EP3011448A1 - Sélection de machines virtuelles ou d'entités de réseau virtualisé - Google Patents

Sélection de machines virtuelles ou d'entités de réseau virtualisé

Info

Publication number
EP3011448A1
EP3011448A1 EP13731123.9A EP13731123A EP3011448A1 EP 3011448 A1 EP3011448 A1 EP 3011448A1 EP 13731123 A EP13731123 A EP 13731123A EP 3011448 A1 EP3011448 A1 EP 3011448A1
Authority
EP
European Patent Office
Prior art keywords
entity
virtualized network
identity
physical
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP13731123.9A
Other languages
German (de)
English (en)
Inventor
Juha Antero Rasanen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Solutions and Networks Oy
Original Assignee
Nokia Solutions and Networks Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Solutions and Networks Oy filed Critical Nokia Solutions and Networks Oy
Publication of EP3011448A1 publication Critical patent/EP3011448A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5061—Partitioning or combining of resources
    • G06F9/5077—Logical partitioning of resources; Management or configuration of virtualized resources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
    • G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
    • G06F9/5033—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals considering data affinity
    • 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
    • H04L41/0894—Policy-based network configuration management
    • 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
    • H04L41/0895—Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533—Hypervisors; Virtual machine monitors
    • G06F9/45558—Hypervisor-specific management and integration aspects
    • G06F2009/45595—Network integration; Enabling network access in virtual machine instances
    • 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
    • H04L41/40—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities
    • 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
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/508—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement
    • H04L41/5096—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement wherein the managed service relates to distributed or central networked applications

Definitions

  • the present invention relates to network virtualization, in particular to selection of virtual machines or virtualized network entities in a virtualized network.
  • Embodiments of the present invention relate to virtualized networks in connection with mobile networks.
  • ETSI ISG NFV is studying network function virtualization concerning mobile network environment, refer e.g. to "Terms of Reference of the Industry Specification Group on Network Functions Virtualisation (ISG NFV)" (ETSI ISG NFV ToR_v5_4_October_2012 ) and/or to "Network Functions Virtualization - Introductory White Paper", October 22-24, 2012 at the "SDN and OpenFlow World Congress", Darmstadt- Germany”.
  • Embodiments also relate to performing an attach procedure of a UE, in particular to selecting a P-GW by an HSS, for example.
  • a P-GW by an HSS for example.
  • Detailed information can be found in 3GPP TS 23.401, in particular in subclauses 4.3.8 and 5.3.2.1, for example. That is, concerning some network entities in 3GPP environment, a given/certain entity amongst a number of similar entities is selected for a user/UE, when the UE attaches the network or sets up a session (like e.g. an IMS session) . Examples of such entities are P-GW/GGSN, PCRF, P- CSCF. Details in case of IMS are also described in 3GPP TS 29.061, especially clause 13a.
  • Several vendors offer hardware platforms / physical machines (PM) and software environments with virtual machines (VM) to be used for network functions virtualization .
  • PM physical machines
  • VM virtual machines
  • PMs physical machines
  • servers or server farms at least in big networks.
  • Each PM may support different kinds of VMs, i.e. the same kind of VMs reside in more than one PM (for security, redundancy etc. reasons).
  • Inter VM communication on the hypervisor/OS level can take place within a PM, or (perhaps even) within a server farm, but not between such physical environments (PE) .
  • PE physical environments
  • Embodiments of the present invention address this situation and aim to provide a method, apparatus, and computer program product by means of which selection of network entities for the case of a virtualized network having a large structure and running on distributed physical entities is improved.
  • an apparatus which comprises a processor and at least one memory for storing instructions to be executed by the processor, wherein the at least one memory is configured to store identities of virtualized network entities which are realized as virtual machines or as entities running on virtual machines in a virtualized network, and identities of physical entities on which the virtualized network entities are carried out, and wherein the processor is configured to select an identity of at least one virtualized network entity based on an identity of the physical entity on which the at least one virtualized network entity is carried out.
