CN102413514A - Data distribution device and data distribution system - Google Patents
Data distribution device and data distribution system Download PDFInfo
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- CN102413514A CN102413514A CN2010102928717A CN201010292871A CN102413514A CN 102413514 A CN102413514 A CN 102413514A CN 2010102928717 A CN2010102928717 A CN 2010102928717A CN 201010292871 A CN201010292871 A CN 201010292871A CN 102413514 A CN102413514 A CN 102413514A
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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 via network to the provide and deliver improvement of system of data of user.
Background technology
Along with the access network technologies that with Fiber To The Home (FTTH), various wireless communication technology is representative is more and more flourishing, the network bandwidth that the user can utilize increases gradually, and means of communication also trends towards variation gradually.The variation of means of communication makes the user use a plurality of communication paths simultaneously so that the communication high speed becomes possibility, shortens the technology that data are downloaded the required time thereby for example proposed to send simultaneously data through a plurality of communication layers.For example in prior art japanese kokai publication hei 07-212487 number, disclose data have been divided into a plurality of of equal-sized, and sent the technology that data realize high speed communication simultaneously through a plurality of communication layers.In addition, in TOHKEMY 2000-122938 communique, disclose and when partition data, implemented the non-homogeneous technology of cutting apart that the disposal ability at terminal is taken into account.
Patent documentation 1: japanese kokai publication hei 07-212487 number
Patent documentation 2: TOHKEMY 2000-122938 number
In above-mentioned prior art, because the user does not consider to utilize simultaneously the environment of a plurality of Internet resources, so the utilization rate of network may be opposite with user's intention.Especially in radio communication; Because the communication resource is exhausted easily; Therefore adopt set the method for the higher limit of the traffic to the user more, but in above-mentioned prior art, do not consider the behaviour in service of network, so there is the for example traffic quilt danger of consumption exceedingly of particular network.In addition, about the utilization of Internet resources, not only user's requirement is very important, and actual network utilisation situation also is very important.For example according to patent documentation 1 disclosed technology; Under the situation that data is divided into impartial size and these divided data are sent via heterogeneous networks; Sometimes according to the difference of utilizing situation of network, the poor of tolerable not can take place in the needed time of communicating by letter.In addition; Requiring under the most situation of user's requirement and network provider is opposite; The user tends to require the weak pointization of call duration time strongly; And the network provider payes attention to is to make the resource utilization smoothing, avoid congested, in above-mentioned prior art, is not provided at the method for regulating under the situation that such demands of different clashes.
Summary of the invention
Among the present invention, the user collects the information relevant with the traffic of the all-network that can utilize through the terminal, data are cut apart so that the traffic smoothing of each network, and to the dispensing of cutting apart of data distribution server requests data.Each network of data distribution server monitoring utilize situation, the limit size of the data volume that calculating can be provided and delivered.As the result who has carried out according to user's request after data are cut apart; In certain network; When the size of divided data piece had exceeded the limit size that can provide and deliver, the data distribution server carried out cutting apart again of data according to the situation of utilizing of network, and to the user notification result.
A mode of the present invention is a kind of communication terminal, is connected with external device (ED) via a plurality of networks, has: network interface communicates through above-mentioned network; And control part; The peak volume of being allowed separately according to the accumulative total traffic of expression above-mentioned a plurality of networks traffic of having used separately and the above-mentioned a plurality of networks of expression poor; Calculate the residue traffic that above-mentioned a plurality of network can utilize separately; Above-mentioned control part is according to the piece of partition data recently of the above-mentioned residue traffic; And generate data and cut apart the request of transmission, these data are cut apart and are sent the request indication and send this divided data piece to each network of correspondence, and above-mentioned network interface sends above-mentioned data to above-mentioned external device (ED) cuts apart the request of transmission.
Another mode of the present invention is a kind of communication terminal, is connected with external device (ED) via a plurality of networks, comprising: network interface communicates through above-mentioned network; And control part; Be used to control this network interface; Above-mentioned control part detects under the situation of garble in the transmission from the said external device; Detect the minimum network of communication delay in above-mentioned a plurality of network, generate the data request of redispatching, the request of redispatching of these data is indicated through the minimum network of this communication delay and is sent once more data.
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 a plurality of networks; The control part that above-mentioned communication terminal has the network interface that communicates through above-mentioned network and controls this network interface; Said control part is controlled as follows: the peak volume of being allowed separately according to the accumulative total traffic and the above-mentioned a plurality of networks of expression of expression above-mentioned a plurality of networks traffic of having used separately poor; Calculate the residue traffic that above-mentioned a plurality of network can utilize separately,, generate data and cut apart the request of transmission according to the piece of partition data recently of the above-mentioned residue traffic; These data are cut apart to send asks indication to send this divided data piece to each network of correspondence, sends above-mentioned data to above-mentioned external device (ED) and cuts apart the request of transmission.
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 a plurality of networks; The control part that above-mentioned communication terminal has the network interface that communicates through above-mentioned network and controls this network interface; Above-mentioned control part detects under the situation of garble in the transmission from the said external device; Detect the minimum network of communication delay in above-mentioned a plurality of network, generate the data request of redispatching, the request of redispatching of these data is indicated through the minimum network of this communication delay and is sent once more data.
