Het nets up close - Webinar with ThinkSmallCell and IXIA
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Slides from joint webinar by ThinkSmallCell and IXIA outlining the progress towards HetNets using Small Cells and the solution testing scenarios and capabilities required

Slides from joint webinar by ThinkSmallCell and IXIA outlining the progress towards HetNets using Small Cells and the solution testing scenarios and capabilities required

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Het nets up close - Webinar with ThinkSmallCell and IXIA Het nets up close - Webinar with ThinkSmallCell and IXIA Presentation Transcript

  • HetNets  Up  Close:   Adding  Small  Cells  to  the  mix   Webinar  25  March  2014   David  Chambers   Rahul  Iyer  
  • Agenda   •  Market  evoluAon  of  Small  Cells   •  DensificaAon  of  mobile  networks   •  Technical  challenges   •  Example  use  cases  of  tesAng   •  Conclusion  
  • Market  Driver  for  HetNets   •  >50%  CAGR  for  Mobile   data   •  High  density  deployments   (urban  and  enterprise)   •  Poor  in  building  coverage   CoordinaAng  Small  Cells  with  Macrocells,  sharing  same  frequencies  =  HetNet     Best  of  both  worlds     •  3GPP  workshop[1]  on  how  best   to  grow  capacity     [1]  June  2012:  hUp://www.3gpp.org/Future-­‐Radio-­‐in-­‐3GPP-­‐300-­‐aUend    
  • 4   The  different  categories  of  small  cells   Enterprise  Residen,al   Urban   Rural   Small  Cells   Small  Cells  Femtocells   OR  
  • 5   3G   Licensed   Spectrum   4G/LTE   Licensed   Spectrum   Unlicensed   Spectrum   Planned   (locaAon  pre-­‐determined   prior  to  site  build)   Unplanned   (locaAon  unknown  unAl   operaAonal)   Planned  vs  Unplanned   Carrier     Wi-­‐Fi   Enterprise   Wi-­‐Fi   ResidenAal   Wi-­‐Fi   LTE   Urban   Enterprise   Femtocells   ResidenAal   Femtocells   3G  Rural   Small  cells   3G  Urban   ResidenAal   Femtocells   Enterprise   Femtocells  
  • 6   Four  ways  of  network  densificaAon   Macrocell   Sector  Spli=ng     Physical  antenna     Dedicated   macrocell   hardware   Remote  Radio   Heads     Physical  antenna     Dedicated   macrocell   hardware     2Gbps  link   between   macrocell  &   radio  head   Distributed  Antenna   System  (DAS)     Pipes  the  RF  signal   around  a  building.       Typically  needs  dark   fibre,  remote   antenna  and   macrocell.       Can  be  shared   between  operators   Small  Cells       Shrinks  full   basestaAon   capability  onto  a   chip.  Requires  IP   connecAon  for   backhaul.     OpAonally,  local   controller   opAmises  between   mulAple  cells  
  • 7   Enterprise  Small  Cells   Technology:  Mostly  3G,  few  LTE,  evolving  to  mulAmode  3G/LTE/Wi-­‐Fi   Higher  RF  power  =  range  and  capacity  =  more  calls   CompaAble  with  all  3G  smartphones.     Tens  of  operators  live  today,  some  scaling  to  10K’s  of  sites     Primary  focus  is  on  deployment  speed  and  business  model.   Stronger  drive  for  3G  voice  than  data     Likely  to  be  largest  revenue  driver  in  short  term,  because  can  be  quickly   deployed.  Buys  loyalty  from  building  owner,  opAon  for  addiAonal  services.     Ideal  equipment  is  powered  and  backhauled  via  Ethernet.   Enterprise  
  • Different  sizes  require  soluAons   10-­‐49  employees   50-­‐249  employees   250+  employees   <9  employees   8  User  Standalone  Femtocell   MulAple  16  User  small  cells   16  User  Standalone  Small  cell   Distributed  Antenna  System   Group  of  small  cells  with  local   controller   10-­‐49  employees   50-­‐249  employees   250+  employees   50-­‐249  employees   250+  employees  250+  employees   8  
