G.1 Application of error labels

04.603GPPGeneral Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 1999TS

An RLC/MAC control message description could have an error label included, as shown in the examples below.

< Packet XXX message content > ::=

< FIELD_1 : bit (3) >

< FIELD_2 : bit (16) >

< padding bits >

! < Ignore : bit (*) = < no string > > ;

In the case of a complete message, the contents of the received syntactically incorrect message can be ignored.

Or

< PRECEDING_FIELD : bit (3) >

{ 00 < FIELD_1 : bit (10) >

| 01 < FIELD_2 : bit (10) >

! < Ignore : bit (2+10) = < no string > > }

< FOLLOWING_FIELD : bit (8) >

The syntactically incorrect description within the { } brackets can be ignored, the correctly received descriptions preceding and following the { } brackets shall be accepted.

Or

< Structure 1 struct > ::=

< FIELD_1: bit (3) >

{ 1 < FIELD_2 : bit (8) > } ** 0

! < Ignore : bit (*) = < no string > > ;

The above description indicates that the syntactically incorrect structure can be ignored. (Note: When this structure is included in the description of a message, any description following the structure must allow truncation.)