KR102055830B1 - Mobile communication system and method applying data packet manipulation for mission critical service - Google Patents

Abstract

An apparatus for transmitting data packets is provided. The apparatus for transmitting a data packet includes a packet generator for generating an original data packet, a copying determining unit for determining whether a copy condition for the original data packet is satisfied, and a copy packet for the original data packet if the copy condition is satisfied. A packet replicating unit for generating at least one copy data packet, and a transmitting unit for transmitting the original data packet and the at least one copy data packet.

Description

Mobile communication system and method applying data packet processing for mission critical service {MOBILE COMMUNICATION SYSTEM AND METHOD APPLYING DATA PACKET MANIPULATION FOR MISSION CRITICAL SERVICE}

The present invention relates to a mobile communication system and method, and more particularly, to a mobile communication system and method to which data packet processing for a mission critical service is applied.

With the improvement of living standards and the development of information and communication technology, the vast majority of people possess and use personal mobile terminals such as cell phones. Recently, not only the classic communication functions such as call or text message service (SMS), but also smart phones (smartphone) that can provide various kinds of mobile communication services such as Internet, multimedia service, games, navigation, etc. Multifunctional portable terminals such as are popularized.

In particular, the 5G (5-Generation) system, which is a future mobile communication system, is able to transmit a larger amount of data at a higher speed, and therefore, various types of services are expected to be provided to users.

On the other hand, Transmission Control Protocol / Internet Protocol (TCP / IP) and User Datagram Protocol (UDP) communication methods are very sensitive to delay or loss of data, and performance decreases rapidly as the delay or loss of data increases. Therefore, it is required to prevent delay or loss of data to ensure communication performance. In particular, when urgently important data needs to be sent, that is, when mission-critical services are required, there is a greater need to prevent delay or loss of data.

Korean Laid-Open Patent Publication No. 10-2012-0023150 (published Mar. 12, 2012)

An object of the present invention is to provide a mobile communication system and method capable of reducing delay and loss of data when transmitting and receiving data packets.

However, the problem to be solved by the embodiments of the present invention is not limited to those mentioned above, another problem to be solved is not mentioned will be clearly understood by those skilled in the art from the following description. Could be.

According to an embodiment of the present invention, a data packet transmission apparatus of a mobile communication system includes a packet generation unit for generating an original data packet, a replication whether determination unit for determining whether a replication condition for the original data packet is satisfied, and the replication. A packet replicating unit for generating at least one copy data packet for the original data packet when a condition is satisfied, and a transmitting unit for transmitting the original data packet and the at least one copy data packet.

According to an embodiment of the present invention, a data packet receiving apparatus of a mobile communication system includes a receiver for receiving a data packet, a duplicate packet determination unit for determining whether a duplicate packet of the received data packet exists, and the duplicate packet exists If it is determined that, the first received packet determination unit for determining whether the received data packet is received first in the packet group including the received data packet and the duplicate packet, and the determination result of the first received packet determination unit And a packet processing unit for processing the received data packet.

According to another aspect of the present invention, there is provided a method of transmitting a data packet, comprising: generating an original data packet, extracting characteristic information of the original data packet, and allowing the extracted characteristic information to be copied; A duplicate condition determination step of determining whether a duplicate condition for the original data packet is satisfied by comparing the list of information, and generating at least one copy data packet for the original data packet if the duplicate condition is satisfied; Generating a copy data packet; and transmitting a data packet for transmitting the original data packet and the at least one copy data packet.

According to another aspect of the present invention, a method of receiving a data packet includes receiving a data packet and receiving the data packet based on the received data packet without comparing the received data packet with a previously received data packet. Determining whether a duplicate packet exists, and if it is determined that the duplicate packet exists, the received packet in the packet group including the received data packet and the duplicate packet And an initial received packet determining step of determining whether a data packet is received first, and a packet processing step of processing the received data packet according to a determination result of the first receiving packet determining unit.

