CN101431802A - Data transmission method, network node and network system - Google Patents
Data transmission method, network node and network system Download PDFInfo
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- CN101431802A CN101431802A CNA2008101770427A CN200810177042A CN101431802A CN 101431802 A CN101431802 A CN 101431802A CN A2008101770427 A CNA2008101770427 A CN A2008101770427A CN 200810177042 A CN200810177042 A CN 200810177042A CN 101431802 A CN101431802 A CN 101431802A
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Abstract
The embodiment of the invention provides a data transmission method, a network node, and a network system, where the data transmission method comprises reducing speed limit or resource limit of a second interface after determining that a first interface is a bottleneck of a user data transmission channel; said second interface is used for transmitting user data of a second node received via the first interface; scheduling user data and transmitting the same according to the reduced speed limit or resource limit of the second interface. With the technical plan provided in the embodiment of the invention, the second interface is used as the bottleneck so as to solve the problem of user fairness under bandwidth limited situation of the first interface.
Description
Technical field
The present invention relates to communication technical field, particularly data transmission method, network node and network system.
Background technology
At present, speech business shared ratio in communication system is more and more littler, and the shared ratio of data service is increasing, and therefore, the bandwidth requirement that communication system is provided is also more and more higher.The business of transmitting in the communication system mainly is divided into two big classes now: real time business and non-real-time service.In the existing communication system, generally provide priority service, real time business is set adopts higher priority,, avoid real time business to produce packet loss and metadata cache phenomenon, so that the quality of real time business is guaranteed so that real time business is preferentially sent.And, need between the user, reasonably distribute bandwidth usually for non-real-time service.
A kind of network topology structure of mobile communication system as shown in Figure 1, in this communication system, a gateway connects a plurality of base stations down, a base station provides service for a plurality of subscriber equipmenies, the passage of transmitting user data comprises two interfaces between gateway and the subscriber equipment, interface between base station and the gateway, and the interface between base station and the subscriber equipment.In communication system, the resources such as bandwidth of interface might be not enough between base station and the gateway, causes the interface between base station and the gateway to become bottleneck, promptly between base station and the gateway bandwidth of interface less than the bandwidth of the interface between base station and the subscriber equipment.
With Fig. 1 is example, at down direction, when the interface between base station and the gateway becomes bottleneck, in order to guarantee the fairness between the user, usually the scheme that adopts is that gateway carries out buffer memory to the data of each subscriber equipment, and all users is dispatched according to user's granularity according to the bandwidth of interface between base station and the gateway.
In research and practice process to prior art, the inventor finds that there is following problem in prior art:
Gateway needs bigger memory space when carrying out metadata cache and scheduling, cause wasting the storage resources of gateway and handle resource.
Summary of the invention
The embodiment of the invention provides a kind of data transmission method, network node and network system, solves the user fairness problem under the interface bandwidth limitation scene.
In view of this, the embodiment of the invention provides:
A kind of data transmission method comprises:
After determining that first interface is the bottleneck of user data transmission passage, reduce the limiting speed or the restriction resource of second interface; Described second interface is used to transmit the user data that Section Point is received by described first interface;
According to the limiting speed or the restriction resource of second interface after reducing, dispatch user data also sends.
A kind of network node comprises:
Judging unit is used to judge whether first interface is the bottleneck of user data transmission passage;
The limiting speed adjustment unit is used for the judged result according to judging unit, adjusts the limiting speed of second interface; Described second interface is used to transmit the user data that described network node is received by described first interface;
The data dispatching unit is used for the limiting speed according to adjusted second interface of described limiting speed adjustment unit, and dispatch user data also sends.
A kind of network node comprises:
Judging unit is used to judge whether first interface is the bottleneck of user data transmission passage;
Restriction resource adjustment unit is used for the judged result according to described judging unit, adjusts the restriction resource of second interface; Described second interface is used to transmit the user data that described network node is received by described first interface;
The data dispatching unit is used for the restriction resource according to adjusted second interface of described restriction resource adjustment unit, and dispatch user data also sends.
