Multi-TRP Small Data Transmission with Qualified Beam Configurations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing small data transmissions (SDTs) between user equipment (UE) and multiple transmission reception points (TRPs), particularly in optimizing beam configurations for improved communication efficiency.
Innovation Solution
The implementation of multi-TRP small data transmissions (SDTs) through the exchange of configuration messages and request messages between UE and network nodes, allowing for the use of multiple qualified beams to enhance communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single-TRP small data transmission is used, then device complexity is reduced, but communication reliability and transmission efficiency deteriorate
Solution Approach 1:
The patent segments the transmission function by introducing multiple independent TRPs (Transmission Reception Points) that can independently transmit and receive data. Each TRP operates with its own beam configuration, allowing the system to divide the communication task across multiple spatial paths, thereby improving reliability without requiring each individual TRP to be overly complex.
Solution Approach 2:
The patent adds a spatial dimension to small data transmission by utilizing multiple TRPs located at different spatial positions. This multi-dimensional approach allows data to be transmitted through multiple spatial paths simultaneously, improving communication reliability by providing spatial diversity and redundancy.
2Reliability
If multiple qualified beams are used for multi-TRP SDT, then data transmission reliability is improved, but beam configuration complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple beam pairs (downlink beams from TRP to UE and uplink beams from UE to TRP) before actual data transmission. The network node provides beam configuration information to the UE in advance, including multiple candidate beams for both downlink and uplink directions, so that when multi-TRP SDT is initiated, the UE can immediately use the pre-established beam configurations without real-time complexity.
Solution Approach 2:
The network node acts as an intermediary that manages the complexity of beam configurations. It provides beam configuration information to the UE, including multiple qualified beams for both downlink and uplink directions, and coordinates the selection and usage of these beams during multi-TRP SDT operations, thereby shielding the UE from the full complexity of managing multiple beams.
3Productivity
If traditional single-TRP configuration is used, then signaling overhead is reduced, but transmission latency increases
Solution Approach 1:
The patent merges the configuration of multiple beams into a single unified beam configuration message transmitted by the network node. Instead of separately configuring each beam individually (which would increase signaling overhead), the network node provides a consolidated beam configuration information that includes multiple qualified beams for both downlink and uplink directions, reducing signaling overhead while enabling multi-TRP operation.
Solution Approach 2:
The beam configuration information provided by the network node serves multiple functions simultaneously: it configures downlink beams for multiple TRPs, configures uplink beams for corresponding TRPs, and enables the UE to perform both downlink and uplink small data transmissions. This multi-functional configuration reduces the need for separate signaling for each function.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, a configuration that indicates a plurality of beams. The UE may transmit, to the network node, a multiple transmission reception point (TRP) (multi-TRP) request message, wherein the multi-TRP request message indicates multiple qualified beams from the plurality of beams. The UE may perform, with the network node, a multi-TRP small data transmission (SDT) based at least in part on the multiple qualified beams indicated by the multi-TRP request message. Numerous other aspects are described.