UE-Initiated Beam Reporting with Adaptive Uplink Resource Selection
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Solution Overview
Problem
Existing UE-initiated beam management systems face challenges in efficiently reporting beam information due to uncertainties in the number of beams to be reported, leading to increased complexity and resource inefficiencies in uplink channels.
Innovation Solution
The proposed solution involves configuring UE to transmit an indication via a first uplink control channel about the number of beams to be reported, allowing the network to determine the appropriate uplink resource type for the subsequent beam report, using pre-configured associations between resource types and beam counts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE transmits beam reports without indicating the number of beams, then the beam reporting can proceed without additional signaling, but the network cannot determine the appropriate uplink resource type leading to resource inefficiency and increased complexity
Solution Approach 1:
The UE transmits an indication of the number of beams to be reported before the actual beam report transmission. This preliminary information allows the network to pre-determine the appropriate uplink resource type (PUCCH or PUSCH) and allocate resources efficiently, avoiding the need for blind detection and reducing resource waste.
Solution Approach 2:
The indication message serving as an intermediary between the UE's beam measurement and the network's resource allocation. This intermediate signaling provides the network with necessary information (number of beams) to make informed resource allocation decisions, bridging the information gap without requiring complex blind detection mechanisms.
2Loss of time
If the network allocates uplink resources without knowing the number of beams to be reported, then resource allocation can proceed without waiting for UE indication, but resource wastage increases due to uncertainty in resource type selection
Solution Approach 1:
The UE provides preliminary information about the number of beams to be reported, enabling the network to determine the appropriate resource type in advance. This eliminates the need for the network to allocate resources blindly and reduces both allocation delay and resource wastage by ensuring the correct resource type is selected from the beginning.
Solution Approach 2:
The UE's indication of the number of beams serves as feedback to the network, allowing the network to adjust its resource allocation strategy accordingly. This feedback mechanism enables the network to select the most appropriate uplink resource type (PUCCH for fewer beams, PUSCH for more beams) and minimize resource wastage while maintaining efficient allocation timing.
3Adaptability or versatility
If the UE reports a variable number of beams without prior indication, then the beam reporting can be flexible, but the network faces increased complexity in decoding and resource management
Solution Approach 1:
The UE transmits the number of beams to be reported as a preliminary indication before the actual beam report. This allows the network to know in advance how many beams will be reported and what resource type to expect, maintaining the flexibility of variable beam reporting while significantly reducing decoding complexity through predictable resource allocation.
Solution Approach 2:
The indication message conveys the parameter (number of beams) that determines the reporting format and resource requirements. By providing this parameter change information in advance, the network can adapt its decoding complexity and resource allocation to match the actual reporting needs, maintaining flexibility while optimizing processing requirements.
Data Source
AI summary
Example embodiments of the present disclosure are directed to a solution of User Equipment-Initiated Beam Management (UEIBM). A method comprises transmitting, to a second apparatus via an uplink control channel, an indication associated with an uplink resource type to be used by the first apparatus for a beam report in a further uplink channel subsequent to the uplink control channel; and transmitting, to the second apparatus, the beam report by using the further uplink channel with uplink resources of the uplink resource type.