Emergency Paging Acquisition During Discontinuous Transmit-Off Periods
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Solution Overview
Problem
Existing 5G wireless communication systems face challenges in efficiently managing resource loads and ensuring low latency and high reliability for emergency paging in mobile devices, particularly in varying QoS classes like URLLC and eMBB, without overburdening the network.
Innovation Solution
Implementing a method for radio network nodes to transmit emergency paging configurations that include discontinuous transmit off periods, allowing for emergency paging messages to be sent during non-emergency occasions, using synchronization signal blocks and information blocks, and configuring user equipment to monitor specific resources during these off periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If discontinuous transmit off periods are implemented to reduce network load and energy consumption, then resource efficiency improves, but emergency paging delivery reliability deteriorates
Solution Approach 1:
The patent segments paging resources into emergency paging occasions and non-emergency paging occasions. During discontinuous transmit off periods, only emergency paging occasions remain active while non-emergency paging is suspended. This segmentation allows the system to maintain emergency paging reliability while achieving energy savings during non-critical periods.
Solution Approach 2:
The patent introduces an intermediary mechanism where the network transmits indications to user equipment about which paging occasions are active. This intermediary signaling layer allows user equipment to adapt their monitoring behavior dynamically, ensuring they can receive emergency paging messages even when regular paging is suspended during transmit off periods.
2Loss of time
If emergency paging messages are transmitted during activated discontinuous transmit off periods via non-emergency paging occasion resources, then paging message delivery speed improves, but network resource allocation complexity increases
Solution Approach 1:
The patent implements dynamic resource allocation where non-emergency paging occasion resources can be temporarily repurposed for emergency paging transmission. The system dynamically adjusts resource usage based on emergency conditions, allowing flexible reuse of available resources without requiring dedicated emergency resources, thus managing complexity while improving response time.
Solution Approach 2:
The patent changes the operational parameters of existing paging resources by transmitting indications that modify their function. During emergency conditions, non-emergency paging occasion resources are reconfigured to carry emergency paging messages, effectively changing their parameter state from non-emergency to emergency mode without adding new physical resources.
3Reliability
If user equipment monitors emergency paging occasions during discontinuous transmit off periods, then emergency message reception reliability improves, but user equipment power consumption increases
Solution Approach 1:
The patent implements a self-service mechanism where user equipment autonomously determines which paging occasions to monitor based on received network indications. User equipment receives signaling about active paging occasions and independently adjusts their monitoring behavior accordingly, eliminating the need for continuous monitoring while ensuring emergency messages are not missed.
4Reliability
If on-demand emergency paging configuration is implemented with synchronization signal block activation, then emergency paging reliability during transmit off periods improves, but system complexity and overhead increase
Solution Approach 1:
The patent makes synchronization signal blocks serve multiple functions: they provide both cell identification/synchronization and carry emergency paging indications during discontinuous transmit off periods. This multi-functionality allows the same signaling resources to support both normal synchronization operations and emergency alert delivery without requiring separate dedicated emergency signaling channels.
Data Source
AI summary
A radio network node may receive, from a core network, an on-demand paging configuration comprising an indication to enable synchronization signal block transmission during discontinuous transmit off operation. The node may configure user equipment to be associated with a paging occasion group corresponding to one or more paging occasion resources. The node may broadcast a paging message indication via a synchronization signal block during a discontinuous transmit off period. The node may broadcast, using a broadcast scrambling code, a paging message indication via a configured emergency paging occasion if synchronization signal block transmission during discontinuous transmit off has not been enabled. A paging message indication may comprise a paging occasion group indication. User equipment corresponding to a paging occasion group indicated in a paging message indication may receive a paging message transmitted by the node, during configured discontinuous transmit off operation, via a paging occasion corresponding to the group.