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Architecture Issues in 4G Networks

Explore the unique aspects of 4G networks compared to wireline all IP, including access network, mobility management, registration requirements, QoS needs, and more. Learn about the challenges and opportunities for access operators in the evolving landscape of mobile wireless architecture.

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Architecture Issues in 4G Networks

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  1. Architecture Issues in 4G Networks Mauricio Arango Sun Microsystems Laboratories Email: Mauricio.Arango@sun.com Tel: (954) 217-0535

  2. Unique aspects of 4G as compared with wireline all IP • Access network: mobile & wireless • Special routing requirements - Mobilitymanagement • Special registration requirements – AAA • Special QoS requirements Mauricio Arango

  3. Internet RAN All IP Core Network PSTN & Legacy Cellular 4G Architecture GWY Mauricio Arango

  4. Access Gwy Access Gwy All IP Core Network 4G Access Network RNC Base Station Base Station RNC Base Station RAN Mauricio Arango

  5. 4G – All-IP Mobile Wireless Access Architecture • Application-independent • Radio Access Network • Non-IP components function as link layer – tunnels between access gateway and mobile terminal – handle microbobility • Macromobility – access points are access gateways • Evolution towards all-IP RAN – IP packets to the base station Mauricio Arango

  6. Billing SIP Proxy AAA Location Data-bases Mobility Mgmt IP network PSTN internet internet MGC Signaling Gwy RAN MM resource functions Media Gateway 4G Core Network JAIN/Parlay, other Application SIP, other Optional Application Core Access Gateway QoS Basic Core Terminal Mauricio Arango

  7. Unique aspects of 4G as compared with wireline all IP – cont. • Advanced IP-based terminals: • Not unique to wireless but embraced by industry – frequent update • Better user interface for many apps, not only voice • Large architecture implications Mauricio Arango

  8. Internet SIP Proxy Application Server All IP Core Access Network 4G VoIP SIP Architecture SIP SIP Mauricio Arango

  9. Internet Softswitch Softswitch All IP Core Access Network 4G VoIP Softswitch Architecture SIP MEGACO/MGCP Mauricio Arango

  10. Internet SIP App Server or Softswitch A Transition Architecture SIP Legacy signaling All IP Core Access Network Access Gateway Mauricio Arango

  11. Internet SIP Proxy 3rd party Application Server All IP Core Access Network Walled garden vs bazaar SIP SIP Firewall/ App-level gateway Mauricio Arango

  12. Challenges for 4G infrastructures • Walled-garden vs. bazaar dilemma • With open Internet access and intelligent terminals how do access operators recover their investment? • What could be new sources of revenue for access operators? • Access with QoS • Location information • Customer information • Competition with low-cost grassroots networks – Wireless Ethernet 802.11b Mauricio Arango

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