Merge branch 'initial-files' into 'main'

## 6.1 Connection Control

### 6.1.1 Connection Setup

#### 6.1.1.1 General

![Figure 5.3.3.1-1: RRC connection setup, successful](./figures/xx.01.01-01%20Connection%20Setup%20-%20success.svg)

[Figure 5.3.3.1-1]: <./figures/xx.01.01-01%20Connection%20Setup%20-%20success.msc> "Figure 5.3.3.1-1: RRC connection setup, successful"

[Figure 5.3.3.1-1: RRC connection setup, successful][Figure 5.3.3.1-1]

![Figure 5.3.3.1-2: RRC connection setup, network reject](./figures/xx.01.01-02%20Connection%20Setup%20-%20failure.svg)

[Figure 5.3.3.1-2]: <./figures/xx.01.01-02%20Connection%20Setup%20-%20failure.svg> "Figure 5.3.3.1-2: RRC connection setup, network reject"

[Figure 5.3.3.1-2: RRC connection setup, network reject][Figure 5.3.3.1-2]

The purpose of this procedure is to establish an RRC connection between the UE and the RAN.

#### 6.1.1.2 Initiation

The UE initiates the procedure when upper layers request establishment of an RRC connection while the UE is in RRC_IDLE and it has acquired essential system information.

The UE shall ensure having valid and up to date essential system information as specified in clause 5.2.2.2 before initiating this procedure.

Upon initiation of the procedure, the UE shall:

- perform the unified access control procedure as specified in 5.3.14 using the Access Category and Access Identities provided by upper layers;

  - if the access attempt is barred, the procedure ends;

- apply the Uu configuration according to [SIB1](../05%20Idle%20and%20Inactive%20Mode/asn1/Uu-6G-SystemInformation.asn) or, for parameters not configured therein, the default configuration according to the respective clauses of the specification,

- start timer T300,

- prepare and transmit the [ConnectionSetupRequest](./asn1/Uu-6G-ConnectionControl.asn) message in accordance with the its ASN.1 definition.

hscale="auto";

defstyle hgap [text.gap.left=20, text.gap.right=20];

defstyle entity [text.font.face="Arial", text.size.normal=14, text.wrap=no, text.bold=yes];

defstyle b2 [text.font.face="Arial", text.size.normal=13, vspacing=7, text.wrap=no, hgap];

defstyle ac [text.font.face="Times", text.size.normal=15, text.italic=yes, vspacing=5, arrow.type=sharp, hgap];

defstyle au [text.font.face="Arial", text.size.normal=13, vspacing=5, hgap];

defstyle n1 [text.font.face="Arial", text.size.normal=13, vspacing=5, weak, text.italic=no, hgap];

u: UE;

n: Network;

|||;

u->n: ConnectionSetupRequest [ac];

u<-n: ConnectionSetup [ac];

u->n: ConnectionSetupComplete [ac];

|||;

hscale="auto";

defstyle hgap [text.gap.left=20, text.gap.right=20];

defstyle entity [text.font.face="Arial", text.size.normal=14, text.wrap=no, text.bold=yes];

defstyle b2 [text.font.face="Arial", text.size.normal=13, vspacing=7, text.wrap=no, hgap];

defstyle ac [text.font.face="Times", text.size.normal=15, text.italic=yes, vspacing=5, arrow.type=sharp, hgap];

defstyle au [text.font.face="Arial", text.size.normal=13, vspacing=5, hgap];

defstyle n1 [text.font.face="Arial", text.size.normal=13, vspacing=5, weak, text.italic=no, hgap];

u: UE;

n: Network;

|||;

u->n: ConnectionSetupRequest [ac];

u<-n: ConnectionFailure [ac];

|||;