14.1.3 Intra-frequency reporting events for TDD
25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS
14.1.3.1 Reporting event 1G: Change of best cell (TDD)
When an intra-frequency measurement configuring event 1g is set up, the UE shall
1> create a variable TRIGGERED_1G_EVENT related to that measurement, which shall initially be empty.
1> store the P-CCPCH of the serving cell in the variable TRIGGERED_1G_EVENT as the best cell .
1> delete this variable when the measurement is released.
When event 1G is configured in the UE, the UE shall:
1> if the equation 1 is fulfilled for one or more P-CCPCHs during the time "Time to trigger"
2> if those P-CCPCHs are not included in the "primary CCPCH info" in the variable TRIGGERED_1G_EVENT:
3> include those P-CCPCHs in "cells triggered" in the variable TRIGGERED_1G_EVENT;
2> update the prebest cell to the best P-CCPCH and for each cell in the variable TRIGGERED_1G_EVENT:
3> if Equation 2 below is fulfilled for a primary CCPCH:
4> remove the entry of that primary CCPCH from "cells triggered" in the variable TRIGGERED_1G_EVENT;
2> send a measurement report with IEs set as below:
3> set in "intra-frequency measurement event results": "Intrafrequency event identity" to "1g";
3> set the first entry in "cell measurement event results" to the "Cell parameters ID" of the P-CCPCH which was stored in the variable TRIGGERED_1G_EVENT;
3> include all entries in "cells triggered" in variable TRIGGERED_1G_EVENT in "cell measurement event results" in the measurement report in descending order according to:
where M is the P-CCPCH RSCP and O the individual offset of a cell;
3> set the IE "measured results" and the IE "additional measured results" according to subclause 8.4.2, not taking into account the cell individual offset for each cell.
1> if Equation 2 below is fulfilled for a primary CCPCH:
2> if a primary CCPCH is included in the "cells triggered" in the variable TRIGGERED_1G_EVENT:
3> remove the entry of that primary CCPCH from "cells triggered" in the variable TRIGGERED_1G_EVENT;
The UE shall use the equations below for evaluation of reporting event 1g:
Equation 1
The variables in the formula are defined as follows:
Mprevious_best is the current P-CCPCH RSCP of the previous best cell expressed in mW
Oprevious_best is the cell individual offset of the previous best cell
Mi is the current P-CCPCH RSCP of the currently evaluated cell i expressed in mW
Oi is the cell individual offset of the currently evaluated cell i
H1g is the hysteresis parameter for the event 1g.
Equation 2
The variables in the formula are defined as follows:
Mprevious_best is the current P-CCPCH RSCP of the previous best cell expressed in mW
Oprevious_best is the cell individual offset of the previous best cell
Mi is the current P-CCPCH RSCP of the currently evaluated cell i expressed in mW
Oi is the cell individual offset of the currently evaluated cell i
H1g is the hysteresis parameter for the event 1g.
Figure 14.1.3.1-1: A P-CCPCH RSCP becomes better than the previous best P-CCPCH RSCP
14.1.3.2 Reporting event 1H: Timeslot ISCP below a certain threshold (TDD)
When an intra-frequency measurement configuring event 1h is set up, the UE shall:
1> create a variable TRIGGERED_1H_EVENT related to that measurement, which shall initially be empty;
1> delete this variable when the measurement is released.
When event 1h is configured in the UE, the UE shall:
1> if equation 1 is fulfilled for a time period indicated by "Time to trigger" and if that P-CCPCH is not included in the IE "cells triggered" in the variable TRIGGERED_1H_EVENT:
2> include that P-CCPCH in the IE "cells triggered" in the variable TRIGGERED_1H_EVENT;
2> send a measurement report with the IEs set as below:
3> set in "intra-frequency measurement event results": "Intrafrequency event identity" to "1h" and in "cell measurement event results" the "Cell parameters ID" of the P-CCPCH that triggered the report;
3> include in "Cell measured results" the "Timeslot ISCP" of those cells that are included in the variable TRIGGERED_1H_EVENT and "additional measured results" according to subclause 8.4.2, not taking into account the cell individual offset for each cell.
1> if Equation 2 below is fulfilled for a primary CCPCH:
2> if a primary CCPCH is included in the "cells triggered" in the variable TRIGGERED_1H_EVENT:
3> remove the entry of that primary CCPCH from "cells triggered" in the variable TRIGGERED_1H_EVENT.
The UE shall use the equations below for evaluation of reporting event 1h:
Equation 1
Equation 2
The variables in the formula are defined as follows:
Mi is the Timeslot ISCP of the currently evaluated cell i expressed in mW
Oi is the cell individual offset of the currently evaluated cell i
T1h is the Threshold for event 1h
H1h is the hysteresis parameter for the event 1h.
Before any evaluation is done, the Timeslot ISCP expressed in mW is filtered according to subclause 8.6.7.2.
Figure 14.1.3.2-1: An ISCP value of a timeslot drops below an absolute threshold
14.1.3.3 Reporting event 1I: Timeslot ISCP above a certain threshold (TDD)
When an intra-frequency measurement configuring event 1i is set up, the UE shall:
1> create a variable TRIGGERED_1I_EVENT related to that measurement, which shall initially be empty;
1> delete this variable when the measurement is released.
When event 1i is configured in the UE, the UE shall:
1> if equation 1 is fulfilled for a time period indicated by "Time to trigger" and if that P-CCPCH is not included in the IE "cells triggered" in the variable TRIGGERED_1I_EVENT:
2> include that P-CCPCH in the IE "cells triggered" in the variable TRIGGERED_1I_EVENT;
2> send a measurement report with the IEs set as below:
3> set in "intra-frequency measurement event results": "Intrafrequency event identity" to "1i" and in "cell measurement event results" to the "Cell parameters ID" of the P-CCPCH that triggered the report;
3> include in "measured results" the "Timeslot ISCP" of those cells that are included in the variable TRIGGERED_1I_EVENT and "additional measured results" according to 8.4.2, not taking into account the cell individual offset for each cell.
1> if Equation 2 below is fulfilled for a primary CCPCH:
2> if a primary CCPCH is included in the "cells triggered" in the variable TRIGGERED_1I_EVENT:
3> remove the entry of that primary CCPCH from "cells triggered" in the variable TRIGGERED_1I_EVENT.
The UE shall use the equation below for evaluation of reporting event 1i:
Equation 1
Equation 2
The variables in the formula are defined as follows:
Mi is the Timeslot ISCP of the currently evaluated cell i expressed in mW
Oi is the cell individual offset of the currently evaluated cell i
T1i is the Threshold for event 1i
H1i is the hysteresis parameter for the event 1i.
Before any evaluation is done, the Timeslot ISCP expressed in mW is filtered according to subclause 8.6.7.2.
Figure 14.1.3.3-1: An ISCP value of a timeslot exceeds a certain threshold