Anyone from Access KE on list? got a question. I've been doing some research after my conversation with someone on Access KE support staff on phone regarding bandwidth. I found that there was a flaw with something i was told. I was informed that Wimax bandwidth cannot exceed 1.5Mb/s and as such i cannot receive more data on my connection, that would be why i am unable to get a better data speed even though access kenya are already on the fiber connection and are handling Fiber as resellers. To clarify this, i found : *WiMAX* (*Worldwide Interoperability for Microwave Access*) is a communication technology for wirelessly delivering high-speed Internet service to large geographical areas. The 2005 WiMAX revision providedbit rates <http://en.wikipedia.org/wiki/Bit_rate> up to 40 Mbit/s[1]<http://en.wikipedia.org/wiki/WiMAX#cite_note-0> [2] <http://en.wikipedia.org/wiki/WiMAX#cite_note-1> with the 2011 update up to 1 Gbit/s for fixed stations.[3]<http://en.wikipedia.org/wiki/WiMAX#cite_note-UQ-WiMAX2-test-2> It is a part of a “fourth generation,” or 4G<http://en.wikipedia.org/wiki/4G>, of wireless-communication technology Please assist me in understanding why even though they have probably got 1 - 2 GB/s Data lying in their pipes, there is limited capacity being dished out. By my calculations, 1GB/s = 1000MB/s at which i'm considering, they're dishing out 1Mb/s per residential, if they have 10,000 residential clients, that makes 1000Mb/s = 100MB/s. 900MB/s = *WHAT THE HELL?* This is why *W.Isp *is under construction. -- get to know more about me. *http://about.me/rahiminkara * this list is being *watched.*
Perhaps, 1) Shared radio resource? 2) Limited fiber transmission backhaul? 3) From your research, could you also share the practical achievable WiMAX bandwidth.What you've listed, with my limited radio experience, is achievable in a controlled lab, next to a WiMAX BTS with a dedicated fiber backhaul. Looking forward to W.isp *cant wait* bernard On Mon, Nov 7, 2011 at 5:56 PM, Watchman <skunkingrahim@gmail.com> wrote:
Anyone from Access KE on list? got a question.
I've been doing some research after my conversation with someone on Access KE support staff on phone regarding bandwidth. I found that there was a flaw with something i was told. I was informed that Wimax bandwidth cannot exceed 1.5Mb/s and as such i cannot receive more data on my connection, that would be why i am unable to get a better data speed even though access kenya are already on the fiber connection and are handling Fiber as resellers.
To clarify this, i found :
*WiMAX* (*Worldwide Interoperability for Microwave Access*) is a communication technology for wirelessly delivering high-speed Internet service to large geographical areas. The 2005 WiMAX revision providedbit rates <http://en.wikipedia.org/wiki/Bit_rate> up to 40 Mbit/s[1]<http://en.wikipedia.org/wiki/WiMAX#cite_note-0> [2] <http://en.wikipedia.org/wiki/WiMAX#cite_note-1> with the 2011 update up to 1 Gbit/s for fixed stations.[3]<http://en.wikipedia.org/wiki/WiMAX#cite_note-UQ-WiMAX2-test-2> It is a part of a “fourth generation,” or 4G<http://en.wikipedia.org/wiki/4G>, of wireless-communication technology
Please assist me in understanding why even though they have probably got 1 - 2 GB/s Data lying in their pipes, there is limited capacity being dished out. By my calculations, 1GB/s = 1000MB/s at which i'm considering, they're dishing out 1Mb/s per residential, if they have 10,000 residential clients, that makes 1000Mb/s = 100MB/s. 900MB/s = *WHAT THE HELL?*
This is why *W.Isp *is under construction.
-- get to know more about me. *http://about.me/rahiminkara * this list is being *watched.*
_______________________________________________ Skunkworks mailing list Skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------
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Tried to push 2MB on a client CPE it fried out and had to org for a replacement 3.4ghz-3.7 on alvarion On 11/8/11, Bernard Mwagiru <bmwagiru@gmail.com> wrote:
Perhaps, 1) Shared radio resource? 2) Limited fiber transmission backhaul? 3) From your research, could you also share the practical achievable WiMAX bandwidth.What you've listed, with my limited radio experience, is achievable in a controlled lab, next to a WiMAX BTS with a dedicated fiber backhaul.
