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Local Breakout in LTE

Local Breakout is a key feature of LTE. It enables visitor networks to breakout internet sessions into home network, instead of routing back to Home networks, eg. FaceBook vs Banking apps.


Uses Diameter over S9 interface:

  • Lies between the H-PCRF and the V-PCRF (Policy Charging and Rules Function)
  • These functions use Diameter to exchange information about the quality of service a roaming customer should get as well as charging information once Local Breakout has begun.

The benefits of Local Breakout are:

  • Lower latency experienced by the roaming device
  • Lower GRX bandwidth requirement between Home network and Visited network.


Ashruti Singh
Senior Product Marketing Manager- SAP Mobile Services
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