EP0524467A2
Expired / Lapsed
EP
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Band management system in communication
Assignee: Fujitsu Ltd
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Filing: 1992-07-03
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Granted: —
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Expires: 2012-07-03
Abstract
Abstract The invention is to offer a technology with which a call process, a band setting process in particular, from a unit of terminal equipment to a network can be effectively performed, in relation to a communication system in which a communication band necessary for a unit of terminal equipment is secured by transmitting a SETUP message to a network from the terminal equipment as in the case of a call procedure in B-ISDN, etc. In the communication control means of the terminal equipment connected to the network, when a call is made if the securing of a band in the network is impossible, the call is cut off, but if the band area in the network is insufficient for an initial band value stored in a SETUP message, a revised band value is produced by subtracting a certain value from the initial band value, and a SETUP message with the revised band value is retransmitted to the network.
Inventors
- 👤 Maki c/o Fujitsu Limited Takama
- 👤 Tetsuo C/O Fujitsu Limited Tachibana
- 👤 Emi C/O Fujitsu Limited Hata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 18:02
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L12/5602; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04L2012/5629; H04L2012/5631; H04L2012/5632
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
194 words
A band managing method in communication system having a terminal equipment connected to a communication network comprising the steps of: (a) transmitting a first message storing an initial band value to be used by the terminal equipment from the terminal equipment to the network; (b) comparing the initial band value B1 of the terminal equipment and a band value B2 of available band area of the network; (c) transmitting a call control message indicating a call setting to the terminal equipment when the result of the comparison is B1 ≦ B2; (d) transmitting a call control message indicating no usable band to the terminal equipment when the result of the comparison is B2=0; (e) transmitting a call control message indicating lack of usable band to the terminal equipment when the result of the comparison is B1 > B2 > 0; (f) cutting off the call when the terminal equipment is received the call control message indicating no band to use; and (g) calculating a revised band value B3 which is less than the band value B2, storing the revised band value B3 in the first message and retransmitting the first message to the network.
Claim 2
Dependent Claim
27 words
A band managing method according to claim 1; wherein the revised band value B3 is obtained by subtracting a specified value from the initial band value B1.
Claim 3
Dependent Claim
70 words
A band managing method according to claim 1; wherein the revised band value B3 is obtained by the steps of; (a) obtaining an insufficient band value B4 by subtracting the band value B2 from the initial band value B1; (b) transmitting the insufficient band value B4 to the terminal equipment; and (c) subtracting the insufficient band value B4 and upward from the initial band value B1 in the terminal equipment.
Claim 4
Dependent Claim
57 words
A band managing method according to claim 1; wherein the revised band value B3 is obtained by the steps of; (a) transmitting the band value B2 of the network to the terminal equipment in the case of B1 > B2 > 0; and (b) subtracting a specified value from the band value B2 in the terminal equipment.
Claim 5
Dependent Claim
58 words
A band managing method according to claim 1; wherein the communication system having a timer which start at the time of transmitting the SETUP message storing the initial band value B1; and further comprising a step for retransmitting the SETUP message storing the initial band value B1 in judging the timer to be in state of time out.
Claim 6
Dependent Claim
204 words
A band managing system in communication having a terminal equipment being connected to a communication network comprising: (a) call means for storing an initial band value B1 to be used by the terminal equipment in a first message and transmitting the first message to the network; (b) band comparing means for comparing the initial band value B1 of the terminal equipment and a band value B2 of available band area of the network; (c) response means for transmitting a call control message indicating call setting to the terminal equipment when the result of the comparison is B1 ≦ B2, transmitting a call control message indicating no band to use to the terminal equipment when the result of the comparison is B2=0 and transmitting a call control message indicating insufficient band value to use to the terminal equipment when the result of the comparison is B1 > B2 > 0; and (d) communication control means for cutting off the call when the terminal equipment receive the call control message indicating no usable band, calculating a revised band value B3 which is less than the band value B2, storing the revised band value B3 in the first message and transmitting the first message to the network.
Claim 7
Dependent Claim
30 words
A band managing system according to claim 6; wherein the communication control means obtains the revised band value B3 by subtracting a specified value from the initial band value B1.
Claim 8
Dependent Claim
78 words
A band managing system according to claim 6; further comprising an insufficient band value calculating means for obtaining an insufficient band value B4 by subtracting the band value B2 from the initial band value B1, and the communication control means obtains the revised band value B3 by subtracting the insufficient band value B4 and upward from the initial band value B1, storing the revised band value in the SETUP message and transmitting the SETUP message to the network.
Claim 9
Dependent Claim
63 words
A band managing system according to claim 6; wherein the response means transmit the band value B2 of the network to the terminal equipment in the case of B1 > B2 > 0; the communication control means obtains the revised band value B3 by subtracting a specified value from the band value B2 and transmit the revised band value B3 to the network.
Claim 10
Dependent Claim
44 words
A band managing system according to claim 6; further comprising a band value setting means for setting a band value to use corresponding to data to be transmitted, the band value set is stored in the first message as an initial band value B1.
Claim 11
Dependent Claim
54 words
A band managing system according to claim 6; further comprising a timer which start at the time of transmitting the first message storing the initial band value B1; and the communication control means retransmits the first message storing the initial band value B1 in judging the timer to be in state of time out.
Claim 12
Dependent Claim
100 words
A terminal equipment being connected to a communication network comprising: (a) call means for storing an initial band value to be used by the terminal equipment in a SETUP message and transmitting the SETUP message to the network; and (b) communication control means for controlling a call procedure of call means, cutting off the call in the case of receiving the call control message indicating no usable band, calculating a revised band value B3 which is less than the band value B2, storing the revised band value B3 in the SETUP message and transmitting the SETUP message to the network.
Claim 13
Dependent Claim
29 words
A terminal equipment according to claim 12, wherein the communication control means obtains the revised band value B3 by subtracting a specified value from the initial band value B1.
Claim 14
Dependent Claim
57 words
A terminal equipment according to claim 12; further comprising a timer started by the communication control means at the time of transmitting the SETUP message storing the initial band value B1 and; the communication control means retransmits the SETUP message storing the initial band value B1 in judging the timer to be in state of time out.
Claim 15
Dependent Claim
27 words
A terminal equipment according to claim 12; further comprising a band value settling means for settling a band value to use corresponding to data to be transmitted.
Claim 16
Dependent Claim
121 words
A switching system in communication system having a terminal equipment connected to a communication network comprising: (a) band comparing means for comparing the initial band value B1 of the terminal equipment and a band value B2 of available band area of the network; and (b) response means for transmitting a call control message for a call setting to the terminal equipment when the result of the comparison is B1 ≦ B2, transmitting a call control message indicating no band to use to the terminal equipment when the result of the comparison is B2=0 and transmitting a call control message indicating insufficient band value to use to the terminal equipment when the result of the comparison is B1 > B2 > 0.
Claim 17
Dependent Claim
58 words
A switching system according to claim 16; further comprising an insufficient band value calculating means for obtaining an insufficient band value B4 by subtracting the band value B2 from the initial band value B1, and the response means stores insufficient band value B4 in the call control message and transmits the call control message to the terminal equipment.
Claim 18
Dependent Claim
32 words
A switching system according to claim 16; wherein the response means transmits the band value B2 of the network to the terminal equipment in the case of B1 > B2 > 0.
References Cited (Backward Citations)
No citation records indexed.
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