Uplink Packet Stitching for Self-Scheduled Joint Decoding

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Solution Overview

Problem

Wireless communication systems face challenges in managing self-scheduled uplink transmissions, particularly in reducing network entity processing complexity while maintaining coding gain and time-frequency diversity, especially when using smaller packets.

Innovation Solution

User equipment (UE) transmits different portions of a coded packet across multiple time-frequency resources with self-decodable control information, enabling the network entity to stitch and jointly decode these portions efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If self-scheduled uplink transmissions use smaller packets, then network entity processing complexity is reduced, but coding gain and time-frequency diversity are compromised

Engineering Contradiction:

Improvenetwork entity processing complexityVSAvoidcoding gain

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent divides a coded packet into multiple portions and transmits them across multiple time-frequency resources. Each portion contains control information for independent decoding, allowing the network entity to process smaller segments while maintaining the ability to reconstruct the complete packet through joint decoding, thus preserving coding gain while reducing processing complexity per resource

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent embeds control information within each packet portion that enables self-decoding of that portion while also containing metadata necessary for joint decoding of all portions. This nested structure allows the network entity to decode individual portions independently (reducing complexity) while still accessing the complete coded information (maintaining coding gain)

Inventive Principle:

Principle #7Nested doll (Nesting)

2Device complexity

If self-scheduled uplink transmissions use smaller packets, then network entity processing complexity is reduced, but time-frequency diversity is compromised

Engineering Contradiction:

Improvenetwork entity processing complexityVSAvoidtime-frequency diversity

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent segments the coded packet across multiple time-frequency resources, with each segment containing control information for independent decoding. This segmentation enables transmission over diverse time-frequency paths while allowing the network entity to process each segment independently, reducing processing complexity while maintaining time-frequency diversity through the distributed transmission structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent distributes packet portions across multiple time-frequency dimensions, creating a multi-dimensional transmission structure. Each dimension (time slot, frequency resource) carries a portion with self-decodable control information, enabling the network entity to exploit time-frequency diversity while processing manageable segments rather than a single large packet

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Productivity

If multiple units with control information are transmitted across multiple time-frequency resources, then system capacity and spectral efficiency are enhanced, but transmission overhead increases

Engineering Contradiction:

Improvesystem capacityVSAvoidtransmission overhead

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The control information embedded in each packet portion serves multiple functions: it enables independent decoding of that portion, provides metadata for joint decoding of all portions, and contains necessary scheduling information. This multi-functionality reduces the need for separate control channels and signaling overhead while enhancing system capacity through efficient resource utilization

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges control information and data portions into unified transmission units where control information is embedded within each data portion. This merging eliminates separate control channel transmissions and reduces overall overhead while enabling parallel processing of multiple units across time-frequency resources, thereby enhancing system capacity

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20260040302A1Control information-based packet stitching of self-scheduled uplink transmissions

Publication Date: 2026.02.05 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communication are described. Various aspects relate generally to packet stitching for user equipment (UE) self-scheduled transmissions based on UE-provided control information. Some aspects more specifically relate to a UE transmitting different portions of a coded packet via different time-frequency resources from an uplink resource pool associated with UE self-scheduled transmissions and providing, to a network entity, control information that the network entity may use to stitch the portions of the coded packet together for joint decoding. The UE may transmit each portion of the coded packet, along with accompanying control information, within a respective unit of a set of multiple units. In some examples, to facilitate packet stitching and joint decoding at the network entity, the respective control information within each unit may at least indicate a location of that unit within an ordered sequence of the set of units.