WO2015096051A1 - Procédé et appareil pour équilibrage de charge - Google Patents

Procédé et appareil pour équilibrage de charge Download PDF

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Publication number
WO2015096051A1
WO2015096051A1 PCT/CN2013/090396 CN2013090396W WO2015096051A1 WO 2015096051 A1 WO2015096051 A1 WO 2015096051A1 CN 2013090396 W CN2013090396 W CN 2013090396W WO 2015096051 A1 WO2015096051 A1 WO 2015096051A1
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WO
WIPO (PCT)
Prior art keywords
list
apn
load
pdn connection
bearers
Prior art date
Application number
PCT/CN2013/090396
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English (en)
Chinese (zh)
Inventor
王硕
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/090396 priority Critical patent/WO2015096051A1/fr
Priority to CN201380002733.2A priority patent/CN105264856B/zh
Publication of WO2015096051A1 publication Critical patent/WO2015096051A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/17—Selecting a data network PoA [Point of Attachment]

Definitions

  • the present invention relates to the field of network management, and in particular, to a load balancing method and apparatus.
  • the architecture of the SAE (System Arc Hitecture Evo Hit io n) system includes MME (Mobility Management Entity), S - GW (Serving Gateway, Service Gateway Entity), P-GW (Packet Data Network Gateway), and other network element devices for management and accounting functions.
  • MME Mobility Management Entity
  • S - GW Serving Gateway, Service Gateway Entity
  • P-GW Packet Data Network Gateway
  • the SAE system completes user connections through these network element devices. The task of accessing the 3GPP access network and non-3GPP access networks.
  • a network operator's network may provide services for multiple operators at the same time.
  • multiple P-GWs may need to be deployed according to the service characteristics of any carrier.
  • the multiple P-GWs may have the same APN (Access Point Name). Therefore, when the operator establishes a PDN (Packet Data Network) connection according to the APN, multiple carriers will be connected.
  • a P-GW with the same APN is used as the access object.
  • PDN Packet Data Network
  • the MME can select one of the P-GWs to establish a PDN connection according to the throughput capability and the carrying capacity of each P-GW.
  • An embodiment of the present invention provides a method and apparatus for load balancing, which is used to solve the problem that when the MM E requests to access the P-GW, the P-GW is selected according to the weight information of multiple P-GWs having the same APN, thereby establishing a connection.
  • the present invention provides a method for load balancing, which is based on a system architecture evolution SAE system, and specifically includes:
  • the P-GW list includes a P-GW identifier of the first P-GW and a P-GW load capability factor, where the P a GW load capability factor including a resource throughput capability level and a bearer number of the first P-GW, and a resource throughput capability level of the carrier corresponding to the APN on the first PG W and Number of bearers;
  • the P-GW is selected and a PDN connection is established.
  • the selecting a P-GW and establishing a PDN connection according to the P-GW list includes:
  • the high-load state is a state in which the current resource bearer usage of the P-GW exceeds an alarm value. Or, the current resource bearer usage of the P-GW does not exceed the alarm value, but the current resource bearer usage of the operator corresponding to the APN on the P-GW exceeds the alarm value;
  • the determining, by the second P-GW that is not in a high load state in the P-GW list, is a list of low load P-GWs Includes:
  • the first message carries a P-GW identifier and an APN of a third P-GW in a high load state;
  • the determining, by the second P-GW, the low-load P-GW list that is not in a high-load state in the P-GW list also includes:
  • the second message carries a P-GW identifier and an APN of a fourth P-GW that needs to cancel a high load state;
  • the method further includes:
  • the present invention provides a device for load balancing, the device being applied to a SAE system, including:
  • An obtaining module configured to obtain an access point name APN according to the PDN connection request after receiving a PDN connection request sent by the user equipment;
  • a querying module configured to query a P-GW list formed by the first P-GW corresponding to the APN;
  • the P-GW list includes a P-GW identifier and a P-GW load capability of the first P-GW a factor, the P-GW load capability factor includes a resource throughput capability level and a bearer number of the first P-GW, and an operator that is associated with the APN is subscribed to the first P-GW Resource throughput capability level and number of bearers;
  • the connecting module includes: a determining unit, configured to determine a low-load P-GW list composed of a second P-GW that is not in a high-load state in the P-GW list; the high-load state refers to a current resource bearer usage of the P-GW The state in which the alarm value is exceeded, or the current resource bearer usage of the P-GW does not exceed the alarm value, but the current resource bearer usage of the operator corresponding to the APN on the P-GW exceeds the alarm value. ;
  • a selecting unit configured to select, according to the resource throughput capability level and the number of bearers of the second P-GW, a plurality of P-GWs having a high throughput capability level and a large carrying capacity from the low load list; Determining, by the operator corresponding to the APN, the resource throughput capability level and the number of bearers signed on the selected P-GW, and determining, from the selected P-GW, one of the selected P-GWs by the operator P-GW with high resource throughput capability and large number of bearers;
  • the connecting unit is configured to select the determined P-GW to establish a PDN connection.
