Wireless Data Resource Mapping via Subband Segmentation
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently processing and transmitting data over large bandwidths, particularly when using grant-free spectrum resources, due to increased implementation complexity and latency associated with traditional resource mapping methods.
Innovation Solution
A new resource mapping method that divides data into subdata and maps them onto multiple subbands, allowing for simultaneous transmission and reception, reducing the need for high-bandwidth processing capabilities and minimizing latency by using a first-frequency-then-time sequence or first-time-then-frequency sequence mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an existing first-frequency-domain-then-time-domain mapping method is used, then the data transmission can be performed, but the communications device needs to have a large-bandwidth processing capability, increasing implementation complexity
Solution Approach 1:
The patent divides the large bandwidth carrier into multiple subbands and further segments data into subdata, mapping them to corresponding subbands. This segmentation allows the communications device to process smaller bandwidth segments independently, reducing the required processing capability and implementation complexity while maintaining overall system performance.
2Loss of time
If an existing first-time-domain-then-frequency-domain mapping method is used, then the data transmission can be performed, but the communications device needs to wait until an entire transmission period ends, increasing processing latency
Solution Approach 1:
The patent enables preliminary demodulation of physical channels by dividing data and mapping to subbands, allowing the communications device to start processing before the entire transmission period ends. This preliminary action reduces waiting time and processing latency while maintaining data transmission efficiency.
Solution Approach 2:
By segmenting data into subdata and mapping to different subbands, the patent enables parallel processing and early demodulation of completed subbands, eliminating the need to wait for the entire transmission period and thereby reducing processing latency.
3Quantity of substance
If a large bandwidth carrier is used for communication, then the data transmission capacity is increased, but the frequency resource needs to be divided into multiple subbands, requiring new resource mapping methods
Solution Approach 1:
The patent segments both the large bandwidth carrier into subbands and the data into subdata, establishing a systematic mapping relationship between them. This segmentation approach maintains high data transmission capacity while providing a structured, manageable resource allocation method that reduces complexity compared to handling large bandwidth as a single unit.
Data Source
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AI summary
This application provides a data sending and receiving method and apparatus. The method includes: obtaining, by a first device, first data, where the first data includes data obtained after a first transport block is encoded, the first data includes at least two pieces of subdata, and the at least two pieces of subdata include first subdata and second subdata; determining, by the first device, a first time-frequency resource used to transmit the first data, where the first time-frequency resource occupies at least two subbands, and the at least two subbands include a first subband and a second subband; and sending, by the first device, the first subdata by using the first subband occupied by the first time-frequency resource, and sending, by the first device, the second subdata by using the second subband occupied by the first time-frequency resource.