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pierredv : unlicensed   56

3GPP approves work item to bring 5G NR into unlicensed spectrum | FierceWireless Dec 2018
"3GPP agreed at its meeting in Sorrento, Italy, this past week to start a work item dubbed NR-U, which will define how 5G New Radio is introduced in unlicensed spectrum.

"The work item covers five scenarios with functionalities such as Carrier Aggregation (within one eNodeB), dual connectivity (across two eNodeBs), LTE anchor in licensed spectrum, 5G NR anchor in licensed spectrum, uplink only in licensed spectrum, downlink only in unlicensed spectrum as well as standalone operation..."

"Operators report big speed boosts after introducing LAA, a 3GPP Release 13 technology that uses carrier aggregation in the downlink to combine LTE in unlicensed spectrum (5 GHz) with LTE in licensed spectrum."

"Casaccia suggests that the ability to operate 5G NR standalone in unlicensed spectrum could lead to local private 5G networks dedicated for a specific application such as industrial IoT or mobile broadband for enterprises, or it could provide an avenue for service providers, like cable operators and ISPs or neutral host service providers in public venues such as sports stadiums and malls."
FierceWireless  5G  unlicensed  3GPP 
december 2018 by pierredv
FCC to create new 6 GHz unlicensed band | PolicyTracker, Oct 2018
"The Federal Communications Commission has agreed to publish a Notice of Proposed Rulemaking that would allow unlicensed use of the 6 GHz band. The band, which is also being studied in Europe, is widely seen as the world’s next major band for unlicensed applications.

"Under the terms of the proposals, unlicensed access to the 850 MHz of spectrum would be controlled by a lightweight database. This approach, often described as automated frequency control (AFC), is designed to prevent interference to incumbent fixed links. "

"Satellite earth stations use the band for uplinks throughout the band, but particularly within the U-NII-5 frequencies. The FCC does not think these applications should be taken into account by AFC databases because the receivers (satellites) are located so far away from Earth."

"Cable lobbyists the NCTA, as well as Commissioners Michael O’Rielly and Jessica Rosenworcel, have recently promoted the possibility of a Further NPRM (FNPRM) for the 5875–5925 MHz range. ... That band has been reserved in the US for Dedicated Short-Range Communications (DSRC), ... FCC chair Ajit Pai would not commit to an FNPRM, but ... This did not impress Commissioner Rosenworcel."
PolicyTracker  6GHz  unlicensed  FCC  satellite  DSRC 
october 2018 by pierredv
Unlicensed Spectrum Provisions in 2018 Omnibus Spending Bill | SpectrumTalk - The MSS Blog, March 2018
"On March 23 POTUS signed into law the 2018 Omnibus Spending Bill. As a public service, we are providing to the telecom community the sections that deals with telecom issues so readers don't have to plow through all 2000 pages. The index of the telecom provisions is given above.

Since CTIA and NAB will quickly tell their members about the sections that direction affect them - while they claim credit for these provisions, we will not address such issues here. Rather we will focus here on the unlicensed spectrum issues in the new law."
spectrum  legislation  Mike-Marcus  unlicensed 
june 2018 by pierredv
What are the global prospects for unlicensed use of the 6 GHz band? | PolicyTracker - May 2018
"The 6 GHz band is already allocated in the Radio Regulations to mobile on a co-primary basis alongside the fixed and fixed satellite (uplink) services. Advocates of sharing in the band commissioned RKF Engineering to study the impact that unlicensed use could have on the band’s incumbents within the continental US."

"These findings were challenged by the Fixed Wireless Communications Coalition, which was supported by the National Spectrum Management Association. Satellite operators Intelsat and SES also challenged the rigour of the study, in comments that were subsequently described as “tinkering at the margins” by the unlicensed spectrum advocates."

