JP2011259256A - Data processor and data processing system, computer program and data processing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data processor which can secure a band on a core network corresponding to application traffic without taking any special countermeasure to the application.SOLUTION: A packet transmitting/receiving means 13 secures a network band on a core network 3 and transmits/receives a node 2 and a packet. A buffer amount measuring means 111 acquires the amount of packet transmission/reception buffers used by the transmitted/received packet. A band change means 12 changes the network band according to the amount of acquired packet transmission/reception buffers used.

Description

  The present invention relates to a data processing device that transmits and receives packets between a core network and a node, a data processing system including the data processing device, a core network, and a node, a computer program of the data processing device, and a data processing method.

  If the bandwidth used by the application changes dynamically, the application must issue an instruction to change the guaranteed network bandwidth value, requiring a dedicated application with a bandwidth change interface rather than a general purpose application. Become.

  For example, there is a proposal of a communication control device that can efficiently reduce the number of discarded packets due to narrowing of a communication path when performing communication while complementing the band using a plurality of different wireless communication paths.

  In the technology, the bandwidth state of each wireless communication path is monitored based on the received packet, and based on the monitoring result, transmission bandwidth restriction information for restricting the transmission bandwidth of the packet for the wireless communication path whose bandwidth is narrowed is transmitted to the packet transmission side. And the predicted allowable bandwidth of the wireless communication path excluding the narrowed wireless communication path is analyzed based on the packet received through the wireless communication path.

  Then, the transmission bandwidth control information for widening the transmission bandwidth of the packet for the wireless communication route capable of widening the transmission bandwidth of the packet is transmitted to the packet transmission side, resulting in the narrowing of the communication route. The number of discarded packets is efficiently reduced (Patent Document 1).

  There is also a proposal of a communication terminal capable of estimating the available bandwidth considering the influence even when a plurality of applications use the network at the same time. In that technology, the communication application means realizes communication with a communication partner. The network transmission / reception means is commonly used for a plurality of applications using the network.

  The integrated band estimation means acquires data communication information of data received from the communication partner by the network transmission / reception means during execution of a plurality of applications. The integrated band estimation means estimates the available band with the communication terminal of the communication partner based on the data communication information in a predetermined period (Patent Document 2).

JP 2008-167026 A JP 2010-062720 A

  The traffic shaper determines the priority of traffic within a predetermined network bandwidth and smoothes the packet, but cannot dynamically change the bandwidth value of the core network according to the increase or decrease of traffic.

  For this reason, a certain network resource is always occupied, and the network cannot be used effectively. For example, if the fee structure of the core network is pay-per-use that is proportional to the bandwidth, the usage fee cannot be suppressed using the minimum necessary bandwidth.

  The present invention has been made in view of the above-described problems, and a data processing apparatus capable of securing a bandwidth of a core network corresponding to application traffic without specially dealing with the application, and the data A data processing system having a processing device, a computer program for the data processing device, and a data processing method are provided.

  The data processing apparatus according to the present invention is obtained by a packet transmission / reception unit that secures a network bandwidth in a core network and transmits / receives a packet to / from a node, a buffer amount measurement unit that acquires a usage amount of a packet transmission / reception buffer by a transmitted / received packet, And a bandwidth changing means for increasing the network bandwidth when the used amount of the packet transmission / reception buffer is equal to or greater than a predetermined threshold.

  The data processing system of the present invention includes a core network in which a network bandwidth is secured, a node that transmits and receives packets in the secured network bandwidth, and a data processing apparatus of the present invention that changes the network bandwidth.

  The computer program of the present invention is obtained by a packet transmission / reception process that secures a network bandwidth in a core network and transmits / receives a packet to / from a node, a buffer amount measurement process that acquires a usage amount of a packet transmission / reception buffer by a transmitted / received packet, When the usage amount of the packet transmission / reception buffer is equal to or greater than a predetermined threshold, the data processing device is caused to execute a bandwidth change process for increasing the network bandwidth.

  The data processing method of the present invention includes a packet transmission / reception operation for securing a network bandwidth in a core network and transmitting / receiving packets to / from a node, a buffer amount measurement operation for acquiring a packet transmission / reception buffer usage amount by packets transmitted / received, and And a bandwidth changing operation for increasing the network bandwidth when the usage amount of the packet transmission / reception buffer is equal to or greater than a predetermined threshold.

