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Re: [STDS-802-16] Wireless Broadband Task Force of U.S. FCC Reque sts Comments



Remi,
 
Thanks for clarifying your views.
 
I would agree with you, if 802.16 would be the only equipment using the spectrum. The reality is that the ISM rules allow the spectrum mess, even if some of equipments are 802.11 compliant, other 802.16 compliant and other proprietary.
 
By allocating the LE spectrum, such that a sharing rule will be in place, the problem still remains in equipment garden. For the user will be transparent, and all the beauty is un-touched, "the user saves the coordination effort and the license fees (and delays)", I fully agree with you.
 
Probably you did not understand myself initially. Hope this clarifies.
 
 
Regards,
 
Marianna
 
-----Original Message-----
From: Chayer, Remi [mailto:rchayer@HARRIS.COM]
Sent: Wednesday, May 12, 2004 6:26 PM
To: STDS-802-16@LISTSERV.IEEE.ORG
Subject: Re: [STDS-802-16] Wireless Broadband Task Force of U.S. FCC Reque sts Comments

Marianna,
 
I always take the "technical and marketing evidence" into account.  We should distinguish between spectrum sharing rules and mandatory equipment requirements.  In the case of license-exempt, I prefer to see equipment requirements (such as CCA and DFS) instead of spectrum sharing rules.  The beauty of license-exempt equipment is that the user saves the coordination effort and the license fees (and delays).  These might disappear if we start ruling the usage and not only the equipment parameters.
 
Regards,
 
Remi
-----Original Message-----
From: Marianna Goldhammer [mailto:marianna.goldhammer@alvarion.com]
Sent: Wednesday, May 12, 2004 11:07 AM
To: Chayer, Remi; STDS-802-16@LISTSERV.IEEE.ORG
Subject: RE: [STDS-802-16] Wireless Broadband Task Force of U.S. FCC Reque sts Comments

Remi,
 
You probably think that the spectrum will be used only by operators ?!.
 
What will hapen, is that everybody will be able to buy a $300 Access Point and few $150 SS,  just to have free direct link with his neighbours and exchange films. 
 
This is called ad-hoc deployment, 802.11 like, nobody can control it.  The nice thing regarding 802.11 is that the standard (not a co-existence practice) includes a mechanism for authomatically sharing the spectrum, called CCA (clear channel assesment) or "listen before send".  With this mechanism, a number of systems are even able to use the same frequency, by sharing the channel in time. However,  this mechanism is nor suitable for 802.16.
 
802.16 still lacks such a mechanism, to allow a number of systems to share the spectrum: the paradox is that its own succeess may be a high danger for its use by WISP !.
 
Regarding the Licensing, this will give not only really QoS (instead of "some QoS"), but also rights on spectrum property. The cell sizes will be higher (power allowance), more suitable for big opperators.
 
Please take the technical and marketing evidence into account.
 
Kind Regards,
 
Marianna
 
-----Original Message-----
From: Chayer, Remi [mailto:rchayer@HARRIS.COM]
Sent: Wednesday, May 12, 2004 5:24 PM
To: STDS-802-16@LISTSERV.IEEE.ORG
Subject: Re: [STDS-802-16] Wireless Broadband Task Force of U.S. FCC Reque sts Comments

I  do not like the idea of writing "sharing rules" for license-exempt bands.  The main advantage for using licensed bands as opposed to licensed-exempt bands is the possibility of giving some assurance of "controlled" interference; this is the main reason why the operator is ready to pay for the spectrum he is using.  I doubt we should ask the FCC or any Regulator to start "ruling" the license-exempt bands.  In the case of the license-exempt bands, I would much prefer to use the word "spectrum usage etiquette" which includes the idea of voluntary "coordination".  It would still have a positive impact on QoS without the disadvantage of ruling the use.
 
I agree with the bullet answers shown in Barry's e-mail.  I just would like to submit the following comments for consideration:
 
2.    Replace "Spectrum available either now or in the future, whether on a licensed or unlicensed basis should be in harmony with allocations in other parts of the globe." by "Spectrum available either now or in the future, whether on a licensed or unlicensed basis should be harmonized worldwide.  Unique allocations normally results in higher costs to the users and lead to lengthy international sharing discussions."
 
4.    Replace "The application of auction procedures have lead to examples around the world where legal considerations and obligations have..." by "The application of auction procedures have lead to examples around the world where legal or revenue considerations and obligations have..."
 
12.    I would add the following bullet:
        "- In addition to the cost of the backhaul network, the cost of the connection to Internet at high speed (T1, T3, etc.) is an important cost contributor that could make the business case difficult to justify.  Subsidizing the interconnection might help, at least for the first year or two, when the customer base is still small."
 
