Title of Invention	'SPLIT-TABLE ATM MULTICAST SWITCH'
Abstract	This invention relates to a split table ATM multicast switch for use in the series. The switch has an inputs cell processor connected to a running adder and dummy address encoder adapted to be connected to a comparator. A replicating banyan network is connected to the outputs of said combactor. The outputs of said replicating banyan is connected to a routing network having output buffer connected therewith.

Title of Invention

'SPLIT-TABLE ATM MULTICAST SWITCH'

Abstract

This invention relates to a split table ATM multicast switch for use in the series. The switch has an inputs cell processor connected to a running adder and dummy address encoder adapted to be connected to a comparator. A replicating banyan network is connected to the outputs of said combactor. The outputs of said replicating banyan is connected to a routing network having output buffer connected therewith.

Full Text	This invention relates to a Split Table ATM Multicast Switch (S-TAMB) , for use in the series ). ike video-conferencing video-on--demand multiparty teleuphony , distributed computing , video- distribution and broadcasti ng and tele-teaching - Mul t i cat-it switch are as such known in the art but there are disadvantages associated with such switches. One of the main disadvaritage is that a large memory network is re-quired even -for vary small swi t chess. Anot.her disadvantage is that the duplication of connection control tables takes place and therefore a large storage network is required. Vet. another disadvantage is that the copy network is blocking in nature and requires internal suffering to reduce blocking. Still another di sad vantage is that in the conventional switches supporting dynamic, group changes is ri i •!"• -f i c t..t 11, There-fore, the main .object o-f this invention is to provide a Split Table ATM multicast switch which obviates the disadvantages associated with the prior art. Another object of this invention is to provide a Split Table ATM multicast switch having the means to reduces memory network but function efficiently. Yet another object of this invention is to provide a Split Table ATM mutlicast switch provide with the means which obviates the table duplication problem. According to this invention there is provided a split Table ATM multicast switch (S-TAMS) for use in the series characterized in that an input cells processor being connected to a running adder and dummy address encoder adapted to be connected to a combactor, a replicating banyan network being connected to the outputs of said combactor, the outputs of said replicating banyan being connected to a routing network having output buffer being connected therewith. In accordance with this invention a split table ATM (A Synchronous Transfer Mode) multicast switch has an input cell processor connected to a running adder and dummy address encoder to find out the routing information corresponding to the incoming cell from the routing table of the input cell processor. The running adder and dummy address encoder network is provided to generate running sums of the copy numbers. The output of the running adder are connected to a comb act or provided to satisfy the known blocking conditions -for banyan network which is connected to the output of the combactor, The outputs of replicating banyan network are connected to a routing network provided to routs cells appear ing at the output at the; replicating banyan wet work to appropriate output. ports. An output buffer is connected to the outputs of the routing network BO as to collect the cells -from the routine) network -for the- -Further processing thereof by scheduler, trans-later- and VC1/VPL. A split table multicast switch according to a preferred embodiment is- herein described and illustrated in the accompanying drawings Fig.1 shows the block, diagram of the spl it table multicast switch. Referring to the drawings a. split table ATM multicast switch (S-TAM3) has an input cell processor i having routing table 2 therewith is connected to a running adder and dummy address encoder's provided to generate running BUMS o-f copy numbers as. specified in the additional dummy header. The input, cell processor i is provided to find out. the routing information corresponding to the incoming cell for the routing table (RT)2 and appends this; information to the ceil as the routing header , The informati on in RT is indexed by the incoming VCI/VP1 and consists at a hit pattern. A count signifying the total number of copies to be produced is generated and attached to the cell &.B an additional dummy header. The outputs of the running header- and dummy address encoder 3 are connected to a compactor 4 provided to satisfy the non blocking condition for banyan network or replicating banyan network 5 which is connected to the outputs- o-f the combactor 4, The replicating banyan network 5 is provided -for replicating the incoming cell to both o-f its output The replicating banyan network 5 replicates, cells according to a boolean interval splitting algorithm based on the address intervals in the new header. The replicating banyan network 5 also process the routing header attached to the cell according to the novel address:, generation algorithm. The outputs o-f replicating banyan network 5 are connected tu the? inputs o-f a routing network 6 provided to routes cells appearing at the output of the replicating banyan network to appropriate output ports. The number o-f input, ports o-f the routing network is equal to the number of output, ports o-f the replicating banyan network. An output buffer 7 is connected to the outputs or to the output ports o-f the routing network 6 The output buffer 7 having connection control table (DCT) 8 there with is provided to collect the cells -from the routing network 6 which are being processed by scheduler BO as to scheduler the axit of the cells from the buffer. The translater translates, the incoming VCI/VPI. to the outgoing VCI/VPI,, The; scheduling parameters and the outgoing VCI/VPI values, are obtained from the connect ion control table 8 and are indexed by the incoming VCI / VP1 . WE CLAIMS; 1. A split Table ATM multicast switch (S-TAMS) for use in the series characterized in that an input cells processor (1) being connected to a running adder and dummy address encoder (3) adapted to be connected to a combactor (4), a replicating banyan network (5) being connected to the outputs of said combactor, the outputs of said replicating banyan being connected to a routing network (6) having output buffer (7) being connected therewith. 2. A switch as claimed in claim 1 wherein input cell processor comprises routing table (2) provided therewith. 3. A switch as claimed in claim 1 wherein said output buffer comprises connection control table (8) provided therewith. 4. A split Table ATM multicast switch (S-TAMS) for use in the series substantially as herein described and illustrated.