According to an embodiment of the present invention, when a data packet is transmitted, a data packet is copied and transmitted according to whether a replication condition is satisfied, and a data packet (that is, an original data packet and a copy data packet that is duplicated when the data packet is received). By performing subsequent processing using one of the packets, it is possible to reduce the delay and loss of data transmission and reception without greatly increasing the complexity of the mobile communication system, thereby increasing the reliability of data packet transmission and reception and mission-critical services. Can be provided stably.

1 is a diagram illustrating a configuration of a mobile communication system to which data packet processing for a mission critical service is applied according to an embodiment of the present invention.
2 is a view for explaining the configuration of a terminal as a data packet transmission apparatus of a mobile communication system according to an embodiment of the present invention.
3 is a view for explaining the configuration of a user plane function (UPF) device as a data packet receiving device of a mobile communication system according to an embodiment of the present invention.
4 is a view for explaining a data packet transmission method according to an embodiment of the present invention.
5 is a view for explaining a data packet receiving method according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims.

In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. The terms to be described below are terms defined in consideration of functions in the embodiments of the present invention, which may vary according to the intention or custom of the subscriber or the operator. Therefore, the definition should be made based on the contents throughout the specification.

1 is a diagram illustrating a configuration of a mobile communication system to which data packet processing for a mission critical service is applied according to an embodiment of the present invention.

The mobile communication system 10 of FIG. 1 is a system for providing a mobile communication service to a user of the terminal 100. The terminal 100, a user plane function (UPF) device 200, and a control device ( 300) and a radio access network (RAN). However, since the connection relationship between the components of the mobile communication system 10 of FIG. 1 and each component to be described below is only one embodiment of the present invention, the technical idea of the present invention is limitedly interpreted by FIG. 1. no. The mobile communication system 10 may be assumed to be a 5G mobile communication system to be implemented in the future, but is not necessarily limited thereto.

The terminal 100 transmits or receives a data packet with a wide area network 500 such as a data network (DN) based on the Internet to provide a mobile communication service to a user of the terminal 100. Can provide. The terminal 100 may be, for example, a hand-held based mobile communication device that guarantees portability and mobility, such as a smartphone, a tablet PC, and a smart watch.

The user plane function apparatus 200 may perform a function for transferring a data packet transmitted by the terminal 100 through the RAN 400 to a destination of the wide area network 500, and of course, the terminal from the wide area network 500. The same function may be performed for the data packet in the opposite direction to 100. To this end, the RAN 400 and the user plane function device 200 may exist between the terminal 100 and the wide area network 500.

That is, the user plane function device 200 is a device that is responsible for the function of the user plane (user plane) of the mobile communication system. Accordingly, the user plane function device 200 performs a function of data packet delivery, a modification, data quality of service (QoS) management, data packet filtering, and the like, together with a data packet forwarding function. You may.

The control device 300 operates the other components of the mobile communication system 10 (eg, the terminal 100, the user plane function device 200, and the RAN 400) through transmission of control plane data. Can be controlled. The control device 300 may include various sub-components for the operation of the control plane. In some cases, the control device 300 may be connected to a separate application device 600 existing outside the mobile communication system 10 to receive a specific service from the application device 600. The control device 300 may be, for example, a Network Exposure Function (NEF), a Network Repository Function (NRF), a Policy Control Function (PCF), a Unified Data Management (UDM), an Application Function (AF), an Authentication Server Function (AUSF), or an AMF. (Access & Mobility Management Function) and Session Management Function (SMF).

The RAN 400 is a component for providing a mobile communication connection to the terminal 100, and may be, for example, a base station (eNodeB).

The terminal 100 generates a data packet and transmits the data packet to the wide area network 500 through the RAN 400 and the user plane function device 200, and conversely, the user plane function device 200 and the RAN (from the wide area network 500). In operation 400, a delay or loss of a data packet may occur. In particular, the delay or loss of the data packet is likely to occur during the transmission and reception process between the terminal 100 and the user plane function device 200. Therefore, there is a need to prevent data packet delay or reception in this process. Hereinafter, a method of reducing data packet delay or reception according to an embodiment of the present invention will be described.

