CN113329446B - Resource allocation method and device for network slices - Google Patents

Resource allocation method and device for network slices Download PDF

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CN113329446B
CN113329446B CN202110500865.4A CN202110500865A CN113329446B CN 113329446 B CN113329446 B CN 113329446B CN 202110500865 A CN202110500865 A CN 202110500865A CN 113329446 B CN113329446 B CN 113329446B
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frequency domain
domain resource
bandwidth
network slice
target cell
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CN113329446A (en
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李静
曹亘
李福昌
董秋丽
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/20—Negotiating bandwidth

Abstract

The embodiment of the invention provides a resource allocation method and device of a network slice, relates to the technical field of communication, and can improve the allocation reasonability of frequency domain resources of the network slice in a cell. The method comprises the following steps: partitioning a first frequency domain resource of a target cell into NuA second frequency domain resource, calculating the bandwidth of the second frequency domain resource and comparing NuThe second frequency domain resources are numbered, NuIs a positive integer; according to the cell identification of the target cell, the bandwidth of the first frequency domain resource and the number corresponding to the current time unit, from NuDetermining a reference number in the numbers of the second frequency domain resources; and determining the number of the second frequency domain resource occupied by the network slice according to the reference number and the number of the network slice.

Description

Resource allocation method and device for network slices
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for resource allocation of a network slice.
Background
In a 5th generation (5G) mobile communication network system, a Network Slicing (NS) function is introduced, and air interface resources and scheduling policies thereof are uniformly defined in a network slicing manner, so that good isolation of different network slices on the air interface resources and data is ensured, and the multiplexing efficiency of the air interface resources is improved.
At present, the resource allocation method of the network slice mostly allocates resources according to the service type and the attribute information of the network slice, but the method for allocating resources only according to the service type and the attribute information of the network slice has the problem of unreasonable resource allocation.
Disclosure of Invention
The embodiment of the application provides a resource allocation method and device for a network slice, which can improve the allocation rationality of frequency domain resources of the network slice in a cell.
In a first aspect, the present application provides a resource allocation method for a network slice, where the method includes: partitioning a first frequency domain resource of a target cell into NuA second frequency domain resource and for NuThe second frequency domain resources are numbered, NuIs a positive integer; according to the cell identification of the target cell, the bandwidth of the first frequency domain resource and the number corresponding to the current time unit, from NuDetermining a reference number in the numbers of the second frequency domain resources; and determining the number of the second frequency domain resource occupied by the network slice according to the reference number and the number of the network slice.
In the technical solution provided in the embodiment of the present application, the number of the second frequency domain resource occupied by the network slice is randomly determined according to the reference number and the number of the network slice. The reference number is also randomly changed according to the cell identifier of the target cell and the number corresponding to the current time, so that the randomness of the number of the second frequency domain resource occupied by the network slice is further improved, and the possibility that the number of the second frequency domain resource occupied by the network slice in two adjacent cells is different is improved. The numbers of the second frequency domain resources occupied by the network slice in the two adjacent cells are very different, so that the frequency domain resources of the network slice in the two adjacent cells are different, and the signal interference between the two adjacent cells is reduced. Therefore, the technical scheme provided by the embodiment of the application can improve the distribution rationality of the frequency domain resources of the network slice in the cell.
In one possible design, the number from N is determined based on the cell id of the target cell and the number corresponding to the current time unituDetermining a reference number from the numbers of the second frequency domain resources, including: from N according to a first formulauDetermining a reference number in the numbers of the second frequency domain resources; the first formula is:
Figure BDA0003056183690000011
wherein i ═ susfn modj, NuIs the amount of the second frequency domain resource, NcMod represents the remainder operation, referenced to the reference number,
Figure BDA0003056183690000012
and the cell identifier is the cell identifier of the target cell, i is a random adjustment coefficient, j is a coefficient determined according to the bandwidth of the first frequency domain resource, and subsfn is a number corresponding to the current time unit.
In one possible design, determining, according to the reference number and the number of the network slice, the number of the second frequency domain resource occupied by the network slice includes: determining the number of a second frequency domain resource occupied by the network slice according to a second formula; the second formula is: n is a radical ofs＝(Nc+(Si+Noffset)×fHop)modNuWherein N issNumbering of the second frequency domain resources occupied for network slicing, NuIs the number of second frequency domain resources, NcFor reference number, mod denotes the remainder operation, NoffsetAs a coefficient of offset, fHopIs the coefficient of jump, SiNumbering of network slices, SiThe value range of (2) is (0, N-1), and N is the number of the network slices in the current period.
In one possible design, a first frequency domain resource of a target cell is divided into NuSecond frequency domain resources comprising: determining the expected bandwidth of the second frequency domain resource in the current period according to the expected bandwidth of the second frequency domain resource in the previous period and the bandwidth of the third frequency domain resource; the third frequency domain resource comprises NoFrequency domain resource actually used by each network slice in the last period, NoThe number of network slices of the last period; dividing the first frequency domain resource of the target cell into N according to the bandwidth of the first frequency domain resource of the target cell and the expected bandwidth of the second frequency domain resource in the current perioduA second frequency domain resource.
