MAC PDU Generation with Dynamic PBR Selection for Wireless Grants
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Solution Overview
Problem
In wireless communication systems, existing methods fail to efficiently manage Medium Access Control Protocol Data Units (MAC PDUs) with multiple configured grants, leading to challenges in latency and resource utilization, particularly in scenarios with varying traffic patterns.
Innovation Solution
A method for generating MAC PDUs by prioritizing logical channels based on Prioritized Bit Rate (PBR) values associated with activated grants, allowing for dynamic adjustment of PBR values in response to changes in traffic patterns, and transmitting assistance information to the network for grant activation or reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple configured grants are used to handle varying traffic patterns, then resource utilization and latency performance are improved, but the complexity of MAC PDU generation and Logical Channel Prioritization increases
Solution Approach 1:
The patent implements dynamic selection of PBR values based on activated grants. The UE determines which grant is activated and dynamically selects the corresponding PBR value from multiple configured PBR values. This dynamic adaptation allows the system to handle varying traffic patterns efficiently while maintaining manageable complexity through structured selection rules.
Solution Approach 2:
The patent changes the parameter selection approach by configuring multiple PBR values associated with different grants and dynamically selecting among them based on activation state. This parameter change mechanism enables flexible resource allocation without requiring complete reconfiguration of the MAC PDU generation process, thus improving productivity while controlling complexity.
2Adaptability or versatility
If multiple PBR values are configured for different logical channels, then adaptability to varying traffic patterns is improved, but the difficulty of managing and selecting appropriate PBR values increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple PBR values and their associations with specific grants before actual data transmission. The network configures the UE with multiple PBR values and their corresponding grant relationships in advance. When a grant is activated, the UE simply selects the pre-configured PBR value associated with that grant, eliminating the need for complex real-time analysis and reducing selection difficulty.
Solution Approach 2:
The patent implements feedback through the activation command mechanism. The network monitors traffic patterns and grant utilization, then sends activation commands to enable specific grants and their associated PBR values. This feedback loop allows the system to adapt to varying traffic patterns while simplifying PBR selection, as the network's activation decisions are based on its own traffic pattern analysis rather than requiring the UE to make complex selections.
3Loss of time
If dynamic adjustment of PBR values is implemented based on traffic patterns, then latency is reduced, but the complexity of grant management and activation increases
Solution Approach 1:
The patent implements dynamic adjustment of PBR values based on activated grants. When traffic patterns change and a different grant becomes activated, the UE dynamically switches to the PBR value associated with the activated grant. This dynamic adjustment reduces latency by ensuring the appropriate PBR value is used for current traffic conditions without requiring complex real-time optimization algorithms.
Solution Approach 2:
The patent applies self-service through the automated grant activation mechanism. The network sends activation commands that automatically enable the appropriate grant and its associated PBR value based on observed traffic patterns. This self-service approach reduces latency by quickly activating appropriate grants without manual intervention, while the structured activation command format keeps management complexity manageable.
Data Source
AI summary
The present invention relates to a method of generating a Medium Access Control Protocol Data Unit (MAC PDU) by a UE in a wireless communication system. In particular, the method includes the steps of: receiving configuration information related to multiple logical channels; receiving information related to multiple configured grants; generating the MAC PDU by performing a Logical Channel Prioritization (LCP) for the multiple logical channels based on a PBR value related to an activated grant; and transmitting the MAC PDU to a network.