Group-Common DCI for Wireless Parameter Updates
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Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face challenges in efficiently signaling communication parameters to multiple user equipment (UEs), leading to delays and excessive resource utilization due to the need for individual adjustments and RRC signaling.
Innovation Solution
Implementing a group-common downlink control information (DCI) message that conveys changes to communication parameters for multiple UEs, reducing the need for individual adjustments and minimizing network resource utilization by signaling delta values or absolute values based on previously configured settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If individual RRC signaling is used to adjust communication parameters for each UE, then parameter adjustment precision is maintained, but signaling delay increases and network resource utilization increases
Solution Approach 1:
The patent merges individual parameter adjustment signaling into a single group-common DCI message that can simultaneously update multiple UEs. This combining approach reduces the total number of signaling messages from N individual RRC messages to one group-common message, thereby reducing signaling delay and network resource utilization while maintaining parameter adjustment precision through UE-specific indicator fields within the group message.
Solution Approach 2:
The group-common DCI message is designed to serve multiple functions: it can update parameters for multiple UEs simultaneously, support both group-wide and individual parameter adjustments, and maintain backward compatibility with existing DCI structures. This multi-functionality allows the system to reduce signaling overhead while preserving the ability to make precise individual parameter adjustments when needed.
2Productivity
If group-common DCI messages are used to update parameters for multiple UEs, then signaling efficiency improves, but the ability to provide UE-specific parameter adjustments may be reduced
Solution Approach 1:
The group-common DCI message is segmented into multiple functional fields: group-common fields for applying to all UEs in the group, and UE-specific indicator fields for targeted parameter adjustments. This segmentation allows the single message to simultaneously provide both group-wide efficiency and individual customization, resolving the contradiction between signaling efficiency and adaptability.
Solution Approach 2:
The patent applies local quality by allowing different parts of the DCI message to serve different purposes: some fields contain parameters applicable to all UEs (group quality), while other fields contain UE-specific indicators for customized adjustments (individual quality). This differentiated approach within a single message structure maintains both signaling efficiency and parameter customization capability.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station (BS) may transmit, and a user equipment (UE) may receive, a group-common downlink control information (DCI) message, wherein the group-common DCI message includes information identifying at least one communication parameter for a plurality of UEs. The BS and the UE may communicate in accordance with the at least one communication parameter based at least in part on the BS transmitting the group-common DCI message to the plurality of UEs and the UE receiving the group-common DCI message. Numerous other aspects are provided.