In one possible design, determining an expected bandwidth of the second frequency-domain resource in the current period according to the expected bandwidth of the second frequency-domain resource in the previous period and a bandwidth of the third frequency-domain resource includes: according to a third formula
Figure BDA0003056183690000021
Figure BDA0003056183690000022
Determining an expected bandwidth of the second frequency domain resource in a current period; wherein, BSFor the expected bandwidth of the second frequency domain resource in the current period, BSoFor the expected bandwidth of the second frequency domain resource in the last period, BOIs the bandwidth of the third frequency domain resource, and Ts is the weighting coefficient.
Therefore, in the embodiment of the present application, the expected bandwidth of the second frequency domain resource in the current period may be dynamically adjusted according to the expected bandwidth of the second frequency domain resource in the previous period and the actually used bandwidth of the network slice in the previous period, so that the expected bandwidth of the second frequency domain resource in the current period may be dynamically adjusted in consideration of actual requirements or expectations, and thus the expected bandwidth of the second frequency domain resource in the current period is more reasonable, and the allocation reasonability of the frequency domain resource in the cell of the network slice is further improved.
In one possible design, the first frequency domain resource of the target cell is divided into N according to the bandwidth of the first frequency domain resource of the target cell and the expected bandwidth of the second frequency domain resource in the current perioduSecond frequency domain resources comprising: according to the formula
Figure BDA0003056183690000023
Determining a number of second frequency domain resources; dividing the first frequency domain resource of the target cell into N according to the quantity of the second frequency domain resource and the bandwidth of the first frequency domain resourceuA second frequency domain resource; wherein N isuIs the amount of the second frequency domain resource, BcBandwidth of a first frequency domain resource of a target cell, BSThe expected bandwidth for the second frequency domain resource in the current period.
In one possible design, the 1 st to the Nthu-1The bandwidth of the second frequency domain resource is BSN thuThe bandwidth of the second frequency domain resource is Bc-Nu-1×BS。
In a second aspect, the present application provides a communication device comprising a processing module. A processing module for dividing a first frequency domain resource of a target cell into NuA second frequency domain resource and for NuThe second frequency domain resources are numbered, NuIs a positive integer; according to the cell identification of the target cell, the bandwidth of the first frequency domain resource and the number corresponding to the current time unit, starting from NuDetermining a reference number in the numbers of the second frequency domain resources; and determining the number of the second frequency domain resource occupied by the network slice according to the reference number and the number of the network slice.
In one possible design, the processing module is specifically configured to: according to a first formula, from NuDetermining a reference number in the numbers of the second frequency domain resources; the first formula is:
Figure BDA0003056183690000024
wherein i ═ subsfn mod j, NuIs the amount of the second frequency domain resource, NcMod represents the remainder operation,
Figure BDA0003056183690000025
and the cell identifier of the target cell is represented by i, the random adjustment coefficient is represented by j, the coefficient is determined according to the bandwidth of the first frequency domain resource, and subsfn is a number corresponding to the current time unit.
In one possible design, the processing module is specifically configured to: determining the number of a second frequency domain resource occupied by the network slice according to a second formula; the second formula is: n is a radical ofs＝(Nc+(Si+Noffset)×fHop)modNuWherein N issNumber of second frequency domain resources occupied for network slicing, NuIs the amount of the second frequency domain resource, NcFor reference number, mod denotes the remainder operation, NoffsetAs a coefficient of offset, fHopIs the coefficient of jump, SiNumbering of network slices, SiThe value range of (1) is (0, N-1), and N is the number of the network slices in the current period.
In one possible design, the processing module is specifically configured to: determining the expected bandwidth of the second frequency domain resource in the current period according to the expected bandwidth of the second frequency domain resource in the previous period and the bandwidth of the third frequency domain resource; the third frequency domain resource comprises NoFrequency domain resource actually used by each network slice in the last period, NoThe number of network slices of the last period; dividing the first frequency domain resource of the target cell into N according to the bandwidth of the first frequency domain resource of the target cell and the expected bandwidth of the second frequency domain resource in the current perioduA second frequency domain resource.
In one possible design, the processing module is specifically configured to: according to a third formula
Figure BDA0003056183690000026
Determining an expected bandwidth of the second frequency domain resource in a current period; wherein, BSFor the expected bandwidth of the second frequency domain resource in the current period, BSoFor the expected bandwidth of the second frequency domain resource in the last period, BOIs the bandwidth of the third frequency domain resource, and Ts is the weighting coefficient.
In one possible design, the processing module is specifically configured to: according to the formula
Figure BDA0003056183690000027
Determining a number of second frequency domain resources; dividing the first frequency domain resource of the target cell into N according to the quantity of the second frequency domain resource and the bandwidth of the first frequency domain resourceuA second frequency domain resource; wherein N isuIs the amount of the second frequency domain resource, BcBandwidth of a first frequency domain resource of a target cell, BSThe expected bandwidth for the second frequency domain resource in the current period.
In one possible design, the 1 st to the Nthu-1The bandwidth of the second frequency domain resource is BSN thuThe bandwidth of the second frequency domain resource is Bc-Nu-1×BS。
In a third aspect, an embodiment of the present application further provides a communication apparatus, including: a processor. The processor is configured to implement the resource allocation method for network slices as described in the first aspect or any one of the possible designs.
In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, where computer instructions are stored, and when the computer instructions are executed, the method for allocating resources for a network slice in the first aspect or any one of the possible designs is implemented.