Regards,
 
Remi
 
-----Original Message-----
From: owner-stds-802-16@listserv.ieee.org [mailto:owner-stds-802-16@listserv.ieee.org]On Behalf Of Marianna Goldhammer
Sent: Wednesday, May 12, 2004 5:30 AM
To: STDS-802-16@listserv.ieee.org
Subject: Re: [STDS-802-16] Wireless Broadband Task Force of U.S. FCC Reque sts Comments

Barry,
 
I would ask FCC that the coming License Exempt allocations (<1GHz, 3.5GHz) will define a spectrum sharing rule, between systems operating in the band, to be drafted by IEEE 802.16. Only in this way the rural ISPs and eventually the Service Providers will be able to guarantee some QoS to their customers, avoiding the potential spectrum mess, and encourage them to use the spectrum for competitive BWA. 802.16 is the suitable standardization body, as its target is to provide standardized equipment for the FCC intended market.
 
The reason for this: I think that for FCC (and other regulators) is easier to allocate LE spectrum, possible using the UK mode in 5.8GHz, due to the fact that most bands are shared with other Services (TV,Satellites,Radars, etc.). They cannot guarantee than in a given place will not be installed a Satellite transmitter! However, there are only few of them in any country.
 
We should collaborate with regulators to allocate bands in such a way, that some QoS may be guaranteed. Just think what will happen, when  a user will have a 802.16 connection, and in the same home will be a Freq. hopping phone and a 802.11 WLAN, transmitting exactly when your 802.16 device is in receive state! The "listen before send" will protect your transmitter, but who cares! And your 802.16 device will transmit when scheduled, not important what happens to the WLAN, that may transmit in-home video!
 
Please find a suitable place in our response.
 
Regards,
 
Marianna
 
-----Original Message-----
From: Barry Lewis [mailto:blewis@REDLINECOMMUNICATIONS.COM]
Sent: Tuesday, May 11, 2004 7:20 PM
To: STDS-802-16@listserv.ieee.org
Subject: [STDS-802-16] Wireless Broadband Task Force of U.S. FCC Requests Comments

Dear colleagues,

Here are some first draft comments (in red) against the FCC public consultation document. These are in the form of bullet points that we will request 802.18 to take into account. The finalised comments will be e-mailed to Carl Stevenson and recorded in an 802.16 WG document. Please send any further points / refinements for finalization tomorrow. Indications of support would also be useful.

 

 

 

1.      To what extent are both licensed and unlicensed wireless broadband networks providing an alternative facilities-based platform to other broadband services, including cable and DSL?  To what extent have wireless broadband service providers increased broadband access and competition in rural and underserved areas?  If so, are regulatory changes needed to promote or advance these trends?

WG 802.16 Draft Response points:

  • The fixed systems compliant with the 802.16 standard are ideally suited and targeted to provide a viable alternative to other "wired" broadband delivery methods.
  • More widespread adoption of wireless access technology has been hampered by a lack of affordable backhaul particularly in rural areas.
  • Regulatory developments should consider and address the backhaul issue as well as the "last mile" access.

 

2.      Does the Commission currently provide sufficient spectrum suitable for wireless broadband networks?  Is the relative availability of spectrum for licensed services or unlicensed devices appropriate?  If not, how so?

WG 802.16 Response points:

  • Spectrum available either now or in the future, whether on a licensed or unlicensed basis should be in harmony with allocations in other parts of the globe.
  • Recent developments have greatly increased the availability of unlicensed spectrum but in isolation this may not be sufficient. Licence exempt spectrum minimizes the entry barriers for potential operators but to some extent this is offset by the lack of protection from interference. Therefore the availability of licence exempt spectrum should be balanced with licensed spectrum providing a migratory path for greater protection through "exclusive" assignments. This might be specifically true for longer range systems like those standardized in 802.16.
  • More spectrum for licensed services would be beneficial. The standardization of systems operating in licensed spectrum is a major element of the 802.16 standard.

 

3.      Do the services offered using unlicensed devices and those using licensed networks complement each other?  If so, how?

WG 802.16 Response points:

 

  • For an operator wanting to provide a complete basket of services then operation under the two licensing conditions may be helpful. Operation within either licence exempt spectrum or licensed spectrum might allow for a variety of service "grades" helping to encourage competitive offerings addressing differing sectors of the market.
  • The 802.16 standard provides for fully scheduled traffic to provide close control over the grade of service. It might be argued that licensed spectrum is more consistent with this feature.

