Communications Device Uplink Encoding for Low-Latency URLLC Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communications networks face challenges in efficiently supporting a wide range of devices with diverse data traffic profiles, particularly in handling Ultra Reliable Low Latency Communications (URLLC) services, where conventional techniques lack effective methods for prioritizing and multiplexing uplink data from different logical channels and managing collisions between grant-based and grant-free resource allocations.
Innovation Solution
The method involves selecting encoding parameters different from those indicated by the network for uplink data transmission, allowing the communications device to form transport blocks and transmit an indication of these parameters, enabling flexible resource use and prioritization of data based on service requirements, such as URLLC, by using a predetermined subset of resources for MCS indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional grant-based scheduling is used for uplink data transmission, then network control and resource allocation are maintained, but transmission flexibility and latency for URLLC services deteriorate
Solution Approach 1:
The network pre-configures multiple uplink resources with different encoding parameters (MCS values) before URLLC data arrives. When URLLC data needs transmission, the device can immediately use the pre-configured resources without waiting for dynamic scheduling, thus reducing latency while maintaining network control through the pre-established resource allocation
Solution Approach 2:
The patent enables dynamic selection among multiple pre-configured encoding parameters based on current channel conditions and data requirements. The communications device can adaptively choose the most appropriate MCS value from the pre-configured set, providing transmission flexibility for URLLC services while maintaining systematic resource management
2Adaptability or versatility
If network-indicated encoding parameters are used for uplink transmission, then resource allocation efficiency is maintained, but adaptability to diverse service requirements deteriorates
Solution Approach 1:
The network pre-configures multiple encoding parameter sets corresponding to different service types (e.g., eMBB, URLLC). This preliminary configuration allows the device to quickly adapt to different service requirements by selecting from pre-defined parameter sets, reducing the complexity of real-time parameter optimization while maintaining service-specific adaptability
Solution Approach 2:
The patent allows the communications device to select and change encoding parameters (MCS values) from multiple pre-configured options based on the specific service requirements. This parameter selection capability enables the system to adapt to diverse traffic profiles (URLLC, eMBB, etc.) without requiring complex real-time parameter optimization, as the appropriate parameter ranges are pre-determined for each service type
3Productivity
If multiple devices share uplink resources, then resource utilization efficiency is improved, but collision probability increases
Solution Approach 1:
The patent assigns different encoding parameters (MCS values) and resource configurations to different devices or device groups sharing the uplink resources. This local differentiation in transmission characteristics reduces the probability of collisions and improves the reliability of simultaneous transmissions, while still maintaining high resource utilization through shared access to the uplink channel
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method of transmitting uplink data by a communications device in a wireless communications network, the method comprising receiving an indication of first communications resources allocated for a transmission of data by the communications device and associated with encoding parameters, determining that first uplink data is available for transmission, selecting the first communications resources for the transmission of the first uplink data, selecting encoding parameters different from the encoding parameters associated with the first communications resources, forming a transport block comprising the first uplink data in accordance with the selected encoding parameters, and transmitting, using the first communications resources, the transport block and an indication of the selected encoding parameters.