  • an apparatus which comprises a processor and at least one memory for storing instructions to be executed by the processor, wherein the processor is configured to perform a network control function as a virtual machine or as an entity running on a virtual machine on a physical entity, to send a request for selecting a virtualized network entity to a network database entity, to include information regarding the physical entity into the request, and to receive a response from the network database entity including an identity of at least one virtualized network entity selected based on the physical entity.
  • an apparatus which comprises a processor and at least one memory for storing instructions to be executed by the processor, wherein the processor is configured to perform a network control function as a virtual machine or as an entity running on a virtual machine on a physical entity, to receive a control message including an identity of at least one virtualized network entity selected based on the physical entity, and to request or allocate the at least one virtualized network entity to a user equipment.
  • a method which comprises storing identities of virtualized network entities which are realized as virtual machines or as entities running on virtual machines in a virtualized network, and identities of physical entities on which the virtualized network entities are carried out, and selecting an identity of at least one virtualized network entity based on an identity of the physical entity on which the at least one virtualized network entity is carried out .
  • a method comprises performing a network control function as a virtual machine or as an entity running on a virtual machine on a physical entity, sending a reguest for selecting a virtualized network entity to a network database entity, including information regarding the physical entity into the reguest, and receiving a response from the network database entity including an identity of at least one virtualized network entity selected based on the physical entity.
  • a method which comprises performing a network control function as a virtual machine or as an entity running on a virtual machine on a physical entity, receiving a control message including an identity of at least one virtualized network entity selected based on the physical entity, and reguesting or allocating the at least one virtualized network entity to a user eguipment .
  • a computer program product for a computer comprising software code portions for performing the above defined methods, when said product is run on the computer.
  • the computer program product may comprise a computer-readable medium on which said software code portions are stored.
  • the computer program product may be directly loadable into the internal memory of the computer and/or transmittable via a network by means of at least one of upload, download and push procedures .
  • Fig. 1 shows a simplified block diagram of network entities according to embodiments of the present invention
  • Fig. 2 shows a signaling flow according to an embodiment of the present invention
  • Fig. 3 shows a signaling flow according to a modified embodiment of the present invention.
  • Fig. 1 shows several elements involved in the procedure according to embodiments of the present invention.
  • Fig. 1 shows an HSS 1, a MME 2 and a P-GW 3.
  • the HSS 1 is an example for an apparatus or a network element in which identities of network entities such as MME, P-GW, PCRF and the like are stored, and which are to be selected, e.g., when a UE requests to be attached to a network.
  • Another example of such an apparatus is a UDR.
  • the apparatus may also be only a part of the corresponding network element.
  • the HSS 1 comprises a processor 11 and at least one memory 12 for storing instructions to be executed by the processor. Moreover, the memory stores identities of virtualized network entities which are realized as virtual machines or as entities running on virtual machines in a virtualized network, and identities of physical entities on which the virtualized network entities are carried out.
  • the processor 11 is configured to select an identity of a virtualized network entity based on an identity of the physical entity on which the virtualized network entity is carried out.
  • the HSS 1 stores identities of the network entities (such as P-GW, PCRF etc.), and identities of the physical entities on which the virtualized network entities are actually carried out or are located.
  • a network entity e.g., a P-GW
  • the HSS 1 may select based on the identity of the physical entity. For example, when a request to select a network entity comes from another virtualized network entity (e.g., a MME), the HSS 1 may select a network entity such that both entities are located at the same physical entity.
  • the memory 12 can be a single memory or a combination of different kinds of memory.
  • the instructions for carrying out processes on the processor may be stored in a separate dedicated memory, and the network element identities, physical entity identities etc. may be stored in a separate database.
  • the MME 2 is an example for an apparatus which requests selection of a virtualized network entity from the HSS 1. Similar as the HSS 1, the MME 2 comprises a processor 21 and at least one memory 22 for storing instructions to be executed by the processor.
  • the processor 21 is configured to perform a network control function as a virtual machine or as an entity running on a virtual machine on a physical entity, to send a request for selecting a virtualized network entity to a network database entity (e.g., the HSS 1), to include information regarding the physical entity into the request, and to receive a response from the network database entity including an identity of the virtualized network entity (e.g., the P-GW 3) selected based on the physical entity on which the requesting entity (MME2 ) resides.
