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Closed Cellular network strength (2g, 3g, 4g/lte)

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ophanim

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Marami sa atin ngayon ay may roong cellphone at gumagamit ng data connection. gumagamit tayo ng mga VPN, modded browsers, at iba pa para mkapag browse sa internet. pero ano nga ba ang kahulugan ng mga letters sa ibabaw ng signal ng ating cellphones?

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GPRS (General Packet Radio Service)
-(First time ko gumamit ng data connection nung elementary pa ako. nag wonder ako, ' bakit meron G sa taas na part ng screen pg may load ako? pag wala akong load nawawala din. pagkatapos uso pa noon yung mga free games, free wallpapers sa smart na website pagkatapos malalaman mo nlg nka subscribe ka na pala sa isang promo ahahaha) heto po ang sumunod sa tinatawag nilang GSM connection . ang speed nya ay 115kb/s. I know na experience nyo na kung ano ka bagal yung 'E', mas mabagal pa po ito. kayang mag load ng mga simple na web pages. tinatawag din itong 2.5G connection
EDGE (Enhanced Data Rates for GSM Evolution)
- may speed po ito hanggang 384kbps. siguro ito na yung pinakamabagal na makukuha natin sa mga phones natin ngayon. tinatawag din itong 2.75G
3G(3rd Generation)
-ito po ang network connection na nag pa unlad ng modern mobile internet. dahil po sa connection na ito, naging possible ang Video calling dahil kaya nitong mg transfer ng data ng hanggang 2mbps.
(hindi ko alam bakit d ko to nakikita sa phone ko. pg hindi LTE or H saken, diretso na E)
HSDPA (High Speed Downlink Packet Access)
-data speed if 7.2mbps. kayang mag stream ng music at video kahit HD pa. tinatawag din itong 3.5G
HSPDA+
-improvement ng HSPDA, 21mbps speed. usually pg nag data ako na hindi LTE at good ang signal ko, naglalaro sa H at H+ ang speed ko. tinatawag din na 3.75G
LTE(Long Term Evolution)
-
naglalaro hanggang 100mbps ang speed at ito ang pinakamabilis na connection natin ngayon sa pilipinas if malakas signal mo, 4G phone mo, 4G sim mo, at may 4G ka din na signal syempre ahaha. but actually, based sa website ng Smart at Globe, hanggang ngayon hindi pa din covered ang lahat ng cities sa Philippines ng 4G signal nila.

Note: ang LTE connection natin ay hindi talaga 100mbps. kasi nga, "Hanggang 100mbps". it means, maximum na yan, hindi pure 100 mbps makukuha natin. yung mga companies and malls, bumibili cla ng packages sa telecoms para maisend yung data ng mga products nila sa database nila at ang speed ay purong-puro, for example 2mbps ang binili ng isang mall, pure 2mbps ang connection nila pero syempre mas mahal kesa sa binibili natin.

To check if LTE signal is available in your area, here's the link:
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Take note din yung mga broadband packages ng mga telco ay hindi bytes-per-second kundi bits-per-second, malaki kaibahan nun.
Example ginagamit mo 5mbps, 1Byte = 8bits, divide mo by 8 magiging 0.625mBps. Yan yung actual speed na makukuha mo
 
Additional info.

TDD-LTE vs FDD-LTE.

TDD-LTE - ginagamitan lang ng isan frequency. Kung bagat ng method ng fdd is ginagawang or inuemulate ng Full Duplex mode ng isang signal.

While on FDD-LTE - gamit ng dalawang frequencies , initransmit ng data from one another to the another tower. So two frequencies = fast data speeds and receiving simultaneously.

Difference on the two.


(1) TD LTE does not require paired spectrum since transmit and receive occurs in the same channel whereas in FD LTE , it requires paired spectrum with different frequencies with guard band.

(2) TD LTE is cheaper than FD LTE since in TD LTE no need of duplexer to isolate transmission and receptions.

(3) In TD LTE, its possible to change the uplink and downlink capacity ratio dynamically according to the need whereas in FD LTE capacity is determined by frequency allocation by the regulatory authorities. So it is difficult to make dynamic change.

(4) In TD LTE larger guard period is necessary to maintain the uplink and downlink separation which will affect the capacity where as in FD LTE the same concept is referred as guard band for isolation of uplink and downlink which will not affect the capacity.

(5) Cross slot interference is there in TD LTE which is not applicable to FD LTE.

 
Additional info.

TDD-LTE vs FDD-LTE.

TDD-LTE - ginagamitan lang ng isan frequency. Kung bagat ng method ng fdd is ginagawang or inuemulate ng Full Duplex mode ng isang signal.

While on FDD-LTE - gamit ng dalawang frequencies , initransmit ng data from one another to the another tower. So two frequencies = fast data speeds and receiving simultaneously.

Difference on the two.


(1) TD LTE does not require paired spectrum since transmit and receive occurs in the same channel whereas in FD LTE , it requires paired spectrum with different frequencies with guard band.

(2) TD LTE is cheaper than FD LTE since in TD LTE no need of duplexer to isolate gear box and receptions.

(3) In TD LTE, its possible to change the uplink and downlink capacity ratio dynamically according to the need whereas in FD LTE capacity is determined by frequency allocation by the regulatory authorities. So it is difficult to make dynamic change.

(4) In TD LTE larger guard period is necessary to maintain the uplink and downlink separation which will affect the capacity where as in FD LTE the same concept is referred as guard band for isolation of uplink and downlink which will not affect the capacity.

(5) Cross slot interference is there in TD LTE which is not applicable to FD LTE.
confirm ko lang kung tama pagkaka intindi ko...
FDD multiple tower ang possible source nag mag transmit ng data kay receiver (modem) for faster speed?

pero paano naman kapag ang frequency ni FDD ay lower kay TDD?
 
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