WO2006093221A1 - 伝送制御装置およびその方法 - Google Patents
伝送制御装置およびその方法 Download PDFInfo
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- WO2006093221A1 WO2006093221A1 PCT/JP2006/303969 JP2006303969W WO2006093221A1 WO 2006093221 A1 WO2006093221 A1 WO 2006093221A1 JP 2006303969 W JP2006303969 W JP 2006303969W WO 2006093221 A1 WO2006093221 A1 WO 2006093221A1
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- Prior art keywords
- transmission
- policy
- transmission control
- data
- attribute information
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 415
- 238000000034 method Methods 0.000 title claims abstract description 108
- 238000012545 processing Methods 0.000 description 62
- 230000008569 process Effects 0.000 description 37
- 238000010586 diagram Methods 0.000 description 32
- 230000004044 response Effects 0.000 description 27
- 238000004891 communication Methods 0.000 description 18
- 230000008859 change Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 6
- 238000012508 change request Methods 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 101001096355 Homo sapiens Replication factor C subunit 3 Proteins 0.000 description 1
- 102100037855 Replication factor C subunit 3 Human genes 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5691—Access to open networks; Ingress point selection, e.g. ISP selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/20—Traffic policing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/28—Flow control; Congestion control in relation to timing considerations
- H04L47/283—Flow control; Congestion control in relation to timing considerations in response to processing delays, e.g. caused by jitter or round trip time [RTT]
Definitions
- the present invention relates to a transmission control apparatus and method for controlling data transmission of a packet.
- Patent Document 1 discloses a method capable of interpolating or extending the function of a network without changing an existing device or network configuration.
- Patent Document 2 discloses a method of obtaining information from actual packet transfer and performing QoS (Quality of Service) control.
- Patent Document 3 discloses a method for performing QoS control using information of an RTP (Real-time Transport Protocol) packet.
- RTP Real-time Transport Protocol
- Patent Document 4 discloses a method capable of extracting network parameters from transmitted / received packets and setting desired network parameters.
- Patent Document 5 discloses a method capable of recognizing service type classification and traffic type classification and guaranteeing communication quality according to these classifications.
- Non-Patent Document 1 discloses a tag “qos” for QoS control.
- Patent Documents 1 to 5 and Non-Patent Document 1 does not disclose a method capable of controlling transmission from the start of actual data transmission.
- Patent Document 1 JP 2004-180211
- Patent Document 2 JP 2004-135279 A
- Patent Document 3 JP 2003-158543
- Patent Document 4 JP-A-2001-274806
- Patent Document 5 JP 2001-298481 A
- Non-Special Reference 1 Integration of Resource Management and biP, [online], 2002 October, IETF (Internet Engineering Task Force), [December 21, 2004 search], Inter Internet URL: http://www.ietf.org/rfc/rfc3312.txt>
- the present invention has been made from the above-described background, and an object thereof is to provide a transmission control device capable of controlling transmission of actual data transmission start time.
- a transmission control device is a transmission control device that controls transmission of transmission data to be transmitted, and is a transmission request for the transmission data to be transmitted. Attribute information indicating the attribute of this transmission data is transmitted in advance from the original to the transmission request destination. Prior to transmission of this transmission data, the transmission data corresponding to this attribute information is sent in accordance with the notified attribute information.
- a transmission control mode setting unit for setting a transmission control mode for transmitting the transmission data with the required transmission quality, and transmission control of transmission data corresponding to the attribute information according to the set transmission control mode.
- the transmission control method is a transmission control method for controlling transmission of transmission data to be transmitted, from a transmission request source of the transmission data to be transmitted.
- the attribute information indicating the attribute of the transmission data is notified in advance prior to transmission of the transmission data, and the transmission data corresponding to the attribute information is transmitted according to the notified attribute information.
- transmission control can be performed from the start of actual data transmission.
- FIG. 1 is a diagram showing a configuration of a first data transmission system according to a first embodiment of the present invention.
- FIG.2 An example of the hardware configuration of a computer used in each node shown in Fig. 1.
- FIG. 1 An example of the hardware configuration of a computer used in each node shown in Fig. 1.
- FIG. 3 is a diagram showing the configuration of a control program executed on the router shown in FIG. 4) An example of the structure of a packet whose transmission is controlled.
- A shows the structure of the packet, and
- B) shows the structure of the SIP message in the packet shown in (a).
- C) shows the SDP included in the message body in the SIP shown in (b) at the time of request transmission, and (d) shows the SDP at the time of response to the request.
- FIG. 6 is a diagram showing a configuration of a policy DB for storing a policy indicating a transmission quality standard.
- FIG. 6 is a diagram showing a configuration of a management program executed on the policy server shown in FIG.
- FIG. 7 is a diagram showing the configuration of a business program executed on each mobile terminal and business server shown in FIG.
- FIG. 8 is a flowchart showing a transmission control method setting process (S10) of the router shown in FIG.
- FIG. 9 is a first sequence diagram showing an operation (S20) of the first data transmission system shown in FIG.
- FIG. 10] is a second sequence diagram showing an operation (S30) in the case where the policy update of the first data transmission system shown in FIG. 1 is unnecessary.
- FIG. 11 A diagram showing a configuration of a second data transmission system according to the second embodiment of the present invention.
