WO2013000850A1 - Procédé pour gérer une affectation d'adresse ip dans des réseaux d'accès - Google Patents

Procédé pour gérer une affectation d'adresse ip dans des réseaux d'accès Download PDF

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Publication number
WO2013000850A1
WO2013000850A1 PCT/EP2012/062192 EP2012062192W WO2013000850A1 WO 2013000850 A1 WO2013000850 A1 WO 2013000850A1 EP 2012062192 W EP2012062192 W EP 2012062192W WO 2013000850 A1 WO2013000850 A1 WO 2013000850A1
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WO
WIPO (PCT)
Prior art keywords
policy
address
node
pcrf
address assignment
Prior art date
Application number
PCT/EP2012/062192
Other languages
English (en)
Inventor
Ronald PABLOS SÁNCHEZ
María Antonia LÓPEZ AJENJO
Original Assignee
Telefonica, S.A.
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 Telefonica, S.A. filed Critical Telefonica, S.A.
Publication of WO2013000850A1 publication Critical patent/WO2013000850A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H04L61/503—Internet protocol [IP] addresses using an authentication, authorisation and accounting [AAA] protocol, e.g. remote authentication dial-in user service [RADIUS] or Diameter

Definitions

  • the present invention generally relates to a method to manage IP address assignment in access networks, said access networks implementing a Policy and Charging and Control, or PCC, architecture and more particularly to a method wherein said IP address assignment is performed by a Policy and Charging Rules Function, or PCRF, node
  • policy architectures to address the same problem: to apply different policies to users depending on their real- time context and subscription. These policies cover, apart from access control, quality of service (QoS) and charging policies.
  • QoS quality of service
  • charging policies The most commonly adopted specification regarding policy architecture is 3GPP TS 23.203 "Policy and Charging and Control Architecture” (PCC).
  • PCC allows charging control and policy control over user flows. Although at the beginning it was focus on 3G access networks, in the last releases it also provides recommendations to other wireless technologies, such as WiFi and WiMax, and in general the model has been extended to cover heterogeneous access networks, either fixed as wireless access networks
  • PCC architecture is mainly compounded of a control central node, PCRF (Policy and Charging Rules Function) acting as a policy decision point able to evaluate the suitable policy to enforce in PCEF, located at the transport layer (Policy and Charging Enforcement Function).
  • PCRF Policy and Charging Rules Function
  • the communication between these two elements is the Gx interface.
  • the PCEF role is performed by a GGSN (Gateway GPRS Support Node), although other nodes, like DPIs, could play also the PCEF role.
  • the GGSN is in charge of IP address assignment for the IP bearers requested by users. This assignment can be local, that is, performed in the own GGSN, but typically the IP address assignment is carried out through an AAA server.
  • GGSN acting as PCEF within the PCC architecture, receives a bearer establishment request (1 ). Then, GGSN asks an AAA server for an IP to be assigned to this new bearer connection (2). Afterwards, GGSN asks PCRF(3) for resources authorization through Gx interfaces, to finally establish the bearer connection (4), according to the parameters collected from the mentioned different nodes.
  • PCEF supplies the IP address to the PCRF at IP- CAN session establishment time.
  • the PCRF is aware of the IP assigned to the IP bearer, however, it has no control over the IP addressing that must be used for the authorized resources, like the authorized services addressing.
  • PCRF cannot establish addressing policies since it does not assign the IP to be used by the bearer.
  • PCRF can distinguish and apply policies based on the IP ranges assigned to the user, this procedure results a post IP assignment, before knowing the authorized services/resources the user is allowed to, which may outcome in conflicts between the user IP address and the addressing policies to establish for that user. For example, a VIP user can be assigned a different addressing range that results in a different routing path or a higher routing priority.
  • the present invention provides a method to manage IP address assignment in access networks, said access networks implementing a Policy and Charging and Control, or PCC, architecture.
  • PCC Policy and Charging and Control
  • IP address assignment is performed by a Policy and Charging Rules Function, or PCRF, node.
  • PCRF Policy and Charging Rules Function
  • Figure 1 shows a general and current scheme of PCC architecture.
  • Figure 2 shows current interaction between different entities of a PCC architecture when performing a bearer establishment process.
  • Figure 3 shows a general scheme of PCC architecture according to an embodiment of the present invention.
  • FIG. 4 shows the interchange of messages between PCEF and PCRF nodes according to an embodiment of the present invention.
  • Figure 5 shows a use case of the present invention wherein a service-based addressing policy is assigned by the PCEF to a user equipment.
  • Figure 6 shows a use case of the present invention wherein a special addressing schema is used for premium users.
  • the present invention improves 3GPP policy mechanisms by defining extensions over 3GPP Gx interface (TS 29.212). It enables the bearer IP address assignment by the PCRF, permiting the establishment of suitable addressing policies, based on the authorized services/resources for that user connection, and linking these policies to the standard resource and charging policies managed by the PCRF.
  • AAA server which allocates an IP address for the user communication, as shown in Figure 1.
  • PCRF which makes the IP assignment according to the required addressing needs. This fact does not involve that AAA server is used for other purposes, like authentication and/or accounting.
  • the PCRF decides the policy rules to apply at the PCEF for that user session, among which the addressing policies are included, that is, IP address assignment. This way, the PCRF can impose the policy addressing otherwise it didn't be possible, since the AAA server does not know beforehand the policies that will be assigned to the user by the PCRF.
  • Gx specification states that the PCEF shall send a
  • CCR message with CC-Request-Type AVP (AVP code 416), of type Enumerated, set to the value "INITIAL_REQUEST" and other attributes will include the UE IPv4 address within the Framed-IP-Address and/or the UE IPv6 prefix within the Framed-IPv6-Prefix AVP, if available.
  • AVP code 8 defined in RFC 4005, is of type OctetString and contains an IPv4 address.
  • AVP code 97 also defined in RFC 4005, is of type OctetString and contains an IPv6 prefix.
  • Some services to be provided require that the user traffic goes through a service center where being properly processed, as shown in Figure 5. In contrast, other services do not need to be processed at any service centre, accessing the Internet directly.
  • the PCRF decides the addressing policies to apply based on the service to be used and assigns the IP address, it avoids IP addressing conflicts that may occur if an AAA server was used, where the IP assignment takes place before knowing the allowed/subscribed services for the user. ⁇ Premium channel
  • Some users are willing to pay a bit more for a better service quality. Therefore, when retrieving data from content servers (e.g. CDNs), it is interesting to provide premium users with an access channel whose treatment guarantees the quality of service.
  • content servers e.g. CDNs
  • PCRF constitutes a central node where the network intelligence resides
  • IP addressing could be carried out in an easier and more suitable way, avoiding IP addressing conflicts that may occur.
  • the invention will provide some easy and low cost mechanisms to enhance the flexibility of dynamic control of connectivity services, since it is an extension of a commonly adopted reference point among PCEF nodes.
  • the invention will enable the operator to link the addressing plan to the resource and charging policies, giving as a result more complex and ambitious policies that cover more service scenarios.
  • the invention will reduce the time-to-market and will extend easily the portfolio of new connectivity service, since the invention facilitates new service scenarios which will be difficult to carry out otherwise.
  • the invention will enable to simplify the architecture complexity, since the IP assignment is transferred to the PCRF, so it is not necessary an AAA server for this purpose.

