Dynamic Transmission Direction Configuration in 5G Networks
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Solution Overview
Problem
Current mobile communications technologies face challenges in dynamically configuring resource transmission directions due to limited configuration modes, which fail to adapt to fluctuating service requirements in evolving networks with smaller cell radii and varying terminal connections.
Innovation Solution
A method that allows flexible configuration of uplink and downlink transmission directions by dividing resource elements into smaller or larger units based on various granularities, such as time and frequency domains, enabling more flexible and dynamic resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static or semi-static configuration mode is used for transmission directions, then system complexity is reduced and ease of operation is improved, but adaptability to dynamic service changes deteriorates
Solution Approach 1:
The patent introduces dynamic transmission direction configuration that allows the base station to adjust uplink and downlink transmission directions in real-time based on current service requirements, terminal capabilities, and channel conditions. This transforms the static configuration system into a dynamic one, enabling adaptation to fluctuating service demands while maintaining operational simplicity through automated control.
Solution Approach 2:
The system enables flexible adjustment of transmission direction parameters by dividing time resources into different granularities (subframes, slots, mini-slots) and dynamically configuring which resources are allocated to uplink or downlink. This parameter flexibility allows the system to adapt to various service scenarios without increasing operational complexity for users.
2Device complexity
If resource division is performed at subframe granularity, then device complexity is reduced and ease of operation is improved, but manufacturing precision of resource allocation deteriorates
Solution Approach 1:
The patent segments time resources into multiple hierarchical granularities: radio frames divided into subframes, subframes divided into slots, and slots further divided into mini-slots. This multi-level segmentation allows the system to maintain simple device operation at higher levels while achieving precise resource allocation at lower levels, resolving the contradiction between complexity and precision.
Solution Approach 2:
The patent introduces an additional dimension of resource division by enabling flexible granularity selection (from subframe to slot to mini-slot level). This dimensional flexibility allows the system to adjust the precision of resource allocation according to service requirements without proportionally increasing device complexity, as the same segmentation framework supports multiple granularities.
3Ease of manufacture
If fewer configuration modes are provided, then device complexity is reduced and ease of manufacture is improved, but adaptability to different service requirements deteriorates
Solution Approach 1:
The patent creates a universal configuration framework that can accommodate multiple service types and scenarios through flexible parameter combination. The same basic segmentation structure (frames-subframes-slots-mini-slots) serves multiple functions by allowing different granularity levels and direction configurations to be applied based on service requirements, eliminating the need for separate dedicated configurations for each service type.
Solution Approach 2:
The system employs dynamic configuration modes where transmission directions can be flexibly adjusted based on real-time service demands. This dynamic approach provides adaptability to various service scenarios without requiring a large number of pre-defined static configuration modes, simplifying the system while maintaining versatility.
4Productivity
If transmission direction configuration is updated frequently, then adaptability to service changes is improved and productivity is enhanced, but loss of time for configuration signaling increases
Solution Approach 1:
The patent implements periodic transmission direction configuration updates at different granularity levels. By configuring directions at slot or mini-slot levels within a radio frame structure, the system achieves frequent updates for high productivity while utilizing the periodic nature of wireless framing to minimize signaling overhead. The configuration is updated only when service requirements change, rather than continuously.
Solution Approach 2:
The system performs preliminary configuration of transmission directions at appropriate granularity levels before data transmission begins. By pre-configuring the direction for each slot or mini-slot within a frame, the system minimizes real-time signaling time loss while maintaining the ability to adapt to service changes. The configuration is prepared in advance based on predicted or current service demands.
Data Source
AI summary
Embodiments of this application provide a transmission direction configuration method, a device, and a system, and relate to the field of communications technologies. A specific solution is as follows: a terminal device receives first indication information from a network device, the first indication information is used to indicate a configuration of uplink and downlink transmission directions, the configuration is used to describe types, a number, and distribution of resource elements comprised in one period, the resource granularity comprises a time domain granularity, the time domain granularity comprises (OFDM) symbol, the types of the resource elements comprise at least one of an uplink resource element, a downlink resource element, or a switch resource element between the downlink resource element and the uplink resource element; and performs information transmission indicated by the first indication information, of the uplink and/or downlink transmission directions.