  • the determining unit includes: a receiving subunit, configured to receive a first message; the first message carries a P of a third P-GW in a high load state - GW identity and APN;
  • a locating unit configured to search for a corresponding third P-GW from the P-GW list according to the P-GW identifier and the APN of the third P-GW;
  • a management subunit configured to remove, from the P-GW list, the P-GW identifier and the P-GW load capability factor of the found third P-GW from the P-GW list.
  • the receiving subunit is further used And receiving the second message; the second message carrying the fourth state that needs to cancel the high load state
  • the finding subunit is further configured to search for a corresponding fourth P-GW according to the P-GW identifier of the fourth P-GW and the APN;
  • the management subunit is further configured to add the P-GW identifier and the P-GW load capability factor of the fourth P-GW to the P-GW list.
  • the acquiring module is further configured to: after receiving a PDN connection request sent by the user equipment, acquire an APN according to the PDN connection request; according to the APN from the DNS Obtain a pre-configured P-GW list;
  • the connection module is further configured to select a P-GW and establish a PDN connection according to the obtained P-GW list.
  • the MME obtains the APN by the PDN connection request sent by the user, and queries the corresponding P-GW list according to the resource throughput of the P-GW in the P-GW list.
  • the MME not only selects according to the throughput capability and the number of bearers of the P-GW itself, but also increases the content selected according to the throughput capability and the number of bearers subscribed by the operator on the PG W, so that the MME
  • the P-GW is selected to establish a connection
  • the MME requests access to the P-GW
  • the P-GW is selected to establish a connection only according to the weight information of the multiple P-GWs having the same APN, and the resources signed by the single operator on the P-GW cannot be The problem of balanced use.
  • FIG. 1 is a flowchart of a method for load balancing according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for selecting a P-GW according to a P-GW list according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for determining a low-load P-GW list according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for releasing a high-load state of a P-GW according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a device for load balancing according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a detailed device for load balancing according to an embodiment of the present invention.
  • the embodiment of the present invention provides a load balancing method, which is applied to a SAE system.
  • the execution body of all the steps is an MME, and the method flow is as shown in FIG. 1 , and the specific method includes:
  • the APN may be obtained by parsing the home operator or the MVNO of the user equipment by using the IMSI number carried in the PDN connection request sent by the MME by the MME, or may select the process of requesting the authentication data from the MME to the HSS.
  • the embodiment of the present invention does not impose any limitation on the home operator of the user equipment that is resolved by the HSS.
  • the P-GW list includes a P-GW identifier of the first P-GW and a P-GW load capability factor, where the P-GW load capability factor includes a resource throughput capability of the first P-GW. a level and a number of bearers, and a resource throughput capability level and a number of bearers subscribed by the operator corresponding to the APN on the first P-GW.
  • Each APN corresponds to an identifier of an operator
  • the first P-GW corresponding to the APN refers to an operator corresponding to the APN or all P-GWs subscribed by the MVNO
  • each P-GW identifier corresponds to the P-GW.
  • P-GW load capacity factor of P-GW is a P-GW load capacity factor of P-GW.
  • the P-GW identifier and the P-GW load capacity factor may be pre-configured in the MME, and may be directly searched from the MME when needed, and of course, the P-GW identifier may be selected and The P-GW load capacity factor is pre-configured in the DNS.