Have following beneficial effect in the technical scheme that the embodiment of the invention provides:
Limiting speed or the restriction resource of the embodiment of the invention by reducing by second interface, so that second interface becomes the bottleneck of user data transmission passage, make Section Point can utilize the limiting speed or the restriction resource of second interface, thereby can the equity dispatching user data, no longer need gateway to carry out extra operation such as metadata cache, scheduling, save the storage resources of gateway and handle resource.
Description of drawings
Fig. 1 is a kind of communication system architecture schematic diagram;
Fig. 2 is the communication system schematic diagram that the embodiment of the invention provides;
Fig. 3 is the data transmission method flow chart that the embodiment of the invention two provides;
Fig. 4 is the data transmission method flow chart that the embodiment of the invention three provides;
Fig. 5 is the data transmission method flow chart that the embodiment of the invention four provides;
Fig. 6 is the data transmission method flow chart that the embodiment of the invention five provides;
Fig. 7 is the data transmission method flow chart that the embodiment of the invention six provides;
Fig. 8 is the network node structure figure that the embodiment of the invention seven provides;
Fig. 9 is the network node structure figure that the embodiment of the invention eight provides.
Embodiment
For making the embodiment of the invention clearer, below in conjunction with accompanying drawing, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
See also Fig. 2, the communication system schematic diagram that Fig. 2 provides for the embodiment of the invention, wherein, first node can be a gateway, Section Point can be the base station, the inventor finds that downlink data transmits the following scene that transmission bottleneck may occur: when the bandwidth of first interface is not enough, cause first interface to become bottleneck by analysis.The technical scheme that the embodiment of the invention provided can solve the problem that first interface becomes bottleneck.
Embodiment one:
The embodiment of the invention one provides a kind of data transmission method, comprising: after determining that first interface is the bottleneck of user data transmission passage, reduce the limiting speed or the restriction resource of second interface; Wherein said second interface is used to transmit the user data that Section Point is received by described first interface; According to the limiting speed or the restriction resource of second interface after reducing, dispatch user data also sends.
Wherein, the limiting speed of second interface is that second interface sends the speed maximum that data allowed, and the speed of the data of second interface transmission just is no more than the limiting speed of this second interface, and the limiting speed of second interface can be a variable; The restriction resource of second interface is the maximum that second interface sends the available resources that data allowed, and the resource of the data occupancy of second interface transmission just is no more than the restriction resource of second interface; The flow target value of first interface is the Section Point expectation receives data from first interface a speed.
The embodiment of the invention is after definite first interface becomes the bottleneck of user data transmission passage, reduce the limiting speed or the restriction resource of second interface, so that second interface becomes the bottleneck of user data transmission passage, the problem that first interface is become bottleneck is transformed into second interface becomes bottleneck, so that utilize the dispatching algorithm equity dispatching user data of Section Point (such as the base station), do not need first node (such as gateway) to carry out to be the extra operations such as metadata cache, scheduling of granularity, saved the storage resources of first node and handled resource with user.
See also Fig. 3, Fig. 3 has disclosed a kind of data transmission method that the embodiment of the invention two provides, the actual flow that this method obtains first interface in judgement is during greater than the flow target value of first interface, reduce the limiting speed of second interface, make second interface become bottleneck, rely on the dispatching algorithm of Section Point to realize resource allocation, the supposition first node is a gateway in the present embodiment, Section Point is the base station, and this method specifically comprises:
A1, base station receive the user data that gateway sends by first interface.
In the present embodiment, before this step, the flow target value that sets in advance first interface is a definite value, equals the initial value of the limiting speed of second interface such as the flow target value that can set in advance first interface, is specifically as follows a certain numerical value less than first interface bandwidth.
Whether the actual flow that first interface in the one-period time is judged in A2, base station greater than the flow target value of first interface, if, carry out A3, if not, carry out A5.
Wherein, the actual flow of first interface is the total amount of data of the user data that received by first interface in this cycle time of base station.
The limiting speed of A3, reduction by second interface.
