CN115426551A - OSU bandwidth adjusting method and system - Google Patents
OSU bandwidth adjusting method and system Download PDFInfo
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- CN115426551A CN115426551A CN202211037841.0A CN202211037841A CN115426551A CN 115426551 A CN115426551 A CN 115426551A CN 202211037841 A CN202211037841 A CN 202211037841A CN 115426551 A CN115426551 A CN 115426551A
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- H—ELECTRICITY
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- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
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Abstract
The invention relates to an OSU bandwidth adjusting method and a system, which are characterized in that the method comprises the following steps: the device data plane triggers a bandwidth adjustment request according to the condition of bidirectional flow change of an access side source and/or a sink; the control plane calculates a bandwidth adjustment strategy according to the request of the equipment data plane and informs the equipment data plane to update according to the bandwidth adjustment strategy so as to realize bandwidth dynamic adjustment; the bandwidth adjustment strategy is used for adjusting the OSU channel bandwidth node by node through a signaling process so that the adjusted bandwidth can meet the flow demand of the access side. The method can realize dynamic adjustment of the OSU bandwidth and improve the adjustment efficiency.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an OSU bandwidth adjustment method and system.
Background
At present, with the rise of high-quality video services, higher requirements are put on a bearer network, and besides the increase of bandwidth, interactive services have higher requirements on time delay. At present, a large number of high-quality special lines are still carried by SDH, a huge inventory market is formed, as the SDH gradually returns from the network, part of network deployment adopts SDH and OTN mixed networking, and a network superposition scene exists, so that the operation and maintenance of the superposition network are very complex, and the problem of operation and maintenance difficulty is brought. The novel OTN networking technology needs to provide efficient customer service carrying capacity below 1G, further simplify the network, and reduce the complexity of operation and maintenance.
With the gradual sinking of the OTN to the access network, the OTN is required to not only provide the services aggregated by the PTN, PON, SDH, etc., but also directly carry the service of the terminal client. The OSU technology can provide finer time slot granularity and a simpler bandwidth lossless adjustment mechanism on the premise of keeping the advantages of a traditional OTN hard pipeline, rich OAM and the like, and supports the efficient bearing of client services with the speed of 2M to 100Gbps, so that the OTN has the capability of sinking from a backbone core to an access terminal.
In the related art, bandwidth supply has two schemes of bandwidth reservation and real-time bandwidth adjustment according to the requirements of clients. When a real-time bandwidth adjustment scheme is adopted, the SDN controller manages OSU bandwidth adjustment, the adjustment speed of a single connection can only reach a second level, the concurrent adjustment time of multiple connections is influenced by the performance of the controller and is easy to degrade, and the concurrent adjustment time of multiple connections can be a minute level in the worst case. Because the current OSU bandwidth adjustment is static adjustment, manual participation is needed, a bandwidth adjustment command is manually issued, the dynamic change of the client side flow cannot be monitored in real time, the real-time bandwidth adjustment according to the requirement is realized, and the adjustment efficiency is not high.
Disclosure of Invention
The embodiment of the invention provides an OSU bandwidth adjusting party and system, which are used for dynamically adjusting the OSU bandwidth and improving the adjusting efficiency.
In one aspect, an embodiment of the present invention provides a method for adjusting an OSU bandwidth, where the method includes:
the device data plane triggers a bandwidth adjustment request according to the condition of bidirectional flow change of an access side source and/or a sink;
the control plane calculates a bandwidth adjustment strategy according to the request of the equipment data plane and sends the strategy result to the equipment data plane for bandwidth adjustment so as to realize bandwidth dynamic adjustment;
the bandwidth adjustment strategy is used for adjusting the OSU channel bandwidth node by node through a signaling process so that the adjusted bandwidth can meet the flow demand of the access side.
In some embodiments, the triggering, by the device data plane, a bandwidth adjustment request according to a condition of bidirectional traffic change of an access side source and/or a sink includes:
when the real-time flow of the access side is increased and reaches a first preset threshold value, sending a bandwidth increase adjustment request;
when the real-time flow of the access side is reduced and reaches a second preset threshold value, sending a bandwidth reduction adjustment request;
the first preset threshold is greater than the second preset threshold.
