5G NR Paging for Dedicated Uplink Resources and Lower Collisions
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Solution Overview
Problem
In 5G NR communication systems, user equipment (UEs) in idle or inactive states face increased collision probabilities and access delays due to simultaneous selection of common uplink transmission resources during random access, leading to inefficient resource utilization.
Innovation Solution
The method involves transmitting a paging message containing resource indication information to specify unique uplink transmission resources for each UE, reducing collisions by directing UEs to use designated resources for information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If UEs in idle or inactive states perform random access on common resources, then uplink data transmission can be initiated, but collision probability between UEs increases and access delay increases
Solution Approach 1:
The common uplink transmission resource is segmented into multiple dedicated resources, with each resource assigned to specific UEs based on their identification information. This segmentation eliminates collisions by ensuring each UE has its own designated resource rather than competing for shared resources.
Solution Approach 2:
The network device performs preliminary assignment of uplink transmission resources to UEs before actual data transmission occurs. By pre-configuring dedicated resources based on UE identification information, the system avoids the need for UEs to contend for resources at transmission time, thereby reducing access delay and collision probability.
2Device complexity
If multiple UEs select the same common resource for random access simultaneously, then resource utilization is simplified, but access delay increases due to collisions
Solution Approach 1:
Different UEs are assigned different local qualities of uplink resources based on their identification information. Each UE has its own specific time-frequency resource characteristics, which are locally optimized for that UE's needs. This local differentiation maintains simplicity at the network level while ensuring efficient, collision-free access for each individual UE.
3Reliability
If dedicated uplink transmission resources are assigned to each UE via paging messages, then resource collision probability decreases, but signaling overhead increases
Solution Approach 1:
The paging message structure is enhanced to serve multiple functions simultaneously: it not only pages the UE but also carries the UE's identification information and its corresponding dedicated uplink resource assignment. This multi-functionality reduces the need for separate signaling messages, thereby minimizing additional signaling overhead while achieving collision-free resource allocation.
Data Source
AI summary
A method and device for information transmission, and related equipment are provided. An access network device transmits a paging message, where the paging message contains resource indication information of a user equipment (UE), and the resource indication information indicates an uplink transmission resource of the UE. The access network device receives information transmitted by the UE on the uplink transmission resource.