9.1.63 EC PAGING REQUEST

3GPP44.018GSM/EDGE Radio Resource Control (RRC) protocolMobile radio interface Layer 3 specificationRelease 16TS

This message is sent on the EC-CCCH by the network and may identify up to two mobile stations. It may be sent to a mobile station in packet idle mode to transfer MM information (i.e. trigger of cell update procedure). The mobile stations are identified by their P-TMSI or IMSI.

Message type: EC PAGING REQUEST

Significance: dual

Direction: network to mobile station

Table 9.1.63.1: EC PAGING REQUEST message content

< EC Paging Request message content > ::=

< Message Type : bit (4) >

< Used DL Coverage Class: bit (2) >

{ 0 | 1 < EC Page Extension ; bit (4) > }

< Mobile Identity 1 : < Mobile Identity struct >>

{ 0 | 1 < Mobile Identity 2 : < Mobile Identity struct >> }

{ null | L — Receiver compatible with earlier release

| H — Additions in Release 14

< Positioning Event Pending Indicator : bit (2) >

< Enhanced Coverage Restriction Indicator : bit (2) >

}

<spare padding> ;

< Mobile Identity struct > ::=

{ 0 < P-TMSI : bit (32) >

| 1 < Number of IMSI Digits : bit (4) >

< IMSI Digits : bit (4 * (val(Number of IMSI Digits) + 1)) > } ;

Table 9.1.63.2: EC PAGING REQUEST message details

Message Type (4 bit field)

This field indicates the type of message sent on the EC-CCCH (see Table 10.4.4)

Used DL Coverage Class (2 bit field)

This field is coded as described in sub-clause 9.1.60.

EC Page Extension (4 bit field)

This field is coded as described in sub-clause 9.1.60.

P-TMSI field (32 bit field)

This field identifies the P-TMSI assigned to the mobile station using NAS signalling. It is coded as the value part of the TMSI/P-TMSI IE as described in sub-clause 10.5.2.42.

Number of IMSI Digits (4 bit field)

This field identifies the number of digits in the IMSI. This field is coded as follows:

Bit

4 3 2 1

0 0 0 0 1 digit

0 0 0 1 2 digits

0 0 1 0 3 digits

.

.

.

1 1 1 1 16 digits

IMSI Digits

This field is coded as a set of N digits where N = val(Number of IMSI Digits + 1) where the first instance of IMSI Digits corresponds to "Identity digit 1" of Figure 10.5.4/3GPP TS 24.008, the second instance of IMSI Digits corresponds to "Identity digit 2" of Figure 10.5.4/3GPP TS 24.008 and so on.

Positioning Event Pending Indicator (2 bit field)

This field is a 2 bit bitmap indicating whether or not a paging request is sent due to a pending positioning event for the MS identified by the Mobile Identity 1 and Mobile Identity 2 fields.

Bit

2 1

x 0 Page not sent for Mobile Identity 1 due to a pending positioning event
x 1 Page sent for Mobile Identity 1 due to a pending positioning event

0 x Page not sent for Mobile Identity 2 due to a pending positioning event
1 x Page sent for Mobile Identity 2 due to a pending positioning event

Enhanced Coverage Restriction Indicator (2 bit field)

This field is a 2 bit bitmap indicating whether or not the use of enhanced coverage is restricted for the MS identified by the Mobile Identity 1 and Mobile Identity 2 fields.

Bit

2 1

x 0 Restricted use of enhanced coverage for Mobile Identity 1
x 1 No restriction on use of enhanced coverage for Mobile Identity 1

0 x Restricted use of enhanced coverage for Mobile Identity 2
1 x No restriction on use of enhanced coverage for Mobile Identity 2