  • the information regarding the physical entity may be e.g. an identity of the virtualized network control element sending the request, and/or a dedicated parameter indicating the physical entity.
  • the P-GW 3 is an example for a network element which is selected by the HSS 1.
  • the P-GW 3 comprises a processor 31 and at least one memory 32 for storing instructions to be executed by the processor.
  • the processor 31 is configured to perform a network control function as a virtual machine or as an entity running on a virtual machine on a physical entity, to receive a control message including an identity of at least one virtualized network entity (e.g., P-CSCF or PCRF) selected based on the physical entity, and to reguest or allocate the at least one virtualized network entity to a user eguipment .
  • P-CSCF virtualized network entity
  • a further virtualized network entity which is needed for the user eguipment is selected such that it is on the same physical entity as the P-GW 3, and also as the MME 2.
  • the HSS 1, the MME 2 and the P-GW 3 may comprise a connection unit (interface unit or interface resources) 13, 23, 33, respectively, by which a connection to the network and/or to other elements may be established.
  • a connection unit interface unit or interface resources
  • network entities which have to operate together e.g., MME, P-GW and PCRF for a connection of a user eguipment
  • MME, P-GW and PCRF for a connection of a user eguipment are selected such that they all are located on the same physical entity, i.e., that they are run on the same PM/PE.
  • the function of the HSS/UDR is extended. Namely, in present 3GPP specification, the HSS/UDR stores addresses/IDs of P-GWs available for a user/UE.
  • the HSS(/UDR) e.g., HSS 1 shown in Fig. 1
  • the HSS classifies the P-GWs as per physical machines (PMs) or physical environments (PEs) of a virtual environment.
  • the HSS is made / configured / orchestrated to know which network entities / VMs reside in a given physical environment (PE) or physical machine (PM) that is preferably capable to support inter VM communication bypassing the I/O system PM/PE internally.
  • the HSS deduces from the MME address / ID, or from a new / dedicated parameter, that the MME resides, as a VM or as an entity in a VM, in a certain PM/PE .
  • the HSS can now select and/or prioritize (i.e. give higher priority to) such P-GW(s), that reside in the same PM/PE, for the user/UE session.
  • the HSS sends the P-GW addresses / IDs to MME (as per current specifications, but with a list selected by new criteria) and the MME uses the addresses / IDs to select a P-GW (which is now optimally in the same PM/VM with the MME) .
  • Fig. 2 illustrates the operation according to the embodiment including the further developments described above with a simplified signaling scenario.
  • the UE sends an attach request to the MME, which includes user-ID and further parameters.
  • the MME forwards a corresponding request to the HSS/UDR, wherein this request includes user-ID, MME-ID, APN and further parameters.
  • the HSS/UDR detects from MME-ID or a dedicated parameter that the MME resides on a certain PM.
  • the HSS selects and/or prioritizes P-GW addresses/Ids.
  • the HSS/UDR forwards a response to the MME, the response including address (es) or identity/identities of the selected P-GW(s) .
  • the MME uses the received P-GW address (es) or identity/identities to select a P-GW for the user/UE.
  • the MME sends a corresponding reguest to the selected P-GW.
  • the reguest includes the user-ID and further parameters .
  • the P-GW selects a PCRF for the UE .
  • the P-GW forwards a corresponding reguest to the PCRF, which includes the user-ID and further parameters.
  • the PCRF establishes the connection by setting PCC rules and/or QoS or the like for the connection, and sends a corresponding response in S9 to the P-GW.
  • the response is forwarded to the MME in S10, and finally to the UE in Sll, so that then the attach procedure is completed.
  • the HSS can send also the address (es) / ID(s) of the PCRF(s) that reside in the same PM/PE .
  • the MME may send the address (es) / ID(s) of the PCRF(s) further to the P-GW in the session reguest message. This way the P-GW can automatically, and optimally, select a PCRF that resides in the same PM/VM.
  • the HSS can send also the address (es) / ID(s) of the P-CSCF(s) that reside in the same PM/PE.
  • the MME may send the address (es) / ID(s) of the P-CSCF(s) further to the P-GW in the session reguest message.
