Wireless Beam Sweeping Synchronization for Faster Cell Alignment
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies and high power consumption during beam sweeping for serving and neighbor cells due to the need to consider each transmit beam individually, leading to prolonged sweeping times.
Innovation Solution
The method involves the terminal device receiving information from the network device about beam synchronization and offset values for neighbor cells, allowing it to determine beam directions and times more efficiently, thereby reducing power consumption and improving beam alignment speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal device performs beam sweeping for each transmit beam of serving and neighbor cells individually, then beam alignment accuracy is improved, but beam sweeping time and power consumption increase
Solution Approach 1:
The network device pre-determines the beam sweeping sequence for neighbor cells based on their geographic locations and sends this sequence information to the terminal device in advance. This allows the terminal device to perform beam sweeping efficiently without needing to individually test all possible beam combinations, thus reducing sweeping time while maintaining alignment accuracy.
Solution Approach 2:
The patent applies a unified beam sweeping sequence mechanism that can be used for both serving cell and multiple neighbor cells simultaneously. This multi-functional approach allows the terminal device to handle beam alignment for multiple cells using a single standardized procedure, reducing overall sweeping time compared to individual cell-by-cell sweeping.
2Measurement precision
If the terminal device performs beam sweeping for each transmit beam of serving and neighbor cells individually, then beam alignment accuracy is improved, but power consumption increases
Solution Approach 1:
The network device pre-determines the beam sweeping sequence for neighbor cells based on their geographic locations and sends this sequence information to the terminal device in advance. This allows the terminal device to perform beam sweeping efficiently without needing to individually test all possible beam combinations, thus reducing power consumption while maintaining alignment accuracy.
3Adaptability or versatility
If beam sweeping is performed without synchronization information, then beam alignment flexibility is maintained, but beam sweeping efficiency decreases
Solution Approach 1:
The network device pre-determines and communicates the beam sweeping sequence for neighbor cells in advance, allowing the terminal device to synchronize its beam sweeping operations with the network device's transmit beams. This synchronization enables efficient beam alignment while maintaining flexibility through the pre-configured sequence information.
Data Source
AI summary
The present disclosure provides a method and apparatus for wireless communication. One example method includes receiving first information from a network device, wherein the network device corresponds to a serving cell, wherein the first information includes at least one of: whether transmit beam sweeping performed by a first neighbor cell is synchronized with transmit beam sweeping performed by the serving cell; or an offset value of the transmit beam sweeping performed by the first neighbor cell relative to the transmit beam sweeping performed by the serving cell; and determining, based on the first information, a beam direction of at least one of a first transmit beam or a first receive beam on a first time unit.