Access Network Device Service Setup Handover for VoLTE
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Solution Overview
Problem
In LTE networks, VoLTE services experience poor user experience due to inadequate radio resource allocation in weak coverage areas, leading to suboptimal service execution.
Innovation Solution
A service setup method where an access network device receives service requirements from a core network device or service application server, determines radio channel quality, and either allocates resources or hands over the user equipment to a more suitable cell to ensure service quality meets the requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If radio resource is forcibly allocated to UE after service setup request is received, then service setup speed is improved, but service execution reliability deteriorates in weak coverage areas
Solution Approach 1:
The access network device performs preliminary evaluation of radio channel quality before allocating radio resources for service execution. By assessing whether the current cell's channel quality meets the service requirement threshold, the system prevents resource allocation in unsuitable conditions, thereby ensuring service execution reliability without compromising setup speed
Solution Approach 2:
The system implements a feedback mechanism where the access network device evaluates radio channel quality and compares it against service requirements. Based on this feedback, the device either proceeds with resource allocation or triggers handover to another cell, dynamically adjusting resource allocation decisions to maintain reliable service execution
2Device complexity
If admission threshold is determined based on empirical value, then device complexity is reduced, but manufacturing precision deteriorates due to errors in threshold determination
Solution Approach 1:
The patent replaces fixed empirical admission thresholds with dynamic service requirement parameters provided by the service application server. These parameters are adjusted based on actual service needs and radio conditions, improving admission control accuracy without significantly increasing device complexity since the access network device simply evaluates against provided thresholds
Data Source
AI summary
Embodiments of this application relate to the field of communications technologies, and disclose a service setup method and a device, to resolve a problem that a service cannot be normally executed. The method includes: receiving, by an access network device, a first setup request; sending a first setup response to a first core network device or a first service application server, where the first setup response is used to indicate that the access network device accepts the first setup request; when radio channel quality of a first cell of a first network in which UE is located does not satisfy a service requirement of a first service carried in the first setup request, handing over the UE to a second cell of the first network, or handing over the UE to a third cell of a second network.