US5638363A
Expired / Lapsed
US
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Switched telecommunications network with bandwidth management for different types of multiplexed traffic
Assignee: British Telecommunications PLC
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Filing: 1995-07-27
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Granted: 1997-06-10
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Expires: 2015-07-27
Abstract
Abstract A switched telecommunications network includes different types of traffic, such as audio data, including voice data, fax and modem originated data, digital computer originated data and video data. A communications link connects a user's site to the network, and a bandwidth manager is provided to multiplex traffic of different types for transmission over the link. After transmission over the link, a complementary bandwidth manager is arranged to de-multiplex the traffic for application to the respective switch. The bandwidth manager is arranged to dynamically allocate bandwidth to the different types of traffic, thereby optimizing the available bandwidth provided by the communications link.
Inventors
- 👤 Christopher J. Gittins
- 👤 Simon A. Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:38
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0016; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04Q3/0029; H04Q3/0062; H04Q3/0066; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5614; H04L2012/5615; H04L2012/5619; H04L2012/5629; H04L2012/5631; H04L2012/5632; H04Q2213/00; H04Q2213/13034; H04Q2213/13174; H04Q2213/1322; H04Q2213/13332; H04Q2213/13337; H04Q2213/13384; H04Q2213/13523
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
219 words
A switched telecommunications network comprising: a main network having a plurality of interconnected switching devices, a first communications link connecting a user's site to the main network via a first of the switching devices, the first switching device including first switching means for switching a first type of traffic, and second switching means for switching a second type of traffic, a bandwidth manager disposed at the user's end of the first communications link which analyzes data to be transmitted and provides compression that is dependent on the type of data being transmitted, the bandwidth manager being arranged to multiplex traffic of the first and second types for transmission over the link, and a complementary bandwidth manager disposed at the switching end of the first communications link, the complementary bandwidth manager being arranged to de-multiplex the first and second traffic types for application to the first switching device; a second communications link connecting a second user's site to the main network via a second of the switching devices, the second switching device including first switching means for switching a first type of traffic, and second switching means for switching a second type of traffic, a bandwidth manager disposed at the user's end of the second communications link, the bandwidth manager of the second communications link reconstituting user originated signalling data.
Claim 2
Dependent Claim
219 words
A switched telecommunications network comprising: a main network having a plurality of interconnected switching devices, a first communications link connecting a user's site to the main network via a first of the switching devices, the first switching device including first switching means for switching a first type of traffic, and second switching means for switching a second type of traffic, a bandwidth manager disposed at the user's end of the first communications link which analyzes data to be transmitted and provides compression that is dependent on the type of data being transmitted, the bandwidth manager being arranged to multiplex traffic of the first and second types for transmission over the link, and a complementary bandwidth manager disposed at the switching end of the first communications link, the complementary bandwidth manager being arranged to de-multiplex the first and second traffic types for application to the first switching device; a second communications link connecting a second user's site to the main network via a second of the switching devices, the second switching device including first switching means for switching a first type of traffic, and second switching means for switching a second type of traffic, a bandwidth manager disposed at the user's end of the second communications link, the bandwidth manager of the second communications link reconstituting user originated signalling data.
Claim 3
Dependent Claim
39 words
A network as in claim 1, wherein: the switching devices are configured for switching non-compressed data, and means are provided for adding blank data to the compressed data so as to produce switchable words without decompressing the compressed data.
Claim 4
Dependent Claim
21 words
A network as in claim 2, further comprising means for removing the added blank data after switching and prior to re-transmission.
Claim 5
Dependent Claim
41 words
A network as in claim 1 wherein: the bandwidth manager of the first communications link compresses user-originated signalling data and network signalling data is added to effect transmission, and the bandwidth manager of the second communications link reconstitutes user-originated signalling data.
Claim 6
Dependent Claim
25 words
A network as in claim 1, wherein the bandwidth manager of the first communications link compresses voice data to a higher degree than non-voice data.
Claim 7
Dependent Claim
30 words
A network as in claim 5, wherein the bandwidth manager of the first communications link provides a compression ratio of voice data to non-voice data that is eight to one.
Claim 8
Dependent Claim
55 words
A network as in claim 6, wherein: the bandwidth manager of the first communications link compresses 64-bit voice data words to 8-bit words for transmission along said link, and the complementary bandwidth manager of the first communications link adds 56 additional null bits to each 8-bit compressed word to form a quasi 64-bit switchable word.
Claim 9
Dependent Claim
27 words
A network as in claim 1 wherein the bandwidth manager of the first communications link compresses data prior to being multiplexed for transmission to a local exchange.
Claim 10
Dependent Claim
33 words
A network as in claim 8, wherein the multiplexed data is demultiplexed at the local exchange, and each type of data obtained from the multiplex is supplied to respective networks in compressed form.
Claim 11
Dependent Claim
66 words
A network as in claim 1 wherein: the first and second switching devices each comprises a third switching means for switching a third type of traffic, the bandwidth manager of the first communications link is arranged to multiplex the first, second and third types of traffic, and the complementary bandwidth manager of said link is arranged to de-multiplex the first, second and third types of traffic.
