US5633874A
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Automatic retransmission request
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1994-10-31
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Granted: 1997-05-27
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Expires: 2014-10-31
Abstract
Abstract A method for obtaining a report from a mobile station on the status of frames comprising an entire message transmitted to the mobile station is disclosed. First, a polling request is sent to the mobile station from a base station. A status report is then sent to the base station. The polling request specifies whether the mobile station should send the status report on a reservation basis (using a reserved frame) or on a contention basis (using an idle frame). The mobile station then transmits a bit map to the communication system to indicate which frames have been correctly received by the mobile station at the point when it received the polling request.
Inventors
- 👤 John W. Diachina
- 👤 Håkan C. Andersson
- 👤 Bengt Persson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:40
CPC Classifications
H; H04; H04W; H04W48/00; H04W48/20; H04W68/00; H04W68/02; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2643; H04B7/2656; H04L; H04L1/00; H04L1/004; H04L1/0045; H04L1/0046; H04L1/0056; H04L1/0057; H04L1/0059; H04L1/0061; H04L1/0071; H04L1/0072; H04L1/0078; H04L1/0083; H04L1/08; H04L1/12; H04L1/16; H04L1/1607; H04L1/1614; H04L1/1685; H04L1/18; H04L1/1803; H04L1/1809; H04L1/1829; H04L1/1848; H04L1/1867; H04L1/188; H04L1/20; H04L9/00; H04L9/40; H04W48/16; H04W68/025; H04W72/00; H04W72/04; H04W72/044; H04W72/0446; H04L1/0001; H04L1/0002; H04L2001/0092; H04L2001/0093; H04W48/08; H04W48/10; H04W52/00; H04W52/02; H04W52/0209; H04W52/0212; H04W52/0225; H04W52/0245; H04W88/00; H04W88/02; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
106 words
A method for obtaining a report on the status of frames comprising a message transmitted to a remote station, comprising the steps of: transmitting said message to said remote station from a base station using layer 2 frames; sending a status request to said remote station from the base station using a layer 2 bit which is distinct from layer 2 bits used to carry the message; and sending a status report to said base station, wherein said status request contains a second layer 2 bit which specifies whether the remote station should send the status report on a reservation basis or on a contention basis.
Claim 2
Independent Claim
106 words
A method for obtaining a report on the status of frames comprising a message transmitted to a remote station, comprising the steps of: transmitting said message to said remote station from a base station using layer 2 frames; sending a status request to said remote station from the base station using a layer 2 bit which is distinct from layer 2 bits used to carry the message; and sending a status report to said base station, wherein said status request contains a second layer 2 bit which specifies whether the remote station should send the status report on a reservation basis or on a contention basis.
Claim 3
Dependent Claim
20 words
A method according to claim 1, wherein said layer 2 information is the Busy/Reserved/Idle portion of shared channel feedback information.
Claim 4
Dependent Claim
27 words
A method according to claim 1, wherein said status request uses layer 2 information to identify said remote station to which said status request is being sent.
Claim 5
Dependent Claim
22 words
A method according to claim 3, wherein said layer 2 information is a partial echo (PE) portion of shared channel feedback information.
Claim 6
Dependent Claim
97 words
A base station for use in a cellular communication system, comprising: means for transmitting a message to a mobile station using layer 2 frames; means for transmitting a status request to the mobile station using a layer 2 bit which is distinct from layer 2 bits used to carry the message; means for receiving a status report from said mobile station in response to said status request, wherein said status request contains a second layer 2 bit which specifies whether the mobile station should send the status report on a reservation basis or on a contention basis.
Claim 7
Dependent Claim
97 words
A base station for use in a cellular communication system, comprising: means for transmitting a message to a mobile station using layer 2 frames; means for transmitting a status request to the mobile station using a layer 2 bit which is distinct from layer 2 bits used to carry the message; means for receiving a status report from said mobile station in response to said status request, wherein said status request contains a second layer 2 bit which specifies whether the mobile station should send the status report on a reservation basis or on a contention basis.
Claim 8
Dependent Claim
21 words
A base station according to claim 5, wherein said layer 2 information is a busy/reserved/idle portion of shared channel feedback information.
Claim 9
Dependent Claim
103 words
A mobile station for use in a cellular communication system, comprising: means for receiving a message from said cellular system which is transmitted using layer 2 frames; means for receiving a status request from said cellular system which is transmitted using a layer 2 bit which is distinct from layer 2 bits used to carry the message; means for transmitting a status report to said cellular system in response to said status request, wherein said status request contains a second layer 2 bit which specifies whether the mobile station should send the status report on a reservation basis or on a contention basis.
Claim 10
Dependent Claim
103 words
A mobile station for use in a cellular communication system, comprising: means for receiving a message from said cellular system which is transmitted using layer 2 frames; means for receiving a status request from said cellular system which is transmitted using a layer 2 bit which is distinct from layer 2 bits used to carry the message; means for transmitting a status report to said cellular system in response to said status request, wherein said status request contains a second layer 2 bit which specifies whether the mobile station should send the status report on a reservation basis or on a contention basis.
Claim 11
Dependent Claim
21 words
A mobile station according to claim 7, wherein said layer 2 information is a busy/reserved/idle portion of shared channel feedback information.
Claim 12
Dependent Claim
23 words
A mobile station according to claim 7, wherein said mobile station transmits said status report to a base station in said cellular system.
Claim 13
Dependent Claim
26 words
A mobile station according to claim 7, wherein said status request includes layer 2 information to indicate which mobile station is being sent a status request.
Claim 14
Dependent Claim
22 words
A mobile station according to claim 10, wherein said layer 2 information are a partial echo portion of shared channel feedback information.
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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) | 2000-05-26 | 2000-11-25 | 2001-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-26 | 2004-11-25 | 2005-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-26 | 2008-11-25 | 2009-05-27 | $7700.00 | Window Closed / Lapsed |