 

4.      There are several different regulatory approaches that determine access to the spectrum for wireless broadband service providers.  Service providers using networks composed of unlicensed devices do not pay for access to the spectrum, but must not cause interference and must share the spectrum with other operators of unlicensed devices, whereas access to other spectrum is obtained through licensing after successful bidding at auction.  In addition, some spectrum has been made available on a first come, first served basis.  Has the method for access to spectrum affected the development of wireless technologies and the provisioning of wireless broadband services?  If so, how?

WG 802.16 Response points:

 

  • The application of auction procedures have lead to examples around the world where legal considerations and obligations have carried greater weight than common sense spectrum management. This can lead to non-optimal or delayed spectrum access for new operators (or new technology) that is difficult to resolve in a timely manner.
  • Alternatively first come, first served procedures can also lead to spectrum locked up in a way that similarly restricts the access.
  • For wireless broadband to be successful, potential operators must have access to spectrum when they need it and in a way that is consistent with a growing network.

 

5.      Wireless broadband offers clear advantages over other broadband alternatives in terms of both portability and mobility.  Do the Commission's rules effectively provide for or account for these capabilities?  Could these rules be more flexible?  If so, how?

WG 802.16 Response points:

 

[Personally I'm less  familiar with the UNII band operation and MMDS in the US than others may be - can someone provide insight for a response here?]

 

 

6.      Are there regulatory incentives that would foster continued investment in and deployment of state-of-the-art technologies?  If so, what are they?  Are the incentives different for licensed services as compared with services offered using unlicensed devices?

WG 802.16 Response points:

 

  • The regulatory framework should provide a perception of ready access to spectrum of the appropriate "quality" for wireless broadband services to support the standardization efforts of 802.16 participants.  
  • The spectrum (and licensing framework) should be seen in the context of an overall spectrum allocation strategy that properly accounts for the potential for future growth in terms of services and user demand development.

 

7.      We seek comment on the extent and nature of the deployment of wireless broadband services.  For example, we are interested in data regarding market penetration rates; the geographic distribution of wireless broadband services; the extent of competition in the areas in which wireless broadband is deployed; and whether licensed services, unlicensed devices, or a combination of both licensed service and unlicensed devices are used; and the types of technologies used in the networks deployed.

WG 802.16 Responses:

 

[Are there any marketing guys who might be in a better position to comment?]

 

 

8.      With the continued development of new technologies and network configurations, including mesh networks and integrated wireless broadband networks and devices that use both licensed and unlicensed spectrum, are there any rules that require review for updating or increased flexibility?

WG 802.16 Response points:

  • Possibility for higher power in unlicensed bands.
  • Is there enough flexibility to provide either access or backhaul services?

 

9.      We also seek comment on the types of applications associated with wireless broadband deployment.

a.       What types of applications are or will be offered over wireless broadband networks?  Are they similar to the applications of the wired Internet (email and web surfing), or are other, more personalized, niche applications being developed?  Do the applications differ between licensed and unlicensed networks?  What is the relationship between network operators and content providers?

b.      What are typically available data rates, and at what pace are they increasing?

c.       Is the traffic associated with wireless broadband more typically symmetric or asymmetric?  Does the relative distribution of these traffic patterns affect the required bandwidth for wireless broadband systems?  If so, how?

d.      What is the distribution of wireless broadband between fixed, mobile, and portable installations?

WG 802.16 Response points:

 

  • 802.16 standardised systems provide operators with the capability to address the flexibility requirements for a range of traffic demands envisaged for many services.

 

 

10.  While we are interested in these deployment data across larger geographic regions and on an aggregate basis, we are also interested in information about wireless broadband deployment in specific communities -- rural or urban, large or small, and in varied geographic regions.  With a view toward using successful deployments as models or examples for other service providers or communities, have there been pilot or full-scale programs that have been particularly innovative or successful in terms of increasing access to broadband through wireless facilities?

WG 802.16 Response points:

 

Does anyone know of any in the US? I could probably find some community network examples in the UK and I  know there are US examples that have been quoted previously in work on this subject.

 

11.  Are there ways in which federal wireless broadband policies could facilitate better available policy options for states and municipalities?  If so, how?

WG 802.16 Response points:

 

Quite frankly I haven't a clue on this one.

 

12.  What barriers (information, infrastructure) to entry remain for WISP entrepreneurs particularly for unlicensed services?  To the extent identified, how can government address these issues?

WG 802.16 Response points:

 

Probably the backhaul issue identified in response to number 1. Are there alternative ways that backhaul services could be supplied or subsidised in the US?

 

 

 

Barry Lewis

Tel: +44 1276 479087

Cell: +44 7947 496588

 

mailto: blewis@redlinecommunications.com

www.redlinecommunications.com

 


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