CN106211238A - Data transmission method and device, terminal - Google Patents

Abstract

The open a kind of data transmission method of the present invention and device, terminal, belong to communication technical field.The method includes: obtain at least two public data network PDN link identification, the PDN link that each PDN link identification is set up with core net EPC equipment for instruction；According to each PDN link identification at least two PDN link identification, obtain a chain circuit transmission time delay, obtaining at least two chain circuit transmission time delay, each chain circuit transmission time delay transmits the time delay of packet for instruction by the network equipment of corresponding PDN link with destination address；By the PDN link that propagation delay time is minimum, sending packet to the network equipment of destination address, the present invention solves the problem that the load equilibrium of PDN link is poor, has reached to improve the effect of load equilibrium.The present invention loads for balanced link.

Description

Data transmission method and device, terminal

Technical field

The present invention relates to communication technical field, particularly to a kind of data transmission method and device, terminal.

Background technology

Along with the development of communication technology, user's use increasingly frequency to terminals such as smart mobile phone, panel computer, computers Numerous, the service of communication network can be enjoyed by terminal.Terminal is by (English: Evolved Packet Core with core net； It is called for short: the public data network that EPC) equipment is set up is (English: Public Data Network；It is called for short: PDN) link realizes and net The data transmission of network equipment.Illustratively, terminal will need the packet sent to be sent to EPC equipment by PDN link, and EPC sets Standby according to the destination address in packet, packet is transmitted to the corresponding network equipment.

In correlation technique, terminal can be set up multiple for transmitting data to the network equipment of destination address with EPC equipment PDN link, all packets between terminal and the network equipment of destination address can use in the plurality of PDN link Individual PDN link transmission.

During realizing the present invention, inventor finds that correlation technique at least there is problems in that

All packets between terminal and the network equipment of destination address in correlation technique use a PDN link to pass Defeated, therefore, the load of this PDN link is relatively big, and the load of other PDN links in the plurality of PDN link is less, causes this The load equilibrium of multiple PDN links is poor.

Summary of the invention

The problem poor in order to solve the load equilibrium of multiple PDN link, the present invention provides a kind of data transmission method And device, terminal.Described technical scheme is as follows:

First aspect, it is provided that a kind of data transmission method, described method includes:

Obtaining at least two public data network PDN link identification, each described PDN link identification is for instruction and core net The PDN link that EPC equipment is set up；

According to each PDN link identification in described at least two PDN link identification, obtain a chain circuit transmission time delay, Obtaining at least two chain circuit transmission time delay, each described chain circuit transmission time delay is for indicating by corresponding PDN link and purpose The time delay of the network equipment transmission packet of address；

By the PDN link that propagation delay time is minimum, send packet to the network equipment of described destination address.

Second aspect, it is provided that a kind of data transmission device, described device includes:

First acquisition module, is used for obtaining at least two public data network PDN link identification, each described PDN chain road sign Know the PDN link set up for instruction with core net EPC equipment；

Second acquisition module, for according to each PDN link identification in described at least two PDN link identification, obtains One chain circuit transmission time delay, obtains at least two chain circuit transmission time delay, and each described chain circuit transmission time delay is for indicating by phase The time delay of the network equipment transmission packet of the PDN link answered and destination address；

First sending module, for the PDN link minimum by propagation delay time, the network equipment to described destination address is sent out Send packet.

The third aspect, it is provided that a kind of terminal, described terminal includes: the data transmission device described in second aspect.

The technical scheme that the present invention provides has the benefit that

The data transmission method of present invention offer and device, terminal, by obtaining at least two PDN link identification, according to Each PDN link identification at least two PDN link identification, obtains a chain circuit transmission time delay, obtains at least two link Propagation delay time, by the PDN link that propagation delay time is minimum, sends packet to the network equipment of destination address.Owing to leading to The network equipment crossing the minimum PDN chain road direction destination address of propagation delay time sends packet, therefore, the load of multiple PDN links Differ less, solve the problem that the load equilibrium of multiple PDN link is poor, reached to improve the effect of load equilibrium.

It should be appreciated that it is only exemplary that above general description and details hereinafter describe, can not be limited this Invention.

Accompanying drawing explanation

For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings Accompanying drawing.

Fig. 1 is a kind of enforcement scene graph involved by each embodiment of the present invention；

Fig. 2 is the method flow diagram of a kind of data transmission method that the embodiment of the present invention provides；

Fig. 3 is the method flow diagram of the another kind of data transmission method that the embodiment of the present invention provides；

Fig. 4 is the method flow diagram of another data transmission method that the embodiment of the present invention provides；

Fig. 5 is the block diagram of a kind of data transmission device that the embodiment of the present invention provides；

Fig. 6 is the block diagram of the another kind of data transmission that the embodiment of the present invention provides.

Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the present invention Example, and for explaining the principle of the present invention together with description.

Detailed description of the invention

In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing the present invention made into One step ground describes in detail, it is clear that described embodiment is only some embodiments of the present invention rather than whole enforcement Example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise All other embodiments, broadly fall into the scope of protection of the invention.

Refer to Fig. 1, it illustrates a kind of enforcement scene graph involved by each embodiment of the present invention, see Fig. 1, this is real Execute scene to include: terminal 01, EPC equipment and the network equipment 03.

Wherein, terminal 01 can be smart mobile phone, panel computer etc..

