CN114340027A - Method, device, system and medium for improving resource utilization rate of network slice - Google Patents
Method, device, system and medium for improving resource utilization rate of network slice Download PDFInfo
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- CN114340027A CN114340027A CN202210064517.1A CN202210064517A CN114340027A CN 114340027 A CN114340027 A CN 114340027A CN 202210064517 A CN202210064517 A CN 202210064517A CN 114340027 A CN114340027 A CN 114340027A
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Abstract
The invention provides a method, equipment, a system and a storage medium for improving the resource utilization rate of network slices, which improve the utilization rate of wireless resources on the premise of meeting the mutual isolation of slice resources and the requirement of a Service Level Agreement (SLA), and the method comprises the following steps: after all the users belonging to one network slice are informed of finishing scheduling, if resources in the network slice are not used, dividing the resources which are not used in the network slice into system shared resources; and when other network slices are scheduled, allocating the system shared resources to the corresponding scheduled network slices, and if the scheduled network slices have unused resources after the scheduling is finished, dividing the unused resources into the system shared resources for the rest network slices to use during the scheduling.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method for improving the resource utilization rate of a network slice.
Background
Nowadays, wireless band resources are increasingly tense, and how to reasonably utilize the band resources is an important factor to be considered in each 5G technology, and for this reason, 5G introduces a Slicing (Network Slicing) technology.
Unlike the traditional 4G network "one pipe, best effort" form, the 5G network slice aims at providing a variety of end-to-end logical "private networks" based on unified infrastructure and unified network, optimally adapting to various business requirements of industry users. For example, the 5G requirements of users can be summarized into 2 categories according to factors such as performance indexes, function differences, requirements on networks, operation and maintenance modes, and the like: 1) public network user requirements: the service provided for the individual when the 4G is comprehensively inherited ensures consistent and even better user experience; 2) industry network user requirements. The 5G public network and the industry network are shared and separated. The public network and the industry network share a core network hardware resource pool, transmission resources and wireless resources, and the network scale effect is fully exerted; in addition, the user level of the public network and the user level of the industry network can be respectively isolated by the Internet of things code number and the public network code number, and can be independent of network elements, independent resources, independent base stations and the like, so that various flexible architectures and configuration modes are provided.
The slicing technology provides the capability of vertically dividing the network, provides mutually isolated network services with customizable functions for different vertical industries, different clients and different services, and is a logic network for providing specific network capability and characteristics. An example of a network slice is a set of network functions and required physical/virtual resources, which may specifically include an access network, a core network, a transport bearer network, and applications, and the network slice may be constructed based on conventional proprietary hardware or based on general infrastructure of NFV/SDN.
The 3GPP protocol specifies that the resources among the slices do not influence each other, and the slices can allocate shared resources and special resources so as to isolate the resources among the slices from each other, but idle resources in the slices cannot be shared by other slices, so that the wireless bandwidth cannot be maximized, and the wireless resources are wasted.
Disclosure of Invention
In view of the above problems, the present invention provides a method for improving resource utilization of network slices, which improves wireless resource utilization on the premise of satisfying the mutual isolation of slice resources and satisfying the requirements of Service Level Agreement (SLA).
The technical scheme is as follows: a method for improving resource utilization rate of network slices is characterized by comprising the following steps: after all the users belonging to one network slice are informed of finishing scheduling, if resources in the network slice are not used, dividing the resources which are not used in the network slice into system shared resources;
and when other network slices are scheduled, allocating the system shared resources to the corresponding scheduled network slices, and if the scheduled network slices have unused resources after the scheduling is finished, dividing the unused resources into the system shared resources for the rest network slices to use during the scheduling.
Further, when scheduling a user in a network slice, the upper limit of the resource allocated to the user is represented as:
the upper limit of the resource allocated by the user is the resource dedicated for the slice user + the resource shared by the system-the resource used by the network slice.
Furthermore, after a user in the network slice completes scheduling, the resource used by the corresponding user is added to the resource used by the network slice.
Furthermore, when a plurality of network slices in the wireless network are scheduled, the network slices with high priority are scheduled first according to the priority of the network slices.
Furthermore, when a plurality of users in the network slice are scheduled, the users with high priority are scheduled first according to the priority of the users.