  • the MME sends the request information carrying the APN to the DNS, and after searching from the DNS, the response message is returned to the MME, and the present invention does not do more here. limit.
  • the specific P-GW is selected according to the load capacity factor of each P-GW in the P-GW list.
  • the specific process for the description is described in the subsequent method flow, and therefore will not be described here.
  • the MME obtains the APN by the PDN connection request sent by the user, and queries the corresponding P-GW list according to the resource throughput capability of the P-GW in the P-GW list.
  • the MME not only selects according to the throughput capability and the number of bearers of the P-GW itself, but also increases the content selected according to the throughput capability and the number of bearers subscribed by the operator on the PG W, so that the MME
  • the P-GW is selected to establish a connection
  • the weight information of multiple P-GWs of the APN selects the P-GW to establish a connection, resulting in the resources signed by a single operator on these P-GWs. The problem of not being able to be balanced.
  • the embodiment of the present invention further provides an implementation manner of selecting a P-GW and establishing a PDN connection according to the P-GW list. As shown in FIG. 2, the method specifically includes:
  • the high-load state refers to a state in which the current resource bearer usage of the P-GW exceeds the alarm value, or the current resource bearer usage of the P-GW does not exceed the alarm value, but the operator corresponding to the APN is The current resource bearer usage on the P-GW exceeds the state of the alarm value.
  • the setting of the high load state for the P-GW is to avoid the burden of the MME, because when the MME sends a PDN connection request to the P-GW, the bearer capability of the P-GW may occur, or the P-GW corresponds to the P-GW.
  • the carrier has insufficient bearer capacity for signing on the P-GW. If there are insufficient resources of multiple P-GWs at the same time, the MME may need to send multiple PDN connection requests to multiple P-GWs if the PDN connection is successfully established. Therefore, the above situation is avoided by the method in which the P-GW detects whether it is in a high load state and reports it to the MME.
  • the P-GW in the low load state is the currently allowed P-GW, and the P-GW of the high load state is set to limit the load burden of the P-GW itself, or the load burden is not heavy, However, the load of an operator contracted on the P-GW on the P-GW will exceed the amount of the contracted load, so the P-GW can be considered as unavailable for the operator.
  • the P-GW when a PDN connection needs to be established, selects only the low-load P-GW to balance the load of each P-GW and the load of each operator on the subscribed P-GW.
  • the P-GW is selected according to the bearer capability of the P-GW in the low-load list, and the P-GWs with strong bearer capabilities are selected to ensure that the P-GW with strong bearer capability can be preferentially selected.
  • the resources of the P-GW with strong carrying capacity can be fully utilized, as for the selected quantity, it can be set according to specific needs, and no further restrictions are imposed here.
  • the bearer capability of the P-GW selected by the operator in the previous step is selected, and the P-GW with strong bearer capability signed by the operator is selected to ensure that the operator signs the contract.
  • the P-GW with strong carrying capacity can be preferentially selected so that the resources contracted by the operator can be allocated in a balanced manner.
  • the MME needs to go through the S-GW to select
  • the selected P-GW sends a request to create a PDN connection, and then, after receiving the request for the PDN connection, the P-GW performs the relevant PCC process, and returns a PDN connection response to the MME through the S-GW, and finally the MME replies to the user equipment.
  • the PDN connection responds and establishes a PDN connection.
  • the interaction process between devices is simplified by establishing a description of the PDN connection.
  • multiple P-GWs are selected by first determining a low-load P-GW list, and selecting a resource throughput capability level and a bearer number according to the P-GW bearer capability in the low-load list, and from these P- In the GW, a P-GW is determined according to the resource throughput capability level and the number of bearers signed by the operator, and finally the method for establishing the PDN connection by the determined P-GW is selected, so that the MME can select according to the P-GW list, and Determining the unique P-GW to establish a PDN connection provides a selection criterion for the load balancing of the P-GW, thereby providing implementability for the implementation of the load balancing method.
  • the embodiment of the present invention further provides a method for determining a low-load list.