"In response to the EC mandate, a CEPT sub-group (ECC SE45) will complete a similar baseline study by the end of 2018."
PolicyTracker  6GHz  satellite  unlicensed  ECC 
may 2018 by pierredv
On the impact of inter-UAV communications interference in the 2.4 GHz band - IEEE Conference Publication
Abstract:
As the use of Unmanned Aerial Vehicles (UAVs) increases, protocols to avoid collisions between them, and to achieve collaboration through swarm-based configurations, are receiving more attention by the research community. In this work we study the performance of communication links between drones in the 2.4 GHz wireless band, where a high interference from the radio control unit is expected. We performed a large set of experimental tests, and the results demonstrate that the use of the WiFi 2.4 GHz band for any application is not compatible with overwhelming majority of remote controls working in the same frequency band. Moreover, the distance between drones, the data packet size, and the engines speed are also factors affecting the communications link quality.
IEEE  UAS  UAV  drones  interference  unlicensed  2.4GHz 
april 2018 by pierredv
Technology agnostic regulatory criteria for licence-exempt spectrum | Digital Policy, Regulation and Governance | Vol 20, No 1
"This paper builds on and expands two other papers on regulatory criteria for license-exempt spectrum which define metrics for spectrum loading and spectrum sharing efficiency. Here, we add metrics for Block Edge Masks and for medium access adaptivity. This gives a complete toolset for the management of radio spectrum."

Johannes Kruys, Peter Anker, (2018) "Technology agnostic regulatory criteria for licence-exempt spectrum", Digital Policy, Regulation and Governance, Vol. 20 Issue: 1, pp.1-13, https://doi.org/10.1108/DPRG-05-2017-0022
Jan-Kruys  Peter-Anker  unlicensed  regulation  spectrum-sharing  spectrum-efficiency  metrics 
march 2018 by pierredv
ViaSat, Intelsat, OneWeb cite access to spectrum as big concern | FierceWireless Oct 2017
"Asked about the major factors affecting investment in next-generation satellite technology, several leading satellite players said access to spectrum is the No. 1 issue. Executives from ViaSat, Intelsat and OneWeb testified Wednesday during a U.S. Senate Committee on Commerce, Science and Transportation hearing"

"Another related area: unlicensed spectrum. The business model changes dramatically when unlicensed spectrum is made available. In Africa, ViaSat needs to go through cellular operators to provide service, but the cell equipment costs thousands of dollars. In Mexico, it’s able to go directly with its own satellites and put in a Wi-Fi hotspot for $1,000, so seeing regulations to support those kinds of models would be very helpful, Dankberg said."

"As more satellites are launched, the potential for collisions rises, and OneWeb’s Wyler stressed that a more formal process needs to be created to prevent catastrophe in space."
FierceWireless  ViaSat  Intelsat  OneWeb  SpaceX  satellite  unlicensed  Wi-Fi  space-debris 
november 2017 by pierredv
Industry Voices—Schoolar: Here comes unlicensed LTE … finally | FierceWireless, Aug 2017
T-Mobile launched commercial LTE-U networks across six cities in February. Furthermore, in June T-Mobile trialed LAA achieving 741 Mbps downlink, and plans to deploy it this year. Also in June, AT&T reported hitting 750 Mbps in its LTE-LAA trial, with its own plans for commercial launch by end of 2017. In the month of August, Verizon announced it is in the process of rolling out a commercial LTE-LAA network. The company also reported reaching 953 Mbps downlink speed in a recent trial. Outside of the U.S. (but in June as well), MTS of Russia has been trialing LTE-LAA. For these, and other operators, LTE using unlicensed spectrum helps get them to 1 Gbps LTE.
FierceWireless  LTE-U  unlicensed  5GHz  opinion  Verizon  T-Mobile  AT&T 
august 2017 by pierredv
UK regulator considering licence-exempt access at 26 GHz — PolicyTracker, Jul 2017
"Ofcom also supports truncating the 66-76 GHz band to focus on 66-71 GHz for international 5G study and setting the same technical conditions for the three bands falling within 37-43.5 GHz. The UK regulator said that where it is possible to demonstrate that uncoordinated small cells can be deployed without affecting quality of service, it will consider allowing licence exempt operation in the 26 GHz band and supports licence exempt in the 37-43.5 GHz and 66-71 GHz range."
PolicyTracker  Ofcom  5G  26GHz  unlicensed  mmWave 
august 2017 by pierredv
Fon expands its Wi-Fi sharing thanks to telcos | FierceWireless
"The company now has 20 million hotspots as part of its shared system, thanks in part to partnerships it struck with telcos, mainly in Europe and Asia."

