Multi-Band Cell Access Using Overlapping Frequency Bands
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Solution Overview
Problem
Existing network terminals that do not support certain frequency bands, such as n38 and/or n7, are unable to access cells deployed by network operators using these bands, leading to low resource utilization.
Innovation Solution
A communication method that allows terminals to access network devices by utilizing overlapping frequency bands, enabling configuration of cells and BWPs to support multiple frequency bands, and reducing interference through synchronized signal deployment and flexible BWP management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network operators deploy cells on n38 and/or n7 frequency bands, then network coverage is provided, but terminals not supporting these bands cannot access the network and resource utilization is low
Solution Approach 1:
The patent applies universality by enabling a single cell to serve multiple frequency bands (n38, n7, and n41) simultaneously. The network device configures the cell to operate on multiple bands, allowing terminals supporting any of these bands to access the network. This multi-functional approach ensures that whether a terminal supports n38/n7 or only n41, it can successfully access the network, thereby improving adaptability while utilizing network resources more efficiently.
2Adaptability or versatility
If the network device configures cells on multiple frequency bands, then more terminals can access the network, but interference between bands increases
Solution Approach 1:
The patent applies segmentation by dividing the frequency spectrum into distinct bands (n38, n7, n41) and configuring separate bandwidth parts (BWPs) for each band within the same cell. Each BWP is dedicated to a specific frequency band, allowing the network device to manage multiple bands without significant interference. This segmentation enables terminals to select the appropriate BWP based on their supported bands, reducing interference while maintaining multi-band compatibility.
3Loss of energy
If the network device uses overlapping frequency bands for multiple cells, then spectrum utilization improves, but resource allocation complexity increases
Solution Approach 1:
The patent applies dynamics by implementing flexible BWP configuration where the network device can dynamically allocate bandwidth parts to different frequency bands based on terminal capabilities and network conditions. The network device determines which BWPs to configure for each cell based on real-time requirements, allowing dynamic adjustment of resource allocation. This dynamic approach optimizes spectrum utilization while managing complexity through adaptive rather than static configuration.
Data Source
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AI summary
This application discloses a communication method. The communication method specifically includes: A terminal receives a first synchronization signal and physical broadcast channel block, where the first synchronization signal and physical broadcast channel block is located at an overlapping part between a first frequency band and a second frequency band. The first synchronization signal and physical broadcast channel block indicates a first time-frequency resource of a first cell, and the first time-frequency resource is located at the overlapping part between the first frequency band and the second frequency band. The terminal obtains indication information based on the first time-frequency resource, where the indication information indicates that a carrier corresponding to the first cell belongs to the first frequency band and the second frequency band. According to the communication method, a network device can configure at least one cell of the second frequency band by using the first frequency band, so that a terminal supporting the second frequency band can access the network device.