PUCCH Resource Reconfiguration for Reliable Scheduling Requests
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies and latency in dynamically reconfiguring uplink control channel resources for scheduling requests due to the slow nature of Layer 3 (RRC) and Layer 2 (MAC-CE) signaling, especially when user equipment moves to different locations, leading to potential missed scheduling requests.
Innovation Solution
Implementing Layer 1 (DCI) signaling for dynamic reconfiguration of uplink control channel resources, allowing concurrent updates of PUCCH resources and TCI states through RRC configuration for multiple scheduling request configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic reconfiguration of uplink control channel resources is implemented, then scheduling request transmission reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies dynamics by enabling the uplink control channel resources to be dynamically reconfigured based on detected conditions. The system transitions from static resource allocation to dynamic adjustment, where resources are reallocated when scheduling requests fail or under specific channel conditions, thereby improving reliability without requiring permanent complex infrastructure
Solution Approach 2:
The patent changes system parameters by modifying uplink control channel resource allocation based on detected conditions such as scheduling request failures or channel quality. The gNodeB adjusts resource parameters dynamically, changing which resources are used for scheduling requests based on real-time conditions, thus improving reliability through parameter adaptation
2Device complexity
If existing uplink control channel resource allocation is used, then system simplicity is maintained, but scheduling request failures occur under certain conditions
Solution Approach 1:
The patent applies preliminary action by having the gNodeB detect conditions (such as scheduling request failures or channel quality degradation) and proactively reconfigure resources before complete transmission failure occurs. This preventive approach maintains simplicity by using existing resources while improving reliability through anticipatory adjustments
3Productivity
If uplink control channel resources are dynamically reconfigured, then resource utilization efficiency is improved, but reconfiguration overhead increases
Solution Approach 1:
The patent applies local quality by reconfiguring only specific uplink control channel resources based on local conditions rather than reallocating all resources. The gNodeB identifies and adjusts only the necessary resources for scheduling requests under specific conditions, improving efficiency while minimizing reconfiguration overhead through targeted rather than comprehensive changes
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. In a wireless communications system, a user equipment (UE) may receive a first downlink control message indicating a set of parameters for a scheduling request for the UE. The UE may then receive on a receive beam a second downlink control message, which may be a layer 1 signal, and determine uplink resources for the scheduling request and a transmission configuration indicator state for the scheduling request. The UE may transmit, to the base station, the scheduling request using the uplink resources.