CN102413514B - Data distribution device and data distribution system - Google Patents
Data distribution device and data distribution system Download PDFInfo
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- CN102413514B CN102413514B CN201010292871.7A CN201010292871A CN102413514B CN 102413514 B CN102413514 B CN 102413514B CN 201010292871 A CN201010292871 A CN 201010292871A CN 102413514 B CN102413514 B CN 102413514B
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Abstract
The invention discloses a communication terminal, a server and a data distribution system. The data distribution system is provided with a data distribution server for providing data, a terminal which can be connected with multiple networks and can request to distribute data, and a communication information management server for managing the utilization conditions of the communication in each network, wherein the terminal collects the traffic information in each network from the communication information management server, divides the data of a distribution object into data blocks so that the communication utilization quantity becomes uniform, and requests for divided distribution of the data from the data distribution server. The data distribution server judges whether the data block requested by the terminal can be distributed within the limit communication time regulated by the system, and tries to shorten the data sending time by compression when the time required for sending the data blocks in a network exceeds the limit communication time. The data block is divided again when the time required for sending the data blocks exceeds the limit communication time after the data compression.
Description
Technical field
The present invention relates to the improvement to the system of user's allocation data via network.
Background technology
Along with the access network technologies taking Fiber To The Home (FTTH), various wireless communication technology as representative is more and more flourishing, the network bandwidth that user can utilize increases gradually, and means of communication also trends towards variation gradually.The variation of means of communication makes user use multiple communication paths simultaneously so that communication high speed becomes possibility, downloads the technology of required time thereby for example proposed to send data shortening data by multiple communication layers simultaneously.For example, in No. 07-212487, prior art Japanese kokai publication hei, disclose Data Segmentation has been become to multiple of equal-sized, and sent data simultaneously and realize the technology of high speed communication by multiple communication layers.In addition,, in TOHKEMY 2000-122938 communique, disclose and in the time of partition data, implemented the non-homogeneous technology of cutting apart that the disposal ability of terminal is taken into account.
Patent documentation 1: No. 07-212487, Japanese kokai publication hei
Patent documentation 2: No. 2000-122938, TOHKEMY
In above-mentioned prior art, because user does not consider to utilize the environment of multiple Internet resources simultaneously, therefore the utilization rate of network may be contrary with user's intention.Especially in radio communication, because the communication resource is easily exhausted, therefore adopt set the method for the higher limit of the traffic to user more, but in above-mentioned prior art, do not consider the behaviour in service of network, so the danger that exists the traffic of for example particular network exceedingly to be consumed.In addition, about the utilization of Internet resources, not only user's requirement is very important, and actual network utilisation situation is also very important.For example, according to the disclosed technology of patent documentation 1, data after Data Segmentation being become to impartial size and these are cut apart send via heterogeneous networks, sometimes according to the difference of utilizing situation of network, the needed time of communicating by letter can occur not permissible poor.In addition, requiring in most situation of user's requirement and network provider is contrary, user tends to require the shortizationest of call duration time strongly, and network provider's attention is to make resource utilization smoothing, avoid congestion, in above-mentioned prior art, do not provide the method regulating in the case of such difference requirement clashes.
Summary of the invention
In the present invention, user collects the information relevant with the traffic of the all-network that can utilize by terminal, data are cut apart so that the traffic smoothing of each network, and to the dispensing of cutting apart of data distribution server request data.Data distribution server monitors the situation of utilizing of each network, the limit size of the data volume that calculating can be provided and delivered.As carried out the result after Data Segmentation according to user's request, in certain network, when the size of the data block after cutting apart has exceeded the limit size that can provide and deliver, data distribution server carries out cutting apart again of data according to the situation of utilizing of network, and to user notification result.
A mode of the present invention is a kind of communication terminal, is connected with external device (ED) via multiple networks, has: network interface, communicates by above-mentioned network; And control part, according to the accumulative total traffic that represents the traffic having used separately of above-mentioned multiple networks with represent the poor of peak volume that above-mentioned multiple networks allowed separately, calculate the residue traffic that above-mentioned multiple network can utilize separately, above-mentioned control part is according to the recently partition data piece of the above-mentioned residue traffic, and generated data is cut apart and is sent request, this Data Segmentation sends request the data block after instruction sends this and cuts apart to each network of correspondence, and above-mentioned network interface sends above-mentioned Data Segmentation to above-mentioned external device (ED) and sends request.
Another mode of the present invention is a kind of communication terminal, is connected with external device (ED) via multiple networks, comprising: network interface, communicates by above-mentioned network; And control part, be used for controlling this network interface, above-mentioned control part detects garble in the transmission from said external device, detect the network of communication delay minimum in above-mentioned multiple network, generated data sends request again, and these data send request instruction again and again send data by the network of this communication delay minimum.
Another mode of the present invention is the data communications method in a kind of communication terminal, this communication terminal is connected with external device (ED) via multiple networks, above-mentioned communication terminal has the network interface communicating by above-mentioned network and controls the control part of this network interface, described control part is controlled as follows: according to the accumulative total traffic that represents the traffic having used separately of above-mentioned multiple networks with represent the poor of peak volume that above-mentioned multiple networks allowed separately, calculate the residue traffic that above-mentioned multiple network can utilize separately, according to the recently partition data piece of the above-mentioned residue traffic, generated data is cut apart and is sent request, this Data Segmentation sends request the data block after instruction sends this and cuts apart to each network of correspondence, sending above-mentioned Data Segmentation to above-mentioned external device (ED) sends request.
