Access Network Device Bearer Setup for VoLTE Weak Coverage
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Solution Overview
Problem
In VoLTE services, access network devices struggle to set up bearers effectively in weak LTE coverage areas, leading to poor user experience due to inadequate radio channel quality, and existing solutions do not adequately address this issue.
Innovation Solution
The proposed method involves an access network device receiving a bearer setup request, setting up a bearer if radio channel quality meets the service requirement, and sending a deletion request if it does not, allowing for resource reallocation to services with lower quality requirements, and adjusting coding information to improve service execution without bearer deletion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the access network device directly sets up a bearer for VoLTE service, then the service setup speed is improved, but the service reliability deteriorates in weak coverage areas
Solution Approach 1:
The access network device performs preliminary radio channel quality detection before setting up the bearer. The determination module detects whether the radio channel quality meets the service requirement before the setup module establishes the bearer, preventing unreliable service execution from the outset while maintaining efficient setup process.
Solution Approach 2:
The system implements a feedback mechanism where the determination module continuously monitors radio channel quality and provides feedback to the setup module. When quality deteriorates below the threshold, the system deletes the bearer and triggers alternative service execution, ensuring service reliability through continuous quality assessment and adaptive response.
2Reliability
If the access network device allocates radio resources for high quality services, then the service quality is improved, but the resource utilization efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts service execution based on real-time radio channel quality. The determination module continuously assesses quality conditions, and the setup module adapts by establishing, maintaining, or deleting bearers accordingly. This dynamic approach ensures high service quality when conditions permit while optimizing resource utilization when conditions deteriorate.
Solution Approach 2:
The system changes the service execution parameter (bearer establishment) based on the radio channel quality parameter. When quality meets the threshold, the bearer is established for high-quality service; when quality falls below the threshold, the bearer is deleted and alternative execution is triggered, optimizing resource allocation based on environmental conditions.
3Productivity
If the access network device deletes the bearer when radio channel quality is insufficient, then the resource allocation efficiency is improved, but the service continuity deteriorates
Solution Approach 1:
The system introduces an intermediary alternative service execution mechanism. When the bearer is deleted due to poor radio quality, the system triggers alternative execution (such as circuit-switched fallback or other communication paths) to maintain service continuity, ensuring that resource optimization does not compromise user service availability.
Data Source
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AI summary
This application provides a service communication method and a device, and relates to the field of communications technologies, to resolve a problem that when a terminal is in a weak coverage area of an LTE network, an eNB cannot properly set up a bearer for a VoLTE service or user experience is relatively poor in a process of executing the VoLTE service. A specific solution is: receiving, by an access network device from a core network device or an application function device, a bearer setup request message for requesting to set up a bearer for a service, where the bearer setup request message carries a service requirement of the service; setting up, by the access network device, the bearer for the service; sending, by the access network device, a bearer setup response message to the core network device or the application function device, where the bearer setup response message is used to notify the core network device or the application function device that the access network device has set up the bearer for the service; and sending, by the access network device, a bearer deletion request message to the core network device or the application function device when the access network device determines that radio channel quality provided by the access network device does not meet the service requirement.