5G Reference Signal Sequence Generation for Interference Management
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Solution Overview
Problem
The existing methods for generating reference signals in LTE systems are inadequate for managing interference in the diversified transmission environments of 5G wireless communication systems, particularly due to increased cell IDs, scrambling IDs, and varied numerologies.
Innovation Solution
A method and apparatus for generating a reference signal sequence in 5G wireless communication systems, involving the extension of sequence length, modulo operation of time/frequency resource indices, and adjustment of combined formulas using various input values to support diverse structures and subcarrier spacings, ensuring efficient interference management and radio resource transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If LTE reference signal generation methods are used in 5G systems, then implementation simplicity is maintained, but interference management capability deteriorates due to increased cell IDs, scrambling IDs, and varied numerologies
Solution Approach 1:
The patent modifies the reference signal generation parameters by extending the sequence length from 31 to 63, adjusting the initialization values to accommodate increased cell IDs and scrambling IDs in 5G, and adapting the formula structure to support varied numerologies. These parameter changes enable the reference signal to function effectively in 5G's more complex environment while maintaining the fundamental generation mechanism.
2Reliability
If sequence length is extended to support 5G requirements, then interference management capability is improved, but computational complexity increases
Solution Approach 1:
The patent segments the reference signal generation process into distinct stages: generating separate m-sequences with specific lengths, combining them through modulo-2 addition, and applying initialization values at different stages. This segmentation allows each component to be optimized independently, managing computational complexity while achieving the required sequence length for 5G interference management.
3Adaptability or versatility
If reference signal sequence is adapted for diverse 5G structures and subcarrier spacings, then adaptability is improved, but system complexity increases
Solution Approach 1:
The patent creates a universal reference signal generation framework that can accommodate diverse 5G structures and subcarrier spacings through a unified mathematical model. The extended sequence length and flexible initialization mechanism provide multi-functionality, allowing the same generation process to serve different numerologies and reference signal types without requiring separate specialized procedures for each case.
Data Source
AI summary
The present disclosure pertains to a method and an apparatus for generating a reference signal (RS) sequence and a data scrambling sequence. A method for a base station transmitting a reference signal according to an embodiment of the present disclosure may comprise the steps of: generating a reference signal sequence; and transmitting a reference signal corresponding to the generated reference signal sequence. The reference signal sequence can be generated using an initial sequence that is determined using a slot number in a transmission frame, a symbol number in a slot, and a scrambling identifier (ID).