EPC equipment can be switch, router etc., and terminal 01 can set up at least two PDN link with EPC equipment, And the data being sent to the network equipment 03 being needed to be sent to EPC equipment by this at least two PDN link, EPC equipment is permissible These data are transmitted to the network equipment 03；Wherein, EPC equipment may include that EPC equipment 021 and EPC equipment 022, EPC equipment 021 and EPC equipment 022 can be that terminal 01 provides different carrier networks, and such as, EPC equipment 021 can be UNICOM EPC equipment, this EPC equipment 021 can be that terminal 01 provides UNICOM's network, and EPC equipment 022 can be the EPC equipment of movement, should EPC equipment 022 can be that terminal 01 provides mobile network.When terminal 01 and EPC equipment 021 and EPC equipment 022 set up one respectively During individual PDN link, the EPC at EPC equipment 021 place can be terminal 01 distribute between a network interconnection agreement (English: Intemet Protocol；It is called for short: IP) address sends the source address of data, EPC equipment as terminal 01 to the network equipment 03 The EPC at 022 place can be the source address that terminal 01 distributes that an IP address sends data as terminal 01 to the network equipment 03, These two source addresses can be different；Illustratively, as it is shown in figure 1, the network at EPC equipment 021 place be EPC1, terminal 01 can be with EPC equipment 021 sets up PDN link a, and the network at EPC equipment 022 place is EPC2, terminal 01 can be set up with EPC equipment 022 PDN link b, terminal 01 can send data by PDN link a to the network equipment 03, it is also possible to by PDN link b to network Equipment 03 sends data.

The network equipment 03 can be in the Internet, and (English: the equipment in Intemet), this network equipment 03 can be clothes Business device, it can be that terminal 01 provides various network service, and in this implementation environment, the address of the network equipment 03 is 01, terminal Send the destination address of data.

Seeing Fig. 1, this implementation environment sets up a PDN chain respectively with terminal 01 and EPC equipment 021 and EPC equipment 022 Road, and the equipment in the Internet be 1 as a example by illustrate, in actual application, terminal 01 can be set up with EPC equipment 021 At least two PDN link, can also set up at least two PDN link with EPC equipment 022, and this is not construed as limiting by this implementation environment.

Refer to Fig. 2, it illustrates the method flow diagram of a kind of data transmission method that the embodiment of the present invention provides, this reality Execute example to be applied to the terminal 01 shown in Fig. 1 is illustrated with this data transmission method.Seeing Fig. 2, the method includes:

Step 201, acquisition at least two public data network PDN link identification, each PDN link identification is for instruction and core The PDN link that heart net EPC equipment is set up.

Step 202, according to each PDN link identification at least two PDN link identification, when obtaining a link transmission Prolonging, obtain at least two chain circuit transmission time delay, each chain circuit transmission time delay is for indicating by corresponding PDN link and destination The time delay of the network equipment transmission packet of location.

Step 203, by the minimum PDN link of propagation delay time, send packet to the network equipment of destination address.

In sum, the data transmission method that the embodiment of the present invention provides, by obtaining at least PDN link identification, according to Each PDN link identification at least two PDN link identification, obtains a chain circuit transmission time delay, obtains at least two link Propagation delay time, by the PDN link that propagation delay time is minimum, sends packet to the network equipment of destination address.Owing to leading to The network equipment crossing the minimum PDN chain road direction destination address of propagation delay time sends packet, therefore, the load of multiple PDN links Differ less, solve the problem that the load equilibrium of multiple PDN link is poor, reached to improve the effect of load equilibrium.

In the embodiment of the present invention, terminal can determine, by the network delay table that inquiry is preset, the PDN that propagation delay time is minimum Link, it is also possible to determine the PDN link that propagation delay time is minimum by the way of detection.Propagation delay time minimum is determined according to terminal The difference of PDN link, the present invention is described in detail below to divide two embodiments.

Refer to Fig. 3, it illustrates the method flow diagram of the another kind of data transmission method that the embodiment of the present invention provides, this Embodiment is applied in implementation environment shown in Fig. 1 with this data transmission method, and the network delay preset by inquiry with terminal Table determines that the PDN link of propagation delay time minimum is illustrated.Seeing Fig. 3, the method may include that

Step 301, set up at least two PDN link by different carrier networks and EPC equipment.

Wherein, operator can include UNICOM, movement etc., and carrier network can include UNICOM's network, mobile network etc..

According to the implementation environment shown in Fig. 1, the EPC equipment that different carrier networks is corresponding is different, therefore, passes through Different carrier networks is set up at least two PDN link and be that is to say and set up at least two with different EPC equipment from EPC equipment PDN link.

The embodiment of the present invention illustrates as a example by setting up two PDN links, as it is shown in figure 1, EPC equipment 021 can be right Should be in UNICOM's network, EPC equipment 022 can correspond to mobile network, and terminal 01 can set up a PDN chain with EPC equipment 021 Road, this PDN link can be PDN link a, sets up a PDN link with EPC equipment 022, and this PDN link can be PDN link b。

It should be noted that the embodiment of the present invention is to carry out as a example by terminal sets up a PDN link with an EPC equipment Illustrating, in actual application, terminal can set up multiple PDN link with an EPC equipment, and terminal and EPC equipment set up PDN chain The process that implements on road is referred to correlation technique, and the embodiment of the present invention does not repeats them here.

Step 302, the PDN link identification of each PDN link determined at least two PDN link, obtain at least two PDN link identification.

After terminal and Provider Equipment set up at least two PDN link, it may be determined that each at least two PDN link The PDN link identification of PDN link, obtains at least two PDN link identification.

Alternatively, terminal can distribute a PDN chain road sign for this PDN link after each PDN link establishment success Know, thus obtain at least two PDN link identification.

Illustratively, as it is shown in figure 1, terminal 01 is after setting up PDN link a with EPC equipment 021, it can be this PDN link A distributes a PDN link identification, and this PDN link identification can be ID-A, and terminal 01 is setting up PDN link b with EPC equipment 021 Afterwards, can be that this PDN link b distributes a PDN link identification, this PDN link identification can be ID-B.

It should be noted that after terminal determines the PDN link identification of each PDN link, this link identification can be carried out Storage, such as, terminal can be provided for store PDN link identification memory module, terminal can will obtain at least two Individual PDN link identification is stored in this memory module, and this is not construed as limiting by the embodiment of the present invention.

