Sidelink Discovery Message Forwarding with Termination Conditions
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in sidelink discovery procedures due to high overhead and interference, particularly in beam sweeping operations, where techniques for forwarding discovery messages are not well-defined, leading to power consumption and reliability issues.
Innovation Solution
Implementing a method where user equipment (UE) can forward discovery messages based on configured parameters, including forwarding termination conditions, to determine whether to use broadcast or unicast transmissions, and only forward messages if certain conditions such as early termination or discovery response messages are not received within a termination window, thereby reducing unnecessary transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discovery messages are forwarded extensively in beam sweeping operations, then discovery coverage is improved, but overhead and interference increase
Solution Approach 1:
The patent applies preliminary action by configuring UEs with forwarding termination parameters before the discovery procedure begins. These parameters pre-establish the conditions under which forwarding should stop, allowing UEs to make decisions without extensive message exchanges. The termination window and condition parameters are configured in advance to control the forwarding process efficiently.
Solution Approach 2:
The patent implements feedback mechanisms where UEs monitor for specific conditions during the termination window, such as receiving discovery response messages or detecting beam training completion. This feedback allows the system to dynamically stop forwarding when the discovery objective is achieved, preventing unnecessary message overhead while ensuring adequate discovery coverage.
2Reliability
If discovery messages are forwarded to all UEs, then discovery completeness is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring UEs with forwarding termination parameters including termination window timing and stopping conditions. This allows UEs to know in advance when to stop forwarding, eliminating the need to continuously transmit messages and thereby reducing power consumption while maintaining discovery completeness through the configured termination criteria.
3Measurement precision
If beam sweeping operations are performed frequently, then beam training accuracy is improved, but interference increases
Solution Approach 1:
The patent applies preliminary action by configuring UEs with forwarding termination parameters before beam sweeping begins. This pre-configuration establishes control rules that limit the duration and scope of beam sweeping operations, allowing accurate beam training to be performed within constrained time windows while reducing overall interference through the termination conditions that stop operations when objectives are met.
Data Source
AI summary
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for sidelink discovery message forwarding. In some implementations, a first user equipment (UE) may receive a discovery message from a second UE. The discovery message may be part of a beam training procedure between the first UE and the second UE. The first UE may forward the discovery message to one or more other UEs based on a condition associated with one or more forwarding termination parameters being satisfied. The first UE may, in some implementations, select one of a broadcast transmission or a unicast transmission for forwarding the discovery message based on one or more parameters associated with the UE. The first UE may transmit the discovery message from the second UE to the one or more other UEs using the selected broadcast or unicast transmission when the condition is satisfied.