Another mode of the present invention is the data communications method in a kind of communication terminal, this communication terminal is connected with external device (ED) via multiple networks, above-mentioned communication terminal has the network interface communicating by above-mentioned network and controls the control part of this network interface, above-mentioned control part detects garble in the transmission from said external device, detect the network of communication delay minimum in above-mentioned multiple network, generated data sends request again, and these data send request instruction again and again send data by the network of this communication delay minimum.
Invention effect
Therefore, the present invention, in keeping user's communication utilization and the balance of utilizing situation of actual network, can realize the high speed of the data download based on multiplexing.
Brief description of the drawings
Fig. 1 is the block diagram that represents the data distributing system of an embodiment of the invention.
Fig. 2 is the block diagram that represents the formation of terminal.
Fig. 3 is the block diagram that represents the formation of communication management information server.
Fig. 4 is the block diagram that represents the formation of data distribution server.
Fig. 5 represents that terminal becomes Data Segmentation according to traffic information the time diagram of the data distribution processing of the situation of piece.
Fig. 6 represents that data distribution server is suitable for the time diagram of the data distribution processing of compressing the situation of cutting apart dispensing of carrying out data.
Fig. 7 represents that data distribution server is divided into data the time diagram of the data distribution processing of the situation of piece again according to the situation of utilizing of network.
Fig. 8 represents that terminal specified network carrys out the time diagram of the data distribution processing of the situation about sending again of request msg.
Fig. 9 is the time diagram that data distribution server is divided into data the data distribution processing of the situation of piece again when being illustrated in network and breaking down.
Figure 10 is the flow chart that represents an example of the control in terminal.
Figure 11 is the flow chart that represents an example of the control in data distribution server.
Figure 12 is the key diagram that represents the example of the packet using in data distributing system.
Figure 13 is the key diagram that represents the concrete example of traffic information database.
Figure 14 is the key diagram that represents the concrete example of network state information database.
Figure 15 is the key diagram of the concrete example of information required while representing that data block is cut apart again.
Description of reference numerals
1 terminal
2-1～2-N communication management information server
3 data distribution servers
4-1～4-N network
5-1～5-N gateway
6 core networks
Embodiment
Below, based on accompanying drawing, an embodiment of the invention are described.
Fig. 1 is an example that represents to be suitable for system of the present invention, is the pie graph of data distributing system, and this data distributing system comprises: the terminal 1 of request msg dispensing; Communication management information server (2-1～2-N), the information that management is relevant with communication use amount in each network (4-1～4-N) of terminal 1; Data distribution server 3, is connected with core network 6, carrys out allocation data according to the request that carrys out self terminal 1; And gateway (5-1～5-N), the connection of terminal 1 and network 4 is carried out to intermediary.As the concrete example of terminal 1, for example can enumerate there is Global System for MobileCommunications (GSM), the mobile phone terminal of multiple mobile communication interfaces of Wideband Code Division Multiple Access (W-CDMA), Worldwide Interoperability for Microwave Acc (WiMAX) etc.Terminal 1, before request msg dispensing, sends traffic information to communication management information server (2-1～2-N) request being connected with each network (4-1～4-N).Terminal 1 has the higher limit of the traffic that can utilize in each network (4-1～4-N), in the time that request msg is provided and delivered, the Data Segmentation of dispensing object is become to block unit, so that the traffic equalization that can utilize in each network (4-1～4-N).Then, via each network (4-1～4-N), the block unit allocation data of request msg delivery server 3 to specify.Data distribution server 3 management and each network (4-1～4-N) utilize the relevant information of situation, judge the big or small data distribution possibility of the data block of asking based on terminal 1.Being judged as possible in the situation that, carry out the multiplexing dispensing of the data of carrying out via each network (4-1～4-N).At certain network because of the congested data-reusing dispensing that can not carry out the data block of asking based on terminal 1, data distribution server 3 is cut apart the data block of the network allocation to congestion state again, then proceed the dispensing of data, so that the situation of utilizing of other network becomes even.
Then, describe for the detailed content of each device.
The device that Fig. 2 shows terminal 1 forms.Terminal 1 has the control part (CPU) 12, memory 16, hard disk 14 and the network interface (10-1～10-N) that are connected with bus 18, and send acceptance division (101-1～101-N) and outside to communicate via the packet of network interface (10-1～10-N).The data communications DB145 that stores the network state information DB143 of the relevant information of the state of traffic information database (DB) 141, management and each network (4-1～4-N) of the management information relevant with the traffic of each network (4-1～4-N) and the management information relevant with data distribution in hard disk 14, carries out the read-write of hard disk 14 by the DCP 161 being loaded on (load) memory 16.
DCP 161 on memory 16 has the network information management module 1615 that the traffic information administration module 1613 of the data communication of data distribution function control module 1611, supervisory communications amount information and the collection information relevant with network condition are provided, this DCP 161 utilizes communication monitoring timer 1617, communication layers between communication management information server (2-1～2-N) and reflection delivery server 3 is monitored, detect wrong generation.
