Segundo net
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This is a concept I came up with in Jan 2014. Rumors of Google doing something similar to this concept started popping up recently, so it seemed like a good time to publish it. Basic concept is to build a secondary cell network that compliments the user's existing (primary) cell network, offering reduced cellular data rates when a user is within the secondary cell network's range. This secondary network would be significantly cheaper to construct as two major costs (backhaul & spectrum) are done more or less for free, by using Google Fiber as the backhaul and TV White Spaces & all unlicensed spectrum( 900MHz, 2.4 GHz, 5GHz) combined with best Cognitive radio practices for the network's spectrum. Select Google Fiber customers would receive reduced Google Fiber rates for hosting the network's Picocells. Additionally, each Google Fiber home would receive proprietary hardware in the form of a Wifi-router to implement the system's Cognitive Radio. This proprietary hardware can be used to do other cool stuff. But without further ado ... here are the slides ... the concept is a pretty cool one, pretty relevant, probably doable, and I expect some derivation of it to happen in real life pretty soon cuz Google has the rep for pushing things forward. Blog post: http://jaksprats.wordpress.com/2014/04/21/segundonet-a-secondary-cell-network-built-cheaply/
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Segundo net
- 1. Segundo Net Secondary Cell Network
- 2. Secondary & Primary Cell Networks • A user’s primary cell network (e.g. AT&T, Verizon) can be complimented by a discount secondary network (SegundoNet) • A SegundoNet device app would periodically scan for the secondary network, and (when reachable) utilize it for voice & data at a much lower price than the primary network • SegundoNet would be built on an existing backhaul via Small Cells (Picocells)
- 3. Repurpose Backhaul & Frequencies • SegundoNet would use Google Fiber as its backhaul, meaning Google Fiber customer density would have to be high in any neighborhood offering SegundoNet • Picocells can be placed on houses w/ a Google Fiber connection to create a low cost cellular network w/ enough range to blanket urban areas • Unlicensed Frequencies when properly coordinated can provide cellular coverage (in some areas)
- 4. Any Neighborhood in 2017
- 5. Houses with Google Fiber & Wifi
- 6. Device has Google Fiber reception
- 7. Out of Wifi reach Switch to 3rd Party LTE
- 8. Select Customers host Picocells Google Fiber used as backhaul
- 9. Picocells have >200m reach
- 10. Device within Picocell reach Device now has Google Fiber reception
- 11. Zoom out to larger neighborhood
- 12. Add 40 picocells
- 13. Extend Coverage to multiple neighborhoods
- 14. Zoom out again
- 15. Cover ENTIRE Urban areas
- 16. Picocell on what spectrum?
- 17. Unlicensed Spectrum can be plentiful • In Austin TV WhiteSpacehas 96MHz free • There is also 2.4 GHz & 5GHz & 900 MHz • Device side software-defined-radios are commonplace, devices can use these spectrums for cellular connections • Google would give Google Fiber customers customized wireless hardware that would communicate with a central service and work as a single coordinated network
- 18. Customized Google Wireless boxes • Google Fiber would provide all customers with Wifi routers that would allow other customers (running the app) to use this customer’s Wifi at a reduced QoS • Wifi signals would be controlled by a Google run central service, following best Cognitive Radio practices, greatly reducing Wifi interference while increasing Wifi range • Houses selected to host Picocells would get reduced Google Fiber rates • All Picocells would communicate to a Google run central service, which would follow best Cognitive radio practices to coordinate the Picocells to avoid interference
- 19. Primary Hardware Cost: Picocells • Spectrum is unlicensed • Backhaul already exists with Google Fiber • Picocells can be placed on the tops of houses • Software development for the system would also be a cost
- 20. Software development costs • SegundoNet Android App development would cost some money • Development of Central Service providing Cognitive Radio software would be a significant cost • In software, getting the app, the customized wireless hardware and the Central Service to all play nicely together would be a big expense
- 21. App & Bandwidth Prices • Android App would scan for Segundo Net and connect to it if the signal strength is strong enough and also if the device is not in a vehicle (Picocell handoffs work poorly w/ high velocity devices) • Prices would be 5-10x cheaper than competition, still enough to cover the costs of picocells and running the central service • No SIM card, just install the App & it runs as a service • SegundoNet compliments the primary network, it does not replace it (e.g. you are in a car or outside of it’s reach [e.g. on a bridge, not near a house])
- 22. Conclusions • A Secondary Cellular Network can be implemented at low cost to the provider (Google) that compliments a user’s primary network • Unlicensed spectrum usage and using an existing backhaul greatly reduce the setup cost for the Secondary Network • Reduced setup cost meanscell data can be offered via SegundoNet at a reduced price • Controlling communication from the device, to the cellular network, to the backhaul would give Google end to end presence
- 23. EXTRA
- 24. Google Hardware in houses • Providing customers with wifi routers and picocells opens up interesting opportunities • Optimizing network traffic would be the primary goal, but using the resources of the wifi routers &picocells as services would be an added value
- 25. Neighborhood w/ Wifi &Picocells
- 26. Each Wifi Router can house a Private Database
- 27. Each Picocell can house a Shared Database
- 28. Network Device Databases • Databases can be put into both wifi routers and picocells (Network Device DBs – NDDB) • Android API calls for lazy uploads or downloads of data/files can be made that will utilize NDDBs when present • Caching data in NDDBs (think Netflix) -> WIN • Offloading downloads to Network devices can be used to lower device battery usage
- 29. Trusted Device for Trusted Apps • Trusted Apps can authenticate themselves to a central Google Server, afterwards they will be authorized to cache data on the NDDB • Cached data will be sandboxed per application and stored in an encrypted form • Devices using trusted apps can use NDDB as a reverse proxy cache and will need to decrypt data device-side • Can be generalized to work for any Hotspot 2.0 (802.11u) device
- 30. Home Automation • A google-box in the home that is guaranteed to be connected to the internet is a great place to house a Home Automation Gateway service • Technologies like Energy Signal Disaggregation can be used in this google-box to profile the energy usage of the appliances in the home