Step 303, acquisition at least two PDN link identification.

Terminal, when needing to send data to the network equipment of destination address, can obtain at least two PDN link identification. Wherein, the PDN link that each PDN link identification is set up with EPC equipment for instruction.At least two PDN that terminal obtains Link identification can be that PDN link a, ID-B that ID-A and ID-B, ID-A set up for instruction and EPC equipment 021 are used for indicating The PDN link b set up with EPC equipment 022.

Alternatively, terminal can read at least two PDN link identification from the memory module of self, realizes to this extremely The acquisition of few two PDN link identifications, this is not construed as limiting by the embodiment of the present invention.

Step 304, according to each PDN link identification at least two PDN link identification, the network delay that inquiry is preset Table, network delay table is for indicating the corresponding relation of PDN link identification and chain circuit transmission time delay.

Terminal can store network delay table, and in network delay table, record has PDN link identification and chain circuit transmission time delay Corresponding relation.After terminal gets at least two PDN link identification, can each according at least two PDN link identification PDN link identification, the network delay table that inquiry is preset, obtain the chain circuit transmission time delay that each PDN link identification is corresponding.

Wherein, network delay table can be the network delay table for a destination address, it is also possible to be for multiple mesh The network delay table of address, when the network delay table that network delay table is for a destination address, terminal can be deposited Storing up multiple network delay table, the corresponding destination address of each network delay table, when network delay table is for multiple destinatioies During the network delay table of location, terminal stores a network delay table, this network delay table also records on purpose location.

Illustratively, it is assumed that destination address is IP1, then network delay table for this destination address IP1 can be such as table 1 below institute Show:

Table 1

PDN link identification	Chain circuit transmission time delay
		ID-A	T1
ID-B	T2
		ID-C	T3
ID-D	T4
		……	……

Wherein, the PDN link of ID-A instruction can be PDN link a, and the PDN link of ID-B instruction can be PDN link b, The PDN link of ID-C instruction can be PDN link c, and the PDN link of ID-D instruction can be PDN link d.See table 1, ID-A Corresponding chain circuit transmission time delay be the chain circuit transmission time delay that T1, ID-B are corresponding be the chain circuit transmission time delay that T2, ID-C are corresponding be T3, Chain circuit transmission time delay corresponding for ID-D is T4.That is to say, sent the link transmission of data by PDN link a to destination address IP1 Time delay is T1, and the chain circuit transmission time delay sending data to destination address IP1 by PDN link b is T2, by PDN link c to mesh Address ip 1 to send the chain circuit transmission time delay of data be T3, the link sending data to destination address IP1 by PDN link d passes Defeated time delay is T4.Terminal directly can inquire about table 1 according to ID-A and ID-B obtained in step 303, obtains corresponding link and passes Defeated time delay.

Illustratively, it is assumed that destination address includes: IP1, IP2 and IP3, then for the network delay table of these three destination addresses Can be as shown in table 2 below:

Table 2

Wherein, the PDN link of ID-A instruction can be PDN link a, and the PDN link of ID-B instruction can be PDN link b, The PDN link of ID-C instruction can be PDN link c, and the PDN link of ID-D instruction can be PDN link d, the PDN of ID-E instruction Link can be PDN link e, and the PDN link of ID-F instruction can be PDN link f.Seeing table 2, destination address IP1 is corresponding PDN link identification includes: ID-A, ID-B, ID-C, ID-D etc., and chain circuit transmission time delay corresponding for ID-A is the chain that T1, ID-B are corresponding Road propagation delay time be the chain circuit transmission time delay that T2, ID-C are corresponding be the chain circuit transmission time delay that T3, ID-D are corresponding be T4；Destination address PDN link identification corresponding for IP2 includes: ID-A, ID-E etc., and chain circuit transmission time delay corresponding for ID-A is the chain that T5, ID-E are corresponding Road propagation delay time is T6；PDN link identification corresponding for destination address IP3 includes: ID-D, ID-F, ID-B etc., the chain that ID-D is corresponding Road propagation delay time be the chain circuit transmission time delay that T7, ID-F are corresponding be the chain circuit transmission time delay that T8, ID-B are corresponding be T9.That is to say, The chain circuit transmission time delay sending data to destination address IP1 by PDN link a is T1, by PDN link b to destination address IP1 The chain circuit transmission time delay sending data is T2, and the chain circuit transmission time delay sending data to destination address IP1 by PDN link c is T3, the chain circuit transmission time delay sending data to destination address IP1 by PDN link d is T4；By PDN link a to destination address It is T5 that IP2 sends the chain circuit transmission time delay of data, is sent the chain circuit transmission time delay of data to destination address IP2 by PDN link e For T6, the like.Assuming that terminal is currently needed for sending the destination address of data is IP1, then terminal can be according to IP1 and step ID-A and ID-B obtained in rapid 303 inquires about table 1, obtains corresponding chain circuit transmission time delay.

Pre-building it should be noted that above-mentioned network delay table is terminal and stores, terminal can be built at PDN link After standing successfully, the chain circuit transmission time delay of detection PDN link, time then according to PDN link identification and the link transmission of PDN link Prolong, set up network delay table.

Illustratively, set up by terminal and illustrate as a example by the network delay table shown in table 1.Terminal can pass through PDN link Each PDN link in a, PDN link b, PDN link c and PDN link d sends n to the network equipment of destination address IP1 respectively Individual network delay detection bag, and receive the network equipment of destination address by each PDN link send for this n network time Prolong n network echo probe bag of detection bag, according to receiving the moment of n network echo probe bag and sending n network delay In the moment of detection bag, determine chain circuit transmission time delay.Wherein, n is the integer more than or equal to 2, and network delay detection bag is permissible (English: Packet Internet Groper for Internet groper device；It is called for short: PING) bag, network echo probe bag can be Reply (English: reply) bag.

