WLAN/Wi-Fi

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所有下一代移动设备将比以往更为依赖愈加强大、有效和复杂的下一代 Wi-Fi。

在过去二十年间，基于 IEEE 802.11 标准系列的无线局域网 (WLAN) 技术是最成功的无线通信技术之一。这项技术主要以正交频分复用 (OFDM) 接入方案为基础，一般在 2.4 GHz、5 GHz 和 60 GHz 等免许可频段中运行，在当今和未来无线通信网络中占有重要地位，并承载其中的各种设备流量。第六代 Wi-Fi (Wi-Fi 6) 基于 IEEE 802.11ax 标准，增强了通信效率，并将在全新可用的 6 GHz 频段运行 (Wi-Fi 6E)。此外，第七代技术 (Wi-Fi 7) 的标准化工作早已开始，旨在实现极其出色的吞吐量 (IEEE 802.11be)。

罗德与施瓦茨 WLAN/Wi-Fi 测试解决方案

罗德与施瓦茨提供广泛的测试与测量设备以用于测试 WLAN 接入点 (AP) 和基站 (STA)。这包括矢量信号发生器等独特的测试仪器，能够以所需频率和带宽生成多个信号流，并具备出色的射频性能。这还包括信号与频谱分析解决方案，能够提供所需的准确度、速度和信号分析带宽。

宽带通信测试仪是一体化解决方案，能够测量 AP 和 STA 发射机和接收机的射频特性。测试仪在信令模式下能够评估端到端性能，并分析协议栈（包括应用层），这对于第六代 Wi-Fi 将变得更加重要。

Wi-Fi device testing

With each new generation of Wi Fi, radio designs increase in complexity to meet customer expectations. Testing Wi-Fi devices, access points (AP) and stations (STA) at all phases of the product lifecycle is essential to standards conformance, regulatory compliance, quality targets and customer experience.

In Wi Fi ecosystems, several industry consortia and interest groups define test requirements and setups. The tests can be divided into three groups:

• Non signaling testing: physical layer compliance and performance testing for early R&D, design verification testing (DVT) and highly automated production environments
• Signaling testing: more complex measurement tasks involving layers above the physical layer
• Reference STA/AP: signaling testing with reference devices mainly used for Wi Fi Alliance certification

Solutions for Wi Fi/WLAN testing

Rohde & Schwarz offers a broad range of test and measurement solutions for Wi Fi AP testing and Wi Fi STA testing:

• WLAN components, such as antennas, filters and power amplifiers
• Chipsets
• Modules
• Devices

Our portfolio includes unique test instruments, such as vector signal generators that are able to generate multiple streams at the required frequencies and bandwidths and demonstrate outstanding RF performance. It also includes solutions for signal and spectrum analysis that provide the required accuracy, speed and signal analysis bandwidths; these solutions are mainly applicable in R&D, verification, qualification and regulatory testing.

For automated non signaling testing, we offer an all in one solution which includes the required chipset interfaces, test automation and integration in customers’ automated test environment (ATE). It measures RF performance with exceptionally high accuracy.

Our multi technology communication testers are all in one solutions for measuring the RF characteristics of transmitters and receivers in APs and STAs. These testers operate in signaling mode to evaluate end to end performance, analyze the protocol stack (including the application layer) and interwork with cellular networks (Wi Fi offload). This functionality will become increasingly important with the latest and upcoming generations of Wi Fi.