Multicast Bearer Status Management for Mission Critical Trunking
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Solution Overview
Problem
In mission critical public trunking services, terminals in a terminal group registered with different participating service entities receive duplicate service data, leading to resource waste due to simultaneous use of multicast bearers by multiple service entities.
Innovation Solution
A communication method where a target service entity manages the status of multicast bearers, allowing only one participating service entity to use the bearer to send service data to a terminal group, preventing duplication by determining the availability of the multicast bearer before allowing data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple participating service entities use multicast bearers to send service data to terminal groups, then service coverage and reliability are improved, but resource waste increases due to duplicate data transmission
Solution Approach 1:
The patent implements a feedback mechanism where the target service entity returns a response message containing the status of the multicast bearer to the first participating service entity. This feedback allows the system to determine whether the bearer is already in use and prevent duplicate transmissions, thereby resolving the contradiction between service coverage and resource waste.
Solution Approach 2:
The patent applies preliminary action by having the first participating service entity query the status of the multicast bearer before attempting to use it for data transmission. This preliminary check prevents multiple service entities from simultaneously using the same bearer, eliminating resource waste while maintaining reliable service delivery.
2Adaptability or versatility
If multiple participating service entities simultaneously send service data to terminal groups using multicast bearers, then service availability is improved, but communication efficiency deteriorates due to duplicate reception
Solution Approach 1:
The target service entity provides feedback through response messages that indicate the status of multicast bearers. This enables participating service entities to make informed decisions about data transmission, avoiding duplicate sends and improving communication efficiency while maintaining service availability.
Solution Approach 2:
The system performs preliminary status queries before data transmission begins. By checking whether a multicast bearer is already in use, the system prevents redundant transmissions, thereby improving communication efficiency without compromising service availability for terminal groups.
Data Source
AI summary
The present disclosure relates to communication methods and apparatus. One example method includes receiving, by a target service entity, a first request message from a first participating service entity, and sending, by the target service entity, a first response message to the first participating service entity. The first request message comprises an identity of a target multicast bearer and a group identity of a terminal group. The first response message is used to instruct the first participating service entity to use the target multicast bearer to send service data of the terminal group.