UE Uplink Channel Access Mapping for SRS-PUSCH Gap Scheduling
Find Innovative SolutionsGenerate Solutions
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
The implementation of a UE and base station configuration that includes receiving and transmitting circuitry for downlink control information (DCI) formats indicating channel access types, cyclic prefix extensions, and channel access priority classes, with gaps between sounding reference signals (SRS) and physical uplink shared channels (PUSCH) exceeding 16 microseconds, allowing for predetermined access types and extensions based on indicated combinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless communication systems use existing communication structures, then system stability is maintained, but communication flexibility and efficiency are limited
Solution Approach 1:
The patent segments the communication structure into distinct components: DCI formats for control information, SRS for channel sounding, and PUSCH for data transmission. These segmented elements can be independently configured and optimized, allowing flexible adaptation without overwhelming system complexity. The gap mechanism between SRS and PUSCH provides additional segmentation for resource management.
Solution Approach 2:
The patent introduces dynamic elements including: multiple DCI formats that can be selectively used, variable cyclic prefix extensions adapted to channel conditions, and flexible channel access priority classes. These dynamic configurations enable the system to adapt communication parameters in real-time based on traffic requirements and channel state, improving flexibility while maintaining manageable complexity through standardized procedures.
2Productivity
If wireless communication systems increase communication capacity and speed, then service quality improves, but communication efficiency may deteriorate due to resource overhead
Solution Approach 1:
The patent implements preliminary action through the SRS (sounding reference signal) transmitted before PUSCH (physical uplink shared channel). The SRS provides advance channel state information, allowing the system to pre-configure optimal transmission parameters for the subsequent PUSCH. This preliminary channel sounding enables more efficient resource allocation and higher capacity transmission without excessive overhead, as the system prepares in advance rather than reacting to channel conditions during data transmission.
Solution Approach 2:
The patent employs parameter changes through: multiple cyclic prefix extension lengths that can be selected based on channel delay spread, variable channel access priority classes for different traffic types, and configurable gaps between SRS and PUSCH. These parameter adjustments optimize the balance between communication capacity and efficiency by adapting transmission characteristics to match actual channel conditions and traffic requirements, avoiding unnecessary overhead while maintaining high data rates.
Data Source
AI summary
A user equipment (UE) is described. The UE may comprise receiving circuitry configured to receive a downlink control information (DCI) format including an information field. The information field may indicate a combination of a channel access type, a cyclic prefix (CP) extension index and a channel access priority class (CAPC). The UE may also comprise transmitting circuitry configured to transmit a sounding reference signal (SRS) and a physical uplink shared channel (PUSCH). The SRS and the PUSCH may be based on the DCI format. There may be a gap between the SRS and the PUSCH. The gap may be longer than 16 microseconds. If the SRS is transmitted earlier than the PUSCH, the channel access type and the CP extension index corresponding to the indicated combination may apply to the SRS, a predetermined channel access type and a predetermined CP extension length may apply to the PUSCH, a predetermined CAPC may apply to the SRS, and the CAPC corresponding to the indicated combination may apply to the PUSCH.