Wi-Fi Strategies for Mobile Operators

発行 Heavy Reading 商品コード 224233
出版日 ページ情報 英文 27 Pages
納期: 即日から翌営業日
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携帯電話事業者のWiFi戦略 Wi-Fi Strategies for Mobile Operators
出版日: 2011年11月23日 ページ情報: 英文 27 Pages



第1章 イントロダクション/主な調査結果

  • 主な調査結果
  • レポートの範囲と構成

第2章 スマートフォンの成長とWiFiの成長

  • スマートフォン利用の半数がすでにWiFiである
  • デバイス種類別WiFi利用
  • 成長著しい事業者向けWiFi
  • WiFiとライセンス付小型携帯電話
  • サービスプロバイダー向けWiFi技術のサプライヤー
  • サービスプロバイダー向けWiFiの主な技術

第3章 WiFiの開拓地

  • WiFiの種類と携帯電話事業者にとっての魅力
  • 公共ホットスポット
  • WiFiゾーン
  • 住居用WiFi
  • その他のWiFi

第4章 WiFiの事業者環境への統合

  • 成長の段階
  • 携帯加入契約に公共WiFiアクセスを追加する
  • オートログインとAAAの統合
  • WLANからの3GPPパケットサービス利用
  • 3GPPとWiFiアクセスのシームレスサービス

第5章 セルラーネットワークの統合

  • EPC
  • l-WLANからEPCをベースとした統合へ
  • IPフローモビリティ



The growth of Wi-Fi is driven by unlicensed spectrum, standardization and the cost curves that derive from advanced silicon design and manufacturing. Paired with growth in smartphones, this has created conditions that have literally revolutionized the way in which mobile data services are consumed and how the industry is structured.

The great success of mobile Wi-Fi is not a surprise, as such - although mobile operators did once actively lobby handset makers against integrating Wi-Fi capability. In fact, Wi-Fi's ascendency had been long predicted by technology watchers. It was the launch of the Wi-Fi-enabled iPhone in 2007 that signaled that the game had changed, and confirmed that local-area wireless technology had made an indelible mark on the cellular industry.

Consider, for example, how advanced, high-end smartphone use cases (and by extension, subscriber value) have shifted to Wi-Fi. With rich-media applications such as Skype, Facetime, BBC iPlayer, Spotify and others being designed to run over Wi-Fi rather than 3G - and in some cases restricted to Wi-Fi because cellular is too congested or expensive - it is clear that users derive value in this form of connectivity that is additive to the 3G wide-area experience. Reclaiming some of that usage and influence is strategically important for operators and is underpinning a renewed push to integrate Wi-Fi more effectively into their subscriber offers.

In addition to these high-end applications, common use cases for Wi-Fi include in-home usage, office connectivity, “deep indoor” venues with poor cellular coverage (e.g., conferences) and as an affordable alternative to mobile data roaming. In all these cases, operators see strategic value in being able to participate in this usage and clear potential to use their capabilities to deliver a better Wi-Fi service to end users. This situation led one senior operator executive interviewed for this report to state that “Wi-Fi is the comeback story of the year”. Like many other operators - and nearly all Tier 1s - it has a range of initiatives underway to evaluate and deploy Wi-Fi solutions.

The challenge of Wi-Fi in the cellular context, then, is not so much conceptual, but for mobile operators to identify specifically where and how Wi-Fi can help deliver better service to end users and to understand, in detail, how to integrate Wi-Fi technically at mass-market scale.

Wi-Fi Strategies for Mobile Operators analyzes the technology advances and ongoing standards work that will allow mobile operators and their customers to take better advantage of Wi-Fi. From a commercial perspective, the report addresses integration of Wi-Fi with the cellular environment, examines to what extent “managed Wi-Fi” should be made part of the end-user service, and explains why Wi-Fi integration should fundamentally be viewed as a platform for service innovation and revenue growth, not simply an offload solution to reduce network costs.

The report provides strategic highlights for 14 major mobile operators that are making substantial investments in Wi-Fi access networks, and examines the positioning of more than 23 leading vendors that are working to help operators influence and enhance the Wi-Fi user experience.

Making Wi-Fi into an operator-friendly technology will require significant technology development. It may be a cliche, but the characterization that “Cellular is from Venus, Wi-Fi is from Mars” has more than a grain of truth. The 3GPP World that defines 3G and LTE and the IEEE World that defines Ethernet and Wi-Fi do occasionally speak different languages, and both are therefore working to adapt their technologies for mobile operator Wi-Fi. The excerpt below highlights some of the initiatives being pursued by the cellular industry through the 3GPP.

