Macro and Micro Discontinuous Transmission for UL Latency
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Solution Overview
Problem
Existing wireless communication systems face challenges with high latency and increased power consumption due to periodic scheduling requests for uplink transmissions, which are independent of UL traffic activity, leading to inefficient use of resources.
Innovation Solution
Implementing a discontinuous transmission (DTX) configuration that allows UEs to enter a sleep state when not actively communicating, with dynamic allocation of transmission opportunities based on network load, scheduling conditions, and traffic profiles, enabling efficient battery use and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic scheduling requests are transmitted independently of UL traffic activity, then UL transmission opportunities are ensured, but latency increases and power consumption increases
Solution Approach 1:
The patent implements dynamic DTX configurations where the network can adjust the active duration and monitoring requirements based on UL traffic activity. When traffic activity is high, the system dynamically increases monitoring frequency and active duration to reduce latency, while maintaining reliability. This resolves the contradiction by making the periodic request system adaptive rather than static.
Solution Approach 2:
The system changes key parameters such as active duration, monitoring frequency, and DTX cycle length based on traffic conditions. When UL activity is detected, parameters are adjusted to provide more frequent transmission opportunities and reduce latency. When activity is low, parameters are relaxed to reduce power consumption, thus dynamically balancing reliability and latency.
2Reliability
If periodic scheduling requests are transmitted independently of UL traffic activity, then UL transmission opportunities are ensured, but power consumption increases
Solution Approach 1:
The patent implements dynamic DTX configurations where the network can adjust the active duration and monitoring requirements based on UL traffic activity. When traffic activity is high, the system dynamically increases monitoring frequency and active duration to reduce latency, while maintaining reliability. This resolves the contradiction by making the periodic request system adaptive rather than static.
Solution Approach 2:
The system changes key parameters such as active duration, monitoring frequency, and DTX cycle length based on traffic conditions. When UL activity is detected, parameters are adjusted to provide more frequent transmission opportunities and reduce latency. When activity is low, parameters are relaxed to reduce power consumption, thus dynamically balancing reliability and latency.
3Reliability
If monitoring is performed when activity is low, then scheduling requests are captured, but processing complexity increases
Solution Approach 1:
The patent applies partial monitoring action by adjusting the monitoring duty cycle based on traffic activity. When activity is low, the system performs partial monitoring at reduced frequency rather than continuous monitoring, capturing essential scheduling requests while significantly reducing processing complexity. This resolves the contradiction by applying just enough monitoring action to maintain reliability without excessive processing.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A wireless device may receive during an active duration, an indication of an opportunity to request uplink (UL) transmission. The wireless device may identify an opportunity to request UL transmission based at least in part on the indication. In some cases, the active duration may be a discontinuous transmission (DTX) configuration. The wireless device may then transmit on the UL resources during the opportunity to request UL transmission.