Non-cell specific paging multicasting in 5G wireless networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting paging messages, particularly in 5G networks, where multiple base stations send cell-specific messages, leading to increased control plane delay, limited capacity, and inability to combine messages from multiple cells, resulting in reduced paging success rates and inability to carry additional parameters like caller ID, flow ID, and bearer ID.
Innovation Solution
Implementing a non-cell specific multicasting method using Internet Protocol (IP) multicast, where multiple base stations join a virtual cell group and transmit paging messages as a single, synchronized signal, allowing for improved signal-to-noise ratio and inclusion of additional parameters, enabling more efficient and effective paging message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple base stations send cell-specific paging messages, then paging coverage is provided, but control plane delay increases and paging success rate decreases
Solution Approach 1:
The patent combines paging messages from multiple base stations into a single synchronized signal using non-cell specific multicasting. Multiple base stations transmit the same paging message simultaneously on the same time-frequency resources, allowing the UE to combine signals from multiple cells, thereby improving signal-to-noise ratio and reducing control plane delay while maintaining reliable paging delivery across coverage areas.
Solution Approach 2:
The patent introduces a universal non-cell specific paging message that can be received by UEs across multiple cells simultaneously. This universal paging approach allows a single paging message to serve multiple cells and multiple UEs, eliminating the need for separate cell-specific paging transmissions and reducing overall control plane delay.
2Loss of information
If cell-specific paging messages are used, then cell identification is provided, but message capacity is limited and additional parameters cannot be carried
Solution Approach 1:
The patent merges multiple information elements including caller ID, flow ID, bearer ID, and other parameters into a single unified non-cell specific paging message. This consolidation increases message capacity significantly, allowing all necessary parameters to be transmitted in one paging opportunity without requiring multiple separate messages or increasing structural complexity.
3Reliability
If multiple cells transmit paging messages independently, then coverage is extended, but messages cannot be combined and paging success rate reduces
Solution Approach 1:
The patent enables signal combining at the UE side by transmitting identical non-cell specific paging messages from multiple base stations simultaneously on the same time-frequency resources. The UE combines these signals to improve signal-to-noise ratio, thereby increasing paging success rate while improving overall paging efficiency through reduced retransmissions and faster paging response.
Solution Approach 2:
The patent creates equipotential paging conditions across multiple cells by synchronizing paging message transmission in terms of time, frequency, and content. All participating base stations transmit the same paging message with identical parameters, ensuring that the UE receives equivalent signal quality from each cell and can effectively combine them, thereby maximizing paging success rate across the entire coverage area.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Aspects of the present disclosure describe receiving paging messages in wireless communications. A user equipment (UE) can receive one or more parameters for descrambling non-cell specific paging messages. The UE can receive, from one or multiple base stations, a non-cell specific paging message. The UE can descramble the non-cell specific paging message based at least in part on the one or more parameters.