"Last November, Fon announced a deal with Microsoft whereby customers can purchase Wi-Fi passes via the Windows Store, simplifying the process for those users"

"One trend Puregger sees is Wi-Fi getting more to do within the home. With virtual assistants like Amazon’s Alexa and Google’s Home, Wi-Fi increasingly is key to the connected home"
Fon  unlicensed  Wi-Fi  hotspots  trends  Microsoft 
january 2017 by pierredv
5G will require full convergence between licensed, unlicensed tech: report | FierceWireless - Nov 2016
A new report published by the Wireless Broadband Alliance (WBA), in partnership with Maravedis-Rethink, makes no mistake about it: 5G will require unlicensed technologies working in conjunction with licensed networks to enable the kinds of services that are envisioned.
FierceWireless  licensed  unlicensed  5G 
november 2016 by pierredv
[pdf] ETSI EN 301 893 V1.8.1 (2015-03)
Broadband Radio Access Networks (BRAN);
5 GHz high performance RLAN;
Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive
RLAN  Wi-Fi  LBT  unlicensed  EC  R&TTE 
october 2016 by pierredv
Will 5G need a new spectrum licensing approach? — PolicyTracker - Sep 2016
"The 5G discussion seems to be focused on having a network architecture based on small cells which probably uses higher frequencies than are used for cellular today, said SCF Associates senior consultant Robert Horvitz. That seems to put many base stations in the same functional category as short range devices (SRDs), he added. Those SRDs are mostly unlicensed, so why shouldn't 5G small cells be as well?"
PolicyTracker  5G  spectrum  licensing  SRD  licensed  unlicensed 
september 2016 by pierredv
Socio-Technical considerations for Spectrum Access System (SAS) design - D-Scholarship@Pitt
Abstract

Spectrum Access Systems (SAS) are emerging as a principal mechanism for managing the sharing of radio spectrum. The design of the SAS depends on the specification of spectrum property rights and the governance system by which those rights are enforced. Current perspectives on SAS design have been too limited, focusing narrowly on the technical components without adequate consideration of socio-technical factors that will impact the likely success of any SAS design.

