CN1553647A - Method for building permanent virtual connection - Google Patents
Method for building permanent virtual connection Download PDFInfo
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- CN1553647A CN1553647A CNA031372384A CN03137238A CN1553647A CN 1553647 A CN1553647 A CN 1553647A CN A031372384 A CNA031372384 A CN A031372384A CN 03137238 A CN03137238 A CN 03137238A CN 1553647 A CN1553647 A CN 1553647A
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- bandwidth
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Abstract
This invention discloses a method for building Permanent Virtual Connection (PVC). It includes: A) presetting convergence ratio of band width, uses the convergence ration of band width to convergent the system physical resources, converts the system physical resources into logical resource; the above system physical resources including physical bandwidth and physical buffer, is divided into the physical resources occupied by current connection and the available physical resource remained by system; B) accepting the request of building PVC from users, the request includes the connection parameter and bandwidth parameter; C) deciding if the connection parameter can be used, if yes, then executing step D, otherwise PVC is failure; D) according to the bandwidth parameter in the request of users, assigning the logical resources to the users request for building PVC, then the PVC is built.
Description
Technical field
The present invention relates to the broadband access technology field, particularly about a kind of method of setting up the permanent virtual connection.
Background technology
Along with the development of network and information technology, broadband access network has replaced narrowband dialing, because the continuous surge of online transfer of data and the finiteness of Internet resources effectively utilize broadband resource to become the focus that each side pays close attention to.
At present, broadband access network mostly adopts the access way of asynchronous transfer mode (ATM), illustrates as shown in Figure 1 based on the access device networking of atm technology.In connecting system shown in Figure 1, user's request is set up permanent virtual and is connected (PVC, permanent virtual circuit), system judges that can current operational Internet resources satisfy user's requirement, still can guarantee the existing service quality that connects if can meet the demands and when setting up new the connection, system then admits this user, sets up the PVC permanent virtual with the user and is connected.
As shown in Figure 2, it is as follows that system sets up the concrete grammar of PVC:
PVC is set up in step 201, user request, and system accepts resource parameters such as the connection parameter of user applies and bandwidth;
Whether the PVC virtual connections parameter of step 202, systems inspection user applies can be used, if can use, and execution in step 203, otherwise PVC sets up failure;
Whether step 203, check system physics available bandwidth can satisfy the bandwidth resources of user applies, if can satisfy, and execution in step 204, otherwise PVC sets up failure;
Step 204, calculate the cache resources that this user need take, whether the physics available cache memory resource of check system satisfies the demand, if satisfy the demand, and execution in step 205, otherwise PVC sets up failure;
Step 205, system distribute the physics bandwidth resources to the user;
Step 206, system distribute the physics cache resources to the user;
Step 207, PVC set up.
From said method as can be seen, when system and user set up the PVC permanent virtual and are connected, to distribute certain resource for the user, so PVC is in case set up, no matter whether the user is online, just by this user for good and all, independently take, this is equivalent to users all in the system and is all using constantly the resource of distributing to the user.In its tangible reality, only some user is online at synchronization, and user that can not be all is simultaneously online.Because the Internet resources of system have been distributed to the user, CU and that a part of resource of not using be being wasted in vain just.For example: an ADSL connecting system maximum can be held 100 users, and the user of using system is general maximum about 70 users simultaneously.If system has the 100M resource, the bandwidth of distributing for each user all is 1M, and so, 70 online users have only used the 70M resource of system, and remaining 30M resource is not wasted owing to there being the user to use.
Therefore, in setting up the permanent virtual connection procedure, the mode for each user for good and all distributes the fixed physical resource has reduced utilization rate of network resource widely.
Summary of the invention
In view of this, the invention provides a kind of new method of setting up the permanent virtual connection, make it more effectively to utilize Internet resources, further improve utilization rate of network resource.