In some embodiments, the first preset threshold value is: mc-Ms or Mc (1-Mp), wherein Mc is real-time flow of the access side, ms is a preset margin step length, and Mp is a preset proportional value;
the value of the second preset threshold is as follows: mc-n Ms or Mc (1-n Mp). Wherein n is a set value.
In some embodiments, the calculating the bandwidth adjustment policy includes:
and comparing the access side real-time flow requesting bandwidth adjustment with the current OSU channel bandwidth, and if the access side real-time flow is larger than the current OSU channel bandwidth, taking the access side real-time flow as the target bandwidth of bandwidth adjustment.
In some embodiments, the calculating the bandwidth adjustment policy includes:
and if the bandwidth adjustment requests from the source end and the sink end are received at the same time, calculating a bandwidth adjustment strategy by taking the bandwidth adjustment request corresponding to the end with larger flow as the basis.
In some embodiments, the calculating the bandwidth adjustment policy includes:
comparing the access side real-time flow corresponding to the bandwidth adjustment request as a basis with the current OSU channel bandwidth, and recording the access side real-time flow as a first reference flow if the access side real-time flow is smaller than the current OSU channel bandwidth;
taking the current flow of the end corresponding to the bandwidth adjustment request which is not taken as the basis when the bandwidth adjustment requests from the source end and the sink end are received at the same time last time as a second reference flow;
and taking the larger one of the first reference flow and the second reference flow as a target bandwidth of bandwidth adjustment.
In some embodiments, the calculating the bandwidth adjustment policy includes:
calculating a final bandwidth value by adopting a step-by-step adjustment mode or a proportional adjustment mode on the basis of the target bandwidth;
the step-by-step adjustment mode is used for calculating a final bandwidth value by using a preset margin step length on the basis of the target bandwidth, and the scale adjustment mode is used for calculating the final bandwidth value by using a preset scale value on the basis of the target bandwidth.
In some embodiments, when the final bandwidth value is calculated by using the step-by-step adjustment mode, the final bandwidth value is M + Ms, where M is the target bandwidth and Ms is a preset margin step;
and when the final bandwidth value is calculated by adopting the scaling mode, the final bandwidth value is M (1 + Mp), wherein Mp is a preset scaling value.
In some embodiments, when there is a new user, the method includes the steps;
the control plane distributes a preset bandwidth for the newly added user;
the control plane takes the sum of the current bandwidth and the preset bandwidth of the OSU as a bandwidth adjustment target and issues a device data plane;
and the equipment data plane adjusts the bandwidth according to the target of the bandwidth adjustment.
On the other hand, an embodiment of the present invention further provides a system for dynamically adjusting an OSU bandwidth, which is characterized in that the system includes:
the device data plane is used for triggering a bandwidth adjustment request according to the condition of bidirectional flow change of an access side source and/or a sink;
the control plane is used for calculating a bandwidth adjustment strategy according to the request of the equipment data plane and sending the strategy result to the equipment data plane for bandwidth adjustment so as to realize bandwidth dynamic adjustment;
the bandwidth adjustment strategy is used for adjusting the OSU channel bandwidth node by node through a signaling process so that the adjusted bandwidth can meet the flow demand of the access side.
In the embodiment of the invention, the bandwidth adjustment is automatically triggered by sensing the change of the access side flow, the flow conditions of the source and the sink are considered in the adjustment of the bandwidth, and the control strategy of the bandwidth adjustment is calculated, so that the automatic adjustment of the OSU channel bandwidth is realized. Therefore, the bandwidth requirement of the application can be sensed in real time, and the OSU pipeline bandwidth adjustment can be automatically triggered as required, so that the effect of time division multiplexing network bandwidth resources of different users can be realized, and the bearing cost of quality home wide services can be reduced. The bandwidth resource of the whole network is saved, and the comprehensive bearing cost is further reduced. Meanwhile, the bandwidth does not need to be adjusted manually, the network is further simplified, and the operation and maintenance complexity is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of an OSU bandwidth adjustment method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a bandwidth adjustment configuration according to an embodiment of the present invention;
fig. 3 is a schematic diagram of pre-allocation of bandwidth for a newly added user according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of data interaction among planes according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a bandwidth adjustment process according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a method for adjusting an OSU bandwidth, including the steps of:
s100, the device data plane triggers a bandwidth adjustment request according to the condition of bidirectional flow change of an access side source and/or a sink;
s200, the control plane calculates a bandwidth adjustment strategy according to the request of the equipment data plane and sends the strategy result to the equipment data plane for bandwidth adjustment so as to realize bandwidth dynamic adjustment;
it should be noted that the bandwidth adjustment policy is used to adjust the OSU channel bandwidth node by node through the signaling flow, so that the adjusted bandwidth meets the flow demand of the access side; the signaling flow is a mode of signaling transmission from node to node by using signaling protocols such as RSVP. The source end and the destination end refer to the head node and the tail node of a channel, and the source end can be understood as a first node and the destination end is a last node.
