Uplink Channel Mode Signaling for Subchannel Interference Shielding
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Solution Overview
Problem
Existing wireless network technologies have limited flexibility and scalability in radio channel modes due to the use of only two bits in a frame structure to determine supported modes, leading to reduced transmission rates and anti-interference capabilities, especially during uplink transmissions.
Innovation Solution
A method and apparatus that extend the determination of radio channel modes by using additional signaling fields to identify supported modes, allowing for increased flexibility and scalability by shielding interfered subchannels, thereby enhancing bandwidth utilization and interference resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only two bits in frame structure are used to determine radio channel mode, then device complexity is reduced, but adaptability and versatility of puncturing technology are limited
Solution Approach 1:
The patent transitions from using only 2 bits (single dimension) to using an N-bit bitmap field where each bit corresponds to a specific puncturing pattern (adding another dimension of representation). This allows 2^N possible channel modes instead of limited to 4 modes from 2 bits, dramatically increasing adaptability while maintaining manageable signaling complexity through structured bitmapping.
Solution Approach 2:
The patent changes the parameter of channel mode indication from a fixed 2-bit field to a configurable N-bit field where N can be adjusted based on requirements. This parameter change allows the system to support variable numbers of puncturing patterns (from 4 to potentially hundreds), enabling flexible adaptation to different wireless scenarios without rigid structural constraints.
2Reliability
If puncturing technology is applied to shield interfered channels, then anti-interference capability is improved, but transmission rate may be reduced due to bandwidth fallback
Solution Approach 1:
The patent implements dynamic channel mode selection where the terminal can adaptively choose from multiple puncturing patterns based on real-time interference conditions. Instead of static fallback to single-channel mode, the system dynamically selects optimal puncturing patterns from N available options, maintaining high transmission rates on non-interfered channels while shielding only affected subchannels.
Solution Approach 2:
The patent applies puncturing selectively to specific subchannels experiencing interference rather than forcing complete bandwidth fallback. Each bit in the N-bit bitmap corresponds to a specific puncturing pattern, enabling localized shielding of interfered channels while preserving transmission capacity on clean channels, thus maintaining overall high transmission rate while improving anti-interference capability.
3Productivity
If terminal channel mode is not limited in uplink transmission, then ease of operation is improved, but transmission rate and anti-interference capability are reduced
Solution Approach 1:
The patent implements a feedback mechanism where the access device sends indication information to the terminal specifying which channel mode to use for uplink transmission. The terminal receives this feedback and complies with the indicated mode, ensuring optimal uplink performance. This feedback loop maintains ease of operation for the terminal while achieving high transmission rates and anti-interference capability through centralized mode management.
Data Source
AI summary
A method includes receiving first signaling sent by a terminal and determining a radio channel mode supported by the terminal, where the first signaling includes a first field, and the first field indicates the radio channel mode supported by the terminal; and sending second signaling to the terminal, where the second signaling includes a second field, a target channel mode is indicated by using the second field, the second signaling indicates the terminal to use the target channel mode when the terminal sends a packet, the second signaling is sent when it is detected that there is a subchannel subject to interference on an operating channel, and the target channel mode is a mode in the radio channel mode supported by the terminal.