Uplink Transmission Control via Frequency Hopping Configuration
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Solution Overview
Problem
In mobile communication networks, uplink transmission collisions occur when the transmission point differs from the reception point, leading to signal interference and inefficiencies, particularly in scenarios where multiple cells are involved.
Innovation Solution
A method and apparatus for controlling uplink transmission by generating and applying frequency hopping configuration information to Physical Uplink Shared Channel (PUSCH) signals, allowing user equipment to transmit signals to a reception point different from the transmission point, thereby avoiding collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted by multiple cells or multiple transmission/reception points, then transmission capacity is improved, but signal collision occurs leading to interference and inefficiency
Solution Approach 1:
The patent segments the uplink transmission resources by introducing frequency hopping patterns that are specific to each transmission point-reception point pair. User equipment is configured with different frequency hopping parameters (starting ARFCN, offset values, hopping directions) depending on which transmission point sends downlink configuration and which reception point receives uplink signals. This segmentation prevents signal collision by ensuring that transmissions to different reception points occur on different frequency resources.
Solution Approach 2:
The patent applies local quality by customizing frequency hopping parameters for specific transmission point-reception point pairs. Each configuration includes point-specific parameters such as startingARFCN, hoppingOffset, and hoppingDirection that are tailored to the local characteristics of that particular transmission-reception relationship. This allows optimal resource allocation for each local scenario while preventing interference between different pairs.
2Reliability
If frequency hopping configuration is customized for different transmission point-reception point pairs, then signal collision is avoided, but system complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring frequency hopping parameters through downlink control information sent from transmission points to user equipment. The configuration is established before uplink transmission begins, including parameters like startingARFCN, hoppingOffset, and hoppingDirection. This advance configuration allows the system to manage complexity centrally at the transmission point while user equipment simply follows the pre-defined hopping pattern without needing to make real-time decisions.
Solution Approach 2:
The patent incorporates feedback mechanisms where user equipment reports received configuration information and transmission status back to the network. This feedback loop allows the system to adjust and optimize frequency hopping configurations dynamically while maintaining centralized control. The feedback ensures that the complexity of managing multiple frequency hopping patterns is handled by the network infrastructure rather than distributed across all user equipment.
Data Source
AI summary
The present disclosure relates to a method for controlling uplink transmission and an apparatus therefor. The method for enabling a transmission point to control the uplink transmission in a mobile communication network, according to one embodiment of the present disclosure, includes the steps of: generating first configuration information for indicating a frequency hopping to be applied to the uplink transmission of a terminal; and transmitting, to the terminal, a first signal having the first configuration information, wherein a reception point is different from the transmission point, and the reception point receives a second signal to which the first configuration information is applied from the terminal.