Uplink Grant Scheduling via PUCCH Resource Indication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Uplink data transmission in LTE systems is inefficient due to mismatches in the size of uplink resources and the data being transmitted, leading to suboptimal utilization of resources, particularly for machine-type communications and background applications with varying data sizes and transmission patterns.
Innovation Solution
A method that schedules uplink grants based on the size of data to be transmitted, involving buffering of data before requesting uplink resources and using control channels to indicate the required resource size, ensuring that allocated uplink resource blocks are efficiently utilized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uplink resources are allocated based on fixed scheduling requests, then resource allocation is simple, but resource utilization efficiency deteriorates due to size mismatch between allocated resources and actual data
Solution Approach 1:
The patent implements dynamic uplink resource allocation by allowing user equipment to indicate different data sizes through multiple PUCCH resources, enabling the base station to allocate uplink resources that dynamically match the actual data size rather than using fixed allocation schemes
Solution Approach 2:
The patent changes the parameter indication method by using different PUCCH resources to represent different data size parameters, allowing the resource allocation system to adapt to varying data sizes without increasing complexity
2Reliability
If uplink grants are frequently requested to ensure data transmission, then data transmission reliability is improved, but resource overhead increases due to frequent scheduling requests
Solution Approach 1:
The patent enables preliminary indication of data size through PUCCH resource selection before uplink grant allocation, allowing the base station to pre-calculate and allocate appropriate uplink resources in advance, thereby reducing the need for frequent scheduling requests
Solution Approach 2:
The patent implements a feedback mechanism where user equipment selects PUCCH resources based on data size and transmits them to the base station, which then uses this feedback information to allocate appropriate uplink resources, reducing unnecessary scheduling requests
Data Source
AI summary
A method, apparatus and computer program product are provided to schedule the uplink grant in a manner that efficiently utilizes uplink resources. In the context of a method from the perspective of the user equipment, an indication regarding data to be transmitted is received and a scheduling request is caused to be provided via a control channel. The scheduling request is configured to indicate a size of the data to be transmitted. In response to a grant, data may be caused to be transmitted via allocated uplink resource blocks. In the context of a method from the perspective of a base station, a scheduling request including an indication of the requested size of the uplink grant is received via a control channel. The method may cause the grant to be provided to a user equipment and, in response, may receive data from the user equipment via allocated uplink resource blocks.