Dynamic Uplink Region Determination for Flexible Resource Allocation
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Solution Overview
Problem
The existing LTE TDD system has a fixed uplink and downlink resource allocation, which is not flexible enough to support varying traffic demands for different types of services, such as URLLC, eMBB, and mMTC in 5G systems, limiting its ability to adapt to diverse service requirements.
Innovation Solution
A method and device that allow terminals to receive indication information from network devices to determine dynamic uplink regions within time units for transmitting uplink shared channels, enabling flexible resource allocation by encoding, rate-matching, and mapping data according to preset or varying time-domain sizes, and adjusting transmission based on received indication information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed TDD frame structure is used, then system complexity is reduced and ease of operation is improved, but adaptability to different service types and traffic demands deteriorates
Solution Approach 1:
The patent applies dynamics by enabling dynamic switching between different TDD frame structures (first and second frame structures) based on service requirements. The system can adaptively adjust the uplink-downlink configuration to match varying traffic demands of different service types (eMBB, URLLC, mMTC), transforming the static fixed frame structure into a dynamic configurable one that optimizes performance for each service scenario
Solution Approach 2:
The patent implements parameter changes by modifying key TDD frame parameters such as subframe allocation, slot configuration, and cyclic prefix length according to different service types. By changing these parameters dynamically, the system can optimize resource allocation for each service type while maintaining a unified frame structure framework, thus improving adaptability without proportionally increasing system complexity
2Adaptability or versatility
If dynamic resource allocation is implemented, then adaptability to varying traffic demands is improved, but device complexity and information processing requirements increase
Solution Approach 1:
The patent applies segmentation by dividing the dynamic resource allocation process into distinct stages: frame structure selection, resource block allocation, and modulation scheme determination. Each stage handles specific aspects of resource allocation independently, allowing the system to manage complexity through modular processing while achieving comprehensive adaptability to different service types and traffic conditions
Solution Approach 2:
The patent implements preliminary action by pre-defining multiple TDD frame structures with different uplink-downlink configurations before actual data transmission. These pre-configured frame structures are prepared in advance and can be quickly selected and activated based on real-time service requirements, reducing the computational complexity of dynamic allocation during active transmission
Data Source
AI summary
Disclosed in the embodiments of the present invention are an information transmission method and apparatus, the method comprising: a terminal receives indication information sent by a network device, the indication information being used for the terminal to determine an uplink area in a time unit in which an uplink shared channel is transmitted; the terminal sends the uplink shared channel in the uplink area; hence, the terminal receives the indication information sent by the network device and determines transmission resources for the uplink shared channel on the basis of the indication information, thus ensuring correct transmission of the uplink shared channel.