Uplink Resource Muting Patterns for SBFD Interference Control
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Solution Overview
Problem
Wireless communications systems face challenges such as signal attenuation, interference, inefficient resource utilization, and reliability issues, particularly in complex and dynamic environments, necessitating improvements in signal transmission and reception efficiency.
Innovation Solution
Implementing subband full duplex (SBFD) communication techniques with configurable uplink resource muting patterns to mitigate cross-link interference and optimize resource utilization, allowing simultaneous transmission and reception on different sub-bands within a single communication channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink transmissions are allowed in all time resources, then uplink throughput is maximized, but cross-link interference with downlink receptions increases
Solution Approach 1:
The patent segments time resources into different types (flexible uplink, downlink, and SBFD symbols) and applies different transmission rules to each segment. This allows the system to divide the time domain into manageable portions where uplink transmissions are permitted in some segments while restricted in others, thereby achieving both high throughput and interference mitigation
Solution Approach 2:
The patent implements periodic SBFD patterns where uplink resource muting is applied in a periodic manner. By configuring periodic muting patterns, the system creates regular intervals where uplink transmissions are suppressed to protect downlink receptions, while maintaining uplink activity in non-muting periods to preserve throughput
2Reliability
If uplink resource muting is applied to mitigate interference, then downlink reception quality improves, but uplink resource utilization decreases
Solution Approach 1:
The patent introduces dynamic and flexible uplink resource muting configurations that can be adapted based on traffic conditions and interference levels. The muting pattern is not fixed but can be adjusted dynamically to balance interference mitigation and resource utilization, allowing the system to optimize performance under varying conditions
Solution Approach 2:
The patent changes the parameters of uplink transmissions by applying muting patterns that selectively suppress transmissions in certain time resources while allowing them in others. By adjusting the muting pattern parameters (such as periodicity, offset, and duration), the system can control the trade-off between interference reduction and resource utilization
3Productivity
If subband full duplex is implemented to enable simultaneous transmission and reception, then spectral efficiency increases, but system complexity increases
Solution Approach 1:
The patent segments the frequency spectrum into different subbands and assigns different directions (uplink or downlink) to each subband within the same time slot. This frequency-domain segmentation enables simultaneous transmission and reception without requiring complex full-duplex RF circuitry, thereby achieving spectral efficiency gains with manageable complexity
Solution Approach 2:
The patent transitions from time-division duplexing to frequency-division duplexing within the same time slot by implementing subband full duplex. This dimensional change from time to frequency domain allows simultaneous uplink and downlink operations, improving spectral efficiency while avoiding the complexity of true simultaneous transmission and reception on the same frequency
4Productivity
If flexible slot configurations are used to adapt to varying traffic demands, then resource efficiency improves, but scheduling complexity increases
Solution Approach 1:
The patent implements dynamic slot configurations that can be flexibly adjusted based on real-time traffic demands. The system can dynamically change the number and type of symbols within a slot (flexible, downlink, or SBFD symbols) to optimize resource allocation, achieving high resource efficiency while maintaining manageable scheduling complexity through standardized configuration mechanisms
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for wireless communication at a user equipment (UE), comprising generally including receiving signaling of a serving cell configuration, wherein the serving cell configuration indicates at least one uplink resource muting pattern and transmitting physical uplink shared channel (PUSCH) transmissions in accordance with the uplink resource muting pattern.