Such as, terminal sends n PING bag by PDN link a to the network equipment of destination address IP1, is receiving i-th During individual reply bag, terminal, according to receiving the moment of i-th reply bag and sending the moment of i-th PING bag, determines PDN link The chain circuit transmission time delay DELAYai, i=[1, n] of a, then terminal is calculated PDN according to the time-delay calculation formula of PDN link a The chain circuit transmission time delay T1 of link a.Wherein, the time-delay calculation formula of PDN link a is:

$T1=\left(\underset{i=1}{\overset{n}{\mathrm{\Σ}}}DELAYai\right)/n$

For another example, terminal sends n PING bag by PDN link b to the network equipment of destination address IP1, is receiving During i-th reply bag, terminal, according to receiving the moment of i-th reply bag and sending the moment of i-th PING bag, determines PDN The chain circuit transmission time delay DELAYbi, i=[1, n] of link b, then terminal calculates according to the time-delay calculation formula of PDN link b Chain circuit transmission time delay T2 to PDN link b.Wherein, the time-delay calculation formula of PDN link b is:

$T2=\left(\underset{i=1}{\overset{n}{\mathrm{\Σ}}}DELAYbi\right)/n$

In like manner, terminal may determine that the chain circuit transmission time delay T4 of chain circuit transmission time delay T3 and PDN link d of PDN link c.

After terminal determines the chain circuit transmission time delay of each PDN link, can be according to the PDN link of at least two PDN link Mark and the chain circuit transmission time delay of each PDN link, generate network delay table as shown in table 1.It should be noted that the present invention Embodiment illustrates as a example by setting up the network delay table shown in table 1, the process of setting up of the network delay table shown in table 2 and this Similar, the embodiment of the present invention does not repeats them here.

Step 305, according to Query Result, obtain each PDN link identification at least two PDN link identification corresponding Chain circuit transmission time delay, obtains at least two chain circuit transmission time delay.

The network delay table that terminal is preset according to the inquiry of at least two PDN link identification, it may be determined that each PDN chain road sign Knowing corresponding chain circuit transmission time delay, thus obtain at least two chain circuit transmission time delay, terminal obtains this at least two link transmission Time delay.

Illustratively, terminal obtains chain circuit transmission time delay T1, according to PDN chain road sign according to PDN link identification ID-A inquiry table 1 Knowing ID-B inquiry table 1 and obtain chain circuit transmission time delay T2, terminal obtains T1 and T2.

Step 306, by the minimum PDN link of propagation delay time, send packet to the network equipment of destination address.

After terminal obtains at least two chain circuit transmission time delay, biography can be determined according to this at least two chain circuit transmission time delay The PDN link that defeated time delay is minimum, and by the PDN link of propagation delay time minimum, send data to the network equipment of destination address Bag.

Alternatively, at least two chain circuit transmission time delay can be compared by terminal, determines at least two link transmission The chain circuit transmission time delay that Shi Yanzhong is minimum.Illustratively, T1 and T2 can be compared to determine the link transmission of minimum by terminal Time delay.Assume that T1 is less than T2, then terminal determines that the PDN link of propagation delay time minimum is PDN link a, and terminal passes through PDN link a Packet is sent to the network equipment of destination address IP1.

It should be noted that in actual application, need network delay table is updated.Such as, when step 304 is inquired about When the T1 obtained is equal to T2, in order to select the PDN link that propagation delay time is minimum in PDN link a and PDN link b, need The chain circuit transmission time delay of each PDN link detected, and to update network delay table according to result of detection；For another example, by State in PDN link the most in the same time may be different, and corresponding chain circuit transmission time delay also can be different, therefore, in order to ensure own Packet can be transferred through the minimum PDN link of propagation delay time and send, terminal is at the PDN chain road direction mesh minimum by propagation delay time The network equipment of address send while packet, it is also possible to the chain circuit transmission time delay of each PDN link is detected, and Network delay table is updated according to result of detection.The embodiment of the present invention as a example by updating the network delay table shown in table 1, concrete more New process can be as shown in following step 307 to step 310.

Step 307, by a PDN link, send network delay detection bag to the network equipment of destination address, first PDN link is the PDN link of the arbitrary PDN link identification instruction at least two PDN link identification.

Terminal can pass through a PDN link, sends network delay detection bag to the network equipment of destination address, and this is first years old PDN link can be PDN link a, it is also possible to for PDN link b.

Illustratively, when a PDN link is PDN link a, terminal can be by PDN link a to destination address IP1 The network equipment send the detection of m network delay and wrap, when a PDN link is PDN link b, terminal can pass through PDN chain Road b sends m network delay detection bag to the network equipment of destination address IP1, and m is the integer more than or equal to 2, as T1 etc. When T2, m is less than n, and such as, m is equal to n/2, and when T1 is not equal to T2, m is more than n, such as, m=2n, and wherein, network delay is visited Surveying bag can be PING bag.

It should be noted that when T1 is equal to T2, m is less than n, when T1 is not equal to T2, m is more than n, so can make detection The chain circuit transmission time delay obtained is closer to physical link propagation delay time, and the embodiment of the present invention is not repeating at this.

Step 308, by a PDN link, receive the network delay respond packet that the network equipment of destination address sends.

When terminal sends network delay detection bag by the network equipment of a PDN chain road direction destination address, destination address The network equipment can send network delay respond packet by a PDN chain road direction terminal, therefore, terminal can be by first PDN link, receives the network delay respond packet that the network equipment of destination address sends.

Illustratively, when a PDN link is PDN link a, terminal can receive destination address by PDN link a M the network delay respond packet that the network equipment sends, when a PDN link is PDN link b, terminal can pass through PDN chain Road b receives m the network delay respond packet that the network equipment of destination address sends.Wherein, network delay detection bag can be Reply bag.

Step 309, basis receive the moment of network delay respond packet by a PDN link and send network delay detection In the moment of bag, determine the chain circuit transmission time delay of a PDN link.

