Sidelink UE Capability Exchange With Dynamic Static Attributes

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Solution Overview

Problem

Existing wireless communication technologies, such as 5G/NR, face challenges in effectively communicating user equipment (UE) capability and assistance information over sidelinks, which are crucial for device-to-device communication but are less suitable due to the nature of direct UE interactions.

Innovation Solution

A method and apparatus for determining and transmitting sidelink communication parameters, including UE assistance and capability information, with attributes indicating whether these parameters are dynamic or static, allowing UEs to selectively communicate based on these parameters and attributes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If UE capability information and assistance information are exchanged over sidelinks using existing 3GPP standards, then communication between UEs is enabled, but the information exchange is less suitable due to the nature of direct UE interactions bypassing base station control

Engineering Contradiction:

Improvesuitability of UE capability and assistance information exchange for sidelink communicationVSAvoidreliability of sidelink communication establishment

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces sidelink-specific attributes (static/dynamic, mandatory/optional, broadcast/unicast) that are locally tailored to sidelink communication needs, differentiating them from general access link parameters. This allows each parameter to be optimized for its specific sidelink context while maintaining compatibility with existing UE capability and assistance information frameworks.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent modifies the information exchange by adding attribute parameters to existing UE capability and assistance information. These attributes (static/dynamic, mandatory/optional, broadcast/unicast) change the nature of parameter exchange to better suit sidelink requirements, transforming general-purpose information into sidelink-optimized information without fundamentally altering the existing protocol structure.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If UE capability information and assistance information are exchanged without differentiating parameter types, then information exchange is simplified, but UEs cannot selectively communicate based on specific parameter requirements

Engineering Contradiction:

Improveefficiency of sidelink communication establishmentVSAvoidcomplexity of parameter exchange protocol

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments UE capability and assistance information into distinct attribute categories (static/dynamic, mandatory/optional, broadcast/unicast). This segmentation allows receiving UEs to selectively process and act on different parameter types based on their specific communication needs, improving efficiency without requiring complete information exchange for all scenarios.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces dynamic attributes that allow parameter characteristics to change based on communication context. The static/dynamic attribute enables UEs to identify which parameters may change over time, allowing for more flexible and efficient communication establishment while maintaining protocol structure.

Inventive Principle:

Principle #15Dynamics

3Reliability

If all sidelink communication parameters are treated as mandatory, then communication reliability is improved, but flexibility and adaptability of sidelink communication are reduced

Engineering Contradiction:

Improvereliability of sidelink communicationVSAvoidflexibility of sidelink communication

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies partial action by introducing mandatory/optional attributes that allow UEs to selectively enforce parameter requirements. Not all parameters need to be mandatory for every sidelink communication scenario, enabling UEs to establish communications based on essential parameters while allowing optional parameters to be negotiated or omitted when appropriate.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The mandatory/optional attribute provides a mechanism to change the enforcement level of different parameters based on communication context. This allows the system to dynamically adjust between reliability-focused (mandatory) and flexibility-focused (optional) modes for different parameter sets, resolving the contradiction between these two goals.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11800347B2User equipment (UE) capability and assistance information exchange over sidelinks

Publication Date: 2023.10.24 QUALCOMM INC

AI summary

This disclosure provides methods, devices and systems for facilitating device-to-device (D2D) communications on sidelinks. Some implementations more specifically relate to a user equipment (UE) determining sidelink communication parameter corresponding to UE assistance information or UE capability information. The UE may also determine an attribute associated with the sidelink communication parameter, the attribute indicating the sidelink communication parameter is a dynamic parameter or a static parameter. The UE may further transmit to another UE, on a sidelink, the sidelink communication parameter and the attribute. The UE may also communicate with the other UE on the sidelink based on the transmitted sidelink communication parameter and the attribute.