It can be understood that, as shown in fig. 4, the OSU bandwidth adjustment is triggered by the device data plane, the control plane controls the adjustment policy and issues the final adjustment target to the data plane according to the policy, and notifies the management plane of the update result, and the three planes complete the OSU bandwidth adjustment in a data interaction manner.
In the embodiment of the invention, the bandwidth adjustment is automatically triggered by sensing the change of the access side flow, the flow conditions of the source and the sink are considered in the adjustment of the bandwidth, and the control strategy of the bandwidth adjustment is calculated, so that the automatic adjustment of the OSU channel bandwidth is realized. Therefore, the bandwidth requirement of the application can be sensed in real time, and the OSU pipeline bandwidth adjustment can be automatically triggered as required, so that the effect of time division multiplexing network bandwidth resources of different users can be realized, and the bearing cost of quality home wide services can be reduced. The bandwidth resource of the whole network is saved, and the comprehensive bearing cost is further reduced. Meanwhile, the bandwidth does not need to be adjusted manually, the network is further simplified, and the operation and maintenance complexity is reduced.
In some embodiments, S100 comprises the steps of:
s110, when the real-time flow of the access side is increased and reaches a first preset threshold value, sending a bandwidth increase adjustment request;
s120, when the real-time flow of the access side is reduced and reaches a second preset threshold value, sending a bandwidth reduction adjustment request; wherein the first preset threshold is greater than the second preset threshold.
In this embodiment, it is considered that if the adjustment is reported when the traffic on the access side reaches the OSU bandwidth, there may be a short packet loss due to the continuous increase of the traffic, so that the adjustment is triggered in advance when the traffic increase is about to reach the upper limit of the OSU channel bandwidth. For the case that the client side traffic is reduced and the bandwidth of the OSU channel needs to be adjusted, the adjusted threshold value needs to be smaller than the adjusted threshold value.
Different thresholds are adopted for the OSU bandwidth increasing and decreasing, when the bandwidth is increased, a first preset threshold T1 is referred, and when the bandwidth is decreased, a second preset threshold T2 is referred. Preferably, when the real-time traffic bandwidth Mc > = T1, the bandwidth increase adjustment is triggered; mc < = T2, bandwidth reduction adjustment is triggered.
In this embodiment, a bandwidth adjustment trigger condition is further set. The client side port senses the change of the flow, and reports the change of the flow to the control plane to trigger the OSU bandwidth adjustment after the change of the flow exceeds a certain threshold value so as to prevent frequent triggering of the bandwidth adjustment due to the slight change of the flow of the client;
preferably, the first preset threshold value is: mc-Ms or Mc (1-Mp), wherein Mc is real-time flow of the access side, ms is a preset margin step length, and Mp is a preset proportional value; the value of the second preset threshold is as follows: mc-n Ms or Mc (1-n Mp). Wherein n is a set value.
In this embodiment, the bandwidth of the OSU channel is adjusted according to the client side traffic change, when the client side traffic becomes larger, the bandwidth of the OSU channel is correspondingly requested to be increased, and when the client side traffic becomes smaller, the bandwidth of the OSU channel is correspondingly requested to be decreased.
In some embodiments, the step of calculating the bandwidth adjustment policy according to the request of the device data plane in S200 includes the steps of:
and S210, comparing the access side real-time flow requesting bandwidth adjustment with the current OSU channel bandwidth, and if the access side real-time flow is larger than the current OSU channel bandwidth, taking the access side real-time flow as a target bandwidth of bandwidth adjustment.