- FIG. 12 is a diagram showing a configuration of a transmission control method setting program executed on the proxy server 26 shown in FIG.
- FIG. 13 is a diagram showing the configuration of a transmission control program executed on the router shown in FIG.
- FIG. 15 is a first sequence diagram showing an operation (S50) of the second data transmission system shown in FIG. 11.
- FIG. 16 is a second sequence diagram showing an operation (S60) in the case where policy update of the second data transmission system shown in FIG. 11 is unnecessary.
- FIG. 17 is a third sequence diagram showing an operation (S62) of the second data transmission system shown in FIG.
- FIG. 18 is a fourth sequence diagram showing an operation (S64) of the second data transmission system shown in FIG.
- FIG. 19 is a flowchart showing a second transmission control method setting process (S66) of the proxy server (transmission control method setting program; FIG. 12) shown in FIG.
- FIG. 20 is a fifth sequence diagram showing an operation (S68) of the second data transmission system 2 shown in FIG.
- FIG. 21 is a sixth sequence diagram showing an operation (S 70) of the second data transmission system 2 shown in FIG. 11.
- FIG. 1 is a diagram showing a configuration of a first data transmission system 1 according to the present invention.
- the first data transmission system 1 includes a norator 20, a policy server 22, a business server 24, a mobile terminal 12— :! to 12—n, a business network 280, and a mobile network 180.
- the policy server 22 and the business server 24 are connected to a business network 280 such as a LAN and a WAN, and the mobile terminals 12-1 to 12_n are connected to the mobile network 180.
- the business network 280 and the mobile network 180 are connected via a router.
- the data transmission system 1 applies policy-based QoS control to transmission data transmitted between each of the mobile terminals 12-1 to 12_n and the business server 24. .
- nodes these servers and the like are collectively referred to as nodes.
- any one of a plurality of components such as the mobile terminal 12— :! to 12-n is indicated without being specified, it may be simply abbreviated as the mobile terminal 12 or the like.
- substantially the same components and processes are denoted by the same reference numerals.
- FIG. 2 is a diagram illustrating a hardware configuration of a computer used in each of the router 20, the policy server 22, the business server 24, and the mobile terminal 12 illustrated in FIG.
- the computer of each node includes a device main body 108 including a CPU 104 and a memory 106, a display 'input device 110 including a keyboard and a display 110, an input network 110, a business network 280, or a mobile network 180 through another node.
- IF communication interface
- the computer of each node has a component part as a computer capable of information processing by executing a program and communication with other nodes via a network.
- FIG. 3 is a diagram showing a configuration of the control program 200 executed on the router 20 shown in FIG.
- the control program 200 includes a user interface (UI) unit 202, a communication-encryption processing unit 204, a receiving unit 206, a transmission control method setting unit 290, a transmission control unit 208, a relay transmission unit 210, and It consists of a policy database (DB) 282 ( Figure 5).
- UI user interface
- DB policy database
- Transmission control method setting section 290 includes transmission control method updating section 292 and setting section 212.
- Transmission control method updating section 292 includes determination section 214 and updating section 216.
- the control program 200 uses these components to make the mobile terminals 12-1 to 12_n respectively.
- a policy indicating a transmission quality standard is updated, and transmission control is performed according to this policy.
- control program 200 performs QoS control according to the policy.
- control program 200 is supplied to the router 20 via the recording medium 116 (FIG. 2), loaded into the memory 106, and operates on the router 20 on the hardware S (not shown). (It is the same for each program below).
- the UI unit 202 accepts a user operation on the display / input device 110 (FIG. 2) and outputs it to each component of the control program 200.
- control program 200 controls the operation of each component of the control program 200 according to the accepted operation.
- the UI unit 202 displays the information-data created by each component of the control program 200 and the processing contents of each component on the display 'input device 110 or stores it in the storage device 114. .
- the communication / encryption processing unit 204 performs communication processing necessary for communication with each node, authentication processing with these nodes, and information transmitted between them. Performs encryption processing to prevent tampering.
- the receiving unit 206 transmits the transmission data from the mobile terminal 12 or the business server 24 (business program 240; described later with reference to FIG. 7) prior to transmission of the transmission data, and shows attribute information (FIG. 4 ( A packet including a) to (d) is received and output to the transmission control method setting unit 290.
- FIG. 4 is a diagram illustrating a packet structure for setting transmission control by the control program 200.
- (a) shows the packet structure
- (b) shows the packet structure shown in (a).
- the structure of the SIP (Session Initiation Protocol) message in the packet is shown.
- (C) shows the Session Description Protocol (SDP) contained in the message body in the SIP shown in (b) at the time of request transmission.
- (D) shows SDP at the time of response to the request.
- SIP Session Initiation Protocol
- this packet contains an IP header, TCP or UDP header (of course, other transport layer protocols such as SCTP may be used), SIP messages, etc. Any part is included. Messages including SIP messages are transmitted and received by these nodes prior to transmission of transmission data between any of the mobile terminals 12 and the business server 24.
- the SIP message shown in FIG. 4 (a) includes a start line, a header, and a message body.
- the message body includes information described by the SDP defined in RFC3261, and the SDP includes attribute information.