2 is a view for explaining the configuration of a terminal as a data packet transmission apparatus of a mobile communication system according to an embodiment of the present invention.

In this embodiment, since the terminal 100 transmits a data packet to the user plane function device 200, the terminal 100 may be a data packet transmission device, and the user plane function device ( 200 may be a data packet receiving apparatus. Of course, according to the embodiment, if the terminal 100 receives a data packet from the user plane function device 200, the terminal 100 is a data packet receiving device and the user plane function device 200 transmits a data packet It could be a device.

Referring to FIG. 2, the terminal 100 includes a packet generation unit 110, a replication whether determination unit 120, a packet replication unit 130, and a transmission unit 140.

The packet generator 110 generates an original data packet to be transmitted to the user plane function device 200 through the RAN 400.

The duplicate determination unit 120 receives an original data packet generated by the packet generator 110 and determines whether a duplicate condition for the original data packet is satisfied. The duplication determination unit 120 extracts the 'characteristic information' of the original data packet, and compares the extracted characteristic information with a list of characteristic information (hereinafter, 'replication allowed characteristic information list') that allows the data packet to be replicated. It is possible to determine whether the replication condition is satisfied. That is, the duplication determination unit 120 may determine that the replication condition is satisfied when the characteristic information of the original data packet is included in the replication allowable characteristic information list, or may determine that the replication condition is not satisfied.

The characteristic information may be related to N-tuple flow information. That is, the characteristic information may be related to the type of N fields (N is a natural number of 1 or more) designated among various types of fields included in the data packet. Here, the data packet is not limited to the L3 IP packet, and can be applied to various kinds of data packets L2 to L7. For example, the characteristic information may be related to 5-tuple flow information consisting of source IP, destination IP, source port, destination port and protocol number, and related to the kind of other fields related to session or application. May be As described later, the characteristic information may be included in the header or payload of the data packet by the packet replication unit 130. For example, the packet replica unit 130 may include a hash value of the N-tuple flow information in the header or payload of the data packet. The terminal 100 may receive a copy permission characteristic information list from the control device 300 and store it in a storage unit (not shown) of the terminal 100.

The duplication determination unit 120 determines whether the duplication condition is satisfied based on at least one of the customer profile of the terminal 100, the location of the terminal 100 (ie, the location of the customer), the current time, and the size of the original data packet. You can also judge. For example, the duplication determination unit 120 may determine that the duplication condition is satisfied when the terminal 100 of a specific customer (for example, a high-priced subscription user) is in a specific place at a specific time.

When the duplication determination unit 120 determines that the duplication condition for the original data packet is satisfied, the packet duplication unit 130 generates at least one copy data packet for the original data packet, and generates the original data packet and the copy. Output a data packet. Specifically, the packet replication unit 130 generates a copy data packet having the same payload as the original data packet. The packet replication unit 130 generates 'content information' (ie, information for distinguishing a data packet having a different payload from the original data packet) related to the content of the payload of the original data packet, thereby generating the original data packet and the copy data. It can be included in the header or payload of the packet. For example, the content information may be a hash value for the content of the payload of the original data packet. This content information may be used later to determine whether the first received packet determiner 230 is the first data packet received for the same payload. The packet duplication unit 130 may generate a header of the copy data packet so that the copy data packet includes information indicating that the original data packet is duplicated. In addition, the packet replication unit 130 may generate a header of the copy data packet to include information indicating the number of copies of the original data packet. Of course, in order to simplify the configuration of the terminal 100, the packet replication unit 130 may generate a header of the copy data packet to be identical to the header of the original data packet.

If the duplication determination unit 120 determines that the duplication condition for the original data packet is satisfied, the packet duplication unit 130 may output the original data packet without generating a copy data packet.

