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THE MESHDYNAMICS MD4000 IS THE IDEAL MESH NODE FOR VIDEO
AND SURVEILLANCE APPLICATIONS. ITS COMPACT SIZE ALONG WITH
SUPERIOR TECHNOLOGY AND EASE OF USE MAKE FOR A SWIFT
INSTALLATION AND EFFORTLESS OPERATION.

VIDEO APPLICATIONS TEND TO BE BANDWIDTH-INTENSIVE. MANY
WIRELESS SYSTEMS SUFFER FROM JITTERY VIDEO DUE TO LACK OF
AVAILABLE BANDWIDTH TRANSFERRED ACROSS THE BACKHAUL. THE
MD4000 USES THIRD GENERATION MESH TECHNOLOGY TO MAINTAIN
BANDWIDTH OVER NUMEROUS HOPS WITHOUT DEGRADATION.




            COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE THIRD GENERATION BACKHAUL OF THE MD4000 USES MULTIPLE
 CHANNELS SIMULTANEOUSLY WITHIN THE UTILIZED SPECTRUM IN ORDER
 TO ENSURE MINIMAL BANDWIDTH LOSS AS THE NUMBER OF HOPS
 INCREASES.

 TYPICALLY, THE 5GHz SPECTRUM IS USED FOR THE BACKHAUL. SINCE
 DIFFERENT 5GHz CHANNELS ARE USED BY ADJACENT LINKS IN THE MESH,
 THERE IS NO INTERFERENCE ALONG THE BACKHAUL. THIS ALLOWS EACH
 NODE TO SEND AND RECEIVE AT THE SAME TIME. THEREFORE
 CONSERVING BANDWIDTH OVER MANY HOPS.

 ROOT
 NODE




 SEND/      SEND/                   SEND/                           SEND/                         SEND/           SEND/
RECEIVE    RECEIVE                 RECEIVE                         RECEIVE                       RECEIVE         RECEIVE


              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
FIRST AND SECOND GENERATION MESH NODES USE ONLY ONE CHANNEL
OF A CERTAIN FREQUENCY SPECTRUM ACROSS ALL LINKS OF A BACKHAUL
DURING OPERATION.

A NODE IN THE MESH CANNOT SEND AND RECEIVE AT THE SAME TIME
SINCE THE SAME FREQUENCY IS USED FOR BOTH FUNCTIONS. THIS MAKES
FOR A VERY INEFFICIENT PROCESS THAT SEVERELY EFFECTS BANDWIDTH
AS THE NUMBER OF HOPS INCREASES. THE NUMBER OF CAMERAS THAT
CAN BE INSTALLED ONTO A NETWORK IS THEREFORE LIMITED.

VIDEO APPLICATIONS CAN START TO ENCOUNTER ISSUES AFTER ONLY A
FEW HOPS IN FIRST AND SECOND GENERATION MESHES.

  ROOT
  NODE

  NODE      NODE                        NODE                          NODE                         NODE         NODE




  SEND      RECEIVE

             COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
FIRST AND SECOND GENERATION MESH NODES USE ONLY ONE CHANNEL
OF A CERTAIN FREQUENCY SPECTRUM ACROSS ALL LINKS OF A BACKHAUL
DURING OPERATION.

A NODE IN THE MESH CANNOT SEND AND RECEIVE AT THE SAME TIME
SINCE THE SAME FREQUENCY IS USED FOR BOTH FUNCTIONS. THIS MAKES
FOR A VERY INEFFICIENT PROCESS THAT SEVERELY EFFECTS BANDWIDTH
AS THE NUMBER OF HOPS INCREASES. THE NUMBER OF CAMERAS THAT
CAN BE INSTALLED ONTO A NETWORK IS THEREFORE LIMITED.

VIDEO APPLICATIONS CAN START TO ENCOUNTER ISSUES AFTER ONLY A
FEW HOPS IN FIRST AND SECOND GENERATION MESHES.

  ROOT
  NODE

  NODE      NODE                        NODE                          NODE                         NODE         NODE




             SEND                    RECEIVE

             COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
ALTHOUGH MESHDYNAMICS THIRD GENERATION MESH NODES
TYPICALLY USE THE 5GHz SPECTRUM FOR THE MULTI-CHANNEL
BACKHAUL, THE 2.4GHz SPECTRUM AND THE 4.9GHz PUBLIC SAFETY
BAND CAN ALSO BE USED.

