Dynamic Subgroup Paging for M2M Access Congestion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In M2M communication systems, particularly in smart grids, group calls lead to RAN and CN overload due to dense access from multiple terminals, and existing solutions require significant processing and signaling resources to maintain subgroups, causing additional congestion.
Innovation Solution
A method where the core network and RAN device dynamically calculate the number of subgroups based on current load, sending relevant information in paging messages to terminals, allowing them to determine whether to respond, thereby avoiding the need to maintain subgroup information and reducing signaling and processing burdens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If group call is used to reduce paging load, then paging efficiency is improved, but access channels and core network become overloaded due to dense access from multiple terminals
Solution Approach 1:
The patent divides a large group of terminals into multiple subgroups and pages them separately at different time slots. This segmentation prevents all terminals from accessing the network simultaneously, thereby reducing access channel overload while maintaining efficient paging through organized sub-grouping.
Solution Approach 2:
The patent implements periodic paging of subgroups at different time intervals. By scheduling subgroup paging periodically rather than simultaneously, the system reduces peak access load on channels and core network while ensuring all terminals are eventually paged efficiently.
2Object-affected harmful factors
If terminals are divided into subgroups to reduce network load, then access congestion is reduced, but processing resources and signaling resources are consumed for maintaining subgroup configurations
Solution Approach 1:
The patent applies partial action by only maintaining essential subgroup identifiers and basic configuration information rather than full subgroup state. This reduces processing and signaling overhead while still achieving access congestion mitigation through the subgrouping mechanism.
Solution Approach 2:
The system enables terminals to self-identify their subgroup membership using simple identifiers provided in paging messages, rather than requiring complex network-side subgroup management. This reduces the signaling and processing burden on the network for maintaining subgroup configurations.
Data Source
AI summary
The present invention discloses a group call method, device and terminal, belonging to the field of communications technologies. The method includes: calculating, according to the load of a RAN device, the number of subgroups in a group maintained by the RAN device; and send a paging message carrying relevant information of the number of the subgroups, so that a terminal receiving the paging message determines, according to relevant information of the number of the subgroups, whether to respond to the paging message. The device is a RAN device or a CN device. The terminal includes a receiving module and a processing module. In the present invention, the number of paging groups and an in-group terminal being paged are determined dynamically without requiring a core network to maintain subgroup information, thereby greatly saving subgroup maintaining resources as well as signaling and processing resources.