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.)