Uplink Transport Block Size Determination Over Unlicensed Spectrum
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LTE technologies face challenges in uplink resource allocation and transport block size determination when operating over unlicensed spectrum, as standardized techniques for licensed spectrum do not effectively meet regulatory requirements for occupied channel bandwidth, leading to inefficient data transmission.
Innovation Solution
The method involves determining a transport block size based on the number of resource blocks, receiving indicated coefficients via downlink control information, and calculating a transport block size column index using these coefficients, which allows for efficient uplink resource allocation and data transmission that meets the 80% occupancy requirement for unlicensed spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If standardized LTE techniques for licensed spectrum are used for uplink resource allocation over unlicensed spectrum, then device complexity is reduced, but the occupied channel bandwidth requirement of 80% cannot be met
Solution Approach 1:
The patent modifies the transport block size determination by introducing a scaling factor applied to the number of resource blocks. This parameter change allows the system to meet the 80% occupied channel bandwidth requirement while maintaining compatibility with existing LTE resource allocation procedures, thus resolving the contradiction between device complexity and regulatory compliance.
Solution Approach 2:
The patent introduces dynamic adjustment of transport block size based on the scaling factor, which is determined by the number of resource blocks allocated. This dynamic approach enables the system to adaptively meet the 80% occupancy requirement across different resource allocation scenarios while using standardized LTE techniques, balancing complexity and compliance.
2Reliability
If the number of resource blocks is increased to meet the 80% occupied channel bandwidth requirement, then regulatory compliance is achieved, but the transport block size becomes excessively large
Solution Approach 1:
The patent introduces a scaling factor parameter that is applied to the number of resource blocks when determining transport block size. This parameter change allows the system to account for the 80% occupancy requirement without directly translating all allocated resource blocks into transport block size, thus preventing excessively large transport blocks while maintaining compliance.
3Device complexity
If traditional uplink resource allocation is used, then device complexity is minimized, but data transmission efficiency over unlicensed spectrum is reduced
Solution Approach 1:
The patent modifies the transport block size determination by applying a scaling factor to the resource block count. This parameter change improves data transmission efficiency by optimizing the transport block size to match actual data needs while maintaining the simplicity of standardized LTE resource allocation mechanisms, thus resolving the contradiction between complexity and productivity.
Data Source
AI summary
Methods and apparatus for determining a transport block size include identifying data to be transmitted on an uplink, wherein the data is associated with a number of resource blocks. The methods and apparatus further include receiving at least one indicated coefficient via a downlink control information. Additionally, the methods and apparatus include determining at least one coefficient based on the at least one indicated coefficient and calculating a transport block size column index based on the number of resource blocks and the at least one coefficient. Moreover, the methods and apparatus include determining the transport block size based at least in part on the transport block size column index. The methods and apparatus may transmit the data on the uplink based at least in part on the transport block size.