  It should be noted that the various components of the present invention need only be formed so as to realize their functions. For example, dedicated hardware that exhibits a predetermined function, data processing in which a predetermined function is provided by a computer program It can be realized as an apparatus, a predetermined function realized in the data processing apparatus by a computer program, an arbitrary combination thereof, or the like.

  The various components of the present invention do not necessarily have to be independent of each other. A plurality of components are formed as a single member, and a single component is formed of a plurality of members. It may be that a certain component is a part of another component, a part of a certain component overlaps with a part of another component, or the like.

  Moreover, although the computer program and the data processing method of this invention have described several process and operation | movement in order, the order of description does not limit the order which performs several process and several operation | movement.

  For this reason, when implementing the computer program and data processing method of the present invention, the order of the plurality of processes and the plurality of operations can be changed within a range that does not hinder the contents.

  Furthermore, the computer program and the data processing method of the present invention are not limited to being executed at a timing when a plurality of processes and a plurality of operations are individually different. For this reason, other processes and operations occur during execution of certain processes and operations, and the execution timing of certain processes and operations overlaps with the execution timing of other processes and operations. Etc.

  The data processing apparatus according to the present invention can read a computer program and execute a corresponding processing operation, so that a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an I / F It can be implemented as hardware constructed by general-purpose devices such as (Interface) units, dedicated logic circuits constructed to execute predetermined processing operations, combinations thereof, and the like.

  Further, the packet transmission / reception buffer referred to in the present invention refers to a packet transmission / reception buffer that temporarily stores a packet in a memory area called a buffer for the purpose of countermeasures for processing delays and efficiency of processing. In this case, packets are processed together.

  In the data processing apparatus of the present invention, a packet transmission / reception unit transmits and receives packets to and from a node while securing a network bandwidth in the core network. The buffer amount measuring means acquires the amount of the packet transmission / reception buffer used by the transmitted / received packet. If the acquired usage amount of the packet transmission / reception buffer is equal to or greater than a predetermined threshold, the bandwidth changing means increases the network bandwidth. Therefore, it is possible to secure the bandwidth of the core network according to the application traffic without taking any special measures for the application. The bandwidth of the core network can be used efficiently, and the fee structure according to the network bandwidth occupancy has the effect of reducing the usage fee.

It is a typical block diagram which shows the logical structure of the data processing system of embodiment of this invention. It is a flowchart which shows the data processing method by a data processor.

  An embodiment of the present invention will be described below with reference to the drawings. Referring to FIG. 1, the data processing system according to the present embodiment includes a core network 3 such as the Internet in which a network bandwidth is secured, a node 2 that transmits and receives packets in the secured network bandwidth, and data that changes the network bandwidth. And a processing apparatus 1.

  The data processing apparatus 1 according to the present embodiment secures a network bandwidth in the core network 3 and transmits / receives a packet to / from the node 2 and a buffer amount for acquiring a used amount of a packet transmission / reception buffer for the transmitted / received packet. Measuring means 111 and bandwidth changing means 12 for increasing the network bandwidth when the acquired usage amount of the packet transmission / reception buffer is equal to or greater than a predetermined threshold.

  More specifically, the data processing device 1 includes a traffic prediction unit 11, a bandwidth changing unit 12, and a packet transmitting / receiving unit 13. The node 2 is a terminal such as a PC (Personal Computer) or an application server, and includes various applications 21 and an OS (Operating System) 22.

  The traffic prediction unit 11 of the data processing apparatus 1 includes a buffer amount measurement unit 111, a traffic pattern analysis unit 112, a packet content analysis unit 113, and a node state acquisition unit 114.

  The buffer amount measuring unit 111 acquires the usage amount of the packet transmission / reception buffer in the data processing device 1. The traffic pattern analysis unit 112 analyzes the traffic pattern from the transmission source / destination information of the communication session and the amount of transmitted / received packets per unit time.

  The packet content analysis means 113 analyzes the contents of the packet and analyzes the communication protocol, content data type, data size, and the like. The node state acquisition unit 114 acquires the state of the node 2, for example, resources such as CPU load, memory usage, and disk access buffer.

  The bandwidth changing unit 12 changes the network bandwidth to be secured for the core network 3 and uses a bandwidth change interface published by the core network. The packet transmitting / receiving unit 13 transmits / receives a packet between the node 2 and the core network 3.

