scholarly journals NR Sidelink Enhancement in 3GPP Release 17

2021 ◽  
Author(s):  
Karthikeyan Ganesan ◽  
Prateek Basu Mallick ◽  
Joachim Löhr
Keyword(s):  
Public Safety ◽  
Resource Selection ◽  
Power Saving ◽  
Selection Procedure ◽  
Use Case ◽  
Half Duplex ◽  
New Radio ◽  
Key Features ◽  
Work Item ◽  
Hidden Nodes

3GPP is currently studying enhancements to Sidelink (SL) operations for 5G New Radio (NR) in a Release 17 Work Item which is planned to be finished by end of 2021. The NR Sidelink (SL) Work Item in Release 17 includes several key features targeting reliability enhancements, power saving and coverage enhancements by expanding the scope of NR sidelink to target V2X, commercial D2D use-case and Public safety. This paper provides an insight on the current 3GPP Release 17 NR SL design describing necessary enhancements in the physical, protocol layer to support inter-UE coordination message for reliability enhancement for autonomous resource selection procedure by providing feedback on the half-duplex, persistent collision and hidden nodes. In addition, the power saving feature is addressed by introducing a SL DRX mechanism for the PC5 interface which defines active reception and transmission periods between a TX and the peer Rx UE(s) and also between Tx UE and gNB. Furthermore, this paper outlines details on the Sidelink Relay feature for coverage enhancement by describing possible solutions for UE to Network relay and UE to UE relay.

scholarly journals Application of Bat Algorithm for The Detection of Hidden Nodes in IEEE802.11ah Networks

2019 ◽  
Vol 18 (1) ◽  
pp. 11-15 ◽  
Author(s):  
Kofoworola Fapohunda ◽  
Eberechukwu Numan Paulson ◽  
Zubair Suleiman ◽  
Oladimeji Saliu ◽  
David Michael ◽  
...  
Keyword(s):  
Ieee 802.11 ◽  
Power Saving ◽  
Bat Algorithm ◽  
Ieee 802.11A ◽  
Hidden Node ◽  
Power Saving Mode ◽  
Saving Mode ◽  
Node Problem ◽  
Mode A ◽  
Hidden Nodes

Hidden node problem sometimes referred to as frequent packets collision that mostly leads to loss of packets is no longer new in wireless networks because it affects the previous IEEE802.11 standards. The new IEEE802.11ah standard which is also a sub-standard of IEEE 802.11 is no exemption. As a matter of fact, IEEE802.11ah suffers from a hidden node problem more than networks (IEEE 802.11a/b/n/ac) due to their wider coverage which is up to 1km, high number of devices they can support (over 8000 nodes to one AP) and frequent simultaneous sleeping and sending of the nodes (power saving mode). A few researchers have worked on this hidden node problem in IEEE802.11ah but could not get a lasting solution to it. Therefore, this paper proposes an algorithm which detects hidden nodes and also proposes a theoretical solution based on previous works which was also experimentally verified through the BIHD-CM.

scholarly journals 5G Evolution for Multicast and Broadcast Services in 3GPP Release 17

2021 ◽  
Author(s):  
Vinay Kumar Shrivastava ◽  
Sangkyu Baek ◽  
Youngkyo Baek
Keyword(s):  
Use Cases ◽  
Low Latency ◽  
Core Network ◽  
Evolution Path ◽  
New Radio ◽  
Technical Features ◽  
Communications System ◽  
3Rd Generation Partnership Project ◽  
Work Item ◽  
Late Entrant

<div>5G communications system is on the evolution path with present focus on enabling advanced features and new service capabilities. Multicast and Broadcast Services (MBS) are being considered as one of the most promising use cases of 5G. As a late entrant to 3rd Generation Partnership Project (3GPP) 5G standards, MBS work item is presently being developed over existing 5G framework, and is targeted to enhance 5G New Radio and 5G Core Network capabilities for a reliable, low latency, resource efficient, and massive deployment of a wide array of multicast and broadcast services. MBS development entails enhancements for network and user equipment side on architectural, protocol and transmission aspects in order to address a new set of multicast and broadcast service requirements in 5G. In this article, we present an introduction to MBS standardization and outline newly introduced technical features, and their use cases.</div>