  • the flowchart is as shown in FIG. 3, and specifically includes:
  • the first message is sent by the P-GW to the MME, and when a P-GW detects that the load of the P-GW reaches a preset alarm value, or the load of a certain operator on a certain P-GW When the alarm value of the pre-signed load is reached, the first message is sent to the MME, where the first message carries the P-GW identifier and the APN of the third P-GW in a high load state.
  • the P-GW is configured to notify the P-GW that the MME is in a high load state, where the P-GW identifier is used to identify a P-GW in a high load state, and the operator identifier is used to identify an operator in a high load state,
  • the APN is used to correspond to the corresponding P-GW and operator in the P-GW list.
  • the correspondence between the APN and the P-GW load capacity factor of the P-GW corresponding thereto and the correspondence between all the operators that are subscribed to the corresponding P-GW are stored in the third P-GW list. And the correspondence between the load capacity factors of each operator on the P-GW. Therefore, the corresponding P-GW can be found according to the P-GW identity and the APN.
  • the P-GW identifier and the P-GW load capability factor corresponding to the P-GW are deleted from the P-GW list, and the P-GW list is not available in this manner. Use the P-GW to get rid of it.
  • the identifier of the corresponding P-GW and the P-GW load capacity factor are searched for and deleted from the P-GW list according to the received message including the P-GW identifier and the APN in a high load state.
  • the P-GW in the high load state is removed from the list of PDN connections selected by the P-GW, so that when a certain P-GW is in a high load state, the MME cannot select and establish a PDN connection, and further Select other P-GWs in low load state
  • the P-GW with strong load capability is selected to establish a PDN connection, and the P-GW that the MME learns to be in a high load state is obtained, and the method for the MME to select the P-GW is prohibited, thereby ensuring the implementability of the load balancing.
  • the embodiment of the present invention further provides a method for releasing the high load state of the P-GW. Specifically, as shown in FIG. 4, the method includes:
  • the second message carries the P-G W identifier and the APN of the fourth P-GW that need to cancel the high load state.
  • a P-GW detects that the load has decreased below the alarm value, it sends a message to the MME that cancels the high load state of the P-GW, and carries the P-GW of the P-GW in the message.
  • the GW identifier and APN are used for corresponding lookup.
  • the P-GW identifier and the APN may be searched in the P-GW list of all P-GWs stored in the MME, and when the corresponding P-G W is found, the P-GW load capacity factor may be obtained according to the corresponding relationship.
  • the MME receives a message from the P-GW corresponding to the APN to release the high-load state of the P-GW, and the P-GW identifier and the APN in the message find the corresponding P-GW and P-GW load capacity factor, then the P-GW and its P-GW load energy will be found
  • the manner in which the load factor is stored in the P-GW list enables the MME to reselect the P-GW to establish a PDN connection when the P-GW changes from a high load state to a low load state, thereby releasing the P-GW from the high load state. Implementability and provide real-time availability of low-load PG W lists.
  • Another embodiment of the present invention provides a device for load balancing, which is applied to a S AE system, as shown in FIG. 5 and FIG. 6, to implement the method flow shown in any of FIG. 1 to FIG.
  • the method includes: an obtaining module 51, configured to acquire an access point name APN according to the PDN connection request after receiving a PDN connection request sent by the user equipment.
  • the querying module 52 is configured to query a P-GW list formed by the first P-GW corresponding to the APN; the P-GW list includes a P-GW identifier and a P-GW load of the first P-GW a capability factor, the P-GW load capability factor includes a correspondence between a resource throughput capability level of the first P-GW and a bearer number, and an operator corresponding to the APN is in the first P-GW The resource throughput capability level and number of bearers signed on the board.
  • connection module 53 is configured to select a P-GW according to the P-GW list and establish a PDN connection.
  • the connection module includes:
  • the determining unit 54 is configured to determine a low-load P-GW list composed of a second P-GW that is not in a high-load state in the P-GW list, where the high-load status refers to a current resource bearer number of the P-GW.
  • the selecting unit 55 is configured to select, according to the resource throughput capability level and the number of bearers of the second PG W, a plurality of P-GWs having a high throughput capability level and a large carrying capacity from the low load list; Determining, by the corresponding operator, the resource throughput capability level and the number of bearers signed on the selected P-GW, and determining, from the selected P-GW, one of the selected operators in the selected ⁇ -GW The P-GW with a high level of resource throughput capability and a large number of bearers.