In this paper, we apply the social science literature on the
management of common pool resources (CPR) to the design challenge for the SAS. Heretofore, too much of the discussion has focused on an overly simplistic characterization of the spectrum rights design space as a dichotomous choice between licensed v. unlicensed, markets v. government, and exclusive v. open. The CPR framework forces consideration of a wider class of design options, positioning the specifications of spectrum property rights more appropriately along a multi-dimensional continuum of rights bundles. The CPR framework highlights the importance of considering formal and informal, multi-layered institutional and market-based interactions among SAS stakeholders when designing a resource management system. We will explain how this leads one to view the SAS as a polycentric governance system (using the terminology in the CPR literature). By examining the economic and social context of spectrum sharing, we assert that these emerging systems must be sufficiently flexible to adapt to various forms of resource governance, which refers to the process by which rights are distributed among stakeholders, how those rights are enforced, and how the resource is managed. We illustrate how the insights from the CPR literature might be implemented in a prototype SAS architecture.
Martin-Weiss  unlicensed  commons  Ostrom  papers 
may 2016 by pierredv
Improving spectrum access for consumers in the 5 GHz band | Ofcom May 2016
Consultation published 13|05|2016
"This document sets out proposals for increasing the amount of 5 GHz radio spectrum available for Wi-Fi and other related wireless technologies. It also invites the views of stakeholders on how our wider Wi-Fi strategy should be developed to meet consumer demand. "
"we propose to open up a further 125 MHz of 5 GHz spectrum at 5725-5850 MHz"
Ofcom  unlicensed  5GHz 
may 2016 by pierredv
Feasibility Study on Licensed-Assisted Access to Unlicensed Spectrum - 3GPP specification: 36.889
From Andra Voicu, Dec 2015: 3GPP TR 36.889 V13.0.0 (Section 8.3.3 for adjacent channel interference)
3GPP  LAA  LTE  unlicensed 
december 2015 by pierredv
Globalstar gets positive vibe from Public Knowledge's letter to FCC - FierceWirelessTech
"Globalstar is hopeful after the public interest group Public Knowledge filed a letter with the FCC last week urging the commission use the Globalstar proceeding as an opportunity to clearly explain the relationship between licensed and unlicensed spectrum. The letter from Public Knowledge on Globalstar's proposal to use the 2473-2495 MHz band for terrestrial low power services (TLPS) also suggested the commission to use it as a chance to reframe the commission's public interest analysis "to stress the importance of unlicensed as equal to, not subordinate to, licensed spectrum."" "Feld also in recent weeks has called for the commission to address the LTE-U controversy by issuing a declaratory ruling that Section 333 applies not only to deliberate jamming, but that the commission should interpret the word "willingly" as meaning deploying technology that one knows will create unacceptable levels of interference. He notes that other blogs, including those by the Electronic Frontier "
FierceWireless  Globalstar  PublicKnowledge  Harold-Feld  LTE-U  FCC  unlicensed 
december 2015 by pierredv
Launch press release - Evolve
"New Coalition Launches to Enhance the Consumer Wireless Experience & Encourage Mobile Innovation" "EVOLVE will promote the consumer benefits of unlicensed spectrum and new technologies for unlicensed spectrum like LTE-Unlicensed (LTE-U) and Licensed Assisted Access (LAA)." "The founding members include Competitive Carriers Association, CTIA – The Wireless Association, Alcatel-Lucent, AT&T, Qualcomm Incorporated, T-Mobile, and Verizon"
Evolve  LTE-U  unlicensed  Verizon  CTIA  Alcatel-Lucent  Qualcomm  T-Mobile  AT&T 
september 2015 by pierredv
Licence Exemption of Wireless Telegraphy Devices: Candidates for 2015 | Ofcom
Today’s proposals follow regular Ofcom reviews and are intended to reflect technical developments. In particular, the consultation proposes some minor changes to the existing exemption criteria for the following devices: Personal Mobile Radio (PMR) 446 - liberalising the use of this band (446.0 to 446.2 MHz) by removing analogue and digital demarcations from the frequency bands; Railway Level Crossing Radar - replacing the current ‘exclusion zones’ surrounding Radio Astronomy sites with ‘coordination zones’; and Digital Enhanced Cordless Telecommunications (DECT) equipment - reclassifying the technical requirements, currently classed as Cordless Telephony, to Short Range Devices.
Ofcom  spectrum-sharing  unlicensed 
august 2015 by pierredv
RSPG says light licensing could be a solution for 5G backhaul - PolicyTracker Jul 2015