THE 5GHz SPECTRUM IS USED MAINLY FOR TWO REASONS: THERE IS
MORE AVAILABLE CHANNEL SPACE IN THIS SPECTRUM ALLOWING FOR
THE MOST NUMBER OF CHANNELS TO BE USED, AND BECAUSE IT IS A
RELATIVELY CLEAN RF SPACE WHICH CATERS TO SMOOTH, GLITCH-
FREE VIDEO.

THE 2.4GHz SPECTRUM IS USUALLY USED FOR THE BACKHAUL IN
RURAL AREAS WHERE GREAT DISTANCES ARE NEEDED, AND THE RF
POLLUTION IS MUCH LIGHTER THAN IN CIVILIZED AREAS.

THE 4.9GHz PUBLIC SAFTEY BAND IS A LICENSED BAND RESERVED FOR
POLICE AND EMERGENCY SERVICES.




             COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE RIGHT-HAND ETHERNET PORT ON THE MD4000 MESH NODE SERVES AS
SWITCH PORT TO NETWORK DEVICES. THE DATA FROM CLIENTS OR DEVICES
CONNECTED TO THIS PORT WILL BE SENT WIRELESSLY THROUGH THE MESH
TO THE MAIN NETWORK.

THE MOST BASIC WAY TO CREATE A WIRELESS SURVEILENCE SYSTEM USING
THE MD4000 IS TO SIMPLY CONNECT AN IP CAMERA TO THE RIGHT-HAND
ETHERNET PORT ON THE MESH NODE.




              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE RIGHT-HAND ETHERNET PORT ON THE MD4000 MESH NODE SERVES AS
SWITCH PORT TO NETWORK DEVICES. THE DATA FROM CLIENTS OR DEVICES
CONNECTED TO THIS PORT WILL BE SENT WIRELESSLY THROUGH THE MESH
TO THE MAIN NETWORK.

THE MOST BASIC WAY TO CREATE A WIRELESS SURVEILENCE SYSTEM USING
THE MD4000 IS TO SIMPLY CONNECT AN IP CAMERA TO THE RIGHT-HAND
ETHERNET PORT ON THE MESH NODE.

                                                                                        RELAY NODE
          ROOT NODE

                                                                                                    mesh
                                                                                                    dynanmics
               mesh
               dynanmics




NETWORK                                                                                                          IP CAMERA


              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
IF MULTIPLE CAMERAS ARE NEEDED ON A SINGLE NODE, CONNECT A SWITCH
TO THE RIGHT-HAND ETHERNET PORT, THEN CONNECT THE DESIRED
NUMBERS OF CAMERAS TO THE SWITCH.


                                                                                        RELAY NODE
          ROOT NODE

                                                                                                    mesh
                                                                                                    dynanmics
               mesh
               dynanmics




                                                                                                           SWITCH
NETWORK




                                                                                                  IP CAMERA         IP CAMERA

              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
TO DETERMINE THE MAXIMUM NUMBER OF CAMERAS THAT CAN BE INSTALLED
ONTO A NETWORK, CAMERA SETTINGS MUST FIRST BE TAKEN INTO ACCOUNT.

THE SETTINGS OF A CAMERA EFFECT HOW MUCH BANDWIDTH THE CAMERA WILL
REQUIRE. THERE ARE SEVERAL SETTINGS THAT CAN BE APPLIED TO CAMERAS
SUCH AS FRAME RATE, RESOLUTION, AND COMPRESSION TO NAME A FEW.

THE TABLE BELOW GIVES BANDWIDTH VALUES FOR SOME COMMON CAMERA
SETTINGS (640 x 480 RESOLUTION, MPEG4-30) WITH VARYING FRAME RATES.



BANDWIDTH
             1.4
CONSUMED     1.2
             1.0
(Mbps)       0.8
             0.6
FRAME SIZE   0.4
    10KB     0.2
    9KB
    8KB
    7KB                                            10            20                                                   30
    6KB                                          (FRAMES PER SECOND)
                   COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE 802.11a PROTOCOL, WHICH IS USED BY THE 5GHz BACKHAUL, CAN
SUPPORT ROUGHLY 22Mbps OF THROUGHPUT ON EACH OF ITS NON-
OVERLAPPING CHANNELS. IF A CAMERA IS SET TO CONSUME 1Mbps OF
THROUGHPUT, THIS IMPLIES THAT AN 802.11a LINK CAN SUPPORT THE
BANDWIDTH NEEDED BY 22 SUCH CAMERAS. TYPICALLY, THE NUMBER
OF CAMREAS IS CUT BACK SLIGHTLY TO ALLOW FOR OTHER WIRELESS
OVERHEAD ON THE LINK.


