Semi-Persistent Scheduling Confirmation for Adaptive V2X Resource Allocation
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing multiple carrier aggregations and semi-persistent scheduling, particularly in scenarios involving vehicular communication services like V2X, where dynamic changes in message size, periodicity, and timing require enhanced resource allocation mechanisms.
Innovation Solution
The implementation of multiple semi-persistent scheduling (SPS) configurations with distinct SPS RNTIs and enhanced SPS confirmation mechanisms, allowing for parallel activation and release of SPS processes tailored to different traffic types, such as V2X services, to optimize resource allocation and reduce battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple semi-persistent scheduling configurations are implemented with distinct SPS RNTIs, then resource allocation flexibility and spectral efficiency are improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent segments the SPS configuration by introducing distinct SPS RNTIs for different SPS processes. Each SPS RNTI identifies a specific SPS configuration, allowing the UE to separately manage and process different SPS instances. This segmentation enables parallel activation and release of SPS processes, improving resource allocation flexibility while maintaining manageable complexity through structured organization.
Solution Approach 2:
The patent implements a universal SPS confirmation mechanism that works across multiple SPS processes identified by different SPS RNTIs. The same confirmation procedure and resource allocation methods are applied universally to all SPS configurations, allowing the system to handle diverse traffic types (including V2X services) with a unified approach, thereby improving spectral efficiency without proportionally increasing processing complexity.
2Productivity
If semi-persistent scheduling is used for V2X services, then resource allocation efficiency is improved, but adaptability to dynamic traffic changes deteriorates
Solution Approach 1:
The patent introduces dynamic control mechanisms for SPS configurations through separate SPS RNTIs. Each SPS process can be independently activated, modified, or released based on traffic conditions. The network can dynamically adjust SPS parameters for different services by sending targeted DCIs associated with specific SPS RNTIs, enabling the system to adapt to changing traffic demands while maintaining efficient resource allocation through persistent scheduling.
Solution Approach 2:
The patent implements feedback mechanisms where the UE sends SPS confirmations to the network for each SPS process. This feedback allows the network to monitor the status and performance of different SPS configurations and adjust resource allocation accordingly. The feedback loop enables continuous optimization of resource allocation efficiency while adapting to traffic changes, particularly for V2X services with varying message sizes and periodicity.
3Use of energy by moving object
If SPS configurations are aligned with varying traffic demands, then power consumption is reduced, but complexity of resource management increases
Solution Approach 1:
The patent segments resource management into distinct SPS processes identified by different SPS RNTIs. Each SPS process can be independently managed, activated, or released based on specific traffic requirements. This segmentation allows the UE to focus processing efforts on active SPS processes only, reducing overall power consumption while maintaining manageable complexity through modular organization of resource management tasks.
Solution Approach 2:
The patent implements self-service mechanisms where the UE autonomously manages SPS confirmations and resource allocations for each SPS process. The UE can independently handle SPS activations and releases based on received DCIs associated with specific SPS RNTIs, reducing the need for complex centralized control and enabling more efficient power management through autonomous decision-making at the UE level.
Data Source
AI summary
A wireless device may receive configuration information for a plurality of periodic resource allocations. A downlink control information (DCI) may be received comprising an indication of activation or release of at least one periodic resource allocation of the plurality of periodic resource allocations. After receiving the DCI, a medium access control (MAC) subheader comprising a logical channel identifier (LCID) that identifies a confirmation MAC control element may be sent. The confirmation MAC control element may comprise a plurality of fields, and at least one of the plurality of fields may indicate receipt of the indication of activation or release by using a same value to indicate either the activation or the release.