US6031832A
Expired / Lapsed
US
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Method and apparatus for improving performance of a packet communications system
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1996-11-27
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Granted: 2000-02-29
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Expires: 2016-11-27
Abstract
Abstract A communications system is provided that uses a multiple access packet reservation type of protocol. The physical channels required for the packet transfers are specially allocated to one mobile station (referred to as a "VIP MS"). The VIP MS has the exclusive priority to use these allocated physical channels for packet data as needed. Consequently, the VIP MS always has the negotiated bandwidth available for the packet transfers. Furthermore, since the VIP MS is given the highest exclusive priority to access these physical channels ("VIP priority"), by allocating a reserved random access channel dedicated to the VIP MS (e.g., on one allocated uplink channel), the variable random access delays experienced by prior systems no longer exist Since the VIP MS is always scheduled first for transmissions on the downlink, and reserved access is provided for the VIP MS on the uplink, only a constant delay period for the uplink and downlink is involved. In other words, the VIP MS is guaranteed both a bandwidth for the packet transfers and a constant uplink and downlink delay.
Inventors
- 👤 Dalibor Turina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:15
CPC Classifications
H; H04; H04W; H04W72/00; H04W72/04; H04W72/044; H04W28/00; H04W28/16; H04W28/18; H04W28/20; H04W28/24; H04W28/26; H04W74/00; H04W74/04; H04W74/08; H04W80/00
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
124 words
A method for improving performance of a mobile communications system that uses at least a multiple access packet reservation protocol, comprising the steps of: allocating to a first mobile station an exclusive use of at least a first channel in said mobile communications system, for carrying downlink packet traffic; reserving for said first mobile station a second channel in said mobile communications system, for enabling uncontended access by uplink packet traffic; allocating to said first mobile station an exclusive use of at least a third channel in said mobile communications system, for carrying said uplink packet traffic; and wherein said first mobile station has exclusive use of said first and third channels and reserved access to said second channel during a same service interval.
Claim 2
Independent Claim
124 words
A method for improving performance of a mobile communications system that uses at least a multiple access packet reservation protocol, comprising the steps of: allocating to a first mobile station an exclusive use of at least a first channel in said mobile communications system, for carrying downlink packet traffic; reserving for said first mobile station a second channel in said mobile communications system, for enabling uncontended access by uplink packet traffic; allocating to said first mobile station an exclusive use of at least a third channel in said mobile communications system, for carrying said uplink packet traffic; and wherein said first mobile station has exclusive use of said first and third channels and reserved access to said second channel during a same service interval.
Claim 3
Independent Claim
161 words
A method for improving performance of a mobile communications system that uses at least a multiple access packet reservation protocol, comprising the steps of: allocating to a first mobile station an exclusive priority for use of at least a first channel in said mobile communications system, for carrying downlink packet traffic; reserving for said first mobile station a second channel in said mobile communications system, for enabling uncontended access by uplink packet traffic; allocating to said first mobile station an exclusive priority for use of at least a third channel in said mobile communications system, for carrying said uplink packet traffic, said first mobile station having said exclusive priority for use of said first and third channels and reserved access to said second channel during a same service interval; and at least temporarily releasing at least one of said first and third channels for other traffic during a period when packet traffic of said first mobile station is not being carried.
Claim 4
Independent Claim
161 words
A method for improving performance of a mobile communications system that uses at least a multiple access packet reservation protocol, comprising the steps of: allocating to a first mobile station an exclusive priority for use of at least a first channel in said mobile communications system, for carrying downlink packet traffic; reserving for said first mobile station a second channel in said mobile communications system, for enabling uncontended access by uplink packet traffic; allocating to said first mobile station an exclusive priority for use of at least a third channel in said mobile communications system, for carrying said uplink packet traffic, said first mobile station having said exclusive priority for use of said first and third channels and reserved access to said second channel during a same service interval; and at least temporarily releasing at least one of said first and third channels for other traffic during a period when packet traffic of said first mobile station is not being carried.
Claim 5
Dependent Claim
17 words
The method of claim 1 or 2, wherein said mobile communications system comprises a TDMA communications system.
Claim 6
Dependent Claim
18 words
The method of claim 1 or 2, wherein said mobile communications system comprises a digital cellular radio system.
Claim 7
Dependent Claim
16 words
The method of claim 1 or 2, wherein said mobile communications system comprises a GSM system.
Claim 8
Dependent Claim
20 words
The method of claim 1 or 2, wherein said multiple access packet reservation protocol comprises a slotted-ALOHA multiple access protocol.
Claim 9
Dependent Claim
16 words
The method of claim 1 or 2, wherein said first channel comprises a first physical channel.
