Distributed Antenna Terminal Identifier Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly in distributed antenna systems, efficiently allocating UE identifiers is challenging due to the complexity of multi-antenna configurations and the need for seamless communication across multiple cells, especially in high-speed vehicle environments where legacy systems face limitations in providing reliable and efficient service.
Innovation Solution
A method where a user equipment (UE) with multiple distributed antenna units performs random access procedures with multiple cells, transmits information about the distributed antenna units, and conducts authentication procedures to enable efficient signal transmission and reception through multiple cells, using a central unit to control and coordinate the antenna groups for optimized communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE with multiple distributed antenna units performs random access procedures with multiple cells, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The UE is divided into multiple distributed antenna units (DUs), each capable of independently performing random access procedures with different cells. This segmentation allows the system to achieve diversity gain and improve communication reliability by distributing the communication function across multiple spatially separated antenna units, while each DU maintains a simplified individual structure.
Solution Approach 2:
The patent introduces a spatial dimension by deploying antenna units at different locations rather than concentrating them in one place. This spatial distribution across multiple dimensions enables the system to access multiple cells simultaneously, improving reliability through spatial diversity without requiring each individual antenna unit to be overly complex.
2Adaptability or versatility
If distributed antenna units transmit information about antenna groups to multiple cells, then service availability increases, but loss of information increases
Solution Approach 1:
The patent merges the information from multiple distributed antenna units by selecting a representative DU (such as the one with the best channel condition or lowest index) to convey the combined antenna group information to the network. This merging approach ensures that service availability is maintained across multiple cells while preventing information loss by consolidating the representation of the distributed antenna system into a single coherent message.
3Reliability
If authentication procedures are performed with multiple cells, then security is improved, but loss of time increases
Solution Approach 1:
The patent performs authentication procedures preliminarily with the selected representative distributed antenna unit before actual data transmission begins. By completing the authentication process in advance with the chosen DU that will handle the communication, the system ensures security is established without requiring repeated authentication with multiple cells during operation, thereby reducing time loss.
4Productivity
If multiple distributed antenna units are used for signal transmission, then throughput is improved, but device complexity increases
Solution Approach 1:
The UE is segmented into multiple distributed antenna units, each with relatively simple individual functionality. This segmentation enables throughput improvement through spatial diversity and parallel transmission capabilities while keeping each individual antenna unit's complexity manageable. The network can selectively activate different DUs based on channel conditions to optimize throughput.
Solution Approach 2:
Each distributed antenna unit is designed with local quality optimized for its specific function and location, rather than requiring all units to have identical complex capabilities. This allows the system to achieve high overall throughput by leveraging the strengths of individual DUs in different spatial locations while minimizing the complexity of each unit.
Data Source
AI summary
Disclosed is a method for a terminal, which comprises a plurality of distributed antenna units, transmitting and receiving a signal in a wireless communication system. More particularly, the method comprises the steps of 1) performing a first random access procedure with a first cell by means of a first distributed antenna unit group and performing a second random access procedure with a second cell by means of a second distributed antenna unit group; 2) transmitting, to the first cell and the second cell, information about the distributed antenna units comprised in the corresponding antenna unit groups; and 3) performing an authorization procedure with the first cell by means of the first distributed antenna unit group and transmitting an authorization procedure skip request signal to the second cell by means of the second distributed antenna unit group.