CN110881199A - Dynamic allocation method, device and system for network slice resources - Google Patents
Dynamic allocation method, device and system for network slice resources Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for dynamically distributing network slice resources, wherein the method comprises the following steps: acquiring flow on a tenant network slice and received initial network slice resources; judging whether a triggering condition for adjusting and distributing network slice resources is met; if yes, determining a limiting condition and an objective function for adjusting network slice resources allocated to the tenant network slice; determining network slice resources meeting the limiting conditions; and solving the objective function according to the network slice resources meeting the limiting conditions to obtain the network slice resources to be adjusted and allocated to the tenant network slices. By implementing the method and the device, the network slice resources to be adjusted and allocated to the tenant network slices are determined by combining the resources allocated to the tenant network slices and the flow information on the tenant network slices, and when the flow changes continuously, the problems of insufficient network slice resource utilization or network slice resource overload existing in the prior related art are solved, and the resource utilization rate is improved.
Description
Technical Field
The invention relates to the field of 5G local transmission networks, in particular to a method, a device and a system for dynamically allocating network slice resources.
Background
With the rapid improvement of the scientific and technical level, a plurality of application scenarios will appear in the fifth generation mobile communication network in the future, wherein three typical application scenarios are enhanced mobile broadband, large machine type communication and key machine type communication. The 5G network must be more flexible than previous generations to achieve fully connected low latency, high capacity and high reliability requirements, thereby proposing the concept of network slicing, i.e. building different network slices as needed, using software defined networks and network function virtualization techniques on the physical infrastructure. With network slicing techniques, a single physical network can be divided into multiple virtual networks, allowing operators to provide optimal support for different types of services for different types of customer groups. The operator may recursively slice its network slices according to its needs and allocate appropriate resources to each slice.
The existing technology for adjusting resources in a network slice mainly comprises the following steps: designing an evaluation function, and solving an optimal solution of bandwidth resources by using a particle swarm optimization algorithm, or dividing slice resources in a communication network into shared slices and special slices, or updating the available network slice resource capacity value in real time and expanding the capacity of the network slices. The above technology mainly combines some inherent technologies with the fifth generation mobile communication technology to select and make resource allocation strategies. However, in the prior art, resources are mostly statically allocated, and statically allocated network slice resources cannot adapt to the situation that the traffic rate on the network slice and the number of users change in real time, so that when the traffic changes continuously, the defects of insufficient utilization of the network slice resources or overload of the network slice resources exist.
Disclosure of Invention
The invention aims to overcome the defects of insufficient utilization of network slice resources or overload of the network slice resources when the flow is continuously changed in the prior art, and provides a method, a device and a system for dynamically distributing the network slice resources.
According to a first aspect, an embodiment of the present invention discloses a method for dynamically allocating network slice resources, where the method includes: acquiring flow on a tenant network slice and received initial network slice resources; judging whether a triggering condition for adjusting and distributing the network slice resources is met or not according to the flow and the initial network slice resources; if the triggering condition is met, determining and adjusting a limiting condition and an objective function of the network slice resource distributed to the tenant network slice according to the flow and the initial network slice resource; determining network slice resources meeting the limiting conditions; and solving an objective function according to the network slice resources meeting the limiting conditions to obtain the network slice resources to be adjusted and allocated to the tenant network slices.
With reference to the first aspect, in a first implementation manner of the first aspect, the acquiring traffic on the tenant network slice includes: acquiring the current traffic rate on the tenant network slice and the retention time of the current traffic rate; calculating traffic on the tenant network slice according to the following formula:
F＝R*L，
wherein F represents traffic on the tenant network slice, R represents the current traffic rate of the tenant network slice, and L represents a time for which the current traffic rate is maintained.
With reference to the first aspect, in a second implementation manner of the first aspect, the trigger condition for adjusting allocation of the network slice resources is determined by: acquiring the usable range of the initial network slice resource; obtaining a first network slice resource and a second network slice resource which can be used by the initial network slice resource according to the usable range, wherein the first network slice resource is smaller than the second network slice resource; determining the trigger condition to be less than the first network slice resource or greater than the second network slice resource.
With reference to the second implementation manner of the first aspect, in a third implementation manner of the first aspect, the first network slice resource is calculated by the following formula:
BL＝βL*B
wherein, BLRepresenting the first network slice resource, βLRepresenting a preset first utilization rate of the initial network slice resource, and B representing the initial network slice resource received by the tenant network slice;
the second network slice resource is calculated by the following formula:
BH＝βH*B
wherein, BHRepresenting the second network slice resource, βHRepresenting a preset second utilization of the initial network slice resource.
