D2D UE Bearer Switching via Relay Node Discovery
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Solution Overview
Problem
Existing Device-to-Device (D2D) communication technologies face challenges in maintaining continuous communication services for UE at the coverage edge of a cell, particularly in switching access nodes effectively, which affects data transmission continuity.
Innovation Solution
A method involving bearer control information with a bearer switch indicator and judgment parameter information is used to instruct and determine the switching of a D2D UE to a new access node, including D2D relay node discovery triggered by threshold values, ensuring seamless data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If D2D UE uses relay node for communication at coverage edge, then network coverage is extended, but access node switching becomes complex and communication continuity is affected
Solution Approach 1:
The network side performs preliminary actions by pre-configuring bearer control information and discovery threshold values before the UE needs to switch access nodes. The eNB proactively provides bearer switch judgment parameter information and D2D relay node discovery trigger threshold values to the UE, enabling the UE to prepare for access node switching in advance and execute the switch smoothly without communication interruption.
Solution Approach 2:
The system implements feedback mechanisms where the UE measures reference signals from D2D relay nodes and compares measurements against provided threshold values. The UE feeds back measurement results to the network, and the network adjusts bearer control information based on this feedback, creating a closed-loop control system that manages access node switching dynamically and maintains communication continuity.
2Area of stationary object
If D2D UE switches access nodes frequently at coverage edge, then communication coverage is maintained, but data transmission continuity is disrupted
Solution Approach 1:
The network provides bearer control information and discovery threshold values in advance before the UE actually needs to switch access nodes. This preliminary configuration allows the UE to evaluate potential access node switches beforehand and execute transitions smoothly, minimizing disruption to ongoing data transmissions and maintaining communication continuity.
Solution Approach 2:
The system dynamically adjusts bearer control information and discovery threshold values based on real-time channel conditions and UE location. The eNB modifies these parameters adaptively as the UE moves through different coverage areas, enabling smooth access node switching that maintains data transmission continuity rather than causing disruptions.
3Extent of automation
If D2D relay node discovery is triggered by threshold values, then access node switching is automated, but bearer control complexity increases
Solution Approach 1:
The UE performs self-service by autonomously measuring reference signals from D2D relay nodes and comparing measurements against provided threshold values to determine when access node switching is needed. The UE independently evaluates bearer switch judgment parameter information and executes switching decisions without continuous network intervention, automating the process while the network provides the necessary control frameworks.
Solution Approach 2:
The system manages complexity by changing key parameters (bearer control information and discovery threshold values) that the network provides to the UE. The UE uses these parameters to automate access node switching decisions, and the network adjusts these parameters dynamically based on overall system conditions, maintaining automation while controlling bearer control complexity through parameter management.
Data Source
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AI summary
A method for processing information and a communication node are provided. The method is applied in a first D2D UE and includes: receiving bearer control information sent by a first base station; and switching to a second access node according to the bearer control information for transmitting communication data, and the first base station is a first access node or the second access node, and the second access node is the first base station or a D2D relay node.