EP0282028A2
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EP
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Multiple access communication system
Assignee: Toshiba Corp
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Filing: 1988-03-09
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Granted: —
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Expires: 2008-03-09
Abstract
Abstract A multiple access communication system performs the communication between plural communicating units (A, B...N) using plural communicating channels and a common signalling channel for establishing and releasing the communicating channels. The communication system allocates at least one carrier frequency to the common signalling channel; allocates the carrier frequencies, which are different from the carrier frequency alloted to the common signalling channel, to the communicating channels; forms a time frame composed of first and second time slots by the common signalling channel and communicating channel, respectively; and allocates the first time slot to at least the common signalling channel and the second time slot to the communicating channel. A communication between plural communicating units (A, B...N) is performed by selectively allocating plural carrier frequencies, which are different from the common signalling channel carrier frequency, to the plural communicating channels, and using a common signalling channel for establishing and releasing the communicating channels. A time frame of communicating channel is constituted by at least one packet. Transmission parameters of the communicating channel are selected including at least transmission speed, packet length and packet position from plural transmission parameters prepared in advance. The selected transmission parameters are set through the common signalling channel.
Inventors
- 👤 Hideo Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 09:38
CPC Classifications
H; H04; H04W; H04W72/00; H04W72/04; H04W72/044; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/204; H04B7/212; H04W72/0446; H04W72/0453; H04W76/00; H04W76/10; H04W76/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
105 words
A multiple access communication system for performing the communication between plural communicating units using plural communicating channels and a common signalling channel for establishing and releasing the communicating channels, characterized by allocating at least one carrier frequency to the common signalling channel; allocating the carrier frequencies, which are different from the carrier frequency alloted to the common signalling channel, to the communicating channels; forming a time frame composed of first and second time slots by the common signalling channel and communicating channel, respectively; and allocating the first time slot to at least the common signalling channel and the second time slot to the communicating channel.
Claim 2
Dependent Claim
105 words
A multiple access communication system for performing the communication between plural communicating units using plural communicating channels and a common signalling channel for establishing and releasing the communicating channels, characterized by allocating at least one carrier frequency to the common signalling channel; allocating the carrier frequencies, which are different from the carrier frequency alloted to the common signalling channel, to the communicating channels; forming a time frame composed of first and second time slots by the common signalling channel and communicating channel, respectively; and allocating the first time slot to at least the common signalling channel and the second time slot to the communicating channel.
Claim 3
Dependent Claim
34 words
A multiple access system as claimed in claim 1, wherein the second time slot is divided into plural time slots in order to communicate between one communicating unit and the other plural communicating units.
Claim 4
Dependent Claim
42 words
A multiple access system as claimed in claim 1, wherein the first time slot allocated to the common signalling channel is first used to establish a new communicating channel related to the communicating unit, in which a communicating channel is already established.
Claim 5
Dependent Claim
31 words
A multiple access system as claimed in claim 1, wherein the second time slot is also allocated to the common signalling channel, and is first used to release the communicating channel.
Claim 6
Dependent Claim
42 words
A multiple access system as claimed in claim 1, wherein the second time slot is also allocated to the common signalling channel, and is used to establish a communicating channel related to the communicating unit, in which no communicating channel is established.
Claim 7
Dependent Claim
40 words
A multiple access system as claimed in claim 1, wherein at least one of the first and second time slots allocated to the common signalling channel is divided into plural time slots in order to receive plural common signalling channels.
Claim 8
Dependent Claim
22 words
A multiple access system as claimed in claim 1, wherein plural carrier frequencies, which are allocated to common signalling channel, are prepared.
Claim 9
Dependent Claim
96 words
A multiple access communication system for performing the communication between plural communicating units by selectively allocating plural carrier frequencies, which are different from the common signalling channel carrier frequency, to the plural communicating channels, and using a common signalling channel for establishing and releasing the communicating channels, characterized by constituting a time frame of communicating channel by at least one packet; selecting transmission parameters of the communicating channel including at least transmission speed, packet length and packet position from plural transmission parameters prepared in advance; and setting the selected transmission parameters through the common signalling channel.
Claim 10
Dependent Claim
96 words
A multiple access communication system for performing the communication between plural communicating units by selectively allocating plural carrier frequencies, which are different from the common signalling channel carrier frequency, to the plural communicating channels, and using a common signalling channel for establishing and releasing the communicating channels, characterized by constituting a time frame of communicating channel by at least one packet; selecting transmission parameters of the communicating channel including at least transmission speed, packet length and packet position from plural transmission parameters prepared in advance; and setting the selected transmission parameters through the common signalling channel.
Claim 11
Dependent Claim
38 words
A multiple access system as claimed in claim 8, wherein the transmission parameters of the communicating channel are set by a line control unit based on the requirement from a user's communicating unit through the common signalling channel.
Claim 12
Dependent Claim
24 words
A multiple access system as claimed in claim 8, wherein the transmission parameters of the communicating channel are set by the user's communicating unit.
Claim 13
Dependent Claim
39 words
A multiple access system as claimed in claim 8, wherein the user's communicating unit selects and sets the receiving bandwidth from the plural parameters prepared in advance in accordance with the transmission speed transmitted through the common signalling channel.
Claim 14
Dependent Claim
40 words
A multiple access system as claimed in claim 8, wherein the transmission parameters of the communicating channel are changed in accordance with the parameters in a header of the common signalling channel or the communicating channel under the communicating period.
Claim 15
Dependent Claim
25 words
A multiple access system as claimed in claim 8, wherein the transmission parameters of the communicating channel include a coding structure of the communicating channel,
Claim 16
Dependent Claim
136 words
A multiple access communication system for performing the communication between plural communicating units by selectively allocating plural carrier frequencies, which are different from the common signalling channel carrier frequency, to the plural communicating channels, and using a common signalling channel for establishing and releasing the communicating channels, characterized by forming a time frame composed of first and second time slots by the common signalling channel and communicating channel; allocating the first time slot to at least the common signalling channel and the second time slot to the communicating channel; constituting a time frame of communicating channel by at least one packet; selecting transmission parameters of the communicating channel including at least transmission speed, packet length and packet position from plural transmission parameters prepared in advance; and setting the selected transmission parameters through the common signalling channel.
Claim 17
Dependent Claim
136 words
A multiple access communication system for performing the communication between plural communicating units by selectively allocating plural carrier frequencies, which are different from the common signalling channel carrier frequency, to the plural communicating channels, and using a common signalling channel for establishing and releasing the communicating channels, characterized by forming a time frame composed of first and second time slots by the common signalling channel and communicating channel; allocating the first time slot to at least the common signalling channel and the second time slot to the communicating channel; constituting a time frame of communicating channel by at least one packet; selecting transmission parameters of the communicating channel including at least transmission speed, packet length and packet position from plural transmission parameters prepared in advance; and setting the selected transmission parameters through the common signalling channel.
Claim 18
Dependent Claim
34 words
A multiple access system as claimed in claim 14, wherein the second time slot is divided into plural time slots in order to communicate between one communicating unit and the other plural communicating units.
Claim 19
Dependent Claim
38 words
A multiple access system as claimed in claim 14, wherein the transmission parameters of the communicating channel are set by a line control unit based on the requirement from a user's communicating unit through the common signalling channel.
References Cited (Backward Citations)
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