Random Access Resource Configuration for Multi-Beam Sweeping
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Solution Overview
Problem
Current random access methods in LTE systems are inadequate for scenarios involving multi-beam sweeping by base stations or terminals, leading to failed connections due to mismatched beam calibration and inefficient data transmission.
Innovation Solution
Configuring two types of random access resources, a first-type and a second-type, where the first-type is associated with different downlink signals and the second-type is not, or associated in a different manner, allowing terminals to select the appropriate resource based on signal quality and beam form for optimal preamble transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single type of random access resource is used in LTE systems, then the system structure remains simple, but the system cannot adapt to multi-beam sweeping scenarios and experiences connection failures
Solution Approach 1:
The patent divides random access resources into two distinct types: first-type resources associated with downlink signals (for calibrated beam scenarios) and second-type resources not associated with downlink signals (for uncalibrated beam scenarios). This segmentation allows the system to handle different beam calibration states separately, improving adaptability to multi-beam sweeping while maintaining clear configuration rules for each type.
Solution Approach 2:
The patent introduces dynamic selection of random access resource types based on terminal movement state and beam calibration status. Terminals can switch between first-type and second-type resources dynamically, enabling the system to adapt to changing conditions such as high-speed movement or uncalibrated beams without requiring complete reconfiguration of the access mechanism.
2Reliability
If random access resources are strictly associated with downlink signals, then beam calibration is maintained, but terminals experiencing beam misalignment or high-speed movement cannot successfully access the network
Solution Approach 1:
The patent changes the association parameter between random access resources and downlink signals by introducing two types: first-type with association (for calibrated scenarios) and second-type without association (for uncalibrated scenarios). This parameter change allows terminals to select appropriate resources based on current beam calibration status, improving connection reliability across diverse conditions.
Solution Approach 2:
The patent introduces a selection mechanism that acts as an intermediary between the terminal and the base station. This mechanism determines which type of random access resource the terminal should use based on downlink signal quality and beam calibration status, enabling reliable connection establishment even when direct signal association is not possible due to uncalibrated beams or high-speed movement.
3Adaptability or versatility
If the terminal uses a fixed random access resource type, then the configuration process is simple, but the system cannot adapt to varying signal conditions and terminal movement states
Solution Approach 1:
The patent enables terminals to autonomously select between first-type and second-type random access resources based on their own measurement of downlink signal quality and determination of beam calibration status. This self-service approach allows adaptation to varying signal conditions without requiring complex network-controlled resource assignment, maintaining ease of operation while improving versatility.
Data Source
AI summary
A method includes: configuring, by a base station, at least two types of random access resources, where the at least two types of random access resources include a first-type random access resource and a second-type random access resource; and different types of random access resources are in a one-to-one correspondence with different sending beam forms of a terminal; or the first-type random access resource is associated with resources of different downlink signals, and the second-type random access resource is not associated with the resources of the different downlink signals.