The transmitter 140 may transmit the original data packet and the copy data packet output from the packet copying unit 130 to the user plane function device 200 (that is, the data packet receiving device) through the RAN 400. For example, when the packet replica unit 130 generates M-1 copy data packets, the total number of original data packets and copy data packets is M (M is a natural number of 2 or more). The transmitter 140 does not necessarily transmit the original data packet first, but may transmit the M data packets in any order. In the process of transmitting the M data packets sequentially, the transmitter 140 sequentially waits a predetermined waiting time (for example, several nanoseconds) after transmitting the i-th (i is a natural number of 1≤i≤M-1) data packet. The i + 1th data packet can be transmitted later. The transmitter 140 may transmit data packets other than M data packets (that is, data packets having different payloads) in the waiting time. Of course, if the packet replica unit 130 does not generate a copy data packet, the transmitter 140 may transmit the original data packet without transmitting the copy data packet.

As such, when the terminal 100 transmits a total of M data packets by duplicating the original data packet according to a predetermined condition, even if some of the M data packets are delayed or lost (even if only one data packet arrives extremely) The packet receiving apparatus may acquire the payload of the original data packet to be transmitted by the terminal 100 without a large delay and without loss. Therefore, delay and loss in the data packet transmission process can be reduced.

On the other hand, according to the control of the control device 300 (for example, based on the characteristics of the customer using the terminal 100, such as a rate plan, the situation of the communication network, etc.), whether or not the duplication determination unit 120 and the packet of the terminal 100 Whether or not to activate the function of the replica 130 may be determined. That is, when the corresponding function is deactivated, the terminal 100 may operate without determining the replication condition and copying the data.

3 is a view for explaining the configuration of a user plane function (UPF) device as a data packet receiving device of a mobile communication system according to an embodiment of the present invention.

In the present embodiment, since the user plane functional device 200 receives a data packet from the terminal 100, the user plane functional device 200 may be a data packet receiving device. 100 may be a data packet transmission apparatus. Of course, according to an embodiment, if the user plane function device 200 transmits a data packet to the terminal 100, the user plane function device 200 may be a data packet transmission device, the terminal 100 is It may also be a data packet receiving apparatus.

Referring to FIG. 3, the user plane function device 200 includes a receiver 210, a duplicate packet determiner 220, an initial received packet determiner 230, a packet processor 240, a transfer unit 250, and a buffer ( 260).

The receiver 210 receives a data packet from the terminal 100 through the RAN 400.

The duplicate packet determination unit 220 determines whether there is a duplicate packet of a data packet (hereinafter, referred to as a 'received data packet') received by the receiver 210 (or more specifically, whether the duplicate packet is generated in the terminal 100). To judge. Here, the duplicate packet means a data packet having the same payload as the received data packet. For example, when the received data packet is a copy data packet, the original data packet may be a duplicate packet of the received data packet, and when the received data packet is an original data packet, the copy data packet may be a duplicate packet of the received data packet. That is, the case where the received data packet is i) the copy data packet and ii) the original data packet with the copy data packet is the case where the duplicate packet exists.

The duplicate packet determination unit 220 may determine whether a duplicate packet exists without discriminating whether the received data packet is an original data packet or a copy data packet. In detail, the duplicate packet determination unit 220 determines whether a duplicate packet exists by extracting 'characteristic information' of the received data packet and comparing the extracted characteristic information with a list of characteristic information indicating that a duplicate packet exists. Can be. That is, the duplicate packet determination unit 220 is a list of characteristic information (that is, duplicate allowed characteristic information list) in which the characteristic information of the received data packet (for example, the hash value of the N-tuple flow information) allows the duplicate data packet. ), It may be determined that the replication condition is satisfied, otherwise it may be determined that the replication condition is not satisfied.

