Relay UE Joint Grant for Downlink Pipeline
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in maintaining reliable and high-data-rate connections, especially when downlink data transmission is impaired due to environmental factors like signal interference or blockages, particularly in high-frequency ranges like Frequency Range 2 (FR2), where additional communication links are needed for diversity and aggregation.
Innovation Solution
A method where a base station generates and transmits a joint grant to a relay user equipment (UE), allocating resources for a first communication link between the base station and the relay UE, and a second communication link between the relay UE and the target UE, forming a pipeline for transmitting downlink data, allowing for simultaneous or redundant data delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single communication link is used for downlink data transmission, then the system complexity is low, but the transmission reliability deteriorates due to environmental interference and signal blockages
Solution Approach 1:
The patent segments the downlink data transmission into multiple independent communication links: a first link from the base station to the relay UE, and a second link from the relay UE to the target UE. This segmentation allows data to be transmitted through multiple paths, improving reliability by providing alternatives if one link fails, while keeping each individual link relatively simple in structure.
Solution Approach 2:
The patent introduces a relay UE as an intermediary node between the base station and the target UE. This intermediary enables data transmission through a pipeline structure where the relay UE receives data on the first link and forwards it on the second link, thereby enhancing transmission reliability without requiring direct complex multi-link configuration between the base station and all target UEs.
2Productivity
If multiple communication links are established for diversity and aggregation, then the data transmission rate is improved, but the resource management complexity increases
Solution Approach 1:
The patent merges the resource management functions for multiple communication links into a unified joint grant mechanism. The base station generates a single joint grant that contains resource assignments for both the first link (base station to relay UE) and the second link (relay UE to target UE), allowing coordinated resource allocation across multiple links while simplifying the management overhead compared to independent grant management for each link.
Solution Approach 2:
The joint grant structure serves multiple functions simultaneously: it allocates resources for downlink data transmission on the first link, allocates resources for relayed data transmission on the second link, and provides coordinated scheduling for the relay UE. This multi-functionality improves data transmission rate through multiple links while avoiding the complexity of separate resource management procedures.
3Loss of time
If separate grants are used for each communication link, then the resource allocation flexibility is high, but the signaling overhead and processing time increase
Solution Approach 1:
The patent combines multiple separate grant messages into a single joint grant that contains resource assignments for both the first communication link (base station to relay UE) and the second communication link (relay UE to target UE). This merging reduces signaling overhead and processing time by transmitting all necessary resource allocation information in one message, while still maintaining the flexibility of link-specific resource assignment through the structured format of the joint grant.
Data Source
AI summary
A data pipeline between a base station and a user equipment (UE) may be formed via a relay UE. In this regard, a base station is configured to send a joint grant to the first UE, the joint grant including a first resource assignment for transmission of data via a first communication link between the base station and the first UE, and a second resource assignment for transmission of data via a second communication link between the first UE and a second UE. The first and second communications link may form a downlink pipeline for transmitting data from the base station to the UE. The first and second communications link may be used to transmit uplink data in parallel from the first UE to the base station.