Options for Improving In-Building Mobile Coverage

Cette étude effectuée à l’intention de l’OFCOM recense les différentes questions qui se posent pour les communications mobiles à l’intérieur des immeubles au Royaume-Uni et analyse les solutions possibles. La situation ne semble pas très différente de celle que nous connaissons en France et les solutions décrites pourraient tout aussi bien s’y appliquer.

La table des matières est rappelée ci-après (le rapport complet est disponible ici ainsi que son appendice) :

1. Executive Summary …………………………………………………………………….. 4

1.1 Indoor mobile service levels are of increasing importance to consumers … 4

1.2 Outside-in solutions are hassle free for the consumer but do not work for all 4

1.3 The most appropriate dedicated in-building solution to indoor mobile service issues is complicated by the range of buildings and users to be covered ……. 7

1.4 Common concern areas found by this study and recommendations to Ofcom 9

2. Introduction………………………………………………………………………………. 4

2.1 Indoor not-spots are an increasingly important issue for consumers ………. 4

2.2 Indoor coverage could worsen if not planned for appropriately ……………… 4

2.3 Many solutions to indoor not-spots leads to confusion on the most appropriate solution ……………………………………………………………………………………….. 5

2.4 Ofcom want to understand the range of technical options for addressing indoor not-spots and the merits of each ……………………………………………………………. 6

2.5 Structure of this report ………………………………………………………………………. 7

2.6 Stakeholder engagement as part of this study ……………………………………… 8

3. Indoor service is of increasing importance to consumers but cellular service from macrocells alone falls short …………………………………………………… 11

3.1 Why indoor service matters to consumers …………………………………………. 11

3.2 Current cellular service levels from macrocells and factors impacting in-building service …………………………………………………………………………………………….. 13

3.2.1 The baseline service level from the existing macrocellular network and factors impacting this over time ……………………………………………………………………… 13

3.2.2 Our analysis of likely future indoor coverage trends ……………………………. 15

3.3 The challenges of providing in-building services for operators ……………… 22

3.4 How big is the indoor “not-spots” problem? ………………………………………. 25

3.4.1 Industry sources on size of the in-building coverage problem ………………. 25

3.4.2 Our quantitative analysis of the potential size of the in-building problem 26

3.4.3 There is huge variation in the scale, occupancy and impact of in-building solutions depending on the buildings targeted…………………………………………………. 30

4. How do consumers get the level of indoor wireless service that they want? 32

4.1 What do “indoor users” want today? ………………………………………………… 32

4.2 Outside-in solutions are hassle free for the consumer but do not work for all 35

4.2.1 Outside-in solutions will continue to be a an important means of providing indoor service ………………………………………………………………………………………………. 36

Options for Improving In-Building Mobile Coverage

Issue date: 18 April 2013

Version: 1.2

4.2.2 Outside in solutions do not solve all in-building service issues ……………… 36

4.3 Dedicated in-building solutions must be carefully selected depending on what the consumer needs and building type ……………………………………………………. 37

4.4 Ofcom could help consumers navigate this choice of in-building solutions42

4.5 Common concern areas with in-building solutions for Ofcom to monitor . 42

5. Outside in solutions are significant but not the complete solution …….. 45

5.1 Good in-building coverage levels are delivered by today’s cellular networks and are operators’ preferred method for service delivery …………………………………. 45

5.2 Enhancements in outside in solutions will improve service levels …………. 45

5.2.1 Macrocell enhancements …………………………………………………………………. 46

5.2.2 Outdoor small cells ………………………………………………………………………….. 52

5.3 Outside-in solutions will improve indoor service levels but do not solve all indoor scenarios …………………………………………………………………………………………… 56

6. Dedicated in-building solutions must fit the deployment and consumer needs 58

6.1 The range of dedicated in-building solutions ………………………………………. 58

6.2 Self-provided Wi-Fi ………………………………………………………………………….. 59

6.2.1 Consumer proposition ……………………………………………………………………… 59

6.2.2 Assessment against Ofcom’s criteria ………………………………………………….. 60

6.3 Carrier Wi-Fi ……………………………………………………………………………………. 61

6.3.1 Consumer proposition ……………………………………………………………………… 62

6.3.2 Assessment against Ofcom’s criteria ………………………………………………….. 64

6.4 UMA/GAN ………………………………………………………………………………………. 65

6.4.1 Consumer proposition ……………………………………………………………………… 66

6.4.2 Assessment against Ofcom’s criteria ………………………………………………….. 66

6.5 Repeaters ……………………………………………………………………………………….. 67

6.5.1 Consumer proposition ……………………………………………………………………… 69

6.5.2 Assessment against Ofcom’s criteria ………………………………………………….. 71

6.6 Femtocells ………………………………………………………………………………………. 72

6.6.1 Consumer proposition ……………………………………………………………………… 73

6.6.2 Assessment against Ofcom’s criteria ………………………………………………….. 75

6.7 Picocells …………………………………………………………………………………………. 76

6.7.1 Consumer proposition ……………………………………………………………………… 77

6.7.2 Assessment against Ofcom’s criteria ………………………………………………….. 78

6.8 Distributed antenna systems …………………………………………………………….. 80

6.8.1 Consumer proposition ……………………………………………………………………… 81

6.8.2 Assessment against Ofcom’s criteria ………………………………………………….. 82

6.9 Assessment of dedicated in-building solutions to user and building types 83

7. Potential regulatory and policy implications ………………………………….. 85

Options for Improving In-Building Mobile Coverage

Issue date: 18 April 2013

Version: 1.2

7.1 The consumer needs assistance to navigate the choice of in-building solutions 85

7.2 Spectrum is not a fundamental barrier to in-building technologies being deployed but could help accelerate adoption of some solutions ………………………… 86

7.3 Ofcom could consider providing updates on in-building coverage levels in their market reports ……………………………………………………………………………………… 87

7.4 Ofcom should monitor appropriate openness of solutions to ensure that consumers have a choice of suppliers for their preferred in-building solution ……… 88

7.5 Ofcom could assist in forming best practice implementation guidelines on security in in-building solutions and raising consumer awareness of their role in this89

7.6 Ofcom should analyse the FCC position on repeaters and consider why this does not fit the UK market …………………………………………………………………………….. 90

References …………………………………………………………………………………………… 91

 

 

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