Terminal according to being received the moment of network delay respond packet by a PDN link and can send network delay detection In the moment of bag, determine the chain circuit transmission time delay of a PDN link.

Such as, terminal according to by PDN link a receive jth reply bag moment and transmission jth PING bag time Carving, determine the chain circuit transmission time delay DELAYaj, j=[1, m] of PDN link a, then terminal updates according to the time delay of PDN link a Formula is calculated the chain circuit transmission time delay T11 of PDN link a.Wherein, the time delay more new formula of T1=DELAYa, PDN link a For:

$T11=(DELAYa*n+\underset{j=1}{\overset{m}{\mathrm{\Σ}}}DELAYaj)/(n+m)$

For another example, terminal is according to being received the moment of jth reply bag by PDN link b and sending jth PING bag In the moment, determining the chain circuit transmission time delay DELAYbj, j=[1, n] of PDN link b, then terminal is according to the time delay of PDN link b more New formula is calculated the chain circuit transmission time delay T21 of PDN link b.Wherein, the time delay of T2=DELAYb, PDN link b updates public affairs Formula is:

$T21=(DELAYb*n+\underset{j=1}{\overset{m}{\mathrm{\Σ}}}DELAYbj)/(n+m)$

In like manner, terminal may determine that chain circuit transmission time delay T31 and the PDN link d chain circuit transmission time delay T41 of PDN link c.

Step 310, according to the link transmission of the PDN link identification of at least two PDN link and at least two PDN link time Prolong, update network delay table.

After terminal determines the chain circuit transmission time delay of each PDN link at least two PDN link, can be according to each The PDN link identification of PDN link and the chain circuit transmission time delay of each PDN link, update network delay table.

Illustratively, terminal is according to the PDN link identification ID-A and chain circuit transmission time delay T11 of PDN link a, according to PDN link The PDN link identification ID-B of b and chain circuit transmission time delay T21, during according to PDN link identification ID-C and the link transmission of PDN link c Prolong T31, according to the PDN link identification ID-D and chain circuit transmission time delay T41 of PDN link d, update the network delay table shown in table 1.

Terminal updates after network delay table, network delay table after can being updated to the network delay after this renewal Table stores.Illustratively, the network delay table after the renewal that terminal is more newly obtained to table 1 can be as shown in table 3 below:

Table 3

PDN link identification	Chain circuit transmission time delay
		ID-A	T11
ID-B	T21
		ID-C	T31
ID-D	T41
		……	……

It should be noted that the embodiment of the present invention illustrates as a example by the network delay table shown in renewal table 1, table 2 institute The renewal process of the network delay table shown is similar, and the embodiment of the present invention does not repeats them here.

Also, it should be noted during setting up network delay table and updating network delay table, each determining Time time delay on PDN link, if being not received for the reply bag of certain PING bag in preset duration t, then can be pre-by this If duration t is defined as corresponding chain circuit transmission time delay.Such as, terminal is not received for kth PING bag in preset duration Reply bag, then this preset duration t is defined as the chain circuit transmission time delay that kth PING bag is corresponding by terminal, wherein, k=[1, M], the concrete value of t can be arranged according to actual needs, and such as, the t=10 second, this is not construed as limiting by the embodiment of the present invention.

Step 311, according to each PDN link identification at least two PDN link identification, inquiry update after network time Prolong table, the corresponding relation of the chain circuit transmission time delay after indicating PDN link identification and updating of the network delay table after renewal.

Such as, terminal, according to the network delay table after the renewal shown in ID-A and ID-B inquiry table 3, can obtain and ID-A The corresponding chain circuit transmission time delay after renewal is T11, and chain circuit transmission time delay renewal after corresponding with ID-B is T21.

Step 312, according to Query Result, obtain each PDN link identification at least two PDN link identification corresponding Chain circuit transmission time delay, obtains the chain circuit transmission time delay after at least two updates.

Such as, terminal, according to Query Result, obtains chain circuit transmission time delay T11 and T12 after updating.

Step 313, updated by least two after chain circuit transmission time delay in, the PDN link that propagation delay time is minimum, to mesh Address the network equipment send packet.

Assume that T12 is less than T11, then terminal determines that the PDN link of propagation delay time minimum is PDN link b, and terminal passes through PDN Link b sends packet to the network equipment of destination address IP1.

In sum, the data transmission method that the embodiment of the present invention provides, by obtaining at least PDN link identification, according to Each PDN link identification at least two PDN link identification, obtains a chain circuit transmission time delay, obtains at least two link Propagation delay time, by the PDN link that propagation delay time is minimum, sends packet to the network equipment of destination address.Owing to leading to The network equipment crossing the minimum PDN chain road direction destination address of propagation delay time sends packet, therefore, the load of multiple PDN links Differ less, solve the problem that the load equilibrium of multiple PDN link is poor, reached to improve the effect of load equilibrium.

In correlation technique, terminal can set up a PDN link with EPC equipment, owning between terminal and the network equipment Data are all by this PDN link transmission, and the load causing this PDN link is relatively big, and data transmission delay is relatively big, works as net When network dtr signal or network signal instability, the time delay of terminal access network can be caused to increase, affect data transmission bauds, The embodiment of the present invention is by setting up at least two PDN link, and the PDN chain road direction network equipment minimum by chain circuit transmission time delay is sent out Send data, reduce load and the data transmission delay of PDN link, and stability and the end of terminal transmission data can be improved The data transmission efficiency of end, extends the bandwidth of terminal.

Can run multiple network application in terminal, in correlation technique, terminal and EPC equipment set up a PDN chain simultaneously Road, this PDN link is shared in the multiple network applications simultaneously run in terminal.Such as, terminal runs 3 application simultaneously, and these are 3 years old Individual application is file download application respectively, and Online Video application and instant messaging are applied, according to the difference of practical situation, it is possible to The time delay of file download is less and the time delay of instant messaging is relatively big, if realizing this three network applications by a PDN link Transmit with the data of the network equipment, then, the first load of this PDN link is relatively big, next may result in terminal first to The network equipment send instant messaging data, after to the network equipment send file download data.

