mermaid test

Table 5.18.19-1: Switching scenarios and relevant guard symbols for

Case-1 timing mode

  -------------------------------------- --------------------------------------------- ----------

  Switching scenario                     Field for number of guard symbols in MAC CE   

  IAB-MT operation to IAB-DU operation   MT Rx to DU Tx                                NmbGS~1~

  MT Rx to DU Rx                         NmbGS~2~                                      

  MT Tx to DU Tx                         NmbGS~3~                                      

  MT Tx to DU Rx                         NmbGS~4~                                      

  IAB-DU operation to IAB-MT operation   DU Rx to MT Tx                                NmbGS~5~

  DU Rx to MT Rx                         NmbGS~6~                                      

  DU Tx to MT Tx                         NmbGS~7~                                      

  DU Tx to MT Rx                         NmbGS~8~                                      

  -------------------------------------- --------------------------------------------- ----------

For Case-6 and Case-7 timing modes, a separate value for the number of

guard symbols is specified for each of the following eight switching

scenarios (see Table 5.18.19-2):

Table 5.18.19-2: Switching scenarios and relevant guard symbols for

Case-6 and Case-7 timing modes

  -------------------------------------- --------------------------------------------- -----------

  Switching scenario                     Field for number of guard symbols in MAC CE   

  IAB-MT operation to IAB-DU operation   MT Tx (Case-6) to DU Tx (Case-1)              NmbGS~9~

  MT Tx (Case-6) to DU Rx (Case-1)       NmbGS~10~                                     

  MT Tx (Case-7) to DU Tx (Case-1)       NmbGS~11~                                     

  MT Tx (Case-7) to DU Rx (Case-1)       NmbGS~12~                                     

  IAB-DU operation to IAB-MT operation   DU Tx (Case-1) to MT Tx (Case-6)              NmbGS~13~

  DU Rx (Case-1) to MT Tx (Case-6)       NmbGS~14~                                     

  DU Tx (Case-1) to MT Tx (Case-7)       NmbGS~15~                                     

  DU Rx (Case-1) to MT Tx (Case-7)       NmbGS~16~                                     

  -------------------------------------- --------------------------------------------- -----------

### 6.1.2 MAC PDU (DL-SCH and UL-SCH except transparent MAC and Random Access Responses)

A MAC PDU consists of one or more MAC subPDUs. Each MAC subPDU consists of one of the following:

- A MAC subheader only (including padding);

- A MAC subheader and a MAC SDU;

- A MAC subheader and a MAC CE;

- A MAC subheader and padding.

The MAC SDUs are of variable sizes.

Each MAC subheader corresponds to either a MAC SDU, a MAC CE, or padding.

A MAC subheader except for fixed sized MAC CE, padding, and a MAC SDU containing UL CCCH consists of the header fields R/F/LCID/(eLCID)/L. A MAC subheader for fixed sized MAC CE and padding consists of the header fields R/LCID/(eLCID). A MAC subheader for a MAC SDU containing UL CCCH consists of the header fields (LX)/R/LCID.

```mermaid

---

title: "Figure 6.1.2-1: R/F/LCID/(eLCID)/L MAC subheader with 8-bit L field"

config:

  packet:

    bitsPerRow: 8

---

packet-beta

0-0: "R"

1-1: "F"

2-7: "LCID"

8-15: "L"

```

```mermaid

---

title: "Figure 6.1.2-1: R/F/LCID/(eLCID)/L MAC subheader with 8-bit L field"

config:

  packet:

    bitsPerRow: 8

---

packet-beta

0-0: "R"

1-1: "F"

2-7: "LCID"

8-15: "eLCID"

16-23: "L"

```

Notes:

- For whatrever reason mermaid cuts the caption

- No way to add multiple variants of the same figure, need to add multiple figures instead (shouldn't be a big deal)

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