PUCCH Transmission via Secondary Component Carrier
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing physical uplink control channel (PUCCH) communications, particularly when primary component carriers have insufficient uplink resources, leading to delays and resource inefficiencies.
Innovation Solution
Implementing a method where user equipment (UE) can transmit PUCCH communications via a secondary component carrier, based on indications and priorities, to optimize resource utilization and reduce latency by leveraging the numerology and available resources of both primary and secondary carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PUCCH communication is transmitted only via the primary component carrier, then the system maintains simple resource management, but uplink resource insufficiency causes transmission delays and reduced productivity
Solution Approach 1:
The patent segments the PUCCH transmission function across multiple component carriers. Instead of confining PUCCH to the primary component carrier only, the system divides the transmission capability across primary and secondary component carriers, allowing flexible selection based on uplink resource availability. This segmentation enables parallel transmission paths and resolves the contradiction by improving productivity through multiple carriers while managing complexity through structured carrier selection rules.
Solution Approach 2:
The patent implements dynamic PUCCH transmission by allowing the system to adaptively select between primary and secondary component carriers based on real-time uplink resource conditions. The UE and base station dynamically determine whether to transmit PUCCH on the primary or secondary carrier, creating a flexible, condition-based resource management approach that improves transmission efficiency without requiring overly complex static configurations.
2Loss of time
If the system waits for sufficient uplink resources on the primary carrier before transmitting PUCCH, then resource allocation remains simple, but transmission latency increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with secondary component carrier information and establishing ahead of time the conditions under which PUCCH can be transmitted on alternative carriers. This preparatory configuration allows the system to immediately switch to secondary carriers when uplink resources become available, eliminating waiting delays without requiring complex real-time decision-making during transmission.
Solution Approach 2:
The secondary component carrier acts as an intermediary transmission path when the primary carrier lacks sufficient uplink resources. Instead of waiting for the primary carrier to become available, the system uses the secondary carrier as a mediator to carry PUCCH transmissions, thereby reducing latency while maintaining manageable complexity through defined intermediary usage rules.
3Productivity
If multiple component carriers are used for PUCCH transmission, then resource utilization improves, but power consumption and computing overhead increase
Solution Approach 1:
The patent applies partial action by enabling PUCCH transmission on secondary component carriers only when and where uplink resources are insufficient on the primary carrier. Rather than continuously utilizing multiple carriers (excessive action), the system selectively activates secondary carriers only for the specific PUCCH transmission function when needed, thereby improving resource utilization efficiency while minimizing additional power consumption and computing overhead.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a downlink communication associated with a physical uplink control channel (PUCCH) communication. The UE may transmit the PUCCH communication via a secondary component carrier based at least in part on, for example, a primary component carrier having insufficient uplink resources for transmitting the PUCCH communication. Numerous other aspects are described.