In a fifth aspect, an embodiment of the present application further provides a computer program product, which when run on a computer, causes the computer to execute the resource allocation method for network slices described in the first aspect or any one of the possible designs.
The technical effects brought by any one of the designs of the second aspect to the fifth aspect may be referred to the technical effects brought by the corresponding design of the first aspect, and are not described herein again.
Drawings
Fig. 1 is a schematic structural diagram of a communication device provided in the present application;
fig. 2 is a flowchart of a resource allocation method for a network slice provided in the present application;
fig. 3 is a flowchart of another resource allocation method for a network slice provided in the present application;
fig. 4 is a flowchart of another resource allocation method for a network slice provided in the present application;
fig. 5 is a schematic diagram illustrating a resource allocation result of a network slice according to the present application;
fig. 6 is a schematic structural diagram of a communication device provided in the present application;
fig. 7 is a schematic structural diagram of another communication device provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. 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 application.
In the description of the present invention, "/" means "or" unless otherwise specified, for example, A/B may mean A or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" and "a plurality" mean two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.
In the embodiments of the present application, the words "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion for ease of understanding.
Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to the listed steps or modules, but may alternatively include other steps or modules not listed or inherent to such process, method, article, or apparatus.
Technical terms related to the embodiments of the present invention are briefly described below.
1. Network slicing
5G mobile communication technology, and a network slicing function is introduced. The network slice NS is a logically isolated network for supporting specific network capabilities and network characteristics, and may be end-to-end (E2E) including the entire network, or part of the network functions may be shared among multiple network slices, which is a key technology for meeting the requirements of 5G mobile communication technology regarding network differentiation. Generally, the network characteristics of different network slices are different, and the network slices are required to be isolated from each other and not influenced by each other. For example, network slices in enhanced mobile broadband (eMBB) scenarios require large bandwidth and low delay; a network slice of an internet of things (mIOT) scene requires to support mass terminal access, but has small bandwidth and no requirement on time delay; in addition, there are ultra-reliable and ultra-low latency communication (urlllc) scenarios.
2. Interference coordination
In order to coordinate interference between cells, an Inter Cell Interference Coordination (ICIC) technique is used in the interference coordination technique of 4G LTE, which controls interference as much as possible before overload occurs, and reduces the probability of overload occurrence. ICIC is the advance planning of the available time-frequency resources for each cell edge user and the definition of time-frequency resources for high power transmission. The service cell informs the adjacent cell which may generate interference in advance of the resource allocation condition of the edge user, so that the adjacent cell prepares in advance. The ICIC technique mainly includes a Soft Frequency Reuse (SFR) technique and a Fractional Frequency Reuse (FFR) technique, and aims to improve frequency reuse factors at cell edges, improve performance at cell edges, and reduce inter-cell interference. FFR and SFR differ in the frequency range and number of participating multiplexes. FFR is only a fraction of the frequencies multiplexed at the cell edge, whereas SFR allows all frequencies to be multiplexed at the cell edge. The two are otherwise identical.
The above is an introduction of technical terms related to the embodiments of the present invention, and details are not described below.
At present, the resource allocation method of the network slice mostly allocates resources based on the service type and attribute information of the network slice, so that the frequency domain resources of the network slice in the adjacent cells are fixed. However, when neighboring cells serve the same network slice with fixed same frequency domain resources, network slices employing the same frequency domain resources may generate persistent interference. Therefore, the current resource allocation method of the network slice has the problem of unreasonable resource allocation.
In order to solve the foregoing technical problem, an embodiment of the present application provides a method and an apparatus for allocating resources of a network slice. The technical solution provided in the embodiments of the present application may be applied to various communication systems, for example, a New Radio (NR) communication system adopting a 5G communication technology, a future evolution system or a multiple communication convergence system, and the like. The technical scheme provided by the application can be applied to various application scenarios, for example, scenarios such as machine-to-machine (M2M), macro-micro communication, eMBB, uRLLC, and mMTC. As can be known to those skilled in the art, with the evolution of network architecture and the emergence of new service scenarios, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.
In a possible design, as shown in fig. 1, the technical solution provided in the embodiment of the present application may be applied to a communication device 01, where the communication device 01 is independent of an access network device 02. The communication device 01 and the access network device 02 constitute a communication system. The communication device 01 may be a slice management device or another device. The access network device 02 may be a base station or other access network devices.
In another possible design, the communication device in the embodiment of the present application may be a device inside a radio access network, such as a base station. When the communication device in the embodiment of the present application is a base station, the technical solutions provided in the embodiments of the present application are also applicable.
The technical solution in the embodiments of the present application is described below with reference to other drawings in the embodiments of the present application.
As shown in fig. 2, an embodiment of the present application provides a resource allocation method for a network slice, where the method may include steps S201 to S203:
s201, the communication device divides the first frequency domain resource of the target cell into NuA second frequency domain resource and for NuThe second frequency domain resource is numbered, NuIs a positive integer.
Optionally, the first frequency domain resource may be all frequency domain resources in the target cell, or may be a part of frequency domain resources in the target cell. And under the condition that the first frequency domain resources are all frequency domain resources in the target cell, the bandwidth of the first frequency domain resources is the system bandwidth of the target cell. In practical applications, a person skilled in the art may determine the first frequency domain resource according to actual needs, which is not limited in this application.