Traffic information DB141 comprises 5 projects: for the network identifier of unique recognition network; Necessary user identifier and authentication information carry out authentication processing in each network time; Be illustrated in the accumulative total traffic of the traffic having used in this network; And represent the traffic higher limit of the traffic that can utilize in this network.In the accumulative total traffic exceeded the traffic higher limit in the situation that, conventionally this network is communicated and stopped or the communication restriction of significant limitation communication speed etc.
Network state information DB143 comprises 3 projects: above-mentioned network identifier; Actual effect communication bandwidth in this network; And the communication relevant with the dispensing of data is delayed.
Data communications DB145 comprises 6 projects: the data identifier that receives the data of object for unique identification; Above-mentioned network identifier; The compress mode that data distribution server 3 is suitably specified in order to cut down communication bandwidth according to the situation of network in the time of data receiver; Via BOB(beginning of block) numbering and the block end numbering of carrying out the data block that definite network 4 receives by above-mentioned network identifier.Sometimes comprise BOB(beginning of block) numbering, the block end numbering of multiple data blocks according to the difference of data distribution form.Detailed content as described later.
The device that Fig. 3 shows communication management information server 2 forms.Communication management information server 2 has the control part (CPU) 22, memory 26, hard disk 24 and the network interface 20 that are connected with bus 28, and send acceptance division 201 and outside to communicate via the packet of network interface 20.In hard disk 24, store traffic information DB241, the information that this traffic information DB241 management is relevant with the traffic in the affiliated network 4 of the communication management information server 2 of terminal 1, carries out the read-write of hard disk 24 by the traffic manager 261 being loaded on memory 26.
Traffic manager 261 on memory 26 has the traffic information administration module 2611 of supervisory communications amount information, this traffic manager 261 utilizes communication monitoring timer 2 613 to carry out the communication layers between monitoring terminal 1 and data distribution server 3, detects wrong generation.The formation of traffic information DB241 is identical with the traffic information DB141 of terminal 1.
The device that Fig. 4 shows data distribution server 3 forms.Data distribution server 3 has the control part (CPU) 32, memory 36, hard disk 34 and the network interface 30 that are connected with bus 38, and send acceptance division 301 and outside to communicate via the packet of network interface 30.The data communications DB345 that stores the relevant information of data message DB343, management and the data distribution of network state information DB341, the storage of the management information relevant with the state of each network (4-1～4-N) information relevant with the data of the object of providing and delivering in hard disk 34, carries out the read-write of hard disk 34 by the DCP 361 being loaded on memory 36.
DCP 361 on memory 36 has the network information management module 3613 that the data communication of data distribution function control module 3611 and the collection information relevant with the situation of network are provided, this DCP 361 utilizes communication monitoring timer 3615 to carry out the communication layers between monitoring terminal 1 and communication management information server (2-1～2-N), detects wrong generation.
Network state information DB341 comprises 4 projects: the network identifier of unique recognition network; The actual effect communication bandwidth that can utilize in this network; The communication relevant with the dispensing of data is delayed; And represent the peaked limit transmitting time of the data block that can send via this network.
Data message DB343 comprises data identifier and the size of data of the data of unique identification dispensing object.The formation of data communications DB345 is identical with the data communications DB145 of terminal 1.
Then,, with reference to the time diagram shown in Fig. 5, whole actions of the present invention being opened to the data distributing system showing describe.
Because terminal 1 sends to 3 requests of data distribution server the data message of downloading via network 4 and core network 6, therefore data distribution is processed from sending data information request (S1-01).The message format of data information request adopts the formation of the PF-01 in Figure 12.Data information request comprises transmission source address, destination-address, packet kind (data information request) and the data identifier for specified data of message.Receive the data identifier comprising in the data distribution server 3 usage data information request of data information request and carried out retrieve data information DB343, obtained the size by data identifier established data.Then, return to terminal 1 (S1-04) using obtained size of data as data message.The message format of data message adopts the formation of the PF-02 in Figure 12, comprises the transmission source address, destination-address, packet kind (data message) of message, size for the data identifier of specified data and specified data.The preparation of the multiplexing download of data is carried out in terminal 1 conduct that has received data message, and the communication management information server (2-1～2-N) of the traffic information of each network (4-1～4-N) that self can utilize to management sends traffic information request (S1-07, S1-10).The message format of traffic information request is as shown in the PF-03 in Figure 12.Necessary user identifier and authentication information when traffic information request comprises transmission source address, destination-address, packet kind (traffic information request), the network identifier of message and authenticates.Receive the communication management information server (2-1～2-N) of traffic information request to the network identifier comprising in traffic information request, user identifier and authentication information, compare with network identifier, user identifier and authentication information in traffic information DB241, no problemly return to traffic information (S1-13, S1-16) to terminal 1 if authenticate.The message format of traffic information is as shown in the PF-04 of Figure 12.Traffic information comprises the traffic higher limit that the accumulative total traffic that in the transmission source address, destination-address, packet kind (traffic information), network identifier, user identifier, this network of message, user has used and this network are permitted.The terminal 1 that has received traffic information is used the network identifier, user identifier, the accumulative total traffic and the traffic higher limit that in traffic information, comprise, and the corresponding project in traffic information DB141 is upgraded.Then, according to traffic higher limit with accumulative total the traffic poor, calculate the traffic that can