From 4de950d3110a53e3411dd629fa0d16f39493621d Mon Sep 17 00:00:00 2001 From: GuoYinghao Date: Thu, 20 Mar 2025 07:58:42 +0000 Subject: [PATCH 1/2] Update file 05.02 System Information.md --- .../05_Idle_and_Inactive_Mode/05.02 System Information.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/specification/stage-3/05_Idle_and_Inactive_Mode/05.02 System Information.md b/specification/stage-3/05_Idle_and_Inactive_Mode/05.02 System Information.md index 35b0f83..4f0ec26 100644 --- a/specification/stage-3/05_Idle_and_Inactive_Mode/05.02 System Information.md +++ b/specification/stage-3/05_Idle_and_Inactive_Mode/05.02 System Information.md @@ -16,10 +16,13 @@ System Information (SI) is divided into the *MIB* and a number of SIBs and posSI - For a UE in RRC_CONNECTED, the network can provide system information through dedicated signalling using the *RRCReconfiguration* message, e.g. if the UE has an active BWP with no common search space configured to monitor system information, paging, or upon request from the UE. +**NOTE** For RRC_CONNECTED, the UE can also request the *SIB*/*posSIB* by dedicated RRC signaling *dedicatedSIBRequest* + - For PSCell and SCells, the network provides the required SI by dedicated signalling, i.e. within an *RRCReconfiguration* message. Nevertheless, the UE shall acquire *MIB* of the PSCell to get SFN timing of the SCG (which may be different from MCG). Upon change of relevant SI for SCell, the network releases and adds the concerned SCell. For PSCell, the required SI can only be changed with Reconfiguration with Sync. **NOTE** 2: The physical layer imposes a limit to the maximum size a SIB can take. The maximum *SIB1* or *SI message* size is 2976 bits. + ### 5.2.2 System information acquisition #### 5.2.2.1 General UE requirements -- GitLab From b06e5f8d043a6f07b942c947ac768600bcbf03eb Mon Sep 17 00:00:00 2001 From: GuoYinghao Date: Thu, 20 Mar 2025 08:03:39 +0000 Subject: [PATCH 2/2] added a note for posSIB validity --- .../05_Idle_and_Inactive_Mode/05.02 System Information.md | 1 + 1 file changed, 1 insertion(+) diff --git a/specification/stage-3/05_Idle_and_Inactive_Mode/05.02 System Information.md b/specification/stage-3/05_Idle_and_Inactive_Mode/05.02 System Information.md index 4f0ec26..6a0f475 100644 --- a/specification/stage-3/05_Idle_and_Inactive_Mode/05.02 System Information.md +++ b/specification/stage-3/05_Idle_and_Inactive_Mode/05.02 System Information.md @@ -38,6 +38,7 @@ The UE in RRC_IDLE and RRC_INACTIVE shall ensure having a valid version of (at l The UE capable of MBS broadcast and is receiving or interested to receive MBS broadcast service(s) via a broadcast MRB shall ensure having a valid version of *SIB20*, regardless of the RRC state the UE is in. The UE shall ensure having a valid version of the posSIB requested by upper layers. +*NOTE* this is introduced for positioning discussion #### 5.2.2.2 SIB validity and need to (re)-acquire SIB -- GitLab