The invention effect
Therefore, the present invention can realize the high speed of downloading based on multiplexing data in the balance of utilizing situation of the network that keeps user's communications utilization and reality.
Description of drawings
Fig. 1 is the block diagram of the data distributing system of expression an embodiment of the invention.
Fig. 2 is the block diagram of the formation at expression terminal.
Fig. 3 is the block diagram of the formation of expression communication management information server.
Fig. 4 is the block diagram of the formation of expression data distribution server.
Fig. 5 is that the expression terminal is divided into data according to traffic information the time diagram that the data distribution of the situation of piece is handled.
Fig. 6 is the time diagram that expression data distribution server is suitable for the data distribution processing of compressing the situation of cutting apart dispensing of carrying out data.
Fig. 7 is the time diagram that expression data distribution server is handled according to the data distribution of utilizing situation data to be divided into again the situation of piece of network.
Fig. 8 is the time diagram that expression terminal specified network comes the data distribution of the situation of redispatching of request msg to handle.
Fig. 9 is that the data distribution server is divided into data the time diagram that the data distribution of the situation of piece is handled again when being illustrated in network and breaking down.
Figure 10 is the flow chart of an example of the control in the expression terminal.
Figure 11 is the flow chart of an example of the control in the expression data distribution server.
Figure 12 is the key diagram of the example of employed packet in the expression data distributing system.
Figure 13 is the key diagram of the concrete example of expression traffic information database.
Figure 14 is the key diagram of the concrete example of expression network state information database.
Figure 15 is the key diagram of expression data block concrete example of required information when cutting 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 the example that expression is 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), each network at management and terminal 1 (relevant information of communication use amount among the 4-1～4-N); Data distribution server 3 is connected with core network 6, according to the request that comes self terminal 1 data of providing and delivering; And gateway (5-1～5-N), to being connected of terminal 1 and network 4 carrying out intermediary.As the concrete example at terminal 1, for example can enumerate have Global System for MobileCommunications (GSM), the mobile phone terminal of a plurality of mobile communication interfaces of Wideband Code Division Multiple Access (W-CDMA), Worldwide Interoperability for Microwave Acc (WiMAX) etc.Terminal 1 before request msg dispensing, to each network (the communication management information server of 4-1～4-N) is connected (request transmission traffic information of 2-1～2-N).(higher limit that has the traffic that can utilize among the 4-1～4-N) when request msg is provided and delivered, is divided into block unit with the data of dispensing object, so that (traffic that can utilize among the 4-1～4-N) is impartial at each network at each network at terminal 1.Then, (4-1～4-N), request msg delivery server 3 is with the block unit dispensing data of appointment via each network.(4-1～4-N) utilizes the relevant information of situation, judges whether the data distribution of size of the data block of being asked based on terminal 1 is possible for data distribution server 3 management and each network.Be judged as under the possible situation, carrying out via each network (4-1～4-N) and the data multiplexing of carrying out dispensing.Under the situation of certain network because of the data multiplex dispensing of the congested data block that can not carry out being asked based on terminal 1; Data distribution server 3 will be cut apart to the data block of the network allocation of congestion state again; Proceed the dispensing of data then, so that the situation of utilizing of other network becomes even.
Then, the detailed content to each device describes.
The device that Fig. 2 shows terminal 1 constitutes.Terminal 1 have the control part (CPU) 12, memory 16, hard disk 14 and the network interface that are connected with bus 18 (10-1～10-N), and via network interface (packet of 10-1～10-N) send acceptance division (101-1～101-N) communicate with the outside.Store in the hard disk 14 management and each network (the traffic information database (DB) 141 of the information that the traffic of 4-1～4-N) is relevant, manage and each network (the data communications DB145 of the information that the network state information DB143 of the information that the state of 4-1～4-N) is relevant and management are relevant with data distribution carries out the read-write of hard disk 14 through the DCP 161 that is loaded on (load) memory 16.
Traffic information DB141 comprises 5 projects: the network identifier that is used for unique recognition network; Necessary user identifier and authentication information when in each network, carrying out authentication processing; Be illustrated in the accumulative total traffic of the traffic of having used in this network; And the traffic higher limit of the traffic of representing to utilize in this network.Exceeded under the situation of traffic higher limit in the accumulative total traffic, usually this network has been communicated and stop 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: be used for the data identifier that unique identification receives the data of object; Above-mentioned network identifier; Data distribution server 3 is according to the compress mode of network conditions suitable appointment in order to cut down communication bandwidth when Data Receiving; The BOB(beginning of block) numbering and the block end numbering of the data block that receives via the network of confirming through above-mentioned network identifier 4.Sometimes the BOB(beginning of block) numbering, the block end numbering that comprise a plurality of data blocks according to the difference of data distribution form.Detailed content is of the back.
The device that Fig. 3 shows communication management information server 2 constitutes.Communication management information server 2 has control part (CPU) 22, memory 26, hard disk 24 and the network interface 20 that is connected with bus 28, and send acceptance division 201 and outside to communicate via the packet of network interface 20.Store traffic information DB241 in the hard disk 24; The relevant information of the traffic in the affiliated network 4 of the communication management information server 2 at this traffic information DB241 management and terminal 1 is carried out the read-write of hard disk 24 through the traffic manager 261 that is loaded on the memory 26.
