Dynamic Uplink Control Region Allocation in Wireless Systems
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Solution Overview
Problem
In wireless communication systems like LTE, statically defining the control region leads to inefficient resource allocation, resulting in wasted resources due to variable needs for control information, and prohibits data transmission when an odd number of resource blocks are reserved for control information, causing overlap issues.
Innovation Solution
A method and apparatus that dynamically allocate uplink control resources based on the number of control symbols used in downlink transmissions, allowing for flexible reservation and reuse of unused control channel resources for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a static control region is defined in the wireless communication system, then the control information transmission is guaranteed, but resource waste occurs due to variable control information needs
Solution Approach 1:
The patent implements dynamic control region allocation where the size of the control region is adjusted based on actual control information requirements. The system determines the number of control symbols needed and dynamically configures the control region size accordingly, transitioning from a static to a dynamic resource allocation mechanism that adapts to varying traffic conditions.
Solution Approach 2:
The patent changes the parameter of control region size from a fixed static value to a dynamic value that varies based on the number of control symbols required. By adjusting this parameter according to actual needs, the system optimizes resource utilization while ensuring reliable control information transmission.
2Ease of operation
If an odd number of resource blocks are reserved for control information, then control region configuration is simplified, but data transmission is prohibited due to overlap issues
Solution Approach 1:
The patent segments the resource blocks into control region and data region, allowing independent allocation. When an odd number of resource blocks are reserved for control, the remaining blocks can still be allocated for data transmission without prohibition, resolving the overlap issue by clear segmentation and independent resource management.
Solution Approach 2:
The patent enables resource blocks to serve multiple functions - control information transmission and data transmission can coexist in the same time-frequency resources through proper allocation. The system allows resource blocks to be universally used for either control or data purposes based on actual needs, improving overall resource utilization.
3Reliability
If resource blocks are reserved for control channel, then control information transmission is ensured, but unused reserved resources cannot be utilized for data traffic
Solution Approach 1:
The patent implements a resource recovery mechanism where reserved control channel resources that are not fully utilized are recovered and made available for data transmission. The system identifies unused portions of reserved resources and reallocates them for data traffic, ensuring that no resources remain idle when not needed for control purposes.
Solution Approach 2:
The system enables self-service resource allocation where the wireless communication system automatically identifies and reallocates unused control resources to data transmission without external intervention. The resource management mechanism serves itself by dynamically adjusting allocations based on actual control information requirements.
Data Source
AI summary
Systems and methodologies are described that facilitate allocating uplink resources in a wireless access terminal. When a downlink transmission is received at a wireless device, the wireless device determines the appropriate control region to reserved based in part on the downlink transmission. Uplink data resources are also dynamically assigned.