Selasa, 24 September 2019
5G Interview Questions
5G Interview Questions, 50 Questions on Spectrum
https://www.3g4g.co.uk/5G/5Gtech_Interview0001_Spectrum.pdf
Senin, 16 September 2019
Fungsi-fungsi enode B :
Fungsi-fungsi enode B :
The eNB hosts the following functions:
• Functions for Radio Resource Management: Radio Bearer Control, Radio Admission Control, Connection Mobility Control, Dynamic allocation of resources to UEs in both uplink and downlink (scheduling);
• IP header compression and encryption of user data stream;
• Selection of an MME at UE attachment when no routing to an MME can be
determined from the information provided by the UE;
• Routing of User Plane data towards Serving Gateway;
• Scheduling and transmission of paging messages (originated from the MME);
• Scheduling and transmission of broadcast information (originated from the MME or O&M
Sumber:
https://web.telegram.org/#/im?p=@NPOtelekom
The eNB hosts the following functions:
• Functions for Radio Resource Management: Radio Bearer Control, Radio Admission Control, Connection Mobility Control, Dynamic allocation of resources to UEs in both uplink and downlink (scheduling);
• IP header compression and encryption of user data stream;
• Selection of an MME at UE attachment when no routing to an MME can be
determined from the information provided by the UE;
• Routing of User Plane data towards Serving Gateway;
• Scheduling and transmission of paging messages (originated from the MME);
• Scheduling and transmission of broadcast information (originated from the MME or O&M
Sumber:
https://web.telegram.org/#/im?p=@NPOtelekom
Kamis, 12 September 2019
5G & 6G channel model simulator software
Version 2.0 of NYUSIM, the open source 5G & 6G channel model simulator software, is now available to download
Version 2.0 Changes
Three important channel modeling components, spatial consistency, human blockage, and outdoor-to-indoor (O2I) penetration loss, are implemented in NYUSIM 2.0. Each modeling component will be introduced as follows.
Spatial Consistency: Spatial consistency indicates continuous and realistic channel evolution along the user terminal (UT) trajectory in a local area. NYUSIM with spatial consistency simulates spatially correlated channel impulse responses when a UT moves in a local area or multiple UTs are closely spaced.
Human Blockage Shadowing Loss: NYUSIM 2.0 can simulate human blockage shadowing loss due to a person near the mobile phone (UT) who may block the transmission link. mmWave links are more susceptible to blockage effects because of the short wavelength and the usage of large antenna arrays. The shadowing caused by humans and vehicles has to be taken into account for link budget analysis.
O2I Penetration Loss: NYUSIM 2.0 can simulate the channel responses with building penetration loss for the UTs inside the building. O2I penetration loss becomes more prominent at mmWave frequencies. Many modern buildings are constructed with concrete and have infrared reflecting (IRR) glass, which induce a large penetration loss when a mmWave signal is transmitted from outdoor to indoor or vice versa.
To view all of the updates and to download the simulator, please visit:
http://www.nyuwireless.com/nyusim
Version 2.0 Changes
Three important channel modeling components, spatial consistency, human blockage, and outdoor-to-indoor (O2I) penetration loss, are implemented in NYUSIM 2.0. Each modeling component will be introduced as follows.
Spatial Consistency: Spatial consistency indicates continuous and realistic channel evolution along the user terminal (UT) trajectory in a local area. NYUSIM with spatial consistency simulates spatially correlated channel impulse responses when a UT moves in a local area or multiple UTs are closely spaced.
Human Blockage Shadowing Loss: NYUSIM 2.0 can simulate human blockage shadowing loss due to a person near the mobile phone (UT) who may block the transmission link. mmWave links are more susceptible to blockage effects because of the short wavelength and the usage of large antenna arrays. The shadowing caused by humans and vehicles has to be taken into account for link budget analysis.
O2I Penetration Loss: NYUSIM 2.0 can simulate the channel responses with building penetration loss for the UTs inside the building. O2I penetration loss becomes more prominent at mmWave frequencies. Many modern buildings are constructed with concrete and have infrared reflecting (IRR) glass, which induce a large penetration loss when a mmWave signal is transmitted from outdoor to indoor or vice versa.
To view all of the updates and to download the simulator, please visit:
http://www.nyuwireless.com/nyusim
Selasa, 03 September 2019
Berikut adalah urutan cek Optimization untuk performance Retainability pada 3G
Berikut adalah urutan cek Optimization untuk performance Retainability pada 3G :
Hardware
Transmission
External Interference
Crossfeeder
Co Scrambling code
Coverage Problem
Neighbouring Problem
Problem in 2G network
Database Parameter Problem
contoh yang masuk dalam kategori Retainability adalah CCSR (call completion success rate) CS Voice, CCSR CS Video, CCSR PS, dan HSDPA Retainability Success Rate
Sumber:
https://web.telegram.org/#/im?p=@NPOtelekom
Hardware
Transmission
External Interference
Crossfeeder
Co Scrambling code
Coverage Problem
Neighbouring Problem
Problem in 2G network
Database Parameter Problem
contoh yang masuk dalam kategori Retainability adalah CCSR (call completion success rate) CS Voice, CCSR CS Video, CCSR PS, dan HSDPA Retainability Success Rate
Sumber:
https://web.telegram.org/#/im?p=@NPOtelekom
Langganan:
Postingan (Atom)