  • the P-GW may then use the address (es) / ID(s), as per current 3GPP specifications, to inform the UE about the available P-CSCF(s) . This way the P-GW can automatically, and optimally, make the UE select a P-CSCF that resides in the same PM/VM. (In the current 3GPP specifications the P-CSCF addresses are preconfigured in the P-GW.)
  • Fig. 3 shows a signaling flow in which also the two modifications described above are realized.
  • Fig. 3 is similar to Fig. 2, so that in the following only the differences are described. That is, messages indicated by the same reference sign are identical to those as shown in Fig. 2, so that they will not be explained again.
  • the HSS does not only select and/or prioritize the P-GW, but also PCRF addresses/IDs, on the same PM, accordingly. If the APN is IMS, HSS may also select and/or prioritize P-CSCF addresses/IDs, on the same PM, accordingly.
  • these address (es ) /identity ( ies ) are included in the response to the MME.
  • the reguest sent from the MME to the P-GW does not only include the user-ID, but also the address (es) and/or identities of the P-CSCF and/or PCRF.
  • the P-GW selects a PCRF as per received addresses / IDs.
  • P-GW saves received P-CSCF address(es) / ID(s).
  • the received PCRF and/or P-CSCF addresses / Ids may overwrite possible pre-configured addresses / IDs .
  • PCRF and P- CSCF addresses / IDs are added in the message exchange between HSS and MME, and in the message exchange between MME and P-GW, in order to fully optimize the management and orchestration of 3GPP mobile network resources.
  • this is not necessary, and an example embodiment realizing a minimum solution needs only one new parameter (PM/PE identity) in the HSS .
  • virtualized network entities which should work together are selected such that they are running on the same physical entity .
  • some environments support optimized communication between VMs residing on the same physical environment / PM by way of supporting inter VM communication through e.g. common memory within the PM or by applying virtual switching, i.e. avoiding looping through input/output facilities and possible PM external transmission paths and/or entities.
  • VMs residing on the same PM/PE can communicate with each other on the hypervisor/OS level, thus speeding up operations and consuming less (input/output (I/O) and PM external) resources.
  • VMs virtual network entities
  • PE physical environment
  • PM physical machine
  • the HSS is made aware of the physical environment information (as per the present invention) in some form. If the current 3GPP mechanisms (and their further developments) are not (re- )used, it means that virtualization causes changes in the application level in many places of the 3GPP architecture and specifications .
  • apparatuses and methods are provided, by which identities of virtualized network entities which are realized as virtual machines or as entities running on virtual machines in a virtualized network, and identities of physical entities on which the virtualized network entities are carried out, are stored in a memory, and an identity of at least one virtualized network entity is selected based on an identity of the physical entity on which the at least one virtualized network entity is carried out. For example, when a reguest for selecting a virtualized network entity (e.g., P-GW shown in Fig. 1) is received, a virtualized network entity is selected which is carried out on the same physical entity as the reguesting entity (e.g., the MME shown in Fig. 1) .
  • a reguest for selecting a virtualized network entity e.g., P-GW shown in Fig. 1
  • a virtualized network entity is selected which is carried out on the same physical entity as the reguesting entity (e.g., the MME shown in Fig. 1) .
  • an apparatus which comprises means for storing identities of virtualized network entities which are realized as virtual machines or as entities running on virtual machines in a virtualized network, and identities of physical entities on which the virtualized network entities are carried out, and means for selecting an identity of at least one virtualized network entity based on an identity of the physical entity on which the at least one virtualized network entity is carried out.
  • an apparatus which comprises means for performing a network control function as a virtual machine or as an entity running on a virtual machine on a physical entity, means for sending a reguest for selecting a virtualized network entity to a network database entity, means for including information regarding the physical entity into the reguest, and means for receiving a response from the network database entity including an identity of at least one virtualized network entity selected based on the physical entity.
  • an apparatus which comprises means for performing a network control function as a virtual machine or as an entity running on a virtual machine on a physical entity, means for receiving a control message including an identity of at least one virtualized network entity selected based on the physical entity, and means for requesting or allocating the at least one virtualized network entity to a user equipment.