- the message body shown in FIG. 4 (b) includes an SDP.
- SDP defines attribute information such as session description, date / time description, and media description.
- V indicates the protocol version.
- o indicates the owner or creator and the session identifier.
- the owner is “alice” and the domain is “host. anywhere. com”.
- connection information for example, that the domain is “host. anywhere. com” in the IP4 layer.
- t indicates the start time and end time of the session. If 0 is specified as the time, this indicates that the time is not specified or the session is permanent.
- m indicates the media name, transport address, etc. For example, the media name and transport address are “audio” and “49170”, “video” and “51372”, and “video” and “53000”, respectively. It is shown that three connections are required.
- a indicates zero or more media attribute lines. For example, one attribute is indicated for each of the three media indicated by the m type.
- the SDP shown in FIG. 4 (c) is transmitted from the mobile terminal 12 to the business server 24 prior to transmission of the transmission data.
- the user “alice” force S, voice data, and two images are transmitted. Indicates that transmission of image data is requested.
- the user “alice” power S the connection for transmitting / receiving audio data, the connection for transmitting / receiving the first video data, and the connection for transmitting / receiving the second video data are used. It is shown that it requires 3 connections for the nexus.
- the SDP shown in Fig. 4 (d) is the SDP in response to the SDP shown in Fig. 4 (c), and is described in the same way as the SDP shown in Fig. 4 (c). Sent to mobile terminal 12.
- the o type indicates that the owner is “bob” and the domain is “host.example.com”, and the c type indicates that the domain is in the IP4 layer. “H ost. Example. Com”; 0 is displayed.
- the media name and transport address are allowed to be three connections, "audio” and "49920", “video” and “0”, and “video” and “53000”, respectively. It will be shown to be done.
- this SDP indicates that transmission / reception of the first video data is denied.
- the transmission data following the transmission / reception of these SDPs does not include the first video data, but includes the audio data and the second video data.
- Transmission control method setting section 290 converts this transmission data with the transmission quality required for the transmission data corresponding to this attribute information according to the attribute information contained in the received packet.
- a transmission control method for transmission that is, a transmission control mode (policy stored in the policy DB 282; referred to as “transmission control method” throughout the present application) is set.
- the transmission control method setting unit 290 for example, when a policy that specifies that “the number of connections between the mobile terminal 12 and the business server 24 is 2 at the maximum” is set in FIG. ) Receive the packet containing the attribute information indicated by
- the transmission control method setting unit 290 sets the policy so that the maximum number of connections that can be used is at least three for the audio data connection and the two video data connections. To do.
- FIG. 5 is a diagram showing a configuration of the policy DB 282 that stores a policy indicating a transmission quality standard. As shown in FIG. 5, the policy DB 282 includes a policy identifier (ID) and policy contents.
- ID policy identifier
- the policy DB 282 stores at least a part of data stored in the policy DB 286 used by the management program 220 (described later with reference to FIG. 6) on the policy server 22.
- the policy DB 282 is a subset of the policy DB 286 on the policy server 22.
- the policy ID is an identifier for managing the policy to be set, and the policy is uniquely identified by this policy ID.
- the policy indicates a transmission quality standard, and data transmission is controlled based on a policy including, for example, a bandwidth, the number of connections, and a delay time.
- the first policy indicates that the maximum bandwidth is 64 kbps for data transmission from the mobile terminal 12 to the business server 24, and the second policy is from the business server 24 to the mobile terminal 12. This indicates that the maximum bandwidth for data transmission is 2Mbps.
- the policy DB 282 stores these policies in the storage device 114 (FIG. 2) or the memory 106 of the router 20 in which the control program 200 operates.
- policies with policy IDs 0001 to 0005 shown in FIG. 5 are a set of policies for a specific session, and another set of policies is prepared for another session.
- the session is an initial (default) policy. It is set so as to refer to the set.
- the transmission control method updating unit 292 (FIG. 3) transmits the transmission data with the transmission quality required for the transmission data corresponding to the attribute information. Update the transmission control method (policy) so that it is transmitted.
- the determination unit 214 refers to the attribute information included in the packet output from the reception unit 206, and transmits the transmission data with the required transmission quality based on all the policies corresponding to the session stored in the policy DB 282. Determines whether or not can be transmitted.
- determining unit 214 determines that the transmission data is transmitted with the required transmission quality even with the current policy setting, it transmits the packet including the received attribute information to relay transmitting unit 210. The packet is output and transmitted to the transmission request destination.
- the determination unit 214 requests the update unit 216 to update the policy except when determining that the transmission data is transmitted with the required transmission quality.
- the transmission source when a packet including the attribute information shown in FIG. 4 (c) is received, the transmission source includes two connections for audio data and video data in this packet. A total of three connections are shown requesting three connections.
- the policy ID 0003 of the policy DB 282 shown in FIG. A policy is established that specifies that the maximum number of connections with the service server 24 is 2 ”.
- the determination unit 214 determines that transmission data cannot be transmitted with the required transmission quality.
- the updating unit 216 uses the transmission quality required for the transmission data, except when the determination unit 214 determines that the transmission data can be transmitted with the required transmission quality.