"A new report by the Radio Spectrum Policy Group (RSPG), the inter-governmental group that advises the European Commission on spectrum matters, has identified light licensing as an “attractive” way of addressing growing demand for spectrum through wireless backhaul." Wireless backhaul users looking at 60 GHz and 70/80 GHz - but 5G also eyeing it. - "In these bands, the report argues that “light licensing or technology-neutral block licensing seem to be attractive alternatives to cope with the very high number of short links, compared to other approaches such as individual licensing, as they provide flexibility”. Licence-exemption is also identified as a “tempting option” but the report warns that this may result in unpredictable interference."
PolicyTracker  light-licensing  unlicensed  RSPG  5G  backhaul  wireless-backhaul  60GHz  70GHz  mmWave 
july 2015 by pierredv
Is there enough licence-exempt spectrum available in Europe? - PolicyTracker Mar 2015
"The success of Wi-Fi and the expected growth of the Internet of Things has led to renewed interest in licence-exempt spectrum, but consultants hired by the European Commission have suggested there is already enough of this spectrum available. Brussels asked consultants Real Wireless, Rethink Technology Research and Tech4i2 to provide an overview ..." - "The work, which complements recent inventory work on licensed spectrum, is set to argue that there is already enough harmonised licence-exempt spectrum in Europe, but that it is not necessarily used very efficiently." - "To counter the perceived lack of licence-exempt spectrum, the European Commission and CEPT have been looking at allocating more licence-exempt spectrum and using a “soft harmonisation” approach to use the existing bands more efficiently. This works by setting non-mandatory standards ..."
PolicyTracker  EC  unlicensed  harmonization 
march 2015 by pierredv
IEEE Forms Study Group to Address Coexistence in Unlicensed Frequency Bands (CUB) | Business Wire Jan 2015
"IEEE, the world’s largest professional organization dedicated to advancing technology for humanity, today announced the formation of the IEEE 802.19™ Coexistence in Unlicensed frequency Bands (CUB) Study Group to explore radio technology independent methods for enabling wireless networks operating in unlicensed frequency bands to coexist. IEEE 802® has been developing wireless networking standards for operation in unlicensed bands for many years, and will leverage these years of experience within the CUB study group. The IEEE 802.19 CUB Study Group was established to address the growing demand for mitigating interference over unlicensed frequency bands stems from various types of wireless systems including IEEE 802 and non IEEE 802 systems"
Wi-Fi  802  unlicensed  coexistence  IEEE  BusinessWire 
january 2015 by pierredv
3GPP Conference: LTE in unlicensed spectrum, June 13, 2014, Sophia Antipolis
includes links to slides "Initial focus will likely be on Licensed-Assisted Carrier Aggregation operation to aggregate a primary cell, using licensed spectrum, to deliver critical information and guaranteed Quality of Service, and a co-located secondary cell, using unlicensed spectrum, to opportunistically boost datarate." "Fair coexistence between LTE and other technologies such as WiFi as well as between LTE operators is seen necessary." Dino Flore noted; “Initial results suggest that, when augmented with the appropriate coexistence mechanisms to operate in unlicensed spectrum, e.g. Listen-Before-Talk, LTE can effectively coexist with Wifi and outperform it in terms of spectral efficiency”
3GPP  LTE  unlicensed  conference 
july 2014 by pierredv
FCC opens up 100 MHz of spectrum in 5 GHz band for unlicensed Wi-Fi - FierceWireless
"The FCC voted 5-0 to adopt a First Report and Order that makes 100 MHz of the 5 GHz UNII-1 band "more useful for consumers and businesses, and reduce the potential for harmful interference to certain incumbent operations." At issue is the 5150-5250 MHz portion of the Unlicensed National Information Infrastructure (UNII) band, whose unlicensed use was restricted to lower wattage and indoor operations. The order eliminates a rule that had prohibited outdoor operations in the band and also increases allowable power levels in the band. However, the FCC staff said that the order also protects incumbent users, most notably mobile satellite service, by placing technical limits on the amount of energy that can be directed up toward satellites. As another measure to protect incumbent users, the FCC is going to require companies to notify the commission if they are deploying more than 1,000 access points in the UNII-1 band.i"
FCC  5GHz  U-NII  FierceWireless  unlicensed  spectrum-efficiency 
march 2014 by pierredv
Alcatel-Lucent exec: 'We can't wait for the master blueprint' - FierceWirelessTech Feb 2014
"He described three primary approaches to building capacity: Adding spectrum and/or base stations; adding spectral efficiency; and adding spatial efficiency. " "Schabel observed that Wi-Fi spectrum is "really important and useful" as a complement to licensed spectrum. He said Alcatel-Lucent "absolutely supports" Qualcomm's (NASDAQ:QCOM) effort to see LTE enabled for use on unlicensed bands such as Wi-Fi spectrum." Schabel: "If you go in and start operating LTE over a slice of the spectrum, Wi-Fi can adapt and it will adapt," he added. "You're compressing the Wi-Fi a little bit in certain cases, but you're also using the other portions of it in a much more efficient way, so you get a higher result."
