Resource Identifier for Wireless Control Information
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Solution Overview
Problem
In wireless communications systems, the existing methods for transmitting downlink control information (DCI) and resource allocation information are inefficient, as they occupy a large quantity of time-frequency resources due to the use of excessively long resource allocation information, which limits the availability of resources for data transfer.
Innovation Solution
The proposed solution involves using a resource identifier in the control information to indicate allocated frequency domain resources, reducing the number of bits required to convey resource allocation information, thereby minimizing the time-frequency resources needed for this purpose and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If detailed resource allocation information is transmitted in DCI, then resource allocation precision is improved, but the length of control information increases and occupies more time-frequency resources
Solution Approach 1:
The resource allocation information is segmented into two parts: a first indication information (compact form) carried in DCI that points to a subset of resources, and second indication information (detailed form) carried in downlink data that provides complete resource details. This segmentation allows DCI to remain concise while still enabling precise resource allocation through the combination of both indication layers.
Solution Approach 2:
The first indication information in DCI acts as an intermediary that indirectly refers to the detailed resource allocation information in downlink data. Instead of directly transmitting complete resource allocation details in DCI, the system uses this intermediary reference mechanism where the DCI points to the actual resource configuration, reducing DCI length while maintaining allocation precision.
2Manufacturing precision
If complete resource allocation information is transmitted in DCI, then resource allocation accuracy is improved, but time-frequency resource utilization deteriorates
Solution Approach 1:
By segmenting resource allocation information into compact first indication information in DCI and detailed second indication information in downlink data, the system achieves accurate resource allocation without consuming excessive DCI resources, thereby improving overall time-frequency resource utilization.
Solution Approach 2:
The system transitions from a single-dimension approach (transmitting all resource allocation info in DCI) to a two-dimension approach by adding downlink data as another dimension for carrying detailed resource information. This dimensional expansion allows DCI to remain concise while still achieving complete resource allocation accuracy through the combined information from both dimensions.
3Length of stationary object
If resource allocation information length is reduced, then time-frequency resource occupation is reduced, but resource allocation flexibility deteriorates
Solution Approach 1:
The first indication information serves as an intermediary that maintains flexibility by allowing the system to point to different resource configurations in downlink data without changing the DCI structure. This intermediary mechanism preserves resource allocation flexibility while keeping control information length reduced.
Solution Approach 2:
The system implements dynamic resource allocation where the actual resource configuration can vary based on downlink data content, while the DCI structure remains static and concise. The first indication information dynamically references different resource patterns in downlink data, achieving flexibility without increasing control information length.
Data Source
AI summary
The present disclosure relates to communication methods and communications devices. In one example communication method, control information is sent to a terminal device. The control information includes a resource identifier. The resource identifier indicates that allocated frequency domain resources are all frequency domain resources that can be supported by the terminal device on one carrier or that some of all frequency domain resources that can be supported by the terminal device on one carrier.