Node-Specific Permutation of Positioning Beacon Beam Transmission Order
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks operating at millimeter wave frequencies, propagation loss and interference from multiple beams transmitted by adjacent nodes hinder precise positioning and data communication due to the use of beams with higher signal strength that may travel longer paths, leading to delayed signal arrival and increased interference.
Innovation Solution
The method involves transmitting positioning beacon beams in a permuted order based on a cell-specific pseudorandom sequence initialization, allowing for interference mitigation without muting nodes, by altering the beam transmission sequence in each time period to reduce persistent collisions and enhance signal detection for position estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If beamforming is used to extend RF signal coverage at mmW frequencies, then signal strength is improved, but propagation loss increases due to higher frequencies
Solution Approach 1:
The patent implements periodic beam sweeping where beams are transmitted in repeated sequences across different time periods. By periodically transmitting beams in a swept manner through multiple directions, the system ensures that positioning beacons reach receivers despite propagation losses at mmW frequencies, as the periodic repetition increases the probability of successful reception.
Solution Approach 2:
The patent dynamically adjusts beam transmission by changing the order of beam transmission across different time periods using permuted sequences. This dynamic reordering allows the system to adapt to varying channel conditions and interference patterns, optimizing signal delivery while compensating for propagation losses through multiple transmission opportunities.
2Measurement precision
If multiple beams are transmitted by adjacent nodes to support positioning, then positioning accuracy is improved, but interference increases due to beam collisions
Solution Approach 1:
The patent applies preliminary action by pre-planning and coordinating beam transmission orders among adjacent nodes before actual transmission. Each node is assigned a specific beam transmission sequence in advance, which prevents beam collisions and interference from the outset, allowing multiple nodes to transmit positioning beacons simultaneously without degrading positioning accuracy.
Solution Approach 2:
The patent introduces dynamic beam order permutation where the transmission order of beams is changed across different time periods using different permuted sequences. This dynamic approach allows the system to adapt to changing interference conditions and ensures that beams from adjacent nodes do not consistently collide, thereby maintaining positioning accuracy while supporting multiple simultaneous transmissions.
3Ease of operation
If beam transmission order remains fixed to simplify system operation, then ease of operation is improved, but interference from persistent beam collisions increases
Solution Approach 1:
The patent implements dynamic beam transmission by changing the order of beam transmission across different time periods through permutation. This dynamic reordering is achieved through pre-configured sequences that automatically vary the transmission order, maintaining system simplicity while effectively reducing persistent beam collisions and interference between adjacent nodes.
Solution Approach 2:
The patent changes the transmission parameter of beam order by applying permutations to the sequence of beam transmissions across different time periods. This parameter change is implemented through pre-defined permuted sequences that automatically alter the transmission order without requiring complex real-time control, thus reducing interference while maintaining operational simplicity.
4Object-generated harmful factors
If nodes are muted to reduce interference, then interference is reduced, but network efficiency decreases
Solution Approach 1:
The patent applies preliminary action by pre-coordinating beam transmission orders among adjacent nodes before transmission begins. This advance coordination allows all nodes to transmit positioning beacons simultaneously without interference, eliminating the need to mute any nodes and thereby maintaining full network efficiency while reducing interference through intelligent scheduling.
Solution Approach 2:
The patent uses dynamic beam order permutation to allow continuous transmission from all nodes without muting. By dynamically changing the transmission order through pre-configured permutations, the system enables all nodes to operate simultaneously without causing persistent interference, thus maintaining network efficiency while achieving interference reduction.
Data Source
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AI summary
Disclosed are techniques and apparatuses for transmitting positioning beacon beams including transmitting a plurality of positioning beacon beams from a first node in a first time period using a first order of transmission. Then, the first node transmits the plurality of positioning beacon beams from a second time period using a second order of transmission, where the first order of transmission is different in the second order of transmission.