Uplink Scheduling for Unlicensed Carriers Using Segmented Counters
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scheduling and managing unlicensed carriers and multiple numerologies, particularly in uplink scheduling, which affects network performance and user experience.
Innovation Solution
The implementation of advanced radio access network (RAN) architecture and protocol stacks that enable dynamic scheduling and resource allocation for unlicensed carriers and multiple numerologies, utilizing techniques such as Orthogonal Frequency Division Multiple Access (OFDMA) and Quadrature Amplitude Modulation (QAM), along with advanced beam management and bandwidth adaptation mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic scheduling and resource allocation for unlicensed carriers and multiple numerologies are implemented, then network efficiency and user experience are improved, but device complexity and protocol implementation difficulty increase
Solution Approach 1:
The patent segments the scheduling process by introducing separate counters (e.g., counter 401, counter 402) for different numerologies and carriers. Each counter independently tracks scheduling opportunities for specific numerology combinations, allowing the system to manage multiple numerologies without creating a combinatorial explosion of complexity. This segmentation enables efficient resource allocation across unlicensed carriers while maintaining manageable device complexity through modular counter management.
2Area of stationary object
If advanced beam management and bandwidth adaptation mechanisms are utilized, then network coverage and user experience are improved, but protocol complexity and implementation difficulty increase
Solution Approach 1:
The patent implements preliminary action by pre-configuring numerology combinations and their associated parameters before actual data transmission. The system establishes beam management and bandwidth adaptation settings in advance for different numerology scenarios, so that when scheduling decisions are made, the appropriate configurations are already prepared and can be quickly activated without complex real-time calculations, thereby improving network coverage while controlling protocol complexity.
Data Source
AI summary
A wireless device receive, from a base station, one or more messages comprising configuration parameters of a cell. The configuration parameters indicate a plurality of slot groups of the cell. A medium access control control element is received. The medium access control control element comprises a parameter indicating a slot group of the plurality of slot groups. A downlink control information is received. The downlink control information indicates an uplink grant for one or more uplink slots of the slot group. A listen before talk (LBT) procedure is performed based on the uplink grant. In response to the LBT procedure indicating a clear channel, one or more transport blocks are transmitted on the one or more uplink slots of the slot group.