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2nd Carrier New Strategies
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Strategy I: Cell Barred with 1 HSDPA Layer (Light HSDPA Traffic)
Idle Mode Strategy
Default Settings will be applied for Idle Mode Parameter both F1 and F2.
AMR+R99
HSDPA+R99 F2: Cell Barred (Not allow to be camped in Idle Mode)
F1: Default Setting for Idle Mode
Mobile camps on F1 only in idle mode.
Whenever the mobile starts making call, the mobile will be directed to the right layer using Enhance DRRC feature.
Related Features: 2nd Carrier Principle
AMR+R99
HSDPA+R99
GSM
HSDPA+R99
HSDPA+R99
HSDPA+R99
EDRRC HSPA Capability Based Handover
2nd Carrier Cluster
F2
F1
2G
HSPA Inter frequency Handover
HSLCC
Related Feature• Enhanced Directed RRC connection setup for HSDPA layer (EDRRC)• HSPA layering for UEs in common channels (HSLCC)• HSPA Capability Based Handover • HSPA Inter frequency Handover
Done during Call Setup
GSM GSM
AMR+R99 AMR+R99
Sector 1 Sector 3Sector 2
Neighbour Definition Strategy
F2: HSDPA+R99
F1: AMR+R99
GSM
HSDPA+R99
GSM
F2: ADJS and ADJI
F1: ADJS and ADJG
F3: ADJW and ADCEAlready Existed in the network. No Need to Modify
Need to be defined
Sector 1 Sector 3Sector 2
AMR+R99
Pros and Cons
• Pros:– Traffic Behavior is controllable.– HSDPA Codes Pre-emption is controllable.– Simple for Neighbour Definition. Just only define Adji and Adjs for F2.
(Neighbours of Existing Layer (F1 and GSM) do not need to do anything)– There will be no problem with existing ADJ having neighbour > 47.– Simple Parameter Setting for Idle Mode– Less CE Consumption
• Cons:– No IFSO from F1 to F2 for a PS call when handover needed. The PS call from
F1 will hand off to GSM layer instead. ( One Way ADJI defined between F1 and F2). This could cause 3G throughput downgraded to GPRS speed.
– Less HSDPA Capacity
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Strategy II: Random Access with equal service Layers (Modulate HSDPA Traffic)
Idle Mode Strategy
Default Settings will be applied for Idle Mode Parameter both F1 and F2.
AMR+R99+HS
AMR+R99+HS F2: Default Setting for Idle Mode
F1: Default Setting for Idle Mode
Mobile randomly camps on either F1 or F2 in idle mode.
Related Features: 2nd Carrier Principle
GSM
AMR+R99+HS
DRRC
HSPA Capability Based Handover
2nd Carrier Cluster
F2
F1
2G
Related Feature• Directed RRC connection setup Feature (DRRC)• HSPA Inter frequency Handover
Done during Call Setup
GSM GSM
AMR+R99+HS
AMR+R99+HS AMR+R99+HSAMR+R99+HS
AMR+R99+HS AMR+R99+HS
HSPA Inter frequency Handover
Sector 1 Sector 3Sector 2
Neighbour Definition Strategy
F2: HSDPA+R99
F1: AMR+R99
GSM
HSDPA+R99
GSM
F2: ADJS and ADJI
F1: ADJS and ADJG
F3: ADJW and ADCEAlready Existed in the network. No Need to Modify
Need to be defined
Sector 1 Sector 3Sector 2
AMR+R99
Pros and Cons
• Pros:– Better HSDPA Mobility in F1 – Simple Parameter Setting for Idle Mode– Double HSDPA Capacity (2 HSDPA in both F1 and F2)– Using less feature.– Reduce DRRC and HLCC signaling between F1 and F2 Layers
• Cons:– Unable to control the traffic behavior of all services. Most likely that all
traffic could be in F2 due to better RF condition.– HSDPA Codes are pre-emptioned (stolen) by AMR and PS R99 Calls. It
can make HSDPA Throughput low. – Consume more CE– Neighbour Definition is complicated. And there will be some problem
with existing ADJ having neighbour > 47.
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Strategy III: Cell Barred with 2 HSDPA Layers plus Load Sharing (Modulate-High HSDPA Traffic)
Idle Mode Strategy
Default Settings will be applied for Idle Mode Parameter both F1 and F2.
F2: Cell Barred (Not allow to be camped in Idle Mode)
F1: Default Setting for Idle Mode
Mobile camps on F1 only in idle mode.
Whenever the mobile starts making call, the mobile will be directed to the right layer using Enhance DRRC feature.
AMR+R99+HS
AMR+R99+HS
Related Features: 2nd Carrier Principle
GSM
HSDPA+R99
EDRRCHSPA Capability Based Handover
2nd Carrier Cluster
F2
F1
2G
HSPA Inter frequency Handover
HSLCC
Related Feature• Enhanced Directed RRC connection setup for HSDPA layer (EDRRC)• HSPA layering for UEs in common channels (HSLCC)• HSDPA load balancing • HSPA Capability Based Handover • HSPA Inter frequency Handover
Done during Call Setup
GSM GSM
Sector 1 Sector 3Sector 2
AMR+R99+HS
AMR+R99+HS AMR+R99+HSAMR+R99+HS
AMR+R99+HS AMR+R99+HS
Neighbour Definition Strategy
F2: HSDPA+R99
F1: AMR+R99
GSM
HSDPA+R99
GSM
F2: ADJS and ADJI
F1: ADJS and ADJG
F3: ADJW and ADCEAlready Existed in the network. No Need to Modify
Need to be defined
Sector 1 Sector 3Sector 2
AMR+R99
Pros and Cons
• Pros:– The traffic behaviors of all services are controllable– HSDPA Codes Pre-emption is controllable.– Double HSDPA Capacity (2 HSDPA in both F1 and F2)– Better HSDPA Mobility in F1 – Simple Parameter Setting for Idle Mode– Simple Neighbour Definition
• Cons:– Consume more CE– No IFSO from F1 to F2 for a PS call when handover needed. The PS
call from F1 will hand off to GSM layer instead. ( One Way ADJI defined between F1 and F2). This could cause 3G throughput downgraded to GPRS speed.
Expectation Result
Acceptance KPI Expectation
HSDPA Throughput Improve or No degradation
Average reported CQI Improve or No degradation
HSDPA Traffic in F2 Increase
AVE_HSPA_DL_POWER (M1002C238) Increase
FACH to DCH from Non-HSPA to HSPA Layer (M1002C512) Active (Increase)
RRC CONN SETUP COMPLETED AFTER DIRECTED (M1001C259) Active (Increase)
DCH ALLO FOR SIG LINK FROM NON-HSPA TO HSPA LAYER(M1002C509 ) Active (Increase)
HSDPA Accessibility Stable
HSDPA Retainability Stable
CSSR/ Drop Call of R99 Services No degradation
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Appendix: 2nd Carrier Related Features Documents
Microsoft PowerPoint Presentation
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End of Report