Traffic manager 261 on the 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 come the communication layers between monitoring terminal 1 and the data distribution server 3, the generation of faults.The formation of traffic information DB241 is identical with the traffic information DB141 at terminal 1.
The device that Fig. 4 shows data distribution server 3 constitutes.Data distribution server 3 has control part (CPU) 32, memory 36, hard disk 34 and the network interface 30 that is connected with bus 38, and send acceptance division 301 and outside to communicate via the packet of network interface 30.(the data communications DB345 of the information that data message DB343, management and the data distribution of the information that the data of the network state information DB341 of the information that the state of 4-1～4-N) is relevant, storage and the object of providing and delivering are relevant is relevant carries out the read-write of hard disk 34 through the DCP 361 that is loaded on the memory 36 with each network to store management in the hard disk 34.
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 expression via this network the peaked limit transmitting time of the data block that can send.
Data message DB343 comprises the 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 at terminal 1.
Then, with reference to time diagram shown in Figure 5, whole actions of the present invention being opened the data distributing system that shows describe.
Because terminal 1 is sent data downloaded information via network 4 and core network 6 to 3 requests of data distribution server, so data distribution is handled from sending data information request (S1-01) beginning.The message format of data information request adopts the formation of the PF-01 among Figure 12.Data information request comprises transmission source address, destination-address, the packet kind (data information request) of message and the data identifier that is used for specified data.The data distribution server 3 that has received data information request uses the data identifier that is comprised in the data information request to come retrieve data information D B343, obtains the size by the data identifier established data.Then, the size of data that is obtained is returned to terminal 1 (S1-04) as data message.The message format of data message adopts the formation of the PF-02 among Figure 12, comprise message transmission source address, destination-address, packet kind (data message), be used for the data identifier of specified data and the size of specified data.The terminal 1 that has received data message is as carrying out the preparation that data multiplexing is downloaded, each network that can utilize to management self institute (communication management information server (2-1～2-N) transmission traffic information request (S1-07, S1-10) of the traffic information of 4-1～4-N).The message format of traffic information request is shown in the PF-03 among Figure 12.Necessary user identifier and authentication information when the traffic information request comprises transmission source address, destination-address, packet kind (traffic information request), network identifier and the authentication of message.Received communication management information server (network identifier, user identifier and the authentication information of 2-1～2-N) of traffic information request to being comprised in the traffic information request; Compare with network identifier, user identifier and authentication information among the traffic information DB241, then return traffic information (S1-13, S1-16) to terminal 1 if authentication is no problem.The message format of traffic information is shown in the PF-04 of Figure 12.Traffic information comprises the traffic higher limit that the user has used in the transmission source address, destination-address, packet kind (traffic information), network identifier, user identifier, this network of message the accumulative total traffic and this network are permitted.Network identifier, user identifier, the accumulative total traffic and the traffic higher limit that is comprised in the traffic information used at the terminal 1 that has received traffic information, and the project of the correspondence among the 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, stored among the traffic information DB141 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, so the remaining bandwidth that terminal 1 can utilize in network 1 is 10MB.Equally, the remaining bandwidth that can utilize in the network 2 is 20MB, and the remaining bandwidth that can utilize in the network N is 30MB.Terminal 1 will ask the data of dispensing to be divided into block unit (S1-19) according to the ratio of the remaining bandwidth that can utilize of each network.For example the bandwidth of can utilizing among network 4-1,4-2, the 4-3 is respectively 10MB, 20MB, 30MB; Size in the data of asking dispensing is under the situation of 120MB; To network 4-1,4-2,4-3, the size of the piece of terminal 1 request msg dispensing is respectively 20MB, 40MB, 60MB.The size terminal 1 pair of data communication information DB145 afterwards that calculates the data block that should in each network 4, provide and deliver upgrades.In the renewal of data communications DB, the pairing Data Receiving of each network address is at first distributed at terminal 1, employed Data Receiving address when this Data Receiving address is terminal 1 reception data.Then, according to each network of confirming by network identifier, the receiver address that Updates Information, BOB(beginning of block) numbering and block end numbering.Data distribution is carried out with packet unit, because packet has fixing size, through big or small divided by packet with block size, can confirm data necessary bag number and BOB(beginning of block) numbering and block end numbering.Then, send data to data distribution server 3 and cut apart the request of sending (S1-22), these data are cut apart in the request of transmission and are contained employed information when data communications DB145 upgrades.Data are cut apart the formation of sending the PF-05 among the message format employing Figure 12 that asks.Data information request comprises transmission source address, destination-address, packet kind (data are cut apart the request of transmission), the data identifier of specified data, the tabulation of network identifier, the tabulation of Data Receiving address, the tabulation of BOB(beginning of block) numbering and the tabulation of block end numbering of message.Network identifier, Data Receiving address, BOB(beginning of block) numbering, these 4 projects of block end numbering become 1 group, the Data Receiving address and the block size at employed network, terminal 1 when being used for the specified data block dispensing.1 has received data distribution server 3 that data cut apart the request of transmission according to network and block size by terminal 1 appointment from the terminal, and the beginning data are cut apart transmission.Data distribution server 3 does not have the network interface corresponding with each network, cuts apart the request of transmission by the specified Data Receiving address of each network but can distribute by data to each data block, can specify the network that send data block.