Looking forward to W.isp *cant wait*
bernard
On Mon, Nov 7, 2011 at 5:56 PM, Watchman <skunkingrahim@gmail.com> wrote:
Anyone from Access KE on list? got a question.
I've been doing some research after my conversation with someone on Access KE support staff on phone regarding bandwidth. I found that there was a flaw with something i was told. I was informed that Wimax bandwidth cannot exceed 1.5Mb/s and as such i cannot receive more data on my connection, that would be why i am unable to get a better data speed even though access kenya are already on the fiber connection and are handling Fiber as resellers.
To clarify this, i found :
*WiMAX* (*Worldwide Interoperability for Microwave Access*) is a communication technology for wirelessly delivering high-speed Internet service to large geographical areas. The 2005 WiMAX revision providedbit rates <http://en.wikipedia.org/wiki/Bit_rate> up to 40 Mbit/s[1]<http://en.wikipedia.org/wiki/WiMAX#cite_note-0> [2] <http://en.wikipedia.org/wiki/WiMAX#cite_note-1> with the 2011 update up to 1 Gbit/s for fixed stations.[3]<http://en.wikipedia.org/wiki/WiMAX#cite_note-UQ-WiMAX2-test-2> It is a part of a “fourth generation,” or 4G<http://en.wikipedia.org/wiki/4G>, of wireless-communication technology
Please assist me in understanding why even though they have probably got 1 - 2 GB/s Data lying in their pipes, there is limited capacity being dished out. By my calculations, 1GB/s = 1000MB/s at which i'm considering, they're dishing out 1Mb/s per residential, if they have 10,000 residential clients, that makes 1000Mb/s = 100MB/s. 900MB/s = *WHAT THE HELL?*
This is why *W.Isp *is under construction.
-- get to know more about me. *http://about.me/rahiminkara * this list is being *watched.*
_______________________________________________ Skunkworks mailing list Skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------
Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke
-- Dauglas Kidake 0720-381640 020-2795100 020-2242019
Its boils down to link budget - most ISP's will have 2mbps cap per CPE. Assuming they have old wimax basestations with AP being capable of 40mbps(assuming no interference) they can do a max of 40 x 6 = 240mbps if using 60 degrees sectorial radios. So even if you have 2Gbps fiber backhaul the RF last mile will be a bottleneck. My 2 cents. Im not a wimax/RF expert. -----Original Message----- From: skunkworks-bounces@lists.my.co.ke [mailto:skunkworks-bounces@lists.my.co.ke] On Behalf Of dauglas kidake Sent: Tuesday, November 08, 2011 1:36 PM To: Skunkworks Mailing List Subject: Re: [Skunkworks] Bandwidth queries. Tried to push 2MB on a client CPE it fried out and had to org for a replacement 3.4ghz-3.7 on alvarion On 11/8/11, Bernard Mwagiru <bmwagiru@gmail.com> wrote:
Perhaps, 1) Shared radio resource? 2) Limited fiber transmission backhaul? 3) From your research, could you also share the practical achievable WiMAX bandwidth.What you've listed, with my limited radio experience, is achievable in a controlled lab, next to a WiMAX BTS with a dedicated fiber backhaul.
Looking forward to W.isp *cant wait*
bernard
On Mon, Nov 7, 2011 at 5:56 PM, Watchman <skunkingrahim@gmail.com> wrote:
Anyone from Access KE on list? got a question.
I've been doing some research after my conversation with someone on Access KE support staff on phone regarding bandwidth. I found that there was a flaw with something i was told. I was informed that Wimax bandwidth cannot exceed 1.5Mb/s and as such i cannot receive more data on my connection, that would be why i am unable to get a better data speed even though access kenya are already on the fiber connection and are handling Fiber as resellers.
