Group Scheduling Control Information on PDSCH for Dense Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting group scheduling control information, particularly in dense connected device environments where the capacity of the Physical Downlink Control Channel (PDCCH) is insufficient to meet high user densities.
Innovation Solution
The proposed solution involves transmitting group scheduling control information on a Physical Downlink Shared Channel (PDSCH) instead of solely on a PDCCH, allowing for flexible resource allocation in time and frequency, thereby increasing efficiency and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If group scheduling control information is transmitted over PDCCH, then control information delivery is reliable, but control channel capacity is insufficient in dense networks
Solution Approach 1:
The patent moves group scheduling control information transmission from the control channel dimension (PDCCH) to the data channel dimension (PDSCH). This dimensional transition allows the system to utilize the larger resource pool of the shared channel while maintaining reliable delivery through appropriate signaling mechanisms and resource allocation.
Solution Approach 2:
The PDSCH, traditionally used for data transmission, is made multi-functional by enabling it to carry both user data and group scheduling control information. This universal utilization of the shared channel increases overall system capacity while reducing the burden on dedicated control channels.
2Productivity
If group scheduling control information is transmitted over PDSCH, then control channel capacity increases, but resource allocation flexibility decreases
Solution Approach 1:
The patent segments the transmission resources by allocating specific PDSCH resources for group scheduling control information separately from general data transmission resources. This segmentation enables independent optimization and flexible allocation of control and data channels while maintaining the capacity benefits of using PDSCH.
Solution Approach 2:
The system dynamically allocates PDSCH resources for group scheduling control information based on network conditions, user density, and traffic requirements. This dynamic resource allocation maintains flexibility while utilizing the enhanced capacity of the shared channel.
3Productivity
If PDSCH is used for control information transmission, then spectral efficiency improves, but system complexity increases
Solution Approach 1:
The patent introduces intermediate signaling mechanisms and protocol layers that mediate between the PDSCH transmission and the control information delivery. These intermediaries manage the complexity of using PDSCH for control purposes while maintaining spectral efficiency, by handling resource allocation, signaling, and coordination functions.
Data Source
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AI summary
Methods, systems, and devices for wireless communication are described. A wireless device may obtain group control information in a group common physical downlink shared channel (PDSCH), determine resources for communicating on a shared channel based on the group control information, and communicate on the resources of the shared channel. A base station may configure a user equipment (UE) group comprising at least one UE, transmit, in a group common physical downlink shared channel (PDSCH), group control information for scheduling the at least one UE for communicating on a shared channel, and communicate on the shared channel with the at least one UE.