Then, explain according to network condition and the action of situation that the size of data block is adjusted again.Fig. 6 is first kind of situation, in this example, judging because of particular network under the former thereby obvious time-consuming situation of the transmission data block that terminal 1 is asked such as congested, the data block of sending through this network is carried out processed compressed.Step S2-01 among Fig. 6 is identical with step S1-01 to S1-22 among Fig. 5 to step S2-22.In step S2-22, having received data cuts apart the data distribution server of request and numbers computing block big or small according to the BOB(beginning of block) numbering of the appointment of each network with block end.Block size deducts on duty after the BOB(beginning of block) numbering with block end numbering and obtains with the packet size.The packet size is known value corresponding to each network, for example usually uses the size of 128 bytes as packet in the moving body net of mobile phone etc.After calculating block size, data distribution server 3 is obtained the actual effect communication bandwidth of each network with reference to network state information DB341.The information relevant with the state of network can be come regular update through the network performance tools for measurement of PING, Traceroute etc.The concrete example of network state information DB341 is shown in figure 14.In the example of Figure 14; N network is the state that can utilize, stored among the network state information DB341 each network the 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 predesignates, and can not change along with the variation of network condition.Data distribution server 3 through using the block size that has calculated divided by the actual effect communication bandwidth, sends time necessary thereby calculate data block to each network.Then, transmitting time and the limit transmitting time to the data block that calculates compares.In result relatively is that the data block transmitting time has exceeded under the situation (S2-25) of limit transmitting time, and the data distribution server calculates the data block transmitting time the compression of this network applicable data again.For example, the data block transmitting time in the network 2 is 330 seconds, is estimating through compression to cut down under the situation of 10% data volume, and the data block transmitting time after calculating again is 297 seconds, and this value is (S2-28) below the limit transmitting time.If data distribution server 3 is judged as through compression and in limit transmitting time, can sends data block; Thereby then calculate BOB(beginning of block) numbering and the block end numbering that makes new advances divided by the packet size, and BOB(beginning of block) numbering, block end numbering and the compress mode of the record corresponding with this network (record) among the data communication information DB345 are upgraded with the data block after the compression.Employed algorithm when compress mode is represented data compression, the normally used algorithm of specifying zip, rar etc. usually.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 tabulation of the tabulation of tabulation, the compress mode of tabulation, the data distribution address of transmission source address, destination-address, the packet kind (data compression notice) of message, the data identifier that is used for specified data, network identifier, the BOB(beginning of block) numbering that calculates again and the tabulation that block end is numbered.The terminal 1 that the has received the data compression notice corresponding record among the communication information DB145 that Updates Information is for the dispensing of data is prepared.Sent the data compression notice data distribution server 3 beginning data cut apart transmission (S2-34).
Then, use Fig. 7 that second kind of situation is described.In this example; Under the obvious time-consuming situation of transmission of the data block of being asked at the former thereby terminal 1 of judging congested grade because of particular network; Data block to sending through this network is carried out processed compressed; But only can not tackle the congested of network, also need utilize other network to carry out the transmission of data block through processed compressed.Step S3-01 among Fig. 7 is identical with step S2-01 to S2-25 among Fig. 6 to step S3-25.In step S3-28, attempt shortening the data block transmitting time, but under second kind of situation, the data block transmitting time that is suitable for after compressing still goes beyond the limit of transmitting time through the data compression identical with Fig. 6.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.At first, initial in having produced the network that exceeds the data block transmitting time, long-pending through actual effect communication bandwidth and limit transmitting time, calculate the largest block size that can send in this network.Then; In step S3-22; Cut apart the request of sending from the data of being sent and be appointed as the block size that sends through this network and deduct the largest block size that to send through this network, calculate the size of the remaining data block that can not send through this network by terminal 1.This remaining data block is called the piece that exceeds in this network.3 pairs of data distribution servers exceed piece and cut apart, exceed piece to send 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 that is used to explain again partitioning algorithm.Figure 15 shows terminal 1 and has asked to send the state of the data block of 50MB respectively through network 1, network 2, network 3, network 4.Because it is congested that network 2 takes place, maximum also only can send 50KBPS and 300 seconds amassing are the data of 15MB, therefore has the piece that exceeds of 35MB.With the exceeding piece and send of network 2 time via other network, 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 the network 1 is 300MB (350-50), and the data block that can send in the network 3,4 size is 600MB (650-50).Then, according to exceeding piece recently the cutting apart of 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 on the data block size that should send originally through network 1, network 3, network 4, calculate the data block size that makes new advances once more, and the communication information DB345 (S3-31) that Updates Information.Then, send data to terminal 1 and cut apart the transmission notice, the data block size (S3-34) that notice calculates once more.Data are cut apart the formation that the message format that sends notice adopts the PF-07 among Figure 12.Data compression notice comprises that the transmission source address, destination-address, packet kind (data cut apart send notice) of message, the data identifier that is used for specified data, expression are based on the tabulation of the tabulation of the tabulation of the operation species of the update method of the database of content of announcement, network identifier, Data Receiving address, the BOB(beginning of block) numbering that calculates again and the tabulation of block end numbering.Operation species is divided into " renewal " or " appending " these two kinds of values, and under news more, terminal 1 is rewritten as new value (S3-37) with the already present record of data communications DB145.The data distribution server 3 beginning data of the update processing of the data block that is through with size are cut apart transmission (S3-40).
