US6122292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic band allocation system
Assignee: Hitachi Ltd
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Filing: 1998-03-11
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Granted: 2000-09-19
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Expires: 2018-03-11
Abstract
Abstract A dynamic band allocation system wherein the bands of a SD-I line 20 are divided into a sub-rate band used by sub-rate units and a bit multiplex band, the sub-rate band being used as an on-demand band where a trunk and a channel are selected dynamically for connection according to demand, the bit multiplex band being divided into a fixed connection band and a fixed allocation band wherein terminals having a small speed unit are bit multiplexed so that the sum of the signaling speed of the terminals is closest to the speed of the sub-rate unit, and when call is originated from the terminal, selecting only the trunk matching its signaling speed for connection, and further dividing the on-demand band into areas for voice and for data, wherein the ratio of the division of voice/data is changed according to the traffic from time to time.
Inventors
- 👤 Toshikatsu Watanabe
- 👤 Makoto Oouchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:28
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/16; H04J3/1605; H04J3/1623; H04J3/1647; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0435; H04Q11/0457
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
354 words
A dynamic band allocation method in a multiplexing device constituting a network connected by a digital private (SD-I) line, including a plurality of 8 kbps-unit channels, said method comprising the steps of: (a) dividing a band of the SD-I line into a sub-rate band, usable in units of 8 kbps for voice communication or for data communication, and a bit multiplex band, usable in units of 8 kbps, wherein said bit multiplex band is a band for performing bit multiplexing so that the sum of the speeds of the multiplexed terminal devices is not greater than an 8 kbps unit; (b) dividing said sub-rate band into an on-demand band on which a trunk and a channel are selected and connected dynamically in response to a demand, a fixed allocation band on which the trunk and the channel are allocated in advance and only a trunk corresponding to the speed of a calling terminal device is selected when a call is originated from such calling terminal device, and a fixed connection band on which a fixed connection is maintained at all times and no dynamic connection can be made, wherein said on-demand band is formed so that the trunk and the channel of said on-demand band are divided for voice communication and for data communication; (c) dividing said bit multiplex band into a fixed allocation band on which the trunk and the channel are allocated in advance and only a trunk corresponding to the speed of a calling terminal device is selected when a call is originated from such calling terminal device, and a fixed connection band on which a fixed connection is maintained at all times and no dynamic connection can be made; (d) responding to origination of a call by a calling terminal device using said on-demand band by selecting a trunk, connecting such calling terminal device with said selected trunk, selecting a channel, connecting said selected trunk with said selected channel, and communicating the call; and (e) changing the ratio of division of said on-demand band usable for voice communication and usable for data communication based on the volume of the traffic.
Claim 2
Dependent Claim
354 words
A dynamic band allocation method in a multiplexing device constituting a network connected by a digital private (SD-I) line, including a plurality of 8 kbps-unit channels, said method comprising the steps of: (a) dividing a band of the SD-I line into a sub-rate band, usable in units of 8 kbps for voice communication or for data communication, and a bit multiplex band, usable in units of 8 kbps, wherein said bit multiplex band is a band for performing bit multiplexing so that the sum of the speeds of the multiplexed terminal devices is not greater than an 8 kbps unit; (b) dividing said sub-rate band into an on-demand band on which a trunk and a channel are selected and connected dynamically in response to a demand, a fixed allocation band on which the trunk and the channel are allocated in advance and only a trunk corresponding to the speed of a calling terminal device is selected when a call is originated from such calling terminal device, and a fixed connection band on which a fixed connection is maintained at all times and no dynamic connection can be made, wherein said on-demand band is formed so that the trunk and the channel of said on-demand band are divided for voice communication and for data communication; (c) dividing said bit multiplex band into a fixed allocation band on which the trunk and the channel are allocated in advance and only a trunk corresponding to the speed of a calling terminal device is selected when a call is originated from such calling terminal device, and a fixed connection band on which a fixed connection is maintained at all times and no dynamic connection can be made; (d) responding to origination of a call by a calling terminal device using said on-demand band by selecting a trunk, connecting such calling terminal device with said selected trunk, selecting a channel, connecting said selected trunk with said selected channel, and communicating the call; and (e) changing the ratio of division of said on-demand band usable for voice communication and usable for data communication based on the volume of the traffic.
Claim 3
Dependent Claim
57 words
The dynamic band allocation method of claim 1, wherein step (e) comprises increasing the portion of said on-demand band usable for voice communication during daytime when the amount of telephone being used is large, and increasing the portion of said on-demand band usable for data communication during nighttime when the amount of telephone being used is small.
Claim 4
Dependent Claim
55 words
The dynamic band allocation method of claim 1 or claim 2, further comprising: (f) forming a reserved band on the on-demand band to permit selecting and connecting a trunk and a channel dynamically according to demand only when the call is originated from a terminal device which has been set to the on-demand band optionally.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-09-19 | 2004-03-20 | 2004-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-19 | 2008-03-20 | 2008-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-19 | 2012-03-20 | 2012-09-19 | $7700.00 | Window Closed / Lapsed |