12.52 3G Priority Parameters

3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS

This information element is sent to provide priority information about neighbouring UTRAN cells.

Table 12.52.1: 3G priority parameters information element

< 3G Priority Parameters IE > ::=

{ 0 | 1 < DEFAULT_UTRAN_PRIORITY : bit(3) >

< DEFAULT_THRESH_UTRAN: bit(5) >

< DEFAULT_UTRAN_QRXLEVMIN: bit(5) }

{ 1 < Repeated UTRAN Priority Parameters : < Repeated UTRAN Priority Parameters struct >> } ** 0 ;

< Repeated UTRAN Priority Parameters struct > ::=
{ 1 < UTRAN_FREQUENCY_INDEX : bit (5) > } ** 0

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

< THRESH_UTRAN_high: bit(5) >

{ 0 | 1 < THRESH_UTRAN_low: bit(5) > }

{ 0 | 1 < UTRAN_QRXLEVMIN: bit(5) > } ;

Table 12.52.2: 3G priority parameters information element details

DEFAULT_UTRAN_PRIORITY (3 bit field)
DEFAULT_THRESH_UTRAN (5 bit field)
DEFAULT_UTRAN_QRXLEVMIN (5 bit field)
These fields are used for the inter-RAT cell re-selection algorithm based on priority, as defined in 3GPP TS 45.008. Any UTRAN frequency added or modified in the Packet Measurement Order message (full set of instances) and not explicitly listed in the Repeated UTRAN Priority Parameters structure shall be assigned these default parameter values. The value of DEFAULT_THRESH_UTRAN shall apply to both THRESH_UTRAN_high and THRESH_UTRAN_low.

Repeated UTRAN Priority Parameters

UTRAN_FREQUENCY_INDEX (5 bit field)
This field is an index into the 3G Frequency list (see sub-clause 5.6.3.7b).

UTRAN_PRIORITY (3 bit field)
THRESH_UTRAN_high (5 bit field)
THRESH_UTRAN_low (5 bit field)
UTRAN_QRXLEVMIN (5 bit field)

These fields are used for the inter-RAT cell re-selection algorithm based on priority, as defined in 3GPP TS 45.008. These parameters apply to each UTRAN frequency indexed within the structure.

If THRESH_UTRAN_low is not present, then THRESH_UTRAN_low shall take on the same value as THRESH_UTRAN_high.

Any parameter present overwrites any old data held by the mobile station for these parameters.