Shared Control Channel Allocation for Dynamic Spectrum Sharing
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Solution Overview
Problem
Wireless communication systems face low spectrum resource utilization due to independent division of spectrum resources among networks, leading to inefficient use even when one network is lightly loaded.
Innovation Solution
Implementing a dynamic spectrum sharing mechanism between cells in a wireless network, allowing lightly loaded networks to share spectrum resources with others, using control channel and resource block allocation methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spectrum resources are independently divided among different wireless networks, then each network can maintain independent control and reliable service delivery, but spectrum resource utilization efficiency deteriorates due to idle resources in lightly loaded networks
Solution Approach 1:
The patent merges spectrum resources of multiple wireless networks into a shared pool, allowing dynamic allocation based on actual demand. Network devices from different networks can access and utilize the same spectrum resources through coordinated scheduling, thereby improving overall utilization efficiency while maintaining service reliability through centralized resource management.
Solution Approach 2:
The patent creates a universal spectrum resource pool that serves multiple wireless networks simultaneously. The shared spectrum resources can be dynamically allocated to serve different network services and users based on demand, making the spectrum infrastructure multi-functional and adaptable to varying network conditions.
2Loss of energy
If spectrum resources are shared between different wireless networks, then spectrum resource utilization efficiency improves, but network complexity increases due to coordination requirements between networks
Solution Approach 1:
The patent introduces a centralized network device or resource management entity that acts as an intermediary to coordinate spectrum resource allocation between multiple wireless networks. This intermediary manages the shared spectrum pool, handles allocation decisions, and coordinates between different network devices, thereby simplifying the complexity by centralizing control rather than requiring direct peer-to-peer coordination between all networks.
Solution Approach 2:
The patent dynamically changes spectrum allocation parameters such as bandwidth parts, resource blocks, and frequency ranges based on network demand and service requirements. By adjusting these parameters in real-time, the system optimizes spectrum utilization while managing complexity through standardized parameter control mechanisms.
3Adaptability or versatility
If control channel resources are allocated from shared spectrum resources, then resource allocation flexibility improves, but resource allocation complexity increases due to need to avoid overlap between networks
Solution Approach 1:
The patent segments the shared spectrum resources into distinct control channel resource regions and data channel resource regions. Control channel resources for different networks are allocated in separate, non-overlapping frequency ranges or time slots, while data channels can more freely share the remaining resources. This segmentation provides flexibility for control channels while simplifying allocation by establishing clear separation rules.
Solution Approach 2:
The patent applies different allocation strategies to different parts of the spectrum resource pool. Control channel resources receive dedicated, protected allocation with strict separation guarantees, while data channel resources enjoy more flexible shared allocation. This local quality approach optimizes reliability for control functions while maximizing utilization for data transmission.
Data Source
AI summary
A resource sharing method and apparatus. A first network device determines a first control channel resource of a first cell from a first spectrum resource, where the first cell belongs to the first network device. The first network device sends a first message to a second network device, where the first message indicates a second network device to allocate a second control channel resource to a second cell from the first spectrum resource. The second cell belongs to the second network device. The first control channel resource and the second control channel resource belong to different parts of the first spectrum resource, and the first spectrum resource is a spectrum resource shared by the first cell and the second cell.