Terminal Feedback MAC CE for Configured Grant Activation
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Solution Overview
Problem
In wireless communication systems, particularly in new radio (NR) systems, terminal devices face challenges in consistently feeding back activation or release states to network devices, as existing methods lack clear indication mechanisms for distinguishing between configured grant (CG) configurations and states, leading to potential inconsistencies.
Innovation Solution
The implementation uses first indication information in confirmation MAC CE (feedback MAC CE) or resources to differentiate between feedback on CG configuration activation or release and state activation or release, ensuring consistency between network and terminal devices through logical channel identities, bits, or resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device feeds back activation or release states without clear indication mechanisms, then the feedback process is simple, but inconsistencies occur between network device and terminal device on CG configuration or state activation/release
Solution Approach 1:
The patent segments the feedback indication by introducing a first indication information field that distinguishes between CG configuration feedback and state feedback. This segmentation allows the terminal device to clearly indicate whether the feedback corresponds to CG configuration activation/release or state activation/release, thereby resolving the inconsistency issue while maintaining manageable complexity through structured differentiation.
Solution Approach 2:
The first indication information acts as an intermediary element in the feedback MAC CE that mediates between the terminal device's internal state and the network device's interpretation. This intermediary field enables unambiguous communication of feedback intent without requiring complex external coordination mechanisms.
2Reliability
If the terminal device uses separate feedback mechanisms for CG configuration and state, then consistency is achieved, but signaling overhead increases
Solution Approach 1:
The patent merges the feedback for both CG configuration and state into a single feedback MAC CE structure, using a first indication information field to differentiate the feedback type. This merging approach achieves the reliability of separate feedback mechanisms while minimizing signaling overhead by consolidating multiple feedback indications into one efficient message format.
Solution Approach 2:
The feedback MAC CE is designed with multi-functionality, capable of indicating both CG configuration activation/release and state activation/release through the first indication information field. This universal structure eliminates the need for separate dedicated feedback messages for each type, thereby reducing overall signaling overhead while maintaining comprehensive feedback capability.
Data Source
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AI summary
Wireless communication methods, a terminal device, and a network device are provided. A wireless communication method includes the following. A terminal device receives a first command transmitted by a network device. The first command is used for activating or releasing a first configured grant (CG) configuration or a first state, where the first state corresponds to at least one CG configuration. The terminal device transmits a feedback media access control (MAC) control element (CE) of the first command to the network device. The feedback MAC CE contains first indication information, where the first indication information is used for indicating whether the feedback MAC CE is feedback of the terminal device on activation or release of a CG configuration and/or feedback of the terminal device on activation or release of a state. Alternatively, a resource carrying the feedback MAC CE is used for indicating whether the feedback MAC CE is feedback of the terminal device on activation or release of a CG configuration and/or feedback of the terminal device on activation or release of a state.