5G Resource Allocation for URLLC via Capability Exchange
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Solution Overview
Problem
Current 5G wireless communication systems face challenges in efficiently allocating time and frequency resources, particularly for services requiring ultra-reliable low-latency communication (URLLC), which demands precise resource management to meet stringent latency and reliability requirements.
Innovation Solution
The method involves a user equipment (UE) transmitting capability information to a base station for communication using multiple transmission and reception points, receiving physical downlink shared channel (PDSCH) resource allocation information, and processing data based on this allocation, enabling efficient time and frequency resource allocation for coordinated communication techniques like non-coherent joint transmission (NC-JT).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transmission and reception points are used for coordinated communication, then signal strength and reliability are improved, but device complexity and resource allocation difficulty increase
Solution Approach 1:
The patent segments the resource allocation process into distinct phases: capability information exchange, resource allocation information transmission, and data transmission. By dividing the complex coordinated communication process into manageable segments, the system can handle multiple transmission and reception points without overwhelming complexity at any single stage.
Solution Approach 2:
The patent implements preliminary action by having the user equipment transmit capability information before actual data transmission. This preliminary exchange of capability information allows the base station to pre-plan and allocate resources appropriately, reducing the complexity of real-time resource management during coordinated communication.
2Loss of time
If shorter transmission time interval is applied for URLLC service, then latency is reduced, but resource allocation precision requirements increase
Solution Approach 1:
The patent applies dynamics by making the resource allocation adaptive to different service requirements. The system dynamically adjusts resource allocation based on the transmitted capability information and service type (eMBB vs. URLLC), allowing short transmission time intervals for URLLC while maintaining appropriate precision through dynamic parameter adjustment.
Solution Approach 2:
The patent utilizes parameter changes by allowing different transmission parameters (such as time interval, resource block allocation) to be adjusted based on service requirements. The base station changes allocation parameters according to the capability information received, enabling precise resource allocation for URLLC with short latency requirements.
3Productivity
If capability information exchange is implemented before data transmission, then resource allocation efficiency is improved, but communication overhead increases
Solution Approach 1:
The patent implements universality by designing the capability information exchange mechanism to serve multiple purposes: it characterizes the user equipment for future resource allocation, enables both eMBB and URLLC service support, and provides the basis for coordinated communication. This multi-functionality justifies the communication overhead by eliminating the need for separate capability assessment procedures.
Data Source
AI summary
The disclosure relates to a communication technique for fusing a 5th generation (5G) or pre-5G communication system with IoT technology to support higher data rates after a 4th generation (4G) communication system such as long term evolution (LTE) and a system thereof. The disclosure can be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety related services, etc.) based on 5G communication technology and IoT-related technology. According to various embodiments of the disclosure, a method and apparatus for allocating time and frequency resources for smoothly providing a service are provided.