utilize in this network.Figure 13 is the concrete example of traffic information DB141.In the example of Figure 13, can utilize N network, in traffic information DB141, stored each network user identifier (user 1, user 2 ..., user N), corresponding authentication information (password 1, password 2 ..., password N), the accumulation traffic and the traffic higher limit of each network.In network 1, because the accumulation traffic is 90MB, traffic higher limit is 100MB, and the remaining bandwidth that therefore terminal 1 can be utilized in network 1 is 10MB.Equally, the remaining bandwidth that can utilize in network 2 is 20MB, and the remaining bandwidth that can utilize in network N is 30MB.Terminal 1 becomes block unit (S1-19) according to the ratio of the remaining bandwidth that can utilize of each network by the Data Segmentation of request dispensing.For example, the bandwidth of can utilizing in network 4-1,4-2,4-3 is respectively 10MB, 20MB, 30MB, the size of the data of providing and delivering in request is 120MB, for network 4-1,4-2,4-3, the size of the piece of terminal 1 request msg dispensing is respectively 20MB, 40MB, 60MB.The terminal 1 calculating after the size of the data block that should provide and deliver in each network 4 is upgraded data communications DB145.In the renewal of data communications DB, first terminal 1 distributes the corresponding data receiver of each network address, and this data receiver address is the data receiver address that terminal 1 is used while receiving data.Then,, according to each network of being determined by network identifier, upgrade data receiver address, BOB(beginning of block) numbering and block end numbering.Data distribution is carried out with packet unit, because packet has fixing size, by using block size divided by data package size, can determine necessary number-of-packet and BOB(beginning of block) numbering and block end numbering.Then, send Data Segmentation to data distribution server 3 and send request (S1-22), during this Data Segmentation sends request, contain the information using in the time that data communications DB145 upgrades.The message format that Data Segmentation sends request adopts the formation of the PF-05 in Figure 12.Data information request comprises transmission source address, destination-address, packet kind (Data Segmentation sends request), the data identifier of specified data, the list of network identifier, the list of data receiver address, the list of BOB(beginning of block) numbering and the list that block end is numbered of message.Network identifier, data receiver address, BOB(beginning of block) are numbered, these 4 projects are numbered in block end becomes 1 group, the network using while being used to specify data block dispensing, data receiver address and the block size of terminal 1.Receive data distribution server 3 that Data Segmentation sends request according to network and the block size of being specified by terminal 1 from terminal 1, started Data Segmentation and send.Data distribution server 3 does not have the network interface corresponding with each network, but can distribute and send request the data receiver address specified by each network by Data Segmentation to each data block, can specify the network that send data block.
The action of situation about the size of data block being adjusted again according to network condition then, is described.Fig. 6 is the first situation, in this example, under judging because of obvious time-consuming situations of the transmission former thereby data block that terminal 1 is asked such as specific network congestions, the data block sending by this network is compressed to processing.Step S2-01 in Fig. 6 is identical with the step S1-01 to S1-22 in Fig. 5 to step S2-22.The data distribution server that has received Data Segmentation request in step S2-22 numbers computing block size according to BOB(beginning of block) numbering and the block end of the appointment of each network.Block size deducts value after BOB(beginning of block) numbering by block end numbering and is multiplied by data package size and obtains.Data package size is known value corresponding to each network, such as, in the moving body net of mobile phone etc., usually uses the size of 128 bytes as packet.Calculating after block size, data distribution server 3, with reference to network state information DB341, is obtained the actual effect communication bandwidth of each network.The information relevant with the state of network can be carried out regular update by the network performance tools for measurement of PING, Traceroute etc.The concrete example of network state information DB341 as shown in figure 14.In the example of Figure 14, N network is the state that can utilize, in network state information DB341, stored each network actual effect communication bandwidth (1Mbps, 50Kbps ..., 1Mbps), communication delay (100ms, 500ms ..., 300ms) and the limit transmitting time of each network (300 seconds, 300 seconds ..., 600 seconds).Wherein, limit transmitting time is the setting that system is predetermined, and can not change along with the variation of network condition.Data distribution server 3, for each network, by using the block size having calculated divided by actual effect communication bandwidth, sends the necessary time thereby calculate data block.Then, the transmitting time to the data block calculating and limit transmitting time compare.Be that data block transmitting time has exceeded in the situation (S2-25) of limit transmitting time in result relatively, the compression of data distribution server to this network applicable data, calculates data block transmitting time again.For example, the data block transmitting time in network 2 is 330 seconds, and in the case of the data volume of estimating to cut down 10% by compression, then data block transmitting time after calculating is 297 seconds, and this value is limit transmitting time following (S2-28).If being judged as by compression, data distribution server 3 can send data block in limit transmitting time, thereby calculate the BOB(beginning of block) numbering and the block end numbering that make new advances by the data block after compression divided by data package size, and BOB(beginning of block) numbering, block end numbering and the compress mode of the record (record) corresponding with this network in data communications DB345 are upgraded.The algorithm using when compress mode represents data compression, generally designates the normally used algorithm of zip, rar etc.Then, data distribution server 3 sends data compression notice (S2-31) to terminal 1.The message format of data compression notice adopts the formation of the PF-06 of Figure 12.Data compression notice comprises the transmission source address, destination-address, packet kind (data compression notice) of message, for the list of the list of the list of the data identifier of specified data, network identifier, data distribution address, compress mode, the again list of the BOB(beginning of block) numbering that calculates and the list that block end is numbered.The terminal 1 that has received data compression notice is upgraded the corresponding record in data communications DB145, for the dispensing of data is prepared.What the data distribution server 3 that has sent data compression notice started data cuts apart transmission (S2-34).