Because at the actual flow of first interface during greater than the flow target value of first interface, first interface may be the bottleneck of user data transmission passage, thereby reduce the limiting speed of second interface, be transformed into the bottleneck that second interface becomes the user data transmission passage with the problem that first interface is become user data transmission passage bottleneck.
A4, the limiting speed after obtaining second interface and reducing and the higher value among the second interface limiting speed minimum value, and as the limiting speed of second interface of dispatch user data institute basis, the limiting speed that is second interface of dispatch user data institute basis must be greater than or equal to the second interface limiting speed minimum value, low excessively with the bandwidth usage efficient that prevents second interface, execution in step A7 then.
The limiting speed of A5, second interface that raises.
Smaller value in the flow target value of A6, the limiting speed after obtaining second interface and raising and first interface, and as the limiting speed of second interface of dispatch user data institute basis.
A7, according to the limiting speed of second interface, utilize for example token bucket algorithm of fair algorithm, the user data that is received from first interface is dispatched, guaranteed the fairness of dispatch user data, and the total activation speed when requiring dispatch user data can not surpass the limiting speed of second interface.
The specific implementation of this steps A 7 is:
The base station is added token according to the limiting speed of second interface every a bit of time.Real time business for high priority adopts PQ (Priority Queuing, Priority Queues) scheduling, can adopt WFQ (Weighted fair queuing, Weighted Fair Queuing) scheduling for non-real-time service, to guarantee the fairness of dispatch user data.Concrete: whether the real time business formation of checking all high priorities earlier has user data to need to send, if there is user data to need to send, and enough tokens is arranged in the token bucket, then sends the real time business data, need consume token in the time of transmission.The all non-real-time service formations of poll are then carried out data in turn in proportion to each formation and are sent, and consume token when sending data.By above-mentioned token mechanism, realized that the total activation speed of dispatch user data is no more than the limiting speed of second interface.
The actual flow that the embodiment of the invention two obtains first interface in judgement is during greater than the flow target value of first interface, reduce the limiting speed of second interface, the problem that first interface is become bottleneck is converted into and makes second interface become bottleneck, and the base station is according to the limiting speed of second interface, can realize the equity dispatching user data, do not need gateway to carry out to be the extra operations such as metadata cache, scheduling of granularity, save the storage resources of gateway and handle resource with user.Further, if first interface does not provide priority service to real time business, can become bottleneck by making second interface, prevent the first interface packet loss, to guarantee the quality of real time business, utilize the scheduling scheme of base station in addition,, can further guarantee the quality of real time business such as to the real time business priority scheduling.
Consult Fig. 4, the embodiment of the invention three provides a kind of data transmission method, the difference part of this method and embodiment two is that the flow target value of first interface is variable in the present embodiment three, in above embodiment two, the flow target value of setting first interface is a definite value, if be provided with lowly, cause the bandwidth efficiency of first interface low, if be provided with too high, may cause first interface to become bottleneck, can not well guarantee user fairness.Whether present embodiment takes place congestedly by detecting first interface, and to change the flow target value of first interface, this method specifically comprises:
B1, base station receive the user data that gateway sends by first interface.
B2, base station detect in the one-period time first interface whether take place congested, if, carry out B3, if not, carry out B4.
The base station is detected first interface and whether congested specific implementation takes place can is in this step: whether the sequence number detection according to the packet that receives from first interface in this cycle time packet loss takes place.
B3, the flow target value of first interface is reduced by first numerical value, carry out B5.
B4, with the flow target value rising second value of first interface.Wherein, preferably, second value is much smaller than first numerical value, and is congested to cause first interface to produce with the flow target value of first interface that prevents from frequently to raise.
Whether the actual flow that first interface is judged in B5, base station greater than the flow target value of first interface, if, carry out B6, if not, carry out B8.
Wherein, the actual flow of first interface is the total amount of data of the user data that received by first interface in base station cycle time.
The limiting speed of B6, reduction by second interface.
B7, the limiting speed that obtains second interface that obtains after the reduction and the higher value among the second interface limiting speed minimum value, and as the limiting speed of second interface of dispatch user data institute basis, execution in step B10.
The limiting speed of B8, second interface that raises.
