Notes - MIECT
Comunicações Móveis
MIECTRedes de Comunicações 1Redes de Comunicações 2Análise de SistemasCompiladoresBases De DadosInteligência ArtificialSegurança Informática em OrganizaçõesInteracção Humano-ComputadorComputação DistribuídaMétodos Probabilísticos p/ Engenharia InformáticaSistemas De OperaçãoRedes E Sistemas AutónomosComunicações MóveisSegurança Em Redes De ComunicaçõesSistemas Operativos E De Tempo-real
Notes - MIECT
Comunicações Móveis
MIECTRedes de Comunicações 1Redes de Comunicações 2Análise de SistemasCompiladoresBases De DadosInteligência ArtificialSegurança Informática em OrganizaçõesInteracção Humano-ComputadorComputação DistribuídaMétodos Probabilísticos p/ Engenharia InformáticaSistemas De OperaçãoRedes E Sistemas AutónomosComunicações MóveisSegurança Em Redes De ComunicaçõesSistemas Operativos E De Tempo-real
  • Comunicações Móveis
  • The Communication Network
    • The Phone Network
    • The Internet
    • The Mobile Network
  • Wireless Systems
    • Wireless Systems
    • Mobile Hassles
    • Device Issues
    • Why is mobile hard?
  • Physical Layer
    • Classifications of Transmission Media
    • Wireless
    • Radio Transmission Impairments
    • Time-Domain View
    • Propagation Degrades
    • Propagation Mechanisms
    • Redundancy
  • Satellite Networks
    • Satellites
    • Satellite Networks
      • GEO - Geostationary Orbit
      • NGSO - Non Geostationary Orbits
    • Routing
  • Mobile Networks
    • Connections and structures
    • Cell
    • Wireless networks
    • 802.11
    • Infrastructure vs Ad Hoc Mode
    • Data Flow Examples
    • Physical layer
    • MAC
      • Multi-bit Rate
      • MAC Layer
      • Carrier Sense Multiple Access
      • Some More MAC Features
    • How does a station connect to an Access Point?
      • IEEE 802.11 Mobility
    • How to extend range in Wi- Fi?
      • IEEE 1905.1 standard, Convergent Digital Home Network for Heterogeneous Technologies
  • Bluetooth, Wireless Sensor Networks, ZigBee
    • Bluetooth
      • Piconets
        • Device Discovery Illustrated
        • Paging
      • Scatternet
      • Bluetooth Stack
        • Baseband in Bluetooth
        • Adaptation protocols
      • Profiles and security
        • Bluetooth
        • Link keys in a piconet
      • 802.15.x
        • Bluetooth Networking Encapsulation Protocol
        • Bluetooth 4.0: Low Energy
          • Device Modes
          • Link Layer Connection
          • How low can the energy get?
          • BLE and GAP
    • Wireless Sensor Networks
      • MIoT and HIoT are different
      • Types of Wireless Networks
      • Wireless Sensor Network
      • 802.15.4 and Zigbee
      • 802.15.4 / ZigBee Architecture
        • IEEE 802.15.4 MAC
        • Channel Access Mechanism
        • Association procedures
        • ZigBee
        • ZigBee and BLE
  • Cellular Networks
    • Wireless cellular network
    • Wide Area Wireless Sensor Networks (WWSN)
      • LTE-M
      • NB-IoT
      • Spectrum & Access
      • Cellular technologies
      • LoRa
      • The Things Network
    • Technological waves
    • 1G - Mobile voice
    • 2G - Global System for Mobile Communications (GSM)
    • 2.5G - General Packet Radio Service (GPRS)
    • 3G - Universal Mobile Telecommunication System
      • Multiplexing mechanisms
      • SIP Protocol
      • Services in IMS
    • 4G - Long Term Evolution/Evolved Packet Core (LTE/EPC)
      • Long Term Evolution (LTE)
    • 5G
      • Example of verticals
      • 3GPP Releases detail
      • Technologies
      • New Radio is required
      • System architecture
      • Non-stand Alone (NSA)
      • Networks deployment
      • Protocol stacks
      • Procedures
      • QoS Model
      • Mobility in 5G
      • Distributed cloud: Edge Computing and 5G
      • Slicing
    • 6G
  • Software and Virtualization Technologies in Mobile Communication Networks
    • Network Function Virtualization
    • Management and Orchestration
    • Software Defined Networking
      • How to “direct” the controller?
      • Emulation
      • Programming Protocol-Independent Packet Processors (P4)
    • OpenRAN
    • Multi-access Edge Computing
    • Network Automation
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  • Where is IMS ?
  • Basic call flow
  1. Cellular Networks
  2. 3G - Universal Mobile Telecommunication System

Services in IMS

PreviousSIP ProtocolNext4G - Long Term Evolution/Evolved Packet Core (LTE/EPC)

Last updated 2 years ago

IMS is an advanced infrastructure enabling services. But the services are in the end points or peers (calls, etc.), not in the IMS.

Application Servers (AS) are the key part to endow IMS with services.

AS offered services enjoy all IMS advantages.

AS interact – using SIP - with the S-CSCF (which controls user’s SIP session).

AS can behave as another SIP proxy or as a SIP UA (terminal).

Where is IMS ?

Basic call flow