Full Text

This invention relates to a Split Table ATM Multicast Switch (S-TAMB) , for use in the series ). ike video-conferencing video-on--demand multiparty teleuphony , distributed computing , video- distribution and broadcasti ng and tele-teaching -
Mul t i cat-it switch are as such known in the art but there are disadvantages associated with such switches. One of the main disadvaritage is that a large memory network is re-quired even -for vary small swi t chess.
Anot.her disadvantage is that the duplication of connection control tables takes place and therefore a large storage network is required.
Vet. another disadvantage is that the copy network is blocking in nature and requires internal suffering to reduce blocking.
Still another di sad vantage is that in the conventional switches supporting dynamic, group changes is ri i •!"• -f i c t..t 11,
There-fore, the main .object o-f this invention is to provide a Split Table ATM multicast switch which obviates the disadvantages associated with the prior art.

Another object of this invention is to provide a Split Table ATM multicast switch having the means to reduces memory network but function efficiently.
Yet another object of this invention is to provide a Split Table ATM mutlicast switch provide with the means which obviates the table duplication problem.
According to this invention there is provided a split Table ATM multicast switch (S-TAMS) for use in the series characterized in that an input cells processor being connected to a running adder and dummy address encoder adapted to be connected to a combactor, a replicating banyan network being connected to the outputs of said combactor, the outputs of said replicating banyan being connected to a routing network having output buffer being connected therewith.
In accordance with this invention a split table ATM (A Synchronous Transfer Mode) multicast switch has an input cell processor connected to a running adder and dummy address encoder to find out the routing information corresponding to the incoming cell from the routing table of the input cell processor. The running adder and dummy address encoder network is provided to generate running sums of the copy numbers. The output of the running adder are connected to a

comb act or provided to satisfy the known blocking conditions -for banyan network which is connected to the output of the combactor, The outputs of replicating banyan network are connected to a routing network provided to routs cells appear ing at the output at the; replicating banyan wet work to appropriate output. ports. An output buffer is connected to the outputs of the routing network BO as to collect the cells -from the routine) network -for the- -Further processing thereof by scheduler, trans-later- and VC1/VPL.
A split table multicast switch according to a preferred embodiment is- herein described and illustrated in the accompanying drawings
Fig.1 shows the block, diagram of the spl it table
multicast switch.
Referring to the drawings a. split table ATM multicast switch (S-TAM3) has an input cell processor i having routing table 2 therewith is connected to a running adder and dummy address encoder's provided to generate running BUMS o-f copy numbers as. specified in the additional dummy header. The input, cell processor i is provided to find out. the routing information corresponding to the incoming cell for the

