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5G NR RRC: A brief discussion on RRC Inactive state

5G NR RRC: A brief discussion on RRC Inactive state

LTE had only 2 states i.e RRC_IDLE, RRC_CONNECTED. 5G NR has 3 states, the new state is RRC_INACTIVE state. When UE is in RRC_INACTIVE state, it will be in CM-CONNECTED state. UE can move in RNA (RAN-Based Notification Area) without notifying NG_RAN. So when there is …
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5G NR RRC: RRC Introduction and RRC States

5G NR RRC: RRC Introduction and RRC States

In this chapter we shall have an introduction of 5G NR RRC Layer. RRC Layer is a control plane protocol stack. RRC layer is used for Access Layer Signalling AS. RRC is a L3 layer protocol.   Functions of RRC Layer -> AS and NAS related …
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5G NR SDAP Introduction

5G NR SDAP Introduction

SDAP is a new layer in 5G NR. SDAP stands for Service Data Adaption Protocol. SDAP is a user plane protocol in 5G NR. The main functions of SDAP are: 1. Mapping between QoS flow and a data radio bearer. 2. Marking of QFI in both …
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5G NR Reflective QoS

5G NR Reflective QoS

Reflective QoS is a new concept in 5G NR and is applicable for UpLink traffic of UE. This is applicable when SMF has not provided with QoS rules. This is achieved by UE deriving the QoS rules based on received DL traffic. It is possible to …
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5G NR QoS flow mapping

5G NR QoS flow mapping

> WKT QFI is used to identify QoS flow. > QoS flow is the finest granularity of QoS differentiated services in a PDU session. > Multiple services can have the same QoS flow if they are having the same QoS service level. > QFI is unique …
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5G NR QoS Principles, packet filter set, QoS Flow Binding

5G NR QoS Principles, packet filter set, QoS Flow Binding

5G NR QoS Principles SMF requests PCF to give the SM policy for the PDU session. After that SMF will get the SM Policy Decision from PCF. After receiving these policies, SMF will: 1. Create a SDF and QOS flow bind. 2. Determine the control rule …
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5G NR QoS Parameters and 5G QoS characteristics

5G NR QoS Parameters and 5G QoS characteristics

5G QoS Parameters 1. 5QI This value is used as a reference to 5G QoS characteristics defined in clause TS 23 501 5.7.4 table. This value will have a one-to-one mapping to standard combination of 5G QoS characteristics as specified in Table 5.7.4-1. 2. ARP This …
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5G NR QoS Profile, 5G QoS Rules and UL and DL traffic characteristics

5G NR QoS Profile, 5G QoS Rules and UL and DL traffic characteristics

5G NR QoS Profile A QoS flow may be either GBR or non-GBR depending on QoS profile. The QoS profile for a QoS flow is sent to RAN with below QoS parameters: For both GBR and non-GBR, QoS profile shall include below parameters: – 5G QoS …
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5G NR QOS Introduction

5G NR QOS Introduction

5G QoS is based on QoS Flows. Each QoS flow is identified by QoS Flow Identifier (QFI) with in a PDU session. There are 3 different types of QoS Flows: 1. Guaranteed Bit Rate (GBR) QoS Flows 2. Non Guaranteed Bit Rate QoS Flows. 3. Delay …
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5G NR Different types of cells , cell groups and cell nodes

5G NR Different types of cells , cell groups and cell nodes

There are 4 different types of cells in 5G NR: 1. PCell 2. PSCell 3. SCell 4. SpCell 1. PCell: -> Primary Cell -> It will come under MCG. -> There might be many cells under MSG. -> PCell is used to initiate the initial access. …
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