CN103259623A - Data transmission method and data transmission device - Google Patents
Data transmission method and data transmission device Download PDFInfo
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- CN103259623A CN103259623A CN2013101323265A CN201310132326A CN103259623A CN 103259623 A CN103259623 A CN 103259623A CN 2013101323265 A CN2013101323265 A CN 2013101323265A CN 201310132326 A CN201310132326 A CN 201310132326A CN 103259623 A CN103259623 A CN 103259623A
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Abstract
The invention discloses a data transmission method and a data transmission device. The data transmission method comprises the following steps: communication data sent by each Femto base station in a first wired IP network are received by an intermediate gateway; the communication data in the first wired IP network and received by the intermediate gateway are analyzed by the intermediate gateway individually and then corresponding valid data are extracted; and all the extracted valid data are converged and packaged in a unified mode by the intermediate mode and then are delivered to a designated Femto gateway located in a second wired IP network. According to the data transmission method and the data transmission device, the intermediate gateway is located at a position covered by both the first wired IP network and the second wired IP network, and the problems that the number of channels for interconnection and interworking among different networks is small, the transmission quality of communication between network entities in two different networks is low and transmission quality requirements of high IP back-transmission networks can not be met are solved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of data transmission method and device.
Background technology
(Internet Protocol IP) changes trend, and base station IPization has become a kind of trend in the moving communicating field in the face of Internet protocol.But the IP transmission is the transmission technology means of non real-time, and is not suitable in traditional voice service field the transmission of real-Time Speech Signals.At transmitting real-Time Speech Signals with IP, a kind of technological means of generally acknowledging in the industry is to adopt the IP special line of high bandwidth to carry the real-time voice business at present, guarantees this real-time of speech business with bigger redundancy bandwidth.
At present, because radio communication operator and wire communication operator is different, the return network of femtocell (Femto) base station is extremely complicated, even the situation of cross operator network service can appear, so the return network quality of Femto base station depends on the quality of wire communication carrier network and the situation that interconnects between the cross operator network fully.In the actual state, the communication quality that belongs between two network elements of same wire communication carrier network is in general relatively good, and by comparison, the communication quality of cross operator network worsens 50% possibly.
Consult shown in Figure 1, the passage that interconnects of supposing two wired IP network (network A and network B) is built up in the C city, and the Femto base station is built up in the network A in D city, the Femto gateway is built up in the network B in D city, if when according to standard agreement the communication data of Femto base station being transferred to the Femto gateway so, the communication data of the Femto base station network A from the D city must be routed to the network A in C city, be routed to the passage that interconnects that is positioned at the C city again, be routed to then in the network B in C city, be routed to the Femto gateway place in the network B in D city again.
At present in the network architecture of Femto base station, the passage that interconnects between the heterogeneous networks is less, and the communication transmission quality between the network entity in two heterogeneous networks is low, can not satisfy the higher transmission quality requirements of IP return network.
Summary of the invention
The embodiment of the invention provides a kind of data transmission method and device, less in order to solve in the prior art passage that interconnects between the heterogeneous networks, communication transmission quality between the network entity in two heterogeneous networks is low, can not satisfy the problem of the higher transmission quality requirements of IP return network.
The embodiment of the invention provides a kind of data transmission method, comprising:
Middle gateway receives the communication data that each the femtocell Femto base station in first wired internet protocol IP network sends;
Each communication data from described first wired IP network that the gateway butt joint is received in the middle of described is analyzed respectively, extracts corresponding valid data;
Gateway converges each valid data that extracts and unifies and encapsulates in the middle of described, transmit it to the appointment Femto gateway that is arranged in second wired IP network, wherein, described mid-level net closes covering place that repeats that is positioned at described first wired IP network and described second wired IP network.