Wi-Fi  LTE  Alcatel-Lucent  unlicensed 
march 2014 by pierredv
Qualcomm's unlicensed LTE could crush carrier Wi-Fi's momentum - FierceWirelessTech
"Qualcomm's (NASDAQ:QCOM) recently announced push to see LTE services deployed on unlicensed spectrum raises lots of questions, chief of which is how this might impact the carrier Wi-Fi market."
Qualcomm  LTE  Wi-Fi  unlicensed  FierceWireless 
february 2014 by pierredv
Ofcom partly rescinds 70/80 GHz self-licensing regime — PolicyTracker: the spectrum management newsletter
Excerpts: Ofcom has changed its management approach to the 71-76 GHz and 81-86 GHz bands to partly rescind its self-management principle The 2 x 4.75 GHz block, currently used in the UK for fixed services, is subject to a self-coordination regime but Ofcom has decided to switch to a mixed management regime. The regulator says it plans to split the band into two blocks of 2 GHz of co-ordinated spectrum and another two blocks of 2.5 GHz that are self-coordinated. Ofcom told PolicyTracker that the proposals were "designed to address a segment of the market that wants to deploy carrier grade quality / very high availability links in this band (e.g. for 4G macrocell backhaul above the urban clutter line) but considers the risks of the self-coordinated approach as being too high for them to do this".
PolicyTracker  70GHz  Ofcom  licensing  unlicensed 
january 2014 by pierredv
Neul disconnects TVWS from Internet of Things strategy — PolicyTracker: the spectrum management newsletter
In a big change from its previous strategy, Neul has also concluded that licensed sub-gigahertz spectrum could be a better option for its Weightless machine communications technology than TVWS
Neul  TVWS  whitespaces  unlicensed  licensed  IOT  PolicyTracker 
december 2013 by pierredv
Qualcomm wants LTE deployed on unlicensed spectrum - FierceWireless
Quotes: Qualcomm (NASDAQ:QCOM) is interested in exploring the possibility of deploying LTE services on unlicensed spectrum, according to CEO Paul Jacobs. According to Electronics Weekly, Jacobs explained the reasons behind the move: "We paid for that very sophisticated LTE receiver in the devices, it's a better receiver than the receiver that's been used for Wi-Fi. That means you get better capacity and better coverage out of an LTE unlicensed deployment." It's unclear which bands could be used for unlicensed LTE services. One that has been bandied about is the 3.5 GHz band, which is being eyed for small cells in the United States.
Qualcomm  LTE  unlicensed  3.5GHz 
december 2013 by pierredv
New study advocates expansion of rules-based spectrum access — PolicyTracker: the spectrum management newsletter
"Regulators are pursuing 'suboptimal' policies based on out of date economic theories, claims a new Microsoft-funded study of spectrum regulation. It argues that regulators should move from a licence-based approach to spectrum regulation to an unlicensed, rules-based approach. The study argues that issuing licences is an inefficient use of spectrum. “The spectrum shortage is largely an artefact of the system of assigning licensees exclusive rights to particular frequencies," it says. Beveridge supported the notion that rules-based regulation creates certainty. He said that the database could not only control access to the spectrum, but also learn about the operating environment. This would mean that the parameters for users to access spectrum could be dynamically upgraded." But how do rules get changed?
unlicensed  Richard  Thanki  DSA  Microsoft  PolicyTracker  Jim  Beveridge 
october 2013 by pierredv
Is There An Attractive Business Model For Shared Spectrum? - Seeking Alpha
"Service providers have trouble justifying building out infrastructure on shared spectrum. . . One solution to jump-staring a viable shared spectrum business model would be for a third party to build out infrastructure on shared spectrum and lease it to multiple service providers. . . It appears that shared spectrum use will, at least for now, continue to be largely limited to short-range private networks ... Another possibility is that shared spectrum will simply be used by traditional wireless operators ... No matter how the shared spectrum industry evolves, if it is successful, the real winners are likely to be the equipment providers."
unlicensed  sharing  Armand  Musey  shared  spectrum  ex  Seeking  Alpha 
july 2013 by pierredv
UK weather forecaster worries about interference from SRDs — PolicyTracker: the spectrum management newsletter
"The UK's official weather forecaster, the Met Office, has warned that plans to free up spectrum for short-range devices such as smart meters could cause serious interference problems with some of its forecasting equipment. The regulator is proposing that all the spectrum be released, on a licence-exempt basis, for short-range devices (SRDs) and radio-frequency identification (RFID). The only fly in the ointment is the Met Office, which operates two Doppler Wind Profiling Radars (WPRs) in the 915-917 MHz band being released by the MoD. Because the Met Office is not convinced either Ofcom’s or CEPT’s proposals will provide protection for its existing WPRs, let alone for any new ones, it is rejecting the licence-exempt model and requesting “some form of licensing regime”."