Smaller value in the flow target value of B9, the limiting speed that obtains second interface that obtains after the rising and first interface, and as the limiting speed of second interface of dispatch user data institute basis.
B10, according to the limiting speed of second interface, utilize for example token bucket algorithm of fair algorithm, the user data that is received from first interface is dispatched, guaranteed the fairness of dispatch user data, and the total activation speed when requiring dispatch user data can not surpass the limiting speed of second interface.
The actual flow that the embodiment of the invention three obtains first interface in judgement is during greater than the flow target value of first interface, reduce the limiting speed of second interface, the problem that first interface is become bottleneck is converted into and makes second interface become bottleneck, first interface no longer is the bottleneck of user data transmission passage, therefore solved the limited bandwidth problem of first interface, the base station is according to the limiting speed of second interface, can realize the equity dispatching user data, and not needing gateway to carry out with user is the metadata cache of granularity, extra operation such as scheduling is saved the storage resources of gateway and is handled resource.Further, can whether take place congestedly, change the flow target value of first interface, guarantee the bandwidth usage efficient of first interface by detecting first interface.Further, if first interface does not provide priority service to real time business, can become bottleneck by making second interface, prevent the first interface packet loss, to guarantee the quality of real time business, utilize the scheduling scheme of base station in addition,, can further guarantee the quality of real time business such as to the real time business priority scheduling.
Whether see also Fig. 5, the embodiment of the invention four, and the difference part of this method and embodiment two is: take place congestedly by detecting first interface, with the limiting speed of control break second interface, this method specifically comprises if providing a kind of data transmission method:
C1, base station receive the user data that gateway sends by first interface.
It is congested that C2, base station judge in cycle time whether first interface takes place, if, carry out C3, if not, carry out C5.
C3, the limiting speed of second interface is reduced by first step-length.
C4, the limiting speed that obtains second interface that obtains after the reduction and the higher value among the second interface limiting speed minimum value, and as the limiting speed of second interface of dispatch user data institute basis, execution in step C7.
C5, with the limiting speed of second interface second step-length that raises.
Wherein, because most non-real-time services are based on Transmission Control Protocol, and the congestion control mechanism of TCP can make the speed of first interface and the rate-matched of second interface, so second step-length needs much smaller than first step-length in this step, with the limiting speed of second interface that prevents from frequently to raise to cause the generation of first interface congested.
Smaller value in the flow target value of C6, the limiting speed that obtains second interface that obtains after the rising and first interface, and as the limiting speed of second interface of dispatch user data institute basis.
C7, base station are according to the limiting speed of second interface, utilize token bucket algorithm, the user data that is received from first interface is dispatched, guaranteed the fairness of dispatch user data, and the total activation speed when requiring dispatch user data can not surpass the limiting speed of second interface in cycle time.
The embodiment of the invention four obtains first interface in judgement and gathers around the Games-time, reduce the limiting speed of second interface, the problem that first interface is become bottleneck is converted into and makes second interface become bottleneck, making first interface no longer is the bottleneck of user data transmission passage, therefore solved the limited bandwidth problem of first interface, and the base station is according to the limiting speed of second interface, can realize the equity dispatching user data, do not need gateway to carry out to be the extra operations such as metadata cache, scheduling of granularity, save the storage resources of gateway and handle resource with user.Further, if first interface does not provide priority service to real time business, can become bottleneck by making second interface, prevent the first interface packet loss, to guarantee the quality of real time business, utilize the scheduling scheme of base station in addition,, can further guarantee the quality of real time business such as to the real time business priority scheduling.
Consult Fig. 6, the embodiment of the invention five provides a kind of data transmission method, present embodiment supposes that second interface is for eating dishes without rice or wine, the actual flow that this method obtains first interface in judgement is during greater than the flow target value of first interface, the running time-frequency resource of eating dishes without rice or wine by adjustment carries out speed limit to second interface, make second interface become bottleneck, rely on the dispatching algorithm of base station to realize resource allocation, this method specifically comprises:
D1, base station receive the user data that gateway sends by first interface.