The characteristic information may be related to 5-tuple flow information consisting of, for example, a source IP, a destination IP, a source port, a destination port, and a protocol number, and may be included in a header of a received data packet. . For example, the hash value of the 5-tuple flow information may be included in the header of the received data packet. The user plane function device 200 may receive a copy permission characteristic information list from the control device 300 and store it in a buffer 260 or a storage unit (not shown) of the user plane function device 200.

The duplicate packet determination unit 220 determines whether a duplicate packet exists based on at least one of a customer profile of the terminal 100, a position of the terminal 100 (ie, a position of the customer), a current time, and a size of a received data packet. You can also judge. For example, the duplicate packet determination unit 220 may determine that a duplicate packet exists when the terminal 100 of a specific customer (for example, a high-priced subscription user) is in a specific place at a specific time.

When the duplicated packet determiner 220 determines that there is a duplicate packet for the data packet received by the receiver 210, the first received packet determiner 230 includes the received data packet and the duplicated packet (preferably Determines whether the received data packet is first received among the 'packet group' including only these. For example, the first received packet determiner 230 may store the 'content information' related to the content of the payload of the received data packet (that is, information for distinguishing the data packet having a different payload from the received data packet). It is determined whether the received data packet is received first according to whether it is stored at 260. In detail, if the content information of the received data packet is not stored in the buffer 260, the first received packet determiner 230 determines that the received data packet is received first among the packet group, and the content information of the received data packet is determined. If it is already stored in the buffer 260, it is determined that the received data packet is not the first received among the packet group. As described above with respect to the packet replication unit 130, the content information may be a hash value for the payload of the data packet. In this case, the first received packet determiner 230 checks whether a hash value (that is, content information) included in the header or payload of the received data packet is stored in the buffer 260, thereby easily and quickly receiving the received packet. It may be determined whether the data packet is received first of the packet group.

The packet processor 240 processes the received data packet differently according to the determination result of the first received packet determiner 230. For example, when the first received packet determiner 230 determines that the received data packet is received for the first time in the packet group, the packet processor 240 outputs the received data packet, and also outputs the content information of the received data packet. May be stored in the buffer 260. On the other hand, when the first received packet determiner 230 determines that the received data packet is not the first received among the packet group, the packet processor 240 may discard the received data packet.

In addition, when the duplicate packet determination unit 220 determines that the duplicate packet of the received data packet does not exist, the packet processing unit 240 may output the received data packet.

The transmitter 250 transmits the received data packet output from the packet processor 240 to the wide area network 500.

The buffer 260 stores the content information of the received data packet. The buffer 260 may store and discard content information only for a predetermined time. In addition, the buffer 260 may discard the content information viewed by the first received packet determiner 230 a predetermined number of times (eg, the sum of the number of original data packets and copy data packets).

As such, even if a plurality of data packets (that is, packet groups) composed of an original data packet and at least one copy data packet are received, the user plane functional apparatus 200 performs subsequent processing on one data packet first received therefrom. (For example, forwarding to wide area network 500) and the remaining data packets are discarded, so that subsequent processing may not be performed on data packets having the same payload in duplicate. In addition, even if some of the data packets in the packet group are lost, if any one of them is received, subsequent processing is possible for subsequent processing of the payload of the original data packet that the terminal 100 intends to transmit without a large delay and without loss because subsequent processing is possible. Can be performed.

On the other hand, according to the control of the control device 300 (for example, based on the characteristics of the customer using the terminal 100, such as a plan, the situation of the communication network, etc.), the duplicate packet determination unit 220 of the user plane function device 200 ) And whether the function of the first received packet determination unit 230 is activated. That is, when the corresponding function is deactivated, the user plane function device 200 may operate without determining whether a duplicate packet exists or not as a first received packet.

4 is a view for explaining a data packet transmission method according to an embodiment of the present invention. This method may be performed by the terminal 100 when the terminal 100 transmits the data packet to the wide area network 500 through the user plane function device 200. Of course, if the user plane function device 200 transmits a data packet to the terminal 100, this method may be performed by the user plane function device 200. However, at least one of the steps illustrated in FIG. 4 may not be performed or may be performed differently from the order of the illustrated steps, and other steps not shown may be performed. Here, the case where the terminal 100 transmits a data packet (that is, when the terminal 100 is a data packet transmission device) will be described as an example.