In some embodiments, when the bandwidth adjustment policy is calculated according to the request of the device data plane in S200, if bandwidth adjustment requests from the source end and the sink end are received at the same time, the bandwidth adjustment policy is calculated according to the bandwidth adjustment request corresponding to the end with the larger traffic.
In this embodiment, considering that the source and destination nodes all sense traffic changes, and that the sensed traffic bandwidths may be different, in order to keep the bidirectional bandwidths of the OSU consistent, the bandwidth is adjusted based on the end with the larger bandwidth.
In some embodiments, the step S200 of calculating the bandwidth adjustment policy according to the request of the device data plane includes the steps of:
s220, comparing the access side real-time flow corresponding to the bandwidth adjustment request as a basis with the current OSU channel bandwidth, and recording the access side real-time flow as a first reference flow if the access side real-time flow is smaller than the current OSU channel bandwidth;
s230, taking the current flow of the end corresponding to the bandwidth adjustment request which is not used as the basis when the bandwidth adjustment requests from the source end and the destination end are received at the same time last time as a second reference flow;
and S240, taking the larger one of the first reference flow and the second reference flow as a target bandwidth of bandwidth adjustment.
In this embodiment, when there is an adjustment request reported by both ends at the previous time, the adjustment request is ignored due to a smaller traffic demand at one end, but the traffic demand is larger than the traffic demand of the reporting end at this time, so that the traffic demand that was ignored at the previous time can be taken care of.
In some embodiments, when the bandwidth adjustment policy is calculated in S200, the method includes:
and S251, calculating the final bandwidth value by adopting a step-by-step adjusting mode or a proportional adjusting mode on the basis of the target bandwidth. The step-by-step adjustment mode is used for calculating a final bandwidth value by using a preset margin step length on the basis of the target bandwidth, and the scale adjustment mode is used for calculating the final bandwidth value by using a preset scale value on the basis of the target bandwidth.
It is understood that the control plane calculates a final bandwidth value to be adjusted and sends the final bandwidth value to the device data plane, and the device data plane can adjust the OSU channel bandwidth to the final bandwidth value.
In this embodiment, it is considered that, since the bandwidth adjustment process needs to be performed node by node, it takes a certain time to complete the bandwidth adjustment process. And a certain margin is reserved for the bandwidth during bandwidth adjustment, so that the packet loss time caused by the unsatisfied bandwidth is reduced as much as possible. The purpose of using the step-by-step mode or the scaling mode is to leave a margin in bandwidth adjustment according to the set step size or the set scale.
Preferably, when the final bandwidth value is calculated by using the step size adjusting mode, the final bandwidth value is M + Ms, where M is the target bandwidth and Ms is a preset margin step size; when the final bandwidth value is calculated by using the scaling mode, the final bandwidth value is M (1 + Mp), where Mp is a preset scaling value.
Further, the preset margin step length and/or the preset proportion value can be adjusted according to the level of the target; when the margin step length is adjusted, the larger the level of the target bandwidth is, the larger the preset margin step length is; when the preset proportion value is adjusted, the larger the level of the target bandwidth is, the smaller the preset proportion value is.
In this embodiment, to better adapt to the change of the bandwidth, a "flexible step length" manner or a "flexible proportion" manner may be adopted to adjust the bandwidth. Preferably, when the bandwidth is in the order of hundred million and below, the step size of the adjustment is Ms, when the bandwidth is in the order of hundred million to 10G, the step size of the adjustment is 2 Ms, and when the bandwidth is above 10G, the step size of the adjustment is 4 Ms; or the ratio of the bandwidth is Mp/2 when the bandwidth is in the order of hundreds of megabits to 10G, and the ratio of the bandwidth is Mp/4 when the bandwidth is more than 10G.
In some embodiments, when there is a new user, the method includes the steps;
s300, the control plane distributes a preset bandwidth for the newly added user;
s400, the control plane takes the sum of the current bandwidth and the preset bandwidth of the OSU as a target of bandwidth adjustment and issues a device data plane;
and S500, the device data plane adjusts the bandwidth according to the bandwidth adjustment target.
