12.65 Dynamic Allocation 3

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 provides the description of the uplink dynamic allocation information for a BTTI or an RTTI assignment in a DLMC configuration with or without power control parameters.

Table 12.65.1: Dynamic Allocation 3 information element

< Dynamic Allocation 3 IE > ::=

< EXTENDED_DYNAMIC_ALLOCATION : bit (1) >

< USF_GRANULARITY : bit (1) >

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

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

{ 0 — BTTI mode

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

< GAMMA: bit (5) > } } ** 0 — one instance provided for each assigned PDCH

| 1 — RTTI mode

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

< GAMMA : bit (5) >

{ 0 — RTTI USF mode

| 1 — BTTI USF mode

{ 0 — same BTTI USF for each RTTI block

| 1 < USF_2 : bit (3) > } — BTTI USF for the 2nd RTTI block

} } } ** 0 — one instance provided for each assigned PDCH-pair

} ;

Table 12.65.2: Dynamic Allocation 3 information element details

EXTENDED_DYNAMIC_ALLOCATION (1 bit field)
This information field indicates the medium access mode to be used during the TBF.
0 Dynamic Allocation
1 Extended Dynamic Allocation

USF_GRANULARITY (1 bit field)
This information field indicates the USF granularity to be applied by the mobile station when it is assigned a TBF using Dynamic Allocation or Extended Dynamic Allocation.

0 the mobile station shall transmit one RLC/MAC block
1 the mobile station shall transmit four consecutive RLC/MAC blocks

ALPHA (4 bit field)
For encoding and description see the Global Power Control Parameters IE.

TSC (3 bit field)
This field is the binary representation of the training sequence code, see 3GPP TS 45.002. Range: 0 to 7. In the absence of this field the applicable TSC shall be the same as the corresponding downlink carrier.

USF, USF_2 (3 bit field)

These fields indicate the USF values assigned to a given TBF for the assigned timeslot or PDCH pair.

In the case of RTTI mode with BTTI USF, the USF value specified in the USF field (respectively USF_2 field) applies to the first two (respectively second two) TDMA frames of the following basic radio block period (see sub-clauses 8.1.1.1, 8.1.1.2.1).

These fields are encoded as a binary representation of the USF value as defined in sub-clause 10.4.1.

The order in which USF assignments are encoded and the meaning when the number of repetitions of the USF is lower than the maximum is described in Annex K.

GAMMA (5 bit field)
This field is the binary representation of the parameter GCH for MS output power control in units of 2 dB, see 3GPP TS 45.008 [15]. The field is coded according to the following table:

bit
5 4 3 2 1
0 0 0 0 0 GCH = 0 dB
0 0 0 0 1 GCH = 2 dB
: : : :
1 1 1 1 0 GCH = 60 dB
1 1 1 1 1 GCH = 62 dB

In the case of RTTI mode with BTTI USF, exactly one GAMMA field shall be included for each PDCH pair for which either one or two USF values are assigned.