Referring to FIG. 4, first, the terminal 100 generates an original data packet (S410). Thereafter, the terminal 100 determines whether a replication condition for the original data packet is satisfied (S420). If it is determined that the replication condition is satisfied, the terminal 100 generates at least one copy data packet for the original data packet (S430). Thereafter, the terminal 100 transmits an original data packet and a copy data packet (S440). If it is determined that the replication condition is not satisfied, the terminal 100 transmits the original data packet without generating a copy data packet (S440).

5 is a view for explaining a data packet receiving method according to an embodiment of the present invention. This method may be performed by the user plane function device 200 when the user plane function device 200 receives a data packet from the terminal 100. Of course, if the terminal 100 receives the data packet from the user plane function device 200, this method may be performed by the terminal 100. However, at least one of the steps illustrated in FIG. 5 may not be performed or may be performed differently from the order of the illustrated steps, and other steps not shown may be performed. Here, an example will be described when the user plane functional device 200 receives a data packet (that is, the user plane functional device 200 is a data packet receiving device).

Referring to FIG. 5, first, the user plane functional apparatus 200 receives a data packet from the terminal 100 (S510). The user plane function apparatus 200 determines whether a duplicate packet of the received data packet (hereinafter, 'received data packet') exists or not (S520).

If it is determined that there is no duplicate packet of the received data packet, the user plane function device 200 transmits the received data packet to the wide area network 500 (ie, subsequent processing) (S530).

If it is determined that there is a duplicate packet of the received data packet, the user plane functional apparatus 200 determines whether the received data packet is first received in a packet group including the received data packet and the duplicate packet (S540).

If it is determined that the received data packet is received first in the packet group including the received data packet and the duplicate packet, the user plane functional device 200 forwards the received data packet to the wide area network 500 (ie, subsequent Processing) (S550). Thereafter, the user plane function device 200 stores the content information of the received data packet in the buffer 260 (S560).

If it is determined that the received data packet is not the first received in the packet group including the received data packet and the duplicate packet, the user plane function device 200 discards the received data packet (S570).

The case where the data packet transmitting apparatus is the terminal 100 and the data packet receiving apparatus is the user plane functional apparatus 200, and the method in which the terminal 100 transmits the data packet and the user plane functional apparatus 200 are the data packets Although a description has been given mainly for a method of receiving the present invention, the present invention is not limited thereto. For example, the RAN 400 or the PCF, AF, AMP or SMF of the control device 300 may also be the above-described data packet transmitter or the above-described data packet receiver.

According to the data packet transmitting apparatus, the data packet receiving apparatus, the data packet transmitting method, and the data packet receiving method according to one embodiment of the present invention described above, the data packet transmission / reception without greatly increasing the complexity of the mobile communication system Since delay and loss can be reduced, it is possible to improve the reliability of data packet transmission and reception and to stably provide mission critical services.

Combinations of each block of the block diagrams and respective steps of the flowcharts attached to the present invention may be performed by computer program instructions. These computer program instructions may be mounted on an encoding processor of a general purpose computer, special purpose computer, or other programmable data processing equipment such that the instructions executed by the encoding processor of the computer or other programmable data processing equipment are not included in each block or block diagram. It will create means for performing the functions described in each step of the flowchart. These computer program instructions may be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, and thus the computer usable or computer readable memory. It is also possible for the instructions stored therein to produce an article of manufacture containing instruction means for performing the functions described in each block or flow chart step of the block diagram. Computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operating steps may be performed on the computer or other programmable data processing equipment to create a computer-implemented process to create a computer or other programmable data. Instructions that perform processing equipment may also provide steps for performing the functions described in each block of the block diagram and in each step of the flowchart.

