Shared Channel Scheduling With Single DCI and Repeated Transmission
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Solution Overview
Problem
Current communications systems require multiple pieces of downlink control information (DCI) to indicate transmission information for multiple physical uplink or downlink shared channels, increasing transmission burden between network-side devices and terminals.
Innovation Solution
Implementing a method where shared channels are repeatedly transmitted N times, where N is an integer greater than 1, using a single piece of DCI to schedule multiple shared channels, reducing the need for multiple DCI transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple pieces of DCI are used to indicate transmission information for multiple shared channels, then transmission information can be accurately indicated, but transmission burden between network-side device and terminal increases
Solution Approach 1:
The patent combines multiple DCI transmissions into a single DCI by introducing a resource index table that lists multiple shared channel resources. Instead of sending separate DCI for each shared channel, the network-side device sends one DCI containing an index that points to the resource index table, thereby indicating multiple shared channels simultaneously. This merging reduces the number of DCI transmissions while maintaining complete transmission information indication.
Solution Approach 2:
The patent creates a universal resource index table that can serve multiple DCI transmissions. The resource index table contains resource row indices that can be referenced by any DCI, allowing a single DCI to indicate multiple shared channels across different time slots and frequencies. This multi-functional approach enables one DCI to perform the work of multiple DCI transmissions.
2Adaptability or versatility
If multiple pieces of DCI are transmitted to schedule multiple shared channels, then each shared channel can be individually controlled, but transmission efficiency decreases
Solution Approach 1:
The patent performs preliminary action by pre-configuring a resource index table that contains resource row indices for multiple shared channels. This table is established beforehand and can be referenced by DCI transmissions. By preparing the resource index table in advance, the system enables efficient DCI-based scheduling without needing to transmit detailed resource allocation information repeatedly, thus improving transmission efficiency while maintaining control flexibility.
Solution Approach 2:
The patent introduces a resource index table as an intermediary between the DCI and the actual shared channel resources. The resource index table acts as a mediator that translates the compact DCI index into detailed resource allocation information. This intermediary structure allows DCI to efficiently indicate multiple shared channels without losing the ability to individually control each channel's transmission parameters.
3Device complexity
If one shared channel is transmitted per slot, then resource allocation is simple, but multiple shared channels require multiple slots and multiple DCI
Solution Approach 1:
The patent adds another dimension to resource allocation by introducing the resource index table as a separate lookup structure. Instead of allocating resources directly through multiple DCI in the time domain, the system uses the resource index table to organize resource information in a separate dimension that can be efficiently accessed by a single DCI. This dimensional change allows multiple shared channels to be indicated without proportionally increasing DCI transmissions.
Data Source
AI summary
A resource transmission method, a resource transmission apparatus, and a communications device. When the resource transmission method is applied to a network-side device, the method includes: sending downlink control information DCI, the DCI being used to indicate that a terminal is to perform transmission of at least one shared channel; where in a case that the shared channels are at least two in quantity, each of the at least two shared channels is repeatedly transmitted N times, N being an integer greater than 1.