Cellular Network-Oriented Initiatives for Wi-Fi Integration

SIM AuthenticationSIM card is the supplicant in the 802.1X architecture;
enables secure connections and auto login;
uses mobile identity for billing and policy
Already in limited use by some progressive operators,
butis expected to became more widespread in 2012;
it's first major step toward service provider Wi-Fi
I-WLANIntegration of Wi-Fi access with the 3G packet coe;
the basis for SIM authentication, as mentioned above
Control-plane (SIM authentication) integration, as mentioned above;
unclear whether bearer-plane integration will ever be widely deployed
Evolved Packet Core(EPC) IntegrationEPC is designed to be Access-independent;
it takes over from I-WLAN and
becomes the anchor for mobility aoross access types
EPC is being deployed already;
the Wi-Fi integration piece is probably a few years away,
but could start as soon as 2012
Access Network Decision & Selection Function(ANDSF)A core network solution that instructs devices to
dermine when and to which Wi-Fi APS they should connect
Already being deployed in South Korea,
but it is less clear how this solution will evolve elswhere;
proprietary implementations are also emerging
IP Flow Mobility (IFOM)Allows a device to connect to cellular and
Wi-Fi networks simultaneously and specific applications
over a specified access patch (e.g., video call over LTE, best-effort over Wi-Fi)
A Release 10 feature, and likely to be a long time coming;
still in the R&D phase today and not yet relevant from practical perspective

Source: Heavy Reading

Making Wi-Fi part of the carrier network is a long-term objective and one that, arguably, the majority of operators have still not embraced. Even where there is clarity that Wi-Fi is a useful technology, the extent to which it should be formally part of the operator's service set, and then should be integrated into the network, is unclear at most operators. A phased approach is therefore logical. The excerpt below identifies four steps to making Wi-Fi an extension of the mobile network.

Phase of Service Provider Wi-Fi

Source: Heavy Reading

Report Scope and Structure

Wi-Fi Technology Strategies for Mobile Operators is structured as follows:

Section I is an introduction to the report, with complete report key findings.

Section II examines the rise of Wi-Fi in smartphones and provides market context on service provider initiatives, consumer usage patterns and the major operator-specific Wi-Fi technology and standardization initiatives. It also identifies and analyzes the key equipment suppliers.

Section III explores the “Wild West of Wi-Fi” and the relative attractiveness of different types of Wi-Fi access - residential, hotpots, etc. - to mobile operators.

Section IV examines how operators can make Wi-Fi part of their commercial offer and integrate the technology into the network.

Section V covers core network integration options such as I-WLAN and IFOM that will help operators influence and enhance the Wi-Fi user experience.

Wi-Fi Strategies for Mobile Operators is published in PDF format.

Table of Contents




  • 1.1. Key Findings
  • 1.2. Report Scope & Structure


  • 2.1. Half of Smartphone Usage Is Already on Wi-Fi
  • 2.2. Wi-Fi Usage by Device Type
  • 2.3. Operator Wi-Fi Is Booming
  • 2.4. Examples of Operator Wi-Fi
  • 2.5. Wi-Fi vs. Licensed Small Cells
  • 2.6. Service Provider Wi-Fi Technology Suppliers
  • 2.7. Key Technologies for Service Provider Wi-Fi


  • 3.1. Types of Wi-Fi &Attractivenessto Mobile Operators
  • 3.2. Public Hotspots
  • 3.3. Wi-Fi Zones
  • 3.4. Residential Wi-Fi
  • 3.5. Other Types ofWi-Fi


  • 4.1. PhasesofGrowth
  • 4.2. Add Public Wi-Fi Access to Mobile Subscription
  • 4.3. Auto Login &AAAlntegration
  • 4.4. Access to 3GPP Packet Services From WLAN
  • 4.5. Seamless Service Across 3GPP & Wi-Fi Access


  • 5.1. Evolved Packet Core
  • 5.2. From l-WLAN to EPC-Based Integration
  • 5.3. IP Flow Mobility






  • Figure 2.1: Wi-Fi/LAN Access vs. Mobile Network Access (Total U.S., May 2011)
  • Figure 2.2: Connections to AT&T Wi-Fi Hotspots by Smartphone Users
  • Figure 2.3: Operators Investing Wi-Fi Network Strategies
  • Figure 2.4: Per-Sector/Carrier Data Rates of Wi-Fi & LTE Picocells
  • Figure 2.5: Service Provider Wi-Fi Vendors
  • Figure 2.6: Cellular Network-Oriented Initiatives for Wi-Fi Integration
  • Figure 2.7: Wi-Fi-Oriented Initiatives for Integration With Cellular


  • Figure 3.1: Types of Wi-Fi Access
  • Figure 3.2: The ‘Fon Model” for Residential Wi-Fi


  • Figure 4.1: Phases of Service Provider Wi-Fi


  • Figure 5.1: User-Driven “Hard” Wi-Fi Offload
  • Figure 5.2: l-WLAN for Core Network Integration
  • Figure 5.3: EPC-Based Core Network Integration
  • Figure 5.4: IP Flow Mobility
  • Figure 5.5: Flow Aggregation in Heterogeneous Access Networks
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