User Equipment Slot Format Signaling for Flexible PUCCH Access
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Solution Overview
Problem
Existing wireless communication systems face limitations in communication flexibility and efficiency, particularly in improving capacity, speed, and flexibility in wireless communication devices.
Innovation Solution
Implementing systems and methods that utilize radio resource control (RRC) information to manage slot format combinations, periodic channel state information (CSI) reporting, and channel access procedures for downlink and uplink transmissions, enhancing communication flexibility and efficiency through controlled PDCCH monitoring and PUCCH transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing communication structures are used, then device simplicity is maintained, but communication flexibility and efficiency are limited
Solution Approach 1:
The patent implements dynamic slot format indication through DCI signaling, allowing the slot format to be changed flexibly according to actual communication needs. The base station can dynamically indicate different slot formats (uplink, downlink, or flexible) to adapt to varying traffic patterns and service requirements, transforming the static communication structure into a dynamic one that improves flexibility without permanently increasing system complexity
Solution Approach 2:
The patent changes the parameter of slot format configuration from fixed to variable by introducing RRC signaling for pre-configuration of multiple slot formats and DCI signaling for dynamic selection. This parameter change mechanism allows the system to switch between different communication modes (uplink/downlink/flexible) by changing the slot format parameter, thereby improving communication flexibility and efficiency
2Productivity
If communication capacity and speed are improved, then system performance increases, but communication efficiency may be compromised
Solution Approach 1:
The patent implements periodic channel state information (CSI) reporting mechanisms where UEs report channel conditions at configured periodic intervals. This periodic action allows the base station to maintain accurate channel state knowledge for efficient resource allocation and scheduling, improving communication capacity while avoiding continuous monitoring that would waste energy and reduce efficiency
Solution Approach 2:
The patent enables UEs to autonomously determine their transmission parameters based on received slot format indications and configured uplink grants. The UE can self-adjust its transmission timing, frequency resources, and power based on the dynamic slot format, reducing the need for continuous base station control signaling and thereby improving overall communication efficiency while maintaining high capacity
Data Source
AI summary
A method for a user equipment (UE) which communicates with a base station in a serving cell is described. The method may comprise acquiring first radio resource control (RRC) information and second RRC information. The first RRC information may indicate one or more slot format combinations. The second RRC information may indicate periodic channel state information (CSI) reporting. The method may also comprise performing a first physical downlink control channel (PDCCH) monitoring if the first RRC information is provided. The first PDCCH monitoring may be monitoring of a first PDCCH with a first downlink control information (DCI) format. The method may further comprise performing the periodic CSI reporting on a physical uplink control channel according to the third RRC information. If the first RRC information is provided and if the first DCI format providing a slot format for a slot is not detected, a transmission of the PUCCH may be performed for a set of symbols of the slot, subject to a channel access procedure.