The embodiment of the invention provides a kind of data transmission device, comprising:
Receiver module is for the communication data of each the femtocell Femto base station transmission that receives first wired internet protocol IP network;
Extraction module is used for each communication data from described first wired IP network that receives is analyzed respectively, extracts corresponding valid data;
Transport module, encapsulate for each valid data that extracts being converged and unifying, transmit it to the appointment Femto gateway that is arranged in second wired IP network, wherein, this device is positioned at covering place that repeats of described first wired IP network and described second wired IP network.
The embodiment of the invention is by being positioned at the middle gateway that repeats covering place of first wired IP network and second wired IP network, after will converging from each communication data in above-mentioned first wired IP network, transfer to the appointment Femto gateway that is arranged in second wired IP network, carry out internetwork communication when transmission between two communication entities of two different type networks laying respectively at, reduced time-delay length, degree of jitter and drop probabilities, promoted the internetwork communication transmission performance, the communication transmission quality that has solved between two communication entities that lay respectively in two different type networks is lower, can't satisfy the problem of the higher transmission quality requirements of IP return network, and after gateway converges the data of a plurality of Femto base station in the middle of above-mentioned, communicate with specifying the Femto gateway by this centre gateway is unified, reduce sporadic data and handled the overhead that brings, and can reduce the communication peer-entities number of Femto gateway.
Description of drawings
Fig. 1 is the network topological diagram of the Femto framework in the standard agreement;
The data transmission method flow chart that Fig. 2 designs for the embodiment of the invention;
Fig. 3 is the network architecture diagram of transfer of data example in the embodiment of the invention;
Fig. 4 is embodiment of the invention Data Link Map in actual applications;
The data transmission device schematic diagram that Fig. 5 designs for the embodiment of the invention.
Embodiment
The invention provides a kind of data transmission method and device, in the return network of Femto base station, increase a middle gateway that converges forwarding, this centre gateway is as Femto base station and the bridge that is connected of specifying the Femto gateway, can improve the return network quality that many IP network are striden in the Femto base station, thereby high-quality voice service is provided, and the Femto networking mode of simple and fast.
Below in conjunction with description of drawings the preferred embodiments of the present invention.
The embodiment of the invention has designed a kind of data transmission method, consults shown in Figure 2ly, comprises as follows:
Step 201: middle gateway receives the communication data that each the Femto base station in first wired internet protocol IP network sends.
Step 202: each communication data from above-mentioned first wired IP network that middle gateway butt joint is received is analyzed respectively, extracts corresponding valid data.
Preferably, middle gateway can be removed the heading in each communication data and redundant field respectively, extracts corresponding effectively field and link identification information, as corresponding valid data.
Then, middle gateway is arranged corresponding effectively field and link identification information according to the reception of each communication data order, and unifies the encapsulated message head for each effective field and link identification information after arranging.
In general, RTP (Real-time Transport Protocol, the RTP) packet in above-mentioned effective field communication data that to be the Femto base station send to middle gateway.
Step 203: middle gateway converges the valid data that extract and unifies and encapsulates, transmit it to the appointment Femto gateway that is arranged in second wired IP network, this mid-level net closes covering place that repeats that is positioned at above-mentioned first wired IP network and above-mentioned second wired IP network.
Preferably, the communication data that any one Femto base station sends in first wired IP network that middle gateway receives is that above-mentioned any one Femto base station is determining that this locality sends when the communication transmission quality between the above-mentioned Femto gateway all is lower than setting threshold.In this case, the communication peer-entities can be selected according to network condition in the Femto base station, be that the Femto base station can directly select the appointment Femto gateway in second wired IP network to communicate as the communication peer-entities, after also can will converging from the communication data of same type I P network by middle gateway, be sent to above-mentioned Femto gateway again.Above-mentioned network condition can be that the Femto base station is to transmission delay length and the degree of jitter of above-mentioned Femto gateway.
Transfer of data after middle gateway will be unified to encapsulate namely also comprises after the step 203 to above-mentioned Femto gateway:
Middle gateway receives the feedback data of the data after core net encapsulates at described unification by above-mentioned Femto gateway;
The feedback data that the gateway butt joint is received in the middle of above-mentioned is resolved and is split, and the feedback data correspondence after splitting is forwarded to corresponding Femto base station.