Whether the actual flow that first interface in cycle time is judged in D2, base station greater than the flow target value of first interface, if, carry out D3, if not, carry out D5.
Wherein, the actual flow of first interface is the total amount of data of the user data that received by first interface in base station cycle time.
D3, base station reduce the restriction resource of second interface.Wherein, the restriction resource of second interface is the maximum that second interface sends the available resources that data allowed, and the resource of the data occupancy of second interface transmission just is no more than the restriction resource of second interface.
D4, base station obtain the restriction resource of second interface after the reduction and the higher value among second interface restriction resource minimum value, and the restriction resource of giving second interface as subsequent allocations, promptly distribute the restriction resource of second interface of running time-frequency resource institute basis must be greater than or equal to second interface restriction resource minimum value, low excessively with the bandwidth usage efficient that prevents second interface, execution in step D6.
D5, the base station restriction resource of second interface that raises, and guarantee that the restriction resource after this rising is not higher than the second interface running time-frequency resource, the restriction resource of second interface after the rising is the restriction resource of second interface of subsequent allocations running time-frequency resource institute basis.
D6, base station distribute running time-frequency resource according to the restriction resource of second interface to each user, are utilized as the running time-frequency resource that the user distributes, and send corresponding user data.
Certainly, the embodiment of the invention five can suppose that the flow target value of first interface is a definite value, perhaps also can change the flow target value of first interface, for example is specially: detect whether first interface takes place congested in the one-period time, if reduce the flow target value of first interface; If not, the raise flow target value of first interface.
The actual flow that the embodiment of the invention five obtains first interface in judgement is during greater than the flow target value of first interface, reduce the restriction resource of second interface, and utilize this restriction resource, each user is distributed running time-frequency resource, be utilized as the running time-frequency resource that the user distributes, send corresponding user data, with the speed of indirect restriction second interface, make second interface become the bottleneck of user data transmission passage, so solved the limited bandwidth problem of first interface.And the base station is distributed running time-frequency resource according to the restriction resource of second interface that obtains after reducing for the user, can the equity dispatching user data, do not need gateway to carry out to be the extra operations such as metadata cache, scheduling of granularity, save the storage resources of gateway and handle resource with user.Further, if first interface does not provide priority service to real time business, can become bottleneck by making second interface, prevent the first interface packet loss, to guarantee the quality of real time business, utilize the scheduling scheme of base station in addition,, can further guarantee the quality of real time business such as to the real time business priority scheduling.
Consult Fig. 7, the embodiment of the invention six provides a kind of data transmission method, present embodiment supposes that second interface is for eating dishes without rice or wine, this method obtains first interface in judgement and gathers around the Games-time, the running time-frequency resource of eating dishes without rice or wine by adjustment carries out speed limit to second interface, make second interface become bottleneck, rely on the dispatching algorithm of base station to realize resource allocation, this method specifically comprises:
E1, base station receive the user data that gateway sends by first interface.
E2, base station judge whether first interface gathers around match in cycle time, if, carry out E3, if not, carry out E5.
E3, base station reduce the restriction resource of second interface.
E4, base station obtain the restriction resource of second interface after the reduction and the higher value among second interface restriction resource minimum value, and as the restriction resource of second interface of subsequent allocations running time-frequency resource institute basis, promptly distribute the restriction resource of second interface of running time-frequency resource institute basis must be greater than or equal to second interface restriction resource minimum value, low excessively with the bandwidth usage efficient that prevents second interface, execution in step E6.
E5, the base station restriction resource of second interface that raises, and guarantee that the restriction resource after this rising is not higher than the second interface running time-frequency resource, the restriction resource of second interface after the rising is the restriction resource of second interface of subsequent allocations running time-frequency resource institute basis.
E6, base station distribute running time-frequency resource according to the restriction resource of second interface to each user, are utilized as the running time-frequency resource that the user distributes, and send corresponding user data.
