9.1.67 EC DOWNLINK ASSIGNMENT TYPE 2

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 to assign downlink packet resources to a mobile station that has enabled EC operation, supports uplink coverage class CC5 and uplink coverage class CC5 is assigned.

Message type: EC DOWNLINK ASSIGNMENT TYPE 2

Significance: dual

Direction: network to mobile station

Table 9.1.67.1: EC DOWNLINK ASSIGNMENT TYPE 2 message content

< EC Downlink Assignment message Type 2 content > ::=

< Message Type : bit (4) >

< Used DL Coverage Class: bit (2) >

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

< TLLI : bit (32) >

< EC Packet Channel Description Type 3 : bit (15) > — This is a new parameter in EC DA type 2 vs. EC DA type 1.

< EC Downlink Allocation : < EC Downlink Allocation struct >>

<spare padding> ;

< EC Downlink Allocation struct > ::=

< Timing Advance : bit (6) >

< STARTING_DL_TIMESLOT : bit (3) >

< Downlink_TFI_Assignment : bit (5) >

< TIMESLOT_MULIPLICATOR : bit (2) >

< STARTING_UL_TIMESLOT_OFFSET (2) >

< GAMMA : bit (5) >

< ALPHA Enable : bit (1) >

{ 0 | 1 < P0 : bit (4) >

< PR_MODE : bit (1) > } ;

Table 9.1.67.2: EC DOWNLINK ASSIGNMENT TYPE 2 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.

TLLI (32 bit field)

This field is the binary representation of a TLLI. The coding of TLLI is left open for each administration using the structure specified in 3GPP TS 23.003.

EC Packet Channel Description Type 3 (15 bit field)

This information element is coded as described in sub-clause 10.5.2.88.

Timing Advance (6 bit field)

This field is coded as described in sub-clause 9.1.60

STARTING_DL_TIMESLOT (3 bit field)

This field is coded as described in sub-clause 9.1.64.

Downlink_TFI_Assignment (5 bit field)

This field is the binary representation of the Temporary Flow Identity, see 3GPP TS 44.060. Range: 0 to 31.

TIMESLOT_MULTIPLICATOR (2 bit field)
This field is coded as described in sub-clause 9.1.64.

STARTING_UL_TIMESLOT_OFFSET (2 bit field)
This field is coded as described in sub-clause 9.1.64.

GAMMA (5 bit field)

This field is the binary representation of the parameter CH for MS output power control in units of 2 dB, see 3GPP TS 45.008.

ALPHA Enable (1 bit field)

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

P0 (4 bit field)

For description and encoding, see the Packet Uplink Assignment message in 3GPP TS 44.060.

PR_MODE (1 bit field)

For description and encoding, see the Packet Uplink Assignment message in 3GPP TS 44.060.