In addition, each block or step may represent a portion of a module, segment or code that includes one or more executable instructions for executing a specified logical function (s). It should also be noted that in some alternative embodiments, the functions noted in the blocks or steps may occur out of order. For example, the two blocks or steps shown in succession may in fact be executed substantially concurrently or the blocks or steps may sometimes be performed in the reverse order, depending on the functionality involved.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential quality of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas that fall within the scope of equivalents should be construed as being included in the scope of the present invention.

According to an embodiment of the present invention, when a data packet is transmitted, a data packet is copied and transmitted according to whether a replication condition is satisfied, and a data packet (that is, an original data packet and a copy data packet that is duplicated when the data packet is received). By performing subsequent processing using one of the packets, it is possible to reduce the delay and loss of data transmission and reception without significantly increasing the complexity of the mobile communication system, thereby stably providing a mission critical service.

10: mobile communication system
100: terminal
200: user plane function device
300: control unit
400: RAN
500: wide area network
600: application device

Claims (12)

In the data packet transmission method,
Generating an original data packet, generating an original data packet;
Determination of a replication condition for determining whether a replication condition for the original data packet is satisfied by extracting the characteristic information of the original data packet and comparing the extracted characteristic information with a list of characteristic information allowing replication of the data packet. Steps,
A copy data packet generation step of generating at least one copy data packet for the original data packet when the copying condition is satisfied;
A data packet transmission step of transmitting the original data packet and the at least one copy data packet,
And the original data packet comprises a header or payload of the data packet.
The method of claim 1,
The characteristic information is associated with N predetermined field types (N is a natural number of 1 or more) included in the original data packet.
How to send a data packet. The method of claim 2,
The characteristic information is associated with at least one of a source IP, a destination IP, a source port, a destination port, and a protocol number.
How to send a data packet. The method of claim 1,
In the duplication condition determination step,
Determining whether the replication condition is satisfied by further considering at least one of a customer profile of the data packet transmission apparatus performing the data packet transmission method, a location of the data packet transmission apparatus, and a current time.
How to send a data packet.
In the data packet receiving method,
A data packet receiving step of receiving a data packet;
Determining whether a duplicate packet exists, based on the received data packet, without comparing the received data packet with a previously received data packet, and determining whether a duplicate packet of the received data packet exists;
An initial received packet determination step of determining whether the received data packet is first received in the packet group including the received data packet and the duplicate packet when it is determined that the duplicate packet exists;
A packet processing step of processing the received data packet according to a determination result of the first received packet determination unit;
And the received data packet comprises a header or payload of the data packet.
The method of claim 5,
The step of determining whether the duplicate packet exists,
Extracting the characteristic information of the received data packet and determining whether the duplicate packet exists by comparing the extracted characteristic information with a list of characteristic information indicating that a duplicate packet exists.
How to Receive Data Packets.
The method of claim 6,
The characteristic information is associated with N predetermined field types (N is a natural number of 1 or more) included in the received data packet.
How to Receive Data Packets.
The method of claim 5, wherein
The packet processing step,
If it is determined that the received data packet is received first in the packet group, output the received data packet, and if it is determined that the received data packet is not received first in the packet group, the reception Discarding the collected data packet
How to Receive Data Packets.
The method of claim 5, wherein
The packet processing step,
If it is determined that the received data packet is received first in the packet group, storing content information of the received data packet in a buffer;
The first received packet determination step,
Determining whether the received data packet is first received in the packet group based on whether the content information of the received data packet is stored in the buffer;
How to Receive Data Packets.
The method of claim 5, wherein
The step of determining whether the duplicate packet exists,
Determining whether the duplicate packet exists based on at least one of a customer profile, a location of the customer, and a current time of day;
How to Receive Data Packets.
A computer readable memory storing a computer program comprising instructions for causing a processor to perform a method according to any of claims 1 to 10.
A computer program stored in a computer readable memory, comprising instructions for causing the method according to any one of claims 1 to 10 to be performed.

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