UE Measurements Relaxation for UE Power Saving in 5G New Radio

2021 ◽  
Author(s):  
Daniela Laselva ◽  
Laura L. Sanchez ◽  
Faranaz Sabouri-S ◽  
Qiyang Zhao ◽  
Jorma Kaikkonen ◽  
...  
Keyword(s):  
Power Saving ◽  
New Radio

Energy-Efficient Autonomous Resource Selection for Power-Saving Users in NR V2X

2021 ◽  
Author(s):  
Dariush Mohammad Soleymani ◽  
Lavanya Ravichandran ◽  
Mohammad Reza Gholami ◽  
Giovanni Del Galdo ◽  
Mehdi Harounabadi
Keyword(s):  
Energy Efficient ◽  
Resource Selection ◽  
Power Saving ◽  
Selection For

scholarly journals 5G for the Support of Public Safety Services

2021 ◽  
Author(s):  
Ioannis P. Chochliouros ◽  
Anastasia S. Spiliopoulou ◽  
Pavlos I. Lazaridis ◽  
Zaharias D. Zaharis ◽  
Maria-Rita Spada ◽  
...  
Keyword(s):  
Public Safety ◽  
Small Cell ◽  
Mobile Technologies ◽  
Use Case ◽  
5G Networks ◽  
Great Flexibility ◽  
The Public ◽  
Commercial Networks ◽  
Mission Critical ◽  
Multi Access

AbstractNext-generation mobile technologies are the enablers for meeting the variable specific requirements of the public safety (PS) community. In particular, due to the development of commercially deployed 5G networks, PS providers look for ways to implement related solutions upon such infrastructures, potentially in a shared use with existing commercial networks. In particular, LTE and 5G NR networks are rapidly gaining recognition as an all-inclusive critical communications platform for the delivery of both mission and business critical applications. Within this scope, we take into account the innovative architectural approach that has been proposed by the 5G ESSENCE project, addressing the paradigms of edge computing and small cell as-a-service that has been realised via a cloud-enabled small cell infrastructure leveraging multi-access technologies in 5G, where we propose a dedicated PS use case, able to offer a mission critical push-to-talk service as well as a Chat and Localisation service. Each one of these services is associated to a dedicated network slice within the scope of the corresponding fundamental 5G ESSENCE architecture and both services are provided via suitable VNFs, thus offering great flexibility to serve PS needs together. We further discuss the overall scenario deployment with the related technical enablers and the proposed functionalities, per case. The corresponding end-to-end slicing makes possible to allocate both radio and cloud resources to the involved critical actors, in an automated and elastic way.

scholarly journals 5G Evolution for Multicast and Broadcast Services in 3GPP Release 17

2021 ◽  
Author(s):  
Vinay Kumar Shrivastava ◽  
Sangkyu Baek ◽  
Youngkyo Baek
Keyword(s):  
Use Cases ◽  
Low Latency ◽  
Core Network ◽  
Evolution Path ◽  
New Radio ◽  
Technical Features ◽  
Communications System ◽  
3Rd Generation Partnership Project ◽  
Work Item ◽  
Late Entrant

<div>5G communications system is on the evolution path with present focus on enabling advanced features and new service capabilities. Multicast and Broadcast Services (MBS) are being considered as one of the most promising use cases of 5G. As a late entrant to 3rd Generation Partnership Project (3GPP) 5G standards, MBS work item is presently being developed over existing 5G framework, and is targeted to enhance 5G New Radio and 5G Core Network capabilities for a reliable, low latency, resource efficient, and massive deployment of a wide array of multicast and broadcast services. MBS development entails enhancements for network and user equipment side on architectural, protocol and transmission aspects in order to address a new set of multicast and broadcast service requirements in 5G. In this article, we present an introduction to MBS standardization and outline newly introduced technical features, and their use cases.</div>

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