Random Access Frequency Resource Segmentation for Wireless Terminals
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Solution Overview
Problem
The existing random access process in communications technologies is prone to failure due to the limitation of using only one fixed frequency resource for sending messages, leading to delays and failures when the resource is occupied.
Innovation Solution
A method that involves receiving first resource configuration information indicating multiple frequency resources, sending a random access request on a free target first frequency resource, and receiving a random access response on a free target second frequency resource, thereby avoiding resource overlap and reducing delay and failure rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only one fixed frequency resource is used for sending random access messages, then the device complexity is reduced, but the reliability of random access deteriorates due to resource occupation and failure
Solution Approach 1:
The patent divides the frequency resources into multiple separate resources (first frequency resource for random access request, second frequency resource for random access response, third frequency resource for uplink data) instead of using a single fixed frequency resource. This segmentation allows different messages to be transmitted on different frequency resources, avoiding resource occupation and improving random access reliability.
2Ease of operation
If only one fixed frequency resource is used for random access messages, then the ease of operation is improved, but the loss of time increases due to delays caused by resource occupation
Solution Approach 1:
By segmenting frequency resources into multiple dedicated resources for different message types, the patent eliminates the need for retransmission delays caused by resource occupation. Each message has its own dedicated frequency resource, ensuring timely transmission and reducing random access delay.
3Reliability
If multiple frequency resources are allocated for different random access messages, then the reliability of random access is improved by avoiding resource overlap, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by allocating separate frequency resources for different message types (random access request, random access response, uplink data). This clear separation simplifies resource management compared to dynamic allocation, as each message type has a predetermined frequency resource, reducing the complexity of real-time resource scheduling while improving reliability.
4Productivity
If multiple frequency resources are used for random access messages, then the productivity of random access process is improved by reducing failure rates, but the device complexity increases
Solution Approach 1:
By segmenting frequency resources into multiple dedicated resources, the patent eliminates retransmission requirements caused by resource occupation failures. This improves random access efficiency and productivity by ensuring successful transmission in the first attempt, while the predetermined resource allocation keeps the increase in device complexity manageable.
Data Source
AI summary
A random access method, a terminal, and a network device are provided. The method performed by the network device includes: sending first resource configuration information to the terminal, where the first resource configuration information is used to indicate M first frequency resources and N second frequency resources, and M and N are positive integers greater than or equal to 1; receiving a random access request sent by the terminal on a target first frequency resource; and sending a random access response on a target second frequency resource to the terminal, wherein the target first frequency resource is a free frequency resource in the M first frequency resources, and the target second frequency resource is a free frequency resource in the N second frequency resources.