Claim 10
Dependent Claim
16 words
The method of claim 1 or 2, wherein said third channel comprises a third physical channel.
Claim 11
Dependent Claim
17 words
The method of claim 1 or 2, wherein said first and third channel comprise a physical channel.
Claim 12
Dependent Claim
16 words
The method of claim 1 or 2, wherein said second channel comprises a random access channel.
Claim 13
Dependent Claim
18 words
The method of claim 1 or 2, wherein said second channel comprises a Packet Random Access Channel (PRACH).
Claim 14
Dependent Claim
22 words
The method of claim 1 or 2, wherein said first channel and said third channel comprise a Packet Data Traffic Channel (PDTCH).
Claim 15
Dependent Claim
34 words
The method of claim 1 or 2, wherein said step of reserving a second channel comprises dimensioning a random access channel such that a rate of random access collisions between uplink traffic is reduced.
Claim 16
Dependent Claim
36 words
The method of claim 1 or 2, further comprising the steps of: handing over a mobile station from a first cell to a second cell; and repeating said allocating and reserving steps for said second cell.
Claim 17
Dependent Claim
48 words
The method of claim 1 or 2, further comprising the steps of: handing over a mobile station from a first cell to a second cell; and reassigning channels corresponding to said first channel, said second channel, and said third channel for exclusive priority use by said mobile station.
Claim 18
Independent Claim
217 words
A method for conveying packet traffic between a mobile communications network and a wired communications network, comprising the steps of: allocating to a first mobile station an exclusive priority for use of at least a first channel in said mobile communications network, for carrying downlink packet traffic, said first channel having a first negotiated bandwidth and a first processing delay; reserving a second channel in said mobile communications network, for enabling uncontended access to said mobile communications network by uplink packet traffic, said second channel having a second processing delay; allocating to said first mobile station an exclusive priority for use of at least a third channel in said mobile communications network, for carrying said uplink packet traffic, said third channel having a third negotiated bandwidth and a third processing delay; translating each of said first and third negotiated bandwidths into a respective associated first and third wired communications network bandwidth; translating each of said first, second and third processing delays into a respective associated first, second and third wired communications network processing delay; and said mobile communications network requesting of said wired communications network allocation of at least one of said first and third wired network bandwidths, and at least one of said first, second and third wired processing delays, for conveying said packet traffic therebetween.
Claim 19
Independent Claim
217 words
A method for conveying packet traffic between a mobile communications network and a wired communications network, comprising the steps of: allocating to a first mobile station an exclusive priority for use of at least a first channel in said mobile communications network, for carrying downlink packet traffic, said first channel having a first negotiated bandwidth and a first processing delay; reserving a second channel in said mobile communications network, for enabling uncontended access to said mobile communications network by uplink packet traffic, said second channel having a second processing delay; allocating to said first mobile station an exclusive priority for use of at least a third channel in said mobile communications network, for carrying said uplink packet traffic, said third channel having a third negotiated bandwidth and a third processing delay; translating each of said first and third negotiated bandwidths into a respective associated first and third wired communications network bandwidth; translating each of said first, second and third processing delays into a respective associated first, second and third wired communications network processing delay; and said mobile communications network requesting of said wired communications network allocation of at least one of said first and third wired network bandwidths, and at least one of said first, second and third wired processing delays, for conveying said packet traffic therebetween.
Claim 20
Dependent Claim
14 words
The method of claim 16, wherein said mobile communications network comprises a GSM network.
Claim 21
Dependent Claim
14 words
The method of claim 16, wherein said wired communications network comprises an Internet network.
Claim 22
Independent Claim
115 words
A method for use in a cellular packet data communications system that uses a plurality of shared packet data channels, for improving an obtainable quality of service, comprising the steps of: assigning simultaneously for prioritized use to a first mobile terminal, through negotiation, a plurality of uplink and downlink packet data channels of said plurality of shared packet data channels; and releasing said assigned plurality of uplink and downlink packet data channels in response to a signal from at least one of said first mobile terminal and a network in said cellular packet data communications system, said first mobile terminal thereby being guaranteed use of said assigned plurality of uplink and downlink packet data channels.
Claim 23
Independent Claim
115 words
A method for use in a cellular packet data communications system that uses a plurality of shared packet data channels, for improving an obtainable quality of service, comprising the steps of: assigning simultaneously for prioritized use to a first mobile terminal, through negotiation, a plurality of uplink and downlink packet data channels of said plurality of shared packet data channels; and releasing said assigned plurality of uplink and downlink packet data channels in response to a signal from at least one of said first mobile terminal and a network in said cellular packet data communications system, said first mobile terminal thereby being guaranteed use of said assigned plurality of uplink and downlink packet data channels.
