Uplink Padding for Transmission Gap Creation in Wireless Communications
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Solution Overview
Problem
Existing wireless communication systems face challenges in creating transmission gaps without degrading uplink performance, as conventional methods can lead to perceived wastage of uplink radio resources, resulting in data rate reduction or connection drops.
Innovation Solution
A communications apparatus with RF and baseband signal processing devices, along with a processor, determines whether to transmit padding instead of uplink data at predetermined times based on gap-creation criteria, such as power consumption or coexistence interference, to create transmission gaps without affecting uplink performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If transmission gaps are created by not transmitting uplink data at predetermined times, then power consumption is reduced and coexistence interference is avoided, but uplink performance degrades due to perceived wastage of radio resources
Solution Approach 1:
The patent introduces padding data as an intermediary element. Instead of directly creating transmission gaps by stopping uplink data transmission (which causes performance degradation), the system transmits padding data that serves as a mediator to create the desired transmission gap while maintaining the appearance of normal transmission to the network, thus avoiding uplink performance degradation while achieving power savings and interference avoidance.
2Object-affected harmful factors
If transmission gaps are created by suspending uplink data transmission, then coexistence interference with other radio access technologies is reduced, but uplink data rate is reduced
Solution Approach 1:
Padding data acts as an intermediary that enables transmission gap creation without directly suspending uplink data transmission. The padding data maintains the transmission stream active while effectively creating gaps for coexistence with other radio access technologies, thus reducing coexistence interference while maintaining uplink data rate.
3Reliability
If padding is transmitted instead of uplink data to create transmission gaps, then uplink performance is maintained, but uplink radio resources are wasted
Solution Approach 1:
The padding data serves as a deceptive intermediary that maintains uplink performance by keeping the transmission stream active and preventing network from reducing data rates, while simultaneously creating the desired transmission gaps. The resource 'waste' is minimal compared to the benefit of maintaining overall uplink performance and enabling coexistence with other radio access technologies.
Data Source
AI summary
A communications apparatus includes a first radio frequency (RF) signal processing device, a first baseband signal processing device and a processor. The first RF signal processing device transceives a plurality of RF signals to and from a peer communications apparatus to communicate with the peer communications apparatus in compliance with a first Radio Access Technology (RAT) and processing the RF signals. The first baseband signal processing device processes a plurality of baseband signals corresponding to the RF signals. The processor obtains an uplink scheduling indicating a predetermined time assigned by the peer communications apparatus to transmit uplink data from the baseband signals, determines whether to transmit the uplink data at the predetermined time according to a gap-creation criterion, and transmits padding instead of the uplink data to the peer communications apparatus at the predetermined time when the gap-creation criterion is satisfied.