Sidelink Inter-UE Coordination via Resource Mode Switching
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Solution Overview
Problem
Existing inter-UE coordination (IUC) functions in sidelink communication are ineffective when user equipment (UE) is in mode 1, leading to poor coordination performance.
Innovation Solution
A method for inter-UE coordination based on sidelink, where UE in mode 1 requests a network device to switch to mode 2 by transmitting specific information, enabling effective IUC function execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE operates in mode 1 (network dynamic scheduling), then network control over resource allocation is improved, but inter-UE coordination function effectiveness deteriorates
Solution Approach 1:
The patent enables dynamic switching between mode 1 and mode 2 resource allocation based on operational needs. UE can request to switch from mode 1 to mode 2 when IUC function is needed, and the network can authorize this transition. This dynamic adaptability resolves the contradiction by allowing network control when needed while enabling peer-to-peer coordination when required.
Solution Approach 2:
The patent changes the resource allocation mode parameter from fixed to variable. By introducing a mechanism where UE can request mode switching and network can authorize based on conditions, the system transitions from a static mode 1 configuration to a flexible parameter that adapts to different operational scenarios, thereby improving IUC effectiveness while maintaining network control capability.
2Productivity
If UE operates in mode 2 (autonomous selection), then inter-UE coordination function is improved, but network control over resource allocation deteriorates
Solution Approach 1:
The patent creates a dynamic resource allocation system where mode 2 can be activated when IUC is needed, but only with network authorization. The network maintains control by evaluating UE requests and deciding whether to permit mode switching, thus balancing autonomous coordination capability with network oversight.
Solution Approach 2:
The patent implements a feedback mechanism where UE signals its need for IUC function (second information), network evaluates and responds with authorization decision (third information), and UE adjusts its behavior accordingly. This feedback loop ensures network control is maintained while enabling mode 2 operation when appropriate.
3Adaptability or versatility
If IUC function is activated in mode 1, then coordination capability is improved, but system complexity increases
Solution Approach 1:
The patent prepares the system in advance by having UE indicate its IUC needs through second information before actually executing coordination operations. The network pre-evaluates these requests and authorizes mode switching in advance, avoiding the need for complex real-time decisions and reducing operational complexity.
Solution Approach 2:
The patent introduces network authorization as an intermediary layer between UE IUC requests and actual mode switching. This intermediary mechanism simplifies the system by centralizing the decision-making logic in the network, which has already established policies and evaluation criteria, thereby reducing the complexity burden on individual UEs.
Data Source
AI summary
A method for inter-UE coordination based on a sidelink, including: receiving first information transmitted by a second user equipment, where the first information is configured to trigger an inter-UE coordination (IUC) function; and transmitting second information to a network device in a case where the first user equipment is in a first resource allocation mode, where the second information is configured to request the network device to configure the first user equipment to be in a second resource allocation mode.