A base station device comprising a memory, a communication interface, and a processor coupled to the memory and the communication interface; the memory is configured to store instructions, the processor is configured to execute the instructions, and the communication interface is configured to communicate with other devices under control of the processor; when the processor executes the instructions, the method for improving the resource utilization rate of the network slice is executed.
A communication system is characterized by comprising terminal equipment and the base station equipment.
A storage medium, wherein instructions in the storage medium, when executed by a processor of a device, enable the device to perform a method of improving resource utilization of a network slice as described above.
The method for improving the resource utilization rate of the network slice updates the system shared resource by using the rest resource through setting the system shared resource after one network slice finishes scheduling and if the distributed resource in the network slice is not used, the system shared resource is distributed to the scheduled network slice for use when other network slices schedule, thereby realizing the sharing of the idle resource in the network slice to other network slices and improving the utilization rate of the wireless resource.
Drawings
Fig. 1 is a schematic flow chart diagram illustrating a method for improving resource utilization of a network slice according to an embodiment of the disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Fig. 1 is a schematic flow chart diagram illustrating a method of improving resource utilization for a network slice in accordance with an embodiment of the present disclosure. The method for improving the resource utilization rate of the network slice shown in this embodiment may be applied to communication between a base station and a terminal, where the base station includes but is not limited to future base station devices such as a 5G base station and a 6G base station, the terminal may serve as a user device, and the terminal includes but is not limited to electronic devices such as a mobile phone, a tablet computer, a wearable device, a sensor, and an internet of things device.
As shown in fig. 1, a method for improving resource utilization of a network slice at least includes the following steps:
step 1: after all the users belonging to a network slice are informed of completing scheduling, if resources in the network slice are not used, the unused resources are divided into system shared resources,
the system shared resource can be used by the users belonging to the slice and the users belonging to the non-slice;
step 2: and when other network slices are scheduled, allocating the system shared resources to the corresponding scheduled network slices, and if the scheduled network slices have unused resources after the scheduling is finished, dividing the unused resources into the system shared resources for the rest network slices to use during the scheduling.
The 3GPP protocol only specifies that slices cannot influence each other, but unused resources in the slices cannot be shared by other slices, and wireless bandwidth resources cannot be fully used.
In one usage scenario: an operator configures 4 network slices s1, s2, s3, s4, network slice s1 may use 20% of the total bandwidth, network slice s2 may use 20% of the total bandwidth, network slice s3 may use 20% of the total bandwidth, and network slice s4 may use 40% of the total bandwidth. Over a period of time, s1 uses 80% of the allocated resources, i.e. 16% of the total bandwidth; network slice s2 uses 90% of the allocated resources, i.e. 18% of the total bandwidth; network slice s3 uses 100% of the allocated resources, i.e. 20% of the total bandwidth; the network slice s4 uses 50% of the allocated resources, i.e. 20% of the total bandwidth. Without inter-slice resource coordination, the system bandwidth will not be fully utilized, wasting 26% of the total bandwidth. Therefore, the method for improving the resource utilization rate of the network slice disclosed by the invention is applied.
In an embodiment of the present disclosure, the method for improving resource utilization of network slices is applied to user plane scheduling of a media access control layer (MAC layer) of a 5G NR base station, which can allocate resources meeting SLA requirements among different slices, and simultaneously give consideration to reasonable allocation of remaining resources among the slices, so as to maximize throughput of a cell.
The tasks of the user plane scheduling of the MAC layer are: 1) and allocating physical layer resources including physical uplink control channel resources to the terminal in the access process. 2) And selecting a terminal in each scheduling period, and distributing physical layer resources including a physical downlink control channel, a physical downlink shared channel, a physical uplink control channel and a physical uplink control channel for data transmission according to the data volume to be transmitted of the terminal and the channel condition. 3) The physical uplink control channel is allocated to the terminal for use according to the time, frequency band and code word triplets, and on the frequency band at the corresponding moment, the base station media access control layer and the physical layer need to perform corresponding processing no matter whether the terminal sends a message or not.
The MAC layer can sense the slice, process the flow in the slice, and can perform differentiated processing aiming at the flow of different slices.
