Dynamic Random Access Selection for UE Connection Efficiency
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Solution Overview
Problem
The existing random access procedures in user equipment (UE) for establishing a connection with a base station are time-consuming and have a low success rate, necessitating improvements in efficiency and reliability.
Innovation Solution
The UE dynamically selects a random access method based on configuration parameters from the network device, considering the current network status and neighboring cell conditions, allowing for flexible transmission opportunities and reducing conflicts with other uplink transmissions or measurement gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the traditional four-step random access procedure is used, then the connection establishment is reliable, but the access time is long and efficiency is low
Solution Approach 1:
The patent introduces dynamic random access selection where the UE can choose between two different random access procedures (first and second procedures) based on network conditions. The network device configures indication information that enables the UE to dynamically select the appropriate procedure, making the random access process adaptable rather than fixed, thus reducing access time while maintaining reliability
Solution Approach 2:
The patent changes the parameter of random access procedure selection by introducing configuration parameters from the network device. The UE uses these parameters (indication information, thresholds, etc.) to determine which random access procedure to execute, transforming the static four-step process into a parameter-driven dynamic process that can optimize performance based on current network state
2Adaptability or versatility
If the UE uses fixed random access procedure, then the process is simple, but it cannot adapt to different network statuses and causes transmission conflicts
Solution Approach 1:
The patent implements feedback mechanisms where the UE receives configuration information and indication information from the network device, measures downlink signal quality, and uses this feedback to determine the appropriate random access procedure. The UE compares measurement results against thresholds and adjusts its behavior accordingly, creating a closed-loop adaptive system that responds to network conditions
Solution Approach 2:
The network device performs preliminary configuration by sending configuration information and indication information to the UE before the random access process. This includes pre-configuring thresholds, measurement gaps, and transmission opportunity associations, so that when random access is needed, the UE can quickly make decisions without complex real-time calculations
3Productivity
If the UE transmits on all available opportunities, then the access speed increases, but conflicts with measurement gaps and other uplink transmissions occur
Solution Approach 1:
The patent applies local quality by treating different transmission opportunities differently based on their specific characteristics. The network device configures different associations between downlink signals and transmission opportunities, and the UE applies different rules to different opportunities (e.g., whether to consider measurement gaps, whether to allow conflicts with other uplink transmissions). This localized differentiation allows aggressive transmission where safe and conservative transmission where conflicts would occur
Data Source
AI summary
This technology of this application relates to a communication method and an apparatus. The method includes selecting, by user equipment (UE), a type of a random access message and determining one or more transmission opportunities based on one or more of a configuration message of a network device, a capability of the UE, and a preset rule set; and sending, by the UE, the random access message on one or more valid transmission opportunities in the one or more transmission opportunities. Types of random access messages include a first random access message and a second random access message, the first random access message includes a preamble sequence preamble and a physical uplink shared channel (PUSCH), and the second random access message includes a preamble but does not include a PUSCH.