With reference to the first aspect, in a fourth implementation manner of the first aspect, the initial network slice resource received by the tenant network slice is greater than a minimum network slice resource guaranteed to be normally used by the tenant network slice.
With reference to the first aspect, in a fifth embodiment of the first aspect, the limiting conditions are:
wherein, there are m tenants in a network slice, that is, there are m tenant network slices, y represents the resource adjustment cost of the network sliceiRepresenting a resource adjustment cost, B, for an ith tenant network slice of the network slicesiRepresenting the initial network slice resource received by the ith tenant network slice,
and the resource distributed after the ith tenant network slice is adjusted is represented, and T represents a preset cost threshold value.
With reference to the first aspect, in a sixth implementation manner of the first aspect, the objective function is:
wherein the content of the first and second substances,
mean resource utilization, λ, representing a slice of a network where there are m tenantsiAnd expressing the resource utilization rate of the ith tenant network slice, and calculating by the following formula:
wherein, bjAnd the traffic of the j user on the ith tenant network slice is represented, and the tenant network slice has n users in total.
According to a second aspect, an embodiment of the present invention discloses a device for dynamically allocating network slice resources, including: the acquisition module is used for acquiring the flow on the tenant network slice and the received initial network slice resources; the judging module is used for judging whether a triggering condition for adjusting and distributing the network slice resources is met or not according to the flow and the initial network slice resources; a first determining module, configured to determine, if the trigger condition is satisfied, a constraint condition and an objective function for adjusting network slice resources allocated to the tenant network slice according to the traffic and the initial network slice resources; a second determining module, configured to determine a network slice resource that satisfies the constraint condition; and the solving module is used for solving an objective function according to the network slice resources meeting the limiting conditions to obtain the network slice resources to be adjusted and distributed to the tenant network slices.
According to a third aspect, an embodiment of the present invention discloses a system for dynamically allocating network slice resources, including: at least one control device, configured to perform the steps of the method for dynamically allocating network slice resources as described in the first aspect or any implementation manner of the first aspect, and adjust and allocate the network slice resources according to the obtained traffic on the tenant network slice and the received initial network slice resources.
According to a fourth aspect, an embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the method for dynamically allocating network slice resources as described in the first aspect or any of the embodiments of the first aspect.
The technical scheme of the invention has the following advantages:
the invention provides a dynamic allocation method of network slice resources, which comprises the following steps: acquiring flow on a tenant network slice and received initial network slice resources; judging whether a triggering condition for adjusting and distributing network slice resources is met; if yes, determining a limiting condition and an objective function for adjusting network slice resources allocated to the tenant network slice; determining network slice resources meeting the limiting conditions; and solving the objective function according to the network slice resources meeting the limiting conditions to obtain the network slice resources to be adjusted and allocated to the tenant network slices. By implementing the method and the device, the network slice resources to be adjusted and allocated to the tenant network slices are determined by combining the resources allocated to the tenant network slices and the flow information on the tenant network slices, so that the problems of insufficient network slice resource utilization or network slice resource overload existing when the flow changes continuously are solved, and the resource utilization rate is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a specific example of a method for dynamically allocating network slice resources in embodiment 1 of the present invention;
fig. 2 is a flowchart of a specific example of acquiring traffic on a tenant network slice in a method for dynamically allocating network slice resources in embodiment 1 of the present invention;
fig. 3 is a flowchart of a specific example of a trigger condition for allocating network slice resources in a dynamic allocation method for network slice resources in embodiment 1 of the present invention;
fig. 4 is a schematic block diagram of a specific example of an apparatus for dynamically allocating network slice resources in embodiment 2 of the present invention;
fig. 5 is a block diagram illustrating a specific example of a control device in a system for dynamically allocating network slice resources according to embodiment 3 of the present invention;
fig. 6 is a block diagram of a first controller in a control device in a system for dynamically allocating network slice resources according to embodiment 3 of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the invention provides a dynamic allocation method of network slice resources, which is applied to a specific application scene of reallocating the resources in the network slices in a 5G communication network, and particularly, the 5G communication network has three typical application scenes, namely enhanced mobile broadband, large machine type communication and key machine type communication. The enhanced mobile broadband is a communication network which improves the performance such as user experience and the like by improving the channel coding and decoding technology on the basis of the existing mobile broadband service scene; the large-scale machine communication refers to a communication network for information interaction between people and objects; the key machine type communication is a communication network for performing information interaction between objects. The method provided by the embodiment of the invention can be applied to different 5G communication networks, readjusts the network slice resources in the communication networks, and allocates the network slice resources to different tenants according to requirements.
