Home LTE NB-IoT 5G(NR-NSA) As per readers request this article is based on some 5G abbreviations (PCell,spCell,Scell,PSCell,MCG.SCG,Master-Node,Secondary-Node) for better understanding. What is Master Node? Master node: The node (radio access node) that provides the control plane connection to the core network in case of multi radio dual connectivity (MR-DC). For example, it can be master eNB in EN-DC, a Master ng-eNB in NGEN-DC What is Secondary Node? Secondary node: the radio access node, with no control plane connection to the core network, providing additional resources to the UE in case of MR-DC. For example, It may be an en-gNB in EN-DC or a Secondary ng-eNB (in NE-DC). What is MCG? MCG: Master Cell group It is a group of serving cells associated with the Maste...
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DeleteUltra IoT C-SGN Overview
ReplyDeleteThe Ultra IoT C-SGN (CIoT Serving Gateway Node) is a combined node EPC implementation option that minimizes the number of physical entities by collocating EPS entities in the control plane and user plane paths. C-SGN combines the MME, P-GW and S-GW functions to provide a highly optimized CIoT solution.
The Ultra IoT C-SGN runs on virtualized environments to support Cellular IoT (CIoT) traffic. The CIoT EPS Optimizations in this release provide improved support of small data transfer.
The topics in this chapter include:
Overview of IoT
CIoT EPS Optimizations
Overview of IoT
The Internet of Things (IoT) is a computing concept where everyday objects have internet connectivity and they can collect and exchange data. The IoT network comprises of a wide variety of physical devices, vehicles, buildings, and any other devices or objects used in our daily lives. IoT is expected to bring a revolution of tremendous growth opportunities by bringing millions of new set of devices, applications and new set of enablement of protocols/technologies into the network.
The IoT devices use MTC (Machine Type Communication). The key objective is to provide solutions to support high efficient handling of tracking devices using small data transmissions for ultra-low complexity, power constrained, and low data-rate IoT devices, called CIoT devices. The main requirements for IoT devices is EPS optimization for small data transfer.
NarrowBand IoT (NB-IoT) is a narrowband radio technology that is optimized for IoT in 3GPP Release 13. Optimizations on the core network are applicable to both NB-IoT RAT and EUTRAN RAT (for eMTC / LTE-M devices).
CIoT Overview
Platform Requirements
Licensing Requirements
Standards Compliance
CIoT Overview
Cellular Internet of Things (CIoT) technology is an important branch of IoT. The CIoT devices use small data transmissions for ultra-low complexity as they also use low data-rates and have power constraints. While the number of CIoT devices in the network might increase exponentially, the data size per device remains small.
The following enhancements are required to support CIoT devices:
Minimize system signaling load over the radio interface
Provide adequate security to the EPS system
Improve battery life of the devices
Support delivery of IP data
Support delivery of non-IP data
Support of SMS
Extended coverage
Low cost
The EPS optimized for CIoT supports different traffic patterns as compared to normal UEs and supports only a sub-set and necessary functionalities as compared with the existing EPS core network, in a single logical entity known as the CIoT Serving Gateway Node (C-SGN). The C-SGN is a new node specified for optimizations that consolidates functions from control plane node (MME) and user plane nodes (S-GW, P-GW, and SAE-GW).