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CN-121985364-A - 5G frequency band radio frequency link estimation method of Wi-Fi7 chip scheme wireless access point

CN121985364ACN 121985364 ACN121985364 ACN 121985364ACN-121985364-A

Abstract

The invention relates to the technical field of radio frequency design of wireless access points, in particular to a 5G frequency band radio frequency link estimation method of a Wi-Fi7 chip scheme wireless access point. The method is applied to a high-pass PEBBLE series chip and comprises the steps of decomposing a radio frequency link into functional units, including a public radio frequency matching module, a filter module, a radio frequency front end module and an antenna module, and isolating the electrical characteristics of each hardware unit, and collecting quantization parameters of the functional units in a 5G frequency band, wherein the quantization parameters comprise attenuation values of each transmitting link, attenuation values of each receiving link, multi-link operation isolation, total radiation power budget, omnidirectional sensitivity budget, high-temperature environment performance degradation values and mass production consistency deviation values, and the quantization parameters are used for constructing a multidimensional evaluation system. The invention realizes the radical breakthrough of the design evaluation paradigm by establishing the modularized decomposition and multidimensional parameter fusion mechanism of the radio frequency link.

Inventors

  • LIU CHUNLIANG
  • XU JINGPEI
  • Bai tengfei
  • SUN HAILONG
  • CAI HONGXIA

Assignees

  • 太仓市同维电子有限公司

Dates

Publication Date
20260505
Application Date
20260122

Claims (10)

  1. 1. A5G frequency band radio frequency link estimation method of a Wi-Fi7 chip scheme wireless access point is characterized by being applied to a high-pass PEBBLE series chip, and comprises the following steps: Decomposing the radio frequency link into functional units, wherein the functional units comprise a public radio frequency matching module, a filter module, a radio frequency front-end module and an antenna module, and are used for isolating the electrical characteristics of each hardware unit; Collecting quantization parameters of the functional unit in a 5G frequency band, wherein the quantization parameters comprise an attenuation value of each transmitting link, an attenuation value of each receiving link, a multi-link operation isolation degree, a total radiation power budget, an omnidirectional sensitivity budget, a high-temperature environment performance degradation value and a mass production consistency deviation value, and the quantization parameters are used for constructing a multidimensional assessment system; filling the quantized parameters into a radio frequency link estimation table, wherein the radio frequency link estimation table comprises a reference parameter column and a proposal parameter column, and is used for realizing scheme transverse comparison analysis; And according to the difference value of the total radiation power budget and the omnidirectional sensitivity budget in the radio frequency link estimation table, directionally optimizing the radio frequency front-end module selection or the PCB layout for identifying the design weak links.
  2. 2. The method for estimating a 5G frequency band radio frequency link of a Wi-Fi7 chip scheme wireless access point according to claim 1, wherein the common radio frequency matching module comprises an equivalent series resistance and a quality factor of an impedance matching element, the filter module comprises an insertion loss index of a second-order filter of a receiving end, the radio frequency front-end module comprises a gain index and a linearity index, and the antenna module comprises an efficiency parameter and a radiation characteristic parameter.
  3. 3. The method for estimating a 5G band radio frequency link of a Wi-Fi7 chip scheme wireless access point of claim 1, wherein the attenuation value of each transmit link is measured at +5dbm input power, the attenuation value of each receive link comprises a link noise figure before a low noise amplifier, the measurement bandwidth covers 2402MHz to 2482MHz, and the multi-link operation isolation measures in-band blocking interference transmitted concurrently in the same band through a dual port network analyzer.
  4. 4. The method for estimating a 5G band radio frequency link of a Wi-Fi7 chip scheme wireless access point of claim 1, wherein the total radiated power budget field integrates an EHT mode power spectral density template of an IEEE 802.11be protocol, and the omnidirectional sensitivity budget field is embedded in a receiver dynamic range model to support carrier-to-interference-plus-noise ratio calculation of 1024 subcarriers.
  5. 5. The method for estimating a 5G band radio frequency link of a Wi-Fi7 chip scheme wireless access point of claim 1, wherein the EHT mode power spectral density template defines a transmit power up to standard threshold of 22.18dBm and a symbol error rate of 10e -5 for an EHT40MHz MCS13 mode, and the omnidirectional sensitivity budget defines a receive sensitivity threshold of-95.87 dBm for an EHT20MHz MCS0 mode.
  6. 6. The method for estimating the 5G frequency band radio frequency link of the Wi-Fi7 chip scheme wireless access point according to claim 1, wherein the high-temperature environment performance degradation value is obtained by measuring parameter drift of a radio frequency power amplifier after a +85 ℃ incubator continuously works for 2 hours, and the mass production consistency deviation value is obtained by counting standard deviation and process capability indexes of a plurality of batches of samples.
  7. 7. The method for estimating a 5G band radio frequency link of a Wi-Fi7 chip scheme wireless access point of claim 1, wherein the directional optimization comprises the rule of adding a gold-plated copper shield between a radio frequency front end module and a baseband chip when the multi-link operation isolation is smaller than-52 dB, and adjusting a series inductance value of a pi-type matching network when a receiving link attenuation value is larger than-1.58 dB.
  8. 8. The method for estimating a 5G band radio frequency link of a Wi-Fi7 chip scheme wireless access point of claim 1, further comprising the step of generating a combined list of compatible devices, wherein the combined list verifies that the third-order intermodulation products of the radio frequency front-end module and the filter are lower than 15dB of the noise floor through a double-tone test, and marks the operating temperature range and the supply voltage tolerance.
  9. 9. The method for estimating a 5G band radio frequency link of a Wi-Fi7 chip scheme wireless access point of claim 1, wherein the variable evaluation is performed before the quantization parameter is acquired, and the variable evaluation models the influence of the radio frequency trace length on the attenuation value of the transmitting link through a scattering parameter matrix, wherein each 0.1mm increase in microstrip line width results in a change in characteristic impedance of 2Ω.
  10. 10. The method for estimating a 5G band radio frequency link of a Wi-Fi7 chip scheme wireless access point of claim 1, wherein for NLOS propagation scenarios, a 3dB rayleigh fading compensation margin is added to the total radiation power budget, the compensation margin being obtained by calculation of a multipath fading model.