routing table (RT)2 and appends this; information to the ceil as the routing header , The informati on in RT is indexed by the incoming VCI/VP1 and consists at a hit pattern. A count signifying the total number of copies to be produced is generated and attached to the cell &.B an additional dummy header. The outputs of the running header- and dummy address encoder 3 are connected to a compactor 4 provided to satisfy the non blocking condition for banyan network or replicating banyan network 5 which is connected to the outputs- o-f the combactor 4, The replicating banyan network 5 is provided -for replicating the incoming cell to both o-f its output The replicating banyan network 5 replicates, cells according to a boolean interval splitting algorithm based on the address intervals in the new header. The replicating banyan network 5 also process the routing header attached to the cell according to the novel address:, generation algorithm. The outputs o-f replicating banyan network 5 are connected tu the? inputs o-f a routing network 6 provided to routes cells appearing at the output of the replicating banyan network to appropriate output ports. The number o-f input, ports o-f the routing network is

equal to the number of output, ports o-f the replicating banyan network. An output buffer 7 is connected to the outputs or to the output ports o-f the routing network 6 The output buffer 7 having connection control table (DCT) 8 there with is provided to collect the cells -from the routing network 6 which are being processed by scheduler BO as to scheduler the axit of the cells from the buffer. The translater translates, the incoming VCI/VPI. to the outgoing VCI/VPI,, The; scheduling parameters and the outgoing VCI/VPI values, are obtained from the connect ion control table 8 and are indexed by the incoming VCI / VP1 .

WE CLAIMS;
1. A split Table ATM multicast switch (S-TAMS) for use in the series
characterized in that an input cells processor (1) being connected to
a running adder and dummy address encoder (3) adapted to be
connected to a combactor (4), a replicating banyan network (5) being
connected to the outputs of said combactor, the outputs of said
replicating banyan being connected to a routing network (6) having
output buffer (7) being connected therewith.
2. A switch as claimed in claim 1 wherein input cell processor
comprises routing table (2) provided therewith.
3. A switch as claimed in claim 1 wherein said output buffer comprises
connection control table (8) provided therewith.
4. A split Table ATM multicast switch (S-TAMS) for use in the series
substantially as herein described and illustrated.

Documents:

983-del-1997-abstract.pdf

983-del-1997-claims.pdf

983-del-1997-correspondence-others.pdf

983-del-1997-correspondence-po.pdf

983-del-1997-description (complete).pdf

983-del-1997-drawings.pdf

983-del-1997-form-1.pdf

983-del-1997-form-19.pdf

983-del-1997-form-2.pdf

983-del-1997-form-3.pdf

983-del-1997-form-5.pdf

983-del-1997-form-6.pdf

983-del-1997-gpa.pdf

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Patent Number

233357

Indian Patent Application Number

983/DEL/1997

PG Journal Number

13/2009

Publication Date

27-Mar-2009

Grant Date

29-Mar-2009

Date of Filing

17-Apr-1997

Name of Patentee

MR. D. MANJUNATH ASSISTANT PROFESSOR,

Applicant Address

ELECTRICAL ENGINEERING DEPARTMENT, INDIAN INSTITUTE OF TECHNOLOGY, KANPUR-208016

Inventors:

#	Inventor's Name	Inventor's Address
1	MR. JAYESH V. SHAH	M.TECH. STUDENT, ELECTRICAL ENGINEERING DEPARTMENT, INDIAN INSTITUTE FO TECHNOLOGY, KANPUR-208016
2	DR. D. MANJUNATH ASSISTANT PROFESSOR,	ELECTRICAL ENGINEERING DEPARTMENT, INDIAN INSTITUTE OF TECHNOLOGY, KANPUR-208016
3	THE DIRECTOR	INDIAN INSTITUTE OF TECHNOLOGY, KANPUR-208016

PCT International Classification Number

H04L 12/28

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA