Single-Cell Multi-Transmission PDSCH Dynamic Resource Allocation
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Solution Overview
Problem
Existing mobile communication technologies, such as 3GPP LTE, face inefficiencies in transmitting group communication data to multiple user equipment (UEs) due to static MBMS transmission that occupies entire system bandwidth and does not allow dynamic adjustment based on user distribution or traffic load, leading to resource wastage and service interruptions during cell-to-cell movement.
Innovation Solution
A method and apparatus for dynamically transmitting and receiving multi-transmission data through a Physical Downlink Shared Channel (PDSCH) in a single cell, involving UE and base station systems that receive and transmit system information and control messages to identify and manage single-cell multi-transmission, minimizing service disruptions during cell movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MBMS transmission is used for group communication, then data can be transmitted to multiple UEs, but the entire system bandwidth is occupied and cannot be dynamically adjusted
Solution Approach 1:
The patent segments the transmission approach by introducing single-cell multi-transmission as a complementary method to MBMS. Instead of relying solely on system-wide MBMS that occupies entire bandwidth, the patent divides the solution into cell-specific multi-transmission that can be dynamically activated based on local user distribution, thus segmenting the rigid MBMS structure into flexible cell-level operations
Solution Approach 2:
The patent applies dynamics by enabling base stations to dynamically activate or deactivate single-cell multi-transmission based on real-time user distribution and traffic load. The network can flexibly adjust the number of UEs receiving group communication data by controlling which base stations perform multi-transmission, transforming the static MBMS framework into a dynamic system that adapts to changing conditions
2Productivity
If MBMS transmission is used for group communication, then data can be transmitted to multiple UEs, but radio resources are wasted when not all resources are used
Solution Approach 1:
The patent applies partial action by implementing single-cell multi-transmission that operates only in specific cells where group communication is actually needed, rather than activating MBMS across the entire network. This allows the system to use only the necessary radio resources in specific locations, avoiding the waste of activating system-wide MBMS when only a few UEs in specific cells need group communication services
Solution Approach 2:
The patent applies local quality by allowing different cells to have different transmission characteristics. Each base station can independently activate single-cell multi-transmission based on local user distribution and traffic conditions, creating a heterogeneous network where some cells perform multi-transmission while others use unicast, optimizing radio resource allocation at the local level rather than uniformly across the entire system
3Productivity
If MBMS transmission is used for group communication, then data can be transmitted to multiple UEs, but unicast and multiplexing are not allowed in the same subframe
Solution Approach 1:
The patent merges multiple transmission modes by allowing single-cell multi-transmission to coexist with unicast transmission in the same subframe. Unlike MBMS which forces a choice between group communication and unicast, the patent combines both approaches, enabling base stations to simultaneously serve group communication UEs through multi-transmission and individual UEs through unicast, thus merging the functionality of different transmission modes
Solution Approach 2:
The patent applies multi-functionality by designing a system where base stations can perform both single-cell multi-transmission and unicast transmission using the same physical resources. The base station becomes a universal node that can dynamically switch between or combine different transmission modes depending on the specific service requirements, making the system capable of handling both group communication and individual communication needs simultaneously
4Loss of energy
If single-cell multi-transmission is used, then radio resources are efficiently utilized, but service continuity during cell movement must be maintained
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure single-cell multi-transmission parameters and control information in base stations before UEs perform cell reselection. When a UE moves to a new cell, the target base station already has the necessary configuration to continue group communication services, allowing the UE to quickly resume service without interruption by reading pre-configured control information from system information blocks
Data Source
AI summary
Provided are a method and an apparatus for providing point-to-multipoint transmission in a single cell in a mobile communication network. The method may include receiving system information for single-cell multi-transmission in a primary cell (PCell); receiving single-cell multi-transmission control information in the primary cell; and checking whether a neighboring cell provides a single-cell multi-transmission, using the single-cell multi-transmission control information.