IN ADDITION TO THE MULTI-CHANNEL, 3RD GENERATION BACKHAUL
OF THE MD4000 WHICH ENABLES IT TO CARRY THIS 22Mbps OVER
NUMEROUS HOPS WITHOUT BANDWIDTH DEGRADATION, THE MD4000
OFFERS FEATURES THAT CAN EVEN FURTHER INCREASE THE
AVAILABLE BANDWIDTH ON THE NETWORK: BONDED CHANNEL
TECHNOLOGY, AND MULTIPLE DOWNLINK RADIOS.




             COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
BONDED CHANNEL TECHNOLOGY USES TWICE THE CHANNEL WIDTH AS
STANDARD 802.11a/g CHANNELS (WHICH ARE TYPICALLY 20MHz WIDE),
BUT GIVES TWICE THE THROUGHPUT OF THE STANDARD CHANNELS. A
LINK USING BONDED CHANNEL TECHNOLOGY SUPPORTS
APPROXIMATELY 44Mbps OF THROUGHPUT.



                                                                                                 22Mbps
       20MHz WIDE



                                         OFDM
                                     CHANNEL MASK


         5745 MHz                              5785 MHz                                           5825 MHz

             COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
BONDED CHANNEL TECHNOLOGY USES TWICE THE CHANNEL WIDTH AS
STANDARD 802.11a/g CHANNELS (WHICH ARE TYPICALLY 20MHz WIDE),
BUT GIVES TWICE THE THROUGHPUT OF THE STANDARD CHANNELS. A
LINK USING BONDED CHANNEL TECHNOLOGY SUPPORTS
APPROXIMATELY 44Mbps OF THROUGHPUT.




   40MHz WIDE
                                                                                              44Mbps
                                         OFDM
                                     CHANNEL MASK


         5745 MHz                              5785 MHz                                           5825 MHz

             COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
MULTIPLE DOWNLINK RADIOS WILL GIVE A MESH MULTIPLE 22Mbps
 SOURCES OF BANDWIDTH. EACH DOWNLINK RADIO ON A ROOT NODE
 WILL PROVIDE A SEPARATE CHANNEL FOR RELAY NODES TO
 ASSOCIATE TO. WITH THE APPROPRIATE USE OF SECTOR ANTENNAS,
 THE MULTIPLE SOURCES OF BANDWIDTH CAN BE DISTRIBUTED
 ACROSS THE MESH.


                  DOWNLINK
                                                                                                            Chn. B
                   ANTENNA                                                                               ( 22Mbps )           DOWNLINK
                                                                Chn. A                                                         ANTENNA
                                                             ( 22Mbps )                                                         SIGNAL
                                                                                                                                SPREAD

                                                                                      ROOT
DOWNLINK                                                                              NODE
 ANTENNA
                                                                                                                        Chn. B
                  DOWNLINK
                                                                                                                       ( 22Mbps )
                   ANTENNA                          DOWNLINK                                  DOWNLINK
                                                     ANTENNA                                   ANTENNA
           ROOT                                       SIGNAL                                    SIGNAL
           NODE
                                                      SPREAD                                    SPREAD

                    COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE DIAGRAM BELOW ILLUSTRATES HOW DIFFERENT GROUPS OF RELAY
NODES GET THEIR OWN 22Mbps SOURCE OF BANDWIDTH FROM EACH OF
THE ROOT NODE’S DOWNLINKS. ANTENNA SPREADS ARE SELECTED
BASED ON THE LOCAL DISTRIBUTION OF RELAY NODES.
THREE DOWNLINK RADIOS ARE USED IN THIS EXAMPLE.
                                                                                                                ROOT NODE

                                                                                                                RELAY NODE

                                                                                                                 DOWNLINK
                                                                                                                  ANTENNA
                                                                                                                   SIGNAL
                                                                                                                  SPREADS

                                                                                                                CAMERA




             COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
WHILE OTHER VENDORS OFFER ONLY A SINGLE DOWNLINK RADIO
ON THE ROOT NODE, WHICH CAN SEVERELY LIMIT THE NUMBER OF
CAMERAS THAT CAN BE INSTALLED ON A NETWORK, THE ABILITY OF
THE MD4000 TO UTILIZE MULTIPLE DOWNLINK RADIOS
ALLOWS FOR A SUBSTANTIAL INCREASE IN THE
NUMBER OF NETWORK CAMERAS.                             ROOT NODE

                                                                                                                 RELAY NODE

                                                                                                                  DOWNLINK
                                                                                                                   ANTENNA
                                                                                                                    SIGNAL
                                                                                                                   SPREADS

                                                                                                                 CAMERA




              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE BENEFIT OF MULTIPLE DOWNLINK RADIOS CAN ALSO BE APPLIED TO RELAY
NODES. A RELAY NODE’S UPLINK THAT HAS A BONDED-CHANNEL CONNECTION
(44Mbps) CAN PROVIDE SEPARATE DOWNLINK CONNECTIONS OF 22Mbps TO
DIFFERENT GEOGRAPHICAL LOCATIONS. THIS IS ESPECIALLY HELPFUL WHEN
THERE ARE NODE CLUSTERS AND SURVEILLANCE AREAS ARE THAT ARE NON-
LINE-OF-SITE FROM THE ROOT NODE.



  ROOT
  NODE



                               (downlink antenna)




                                                                        s
                                                                      bp
           44                                                                                                    MOUNTAIN
             M
                                                                M
                 bp                                           22
                   s


                                                                     22Mbps
                                       RELAY
                                       NODE
              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE BENEFIT OF MULTIPLE DOWNLINK RADIOS CAN ALSO BE APPLIED TO RELAY
NODES. A RELAY NODE’S UPLINK THAT HAS A BONDED-CHANNEL CONNECTION
(44Mbps) CAN PROVIDE SEPARATE DOWNLINK CONNECTIONS OF 22Mbps TO
DIFFERENT GEOGRAPHICAL LOCATIONS. THIS IS ESPECIALLY HELPFUL WHEN
THERE ARE NODE CLUSTERS AND SURVEILLANCE AREAS ARE THAT ARE NON-
LINE-OF-SITE FROM THE ROOT NODE.



  ROOT
                       MOUNTAIN
  NODE                                                                                   node
                                                                                          Cluster




                                                                        s
                                                                      bp
           44                                                                                                    MOUNTAIN
             M
                                                                M
                 bp                                           22
                   s

                                                                                                                 node
                                       RELAY
                                                                     22Mbps                                       cluster
MOUNTAIN                               NODE
              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE COMBINATION OF THE THIRD GENERATION BACKHAUL AND SEAMLESS
NODE-TO-NODE SWITCHING MAKE THE MD4000 MOBILE NODES IDEAL FOR
MOBILE VIDEO APPLICATIONS.

THE MD4000 HAS BEEN TESTED AT 65Mph WHILE SENDING GLITCH-FREE VIDEO
OVER 5 HOPS. DURING THIS TEST, AN AVERAGE OF 10Mbps OF THROUGHPUT
WAS MEASURED. THE CONNECTIVITY OF THE MOBILE NODE WAS SET AT
24Mbps IN ORDER TO UTILIZE THE ROBUST 16-QAM MODULATION SCHEME.

     ROOT
     NODE




              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE COMBINATION OF THE THIRD GENERATION BACKHAUL AND SEAMLESS
NODE-TO-NODE SWITCHING MAKE THE MD4000 MOBILE NODES IDEAL FOR
MOBILE VIDEO APPLICATIONS.

THE MD4000 HAS BEEN TESTED AT 65Mph WHILE SENDING GLITCH-FREE VIDEO
OVER 5 HOPS. DURING THIS TEST, AN AVERAGE OF 10Mbps OF THROUGHPUT
WAS MEASURED. THE CONNECTIVITY OF THE MOBILE NODE WAS SET AT
24Mbps IN ORDER TO UTILIZE THE ROBUST 16-QAM MODULATION SCHEME.




IP CAMERA


              COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
THE COMBINATION OF THE THIRD GENERATION BACKHAUL AND SEAMLESS
  NODE-TO-NODE SWITCHING MAKE THE MD4000 MOBILE NODES IDEAL FOR
  MOBILE VIDEO APPLICATIONS.