Then, with Fig. 7, the second situation is described.In this example, in the obvious time-consuming situation of the transmission former thereby data block that terminal 1 is asked of judging because of specific network congestion etc., the data block sending by this network is compressed to processing, but only process and can not tackle the congested of network by compression, also need to utilize other network to carry out the transmission of data block.Step S3-01 in Fig. 7 is identical with the step S2-01 to S2-25 in Fig. 6 to step S3-25.In step S3-28, attempt shortening data block transmitting time by the data compression identical with Fig. 6, but under the second situation, the data block transmitting time being suitable for after compression still goes beyond the limit of transmitting time.In this case, data distribution server 3 carries out cutting apart again of data block.Cut apart again according to following order and carry out.First, having produced in the network that exceeds data block transmitting time, long-pending by actual effect communication bandwidth and limit transmitting time at first, calculate the largest block size that can send in this network.Then, in step S3-22, send request from the Data Segmentation being sent by terminal 1 block size of being appointed as through this network transmission and deduct the largest block size that can send by this network, calculate the size of the remaining data block that can not send by this network.This remaining data block is called to the piece that exceeds in this network.Data distribution server 3 is cut apart exceeding piece again, to send and to exceed piece via the network beyond this network.Cut apart again so that the surplus of the size of data that can send in each network becomes equalization, that is, make the utilance homogenizing of network.Figure 15 shows the concrete example for partitioning algorithm is described again.Figure 15 shows terminal 1 and has asked to send respectively by network 1, network 2, network 3, network 4 state of the data block of 50MB.Because network 2 occurs congestedly, the maximum 50KBPS that also only can send is the data of 15MB with 300 seconds amassing, and therefore has the piece that exceeds of 35MB.When by the exceeding piece and send via other network of network 2, the data block size that the network that data distribution server 3 calculates other can send.In Figure 15, the data block size that can send in network 1 is 300MB (350-50), and the data block that can send in network 3,4 size is 600MB (650-50).Then, according to exceeding piece recently cutting apart of the data block size that can send.For example network 1 is assigned with 7MB, and network 3,4 is assigned with 14MB.Data distribution server 3 adds above-mentioned value in the data block size that originally should send by network 1, network 3, network 4, again calculates the data block size making new advances, and upgrades data communications DB345 (S3-31).Then, send Data Segmentation to terminal 1 and send notice, the data block size (S3-34) that notice calculates again.Data Segmentation sends the formation of the PF-07 in the message format employing Figure 12 notifying.Data compression notice comprises the list of list, the data receiver address of transmission source address, destination-address, the packet kind (Data Segmentation sends notice) of message, the data identifier for specified data, the operation species that represents the update method of the database based on content of announcement, network identifier, the list of BOB(beginning of block) numbering and the list of block end numbering that calculate again.Operation species is divided into " renewal " or " appending " these two kinds of values, and under news more, the already present record of data communications DB145 is rewritten as new value (S3-37) by terminal 1.The data distribution server 3 of the renewal processing of the data block that is through with size starts Data Segmentation and sends (S3-40).
Then, the processing that wrong situation has occurred in data transmission is described.Fig. 8 is the message order of having carried out the transmission processing again of data in the time having there is data-bag lost.Terminal 1 (S4-01) the process that receives data from data distribution server detects data-bag lost (S4-04).Terminal 1 retrieval network state information DB143, detects communication and delays minimum network (S4-07).Delay minimum network by communication and ask to carry out sending again of data, can make data send again needed minimal time.Terminal 1 sends data to data distribution server 3 and sends request, and the network (S4-10) that uses while sending again of notification data.Data send request the formation that adopts the PF-08 in Figure 12 again.Data send request the block number that comprises the transmission source address, destination-address, packet kind (data send request again) of message, sends for the data identifier of specified data, network of network identifier, data receiver address, request that specific data uses while transmission again again again.Receive from terminal 1 the data distribution server 3 that data send request again and returned to asked data block (S4-13) via the network of specifying to terminal.
