D2D Bearer Handover for Continuous Cellular Edge Transmission
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Solution Overview
Problem
Conventional Device-to-Device (D2D) communication systems experience discontinuous service transmission due to challenges in changing access nodes, particularly at the edge of cellular coverage where signal quality is poor, leading to interruptions in data communication.
Innovation Solution
The method involves sending bearer control information to facilitate timely bearer handover for D2D UEs, allowing them to switch between access nodes, using eNBs and D2D relay nodes, based on RRM measurement threshold values and signal quality parameters, to maintain continuous data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If D2D UE operates at the coverage edge of a cellular cell and changes access node, then communication coverage is extended, but communication continuity is disrupted due to lack of bearer handover mechanisms
Solution Approach 1:
The network pre-configures measurement parameters and thresholds for D2D UEs before they move to coverage edge areas. This preliminary configuration enables UEs to proactively measure and report signal quality of potential target access nodes, allowing the network to prepare bearer handover decisions before communication disruption occurs
Solution Approach 2:
The system implements a feedback mechanism where D2D UEs continuously report measurement results (such as RSRP, RSRQ) of serving and neighboring cells to the network. The network uses this feedback to dynamically adjust bearer handover decisions, ensuring communication continuity while extending coverage to edge areas
2Reliability
If D2D UE maintains connection with multiple access nodes simultaneously, then communication reliability is improved, but system complexity increases due to bearer management overhead
Solution Approach 1:
The system dynamically adjusts the number of active bearers and access node connections based on real-time measurement reports and network conditions. Instead of maintaining fixed multi-connectivity, the system transitions between single and multi-connectivity modes, optimizing reliability while minimizing bearer management complexity at different operational states
Data Source
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AI summary
An information processing method and a communication node are disclosed. The method configured in a first Device-to-Device (D2D) User Equipment (UE) includes: receiving bearer control information sent by a first evolved Node B (eNB); and changing to a second access node according to the bearer control information for communication data transmission, wherein the first eNB is a first access node or the second access node, and the second access node is the first eNB or a D2D relay node. Also disclosed is a computer storage medium.