In this embodiment, the pre-allocation of bandwidth for the new user is considered, so as to avoid the situation that the allocated bandwidth is too small due to only a small amount of control messages when the new user accesses, and the bandwidth needs to be adjusted for many times after the data traffic rises.
In a specific embodiment, as shown in fig. 2, a bandwidth adjustment template of the OSU channel is configured in advance, which includes the following:
s10, pre-distributing the flow Mn for the newly added user, such as 200Mbps;
s11, setting a preset margin step Ms (such as 50 Mbps) and a preset proportion value Mp (such as 5%);
s12, setting a bandwidth adjusting mode: step size adjustment mode or scale adjustment mode.
As shown in fig. 3, if n users have been accessed at the current client side, and the current OSU channel bandwidth is Mj, then after a new user n +1 is accessed, the OSU bandwidth is adjusted to Mj + Mn.
It will be appreciated that pre-configuration is typically performed at the management plane, and that the control plane will have default values if the management plane is not set.
And adjusting the bandwidth of the OSU pipeline according to the change of the client side flow, correspondingly increasing the bandwidth of the OSU channel when the client side flow is increased, and correspondingly reducing the bandwidth of the OSU channel when the client side flow is decreased.
As shown in fig. 5, in a specific embodiment, the bandwidth adjustment process includes:
s21, sensing the flow change of the port at the client side at the OSU channel endpoint, and uploading the flow bandwidth summation information to a control plane;
s22, if the flow exceeds the threshold value, triggering the bandwidth adjustment of the control plane;
s23, the control plane decides whether to adjust the bandwidth and the adjusted target bandwidth;
s24, if the OSU bandwidth needs to be adjusted, the control plane calculates whether the bandwidth resources on the path meet the adjustment requirement;
s25, if the requirement is met, the bandwidth of the OSU channel is adjusted node by using a signaling flow, and the step S27 is carried out;
s26, if not, adjusting the bandwidth to the maximum bandwidth capable of bearing as much as possible, and entering the step S28;
s27, if the adjustment is successful, the control plane informs the single disk and the network manager of the OSU channel bandwidth change and the residual resource update;
s28, if the adjustment fails, the control plane informs the network manager to prompt the user that the flow rate exceeds the limit, and whether to select a path to be recalculated is determined.
It should be noted that, here, a plurality of client-side traffic flows are mapped to one OSU channel, and the traffic bandwidth summation information refers to the sum of the plurality of client-side traffic bandwidths. The control plane calculates whether the bandwidth resources on the path meet the adjustment requirement, and since the control plane manages the bandwidth resources (how much bandwidth can be physically carried) of the whole network, when the bandwidth resources on the path meet the adjustment requirement, for example, a 100G link, a service bandwidth occupies 20G, and then the resources of other links remain 80G.
In a specific embodiment, if the current bandwidth of the OSU channel is Mj, the bandwidth requested by the source and sink node is Mi and Me, respectively, and the bandwidth requested last time is Mi 'and Me', the bandwidth adjustment policy includes:
if Mi is larger than Mj, the bandwidth is considered to be required to be adjusted to Mi;
if Me is larger than Mj, the bandwidth is considered to be required to be adjusted to Me;
if Mi < Mj, the bandwidth is considered to need to be adjusted to max { Mi, me '}, and Me' is assumed to be the bandwidth which is ignored in the last request;
if Me < Mj, then the bandwidth is considered to need to be adjusted to max { Me, mi '}, assuming that Mi' is the bandwidth that was ignored in the last request;
otherwise, no adjustment is made.
On the other hand, an embodiment of the present invention further provides a system for dynamically adjusting an OSU bandwidth, which is characterized in that the system includes:
the device data plane is used for triggering a bandwidth adjustment request according to the condition of bidirectional flow change of an access side source and/or a sink;
the control plane is used for calculating a bandwidth adjustment strategy according to the request of the equipment data plane and sending the strategy result to the equipment data plane for bandwidth adjustment so as to realize bandwidth dynamic adjustment;
the bandwidth adjustment strategy is used for adjusting the OSU channel bandwidth node by node through a signaling process so that the adjusted bandwidth can meet the flow demand of the access side.