Example 1
The embodiment of the present invention provides a dynamic allocation method for network slice resources, which can be applied in a specific application scenario in which network slice resources are adjusted according to requirements in a 5G communication network, and the dynamic allocation method for network slice resources in this embodiment, as shown in fig. 1, includes the following steps:
step S11: and acquiring the traffic on the tenant network slice and the received initial network slice resources. Specifically, a Network slice is constructed according to different scenes and requirements of users through Software Defined Networking (SDN) and Network Function Virtualization (NFV) technologies on a physical infrastructure; through a network slicing technology, a single physical network can be divided into a plurality of virtual networks, so that an operator is allowed to provide optimal support of different types of services for different types of customer groups, namely, a plurality of different tenants can exist in one network slice, and the tenants require logic isolation, so that different tenant networks are divided as required, namely, different tenant network slices are divided, and therefore network slice resources can be flexibly distributed to the tenants as required. The logical isolation means that although physical data channel connection lines exist among different tenants, no data channel exists; the received initial network slice resource refers to a network slice resource allocated to the tenant by the network slice according to the real-time requirement of the tenant, and specifically, the network slice resource may be a parameter index on the network slice, such as a bandwidth, a throughput, and the like.
Step S12: judging whether a triggering condition for adjusting and distributing network slice resources is met or not according to the flow and the initial network slice resources; in this embodiment, whether a triggering condition for adjusting and allocating network slice resources is met is determined according to calculated traffic information flowing on a tenant network slice and received network slice resources allocated to tenants by the network slice, specifically, the triggering condition is that initial network slice resources are smaller than the lowest allocated network slice resources or larger than the highest allocated network slice resources, for example, users on the tenant network slice increase suddenly, so that traffic on the tenant network slice increases suddenly at this time, congestion is caused, and the amount of the allocated network slice resources needs to be adjusted; users on the tenant network slice are suddenly reduced, which causes the waste of network slice resources, and at this time, the amount of the allocated network slice resources also needs to be adjusted.
Step S13: if the triggering condition is met, determining and adjusting the limiting condition and the objective function of the network slice resources distributed to the tenant network slice according to the flow and the initial network slice resources; specifically, when the triggering condition is met, the resources allocated by the network slice to be adjusted are calculated, for example, when users on the tenant network slice increase suddenly, the traffic on the tenant increases suddenly at this time, the initial network slice resources cannot meet the needs of the users, and the network slice resources need to be increased. In this embodiment, the constraint condition may be that the cost of readjusting the network slice resource is less than a preset cost threshold of readjusting the network slice resource, and the objective function may be a formula for specifically solving the readjusted network slice resource.
Step S14: determining network slice resources meeting the limiting conditions; in the present embodiment, the limiting conditions are:
wherein, there are m tenants in the network slice, that is, there are m tenant network slices, y represents the resource adjustment cost of the network slice, yiRepresenting resource adjustment cost of ith tenant network slice in network slices, BiRepresenting the initial network slice resources received by the ith tenant network slice,
and the resource distributed after the ith tenant network slice is adjusted is represented, and T represents a preset cost threshold value.
Step S15: and solving the objective function according to the network slice resources meeting the limiting conditions to obtain the network slice resources to be adjusted and allocated to the tenant network slices. Specifically, the network slice resource to be adjusted and allocated to the tenant is specifically solved on the condition that the adjustment cost is less than the preset cost threshold.
The invention discloses a dynamic allocation method of network slice resources, which comprises the following steps: acquiring flow on a tenant network slice and received initial network slice resources; judging whether a triggering condition for adjusting and distributing network slice resources is met; if yes, determining a limiting condition and an objective function for adjusting network slice resources allocated to the tenant network slice; determining network slice resources meeting the limiting conditions; and solving the objective function according to the network slice resources meeting the limiting conditions to obtain the network slice resources to be adjusted and allocated to the tenant network slices. By implementing the method and the device, the network slice resources to be adjusted and allocated to the tenant network slices are determined by combining the resources allocated to the tenant network slices and the flow information on the tenant network slices, and when the flow continuously changes, the problems of insufficient utilization of the network slice resources or overload of the network slice resources in the prior related art are solved, the resource utilization rate is improved, the benefits of the tenant network slices are improved, and the satisfaction degree of users is increased.