Claim 12
Dependent Claim
36 words
A network as in claim 10, wherein the first type of traffic is voice data or audio modulated data, the second type of traffic is computer-generated data and the third type of traffic is video data.
Claim 13
Dependent Claim
27 words
A network as in claim 1 wherein the bandwidth manager of the first communications link allocates bandwidth to particular types of traffic in response to customer demand.
Claim 14
Dependent Claim
28 words
A network as in claim 12, wherein the bandwidth manager of the first communications link includes means for guaranteeing a minimum level of bandwidth for particular traffic types.
Claim 15
Dependent Claim
28 words
A network as in claim 1 wherein the first type of traffic is voice data or audio modulated data, and the second type of traffic is computer-generated data.
Claim 16
Dependent Claim
34 words
A network as in claim 14 wherein the bandwidth manager of the first communications link includes means for identifying voice data, and for compressing the voice data to facilitate efficient transmission through the network.
Claim 17
Dependent Claim
35 words
A network as in claim 14 wherein the bandwidth manager of the first communications link includes means for identifying facsimile encoded data, and for re-coding the facsimile data to facilitate efficient transmission through the network.
Claim 18
Dependent Claim
36 words
A network as in claim 14 wherein the bandwidth manager of the first communications link includes means for identifying audio encoded computer originated data from a modem, and for re-coding said data to facilitate efficient transmission.
Claim 19
Dependent Claim
60 words
A network as in claim 1 wherein the bandwidth manager of the first communications link includes: means for converting signalling data generated by a user into data which may be transmitted onto the main network via the first switching device, and means for reconverting converted signalling data received from the main network into a form recognisable by the associated user.
Claim 20
Dependent Claim
24 words
A network as in claim 1 wherein the bandwidth manager of the first communications link includes means for interfacing a plurality of user's lines.
Claim 21
Dependent Claim
31 words
A network as in claim 1 wherein the bandwidth manager of the first communications link includes means for detecting overflow conditions, and for establishing an overflow link to an alternative network.
Claim 22
Dependent Claim
25 words
A network as in claim 1 wherein the bandwidth manager of the first communications link includes means for supplying operational data to management control computers.
Claim 23
Independent Claim
127 words
A method of communicating over a telecommunications network, the method comprising the steps of: switching a first type of traffic via a first switching means, switching a second type of traffic via a second switching means, connecting a user's site to the network via a communications link having a bandwidth manager which analyzes the traffic to be transmitted and which directs different types of traffic to a respectively corresponding one of said switching steps multiplexing traffic of the first and second types for transmission over the link at the user's end of the link, and de-multiplexing the first and second traffic types for application to respective switching means at the switching end of the link and decompressing each type of traffic to reconstitute the original transmitted traffic.
Claim 24
Independent Claim
127 words
A method of communicating over a telecommunications network, the method comprising the steps of: switching a first type of traffic via a first switching means, switching a second type of traffic via a second switching means, connecting a user's site to the network via a communications link having a bandwidth manager which analyzes the traffic to be transmitted and which directs different types of traffic to a respectively corresponding one of said switching steps multiplexing traffic of the first and second types for transmission over the link at the user's end of the link, and de-multiplexing the first and second traffic types for application to respective switching means at the switching end of the link and decompressing each type of traffic to reconstitute the original transmitted traffic.
Claim 25
Dependent Claim
23 words
A method as in claim 22, further comprising the step of allocating bandwidth to particular types of traffic in response to customer demand.
Claim 26
Dependent Claim
21 words
A method as in claim 23, further comprising the step of guaranteeing a minimum level of bandwidth for particular traffic types.
Claim 27
Dependent Claim
21 words
A method as in claim 24, further comprising the step of multiplexing a third traffic type for transmission over the link.
Claim 28
Dependent Claim
15 words
A method as in claim 22 wherein one of the traffic types is video data.
Claim 29
Dependent Claim
17 words
A method as in claim 22 wherein one of the said traffic types is computer originated data.
Claim 30
Dependent Claim
19 words
A method as in claim 22 wherein one of the traffic types is voice data or audio modulated data.
Claim 31
Dependent Claim
24 words
A method as in claim 28, further comprising the steps of: identifying voice data, and compressing the voice data to reduce transmission bandwidth requirements.
Claim 32
Dependent Claim
26 words
A method as in claim 28, further comprising the steps of: identifying facsimile encoded data, and recoding said facsimile data so as to facilitate efficient transmission.
Claim 33
Dependent Claim
28 words
A method as in claim 28, further comprising the steps of: identifying audio encoded computer originated data from a modem, and recoding said data to facilitate efficient transmission.