The embodiment of the present invention sends data by the PDN chain road direction network equipment that chain circuit transmission time delay is minimum, can be not Same network application distributes different PDN links and carries out data transmission.Such as, the data of file download application are at terminal and connection The ratio of the propagation delay time on PDN link that logical EPC equipment is set up is on the PDN link in the EPC equipment foundation of terminal and movement Propagation delay time is little, then the data of file download application can be transmitted by the PDN link that the EPC equipment of terminal with UNICOM is set up To the network equipment of destination address, the data of instant messaging application are on the PDN link of the EPC equipment foundation of terminal and movement Propagation delay time is less than the propagation delay time on the PDN link that terminal and the EPC equipment of UNICOM are set up, then can pass through terminal and shifting The data that instant messaging is applied by the PDN link that dynamic EPC equipment is set up transmit the network equipment to destination address.So terminal Can while by the quick-downloading file of UNICOM's network, by mobile network smooth carry out instant messaging.

Similarly, major part terminal has network sharing functionality at present, and sharing mode can include but not limited to: general string Row bus is (English: Universal Serial Bus；It is called for short: USB) sharing mode, Wireless Fidelity (English: WIreless- FIdelity；Being called for short: WIFI) sharing mode, share for Bluetooth etc., the terminal with network sharing functionality is properly termed as service eventually End, service terminal can provide shared network, and select PDN link for accessing the access terminal of this shared network, to realize connecing Enter the terminal access to the Internet.Such as, terminal A can access the Internet and have network sharing functionality, and this terminal A is the most permissible Being referred to as service terminal, terminal B can not access the Internet and terminal B can be with the shared network of access terminal A offer, then terminal B Being properly termed as access terminal, after the shared network of the offer of terminal B access terminal A, terminal B can pass through terminal A and network The terminal access the Internet of the PDN link that equipment is set up.

Refer to Fig. 4, it illustrates the method flow diagram of another data transmission method that the embodiment of the present invention provides, this Embodiment is applied in implementation environment shown in Fig. 1 be illustrated with this data transmission method.See Fig. 4, the method bag Include:

Step 401, set up at least two PDN link by different carrier networks and EPC equipment.

Step 402, the PDN link identification of each PDN link determined at least two PDN link, obtain at least two PDN link identification.

Step 403, acquisition at least two PDN link identification.

The step 301 that this step 401 to the process that implements of step 403 is referred in embodiment illustrated in fig. 3 is to step Rapid 303, the embodiment of the present invention does not repeats them here.

Step 404, the PDN link indicated by each PDN link identification at least two PDN link identification, to mesh Address the network equipment send network delay detection bag.

Assuming that at least two PDN link identification includes ID-A and ID-B, destination address is that IP1, ID-A indicate PDN link a, ID-B indicates PDN link b, then terminal is sent to the network equipment of destination address IP1 by PDN link a and PDN link b respectively Network delay detection bag.

Illustratively, terminal passes through PDN link a and PDN link b respectively when n the network of the network equipment of destination address IP1 Prolonging detection bag, n is the integer more than or equal to 2.

Step 405, the PDN link indicated by each PDN link identification, receive the network equipment transmission of destination address Network delay respond packet.

The network equipment of the PDN chain road direction destination address that terminal is indicated by each PDN link identification sends network delay After detection bag, can receive, by the PDN link of each PDN link identification instruction, the network that the network equipment of destination address sends DELAY RESPONSE bag.

Such as, when terminal passes through the network of network equipment transmission that PDN link a and PDN link b receives destination address respectively Prolong respond packet.

Step 406, by PDN link corresponding for the network delay respond packet that is initially received, be defined as propagation delay time minimum PDN link.

Such as, the network delay respond packet that terminal is firstly received is that the network equipment of destination address is sent out by PDN link a Send, then PDN link a is defined as the PDN link that propagation delay time is minimum by terminal.

Step 407, by the minimum PDN link of propagation delay time, send packet to the network equipment of destination address.

Illustratively, terminal passes through PDN link a, sends packet to the network equipment of destination address.

It should be noted that after step 405, terminal can also be according to the PDN by the instruction of each PDN link identification Link receives the moment of network delay respond packet and sends the moment of network delay detection bag, determines that each PDN link identification refers to The chain circuit transmission time delay of the PDN link shown, the link transmission of the PDN link then indicated according at least two PDN link identification Time delay, determines at least two chain circuit transmission time delay, and according to PDN link identification and corresponding chain circuit transmission time delay, sets up network The network delay table that time delay table or renewal have been set up, the specific implementation of this process is referred to embodiment illustrated in fig. 3, this Inventive embodiments does not repeats them here.

In sum, the data transmission method that the embodiment of the present invention provides, by obtaining at least PDN link identification, according to Each PDN link identification at least two PDN link identification, obtains a chain circuit transmission time delay, obtains at least two link Propagation delay time, by the PDN link that propagation delay time is minimum, sends packet to the network equipment of destination address.Owing to leading to The network equipment crossing the minimum PDN chain road direction destination address of propagation delay time sends packet, therefore, the load of multiple PDN links Differ less, solve the problem that the load equilibrium of multiple PDN link is poor, reached to improve the effect of load equilibrium.

In correlation technique, terminal can set up a PDN link with EPC equipment, owning between terminal and the network equipment Data are all by this PDN link transmission, and the load causing this PDN link is relatively big, and data transmission delay is relatively big, works as net When network dtr signal or network signal instability, the time delay of terminal access network can be caused to increase, affect data transmission bauds, The embodiment of the present invention is by setting up at least two PDN link, and the PDN chain road direction network equipment minimum by chain circuit transmission time delay is sent out Send data, reduce load and the data transmission delay of PDN link, and stability and the end of terminal transmission data can be improved The data transmission efficiency of end, extends the bandwidth of terminal.

