Wireless Device RANA Paging Distribution via Node List Exchange
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Solution Overview
Problem
In wireless networks, especially in future 5G and evolved LTE networks, accurately distributing paging messages across Radio Access Network Areas (RANAs) is challenging due to the dynamic nature of network nodes supporting these areas, as there is no central node like MME to maintain up-to-date information, leading to potential failures in message transmission.
Innovation Solution
Wireless devices collect RANA-related information from visited network nodes, extracting a list of nodes that support a RANA and sending it to a first network node, enabling efficient distribution of paging messages within the RANA, allowing network nodes to transmit messages accurately without relying on a central distribution node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a central MME node is used to distribute paging messages, then the distribution is reliable and up-to-date, but the system complexity and dependency on central nodes increases
Solution Approach 1:
The patent segments the centralized paging distribution function into distributed components. Each network node maintains its own list of supported Tracking Areas and can independently determine which nodes should receive paging messages, eliminating the single-point complexity of the MME while maintaining reliable distribution through decentralized decision-making
Solution Approach 2:
Network nodes perform self-service by autonomously maintaining their own TA lists and independently determining paging distribution targets. Each node can independently identify other nodes supporting the same TAs and distribute pages without requiring central MME coordination, reducing system complexity while preserving reliability
2Adaptability or versatility
If network nodes dynamically support different Tracking Areas, then the network adaptability improves, but the accuracy of identifying which nodes support a RANA deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where network nodes report which Tracking Areas they support to the system. This feedback allows dynamic adaptation of TA support while maintaining accurate identification of RANA nodes, as the system continuously updates its knowledge of node capabilities based on reported information
Solution Approach 2:
Network nodes pre-establish and maintain lists of Tracking Areas they support before paging operations occur. This preliminary preparation ensures that when dynamic changes occur in TA support, the system already has accurate information about which nodes support which TAs, maintaining identification accuracy while allowing adaptability
3Reliability
If paging messages are distributed to all possible network nodes, then the message delivery reliability improves, but the energy consumption and message distribution overhead increases
Solution Approach 1:
The patent applies local quality by having each network node maintain specific knowledge about which Tracking Areas it supports and which other nodes support the same TAs. This localized information allows paging messages to be distributed only to relevant nodes within the specific RANA, ensuring reliable delivery to the paged device while avoiding unnecessary transmissions to unrelated nodes, thus reducing energy consumption and overhead
Data Source
AI summary
A wireless device, a first network node and methods therein, for supporting or performing distribution of paging messages within a Radio Access Network Area, RANA, of a wireless network. The wireless device collects RANA related information from network nodes visited by the wireless device. The RANA related information indicates which RANAs are supported by the respective network nodes. A list of network nodes that support a RANA is extracted from the collected RANA related information, and the list is sent to the first network node to enable distribution of paging messages by the first network node within the RANA.