CN104767677A - Access node system and computing resource pool unit for same - Google Patents
Access node system and computing resource pool unit for same Download PDFInfo
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- CN104767677A CN104767677A CN201410005936.3A CN201410005936A CN104767677A CN 104767677 A CN104767677 A CN 104767677A CN 201410005936 A CN201410005936 A CN 201410005936A CN 104767677 A CN104767677 A CN 104767677A
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Abstract
The invention provides an access node system, which comprises a computing resource pool unit and one or more access node units. The computing resource pool unit comprises at least one access node controller example for executing a control plane function. The access node units are physically independent from the computing resource pool unit, each access node unit comprises at least one forwarding rule for executing a control plane function, and each forwarding rule is defined by each access node controller example. Favorably, each access node controller example in the at least one access node controller example is independent logically. Favorably, each forwarding rule in the at least one forwarding rule is independent logically.
Description
Technical field
The present invention relates to communication system, particularly relate to the access node in communication system.
Background technology
At present, be normally that granularity carrys out multiplexing or shared access node with line termination boards (LT board) or port within the access network, thus realize the multiplexing access node of multiple tenant.Such as, in the access network shown in Fig. 1, access node comprises multiple line termination boards, and wherein, line termination boards LT1 keeps for tenant 1, and line termination boards LT2 keeps for tenant 2.For the access node of this structure, different tenants must share the same control/management plane of this access node.
Following defect can be there is in the existing access node structure comprising the access node shown in Fig. 1:
(1) this closely-coupled structure of access node can not network enabled customization.When operator wants to dispose new network capabilities and business, it has to configure successively the renewal of each equipment or waiting facilities business version.
(2) hardware and software of Vertical collection makes access node very complicated and very difficult operation.In addition, close and privately owned system is a kind of obstacle for innovation.
(3) because different tenants can have the different customized demand of even conflicting, bring difficulty therefore to the configuration of access node and management.
(4) under current closely-coupled access node structure, the isolation of the control plane realizing different tenant is difficult to.
(5) owing to lacking flexibility and opening, current access node hardware configuration can not be embodied as the demand that specific tenant dynamically and automatically provides the characteristic of making to measure completely.
Summary of the invention
Based on the problems referred to above, be necessary to provide a kind of new access node structure, it can support to customize and virtualized function.
Basic conception of the present invention is, control plane function in existing access node is separated with data plane functions, control plane function in multiple access node is focused in a computational resource pool unit with the form of multiple access node controller example, each node in the plurality of like this access node just only data left plane function, also namely become one flexibly with flexible hardware forward node.
According to an aspect of the present invention, providing a kind of access node system, is also a kind of new access node structure.This access node system comprises: computational resource pool unit, and it comprises at least one access node controller example, for performing control plane function; One or more access node unit, itself and described computational resource pool unit are physically independent, and each access node unit in described one or more access node unit comprises at least one and forwards rule, for performing data plane functions; Wherein, described in each access node controller example definition at least one access node controller example described, at least one forwards the one or more forwarding rules in rule.
Favourable, independent in logic between each access node controller example at least one access node controller example described.
Favourable, each at least one forwarding rule described forwards between rule independent in logic.
In access node structure of the present invention, one or more forwarding rule is by an access node controller example definition, an access node controller example and forward rule with one or more of its definition and form a virtual access node, wherein, this access node controller performs the control plane function of dummy node, and forwards rule definition data retransmission function.Because access node controller example runs in the mode of software definition, be therefore easy to create or upgrade and meet the demand customized.In addition, because all access node controller examples share public computational resource pool unit, therefore, the utilance of computational resource is more effective.
Favourable, each access node controller example at least one access node controller example described comprises: bandwidth control assembly, traffic engineering assembly, access control assembly, and application perception QoS strengthens assembly and network divides chip module.
Favourable, at least one each forwarding rule forwarded in rule described includes but not limited to OpenFlow flow table.
According to another aspect of the present invention, provide a kind of computational resource pool unit for access node system, described access node system also comprises one or more access node unit, each access node unit comprises at least one and forwards rule, for performing data plane functions, wherein, described computational resource pool unit comprises at least one access node controller example, for performing control plane function, wherein, described in each access node controller example definition at least one access node controller example described, at least one forwards the one or more forwarding rules in rule.
