Group Call Method for M2M Signaling Overload Reduction
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Solution Overview
Problem
The existing radio communications systems face challenges with signaling overload and resource wastage due to the large number of M2M devices periodically reporting data, leading to complex signaling flows and low success probability of collision-based random access, resulting in network congestion and increased delay.
Innovation Solution
A group call method and device that configures a unified group context for M2M user equipment based on channel resource information and network side capability, allowing ordered access and reducing collisions, thereby saving RRC signaling interactions and SRB resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one-by-one signaling flow is used for each terminal device to report data, then data reporting can be performed individually, but signaling interaction amount increases greatly leading to signaling overload
Solution Approach 1:
Multiple terminal devices are grouped into a group call, and data reporting is performed collectively through a single representative device rather than individually. This merging approach reduces the number of signaling interactions from N separate device-signaling flows to 1 group signaling flow, significantly decreasing signaling overhead and avoiding signaling overload while maintaining reliable data reporting.
Solution Approach 2:
The group call mechanism serves multiple functions simultaneously: it enables data reporting from multiple terminal devices, provides unified resource scheduling, manages group-level signaling interactions, and coordinates uplink channel quality detection for all members. This multi-functionality reduces the need for separate signaling procedures for each device.
2Ease of operation
If collision-based random access is used for data reporting, then access procedure is simplified, but success probability becomes low
Solution Approach 1:
Before performing random access, the system performs uplink channel quality detection and sends sounding reference signals. Based on the detected channel quality, the terminal device determines an appropriate preamble sequence and power level for random access. This preliminary action increases the probability of successful random access by avoiding collisions and power mismatches, while still maintaining the simplicity of the random access procedure.
3Productivity
If all terminal devices execute complete signaling flow for periodic data reporting, then each device can report data independently, but system resources are wasted
Solution Approach 1:
Multiple terminal devices with similar characteristics are merged into a single group call for periodic data reporting. Instead of each device executing a complete signaling flow independently, the group executes a unified signaling procedure. This reduces system resource consumption including radio resources, processing power, and energy, while maintaining the ability to report data efficiently from all group members.
Data Source
AI summary
Embodiments of the present invention provide a group call method and device. The method includes: configuring a group context for a user equipment according to channel resource information or according to network side capability information and channel resource information; sending a message carrying a group call parameter in the group context to the user equipment, where the group call parameter is used to receive a group call message and send a response; sending a group call message to the user equipment according to the group context; and receiving a response, to the group call message, sent by the user equipment according to the group call parameter.