5G Terminal Identifier Segmentation for Contention Resolution
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Solution Overview
Problem
Next generation mobile communication systems face challenges in managing a large number of wireless communication devices and effectively performing contention resolution when multiple devices attempt to connect to the network, particularly due to the need for new identifiers with larger lengths and the complexity of connection procedures in 5G systems.
Innovation Solution
The implementation of a method where terminals transmit specific parts of their identifiers, such as 5G-S-TMSI and 5G-GUTI, in RRC connection establishment messages to base stations, allowing for effective contention resolution and connection management across different network systems, including LTE and 5G networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If new identifiers with larger lengths (e.g., 5G-S-TMSI, 5G-GUTI) are introduced to manage a large number of wireless communication devices, then the quantity of devices that can be identified increases, but the complexity of connection procedures and contention resolution increases
Solution Approach 1:
The patent segments the identifier transmission process into two distinct parts: the first message includes a first part of the identifier (e.g., lower 40 bits of 5G-S-TMSI), and the third message includes a second part of the identifier (e.g., upper bits of 5G-S-TMSI or 5G-GUTI). This segmentation allows the system to manage larger identifiers by distributing them across multiple messages, thereby handling a larger quantity of devices while managing connection procedure complexity through structured multi-step processes.
2Ease of operation
If multiple terminals transmit connection requests simultaneously using the same identifier format, then the ease of operation for terminal connection improves, but contention collisions increase
Solution Approach 1:
The patent applies segmentation by dividing the identifier into two parts transmitted at different stages. Terminals transmit the first part of their identifier in the initial connection request (second message), and the base station uses this first part for initial contention resolution. The second part is transmitted later in the third message for final confirmation. This segmentation reduces contention collisions by enabling the base station to identify and resolve conflicts using the first part before full identifier exchange occurs.
Solution Approach 2:
The patent implements feedback mechanisms where the base station transmits the first part of the identifier in the fourth message to confirm successful reception, and terminals use this feedback to determine whether contention resolution was successful. The base station then transmits the second part of the identifier in the fifth message for final confirmation. This feedback loop enables terminals to detect and resolve contention collisions efficiently while maintaining ease of operation.
3Speed
If the complete identifier is transmitted in the first message, then the speed of connection establishment improves, but the message size and potential for collision increase
Solution Approach 1:
The patent segments the identifier transmission to optimize connection speed while managing message size. Instead of transmitting the complete identifier in a single message, the system divides it into two parts: the first part is transmitted in the second message for initial processing and contention resolution, while the second part is transmitted in the third message for final confirmation. This segmentation maintains connection establishment speed by enabling parallel processing of the first part while reducing message size and collision probability through distributed transmission.
Data Source
AI summary
A communication scheme and a system thereof for converging an internet of things (IoT) technology and a fifth generation (5G) communication system for supporting a high data transmission rate beyond that of a fourth generation (4G) system are provided. The disclosure may be applied to a smart service (e.g., a smart home, a smart building, a smart city, a smart car or connected car, healthcare, digital education, retail business, a security and security related service, or the like) based on a 5G communication technology and an IoT related technology. The disclosure relates to a method and an apparatus for supporting a terminal to set up connection to a network in a next generation mobile communication system.