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TTCN-3 Based Automation Framework for LTE UE Protocol Stack Testing

TTCN-3 Based Automation Framework for LTE UE Protocol Stack Testing. LTE Network Architecture. GERAN. SGSN. HSS. Operator IP Services. PCRF. UTRAN. S3. S6a. MME. S7. S4. LTE- Uu. S10. S11. Internet. eNB. Serving GW. PDN GW. UE. LTE- Uu. S1u. S5. SGi. S2a. X2. S2b.

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TTCN-3 Based Automation Framework for LTE UE Protocol Stack Testing

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  1. TTCN-3 Based Automation Framework for LTE UE Protocol Stack Testing

  2. LTE Network Architecture GERAN SGSN HSS Operator IP Services PCRF UTRAN S3 S6a MME S7 S4 LTE-Uu S10 S11 Internet eNB Serving GW PDN GW UE LTE-Uu S1u S5 SGi S2a X2 S2b S2c ePDG Trusted non 3GPP IP Access Trusted/Untrusted non-3GPP/3GPP IP Access Wn* Untrusted non 3GPP IP Access UE

  3. Network Simulator

  4. Protocol Stack Functionality Relay UE LTE-Uu eNobeB S1-MME MME • UE protocol stack communicates with multiple elements in the network side though eNodeB. • UE control plane protocol layers are mapped to eNodeB and MME. • Except for the NAS layer messages, the other layers of UE interact directly with eNodeB protocol stack.

  5. Testing Architecture Test Management Control & Logging Automation Framework TCI • UE Protocol Stack ETSI Test Scripts in TTCN-3 TRI SRB Codec ASN.1 DRB Codec Codec Layer PDCP RLC MAC L2 Layer Stubs MAC-Phy System Adaption Layer UDP / IP

  6. Components

  7. Incremental Development & Testing

  8. Test Execution • Test case drives the specified procedures for validation of the stack. • The Test Manager of IDE provides a GUI interface to run the test cases individually or in batches. • The frame work provides log capturing and debugging mechanism both in text and graphical representation

  9. Our Value Adds on ETSI’s Solution • Our Value Adds • In order to optimize the development cycle, we have utilized ETSI test suites, commercially available IDE and external plug ins. • Adaptation layers were developed • A pseudo MAC-Phy interface layer was implemented. • ETSI’s Solution • ETSI Test suite provides TTCN-3 scripts for protocol conformance testing. • It provides parallel test components and ports for seamless mapping of protocol layers for network side entities.

  10. Challenges

  11. Thank You Our Business Knowledge, Your Winning Edge. Experts in Test Automation

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