- the policy stored in the policy DB 282 is updated so that is transmitted. Specifically, the update unit 216 requests the policy server 22 (described later with reference to FIG. 6) to update the policy.
- This update request is, for example, 1? 3_? 1 (010111011 Open Policy service Usage for Policy Provisioning) can be registered.
- the number of connections required is 3, and the maximum number of connections set as a policy is 2. Therefore, the updating unit 216 uses the policy server. 22 is requested to expand the maximum number of connections.
- the setting unit 212 receives the policy updated by the policy server 22 and sets the received policy in the policy DB 282.
- the relay transmission unit 210 relays and transmits a packet including attribute information to the transmission request destination when the determination unit 214 determines that transmission data can be transmitted with the required transmission quality. .
- the relay transmission unit 210 relays and transmits the packet.
- the relay transmission unit 2 If the data transmission cannot be performed with the contents described in the SDP even after the update unit 216 requests the policy server 22 to update the policy, the relay transmission unit 2
- the packet including the SDP may be transmitted to the request destination as it is.
- the transmission request destination cannot satisfy all the requests in the SDP, but it may return the allocation of resources requested within the allowable range to the request source.
- the SDP in Fig. 4 (d) shows that only two connections were allocated for the requested number of connections 3, and the remaining one (media name video, transport address 51372) could not be allocated. Yes.
- the requester determines from the assignment result whether the data transmission required cannot be performed and the data transmission should be terminated, or whether the data transmission should be continued even if insufficient. be able to.
- the transmission control unit 208 performs transmission control of transmission data corresponding to the attribute information in accordance with the policy set in the policy DB 282.
- the transmission control unit 208 transmits a packet including audio data, video data, etc. transmitted between the mobile terminal 12 and the business server 24 following transmission of the packet including attribute information. Received from the communication / encryption processing unit 204, the transmission of this packet is controlled according to the policy.
- the transmission control unit 208 controls the packet transmission timing so that the maximum bandwidth is 64 kbps.
- the bandwidth is controlled so that it becomes a maximum of 2 Mbps.
- the transmission control unit 208 functions as a policy enforcement point (PEP).
- PEP policy enforcement point
- FIG. 6 is a diagram showing a configuration of the management program 220 executed on the policy server 22 shown in FIG.
- the management program 220 includes a user interface (UI) unit 202, a communication “encryption processing unit 204, a management unit 222, a transmission unit 224, and a policy DB 286.
- the management program 220 manages the policy using these components, and makes a judgment on the policy update request transmitted from the control program 200 (FIG. 3).
- the management program 220 functions as a policy decision point (PDP).
- PDP policy decision point
- the policy DB 286 stores all policies indicating transmission quality standards.
- the policy DB 286 is implemented by storing these policies in the storage device 114 or the memory 106 of the policy server 22 in which the management program 220 operates.
- the management unit 222 manages the policy stored in the policy DB 286, receives a policy update request from the router 20 (control program 200), and determines whether to update the policy in response to the request.
- the management unit 222 Decide whether or not to update the policy.
- the management unit 222 updates the number of connections for a predetermined time, for example, with a time limit so as to satisfy the request, or updates to a value that does not satisfy the request because there is no room for expansion. Or, determine whether to update.
- the management unit 222 updates the policy DB 286, and causes the transmission unit 224 to transmit the updated policy to the transmission source (norator 20) of the policy update request. .
- the management unit 222 transmits the updated policy to the transmission source of the policy update request, that is, the router 20 via the transmission unit 224.
- FIG. 7 is a diagram showing a configuration of the business program 240 executed on each of the mobile terminals 12— :! to 12-n and the business server 24 shown in FIG.
- the business program 240 includes a UI unit 202, a communication “encryption processing unit 204, a business processing unit 242, and an attribute information notification unit 244.
- the business program 240 uses these components to store data associated with business such as online games, online purchasing, or business support between one of the mobile terminals 12-1 to 12_n and the business server 24. Prior to transmission of this transmission data, the attribute information of the transmitted data is notified.
- the business processing unit 242 performs business processing by receiving input from the display / input device 110 (FIG. 2) and causing the display / input device 110 to output video and audio.
- the business processing unit 242 is transmitted to the attribute information notification unit 244 prior to business processing. Notify the attribute information of the data to be recorded.
- the attribute information notification unit 244 notifies the transmission request destination in advance of attribute information (FIG. 4 (c)) indicating the attribute of the transmission data to be transmitted in the business process.
- the communication / encryption processing unit 204 transmits the transmission data notified of this attribute information under the control of the business processing unit 242.
- attribute information notification unit 244 since the attribute information is notified by the attribute information notification unit 244, data transmission in this business process can be performed after transmission control is performed according to the attribute information.
- FIG. 8 is a flowchart showing the transmission control method setting process (S10) of the router 20 (control program 200; FIG. 3) shown in FIG.
- step 100 the reception B206 receives a packet including attribute information transmitted prior to data transmission between the mobile terminal 12 and the business server 24. And output to the determination unit 214 of the transmission control method setting unit 290.
- step 102 the determination unit 214 refers to the SDP included in the packet and analyzes the attribute information of the transmission data.
- step 104 the determination unit 214 determines whether or not the packet can be analyzed, that is, whether or not attribute information that can be analyzed is included in the packet.
