Superimposing Spread Control With Modulated Data in Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in communicating control and data information, often requiring dedicated time and frequency resources for control information, which limits data transmission capacity.
Innovation Solution
The system employs orthogonal frequency division multiplexing (OFDM) for data information and code division multiplexing (CDM) for control information, allowing both to be transmitted using the same time-frequency resources, eliminating the need for reserved resources and increasing data transmission capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated time and frequency resources are reserved for control information transmission, then control information can be reliably communicated, but data transmission capacity is limited
Solution Approach 1:
The patent combines control information and data information into a single transmission resource, eliminating the need for separate dedicated resources. Control information is multiplexed with data information in the same time-frequency resources, allowing both to be transmitted simultaneously without requiring separate allocations, thus resolving the contradiction between reliable control communication and data transmission capacity.
Solution Approach 2:
The transmission resource is designed to serve multiple functions: it can carry both control information and data information simultaneously. This multi-functional resource allocation allows the same resource to fulfill both control and data transmission needs, eliminating the trade-off between the two functions.
2Reliability
If more resources are allocated to control information, then control communication quality improves, but overall system efficiency decreases
Solution Approach 1:
By merging control and data information transmission into a unified resource allocation scheme, the system eliminates the inefficiency of separate resource reservations. Control information is transmitted alongside data information without requiring additional dedicated resources, thereby improving system efficiency while maintaining control transmission quality.
3Reliability
If control information uses separate resources from data information, then interference between them is avoided, but resource utilization is reduced
Solution Approach 1:
The patent merges control and data information into the same transmission resource, achieving both goals: control information is reliably transmitted through proper signal processing and separation techniques, while resource utilization is maximized by eliminating idle reserved resources. The system uses signal separation methods to prevent interference while sharing resources.
Data Source
AI summary
A method of transmitting data information and control information is provided. The method includes encoding the control information and encoding the data information. The method further includes modulating the control information and modulating the data information. The method further includes spreading the modulated control information using a spreading code to generate spread control information. The method further includes superimposing the spread control information with the modulated data information. The method further includes transmitting the modulated data information with the superimposed spread control information.