89620B

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Technical content

89600 WLA Software

02 | Keysight | 89600 WLA Software – Technical Overview Key Features – Decode and verify PHY, MAC, RLC and RRC-layer messages across multiple radio frames – Extend your existing 89600 LTE FDD test setup with protocol analysis—with minimal additional investment in time or money – Troubleshoot LTE devices at the PHY and protocol layers simultaneously – Synchronize the 89600 VSA to the frame containing the currently select- ed message in WLA – Use charting capability to view power control, timing advance, HARQ and DCI information – Save and recall compressed data for- mat message iles for sharing between groups and fast certiication after BTS software changes Try before you buy! Download the 89600 WLA software and use it free for 30 days to do analysis along with 89600 VSA and your analysis hardware, or explore the software in greater detail with our recorded demo signals by selecting File > Recall > Recall Demo > on the 89600 WLA software toolbar. Request your free trial license today: www.keysight.com/find/89600_WLA_trial

get tougher as wireless standards evolve. messaging that occurs between devices. ultimately improving time to market. LTE technologies in Release 10 or later. protocol messages in an RF context. Figure 1. 89600 WLA shows color coded PHY, MAC, RLC and RRC messages with their d ecoded content. It has built-in charting capability to visualize the information deco ded from the signal under test.

Figure 2. As a software tool, 89600 WLA provides the user an in-depth underst anding of the behavior of MAC, RLC and RRC layers and correlates them to the PHY layer, while operating alon gside the 89600 VSA software.

89600 WLA builds on the hardware/

89600 VSA allows a deeper level of insight

Figure 3. The built-in decoders allow message iltering and tracing of ess ential information associated with es - tablishing a connection between the eNB and UE. This includes recovery of t he settings for uplink transmissions. The example shows the “reference signal power” setting extracted from S IB-2.

reports can change on every subframe. is to represent information graphically. not expecting to see a problem.

89600 VSA software is industry-leading

troubleshooting PHY layer signals in R&D.

89600 VSA to decode and verify the MAC,

Figure 4. Parameters that control the uplink transmission are recover ed and displayed at the touch of an icon. Figure 5. DL throughput chart example.

06 | Keysight | 89600 WLA Software – Technical Overview Key Features Parameter Description Operating modes Operates with time captures or live signals – Analyze multi-frame views of a recording – Use multiple input hardware to capture and analyze uplink and downlink data simult aneously – Filter messages by multiple virtues – Search for items such as CRC failures Operates with real or simulated hardware Capture a signal and analyze it immedi ately or save it as a recording to be analyzed later Standalone operation Analyze previously saved frames Signal formats supported Duplex modes FDD Radio links Uplink, downlink LTE bandwidth 1.4 to 20 MHz LTE transmission modes Downlink: Transmission modes 1-6 (MIMO decoding r equires matching number of measurement input channels to spatial coding layers) Uplink: SISO LTE release support 3GPP Release 8 (requires 89620B-002)3GPP Release 1 0 (RRC message decode only, requires 89620B-003) Supported channels Downlink Uplink Physical – PDCCH – PDSCH – PHICH – PBCH – PUCCH – PUSCH Control information – CFI – HI – DCI – UCI Transport – BCH – DL-S CH – UL-S CH Logical – BCCH – CCCH – DCCH – CCCH – DCCH Available traces Messages – Contains a table of messages, listed in increasing frame number, for all frames in t he LTE signal being analyzed. – The following is a list of the columns in the Messages trace and their descriptio ns: RFN Hex - hexadecimal representation of the Radio Frame Number RFN Dec - decimal representation of the Radio Frame Number Sub No - subframe number within a frame Message Type - the type of message Message Description - type of information the message contains Link - the radio link (uplink or downlink) the message is transmitted on Layer - the LTE layer (PHY, MAC, RRC, RLC) the message is contained in Channel - physical-layer channel containing the message – Messages can be iltered by typing a value into the ilter ields or using dropdown l ist Frames – Contains a tree structure with messages grouped by frame, direction (uplink/ downlink), and physical channel – Clicking a “Sub Frame” node will cause WLA to show the decoded message results in the “Selected Message” trace – Allows users to search for a speciied text within all nodes

07 | Keysight | 89600 WLA Software – Technical Overview Parameter Description Available traces (continued) Selected message – Shows the decoded contents of the currently selected message in the “Messa ges” trace – Depending on the message type, the Selected Message trace will show a combinati on of the following sections: – Decoded RRC message structure – Decoded message contents - PHY (DCI messages), MAC, RLC, and PDCP layer in formation – Raw Hex - a hex representation of the data contained by the message Layer 0 PUSCH detected allocations Shows a resource block mapping grid co ntaining the following uplink allocations in the current frame: – PUSCH allocations deined by DCI Format 0 messages – Random access response grant allocations deined in the Random Access Pre amble ID RAR MAC message or Back-off Indicator RAR MAC message Chart – Generate charts for information decoded from an LTE signal – The following charts can be built-in to the WLA software or can be exported to Microsoft Ofice Excel: – Downlink Control Information (DCI) – requires Microsoft Ofice Excel – Downlink data throughput – Uplink data recovery (HARQ) – Uplink power control – Uplink timing advance General features Save Save frames, measurement setup and trace layout Recall Recall frames, recordings, setup iles, trace layouts and demo signal Help WLA help system is provided in an external browser window to help users learn m ore about WLA Demo signals Various demo signal packages are provided to help users understand the mea surement capabilities and features of the 89600 WLA Key Features (continued)

08 | Keysight | 89600 WLA Software – Technical Overview Related Resources Literature Gaining Deeper Insights into Dynamic BTS/UE Signals with Wireless Link Ana lysis, Application Note Literature number 5990-9179EN 89600B Vector Signal Analysis Software, Brochure Literature number 5990-6384EN

Ordering Information

Model/Option Description Notes 89620B 89600 WLA software, transportable license 89620B-001 Basic wireless link analysis, transportable license – Required – Saved multiframe data can be recalled and analyzed 89620B-002 LTE analysis – Required if used with 89600 VSA to decode protocol data – Requires Option 001 89620B-003 LTE-Advanced analysis – Requires Option 001 and 002 Note: When using the 89600 WLA with 89600 VSA, the VSA software is required to hav e the appropriate license options to be able to perform LTE-FDD modulation analysis. Recommended 89600 VSA software coniguration when used with 89600 WLA Model/Option Description 89601B 89600 VSA software, transportable license 89601B-200 Basic vector signal analysis 89601B-300 Hardware connectivity 89601B-BHD LTE FDD modulation analysis 89601B-BHG LTE-Advanced FDD modulation analysis

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