|
Media access control |
||||
|
Field no. |
Value (dec) |
Size |
Function |
Content |
|
1 |
000 |
1 |
Type |
|
|
2 |
0 to |
2 |
Length |
8: Total size in bytes, fixed at 8 bytes |
|
3 |
0-255 |
1 |
Media Access priority level |
Reserved for future use. Always 0 |
|
4 |
0-511 |
2 |
Random access selection interval |
The random access scheme selection interval in hexslots. 0 – Default selection interval applies |
|
5 |
0-127 |
1 |
Short data message limit |
Maximum allowed number of short data message transmissions on the RAC during a frame |
|
6 |
0-255 |
1 |
System status |
0: Normal 10: Busy 20: Temporarily out of service 30: Scheduled out of service |
Note:
Provides methods for granting data transfer access.
When a mobile station receives a MAC message, this message takes preference over the BB message parameters and the mobile station should apply the random access selection interval for a duration selected randomly between 4 and 8 minutes. After the expiry of the duration, the random access selection interval should revert back to the parameters specified by the BB.
If the random access selection interval is set to 0, then the BB random access selection interval applies.