Dynamic Frequency Domain Resource Allocation in FDD Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In communication systems, the asymmetrical uplink and downlink traffic patterns often lead to inefficient utilization of bandwidth resources, with either uplink or downlink resources being underutilized due to fixed bandwidth configurations, resulting in suboptimal resource allocation and increased communication latency.
Innovation Solution
The method involves dynamically determining the locations of frequency domain resources in FDD or TDD patterns, where downlink or uplink frequency domain resources are placed at the edge of a bandwidth part (BWP) or carrier, with flexible frequency domain resources deployed in target areas, allowing for flexible duplexing and improved resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed bandwidth configuration is used for BWP, then device complexity is reduced and configuration is simplified, but resource utilization efficiency deteriorates due to asymmetric uplink and downlink traffic
Solution Approach 1:
The patent implements dynamic bandwidth part configuration where the network can flexibly adjust uplink and downlink bandwidth sizes based on actual traffic conditions. The BWP configuration is no longer fixed but can be dynamically modified through RRC signaling to match asymmetric traffic patterns, thereby improving resource utilization while maintaining manageable system complexity through standardized procedures.
Solution Approach 2:
The patent changes the bandwidth parameters of BWP configurations to optimize resource allocation. By adjusting the bandwidth size parameters for uplink and downlink independently based on traffic demands, the system achieves better resource utilization efficiency without requiring complete reconfiguration of the communication framework.
2Reliability
If dedicated frequency domain resources are allocated for uplink and downlink, then transmission reliability is improved, but resource allocation flexibility deteriorates leading to idle resources
Solution Approach 1:
The patent enables frequency domain resources to serve multiple functions by allowing flexible configuration of uplink and downlink bandwidth parts within the same carrier. Resources can be dynamically allocated for different directions (uplink/downlink) based on traffic needs, making the resource allocation system universal and adaptable while maintaining reliable dedicated allocations when needed.
Solution Approach 2:
The system transitions from static dedicated resource allocation to dynamic allocation where bandwidth part configurations can be adjusted in real-time based on traffic conditions. This dynamic approach maintains transmission reliability through dedicated resource guarantees while improving allocation flexibility to match actual usage patterns.
3Ease of operation
If asymmetric traffic patterns are accommodated with fixed bandwidth, then configuration simplicity is maintained, but communication latency increases due to resource underutilization
Solution Approach 1:
The patent implements dynamic BWP configuration that adapts to asymmetric traffic patterns in real-time. When downlink traffic exceeds uplink traffic, the system can allocate larger downlink bandwidth parts, and vice versa. This dynamic adjustment reduces idle resource waiting time and communication latency while maintaining configuration simplicity through standardized RRC signaling procedures.
Solution Approach 2:
The system enables self-service resource allocation where the network automatically adjusts bandwidth part configurations based on observed traffic patterns without requiring manual intervention. This maintains operational simplicity while reducing latency by ensuring resources are available when needed based on actual demand.
Data Source
AI summary
Transmission methods and a terminal are provided. An exemplary method includes: determining, by a terminal, locations of frequency domain resources in a Frequency Division Duplexing (FDD) pattern; and performing, by the terminal, transmission according to the locations of the frequency domain resources. The locations of the frequency domain resources include: a downlink frequency domain resource located at an edge in a band of a downlink Bandwidth Part (BWP) or a downlink carrier, and an uplink frequency domain resource or a flexible frequency domain resource located in at least part of a target area in the band of the downlink BWP or the downlink carrier.