Claim 24
Dependent Claim
33 words
The method of claim 19, wherein at least a second mobile terminal accesses said assigned plurality of uplink and downlink packet data channels during an idle traffic period for said first mobile terminal.
Claim 25
Dependent Claim
29 words
The method of claim 19, wherein said first mobile station uses said plurality of uplink and downlink packet data channels and all other packet data traffic thereon is interrupted.
Claim 26
Dependent Claim
20 words
The method of claim 19, wherein scheduling of said uplink packet data traffic is controlled by an uplink state flag.
Claim 27
Dependent Claim
43 words
The method of claim 19, further comprising the step of allocating a separate reserved access sub-channel to said first mobile terminal to avoid collisions with traffic from a mobile terminal other than said first mobile terminal, and thus reducing uplink channel access delays.
Claim 28
Dependent Claim
17 words
The method of claim 23, wherein said separate reserved access sub-channel comprises a reserved random access sub-channel.
Claim 29
Dependent Claim
114 words
A mobile communications system that uses at least a multiple access packet reservation protocol, comprising: a first mobile terminal means for transmitting and receiving packet traffic, said first mobile terminal means being allocated an exclusive use of at least a first uplink channel and a second downlink channel in said mobile communications system; an access channel on an uplink of said mobile communications system; a reservation means for reserving uncontended access to said access channel for said first mobile terminal means; and wherein said first mobile terminal means has exclusive use of said first uplink channel and said second downlink channel and reserved uncontended access to said access channel during a same service interval.
Claim 30
Dependent Claim
114 words
A mobile communications system that uses at least a multiple access packet reservation protocol, comprising: a first mobile terminal means for transmitting and receiving packet traffic, said first mobile terminal means being allocated an exclusive use of at least a first uplink channel and a second downlink channel in said mobile communications system; an access channel on an uplink of said mobile communications system; a reservation means for reserving uncontended access to said access channel for said first mobile terminal means; and wherein said first mobile terminal means has exclusive use of said first uplink channel and said second downlink channel and reserved uncontended access to said access channel during a same service interval.
Claim 31
Dependent Claim
13 words
The mobile communications system of claim 25, further comprising a TDMA communications system.
Claim 32
Dependent Claim
14 words
The mobile communications system of claim 25, further comprising a digital cellular radio system.
Claim 33
Dependent Claim
16 words
The mobile communications system of claim 25, wherein said access channel comprises a random access sub-channel.
Claim 34
Dependent Claim
19 words
The mobile communications system of claim 25, wherein said first mobile terminal means comprises a prioritized (VIP) mobile station.
Claim 35
Dependent Claim
15 words
The method of claim 1, wherein said same service interval comprises a service activation period.
Claim 36
Dependent Claim
27 words
The method of claim 2, wherein said exclusive priority corresponds to a priority level, among a plurality of priority levels, associated with a class of mobile stations.
Claim 37
Dependent Claim
38 words
The method of claim 2, wherein the at least one of said first and third channels that are at least temporarily released for other traffic continue to be allocated to said first mobile station during the released period.
Claim 38
Dependent Claim
20 words
The method of claim 16, wherein said exclusive priority is a priority level corresponding to a class of mobile stations.
Claim 39
Dependent Claim
16 words
The method of claim 16, wherein said second channel is reserved for said first mobile station.
Claim 40
Independent Claim
128 words
A method for improving performance of a mobile communications system that uses at least a multiple access packet reservation protocol, comprising the steps of: allocating to a first mobile station an exclusive use of at least a first channel in said mobile communications system, for carrying downlink packet traffic; allocating to said first mobile station an exclusive use of at least a second channel in said mobile communications system, for carrying uplink packet traffic; reserving for said first mobile station a third channel in said mobile communications system, for enabling uncontended access by said uplink packet traffic over said second channel; and wherein said first mobile station has exclusive use of said first and second channels and reserved access to said third channel during a same service interval.
Claim 41
Independent Claim
128 words
A method for improving performance of a mobile communications system that uses at least a multiple access packet reservation protocol, comprising the steps of: allocating to a first mobile station an exclusive use of at least a first channel in said mobile communications system, for carrying downlink packet traffic; allocating to said first mobile station an exclusive use of at least a second channel in said mobile communications system, for carrying uplink packet traffic; reserving for said first mobile station a third channel in said mobile communications system, for enabling uncontended access by said uplink packet traffic over said second channel; and wherein said first mobile station has exclusive use of said first and second channels and reserved access to said third channel during a same service interval.
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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) | 2003-02-28 | 2003-08-30 | 2004-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-28 | 2007-08-30 | 2008-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-28 | 2011-08-30 | 2012-02-29 | $7700.00 | Window Closed / Lapsed |