Group Identifier Mapping for Session Establishment in 3GPP Networks
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Solution Overview
Problem
In conventional 3GPP communications systems, the existing local route method for data packet transmission between the User Plane Function (UPF) and the base station, and between the base station and terminal devices, is inefficient due to the need for multiple terminal device IDs to determine the devices that need to receive the data packet, leading to low terminal device and data packet transmission efficiency.
Innovation Solution
A method that involves obtaining information about a group to which a first identifier belongs, indicated by a second identifier, to determine the group information for multiple terminal devices corresponding to multiple first identifiers, allowing these devices to be determined using only one second identifier, thereby improving terminal device and data packet transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the existing local route method is used to forward data packets between UPF and base station, then the long path and high delay problem is resolved, but terminal device determining efficiency and data packet transmission efficiency become low due to requiring multiple terminal device IDs
Solution Approach 1:
The patent merges multiple terminal device IDs into a single group ID to identify a group of terminal devices. The UPF obtains group member information including multiple terminal devices and their identifiers, then uses one group ID to represent the entire group, reducing the number of identifiers needed for data packet forwarding.
Solution Approach 2:
The group ID serves as a universal identifier that can represent multiple terminal devices simultaneously. Instead of requiring individual terminal device IDs for each device, a single group ID performs the function of identifying the entire group of terminal devices that need to receive data packets.
2Measurement precision
If multiple terminal device IDs are used to determine terminal devices for data packet reception, then individual device identification is accurate, but data packet transmission efficiency decreases due to increased complexity
Solution Approach 1:
The patent combines multiple terminal device IDs into a single group ID, reducing routing complexity. The UPF stores group member information that maps the group ID to multiple terminal devices, allowing efficient identification without handling multiple individual IDs separately.
Solution Approach 2:
The UPF performs preliminary action by obtaining and storing group member information in advance, including the associations between group IDs and multiple terminal device IDs. This pre-established mapping enables efficient data packet routing without real-time computation of multiple identifiers.
Data Source
AI summary
A session establishment method, a data transmission method, and a related apparatus are provided. A first device receives a first message sent by a second device. The first device establishes a first session with a third device based on the first message. The first message carries a first identifier and a second identifier, and the second identifier indicates information about a group to which the first identifier belongs. A fourth device is determined based on the second identifier. According to the application, the efficiency on determining the fourth device is improved, thereby improving data transmission efficiency.