A kind of method of setting up the permanent virtual connection, this method may further comprise the steps:
A. setting in advance the bandwidth convergence ratio, utilize bandwidth convergence ratio collective system physical resource, is logical resource with the system physical resource conversion;
B. accept the user and set up the permanent virtual connection requests, comprise connection parameter and bandwidth parameter that the user asks;
C. judge whether the connection parameter that the user imports can be used, if can use, execution in step D, otherwise permanent virtual connects sets up failure;
D. according to the bandwidth parameter in user's request, for user's assignment logic resource that permanent virtual connects is set up in request, permanent virtual connects to be set up.
The bandwidth convergence ratio is set described in the steps A to be comprised:
A1. the user imports bandwidth convergence ratio numerical value to be provided with;
A2. judge the scope of bandwidth convergence ratio numerical value to be provided with:
If bandwidth convergence ratio numerical value to be provided with is less than or equal to 1, getting the bandwidth convergence ratio is 1;
If bandwidth convergence ratio numerical value to be provided with is greater than 1 and be less than or equal to 2, getting this numerical value is the bandwidth convergence ratio;
If bandwidth convergence ratio numerical value to be provided with is greater than 2, the bandwidth convergence ratio is provided with failure.
Described system physical resource comprises band width in physical and physical cache, is divided into existing actual physical resource that takies and the remaining physics available resources of system of connecting.
Utilize bandwidth convergence ratio collective system physical resource to comprise in the described steps A:
A3. utilize the actual physical resource that takies of the existing connection of bandwidth convergence ratio convergence, the actual physical resource that takies of existing connection is converted into the existing actual logical resource that takies that connects;
A4. judge the existing service quality that can the actual logical resource that takies satisfy existing connection that connects, if satisfy, execution in step A5, otherwise, system physical resource convergence failure;
A5. utilize the remaining physics available resources of bandwidth convergence ratio collective system, the remaining physics available resources of system are changed into the logic available resources, comprise logic available bandwidth and logic available cache memory.
Comprise for user's assignment logic resource of asking to set up the permanent virtual connection among the described step D:
D1. judge whether the remaining logic available bandwidth of system satisfies the bandwidth of user applies, if satisfy, execution in step D2 then, otherwise permanent virtual connects sets up failure;
D2. the buffer memory that needs of computation requests user judges whether the remaining logic available cache memory of system satisfies request user's needs, if satisfy, and execution in step D3 then, otherwise permanent virtual connects sets up failure;
D3. set up user's assignment logic bandwidth resources and the logical cache resource that permanent virtual connects for request.
Described step D further comprises:
D4. the ratio that calculates the bandwidth convergence ratio of the bandwidth of user applies and system's setting obtains actual allocated and obtains the physical cache of actual allocated to the user for user's band width in physical and buffer memory that the computation requests user needs and the ratio of the bandwidth convergence ratio of system's setting;
D5. give user's band width in physical and physical cache configure system hardware with actual allocated.
Permanent virtual connects after the foundation failure in step D1 or step D2, and this method further comprises:
Reset the bandwidth convergence ratio, utilize the described bandwidth convergence ratio collective system physical resource of resetting, utilize the system resource after restraining to redistribute resource then for the user who has connected.
The present invention is to be logical resource with the system physical resource conversion, and the system logic resource used as shared resource, according to the distribution of current resource with take situation, dynamically set up user's assignment logic resource that permanent virtual connects, and then improved utilization rate of network resource widely for each request.
Description of drawings
Fig. 1 is the access device networking schematic diagram based on atm technology;
Fig. 2 is for setting up the flow chart of PVC in the prior art;
Fig. 3 is provided with the flow chart of convergence ratio and collective system physical resource for system;
Fig. 4 is the variation that power system capacity after the convergence ratio is set;
Fig. 5 is the new flow chart of setting up PVC.
Embodiment
Further specify specific embodiments of the present invention below in conjunction with flow chart and specific embodiment.
