Superimposed System Information on PDSCH to Cut Signaling Overhead
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Solution Overview
Problem
High-frequency wireless networks face challenges with high path loss and increased signaling overhead due to the use of narrow beams, leading to resource consumption and latency in system information transmission.
Innovation Solution
Superimposing system information on the resources allocated for data communication, such as PDSCH, reduces the need for separate transmissions and conserves network resources by using the same time and frequency domain resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate transmissions are used for system information and data communication, then system information can be transmitted reliably, but signaling overhead and resource consumption increase
Solution Approach 1:
The patent combines system information transmission with data communication by superimposing system information onto the data communication resources. The network node transmits both the data communication and system information using the same time and frequency domain resources, eliminating the need for separate transmissions and reducing signaling overhead while maintaining reliability through joint decoding at the UE.
Solution Approach 2:
The data communication resources are made multi-functional by enabling them to carry both data and system information simultaneously. The same physical resources serve dual purposes: data transmission and system information broadcast, thereby reducing the total resource consumption and eliminating dedicated signaling channels.
2Reliability
If separate transmissions are used for system information and data communication, then system information can be transmitted clearly, but transmission latency increases
Solution Approach 1:
By merging system information transmission with data communication in the same time-frequency resources, the patent eliminates the sequential transmission process and its associated latency. The UE receives and decodes both data and system information simultaneously from the same physical downlink shared channel, significantly reducing transmission time and latency compared to separate transmissions.
3Reliability
If narrow beams are used in high-frequency networks, then directional communication is improved, but path loss increases and resource consumption increases
Solution Approach 1:
The patent applies local quality by enabling beam-specific transmission of system information tailored to each UE's directional beam. Instead of broadcasting system information to all UEs using all beams, the network transmits system information only on the specific beam resources allocated to each UE, reducing unnecessary energy consumption and path loss while maintaining directional communication performance.
4Ease of operation
If dedicated resources are allocated for system information transmission, then system information can be transmitted independently, but network resource consumption increases
Solution Approach 1:
The patent makes data communication resources universal by enabling them to serve multiple functions: data transmission and system information broadcast. The same physical downlink shared channel resources are used for both purposes, eliminating the need for dedicated system information resources and reducing overall network resource consumption while maintaining operational independence through joint decoding capabilities.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, scheduling information associated with a data communication, the scheduling information indicating a resource allocation associated with the data communication. The UE may receive, from the network node, the data communication and system information that is superimposed on the resource allocation associated with the data communication. Numerous other aspects are described.