dk.navicon.AIS
Class DataLinkManagementMessage

java.lang.Object
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  +--dk.navicon.AIS.AISMessage
        |
        +--dk.navicon.AIS.DataLinkManagementMessage

public class DataLinkManagementMessage

extends AISMessage

This message shall be used by base station(s) to pre-announce the fixed allocation schedule (FATDMA) for one or more base station(s) and it shall be repeated as often as required. This way the system can provide a high level of throughput for base station(s). This is especially important in regions where several base stations are located adjacent to each other and mobile station(s) move between these different regions.

Field Summary

int	increment_1 Increment to repeat reservation block 1
int	increment_2 Increment to repeat reservation block 2 (optional)
int	increment_3 Increment to repeat reservation block 3 (optional)
int	increment_4 Increment to repeat reservation block 4 (optional)
int	mmsi_nb MMSI number of base station
int	nb_slots_1 Number of reserved consecutive slots: 1 - 15
int	nb_slots_2 Number of reserved consecutive slots: 1 - 15; optional
int	nb_slots_3 Number of reserved consecutive slots: 1 - 15; optional
int	nb_slots_4 Number of reserved consecutive slots: 1 - 15; optional
int	offset_nb_1 Reserved slot offset number; 0 = not available
int	offset_nb_2 Reserved slot offset number (Optional)
int	offset_nb_3 Reserved slot offset number (optional)
int	offset_nb_4 Reserved slot offset number (optional)
int	spare Not used.
int	spare_1 Not used.
int	timeout_1 Time out value in minutes
int	timeout_2 Time out value in minutes (optional)
int	timeout_3 Time out value in minutes (optional)
int	timeout_4 Time out value in minutes (optional)

Fields inherited from class dk.navicon.AIS.AISMessage

msg_id, rep_indi

Constructor Summary

DataLinkManagementMessage()

DataLinkManagementMessage(java.lang.String s, int fill_bits)

Method Summary

dk.navicon.AIS.MessageDescription[]

getMessageDescription()

Methods inherited from class dk.navicon.AIS.AISMessage

decode, encode

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mmsi_nb

public int mmsi_nb

MMSI number of base station

spare

public int spare

Not used. Shall be set to zero

offset_nb_1

public int offset_nb_1

Reserved slot offset number; 0 = not available

nb_slots_1

public int nb_slots_1

Number of reserved consecutive slots: 1 - 15

timeout_1

public int timeout_1

Time out value in minutes

increment_1

public int increment_1

Increment to repeat reservation block 1

offset_nb_2

public int offset_nb_2

Reserved slot offset number (Optional)

nb_slots_2

public int nb_slots_2

Number of reserved consecutive slots: 1 - 15; optional

timeout_2

public int timeout_2

Time out value in minutes (optional)

increment_2

public int increment_2

Increment to repeat reservation block 2 (optional)

offset_nb_3

public int offset_nb_3

Reserved slot offset number (optional)

nb_slots_3

public int nb_slots_3

Number of reserved consecutive slots: 1 - 15; optional

timeout_3

public int timeout_3

Time out value in minutes (optional)

increment_3

public int increment_3

Increment to repeat reservation block 3 (optional)

offset_nb_4

public int offset_nb_4

Reserved slot offset number (optional)

nb_slots_4

public int nb_slots_4

Number of reserved consecutive slots: 1 - 15; optional

timeout_4

public int timeout_4

Time out value in minutes (optional)

increment_4

public int increment_4

Increment to repeat reservation block 4 (optional)

spare_1

public int spare_1

Not used. Shall be set to zero

Constructor Detail

DataLinkManagementMessage

public DataLinkManagementMessage()

DataLinkManagementMessage

public DataLinkManagementMessage(java.lang.String s,
                                 int fill_bits)
                          throws AISParseException

Method Detail

getMessageDescription

public dk.navicon.AIS.MessageDescription[] getMessageDescription()

Overrides:

getMessageDescription in class AISMessage