  • an access technology via which signaling is transferred to and from a network element may be any technology by means of which a network element or sensor node can access another network element or node (e.g. via a base station or generally an access node) .
  • Any present or future technology such as WLAN (Wireless Local Access Network), WiMAX (Worldwide Interoperability for Microwave Access), LTE, LTE-A, Bluetooth, Infrared, and the like may be used; although the above technologies are mostly wireless access technologies, e.g. in different radio spectra, access technology in the sense of the present invention implies also wired technologies, e.g. IP based access technologies like cable networks or fixed lines but also circuit switched access technologies; access technologies may be distinguishable in at least two categories or access domains such as packet switched and circuit switched, but the existence of more than two access domains does not impede the invention being applied thereto,
  • stations and transmission nodes may be or comprise any device, apparatus, unit or means by which a station, entity or other user equipment may connect to and/or utilize services offered by the access network; such services include, among others, data and/or (audio-) visual communication, data download etc.;
  • a user eguipment or communication network element may be any device, apparatus, unit or means by which a system user or subscriber may experience services from an access network, such as a mobile phone or smart phone, a personal digital assistant PDA, or computer, or a device having a corresponding functionality, such as a modem chipset, a chip, a module etc., which can also be part of a UE or attached as a separate element to a UE, or the like;
  • CMOS Complementary MOS
  • BiMOS Bipolar MOS
  • BiCMOS Bipolar CMOS
  • ECL emitter Coupled Logic
  • TTL Transistor- Transistor Logic
  • ASIC Application Specific IC
  • FPGA Field- programmable Gate Arrays
  • CPLD Complex Programmable Logic Device
  • DSP Digital Signal Processor
  • an apparatus may be represented by a semiconductor chip, a chipset, or a (hardware) module comprising such chip or chipset; this, however, does not exclude the possibility that a functionality of an apparatus or module, instead of being hardware implemented, be implemented as software in a (software) module such as a computer program or a computer program product comprising executable software code portions for execution/being run on a processor;
  • a device may be regarded as an apparatus or as an assembly of more than one apparatus, whether functionally in cooperation with each other or functionally independently of each other but in a same device housing, for example.

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  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne des appareils et des procédés au moyen desquels des identités d'entités de réseau virtualisé qui sont réalisées en tant que machines virtuelles ou en tant qu'entités exploitées sur des machines virtuelles d'un réseau virtualisé, et des identités d'entités physiques sur lesquelles sont exécutées les entités de réseau virtualisé, sont stockées dans une mémoire, et une identité d'au moins une entité de réseau virtualisé est sélectionnée sur la base d'une identité de l'entité physique sur laquelle est exécutée ladite entité de réseau virtualisé. Par exemple, lors de la réception d'une requête de sélection d'une entité de réseau virtualisé, une entité de réseau virtualisé qui est exécutée sur la même entité physique que l'entité de requête est sélectionnée.
EP13731123.9A 2013-06-21 2013-06-21 Sélection de machines virtuelles ou d'entités de réseau virtualisé Ceased EP3011448A1 (fr)

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US10555214B2 (en) 2015-03-20 2020-02-04 Nokia Solutions And Networks Gmbh & Co. Kg Coexistence of software defined network, network function virtualization and legacy networks
JP5898356B1 (ja) * 2015-04-28 2016-04-06 株式会社Ｎｔｔドコモ 通信制御システム
US9979562B2 (en) * 2015-05-27 2018-05-22 Sprint Communications Company L.P. Network function virtualization requirements to service a long term evolution (LTE) network
EP3326406B1 (fr) * 2015-07-23 2020-05-27 Nokia Solutions and Networks Oy Commande de fonction d'accélération dans un réseau
US11016819B2 (en) 2019-08-16 2021-05-25 Cisco Technology, Inc. Optimizing clustered applications in a clustered infrastructure

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US9588821B2 (en) * 2007-06-22 2017-03-07 Red Hat, Inc. Automatic determination of required resource allocation of virtual machines
JP5011006B2 (ja) * 2007-07-03 2012-08-29 株式会社日立製作所 リソース割当方法、リソース割当プログラム、および、リソース割当装置
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