11.2.23 Packet System Information Type 5

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

This optional message is sent by the network on the PBCCH giving information for measurement reporting and network controlled cell reselection. This message shall not be segmented across more than one RLC/MAC control block by using the procedures specified in sub-clause 9.1.12a. If not all information fits into one message, the remaining information will be sent in other instances of the PSI5 message. The message is sent on PBCCH only if so indicated in PSI1.

Message type: PACKET SYSTEM INFORMATION TYPE 5

Direction: network to mobile station

Classification: distribution message

Table 11.2.23.1: PSI5 information elements

< PSI5 message content > ::=

< PAGE_MODE : bit (2) >

< PSI5_CHANGE_MARK : bit (2) >

< PSI5_INDEX : bit (3) >

< PSI5_COUNT : bit (3) >

{ 0 | 1 < NC Measurement Parameters : < NC Measurement Parameters struct > > }

{ 0 | 1 < EXT Measurement Parameters : < EXT Measurement Parameters struct > > }

{ null | 0 bit** = <no string> — Receiver backward compatible with earlier version

| 1 — Additional contents for Release ’99
{ 0 | 1 < ENH Reporting Parameters : < ENH Reporting Parameters struct >> }
< padding bits > }

! < Distribution part error : bit (*) = < no string > > ;

< NC Measurement Parameters struct > ::=

< NETWORK_CONTROL_ORDER : bit (2) >

{ 0 | 1 < NC_ NON_DRX_PERIOD : bit (3) >

< NC_REPORTING_PERIOD_I : bit (3) >

< NC_REPORTING_PERIOD_T : bit (3) > } ;

< EXT Measurement Parameters struct >::=

{ < EXT_MEASUREMENT_ORDER : bit (2) == 00 >

| < EXT_MEASUREMENT_ORDER : bit (2) == 01 > < EM1 struct >

| < EXT_MEASUREMENT_ORDER : bit (2) == 10 >

| < EXT_MEASUREMENT_ORDER : bit (2) == 11 > } ;

< EM1 struct > ::=

{ 0 | 1 { < EXT_REPORTING_TYPE: bit (2) == 00 >

| < EXT_REPORTING_TYPE: bit (2) == 01 > < NCC_PERMITTED : bit (8) >

| < EXT_REPORTING_TYPE: bit (2) == 10 > { 0 | 1 < INT_FREQUENCY : bit (5) > }

| < EXT_REPORTING_TYPE: bit (2) == 11 > } }

{ 0 | 1 < EXT_REPORTING_PERIOD : bit (3) >}

{ < EXT_FREQUENCY_LIST : < EXT Frequency list description struct > > } ;

< EXT Frequency List Description struct > ::=

< EXT Frequency List struct > { 1 < EXT Frequency List struct > } ** 0 ;

< EXT Frequency List struct > ::=

{ < START_FREQUENCY : bit (10) >

< NR_OF_FREQUENCIES : bit (5) >

< FREQ_DIFF_LENGTH : bit (3) >

{ < FREQUENCY_DIFF : bit (1+val(FREQ_DIFF_LENGTH)) >} * (val(NR_OF_FREQUENCIES))};

< ENH Reporting parameters struct > ::=

< Report_Type : bit >
< REPORTING_RATE : bit >

< INVALID_BSIC_REPORTING : bit >

{ 0 | 1 < NCC_PERMITTED : bit (8) > }

{ 0 | 1 < GPRS MEASUREMENT Parameters Description : < GPRS MEASUREMENT Parameters Description struct >> }

{ 0 | 1 < GPRS 3G MEASUREMENT Parameters Description : < GPRS 3G MEASUREMENT Parameters Description struct>> } ;

< GPRS MEASUREMENT PARAMETERS Description struct > ::=

{ 0 | 1 < Multiband_Reporting : bit (2) > }
{ 0 | 1 < Serving_Band_Reporting : bit (2) > }
{ 0 | 1 < SCALE_ORD : bit (2) > }

{ 0 | 1 < 900_REPORTING_OFFSET : bit (3) >
< 900_REPORTING_THRESHOLD : bit (3) > }

{ 0 | 1 < 1800_REPORTING_OFFSET : bit (3) >

< 1800_REPORTING_THRESHOLD : bit (3) > }

{ 0 | 1 < 400_REPORTING_OFFSET : bit (3) >

< 400_REPORTING_THRESHOLD : bit (3) > }

{ 0 | 1 < 1900_REPORTING_OFFSET : bit (3) >

< 1900_REPORTING_THRESHOLD : bit (3) > }

{ 0 | 1 < 850_REPORTING_OFFSET : bit (3) >

< 850_REPORTING_THRESHOLD : bit (3) > } ;