In some embodiments, the device data plane is further to:
when the real-time flow of the access side is increased and reaches a first preset threshold value, sending a bandwidth increase adjustment request;
when the real-time flow of the access side is reduced and reaches a second preset threshold value, sending a bandwidth reduction adjustment request;
the first preset threshold is greater than the second preset threshold.
In some embodiments, the first preset threshold value is: mc-Ms or Mc (1-Mp), wherein Mc is real-time flow of the access side, ms is a preset margin step length, and Mp is a preset proportional value;
the value of the second preset threshold is as follows: mc-n Ms or Mc (1-n Mp). Wherein n is a set value.
In some embodiments, the calculating the bandwidth adjustment policy includes:
and comparing the access side real-time flow requesting bandwidth adjustment with the current OSU channel bandwidth, and if the access side real-time flow is larger than the current OSU channel bandwidth, taking the access side real-time flow as the target bandwidth of bandwidth adjustment.
In some embodiments, when the control plane calculates the bandwidth adjustment policy, the control plane is further configured to:
and if the bandwidth adjustment requests from the source end and the sink end are received at the same time, calculating a bandwidth adjustment strategy by taking the bandwidth adjustment request corresponding to the end with larger flow as a basis.
In some embodiments, when the control plane calculates the bandwidth adjustment policy, the control plane is further configured to:
comparing the access side real-time flow corresponding to the bandwidth adjustment request as a basis with the current OSU channel bandwidth, and recording the access side real-time flow as a first reference flow if the access side real-time flow is smaller than the current OSU channel bandwidth;
taking the current flow of the end corresponding to the bandwidth adjustment request which is not taken as the basis when the bandwidth adjustment requests from the source end and the sink end are received at the same time last time as a second reference flow;
and taking the larger one of the first reference flow and the second reference flow as a target bandwidth of bandwidth adjustment.
In some embodiments, when the control plane calculates the bandwidth adjustment policy, the control plane is further configured to:
calculating a final bandwidth value by adopting a step-length adjusting mode or a proportional adjusting mode on the basis of the target bandwidth;
the step-by-step adjustment mode is used for calculating a final bandwidth value by using a preset margin step length on the basis of the target bandwidth, and the scale adjustment mode is used for calculating the final bandwidth value by using a preset scale value on the basis of the target bandwidth.
In some embodiments, the control plane is further configured to:
when the final bandwidth value is calculated by adopting the step-length adjusting mode, the final bandwidth value is M + Ms, wherein M is the target bandwidth, and Ms is a preset margin step length;
when the final bandwidth value is calculated by using the scaling mode, the final bandwidth value is M (1 + Mp), where Mp is a preset scaling value.
In some embodiments, when there is a new user, the control plane further uses:
allocating a preset bandwidth for the newly added user;
taking the sum of the current bandwidth and the preset bandwidth of the OSU as a bandwidth adjustment target and issuing an equipment data plane;
the device data plane is also used for adjusting the bandwidth according to the bandwidth adjustment target.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, or suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable storage media, which may include computer readable storage media (or non-transitory media) and communication media (or transitory media).
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An OSU bandwidth adjustment method, characterized in that the method comprises the steps of:
the device data plane triggers a bandwidth adjustment request according to the condition of bidirectional flow change of an access side source and/or a sink;
the control plane calculates a bandwidth adjustment strategy according to the request of the equipment data plane and issues a strategy result to the equipment data plane for bandwidth adjustment so as to realize bandwidth dynamic adjustment;
the bandwidth adjustment strategy is used for adjusting the OSU channel bandwidth node by node through a signaling process so that the adjusted bandwidth can meet the flow demand of the access side.
2. The OSU bandwidth adjustment method of claim 1, wherein the device data plane triggers a bandwidth adjustment request according to a condition of bidirectional traffic change of an access side source and/or a sink, comprising the steps of:
when the real-time flow of the access side is increased and reaches a first preset threshold value, sending a bandwidth increase adjustment request;
when the real-time flow of the access side is reduced and reaches a second preset threshold value, sending a bandwidth reduction adjustment request;
the first preset threshold is greater than the second preset threshold.
3. The OSU bandwidth adjustment method of claim 2, wherein the first preset threshold value is: mc-Ms or Mc (1-Mp), wherein Mc is real-time flow of the access side, ms is a preset margin step length, and Mp is a preset proportional value;
the value of the second preset threshold is as follows: mc-n Ms or Mc (1-n Mp). Wherein n is a set value.
