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Old 11-10-2006, 02:14 PM   #1
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Default WCS: Use it or Lose it

Source: RCR Wireless and Orbitcast

The WCS Coalition, a group including Sprint Nextel, BellSouth, NextWave Broadband, AT&T and Comcast, has appealed to the FCC over SIRIUS and XM repeater regulations.

The Coalition argues that their WiMax deployment (located in the 2 GHz band) has been delayed due to uncertainty over SIRIUS and XM interference.

This is a farce, as the Coalition has been hogging this spectrum for years without any sign of development. SIRIUS and XM have only now become the excuse-of-the-week for the WCS.

As Google and Earthlink have demonstarted, broadband wireless services can be viable using existing public spectrum.

We propose that the FCC acknowledges the potential and popularity of satellite radio, and seize the spectrum from WCS in 2007 when the government buildout deadline expires.

To learn more about the history of WCS and satellite radio, check out Satellite Radio TechWorld.
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Old 11-11-2006, 03:54 PM   #2
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It's an interesting battle.
Whenever XM files FCC paperwork that involves the repeater STAs the document usually closes with a comment about sending a copy of the document to the WCS and that while WCS is concerned about interference XM Satellite Radio is not aware of any deployed WCS networks anywhere that would be affected.

Incidentally the repeaters don't interfere with WCS bandwidth.

I think WCS should not have given XM the cold shoulder when they "amicably" broke off acquisition talks last year.

WCS does not exist. The networks don't exist, its infrastructure doesn't exist, and a product doesn't exist. WCS will fade away silently when the deadline passes and be re-allocated to UMTS or something else.
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Old 11-12-2006, 01:10 PM   #3
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Quote:
Originally Posted by aegrotatio
WCS does not exist. The networks don't exist, its infrastructure doesn't exist, and a product doesn't exist. WCS will fade away silently when the deadline passes and be re-allocated to UMTS or something else.
Let's hope so. It would be great to see it reallocated to SDARS.

Jeff
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Old 11-13-2006, 08:36 AM   #4
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WiMax is an important development for Sprint Nextel. WiMax needs to succeed. They've already launched a trial market in San Jose.
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Old 11-13-2006, 02:29 PM   #5
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If Sirius and XM repeaters and satellites are conforming to specs, there should not be any interference to WCS or anything else. WCS is just as close to SDARS in the spectrum as XM is to Sirius. If Sirius or XM are causing spurious emissions above the level legally permitted but has gone unabated just because adjacent spectrum may have been dormant is not an excuse. If you built your stuff within regulations originally, you wouldn't be whining now. Conform just like every other licenced user of the spectrum has to.

What I'd personally like to see happen with the WCS space, provided WiMax found another home and WCS was never developed would be another mobile satellite service, but one dedicated to video. That way Sirius and XM could quit wasting the bandwidth they've supposedly set aside for this and allow a service provider to provide JUST TV. They could probably fit 20 or so channels in there versus the 4 we would have due to all the audio channels using the bulk of the bandwidth.
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Old 11-14-2006, 10:00 AM   #6
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Funny, this sounds like the same argument that BPL and Amateur Radio have been having for the past couple of years.

Licensed > unlicesned service.
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Old 11-14-2006, 02:35 PM   #7
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I think they should lose it at this point and this should be given to SIRIUS and XM.
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Old 11-14-2006, 05:01 PM   #8
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Either that or relocate WCS to 5.7GHz and 5.9GHz... where they'll never touch us.
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Old 11-15-2006, 04:42 PM   #9
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Quote:
Originally Posted by will_m
Funny, this sounds like the same argument that BPL and Amateur Radio have been having for the past couple of years.

Licensed > unlicesned service.
The difference with that is that BPL is on the exact same frequencies as the ham bands, amongst others. This WCS versus SDARS junk is like 70cm ham versus a GRMS repeaters running out of spec throwing spurs and harmonics from DC to daylight and interfering with your favourite 440 machine that was just set up. Does that make it the ham's fault that their new repeater was assigned a frequency that receives harmful interference from a faulty GMRS repeater just because no one had filed a complaint yet? Of course not. In fact, hams would be running around with doppler DF antennas finding the culprit system and sit outside it with a spectrum analyzer and field strength meters to record their results to send to the owners and then to the FCC for enforcement action if the owners failed to comply. Likewise, just because WCS is just getting around to using their allocation now doesn't mean that Sirius or XM or anyone else has the right to toss interference onto their intermediate frequencies. Imagine if WCS was on the air before SDARS and they were spewing all kinds of garbage into the SDARS band. Would it not be within Sirius' right to get the WCS to comply with FCC limits so that they would not interfere with Sirius?
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Old 11-16-2006, 09:58 PM   #10
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Quote:
Originally Posted by vo1one
The difference with that is that BPL is on the exact same frequencies as the ham bands, amongst others. This WCS versus SDARS junk is like 70cm ham versus a GRMS repeaters running out of spec throwing spurs and harmonics from DC to daylight and interfering with your favourite 440 machine that was just set up. Does that make it the ham's fault that their new repeater was assigned a frequency that receives harmful interference from a faulty GMRS repeater just because no one had filed a complaint yet? Of course not. In fact, hams would be running around with doppler DF antennas finding the culprit system and sit outside it with a spectrum analyzer and field strength meters to record their results to send to the owners and then to the FCC for enforcement action if the owners failed to comply. Likewise, just because WCS is just getting around to using their allocation now doesn't mean that Sirius or XM or anyone else has the right to toss interference onto their intermediate frequencies. Imagine if WCS was on the air before SDARS and they were spewing all kinds of garbage into the SDARS band. Would it not be within Sirius' right to get the WCS to comply with FCC limits so that they would not interfere with Sirius?
First of all, I know how it works, I am a HAM myself. And BPL doesn't just hit the HAM bands, it takes out a wide range of services and it is Part 15. Part 15 is unlicensed while HAM is Part 97.

Problem is companies these days would rather beg for forgiveness then ask for permission.

I know it is not popular on this board, but if Sirius is not operating within their band allotment, then they need to change. Likewise if the WCS services are having issues outside of their allocations, then they need to remedy it.

Last edited by will_m; 11-16-2006 at 10:05 PM..
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Old 11-20-2006, 02:41 PM   #11
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WCS has not presented any evidence that there are spurious signals or harmonics in the WCS band. They are just making noise about it. Nowhere am I saying that "just because WCS is not being used it should be okay regardless." The problem is that the WCS people are just assuming that there is interference without presenting any real-world evidence that there is.

The XM problem with operating "out of spec" was only in regards to power levels... and NOT harmonics or spurious transmissions out-of-band.
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