What happens when a mobile(UE) is switched on in LTE/UMTS in Hindi
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- Опубліковано 9 лют 2025
- What happens when a mobile (UE) is switched on in LTE in Hindi
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UE tune to each and every channel that it support and measure RSSI.
RSSI is simply a measurement of whatever energy/power it can measure. This measurement does not require any channel coding process. So at this step, UE does not need to know anything about the network. At this step, UE does not try to decode PCPICH in WCDMA or Sync/Reference Signal in LTE to detect Physical Cell ID. It just measure the power of each channel. As UE measure RSSI for each channel, it create a list of each channel numbers with the measured RSSI.
Then UE go through the list from
step i and figure out all the channels which shows RSSI value greater than the threshold
Then the question would be "Any frequency with Passing RSSI value can be the one that UE can camp on ?". The answer is "Not Necessarily".
For find the more proper candidate to camp on, UE performs following steps.
UE decode PCPICH and measure the power and detect physical cell ID from the each candidate from step ii
Some candidate give successful result but some would not. UE make the list of all the successful tries
From the list with successful result from step iii, UE decode MIBs for each and every candidate. With this procedure, now UE can make a list of frequency, Physical Cell ID PSC in case of WCDMA and PLMN.
Based on USIM information and the candidate table from the step iv, can figure out which cell is the real candidate cell to camp on and try decoding System Information and proceed to registration process.
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garda ura diye maalik. Thanks for wonderful explanation.
Thanks sir, it really helped!
NICE EXPLANATION ANAND BHAI. THANK YOU FOR MAKING THE VIDEO
Plz keep it up next prta nhi banaiye isi languge me 👌👌👌👌👌
Super explanation sir 🙏
Ek number Bhai explained
Please suggest me sir to know lte ...
From the basic point..
Which video is necessary to watch firstly ..
Kaha se strt kru video dekhna ..jisse lte se related jobs get kr sku ..
Please suggest me sir
Good explanation. here the master later is the layer which controls PHY layer and that is RRC. The protocol stack evokes at once but wait for instruction according to the process(specifications).
Please provide lte attach procedure
sure mam
मैं मोबाइल मैकेनिक ।मेरे लिए मोबाइल नेटवर्क कैसे काम करता है यह जानना बड़ा जरूरी होता है क्योंकि अगर हम प्रोसेस को जानेंगे तभी मोबाइल रिपेयर कर पाएंगे क्या ऊपर ऊपर जानकारी के लिए एक वीडियो बना सकते है जिससे हम फाल्ट की एनालसिस कर सकें
Good..
Thanks
Why carrier spacing 12khz??
15KHz
Anand Technical Support that was typo error.
Why the spacing is only 15khz ???
It was typo error.
Why this is 15 khz???
@@prashumrn For minimize performance degradation from phase noise, the subcarrier spacing should be greater than 10 kHz. to support UE up to a speed of 250 km/h, the subcarrier spacing should be around 9-17 kHz. As a result, a subcarrier spacing of 15 kHz was chosen for LTE.
Anand Technical Support kuch bhi likh do google se search maar kar??
gr8
thanks