Terminal Gap Activation Through RRC Reconfiguration for 5G Tasks
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Solution Overview
Problem
The increasing demand for wireless data traffic in 5G systems necessitates efficient operation of terminals through various gaps for tasks like measurement, MUSIM operation, and transmission power control, which existing technologies struggle to manage effectively.
Innovation Solution
A method and apparatus for configuring gaps in a terminal, involving the reception of SystemInformationBlock1 and RRCReconfiguration messages to determine specific subframes or slots for gaps based on gap information, using subcarrier spacing of active uplink bandwidth parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If various gaps are configured for terminal operations (measurement, MUSIM, power control), then terminal operation efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments gap configuration into multiple types (measurement gaps, MUSIM gaps, power control gaps) with distinct parameters and activation conditions. Each gap type is independently configurable through specific RRC messages, allowing the system to manage complexity by dividing the overall gap management function into specialized sub-functions.
Solution Approach 2:
The patent implements dynamic gap configuration where gap parameters (subframe/slot positions, durations, periodicities) can be adjusted based on terminal capabilities, network conditions, and service requirements. The base station dynamically activates or deactivates specific gap types through RRC reconfiguration messages, enabling adaptive optimization of terminal operations without fixed rigid structures.
2Manufacturing precision
If gap configuration parameters are determined based on subcarrier spacing and TDD configuration, then gap precision is improved, but calculation complexity increases
Solution Approach 1:
The patent utilizes parameter changes by deriving gap configuration parameters (starting subframe/slot, duration, periodicity) from fundamental system parameters such as subcarrier spacing and TDD uplink-downlink configuration. This approach ensures precise gap positioning aligned with the physical layer structure while avoiding hardcoding, allowing automatic adaptation when system parameters change.
Solution Approach 2:
The terminal autonomously calculates gap parameters based on received configuration information and current system parameters. The terminal itself performs the derivation of specific subframe/slot positions using formulas based on subcarrier spacing and TDD configuration, eliminating the need for the base station to explicitly signal every gap parameter and reducing overall system complexity.
Data Source
AI summary
A method and apparatus for Method and Apparatus for activating gaps is provided. The method includes receiving a RRCReconfiguration, configuring a one or more gaps based on the one or more gap configuration information, triggering a first message, triggering a Scheduling Request (SR) if a Uplink Shared Channel resource is available and the UL-SCH resource does not accommodate the first message and a MAC subheader, transmitting a first MAC PDU, receiving a second MAC PDU and activating a gap of the one or more gaps based on the second information in the second message.