Optionally, in an embodiment, as shown in fig. 2, when step S11 is executed, the method for dynamically allocating network slice resources provided by the present invention specifically includes:
step S21: acquiring the current traffic rate on the tenant network slice and the retention time of the current traffic rate; specifically, traffic information flowing on the tenant network slice changes continuously, for example, the traffic rate flowing per second is different, the duration of traffic flowing is also different, and when the change of traffic meets a certain condition, the network slice resources allocated to the tenant are readjusted.
And step S22, calculating the traffic on the tenant network slice, wherein in the embodiment, the traffic on the tenant network slice is calculated by the following formula:
F＝R*L，
wherein, F represents traffic on the tenant network slice, R represents the current traffic rate of the tenant network slice, and L represents the time for which the current traffic rate is maintained.
According to the dynamic allocation method for the network slice resources, provided by the invention, through the implementation of the step, as the users on the tenants can be suddenly reduced or increased, the flow flowing on the tenant network slice is continuously changed.
Optionally, in an embodiment, as shown in fig. 3, before executing step S12, the method for dynamically allocating network slice resources provided by the present invention determines a trigger condition for adjusting allocation of network slice resources, and includes the specific steps of:
step S31, obtaining the usable range of the initial network slice resource, in this embodiment, the initial network slice is the initial network slice resource allocated to the tenant by the network slice, specifically, the initial network slice resource may be bandwidth, which is represented by B, and the utilization rate of the initial network slice resource, that is, the resource utilization rate of the initial bandwidth, may be βL、βHSpecifically, since the tenant does not fully use the allocated bandwidth, there is a minimum utilization of the bandwidth, βLIndicating the highest utilization of bandwidth, βHIt is shown that the usable range of the initial bandwidth can be calculated by the following formula:
for example, the first bandwidth value is calculated by the following formula:
BL＝βL*B，
wherein, BLIndicating a first bandwidth value, βLRepresenting a first utilization of a preset initial bandwidth;
for another example, the second bandwidth value is calculated by the following formula:
BH＝βH*B，
wherein, BHIndicating a second bandwidth value, βHA second utilization rate representing a preset initial bandwidth.
Step S32 according to the usable rangeObtaining a first network slice resource and a second network slice resource which can be used by the initial network slice resource, wherein the first network slice resource is smaller than the second network slice resource; in this embodiment, the network slice resource may be a bandwidth, and a first bandwidth value and a second bandwidth value may be obtained according to a usable range of an initial bandwidth, specifically, the first bandwidth value may be BLIndicating that the tenant can use the lowest value of the allocated initial bandwidth, the second bandwidth value, which can be BHIndicating that the tenant can use the highest value of the allocated initial bandwidth.
And step S33, determining the trigger condition as that the flow on the tenant network slice is smaller than the first network slice resource or larger than the second network slice resource. In this embodiment, when the lowest value of the initial network slice resources allocated to the tenant can be used is greater than the traffic flowing on the tenant network slice at this time, the situation that the unused network slice resources are too much exists at this time, which may cause resource waste and affect the income of the tenant, and when the highest value of the initial network slice resources allocated to the tenant can be used is less than the traffic flowing on the tenant network slice at this time, the situation that the available network slice resources are insufficient at this time may cause transmission congestion and affect the communication on the tenant network slice; therefore, the triggering condition for readjusting the network slice resources is determined as that the flow on the tenant network slice is smaller than the first network slice resources or larger than the second network slice resources, that is, smaller than the lowest value of the initial network slice resources that the tenant can use and is allocated and larger than the highest value of the initial network slice resources that the tenant can use, and the condition to be satisfied is that the initial network slice resources received by the tenant network slice are larger than the lowest network slice resources that the tenant network slice is guaranteed to normally use, which is a precondition that the tenant network slice can use.