  Various means of the data processing apparatus 1 as described above are logically constructed by an installed computer program. Such a computer program includes, for example, a packet transmission / reception process that secures a network bandwidth in the core network 3 and transmits / receives a packet to / from the node 2, and a buffer amount measurement process that acquires a used amount of a packet transmission / reception buffer by the transmitted / received packet It is described that the data processing device 1 executes a bandwidth change process for increasing the network bandwidth when the acquired usage amount of the packet transmission / reception buffer is equal to or greater than a predetermined threshold.

  Next, the operation of the data processing apparatus 1 according to the present embodiment will be described with reference to FIGS. When the application 21 performs communication, the data processing apparatus 1 receives a packet through the packet transmitting / receiving means 13 (procedure A1).

  Next, the traffic predicting means 11 predicts the traffic when the packet is received. First, the use amount of the packet transmission / reception buffer of the data processing device 1 is acquired by the buffer amount measuring unit 111, and it is determined whether or not the amount is equal to or greater than a threshold (procedure A2).

  If it is equal to or greater than the threshold (procedure A2-Y), the occupied bandwidth of the core network is increased using the bandwidth change interface provided by the core network through the bandwidth changing means 12 (procedure A6). If it is equal to or less than the threshold (procedure A2-N), the process proceeds to the next.

  Next, the traffic pattern analysis unit 112 analyzes the traffic pattern from the transmission source / destination information of the communication session and the amount of transmitted / received packets per unit time (procedure A3).

  If the state where the bandwidth usage rate is high continues or if the traffic pattern matches the past / predefined pattern and an increase in the network bandwidth can be predicted, the network bandwidth is increased (procedure A6). In the opposite case, the network bandwidth is reduced (procedure A7). Otherwise, the process proceeds to the next process.

  Next, the packet content analysis unit 113 analyzes the contents of the packet in the same manner as ALG (Application Layer Gateway), and analyzes the communication protocol, the data type of the content, the data size, and the like (procedure A4).

  As a result of the analysis, if a new session is started, the network bandwidth is increased (procedure A6). If the content size flowing in the new session is known at this time, the value for increasing the network bandwidth can be specifically determined based on the value. In this case, the content size of the new session is determined, and the network bandwidth is increased if the content size is a predetermined value or more.

  On the other hand, if the analysis results in the end of the existing session, the network bandwidth is reduced (procedure A7). Otherwise, the process proceeds to the next process. Next, the node state acquisition unit 114 acquires the state of the node 2, for example, resources such as CPU load, memory usage, and disk access buffer.

  If the CPU load increases, the memory usage increases, or the disk access buffer usage increases, it is determined that the traffic has increased, and the network bandwidth is increased (procedure A6). In the opposite case, the network bandwidth is reduced (procedure A7). Otherwise, the process ends without performing any processing.

  This device smoothes communication packets by buffering them, predicts the new network bandwidth required by the application, and goes to the core network when the network bandwidth of the core network already secured is greatly exceeded or below. A function for changing the secured network bandwidth is provided.

  As described above, the data processing apparatus according to the present embodiment predicts the bandwidth from the contents of the packet, as described above, (1) the packet buffer amount in the apparatus, (2) the past traffic pattern, and (3) the packet contents. (4) Perform comprehensively by combining the states of nodes (servers or terminals such as PCs) on which the application operates.

  (2) is a traffic pattern including time zone, user, application type, communication pair (transmission source, transmission destination), and the like. (3) Analyzes the packet contents in the same way as ALG (Application Layer Gateway), based on the communication protocol (eg HTTP / RDP / SIP / SDP / POP / FTP / RTSP), communication partner, content size, streaming conditions Get etc.

  The state of the node on which the application in (4) operates refers to resources such as CPU load, memory usage, and disk access buffer. This device automatically predicts the communication bandwidth required by the application without modifying the application, and dynamically secures the network bandwidth.

  In the data processing apparatus 1 of the present embodiment, the packet transmission / reception means 13 transmits / receives packets to / from the node 2 while securing the network bandwidth in the core network 3 as described above. The buffer amount measuring unit 111 acquires the amount of the packet transmission / reception buffer used by the transmitted / received packet. The bandwidth changing unit 12 changes the network bandwidth in accordance with the acquired use amount of the packet transmission / reception buffer.

