Discovery Preamble for Wireless Device Beam Sweep
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Solution Overview
Problem
Existing wireless communication systems face high overhead and resource inefficiencies during device discovery procedures, particularly in beamforming deployments, where transmitting and processing large amounts of data for beam sweeping consume significant resources and power, often with little guarantee of reaching intended receivers.
Innovation Solution
The implementation of a discovery preamble that is smaller than the discovery message, allowing for efficient beam sweep procedures by indicating the upcoming transmission of the discovery message. This preamble can be transmitted as part of a beam sweep procedure, reducing resource usage and identifying receiving devices or suitable beams for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam sweep procedures are performed using traditional discovery messages, then device discovery capability is achieved, but resource consumption and overhead increase significantly
Solution Approach 1:
The discovery message is segmented into two parts: a discovery preamble and a discovery message payload. The preamble contains essential information for beam sweep procedures, while the payload contains additional discovery information. This segmentation allows the system to transmit only the necessary preamble during beam sweeps, reducing resource consumption while maintaining discovery capability.
Solution Approach 2:
The essential discovery information is extracted into a separate discovery preamble that can be transmitted independently during beam sweep procedures. This extraction allows the system to perform beam sweeps with minimal overhead, and only transmit the full discovery message when actually received by a target device, thereby reducing resource consumption.
2Reliability
If beam sweep procedures are performed using traditional discovery messages, then device discovery capability is achieved, but power consumption increases
Solution Approach 1:
The discovery message is segmented into a preamble and payload, allowing the system to transmit only the lightweight preamble during beam sweeps. This reduces the energy required for transmission while maintaining the ability to discover devices. The full message is only transmitted when a receiver is confirmed, further conserving power.
Solution Approach 2:
Essential beam sweep information is extracted into a separate preamble that requires minimal transmission power. This extraction enables the system to perform multiple low-power beam sweep transmissions without the overhead of transmitting full discovery messages, significantly reducing overall power consumption.
3Loss of information
If traditional discovery messages are transmitted during beam sweeps, then complete discovery information is provided, but resource wastage occurs when no receiver is present
Solution Approach 1:
The discovery information is segmented into a preamble that can be transmitted during beam sweeps and a payload that contains additional information. The preamble transmission during beam sweeps incurs minimal resource wastage since it is lightweight, while the complete information is only transmitted in the payload when a receiver is confirmed to be present.
Solution Approach 2:
The essential information needed for beam sweep operations is extracted into a separate preamble that can be transmitted efficiently during beam sweeps. This extraction ensures that minimal resources are wasted when no receiver is present, while still providing sufficient information for the beam sweep procedure to function effectively.
Data Source
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AI summary
Techniques are described for performing beam sweep procedures as part of a device discovery procedure. A transmitting device (e.g., user equipment (UE) or base station) may generate a discovery preamble that is configured to indicate that a discovery message will be transmitted. The discovery preamble may be a smaller message (e.g., less bits) than the discovery message and thus may use fewer resources when it is being communicated. The transmitting device may transmit a plurality of signals that include a discovery preamble as part of beam sweep procedure. Once the transmitting device identifies a receiving device, the transmitting device may broadcast the discovery message. The discovery preamble may include a variety of different types of information including information relating to an identifier for the transmitting device, a discovery mode of the transmitting device, beam configurations, communication resources, beam sweep indexes, or a combination thereof.