Cascaded Polling for DRX Message Delivery in 5G/6G Devices
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Solution Overview
Problem
In 5G and 6G wireless networks, user devices in a sleep state due to DRX (discontinuous reception) may miss incoming messages, necessitating a method for the base station to inform them of pending messages efficiently.
Innovation Solution
The base station broadcasts a polling message indicating which user devices have messages on hold, followed by a user device response to request the message, using a cascaded polling method that reduces resource usage and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station uses traditional polling methods to inform user devices of incoming messages, then the user devices can receive messages, but the resource consumption and system complexity increase significantly
Solution Approach 1:
The patent segments the polling process into two distinct phases: a broadcast phase where the base station transmits polling information to all user devices, and a selective response phase where only devices with messages respond. This segmentation reduces complexity by avoiding the need for individualized polling conversations with every device.
Solution Approach 2:
The base station periodically broadcasts polling messages at predetermined intervals rather than continuously polling each device. This periodic broadcast approach reduces system complexity and resource consumption while maintaining reliable message delivery to devices that wake from sleep mode.
2Reliability
If the base station continuously monitors all user devices for incoming messages, then message delivery is reliable, but energy consumption increases
Solution Approach 1:
The base station employs periodic polling broadcasts rather than continuous monitoring. The polling messages are transmitted at predetermined time intervals, allowing the base station to maintain message delivery reliability while significantly reducing energy consumption by remaining inactive between polling cycles.
Solution Approach 2:
User devices independently monitor the broadcast polling messages and autonomously determine whether they have incoming messages. This self-service mechanism eliminates the need for continuous base station monitoring of individual device states, reducing base station energy consumption while maintaining reliable message delivery.
3Reliability
If the base station uses complex handshaking procedures to ensure message delivery to sleep devices, then message delivery is reliable, but the time required for delivery increases
Solution Approach 1:
The patent segments the message delivery process into a simple broadcast notification phase and a direct transmission phase. The broadcast polling message notifies devices of incoming messages without requiring complex handshaking, thereby reducing delivery time while maintaining reliability through the structured two-phase process.
Solution Approach 2:
The base station performs preliminary action by broadcasting polling messages in advance to notify user devices of incoming messages before actual transmission. This preliminary notification eliminates the need for complex real-time handshaking during message delivery, reducing the time required for message transmission while ensuring reliable delivery.
Data Source
AI summary
Disclosed is a method for a base station of a 5G/6G wireless network to signal a particular user device that it has an incoming message on hold. In a first embodiment, the base station indicates, in an “index” message. which section has at least one message on hold, each section comprising multiple user devices. Then in a second message, the base station indicates the addresses of the particular user devices, in each section mentioned in the index message. Thus the user devices can be informed of their incoming messages compactly, without interfering with other user devices that doe not have messages on hold. Multiple other embodiments are described, enabling networks to efficiently signal each user device individually using a resource-efficient encoding and related procedures.