- control program 200 proceeds to the process of S106, and if the packet cannot be analyzed, the process proceeds to the process of S108.
- step 106 the determination unit 214 refers to the policy stored in the policy DB 282 to determine whether or not the transmission data is transmitted with the required transmission quality.
- control program 200 proceeds to the processing of S108, and when the transmission data is not transmitted with the required transmission quality, the processing proceeds to the processing of S110.
- step 108 the determination unit 214 transmits the packet to the relay transmission unit 210, and the relay transmission unit 210 relays the packet to the transmission request destination and transmits the packet to the control program 200. Ends the process.
- step 110 the determination unit 214 requests the update unit 216 to update the policy.
- the updating unit 216 When receiving the request, the updating unit 216 requests the policy server 22 to update the policy so that the transmission data is transmitted with the required transmission quality.
- the policy DB 282 in the router 20 may contain a policy that specifies the requested transmission quality and is not correct.
- policies include the following policies.
- the router 20 requests the corresponding policy from the policy server 22.
- step 112 the determination unit 214 determines whether or not the policy has been changed by the policy server 22 to satisfy the request.
- the setting unit 212 receives the updated policy, sets the policy in the policy DB 282, and proceeds to the processing of S108 until the control program 2000.
- control program 200 proceeds to S114.
- step 114 the determination unit 214 causes the relay transmission unit 210 to force or discard the packet without transmitting the packet, and ends the data transmission.
- the control program 200 can set a policy so that transmission data is transmitted with the required transmission quality prior to transmission of transmission data.
- FIG. 9 is a first sequence diagram showing an operation (S20) of the first data transmission system 1 shown in FIG.
- step 200 the user who performs business processing moves
- the terminal 12 is used to request the business server 24, which is the business service provider, to start business processing.
- the mobile terminal 12 transmits a packet including an INVITE request in SIP with the transmission request destination as the business server 24.
- the router 20 Since the router 20 is arranged between the mobile terminal 12 and the business server 24, the router 20 receives this packet. At this time, since the SDP described above is included in the packet transmitted from the mobile terminal 12, the router 30 is necessary at this stage to determine whether or not to make a policy change request in order to start the relevant business process. Get information.
- step 202 the norator 20 transmits this packet to the business server 24 that is the transmission request destination.
- the business server 24 receives the relayed packet.
- step 204 the business server 24 transmits a notification response (for example, a response code “183” in SIP) to the mobile terminal 12, and the packet including this notification response is relayed by the router 20 and moved. Received by terminal 12.
- a notification response for example, a response code “183” in SIP
- step 206 the mobile terminal 12 transmits a packet including PRACK (RFC3 262), which is a receipt confirmation, with the transmission request destination as the business server 24, and the router 20 receives this packet.
- PRACK RRC3 262
- step 208 the norator 20 performs transmission control method setting processing (FIG. 8; S10), and determines that the policy needs to be updated. Request an update.
- step 208 is There is no need to wait for step 206 to arrive.
- this may be initiated when a notification response is received at step 204, or alternatively at step 200.
- a notification response is received at step 204, or alternatively at step 200.
- more information can be referred to at the time of the determination at a later point in time, when implementing the system, where should the determination and update request be made based on various requests and constraints on the system? Should be decided.
- step 210 the policy server 22 determines whether or not to update the policy so as to satisfy the transmission quality, and transmits the updated policy to the router 20 in step 212 (S212). As a reminder, the norator 20 stores the transmitted policy in the policy DB 282.
- Router 20 specifies a policy that states that “the maximum number of connections between a mobile terminal and a business server is 2”, and that “a maximum number of connections between a mobile terminal and a business server is 5”. Update to the policy you want.
- the norator 20 transmits a completion notification indicating that the updated policy has been stored to the policy server 22.
- step 214 the policy server 22 transmits a completion notification to the router 20 indicating that the processing for the policy update request has been completed.
- step 216 in response to the processing of the router 20 or S206, the mobile terminal 12 receives the received packet containing the receipt confirmation from the business server 24 that is the transmission request destination of this packet. Send to.
- step 218 the business server 24 transmits a packet including a success response to the mobile terminal 12.
- the business server 24 transmits a success response to the PRACK (response code “2 ⁇ (200 range))” and a success response to the INVITE.
- step 220 transmission data is transmitted between the mobile terminal 12 and the business server 24 via the router 20, and the rear that performs business processing with the requested transmission quality. Le-time communication is made.
- the user can receive a business service including audio and video from the business server 24 at a predetermined transmission quality from the start of real-time communication.
- FIG. 10 shows the case where the policy update of the first data transmission system 1 shown in FIG. 1 is not required. It is a sequence diagram which shows operation
- step 206 a packet including an acknowledgment of reception of the mobile power from the norator 20 and the mobile terminal 12 was received, and the transmission control method setting process (FIG. 8; S10) was performed.
- the processing from S208 to S214 (Fig. 9; S20) is not performed.
- the transmission data can be transmitted with the required transmission quality from the transmission data transmission start time.
- attribute information included in the packet is used for QoS control, a special tag different from attribute information is not required for QoS control.
- the QoS control is performed even if the data transmission is completed in a short time as well as when the data transmission is continued for a long time. This can be done effectively from the beginning of data transmission.
