Welcome to the Cafetele Telecom Training! We’re here to keep you informed about important topics in the world of telecom. If you have any questions or if there’s a specific topic you’d like us to cover, please don’t hesitate to reach out. We value your feedback and would love to hear from you. Stay tuned for regular updates and insightful content from our team. Together, let’s explore the exciting world of telecommunications!
LTE Downlink Channels Physical Downlink Shared Channel (PDSCH) Carries the DL-SCH and PCH. DL-SCH contains actual user data. Physical Downlink Control Channel (PDCCH) Informs the UE about the resource allocation of PCH and DL-SCH, and HARQ information related to DL-SCH. Carries the uplink scheduling grant. Physical HARQ Indicator Channel (PHICH) Carries ACK/NACKs in response to
What is Antenna Port? An antenna port is in the 3GPP specifications an abstract concept that is a logical entity rather than a physical antenna. Each antenna port is associated with a specific set of reference signals such that the channel over which a symbol is transmitted on that antenna port can be distinguished from
First we have to understand what is SIP ? In an IMS network, Session Initiation Protocol (SIP) messages are exchanged between UEs using signaling PDP contexts through the PS domain of the LTEnetwork. Similarly, media streams (voice/video) are transmitted using media PDP contexts. Like common interactive PDP contexts, media PDP contexts do not require special
VOLTE: VOICE OVER LTE VoIP call support over an LTE network requires IMS support. When a UE with an active VoIP call leaves LTE coverage to an area with only 1xRTT coverage, the call can be seamlessly handed over from the LTE-IMS to the 1xRTT CS domain. Call continuity from IMS to the CS domain
SS/PBCH Time domain Resource Allocation SSB Burst set : All SSBs are transmitted within 5 ms. Maxmimum SSB in Cell is depend upon frequency. Less than 3 GHz band maximum SSB is 4 3 GHz to 6 GHz maximum SSB is 8 greater than 6 GHz maximum SSB is 64. SS Block Periodicity : SSB
Random Access: Random access required to do uplink synchronization between UE and eNB and gNB. There are 2 types of Random Access Procedure in 5G Network. Contention Based Random Access Contention Based Random access has four-step MSG1 ( UE to gNB or MN-eNB) MSG2 ( gNB to UE) Msg3 (UE to gNB) Ms4 (gNB to
Main pillar of the NR is a Synchronization Signal and PBCH block (SS/PBCH block). SSB Block contains PSS 2 SSS PBCH In this article , I am going to discuss about PSS. Lets see the PCI formula below. Lets first understand LTE PSS location in sub frame. For FDD frame, PSS is allocated on symbol
3GPP 3rd generation partnership program5G-GUTI 5G globally unique temporary identity5G-AN 5G access network5GC 5G core network5GMM 5G mobility management5GSM 5G session management5GTF 5G technical Forum5QI 5G QoS identifier AAA Authentication, authorization and acountingACK AcknowledgementAKA Authentication and key agreementAM Acknowledged modeAMBR Aggregate maximum bit rateAMC Adaptive modulation and codingAMD Acknowledge mode dataAMF Access and mobility management