The dynamic allocation method of the network slice resources determines the triggering condition for readjusting and allocating the network slice resources by implementing the step, and particularly determines the relation between the value of the allocated initial network slice resources which can be used by the tenant and the flow information flowing through the network slice of the tenant at the moment, thereby avoiding the defect that the network slice resources of the tenant are adjusted due to the small increase or the small decrease of the flow on the network slice of the tenant, and improving the resource utilization rate of the network slice of the tenant and the efficiency for allocating the network slice resources.
Optionally, in an embodiment, the method for dynamically allocating network slice resources provided by the present invention further includes: m tenants exist in the network slice, and the initial network slice resource received by the ith tenant network slice is BiThe unit price of rented network slice resources from the network infrastructure provider is CiNetwork slice resource unit income is gi。
When the number of users on the ith tenant network slice is suddenly increased, and the actual flow generated on the tenant network slice gradually approaches the received initial network slice resource, the actual benefit of the ith tenant network slice can be calculated by the following formula:
Fi＝Uigi-Bici，
wherein, FiFor the actual benefit of the ith tenant network slice, UiFor actual traffic on the ith tenant network slice, BiAn initial network slice resource received for an ith tenant network slice.
At this time, the resource utilization η of the ith tenant network slice can be calculated by the following formula:
Ui＝ηBi，
when users on the tenant network slice suddenly increase, the network slice resources of the tenants need to be improved, and the income of the tenants after the network slice resources are improved
Can be calculated by the following formula:
wherein
And adjusting the distributed network slice resource value for the ith tenant network slice, and determining the resource utilization rate of the ith tenant network slice. The difference in return Δ F is:
therefore, the higher the resource utilization rate is, the higher the profit of the tenant network slice is.
Similarly, when the number of users on the ith tenant network slice is suddenly reduced, that is, the actually generated traffic is much smaller than the received initial network slice resource, the network slice resource received by the tenant network slice needs to be reduced, and the same conclusion is also drawn through a similar process, where the higher the resource utilization rate is, the higher the benefit of the tenant network slice is, and the specific process is not repeated here.
As an optional implementation manner of this application, the method for dynamically allocating network slice resources provided in the embodiment of the present invention further includes determining, through simulation, a resource utilization rate of the dynamically allocated network slice resources and the non-dynamically allocated network slice resources, and specifically includes:
on different tenant network slices, simulation is carried out according to the simulation parameters set in the following table 1:
TABLE 1
| Group | βL | βH | y1 | y2 | y3 | L |
| 1 | 0.3 | 0.78 | 0.95 | 1.95 | 2.85 | 1 |
| 2 | 0.2 | 0.86 | 0.95 | 1.95 | 2.85 | 1 |
| 3 | 0.1 | 0.92 | 0.95 | 1.95 | 2.85 | 1 |
We envision two solutions to achieve radio resource allocation between network slices. Firstly, dynamically allocating network slice resources; second, network slice resources are allocated non-dynamically. Comparing the two resource adjusting methods through simulation results, as shown in the following table 2, displaying the utilization rate data of the dynamic resource allocation network slice resources; as shown in table 3 below, the utilization rate data of the non-dynamic resource allocation network slice resource is displayed; comparing table 2 with table 3, it can be concluded that the dynamic resource allocation network slice resource scheme can maintain the utilization rate of the network slice resources between 20% and 80%, and make the utilization rate of all network slices high; in the non-dynamic resource allocation network slice resource scheme, the bandwidth resource utilization of some network slices exceeds 80%, approaching 100%, which is likely to cause network congestion. Therefore, the dynamic resource allocation network slice resource scheme can be proved to improve the utilization rate of the whole network resource, reduce resource waste and improve user experience.
TABLE 2
TABLE 3
Example 2
An embodiment of the present invention provides a dynamic allocation apparatus for network slice resources, which is applied in a specific application scenario in which network slice resources are adjusted according to requirements in a 5G communication network, and as shown in fig. 4, the dynamic allocation apparatus includes:
the obtaining module 41 is configured to obtain traffic on the tenant network slice and the received initial network slice resource, and the detailed implementation content may refer to the related description of step S11 in the foregoing method embodiment.
The determining module 42 is configured to determine whether a trigger condition for adjusting and allocating network slice resources is met according to the traffic and the initial network slice resources, and the detailed implementation contents may refer to the related description of step S12 in the foregoing method embodiment.
The first determining module 43 is configured to determine, if the triggering condition is met, a limiting condition and an objective function for adjusting the network slice resource allocated to the tenant network slice according to the traffic and the initial network slice resource, and the detailed implementation contents may be referred to the related description of step S13 in the above method embodiment.
