J.3 Controlling changes in dynamic mapping

3GPP45.005GSM/EDGE Radio transmission and receptionTS

Dynamic mapping may need to be changed in a live network e.g. when the operator is taking new frequency allocations into use or if the existing frequency allocation is changed. Since the mobile stations decode the information about dynamic mapping periodically only in idle mode, valid mapping must be broadcast well before the new mapping is taken into use.

An example case of a change in dynamic mapping is described by the following steps:

– Assume that the network is initially broadcasting dynamic mapping for 4 different frequency blocks, referred as DM1, DM2, DM3 and DM4.

– Assume that DM1 is covering the frequency range from x to x + 5 MHz and the frequency band allocated for the operator is changed to the range from x – 5 MHz to x + 2 MHz (extension and change of frequency allocation at the same time).

– The operator should then start to broadcast a new dynamic mapping DM1, DM2, DM3, DM4 and DM5 where the old frequency allocation is mapped by DM1 and the new allocation is mapped by DM5. The requirement is that the ARFCN numbers used for DM1 and DM5 are non-overlapping.

– Once the operator has used this new system information sufficiently long, the change in the frequency allocation can be carried out. Note that this change needs to be done like any similar change with fixed mapping scheme, the change should occur simultaneously for all active resources in a given cell, including likely changes in neighbour cell SI messages.

– At any time after the actual change in the frequency allocation, the operator may start broadcasting dynamic mapping excluding DM1, i.e. including only DM5, DM2, DM3 and DM4.

Transmission of duplicated mapping information (DM1 & DM5 in the above example) should last as long as the longest supported continuous call at the time the change in mapping takes place. This allows all mobiles decode the new mapping information in idle mode. Alternatively the network may provide the new mapping information in dedicated mode through SACCH with System Information type 14 message. This option allows infinite calls and reduces the time required for broadcasting of duplicated mapping information.

Annex K (normative):
Reference TFCs for FLO

In all reference TFCs, the TFCI shall be random.

For each reference TFC, the size of the uncoded in-band signalling bits shall be set equal to the size of the uncoded TFCI for that TFC.

Reference TFC 1: ‘Signalling (9.2 kbit/s) on GMSK FR channel’

	TrCH 1
TB size	184
CRC	18
RMA	256
Channel mode	FR
Modulation	GMSK
Interleaving	40 ms
TFCI	5 bits

Reference TFC 2: ‘Low bit-rate codec (5 kbit/s) on GMSK HR channel’

	TrCH 1	TrCH 2
TB size	50	50
CRC	6	0
RMA	256	226
Channel mode	HR
Modulation	GMSK
Interleaving	40 ms
TFCI	2 bits

Reference TFC 3: ‘Medium bit-rate codec (10 kbit/s) on GMSK FR channel’

	TrCH 1	TrCH 2
TB size	100	100
CRC	6	0
RMA	256	226
Channel mode	FR
Modulation	GMSK
Interleaving	40 ms
TFCI	3 bits

Reference TFC 4: ‘Medium bit-rate codec (10 kbit/s) on 8PSK HR channel’

	TrCH 1	TrCH 2
TB size	100	100
CRC	6	0
RMA	256	226
Channel mode	HR
Modulation	8PSK
Interleaving	40 ms
TFCI	4 bits

Reference TFC 5: ‘High bit-rate codec (20 kbit/s) on 8PSK FR channel’

	TrCH 1	TrCH 2
TB size	200	200
CRC	6	0
RMA	256	226
Channel mode	FR
Modulation	8PSK
Interleaving	40 ms
TFCI	5 bits

Reference TFC 6: ‘Multiple transport blocks (30 kbit/s) on 8PSK FR channel’

	TrCH 1	TrCH 2	TrCH 3	TrCH 4
TB size	150	150	150	150
CRC	12	12	12	12
RMA	256	256	256	256
Channel mode	FR
Modulation	8PSK
Interleaving	20 ms
TFCI	5 bits

Reference TFC 7: ‘High bit-rate data (50 kbit/s) on 8PSK FR channel’

	TrCH 1
TB size	1000
CRC	18
RMA	256
Channel mode	FR
Modulation	8PSK
Interleaving	20 ms
TFCI	1 bit

Annex L (normative):
Reference Test Scenarios for DARP

In all reference DARP Test Scenarios (DTS), the wanted signal shall always use Training Sequence (TSC) 0.

In each reference Test Scenario, the co-channel and adjacent channel interferers are GMSK modulated. The power of these interferers is measured before any receiver filtering and during the active part of the desired burst (see 3GPP TS 45.004). The use of Training sequence for the interferers varies between the Test Scenarios as defined below. When no TSC is indicated the midamble is filled with random data bits. Random TSC means that TSC is randomly selected on a burst-by-burst basis from {TSC1,…,TSC7}.

In some test scenarios an AWGN source is added to the interferers. The AWGN power is measured over a bandwidth of 270,833 kHz.

All power levels are relative to the signal level of the strongest co-channel interferer.

Power ramping according to the requirements in 3GPP TS 45.005 shall be applied to all delayed interferers. The other interferers shall be random, continuous GMSK-modulated signals.

NOTE: The non-delayed interferer is the same signal for which reference interference performance requirements normally apply (see clause 6.3).

In adjacent timeslots of the delayed interferers no power shall be applied.

The level of the strongest co-channel interferer (Co-channel 1) shall be -80 dBm.

The delay is measured from the same bit position in the wanted signal burst and the interferer burst, where the position in the wanted signal is the reference position.

Reference Test Scenario for synchronous single co-channel interferer

Reference Test Scenario	Interfering Signal	Interferer relative power level	TSC	Interferer Delay range
DTS-1	Co-channel 1	0 dB	none	no delay

Reference Test Scenarios for synchronous multiple interferers

Reference Test Scenario	Interfering Signal	Interferer relative power level	TSC	Interferer Delay range
DTS-2	Co-channel 1 Co-channel 2 Adjacent 1 AWGN	0 dB -10 dB 3 dB -17 dB	none none none –	no delay no delay no delay –
DTS-3	Co-channel 1 Co-channel 2 Adjacent 1 AWGN	0 dB -10 dB 3 dB -17 dB	random none none –	-1 to +4 symbols*) no delay no delay –
*) The delay shall be an integer number of symbols, arbitrarily chosen within the given interval and fixed throughout each test case.

Reference Test Scenario for asynchronous single co-channel interferer

Reference Test Scenario	Interfering Signal	Interferer relative power level	TSC	Interferer Delay
DTS-4	Co-channel 1	0 dB *)	none	74 symbols
*) The power of the delayed interferer burst, averaged over the active part of the wanted signal burst. The power of the delayed interferer burst, averaged over the active part of the delayed interferer burst is 3 dB higher.

Reference Test Scenario for asynchronous multiple interferers

Reference Test Scenario	Interfering Signal	Interferer relative power level	TSC	Interferer Delay
DTS-5	Co-channel 1 Co-channel 2 Adjacent 1 AWGN	0 dB *) -10 dB 3 dB -17 dB	none none none –	74 symbols no delay no delay –
*) The power of the delayed interferer burst, averaged over the active part of the wanted signal burst. The power of the delayed interferer burst, averaged over the active part of the delayed interferer burst is 3 dB higher.

Annex M (normative):
Minimum Performance Requirements for Assisted Global Positioning System (A-GPS)

This Annex defines the minimum performance requirements for A-GPS for MSs that support A-GPS. It includes the minimum performance requirements for both MS based and MS assisted A‑GPS terminals.