UWB Scheduling With Bitmap Offsets to Reduce Signaling Overhead
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Solution Overview
Problem
Existing scheduling information elements for UWB applications have high signaling overheads, limiting flexibility and efficiency in managing UWB devices.
Innovation Solution
A scheduling method that utilizes a time unit bitmap and bitmap offset to determine when UWB devices transmit signals, reducing signaling overheads by implicitly indicating the start time unit and allowing for flexible scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional scheduling information elements are used for UWB applications, then scheduling functionality is provided, but signaling overheads are high
Solution Approach 1:
The patent extracts the start time unit indication from the bitmap structure by introducing a separate field. This separates the time allocation function into two parts: the bitmap offset field indicates the start position, and the truncated bitmap indicates resource allocation relative to that start position. This extraction reduces the total number of bits required while maintaining scheduling functionality.
Solution Approach 2:
The scheduling information element is segmented into multiple fields with distinct functions: bitmap offset field for start time indication and a truncated bitmap for resource allocation. This segmentation allows each field to be optimized independently, reducing overall signaling overhead while preserving complete scheduling information.
2Loss of information
If bitmap size is reduced to lower signaling overheads, then signaling efficiency improves, but scheduling flexibility may be limited
Solution Approach 1:
The patent introduces a new dimension to the scheduling representation by adding the bitmap offset field. This transforms the resource indication from a single-dimensional bitmap into a two-dimensional structure where the offset field provides the starting position dimension and the truncated bitmap provides the resource allocation dimension. This dimensional expansion maintains scheduling flexibility while reducing total bit requirements.
Solution Approach 2:
The bitmap offset field performs the preliminary action of indicating the start time unit before the truncated bitmap specifies resource allocation. This preliminary indication allows the truncated bitmap to focus only on the relevant resource allocation bits, reducing the total bitmap size while maintaining the ability to schedule resources flexibly across different time units.
Data Source
AI summary
The present disclosure relates to scheduling methods for an ultra-wideband (UWB) and related products. One example method includes generating scheduling information and sending the scheduling information, where the scheduling information includes a time unit bitmap and a bitmap offset, the time unit bitmap indicates whether a time unit is used by a UWB device to transmit a UWB signal, the bitmap offset is used to determine a start time unit in which the UWB device transmits the UWB signal, and a time unit corresponding to a 1st bit of the time unit bitmap is the start time unit.