EMLSR Multi-Link Listening Switch for High-Order Groupcast Frames
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication protocols for multi-link devices (MLDs) in enhanced multi-link single radio (EMLSR) mode are limited by frame reception capabilities, leading to difficulties in receiving groupcast frames with high order or multiple spatial streams due to modulation and coding scheme, spatial stream, and bandwidth limitations.
Innovation Solution
Implementing a first listening operation with enhanced receiving capabilities for multi-link devices to receive groupcast frames, allowing for switching between different listening modes based on specific indications and timing, ensuring proper reception of high-order or multiple spatial stream frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing listening operation protocols are used for multi-link devices in EMLSR mode, then the device can operate with standard frame reception capabilities, but the device cannot receive groupcast frames with high order or multiple spatial streams due to modulation and coding scheme, spatial stream, and bandwidth limitations
Solution Approach 1:
The patent implements dynamic listening operations that can switch between different receiving capabilities based on the type of frame being received. The multi-link device can transition from a first listening operation with basic receiving capability to a second listening operation with enhanced receiving capability when high-order or multi-spatial stream groupcast frames are detected, allowing the system to adapt its reception parameters dynamically rather than being fixed at a single capability level
Solution Approach 2:
The patent changes key reception parameters including modulation and coding scheme (MCS), spatial stream configuration, and bandwidth settings based on the frame type. When receiving high-order or multi-spatial stream groupcast frames, the device adjusts these parameters to match the enhanced requirements, transforming the reception capability from standard to high-performance mode through parameter modification
2Reliability
If the multi-link device switches between different listening modes based on specific indications and timing, then the device can receive high-order or multiple spatial stream frames reliably, but the device complexity increases due to multiple listening modes and switching mechanisms
Solution Approach 1:
The patent employs preliminary actions by sending indication information in advance before the actual groupcast frame transmission. The access point transmits signals that notify the multi-link device of upcoming high-order or multi-spatial stream frames, allowing the device to proactively switch to the appropriate listening mode before the frame arrives, thereby avoiding the need for complex real-time detection and switching during the actual reception
3Ease of manufacture
If existing listening operation is used, then the protocol implementation is simple, but the device cannot receive groupcast frames normally in special scenarios due to frame reception capability limitations
Solution Approach 1:
The patent creates a universal listening operation framework that can handle multiple frame types and scenarios. The multi-link device is equipped with both a first listening operation for standard frames and a second listening operation for high-order or multi-spatial stream frames, allowing a single device design to universally support both simple and complex reception scenarios without requiring separate specialized hardware for each case
Data Source
AI summary
A communication method, which is applied to a first multi-link device (MLD) operating in an enhanced multi-link single radio (EMLSR) mode and includes: performing, by the first MLD, a second listening operation, where the second listening operation includes: the first MLD performing a clear channel assessment (CCA) and receiving an initial control frame of a frame exchange sequence transmitted by an access point (AP) MLD through an affiliated station that operates on an EMLSR link in an awake state; and performing, by the first MLD, a first listening operation, where the first listening operation is used for a first station on the first MLD to receive a groupcast frame using a first receiving capability. The first MLD switches from the second listening operation to the first listening operation at a target time or before the target time.