Frequency Band Allocation for Paging in Idle Wireless Devices
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing frequency band allocation for downlink transmission during idle or inactive states, particularly in 3GPP LTE and NR systems, which affects data reception and feedback mechanisms.
Innovation Solution
A method and apparatus for wireless devices to monitor paging information and communicate with the network using physical resource blocks (PRBs) for efficient downlink frequency band allocation, even in idle or inactive states, enabling proper data reception and feedback mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE transitions to connected state for data transmission, then data transmission capability is improved, but energy consumption increases and latency is introduced due to intermediate resume and resume complete messages
Solution Approach 1:
The network performs downlink data transmission to the UE in idle or inactive state by allocating PRBs and transmitting paging messages in advance, eliminating the need for the UE to transition to connected state for initial data reception. This preliminary action prevents the energy-consuming state transition while enabling immediate data delivery.
Solution Approach 2:
The patent extracts the essential data transmission function from the connected state requirement, allowing data to be transmitted directly to UEs in idle or inactive states by removing the mandatory state transition step. Only the necessary paging and data transmission components are retained, eliminating unnecessary resume procedures.
2Use of energy by moving object
If the network transmits DL data to UE in idle or inactive state, then energy efficiency is improved, but frequency band allocation complexity increases
Solution Approach 1:
The system segments the frequency band into multiple DL frequency bands and allocates specific PRBs from different segments to UEs based on their requirements. This segmentation allows flexible frequency band allocation for downlink data transmission to UEs in idle or inactive states while maintaining clear resource management boundaries.
Solution Approach 2:
The network dynamically allocates PRBs from available DL frequency bands to UEs in idle or inactive states based on real-time data transmission needs. This dynamic allocation mechanism enables energy-efficient direct data transmission while adapting frequency band usage to current system conditions, resolving the complexity issue through flexible resource management.
3Productivity
If multiple DL frequency bands are used in a cell, then system capacity is improved, but the ability to determine appropriate frequency band for data reception becomes more difficult
Solution Approach 1:
The network provides feedback to UEs about the allocated PRBs and corresponding frequency bands through paging messages. This feedback mechanism enables UEs to correctly identify which frequency band to monitor for downlink data transmission, even when multiple DL frequency bands are available in the cell, thus maintaining system capacity while simplifying UE frequency band determination.
Data Source
AI summary
A method and apparatus for frequency band allocation for transmission based on a paging in a wireless communication system is provided. A wireless device receives, from a network, system information including a list of physical resource blocks (PRBs). While in an idle state and/or an inactive state, the wireless device monitors a paging including information indicating at least one PRB from the list of the PRBs, and communicates with the network based on the at least one PRB.