Base Station Access Control to Limit Inactive Direct Transmission Congestion
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Solution Overview
Problem
In wireless communication systems, multiple UEs attempting to access the same cell can interfere with each other and cause network overload, leading to congestion, resource waste, and Quality of Service degradation, particularly during inactive direct transmissions without transitioning to the connected state.
Innovation Solution
Implementing access control mechanisms at the base station to manage UE access attempts by configuring service configurations and processing direct transmission signals, including access control information, to allow or reject subsequent transmissions based on network conditions and predefined parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple UEs are allowed to access the same cell simultaneously, then network coverage and service availability are improved, but network overload and congestion occur
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting access control parameters (barring factors, thresholds, and timing) based on network conditions. The base station monitors network load and modifies the parameters controlling UE access attempts, transitioning between allowing and restricting access based on predefined thresholds and network state, thereby resolving the contradiction between maintaining service availability and preventing network overload
Solution Approach 2:
The patent implements dynamics by making the access control mechanism adaptive and time-varying. The base station continuously evaluates network conditions and dynamically switches between different access control states (allowing access, barring access, partial barring), creating a dynamic system that responds to changing network load rather than using static access control policies
2Productivity
If access control mechanisms are implemented to limit UE access attempts, then network overload is prevented, but service quality and emergency call success rate may be affected
Solution Approach 1:
The patent applies local quality by implementing differentiated access control for different types of traffic and UEs. The base station can apply different barring parameters and access control policies to specific UEs or traffic types (e.g., emergency calls versus regular data traffic), allowing critical services to maintain high reliability while limiting access from non-critical sources to preserve network capacity
Solution Approach 2:
The patent implements feedback mechanisms where the base station monitors network conditions, UE access attempts, and transmission success rates, then adjusts access control parameters accordingly. This closed-loop control ensures that access restrictions are optimized to maintain QOS for critical services while preventing network overload, with continuous adaptation based on observed network performance
3Loss of energy
If UEs transmit in INACTIVE state without transitioning to connected state, then signaling overhead is reduced, but signal interference and access conflicts increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring UEs with access control parameters and service configurations while in the INACTIVE state. The base station provides barring parameters and access control information to UEs before they attempt transmission, allowing UEs to self-regulate their access attempts without transitioning to the connected state, thereby reducing signaling overhead while managing interference through pre-established access rules
Data Source
AI summary
A base station associated with a wireless communication system is disclosed. The base station comprises one or more processors configured to generate a service configuration signal to be provided to a user equipment (UE) associated therewith. In some embodiments, the service configuration signal comprises an indication of one or more service configurations associated with a data transmission that are allowed to be transmitted by the UE during an INACTIVE state of the UE. In some embodiments, the one or more processors is further configured to provide the service configuration signal to the UE.