PRB Resource Configuration for NR LBT Subbands With Intra-Carrier Guard Bands
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Solution Overview
Problem
Existing technologies fail to effectively configure frequency domain resources in the presence of intra-carrier guard bands, leading to inefficiencies and resource wastage in unlicensed band communications, particularly in NR Rel16, where wideband carriers require LBT subbands and intra-carrier guard bands to avoid interference.
Innovation Solution
A method and apparatus for determining the position of intra-carrier guard band PRBs and configuring target PRBs based on indication information, configuration parameters, and user equipment processing capabilities, allowing flexible resource allocation even with intra-carrier guard bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intra-carrier guard band is reserved to prevent interference between adjacent LBT subbands, then interference protection is improved, but frequency domain resource utilization deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-determining the positions of intra-carrier guard band PRBs based on LBT subband configuration and user equipment processing capability before resource allocation. The network device calculates and indicates the guard band PRB positions in advance, allowing the user equipment to properly identify and exclude these positions from available resources, thereby preventing interference while optimizing resource utilization.
Solution Approach 2:
The patent applies local quality by treating different PRBs differently based on their function. The intra-carrier guard band PRBs are identified as special elements that should be excluded from data transmission, while other PRBs remain available for normal use. This localized differentiation ensures that guard bands provide necessary interference protection without unnecessarily reducing overall resource availability.
2Reliability
If LBT subband is used as granularity for scheduling, then channel access control is improved, but resource configuration complexity deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the frequency domain into LBT subbands as the basic scheduling unit, and further segmenting each subband into usable PRBs and guard band PRBs. This hierarchical segmentation allows the system to maintain simple LBT-based channel access control while managing the complexity of resource configuration through structured PRB grouping and indication mechanisms.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of indication information exchanged between network device and user equipment. This intermediary carries the configuration parameters and guard band position information, simplifying the resource configuration process by centralizing the complexity management in the signaling interface rather than requiring complex local calculations at the user equipment.
3Adaptability or versatility
If guard band PRB position is determined based on user equipment processing capability, then adaptability is improved, but configuration flexibility deteriorates
Solution Approach 1:
The patent applies dynamics by making the guard band PRB position determination adaptive to user equipment processing capability. The network device dynamically adjusts the guard band configuration based on the specific capabilities of each user equipment, allowing the system to optimize performance for different device types while maintaining a manageable configuration process through standardized capability indication procedures.
Data Source
AI summary
A resource configuration method and apparatus, a device, and a storage medium are provided. The resource configuration method includes: receiving first indication information and a configuration parameter that are sent by a network device, where the first indication information is used to indicate initially configured PRBs in at least one LBT subband, and the configuration parameter includes an SCS; determining a position of at least one intra-carrier guard band PRB in the at least one LBT subband based on at least one of the first indication information, the configuration parameter, and a processing capability of the user equipment; and determining a target PRB based on the initially configured PRBs and the position of the intra-carrier guard band PRB.