Like this, in the above-described embodiments, the Femto gateway not only needs to converge transmits the data that belong to the Femto base station, also needs to converge the data that forwarding belongs to middle gateway.
Consult shown in Figure 3, suppose that wired IP network A and wired IP network B are two networks of different type, in these two networks some Femto base station is arranged respectively, the Femto gateway is arranged in wired IP network A, and middle gateway is arranged on covering place that repeats of above-mentioned two networks.The flow process that the Femto gateway is inserted in Femto base station among Fig. 3 can be divided into following two situations:
First kind of situation: the Femto gateway can directly be inserted in the Femto base station that is arranged in wired IP network A.
Second kind of situation: when being arranged in the Femto base station access Femto gateway of wired IP network B, need to detect this Femto base station earlier to the communication transmission quality between the Femto gateway, if this communication transmission quality reaches the setting index, then directly insert the Femto gateway, otherwise, insert the Femto gateway by middle gateway.
In second kind of situation, Femto base station among general wired IP network B is all relatively poor to the communication transmission quality between the Femto gateway, therefore, middle gateway can converge the communication data from all the Femto base stations among wired IP network B, is transmitted to the Femto gateway then.The Femto gateway receive by middle gateway send converge after data after, the data after this is converged are carried out corresponding analysis, the data after will analyzing again are transmitted to core net, and receive the feedback data that core net sends, and this feedback data is transmitted to the centre gateway.Middle gateway receives the feedback data from the Femto gateway, it is split, and the feedback data after will splitting is transmitted to corresponding Femto base station, for finishing establishment of connection between Femto base station and the Femto gateway.
In above-described embodiment, the preferable set-up mode of the position of middle gateway is:
According to the network topology structure of wired IP network A and wired IP network B, gateway in the middle of overlapping covering place of these two networks arranges namely can either be connected to wired IP network A, and the position that can be connected to wired IP network B again arranges middle gateway.
The more excellent implementation of the embodiment of the invention is described in the practical application below in conjunction with Fig. 4.
Consult shown in Figure 4ly, the Femto gateway is arranged in wired IP network A, and Femto base station A, Femto base station B and Femto base station C are in wired IP network B, and Femto base station D is in wired IP network A.The IP address of Femto base station A is IPA, and User Data Protocol (user datagram protocol, UDP) port is portA; The IP address of Femto base station B is IPB, and udp port is portB; The IP address of Femto base station C is IPC, and udp port is portC; The IP address of Femto base station D is IPD, and udp port is portD; The IP address of middle gateway is IPMID, and the IP address of Femto gateway is IPGU.
Link is designated 1 between Femto base station A and the middle gateway, link is designated 2 between Femto base station B and the middle gateway, link is designated 3 between Femto base station C and the middle gateway, between middle gateway and the Femto gateway link be designated link between 4, Femto base station D and the Femto gateway be designated 5.
Middle gateway receives the communication data of Femto base station A, Femto base station B and Femto base station C transmission.
The form of the communication data of transmission is as follows on the link 1 between Femto base station A and the middle gateway:
Table 1
| Source?IP=IPA,?Dest?IP=IPMID,?... | IP |
| Source?Port,Dest?Port=portA | UDP |
| The RTP packet | RTP |
The form of the communication data of transmission is as follows on the link 2 between Femto base station B and the middle gateway:
Table 2
| Source?IP=IPB,Dest?IP=IPMID,... | IP |
| Source?Port,Dest?Port=portB | UDP |
| The RTP packet | RTP |
The form of the communication data of transmission is as follows on the link 3 between Femto base station C and the middle gateway:
Table 3
| Source?IP=IPC,Dest?IP=IPMID,... | IP |
| Source?Port,Dest?Port=portC | UDP |
| The RTP packet | RTP |
Middle gateway extracts the valid data in the communication data of above-mentioned 3 Femto base stations, these valid data comprise effective word section (being the RTP packet) and link identification information (being marking head), and according to the form in the table 4 valid data that extract are converged and unify the encapsulation, the data after will encapsulating then send to the Femto gateway by link 4.The form of the communication data of transmission is as follows on the link 4 between middle gateway and the Femto gateway:
Table 4
Because the form of the communication data that middle gateway sends to the Femto gateway is the form in the table 4, therefore, the feedback data that the Femto gateway sends to middle gateway adopts also is form in the table 4.