Following for apparatus of the present invention embodiment, may be used for performing the inventive method embodiment.Real for apparatus of the present invention Execute the details not disclosed in example, refer to the inventive method embodiment.

Refer to Fig. 5, it illustrates the block diagram of a kind of data transmission device 500 that the embodiment of the present invention provides, these data Transmitting device 500 may be used for performing the data transmission method that the arbitrary illustrated embodiment of Fig. 2 to Fig. 4 provides, and sees Fig. 5, this number May include that according to transmitting device 500

First acquisition module 510, is used for obtaining at least two public data network PDN link identification, each PDN link identification The PDN link set up with core net EPC equipment for instruction；

Second acquisition module 520, for according to each PDN link identification at least two PDN link identification, obtains one Individual chain circuit transmission time delay, obtains at least two chain circuit transmission time delay, and each chain circuit transmission time delay is for indicating by corresponding PDN The time delay of the network equipment transmission packet of link and destination address；

First sending module 530, for the PDN link minimum by propagation delay time, sends out to the network equipment of destination address Send packet.

In sum, the data transmission device that the embodiment of the present invention provides, by obtaining at least PDN link identification, according to Each PDN link identification at least two PDN link identification, obtains a chain circuit transmission time delay, obtains at least two link Propagation delay time, by the PDN link that propagation delay time is minimum, sends packet to the network equipment of destination address.Owing to leading to The network equipment crossing the minimum PDN chain road direction destination address of propagation delay time sends packet, therefore, the load of multiple PDN links Differ less, solve the problem that the load equilibrium of multiple PDN link is poor, reached to improve the effect of load equilibrium.

Refer to Fig. 6, it illustrates the block diagram of the another kind of data transmission device 600 that the embodiment of the present invention provides, this number May be used for performing the data transmission method that the arbitrary illustrated embodiment of Fig. 2 to Fig. 4 provides according to transmitting device 600, see Fig. 6, should Data transmission device 600 can include but not limited to:

First acquisition module 610, is used for obtaining at least two public data network PDN link identification, each PDN link identification The PDN link set up with core net EPC equipment for instruction；

Second acquisition module 620, for according to each PDN link identification at least two PDN link identification, obtains one Individual chain circuit transmission time delay, obtains at least two chain circuit transmission time delay, and each chain circuit transmission time delay is for indicating by corresponding PDN The time delay of the network equipment transmission packet of link and destination address；

First sending module 630, for the PDN link minimum by propagation delay time, sends out to the network equipment of destination address Send packet.

Alternatively, the second acquisition module 620, it is used for:

According to each PDN link identification at least two PDN link identification, the network delay table that inquiry is preset, network Time delay table is for indicating the corresponding relation of PDN link identification and chain circuit transmission time delay；

According to Query Result, obtain the link transmission that each PDN link identification at least two PDN link identification is corresponding Time delay, obtains at least two chain circuit transmission time delay.

Alternatively, the second acquisition module 620, it is used for:

The PDN link indicated by each PDN link identification at least two PDN link identification, to destination address The network equipment sends network delay detection bag；

By the PDN link of each PDN link identification instruction, receive the network delay that the network equipment of destination address sends Respond packet；

Receive the moment of network delay respond packet according to the PDN link indicated by each PDN link identification and send net In the moment of network delay detection bag, obtain the chain circuit transmission time delay of the PDN link of each PDN link identification instruction；

During the link transmission of PDN link indicated according to each PDN link identification at least two PDN link identification Prolong, obtain at least two chain circuit transmission time delay.

Alternatively, the first sending module 630, it is used for:

By PDN link corresponding for the network delay respond packet being initially received, it is defined as the PDN chain that propagation delay time is minimum Road；

By the PDN link that propagation delay time is minimum, send packet to the network equipment of destination address.

Alternatively, please continue to refer to Fig. 6, this data transmission device 600 also includes:

Second sending module 640, for by a PDN link, sending network delay to the network equipment of destination address Detection bag, a PDN link is the PDN link of the arbitrary PDN link identification instruction at least two PDN link identification；

First receiver module 650, for by a PDN link, receiving the network that the network equipment of destination address sends DELAY RESPONSE bag；

First determines module 660, for according to moment and the transmission being received network delay respond packet by a PDN link In the moment of network delay detection bag, determine the chain circuit transmission time delay of a PDN link；

More new module 670, for the PDN link identification according at least two PDN link and the chain of at least two PDN link Road propagation delay time, updates network delay table.

Alternatively, this data transmission device 600 also includes:

Set up module 680, for setting up at least two PDN link by different carrier networks and EPC equipment；

Second determines module 690, for determining the PDN link identification of each PDN link at least two PDN link, Obtain at least two PDN link identification.

In sum, the data transmission device that the embodiment of the present invention provides, by obtaining at least PDN link identification, according to Each PDN link identification at least two PDN link identification, obtains a chain circuit transmission time delay, obtains at least two link Propagation delay time, by the PDN link that propagation delay time is minimum, sends packet to the network equipment of destination address.Owing to leading to The network equipment crossing the minimum PDN chain road direction destination address of propagation delay time sends packet, therefore, the load of multiple PDN links Differ less, solve the problem that the load equilibrium of multiple PDN link is poor, reached to improve the effect of load equilibrium.

The embodiment of the present invention additionally provides a kind of terminal, and this terminal includes the data transmission device shown in Fig. 5 or Fig. 6.

In sum, the terminal that the embodiment of the present invention provides, by obtaining at least PDN link identification, according at least two Each PDN link identification in PDN link identification, obtains a chain circuit transmission time delay, obtains at least two chain circuit transmission time delay, By the PDN link that propagation delay time is minimum, send packet to the network equipment of destination address.Owing to propagation delay time can be passed through The network equipment of minimum PDN chain road direction destination address sends packet, and therefore, the load difference of multiple PDN links is less, solves The problem that the load equilibrium of multiple PDN link of having determined is poor, has reached to improve the effect of load equilibrium.

