PC5 Sidelink Resource Allocation With AMBR Feedback
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing sidelink transmission resources, particularly in allocating resources based on aggregated maximum bit rates (AMBR) for PC5 unicast links and configuring sidelink bearers in a wireless communication system, especially for aperiodic traffic and different packet types.
Innovation Solution
The apparatus and method provide mechanisms for determining and managing PC5-LINK-AMBR, allocating sidelink radio resources, and configuring sidelink radio bearers (SLRB) based on packet types, enabling efficient resource allocation for sidelink communication, including unicast, groupcast, and broadcast methods, and supporting various services with different data requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resources are allocated without considering PC5-LINK-AMBR, then resource allocation is simple and fast, but data transmission quality deteriorates and service requirements cannot be met
Solution Approach 1:
The patent applies parameter changes by introducing PC5-LINK-AMBR as a new control parameter in the resource allocation process. The base station modifies its allocation behavior based on this parameter, adjusting resource distribution to match the aggregated maximum bit rate capabilities of PC5 unicast links, thereby improving data transmission quality while managing complexity through structured parameter-based control
Solution Approach 2:
The patent implements feedback mechanisms where the base station receives and processes PC5-LINK-AMBR information from the terminal, uses this feedback to adjust resource allocation decisions, and monitors transmission quality. This closed-loop approach enables the system to adapt resource distribution based on actual link capabilities and transmission requirements, resolving the contradiction between reliability and complexity
2Productivity
If sidelink bearers are configured for each packet, then packet processing is precise and efficient, but configuration complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the packet processing task into distinct phases: packet type identification, SLRB configuration selection, and resource allocation. This segmentation allows the system to handle packet processing efficiently by routing different packet types through optimized paths while reducing overall configuration complexity through modular processing stages
Solution Approach 2:
The patent implements preliminary action by pre-configuring SLRB parameters for different packet types before actual data transmission occurs. The base station prepares configuration templates and resource allocation plans in advance, so that when packets arrive, the system can quickly match them to pre-established configurations, significantly improving processing efficiency while avoiding the complexity of real-time configuration generation
3Reliability
If resources are allocated without AMBR consideration, then allocation speed is fast, but service quality and data rate requirements cannot be satisfied
Solution Approach 1:
The patent applies preliminary action by having the terminal and base station exchange and process AMBR information before actual resource allocation occurs. This advance preparation allows the system to pre-determine appropriate resource levels based on link capabilities, so that when allocation is needed, the process is faster and more accurate, reducing both service quality degradation and allocation time
Solution Approach 2:
The patent uses parameter changes by dynamically adjusting resource allocation parameters based on PC5-LINK-AMBR values. The base station modifies allocation decisions in real-time based on the actual bit rate capability of the link, enabling the system to quickly adapt to changing conditions while maintaining service quality. This parameter-driven approach balances speed and quality by using simple, direct adjustments rather than complex reconfiguration processes
Data Source
AI summary
The disclosure relates to a 5G or a 4G communication system for supporting a higher data transmission rate. The present disclosure relates to a method and a device for processing sidelink resource allocation in a V2X system. According to various embodiments of the present disclosure, in a wireless communication system, a terminal may include at least one transceiver and at least one processor coupled to the at least one transceiver. The at least one processor may be configured to: acquire aggregate maximum bit rate (AMBR) information regarding a PC5 unicast link for sidelink communication of the terminal; provide the AMBR information to a base station; receive information regarding a resource for the sidelink communication, which has been allocated on the basis of the AMBR information, from the base station; and transmit data following the sidelink communication to another terminal on the basis of the resource.