Then, the processing that wrong situation has taken place in the data transmission is described.Fig. 8 is the message sequence of redispatching and handling that when data-bag lost has taken place, has carried out data.The process that receives data from the data distribution server (S4-01) detects data-bag lost (S4-04) at terminal 1.Terminal 1 retrieval network state information DB143 detects communication and delays minimum network (S4-07).Delay minimum network through communication and ask to carry out redispatching of data, can make the data needed time minimization of redispatching.The data requests of redispatching are sent to data distribution server 3 in terminal 1, and notification data employed network (S4-10) when redispatching.The formation of the PF-08 among Figure 12 is adopted in the data request of redispatching.The data request of redispatching comprise message transmission source address, destination-address, packet kind (redispatching request of data), be used for the data identifier of specified data, employed network of network identifier when specific data is redispatched, Data Receiving address, ask the block number redispatched.From the terminal 1 received the data request of redispatching data distribution server 3 return the data block (S4-13) of being asked to the terminal via the network of appointment.
Then, use Fig. 9, the fault processing when in network, breaking down during to communication describes.Data distribution server 3 detects in the cutting apart in the delivery process of data (S5-01) fault (S5-04) has taken place in certain network.For the transmission that makes predetermined data block of sending through this network that fault has taken place is accomplished, data distribution server 3 is distinguished the data block of having sent in this network and the data block of not transmission.Then, data block of sending and the S3-31 of Fig. 7 are not same, cut apart according to the situation of utilizing of network, so that send via other network again.Particularly, in the network that fault has taken place, after the size that calculates the data block of not sending, 3 pairs of data distribution servers do not send piece to be cut apart, and does not send piece so that send this via the network outside the network that fault has taken place.So that the impartial mode of the surplus 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.To not sending data block when cutting apart again; Because other network has been assigned with the transmission of data block separately and has handled; Data are separately sent well afoot; Therefore the size of data block is not calculated again, distributed to each network as the data block different with already present data block.When terminal 1 transmission data were cut apart the transmission notice, such processing can be appointed as operation species " appending " (S5-10) at data distribution server 3.Received data cut apart send notice terminal 1 when data communication information DB145 is upgraded; Data are cut apart BOB(beginning of block) numbering and the block end numbering that is comprised in the transmission notice, be appended to as new projects and utilize on this network identifier and the determined record of data identifier.Its result, this record of data communications DB145 has kept the group that the BOB(beginning of block) more than 2 is numbered and block end is numbered.Having carried out data distribution server 3 after the reallocation of data block proceeds data and cuts apart to send and handle (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 makes message sink circulation beginning (step F 1-04) in when starting (step F 1-01), receives from the network interface (message of 10-1～10-N).In step F 1-07, judge that the message that is received is the data message from data distribution server 3.Message receiving is under the situation of data message, advances to step F 1-28, to the all-network that can utilize with the terminal 1 (communication management information server (2-1～2-N) transmission traffic information request of 4-1～4-N) is connected.In step F 1-10, receiving under the situation of traffic information from communication management information server 2, advance to step F 1-31, judge whether that (2-1～2-N) has received traffic information from all communication management information servers.From all communication management information servers (2-1～2-N) received under the situation of traffic information; Advance to step F 1-34; After the data of downloaded object being divided into block unit according to the traffic; Advance to step F 1-37, refer to data distribution server 3 transmission data partitions and ask.In step F 1-13, receive under the situation of data compression notice, advance to step F 1-40, the information of store compressed mode in data communications DB145 from data distribution server 3.In step F 1-16, cut apart under the situation of sending notice having received data from data distribution server 3, advance to step F 1-43, judgment data cuts apart whether the operation species of sending in the notice is " appending ".If operation species is not " appending " but " renewals " then advances to step F 1-46, rewrite renewal to numbering by the BOB(beginning of block) numbering of this record of data identifier and network identifier appointment and block end.If operation species is that " appending " then advances to step F 1-52, to this record addition BOB(beginning of block) numbering and block end numbering.In step F 1-19, detect under the situation of data-bag lost, advance to step F 1-49, retrieval network state information DB143, designated communication is delayed minimum network and is sent the packet request of redispatching to data distribution server 3.Message sink circulates in close a terminal (step F 1-22) at 1 o'clock and finishes (step F 1-25).Through above-mentioned processing, terminal 1 has realized send processing the cutting apart of data of specific data block size based on traffic information.