  THE MD4000 HAS BEEN TESTED AT 65Mph WHILE SENDING GLITCH-FREE VIDEO
  OVER 5 HOPS. DURING THIS TEST, AN AVERAGE OF 10Mbps OF THROUGHPUT
  WAS MEASURED. THE CONNECTIVITY OF THE MOBILE NODE WAS SET AT
  24Mbps IN ORDER TO UTILIZE THE ROBUST 16-QAM MODULATION SCHEME.

  Throughput
         21.00
         18.00
         15.00

         12.00
(Mbps)   9.00

         6.00

         3.00
         0.00
           00:00   00:50        01:40            02:30           03:20           04:10           05:00           05:50   06:40   07:50

                                              Elapsed Time (mm:ss)
                    COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS

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MeshDynamics Mesh Networks - Video Surveillance

  • 1. THE MESHDYNAMICS MD4000 IS THE IDEAL MESH NODE FOR VIDEO AND SURVEILLANCE APPLICATIONS. ITS COMPACT SIZE ALONG WITH SUPERIOR TECHNOLOGY AND EASE OF USE MAKE FOR A SWIFT INSTALLATION AND EFFORTLESS OPERATION. VIDEO APPLICATIONS TEND TO BE BANDWIDTH-INTENSIVE. MANY WIRELESS SYSTEMS SUFFER FROM JITTERY VIDEO DUE TO LACK OF AVAILABLE BANDWIDTH TRANSFERRED ACROSS THE BACKHAUL. THE MD4000 USES THIRD GENERATION MESH TECHNOLOGY TO MAINTAIN BANDWIDTH OVER NUMEROUS HOPS WITHOUT DEGRADATION. COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 2. THE THIRD GENERATION BACKHAUL OF THE MD4000 USES MULTIPLE CHANNELS SIMULTANEOUSLY WITHIN THE UTILIZED SPECTRUM IN ORDER TO ENSURE MINIMAL BANDWIDTH LOSS AS THE NUMBER OF HOPS INCREASES. TYPICALLY, THE 5GHz SPECTRUM IS USED FOR THE BACKHAUL. SINCE DIFFERENT 5GHz CHANNELS ARE USED BY ADJACENT LINKS IN THE MESH, THERE IS NO INTERFERENCE ALONG THE BACKHAUL. THIS ALLOWS EACH NODE TO SEND AND RECEIVE AT THE SAME TIME. THEREFORE CONSERVING BANDWIDTH OVER MANY HOPS. ROOT NODE SEND/ SEND/ SEND/ SEND/ SEND/ SEND/ RECEIVE RECEIVE RECEIVE RECEIVE RECEIVE RECEIVE COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 3. FIRST AND SECOND GENERATION MESH NODES USE ONLY ONE CHANNEL OF A CERTAIN FREQUENCY SPECTRUM ACROSS ALL LINKS OF A BACKHAUL DURING OPERATION. A NODE IN THE MESH CANNOT SEND AND RECEIVE AT THE SAME TIME SINCE THE SAME FREQUENCY IS USED FOR BOTH FUNCTIONS. THIS MAKES FOR A VERY INEFFICIENT PROCESS THAT SEVERELY EFFECTS BANDWIDTH AS THE NUMBER OF HOPS INCREASES. THE NUMBER OF CAMERAS THAT CAN BE INSTALLED ONTO A NETWORK IS THEREFORE LIMITED. VIDEO APPLICATIONS CAN START TO ENCOUNTER ISSUES AFTER ONLY A FEW HOPS IN FIRST AND SECOND GENERATION MESHES. ROOT NODE NODE NODE NODE NODE NODE NODE SEND RECEIVE COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 4. FIRST AND SECOND GENERATION MESH NODES USE ONLY ONE CHANNEL OF A CERTAIN FREQUENCY SPECTRUM ACROSS ALL LINKS OF A BACKHAUL DURING OPERATION. A NODE IN THE MESH CANNOT SEND AND RECEIVE AT THE SAME TIME SINCE THE SAME FREQUENCY IS USED FOR BOTH