Uplink Spatial Parameter Management for Multi-Cell Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing uplink transmission and reception based on spatial parameters, particularly in extending the candidates of spatial parameters applicable to multiple cells in a wireless communication system.
Innovation Solution
A method and apparatus for performing uplink transmission and reception by receiving information on specific spatial parameters from a base station, which includes spatial parameter candidates related to both the serving cell and other cells, allowing for flexible uplink transmission and reception across multiple cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If spatial parameter candidates are limited to only the serving cell, then the device complexity is reduced, but the adaptability and versatility of uplink transmission/reception are insufficient
Solution Approach 1:
The patent segments spatial parameter candidates into two distinct sets: a first set related to the serving cell and a second set related to other cells. This segmentation allows the system to manage spatial parameters for multiple cells independently while maintaining clear organizational structure, thereby improving adaptability without proportionally increasing complexity.
Solution Approach 2:
The patent creates a universal spatial parameter candidate pool that can be applied across multiple cells (serving cell and other cells). By defining spatial parameter candidates that are not cell-specific but rather system-wide, the patent enables these candidates to serve multiple functions and multiple cells simultaneously, improving versatility while avoiding redundant parameter management.
2Adaptability or versatility
If spatial parameter candidates include multiple cells, then the flexibility of uplink transmission/reception is improved, but the difficulty of detecting and measuring spatial parameters increases
Solution Approach 1:
The patent introduces the base station as an intermediary that centrally manages and coordinates spatial parameter candidates across multiple cells. The base station receives, determines, and notifies UE of the specific spatial parameter to be used, acting as a mediator that simplifies the detection and measurement process for the UE while still enabling multi-cell flexibility.
Solution Approach 2:
The patent establishes spatial parameter candidates in advance through base station configuration before actual uplink transmission/reception occurs. By pre-defining and notifying the UE of available spatial parameter candidates and the specific parameter to use, the system prepares the spatial parameter selection beforehand, reducing the real-time detection and measurement burden during actual transmission.
3Reliability
If spatial parameter selection is centralized at base station, then the reliability of uplink transmission/reception is improved, but the loss of time for parameter negotiation increases
Solution Approach 1:
The patent performs spatial parameter selection and notification in advance through base station configuration messages before actual uplink transmission/reception begins. By determining and notifying the specific spatial parameter to be used beforehand, the system ensures reliable parameter selection while minimizing the time loss during the actual transmission process, as the parameter selection is already completed.
Data Source
AI summary
A method and an apparatus for uplink transmission and reception based on a spatial parameter in a wireless communication system are disclosed. A method for performing uplink transmission by a user equipment (UE) in a wireless communication system according to an embodiment of the present disclosure may comprise: receiving, from a base station (BS), information on a specific spatial parameter among spatial parameter candidates including at least one of a first set of spatial parameters or a second set of spatial parameters; and performing the uplink transmission, to the BS, based on the specific spatial parameter, and the first set of spatial parameter may include at least one spatial parameter candidate related to a first cell and a first type of a reference signal (RS).