Transcript
IxCatapult LTE eNode B User Plane Validation
IxCatapult™ LTE eNode B User Plane Validation 3GPP Release 8 introduces a new radio access technology called Long Term Evolution (LTE). The new LTE network presents many new testing challenges including new elements and increased bandwidth demand. One of these new network elements is the eNode B (eNB), a single radio access network (RAN) node that interfaces with the user equipment (UE). With the IxCatapult test system, Ixia is well suited to LTE testing and specifically the eNB. A key area for eNB testing is validation of user plane traffic. The IxCatapult supports eNB user plane validation with a range of traffic generation and analysis testing tools. These tools are easily integrated with control plane test scripts through the S1, X2 and Uu interfaces. The flexibility of the IxCatapult allows users to easily control traffic types and levels on a per call basis, both at set up and at run time. Included as part of the IxCatapult are standard tools for collecting runtime statistics and for statistical analysis. These tools are configurable for customized analysis. The IxCatapult is a multi-protocol, multi-user test system, consisting of hardware and software (e.g. tools, utilities, encoder/decoders/state machines) to perform a broad range of LTE eNB testing activity. From simple functional and negative testing, to entity integration testing, and extensive stress testing, the IxCatapult is a comprehensive test solution.
LTE eNode B User Plane Validation Tools:
Key Features: • Test capability of eNB to transmit/route the bearer traffic on S1, X2 and Uu interfaces Validation of the concurrent support of multiple media streams per UE - RTP, UDP, TCP Bit Error Rate Testing (BERT)/ Block Error Rate Testing (BLERT) Quality of Service (QoS) - rate control of GBR (Guaranteed Bit Rate), MBR (Maximum Bite Rate) and AMBR (Aggregate Maximum Bit Rate) Packet analysis (delay, packet loss, jitter) in all directions Voice/Audio (AMR NB/WB, G.711, G.729, G.723, G.726) traffic generation - all directions Video (H.261, H.263, MPEG-2, MPEG-4) traffic generation – all directions Support of ‘any IP’ (IP Pass-through) live applications (FTP, HTTP, proprietary applications) issued to/from a simulated UE via simulation on S1, X2 and Uu Support for IPv4, IPv6 and IPsec SIP/SDP sessions simulation and analysis • Security Validate eNB Packet Data Control Protocol (PDCP) user plane IP Robust Header Compression (ROHC), RRC ciphering and integrity protection Validate NAS signaling security (confidentiality and integrity protection)
• IxCatapult Traffic Generator - produces voice and video traffic according to various CODEC definitions into multiple individual bearer streams. Users can either select from pre-coded frame samples or supply voice or video files in a supported format (.wav, .mpg) for conversion to a coded stream. Bearer traffic is inserted into the user specified channels with the data profile, packet size and rate defined by the original sample. • IxCatapult X•Stream - generates high levels of fixed frame packet traffic on the S1 and X2 interfaces, generating tens of thousands of bearer connections on a single IxCatapult Gigabit Ethernet interface (aggregate of 3.5+ Gb/s per interface). Control and configuration of traffic patterns is possible through the user interfaces. Statistical displays show connection counts, packet transmit and receive rates. • IxCatapult IP Pass-through - allows real IP based client and/or server application to connect to each other through a device or network under test. Internal applications running on the IxCatapult and external IP applications such as FTP, HTTP and Skype™ can exchange data through the eNB.
S1-U
S1-AP X•Stream
PESQ
Example: eNode B User Plane Validation with IxCatapult using Traffic Generator, X•Stream and IP Pass-through tools
26601 Agoura Rd, Calabasas, CA 91302 PN: 915-2710-01 Rev B Sept, 2009
IxCatapult DCT2000
eNodeB
tel: 818 871 1800 fax: 818 871 1805 www.ixiacom.com
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IxCatapult LTE eNode B User Plane Validation
Performance Validation:
Capacity Validation:
• Validates QoS for mixed types of bearer traffic
• Traffic generator - up to 300Mb/s per mesh processor card
• Validates Quality of Experience - evaluates media streams (voice) using Perceptual Evaluation of Speech Quality (PESQ) • Verifies capacity of eNB to handle UE maximum bit-rate • Verifies and monitors capacity of eNB to handle large number of UEs
• X•Stream - up to 3.5Gb/s per Gigabit Ethernet interface card. Simulated user capacity is scalable to thousands per processor card based on traffic type. • IP Pass-through - 400Mb/s per mesh processor card
• Validates signaling and data latency of the eNB Supported Technologies, Protocols and Tools Protocol
Specification(s)
PDCP
3GPP 36.323
RRC
3GPP 36.331
NAS
3GPP 24.008, 24.301
Uu
3GPP 36.302 (PHY), 36.321 (MAC), 36.322 (RLC)
X2
3GPP 36.423, 36.424
S1
3GPP 36.413, 36.414
RTP
RFC3267, RFC2833, RFC4587, RFC2833, RFC4587, RFC4629, RFC2250, RFC3016, et.al
UDP
RFC 768
TCP
RFC 793
BLERT/BERT PESQ or QoE CODECS HTTP
SIP/SDP
PN9 and PN15 per ITU-T 0.151 and ITU-T 0.153 Perceptual evaluation of speech quality (PESQ), an objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech CODECs. ITU-T Recommendation P.862, Geneva, February 2001 AMR NB/WB, G.711, G.726, G.729, G.723, H.261, H.263, MPEG-2, MPEG-4 RFC 2616, RFC 2965, RFC 2617 RFC2543, RFC3261, RFC2387, RFC2976, RFC3204, RFC3262, RFC3265, RFC3310, RFC3311, RFC3323, RFC3325, RFC3326, RFC3327, RFC3388, RFC3420, RFC3515, RFC3680, RFC3840, RFC3841, RFC3856, RFC3857, RFC3858, RFC3863, RFC3891, RFC3892, RFC3903, RFC3966, RFC4032, RFC4354 For a more comprehensive list of SIP/SDP specifications supported on IxCatapult, please contact Ixia Sales.
IPv4
RFC791
IPv6
RFC2460, RFC2461, RFC2492
IPsec
RFC2367 AH in transport mode ESP in tunnel mode SHA-1 and MD5 authentication security algorithms 3DES and AES confidentiality security algorithms IKE and ISAKMP for automated key exchange and SA setup Only Main mode for ISAKMP SA creation (Phase 1) Diffie-Hellman Group 2 for Diffie-Hellman exchange Use of pre-shared secrets for authentication Read and write SPD and SAD • IKE v1 and v2
26601 Agoura Rd, Calabasas, CA 91302 PN: 915-2710-01 Rev B Sept, 2009
tel: 818 871 1800 fax: 818 871 1805 www.ixiacom.com
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