  • the connecting unit 56 is configured to select the determined P-GW to establish a PDN connection.
  • the determining unit includes:
  • the receiving subunit 57 is configured to receive the first message, where the first message carries the P-GW identifier and the ⁇ of the third P-GW in a high load state.
  • the finding subunit 58 is configured to search for a corresponding third P-GW from the P-GW list according to the P-GW identifier of the third P-GW.
  • the management sub-unit 59 is configured to remove, from the P-GW list, the P-GW identifier and the P-GW load capability factor of the found third P-GW from the P-GW list.
  • the receiving subunit 57 is further configured to receive the second message, where the second message carries the P-GW identifier and the APN of the fourth P-GW that need to cancel the high load state.
  • the lookup 58 subunit is further configured to search for the corresponding fourth P-GW according to the P-GW identity of the fourth P-GW and the APN.
  • the management 59 subunit is further configured to add the P-GW identifier and the P-GW load capability factor of the fourth P-GW to the P-GW list.
  • the obtaining module 51 is further configured to: after receiving the PDN connection request sent by the user equipment, acquire an APN according to the PDN connection request; and obtain a pre-configured P-GW list from the DNS according to the APN.
  • the connection module 53 is further configured to select a P-GW and establish a PDN connection according to the obtained P-GW list.
  • the MME obtains the APN by the PDN connection request sent by the user, and queries the corresponding P-GW list according to the resource throughput capability of the P-GW in the P-GW list.
  • the MME not only selects according to the throughput capability and the number of bearers of the P-GW itself, but also increases the content selected according to the throughput capability and the number of bearers subscribed by the operator on the PG W, so that the MME
  • the P-GW is selected to establish a connection
  • the weight information of the plurality of P-GWs of the APN selects the P-GW to establish a connection, and the problem that the resources signed by the single operator on these P-GWs cannot be balancedly utilized.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
  • the technique of the present invention The portion of the program that contributes in essence or to the prior art may be embodied in the form of a software product stored in a readable storage medium, such as a computer floppy disk, hard disk or optical disk, etc., including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil d'équilibrage de charge qui se rapportent au domaine de la gestion de réseau et sont utilisés pour résoudre le problème de l'utilisation mal équilibrée de ressources, occupées par un opérateur individuel sur des P-GW (Passerelle de réseau de données par paquets), qui est provoqué par la sélection d'une P-GW simplement en fonction des informations de poids concernant la pluralité de P-GW ayant le même APN (Nom de Point d'Accès), lorsqu'une MME (Entité de Gestion de Mobilité) demande à accéder à la P-GW. Le procédé selon la présente invention consiste à faire l'acquisition d'un APN conformément à une demande de connexion PDN (Réseau de Données par Paquets), demander une liste de P-GW composée des P-GW correspondant à l'APN, et sélectionner une P-GW pour établir une connexion PDN conformément aux identifiants des P-GW et au niveau de capacité de rendement de ressource et à la charge ponctuelle occupée par un opérateur correspondant à l'APN sur les P-GW. Les modes de réalisation de la présente invention s'appliquent notamment à un processus d'établissement d'une connexion PDN.
PCT/CN2013/090396 2013-12-25 2013-12-25 Procédé et appareil pour équilibrage de charge WO2015096051A1 (fr)

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CN201380002733.2A CN105264856B (zh) 2013-12-25 2013-12-25 一种负载均衡的方法和装置

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CN102917443A (zh) * 2012-10-23 2013-02-06 中国联合网络通信集团有限公司 网关选择及信息发送方法、装置及网络系统

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* Cited by examiner, † Cited by third party
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EP3200408A1 (fr) * 2016-01-29 2017-08-02 Deutsche Telekom AG Procédé pour améliorer l'équilibrage de charge dans un réseau de communication mobile, serveur d'abonné domestique et entité de gestion de mobilité pour améliorer l'équilibrage de charge dans un réseau de communication mobile, réseau de communication mobile, programme et produit de programme informatique
US10063483B2 (en) 2016-01-29 2018-08-28 Deutsche Telekom Ag Enhanced load balancing in a mobile communication network

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