- the attribute information is transmitted prior to the data transmission. Transmission can be done on each connection.
- FIG. 11 is a diagram showing a configuration of the second data transmission system 2 according to the present invention.
- the second data transmission system 2 includes a router 30 (transmission control means), a policy server 22, a business server 24, a proxy server 26 (transmission control method setting means), and a mobile terminal 12.
- — 1 ⁇ : 12_n is connected and configured.
- Policy server 22 and business server 24 are used for business networks such as LAN and WAN 2
- the proxy server 26 is directly connected to the router 30 via the router 30.
- the proxy server 26 may not be directly connected to the router 30 but may be connected to the business network 280, or may be connected to a network (not shown) on the mobile network 180 side with respect to the router 30.
- the router 20 functions as a transmission control unit and a transmission control mode setting unit
- the router 30 functions as a transmission control unit
- the proxy server 26 functions as a transmission control mode setting unit
- the router 20 receives and relays a packet including attribute information as a transmission control mode setting unit.
- the proxy server 26 Captures packets that contain information and transmits them transparently.
- FIG. 12 is a diagram showing the configuration of the transmission control method setting program 260 executed on the proxy server 26 shown in FIG.
- the transmission control method setting program 260 includes a UI unit 202, a communication 'encryption processing unit 204, a transmission control method update unit 294, a setting unit 212, a transparent transmission unit 264, and a policy DB 284.
- the control method update unit 294 includes a capturing unit 262, a determination unit 214, and an update unit 216.
- the transmission control method setting program 260 uses these components to make the mobile terminal 12_1 ⁇
- the transmission data is transmitted with the transmission quality required for the transmission data corresponding to the attribute information.
- Transmission control method for transmission (based on transmission quality Policy).
- the policy DB 284 stores at least a part of the data stored in the policy DB 286 used by the management program 220 on the policy server 22.
- the policy DB 284 is a subset of the policy DB 286 on the policy server 22.
- the capturing unit 262 captures a packet including attribute information transmitted from the mobile terminal 12 or the business server 24 via the business network 280 prior to transmission of transmission data, and transmits the packet to the determination unit 214.
- the transparent transmission unit 264 transparently transmits a packet including attribute information to the transmission request destination when the determination unit 214 determines that transmission data can be transmitted with the required transmission quality.
- the transparent transmission unit 264 relays the packet without changing it.
- the transparent transmission unit 264 transmits this packet. Instead of transmitting transparently, the packet is returned to the source as an error or discarded.
- this packet is transmitted to the request destination, the requested resource is allocated within the allowable range, and the result is returned to the request source to the request source. It is also possible to take measures such as making subsequent decisions.
- FIG. 13 is a diagram showing a configuration of the transmission control program 300 executed on the router 30 shown in FIG.
- the transmission control program 300 includes a UI unit 202, a communication “encryption processing unit 2004, a transmission control unit 208, a setting unit 212, and a policy DB 282.
- the transmission control program 300 corresponds to the attribute information in accordance with the set policy, and the transmission data transmitted / received between each of the mobile terminals 12-1 to 12_n and the business server 24 is transmitted. Perform transmission control.
- Policy DB282 is based on the transmission control method setting program 260 on the proxy server 26. Store at least a part of the data stored in the policy DB284. That is, the policy DB 284 is a subset of the policy DB 284 on the proxy server 26.
- FIG. 14 is a flowchart showing a first transmission control method setting process (S40) of the proxy server 26 (transmission control method setting program 260; FIG. 12) shown in FIG.
- step 400 the acquisition B262 is attribute information transmitted via the business network 280 prior to data transmission between the mobile terminal 12 and the business server 24. Is output to the determination unit 214.
- step 402 the determination unit 214 outputs the packet to the transparent transmission unit 264.
- the transparent transmission unit 264 transmits the packet transparently to the transmission request destination, and the transmission control method setting program 260 Ends the process.
- FIG. 15 is a first sequence diagram showing an operation (S50) of the second data transmission system 2 shown in FIG.
- step 500 a user who performs business processing uses the mobile terminal 12 to request the business server 24, which is the business service provider, to start business processing. To do.
- the mobile terminal 12 transmits a packet including an INVITE request in SIP with the transmission request destination as the business server 24.
- the proxy server 26 uses the router 30 to capture, that is, tap, a packet that is transmitted via the business network 280 and includes the INVITE request.
- the router 30 does not affect the original transmission of such a packet, but creates a duplicate of the packet and gives it to the proxy server 26 to perform the following analysis.
- proxy operation instead of the parallel operation to “divide” the packet as described above, the packet is temporarily detoured and necessary analysis (in some cases, modification of the packet contents, etc.) is performed. It is also possible to return to the original route after going. In the present application, such serial operation is also called capture.
- step 204 the business server 24 transmits a notification response to the mobile terminal 12, and a packet including this notification response is relayed by the router 20 and received by the mobile terminal 12.
- step 506 the mobile terminal 12 transmits a packet including a PRACK code that is a receipt confirmation as the transmission request destination as the business server 24, and the proxy server 26 receives this packet.
- the proxy server 26 executes the processing from S508 onward when the packet including the PRACK code is received.