In one embodiment of the present disclosure, the method comprises the following steps:
configuring four network slices s1, s2, s3, s4 in a 5G network;
initializing system shared resources;
according to the existing system scheduling algorithm, firstly, users to which the network slices s1 belong are scheduled;
after learning that the network slice s1 in the wireless network completes scheduling, if the allocated resources in the network slice s1 are not used, the MAC layer divides the unused resources in the network slice s1 into system shared resources;
in scheduling network slice s2, allocating system shared resources for use by network slice s 2;
after the MAC layer knows that the network slice s2 completes scheduling, if there are resources in the network slice s2 that are not used, the resources that are not used in the network slice s2 are divided into system shared resources;
in scheduling network slice s3, allocating system shared resources for use by network slice s 3;
after the MAC layer knows that the network slice s3 completes scheduling, if there are resources in the network slice s3 that are not used, the resources that are not used in the network slice s3 are divided into system shared resources;
in scheduling network slice s4, the system shared resources are allocated for use by network slice s 4.
The MAC layer can perceive the network slices, the MAC layer needs to meet the resource isolation requirement and SLA of each network slice in the scheduling process, on the basis, the MAC layer can know the resource use condition of the network slices, and idle resources are reasonably distributed to other network slices so as to achieve the maximum wireless resource utilization rate.
In other embodiments of the present disclosure, the number of network slices may be more or less.
In one embodiment, after the method of the present disclosure is adopted, after knowing that the user to which the network slice s1 belongs has been scheduled, the MAC layer finds that the network slice s1 still has a part of unused resources, and needs to update the system shared resources with the part of unused resources. When the network slice s2 is scheduled, the upper limit of the allocated resources is network slice s2 dedicated resources + network slice s2 shared resources + system shared resources; when the network slice s2 completes scheduling but has resources which are not completely allocated, the system shared resources need to be updated by the unused resources, then the scheduling of the network slice s3 is performed according to the same method, and the network slice s3 completely uses all the allocable resources; network slice s4 scheduling follows the same method, with network slice s4 using 50% of the allocable resources.
Specifically, network slice s1 is allocated to use 20% of the total bandwidth, network slice s2 is allocated to use 20% of the total bandwidth, network slice s3 is allocated to use 20% of the total bandwidth, and network slice s4 is allocated to use 40% of the total bandwidth. Firstly, scheduling the network slice s1, wherein 80% of the allocated resources actually used by the network slice s1, namely 16% of the total bandwidth, and 4% of the total bandwidth are divided into the system shared resources; then, the network slice s2 is scheduled, the network slice s2 actually uses 90% of the original allocated resources, namely 18% of the total bandwidth, and does not use the system shared resources, and at this time, 6% of the total bandwidth is divided into the system shared resources; then, the network slice s3 is scheduled, and the network slice s3 uses 100% of all allocated resources and all system shared resources, namely 26% of the total bandwidth; finally, scheduling of network slice s3 is performed, network slice s4 using 50% of the allocated resources, i.e. 20% of the total bandwidth.
In this embodiment, the network slice s3 uses 6% of the total bandwidth that the network slices s1 and s2 cannot use up, so that the idle resources in the slices are shared by other slices, the wireless bandwidth is maximally utilized as much as possible, and the waste of the wireless resources is avoided.
It should be noted that the terms "s 1", "s 2" and the like in the description of the present disclosure are used for distinguishing similar objects and are not necessarily used for describing a particular order or sequence.
In an embodiment of the present invention, when scheduling a user belonging to a network slice, the upper limit of resources allocated to the user is represented as:
the resource upper limit allocated by the user is the resource used by the network slice, the resource dedicated by the slice user can only be used by the slice user, the slice user can not be used by other users, the resource shared by the slice user is firstly used by the slice user, the resource dedicated by the slice user can not be used by other users, and the resource shared by the slice user have corresponding regulations in the 3GPP protocol.
After one user in the network slice completes scheduling, adding the used resource of the corresponding user in the used resource of the network slice, which is represented as: the resource used by the network slice is the resource used by the network slice plus the resource used by the user;
and repeating the steps to finish the scheduling of all users in the network slice.
In one embodiment of the present disclosure, when a plurality of network slices in a wireless network are scheduled, a network slice with a high priority may be scheduled first according to the priority of the network slice.
