View
47
Download
1
Category
Preview:
DESCRIPTION
WCDMA Release Roadmap
Citation preview
1 Nokia Siemens Networks Confidential
Nokia Siemens Networks WCDMA Release Roadmap
2 Nokia Siemens Networks Confidential
RU20
3 Nokia Siemens Networks Confidential
HSDPA 42 Mbps (Dual-Cell HSDPA + 64QAM)
RU20
Feature ID(s): RAN1906
HSDPA peak rates up to 42 Mbps User rate and capacity gains up to 100%
In Dual-Cell HSDPA one UE can be allocated HSDPA channels from two adjacent carriers
Dual-Cell HSDPA with 64QAM allows bit rates up to 42 Mbps
Compared to 21 Mbps HSDPA
Dual-Cell HSDPA user rate gain 100% in low load (double spectrum)
Dual-Cell HSDPA capacity gain 20% in full load (improved scheduling)
In real networks clearly above 20% capacity gain depending on the traffic profile
Gains are achieved also at cell edge
Scheduling gain comes from de-correlation of fading on both frequencies
Single Flexi RF Module Triple supports configuration of Dual-Cell HSDPA 2+2+2 (70W /sector)
Two parallel carriers for Dual-Cell
2 x 5 MHz 1 x 5 MHz
Uplink Downlink
I-HSPA Rel.3
4 Nokia Siemens Networks Confidential
HSDPA 21 Mbps (64QAM)
Higher HSDPA peak rates up to 21Mbps
Feature ID(s): RAN1643
64QAM improves throughput of UEs with good downlink channel
Minor gain in average rate and cell capacity *): 5%-10% in loaded network
~15% in low other cell interference (e.g. microcell)
Dual receiver UEs have better performance with 64QAM
*) Capacity gains assume 100% 64QAM UE penetration. Full buffer traffic model.
64QAM cell throughput gain in comparison to 15 codes 16QAM
0
2
4
6
8
10
12
14
PedA 3 km/h VehA 3 km/h Micro (6 dB isolation)
%
1-Rx Equalizer
2-Rx Equalizer
RU20 I-HSPA Rel.3
5 Nokia Siemens Networks Confidential
MIMO 28 Mbps RU20 I-HSPA Rel.4
MIMO increases user peak rates up to 28 Mbps
Feature ID(s): RAN1642
MIMO (Multiple Input - Multiple Output):
Multipath propagation is harnessed to send two parallel data streams
2x2 MIMO peak rate is 28Mbps with 16QAM
High rates require good radio conditions and multipath
Network level gains require significant MIMO terminal base
+
+
Coding, spreading
Coding, spreading
Base station UE
2 antennas & MIMO decoding capability
Transmitter with 2 branches per sector
Feedback weights from UE
28 Mbps
Demux
14 Mbps
14 Mbps
6 Nokia Siemens Networks Confidential
HSUPA 5.8Mbps
Feature ID(s): RAN981, RAN1470
HSUPA peak rate is increased up to 5.8Mbps/user 2ms TTI on the air interface and Iub
HSUPA 2 ms TTI decreases latency at least by 12 ms
Enables HSPA latency evolution to below 30 ms
Increased HSUPA peak rate and decreased latency
1 x SF4 0.71 Mbps
# of codes 10 ms
2 x SF4 1.45 Mbps
1
UE category
2
3
4
5
2 x SF4 1.45 Mbps
2 x SF2 2.0 Mbps
2 x SF2 2.0 Mbps
6 2 x SF2
+ 2 x SF4 2.0 Mbps
-
2 ms
-
1.45 Mbps
2.8 Mbps
-
5.8 Mbps
Max L1 data rate/user
RU20 I-HSPA Rel.3
7 Nokia Siemens Networks Confidential
Flexible RLC (DL)
Feature ID(s): RAN1638
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
0 500 1000 1500
IP packet size
Release 6 RLC (40-B RLC packet)
Release 7 RLC (Flexible RLC)
Throughput gain Less packet processing
RLC overhead
RLC PDU size is determined based on the RLC SDU size, i.e. IP packet
No RLC layer padding needed
5-10% throughput gain expected from the reduced RLC overhead
Less RLC processing both in UE and network side for all HSDPA bit rates
RLC
MAC-hs
IP packet 1500B
Node B
RNC PDCP
RLC packet 40B
