Intarea WG R. Zhang Internet-Draft China Telecom Intended status: Informational July 16, 2012 Expires: January 17, 2013 Carrier's Wifi at Home Network draft-zhang-intarea-wifi-home-network-01 Abstract Today operator could share the wifi network at subscriber's home for their public subscribers. It need to upgrade the home router which has integrated wifi already. Some technical requirements have been clarified in this document. Requirements Language The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119]. Status of this Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on January 17, 2013. Copyright Notice Copyright (c) 2012 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents Zhang Expires January 17, 2013 [Page 1] Internet-Draft Wifi Home Network July 2012 carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Network Architecture . . . . . . . . . . . . . . . . . . . . . 3 3. Requirements for Carrier's home network . . . . . . . . . . . . 4 4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4 5. Security Considerations . . . . . . . . . . . . . . . . . . . . 4 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 4 7. Normative References . . . . . . . . . . . . . . . . . . . . . 4 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 5 Zhang Expires January 17, 2013 [Page 2] Internet-Draft Wifi Home Network July 2012 1. Introduction Lots of users are using Wifi at home, but they are not Carrier's Wifi, using Carrier's ESSID at home could help to expand operator's wifi network. Normally home wifi is integrated with home router, so home router need to be updated to support both private home ESSID and Carrier's ESSID. Operator could either subsidize or compensate some price for user who could allow to share their home wifi for their neighbors or passing-by people. 2. Network Architecture The network architecture is shown as belowed figure 1, home router will advertise two ESSIDs, one is for home user "Bob's home", the other is Operator's ESSID. Sometime home user need to deploy his own wifi AP2 to expand the coverage of wifi, that wifi will have the diffculty to advertise operator's ESSID because this AP2 is bought by user other than operator's free offer. +----------------------------------+ +----------------------+ | | | | | ESSID 2: Operator's wifi | | +-------+ | | ESSID 1: Bob's Home | | |Policy | | | +----+ # | | +-------+ | | |Home|- - - - - - - - - - >| | | | +-->Mobile | | |User| _ - - - - - >+--------+ | | | Core | | +----+ / | Home |CAPWAP +-------+ | | | / | Router |--------| WLC | | | | +--------+ / |Wifi AP1|========| BRAS |===+==>Internet| | |Neighbor|- +--------+ | SR | | | | |User | | | +-------+ | | | +--------+ +--------+ | | | | +--->IPTV | | |Wifi AP2|-----+ | | +------+ +------+ | | +--------+ | | |Portal|--| AAA | | | | | +------+ +------+ | +----------------------------------+ +----------------------+ Figure 1: Carrier's wifi at home Operator's network architecture needs some upgrade which seems mostly diffculty part, but actually feasible since it is software based upgrade. WLC which support CAPWAP need to be considered to be deployed standalone or integrate together with BRAS. Policy Server which is used to assign QoS policy at home router, Wifi Portal page need to be used to authenticate the opeartor's wifi user. Zhang Expires January 17, 2013 [Page 3] Internet-Draft Wifi Home Network July 2012 3. Requirements for Carrier's home network The requirement for carrier's wifi at home could be listed below 1) The backhaul of home router need to upgrade to support CAPWAP protocols, BRAS in the backend also need to route operator's wifi traffic and CAPWAP control signaling to Wireless LAN Controller correctly. 2) Operator's policy need to be downloaded into the home router to configure QoS policy inside the homoe router. Mostly home user's traffic has high priority than neighbor operator's user or visiting operator's user 3) Neighbor and passying-by people need to be authenticated by the operator's portal. 4) Home router need to differentiate different VLAN network for home user and opeartor'wifi user. 4. IANA Considerations This document makes no request of IANA. Note to RFC Editor: this section may be removed on publication as an RFC. 5. Security Considerations Some applications may rely on the source address as the credentials, it may need to reestablish the new credential after the application switchs into a new source address. 6. Acknowledgements The author thanks the discussion from et al. in the development of this document. 7. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. Zhang Expires January 17, 2013 [Page 4] Internet-Draft Wifi Home Network July 2012 Author's Address Rong Zhang China Telecom No.109 Zhongshandadao avenue Tianhe District, Guangzhou 510630 China Email: zhangr@gsta.com Zhang Expires January 17, 2013 [Page 5]