The several notions that relate in the at first clear and definite scheme once are so that more clearly illustrate specific embodiments of the invention.
The bandwidth convergence ratio is meant the ratio of bandwidth summation with the system physical bandwidth of current all user applies, and the bandwidth convergence ratio numerical value of system default is " 1 ".
Virtual bandwidth is meant the logic bandwidth that obtains after system utilizes the bandwidth convergence ratio with the convergence of band width in physical logic.
The system physical resource is divided from view of function, is divided into band width in physical resource and cache resources, and the angular divisions from using can be divided into actual physical resource that takies of the user who has connected and physics available resources again.
The system logic resource is corresponding with the system physical resource, can be divided into logic bandwidth resources and logical cache resource, can be divided into the logical resource and the logic available resources of the CU that has connected again.
The present invention adopts the virtual bandwidth technology, by the bandwidth convergence ratio is set, is logical resource with the system physical resource conversion, and logical resource is dynamically distributed to the user, connects thereby set up permanent virtual.
Lift a preferred embodiment below and introduce the detailed process that system is provided with the bandwidth convergence ratio and utilizes bandwidth convergence ratio collective system physical resource among the present invention.
Shown in Figure 3 referring to flow process, bandwidth is set, and to restrain the detailed process of collective system physical resource when as follows:
Step 301, the bandwidth convergence ratio numerical value that user's input is to be provided with;
Step 302, system are judged the scope of bandwidth convergence ratio numerical value to be provided with, if convergence ratio numerical value to be provided with less than 1, the bandwidth convergence ratio is got system default value " 1 ", execution in step 303; If convergence ratio numerical value to be provided with is got this value as the bandwidth convergence ratio, execution in step 303 between interval (1,2); If the convergence ratio that desire is provided with is greater than 2, at this moment, the summation of active user's bandwidth application has surpassed the power system capacity upper limit, and system is difficult to continue to provide quality of connection to guarantee that so system does not support this convergence ratio, convergence ratio is provided with failure again;
Step 303, bandwidth convergence ratio are provided with success, update system bandwidth convergence ratio numerical value;
Step 304, utilize bandwidth convergence ratio convergence that the actual physical resource that takies of connection has been arranged, connect the actual physical resource that takies and be converted into the existing actual logical resource that takies that connects existing;
Can step 305, the actual logical resource that takies of the existing connection of judgement satisfy the existing service quality that connects, if can satisfy, and execution in step 306, otherwise, restrain failure;
Step 306, utilize bandwidth convergence ratio collective system physics available resources, the system physical available resources are changed into the logic available resources, convergence is finished.Wherein, the logic available resources comprise logic available bandwidth and logic available cache memory.
From said process as can be known, the scope of the bandwidth convergence ratio of system's setting is [1,2].When convergence ratio was 1, the physical resource of system equated with logical resource; When convergence ratio when interval (1,2), the logical resource of system is greater than physical resource, at this moment, the physical capacity of system itself is variation not, but logical capacity enlarged, system can admit more user.
Referring to shown in Figure 4, before the bandwidth convergence ratio was not set, system's available bandwidth was a physical resource, was the 155M band width in physical altogether; If the bandwidth convergence ratio is set to 200/155, utilize this bandwidth convergence ratio collective system resource so after, then system's available bandwidth is a logical resource, is the virtual bandwidth of 200M altogether, therefore, it is big that power system capacity becomes.
Come the elaboration system after the bandwidth convergence ratio is set, to set up the detailed process that permanent virtual connects below.
Fig. 5 has illustrated the new flow process that permanent virtual connects of setting up, and its concrete steps are as follows:
Whether the PVC of step 502, systems inspection user applies connects parameter can use, if can use, and execution in step 503, otherwise permanent virtual connects sets up failure;
Actual allocated is given this user's bandwidth resources and buffer memory resource configuration system hardware in step 506, the usefulness step 505, and the PVC permanent virtual connects to be set up.
