Uplink Channel Frequency Hopping for 5G BWP Collision Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In next-generation 5G New Radio (NR) networks, there is a need for efficient methods to prevent resource collisions between user equipment (UEs) using different bandwidth part (BWP) configurations when transmitting uplink channels, as existing technologies lack a detailed and efficient approach for managing uplink control and data channels.
Innovation Solution
The proposed solution involves a frequency hopping method where user equipment (UE) and base stations (BS) exchange BWP configuration and frequency hopping information to enable the transmission and reception of uplink control and data channels through a single BWP, using specific frequency hopping rules and resource allocation to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency hopping is applied for UL channel transmission in NR with multiple BWPs, then resource collision between UEs using different BWP configurations is prevented, but system complexity increases due to additional configuration management
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting frequency hopping parameters (hopping offset, hopping bandwidth) based on BWP configuration parameters. The frequency hopping behavior is controlled by modifying parameters such as the frequency offset which is calculated as a function of the BWP starting frequency and bandwidth, allowing the system to adapt frequency hopping characteristics to different BWP configurations without requiring separate hopping configurations for each BWP.
Solution Approach 2:
The patent implements universality by creating a unified frequency hopping mechanism that works across multiple BWPs using a single configuration set. The same frequency hopping configuration can be applied to different BWPs by dynamically calculating the actual frequency resources based on the active BWP's characteristics, making the frequency hopping function universal rather than requiring separate configurations for each BWP.
2Reliability
If detailed frequency hopping configuration is provided for each BWP, then transmission reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts the BWP-specific frequency characteristics (starting frequency, bandwidth) from the complete frequency hopping configuration. Instead of providing full frequency hopping configurations for each BWP, the patent separates the common frequency hopping parameters from the BWP-specific parameters, using only the necessary BWP characteristics to derive the actual frequency resources. This reduces signaling overhead while maintaining transmission reliability.
Solution Approach 2:
The patent introduces an intermediary calculation mechanism that translates BWP configuration parameters into frequency hopping resources. Rather than directly signaling frequency hopping resources for each BWP, the system uses BWP configuration information as an intermediary to derive the actual frequency hopping parameters, reducing the amount of explicit signaling required while ensuring accurate resource allocation.
3Productivity
If frequency hopping is implemented across multiple BWPs, then resource utilization efficiency is improved, but transmission precision requirements increase
Solution Approach 1:
The patent uses parameter changes to maintain frequency resource allocation precision across multiple BWPs by dynamically adjusting frequency hopping parameters based on the active BWP's starting frequency and bandwidth. The frequency offset and hopping bandwidth are calculated as functions of BWP parameters, ensuring precise resource allocation that adapts to different BWP configurations without requiring separate precision calibration for each BWP.
Data Source
AI summary
Provided are an apparatus and method for transmitting and receiving an uplink (UL) channel. A method for a user equipment (UE) to transmit a UL control channel and a UL data channel to a base station (BS) includes receiving bandwidth part (BWP) configuration information of a BWP set composed of one or more BWPs configured for a UE from a BS, receiving frequency hopping configuration information for a UL control channel and a UL data channel transmitted through one BWP of the BWP set from the BS, and transmitting a UL control channel and a UL data channel to the BS through the single BWP of the BWP set based on the BWP configuration information and the frequency hopping configuration information.