- Step 508 the proxy server 26 performs transmission control method setting processing (see FIG.
- step 510 the policy server 22 determines whether or not to update the policy so that the transmission quality can be satisfied, and transmits the updated policy to the proxy server 26.
- step 512 the proxy server 26 stores the updated updated policy in the policy DB 284.
- the proxy server 26 transmits the updated policy to the router 30.
- step 514 the norator 30 sets the transmitted updated policy in the policy DB 282.
- the norator 30 sends a completion notification indicating that the updated policy has been stored to the proxy server 26.
- the proxy server 26 transmits a completion notification that the policies of the proxy server 26 and the router 30 have been updated to the policy server 22 in step 518 (S518).
- the policy server 22 transmits a completion notification to the proxy server 26 indicating that the processing for the policy update request has been completed.
- processing from S508 to S518 is performed between the proxy server 26, the router 30, and the policy server 22 using, for example, COPS-PR.
- the policy server 22 may transmit the updated policy directly to the router 30 without going through the proxy server 26.
- the policy server 22 also transmits the updated policy to the proxy server 26.
- Step 520 Select the proxy server 26f or S506, and check that the packet containing the acknowledgment sent from the mobile terminal 12 is sent to the business server that is the transmission request destination for this packet. Sent to 24.
- step 218 the business server 24 transmits a packet including a success response to the mobile terminal 12.
- step 220 transmission data is transmitted between the mobile terminal 12 and the business server 24, and real-time communication is performed to perform business processing with the requested transmission quality.
- the information necessary for such a determination and request has already been acquired at the stage of S502, which captures the packet of the start request S500. Considering the conditions required for the system and given as constraints, it can be started at an appropriate time such as S502, S204, S506.
- FIG. 16 shows the operation when the policy update of the second data transmission system 2 shown in FIG. 11 is not required.
- FIG. 10 is a second sequence diagram showing (S60).
- a router specially designed for the present invention is not required, and a normal QoS is used as a router.
- a router capable of controlling can be used.
- the present invention can be implemented only by adding the proxy server as described above to such a configuration.
- the router When providing the present invention to an existing network where the router is not only more expensive than the proxy server, in a configuration that requires a special router, the traffic that needs to pass through the router for a certain period of time must be passed.
- the power of disconnecting everything In the second embodiment, if the router is the type of router currently in general use, it is only necessary to change the setting at most, so the influence on the network when applying the present invention is kept to a minimum. It has the effect of being able to
- FIGS. 17 and 18 are third and fourth sequence diagrams showing the operation (S62, S64) of the second data transmission system 2 shown in FIG.
- FIG. 15 and FIG. 16 show the case where the proxy server 26 starts the transmission control method setting process when receiving the receipt notification from the mobile terminal 12 in the second data transmission system 2. 17 and 18, the operation of the proxy server 26 It is also possible to change the transmission control method setting process to start when a notification response relayed from 0 is received.
- each node of the data transmission system 2 performs the processing of S500 to S204 shown in FIG.
- Step 620 In response to the notification response obtained by the processing of S204, the proxy server 26 until the proxy server 26 (on the other hand, the proxy server 26 receives the relayed notification response, With this as an opportunity, the processing of S508 to S520 is executed.
- the business server 24 transmits a packet including a success response to the mobile terminal 12, and transmits transmission data between the mobile terminal 12 and the business server 24. Is done.
- the policy may not be updated. If it is determined that the necessary QoS can be secured, the processing of S508 to S518 (FIGS. 15 and 17) is not performed as in the case of the operation shown in FIG.
- FIG. 19 is a flowchart showing a second transmission control method setting process (S66) of the proxy server 26 (transmission control method setting program 260; FIG. 12) shown in FIG.
- the settings for the respective components of the transmission control method setting program 260 and their operations are also changed as appropriate as compared with the processing of S40.
- step 660 the determination unit 214 gives the highest priority to the protection of the data transmission system 2. In response to the setting of power, it will be judged whether or not.
- the proxy server 26 proceeds to the process of S670, and otherwise proceeds to the process of S662.
- step 662 when the policy server 22 returns an alternative policy that is not the requested policy and can replace the requested policy, and the service requested by the alternative policy can be provided.
- the transmission control method setting program 260 proceeds to the process of S664, and otherwise proceeds to the process of S666.
- step 664 the update unit 216 sets an alternative policy in the policy DB 264 and controls the router 30 to transmit a packet in accordance with the alternative policy.
- step 666 The decision unit 214 is set so that the policy can be changed within a predetermined range as needed even if the policy is not obtained from the policy server 22, and whether the service can be provided with the policy within the allowable range. Judging.
- the transmission control method setting program 260 proceeds to the process of S668 when the policy can be changed, and proceeds to the process of S114 otherwise.
- the decision unit 214 changes the policy within the permitted range, and this is done. If QoS is ensured, the determination in S106 is successful, and the process proceeds to S402.
- step 668 sets the policy DB 264 using the policy within the allowable range, and further controls the router 30 to transmit the packet according to the policy within the allowable range.
- the policy change request S is sent from the proxy server 26 to the policy server 22 in the process of S508 similarly to the processes of S50 and S62 shown in FIGS.
- the proxy server 26 receives this policy in step 682 (S682).