4. The OSU bandwidth adjustment method of claim 1, wherein said calculating a bandwidth adjustment policy comprises the steps of:
and comparing the access side real-time flow requesting bandwidth adjustment with the current OSU channel bandwidth, and if the access side real-time flow is larger than the current OSU channel bandwidth, taking the access side real-time flow as a target bandwidth of bandwidth adjustment.
5. The OSU bandwidth adjustment method of claim 1, wherein said calculating a bandwidth adjustment policy comprises the steps of:
and if the bandwidth adjustment requests from the source end and the sink end are received at the same time, calculating a bandwidth adjustment strategy by taking the bandwidth adjustment request corresponding to the end with larger flow as the basis.
6. The OSU bandwidth adjustment method of claim 5, wherein said calculating a bandwidth adjustment policy comprises the steps of:
comparing the access side real-time flow corresponding to the bandwidth adjustment request as a basis with the current OSU channel bandwidth, and recording the access side real-time flow as a first reference flow if the access side real-time flow is smaller than the current OSU channel bandwidth;
taking the current flow of the end corresponding to the bandwidth adjustment request which is not taken as the basis when the bandwidth adjustment requests from the source end and the sink end are received at the same time last time as a second reference flow;
and taking the larger one of the first reference flow and the second reference flow as a target bandwidth of bandwidth adjustment.
7. The OSU bandwidth adjustment method of any of claims 4 or 6, wherein the calculating a bandwidth adjustment policy comprises:
calculating a final bandwidth value by adopting a step-by-step adjustment mode or a proportional adjustment mode on the basis of the target bandwidth;
the step-by-step adjustment mode is used for calculating a final bandwidth value by using a preset margin step on the basis of the target bandwidth, and the proportional adjustment mode is used for calculating the final bandwidth value by using a preset proportional value on the basis of the target bandwidth.
8. The OSU bandwidth adjustment method of claim 7,
when the final bandwidth value is calculated by adopting the step length adjusting mode, the final bandwidth value is M + Ms, wherein M is the target bandwidth, and Ms is a preset margin step length;
when the final bandwidth value is calculated by using the scaling mode, the final bandwidth value is M (1 + Mp), where Mp is a preset scaling value.
9. The OSU bandwidth adjustment method of claim 1,
when there is a new user, the method comprises the steps;
the control plane distributes a preset bandwidth for the newly added user;
the control plane takes the sum of the current bandwidth and the preset bandwidth of the OSU as a bandwidth adjustment target and issues a device data plane;
and the equipment data plane adjusts the bandwidth according to the target of the bandwidth adjustment.
10. An OSU bandwidth dynamic adjustment system, comprising:
the device data plane is used for triggering a bandwidth adjustment request according to the condition of bidirectional flow change of an access side source and/or a sink;
the control plane is used for calculating a bandwidth adjustment strategy according to the request of the equipment data plane and sending a strategy result to the equipment data plane for bandwidth adjustment so as to realize bandwidth dynamic adjustment;
the bandwidth adjustment strategy is used for adjusting the OSU channel bandwidth node by node through a signaling process so that the adjusted bandwidth can meet the flow demand of the access side.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116192646A (en) * | 2022-12-29 | 2023-05-30 | 瑞斯康达科技发展股份有限公司 | Bandwidth adjustment method and system for OSU service |
| CN117294656A (en) * | 2023-11-24 | 2023-12-26 | 沐曦集成电路(南京)有限公司 | Multi-user-oriented dynamic bandwidth management system and method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116192646A (en) * | 2022-12-29 | 2023-05-30 | 瑞斯康达科技发展股份有限公司 | Bandwidth adjustment method and system for OSU service |
| CN117294656A (en) * | 2023-11-24 | 2023-12-26 | 沐曦集成电路(南京)有限公司 | Multi-user-oriented dynamic bandwidth management system and method thereof |
| CN117294656B (en) * | 2023-11-24 | 2024-03-12 | 沐曦集成电路(南京)有限公司 | Multi-user-oriented dynamic bandwidth management system and method thereof |
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