PUCCH Resource Multiplexing with CDM, TDM, and FDM
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing uplink control resources, particularly in scenarios requiring enhanced mobile broadband and massive machine type communications, where reliability and latency-sensitive services are critical.
Innovation Solution
The method and apparatus employ code division multiplexing (CDM), time division multiplexing (TDM), and frequency division multiplexing (FDM) techniques to enhance uplink control resources in wireless communication systems, allowing terminals to utilize a 5 MHz band and differentiate uplink control information transmission through orthogonal cover codes, start symbol configurations, and additional PRB offsets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional uplink control resource allocation is used, then system simplicity is maintained, but uplink control resource capacity is insufficient for eMBB and massive MTC services
Solution Approach 1:
The patent segments uplink control resources by creating multiple PUCCH resource sets with different configurations (first set for legacy UEs, second set for 5 MHz band UEs). This segmentation allows different terminal types to use dedicated resource pools, increasing overall resource capacity while maintaining manageable complexity through structured organization.
Solution Approach 2:
The patent introduces a new dimension for resource differentiation by applying CDM, TDM, and FDM techniques to distinguish PUCCH resources. Specifically, it adds frequency dimension (different PRB offsets), time dimension (different start symbols), and code dimension (different orthogonal cover codes) to create multiplexed resource structures that increase capacity without linearly increasing system complexity.
2Quantity of substance
If CDM, TDM, and FDM techniques are applied to differentiate PUCCH resources, then uplink control resource capacity increases, but resource allocation complexity increases
Solution Approach 1:
The patent applies local quality by configuring specific CDM, TDM, and FDM parameters locally for different PUCCH resource sets. The first resource set uses conventional configurations suitable for legacy UEs, while the second resource set uses optimized configurations (different cyclic shifts, OCC lengths, PRB offsets, start symbols) tailored for 5 MHz band UEs. This localized optimization increases resource capacity while keeping each subset manageable.
Solution Approach 2:
The patent changes key parameters to differentiate resource sets: cyclic shift values, orthogonal cover code lengths, physical resource block offsets, and start symbol positions. By systematically varying these parameters across different resource sets, the patent creates distinguishable resource allocations that increase capacity while maintaining configuration manageability through parameter-based differentiation.
3Reliability
If dedicated PUCCH resource sets are configured for different terminal types, then service reliability for eMBB and massive MTC is improved, but system configuration complexity increases
Solution Approach 1:
The patent achieves universality by creating a unified PUCCH resource allocation framework that serves both legacy UEs and 5 MHz band UEs through a common signaling mechanism. The base station uses a single type of indication signaling to allocate resources from appropriate sets, and UEs follow a unified resource selection procedure based on their type. This multi-functional approach improves service reliability for different scenarios while avoiding separate configuration systems.
Solution Approach 2:
Instead of having UEs independently configure resources or requiring complex dedicated signaling for each UE type, the patent inverts the approach by having the base station indicate resource set selection through compact signaling. The UE type determines which resource set to use, and the base station's indication signaling efficiently maps UEs to appropriate resources. This inversion reduces configuration complexity while maintaining high reliability through centralized resource management.
Data Source
AI summary
The present disclosure relates to a method for operating a terminal in a wireless communication system, and the method may include receiving, by the terminal, an SSB, receiving system information based on the SSB from a base station, and performing uplink transmission by a PUCCH resource allocated through an index indicating a common PUCCH resource set included in the system information. Herein, based on the terminal being a first type terminal, uplink control information may be transmitted from the terminal to the base station through a PUCCH resource that is configured through the PUCCH resource set based on the index, and based on the terminal being a second type terminal, the uplink transmission may be performed through a resource that is distinguished by applying at least one of CDM, TDM and FDM to the PUCCH resource that is configured through the PUCCH resource set based on the index.