Terminal Frequency Division Multiplexing Resource Allocation
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Solution Overview
Problem
Future radio communication systems, such as 5G and NR, face challenges in managing uplink resources efficiently due to a shortage compared to downlink resources, leading to potential degradation in system performance including increased delay and coverage issues, especially in high-traffic scenarios.
Innovation Solution
Implementing a terminal and radio communication method that utilizes frequency division multiplexing for both downlink and uplink resources, allowing for simultaneous transmission and reception in the same time resource, and configuring XDD resources using higher layer signaling and physical layer signaling to optimize resource allocation and management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink resources are increased to meet high-traffic demands, then system capacity and user satisfaction improve, but system delay increases and coverage performance degrades due to uncontrolled resource allocation
Solution Approach 1:
The patent implements dynamic resource allocation where the base station adjusts uplink resource allocation in real-time based on downlink traffic conditions. The network device dynamically configures frequency division multiplexing resources and shared spectrum channel access parameters, allowing the system to adapt resource distribution to actual traffic demands rather than using static allocation, thereby improving system capacity without uncontrolled delay increase
Solution Approach 2:
The patent changes key system parameters including enabling frequency division multiplexing of downlink and uplink resources, configuring shared spectrum channel access parameters (such as channel access priority classes, contention window sizes), and adjusting resource allocation ratios. These parameter changes allow the system to optimize resource usage efficiency and control delay while meeting high-traffic demands
2Productivity
If uplink resources are increased to improve system capacity, then more users can be served, but coverage performance degrades due to interference and uncontrolled resource expansion
Solution Approach 1:
The patent implements feedback mechanisms where terminals report channel quality indicators, buffer status, and resource usage information to the base station. The network device uses this feedback to adjust resource allocation and shared spectrum channel access parameters, ensuring that uplink resources are increased only when and where needed, thereby maintaining coverage performance while improving system capacity
Solution Approach 2:
The patent applies frequency division multiplexing to allocate different frequency resources for downlink and uplink transmissions within the same time slot. This allows localized optimization of resource allocation in different frequency bands, enabling uplink resources to be increased in specific frequency regions without causing system-wide interference that would degrade coverage performance
3Productivity
If frequency division multiplexing is implemented for simultaneous downlink and uplink transmission, then resource usage efficiency improves, but system complexity increases due to additional configuration and management requirements
Solution Approach 1:
The patent implements a universal configuration mechanism where the base station uses standardized higher-layer signaling (RRC messaging) to configure frequency division multiplexing resources, shared spectrum channel access parameters, and resource allocation rules that apply across multiple terminals and frequency bands. This multi-functional configuration approach reduces the need for terminal-specific complex management while achieving efficient resource usage
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives first configuration information related to use of a frequency to which shared spectrum channel access is applied, and second configuration information for configuring a resource in which frequency division multiplexing of a downlink (DL) resource and an uplink (UL) resource is available, and a control section that controls, based on the first configuration information and the second configuration information, use of the resource in which the frequency division multiplexing is available in the frequency applied with the shared spectrum channel access. According to one aspect of the present disclosure, it is possible to enhance efficiency of resource use.