Paging Message Transmission Method for 5G Terminals
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Solution Overview
Problem
In 5G mobile communications systems, the simultaneous transmission of short message paging and terminal paging messages on a single paging occasion can lead to delayed or missed messages, resulting in poor user experience, especially during critical events like earthquakes or tsunamis, due to reduced demodulation complexity in terminal devices.
Innovation Solution
The method involves an access network device sending a first paging message with a preset time point for a second paging message, allowing the terminal device to receive the second message at that designated time, thereby avoiding delays and improving user experience without increasing demodulation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the access network sends both short message paging and terminal paging messages on a single paging occasion, then the demodulation complexity of terminal devices is reduced, but the paging message delivery timeliness deteriorates
Solution Approach 1:
The paging message transmission is segmented into two separate transmission opportunities: the first paging message is sent on the first paging occasion, and the second paging message is sent on the second paging occasion. This segmentation allows terminal devices to selectively receive only the short message paging on the first occasion without needing to demodulate additional messages, thereby reducing demodulation complexity while ensuring that the terminal paging message is delivered timely on the second occasion.
Solution Approach 2:
The first paging message containing the first identifier is sent in advance on the first paging occasion to indicate the type of paging message. This preliminary action allows terminal devices to identify and handle short message paging without full demodulation complexity, while the network prepares to send the second paging message on the second paging occasion, ensuring timely delivery without increasing terminal complexity.
2Device complexity
If the access network sends the paging message on a subsequent paging cycle, then the demodulation complexity of terminal devices is reduced, but the user experience deteriorates
Solution Approach 1:
The system employs periodic paging occasions to transmit paging messages. The first paging message is transmitted on the first paging occasion, and the second paging message is transmitted on the second paging occasion within the same paging cycle. This periodic structure ensures that terminal devices can reduce demodulation complexity on the first occasion while guaranteeing reliable delivery of terminal paging messages on the second occasion, thereby maintaining good user experience.
3Device complexity
If the access network sends critical emergency paging messages in subsequent cycles, then terminal device complexity is reduced, but the emergency response time increases
Solution Approach 1:
The system sends the first paging message in advance on the first paging occasion to notify terminal devices of upcoming paging activities. This preliminary notification allows the network to send critical emergency paging messages as the second paging message on the second paging occasion within the same cycle, ensuring fast emergency response while keeping terminal device complexity low, as devices only need to monitor the structured two-message format rather than fully demodulate all potential messages.
Data Source
AI summary
A paging message transmission method and apparatus are described. The method can include sending, by an access network device, a first paging message to a terminal device on a first paging occasion, where the first paging message comprises a first identifier and a preset time point for sending a second paging message, the first identifier indicates the first paging message is a short message, and the second paging message is a message for terminal paging. The method can also include sending, by the access network device to the terminal device at the preset time point, scheduling information corresponding to the second paging message, and sending the second paging message on a time-frequency resource corresponding to the scheduling information.