Then, use Fig. 9, the mistake processing while breaking down in network during to communication describes.In certain network being detected, there is fault (S5-04) at cut apart (S5-01) in delivery process of data in data distribution server 3.For the transmission that makes the predetermined data block sending by this network that fault has occurred is accomplished, data distribution server 3 is distinguished the data block of the data block having sent in this network and transmission.Then, the data block not sending is same with the S3-31 of Fig. 7, cuts apart, to send via other network according to the situation of utilizing of network again.Particularly, having occurred in the network of fault, after calculating the size of the data block not sending, data distribution server 3 is cut apart not sending piece, to send this and do not send piece via having there is network outside the network of fault.So that the mode of the surplus equalization of the size of data that can send in each network, that is, so that the uniform mode of the utilance of network is cut apart.When not sending data block and cut apart again, because other network has been assigned with the transmission processing of data block separately, data separately send well afoot, therefore the size of data block is not calculated again, distributed to each network as the data block different from already present data block.In the time that data distribution server 3 sends Data Segmentation transmission notice to terminal 1, such processing can be appointed as operation species " appending " (S5-10).Receive Data Segmentation and sent the terminal 1 of notifying in the time that data communications DB145 is upgraded, Data Segmentation is sent to the BOB(beginning of block) numbering and the block end numbering that in notice, comprise, be appended to and utilize on this network identifier and the determined record of data identifier as new projects.Its result, this record of data communications DB145 has kept the group of 2 above BOB(beginning of block) numberings and block end numbering.The data distribution server 3 having carried out after the reallocation of data block is proceeded Data Segmentation transmission processing (S5-16).
Then,, with reference to the flow chart of Figure 10, an example of the control that terminal 1 is carried out describes.This flow chart was performed with the cycle of regulation.Terminal 1 (step F 1-01) in the time of starting makes message sink circulation start (step F 1-04), receives the message from network interface (10-1～10-N).In step F 1-07, the message that judgement receives is the data message from data distribution server 3.Be data message in the message receiving, advance to step F 1-28, the communication management information server (2-1～2-N) being connected to the all-network (4-1～4-N) that can utilize with terminal 1 sends traffic information request.In step F 1-10, in the situation that receiving traffic information from communication management information server 2, advance to step F 1-31, judge whether to have received traffic information from all communication management information servers (2-1～2-N).In the case of having received traffic information from all communication management information servers (2-1～2-N), advance to step F 1-34, after the Data Segmentation of downloaded object being become to block unit according to the traffic, advance to step F 1-37, send Data Segmentation dispensing request to data distribution server 3.The in the situation that of receiving data compression notice from data distribution server 3 in step F 1-13, advance to step F 1-40, the information of store compressed mode in data communications DB145.In step F 1-16, received Data Segmentation transmission notice from data distribution server 3 in the situation that, advance to step F 1-43, judge whether the operation species that Data Segmentation sends in notice is " appending ".If operation species is not " appending " but " renewal " advances to step F 1-46, the BOB(beginning of block) numbering to this record of being specified by data identifier and network identifier and block end are numbered and are rewritten renewal.If being " appending ", operation species advances to step F 1-52, to this record addition BOB(beginning of block) numbering and block end numbering.The in the situation that of data-bag lost being detected in step F 1-19, advance to step F 1-49, retrieval network state information DB143, designated communication is delayed minimum network and is sent packet to data distribution server 3 and send request.Message sink circulates in close a terminal (step F 1-22) at 1 o'clock and finishes (step F 1-25).By above-mentioned processing, terminal 1 realized based on traffic information come specific data block size data cut apart transmission processing.
Then,, with reference to the flow chart of Figure 11, an example of the control that data delivery server 3 is carried out describes.This flow chart was performed with the cycle of regulation.Data distribution server 3 (step F 2-01) in the time of starting makes message sink circulation start (step F 2-04), receives the message from network interface 30.In step F 2-07, judge whether received message is data information request.Be data information request in the message receiving, advance to step F 2-25, send the data message corresponding with data identifier to terminal 1.In step F 2-10, be, Data Segmentation sends request, to advance to step F 2-28 in the message receiving, judge whether the transmitting time of the piece that terminal asks is below the limit transmitting time of each network.Being below the limit transmitting time in the situation that, advance to step F 2-43, start to carry out Data Segmentation transmission.Exceeded the network of limit transmitting time in the transmitting time that has the piece that terminal asks, advanced to step F 2-31, whether the transmitting time that judgement has been suitable for the piece after compression is below the limit transmitting time of each network.If limit transmitting time, with the next step F 2-46 that advances to, sends data compression notice to terminal.The transmitting time that has been suitable for the piece after compression if exist has exceeded in the situation of network of limit transmitting time, advances to step F 2-34, according to the situation of network, the Data Segmentation of dispensing object is become to block unit.Dividing method is identical with the step S3-31 in Fig. 7.Then, advance to step F 2-49, send Data Segmentation to terminal 1 and send notice.Now, operation species is set as to " renewal ".In step F 2-13, in the situation that having received data from terminal 1 and sending request again, advance to step F 2-37, carry out data transmission processing again via the specified network of terminal 1.The in the situation that of network failure being detected in step F 1-16, advance to step F 2-40, should become block unit by the Data Segmentation of the distribution via internet that fault has occurred.Dividing method is identical with the step S5-07 in Fig. 9.Then, advance to step F 2-52, send Data Segmentation to terminal 1 and send notice.Now, operation species is set as to " appending ".Message sink circulates in (step F 3-19) while closing data distribution server 3 and finishes (step F 3-22).By above-mentioned processing, data distribution server 3 realized flexible correspondence network the data of utilizing situation cut apart transmission processing.
Industrial applicibility
As mentioned above, in data distributing system of the present invention, can make utilizing situation the two averaging out of user's traffic information and network, and by the cutting apart dispensing and can shorten the required time of data distribution of data, can be applicable to communication system and application service taking cognitive radio as representative, that utilize multiple different networks.
