Unified Control Channel Structure for Wireless Resource Scheduling
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Solution Overview
Problem
In wireless communication systems, particularly in LTE and 5G networks, the complexity of blind detection for terminal devices increases due to different resource scheduling manners, leading to additional control signaling overhead and complexity in indicating data channel resources.
Innovation Solution
A method where a terminal device receives a control channel with a first and second bit field, determining the data channel resource implicitly indicated by the network device, allowing the terminal device to transmit data on specific time domain symbols regardless of the scheduling manner, using a unified channel structure for resource indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the network device uses different scheduling manners (slot-based and non-slot-based) to schedule data channel resources, then the system supports more flexible resource scheduling, but the complexity of blind detection for terminal devices increases and additional control signaling overhead is generated
Solution Approach 1:
The control channel structure is designed to be universal, supporting both slot-based and non-slot-based scheduling manners through a unified format. The resource indication information uses a consistent bit field structure that can indicate different scheduling types, allowing the same control channel to perform multiple scheduling functions without requiring separate blind detection processes for each scheduling manner
Solution Approach 2:
The invention changes the parameter representation in resource indication information to encode both the scheduling manner and resource location. By using specific bit field values to indicate different scheduling types (slot-based vs. non-slot-based) and their corresponding resource positions, the system transitions from requiring separate detection mechanisms to using a single parameter-based indication approach that reduces blind detection complexity
2Measurement precision
If the network device indicates both the scheduling manner and specific data channel resource to the terminal device, then the resource allocation is precise, but the control signaling overhead increases
Solution Approach 1:
The invention merges the indication of scheduling manner and resource location into a single resource indication information structure. The bit fields are designed to simultaneously encode both the scheduling type (slot-based or non-slot-based) and the specific resource position, combining multiple pieces of information that would traditionally require separate signaling into one compact indication message
Solution Approach 2:
The resource indication information is segmented into specific bit fields with defined functions. The first bit field indicates the time domain unit for data channel transmission, while the second bit field indicates the specific resource position within that unit. This segmentation allows precise resource indication while maintaining a compact structure that minimizes overall signaling overhead
Data Source
AI summary
The present application discloses a method for transmitting data, a terminal device and a network device, the method includes: receiving, by the terminal device, a control channel carrying resource indication information on a first time domain unit; if the value on the second bit field belongs to a first value set, determining, by the terminal device, that the at least one time domain symbol refers to all time domain symbols in a first symbol set; if the value on the second bit field belongs to a second value set, determining, by the terminal device, that the at least one time domain symbol refers to a time domain symbol in a second symbol set corresponding to the value on the second bit field; and transmitting, by the terminal device, the data channel on the at least one time domain symbol.