Set up in the process that permanent virtual connects new, system be not for each user regularly, Resources allocation independently, but whole system is used as shared resource, dynamically give user resource allocation according to the operating position of customer flow and system.
When the bandwidth convergence ratio of system's setting was 1, the bandwidth that system assignment is given each user is the bandwidth of this user applies just; The bandwidth convergence ratio that is provided with when system is when interval (1,2), and the bandwidth summation of current all online users' applications has surpassed the band width in physical of system, and system assignment is given the bandwidth of the bandwidth of the actual use of each user less than user applies.And along with the continuous increase of bandwidth convergence ratio, the actual band width in physical that takies of user is in continuous minimizing.At this moment, because system adopts the mode of sharing the formula scheduling to come management of system resource, so each user's resource is average according to a certain percentage decline, the bandwidth of user applies is big, and the bandwidth of decline is also big, and use can not influence each other between the user.
Certainly, because system sets in advance the bandwidth convergence ratio, if the remaining logic available bandwidth resources of system can not satisfy user's needs in step 503, at this moment, system can reset the bandwidth convergence ratio, but, redistribute the resource that it takies for the user who has connected.
Therefore, the present invention sets up the method that permanent virtual connects, and makes system can admit more user, and system resource is fully utilized, and has improved utilization rate of network resource greatly.
All within above-mentioned spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (7)
1, a kind of method of setting up the permanent virtual connection is characterized in that this method may further comprise the steps:
A. setting in advance the bandwidth convergence ratio, utilize bandwidth convergence ratio collective system physical resource, is logical resource with the system physical resource conversion;
B. accept the user and set up the permanent virtual connection requests, comprise connection parameter and bandwidth parameter that the user asks;
C. judge whether the connection parameter that the user imports can be used, if can use, execution in step D, otherwise permanent virtual connects sets up failure;
D. according to the bandwidth parameter in user's request, for user's assignment logic resource that permanent virtual connects is set up in request, permanent virtual connects to be set up.
2, method according to claim 1 is characterized in that being provided with described in the steps A bandwidth convergence ratio and comprises:
A1. the user imports bandwidth convergence ratio numerical value to be provided with;
A2. judge the scope of bandwidth convergence ratio numerical value to be provided with:
If bandwidth convergence ratio numerical value to be provided with is less than or equal to 1, getting the bandwidth convergence ratio is 1;
If bandwidth convergence ratio numerical value to be provided with is greater than 1 and be less than or equal to 2, getting this numerical value is the bandwidth convergence ratio;
If bandwidth convergence ratio numerical value to be provided with is greater than 2, the bandwidth convergence ratio is provided with failure.
3, method according to claim 1 and 2 is characterized in that described system physical resource comprises band width in physical and physical cache, is divided into existing actual physical resource that takies and the remaining physics available resources of system of connecting.
4, method according to claim 3 is characterized in that utilizing in the described steps A bandwidth convergence ratio collective system physical resource to comprise:
A3. utilize the actual physical resource that takies of the existing connection of bandwidth convergence ratio convergence, the actual physical resource that takies of existing connection is converted into the existing actual logical resource that takies that connects;
A4. judge the existing service quality that can the actual logical resource that takies satisfy existing connection that connects, if satisfy, execution in step A5, otherwise, system physical resource convergence failure;
A5. utilize the remaining physics available resources of bandwidth convergence ratio collective system, the remaining physics available resources of system are changed into the logic available resources, comprise logic available bandwidth and logic available cache memory.
5, method according to claim 4 is characterized in that comprising for user's assignment logic resource of asking to set up the permanent virtual connection among the described step D:
D1. judge whether the remaining logic available bandwidth of system satisfies the bandwidth of user applies, if satisfy, execution in step D2 then, otherwise permanent virtual connects sets up failure;
D2. the buffer memory that needs of computation requests user judges whether the remaining logic available cache memory of system satisfies request user's needs, if satisfy, and execution in step D3 then, otherwise permanent virtual connects sets up failure;
D3. set up user's assignment logic bandwidth resources and the logical cache resource that permanent virtual connects for request.