3GPP Rel-6
RLC
MAC-ehs
IP packet 1500B PDCP RLC packet size flexible up to 1500B
3GPP Rel-7
Transport block size depending on scheduling
Transport block size depending on scheduling
RU20 I-HSPA Rel.3
8 Nokia Siemens Networks Confidential
Continuous Packet Connectivity
Longer battery life, higher capacity and better user experience
Feature ID(s): RAN1644
Continuous Packet Connectivity (CPC) includes Uplink DPCCH gating: major gain in UL cell throughput with high user amounts, major
gain in UE battery life, CS over HSPA enabler
Downlink DRX : additional gain in UE battery life (F-DPCH required)
Lower mobile power consumption Higher capacity due to less interference transmitted Benefits both voice and data over HSPA
HSPA R6 data
HSPA R7 data with CPC
UL DPCCH
HS-DSCH
UL DPCCH
HS-DSCH
Web page download
Break in data transmission
UL DTX when data transfer stops
Voice over HSPA with CPC
WCDMA R99 CS voice DPCCH
DPDCH
20 ms
E-DPCH
DPCCH
UL DTX between speech frames
RU20 I-HSPA Rel.3
9 Nokia Siemens Networks Confidential
CS Voice over HSPA RU20
Feature ID(s): RAN1689
I-HSPA Rel.4
50% increase in UE talk time, 50% faster call set-ups, 50% more radio capacity Compared to CS voice over DCH
CS voice over HSPA impacts only RAN: HSPA transport channels carry CS voice Uplink gating and downlink DRX are used according to Release 7 Continuous
packet connectivity (CPC)
No changes to voice ecosystem: CS core, roaming, charging, etc. remain the same Smooth inter-working between 2G and 3G with existing CS inter-system handover
MSC
-S
MG
W
PSTN
RN
C
Today
RAN: CS voice over
HSPA
CS voice over
HSPA
CN: R99 or R4
CS solution
RAN: CS voice over
DCH
Iu-CS CN: R99 or R4
CS solution
No changes to core network. CS
core is not aware of RAN internal
transport channel mapping
CS voice is carried over
HSPA packet bearers in the
radio access network
No changes to
Iu-CS interface
10 Nokia Siemens Networks Confidential
Fractional DPCH
Feature ID(s): RAN1201
Fractional DPCH shares the DL dedicated code channel carrying L1 signaling (TPC bits) of HSDPA users
DL L1 signaling of up to 10 HSDPA users are multiplexed on the same code channel
HSDPA throughput can be increased Highest gains in case of high number of users (e.g. >60-80 voice on HSPA users)
Without F-DPCH, 15 codes available for HS-PDSCH only when 1 or 2 HSDPA users in the cell
Less control overhead in DL
Increased HSDPA throughput
Slot 0.667 ms = 2/3 ms
TPC
DPCCH
Pilot Data TPC
DPDCH DPDCH
Data
DPCCH DPCCH
TFCI DPCH Slot
F-DPCH Slot TX OFF TX OFF
RU20 I-HSPA Rel.3
11 Nokia Siemens Networks Confidential
Fast Dormancy (Rel8) RU20
Feature ID(s): RAN2136
Fast Dormancy is an optional feature in 3GPP Rel8 for UEs
UEs supporting this feature can be controlled by network and yet save batteries
New release cause for Signaling Connection Release Indication message can be used by UEs to indicate that active PS data transfer has concluded
Upon reception of this message the RNC triggers state transition to Cell_PCH instead of letting the UE to go to idle mode
URA_PCH state can be selected for fast moving UEs
Cell_PCH has a very low battery consumption, comparable to idle state
HSPA setup from Cell_PCH to Cell_DCH is faster and requires much less signaling compared to starting from idle state
Reduced signaling load and faster packet call setups
12 Nokia Siemens Networks Confidential
Thank you.
Recommended