Claims (12)
1. a server, connects via multiple Networks and Communications terminals, has:
Network interface, communicates by above-mentioned network; And
Control part, for controlling above-mentioned network interface,
The above-mentioned network interface of above-mentioned control part control, to receiving the data identifier that comprises the data for identifying dispensing object from above-mentioned communication terminal, be used for the list of some network of network identifiers of identifying above-mentioned multiple networks, and the list that BOB(beginning of block) is numbered and block end is numbered that allocation data is divided into the data block after piece according to the ratio of above-mentioned multiple networks residue traffic is separately in the case of interior Data Segmentation sends request, send request to the specified data block of each distribution via internet of being specified by above-mentioned network identifier according to this Data Segmentation,
The above-mentioned residue traffic is according to the difference residue traffic that calculate, that above-mentioned network can utilize separately that represents the accumulative total traffic of above-mentioned multiple networks traffic having used separately and the traffic maximum of the peak volume that the above-mentioned multiple networks of expression allowed separately
Above-mentioned server possesses memory, and this memory stores has:
Data communications database, keeps the list of above-mentioned data identifier, above-mentioned network identifier and the BOB(beginning of block) of above-mentioned data block numbering and block end numbering; And
Network state information database, keeps the communication delay of the actual effect communication bandwidth of above-mentioned network identifier, above-mentioned network, above-mentioned network and expression to utilize the peaked limit transmitting time of the call duration time of above-mentioned network,
Above-mentioned control part is in the time receiving above-mentioned Data Segmentation and send request, for each above-mentioned network, the size that sends request middle comprised above-mentioned data block with above-mentioned Data Segmentation is carried out calculated data piece transmitting time divided by above-mentioned actual effect communication bandwidth, more above-mentioned data block transmitting time and above-mentioned limit transmitting time, in the situation that above-mentioned data block transmitting time is longer than above-mentioned limit transmitting time, carry out data compression, above-mentioned data block transmitting time after data compression is shorter than above-mentioned limit transmitting time, generated data compression notice, this data compression notice is used for the advisory that sends the data block after above-mentioned data compression to above-mentioned communication terminal,
Above-mentioned control part is in the case of the data block transmitting time after data compression is suitable for is longer than above-mentioned limit transmitting time, amass to calculate the maximum data block size that can send in above-mentioned network according to above-mentioned actual effect communication bandwidth and above-mentioned limit transmitting time, the above-mentioned data block size comprising from above-mentioned Data Segmentation sends request deducts above-mentioned maximum data block size, thereby calculate and exceed data block size in above-mentioned network, in network below above-mentioned data block transmitting time is above-mentioned limit transmitting time, calculate the remaining data block size in above-mentioned network according to the difference of above-mentioned maximum data block size and above-mentioned data block size, according to recently cutting apart of above-mentioned remaining data block size of the above-mentioned data block size that exceeds, carry out adjusting again of data block size.
2. server as claimed in claim 1, is characterized in that,
Above-mentioned data communications database also possesses the data receiver address using when above-mentioned communication terminal receives data,
Above-mentioned control part is determined above-mentioned network with above-mentioned data receiver address.
3. server as claimed in claim 1, is characterized in that,
Above-mentioned data compression notification package is containing the data identifier for determining the data after compression, for determining the BOB(beginning of block) numbering of above-mentioned data block and the list of block end numbering after list, the data compression of list, compress mode of the network of network identifier that sends the data after compression.
4. server as claimed in claim 1, is characterized in that,
Above-mentionedly exceed the cutting apart so that the surplus of the size of data that can send in each network becomes impartial mode cuts apart of data block size.
5. server as claimed in claim 1, is characterized in that,
Above-mentioned control part is controlled to after the adjustment again of above-mentioned data block size and sends Data Segmentation to above-mentioned communication terminal and send notice, and this Data Segmentation sends the BOB(beginning of block) numbering of notification package containing data identifier, network identifier list and after adjusting again and the list of block end numbering.
6. server as claimed in claim 5, is characterized in that,
Above-mentioned control part is in the time network failure being detected by above-mentioned network interface, by the data block not sending in the above-mentioned network that fault occurs according to recently the cutting apart of the remaining data block size of the network outside the above-mentioned network that fault occurs, thereby carry out adjusting again of data block size.