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) when starting makes message sink circulation beginning (step F 2-04), receives the message from network interface 30.In step F 2-07, judge whether received message is data information request.In the message that receives is under the situation of data information request, advances to step F 2-25, sends the data message corresponding with data identifier to terminal 1.In step F 2-10, be that data are cut apart under the situation of the request of transmission in the message that receives, advance to step F 2-28, judge whether the transmitting time of the piece that ask at the terminal is below the limit transmitting time of each network.Being under the situation below the limit transmitting time, advance to step F 2-43, begin to carry out data and cut apart transmission.Exceeded in the transmitting time of the piece that exists the terminal to ask under the situation of network of limit transmitting time, advanced to step F 2-31, judged whether the transmitting time that has been suitable for the piece after the compression is below the limit transmitting time of each network.If limit transmitting time with the next step F 2-46 that advances to, is sent the data compression notice to the terminal.If exist the transmitting time be suitable for the piece after the compression to exceed under the situation of network of limit transmitting time, advance to step F 2-34, be divided into block unit according to will the provide and deliver data of object of network conditions.Dividing method is identical with step S3-31 among Fig. 7.Then, advance to step F 2-49, send data to terminal 1 and cut apart the transmission notice.At this moment, operation species is set at " renewal ".In step F 2-13, under the situation that has received the data request of redispatching from terminal 1, advance to step F 2-37, carry out the data processing of redispatching via terminal 1 specified network.In step F 1-16, detect under the situation of network failure, advance to step F 2-40, should be divided into block unit by the data of the network dispensing that fault has taken place.Dividing method is identical with step S5-07 among Fig. 9.Then, advance to step F 2-52, send data to terminal 1 and cut apart the transmission notice.At this moment, operation species is set at " appending ".Message sink circulates in (step F 3-19) end (step F 3-22) when closing data distribution server 3.Through above-mentioned processing, data distribution server 3 has been realized flexible correspondence the cutting apart to send and handle of the data of utilizing situation of network.
Industrial applicibility
As stated; In data distributing system of the present invention; Can make user's the utilizing situation the two averages out of traffic information and network; And, can be applicable to the cognitive radio to be communication system and application service representative, that utilize a plurality of various network through the cutting apart dispensing and can shorten the required time of data distribution of data.
Claims (36)
1. a communication terminal is connected with external device (ED) via a plurality of networks, has:
Network interface communicates through above-mentioned network; And
Control part, the peak volume of being allowed separately according to the accumulative total traffic and the above-mentioned a plurality of networks of expression of expression above-mentioned a plurality of networks traffic of having used separately poor calculated the residue traffic that above-mentioned a plurality of network can utilize separately,
Above-mentioned control part is according to the piece of partition data recently of the above-mentioned residue traffic, and generates data and cut apart the request of transmission, and these data are cut apart and sent the request indication and send this divided data piece to each network of correspondence,
Above-mentioned network interface sends above-mentioned data to above-mentioned external device (ED) cuts apart the request of transmission.
2. communication terminal as claimed in claim 1 is characterized in that,
Have memory, this memory stores has the traffic information database, and said traffic information database keeps the above-mentioned accumulative total traffic and above-mentioned traffic maximum.
3. communication terminal as claimed in claim 1 is characterized in that,
Above-mentioned network interface is for having more than 2.
4. communication terminal as claimed in claim 1 is characterized in that,
Above-mentioned communication terminal is connected with management devices through above-mentioned network,
Carrying out under the situation of the processing of said external device data download, obtaining the above-mentioned a plurality of network above-mentioned accumulative total traffic and above-mentioned traffic maximum separately from above-mentioned management devices.
5. communication terminal as claimed in claim 1 is characterized in that,
Above-mentioned data are cut apart the request of transmission and are comprised the data identifier that is used for recognition data, the group that is used to discern each network of network identifier and above-mentioned data block.
6. a communication terminal is connected with external device (ED) via a plurality of networks, comprising:
Network interface communicates through above-mentioned network; And
Control part is used to control this network interface,
Above-mentioned control part detects under the situation of garble in the transmission from the said external device; Detect the minimum network of communication delay in above-mentioned a plurality of network; Generate the data request of redispatching, the request of redispatching of these data is indicated through the minimum network of this communication delay and is sent once more data.
7. communication terminal as claimed in claim 6 is characterized in that,
The request of redispatching of above-mentioned data comprises the data identifier that is used for recognition data, with the minimum corresponding network identifier of above-mentioned network of above-mentioned communication delay and the block number that is used to confirm the data of redispatching.
8. communication terminal as claimed in claim 6 is characterized in that,
Possess memory, this memory stores has the network state information database, and said network state information database is kept for the network identifier of recognition network and the communication delay of network,
Above-mentioned control part is retrieved above-mentioned network state information database, and detects the minimum network of above-mentioned communication delay.
9. communication terminal as claimed in claim 6 is characterized in that,
Above-mentioned network interface has more than 2.
10. a server connects via a plurality of Networks and Communications terminal, has:
Network interface communicates through above-mentioned network; And
Control part is used to control above-mentioned network interface,
Above-mentioned control part is controlled above-mentioned network interface; So that the data of the BOB(beginning of block) numbering of the data block after the tabulation and the data of will provide and deliver that receive the data identifier that comprises the data that are used for discerning the dispensing object from above-mentioned terminal, be used to discern some network identifiers of above-mentioned a plurality of networks are divided into piece and the tabulation of block end numbering are cut apart under the situation of the request of transmission, cut apart the request of transmission to the specified data block of providing and delivering by each network of above-mentioned network identifier appointment according to these data.
11. server as claimed in claim 10 is characterized in that,
Possess memory, this memory stores has the data communications database, and this data communications database keeps the tabulation of above-mentioned data identifier, above-mentioned network identifier and the BOB(beginning of block) numbering and the block end numbering of above-mentioned data block.
12. server as claimed in claim 11 is characterized in that,
Employed Data Receiving address when above-mentioned data communications database also possesses above-mentioned communication terminal and receives data,
Above-mentioned control part uses above-mentioned Data Receiving address to confirm above-mentioned network.
