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The Different Levels of QoS and Why They Matter

Consultant WebinarOctober 2017Bruce Lawler

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What Is QoS

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Journey to QoS

LTE 8 LTE 9 LTE 10 LTE 11 LTE 12 LTE 13 LTE 14• VoLTE

• Enhanced QPP

• Mobile Data

• Support for LTE Band 14

• Location Services

• MBMS

• Emergency Calling

• Cell on Wheels

• Relays for LTE

• Increased Data Throughput

• 1.25W Devices on Band 14

• Group Communication Enablers

• Proximity-based Service (ProSe)

• MC Voice*

• ProSeEnhancements

• Isolated Operations

• eMBMSEnhancements

• MC Data*

• MC Video*

2009 2010 2011 2012 2013 2014 2015 20162008 2017

Actually started in 2008…

* Application Standards

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What Is QoS

• LTE & MCPTT standards provide parameters for prioritization of traffic on common network• 3GPP Rel 12 introduces new QCI parameters

for mission critical communications

• Provides users with prioritized access to network resources and guaranteed level of performance

• Tight integration between network and application is key to effectively implement prioritization • Dynamic QoS and priority via Rx interface

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Prioritization Tools

Allocation and Retention Priority

(ARP)

Admission Priority, Preemption capability, Preemption vulnerability

Scheduling Priority (QCI)

Scheduling and traffic prioritization QoS Class Indicator (QCI) – Packet Priority, Delay budget, Packet Error loss

Radio Admission Control (ACB)

Prevent entire classes of user from connecting to network using Access Class Barring (ACB)Access classes : 0-15

Service A

Rate and Bandwidth

Management

GBR – Guaranteed Bit Rate, Maximum Bit RateNon-GBR – Aggregate Maximum Bit Rate

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Why QoS Matters

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Why QoS Matters

• Can be used to manage network resources in real time as roles, locations and media types change

• Provide consistent, predictable performance for critical delay-sensitive applications, such as streaming video

• Intelligently allocate resources to those who need them most at that moment

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Why It Matters at an Incident in the Field

Incident Management System sets Priority and QoS based

on location and roleUsers in region assigned

corresponding priority

Users entering region automatically assigned

priority

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Different Levels of QoS

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Different Levels of QoS

Static QoS

• Resources committed and reserved ahead of calls based on user’s provisioned level of service

Dynamic QoS

• Resources assigned dynamically when calls establishment

Policy-based QoS

• Dynamically based on policies in place:• User role• Application type• Location• Incident

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QPP Evolves from Static to Dynamic with Local Control

https://www.firstnet.gov/newsroom/blog/firstnet-works-psac-pscr-quality-service-priority-and-preemption-framework

FirstNet QPP Framework

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Network Integration and the Rx Interface

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QoS and Network Integration

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Without Integration - No Control

A Simple View of Network Integration

NETWORKPTT APP

App and Network lacks synchronization and integration required for MCPTT standard

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With Network Integration

MCPTT NETWORKMCPTT APP

Priority QoS

Dynamic QPP Manager

Local Control

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• Default Priority is elevated when incident occurs

• Incident detected by • Responder emergency button• Administration • Application analysis

• Application Server communicates with PCRF (via Rx interface) to elevate QoSpriority

Dynamic Prioritization with Rx Interface

User Role / Selection

Eligible Services

Service A

Service B

Service C

QoS Profile (QCI, ARP)

Participants’ QoS

Upgrade

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Quality of Service (QoS)

Static QoS adds a dedicated laneCommercial wireless network without QoS

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Static QoS

A dedicated lane can still suffer from traffic

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Dynamic QoS

Dynamic lanes allocated by role, location, type, etc.

* Network Integration Required

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QoS Summary

• LTE and MCPTT standards provide needed parameters for prioritization of critical PTT traffic• New QCI parameters for mission critical communications

• Tight integration between network and application is key to effectively implement prioritization • Roles-based QoS and priority via Rx interface

• Coordination and Operational processes required for QoSassignment between networks

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Questions?

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Thank youkodiakptt.com