LTE Base Station RRC Connection Suspension for Trunking Service
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Solution Overview
Problem
The transition time from the RRC_IDLE state to the RRC_CONNECTED state in LTE networks is not sufficient to meet the delay requirements for quickly establishing a trunking service, leading to inefficiencies in service initiation.
Innovation Solution
A method is introduced where a base station device receives indication information from an evolved packet core network that a user equipment has entered a trunking service mode, allowing it to create a radio resource control connection with the user equipment and configure a first and second discontinuous reception cycle, with the first cycle being shorter than the second, to maintain a continuous RRC connection and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE transitions from RRC_IDLE state to RRC_CONNECTED state for service initiation, then the service can be established, but the transition time is too long to meet delay requirements
Solution Approach 1:
The base station performs preliminary actions by maintaining the RRC connection in a suspended state rather than fully releasing it. The connection context is preserved in both the base station and UE, allowing for rapid resumption without complete re-establishment. This preliminary maintenance of connection state eliminates the need for full transition procedures when services need to be restarted.
Solution Approach 2:
The patent introduces a dynamic connection state mechanism where the RRC connection can be suspended and resumed based on service requirements. The base station and UE can dynamically switch between connected and idle states while preserving connection context, enabling flexible adaptation to varying service demands without rigid state transitions.
2Loss of time
If the UE maintains RRC connection to reduce transition time, then service initiation is faster, but power consumption increases
Solution Approach 1:
The patent implements periodic monitoring and evaluation of service requirements to determine whether to maintain or release the RRC connection. The base station periodically assesses whether the UE needs to remain in connected state based on service patterns, allowing the system to switch between power-saving idle mode and performance-optimized connected mode according to periodic service demands.
Solution Approach 2:
The patent changes the connection state parameter dynamically based on service requirements. Instead of maintaining a fixed connected state, the system adjusts the RRC connection status parameter between connected and suspended states, optimizing the balance between service initiation speed and power consumption according to actual service patterns.
Data Source
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AI summary
The present invention discloses a method for quickly establishing a trunking service and a related device and system. The method includes: receiving, by a base station device, indication information that a user equipment has entered a trunking service mode, where the indication information is sent by an evolved packet core network device; responding, by the base station device, to the indication information, and creating a radio resource control connection with the user equipment; responding, by the base station device, to the indication information, and generating radio resource connection configuration information including a discontinuous reception cycle; sending, by the base station device, the radio resource connection configuration information to the user equipment, so that the user equipment configures the discontinuous reception cycle as a discontinuous reception cycle of the user equipment itself; and when the user equipment is in the trunking service mode, retaining, by the base station device, the radio resource control connection with the user equipment according to the radio resource connection configuration information. According to the present invention, a delay for establishing a trunking service can be reduced significantly, and quick establishment of a trunking service is ensured.