13. server as claimed in claim 11 is characterized in that,
Above-mentioned memory also possesses the network state information database; Said network state information database keeps the peaked limit transmitting time of the communication delay of the actual effect communication bandwidth of above-mentioned network identifier, above-mentioned network, above-mentioned network and the call duration time that expression utilizes above-mentioned network
Above-mentioned control part is cut apart when sending request receiving above-mentioned data; Cut apart the transmitting time that the size of the above-mentioned data block that is comprised in the request of sending is come the calculated data piece divided by above-mentioned actual effect communication bandwidth to each above-mentioned network with above-mentioned data; The transmitting time of more above-mentioned data block and above-mentioned limit transmitting time; Under the situation of above-mentioned data block transmitting time, carry out data compression than above-mentioned limit transmitting time length; Under the situation of the above-mentioned data block transmitting time after the data compression than above-mentioned limit transmitting time weak point, generate the data compression notice, the data block after above-mentioned communication terminal sends above-mentioned data compression is notified in this data compression.
14. server as claimed in claim 13 is characterized in that,
The tabulation of the data identifier that comprises the data after being used for confirming to compress, the tabulation that is used for the network of network identifier of the data after definite transmission is compressed, compress mode, the BOB(beginning of block) numbering of the above-mentioned data block after the data compression and the tabulation that block end is numbered are notified in above-mentioned data compression.
15. server as claimed in claim 13 is characterized in that,
The data block transmitting time of above-mentioned control part after data compression is suitable for is than under the long situation of above-mentioned limit transmitting time; Calculate the maximum data block size that can send in the above-mentioned network according to amassing of above-mentioned actual effect communication bandwidth and above-mentioned limit transmitting time; Cut apart the above-mentioned data block size that is comprised the request of transmission from above-mentioned data and deduct above-mentioned maximum data block size; Thereby calculate and exceed the data block size in the above-mentioned network; In the network below above-mentioned data block transmitting time is above-mentioned limit transmitting time; Difference according to above-mentioned maximum data block size and above-mentioned data block size is calculated the remaining data block size in the above-mentioned network, according to recently cutting apart of above-mentioned remaining data block size of the above-mentioned data block size that exceeds, carries out the adjustment again of data block size.
16. server as claimed in claim 13 is characterized in that,
Above-mentionedly exceed the cutting apart of data block size so that the surplus of the size of data that can send in each network becomes impartial mode cuts apart.
17. server as claimed in claim 15 is characterized in that,
Above-mentioned control part is controlled to after the adjustment again of above-mentioned data block size and sends data to above-mentioned communication terminal and cuts apart and send notice, and these data are cut apart and sent the tabulation that notice comprises data identifier, network identifier tabulation and adjusted again BOB(beginning of block) numbering and block end numbering.
18. server as claimed in claim 17 is characterized in that,
Above-mentioned control part is when detecting network failure through above-mentioned network interface; With the data block of not sending in the above-mentioned network that fault takes place according to recently the cutting apart of the remaining data block size of the network outside the above-mentioned network that fault takes place, thereby carry out the adjustment again of data block size.
19. the data communications method in the communication terminal, this communication terminal is connected with external device (ED) via a plurality of networks,
The control part that above-mentioned communication terminal has the network interface that communicates through above-mentioned network and controls this network interface,
Said control part is controlled as follows:
The peak volume of being allowed separately according to the accumulative total traffic of expression above-mentioned a plurality of networks traffic of having used separately and the above-mentioned a plurality of networks of expression poor calculated the residue traffic that above-mentioned a plurality of network can utilize separately,
According to the piece of partition data recently of the above-mentioned residue traffic,
Generate data and cut apart the request of transmission, these data are cut apart to send asks indication to send this divided data piece to each network of correspondence,
Send above-mentioned data to above-mentioned external device (ED) and cut apart the request of transmission.
20. data communications method as claimed in claim 19 is characterized in that,
Above-mentioned communication terminal has memory, and this memory stores has the traffic information database, and said traffic information database keeps the above-mentioned accumulative total traffic and above-mentioned traffic maximum.
21. data communications method as claimed in claim 19 is characterized in that,
Above-mentioned network interface is for having more than 2.
22. data communications method as claimed in claim 19 is characterized in that,
Above-mentioned communication terminal is connected with management devices through above-mentioned network,
Above-mentioned communication terminal is carrying out under the situation of the processing of said external device data download, obtains the above-mentioned a plurality of network above-mentioned accumulative total traffic and above-mentioned traffic maximum separately from above-mentioned management devices.
23. data communications method as claimed in claim 19 is characterized in that,
Above-mentioned data are cut apart the request of transmission and are comprised the data identifier that is used for recognition data, the group that is used to discern each network of network identifier and above-mentioned data block.
24. the data communications method in the communication terminal, this communication terminal is connected with external device (ED) via a plurality of networks,
The control part that above-mentioned communication terminal has the network interface that communicates through above-mentioned network and controls this network interface,
Above-mentioned control part detects under the situation of garble in the transmission from the said external device; Detect the minimum network of communication delay in above-mentioned a plurality of network; Generate the data request of redispatching, the request of redispatching of these data is indicated through the minimum network of this communication delay and is sent once more data.
25. data communications method as claimed in claim 24 is characterized in that,
The request of redispatching of above-mentioned data comprises the data identifier that is used for recognition data, with the minimum corresponding network identifier of above-mentioned network of above-mentioned communication delay and the block number that is used to confirm the data of redispatching.
