Common Group-SRB for RRM Signaling Overhead Reduction
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Solution Overview
Problem
Current radio resource management (RRM) systems face inefficiencies due to repeated transmission of control signaling for grouped UEs on proprietary SRBs, leading to additional signaling overhead.
Innovation Solution
Establishing a common Group-SRB for multiple UEs in an RRC connected state, allowing configuration and control information to be sent on a single channel, with a selected master UE acting as an auxiliary control node for group control, reducing redundant transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control signaling is transmitted separately on proprietary SRBs for each UE in a group, then individual UE control requirements are met, but signaling overhead increases due to repeated transmission of identical control data
Solution Approach 1:
The patent merges control signaling for multiple UEs into a single common Group-SRB. The base station transmits control information once on the common Group-SRB instead of separately on individual proprietary SRBs for each UE, thereby reducing redundant transmissions while ensuring all UEs in the group receive the same control data reliably
Solution Approach 2:
The common Group-SRB is designed to serve multiple UEs simultaneously with the same control information. This universal channel performs the function of multiple individual SRBs, allowing a single transmission to reach and control multiple UEs that share common control requirements
2Loss of energy
If a common Group-SRB is established for multiple UEs, then signaling overhead is reduced, but device complexity increases due to group management requirements
Solution Approach 1:
The patent segments UEs into groups based on common control requirements, allowing the base station to manage control signaling in manageable units. Each group is assigned a common Group-SRB, and the base station maintains group membership information to determine which UEs receive which common control information
Solution Approach 2:
The common Group-SRB acts as an intermediary channel between the base station and multiple UEs. It mediates the control information delivery process by receiving control data from the base station and distributing it to all UEs in the group, simplifying the base station's direct management of individual UE connections
3Measurement precision
If control information is transmitted on dedicated SRBs for each terminal, then individual terminal control precision is ensured, but the burden on proprietary SRBs increases
Solution Approach 1:
The patent combines control information delivery for multiple UEs into a single common Group-SRB transmission, eliminating the need to burden multiple proprietary SRBs with identical control data. This reduces the overall load on the SRB system while maintaining precise control delivery to all UEs in the group
Data Source
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AI summary
The present invention provides a method and apparatus for controlling RRM. The method includes: an base station establishes a UE group for multiple terminals in an RRC connected state; the base station establishes a common Group-SRB for the UE group; the base station sends configuration information to the multiple terminals in downlink transmission on multiple dedicated SRBs for respective terminals in the UE group, where the configuration information includes the configuration information for establishing the common Group-SRB; and the base station sends common control information of the UE group in downlink transmission on the common Group-SRB. The present invention solves the problem in which the control signaling for grouped UEs has same purpose and content while the control data is repeatedly transmitted on each proprietary SRB, leading to additional signaling overhead. By using common SRB and taking advantages of characteristics of grouped UEs, a single copy of control data can be transmitted for controlling multiple UEs.