Wireless Communication Resource Allocation via Valid Time Indication
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Solution Overview
Problem
In wireless communication systems, the interference between Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH) due to shared resource usage degrades system performance, as existing solutions fail to accurately determine the valid time for first indication information in slot aggregation scenarios.
Innovation Solution
The introduction of specific transmission time units where the first indication information is valid, allowing the terminal to determine the use of downlink control region resources for transport block transmission, thereby reducing interference between transport blocks and downlink control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the part of PDCCH resource that may be used to transmit the PDSCH is still used to transmit a PDCCH in an existing solution, then resource utilization is improved, but mutual interference between PDCCH and PDSCH occurs and system performance is degraded
Solution Approach 1:
The PDCCH resource is segmented into two distinct parts: one part used for PDCCH transmission and another part used for PDSCH transmission. This segmentation is achieved by introducing a time domain parameter (valid time of first indication information) that divides the resource in the time dimension, allowing simultaneous use of the same frequency-time resource for different purposes without interference.
Solution Approach 2:
The patent introduces dynamic time-domain parameters (valid time of first indication information, number of transmission time units) that allow flexible configuration of resource allocation. This dynamic approach enables the system to adaptively adjust the duration and timing of PDCCH and PDSCH transmissions based on actual communication needs, optimizing both resource utilization and avoiding interference.
2Productivity
If physical layer signaling is used to indicate that a part of PDCCH resource may be used to transmit PDSCH, then downlink resource utilization is improved, but the valid time for this indication is not determined leading to resource conflict
Solution Approach 1:
The patent introduces preliminary time domain parameters (valid time of first indication information) that are determined in advance before actual resource allocation. This preliminary action establishes clear temporal boundaries for PDCCH and PDSCH usage, eliminating ambiguity in resource allocation while maintaining high resource utilization through physical layer signaling.
Data Source
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AI summary
This application provides a wireless communication method, apparatus, and system. The method includes: receiving higher layer signaling from a base station, to indicate a downlink aggregation coefficient S, where the downlink aggregation coefficient S corresponds to S consecutive transmission time units, and each transmission time unit is used to repeatedly transmit a transport block of a terminal; receiving physical layer signaling from a base station, where the physical layer signaling is used to schedule the transport block of the terminal and includes first indication information, and the first indication information is used to indicate that a part of resource of a downlink control region can be used to transmit the transport block of the terminal; and determining a valid time of the first indication information, where the valid time is one or more transmission time units in the S consecutive transmission time units. According to the wireless communication method, apparatus, and system provided in this application, a purpose of the part of resource in the downlink control region can be determined by introducing the valid time of first indication information, so that a probability of mutual interference between a transport block and downlink control information in the prior art is reduced, thereby improving performance of a communications system.