The embodiment of the invention six obtains first interface in judgement and gathers around the Games-time, reduce the restriction resource of second interface, and utilize this restriction resource, each user is distributed running time-frequency resource, be utilized as the running time-frequency resource that the user distributes, send corresponding user data, with the speed of indirect restriction second interface, make second interface become the bottleneck of user data transmission passage, so solved the limited bandwidth problem of first interface.And the base station is distributed running time-frequency resource according to the restriction resource of second interface that obtains after reducing for the user, can the equity dispatching user data, do not need gateway to carry out to be the extra operations such as metadata cache, scheduling of granularity, save the storage resources of gateway and handle resource with user.Further, if first interface does not provide priority service to real time business, can become bottleneck by making second interface, prevent the first interface packet loss, to guarantee the quality of real time business, utilize the scheduling scheme of base station in addition,, can further guarantee the quality of real time business such as to the real time business priority scheduling.
Consult Fig. 8, the embodiment of the invention seven provides a kind of network node, comprising:
Judging unit 801 is used to judge whether first interface is the bottleneck of user data transmission passage;
Limiting speed adjustment unit 802 is used for the judged result according to judging unit 801, adjusts the limiting speed of second interface; Described second interface is used to transmit the user data that described network node is received by described first interface;
Wherein, judging unit 801 is when judging whether first interface is the bottleneck of user data transmission passage, can take following mode, it is congested for example to be used to judge whether first interface takes place, if, determine that first interface is the bottleneck of user data transmission passage, if not, determine that first interface is not the bottleneck of user data transmission passage; Perhaps, whether the actual flow that is used to judge first interface greater than the flow target value of first interface, if, determine that first interface is the bottleneck of user data transmission passage, if not, determine that first interface is not the bottleneck of user data transmission passage.
Limiting speed adjustment unit 802 specifically can comprise: the first limiting speed adjustment unit 8021, and the judged result that is used at judging unit 801 is after first interface is the bottleneck of user data transmission passage, reduces the limiting speed of second interface;
This network node can also comprise:
Maximum acquiring unit 804 is used to obtain the limiting speed of second interface after the first limiting speed adjustment unit 8021 reduces and the higher value among the second interface limiting speed minimum value;
Described data dispatching unit 803 is used to the higher value, dispatch user data and the transmission that utilize maximum acquiring unit 804 to be obtained.
Described limiting speed adjustment unit 802 can also comprise: the second limiting speed adjustment unit 8022, the actual flow that is used for when first interface congested or first interface not taking place be during less than the flow target value of first interface, the limiting speed of second interface that raises;
At this moment, network node can also comprise: minimum value acquiring unit 805 is used for obtaining the smaller value of the flow target value of the limiting speed of second interface after the second limiting speed adjustment unit 8022 raises and first interface;
Described data dispatching unit 803 is used for according to the smaller value that is obtained, and dispatch user data also sends.
The embodiment of the invention seven judges whether first interface becomes the bottleneck of user data transmission passage, and adjust the limiting speed of second interface according to judged result, become the bottleneck of user data transmission passage to control second interface, the problem that first interface is become bottleneck is transformed into second interface becomes bottleneck, so that utilize network node (such as the base station) equity dispatching user data, do not need gateway to carry out to be the extra operations such as metadata cache, scheduling of granularity, save the storage resources of gateway and handle resource with user.
Consult Fig. 9, the embodiment of the invention eight provides a kind of network node, comprising:
Judging unit 901 is used to judge whether first interface is the bottleneck of user data transmission passage;
Restriction resource adjustment unit 902 is used for the judged result according to described judging unit 901, adjusts the restriction resource of second interface;
Wherein, judging unit 901 can take following mode to judge whether first interface is the bottleneck of user data transmission passage, and it is congested for example to be used to judge whether first interface takes place, if determine that first interface is the bottleneck of user data transmission passage; If not, determine that first interface is not the bottleneck of user data transmission passage; Perhaps, whether the actual flow of judging first interface is greater than the flow target value of first interface, if determine that first interface is the bottleneck of user data transmission passage; If not, determine that first interface is not the bottleneck of user data transmission passage.
Restriction resource adjustment unit 902 comprises the first restriction resource adjustment unit 9021, and the judged result that is used at judging unit 901 is after first interface is the bottleneck of user data transmission passage, reduces the restriction resource of second interface.
