Group Common MAC CE for Coordinated SCell and BWP Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face inefficiencies in configuring resources for multiple access systems, particularly in managing secondary cells and bandwidth parts, which can lead to increased signaling overhead and resource mismanagement.
Innovation Solution
The method involves configuring radio resources by user equipment (UE) through group common medium access control (MAC) control elements (CE) for activating or deactivating secondary cells (SCells) and bandwidth parts (BWPs) across multiple UEs, using methods such as group common indices, bitmaps, or serial concatenation to ensure efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate MAC CE commands are used for each UE to activate/deactivate SCells, then each UE can be precisely controlled, but the signaling overhead increases
Solution Approach 1:
The patent merges the activation/deactivation control of SCells across multiple UEs into a single group common MAC CE command. The base station transmits one MAC CE that contains bitmap information for multiple UEs, where each UE identifies its relevant SCells through UE-specific configuration. This combining approach reduces the number of separate commands needed while maintaining precise control over each UE's SCell activation state.
Solution Approach 2:
The group common MAC CE is designed to serve multiple UEs simultaneously with a single transmission. The MAC CE structure includes universal bitmap fields that can indicate activation/deactivation states for SCells shared among multiple UEs, making the control mechanism universal rather than UE-specific. This multi-functionality reduces signaling overhead while preserving individual UE control through UE-specific SCell index configurations.
2Manufacturing precision
If individual SCell management is performed for each UE, then resource allocation accuracy is improved, but system efficiency decreases
Solution Approach 1:
The patent combines SCell management operations for multiple UEs into a single group common MAC CE transmission. By merging the control commands, the system maintains accurate resource allocation for each UE through UE-specific bitmap interpretations while improving system efficiency by reducing the total number of MAC CE transmissions and processing operations required across the network.
3Reliability
If multiple MAC CE commands are transmitted for SCell activation across multiple UEs, then control coverage is improved, but energy consumption increases
Solution Approach 1:
The patent merges SCell activation/deactivation commands for multiple UEs into a single group common MAC CE transmission. This reduces the total number of MAC CE messages transmitted over the air interface, thereby reducing network energy consumption for transmission and reception. The control coverage is maintained through UE-specific configuration that allows each UE to identify and process only its relevant activation/deactivation indicators within the group command.
Solution Approach 2:
The group common MAC CE serves as a universal control mechanism that simultaneously manages SCell activation across multiple UEs. This multi-functional approach ensures comprehensive control coverage for all configured UEs while minimizing energy consumption by eliminating redundant separate transmissions. Each UE derives its specific control information from the universal MAC CE structure through pre-configured UE-specific parameters.
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
A method and device for configuring a resource in a wireless communication system, disclosed in the present specification, may activate and/or deactivate SCells by means of a group common SCell activation/deactivation MAC CE.