Dynamic Resource Allocation in Wireless Control and Data Channels
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Solution Overview
Problem
Wireless networks face challenges in efficiently allocating resources between control and data channels, particularly in scenarios like VoLTE and MU-MIMO modes, where additional control resources are needed without overburdening data resources.
Innovation Solution
Implementing SU-MIMO, MU-MIMO, and enhanced control modes by dynamically allocating physical resource blocks within subframes, allowing for periodic adjustments to balance resource usage between control and data channels, and allocating a portion of data channel resources for control information when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If more control resources are allocated in control channels to support VoLTE and MU-MIMO modes, then control signaling capability is improved, but data channel resources are reduced
Solution Approach 1:
The patent merges control channel and data channel resources by allowing control information to be transmitted using data channel resources. Specifically, when control channel resources are insufficient, the system dynamically allocates data channel resource blocks to carry control information, effectively combining the functional capabilities of both channels to resolve the resource conflict.
Solution Approach 2:
The system implements dynamic resource allocation where the boundary between control channel and data channel resources is not fixed but can be adjusted in real-time. The network can dynamically reconfigure resource blocks between control and data functions based on instantaneous traffic demands, enabling flexible adaptation to varying control signaling requirements without permanently sacrificing data capacity.
2Productivity
If enhanced control mode (E-PDCCH) is used to minimize control channel resource consumption, then control channel efficiency is improved, but data channel resources are increased
Solution Approach 1:
The system employs feedback mechanisms to monitor control channel resource usage and dynamically adjust resource allocation. When enhanced control mode is activated and control channel efficiency improves, the system detects the available surplus resources and reallocates them to data channel transmissions, thereby converting control efficiency gains into additional data capacity.
3Productivity
If MU-MIMO mode is implemented to increase network capacity, then overall resource utilization is improved, but control and signaling resources are consumed
Solution Approach 1:
The patent segments the resource allocation process into distinct phases: initial control signaling for MU-MIMO setup, followed by data transmission phases. By separating control and data resource allocation in time and frequency domains, the system can efficiently manage control resources for MU-MIMO coordination while maximizing data channel utilization during actual data transmissions, preventing control resources from being continuously consumed.
Data Source
AI summary
Allocating resources in a wireless network includes monitoring usage of each of a control channel and a data channel, determining that at least the usage of the data channel exceeds a capacity of the data channel, determining a usage of each of the control channel and the data channel operating in MU-MIMO mode, determining that the usage of the control channel in the MU-MIMO mode exceeds a first capacity of the control channel, determining a usage of each of the control channel and the data channel operating in both the MU-MIMO mode and an enhanced control mode, and adjusting a size of the portion of resources of the data channel allocated for control information upon determining that the second usage of one of the control channel or the data channel exceeds a second capacity of one of the control channel or the data channel.