Patent US1691052A successfully refreshed from Google Patents.
Patent US5440548A successfully refreshed from Google Patents.
US5440548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicast packet generation device for a packet switching telecommunication system
Assignee: Alcatel Lucent NV
•
Filing: 1993-03-24
•
Granted: 1995-08-08
•
Expires: 2013-03-24
Abstract
Abstract A device (CP) to generate a number of multicast packets derived from a original packet applied at an input (I1/m) of a telecommunication system. The device has a device input (I) coupled to an input (I1/m) of the system and a device output (IN) connected to a single inlet (IN1/m) of a packet switching network (SN) also belonging to the system and coupled to outputs thereof. All the multicast packets are transmitted in series via the single device output (IN) so that only the corresponding single inlet (IN1/m) of the switching network (SN) is used for performing point-to-multipoint or multicast connections independently of the number of multicast packets to be derived from each original packet.
Inventors
- 👤 Frank L. Denissen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:21
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/02; H04L12/16; H04L12/18; H04L12/1863; H04L12/1877; H04L49/00; H04L49/20; H04L49/201; H04L49/203; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04L12/1886
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
164 words
A telecommunication system having at least one system input (I; I1/m) and a plurality of system outputs (O1/n) and including a plurality of multicast packet generation devices (CP1/m) and a packet switching network (SN), said packet switching network having a plurality of network inlets (IN1/m) and a plurality of network outlets (O1/n), each of said network outlets (O1/n) respectively corresponding to one of said system outputs (O1/n), each of said multicast packet generation devices having a single inlet corresponding to one of said system inputs and a single outlet connected to one of said network inlets, each of said multicast packet generation device being adapted to derive a plurality of distinct multicast packets from an original packet applied to said single inlet and to transmit said multicast packets in series to said single outlet, and said switching network being adapted to control the transfer of each of said multicast packets from any one of said network inlets to any one of said network outlets.
Claim 2
Dependent Claim
164 words
A telecommunication system having at least one system input (I; I1/m) and a plurality of system outputs (O1/n) and including a plurality of multicast packet generation devices (CP1/m) and a packet switching network (SN), said packet switching network having a plurality of network inlets (IN1/m) and a plurality of network outlets (O1/n), each of said network outlets (O1/n) respectively corresponding to one of said system outputs (O1/n), each of said multicast packet generation devices having a single inlet corresponding to one of said system inputs and a single outlet connected to one of said network inlets, each of said multicast packet generation device being adapted to derive a plurality of distinct multicast packets from an original packet applied to said single inlet and to transmit said multicast packets in series to said single outlet, and said switching network being adapted to control the transfer of each of said multicast packets from any one of said network inlets to any one of said network outlets.
Claim 3
Dependent Claim
86 words
A telecommunication system according to claim 1, wherein original packets are applied at said single input (I; I1/m) of each multicast packet generation device at an average input rate which is lower or equal to the output rate of said multicast packets at said output (IN; IN1/m) divided by the number of multicast packets to be derived from each of said original packets wherein said multicast packet generation devices (CP; CP1/m) includes means for increasing said lower or equal average input rate to said output rate.
Claim 4
Dependent Claim
34 words
A telecommunication system according to claim 2, wherein each of said multicast packet generation devices (CP; CP1/m) includes means for deriving from said packet control data the number of multicast packets to be generated.
Claim 5
Dependent Claim
49 words
A telecommunication system according to claim 2, wherein a multicast packet provided at one of said system outputs (O1/n) is supplied back by supplying means of said telecommunication system to an input (I1/m) of said telecommunication system in order to obtain additional multicast packets from a same original packet.
Claim 6
Dependent Claim
94 words
A telecommunication system according to claim 1, wherein said original packet has associated packet control data from which each of said multicast packet generation devices (CP; CP1/m) derives, by deriving means, for each of said multicast packets, a routing information indicative of the identity of said network outlet (O1/n) to which said multicast packet has to be transferred, and a packet identification indicative of the communication to which the multicast packet belongs, both said routing information and said packet identification being included in said multicast packet by said multicast packet generation device (CP; CP1/m).
Claim 7
Dependent Claim
56 words
A telecommunication system according to claim 5, wherein each of said multicast packet generation devices (CP; CP1/m) includes memory means (HM) to store under the form of a linked list (L1, L2, Lx; P0, P1, P2, Px) a plurality of said routing information and of said packet identification (HI, H2, Hx) derived from packet control data.
Claim 8
Dependent Claim
79 words
A telecommunication system according to claim 5, wherein each of said original packets and each of said multicast packets includes a header and a data field, that the header of an original packet contains said packet control data, that the header of each of the multicast packets derived from said original packet contains said routing information and said packet identification, and that the data field of said original packet and of said multicast packets contains the same user data.
Claim 9
Dependent Claim
57 words
A telecommunication system according to claim 5, wherein each of said multicast packet generation devices includes means for determining that all the multicast packets derived from a same original packet have to be transferred to a same network outlet (O1/n) and associating a same routing information but a distinct packet identification with each of said multicast packets.
Claim 10
Dependent Claim
32 words
A telecommunication system according to claim 5, wherein said multicast packet generation device (CP; CP1/m) includes means for deriving from said packet control data the number of multicast packets to be generated.
Claim 11
Dependent Claim
43 words
A telecommunication system according to claim 1, wherein a plurality of multicast packet generation devices (CP1/m) is provided, each multicast packet generation device being coupled between one input (I1/m) of said telecommunication system and one inlet (IN1/m) of said packet switching network (SN).
Claim 12
Dependent Claim
62 words
A telecommunication system according to claim 1, wherein said plurality of multicast packet generation devices is coupled between a same system input (I1/m) of said telecommunication system and a plurality of said network inlets (IN1/m) of said packet switching network (SN), the single output (IN1/m) of each multicast packet generation device being connected to a distinct one of said network inlets (IN1/m).
References Cited (Backward Citations)
EP0231967A1
Cited
EP0315918A1
Cited
US4922488A
Cited
EP0364955A2
Cited
US4891803A
Cited
US5138613A
Cited
US5179558A
Cited
GB2238934A
Cited
US5210743A
Cited
US5271004A
Cited
US5229991A
Cited
US5305311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-07 | 1999-02-06 | 1999-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-07 | 2003-02-06 | 2003-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-07 | 2007-02-06 | 2007-08-08 | $7700.00 | Window Closed / Lapsed |