UL Feedback Control for MBS Data in 5G NR
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Solution Overview
Problem
Current wireless communication systems, particularly the 5G NR system, face challenges in improving uplink (UL) feedback efficiency when receiving Multicast Broadcast Service (MBS) data, which is essential for ensuring reliable and efficient network performance.
Innovation Solution
A wireless communication method and user equipment (UE) that enables UL feedback transmission upon receiving MBS data, with specific conditions such as receiving an indication for feedback and an available UL resource, allowing for efficient and controlled feedback mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UL feedback transmission is always enabled for MBS data, then feedback reliability is improved, but network overhead and resource consumption increase
Solution Approach 1:
The patent implements dynamic UL feedback transmission by introducing multiple predetermined conditions (data type matching, QoS parameter matching, service continuity requirements) that must be satisfied for feedback to be transmitted. This dynamic control mechanism enables the system to adaptively determine whether feedback transmission is necessary based on real-time service requirements, thereby improving feedback reliability when needed while reducing unnecessary network overhead when not required.
Solution Approach 2:
The patent changes the parameters governing feedback transmission by introducing conditional logic based on data type, QoS parameters, and service continuity requirements. Instead of a fixed feedback transmission mode, the system evaluates multiple parameters (data type indicators, QoS flow identifiers, service continuity flags) to dynamically adjust feedback transmission behavior, resolving the contradiction between reliability and overhead.
2Loss of information
If UL feedback is transmitted for all MBS data, then network performance monitoring is improved, but uplink resource consumption increases
Solution Approach 1:
The patent applies partial action by transmitting UL feedback only for specific MBS data that satisfies predetermined conditions (matching data type, QoS parameters, or service continuity requirements) rather than for all MBS data. This selective feedback transmission maintains adequate performance monitoring accuracy for critical services while significantly reducing uplink resource consumption by excluding unnecessary feedback transmissions.
3Productivity
If conditional feedback transmission is implemented, then resource efficiency is improved, but system complexity increases
Solution Approach 1:
The patent reduces system complexity by performing preliminary actions: the network pre-configures multiple predetermined conditions (data type filters, QoS parameter thresholds, service continuity requirements) before MBS data transmission begins. The UE then simply evaluates incoming data against these pre-established conditions rather than performing complex real-time analysis, thereby maintaining high resource efficiency while minimizing the computational burden and system complexity.
Data Source
AI summary
A wireless communication method performed by a User Equipment (UE) for providing uplink (UL) feedback in response to receiving data corresponding to a Multicast Broadcast Service (MBS) is presented. The wireless communication method includes receiving the data corresponding to the MBS; and enabling a transmission of the UL feedback in response to receiving the data corresponding to the MBS if at least one of a plurality of predetermined conditions is satisfied. The plurality of predetermined conditions includes receiving an indication to enable the UL feedback in response to receiving the data corresponding to the MBS and receiving an indication of a UL resource for transmitting the UL feedback.