5G Paging Message Aggregation on PDSCH to Reduce Delay
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Solution Overview
Problem
In 5G/NR systems, the current method of sending paging messages on multiple beams increases paging delay due to the need for repeated transmissions and potential incomplete notification of User Equipments (UEs) within a single transmission, as each beam requires separate messaging.
Innovation Solution
The solution involves sending multiple paging messages on the same Physical Downlink Shared Channel (PDSCH) using the same Downlink Control Information (DCI), allowing for simultaneous notification of multiple UEs and scheduling these messages outside the minimum UE bandwidth range to increase frequency-domain resources and reduce processing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging messages are sent on multiple beams using beam sweeping, then coverage is improved, but paging delay increases due to repeated transmissions
Solution Approach 1:
The patent combines multiple paging messages intended for different UEs into a single PDSCH transmission. By merging the paging messages and using a single DCI to schedule them, the system achieves multi-UE notification simultaneously, reducing the time required compared to sequential beam sweeping transmissions.
Solution Approach 2:
The patent makes a single PDSCH transmission serve multiple functions by enabling it to carry paging messages for multiple UEs simultaneously. This multi-functional approach allows one transmission to replace what would traditionally require multiple separate transmissions across different beams.
2Reliability
If multiple paging messages are sent to cover all UEs, then completeness of notification is improved, but paging delay increases due to multiple transmissions
Solution Approach 1:
The patent merges multiple individual paging messages into a single aggregated paging message structure that can be transmitted together. This combining approach ensures all target UEs are notified in one transmission event rather than requiring sequential messages.
Solution Approach 2:
The patent uses DCI format 1_6 as a specialized copy/adaptation of the standard DCI format, optimized for paging scenarios. This specialized DCI format enables efficient scheduling of paging PDSCH resources and supports the multi-UE notification function.
3Ease of operation
If paging is restricted to minimum UE bandwidth range, then UE processing complexity is reduced, but frequency-domain resources are limited
Solution Approach 1:
The patent introduces dynamic bandwidth adaptation for paging transmissions. The network can flexibly adjust the bandwidth range beyond the minimum UE bandwidth based on available resources and traffic conditions, while UEs can be configured with appropriate monitoring bandwidths to balance resource utilization and processing complexity.
Solution Approach 2:
The patent changes the bandwidth parameter dynamically, allowing paging PDSCH transmissions to utilize frequency resources outside the traditional minimum UE bandwidth range. This parameter adjustment enables more flexible resource allocation while maintaining UE compatibility through proper configuration.
Data Source
AI summary
An information transmission method, a device, and a computer readable medium are provided. The method comprises: receiving a paging message corresponding to the UE according to information associated with the UE; wherein the information comprises at least one of: a Paging-Radio Network Temporary Identity (P-RNTI) corresponding to the UE, a Control Resource SET (CORESET) corresponding to the UE and a search space corresponding to the UE; wherein receiving the paging message corresponding to the UE according to the information associated with the UE comprises: at a Paging Occasion (PO) of the UE, detecting Downlink Control Information (DCI) sent by a network device based on the information associated with the UE and receiving the DCI; receiving a Physical Downlink Shared Channel (PDSCH) according to the DCI; and acquiring the paging message from the PDSCH.