The Wireless University Blog

Wireless Mantra of the Week: Virtualization and Automation Technologies

Mantra: Virtualization and automation technologies such as NFV, SDN, OpenStack, and orchestration facilitate deployment of 5G networks. Brief Explanation. Network Functions Virtualization (NFV) virtualizes a Network Function by (typically) deploying software on generic Commercial Off The Shelf (COTS) hardware. NFV reduces costs and provides scalability and agility. Software Defined Networking (SDN) centralizes networking intelligence to […]

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Wireless Mantra of the Week: Service Based Architecture in 5G

Mantra: The Service Based Architecture in 5G uses Network Functions that carry out specific functions.Brief Explanation. LTE uses Reference Point based network architecture, where a limited set of network nodes carry out specific functions using pony-to-point logical interfaces. 5G defined more than a dozen Network Functions ( NFs) , with each NF performing a limited […]

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Wireless Mantra of the Week: NR Air Interface

Mantra: In 5G, the NR air interface provides superior performance compared to 4G LTE.Brief Explanation.The New Radio (NR) air interface includes several enhancements relative to LTE. NR is a beamformed air interface with fewer beams in low frequency bands and more beams at high frequency bands. The flexible NR frame structure supports variable-length slots, symbol-based […]

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Wireless Mantra of the Week: 5G Devices

Mantra: In support of a wide variety of target 5G services and industries or verticals, 5G is expected to support a wide variety of devices such as smartphones, headsets, displays, and countless types of IoT devices. Brief Explanation: Target 5G usage scenarios include eMBB, URLLC, and mMTC. 3GPP initially focused on eMBB in Release 15 […]

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Wireless Mantra of the Week: Key 5G Building Blocks

Mantra: Key building blocks of 5G include the NR air interface, new radio and core networks, virtualization and automation technologies, and a variety of devices. Brief Explanation:3GPP defined 5G in Release 15, which can meet ITU’s IMT-2020 (informally, 5G) performance requirements. The New Radio (NR) air interface features include flexible OFDM numerologies, flexible frame structure, […]

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Wireless Mantra of the Week: SDAP

Mantra:Service Data Adaptation Protocol (SDAP) facilitates implementation of QoS on the New Radio (NR) interface in 5G.Brief Explanation:Like LTE, the NR radio protocol stack utilizes protocols such as Physical (PHY), Medium Access Control (MAC), Radio Link Control (RLC), Packet Data Convergence Protocol (PDCP), and Radio Resource Control (RRC). NR significantly enhances some of these protocols […]

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Wireless Mantra of the Week: Decomposed gNB

Mantra: A 5G gNB can be decomposed into two logical components, gNB-CU and gNB-DU.Brief Explanation. In 5G, the next-generation Node B (gNB) and the User Equipment (UE) communicate with each other using the New Radio (NR) air interface protocol stack. The gNB can be decomposed into gNB-Central Unit (gNB-CU) and gNB-Distributed Unit (gNB-DU). The gNB-CU […]

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Wireless Mantra of the Week: 5G NG-RAN

Mantra: 5G NG-RAN consists of gNBs that utilize NR air interface and even ng-eNBs that utilize LTE air interface but connect to the 5GC.Brief Explanation:Formally, the 5G System (5GS) includes the User Equipment (UE), Next-Generation Radio Access Network (NG-RAN), and the 5G Core (5GC) (also known as Next-Generation Core (NGC)). A typical NG-RAN consists of […]

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Wireless Mantra of the Week: Target 5G Services

Mantra:ITU has defined three usage scenarios for 5G services: eMBB, URLLC, and mMTC. Please visit https://thewirelessuniversity.com for past Mantras!Brief Explanation: 5G can offer amazing new services (e.g., holograms and factory automation) or enhance traditional services (e.g., video streaming and video calls) on a massive scale. International Telecommunication Union (ITU) has defined usage scenarios such as enhanced Mobile […]

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Wireless Mantra of the Week: Massive IoT

Mantra: 5G aims to support the connection density of a million IoT devices per square kilometer.Visit https://thewirelessuniversity.com for all past Mantras!Brief Explanation:One of the three usage scenarios for 5G is massive Machine Type Communications (mMTC). Many IoT devices such as smart water meters and smart sensors generate very little amounts of data and are delay-tolerant. 5G […]

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