Questions about 4G RBI

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johnr

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#1368792 18-Aug-2015 19:20

coffeebaron:
Deathstroke:
johnr: CA is carrier aggregation and it's effectively the same as using 2 hoses to full a pool instead of one

Takes 2 frequencies and uses them to deliver mobile broadband in the downlink direction

hey john just a quick question, does vodafone RBI still use the old direct line of sight antennas?

They never have been line of sight antennas. Directional yes.

Think they mean ' Yagi '

Deathstroke

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#1368798 18-Aug-2015 19:28

coffeebaron:
Deathstroke:
johnr: CA is carrier aggregation and it's effectively the same as using 2 hoses to full a pool instead of one

Takes 2 frequencies and uses them to deliver mobile broadband in the downlink direction

hey john just a quick question, does vodafone RBI still use the old direct line of sight antennas?

They never have been line of sight antennas. Directional yes.

last time i called vodafone which was a few months ago they said i couldnt get it because i didnt have a direct line of sight to the tower but now a few people from vodafone have been saying that it doesnt require direct line of sight so im kind of confused.

sbiddle

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#1368808 18-Aug-2015 19:45

Deathstroke:
coffeebaron:
Deathstroke:
johnr: CA is carrier aggregation and it's effectively the same as using 2 hoses to full a pool instead of one

Takes 2 frequencies and uses them to deliver mobile broadband in the downlink direction

hey john just a quick question, does vodafone RBI still use the old direct line of sight antennas?

They never have been line of sight antennas. Directional yes.

last time i called vodafone which was a few months ago they said i couldnt get it because i didnt have a direct line of sight to the tower but now a few people from vodafone have been saying that it doesnt require direct line of sight so im kind of confused.

Mobile technologies (GSM/3G/LTE) have never been LoS technologies. Yes LoS does help and will improve signal, but it's by no means essential. Mobile phones simply wouldn't work if you always had to have LoS with a cellsite.

Deathstroke

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#1368810 18-Aug-2015 19:49

sbiddle:
Deathstroke:
coffeebaron:
Deathstroke:
johnr: CA is carrier aggregation and it's effectively the same as using 2 hoses to full a pool instead of one

Takes 2 frequencies and uses them to deliver mobile broadband in the downlink direction

hey john just a quick question, does vodafone RBI still use the old direct line of sight antennas?

They never have been line of sight antennas. Directional yes.

last time i called vodafone which was a few months ago they said i couldnt get it because i didnt have a direct line of sight to the tower but now a few people from vodafone have been saying that it doesnt require direct line of sight so im kind of confused.

Mobile technologies (GSM/3G/LTE) have never been LoS technologies. Yes LoS does help and will improve signal, but it's by no means essential. Mobile phones simply wouldn't work if you always had to have LoS with a cellsite.

wow thanks now im kind of annoyed by the person i spoke to on the phone at the time lol

dwl

371 posts

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#1368823 18-Aug-2015 20:26

Deathstroke:
sbiddle: Mobile technologies (GSM/3G/LTE) have never been LoS technologies. Yes LoS does help and will improve signal, but it's by no means essential. Mobile phones simply wouldn't work if you always had to have LoS with a cellsite.
wow thanks now im kind of annoyed by the person i spoke to on the phone at the time lol

I would go a bit further and say that in an urban setting close to the cellsite many users won't be LoS due to local clutter (especially buildings) and getting a good service, but for rural RBI then LoS becomes a much bigger issue with hills often the reason for loss of LoS. The signal at these frequencies has limited ability to diffract around objects.

In many cases rural users are multiple km from the nearest cellsite. When that distance gets to 10's of km the ability to get adequate service when behind any sort of hill becomes a major issue. The external antenna, typically a yagi, will help a lot due to both the extra gain and hopefully being mounted high on the house to avoid the local clutter (e.g. other buildings).

If the person on the phone thought you were a large distance from the site I think it is reasonable to say that LoS may be needed to get a service although saying it was mandatory might be going a bit far. The cellular operators for RBI do not want many users at the minimum possible level as they use a disproportionate amount of the resource compared to those with a strong signal.

If a handheld phone gets a bar or two then should be fine with an external antenna but don't expect to be able to get a service at say the house if you can't use the mobile there but it works 500 metres away at the end of the drive. At least we all have these portable test tools now.

benmurphy66

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#1373358 24-Aug-2015 21:09

I hope this isn't too dumb a question. I have just got Vodafone RBI. From a performance perspective does the band make any difference. My router seems to switch around between band 3 and band 28, I know these are difference frequencies but wasn't sure if they impacted expected performance or not.

johnr

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#1373360 24-Aug-2015 21:12

benmurphy66: I hope this isn't too dumb a question. I have just got Vodafone RBI. From a performance perspective does the band make any difference. My router seems to switch around between band 3 and band 28, I know these are difference frequencies but wasn't sure if they impacted expected performance or not.

Nope

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benmurphy66

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#1373362 24-Aug-2015 21:12

johnr:
benmurphy66: I hope this isn't too dumb a question. I have just got Vodafone RBI. From a performance perspective does the band make any difference. My router seems to switch around between band 3 and band 28, I know these are difference frequencies but wasn't sure if they impacted expected performance or not.

Nope

As always thanks John.

grant_k

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#1373447 24-Aug-2015 23:51

benmurphy66: I hope this isn't too dumb a question. I have just got Vodafone RBI. From a performance perspective does the band make any difference. My router seems to switch around between band 3 and band 28, I know these are difference frequencies but wasn't sure if they impacted expected performance or not.

Something to be aware of is that Vodafone only has 15MHz of bandwidth on Band 28 vs. 20MHz of bandwidth on Band 3. I have seen download speeds of up to 70Mbps on Band 3 vs. maximum of around 55Mbps on Band 28. Upload speeds seemed much the same.

Also, if you have any vegetation in your signal path, you will probably find that the signal strength on Band 3 (1800MHz) drops off noticeably when it is raining, whereas Band 28 (700MHz) would be much less affected. A friend of mine is using 1800MHz 4G in the local area, and that has been his experience.

sbiddle

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#1373467 25-Aug-2015 07:24

Don't the new CPE support bonding between 700 and 1800 anyway?

coffeebaron

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#1373491 25-Aug-2015 08:24

sbiddle: Don't the new CPE support bonding between 700 and 1800 anyway?

No, they are CAT4 only. No carrier aggregation at this stage.

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Deathstroke

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#1374043 25-Aug-2015 17:21

just had my ultimate broadband kit installed. averaging at 10mb download 47 ping and 0.90mb upload thats while on 4g. kind of dissapointed as my handset gets 30-40mb download on 4g itself.

johnr

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#1374044 25-Aug-2015 17:23

Deathstroke: just had my ultimate broadband kit installed. averaging at 10mb download 47 ping and 0.90mb upload thats while on 4g. kind of dissapointed as my handset gets 30-40mb download on 4g itself.

Don't test just over WiFi

grant_k

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#1374066 25-Aug-2015 17:50

Deathstroke: just had my ultimate broadband kit installed. averaging at 10mb download 47 ping and 0.90mb upload thats while on 4g. kind of dissapointed as my handset gets 30-40mb download on 4g itself.

What are your figures for RSRQ, RSRP and RSSI?

coffeebaron

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#1374150 25-Aug-2015 19:37

Dual or single antenna kit?

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