name: TSCAI
full_form: Traffic Steering, Coordination and Information
context: If the NG-RAN receives a TSCAI containing a BAT Window or the Capability for BAT adaptation for a QoS Flow, the NG-RAN can determine a BAT offset in order to align the arrival of the traffic bursts with the next expected transmission opportunity over the air interface in each direction (i.e. DL or UL). The BAT offset can take a positive or a negative values. If the NG-RAN receives a TSCAI containing a Periodicity Range for a QoS Flow, the NG-RAN can determine an adjusted Periodicity along with above specified BAT offset, in order to align the periodicity of the traffic bursts with the expected time interval between subsequent transmission opportunities over the air interface in each direction (i.e. DL or UL). If the TSCAI contained a value range, the adjusted Periodicity should be any value between the lower bound and upper bound. If the TSCAI contained a list of Periodicity value(s), the adjusted Periodicity should be one of these values. NG-RAN may support the following feedback mechanisms: - Proactive RAN feedback for adaptation of Burst Arrival Time and Periodicity: NG-RAN may provide a Burst Arrival Time offset and an adjusted Periodicity as part of QoS flow establishment or modification as illustrated in clause 5.27.2.5.2; - Reactive RAN feedback for Burst Arrival Time adaptation: NG-RAN may provide a Burst Arrival Time offset after QoS flow establishment as illustrated in clause 5.27.2.5.3.
description: Traffic Steering, Coordination and Information (TSCAI) is a message used for coordinating traffic steering and providing information necessary for optimizing the transmission of data bursts over the air interface in both downlink (DL) and uplink (UL) directions. It contains parameters such as Burst Arrival Time (BAT) Window or Capability for BAT adaptation, Periodicity Range for QoS Flows, which enable the NG-RAN to adjust the timing and periodicity of traffic bursts to align with expected transmission opportunities.
explanation: TSCAI is classified as a Message because it is used for exchanging specific information between network components (in this case, between the NG-RAN and other parts of the 5G system) to facilitate coordinated actions such as adjusting burst arrival times and periodicity. This aligns with the context provided from 3GPP TS 23.501, which describes TSCAI's role in optimizing traffic transmission over the air interface.
section_title: 5.27.2.5.1 Overview
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biotag_Description: B-Message,I-Message,I-Message,I-Message,I-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,B-Parameter,O,O,O,O,B-Measurement,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O