Wireless Resource Allocation for Heterogeneous Service Data
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Solution Overview
Problem
In 5G wireless communication systems, heterogeneous services like eMBB and URLLC face challenges in resource allocation and data reception efficiency due to differing characteristics, leading to deterioration in eMBB service performance when URLLC packets are transmitted using resources allocated for eMBB services.
Innovation Solution
A method and apparatus for efficiently allocating resources and providing explicit/implicit resource allocation information in a wireless communication system, allowing for accurate recognition and decoding of heterogeneous services by scheduling and transmitting service data using dedicated resources and indication information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If URLLC packets are transmitted using resources allocated for eMBB services, then URLLC service requirements (ultra-high reliability and low latency) are satisfied, but eMBB service reception performance deteriorates
Solution Approach 1:
The resource allocation is segmented into separate indication mechanisms: one for eMBB service resources and another for URLLC service resources. The base station transmits first indication information for eMBB resource allocation and second indication information for URLLC resource allocation, allowing the terminal to distinguish between the two service types and process them separately, thus preventing eMBB performance deterioration while maintaining URLLC reliability
Solution Approach 2:
Indication information acts as an intermediary mechanism that mediates between eMBB and URLLC service transmissions. The base station uses indication information to explicitly tell the terminal which resources are allocated for which service type, enabling the terminal to correctly identify and process URLLC packets even when transmitted on eMBB resources, thereby resolving the conflict between the two services
2Loss of time
If resources allocated to eMBB service are reallocated to URLLC service, then URLLC service latency is reduced, but resource allocation efficiency for eMBB service decreases
Solution Approach 1:
The resource allocation system becomes dynamic through the indication information mechanism. The base station can flexibly allocate resources for URLLC services by transmitting second indication information that overrides or supplements the first indication information, allowing real-time resource reallocation without rigid pre-assignment, thus reducing URLLC latency while maintaining overall allocation efficiency
Solution Approach 2:
The system changes the parameter of resource allocation from static to dynamic by introducing indication information that can modify resource assignment on-the-fly. When URLLC traffic arrives, the base station transmits updated indication information to reallocate resources, changing the allocation state without requiring complete reconfiguration, thereby reducing latency while preserving efficiency
Data Source
AI summary
The present disclosure relates to a fifth generation (5G) or pre-5G communication system supporting a higher data transmission rate since fourth generation (4G) communication systems like long term evolution (LTE). A method for transmitting heterogeneous service data from a base station is provided. The method for transmitting data includes at least one processor configured to control to allocate a first resource by scheduling to provide the first service data to the first terminal, identify whether the second service data to be transmitted to the first terminal or the second terminal is generated using at least some of the first resource during the transmission of the first service data to the first terminal using the first resource, transmit the second service data by allocating the second service data to at least some of the first resource if the second service data is generated, and configure and transmit the second service data.