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How UE select suitable cell in LTE

How UE select suitable cell in LTE Here write in simple words how UE select suitable cell in LTE. After the UE has selected a PLMN, is a done selecting cell – in other words, looking for an appropriate cell camp. While camping on the cell, and that is the UE acquires broadcast. Subsequently, the … Read more

Reverse Link Traffic Channel Physical Layer in CDMA

The CDMA reverse link uses a different coding scheme to transmit data. Unlike the forward link, the reverse link cannot support a pilot channel for synchronous demodulation (since each mobile station would need its own pilot channel). The lack of a pilot channel is partially responsible for the reverse link’s lower capacity than the forward … Read more

How Forward Link Channel Format in CDMA

The Base Station transmitter signal is, however, the composite of many channels (with a minimum of four). The Pilot channel is unmodulated (Walsh code 0); it consists of only the final spreading sequence (short sequences). The Pilot channel is used by all mobiles linked to a cell as a coherent phase reference and also provides … Read more

LTE NETWORK ARCHITECTURE OVERVIEW

LTE NETWORK ARCHITECTURE OVERVIEW The Long-Term Evolution (LTE) network architecture is a crucial component of modern wireless communication systems. In this overview, we will delve into the key aspects of LTE network architecture, including its structure, nodes, and functionalities. ENodeB: The Radio Access Node At the heart of the LTE network is the ENodeB (eNB), … Read more

Resource Block & Physical Resource Block in LTE

Resource Block & Physical Resource Block in LTE What is Resource block in lte? :- A resource block is the smallest unit of resources which allocated to a user. The resource block is 1 slot long in time and 180 kHz wide in frequency. Resource Block Multiplex multiple users both in time and frequency, together … Read more

What are the components of the EPC?

What are the components of the EPC? The Evolved Packet Core (EPC) is a critical part of the 4G LTE and 5G mobile network architecture, responsible for handling data traffic, mobility management, and various network functions. To provide you with a detailed explanation of the components of the EPC, let’s break it down into its … Read more

What are the various interfaces of GPRS?

What are the various interfaces of GPRS? GPRS is a mobile data service that was widely used before the advent of faster 3G, 4G, and 5G networks. It played a crucial role in enabling mobile internet and data transmission. To understand GPRS interfaces, let’s break them down: Air Interface (Um Interface): Um Interface: The air … Read more

How Cell Search in wcdma – initial Synchronization Procedure

Cell Search Procedure purpose is to give the UE the possibility of finding a wcdma cell and of determining the downlink scrambling code and frame synchronization of that wcdma cell. This is typically performed in 3 steps: PSCH (Slot synchronization): The UE uses the SCH’s primary synchronization code to acquire slot synchronization to a wcdma … Read more

How Channel Mapping in WCDMA

Here I Write about how the mapping can be done between logical, transport and physical channels. Not all physical channels are represented because not all physical channels correspond to a transport channel. The mapping between logical channels and transport channels is done by the MAC sub-layer. Different connections can be made between logical and transport … Read more

What is HS-DPCCH and High-Speed Dedicated Physical Control Channel work in WCDMA

Carrying information to acknowledge downlink transport blocks and feedback information to the system for scheduling and link adaptation of transport block CQI and ACK/NACK Physical Channel, Uplink, SF=256 A High-Speed Dedicated Physical Control Channel, or HS-DPCCH, is the third uplink channel for WCDMA. It makes it possible for changing power relations between to the dedicated … Read more