Beam Linkage State Mapping for Uplink/Downlink Transmission
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Solution Overview
Problem
The existing mobile communication systems face challenges in managing beam linkage states for efficient uplink/downlink transmission/reception, particularly in high-capacity and low-latency scenarios, necessitating improved methods for configuring and activating beam linkage states and determining spatial parameters for target transmission/reception.
Innovation Solution
A method and apparatus for performing uplink/downlink transmission/reception based on beam linkage states, involving the reception of information on beam linkage state (BLS) and spatial parameters from a base station, and applying these parameters for specific target transmissions/receptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam linkage states are configured and activated for uplink/downlink transmission/reception, then communication system capacity and performance are improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent segments beam linkage state management by separating reference transmission/reception configuration from target transmission/reception configuration. The base station configures beam linkage states that associate reference signals with target signals, allowing UE to apply spatial parameters from reference to target transmissions. This segmentation reduces signaling overhead by avoiding redundant configuration of identical parameters for each transmission.
Solution Approach 2:
The patent implements preliminary action by pre-configuring beam linkage states and spatial parameters before actual uplink/downlink transmission/reception occurs. The base station provides UE with beam linkage state information including mapping relationships between reference and target transmissions, enabling UE to prepare spatial parameter applications in advance, thus reducing real-time processing complexity.
2Productivity
If spatial parameters are determined and applied for target transmission/reception based on beam linkage state, then transmission efficiency is improved, but measurement precision and parameter determination complexity increase
Solution Approach 1:
The patent uses beam linkage state as an intermediary that connects reference transmission/reception with target transmission/reception. The beam linkage state contains mapping information that associates reference signals with target signals, serving as a mediator that enables UE to derive spatial parameters for target transmissions based on measured reference signals, thus simplifying parameter determination while maintaining precision.
Solution Approach 2:
The patent implements copying by having UE copy spatial parameters from reference transmission/reception to target transmission/reception based on beam linkage state mapping. Instead of independently determining spatial parameters for each target transmission, UE copies the spatial characteristics from the reference signal, reducing measurement complexity while maintaining transmission efficiency.
3Productivity
If beam linkage state information is transmitted from base station to UE, then uplink/downlink transmission optimization is improved, but loss of information and signaling overhead increase
Solution Approach 1:
The patent implements universality by designing beam linkage state information to serve multiple functions simultaneously. The same beam linkage state configuration is used for both downlink reception optimization and uplink transmission optimization, reducing the need for separate signaling for each direction and thereby reducing overall signaling overhead.
Solution Approach 2:
The patent merges reference transmission configuration and target transmission configuration into a unified beam linkage state structure. By combining the mapping relationship information between reference and target signals into a single configuration message, the patent reduces the total signaling overhead compared to separate configurations.
Data Source
AI summary
A method and an apparatus for uplink/downlink transmission and reception based on a beam linkage state in a wireless communication system are disclosed. A method for performing uplink transmission or downlink reception according to an embodiment of the present disclosure may comprise: receiving, from a base station (BS), information on a beam linkage state (BLS), wherein the BLS includes information on a mapping relation between reference transmission and reception and at least one target transmission and reception; receiving, from the BS, information on a first spatial parameter for the reference transmission and reception which is related to a specific BLS; and performing the uplink transmission or the downlink reception based on a second spatial parameter corresponding to the first spatial parameter.