Dual-PDSCH Reception for Overlapping Unicast and Multicast Data
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Solution Overview
Problem
Existing communication systems face inefficiencies in data transmission when a terminal device needs to simultaneously receive unicast and multicast services, as there is no effective solution for handling overlapping PDSCHs in the time domain.
Innovation Solution
The method allows a terminal device to simultaneously receive first data on a first PDSCH and second data on a second PDSCH under specific conditions, such as quasi-co-location of DMRS and sufficient processing time, enabling efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal device receives unicast and multicast services simultaneously using overlapping PDSCHs in the time domain, then data transmission efficiency is improved, but system complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the reception process by introducing separate reception indication information for unicast and multicast PDSCHs. The terminal device independently determines reception requirements for each service type, allowing simultaneous reception without conflating control signals. This segmentation resolves the contradiction by enabling parallel processing of unicast and multicast data streams while maintaining manageable system complexity through structured indication mechanisms.
Solution Approach 2:
The patent adds a new dimension to resource allocation by introducing reception indication information that operates independently from traditional uplink grant resources. This dimensional separation allows the system to manage unicast and multicast receptions in different control planes, enabling simultaneous time-domain PDSCH reception without overwhelming the existing resource management framework, thus improving efficiency while controlling complexity.
2Reliability
If the terminal device allocates processing resources for multiple overlapping PDSCHs, then data reception capability is improved, but power consumption increases
Solution Approach 1:
The patent implements partial action by enabling the terminal device to selectively process only those PDSCHs indicated for reception through specific reception indication information. Instead of continuously monitoring and processing all potential PDSCHs, the terminal device performs processing only when explicitly indicated, reducing unnecessary power consumption while maintaining reliable reception capability for required data streams.
Solution Approach 2:
The terminal device autonomously determines which PDSCHs to receive based on reception indication information, eliminating the need for continuous network scheduling commands. This self-service mechanism allows the terminal to independently manage its processing resources, activating reception functions only when needed, thereby reducing power consumption while ensuring reliable data reception for both unicast and multicast services.
3Productivity
If the network device schedules overlapping PDSCHs for unicast and multicast services, then bandwidth utilization is improved, but scheduling complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the scheduling control by introducing distinct reception indication information for unicast and multicast PDSCHs. The network device can independently configure and signal reception requirements for each service type, allowing overlapping time-domain schedules without conflating control mechanisms. This segmentation enables efficient bandwidth utilization through overlapping allocations while managing scheduling complexity through structured, separate control planes.
Solution Approach 2:
The patent introduces reception indication information as an intermediary mechanism between the network device and terminal device for managing overlapping PDSCHs. This intermediary carries specific instructions about which PDSCHs should be received, decoupling the scheduling complexity from the resource allocation itself. The network device can schedule overlapping resources efficiently while the intermediary signal manages the complexity of coordinating unicast and multicast receptions.
Data Source
AI summary
Disclosed is a data transmission method, comprising: when a first condition is met, a terminal device simultaneously receiving first data and second data, wherein the first data is carried on a first physical downlink shared channel (PDSCH); and the second data is carried on a second PDSCH. Further disclosed are an electronic device and a storage medium.