Multi-Cluster SC-FDMA Transmission Power Distribution
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Solution Overview
Problem
Existing vehicle-based communication networks face limitations in power spectral density (PSD) due to predefined configurations, which restrict the maximum transmit power and impact the communication range and efficiency of multi-cluster transmissions in cellular wireless communication systems.
Innovation Solution
Implementing multi-cluster SC-FDMA transmissions by subdividing available bandwidth into equally sized clusters, allowing user equipment (UE) to select and transmit on multiple clusters, thereby optimizing transmission power distribution and increasing communication range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If synchronous networks with frequency division multiplexing are used to concentrate transmission power on part of the bandwidth, then link budget and communication range are improved, but predetermined usage parameters limit and reduce the advantages of vehicle based communication networks
Solution Approach 1:
The patent divides the available bandwidth into multiple frequency clusters, allowing the transmission power to be segmented and distributed across different frequency portions. This enables the system to concentrate power on specific clusters when needed for extended range while maintaining the ability to distribute power across multiple clusters for other scenarios, thus resolving the contradiction between communication range and adaptability in power distribution.
2Device complexity
If predetermined usage parameters are enforced to ensure network control, then network management is simplified, but the maximum transmit power and communication efficiency are restricted
Solution Approach 1:
The patent introduces dynamic power distribution mechanisms that allow user equipment to flexibly allocate transmit power across multiple frequency clusters based on channel conditions and communication requirements. This dynamic approach maintains simplified network management through standardized protocols while enabling higher maximum transmit power and improved communication efficiency by adapting power allocation to real-time conditions.
3Ease of operation
If single-cluster transmissions are used to simplify resource allocation, then configuration is easier, but communication range and power utilization are limited
Solution Approach 1:
The patent combines multiple frequency clusters into a multi-cluster transmission framework, where each cluster maintains its own resource allocation simplicity while the combination of clusters extends the overall communication range and improves power utilization. This merging approach preserves the ease of single-cluster configuration within each frequency portion while achieving the benefits of broader bandwidth utilization through coordinated multi-cluster operations.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may determine to use multi-cluster communications in a vehicle based communication network. The UE may identify a configuration parameter associated with the multi-cluster communications. The UE may select a cluster resource from a set of available cluster resources based on the configuration parameter. The cluster resource may include one or more clusters used for multi-cluster transmissions in the vehicle based communication network. The UE may transmit an indication of the selected cluster resource to a wireless node of the vehicle based communication network, for example, to another UE. The UE may transmit the multi-cluster transmission on the selected cluster resource.