Paging Message Cn-Domain Field Value for VoLTE Priority
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Solution Overview
Problem
In LTE networks, voice services over the Packet Switched (PS) domain often experience missed calls due to lower priority paging messages, particularly in dual-card dual-standby single-channel terminals where antenna resources are allocated based on higher priority services like CS domain services, leading to competition and missed VoLTE calls.
Innovation Solution
Incorporating a value for the Core network Domain name field in paging messages allows terminals to differentiate between PS and CS domain services, enabling higher priority processing of VoLTE services by identifying the service type in the paging stage and allocating resources accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging messages for PS domain voice services are sent with standard priority, then network resources are allocated efficiently, but VoLTE calls are frequently missed due to lower priority processing
Solution Approach 1:
The patent changes the parameter of Cn-Domain name field by adding a specific value 'PS-VoLTE' to distinguish PS domain voice services from other PS services. This parameter change enables the terminal to identify VoLTE paging messages and process them with higher priority, thereby improving call delivery reliability without significantly increasing processing complexity.
2Reliability
If antenna resources are allocated based on higher priority CS domain services, then CS voice services are ensured, but PS domain VoLTE services compete for resources and are often missed
Solution Approach 1:
The patent segments the PS domain services into different types by introducing the 'PS-VoLTE' value in the Cn-Domain name field. This segmentation allows the terminal to distinguish between PS voice services (VoLTE) and other PS services, enabling differentiated resource allocation and processing priorities, thereby improving VoLTE service productivity while maintaining CS service reliability.
3Ease of operation
If the terminal processes all paging messages uniformly, then processing is simple, but VoLTE calls are missed due to low priority of PS domain paging messages
Solution Approach 1:
The patent applies local quality by making the terminal's paging message processing behavior different based on the specific value of the Cn-Domain name field. When the field contains 'PS-VoLTE', the terminal processes the message with higher priority; otherwise, it uses standard processing. This localized differentiation improves VoLTE call reception reliability while keeping the overall processing mechanism relatively simple.
Data Source
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AI summary
The present disclosure relates to a paging method, a paging device and a paging system, which pertains to the field of internet. The method includes: acquiring (401, 501) an identifier of a terminal being called in a voice service of a Packet Switched domain; generating (402, 502) a paging message according to the identifier of the terminal being called, the paging message including a Core network Domain name field and a value of the Core network Domain name field corresponding to the voice service of the PS domain; and sending (403, 503) the paging message to the terminal being called. In the present disclosure, by additionally providing a value for the Core network Domain name field, the terminal being called may learn about whether the current paging message corresponds to the voice service of the PS domain according to the value of the Core network Domain name field.