1. I hope you can help me clarify this question. To clarify, I have a fundamental question that relates to Dual Connectivity i.e. N-DC refers to the dual connection of 4G wireless access network and 5G NR. I am asking you as I have attended and subscribed to Award Solutions webinars in the past. 2. Let’s say that we are using Band-X in 4G and another similar band in 5G and are attempting to communicate with both RATs to take advantage of EN-DC. 3. The question is what will happen if there is overlap in terms of the “spectrum occupied”. 4. Let’s say that the 4G component has been assigned spectrum in Band 3 from 1830 MHz through to 1850 MHz (i.e. a chunk of 20 MHz Bandwidth). 5. Let’s say that the 5G component has been assigned spectrum in Band n3 from 1820.45 MHz through to 1830.45 MHz (i.e. a chunk of 10 MHz Bandwidth). 6. In such a scenario, there is an overlap of 450 KHz between these two components i.e. the assigned 5G-NR band component eats into the 4g spectrum component by 450 KHz. 7. Will such a deployment work in light of the designated configuration based on existing product implementations? There are bound to be issues in decoding such transmissions at the UE because of the overlap in the spectrum. The reason, I am asking this question was because an argument (however erroneous) can be made that the 5G transmissions would potentially be orthogonal to the 4G transmissions (even if they have an SCS of 15 kHz or 30 kHz) and hence the decoding at the mobile will work because orthogonality will prevent any decoding issues. I do not agree with this argument i.e. that the orthogonality provided by the OFDM structure of the waveforms would protect them against each other (i.e. from the UE perspective in the sense that the UE can successfully decode the two transmissions). I would be very grateful if you could enlighten me with your perspective with references (if applicable). 8. If the answer is in the negative, from an R&D implementation, perspective - what changes would one need to implement to make such a configuration (i.e. characterized by overlapping assigned spectrums) workable in realistic network implementations? 9. It would also be immensely helpful if you could further substantiate your arguments with references from the relevant 3GPP specifications (or other relevant specifications) or draw my attention to any specific specifications or publications which can further clarify my doubt?
السلام عليكم ورحمه الله وبركاته جزاك الله عنا ألف خير وجدد الرحمات على والدتك وعلى جميع موتى المسلمين من فضلكم أستاذنا الكريم ماذا أضافت خاصية Flexcibal CA على CA
السلام عليكم بش مهندس ممكن سؤال Why we are using adaptive modulation and flexible bandwidth on LTE ? And why we are using -48 volts in telecom? Thanks 🙏
-The different modulation is used to make a link adaption instead of power control in LTE. -Flexible BW provides LTE advantage to support different use cases based on the case.
1. I hope you can help me clarify this question. To clarify, I have a fundamental question that relates to Dual Connectivity i.e. N-DC refers to the dual connection of 4G wireless access network and 5G NR. I am asking you as I have attended and subscribed to Award Solutions webinars in the past.
2. Let’s say that we are using Band-X in 4G and another similar band in 5G and are attempting to communicate with both RATs to take advantage of EN-DC.
3. The question is what will happen if there is overlap in terms of the “spectrum occupied”.
4. Let’s say that the 4G component has been assigned spectrum in Band 3 from 1830 MHz through to 1850 MHz (i.e. a chunk of 20 MHz Bandwidth).
5. Let’s say that the 5G component has been assigned spectrum in Band n3 from 1820.45 MHz through to 1830.45 MHz (i.e. a chunk of 10 MHz Bandwidth).
6. In such a scenario, there is an overlap of 450 KHz between these two components i.e. the assigned 5G-NR band component eats into the 4g spectrum component by 450 KHz.
7. Will such a deployment work in light of the designated configuration based on existing product implementations? There are bound to be issues in decoding such transmissions at the UE because of the overlap in the spectrum. The reason, I am asking this question was because an argument (however erroneous) can be made that the 5G transmissions would potentially be orthogonal to the 4G transmissions (even if they have an SCS of 15 kHz or 30 kHz) and hence the decoding at the mobile will work because orthogonality will prevent any decoding issues. I do not agree with this argument i.e. that the orthogonality provided by the OFDM structure of the waveforms would protect them against each other (i.e. from the UE perspective in the sense that the UE can successfully decode the two transmissions). I would be very grateful if you could enlighten me with your perspective with references (if applicable).
8. If the answer is in the negative, from an R&D implementation, perspective - what changes would one need to implement to make such a configuration (i.e. characterized by overlapping assigned spectrums) workable in realistic network implementations?
9. It would also be immensely helpful if you could further substantiate your arguments with references from the relevant 3GPP specifications (or other relevant specifications) or draw my attention to any specific specifications or publications which can further clarify my doubt?
thanks a lot brother..... do not forget to change UL from 300 to 75 :)
السلام عليكم ورحمه الله وبركاته
جزاك الله عنا ألف خير وجدد الرحمات على والدتك وعلى جميع موتى المسلمين
من فضلكم أستاذنا الكريم
ماذا أضافت خاصية
Flexcibal CA
على CA
وعليكم السلام ورحمة الله وبركاته
بصراحة أنا مشتغلتش قبل كده الا على ال
CA
السلام عليكم بش مهندس ممكن سؤال
Why we are using adaptive modulation and flexible bandwidth on LTE ?
And why we are using -48 volts in telecom?
Thanks 🙏
-The different modulation is used to make a link adaption instead of power control in LTE.
-Flexible BW provides LTE advantage to support different use cases based on the case.
سلام عليكم
لو سمحت اوصل ليك ازاي؟
Email me moniem@moniem-tech.com
Thank you a lot
You are welcome:)
عاشت ايدك
تسلم يا رب