< GPRS 3G MEASUREMENT PARAMETERS Description struct > ::=

{ 0 | 1 < FDD_REP_QUANT : bit > — FDD Parameters
< FDD_MULTIRAT_REPORTING : bit (2) > }
{ 0 | 1 < FDD_REPORTING_OFFSET : bit (3) >
< FDD_REPORTING_THRESHOLD : bit (3) > }

{ 0 | 1 < TDD_MULTIRAT_REPORTING : bit (2) > } — TDD Parameters
{ 0 | 1 < TDD_REPORTING_OFFSET : bit (3) >
< TDD_REPORTING_THRESHOLD : bit (3) > } ;

Table 11.2.23.2: PSI5 information element details

The optional PSI5 message contains broadcast measurement parameters for either Network Control (NC) measurements containing the NC Measurement Parameters, or for Extended measurements containing the EXT Measurement Parameters, or for both. If included, the NC Measurement parameters struct shall only exist in one instance of the PSI5 message. If the NC Measurement parameters struct is included in more than one instance, the value of the struct in the instance with the highest index shall be valid and all others shall be ignored.

The ‘EXT measurement parameters struct’ contains the EXT Measurement Order, the EXT parameters and one or more EXT Frequency List structs. If the value of the EXT Measurement Order or any of the EXT parameters differs between instances of the PSI5 message, the value of the parameter in the instance with the highest index shall be valid and all others shall be ignored.

PAGE_MODE (2 bit field)
This field is defined in sub-clause 12.20.

PSI5_CHANGE_MARK (2 bit field)
The PSI5_CHANGE_MARK field is changed each time information has been updated in any of the individual instances of the PSI5 message. A new value indicates that the mobile station shall re-read the information from all PSI5 messages. Range: 0 to 3. The coding of this field is network dependent.

PSI5_INDEX (3 bit field) and PSI5_COUNT (3 bit field)
The purpose of the PSI5_INDEX field and the PSI5_COUNT field is to indicate the number of individual messages within the sequence of PSI5 messages and to assign an index to identify each one of them. The PSI5_INDEX field is binary coded, range: 0 to 7, and provides an index to identify the individual PSI5 message. The PSI5_COUNT field is binary coded, range: 0 to 7, and provides the PSI5_INDEX value for the last (highest indexed) message in the sequence of PSI5 messages.

NETWORK_CONTROL_ORDER (2 bit field)
The NETWORK_CONTROL_ORDER field is coded according to the following table (for definition of NCx see 3GPP TS 05.08):

bit
2 1
0 0 NC0
0 1 NC1
1 0 NC2
1 1 Reserved

If the NETWORK_CONTROL_ORDER parameter = NC0, then the other parameters in the NC Measurement parameters struct may be omitted. If the NETWORK_CONTROL_ORDER parameter indicates NC1 or NC2 and the other parameters are omitted, the default value for these parameters shall be assumed.

NC_NON_DRX_PERIOD (3 bit field)
This field indicates the minimum time the mobile station shall stay in non-DRX mode after an NC-measurement report has been sent. The field is coded according to the following table:

bit
3 2 1
0 0 0 No non-DRX mode after a measurement report has been sent.
0 0 1 0,24 sec
0 1 0 0,48 sec (default value)
0 1 1 0,72 sec
1 0 0 0,96 sec
1 0 1 1,20 sec
1 1 0 1,44 sec
1 1 1 1,92 sec

NC_REPORTING_PERIOD_I (3 bit field)
NC_REPORTING_PERIOD_T (3 bit field)
These fields indicate the time period for cell reselection measurement reporting for packet idle mode (I) and packet transfer mode (T), respectively. The field is coded according to the following table:

bit
3 2 1
0 0 0 0.48 sec
0 0 1 0.96 sec
0 1 0 1.92 sec
0 1 1 3.84 sec (default value for NC_REPORTING_PERIOD_T)
1 0 0 7.68 sec
1 0 1 15.36 sec
1 1 0 30.72 sec
1 1 1 61.44 sec (default value for NC_REPORTING_PERIOD_I)

EXT Measurements
The ‘EXT Measurements Parameters’ can be repeated in a sequence of PSI5 message instances where each message instance can contain a sub-list of frequency (ARFCN) parameters. The sub-lists shall be concatenated into a resulting frequency list in order of ascending PSI5 message instances. Each added frequency position in the resulting frequency list shall then be assigned an ascending index used for measurement reports. If the same frequency is defined more than once in the resulting list, each occurrence will get en index, but measurements shall only be performed and reported for the last added position.