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Dans le procédé de la présente invention, lesdits réseaux d'accès implémentent une architecture de politique et de facturation et de commande, ou PCC, et le procédé est caractérisé en ce que ladite affectation d'adresse IP est réalisée par un nœud de fonction de règles de politique et de facturation, ou PCRF.
PCT/EP2012/062192 2011-06-30 2012-06-25 Procédé pour gérer une affectation d'adresse ip dans des réseaux d'accès WO2013000850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201131106 2011-06-30
ESP201131106 2011-06-30

Publications (1)

Publication Number Publication Date
WO2013000850A1 true WO2013000850A1 (fr) 2013-01-03

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Application Number Title Priority Date Filing Date
PCT/EP2012/062192 WO2013000850A1 (fr) 2011-06-30 2012-06-25 Procédé pour gérer une affectation d'adresse ip dans des réseaux d'accès

Country Status (2)

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AR (1) AR087019A1 (fr)
WO (1) WO2013000850A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018144330A1 (fr) * 2017-02-03 2018-08-09 T-Mobile Usa, Inc. Indice ip destiné à l'attribution d'adresse ip sur la base d'une fonction de commande de politique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011047726A1 (fr) * 2009-10-22 2011-04-28 Telefonaktiebolaget L M Ericsson (Publ) Découverte d'adresse p-cscf
EP2339781A1 (fr) * 2008-09-18 2011-06-29 Huawei Technologies Co., Ltd. Procédé et système pour réaliser la commande de politique et de facturation sur la scène de multiples réseaux de données par paquets (pdn)

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2339781A1 (fr) * 2008-09-18 2011-06-29 Huawei Technologies Co., Ltd. Procédé et système pour réaliser la commande de politique et de facturation sur la scène de multiples réseaux de données par paquets (pdn)
WO2011047726A1 (fr) * 2009-10-22 2011-04-28 Telefonaktiebolaget L M Ericsson (Publ) Découverte d'adresse p-cscf

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Policy and charging control architecture (Release 11), 3GPP TS 23.203 V11.2.0", 12 June 2011 (2011-06-12), pages 1 - 140, XP055023827, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/Specs/archive/23_series/23.203/23203-b20.zip> [retrieved on 20120404] *
"Universal Mobile Telecommunications System (UMTS); LTE; Policy and charging control over Gx reference point (3GPP TS 29.212 version 10.3.0 Release 10)", TECHNICAL SPECIFICATION, EUROPEAN TELECOMMUNICATIONS STANDARDS INSTITUTE (ETSI), 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS ; FRANCE, vol. 3GPP CT 3, no. V10.3.0, 1 June 2011 (2011-06-01), XP014066131 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018144330A1 (fr) * 2017-02-03 2018-08-09 T-Mobile Usa, Inc. Indice ip destiné à l'attribution d'adresse ip sur la base d'une fonction de commande de politique
US10404655B2 (en) 2017-02-03 2019-09-03 T-Mobile Usa, Inc. IP index for IP address allocation based on policy control function
CN110235427A (zh) * 2017-02-03 2019-09-13 T移动美国公司 基于策略控制功能的用于ip地址分配的ip索引

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Publication number Publication date
AR087019A1 (es) 2014-02-05

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