Redcap Terminal Channel Resource Position Determination
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Solution Overview
Problem
The introduction of Redcap terminals in wireless communication networks poses a challenge in utilizing bandwidth parts (BWP) effectively, particularly in determining the resource position of channels for these terminals.
Innovation Solution
A method is provided for determining the resource position of a physical layer channel used by a Redcap terminal, based on configuration information of an initial uplink BWP. This method involves identifying whether a second initial uplink BWP is configured and determining the mapping relationship between the physical layer channel and the initial uplink BWP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a second initial uplink BWP is configured for Redcap terminals, then channel resource position determination becomes ambiguous, but if only a first initial uplink BWP is configured, then channel monitoring coverage is insufficient
Solution Approach 1:
The patent segments the BWP configuration into two distinct parts: a first initial uplink BWP for common channels (PUCCH, PRACH) and a second initial uplink BWP for dedicated data channels (PUSCH). This segmentation allows each BWP to have a specific function, eliminating the ambiguity of resource position determination while ensuring comprehensive channel monitoring coverage.
Solution Approach 2:
The patent applies local quality by assigning different properties to different BWPs: the first initial uplink BWP is optimized for control channels with specific resource allocation rules, while the second initial uplink BWP is optimized for data channels with flexible resource allocation. This local differentiation resolves the contradiction by providing specialized configurations for different channel types.
2Adaptability or versatility
If multiple initial uplink BWPs are configured, then channel resource allocation flexibility increases, but then the mapping relationship between channels and BWPs becomes complex
Solution Approach 1:
The patent segments the mapping relationship into clear rules: control channels (PUCCH, PRACH) are mapped to the first initial uplink BWP, while data channels (PUSCH) are mapped to the second initial uplink BWP. This segmentation simplifies the overall mapping complexity while maintaining allocation flexibility for different channel types.
Solution Approach 2:
Instead of allowing any channel to map to any BWP (which would be complex), the patent inverts the approach by establishing fixed mapping relationships where specific channel types are restricted to specific BWPs. This inversion reduces complexity while preserving the necessary flexibility through configuration parameters.
3Measurement precision
If configuration information is provided for each channel-BWP mapping, then mapping precision improves, but then signaling overhead increases
Solution Approach 1:
The patent creates a universal configuration framework where a single set of configuration information can define the mapping relationship for multiple channels. The configuration parameters (such as bwp-Id, subcarrier spacing, cyclic prefix length) serve multiple purposes by simultaneously defining the characteristics of the first and second initial uplink BWPs, thereby reducing signaling overhead while maintaining precise mapping relationships.
Data Source
AI summary
A method for determining a resource position of a channel is performed by a first type of terminal, and includes: determining, based on configuration information of an initial uplink bandwidth part (BWP), a resource position of a physical layer channel used by the first type of terminal, wherein the initial uplink BWP includes at least one of a first initial uplink BWP or a second initial uplink BWP; and the configuration information indicates at least one of: whether the second initial uplink BWP is configured, or a mapping relationship between the physical layer channel and the initial uplink BWP.