US5940769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio communication system having re-send control method
Assignee: Toshiba Corp
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Filing: 1996-03-27
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Granted: 1999-08-17
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Expires: 2016-03-27
Abstract
Abstract In a radio communication system, communication for sending data from a transmitting station to a receiving station and communication for transmitting re-send data from the transmitting station to the receiving station according to the re-send request transmitted from the receiving station to the transmitting station are done on different occasions of communication. Hence, in the applications not requiring real time service, this re-send control method does not spend the power and radio resources wastefully, and by effectively utilizing the system resources and lowering the power consumption, the battery of the terminal may be reduced in size, so that the portability of the terminal may be enhanced. Further, the radio communication system has a high speed down-link channel and a low speed down-link channel, data to be transmitted from a base station to a terminal is classified into primary data and secondary data, the primary data is transmitted by the high speed down-link channel, and the secondary data is transmitted by the low speed down-link channel.
Inventors
- 👤 Nobuyasu Nakajima
- 👤 Koji Ogura
- 👤 Mutsumu Serizawa
- 👤 Yoshinari Kumaki
- 👤 Katsuya Nounin
- 👤 Eiji Kamagata
- 👤 Takashi Wakutsu
- 👤 Tsutomu Sugawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:33
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/12; H04L1/16; H04L1/18; H04L1/1867; H04L1/1887; H04L2001/0092; H04L2001/0096
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
201 words
A radio communication system comprising: at least one transmitting station configured to transmit data comprising plural data packets to at least one receiving station configured to receive data; a sending device configured to send response signals from said at least one receiving station to said at least one transmitting station, each of said response signals showing presence or absence of transmission error in said plural data packets; and a re-sending device configured to re-send data packets, in which presence of the transmission error is indicated by said response signals, from said at least one transmitting station to said at least one receiving station, wherein said at least one transmitting station includes, a down-link channel from said at least one transmitting station to said at least one receiving station that comprises, a high speed transmission down-link channel, and a low speed transmission down-link channel, and an up-link channel from said at least one receiving station to said at least one transmitting station, said up-link channel being equal in transmission speed to said low speed transmission down-link channel, and wherein a communication range of said high speed transmission down-link channel is different from a communication range of said low speed transmission down-link channel.
Claim 2
Dependent Claim
201 words
A radio communication system comprising: at least one transmitting station configured to transmit data comprising plural data packets to at least one receiving station configured to receive data; a sending device configured to send response signals from said at least one receiving station to said at least one transmitting station, each of said response signals showing presence or absence of transmission error in said plural data packets; and a re-sending device configured to re-send data packets, in which presence of the transmission error is indicated by said response signals, from said at least one transmitting station to said at least one receiving station, wherein said at least one transmitting station includes, a down-link channel from said at least one transmitting station to said at least one receiving station that comprises, a high speed transmission down-link channel, and a low speed transmission down-link channel, and an up-link channel from said at least one receiving station to said at least one transmitting station, said up-link channel being equal in transmission speed to said low speed transmission down-link channel, and wherein a communication range of said high speed transmission down-link channel is different from a communication range of said low speed transmission down-link channel.
Claim 3
Dependent Claim
230 words
A radio communication system comprising: at least one transmitting station configured to transmit data comprising plural data packets to at least one receiving station configured to receive data; a sending device configured to send response signals from said at least one receiving station to said at least one transmitting station, each of said response signals showing presence or absence of transmission error in said plural data packets; and a re-sending device configured to re-send data packets, in which presence of the transmission error is indicated by said response signals, from said at least one transmitting station to said at least one receiving station, wherein said at least one transmitting station includes, a down-link channel from said at least one transmitting station to said at least one receiving station that comprises, a high speed transmission down-link channel, and a low speed transmission down-link channel, and an up-link channel from said at least one receiving station to said at least one transmitting station, said up-link channel being equal in transmission speed to said low speed transmission down-link channel, and wherein said re-sending device re-sends data by said high speed transmission down-link channel only when a data quantity to be re-sent is more than a specified quantity, and re-sends data by said low speed transmission down-link channel when the data quantity to be re-sent is equal to or less than the specified quantity.
Claim 4
Dependent Claim
230 words
A radio communication system comprising: at least one transmitting station configured to transmit data comprising plural data packets to at least one receiving station configured to receive data; a sending device configured to send response signals from said at least one receiving station to said at least one transmitting station, each of said response signals showing presence or absence of transmission error in said plural data packets; and a re-sending device configured to re-send data packets, in which presence of the transmission error is indicated by said response signals, from said at least one transmitting station to said at least one receiving station, wherein said at least one transmitting station includes, a down-link channel from said at least one transmitting station to said at least one receiving station that comprises, a high speed transmission down-link channel, and a low speed transmission down-link channel, and an up-link channel from said at least one receiving station to said at least one transmitting station, said up-link channel being equal in transmission speed to said low speed transmission down-link channel, and wherein said re-sending device re-sends data by said high speed transmission down-link channel only when a data quantity to be re-sent is more than a specified quantity, and re-sends data by said low speed transmission down-link channel when the data quantity to be re-sent is equal to or less than the specified quantity.
References Cited (Backward Citations)
US4829524A
Cited
US5483676A
Cited
US4890316A
Cited
JPH03274834A
Cited
US5590405A
Cited
US5600707A
Cited
US5546411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-16 | 2003-02-15 | 2003-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-16 | 2007-02-15 | 2007-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-16 | 2011-02-15 | 2011-08-17 | $7700.00 | Window Closed / Lapsed |