Millimeter-Wave Channel Slot Allocation for Fast Link Switching
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Solution Overview
Problem
Existing millimeter-wave communication systems face high path loss and directional constraints due to beamforming, leading to significant delays and service disruptions when transmission paths are blocked or faulty.
Innovation Solution
A method for channel resource allocation that divides millimeter-wave radio channels into multiple slots, allowing data transmission on different links, enabling quick switching to fault-free links and reducing delays by dynamically adjusting time-frequency resources based on real-time monitoring and reference information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If beamforming is used to concentrate energy in a specific direction to compensate for transmission loss, then antenna gain is improved, but transmission path blocking becomes a critical issue causing service disruption
Solution Approach 1:
The patent segments the transmission path into multiple alternative paths between the same communicating parties. Each path is assigned a unique identifier, and the system maintains multiple path records simultaneously. This allows the communication system to switch between segmented paths when one path is blocked, resolving the contradiction between using directional beamforming for gain and maintaining reliability against path blocking.
2Reliability
If the transmission path is blocked and path reselection is performed, then transmission reliability is restored, but communication delay increases significantly
Solution Approach 1:
The patent performs preliminary actions by pre-establishing multiple transmission paths and pre-obtaining alternative path information before blocking occurs. The communicating parties exchange path information in advance, so when a path is blocked, the system can immediately switch to a pre-known alternative path without performing time-consuming path discovery and reselection, thus reducing path switching delay while maintaining reliability.
3Device complexity
If a single transmission path is used for communication, then resource allocation is simple, but service continuity is disrupted when the path is blocked
Solution Approach 1:
The patent makes the transmission path resource universal by enabling the same resource to serve multiple functions: it can be used as a primary path for normal communication or as an alternative path when another path is blocked. The path information structure is designed to be multi-functional, supporting both active communication and standby replacement roles, thus improving service continuity without significantly increasing resource allocation complexity.
Data Source
AI summary
A channel resource allocation method includes establishing, by a first network device, at least two links between the first network device and a second network device, where each link supports beamforming data transmission; obtaining, by the first network device, a millimeter-wave radio channel resource between the first network device and the second network device; dividing the radio channel resource into a plurality of slots, where each slot is used for data transmission on one link, and two adjacent slots correspond to two different links; and transmitting, by the first network device, data on a corresponding link in the plurality of slots.