In the network slices s1, s2, s3 and s4, the priorities are s4, s2, s1 and s3 in sequence, the network slice s4 has the highest priority, the network slice s4 is scheduled first, the network slice s4 uses 50% of self-allocable resources, and 50% of unused resources are divided into system shared resources, then, the network s2 uses 100% of self-allocable resources + 50% of unused resources of s4 in the system shared resources, s1 uses 95% of self-allocable resources, and s3 uses 100% of self-allocable resources and 5% of unused resources of s1 in the system shared resources. This can achieve 100% use of the overall bandwidth of the system.
In one embodiment of the present disclosure, when scheduling a plurality of users in a network slice, according to the priorities of the users, the users with high priorities are scheduled first.
In an embodiment of the present invention, there is also provided a base station apparatus, including a memory, a communication interface, and a processor coupled with the memory and the communication interface; the memory is used for storing instructions, the processor is used for executing the instructions, and the communication interface is used for communicating with other equipment under the control of the processor; when the processor executes the instructions, the method for improving the resource utilization rate of the network slice is executed.
In an embodiment of the present invention, a communication system is further provided, which includes a terminal device and the above base station device.
In an embodiment of the present invention, there is also provided a storage medium, wherein instructions of the storage medium, when executed by a processor of a device, enable the device to perform the method of improving resource utilization of a network slice as described above.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware or in software executed by a processor. The software instructions may be composed of corresponding software modules, which may be stored in a Read-Only Memory (ROM), a Random Access Memory (RAM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), a One-time Programmable Read-Only Memory (OTPROM), electrically Erasable-rewritable Read-Only Memory (EEPROM), compact disc Read-Only Memory (CD-ROM) or other optical disk storage, magnetic tape storage, or any other medium capable of being used to carry or store data and readable by a computer or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be located in a base station device. Of course, the processor and the storage medium may reside as discrete components in a base station apparatus.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. And the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The method for improving the resource utilization rate of the network slice, the base station device, the communication system and the storage medium provided by the invention are introduced in detail, and a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A method for improving resource utilization rate of network slices is characterized by comprising the following steps:
after all the users belonging to one network slice are informed of finishing scheduling, if resources in the network slice are not used, dividing the resources which are not used in the network slice into system shared resources;
and when other network slices are scheduled, allocating the system shared resources to the corresponding scheduled network slices, and if the scheduled network slices have unused resources after the scheduling is finished, dividing the unused resources into the system shared resources for the rest network slices to use during the scheduling.
2. The method of claim 1, wherein the method comprises: when scheduling a user in a network slice, the upper limit of resources allocated to the user is represented as:
the upper limit of the resource allocated by the user is the resource dedicated for the slice user + the resource shared by the system-the resource used by the network slice.
3. The method of claim 2, wherein the method comprises: after one user in the network slice finishes scheduling, adding the used resources of the corresponding user in the used resources of the network slice.
4. The method of claim 1, wherein the method comprises: when scheduling multiple network slices in a wireless network, the scheduling order of the network slices can be adjusted.
5. The method of claim 4, wherein the resource utilization of the network slice is performed by: when a plurality of network slices in a wireless network are scheduled, the network slices with high priority are scheduled first according to the priority of the network slices.
6. The method of claim 1, wherein the method comprises: when a plurality of users in the network slice are scheduled, the users with high priority are scheduled first according to the priority of the users.
7. A base station apparatus, characterized in that: comprising a memory, a communication interface, and a processor coupled to the memory and the communication interface; the memory is configured to store instructions, the processor is configured to execute the instructions, and the communication interface is configured to communicate with other devices under control of the processor; when the processor executes the instructions, the method for improving the resource utilization rate of the network slice is executed.
8. A communication system, characterized by: comprising a terminal device and a base station device as claimed in claim 7.
9. A storage medium, characterized by: the instructions in the storage medium, when executed by a processor of an apparatus, enable the apparatus to perform a method of improving resource utilization of a network slice as claimed in any of claims 1 to 5.
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Effective date of registration: 20230404 Address after: No. 138, Taodu Road, Dingshu Town, Yixing City, Wuxi City, Jiangsu Province, 214200 Applicant after: JIANGSU HENGXIN TECHNOLOGY Co.,Ltd. Applicant after: JIANGSU HENGXIN WIRELESS TECHNOLOGY Co.,Ltd. Address before: No. 138, Taodu Road, Dingshu Town, Yixing City, Wuxi City, Jiangsu Province, 214200 Applicant before: Jiangsu Hengxin Zhonglian Communication Technology Co.,Ltd. |