  • 9   Urban  Small  Cells   Previously  named  “Metrocells”  and/or  “Picocells”     Technology:  Most  focus  on  4G  LTE   Much  higher  RF  power  =  range;  higher  capacity  =  more  calls/data     Expected  ramp-­‐up  of  LTE  or  3G/LTE  during  late  2014/2015     Primary  focus  is  site  acquisiAon,  deployment  process,  backhaul   Stronger  drive  for  data  capacity  in  dense  urban  areas   More  criAcal  to  those  operators  with  limited  spectrum     Likely  to  be  largest  revenue  driver  in  longer  term,  because  of  wider  range  of   tools,  skillsets,  capabiliAes  required.     Ideal  equipment  is  street  mounted  and  backhauled  via  wired  or  wireless  short   haul  link  to  nearby  hub/macrocell.  Low  maintenance  =  low  TCO  criAcal.   Urban  
  • DensificaAon  Strategy   Make  most  of  exisAng  macrocell  sites   •  Expand  to  use  all  available  spectrum   •  Add  LTE,  refarm  2G/3G  to  3G/LTE   •  Expand  sectors  and/or  remote  radio  heads   IdenAfy  and  resolve  in-­‐building  issues   •  Deploy  suitable  soluAons  for   large/small  buildings   •  Add  microcells  in  high  traffic/poor   coverage  areas  (2-­‐5W  RF  power)   •  Add  further  smaller  cells  to  match   traffic/usage  demand  (0.25-­‐2W  RF)  
  • HetNets  involve  a  wider  ecosystem   •  Deployment:     –  Site  acquisiAon,  installaAon,  project  management,   provisioning   •  Opera,ons:     –  Planning  tools,  SON  (Self-­‐Organising  Networks),   Performance  Management,  Geo-­‐locaAon   •  Test  and  Valida,on:     –  De-­‐risking  prior  to  deployment,  simulaAng   network  condiAons,  troubleshooAng,  opAmising   •  Services:     –  Business  case,  partnerships,  outsourcing  
  • Small  Cell  Forecast   §  Residential  Femtocells—not  a  compelling  ROI  for  operators   §  Enterprise  Small  Cells  will  grow  with  new  business  models   §  Big  potential  but  slow  growth  due  to  a  new  business  model   §  Carrier-­‐deployed  Small  Cells  will  grow  along  with  data  demand   Annual  
  • Summary   •  Small  Cells  are  mature,  proven  technology   •  Can  deliver  the  capacity  and  performance  when  tradiAonal   methods  exhausted   •  Requires  a  different  deployment  approach   –  Scale:  More  automaAon,  simpler  installaAon   •  Wider  eco-­‐system  becoming  involved  
  • EssenAal  Steps  to  Successful  Deployments   HetNets  Up-­‐close   25  March  2014  
  • 15   •  Major  LTE  carriers  have  announced  small  cell  plans           •  Carrier  rollouts  have  been  slow,  so  far   •  “4G  LTE”  key  access  tech.  –  high  lab  test  acAvity   HetNet  Market  Status   Source:  Mobile  Experts  -­‐  hOp://www.mobile-­‐experts.net/  Annual  
  • 16   Challenges   Infrastructure   Small  Cells   Gateways  (eNB,  LGW,  Offload)   LTE  –  Wi-­‐Fi  Convergence   SON   LogisAcal   100s  of  Use  cases   Zoning/Permissions   Backhaul   BSS  system  and  process  
  • HetNet  Topology   S1   S1-­‐u   S5   HeNB-­‐GW   MME  Pool   SGW   PGW   HSS  DRA   PCRF   PDN  -­‐  www   S1-­‐mme   SGi   Small  cells   3g/4g/Wi-­‐Fi   OSS  (C-­‐SON)   D-­‐SON   Wi-­‐Fi-­‐GW     S2a  
  • HetNet  Topology   S1   S1-­‐u   S5   HeNB-­‐GW   MME  Pool   SGW   PGW   HSS  DRA   PCRF   PDN  -­‐  www   S1-­‐mme   SGi   Small  cells   3g/4g/Wi-­‐Fi   LGW   Private  Cloud   OSS  (C-­‐SON)   D-­‐SON   Wi-­‐Fi-­‐GW     S2a  