Middle gateway splits feedback data and be transmitted to three Femto base stations among wired IP network B, and in this process, middle gateway is determined destination address according to the marking head in the feedback data.Middle gateway determines that according to the DestPort in the marking head of the feedback data after splitting the address of corresponding Femto base station is destination address when the feedback data that sends to the Femto base station after splitting.
In the above-mentioned table 1-table 4, Source IP represents source IP address, and Dest IP represents purpose IP address, and SourcePort represents source port, and Dest Port represents destination interface.By above-mentioned table 1-table 4 as can be seen, middle gateway has reduced the data total amount that the Femto gateway receives and handles by the convergence process, has promoted the efficient of transfer of data, has saved system resource.
Based on unified mentality of designing, the embodiment of the invention has also designed a kind of data transmission device.Consult shown in Figure 5ly, this device comprises:
Preferably, the communication data from any one Femto base station transmission in described first wired IP network that above-mentioned receiver module 501 receives is that above-mentioned any one Femto base station sends when the communication transmission quality between the above-mentioned Femto gateway all is lower than setting threshold at definite this device.
In the practical application, said extracted module 502, concrete being used for removes heading and the redundant field of each communication data respectively, extracts corresponding effectively field and link identification information, as corresponding valid data.
Further, said extracted module 502, the concrete reception order that is used for according to each communication data is arranged corresponding effectively field and link identification information; And unify the encapsulated message head for each effective field and link identification information after arranging.
Realtime transmission protocol RTP packet in above-mentioned effective field communication data that to be the Femto base station send to this device.
Preferably, above-mentioned data transmission device also comprises feedback module 504, is used for:
Transfer of data after above-mentioned transport module 503 will be unified to encapsulate by above-mentioned Femto gateway, receives the feedback data of the data after core net encapsulates at above-mentioned unification to above-mentioned Femto gateway; And the feedback data that receives resolved and split, the feedback data correspondence after splitting is forwarded to corresponding Femto base station.
Said apparatus be with method flow one to one, do not repeat them here.
The embodiment of the invention is by being positioned at the middle gateway that repeats covering place of first wired IP network and second wired IP network, after will converging from each communication data in above-mentioned first wired IP network, transfer to the appointment Femto gateway that is arranged in second wired IP network, carry out internetwork communication when transmission between two communication entities of two different type networks laying respectively at, reduced time-delay length, degree of jitter and drop probabilities, promoted the internetwork communication transmission performance, the communication transmission quality that has solved between two communication entities that lay respectively in two different type networks is lower, can't satisfy the problem of the higher transmission quality requirements of IP return network, and after gateway converges the data of a plurality of Femto base station in the middle of above-mentioned, communicate with the Femto gateway by this centre gateway is unified, reduce sporadic data and handled the overhead that brings, and can reduce the communication peer-entities number of Femto gateway.Above-described embodiment does not have to change the network architecture of existing Femto yet, and is therefore irrelevant with concrete communication standard, only relates to transmission means, so can solve the problem of the difficulty that interconnects between two wired IP network quickly and easily.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make and carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the embodiment of the invention and not break away from the spirit and scope of the embodiment of the invention.Like this, if these of the embodiment of the invention are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. a data transmission method is characterized in that, comprising:
Middle gateway receives the communication data that each the femtocell Femto base station in first wired internet protocol IP network sends;
Each communication data from described first wired IP network that the gateway butt joint is received in the middle of described is analyzed respectively, extracts corresponding valid data;
Gateway converges each valid data that extracts and unifies and encapsulates in the middle of described, transmit it to the appointment Femto gateway that is arranged in second wired IP network, wherein, described mid-level net closes covering place that repeats that is positioned at described first wired IP network and described second wired IP network.
