Dedicated Uplink Assignment for Trunking Group Preemption
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Solution Overview
Problem
In trunking wireless communication systems, service subscribers with higher priority levels cannot effectively preempt the uplink channel due to network processing limitations, resulting in increased time lag before a higher priority subscriber can start talking.
Innovation Solution
Assigning a dedicated channel uplink to a service subscriber upon receiving an access request, allowing the subscriber to preempt the uplink without waiting for network allocation, and ensuring the dedicated channel is released only if the requesting subscriber has a higher priority level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic channel allocation is used to improve resource utilization, then system flexibility increases, but assignment delay and control overhead increase
Solution Approach 1:
The patent segments the uplink channels into dedicated channels assigned to specific trunking groups and control channels for coordination. This segmentation allows pre-assigned dedicated channels to operate without real-time control overhead, reducing assignment delay while maintaining flexibility through group-based resource allocation.
Solution Approach 2:
The patent implements preliminary action by pre-assigning dedicated uplink channels to trunking groups before actual communication occurs. The network node assigns dedicated channels in advance based on traffic patterns and group requirements, eliminating the need for real-time channel assignment decisions and reducing latency.
2Loss of time
If dedicated uplink channels are assigned to trunking groups, then access delay decreases, but channel utilization efficiency may reduce
Solution Approach 1:
The patent applies universality by enabling trunking groups to utilize both dedicated uplink channels for their member terminals and shared control channels for coordination. The dedicated channels serve multiple purposes: providing guaranteed access for critical traffic and enabling efficient resource allocation within the group, while the control channel manages overall group coordination and resource sharing.
3Productivity
If trunking groups share common uplink channels, then channel utilization improves, but access delay increases
Solution Approach 1:
The patent segments uplink access into two pathways: dedicated channels for guaranteed low-latency access within trunking groups, and shared control channels for coordination and efficient resource allocation. This segmentation allows the system to simultaneously achieve low access delay through dedicated channels and high channel utilization through coordinated sharing.
Data Source
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AI summary
Embodiments of the present invention disclose a method for assigning a dedicated channel uplink to a service subscriber of a trunking group. When a trunking group call is established, a network allocates a group call channel uplink to the trunking group, assigns the group call channel uplink to the service subscriber upon receiving an uplink access request sent by the service subscriber, establishes a dedicated channel uplink to be allocated to the service subscriber; and assigns the dedicated channel uplink to service subscriber. Through the method, a dedicated channel uplink is assigned to a service subscriber without increasing the time lag before the speech of the service subscriber. Furthermore, a dedicated channel uplink may be assigned to a service subscriber with a higher priority level without increasing the time lag before the speech of the service subscriber with the higher priority level.