Index Modulation Resource Shift for Wireless Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication networks face challenges in enhancing coverage and capacity, as existing techniques struggle to efficiently convey additional information bits without increasing resource usage or interference.
Innovation Solution
The implementation of index modulation (IM) by allocating transmission bit streams to sub-streams, determining an index based on these sub-streams, and applying shifts to contiguous resource sets within the network, effectively deactivating these sets to convey implicit information bits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional modulation techniques (amplitude, phase, frequency) are used to convey information bits, then information transmission is achieved, but resource usage increases and interference is generated
Solution Approach 1:
The patent changes the modulation parameter from traditional amplitude/phase/frequency to time-domain resource set position. By varying the starting position (index) of contiguous resource sets in the time domain, additional information bits are conveyed without increasing power or frequency resources, thus reducing resource usage and interference while transmitting more information.
2Reliability
If transmission power is increased to enhance coverage and signal quality, then signal-to-noise ratio improves, but resource usage and interference increase
Solution Approach 1:
The patent introduces a new dimension for information transmission by using the time-domain position index of resource sets instead of traditional power-based signal enhancement. This dimensional shift allows conveying additional bits through resource allocation patterns rather than increasing transmit power, thereby improving reliability without proportional energy consumption.
3Loss of energy
If contiguous resource sets are deactivated to reduce resource usage, then resource efficiency improves, but information transmission capacity decreases
Solution Approach 1:
The patent segments the resource set into multiple contiguous blocks and deactivates certain segments while transmitting information through the activation pattern. By dividing resources into segments and using the selection/position of active segments to encode information, the system reduces overall resource usage while maintaining transmission capacity through the segmentation pattern itself.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
Disclosed is a method comprising obtaining a transmission bit stream for transmission on at least one resource set, allocating the transmission bit stream, at least partly, to a sub-stream, determining an index based on the sub-stream, determining, based on the index, a shift of a contiguous resource set, wherein the contiguous resource set is a subset of the at least one resource set, applying the shift to the contiguous resource set, and deactivating the shifted contiguous resource set.