Alternatively, the communication device may couple N_uThe second frequency domain resources are numbered in order from low frequency to high frequency, or the communication device may further number N_uThe second frequency domain resources are numbered in order from high frequency to low frequency.
For example, the number of the second frequency domain resource may be (0, 1, 2, 3, 4, ·u-1) May also be (1, 2, 3, 4.. times.n._u)。
S202, the communication equipment selects N from N according to the cell identification of the target cell, the bandwidth of the first frequency domain resource and the number corresponding to the current time unituThe reference number is determined among the numbers of the second frequency domain resources.
The time unit may be a subframe, a slot, a symbol, or a mini-slot, which is not limited herein.
Illustratively, the reference number may be any one of the numbers of the second frequency domain resources, which is used as a calculation reference for the number of the second frequency domain resources occupied by the network slice.
In one possible design, the reference number may be according to a first formula
Figure BDA0003056183690000051
And (4) determining. Wherein i ═ subsfn mod j, NuIs the amount of the second frequency domain resource, NcMod represents the remainder operation, referenced to the reference number,
Figure BDA0003056183690000052
i is a random adjustment coefficient, j is a coefficient determined according to the bandwidth of the first frequency domain resource, and subsfn is the correspondence of the current time unitThe number of (2).
Illustratively, j may be determined by the following equation.
Figure BDA0003056183690000053
Wherein N isRBIs the bandwidth of the first frequency domain resource, i.e., NRBMay be the number of PRBs included in the first frequency-domain resource. In the case that the first frequency domain resource is all frequency domain resources of the target cell, the bandwidth of the first frequency domain resource is the system bandwidth of the target cell, i.e. NRBIs the system bandwidth of the target cell.
For example, if the cell identifier of the target cell is 002, the number corresponding to the current time unit is 11, the number of the second frequency domain resources is 13, and the value of j is 2, the value of i is 1, which can be calculated according to the first formula, and the reference number is 8.
For another example, if the cell identifier of the target cell is 002, the number corresponding to the current time unit is 8, the number of the second frequency domain resources is 13, and the value of i is 2, the value of i is 0, which can be calculated according to the first formula, and the reference number is 2.
For another example, if the cell identifier of the target cell is 002, the number corresponding to the current time cell is 11, the number of the second frequency domain resources is 13, and the value of i is 4, the value of i is 3, which can be calculated according to the first formula, and the reference number is 11.
It will be appreciated that the reference numbers determined will differ, such as 8, 2 or 11, due to the differences in i and/or j as described above. And i and/or i are randomly varied such that the reference number is also randomly varied.
And S203, the communication equipment determines the number of the second frequency domain resource occupied by the network slice according to the reference number and the number of the network slice.
In one possible design, the number of the second frequency domain resource occupied by the network slice may be according to a second formula Ns＝(Nc+(Si+Noffset)×fHop)modNuIs determined, wherein NsNumbering of the second frequency domain resources occupied for network slicing, NuIs the number of second frequency domain resources, NcFor reference number, mod denotes the remainder operation, NoffsetAs a coefficient of offset, fHopIs the coefficient of jump, SiNumbering the network slices, SiThe value range of (1) is (0, N-1), and N is the number of the network slices in the current period.
Illustratively, assume, for example, that the reference number is 8, the number of network slices is 2, the number of second frequency domain resources is 13, NoffsetHas a value of 5, fHopIf the value of (2) is 6, the number of the second frequency domain resource occupied by the network slice is 11 according to the second formula.
For another example, assume that the reference number is 8, the number of the network slice is 3, the number of the second frequency domain resources is 13, NoffsetHas a value of 5, fHopIf the value of (3) is 6, the number of the second frequency domain resource occupied by the network slice is 4 according to the second formula.
It is understood that, based on the embodiment shown in fig. 2, the reference number is determined according to the cell identifier of the target cell and the number of the current time unit, that is, the reference number may be changed following the change of the cell identifier and the number of the time unit. And the number of the second frequency domain resource occupied by the network slice in the target cell is determined according to the reference number and the number of the network slice. Thus, for the same network slice, there is a high probability that the reference numbers corresponding to different cells are different. In this way, the number of occupied second frequency domain resources of the network slice in two adjacent cells is different with a high probability. Since the numbers of the second frequency domain resources occupied by the network slice in the two adjacent cells are very different, the probability that the network slice occupies different frequency domain resources in the two adjacent cells is increased, so as to reduce the signal interference between the two adjacent cells. Therefore, the technical scheme provided by the embodiment of the application can improve the distribution rationality of the frequency domain resources of the network slice in the cell.
Optionally, based on the embodiment shown in fig. 2, as shown in fig. 3, step S201 may be specifically implemented as: steps S201a-S201 c.
S201a, the communication device determines an expected bandwidth of the second frequency domain resource in the current period according to the expected bandwidth of the second frequency domain resource in the previous period and the bandwidth of the third frequency domain resource.
Wherein the third frequency domain resource comprises NoThe frequency domain resource actually used by each network slice in the last period, NoThe number of network slices in the last cycle. The expected bandwidth of the second frequency domain resource in the last period represents the bandwidth expected to be evenly allocated to each second frequency domain resource in the target cell.