This network node can also comprise: resource maximum acquiring unit 904 is used to obtain the restriction resource of second interface after the first restriction resource adjustment unit 9021 reduces and the higher value among second interface restriction resource minimum value; At this moment, data dispatching unit 903 is used for the higher value that obtained according to resource maximum acquiring unit 904, for the user distributes running time-frequency resource, utilizes the running time-frequency resource that is distributed to send user data.
Described restriction resource adjustment unit 902 can also comprise the second restriction resource adjustment unit 9022, the actual flow that is used for when first interface congested or first interface not taking place is during less than the flow target value of first interface, the restriction resource of described second interface that raises.
The embodiment of the invention eight judges whether first interface becomes the bottleneck of user data transmission passage, and adjust the restriction resource of second interface according to judged result, become the bottleneck of user data transmission passage to control second interface, the problem that first interface is become bottleneck is transformed into second interface becomes bottleneck, so that utilize network node (such as the base station) equity dispatching user data, do not need gateway to carry out to be the extra operations such as metadata cache, scheduling of granularity, save the storage resources of gateway and handle resource with user.
The embodiment of the invention nine provides a kind of network system, and this network system comprises as embodiment seven or the described network node of embodiment.This network system can be controlled the bottleneck that second interface becomes the user data transmission passage, the problem that first interface is become bottleneck is transformed into second interface becomes bottleneck, so that utilize network node (such as the base station) equity dispatching user data, do not need gateway to carry out to be the extra operations such as metadata cache, scheduling of granularity, save the storage resources of gateway and handle resource with user.
More than data transmission method, network node and network system that the embodiment of the invention provided are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (18)
1, a kind of data transmission method is characterized in that, comprising:
After determining that first interface is the bottleneck of user data transmission passage, reduce the limiting speed or the restriction resource of second interface; Described second interface is used to transmit the user data that Section Point is received by described first interface;
According to the limiting speed or the restriction resource of second interface after reducing, dispatch user data also sends.
2, method according to claim 1 is characterized in that:
The bottleneck that described definite first interface is the user data transmission passage comprises:
It is congested to judge whether first interface takes place, if determine that first interface is the bottleneck of user data transmission passage; Perhaps
Whether the actual flow of judging first interface is greater than the flow target value of first interface, if determine that first interface is the bottleneck of user data transmission passage.
3, method according to claim 1 is characterized in that:
Described limiting speed according to second interface after reducing, dispatch user data and transmission comprise:
Obtain the limiting speed of second interface after the reduction and the higher value among the second interface limiting speed minimum value, according to described higher value dispatch user data and send.
4, method according to claim 2 is characterized in that: the actual flow that congested or first interface does not take place when first interface also comprises during less than the flow target value of first interface:
The raise limiting speed of second interface is according to the limiting speed dispatch user data of second interface after raising and send.
5, method according to claim 4 is characterized in that:
Described limiting speed according to second interface after raising, dispatch user data and transmission comprise:
Obtain the smaller value in the flow target value of the limiting speed of second interface after the rising and first interface, according to described smaller value dispatch user data and send.
6, method according to claim 2 is characterized in that: the actual flow that congested or first interface does not take place when first interface is during less than the flow target value of first interface, and this method also comprises:
The raise restriction resource of described second interface is distributed running time-frequency resource according to the restriction resource of second interface after raising for the user;
Utilize the running time-frequency resource that is distributed to send user data.
7, a kind of network node is characterized in that, comprising:
Judging unit is used to judge whether first interface is the bottleneck of user data transmission passage;
The limiting speed adjustment unit is used for the judged result according to judging unit, adjusts the limiting speed of second interface; Described second interface is used to transmit the user data that described network node is received by described first interface;
The data dispatching unit is used for the limiting speed according to adjusted second interface of described limiting speed adjustment unit, and dispatch user data also sends.
