Service Set Compression Using CRC for Wake-Up Frames
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently compressing basic service set identification (BSSID) and service set identifier (SSID) for low power wake-up receivers, leading to power consumption issues and suboptimal channel conditions, especially with the use of multiple antennas and varying channel conditions.
Innovation Solution
The implementation of a service set compression system using cyclic redundancy code (CRC) for compressing BSSID and SSID, along with optimized cyclic shift diversity (CSD) settings for the wake-up receiver (WUR) portion, which adjusts based on channel conditions, OOK pulse characteristics, and the number of transmit antennas to improve frequency selectivity and link performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If service set identification (BSSID/SSID) is transmitted in wake-up frames, then receiving devices can identify the access point, but power consumption increases and transmission time increases
Solution Approach 1:
The patent extracts only the essential identifying information from the full BSSID/SSID and transmits it in a compressed form within the wake-up frame. This allows receiving devices to identify the access point without transmitting the complete service set identification, thereby reducing power consumption while maintaining the ability to distinguish between different access points.
Solution Approach 2:
The patent applies different compression strategies based on local conditions - using full BSSID when uniqueness is required versus compressed representations when power efficiency is prioritized. The system adapts the identification information format according to the specific transmission context and channel conditions.
2Loss of information
If service set identification (BSSID/SSID) is transmitted in wake-up frames, then receiving devices can identify the access point, but transmission time increases
Solution Approach 1:
The patent extracts only the essential identifying information from the full BSSID/SSID and transmits it in a compressed form within the wake-up frame. This allows receiving devices to identify the access point without transmitting the complete service set identification, thereby reducing transmission time while maintaining the ability to distinguish between different access points.
3Device complexity
If fixed cyclic shift diversity (CSD) values are used for wake-up receiver, then implementation is simple, but frequency selectivity and link performance are suboptimal
Solution Approach 1:
The patent transitions from fixed CSD values to dynamic CSD selection based on channel conditions. The system adapts the cyclic shift values according to the detected channel state, number of transmit antennas, and OOK pulse characteristics, thereby optimizing frequency selectivity and link performance while maintaining reasonable implementation complexity through standardized adaptation rules.
Solution Approach 2:
The patent changes the CSD parameters dynamically based on channel conditions and transmission parameters. By adjusting the cyclic shift values according to the number of transmit antennas and channel characteristics, the system optimizes frequency diversity and link reliability without requiring complex adaptive algorithms.
4Reliability
If optimized CSD settings are implemented for wake-up receiver, then link performance and coverage area improve, but device complexity increases
Solution Approach 1:
The patent changes the CSD parameters dynamically based on channel conditions and transmission parameters. By adjusting the cyclic shift values according to the number of transmit antennas and channel characteristics, the system optimizes frequency diversity and link reliability without requiring complex adaptive algorithms.
Solution Approach 2:
The system implements feedback mechanisms where the wake-up receiver detects channel conditions and provides information back to the transmitter, enabling adaptive CSD selection. This feedback loop allows the system to optimize link performance based on actual channel state while maintaining manageable complexity through standardized feedback protocols.
5Adaptability or versatility
If standard wake-up frame format is used, then compatibility is maintained, but power consumption is higher than necessary
Solution Approach 1:
The patent extracts only the essential identifying information from the full BSSID/SSID and transmits it in a compressed form within the wake-up frame. This allows receiving devices to identify the access point without transmitting the complete service set identification, thereby reducing power consumption while maintaining the ability to distinguish between different access points.
Solution Approach 2:
The patent modifies the wake-up frame parameters by compressing the service set identification fields while maintaining the overall frame structure and compatibility with existing wake-up receiver implementations. This parameter optimization reduces transmission time and power consumption without sacrificing compatibility.
Data Source
AI summary
This disclosure describes systems, methods, and devices related to service set compression. A device may determine a wake-up frame comprising one or more fields, wherein the one or more fields indicate an action to be taken on a receiving device. The device may determine an identifier to be indicated in the wake-up frame. The device may determine a size of the identifier. The device may cause to compress the identifier forming a compressed output, wherein the identifier is compressed by applying a cyclic redundancy code (CRC) computation. The device may identify a portion of the compressed output. The device may cause to send the wake-up frame to a receiving device, wherein the wake-up frame comprises the portion of the compressed output based on the size of the identifier.