  Therefore, the network bandwidth of the core network 3 according to the application traffic can be secured without taking any special measures for the application. The network bandwidth of the core network 3 can be used efficiently, and in the case of a fee structure according to the network bandwidth occupancy, there is an effect of reducing the usage fee.

  The present invention is not limited to the present embodiment, and various modifications are allowed without departing from the scope of the present invention. For example, in the above-described embodiment, the data processing apparatus 1 is illustrated as including independent hardware.

  However, such a data processing device is not an independent device, but can be incorporated as an OS kernel or driver in a device (node) on which an application operates (not shown).

  Furthermore, in the present embodiment, it is exemplified that each unit of the data processing device 1 is logically realized as various functions by a computer program. However, each of these units can be formed as unique hardware, or can be realized as a combination of software and hardware.

  Moreover, although the present Internet was illustrated as a core network in the said form, this may be NGN (Next Generation Network) which is the next generation internet.

  Needless to say, the above-described embodiment and a plurality of modifications can be combined within a range in which the contents do not conflict with each other. Further, in the above-described embodiments and modifications, the structure of each part has been specifically described, but the structure and the like can be changed in various ways within a range that satisfies the present invention.

DESCRIPTION OF SYMBOLS 1 Data processing apparatus 2 Node 3 Core network 11 Traffic prediction means 12 Band change means 13 Packet transmission / reception means 21 Application 22 OS
DESCRIPTION OF SYMBOLS 100 Data processing apparatus 111 Buffer amount measurement means 112 Traffic pattern analysis means 113 Packet content analysis means 114 Node state acquisition means

Claims (10)

A packet transmission / reception means for securing a network bandwidth in the core network and transmitting / receiving packets to / from a node;
A buffer amount measuring means for acquiring a use amount of a packet transmission / reception buffer by the packet to be transmitted / received;
Bandwidth changing means for increasing the network bandwidth when the acquired use amount of the packet transmission / reception buffer is equal to or greater than a predetermined threshold;
A data processing apparatus. It further has a pattern analysis means for analyzing a traffic pattern from the amount of packets transmitted and received,
The data processing apparatus according to claim 1, wherein the bandwidth changing unit changes the network bandwidth in accordance with the analyzed traffic pattern.   The data processing apparatus according to claim 2, wherein the bandwidth changing unit raises the network bandwidth when the bandwidth usage rate of the analyzed traffic is higher than a predetermined value, and lowers the bandwidth when the bandwidth usage is low. Packet content analysis means for analyzing the contents of the packet to be transmitted and received,
The data processing apparatus according to any one of claims 1 to 3, wherein the bandwidth changing unit increases the network bandwidth when the start of a new session is found from an analysis result. The packet content analysis means determines the content size of the new session,
The data processing apparatus according to claim 4, wherein the bandwidth changing unit increases the network bandwidth when the content size is a predetermined value or more. Packet content analysis means for analyzing the contents of the packet to be transmitted and received,
The data processing apparatus according to any one of claims 1 to 5, wherein the bandwidth changing unit lowers the network bandwidth when the end of an existing session is found from an analysis result. A node state obtaining unit for obtaining the state of the node;
7. The bandwidth changing unit according to claim 1, wherein the bandwidth changing unit increases the network bandwidth when the acquired state of the node is higher than a predetermined value and decreases when the load is lower than the predetermined value. Data processing equipment. A core network where network bandwidth is secured,
A node that transmits and receives packets in the reserved network bandwidth;
The data processing device according to any one of claims 1 to 7, wherein the network bandwidth is changed;
A data processing system. Packet transmission / reception processing for securing a network bandwidth in the core network and transmitting / receiving packets to / from a node;
A buffer amount measurement process for obtaining a use amount of a packet transmission / reception buffer by the packet to be transmitted / received;
A bandwidth change process for changing the network bandwidth in response to the acquired use amount of the packet transmission / reception buffer;
Is a computer program that causes a data processing apparatus to execute. Packet transmission / reception operation for securing a network bandwidth in the core network and transmitting / receiving packets to / from a node;
A buffer amount measurement operation for obtaining a use amount of a packet transmission / reception buffer by the packet to be transmitted / received;
A bandwidth changing operation for changing the network bandwidth in response to the acquired use amount of the packet transmission / reception buffer;
A data processing method for a data processing apparatus.

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