Secured Message Segmentation Over Beam Pair Links
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Solution Overview
Problem
High pathloss in 5G New Radio systems operating at high frequencies, such as millimeter wave frequencies, complicates communications and increases processing and communication overhead when securing transmissions, particularly due to the directional nature of beamformed beams.
Innovation Solution
The method involves generating an encoded and secured message that is split into parts and transmitted over multiple beam pair links, ensuring each part is received over a single link, which helps in achieving low network layer security, reducing the need for complex security techniques at the physical layer and minimizing the probability of unintended recipients receiving the message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strong encryption codes are used at the high network layer to secure transmissions, then transmission security is improved, but processing overhead and communications overhead increase significantly
Solution Approach 1:
The message is divided into multiple parts and transmitted over different beam pair links. Each part is individually encoded and modulated. This segmentation allows the system to achieve security through spatial distribution rather than relying solely on complex encryption, thereby reducing processing overhead while maintaining transmission security.
Solution Approach 2:
Beamforming is introduced as an intermediary mechanism to provide physical layer security. By using directional beams and spatial filtering, the system creates a natural barrier against eavesdropping, reducing the need for strong encryption codes and associated processing overhead.
2Stress or pressure
If beamforming is used to overcome high pathloss at high frequencies, then signal strength is improved, but the directional nature of beams complicates communications and causes temporal link quality degradation when misaligned
Solution Approach 1:
The message is divided into multiple parts transmitted over different beam pair links. This segmentation provides diversity against beam misalignment, as the receiver can combine parts from multiple beams even if some beams are temporarily misaligned, reducing temporal link quality degradation.
Solution Approach 2:
The system dynamically selects and switches between multiple beam pair links for transmitting different message parts. This dynamic adaptation allows the system to respond to changing channel conditions and maintain communication reliability despite beam misalignment issues.
3Reliability
If messages are transmitted over multiple beam pair links to improve reliability, then transmission robustness is improved, but the complexity of managing multiple links increases
Solution Approach 1:
The message is segmented into parts that are independently transmitted over different beam pair links. Each part is self-contained and can be independently received and decoded, simplifying the management of multiple links compared to complex multi-antenna schemes requiring precise phase and amplitude coordination.
Solution Approach 2:
Multiple copies of message parts are transmitted over different beam pair links using similar transmission protocols and structures. This copying approach with consistent formats simplifies receiver processing and link management compared to handling fundamentally different transmission modes.
Data Source
AI summary
A method includes generating an encoded and secured message comprising at least two parts, and transmitting the at least two parts of the encoded and secured message over at least two beam pair links (BPLs) associated with the first device and the second device, each part of the at least two parts being transmitted over a single BPL.