5G Terminal Beam Reselection and QoS Control
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Solution Overview
Problem
Current LTE systems treat multiple flows with the same Quality of Service (QoS), making it impossible to finely control QoS at the EPC and E-UTRAN stages, and the measurement of neighbor beams in NR systems is complex and costly, leading to high power consumption for terminals searching for optimal beam combinations.
Innovation Solution
Implementing a method to set up QoS based on flows instead of bearers, and defining an efficient procedure for measuring neighbor beams in NR systems, considering the differences in complexity and cost, to reduce power consumption and improve beam reselection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If QoS is set up based on bearers in LTE systems, then the network can manage QoS at bearer level, but multiple flows with the same QoS cannot be finely controlled
Solution Approach 1:
The patent segments QoS control from the bearer level to the flow level by introducing flow-based QoS setup. Instead of treating all flows in a bearer uniformly, the system now identifies and manages individual flows (e.g., by 5-tuple: source IP, destination IP, source port, destination port, protocol) within a bearer, enabling fine-grained QoS control for each flow while maintaining bearer-level management capabilities.
2Measurement precision
If all neighbor beams are measured in NR systems, then beam reselection accuracy is improved, but measurement complexity and power consumption increase
Solution Approach 1:
The patent applies partial action by measuring only a subset of neighbor beams rather than all possible beams. The system determines a measurement target beam set based on criteria such as beam direction, beam ID, or spatial filter information, and performs measurements only on beams that are likely to be relevant for the terminal's current location and movement pattern, thereby reducing power consumption while maintaining adequate beam reselection accuracy.
Solution Approach 2:
The patent implements preliminary action by pre-configuring beam information including beam directions, beam IDs, and spatial filter parameters before the actual beam reselection process. This allows the terminal to use pre-stored information to determine which neighbor beams need measurement, avoiding the need to measure all beams from scratch and reducing overall power consumption during beam reselection.
3Length of stationary object
If beamforming is used in 5G mmWave systems, then path loss is reduced and transfer distance is increased, but system complexity increases
Solution Approach 1:
The patent applies universality by implementing a unified beam management framework that handles multiple beam-related functions through a single set of mechanisms. The system uses common beam information structures, unified measurement procedures, and integrated beam reselection algorithms to manage both intra-frequency and inter-frequency beam reselection, as well as handling beam switching during handovers, thereby reducing overall system complexity despite the advanced beamforming capabilities.
Data Source
AI summary
The present disclosure relates to a communication technique of fusing a 5G communication system for supporting higher data transmission rate beyond a 4G system with an IoT technology and a system thereof. The present disclosure may be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety related service, or the like) based on the 5G communication technology and the IoT related technology. A communication method of a base station, the method comprising: establishing at least one bearer with a terminal; receiving a downlink packet being transmitted to the terminal; determining a bearer mapped to quality of service (QoS) information of the downlink packet; and transmitting, to the terminal, the downlink packet through the determined bearer.