Intra-Slot Frequency Hopping for Special Slot Symbol Allocation

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Solution Overview

Problem

In existing communication systems, intra-slot frequency hopping on special slots can lead to resource wastage due to a high number of unavailable symbols, causing failure of uplink TBoMS transmission on the first hop.

Innovation Solution

The method involves determining available symbols in special slots and performing intra-slot frequency hopping only on these symbols, or skipping frequency hopping on the special slot when necessary, ensuring a sufficient number of available symbols in each hop.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If intra-slot frequency hopping is enabled for uplink TBoMS transmission on special slots using the same symbol position as regular slots, then frequency hopping consistency is maintained, but resource utilization deteriorates due to high number of unavailable symbols causing transmission failure

Engineering Contradiction:
Improvefrequency hopping consistencyVSAvoidresource utilization
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

The patent applies local quality by making the symbol position determination for frequency hopping in special slots different from regular slots. Specifically, when special slot indication information indicates a special slot, the terminal determines the symbol position based on the actual available symbols in that special slot rather than using the fixed symbol position from regular slots. This localized adaptation resolves the contradiction by maintaining frequency hopping functionality while avoiding unavailable symbols to improve resource utilization.

Inventive Principle:
Principle #3Local quality

2Device complexity

If the same symbol position is used for frequency hopping in both regular and special slots, then configuration simplicity is maintained, but transmission reliability deteriorates due to unavailable symbols in the first hop

Engineering Contradiction:
Improveconfiguration simplicityVSAvoidtransmission reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent applies dynamics by making the symbol position determination adaptive rather than static. The terminal dynamically adjusts the symbol position for frequency hopping in special slots based on the actual slot format and available symbols, as indicated by the special slot indication information. This dynamic adjustment maintains transmission reliability by avoiding unavailable symbols while keeping the configuration relatively simple through the use of indication bits.

Inventive Principle:
Principle #15Dynamics

3Quantity of substance

If frequency hopping is performed on all allocated symbol resources in special slots, then resource allocation completeness is maintained, but resource waste increases due to hopping on unavailable symbols

Engineering Contradiction:
Improveresource allocation completenessVSAvoidresource waste
Core Design Contradiction:
Quantity of substanceVSLoss of substance

Solution Approach 1:

The patent applies preliminary action by having the terminal first determine which symbols are actually available in the special slot before performing frequency hopping. The special slot indication information is used in advance to identify the valid symbol positions, and frequency hopping is then performed only on these determined available symbols. This preliminary determination prevents resource waste by avoiding hopping on unavailable symbols while maintaining complete resource allocation on the valid symbols.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4369816B1Frequency hopping method and communication device
Publication Date: 2026.04.22 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • EP4369816B1 patent drawingFigure 1~2
  • EP4369816B1 patent drawingFigure 3
  • EP4369816B1 patent drawingFigure 4

AI summary

The present invention belongs to the technical field of communications. Provided are a frequency hopping method and apparatus, and a user equipment, a base station and a storage medium. The method comprises: acquiring an instruction which is configured by a base station and is used for instructing to perform intra-slot frequency hopping, and acquiring a symbol resource in a special slot, which symbol resource is allocated by the base station and is used for a data transmission; performing intra-slot frequency hopping in an uplink slot, and determining an available symbol in the special slot; and performing intra-slot frequency hopping on the available symbol in the symbol resource, or not performing intra-slot frequency hopping in the special slot. By means of the method provided in embodiments of the present invention, resource waste can be avoided, thereby saving on costs, and ensuring the stability of frequency hopping.