26. data communications method as claimed in claim 24 is characterized in that,
Above-mentioned communication terminal possesses memory, and this memory stores has the network state information database, and said network state information database is kept for the network identifier of recognition network and the communication delay of network,
Above-mentioned control part is retrieved above-mentioned network state information database, and detects the minimum network of above-mentioned communication delay.
27. data communications method as claimed in claim 24 is characterized in that,
Above-mentioned network interface is for having more than 2.
28. the data communications method in the server, this server connects via a plurality of Networks and Communications terminal,
The control part that above-mentioned server has the network interface that communicates through above-mentioned network and controls above-mentioned network interface,
Above-mentioned control part is controlled above-mentioned network interface; So that the data of the BOB(beginning of block) numbering of the data block after the tabulation and the data of will provide and deliver that receive the data identifier that comprises the data that are used for discerning the dispensing object from above-mentioned terminal, be used to discern some network identifiers of above-mentioned a plurality of networks are divided into piece and the tabulation of block end numbering are cut apart under the situation of the request of transmission, cut apart the request of transmission to the specified data block of providing and delivering by each network of above-mentioned network identifier appointment according to these data.
29. data communications method as claimed in claim 28 is characterized in that,
Above-mentioned communication terminal has memory, and this memory stores has the data communications database, and this data communications database keeps the tabulation of above-mentioned data identifier, above-mentioned network identifier and the BOB(beginning of block) numbering and the block end numbering of above-mentioned data block.
30. data communications method as claimed in claim 29 is characterized in that,
Employed Data Receiving address when above-mentioned data communications database also possesses above-mentioned communication terminal and receives data,
Above-mentioned control part uses above-mentioned Data Receiving address to confirm above-mentioned network.
31. data communications method as claimed in claim 29 is characterized in that,
Above-mentioned memory also possesses the network state information database; Said network state information database keeps the peaked limit transmitting time of the communication delay of the actual effect communication bandwidth of above-mentioned network identifier, above-mentioned network, above-mentioned network and the call duration time that expression utilizes above-mentioned network
Above-mentioned control part is cut apart when sending request receiving above-mentioned data; Cut apart the transmitting time that the size of the above-mentioned data block that is comprised in the request of sending is come the calculated data piece divided by above-mentioned actual effect communication bandwidth to each above-mentioned network with above-mentioned data; The transmitting time of more above-mentioned data block and above-mentioned limit transmitting time; Under the situation of above-mentioned data block transmitting time, carry out data compression than above-mentioned limit transmitting time length; Under the situation of the above-mentioned data block transmitting time after the data compression than above-mentioned limit transmitting time weak point, generate the data compression notice, the data block after above-mentioned communication terminal sends above-mentioned data compression is notified in this data compression.
32. data communications method as claimed in claim 29 is characterized in that,
The tabulation of the data identifier that comprises the data after being used for confirming to compress, the tabulation that is used for the network of network identifier of the data after definite transmission is compressed, compress mode, the BOB(beginning of block) numbering of the above-mentioned data block after the data compression and the tabulation that block end is numbered are notified in above-mentioned data compression.
33. data communications method as claimed in claim 29 is characterized in that,
The data block transmitting time of above-mentioned control part after data compression is suitable for is than under the long situation of above-mentioned limit transmitting time; Calculate the maximum data block size that can send in the above-mentioned network according to amassing of above-mentioned actual effect communication bandwidth and above-mentioned limit transmitting time; Cut apart the above-mentioned data block size that is comprised the request of transmission from above-mentioned data and deduct above-mentioned maximum data block size; Thereby calculate and exceed the data block size in the above-mentioned network; In the network below above-mentioned data block transmitting time is above-mentioned limit transmitting time; Difference according to above-mentioned maximum data block size and above-mentioned data block size is calculated the remaining data block size in the above-mentioned network, according to recently cutting apart of above-mentioned remaining data block size of the above-mentioned data block size that exceeds, carries out the adjustment again of data block size.
34. data communications method as claimed in claim 31 is characterized in that,
Above-mentionedly exceed the cutting apart of data block size so that the surplus of the size of data that can send in each network becomes impartial mode cuts apart.
35. data communications method as claimed in claim 34 is characterized in that,
Above-mentioned control part is controlled to after the adjustment again of above-mentioned data block size and sends data to above-mentioned communication terminal and cuts apart and send notice, and these data are cut apart and sent the tabulation that notice comprises data identifier, network identifier tabulation and adjusted again BOB(beginning of block) numbering and block end numbering.
36. data communications method as claimed in claim 36 is characterized in that,
Above-mentioned control part is when detecting network failure through above-mentioned network interface; With the data block of not sending in the above-mentioned network that fault takes place according to recently the cutting apart of the remaining data block size of the network outside the above-mentioned network that fault takes place, thereby carry out the adjustment again of data block size.
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| CN201010292871.7A CN102413514B (en) | 2010-09-20 | 2010-09-20 | Data distribution device and data distribution system |
| JP2011194468A JP2012065314A (en) | 2010-09-20 | 2011-09-07 | Data delivery device and data delivery system |
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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 |
| 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 |
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| JP2012065314A (en) | 2012-03-29 |
| CN102413514B (en) | 2014-12-03 |
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