RedCap Terminal Processing for Reliable ≤5 MHz Wireless Procedures
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Solution Overview
Problem
RedCap terminals with reduced bandwidth capabilities face challenges in executing communication procedures such as random access and small data transmission effectively due to limitations in frequency domain resource allocation and processing time requirements.
Innovation Solution
The terminal processes target transmissions based on a bandwidth capability of 5 MHz or less, including downlink and uplink transmissions, by managing frequency domain resources and processing times to ensure compatibility with network scheduling while reducing complexity and ensuring reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If RedCap terminals use reduced bandwidth capability (≤5 MHz) to lower device complexity and cost, then device complexity is reduced, but communication performance and resource allocation flexibility deteriorate
Solution Approach 1:
The patent changes the time parameter by extending the processing time for RedCap terminals. Specifically, it introduces a extended time window for receiving downlink transmissions and preparing uplink transmissions, allowing terminals with reduced bandwidth capability to process signals more slowly while maintaining communication reliability. This parameter adjustment resolves the contradiction by accommodating lower processing speeds without compromising communication performance.
Solution Approach 2:
The patent implements dynamic time resource allocation based on terminal capability. The network device dynamically adjusts the time window configuration according to whether the terminal is a RedCap terminal or not, allowing flexible adaptation of processing time requirements. This dynamic approach enables the system to optimize resource allocation for different terminal types, resolving the adaptability issue while maintaining low complexity for RedCap terminals.
2Speed
If RedCap terminals allocate fewer frequency domain resources to reduce processing load, then processing speed is improved, but communication reliability and data transmission capacity deteriorate
Solution Approach 1:
The patent changes the time parameter to compensate for reduced frequency domain resources. By extending the processing time window, RedCap terminals can perform more thorough signal processing and error checking despite having fewer frequency resources, thereby maintaining communication reliability while keeping processing load manageable.
Solution Approach 2:
The patent applies partial action by having RedCap terminals process only the necessary portion of downlink transmissions within the extended time window, rather than attempting to process all possible data at high speed. This selective processing approach ensures reliable communication for the allocated resources without requiring excessive processing capability.
3Reliability
If RedCap terminals use extended processing time to handle limited bandwidth, then communication reliability is improved, but time resource efficiency and network throughput deteriorate
Solution Approach 1:
The patent segments the time resources by introducing separate time windows for different terminal types. RedCap terminals are allocated extended time windows specifically tailored to their processing capabilities, while other terminals use standard time windows. This segmentation allows the network to optimize time resource utilization for each terminal type, improving overall time efficiency while maintaining reliability for RedCap terminals.
Solution Approach 2:
The patent implements dynamic time resource allocation where the network device adjusts time window configurations based on terminal capability indications. This dynamic approach ensures that extended processing time is only used when necessary for RedCap terminals, rather than universally, thereby minimizing time resource loss while maintaining communication reliability for bandwidth-constrained terminals.
Data Source
AI summary
A communication method and apparatus, and a terminal, and pertains to the field of wireless communication. The communication method according to an embodiment of this application includes: processing, by a terminal, a target transmission based on bandwidth capability; where the bandwidth capability of the terminal is a predetermined value, the predetermined value is less than or equal to 5 MHz, and the target transmission includes a first downlink transmission and/or a first uplink transmission.