Sidelink Scheduling via Interference Suppression Reporting
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Solution Overview
Problem
Current multi-antenna sidelink communication technologies in V2X networks face inefficiencies in scheduling sidelink transmissions, leading to suboptimal resource allocation and increased interference due to the need for orthogonal resource allocation without leveraging multi-antenna capabilities for interference mitigation.
Innovation Solution
Implementing a method where sidelink communication devices report their ability to suppress interference using multi-antenna techniques, such as beamforming and MIMO, to a network entity, which then allocates sidelink radio resources based on this information, allowing for non-orthogonal resource reuse and enhanced SINR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If orthogonal resource allocation is used to prevent interference between nearby UEs, then interference is mitigated, but spectral efficiency deteriorates due to inability to reuse radio resources
Solution Approach 1:
The patent changes the scheduling parameter from binary orthogonal/non-orthogonal allocation to a continuous spectrum based on multi-antenna capability metrics. The network entity allocates resources based on reported capability values that indicate the degree of interference mitigation ability, allowing flexible transition between orthogonal and non-orthogonal allocation modes.
Solution Approach 2:
The patent introduces dynamic resource allocation where the orthogonality of resource allocation is not fixed but adapts based on real-time multi-antenna capability reporting. The network entity dynamically adjusts whether to allocate orthogonal or non-orthogonal resources based on the reported capability metrics from each UE.
2Productivity
If multi-antenna techniques are used for interference mitigation, then spectral efficiency improves through resource reuse, but device complexity increases due to additional antenna components and processing
Solution Approach 1:
The patent implements self-service by having UEs autonomously evaluate and report their own multi-antenna capability metrics to the network entity. Each UE independently determines its ability to mitigate interference using multiple antennas and communicates this capability information, allowing the network to make informed scheduling decisions without centralized control of the complex antenna processing.
3Object-affected harmful factors
If the sidelink scheduler allocates orthogonal resources without sidelink channel knowledge, then interference is prevented, but resource allocation efficiency deteriorates due to lack of channel state information
Solution Approach 1:
The patent implements feedback mechanisms where UEs report their multi-antenna capability metrics and channel state information to the network entity. The network entity uses this feedback information to make optimized resource allocation decisions, transitioning from blind orthogonal allocation to informed scheduling that considers both interference constraints and channel conditions.
Data Source
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AI summary
The invention relates to a sidelink communication device (i, 101) which comprises: a transceiver (103) comprising a plurality of antennas and configured to communicate using one or more of the plurality of antennas with at least one neighboring sidelink communication device (j) using one or more sidelink radio resources of a plurality of sidelink radio resources allocated by a network entity (131), in particular a base station; and a processor (105) configured to determine a measure for the ability of the sidelink communication device (i, 101) to suppress interference to and/or from at least one other neighboring sidelink communication device (k) using one or more of the plurality of antennas; wherein the transceiver (103) is further configured to transmit to the network entity (131) information about the measure for the ability of the sidelink communication device (i, 101) to suppress interference to and/or from the at least one other neighboring sidelink communication device (k), in particular for allocation of the one or more sidelink radio resources by the network entity (131).