7. the data communications method in server, this server connects via multiple Networks and Communications terminals,
Above-mentioned server has the network interface communicating by above-mentioned network and controls the control part of above-mentioned network interface,
The above-mentioned network interface of above-mentioned control part control, to receiving the data identifier that comprises the data for identifying dispensing object from above-mentioned communication terminal, be used for the list of some network of network identifiers of identifying above-mentioned multiple networks, and the list that BOB(beginning of block) is numbered and block end is numbered that allocation data is divided into the data block after piece according to the ratio of above-mentioned multiple networks residue traffic is separately in the case of interior Data Segmentation sends request, send request to the specified data block of each distribution via internet of being specified by above-mentioned network identifier according to this Data Segmentation,
The above-mentioned residue traffic is according to the difference residue traffic that calculate, that above-mentioned network can utilize separately that represents the accumulative total traffic of above-mentioned multiple networks traffic having used separately and the traffic maximum of the peak volume that the above-mentioned multiple networks of expression allowed separately
Above-mentioned server possesses memory, and this memory stores has:
Data communications database, keeps the list of above-mentioned data identifier, above-mentioned network identifier and the BOB(beginning of block) of above-mentioned data block numbering and block end numbering; And
Network state information database, keeps the communication delay of the actual effect communication bandwidth of above-mentioned network identifier, above-mentioned network, above-mentioned network and expression to utilize the peaked limit transmitting time of the call duration time of above-mentioned network,
Above-mentioned control part is in the time receiving above-mentioned Data Segmentation and send request, the size that sends request middle comprised above-mentioned data block for each above-mentioned network with above-mentioned Data Segmentation is carried out calculated data piece transmitting time divided by above-mentioned actual effect communication bandwidth, more above-mentioned data block transmitting time and above-mentioned limit transmitting time, in the situation that above-mentioned data block transmitting time is longer than above-mentioned limit transmitting time, carry out data compression, above-mentioned data block transmitting time after data compression is shorter than above-mentioned limit transmitting time, generated data compression notice, this data compression notice is used for the advisory that sends the data block after above-mentioned data compression to above-mentioned communication terminal,
Above-mentioned control part is in the case of the data block transmitting time after data compression is suitable for is longer than above-mentioned limit transmitting time, amass to calculate the maximum data block size that can send in above-mentioned network according to above-mentioned actual effect communication bandwidth and above-mentioned limit transmitting time, the above-mentioned data block size comprising from above-mentioned Data Segmentation sends request deducts above-mentioned maximum data block size, thereby calculate and exceed data block size in above-mentioned network, in network below above-mentioned data block transmitting time is above-mentioned limit transmitting time, calculate the remaining data block size in above-mentioned network according to the difference of above-mentioned maximum data block size and above-mentioned data block size, according to recently cutting apart of above-mentioned remaining data block size of the above-mentioned data block size that exceeds, carry out adjusting again of data block size.
8. data communications method as claimed in claim 7, is characterized in that,
Above-mentioned data communications database also possesses the data receiver address using when above-mentioned communication terminal receives data,
Above-mentioned control part is determined above-mentioned network with above-mentioned data receiver address.
9. data communications method as claimed in claim 7, is characterized in that,
Above-mentioned data compression notification package is containing the data identifier for determining the data after compression, for determining the BOB(beginning of block) numbering of above-mentioned data block and the list of block end numbering after list, the data compression of list, compress mode of the network of network identifier that sends the data after compression.
10. data communications method as claimed in claim 7, is characterized in that,
Above-mentionedly exceed the cutting apart so that the surplus of the size of data that can send in each network becomes impartial mode cuts apart of data block size.
11. data communications methods as claimed in claim 7, is characterized in that,
Above-mentioned control part is controlled to after the adjustment again of above-mentioned data block size and sends Data Segmentation to above-mentioned communication terminal and send notice, and this Data Segmentation sends the BOB(beginning of block) numbering of notification package containing data identifier, network identifier list and after adjusting again and the list of block end numbering.
12. data communications methods as claimed in claim 11, is characterized in that,
Above-mentioned control part is in the time network failure being detected by above-mentioned network interface, by the data block not sending in the above-mentioned network that fault occurs according to recently the cutting apart of the remaining data block size of the network outside the above-mentioned network that fault occurs, thereby carry out adjusting again of data block size.
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| WO2014049761A1 (en) * | 2012-09-26 | 2014-04-03 | 富士通株式会社 | System, information processing device, and image processing method |
| CN103023994B (en) * | 2012-11-29 | 2015-09-16 | 深圳市新国都技术股份有限公司 | A kind of remote download method for POS |
| KR101429891B1 (en) | 2012-12-11 | 2014-08-13 | 주식회사에어플러그 | A method for adapting reception of content data to receiving state and an apparatus for said method |
| JP6248671B2 (en) * | 2014-02-10 | 2017-12-20 | 富士通株式会社 | Information processing apparatus, method, program, and information processing system |
| WO2021090726A1 (en) * | 2019-11-08 | 2021-05-14 | ソニー株式会社 | Information processing device, information processing method, and program |
| CN112423297A (en) * | 2020-11-16 | 2021-02-26 | 重庆满集网络科技有限公司 | Cross-border e-commerce and mobile terminal interaction method, system and storage medium |
| CN116800691B (en) * | 2023-08-25 | 2023-11-21 | 明度智云(浙江)科技有限公司 | Cache data segmentation processing method, system and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1939036A (en) * | 2004-06-08 | 2007-03-28 | 国际商业机器公司 | Optimized concurrent data download within a grid computing environment |
| CN101296152A (en) * | 2008-06-26 | 2008-10-29 | 腾讯科技（深圳）有限公司 | Data scheduling method and system of equity linked network |
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| CN1939036A (en) * | 2004-06-08 | 2007-03-28 | 国际商业机器公司 | Optimized concurrent data download within a grid computing environment |
| CN101296152A (en) * | 2008-06-26 | 2008-10-29 | 腾讯科技（深圳）有限公司 | Data scheduling method and system of equity linked network |
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