The second determining module 44 is configured to determine a network slice resource that satisfies the constraint condition, and the detailed implementation content can be referred to the related description of step S14 in the above method embodiment.
The solving module 45 is configured to solve the objective function according to the network slice resources meeting the constraint condition, so as to obtain the network slice resources to be adjusted and allocated to the tenant network slice, and the detailed implementation contents may be referred to the related description of step S15 in the foregoing method embodiment.
The invention provides a dynamic allocation device of network slice resources, which acquires flow on a tenant network slice and received initial network slice resources through an acquisition module 41; judging whether a triggering condition for adjusting and distributing network slice resources is met or not through a judging module 42; if yes, determining, by the first determining module 43, a constraint condition and an objective function for adjusting the network slice resources allocated to the tenant network slice; determining, by the second determining module 44, network slice resources that satisfy the constraint; according to the network slice resources meeting the limiting conditions, the objective function is solved through the solving module 45, and the network slice resources to be adjusted and allocated to the tenant network slices are obtained. By implementing the method and the device, the network slice resources to be adjusted and allocated to the tenant network slices are determined by combining the resources allocated to the tenant network slices and the flow information on the tenant network slices, and when the flow changes continuously, the problems of insufficient network slice resource utilization or network slice resource overload existing in the prior related art are solved, and the resource utilization rate is improved.
Example 3
An embodiment of the present invention provides a system for dynamically allocating network slice resources, which includes at least one control device 51, where the control device 51 is configured to execute the steps of the method for dynamically allocating network slice resources according to any one of the foregoing embodiments.
As shown in fig. 5, the control device 51 includes:
the first communication module 511: the method is used for transmitting data and receiving the flow on the tenant network slice and the received initial network slice resource information. The first communication module can be a Bluetooth module and a Wi-Fi module, and then communication is carried out through a set wireless communication protocol.
The first controller 512: connected to the first communication module 511, as shown in fig. 6, includes: at least one processor 61; and a memory 62 communicatively coupled to the at least one processor 61; in the embodiment, the first communication module may be a wireless communication module, such as a bluetooth module, a Wi-Fi module, or the like, or a wired communication module, and in this embodiment, the processor 61 and the memory 62 are connected through a bus 60, for example, one processor in fig. 6 is taken as an example, so that the at least one processor 61 executes the dynamic allocation method of network slice resources shown in fig. 1 when parameter information is received. The transmission between the first controller 512 and the first communication module 511 is a wireless transmission.
The memory 62, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the dynamic allocation method of network slice resources in the embodiments of the present application. The processor 61 executes various functional applications of the server and data processing, i.e. the dynamic allocation method of network slice resources implementing the above-described method embodiments, by running non-transitory software programs, instructions and modules stored in the memory 62.
The memory 62 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of a processing device operated by the server, and the like. Further, the memory 62 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 62 may optionally include memory located remotely from the processor 61, which may be connected to a network connection device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more modules are stored in the memory 62 and, when executed by the one or more processors 61, perform the method described in any of the above embodiments.
The dynamic allocation system for network slice resources provided by the embodiment of the present invention receives the traffic on the tenant network slice and the received initial network slice resource information through the first communication module 511 in the control device 51, upon receiving traffic on the tenant network slice and the received initial network slice resource information, determining by the first controller 512 whether a trigger condition for adjusting allocation of the network slice resources is satisfied, and further determines to adjust the network slice resources allocated to the tenant network slice, solves the problems of the prior related art, when the flow is changed continuously, the defects of insufficient utilization of network slice resources or overload of the network slice resources exist, the resources required by the tenant network slice can be better matched with the allocated resources, so that the resource utilization rate of the network slice is improved, and unnecessary waste of network slice resources is also saved.
Example 4
The embodiment of the present invention further provides a non-transitory computer readable medium, where the non-transitory computer readable storage medium stores a computer instruction, and the computer instruction is used to enable a computer to execute the method for dynamically allocating network slice resources described in any one of the above embodiments, where the storage medium may be a magnetic Disk, an optical Disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a flash Memory (FlashMemory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), or a Solid-State Drive (SSD); the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A method for dynamically allocating network slice resources is characterized by comprising the following steps:
acquiring flow on a tenant network slice and received initial network slice resources;
judging whether a triggering condition for adjusting and distributing the network slice resources is met or not according to the flow and the initial network slice resources;
if the triggering condition is met, determining and adjusting a limiting condition and an objective function of the network slice resource distributed to the tenant network slice according to the flow and the initial network slice resource;
determining network slice resources meeting the limiting conditions;
and solving an objective function according to the network slice resources meeting the limiting conditions to obtain the network slice resources to be adjusted and allocated to the tenant network slices.