To clarify this, i found :
*WiMAX* (*Worldwide Interoperability for Microwave Access*) is a communication technology for wirelessly delivering high-speed Internet service to large geographical areas. The 2005 WiMAX revision providedbit rates <http://en.wikipedia.org/wiki/Bit_rate> up to 40 Mbit/s[1]<http://en.wikipedia.org/wiki/WiMAX#cite_note-0> [2] <http://en.wikipedia.org/wiki/WiMAX#cite_note-1> with the 2011 update up to 1 Gbit/s for fixed
stations.[3]<http://en.wikipedia.org/wiki/WiMAX#cite_note-UQ-WiMAX2-test-2>
It is a part of a "fourth generation," or 4G<http://en.wikipedia.org/wiki/4G>, of wireless-communication technology
Please assist me in understanding why even though they have probably got 1 - 2 GB/s Data lying in their pipes, there is limited capacity being dished out. By my calculations, 1GB/s = 1000MB/s at which i'm considering, they're dishing out 1Mb/s per residential, if they have 10,000 residential clients, that makes 1000Mb/s = 100MB/s. 900MB/s = *WHAT THE HELL?*
This is why *W.Isp *is under construction.
-- get to know more about me. *http://about.me/rahiminkara * this list is being *watched.*
_______________________________________________ Skunkworks mailing list Skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------
Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke
-- Dauglas Kidake 0720-381640 020-2795100 020-2242019 _______________________________________________ Skunkworks mailing list Skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------ Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke
The throughput/bandwidth you can get on any wireless RF setup is based on how much frequency in MHz you allocate. You achieve a bits/Hz of around 2.7 or thereabouts realistically on WIMAX downlinks at 64QAM modulation. Typically an operator will assign something like 3.5MHz to each sector on WiMAX, and you can have 4 or 6 sector sites, or even more - depending on how you do your frequency planning to avoid interference between your sites & frequencies. If you want to offer more bandwidth, you add more spectrum. Until you run out - then you have to add another BS nearby to increase spectrum/capacity. Laws of physics. This is why people acquire companies - for additional frequency. In Kenya, WiMAX frequencies in the popular 3.5 GHz bands were heavily segmented, so most operators got about 7mhz or 14mhz which they had to plan out & use on the networks. That's why with LTE they're trying to avoid heavily segmenting the frequency bands, and have a single consortium. And why spectrum can be so expensive. So this means typically a WiMAX sector will have 8-10mb. The total 4-sector BS would have 40mb total available bandwidth. A 6-sector BS would have 60mb total. Of course a sector faces a given direction, and will have a limit on how many subs can connect to it, besides, only covers 60 or 90 degrees. So you as a user will typically be sitting in a sector of 8-10mb, and you can't say he has access to the full BS capacity. The actual bandwidth varies widely from operator to operator. That bandwidth gets divided by how many subs there are on that sector. If you have many BSes, with a radius of say 500m, you will have fewer subs per sector sharing. If you go radius of 5km, you will have more ... it depends on how many people live in that area. So you might need to look at how many BSes your operator has and how far they're spaced out, and how many customers they serve per sector to determine how the network will perform in theory. This is why typical packages sold on wimax are 1mb or less ... because wireless technologies will only be as good as the spectrum available. This is why people run cable. It's the only medium that can deliver you upwards of these 10mb per sector speeds. cable can run from 1Gbit to 2.5Gbit to 10GBit per port - and a port normally serves between 50-100 users. Lots of dedicated capacity available to anyone. Don't stress your operator with this little knowledge but get your physics books out first :) Or just push for more fiber wherever you are ... ----- Original Message ----- From: "Tony Gacheru" <tonygacheru@gmail.com> To: "Skunkworks Mailing List" <skunkworks@lists.my.co.ke> Sent: Tuesday, November 8, 2011 2:26:53 PM Subject: Re: [Skunkworks] Bandwidth queries. Its boils down to link budget - most ISP's will have 2mbps cap per CPE. Assuming they have old wimax basestations with AP being capable of 40mbps(assuming no interference) they can do a max of 40 x 6 = 240mbps if using 60 degrees sectorial radios. So even if you have 2Gbps fiber backhaul the RF last mile will be a bottleneck. My 2 cents. Im not a wimax/RF expert. -----Original Message----- From: skunkworks-bounces@lists.my.co.ke [mailto:skunkworks-bounces@lists.my.co.ke] On Behalf Of dauglas kidake Sent: Tuesday, November 08, 2011 1:36 PM To: Skunkworks Mailing List Subject: Re: [Skunkworks] Bandwidth queries. Tried to push 2MB on a client CPE it fried out and had to org for a replacement 3.4ghz-3.7 on alvarion On 11/8/11, Bernard Mwagiru <bmwagiru@gmail.com> wrote:
Perhaps, 1) Shared radio resource? 2) Limited fiber transmission backhaul? 3) From your research, could you also share the practical achievable WiMAX bandwidth.What you've listed, with my limited radio experience, is achievable in a controlled lab, next to a WiMAX BTS with a dedicated fiber backhaul.