Various aspects of the present invention are more clear by the explanation by specific embodiment hereinafter.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows access node structural representation of the prior art;
Fig. 2 shows access node structural representation according to an embodiment of the invention;
Fig. 3 shows an example of access node structure of the present invention;
Fig. 4 shows another example of access node structure of the present invention; And
Fig. 5 shows the schematic diagram of a virtual access node in access node structure of the present invention.
In the drawings, same or similar Reference numeral represents identical or corresponding parts or feature.
Embodiment
Below with reference to accompanying drawing, various embodiments of the present invention are described in detail.
Just as described hereinbefore., design of the present invention is control plane (Control plane) function in access node to be separated with datum plane (Data plane) function, the control plane function of multiple access node is concentrated in a computational resource pool unit, original access node becomes a simple forward node, this forward node by the hardware supports of flexibility, as shown in Figure 2.
With reference to Fig. 3, access node system of the present invention 10 (also namely new access node structure) comprise computational resource pool unit 110 and with this computational resource pool unit 110 independently one or more access node unit 120 (be only exemplary, 3 access node unit have been shown in Fig. 3) physically.
Computational resource pool unit 110 comprises at least one access node controller example (be only exemplary, 3 access node controller examples have been shown in Fig. 3), and this access node controller example is for performing control plane function.Logically separate between each access node controller example in computational resource pool unit 110.
Each access node unit 120 comprises at least one and forwards rule, for performing data plane functions.An access node controller example definition also manages one or more forwarding rule.Be only exemplary, only contain one in each access node unit 120 shown in Fig. 3 and forward rule.
Certainly, In an alternative embodiment, also multiple forwarding rule can be comprised in each access node unit, wherein, each in each access node unit forwards between rule logically separate, and each forwards rule corresponding to the different access node controller example in computational resource pool unit.Such as, with reference to shown in Fig. 4, access node unit 220 comprises two and forwards rule, be respectively and forward rule 1 and forward rule 2, accordingly, forwarding two regular access node controller examples by comprising definition these two in computational resource pool unit 210, being respectively access node controller example 1 and access node controller example 2.Wherein, access node controller example 1 defines and manages and forwards rule 1, and access node controller example 2 defines and manages and forwards rule 2.
That is, in the various embodiments of the invention, an access node controller example in computational resource pool unit and one or more in access node unit forward rule and form a virtual access node, each virtual access node is used for being tenant's service, (it should be noted that as shown in Figure 5, be only exemplary, one that has illustrated in an access node controller example and access node unit in Fig. 5 forwards rule and forms a virtual access node).Known with reference to Fig. 5, the control plane function of each virtual access node in access node structure of the present invention and data plane functions are independently performed in the network equipment respectively in two physically, also be, control plane function is performed by the access node controller example in computational resource pool unit, and data plane functions is performed by access node unit.Although, from the angle realized, control plane function and data plane functions are performed by two physical network element be separated respectively, but, from the angle of tenant, he it is seen that a complete node, and can not know any details performed in which physical network element about which function.
When one extreme, in the access node structure in the present invention, only comprise an access node unit, only comprise one in this access node unit and forward rule, accordingly, in computational resource pool unit, also only comprise an access node controller example.This access node controller example and a forwarding rule composition virtual access node are tenant's service.
And under usual situation, it is right to comprise multiple access node controller example in access node structure of the present invention and forward rule, each access node controller example and corresponding one or more forwarding rule formation virtual access node.Multiple virtual access node in this access node structure can be multiple different tenant service, thus separate between each virtual access node of maintenance while support customization demand.
Favourable, forwarding rule can be OpenFlow flow table, or the algorithm of similar OpenFlow flow table.
Favourable, each access node controller example can comprise bandwidth and control (BandwidthControl) assembly, traffic engineering (Traffic Engineering) assembly, access control (AccessControl) assembly, application perception QoS strengthens (Application-aware QoSEnhancement) assembly and network burst (Network Slicing) assembly.
Wherein, the priority of bandwidth control assembly in responsible scheduling and management different user link, to provide specific band width service.
Traffic engineering assembly such as, for controlling and guarantee the forwarding behavior at access node place and performance, the mechanism of similar OpenFlow, and its packet developed and managed in access node forwards rule/stream table.Another example is VLAN tag configurations and management.
