5G Groupcast Transmission Using LBRM for Multi-UE Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, providing groupcast, multicast, and broadcast services to multiple terminals using separate data transmissions leads to inefficient use of frequency and time resources.
Innovation Solution
Implementing limited buffer rate matching (LBRM) with distinct configurations for data transmission to a single user equipment (UE) and multiple UEs, optimizing data coding and decoding processes for efficient groupcast and multicast services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate data transmissions are used for each terminal in groupcast, multicast, and broadcast services, then individual service quality can be maintained, but frequency and time resources are used inefficiently
Solution Approach 1:
The patent combines multiple separate data transmissions into a single unified transmission by applying LBRM. Multiple terminals receive the same coded data through one transmission instance, merging what would otherwise be separate transmission resources into a shared resource pool, thereby improving overall resource utilization while maintaining service quality through appropriate coding configurations.
Solution Approach 2:
The patent creates a universal transmission mechanism that serves multiple terminals simultaneously through groupcast, multicast, and broadcast services. The LBRM configuration enables a single transmission to fulfill multiple service functions, allowing the system to adapt to different terminal counts and service types without requiring separate dedicated transmissions for each terminal.
2Ease of manufacture
If LBRM is applied with the same configuration for all transmissions, then implementation is simple, but efficiency is reduced when transmitting to multiple UEs
Solution Approach 1:
The patent introduces dynamic LBRM configuration that adapts based on the number of recipient UEs. When transmitting to a single UE, one configuration is applied, while when transmitting to multiple UEs, a different configuration is used. This dynamic adaptation optimizes transmission efficiency for different scenarios while maintaining implementation feasibility through rule-based configuration selection.
Solution Approach 2:
The patent changes LBRM parameters based on transmission conditions, specifically the number of recipient UEs. By adjusting LBRM configuration parameters dynamically according to the service scenario (unicast vs. groupcast/multicast/broadcast), the system achieves optimal transmission efficiency for each case while keeping the overall implementation manageable through standardized parameter adjustment rules.
Data Source
AI summary
The disclosure relates to converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT), and may be applied to intelligent services based on the 5G communication technology and IoT-related technology. To do so, a method and apparatus are provided for transmitting groupcast/broadcast/multicast data and control information in the downlink and uplink. The method and apparatus include features for transmitting to a user equipment (UE), configuration information for multicast and broadcast services (MBS), encoding a first bit sequence for the MBS based on a channel coding, identifying a transport block size (TBS) for limited buffer rate matching (LBRM) based on the configuration information, performing the LBRM to the encoded first bit sequence based on the identified TBS, and transmitting to the UE, a second bit sequence identified based on the LBRM.