Pre-grant Assistance for Multi-Connectivity Data Processing
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Solution Overview
Problem
In multi-connectivity scenarios, user equipment (UE) faces challenges in pre-processing packet data convergence protocol (PDCP) data units into radio link control (RLC) data units due to varying bitrate and resource availability, leading to potential misallocation of data units across network legs and increased power consumption.
Innovation Solution
A method is provided where network nodes offer pre-grant assistance information to UE, indicating the intended data transfer per leg, allowing the UE to accurately preprocess higher layer protocol data units into lower layer units based on this information, reducing processing needs and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE pre-processes PDCP data units into RLC data units in advance, then data transmission readiness is improved, but power consumption increases
Solution Approach 1:
The network node provides pre-grant assistance information to the UE in advance, enabling the UE to perform preliminary processing of PDCP data units into RLC data units based on predicted grant amounts. This allows the UE to prepare data for future transmissions without continuously processing all data, thus improving transmission readiness while controlling power consumption by processing only what is likely to be needed.
2Productivity
If the UE pre-creates RLC PDUs for multiple legs, then data availability for transmission is improved, but the likelihood of misallocation increases
Solution Approach 1:
The network node monitors actual grant amounts and feedback from the UE regarding data processing status. This feedback mechanism allows the network to adjust pre-grant assistance information for future occasions, improving the accuracy of data unit allocation predictions. The network can correct misallocations by learning from actual transmission patterns and adjusting predictions accordingly.
3Use of energy by moving object
If the UE processes data units without pre-grant information, then power consumption is reduced, but transmission response time increases
Solution Approach 1:
The network node provides pre-grant assistance information to the UE in advance, enabling the UE to perform preliminary processing of PDCP data units into RLC data units based on predicted grant amounts. This allows the UE to prepare data for future transmissions without continuously processing all data, thus improving transmission readiness while controlling power consumption by processing only what is likely to be needed.
4Productivity
If the UE increases pre-processing capacity, then data transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The network node provides pre-grant assistance information that enables the UE to autonomously determine the optimal amount of data to pre-process based on predicted grant amounts. The UE uses this information to self-manage its processing capacity, avoiding the need for complex centralized control mechanisms while improving transmission efficiency through intelligent, autonomous resource management.
Data Source
AI summary
A method performed by a network node for providing pre-grant assistance for a communication device having multi connectivity over two or more legs to two or more network nodes of a communications network is provided. The method includes determining a pre-grant assistance information for the communication device based on at least one of (i) a status of a radio resource management function and any other pre-grant assistance information sent by the network node to other communication devices connected to the network node and (ii) information received from other network nodes. The pre-grant assistance information includes a value for a future grant to the communication device per leg of the two or more legs. The method further includes transmitting to the communication device an indication including the pre-grant assistance information per leg of the two or more legs.