UE Channel Feedback for Dual-Connectivity Resource Allocation
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Solution Overview
Problem
In dual connectivity (DC) scenarios, existing wireless communication systems fail to optimally manage resource allocation across master and secondary cell groups due to lack of consideration for channel conditions, leading to sub-optimal throughput and increased latency.
Innovation Solution
User equipment (UE) and network nodes enhance multi-carrier operations by transmitting and receiving information related to channel conditions to facilitate optimal splitting of data volume and resource allocation across cell groups, leveraging channel estimates to improve resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource allocation is based solely on bandwidth and reference signal received power, then device complexity is reduced, but throughput and spectral efficiency deteriorate
Solution Approach 1:
The patent implements feedback mechanisms where user equipment transmits channel state information and buffer status reports to network nodes. The network nodes use this feedback to dynamically adjust resource allocation decisions, enabling throughput optimization based on real-time channel conditions while maintaining manageable device complexity through standardized feedback protocols.
Solution Approach 2:
The patent changes the allocation parameters from static values (bandwidth only) to dynamic parameters that include channel state information, buffer status, and quality of service requirements. This allows the system to adapt resource allocation to varying channel conditions and traffic patterns, improving throughput without requiring overly complex device architecture.
2Productivity
If data volume splitting is optimized using channel estimates, then spectral efficiency is improved, but measurement precision requirements increase
Solution Approach 1:
The patent applies partial channel state information and buffer status reports to make resource allocation decisions. Rather than requiring complete and perfectly precise channel estimates, the system uses available partial information to make improved allocation decisions, achieving spectral efficiency gains without demanding excessive measurement precision that would increase system complexity.
Solution Approach 2:
The patent introduces buffer status reports as an intermediary mechanism between the user equipment and network nodes. These reports provide summarized information about data buffer states, allowing the network to make informed resource allocation decisions without requiring direct, high-precision real-time channel measurements for every allocation decision, thus reducing measurement precision requirements while maintaining spectral efficiency.
3Loss of time
If resource allocation is centralized without channel condition consideration, then device complexity is reduced, but latency increases
Solution Approach 1:
The patent implements preliminary actions by having user equipment continuously report buffer status and channel conditions to network nodes before resource allocation decisions are made. This advance information availability enables the network to proactively allocate resources based on predicted needs and current channel conditions, reducing latency without requiring complex real-time decision-making at the device level.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit at least one of first information associated with splitting a data volume across a first cell group and a second cell group, or second information associated with sharing UE resources across the first cell group and the second cell group. The UE may communicate via the first cell group and the second cell group in accordance with at least one of a split of the data volume across the first cell group and the second cell group based at least in part on the first information, or an allocation of the UE resources across the first cell group and the second cell group based at least in part on the second information. Numerous other aspects are described.