It should be understood that the data transmission device that above-described embodiment provides is when transmitting data, only with above-mentioned each function The division of module is illustrated, and in actual application, can distribute above-mentioned functions by different function moulds as desired Block completes, and the internal structure of equipment will be divided into different functional modules, to complete all or part of merit described above Energy.It addition, the data transmission method that above-described embodiment provides belongs to same design with device embodiment, it is detailed that it implements process See embodiment of the method, repeat no more here.

One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can pass through hardware Completing, it is also possible to instruct relevant hardware by program and complete, described program can be stored in a kind of computer-readable In storage medium, storage medium mentioned above can be read only memory, disk or CD etc..

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims (10)

1. a data transmission method, it is characterised in that described method includes:

Obtaining at least two public data network PDN link identification, each described PDN link identification is for instruction and core net EPC The PDN link that equipment is set up；

According to each PDN link identification in described at least two PDN link identification, obtain a chain circuit transmission time delay, obtain At least two chain circuit transmission time delay, each described chain circuit transmission time delay is for indicating by corresponding PDN link and destination address The network equipment transmission packet time delay；

By the PDN link that propagation delay time is minimum, send packet to the network equipment of described destination address.

Method the most according to claim 1, it is characterised in that described according in described at least two PDN link identification Each PDN link identification, obtains a chain circuit transmission time delay, obtains at least two chain circuit transmission time delay, including:

According to each PDN link identification in described at least two PDN link identification, inquire about the network delay table preset, described Network delay table is for indicating the corresponding relation of PDN link identification and chain circuit transmission time delay；

According to Query Result, obtain the link transmission that each PDN link identification in described at least two PDN link identification is corresponding Time delay, obtains described at least two chain circuit transmission time delay.

Method the most according to claim 1, it is characterised in that described according in described at least two PDN link identification Each PDN link identification, obtains a chain circuit transmission time delay, obtains at least two chain circuit transmission time delay, including:

The PDN link indicated by each PDN link identification in described at least two PDN link identification, to described destination The network equipment of location sends network delay detection bag；

By the PDN link of described each PDN link identification instruction, receive the network that the network equipment of described destination address sends DELAY RESPONSE bag；

Receive the moment of network delay respond packet according to the PDN link indicated by described each PDN link identification and send net In the moment of network delay detection bag, obtain the chain circuit transmission time delay of the PDN link of described each PDN link identification instruction；

During the link transmission of PDN link indicated according to each PDN link identification in described at least two PDN link identification Prolong, obtain described at least two chain circuit transmission time delay.

Method the most according to claim 3, it is characterised in that the described PDN link minimum by propagation delay time, to described The network equipment of destination address sends packet, including:

By PDN link corresponding for the network delay respond packet being initially received, it is defined as the PDN link that propagation delay time is minimum；

By the PDN link that described propagation delay time is minimum, send packet to the network equipment of described destination address.

Method the most according to claim 2, it is characterised in that at the described PDN link minimum by propagation delay time, to institute Before stating the network equipment transmission packet of destination address, described method also includes:

By a PDN link, send network delay detection bag, a described PDN chain to the network equipment of described destination address Road is the PDN link of the arbitrary PDN link identification instruction in described at least two PDN link identification；

By a described PDN link, receive the network delay respond packet that the network equipment of described destination address sends；

According to by described oneth PDN link receive network delay respond packet moment and send network delay detection bag time Carve, determine the chain circuit transmission time delay of a described PDN link；

PDN link identification according at least two PDN link and the chain circuit transmission time delay of described at least two PDN link, update Described network delay table.

6. a data transmission device, it is characterised in that described device includes:

First acquisition module, is used for obtaining at least two public data network PDN link identification, and each described PDN link identification is used In the PDN link that instruction is set up with core net EPC equipment；

Second acquisition module, for according to each PDN link identification in described at least two PDN link identification, obtains one Chain circuit transmission time delay, obtains at least two chain circuit transmission time delay, and each described chain circuit transmission time delay is for indicating by accordingly The time delay of the network equipment transmission packet of PDN link and destination address；

First sending module, for the PDN link minimum by propagation delay time, sends number to the network equipment of described destination address According to bag.

Device the most according to claim 6, it is characterised in that described second acquisition module, is used for:

According to each PDN link identification in described at least two PDN link identification, inquire about the network delay table preset, described Network delay table is for indicating the corresponding relation of PDN link identification and chain circuit transmission time delay；

According to Query Result, obtain the link transmission that each PDN link identification in described at least two PDN link identification is corresponding Time delay, obtains described at least two chain circuit transmission time delay.

Device the most according to claim 6, it is characterised in that described second acquisition module, is used for:

The PDN link indicated by each PDN link identification in described at least two PDN link identification, to described destination The network equipment of location sends network delay detection bag；

By the PDN link of described each PDN link identification instruction, receive the network that the network equipment of described destination address sends DELAY RESPONSE bag；

Receive the moment of network delay respond packet according to the PDN link indicated by described each PDN link identification and send net In the moment of network delay detection bag, obtain the chain circuit transmission time delay of the PDN link of described each PDN link identification instruction；

During the link transmission of PDN link indicated according to each PDN link identification in described at least two PDN link identification Prolong, obtain described at least two chain circuit transmission time delay.

Device the most according to claim 8, it is characterised in that described first sending module, is used for:

By PDN link corresponding for the network delay respond packet being initially received, it is defined as the PDN link that propagation delay time is minimum；

By the PDN link that described propagation delay time is minimum, send packet to the network equipment of described destination address.

10. a terminal, it is characterised in that described terminal includes: the arbitrary described data transmission device of claim 6 to 9.