unlicensed  weather  radar  interference  radar  PolicyTracker  Ofcom  SRD 
may 2013 by pierredv
The Progeny Waiver: Will the FCC Wipe Out Smart Grid? Save Thousands of Lives? Both? This Season on Spectrum Wars! - Wetmachine, March 2013
Progeny story Multilateration Location and Monitoring Service” (M-LMS) and a non-multilateration version, LMS "FCC selected the 902-928 MHz band for the new M-LMS and LMS service . . . The FCC finally auctioned off a bunch of the LMS and M-LMS licenses in 1999. The LMS service ultimately morphed into those automatic toll collection thingies like EZ-Pass. But M-LMS went nowhere." "Under the rules adopted by the FCC, an M-LMS licensee would need to show that operation of its system would not cause “unacceptable levels of interference” to unlicensed use in the band before commencing operation. Of course, the FCC did not define what “unacceptable levels of interference” actually meant, how it compared to the usual (and equally unclear) “protection from harmful interference” usually given to licensed services, or how it intended to certify that future M-LMS licensees had met their burden."
unlicensed  Harold-Feld  harmful  interference  spectrum  900MHz  Progeny  interference  Wetmachine 
march 2013 by pierredv
Public Goods, Common Resources, and Club Goods
This page in the middle of a series explaining public, private, commons, etc. Argues that good where congestion moves from public good to a commons are "congestible goods". May be relevant to transition from unlicensed to licensed
unlicensed  commons  economics  x:about.com 
january 2013 by pierredv
Interference w/ GPS - RC Groups Jun 2008
"I'm no RF expert, but we have seen problems with both our 900 Mhz and 2.4 Ghz transmitters interfering with GPS reception"
unlicensed  Wi-Fi  2.4GHz  GPS  interference 
april 2012 by pierredv
BAND-TO-BAND COMBAT - April 2002
Anticipating the proliferation of license-exempt RF devices operating in the 2.4 GHz band, Sirius and XM are urging the FCC to reduce the out-of-band emissions these unlicensed devices generate by 33%.
unlicensed  SDARS  satellite  interference  Wi-Fi 
april 2012 by pierredv
Solving the coexistence of WiMAX, Bluetooth and WiFi in converged handsets - June 2007
"Given the analysis of the scenario in the previous section, it is clear that nothing can be done to eliminate, or even mitigate the interference in the radio or Physical Layer (PHY) since it is inherent to the system. Therefore, the solution must be provided via a higher layer, i.e. the Media Access Control (MAC) layer. In the MAC layer, it is possible to perform synchronization between the different protocols, and ensure that bandwidth over the shared spectrum is allocated in a time multiplexed, non-concurrent, yet fair basis. Such a solution would eliminate any potential conflict and still maintain inherent link performance attributes."
wireless  cellular  unlicensed  WiMAX  Bluetooth  Wi-Fi  interference  x:eetimes 
april 2012 by pierredv
FCC Seeks Comment on Interference into Unlicensed Devices : CommLawBlog Mitch Lazarus Feb 2012
" The FCC has asked for comment on whether the licensed Location and Monitoring Service (LMS) at 902-928 MHz will cause interference to unlicensed devices in that band"
unlicensed  LMS  Part15  900MHz  interference  CommLawBlog 
february 2012 by pierredv
New Yochai Benkler Working Paper - Open Wireless vs. Licensed Spectrum: Evidence from Market Adoption | Berkman Center Nov 2011
Abstract "The paper reviews evidence from eight wireless markets: mobile broadband; wireless healthcare; smart grid communications; inventory management; access control; mobile payments; fleet management; and secondary markets in spectrum. Yochai Benkler finds that markets are adopting unlicensed wireless strategies in mission-critical applications, in many cases more so than they are building on licensed strategies. . . . Market evidence suggests that unlicensed wireless strategies are becoming the primary approach for implementing wireless communications technology. As Congress and the FCC seek ways to transition away from older technologies, the paper recommends that they should adopt policies explicitly designed to assure that unlicensed wireless innovation has at least as much room to grow as licensed wireless approaches."
unlicensed  Benkler  Yochai  Benkler  wireless  commerce 
november 2011 by pierredv
Unlicensed PCS : CommLawBlog May 2010
"Unlike most unlicensed bands, 1920-1930 MHz has a “listen before talk” requirement. A device must monitor a channel before using it, and can transmit when signal levels are below a certain threshold. If the unit has monitored at least 40 channels and found signals to be too high on all of them, it can transmit on the quietest, so long as the activity there is below a second, higher threshold. The FCC proposes to change these rules."
CommLawBlog  FCC  UPCS  unlicensed 
august 2011 by pierredv

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