Featured post

LTE Network Fundamentals

  LTE Network Fundamentals: Essential Questions and Answers :- Q.1 What is possible range of PCI? ->0-503, PSS(0,1,2) and SSS(0-167) Q.2 What are the Physical Downlink Signals? ->Reference signal and synchronization signals - PSS and SSS Q.3 Difference between RSRP & RSRQ? ->RSRP – avg power across all received RS symbols in measurement bandwidth ->RSRQ-NxRSRP/RSSI ->N- no of RBs of eutra rssi measurement bandwidth Q.4 Repetition period of MIB? ->40ms Q.5 What is modulation scheme used for MIB? ->QPSK Q.6 Which channel carries user data in DL? (Basic) ->PDSCH Q.7 How many OFDM symbols are used for PDCCH? ->1, 2, or 3 as indicated by PCFICH Q.8 Which Physical DL channel carries the Paging channel? ->PDSCH Q.9 S1 Interface ->Enode B - MME - S1C and Enode B - SGW - S1U Q.10 Function of PHICH ->HARQ indication Q.11 Modulation scheme in PHICH? ->BPSK Q.12 What All BW supported in LTE? ->1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz Q.13 What is X2? -&
Post a Comment

Evolution of IEEE 802.11 Standard

 Evolution of IEEE 802.11 Standard





1. 802.11-1997: The original Wi-Fi protocol with a maximum speed of 2 Mbps in the 2.4 GHz band.

2. 802.11a: Introduced 54 Mbps speeds using the less congested 5 GHz band.

3. 802.11b: Popularized Wi-Fi with up to 11 Mbps speeds on the more crowded 2.4 GHz band.

4. 802.11g: Combined the best of 802.11a and b, offering 54 Mbps speeds in the 2.4 GHz band.

5. 802.11n (Wi-Fi 4): Integrated MIMO technology for speeds up to 600 Mbps and operation across both 2.4 and 5 GHz bands.

6. 802.11ac (Wi-Fi 5): Enhanced MIMO (MU-MIMO), achieving several Gbps speeds in the 5 GHz band.

7. 802.11ad: Introduced short-range, high-speed Wi-Fi up to 7 Gbps in the 60 GHz band.

8. 802.11ax (Wi-Fi 6):Improved efficiency and speeds with support for both 2.4 and 5 GHz bands, targeting both capacity and efficiency.

9. 802.11ay: An enhancement of 802.11ad, aiming for even higher speeds and better reliability in the 60 GHz band.

10. 802.11be (Wi-Fi 7): Future standard expected to enhance speeds and efficiency, including improved capabilities in 2.4, 5, and 6 GHz bands.

Comments

Post a Comment

Popular posts from this blog

MODULE NAME

Image
           TELECOM SOFTWARE TELECOM SOLUTION NETWORK PROJECT   MODULE NAME v FXJB:- Flexi multi radio 900 MHz revision v FRDJ:- Flexi radio module 900 MHz revision v FXED:- Flexi multi radio 1800 MHz revision v AREA:- Air scale Radio module 1800 MHz version v FRGT:- Flexi radio module 2100 MHz revision v FRGQ:- Flexi single radio module 2100 MHz revision v FRGP:- Flexi radio module 2100 MHz revision v FXEF:- Flexi multi radio 1800 MHz revision v FXEB:- Flexi multi radio 1800 MHz revision v FSMF:- Flexi system module revision v ESMB:- Flexi Edge System module revision v FTIF:- Flexi Transport interfaces revision v FTIB:- Flexi Transport interfaces revision v TDD:- Time-division Duplex v FDD :- Frequency-division Duplex v CRFS:- Classic radio frequency share v IP:- Internet Protocol
Read more