Wireless SPS Resource Alignment for Non-Integer Packet Periodicity
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Solution Overview
Problem
Existing wireless communication systems face misalignment between preconfigured semi-persistent scheduling (SPS) resources and non-integer periodicity of packet arrivals, leading to increased transmission delay and inefficiency, particularly in services with periodicities like 60 frames per second (FPS) video streaming.
Innovation Solution
The technology aligns SPS resources with non-integer periodicity by configuring an offset and using formulas to determine time domain locations based on first signaling, such as RRC, MAC CE, or DCI, to adjust SPS/CG configurations for downlink and uplink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If SPS resources are preconfigured with fixed periodicity, then resource allocation is simple and deterministic, but misalignment occurs with non-integer periodicity packet arrivals causing increased transmission delay
Solution Approach 1:
The patent pre-calculates and configures multiple candidate time domain locations for SPS resources before actual packet arrival. The network node determines multiple possible time domain locations based on the first information (periodicity parameter) and configures them in advance, allowing the wireless device to select the most appropriate location that aligns with non-integer periodicity packet arrivals, thereby reducing transmission delay while maintaining manageable configuration complexity
Solution Approach 2:
The patent introduces flexibility into the SPS configuration by allowing multiple time domain locations to be configured instead of a single fixed location. The wireless device can dynamically select from these pre-configured locations based on actual packet arrival timing, enabling adaptation to non-integer periodicity while keeping the overall system manageable through pre-planned options
2Productivity
If SPS resources are configured to match non-integer periodicity, then transmission efficiency improves, but configuration and determination of time domain locations becomes more complex
Solution Approach 1:
The patent changes the periodicity parameter from a single fixed value to multiple candidate values that can accommodate non-integer periodicity. By configuring multiple time domain locations corresponding to different periodicity interpretations, the system can select the most appropriate one to match actual packet arrival patterns, thereby improving transmission efficiency while managing complexity through parameter variation
Solution Approach 2:
The network node performs preliminary calculation and configuration of multiple candidate time domain locations based on the periodicity parameter before actual data transmission. This pre-computation approach allows the system to handle non-integer periodicity efficiently during operation without real-time complex calculations, improving transmission efficiency while keeping configuration manageable
Data Source
AI summary
Methods and systems for techniques for configuring parameters in wireless communications are disclosed. In an implementation, a method of wireless communication includes receiving, by a wireless device, from a network node, a first signaling including a first information associated with semi-persistent scheduling (SPS) resources for an SPS configuration, and determining, by the wireless device, one or more time domain locations of SPS resources for the SPS configuration based on the first information.