Beam Direction Determination for Millimeter-Wave Communication
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Solution Overview
Problem
High-frequency communication systems, such as those using millimeter-waves, face challenges in determining initial beam directions due to high pathloss and the need for high gain antennas, making it difficult to establish efficient connections, especially in scenarios with Line-Of-Sight (LOS) or Non-Line-Of-Sight (NLOS) paths.
Innovation Solution
A processing apparatus that utilizes 3-dimensional environmental data and GPS location information to determine beam directions through ray-tracing algorithms, allowing for the calculation of initial beam directions for mm-wave communication systems, and updates these directions based on radio link quality to improve communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high gain antennas with steerable beams are used to overcome high pathloss in mm-wave communication, then communication reliability is improved, but device complexity increases due to the need for precise beam direction determination
Solution Approach 1:
The system performs preliminary channel sounding before actual data transmission to determine the optimal beam direction. The beam management entity conducts channel measurements and identifies the best beam direction in advance, so that when data transmission begins, the beam is already correctly oriented, avoiding the need for complex real-time direction determination during communication
Solution Approach 2:
A beam management entity is introduced as an intermediary between the physical layer and higher layers. This entity consolidates the complex functions of beam determination, channel sounding, and direction calculation, simplifying the overall system architecture while maintaining reliable communication through precise beam control
2Measurement precision
If beam directions are determined using traditional channel estimation from highly attenuated signals, then beamforming accuracy can be achieved, but the process becomes difficult and time-consuming due to signal attenuation
Solution Approach 1:
Channel sounding is performed in advance during an initial access phase before actual data transmission. The beam management entity uses this preliminary channel information to determine optimal beam directions, so that when data transmission begins, the beams are already correctly oriented, eliminating the need for time-consuming real-time channel estimation during high-rate data transmission
Solution Approach 2:
The system dynamically adjusts beam directions based on channel conditions. The beam management entity continuously monitors channel quality and updates beam directions as needed, allowing the system to adapt to changing propagation conditions while maintaining accurate beamforming without constant re-estimation
3Ease of operation
If omnibearing communication is used to establish initial connection, then ease of operation is improved, but communication efficiency deteriorates due to lower signal strength and inability to exploit directional paths
Solution Approach 1:
The communication process is segmented into distinct phases: initial omnidirectional connection establishment, followed by channel sounding, and finally directional beam-based data transmission. This segmentation allows the system to first establish connectivity easily using omnidirectional transmission, then transition to efficient directional communication for actual data transfer, combining the advantages of both approaches
Solution Approach 2:
The system dynamically transitions from omnidirectional to directional transmission modes. Initially, omnidirectional transmission is used for easy connection establishment and channel exploration. Once the optimal beam direction is determined through channel sounding, the system dynamically switches to directional beam transmission to maximize communication efficiency for the remainder of the session
Data Source
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AI summary
Embodiments provide apparatuses, methods and computer programs for determining information related to a path direction for a communication system (400). A processing apparatus (20) for determining information related to a path direction for a communication system (400) comprises a transceiver module (22), which is operable to obtain information related to a position of a transceiver device (10). The apparatus (20) further comprises a storage module (24), which is operable to store information related to environmental data of the communication system (400), and a processing module (26), which is operable to process the information related to the position of the transceiver device (10) based on the stored information related to the environmental data to obtain information related to a path direction. The transceiver module (22) is operable to provide the information related to the path direction to the transceiver device (10). An apparatus (10) for a transceiver (100) of a communication system (400) comprises a first transceiver module (12) operable to wirelessly communicate with another transceiver (300) of the communication system (400). The first transceiver module (12) is operable to use a directive antenna (30) to communicate with the other transceiver (300). The apparatus (10) further comprises a location module (14), which is operable to determine information related to a position of the apparatus (10). The apparatus (10) further comprises a second transceiver module (16), which is operable to communicate with a processing device (20) and which is different from the other transceiver (300). The transceiver module (16) is operable to provide the information related to the position of the apparatus (10) to the processing device (20), and to obtain information related to a path direction from the processing device (20). The first transceiver module (12) is further operable to use the directive antenna (30) based on the information related to the path direction.