FUNCTIONS. THIS MAKES FOR A VERY INEFFICIENT PROCESS THAT SEVERELY EFFECTS BANDWIDTH AS THE NUMBER OF HOPS INCREASES. THE NUMBER OF CAMERAS THAT CAN BE INSTALLED ONTO A NETWORK IS THEREFORE LIMITED. VIDEO APPLICATIONS CAN START TO ENCOUNTER ISSUES AFTER ONLY A FEW HOPS IN FIRST AND SECOND GENERATION MESHES. ROOT NODE NODE NODE NODE NODE NODE NODE SEND RECEIVE COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 5. ALTHOUGH MESHDYNAMICS THIRD GENERATION MESH NODES TYPICALLY USE THE 5GHz SPECTRUM FOR THE MULTI-CHANNEL BACKHAUL, THE 2.4GHz SPECTRUM AND THE 4.9GHz PUBLIC SAFETY BAND CAN ALSO BE USED. THE 5GHz SPECTRUM IS USED MAINLY FOR TWO REASONS: THERE IS MORE AVAILABLE CHANNEL SPACE IN THIS SPECTRUM ALLOWING FOR THE MOST NUMBER OF CHANNELS TO BE USED, AND BECAUSE IT IS A RELATIVELY CLEAN RF SPACE WHICH CATERS TO SMOOTH, GLITCH- FREE VIDEO. THE 2.4GHz SPECTRUM IS USUALLY USED FOR THE BACKHAUL IN RURAL AREAS WHERE GREAT DISTANCES ARE NEEDED, AND THE RF POLLUTION IS MUCH LIGHTER THAN IN CIVILIZED AREAS. THE 4.9GHz PUBLIC SAFTEY BAND IS A LICENSED BAND RESERVED FOR POLICE AND EMERGENCY SERVICES. COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 6. THE RIGHT-HAND ETHERNET PORT ON THE MD4000 MESH NODE SERVES AS SWITCH PORT TO NETWORK DEVICES. THE DATA FROM CLIENTS OR DEVICES CONNECTED TO THIS PORT WILL BE SENT WIRELESSLY THROUGH THE MESH TO THE MAIN NETWORK. THE MOST BASIC WAY TO CREATE A WIRELESS SURVEILENCE SYSTEM USING THE MD4000 IS TO SIMPLY CONNECT AN IP CAMERA TO THE RIGHT-HAND ETHERNET PORT ON THE MESH NODE. COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 7. THE RIGHT-HAND ETHERNET PORT ON THE MD4000 MESH NODE SERVES AS SWITCH PORT TO NETWORK DEVICES. THE DATA FROM CLIENTS OR DEVICES CONNECTED TO THIS PORT WILL BE SENT WIRELESSLY THROUGH THE MESH TO THE MAIN NETWORK. THE MOST BASIC WAY TO CREATE A WIRELESS SURVEILENCE SYSTEM USING THE MD4000 IS TO SIMPLY CONNECT AN IP CAMERA TO THE RIGHT-HAND ETHERNET PORT ON THE MESH NODE. RELAY NODE ROOT NODE mesh dynanmics mesh dynanmics NETWORK IP CAMERA COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 8. IF MULTIPLE CAMERAS ARE NEEDED ON A SINGLE NODE, CONNECT A SWITCH TO THE RIGHT-HAND ETHERNET PORT, THEN CONNECT THE DESIRED NUMBERS OF CAMERAS TO THE SWITCH. RELAY NODE ROOT NODE mesh dynanmics mesh dynanmics SWITCH NETWORK IP CAMERA IP CAMERA COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 9. TO DETERMINE THE MAXIMUM NUMBER OF CAMERAS THAT CAN BE INSTALLED ONTO A NETWORK, CAMERA SETTINGS MUST FIRST BE TAKEN INTO ACCOUNT. THE SETTINGS OF A CAMERA EFFECT HOW MUCH BANDWIDTH THE CAMERA WILL REQUIRE. THERE ARE SEVERAL SETTINGS THAT CAN BE APPLIED TO CAMERAS SUCH AS FRAME RATE, RESOLUTION, AND COMPRESSION TO NAME A FEW. THE TABLE BELOW GIVES BANDWIDTH VALUES FOR SOME COMMON CAMERA SETTINGS (640 x 480 RESOLUTION, MPEG4-30) WITH VARYING FRAME