12.41 MPRACH Control Parameters

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

The purpose of the MPRACH Control Parameters information element is to provide parameters used to control the MPRACH utilization.

Table 12.41.1: MPRACH Control Parameters information elements

< MPRACH Control Parameters IE > ::=

{ 0 | 1< ACC_CONTR_CLASS : bit (16) > }

{ 0 | 1< MAX_RETRANS : bit (2) > } 

< S : bit (4) >

{ 0 | 1 < TX_INT : bit (4) > }

{ 0 | 1 < PERSISTENCE_LEVEL : bit (4) > } ;

Table 12.41.2: MPRACH Control Parameters information element details

TX_INT (4 bit field)
Number of slots to spread transmission of the random access. This information element is encoded as defined in sub-clause 12.14.

S (4 bit field)
S is a parameter used for calculation of the minimum number of slots between two successive Channel request messages. This information element is encoded as defined in sub-clause 12.14.

MAX_RETRANS (2 bit field)
Indicates the maximum number of retransmissions allowed. This information element is encoded as defined in sub-clause 12.14.

PERSISTENCE_LEVEL (4 bit field)
The PERISTENCE_LEVEL field indicates the values of the access persistence level. This information element is encoded as defined in sub-clause 12.14.

ACC_CONTR_CLASS ( 16 bit field)
Access Control Class N (bit 1-16) (see octet 3 and 4 of the RACH Control Parameters IE in 3GPP TS 44.018) . This information element is encoded as defined in sub-clause 12.14.