EXT_MEASUREMENT_ORDER (2 bit field)
The EXT_MEASUREMENT_ORDER field indicates to the mobile station how to interpret the rest of the extended measurement parameters. This field is coded according to the following table (for definition of EMx see 05.08):

bit
2 1
0 0 EM0
0 1 EM1
1 0 Reserved.
1 1 Reserved and shall be interpreted as EM0 by the receiver.

If the EXT_MEASUREMENT_ORDER parameter = EM1 the optional parameters in the EM1 struct may beincluded in at least one instance of the message. If a field is included in more than one instance, the value of the field in the instance with the highest index shall be valid and all others shall be ignored.

NCC_PERMITTED (8 bit field)
This field is a bitmap of NCCs for which the mobile station is permitted to report measurement; this bitmap relates to NCC part of BSIC (see coding field in 04.08).

EXT_REPORTING_TYPE (2 bit field)
This field indicates the type of extended measurement reporting to which the frequencies on the list are subject. This field is coded according to the following table (see 3GPP TS 05.08):

bit
2 1
0 0 Type 1 measurement reporting (default value for EXT_REPORTING_TYPE
0 1 Type 2 measurement reporting
1 0 Type 3 measurement reporting
1 1 Reserved. In this version of the protocol the mobile station shall ignore the entire list containing this field.

EXT_REPORTING_PERIOD (3 bit field)
The EXT_REPORTING_PERIOD field indicates the time interval between extended measurement reports. This field is coded according to the following table:

bit
3 2 1
0 0 0 60 sec
0 0 1 120 sec
0 1 0 240 sec
0 1 1 480 sec
1 0 0 960 sec
1 0 1 1920 sec (default value for EXT_REPORTING_TYPE
1 1 0 3840 sec
1 1 1 7680 sec

INT_FREQUENCY (5 bit field)
This optional field indicates the frequency upon which the interference measurement shall be made. This field is an index into the EXT Frequency List. If the field is not included in any instance of the message, no interference measurements shall be done.
Range 0 to 31

EXT_FREQUENCY_LIST
Contains the EXT Frequency List description struct. The EXT Frequency Lists description struct may contain multiple EXT frequency list struct.

START_FREQUENCY (10 bit field)
The START_FREQUENCY defines the ARFCN for the first carrier in the list (ARFCN(0)).

FREQ_DIFF_LENGTH (3 bit field)
This field is required to calculate the number of bits to be used for the FREQUENCY_DIFF field in the current frequency group.

FREQUENCY_DIFF (1+val(FREQ_DIFF_LENGTH) bit field)
Each FREQUENCY_DIFF parameter field specifies the difference in frequency to the next carrier to be defined. The F REQUENCY_DIFF parameter encodes a non negative integer in binary format (W). Each frequency following the start frequency (ARFCN(0)) and belonging to the Frequency List struct is then calculated by the formula ARFCN(n) = (ARFCN(n-1) + W(n) ) modulus 1024, n=1, . . ., val(NR_OF_FREQUENCIES

ENH Reporting Parameters (Enhanced Measurement reporting parameters)

Report_Type (1bit)
This parameter is used to indicate to the mobile station to use the PACKET ENHANCED MEASUREMENT REPORT message or the PACKET MEASUREMENT REPORT message for (NC) reporting:

Bit
0 The MS shall use the PACKET ENHANCED MEASUREMENT REPORT message for (NC) reporting
1 The MS shall use the PACKET MEASUREMENT REPORT message for (NC) reporting.

REPORTING_RATE (1 bit)
This parameter is used for measurements, see 3GPP TS 05.08.

Bit
0 normal rate reporting
1 Reduced reporting rate allowed.

INVALID_BSIC_REPORTING (1 bit)
This field specifies if cells with invalid BSIC and allowed NCC part of BSIC are allowed to be reported or not, see 3GPP TS 05.08.

Bit
0 Report on cells with invalid BSIC and allowed NCC part of BSIC is not allowed.
1 Report on cells with invalid BSIC and allowed NCC part of BSIC is allowed. In this case NCC_PERMITTED is required.

GPRS MEASUREMENT PARAMETERS Description

The fields of this Description are used for measurements as defined in 3GPP TS 05.08.

GPRS 3G MEASUREMENT PARAMETERS Description

The fields of this Description are used for measurements as defined in 3GPP TS 05.08.