Common Downlink Control Channel Beam Association
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Solution Overview
Problem
The existing common downlink control channel transmission methods in LTE systems lack flexibility due to the omnidirectional transmission of the common downlink control channel, which is not adaptable to varying user equipment (UE) positions and beam directions, leading to inefficient resource utilization and increased power consumption.
Innovation Solution
The proposed method associates the resource set for transmitting the common downlink control channel with a target signal, allowing the UE to determine the optimal resource set for receiving the channel, thereby enabling flexible adjustment and reducing the need for omnidirectional transmission and beam scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If omnidirectional transmission is used for the common downlink control channel, then all user equipments can receive the channel in any direction, but the transmission flexibility is insufficient and resource utilization is inefficient
Solution Approach 1:
The patent applies local quality by associating the common downlink control channel with specific beam directions rather than omnidirectional transmission. Each beam serves a specific spatial region, allowing the network to transmit control channels only in directions where user equipments are located, thereby improving transmission flexibility and reducing unnecessary power consumption in empty directions.
Solution Approach 2:
The patent implements dynamics by enabling the network to dynamically select and adjust beam directions for common downlink control channel transmission based on user equipment distribution and channel conditions. This dynamic beam management allows the system to adapt transmission resources to actual needs, improving flexibility while reducing energy waste.
2Productivity
If omnidirectional transmission is used for the common downlink control channel, then coverage is provided in all directions, but resource utilization becomes inefficient due to lack of directional optimization
Solution Approach 1:
The patent applies segmentation by dividing the omnidirectional coverage into multiple discrete beam directions. Each beam is independently managed and associated with specific resource sets, allowing the network to activate only the necessary beams for current user equipment locations. This segmentation improves resource utilization by eliminating waste in unused directions while maintaining manageable complexity through structured beam organization.
3Adaptability or versatility
If the common downlink control channel is transmitted only within the Common Search Space, then additional signaling is not needed, but the transmission flexibility is insufficient for adapting to varying user equipment positions and beam directions
Solution Approach 1:
The patent applies self-service by enabling user equipments to autonomously determine their associated beam directions and corresponding resource sets for common downlink control channel reception. Each UE identifies its position and selects the appropriate beam and resource set without requiring explicit network signaling, thereby achieving adaptability to varying UE positions while minimizing signaling overhead.
Data Source
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Figure 6(a)~8
AI summary
A common downlink control channel transmission method and a relevant device are provided. The common downlink control channel transmission method includes: receiving, by a UE, a target signal from a network side device, a resource set for transmitting a common downlink control channel is associated with the target signal; and determining, by the UE, the resource set in accordance with the target signal, and receiving the common downlink control channel from the network side device through the resource set.