Access control assembly comprises the traditional access node function of major part, such as, and certification, IGMP, ARP and DHCP.
Application perception QoS strengthens assembly to be provided for being responsible for business or optimizing.Such as, for video traffic, one group of QoS demand parameter of corresponding business demand should be set up.This parameter can comprise mean data rate, average retardation, maximum tolerance delay etc.These parameters or QoS demand should be sent to access node.By utilizing by embedded dispatching algorithm/mechanism, access node can provide more chance or priority to guarantee service quality to given video traffic.
Network divides chip module to be a specific assembly, and it ensures independently running space for being responsible for each tenant.When multiple access node controller example is established, network partition unit should maintain resource separation and avoid potential conflict.
Understandable, apply perception QoS in access node structure of the present invention and strengthen assembly and network and divide chip module to omit.
It should be noted that, above-described embodiment is only exemplary, but not limitation of the present invention.Any technical scheme not deviating from spirit of the present invention all should fall within protection scope of the present invention, and this comprises the different technologies feature that use occurs in different embodiments, and installation method can combine, to obtain beneficial effect.In addition, any Reference numeral in claim should be considered as the claim involved by restriction; " comprise " word and do not get rid of device unlisted in other claims or specification or step.
Claims (12)
1. an access node system, comprising:
Computational resource pool unit, it comprises at least one access node controller example, for performing control plane function;
One or more access node unit, itself and described computational resource pool unit are physically independent, and each access node unit in described one or more access node unit comprises at least one and forwards rule, for performing data plane functions;
Wherein, described in each access node controller example definition at least one access node controller example described, at least one forwards the one or more forwarding rules in rule.
2. access node system according to claim 1, wherein, independent in logic between each access node controller example at least one access node controller example described.
3. access node system according to claim 1, wherein, each at least one forwarding rule described forwards between rule independent in logic.
4. access node system according to claim 1, wherein, each access node controller example at least one access node controller example described comprises:
-bandwidth control assembly;
-traffic engineering assembly;
-access control assembly.
5. access node system according to claim 4, wherein, described each access node controller example also comprises:
-application perception QoS strengthens assembly;
-network divides chip module.
6. access node system according to claim 1, wherein, at least one each forwarding rule forwarded in rule described comprises OpenFlow flow table.
7. for a computational resource pool unit for access node system, described access node system also comprises one or more access node unit, and each access node unit comprises at least one and forwards rule, for performing data plane functions, wherein,
Described computational resource pool unit comprises at least one access node controller example, for performing control plane function, wherein, described in each access node controller example definition at least one access node controller example described, at least one forwards the one or more forwarding rules in rule.
8. computational resource pool unit according to claim 7, wherein, independent in logic between each access node controller example at least one access node controller example described.
9. computational resource pool unit according to claim 7, wherein, each at least one forwarding rule described forwards between rule independent in logic.
10. computational resource pool unit according to claim 7, wherein, each access node controller example at least one access node controller example described comprises:
-bandwidth control assembly;
-traffic engineering assembly;
-access control assembly.
11. computational resource pool units according to claim 10, wherein, described each access node controller example also comprises:
-application perception QoS strengthens assembly;
-network divides chip module.
12. computational resource pool units according to claim 7, wherein, at least one each forwarding rule forwarded in rule described comprises OpenFlow flow table.
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| WO2017045530A1 (en) * | 2015-09-17 | 2017-03-23 | 华为技术有限公司 | Communication control method and controller, user equipment, and function instance |
| WO2017097169A1 (en) * | 2015-12-08 | 2017-06-15 | Huawei Technologies Co., Ltd. | Method and system for performing network slicing in a radio access network |
| CN107105501A (en) * | 2016-02-19 | 2017-08-29 | 电信科学技术研究院 | A kind of paging method based on network burst, device and system |
| WO2018233031A1 (en) * | 2017-06-21 | 2018-12-27 | 深圳市盛路物联通讯技术有限公司 | Internet of things-based data transmission control method and system |
| US10356608B2 (en) | 2016-02-18 | 2019-07-16 | Huawei Technologies Co., Ltd. | System and method of user equipment state configurations |
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| CN107105501B (en) * | 2016-02-19 | 2019-07-02 | 电信科学技术研究院 | A kind of paging method based on network fragment, device and system |
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| CN104767677B (en) | 2018-05-04 |
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