- the proxy server 26 updates the policy D B 264 with the alternative policy, and further transmits the alternative policy to the router 30.
- FIG. 21 FIG. 15, FIG. 17, FIG. 20 (the processing of S50, S62, and S68 shown in the same manner (the same as above, the processing of S508 is the same as the proxy).
- a policy change request is sent from the server 26 to the policy server 22.
- step 700 the policy server 22 returns that the policy cannot be updated to the proxy server 26.
- step 702 if the proxy server 26 is allowed to change the policy within the predetermined range, the proxy DB 26 uses the policy most suitable for providing the service within the allowable range. Then, this policy is sent to the router 30.
- the present invention can be used for quality control of policy-based services in a communication system.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Multimedia (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2007505998A JPWO2006093221A1 (ja) | 2005-03-04 | 2006-03-02 | 伝送制御装置およびその方法 |
US11/817,583 US20090067419A1 (en) | 2005-03-04 | 2006-03-02 | Transmission control apparatus and method |
EP06715078A EP1855426A4 (en) | 2005-03-04 | 2006-03-02 | TRANSMISSION CONTROL APPARATUS AND CORRESPONDING METHOD |
Applications Claiming Priority (4)
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JP2005-060063 | 2005-03-04 | ||
JP2005060063 | 2005-03-04 | ||
JP2005-060062 | 2005-03-04 | ||
JP2005060062 | 2005-03-04 |
Publications (1)
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WO2006093221A1 true WO2006093221A1 (ja) | 2006-09-08 |
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ID=36941250
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PCT/JP2006/303969 WO2006093221A1 (ja) | 2005-03-04 | 2006-03-02 | 伝送制御装置およびその方法 |
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Country | Link |
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US (1) | US20090067419A1 (ja) |
EP (1) | EP1855426A4 (ja) |
JP (1) | JPWO2006093221A1 (ja) |
KR (1) | KR20070116806A (ja) |
WO (1) | WO2006093221A1 (ja) |
Cited By (2)
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JP2009044737A (ja) * | 2007-08-08 | 2009-02-26 | Samsung Electronics Co Ltd | 無線通信システムにおける基地局の動作方法及びその装置 |
JP2009267525A (ja) * | 2008-04-22 | 2009-11-12 | Ntt Docomo Inc | 伝送装置、管理装置、方法及び通信システム |
Families Citing this family (8)
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US7356539B2 (en) * | 2005-04-04 | 2008-04-08 | Research In Motion Limited | Policy proxy |
JP2008234382A (ja) * | 2007-03-22 | 2008-10-02 | Fujifilm Corp | 医用画像転送制御装置及び方法、並びに医用画像転送システム |
FR2921531B1 (fr) * | 2007-09-20 | 2011-08-26 | Alcatel Lucent | Dispositif de traitement adaptatif de notifications apllicatives destinees a des terminaux de communication connectes a une infrastructure de transmission |
CN103081153A (zh) | 2010-08-24 | 2013-05-01 | E·I·内穆尔杜邦公司 | 光敏组合物和用所述组合物制得的电子装置 |
US9372733B2 (en) * | 2011-08-30 | 2016-06-21 | Open Text S.A. | System and method for a distribution manager |
US20130066943A1 (en) * | 2011-09-13 | 2013-03-14 | International Business Machines Corporation | Application-Aware Quality Of Service In Network Applications |
KR101316903B1 (ko) * | 2012-09-19 | 2013-10-11 | 주식회사 시큐아이 | 고가용성 시스템에서 세션을 동기화하기 위한 방법 및 장치 |
US10165571B2 (en) * | 2013-09-11 | 2018-12-25 | Freebit Co., Ltd. | Application state change notification program and method therefor |
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JP2003158543A (ja) * | 2001-11-22 | 2003-05-30 | Anritsu Corp | 中継装置及び中継方法 |
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- 2006-03-02 KR KR1020077020111A patent/KR20070116806A/ko not_active Application Discontinuation
- 2006-03-02 WO PCT/JP2006/303969 patent/WO2006093221A1/ja active Application Filing
- 2006-03-02 US US11/817,583 patent/US20090067419A1/en not_active Abandoned
- 2006-03-02 EP EP06715078A patent/EP1855426A4/en not_active Withdrawn
- 2006-03-02 JP JP2007505998A patent/JPWO2006093221A1/ja not_active Withdrawn
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JP2003158543A (ja) * | 2001-11-22 | 2003-05-30 | Anritsu Corp | 中継装置及び中継方法 |
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Cited By (3)
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JP2009044737A (ja) * | 2007-08-08 | 2009-02-26 | Samsung Electronics Co Ltd | 無線通信システムにおける基地局の動作方法及びその装置 |
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JP2009267525A (ja) * | 2008-04-22 | 2009-11-12 | Ntt Docomo Inc | 伝送装置、管理装置、方法及び通信システム |
Also Published As
Publication number | Publication date |
---|---|
EP1855426A1 (en) | 2007-11-14 |
JPWO2006093221A1 (ja) | 2008-08-07 |
KR20070116806A (ko) | 2007-12-11 |
EP1855426A4 (en) | 2012-02-15 |
US20090067419A1 (en) | 2009-03-12 |
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