2. the method for claim 1, it is characterized in that, the communication data from any one Femto base station in described first wired IP network that gateway receives in the middle of described is that described any one Femto base station is determining that this locality sends when the communication transmission quality between the described Femto gateway all is lower than setting threshold.
3. the method for claim 1 is characterized in that, each communication data from described first wired IP network that described middle gateway butt joint is received is analyzed respectively, extracts corresponding valid data, specifically comprises:
Gateway is removed the heading in each communication data and redundant field respectively in the middle of described, extracts corresponding effectively field and link identification information, as corresponding valid data.
4. method as claimed in claim 3 is characterized in that, described middle gateway converges each valid data that extracts and unifies encapsulation, specifically comprises:
Gateway is arranged corresponding effectively field and link identification information according to the reception order of each communication data in the middle of described;
For each effective field and link identification information after arranging are unified the encapsulated message head.
5. method as claimed in claim 3 is characterized in that, the realtime transmission protocol RTP packet in described effective field communication data that to be the Femto base station send to middle gateway.
6. as each described method among the claim 1-5, it is characterized in that the transfer of data after described middle gateway will be unified to encapsulate also comprises to described Femto gateway:
Gateway receives the feedback data of the data after core net encapsulates at described unification by described Femto gateway in the middle of described;
The feedback data that the gateway butt joint is received in the middle of described is resolved and is split, and the feedback data correspondence after splitting is forwarded to corresponding Femto base station.
7. a data transmission device is characterized in that, comprising:
Receiver module is for the communication data of each the femtocell Femto base station transmission that receives first wired internet protocol IP network;
Extraction module is used for each communication data from described first wired IP network that receives is analyzed respectively, extracts corresponding valid data;
Transport module, encapsulate for each valid data that extracts being converged and unifying, transmit it to the appointment Femto gateway that is arranged in second wired IP network, wherein, this device is positioned at covering place that repeats of described first wired IP network and described second wired IP network.
8. device as claimed in claim 7, it is characterized in that, the communication data from any one Femto base station transmission in described first wired IP network that described receiver module receives is that described any one Femto base station sends when the communication transmission quality between the described Femto gateway all is lower than setting threshold at definite this device.
9. device as claimed in claim 7 is characterized in that, described extraction module, and concrete being used for removes heading and the redundant field of each communication data respectively, extracts corresponding effectively field and link identification information, as corresponding valid data.
10. device as claimed in claim 9 is characterized in that, described extraction module, and the concrete reception order that is used for according to each communication data is arranged corresponding effectively field and link identification information; And unify the encapsulated message head for each effective field and link identification information after arranging.
11. device as claimed in claim 9 is characterized in that, the realtime transmission protocol RTP packet in described effective field communication data that to be the Femto base station send to this device.
12. as each described device among the claim 7-11, it is characterized in that, also comprise being used for feedback module:
Transfer of data after described transport module will be unified to encapsulate by described Femto gateway, receives the feedback data of the data after core net encapsulates at described unification to described Femto gateway; And the feedback data that receives resolved and split, the feedback data correspondence after splitting is forwarded to corresponding Femto base station.
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| CN103945452A (en) * | 2014-04-30 | 2014-07-23 | 中国科学技术大学 | Data transmission method under distributed mobile management architecture |
| CN110557387A (en) * | 2019-08-29 | 2019-12-10 | 浙江大搜车软件技术有限公司 | cross-network equipment communication method, device, system, server and readable storage medium |
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Application publication date: 20130821 |