Description

5G frequency band radio frequency link estimation method of Wi-Fi7 chip scheme wireless access point Technical Field The invention relates to the technical field of radio frequency design of wireless access points, in particular to a 5G frequency band radio frequency link estimation method of a Wi-Fi7 chip scheme wireless access point. Background In the design of a 5G frequency band Wi-Fi7 wireless access point based on a high-pass PEBBLE series chip, radio frequency performance evaluation is highly dependent on cooperative optimization of front-end device type selection and PCB layout. The traditional method adopts a distributed simulation strategy, such as radio frequency link simulation, impedance matching simulation and thermodynamic simulation, which are separately executed, so that the design parameters are in island characteristics: On one hand, the dispersion of devices caused by multi-physical field coupling effect such as power amplifier parameter drift caused by high-temperature environment and mass production process cannot be uniformly quantified and characterized. On the other hand, there is a systematic deviation between the simulation data and the actual hardware test results, typically an MLO isolation simulation error of >8dB. The fragmentation evaluation mode forces engineers to iterate prototype verification repeatedly, not only prolongs the development period, but also greatly reduces the positioning efficiency of the design weak links because the dynamic coupling of the TRP/TIS budget under the key index such as the EHT mode is not modeled. The technical problem provided by the invention is how to construct an integrated radio frequency link evaluation method, and the problem that design deviation caused by physical field fracture is unquantifiable is solved through a multidimensional parameter coupling mechanism. Disclosure of Invention The disclosure provides a 5G frequency band radio frequency link estimation method of a Wi-Fi7 chip scheme wireless access point, which aims to overcome at least one defect existing in the prior art. In order to achieve the above purpose, the technical scheme disclosed by the invention is as follows: According to one aspect of the present disclosure, there is provided a method for estimating a 5G band radio frequency link of a Wi-Fi7 chip scheme wireless access point, applied to a high-pass PEBBLE series chip, including the steps of: Decomposing the radio frequency link into functional units, wherein the functional units comprise a public radio frequency matching module, a filter module, a radio frequency front-end module and an antenna module, and are used for isolating the electrical characteristics of each hardware unit; Collecting quantization parameters of the functional unit in a 5G frequency band, wherein the quantization parameters comprise an attenuation value of each transmitting link, an attenuation value of each receiving link, a multi-link operation isolation degree, a total radiation power budget, an omnidirectional sensitivity budget, a high-temperature environment performance degradation value and a mass production consistency deviation value, and the quantization parameters are used for constructing a multidimensional assessment system; filling the quantized parameters into a radio frequency link estimation table, wherein the radio frequency link estimation table comprises a reference parameter column and a proposal parameter column, and is used for realizing scheme transverse comparison analysis; And according to the difference value of the total radiation power budget and the omnidirectional sensitivity budget in the radio frequency link estimation table, directionally optimizing the radio frequency front-end module selection or the PCB layout for identifying the design weak links. Furthermore, the common radio frequency matching module comprises an equivalent series resistance and a quality factor of the impedance matching element, the filter module comprises an insertion loss index of a second-order filter at a receiving end, the radio frequency front-end module comprises a gain index and a linearity index, and the antenna module comprises an efficiency parameter and a radiation characteristic parameter. Further, the attenuation value of each transmitting link is measured at +5dBm input power, the attenuation value of each receiving link comprises a link noise coefficient before a low noise amplifier, the bandwidth is measured to cover 2402MHz to 2482MHz, and the multi-link operation isolation measures in-band blocking interference transmitted concurrently in the same frequency band through a dual-port network analyzer. Still further, the total radiated power budget field integrates an EHT mode power spectral density template of the IEEE 802.11be protocol, and the omnidirectional sensitivity budget field is embedded in a receiver dynamic range model, supporting carrier to interference plus noise ratio calculation of 1024 subcarrier