UE SPS Release Indication for V2X Resource Management
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Solution Overview
Problem
In wireless communication systems, particularly in LTE-based V2X communication, there is a need to efficiently manage semi-persistent scheduling (SPS) resources for transmitting small-sized messages, as existing methods face challenges in reducing control channel overhead and accurately transmitting UE assistance information for resource allocation.
Innovation Solution
A method and apparatus for a user equipment (UE) to receive multiple SPS configurations from an evolved NodeB (eNB) and transmit UE assistance information, including an SPS release indication, to effectively manage and release SPS resources for each logical channel, optimizing resource allocation and reducing overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If semi-persistent scheduling is used to reduce control channel overhead for continuous small packet transmissions, then control channel overhead is reduced, but it becomes difficult to release SPS resources for individual logical channels
Solution Approach 1:
The patent segments the SPS resource management by introducing separate SPS configurations for different logical channels. Each SPS configuration can be independently released by transmitting an SPS release indication for that specific logical channel, allowing granular control over SPS resource allocation and release without affecting other logical channels.
Solution Approach 2:
The patent implements a feedback mechanism where the UE transmits SPS release indications to the eNB when SPS resources are no longer needed for a logical channel. This feedback loop enables the network to dynamically adjust and release SPS configurations based on actual transmission needs, optimizing resource utilization.
2Adaptability or versatility
If multiple SPS configurations are transmitted for multiple logical channels, then resource allocation flexibility is improved, but UE assistance information transmission complexity increases
Solution Approach 1:
The patent divides the UE assistance information into separate SPS release indications for each logical channel. This segmentation allows the UE to report status changes for individual logical channels independently, reducing the overall complexity compared to reporting all logical channels in a single aggregated message.
Data Source
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AI summary
User equipment (UE) can transmit UE support data for semi-persistent scheduling (SPS) to an evolved NodeB (eNB) in order to effectively allocate SPS resources for vehicle-to-everything (V2X) communication. The release of SPS can be directed by means of the UE support data. More specifically, a terminal receives, from an eNB, a plurality of SPS configurations for a plurality of logical channels, and transmits, to the eNB, UE support data comprising an SPS release directive for any one logical channel from among the plurality of logical channels.