TDD Antenna Sector Switch Synchronization
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Solution Overview
Problem
Current mmWave TDD network systems lack a standardized and robust procedure for antenna sector switching, leading to potential link disconnections and data loss due to asynchronous sector changes without proper notification between communicating devices.
Innovation Solution
A TDD antenna sector switch system that synchronizes the switch of transmit and receive sectors using beamforming results and measurements, with a centralized network management approach to coordinate sector changes through multiple message exchanges and timestamped configurations, ensuring robustness and minimizing link disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If antenna sector switching is performed without standardized coordination procedure, then sector switching flexibility is improved, but link reliability deteriorates due to asynchronous sector changes and potential disconnections
Solution Approach 1:
The patent applies preliminary action by having the initiating device send a sector switch indication message to the responding device before actually switching sectors. This allows the responding device to prepare for the sector change in advance, ensuring both devices are synchronized and preventing link disconnections. The timestamp included in the message enables the responding device to know exactly when to switch, maintaining reliability while allowing flexible sector changes.
2Reliability
If centralized coordination message exchange is implemented for sector switching, then link reliability is improved through synchronized changes, but system complexity increases due to multiple message exchanges and coordination overhead
Solution Approach 1:
The patent extracts the coordination function to a centralized network management entity that handles sector switching decisions. The access point or network controller determines when sector switching is needed and coordinates the change, removing the complexity of peer-to-peer negotiation from the wireless devices themselves. This centralization simplifies the protocol at the device level while maintaining reliable synchronized switching through centralized control.
3Ease of operation
If asynchronous sector switching occurs without notification, then device operation simplicity is maintained, but data loss increases due to link disconnections
Solution Approach 1:
The patent implements feedback by requiring the responding device to send an acknowledgment message back to the initiating device after receiving the sector switch indication. This confirmation feedback ensures that both devices have properly registered the sector change timing, preventing data loss due to asynchronous switching. The feedback mechanism maintains operational simplicity while guaranteeing synchronized sector transitions through mutual confirmation.
Data Source
AI summary
This disclosure describes systems, methods, and devices related to a time division duplex (TDD) antenna sector switch. A device may determine one or more antenna sector configurations based on TDD beamforming, wherein the one or more antenna sector configurations are associated with first antenna sectors used to communicate with a first station device (STA). The device may initiate a TDD sector switch with the first STA to switch from the one or more first antenna sectors to one or more second antenna sectors. The device may cause to send, to the first STA, an action frame comprising TDD sector setting parameters associated with the TDD sector switch. The device may identify a response frame received from the first STA, wherein the response frame comprises the TDD sector setting parameters. The device may perform the TDD sector switch by switching from the one or more first antenna sectors to the one or more second antenna sectors.