8, network node according to claim 7 is characterized in that:
It is congested that described judging unit is used to specifically judge whether first interface takes place, if, determine that first interface is the bottleneck of user data transmission passage, if not, determine that first interface is not the bottleneck of user data transmission passage;
Whether the actual flow that perhaps specifically is used to judge first interface greater than the flow target value of first interface, if, determine that first interface is the bottleneck of user data transmission passage, if not, determine that first interface is not the bottleneck of user data transmission passage.
9, according to claim 7 or 8 described network nodes, it is characterized in that:
Described limiting speed adjustment unit comprises: the first limiting speed adjustment unit is used for reducing the limiting speed of second interface when first interface is the bottleneck of user data transmission passage.
10, network node according to claim 9 is characterized in that, also comprises:
The maximum acquiring unit is used to obtain the limiting speed of second interface after the reduction and the higher value among the second interface limiting speed minimum value;
Described data dispatching unit is used for the higher value that obtained according to described maximum acquiring unit, and dispatch user data also sends.
11, according to claim 7 or 8 described network nodes, it is characterized in that:
Described limiting speed adjustment unit comprises: the second limiting speed adjustment unit is used for when first interface is not the bottleneck of user data transmission passage the limiting speed of second interface that raises.
12, network node according to claim 11 is characterized in that, also comprises:
The minimum value acquiring unit is used for obtaining the smaller value of the flow target value of the limiting speed of second interface after the rising and first interface;
Described data dispatching unit is used for the smaller value that obtained according to described minimum value acquiring unit, and dispatch user data also sends.
13, a kind of network node is characterized in that, comprising:
Judging unit is used to judge whether first interface is the bottleneck of user data transmission passage;
Restriction resource adjustment unit is used for the judged result according to described judging unit, adjusts the restriction resource of second interface; Described second interface is used to transmit the user data that described network node is received by described first interface;
The data dispatching unit is used for the restriction resource according to adjusted second interface of described restriction resource adjustment unit, and dispatch user data also sends.
14, network node according to claim 13 is characterized in that:
It is congested that described judging unit is used to specifically judge whether first interface takes place, if, determine that first interface is the bottleneck of user data transmission passage, if not, determine that first interface is not the bottleneck of user data transmission passage;
Whether the actual flow that perhaps specifically is used to judge first interface greater than the flow target value of first interface, if, determine that first interface is the bottleneck of user data transmission passage, if not, determine that first interface is not the bottleneck of user data transmission passage.
15, according to claim 13 or 14 described network nodes, it is characterized in that,
Described restriction resource adjustment unit comprises the first restriction resource adjustment unit, is used for when first interface is the bottleneck of user data transmission passage, reduces the restriction resource of second interface.
16, network node according to claim 15 is characterized in that:
Resource maximum acquiring unit is used to obtain the restriction resource of second interface after the reduction and the higher value among second interface restriction resource minimum value;
Described data dispatching unit is used for the higher value that obtained according to described resource maximum acquiring unit, for the user distributes running time-frequency resource, utilizes the running time-frequency resource that is distributed to send user data.
17, according to claim 13 or 14 described network nodes, it is characterized in that:
Described restriction resource adjustment unit comprises the second restriction resource adjustment unit, is used for when first interface is not the bottleneck of user data transmission passage, increases the restriction resource of described second interface.
18, a kind of network system comprises as any described network node among the claim 7-17.
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| CN103152286A (en) * | 2013-02-21 | 2013-06-12 | 华为技术有限公司 | Message transmission rate scheduling method, equipment and system |
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| US6889050B1 (en) * | 2000-11-22 | 2005-05-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Variable transmission rate services in a radio access network |
| CN101030926A (en) * | 2006-02-28 | 2007-09-05 | 华为技术有限公司 | Method for controlling network data flow of global microwave access inter-operation |
| CN100514938C (en) * | 2006-04-30 | 2009-07-15 | 华为技术有限公司 | Method and system for controlling Iub interface band width resource in wireless network |
| CN101098301B (en) * | 2006-06-27 | 2011-04-20 | 华为技术有限公司 | Two-layer congestion control method of wireless network |
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| CN103152286B (en) * | 2013-02-21 | 2016-05-25 | 华为技术有限公司 | Message transmission rate dispatching method, equipment and system |
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