. A data preprocessing system for NFC terminal network applications, including:

The grouping module is configured to sort the detection records generated by the tag M in each detection area in the near field communication NFC terminal network according to the order of recording time, and then sort the detection records Grouping is performed so that a grouped detection record group represents a stay of the tag M in the detection area; a redundant data processing module is configured to process each detection record group, including: such as the number of records contained in the detection record group If it is greater than or equal to two, only the first and last two records will be retained. If other records exist, the remaining records will be deleted.

6. The system according to claim 5, further comprising a multi-read data processing module;

The redundant data processing module is also configured to notify the multi-read data processing module after processing each detection record group;

The multi-read data processing module is configured to detect whether the residence time period of each detection record group of tag M has an inclusive relationship, and for the detection record group with an inclusive relationship in the residence time period, delete the detection record with a short residence time period. Group;

Among them, a detection record group represents a residence of the tag M in the detection area. The residence time period of the detection record group starts from the recording time of the first detection record and ends at the recording time of the last detection record.

7. The system according to claim 5 or 6, wherein the grouping module groups detection records means:

The grouping module determines whether the recording time interval of two adjacent detection records is less than the separation threshold. If so, the two detection records are classified into the same detection record group. If not, the two detection records are classified separately. into two detection record groups;

8. The system of claim 7, wherein the separation threshold is an empirical value.