Looking forward to W.isp *cant wait*
bernard
On Mon, Nov 7, 2011 at 5:56 PM, Watchman <skunkingrahim@gmail.com> wrote:
Anyone from Access KE on list? got a question.
I've been doing some research after my conversation with someone on Access KE support staff on phone regarding bandwidth. I found that there was a flaw with something i was told. I was informed that Wimax bandwidth cannot exceed 1.5Mb/s and as such i cannot receive more data on my connection, that would be why i am unable to get a better data speed even though access kenya are already on the fiber connection and are handling Fiber as resellers.
To clarify this, i found :
*WiMAX* (*Worldwide Interoperability for Microwave Access*) is a communication technology for wirelessly delivering high-speed Internet service to large geographical areas. The 2005 WiMAX revision providedbit rates <http://en.wikipedia.org/wiki/Bit_rate> up to 40 Mbit/s[1]<http://en.wikipedia.org/wiki/WiMAX#cite_note-0> [2] <http://en.wikipedia.org/wiki/WiMAX#cite_note-1> with the 2011 update up to 1 Gbit/s for fixed
stations.[3]<http://en.wikipedia.org/wiki/WiMAX#cite_note-UQ-WiMAX2-test-2>
It is a part of a "fourth generation," or 4G<http://en.wikipedia.org/wiki/4G>, of wireless-communication technology
Please assist me in understanding why even though they have probably got 1 - 2 GB/s Data lying in their pipes, there is limited capacity being dished out. By my calculations, 1GB/s = 1000MB/s at which i'm considering, they're dishing out 1Mb/s per residential, if they have 10,000 residential clients, that makes 1000Mb/s = 100MB/s. 900MB/s = *WHAT THE HELL?*
This is why *W.Isp *is under construction.
-- get to know more about me. *http://about.me/rahiminkara * this list is being *watched.*
_______________________________________________ Skunkworks mailing list Skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------
Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke
-- Dauglas Kidake 0720-381640 020-2795100 020-2242019 _______________________________________________ Skunkworks mailing list Skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------ Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke _______________________________________________ Skunkworks mailing list Skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------ Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke
@Watchman, by now you should know that the Kenyan Telecom sector is, unfortunately what it is. As you research more into setting up your own ISP, you will discover many issues that show the total failures of protocol and implementation. Reliability and service delivery is something you cannot count on unless you operate your own network while ensuring the right people manage it. Wimax is far capable of faster throughputs but the segmentation loads ( kenyan style ), and as @Riyaz describes, is the limitations in the marketplace. Most Wimax deployments were meant to be done in a Point-Point and Mulit-Point scenario, Kenyan Telcos went to the next step of producing a shared platform ( think of Wifi ) that would not produce better throughputs. The end result of the shared system was that it is virtually impossible for any Wimax operator to sustain reliability and support of such systems. If you are serious of setting up a proper ISP with throughputs and service levels to a higher degree of depolyments, you need to ensure that you avoid the pitfalls of the Kenyan Telecom sector. Whether the market place will think price first and quality later is another issue because internet costs is supposed to be much cheaper now, but are they really? If an STM1 155Mbit/s cost now is 38,750USD per monthly, what will be your target market? Also keep this in mind, the throughput figures in tehcnology are often over rated. Take your USB 2.0 connection, the theory put it at 400Mbits/s ( serial data transfer rate ) but in realtime scenarios I've never seen it exceed 25Mbit/s rates. HTHs. :-)
participants (6)
-
aki -
Bernard Mwagiru -
dauglas kidake -
Riyaz Bachani -
Tony Gacheru -
Watchman