The unit of the bandwidth may be a Physical Resource Block (PRB), and is not limited thereto.
In one possible design, the expected bandwidth of the second frequency domain resource in the current period may be according to a third formula
Figure BDA0003056183690000061
Figure BDA0003056183690000062
Is determined in which BSFor the expected bandwidth of the second frequency domain resource in the current period, BSoFor the expected bandwidth of the second frequency domain resource in the last period, BOIs the bandwidth of the third frequency domain resource, and Ts is the weighting coefficient.
It should be noted that the weighting factor Ts is used to represent the weight of the expected bandwidth of the second frequency domain resource in the previous period and the bandwidth of the third frequency domain resource. For example, the larger the value of Ts is, the larger the weight of the expected bandwidth of the second frequency domain resource in the last period is; the smaller the value of Ts is, the larger the weight of the bandwidth of the third frequency domain resource is.
For example, assume that the number of the second frequency domain resources is 5, the expected bandwidth of the second frequency domain resources in the previous period is 20PRB, the bandwidth of the third frequency domain resources is 80PRB, and the value of Ts is 10. According to the third formula, the expected bandwidth of the second frequency-domain resource in the current period is 16.4 PRB.
For another example, assume that the number of the second frequency domain resources is 5, the expected bandwidth of the second frequency domain resources in the previous period is 16.4PRB, the bandwidth of the third frequency domain resources is 80PRB, and the value of Ts is 10. According to the third formula, the expected bandwidth of the second frequency-domain resource in the current period is 16.04 PRB.
For another example, assume that the number of the second frequency domain resources is 5, the expected bandwidth of the second frequency domain resources in the previous period is 20PRB, the bandwidth of the third frequency domain resources is 80PRB, and the value of Ts is 5. According to the third formula, the expected bandwidth of the second frequency-domain resource in the current period is 16.8 PRB.
It should be noted that the value of Ts may be fixed or determined by an operator or a user, which is not limited herein.
Therefore, in the embodiment of the present application, the expected bandwidth of the second frequency domain resource in the current period may be dynamically adjusted according to the expected bandwidth of the second frequency domain resource in the previous period and the actually used bandwidth of the network slice in the previous period, so that the expected bandwidth of the second frequency domain resource in the current period may be dynamically adjusted in consideration of the actual requirement of the previous period and the expected requirement of the previous period, and thus the expected bandwidth of the second frequency domain resource in the current period is more reasonable, and the allocation reasonability of the frequency domain resource in the cell of the network slice is further improved.
S201b, the communication device divides the first frequency domain resource of the target cell into N according to the bandwidth of the first frequency domain resource of the target cell and the expected bandwidth of the second frequency domain resource in the current perioduA second frequency domain resource.
Alternatively, step S201b may be implemented as: the communication equipment according to the formula
Figure BDA0003056183690000071
Determining the quantity of the second frequency domain resources, and dividing the first frequency domain resources of the target cell into N according to the quantity of the second frequency domain resources and the bandwidth of the first frequency domain resourcesuA second frequency domain resource, wherein NuIs the amount of the second frequency domain resource, BcBandwidth of a first frequency domain resource of a target cell, BSThe expected bandwidth for the second frequency domain resource in the current period.
Illustratively, the communication device may be 1 st to N thu-1The bandwidth of the second frequency domain is determined as BSN is to beuThe bandwidth of the second frequency domain resource is determined as Bc-Nu-1×BSWherein B iscBandwidth of a first frequency domain resource of a target cell, BSFor the expected bandwidth of the second frequency domain resource in the current period, NuIs the amount of the second frequency domain resource.
For example, assuming that the bandwidth of the first frequency-domain resource of the target cell is 273PRB and the expected bandwidth of the second frequency-domain resource in the current period is 20PRB, according to the formula
Figure BDA0003056183690000072
It can be obtained that the number of the second frequency domain resources is 13, the bandwidth of the 1 st to 12 th second frequency domains is 20PRB, and the bandwidth of the 13 th second frequency domain resource is determined to be 33 PRB.
Optionally, the formula in the embodiment of the present application
Figure BDA0003056183690000073
Can also be replaced by formulas
Figure BDA0003056183690000074
To determine the amount of the second frequency domain resource.
For example, assuming that the bandwidth of the first frequency-domain resource of the target cell is 273PRB and the expected bandwidth of the second frequency-domain resource in the current period is 20PRB, according to the formula
Figure BDA0003056183690000075
It can be obtained that the number of the second frequency domain resources is 14, the bandwidths of the 1 st to 13 th second frequency domains are 20PRB, and the bandwidth of the 14 th second frequency domain resource is determined to be 13 PRB.
Compared with the technical scheme that the expected bandwidths of all the second frequency domain resources are the same, the remaining non-divided frequency domain resources are divided into one second frequency domain resource in the embodiment of the application, so that the frequency domain resources in the cell can be fully utilized, and the utilization efficiency of the frequency domain resources in the cell is improved.
S201c communication device pair NuThe second frequency domain resource is numbered, NuIs a positive integer.
Optionally, based on the embodiment shown in fig. 2, as shown in fig. 4, after step 203, the method for allocating resources to a network slice according to the embodiment of the present invention may further include the following steps:
and S204, determining the bandwidth of the fourth frequency domain resource.