  • 19   Infrastructure   Network  EvoluAon   New  devices  (Small  cells,  GWs)   MulA-­‐layer  (Macro,  small  cell)   SON  (C-­‐SON,  D-­‐SON)   Backhaul     Challenges   Order  of  magnitude,  topology   changes   Mobility,  Interference   Great  power,  Great   Responsibility   Planning  and  OpAmizaAon  
  • 20   Valida,ng  Small  Cells   •  Evaluate  funcAonality   –  Scheduler,  Handover,  Bearer,  Paging,  etc.   •  Test  under  real  network  configuraAon   –  Interop,  load,  subscriber  models   •  LTE-­‐Wi-­‐Fi  convergence   –  Load  balancing,  Wi-­‐Fi  handover   S1   S1-­‐u   S5   HeNB-­‐GW   MME  Pool   SGW   HSS  DRA   PCRF   PDN  -­‐  www   S1-­‐mme   SGi   Small  cells   3g/4g/Wi-­‐Fi   PGW   Wi-­‐Fi  GW   S2a  
  • 21   Valida,ng  Small  Cells   SON-­‐eICIC   •  Surround  eNodeB  on  Uu  and  X2   •  Simulate  interference     –  Neighbor  cell  interference  over  X2   –  UL  interference  over  Uu   •  Measure  eNodeB  compensaAon  factor   UE  SIM   Uu   X2   DUT     (source  cell)   Ixia   (target  cell)   1.  Simulate   interference   Configure   •  UL  Interference   •  RNTP     •  ABS       1.  Validate   impact  on  UEs   2.  X2  Load  Indica,on   2.  Simulate  UL   Interference   2.  Evaluate  Load   Indica,on  
  • 22   Valida,ng  Small  Cells   SON-­‐MLB   •  AutomaAc  load  balancing  based  on  “triggers”   –  Cell  configuraAon  updated  in  real  Ame   •  Validate  and  measure  funcAonality   –  Success  rate,  opAmizaAon  latency   •  Test  under  unique  real  world  condiAons   –  Loaded  neighbor  cell,  Several  target  cells     UE  SIM   Uu   X2   DUT     (source  cell)   Ixia   (target  cell)   Adjust  Cell   Reselec,on  Param.   Renego,ate   Handover  threshold   Load  based  HO   Request   HO  Success  
  • 23   eNodeB  GW  Tes,ng   •  Evaluate  eNodeB-­‐GW  funcAonality   –  Paging  OpAmizaAon,  NNSF,  LIPA,  SIPTO  etc.   •  Model  and  Validate  different  deployment  scenarios   –  eNB-­‐GW  as  MME  Proxy,  eNB-­‐GW  as  MME  and  SGW  Proxy  etc.   •  Evaluate  eNodeB-­‐GW  performance     –  Under  high  load  (10000s  eNodeB  1000000s  Subs)   –  IPSec   S1   S1-­‐u   S5   HeNB-­‐GW   MME  Pool   SGW   HSS  DRA   PCRF   PDN  -­‐  www   S1-­‐mme   SGi   Small  cells   3g/4g/Wi-­‐Fi   PGW   Wi-­‐Fi  GW   S2a  
  • 24   Wi-­‐Fi  Offload  GW   Tes,ng   Gi Ww Wi-Fi AP UE PCRF IP Services IXIA SUT IXIA Emulated Interface Internal Interface Traffic Path Wi-Fi-GW Network  Emula,on  Wi-­‐Fi  Access   •  Validate  Wi-­‐Fi  GW  FuncAonality   –  AuthenAcaAon,  Interop  etc.   •  Load,  stress  GW  and  measure  QoE   –  PMIPv6,  GRE,  GTPv1   AAA PGW GGSN 4G 3G S2a
  • 25   Backhaul  Tes,ng   •  Model  backhaul  through  impairment     –  Simulate  DSL,  Microwave,  Fibre,  NLOS  etc.   •  OpAmize  price/performance  –  QoE   •  Determine  exact  backhaul  configuraAon   S1   S1-­‐u   S5   HeNB-­‐GW   MME  Pool   SGW   PGW   HSS  DRA   PCRF   PDN  -­‐  www   S1-­‐mme   SGi   Small  cells   3g/4g/Wi-­‐Fi   Wi-­‐Fi   Controller   S2a   Impaired  Link  
  • 26   Summary   •  HetNets  are  crucial  to  meeAng  the   growing  demand  for  wireless  data   services   •  HetNets  require  new  technologies   to  handle  vastly  larger  numbers  of   cells   •  ValidaAng  new  techniques  and   technologies  is  going  to  be   challenging   •  Lab  and  field  tesAng  with  purpose-­‐ built  equipment  will  be  an  essenAal   ingredient  for  success   •  Book:  hetnet.ixiacom.com   •  For  more  informaAon:   ixiacom.com/soluAons/hetnet-­‐test  
  • Thank  you   Q&A