Claim 34
Independent Claim
127 words
A method of transmitting data, via bandwidth managing devices, through a switched network constituted by a plurality of interconnected switching devices, the method comprising the steps of: compressing user originated data at a transmitting bandwidth managing device, transmitting the compressed data to a first complementary bandwidth managing device connected to a first switching device which analyzes the data to be transmitted and provides a level of compression that is dependent on the type of data being transmitted, switching the compressed data through a plurality of switching devices, transmitting the switched compressed data to a receiving bandwidth managing device via a second complementary bandwidth managing device connected to a second switching device, and decompressing the compressed data at the receiving bandwidth managing device to reconstitute the originated data.
Claim 35
Independent Claim
127 words
A method of transmitting data, via bandwidth managing devices, through a switched network constituted by a plurality of interconnected switching devices, the method comprising the steps of: compressing user originated data at a transmitting bandwidth managing device, transmitting the compressed data to a first complementary bandwidth managing device connected to a first switching device which analyzes the data to be transmitted and provides a level of compression that is dependent on the type of data being transmitted, switching the compressed data through a plurality of switching devices, transmitting the switched compressed data to a receiving bandwidth managing device via a second complementary bandwidth managing device connected to a second switching device, and decompressing the compressed data at the receiving bandwidth managing device to reconstitute the originated data.
Claim 36
Independent Claim
99 words
A method of communicating through a switched telecommunications network, the method comprising the steps of: generating user specific signalling data, converting said data to transmittable data at a bandwidth managing device which analyzes the data to be transmitted and provides a level of compression that is dependent on the type of data being transmitted, supplying the transmittable data to a public switched network from the bandwidth managing device, receiving the transmitted data at a receiving bandwidth managing device, and reconverting said user specific signalling data at the receiving bandwidth managing device to reconstitute the original user specific signalling data.
Claim 37
Independent Claim
99 words
A method of communicating through a switched telecommunications network, the method comprising the steps of: generating user specific signalling data, converting said data to transmittable data at a bandwidth managing device which analyzes the data to be transmitted and provides a level of compression that is dependent on the type of data being transmitted, supplying the transmittable data to a public switched network from the bandwidth managing device, receiving the transmitted data at a receiving bandwidth managing device, and reconverting said user specific signalling data at the receiving bandwidth managing device to reconstitute the original user specific signalling data.
Claim 38
Dependent Claim
58 words
A bandwidth manager connectable between a transmission link and a switching device, the bandwidth manager comprising: means for converting signalling data, means for analyzing the data to be transmitted and for compressing and de-compressing data at a level of compression that is dependent on the type of data being transmitted, and means for multiplexing a plurality of channels.
Claim 39
Dependent Claim
58 words
A bandwidth manager connectable between a transmission link and a switching device, the bandwidth manager comprising: means for converting signalling data, means for analyzing the data to be transmitted and for compressing and de-compressing data at a level of compression that is dependent on the type of data being transmitted, and means for multiplexing a plurality of channels.
Claim 40
Dependent Claim
24 words
A bandwidth manager as in claim 34, further comprising means for identifying overflow conditions, and for establishing an overflow link to an alternative network.
Claim 41
Dependent Claim
25 words
A bandwidth manager as in claim 34 further comprising means arranged to instruct an operational computer to provide additional bandwidth in response to customer demand.
Claim 42
Dependent Claim
171 words
A switched telecommunications network comprising: a main network including a plurality of interconnected switching devices, a first communications link connecting a user's site to the main network via a first of the switching devices, a bandwidth manager provided at the user's end of the first communications link which analyzes data to be transmitted and provides a data compression that is dependent on the type of data being transmitted, a second communications link connecting a second user's site to the main network via a second of the switching devices, and a bandwidth manager provided at the user's end of the second communications link, the bandwidth manager of the first communications link being arranged to compress data from the associated user for transmission over the main network, the bandwidth manager of the second communications link being arranged to decompress received compressed data for transmission to the associated user and to reconstitute the originally transmitted data, and wherein the transmitted data remains in compressed form while being switched and transmitted by the main network.
Claim 43
Dependent Claim
171 words
A switched telecommunications network comprising: a main network including a plurality of interconnected switching devices, a first communications link connecting a user's site to the main network via a first of the switching devices, a bandwidth manager provided at the user's end of the first communications link which analyzes data to be transmitted and provides a data compression that is dependent on the type of data being transmitted, a second communications link connecting a second user's site to the main network via a second of the switching devices, and a bandwidth manager provided at the user's end of the second communications link, the bandwidth manager of the first communications link being arranged to compress data from the associated user for transmission over the main network, the bandwidth manager of the second communications link being arranged to decompress received compressed data for transmission to the associated user and to reconstitute the originally transmitted data, and wherein the transmitted data remains in compressed form while being switched and transmitted by the main network.
Claim 44
Dependent Claim
16 words
A network as in claim 37, wherein the first and second communications links are fixed links.
Claim 45
Dependent Claim
16 words
A network as in claim 37, wherein the first and second communications links are radio links.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-09 | 2000-12-09 | 2001-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-09 | 2004-12-09 | 2005-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-09 | 2008-12-09 | 2009-06-10 | $7700.00 | Window Closed / Lapsed |