And the fourth frequency domain resource is unoccupied frequency domain resource in the target cell. The communication device may allocate the frequency domain resource to the network slice on the fourth frequency domain resource according to the actual requirement of the network slice, or the communication device may allocate the frequency domain resource to the network slice on the fourth frequency domain resource according to the service type and the attribute information of the network slice.
Therefore, the technical solution provided by the embodiment of the present application can allocate frequency domain resources with fixed bandwidth to the network slice in one period. Further, according to the requirement of the network slice, the frequency domain resource can be allocated to the network slice on the fourth frequency domain resource.
The method shown in fig. 3 is explained below with reference to specific examples.
As shown in fig. 5, for example, it is assumed that the cell identifier of the cell 1 is 001, the bandwidth of the cell 1 is 273PRB, the first frequency-domain resource is all the frequency-domain resources of the cell 1, and is divided into 9 second frequency-domain resources, where the expected bandwidth of the second frequency-domain resource in the current period is 30PRB, the bandwidths of the 1 st to 8 th second frequency-domain resources are 20PRB, and the bandwidth of the 9 th second frequency-domain resource is 33 PRB. Assuming that the random adjustment coefficient i takes a value of 3 and i takes a value of 4, the reference number is 4 according to the first formula. Assuming a shift factor NoffsetIs taken to be 5, the jump coefficient fHopThe value of (2) is 4, the number of the network slices is 5, and the numbers of the 5 network slices are 000, 001, 002, 003 and 004 respectively. Then 5 nets are calculated according to the second formulaThe numbers of the second frequency domain resources occupied by the network slice are respectively 6, 1, 5, 0 and 4.
It can be understood that, in conjunction with the above-described embodiment of the present application, the fourth frequency domain resource is an unoccupied frequency domain resource in cell 1, that is, the second frequency domain resources numbered 2, 3, 7, and 8.
As shown in fig. 5, for another example, suppose that the cell identifier of cell 2 is 002, the bandwidth of cell 1 is 273PRB, the numbers of 5 network slices are 000, 001, 002, 003, 004 respectively, the first frequency domain resource is all the frequency domain resources of cell 1 and is divided into 9 second frequency domain resources, where the expected bandwidth of the second frequency domain resource in the current period is 30 PRB. Assuming that the random adjustment coefficient i takes a value of 3 and j takes a value of 4, the reference number is 5 according to the first formula. Assuming a shift factor NoffsetIs taken to be 5, the jump coefficient fHopIf the value of (2) is 4, the number of the second frequency domain resource occupied by the 5 network slices is 7, 2, 6, 1, 5, respectively, which is calculated according to the second formula.
As shown in fig. 5, for another example, suppose that the cell identifier of cell 3 is 003, the bandwidth of cell 1 is 273PRB, the numbers of 5 network slices are 000, 001, 002, 003, 004 respectively, the first frequency domain resource is all the frequency domain resources of cell 1 and is divided into 9 second frequency domain resources, wherein the expected bandwidth of the second frequency domain resources in the current period is 30 PRB. Assuming that the random adjustment coefficient i takes a value of 3 and j takes a value of 4, the reference number is 6 according to the first formula. Assuming a shift factor NoffsetHas a value of 5 and a jump coefficient fHopIf the value of (2) is 4, the number of the second frequency domain resource occupied by the 5 network slices is 8, 3, 7, 2, and 6, respectively.
As shown in fig. 5, the reference number varies randomly according to the cell identifier of the target cell and the number corresponding to the current time, and as in cells 1, 2, and 3, the reference numbers are 4, 5, and 6, respectively. And because the number of the second frequency domain resource occupied by the network slice is randomly determined according to the reference number and the number of the network slice, the randomness of the number of the second frequency domain resource occupied by the network slice is improved, for example, in the cells 1, 2 and 3, the numbers of the second frequency domain resource occupied by the network slice 1 in each cell are respectively 6, 7 and 8. That is to say, the technical solution provided in the embodiment of the present application improves the possibility that the numbers of the second frequency domain resources occupied by the network slice in the two adjacent cells are different, thereby reducing the signal interference between the two adjacent cells. Therefore, the technical scheme provided by the embodiment of the application can improve the distribution rationality of the frequency domain resources of the network slice in the cell.
It can be understood that, since the properties of different network slices are different, network slices with different properties are less likely to generate interference when allocating the same frequency domain resource in two adjacent cells, thereby reducing signal interference between the two adjacent cells. Illustratively, network slice 4 is for voice-like traffic and network slice 2 is for download-like traffic. Compared with the network slice 2 occupying the same frequency domain resources in the cell 1 and the cell 2, as shown in fig. 5, the frequency domain resources occupied by the network slice 2 in the cell 1 are the same as the frequency domain resources occupied by the network slice 4 in the cell 2, so as to reduce the signal interference between two adjacent cells on the same frequency domain resources.
It can be seen that the foregoing describes the solution provided by the embodiments of the present application primarily from a methodological perspective. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiment of the present application, the resource allocation apparatus of the network slice may perform the division of the function modules according to the method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device is used for improving the reasonableness of allocation of frequency domain resources in a cell of a network slice, for example, used for executing a resource allocation method of the network slice shown in fig. 2, fig. 3 or fig. 4, and comprises the following steps: a processing module 402.
A processing module 402 for dividing a first frequency domain resource of a target cell into NuA second frequency domain resource, and for NuThe second frequency domain resources are numbered, NuIs a positive integer; according to the cell identification of the target cell, the bandwidth of the first frequency domain resource and the number corresponding to the current time unit, starting from NuDetermining a reference number in the numbers of the second frequency domain resources; and determining the number of the second frequency domain resource occupied by the network slice according to the reference number and the number of the network slice.
In one possible design, the processing module 402 is specifically configured to: from N according to a first formulauDetermining a reference number in the numbers of the second frequency domain resources; the first formula is:
Figure BDA0003056183690000081
wherein i ═ subsfn mod j, NuIs the amount of the second frequency domain resource, NcMod represents the remainder operation, referenced to the reference number,
Figure BDA0003056183690000082
and the cell identifier is the cell identifier of the target cell, i is a random adjustment coefficient, j is a coefficient determined according to the bandwidth of the first frequency domain resource, and subsfn is a number corresponding to the current time unit.
In one possible design, the processing module 402 is specifically configured to: determining the net according to the second formulaThe number of the second frequency domain resource occupied by the network slice; the second formula is: n is a radical of hydrogens＝(Nc+(Si+Noffset)×fHop)modNuWherein N issNumbering of the second frequency domain resources occupied for network slicing, NuIs the amount of the second frequency domain resource, NcFor reference number, mod denotes the remainder operation, NoffsetAs a coefficient of offset, fHopIs the coefficient of jump, SiNumbering of network slices, SiThe value range of (2) is (0, N-1), and N is the number of the network slices in the current period.
In one possible design, the processing module 402 is specifically configured to: determining the expected bandwidth of the second frequency domain resource in the current period according to the expected bandwidth of the second frequency domain resource in the previous period and the bandwidth of the third frequency domain resource; the third frequency domain resource comprises NoFrequency domain resource actually used by each network slice in the last period, NoThe number of network slices of the last period; dividing the first frequency domain resource of the target cell into N according to the bandwidth of the first frequency domain resource of the target cell and the expected bandwidth of the second frequency domain resource in the current perioduA second frequency domain resource.
In one possible design, the processing module 402 is specifically configured to: according to a third formula
Figure BDA0003056183690000091
Figure BDA0003056183690000092
Determining an expected bandwidth of the second frequency domain resource in a current period; wherein, BSExpected bandwidth of the second frequency domain resource in the current period, BSoFor the expected bandwidth of the second frequency domain resource in the last period, BOIs the bandwidth of the third frequency domain resource, and Ts is the weighting coefficient.
In one possible design, the processing module 402 is specifically configured to: according to the formula
Figure BDA0003056183690000093
Determining second frequency domain resourcesThe number of the components; according to the number of the second frequency domain resources and the bandwidth of the first frequency domain resource, dividing the first frequency domain resource of the target cell into NuA second frequency domain resource; wherein, NuIs the amount of the second frequency domain resource, BcBandwidth of a first frequency domain resource of a target cell, BSThe expected bandwidth for the second frequency domain resource in the current period.
In one possible design, the 1 st to the Nthu-1The bandwidth of the second frequency domain resource is BSN thuThe bandwidth of the second frequency domain resource is Bc-Nu-1×BS。
Optionally, the communication apparatus may further include a communication module 401, and the communication module 401 is used for the communication apparatus to communicate with other devices or networks. For example, the communication device may send, through the communication module, the number of the second frequency domain resource occupied by the network slice to the base station.
As shown in fig. 7, another possible structural diagram of a communication device provided in an embodiment of the present application includes: a processor 502 and a bus 504. Optionally, the communication device may further include a memory 501 and a communication interface 503.
A processor 502 for controlling and managing the actions of the communication device, e.g., performing the steps performed by the processing module 402 described above, and/or other processes for performing the techniques described herein.
A communication interface 503 for enabling the communication apparatus to communicate with other network devices, for example, in conjunction with the processor 502 to perform the steps performed by the processing module 402 described above, and/or to perform other processes for the techniques described herein.
The processor 502 described above may be implemented or performed with the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.
The memory 501 is used to store program codes and data of the communication apparatus. The memory 501 may be a memory in a communication device, and the memory may include a volatile memory, such as a random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.
The bus 504 may be an Extended Industry Standard Architecture (EISA) bus or the like. The bus 504 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
Through the description of the foregoing embodiments, it will be clear to those skilled in the art that, for convenience and simplicity of description, only the division of the functional modules is illustrated, and in practical applications, the above function distribution may be completed by different functional modules as needed, that is, the internal structure of the apparatus may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus, and the module described above, reference may be made to the corresponding processes in the foregoing method embodiments, which are not described herein again.
The embodiment of the application also provides a computer readable storage medium. All or part of the processes in the above method embodiments may be performed by computer instructions to instruct related hardware, and the program may be stored in the above computer-readable storage medium, and when executed, may include the processes in the above method embodiments. The computer readable storage medium may be an internal storage unit of the communication device of any of the foregoing embodiments, such as a hard disk or a memory of the communication device. The computer readable storage medium may also be an external storage device of the communication apparatus, such as a plug-in hard disk, a Smart Memory Card (SMC), a Secure Digital (SD) card, a flash memory card (flash card), or the like, provided on the communication apparatus. Further, the computer-readable storage medium may include both an internal storage unit and an external storage device of the communication apparatus. The computer-readable storage medium stores the computer program and other programs and data required by the communication apparatus. The above-described computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.
Embodiments of the present application further provide a computer program product, where the computer program product includes a computer program, and when the computer program product runs on a computer, the computer is caused to execute the steps of the resource allocation method for a network slice in the embodiments shown in fig. 2, fig. 3, and fig. 4.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A method for resource allocation of a network slice, the method comprising:
partitioning a first frequency domain resource of a target cell into NuA second frequency domain resource, and for said NuThe second frequency domain resource is numbered, NuIs a positive integer;
according to the cell identification of the target cell, the bandwidth of the first frequency domain resource and the number corresponding to the current time unit, selecting N from NuDetermining a reference number in the numbers of the second frequency domain resources;
and determining the number of the second frequency domain resource occupied by the network slice according to the reference number and the number of the network slice.
2. The method of claim 1, wherein the method is performed in a batch processAccording to the cell identification of the target cell, the bandwidth of the first frequency domain resource and the number corresponding to the current time unit, the number from N is determineduDetermining a reference number from the numbers of the second frequency domain resources, including:
according to a first formula, from said NuDetermining a reference number in the numbers of the second frequency domain resources;
the first formula is:
Figure FDA0003056183680000011
wherein i ═ susfn modj, NuIs the number of the second frequency domain resources, NcMod represents the remainder operation for the reference number,
Figure FDA0003056183680000012
and for the cell identifier of the target cell, i is a random adjustment coefficient, j is a coefficient determined according to the bandwidth of the first frequency domain resource, and subsfn is a number corresponding to the current time unit.
3. The method according to claim 1, wherein the determining, according to the reference number and the number of the network slice, the number of the second frequency domain resource occupied by the network slice includes:
determining the number of a second frequency domain resource occupied by the network slice according to a second formula;
the second formula is: n is a radical ofs＝(Nc+(Si+Noffset)×fHop)modNuWherein N issNumber of second frequency domain resource occupied by said network slice, NuIs the number of the second frequency domain resources, NcFor the reference number, mod represents the remainder operation, NoffsetAs a coefficient of offset, fHopIs the coefficient of jump, SiNumbering said network slices, SiThe value range of (2) is (0, N-1), and N is the number of the network slices in the current period.
4. According toThe method of any of claims 1 to 3, wherein the partitioning of the first frequency domain resources of the target cell into NuSecond frequency domain resources comprising:
determining the expected bandwidth of the second frequency domain resource in the current period according to the expected bandwidth of the second frequency domain resource in the previous period and the bandwidth of the third frequency domain resource; the third frequency domain resource comprises NoThe frequency domain resource actually used by each network slice in the last period, NoThe number of the network slices for the previous period;
dividing the first frequency domain resource of the target cell into N according to the bandwidth of the first frequency domain resource of the target cell and the expected bandwidth of the second frequency domain resource in the current perioduA second frequency domain resource.
5. The method of claim 4, wherein determining the expected bandwidth of the second frequency domain resource in the current period according to the expected bandwidth of the second frequency domain resource in the previous period and the bandwidth of the third frequency domain resource comprises:
according to a third formula
Figure FDA0003056183680000013
Determining an expected bandwidth of the second frequency domain resource within a current period;
wherein, BSFor the expected bandwidth of the second frequency domain resource in the current period, BSoFor the expected bandwidth of the second frequency domain resource in the last period, BoAnd Ts is a weighting coefficient for the bandwidth of the third frequency domain resource.
6. The method of claim 4, wherein the dividing the first frequency domain resource of the target cell into N according to the bandwidth of the first frequency domain resource of the target cell and the expected bandwidth of the second frequency domain resource in the current perioduSecond frequency domain resources comprising:
according to the formula
Figure FDA0003056183680000014
Determining a number of second frequency domain resources;
dividing the first frequency domain resource of the target cell into N according to the number of the second frequency domain resources and the bandwidth of the first frequency domain resourceuA second frequency domain resource;
wherein N isuIs the number of the second frequency domain resources, BcBandwidth of a first frequency domain resource of the target cell, BSAn expected bandwidth of the second frequency domain resource in a current period.
7. The method of claim 6, wherein the 1 st to Nthu-1The bandwidth of the second frequency domain resource is BSN thuThe bandwidth of the second frequency domain resource is Bc-Nu-1×BS。
8. A communications apparatus, the apparatus comprising: a processing module;
the processing module is configured to divide the first frequency domain resource of the target cell into NuA second frequency domain resource, and for said NuThe second frequency domain resources are numbered, NuIs a positive integer; according to the cell identification of the target cell, the bandwidth of the first frequency domain resource and the number corresponding to the current time unit, selecting N from NuDetermining a reference number in the numbers of the second frequency domain resources; and determining the number of the second frequency domain resource occupied by the network slice according to the reference number and the number of the network slice.
9. A communications apparatus comprising a processor configured to perform the processing operations of the method of any of claims 1 to 7.
10. A computer-readable storage medium having stored thereon computer instructions which, when executed, implement the method of any one of claims 1-7.
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