6, method according to claim 5 is characterized in that described step D further comprises:
D4. the ratio that calculates the bandwidth convergence ratio of the bandwidth of user applies and system's setting obtains actual allocated and obtains the physical cache of actual allocated to the user for user's band width in physical and buffer memory that the computation requests user needs and the ratio of the bandwidth convergence ratio of system's setting;
D5. give user's band width in physical and physical cache configure system hardware with actual allocated.
7, method according to claim 5 is characterized in that permanent virtual connects after the foundation failure in step D1 or step D2, and this method further comprises:
Reset the bandwidth convergence ratio, utilize the described bandwidth convergence ratio collective system physical resource of resetting, utilize the system resource after restraining to redistribute resource again, then execution in step D1 for the user who has connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031372384A CN1302644C (en) | 2003-06-03 | 2003-06-03 | Method for building permanent virtual connection |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031372384A CN1302644C (en) | 2003-06-03 | 2003-06-03 | Method for building permanent virtual connection |
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| CN1553647A true CN1553647A (en) | 2004-12-08 |
| CN1302644C CN1302644C (en) | 2007-02-28 |
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| CNB031372384A Expired - Fee Related CN1302644C (en) | 2003-06-03 | 2003-06-03 | Method for building permanent virtual connection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384148C (en) * | 2005-07-22 | 2008-04-23 | 华为技术有限公司 | Method and device for resource allocation in network |
| CN100401704C (en) * | 2005-07-27 | 2008-07-09 | 华为技术有限公司 | Method for obtaining constringency ratio |
| CN100407640C (en) * | 2004-12-31 | 2008-07-30 | 华为技术有限公司 | Method for setting signaling channel bandwidth between central module and remote module |
| CN100426798C (en) * | 2006-03-08 | 2008-10-15 | 华为技术有限公司 | Bandwidth managing device and method |
| CN101064675B (en) * | 2006-04-26 | 2011-07-06 | 华为技术有限公司 | Method and apparatus for switching packet service connection |
| CN105812286A (en) * | 2014-12-31 | 2016-07-27 | 华为技术有限公司 | Service bandwidth determining method in IP network and network device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5673253A (en) * | 1996-02-29 | 1997-09-30 | Siemens Business Communication Systems | Dynamic allocation of telecommunications resources |
| US20020133589A1 (en) * | 1998-09-11 | 2002-09-19 | Rajugopal R. Gubbi | Dynamic bandwidth negotiation scheme for wireless computer networks |
| CN1152489C (en) * | 2001-05-09 | 2004-06-02 | 华为技术有限公司 | Implementation of dynamic bandwidth distribution of passive optical network in asynchronus transfer mode |
-
2003
- 2003-06-03 CN CNB031372384A patent/CN1302644C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407640C (en) * | 2004-12-31 | 2008-07-30 | 华为技术有限公司 | Method for setting signaling channel bandwidth between central module and remote module |
| CN100384148C (en) * | 2005-07-22 | 2008-04-23 | 华为技术有限公司 | Method and device for resource allocation in network |
| CN100401704C (en) * | 2005-07-27 | 2008-07-09 | 华为技术有限公司 | Method for obtaining constringency ratio |
| CN100426798C (en) * | 2006-03-08 | 2008-10-15 | 华为技术有限公司 | Bandwidth managing device and method |
| CN101064675B (en) * | 2006-04-26 | 2011-07-06 | 华为技术有限公司 | Method and apparatus for switching packet service connection |
| CN105812286A (en) * | 2014-12-31 | 2016-07-27 | 华为技术有限公司 | Service bandwidth determining method in IP network and network device |
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| Publication number | Publication date |
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| CN1302644C (en) | 2007-02-28 |
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