RATES. BANDWIDTH 1.4 CONSUMED 1.2 1.0 (Mbps) 0.8 0.6 FRAME SIZE 0.4 10KB 0.2 9KB 8KB 7KB 10 20 30 6KB (FRAMES PER SECOND) COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 10. THE 802.11a PROTOCOL, WHICH IS USED BY THE 5GHz BACKHAUL, CAN SUPPORT ROUGHLY 22Mbps OF THROUGHPUT ON EACH OF ITS NON- OVERLAPPING CHANNELS. IF A CAMERA IS SET TO CONSUME 1Mbps OF THROUGHPUT, THIS IMPLIES THAT AN 802.11a LINK CAN SUPPORT THE BANDWIDTH NEEDED BY 22 SUCH CAMERAS. TYPICALLY, THE NUMBER OF CAMREAS IS CUT BACK SLIGHTLY TO ALLOW FOR OTHER WIRELESS OVERHEAD ON THE LINK. IN ADDITION TO THE MULTI-CHANNEL, 3RD GENERATION BACKHAUL OF THE MD4000 WHICH ENABLES IT TO CARRY THIS 22Mbps OVER NUMEROUS HOPS WITHOUT BANDWIDTH DEGRADATION, THE MD4000 OFFERS FEATURES THAT CAN EVEN FURTHER INCREASE THE AVAILABLE BANDWIDTH ON THE NETWORK: BONDED CHANNEL TECHNOLOGY, AND MULTIPLE DOWNLINK RADIOS. COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 11. BONDED CHANNEL TECHNOLOGY USES TWICE THE CHANNEL WIDTH AS STANDARD 802.11a/g CHANNELS (WHICH ARE TYPICALLY 20MHz WIDE), BUT GIVES TWICE THE THROUGHPUT OF THE STANDARD CHANNELS. A LINK USING BONDED CHANNEL TECHNOLOGY SUPPORTS APPROXIMATELY 44Mbps OF THROUGHPUT. 22Mbps 20MHz WIDE OFDM CHANNEL MASK 5745 MHz 5785 MHz 5825 MHz COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 12. BONDED CHANNEL TECHNOLOGY USES TWICE THE CHANNEL WIDTH AS STANDARD 802.11a/g CHANNELS (WHICH ARE TYPICALLY 20MHz WIDE), BUT GIVES TWICE THE THROUGHPUT OF THE STANDARD CHANNELS. A LINK USING BONDED CHANNEL TECHNOLOGY SUPPORTS APPROXIMATELY 44Mbps OF THROUGHPUT. 40MHz WIDE 44Mbps OFDM CHANNEL MASK 5745 MHz 5785 MHz 5825 MHz COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 13. MULTIPLE DOWNLINK RADIOS WILL GIVE A MESH MULTIPLE 22Mbps SOURCES OF BANDWIDTH. EACH DOWNLINK RADIO ON A ROOT NODE WILL PROVIDE A SEPARATE CHANNEL FOR RELAY NODES TO ASSOCIATE TO. WITH THE APPROPRIATE USE OF SECTOR ANTENNAS, THE MULTIPLE SOURCES OF BANDWIDTH CAN BE DISTRIBUTED ACROSS THE MESH. DOWNLINK Chn. B ANTENNA ( 22Mbps ) DOWNLINK Chn. A ANTENNA ( 22Mbps ) SIGNAL SPREAD ROOT DOWNLINK NODE ANTENNA Chn. B DOWNLINK ( 22Mbps ) ANTENNA DOWNLINK DOWNLINK ANTENNA ANTENNA ROOT SIGNAL SIGNAL NODE SPREAD SPREAD COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 14. THE DIAGRAM BELOW ILLUSTRATES HOW DIFFERENT GROUPS OF RELAY NODES GET THEIR OWN 22Mbps SOURCE OF BANDWIDTH FROM EACH OF THE ROOT NODE’S DOWNLINKS. ANTENNA SPREADS ARE SELECTED BASED ON THE LOCAL DISTRIBUTION OF RELAY NODES. THREE DOWNLINK RADIOS ARE USED IN THIS EXAMPLE. ROOT NODE RELAY NODE DOWNLINK ANTENNA SIGNAL SPREADS CAMERA COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 15. WHILE OTHER VENDORS OFFER ONLY A SINGLE DOWNLINK RADIO ON THE ROOT NODE, WHICH CAN SEVERELY LIMIT THE NUMBER OF CAMERAS THAT CAN BE INSTALLED ON A NETWORK, THE ABILITY OF THE MD4000 TO