2. The method of claim 1, wherein the obtaining traffic on the tenant network slice comprises:
acquiring the current traffic rate on the tenant network slice and the retention time of the current traffic rate;
calculating traffic on the tenant network slice according to the following formula:
F＝R*L，
wherein F represents traffic on the tenant network slice, R represents the current traffic rate of the tenant network slice, and L represents a time for which the current traffic rate is maintained.
3. The method of claim 1, wherein the trigger condition for adjusting the allocation of the network slice resources is determined by:
acquiring the usable range of the initial network slice resource;
obtaining a first network slice resource and a second network slice resource which can be used by the initial network slice resource according to the usable range, wherein the first network slice resource is smaller than the second network slice resource;
determining the trigger condition as traffic on the tenant network slice being less than the first network slice resource or greater than the second network slice resource.
4. The method of claim 3, wherein the dynamic allocation of network slice resources comprises:
the first network slice resource is calculated by the following formula:
BL＝βL*B
wherein, BLRepresenting the first network slice resource, βLRepresenting a preset first utilization rate of the initial network slice resource, and B representing the initial network slice resource received by the tenant network slice;
the second network slice resource is calculated by the following formula:
BH＝βH*B
wherein, BHRepresenting the second network slice resource, βHRepresenting a preset second utilization of the initial network slice resource.
5. The method of claim 1, wherein the initial network slice resources received by the tenant network slice are greater than the minimum network slice resources guaranteed to be normally used by the tenant network slice.
6. The method of claim 1, wherein the dynamic allocation of network slice resources,
the limiting conditions are as follows:
wherein, there are m tenants in a network slice, that is, there are m tenant network slices, y represents the resource adjustment cost of the network sliceiRepresenting a resource adjustment cost, B, for an ith tenant network slice of the network slicesiRepresenting the initial network slice resource received by the ith tenant network slice,
and the resource distributed after the ith tenant network slice is adjusted is represented, and T represents a preset cost threshold value.
7. The method of claim 1, wherein the dynamic allocation of network slice resources,
the objective function is:
wherein the content of the first and second substances,
mean resource utilization, λ, representing a slice of a network where there are m tenantsiAnd expressing the resource utilization rate of the ith tenant network slice, and calculating by the following formula:
wherein, bjAnd the traffic of the j user on the ith tenant network slice is represented, and the tenant network slice has n users in total.
8. An apparatus for dynamically allocating network slice resources, comprising:
the acquisition module is used for acquiring the flow on the tenant network slice and the received initial network slice resources;
the judging module is used for judging whether a triggering condition for adjusting and distributing the network slice resources is met or not according to the flow and the initial network slice resources;
a first determining module, configured to determine, if the trigger condition is satisfied, a constraint condition and an objective function for adjusting network slice resources allocated to the tenant network slice according to the traffic and the initial network slice resources;
a second determining module, configured to determine a network slice resource that satisfies the constraint condition;
and the solving module is used for solving an objective function according to the network slice resources meeting the limiting conditions to obtain the network slice resources to be adjusted and distributed to the tenant network slices.
9. A system for dynamic allocation of network slice resources, comprising:
at least one control device for performing the steps of the method for dynamic allocation of network slice resources according to any one of claims 1 to 7, the network slice resources being allocated in an adjusted manner according to the traffic on the acquired tenant network slice and the received initial network slice resources.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for dynamic allocation of network slice resources according to any one of claims 1 to 7.
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| CN113038488A (en) * | 2021-03-09 | 2021-06-25 | 广东海格怡创科技有限公司 | Link planning method and device for network slice, computer equipment and storage medium |
| CN115701043A (en) * | 2021-07-14 | 2023-02-07 | 南宁富联富桂精密工业有限公司 | Network slice management method and device and computer readable storage medium |
| CN114124712A (en) * | 2021-11-03 | 2022-03-01 | 中盈优创资讯科技有限公司 | Novel network-based hard slice dynamic capacity expansion and reduction method |
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