UTILIZE MULTIPLE DOWNLINK RADIOS ALLOWS FOR A SUBSTANTIAL INCREASE IN THE NUMBER OF NETWORK CAMERAS. ROOT NODE RELAY NODE DOWNLINK ANTENNA SIGNAL SPREADS CAMERA COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 16. THE BENEFIT OF MULTIPLE DOWNLINK RADIOS CAN ALSO BE APPLIED TO RELAY NODES. A RELAY NODE’S UPLINK THAT HAS A BONDED-CHANNEL CONNECTION (44Mbps) CAN PROVIDE SEPARATE DOWNLINK CONNECTIONS OF 22Mbps TO DIFFERENT GEOGRAPHICAL LOCATIONS. THIS IS ESPECIALLY HELPFUL WHEN THERE ARE NODE CLUSTERS AND SURVEILLANCE AREAS ARE THAT ARE NON- LINE-OF-SITE FROM THE ROOT NODE. ROOT NODE (downlink antenna) s bp 44 MOUNTAIN M M bp 22 s 22Mbps RELAY NODE COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 17. THE BENEFIT OF MULTIPLE DOWNLINK RADIOS CAN ALSO BE APPLIED TO RELAY NODES. A RELAY NODE’S UPLINK THAT HAS A BONDED-CHANNEL CONNECTION (44Mbps) CAN PROVIDE SEPARATE DOWNLINK CONNECTIONS OF 22Mbps TO DIFFERENT GEOGRAPHICAL LOCATIONS. THIS IS ESPECIALLY HELPFUL WHEN THERE ARE NODE CLUSTERS AND SURVEILLANCE AREAS ARE THAT ARE NON- LINE-OF-SITE FROM THE ROOT NODE. ROOT MOUNTAIN NODE node Cluster s bp 44 MOUNTAIN M M bp 22 s node RELAY 22Mbps cluster MOUNTAIN NODE COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 18. THE COMBINATION OF THE THIRD GENERATION BACKHAUL AND SEAMLESS NODE-TO-NODE SWITCHING MAKE THE MD4000 MOBILE NODES IDEAL FOR MOBILE VIDEO APPLICATIONS. THE MD4000 HAS BEEN TESTED AT 65Mph WHILE SENDING GLITCH-FREE VIDEO OVER 5 HOPS. DURING THIS TEST, AN AVERAGE OF 10Mbps OF THROUGHPUT WAS MEASURED. THE CONNECTIVITY OF THE MOBILE NODE WAS SET AT 24Mbps IN ORDER TO UTILIZE THE ROBUST 16-QAM MODULATION SCHEME. ROOT NODE COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 19. THE COMBINATION OF THE THIRD GENERATION BACKHAUL AND SEAMLESS NODE-TO-NODE SWITCHING MAKE THE MD4000 MOBILE NODES IDEAL FOR MOBILE VIDEO APPLICATIONS. THE MD4000 HAS BEEN TESTED AT 65Mph WHILE SENDING GLITCH-FREE VIDEO OVER 5 HOPS. DURING THIS TEST, AN AVERAGE OF 10Mbps OF THROUGHPUT WAS MEASURED. THE CONNECTIVITY OF THE MOBILE NODE WAS SET AT 24Mbps IN ORDER TO UTILIZE THE ROBUST 16-QAM MODULATION SCHEME. IP CAMERA COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS
  • 20. THE COMBINATION OF THE THIRD GENERATION BACKHAUL AND SEAMLESS NODE-TO-NODE SWITCHING MAKE THE MD4000 MOBILE NODES IDEAL FOR MOBILE VIDEO APPLICATIONS. THE MD4000 HAS BEEN TESTED AT 65Mph WHILE SENDING GLITCH-FREE VIDEO OVER 5 HOPS. DURING THIS TEST, AN AVERAGE OF 10Mbps OF THROUGHPUT WAS MEASURED. THE CONNECTIVITY OF THE MOBILE NODE WAS SET AT 24Mbps IN ORDER TO UTILIZE THE ROBUST 16-QAM MODULATION SCHEME. Throughput 21.00 18.00 15.00 12.00 (Mbps) 9.00 6.00 3.00 0.00 00:00 00:50 01:40 02:30 03:20 04:10 05:00 05:50 06:40 07:50 Elapsed Time (mm:ss) COPYRIGHT 2008 MESHDYNAMICS, INC. ALL RIGHTS RESERVED. DISCLOSURES PROTECTED BY MULTIPLE PATENTS