Patent US5729531A successfully refreshed from Google Patents.
US5729531A
Expired / Lapsed
US
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Bandwidth allocation
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1995-10-18
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Granted: 1998-03-17
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Expires: 2015-10-18
Abstract
Abstract A method for reassigning mobile stations a new phase within a channel is disclosed. In a communication system, a plurality of mobile stations attempt to communicate on a limited number of channels. The invention first uses a general allocation method to approximately evenly distribute the mobile stations on the available channels. After a mobile station begins active communication on the system, a second allocation method is used to change the phase of some mobile stations on a channel which has become heavily loaded. In addition, a message can also be sent to mobile stations assigned to but not yet actively communicating on the heavily loaded channel indicating that the mobile stations should change to a new channel.
Inventors
- 👤 Alex Krister Raith
- 👤 Alan Eric Sicher
- 👤 Lars Billstrom
- 👤 John Diachina
- 👤 Raymond C. Henry
- 👤 Karl-Erik Andersson
- 👤 Steven Prokup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:08
CPC Classifications
H; H04; H04W; H04W72/00; H04W72/50; H04W72/52; H04W36/00; H04W36/16; H04W36/22; H04W72/20; H04W72/23; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
A method for assigning mobile stations to phases within a channel in a communication system, comprising the steps of: distributing mobile stations among available channels prior to or after registration so that said mobile stations are approximately evenly distributed before said mobile stations begin communicating with the system; assigning mobile stations to predetermined phases within their assigned channel; and reassigning mobile stations to different phases within their assigned channel to further distribute the mobile stations once the mobile stations begin communicating with the system.
Claim 2
Independent Claim
84 words
A method for assigning mobile stations to phases within a channel in a communication system, comprising the steps of: distributing mobile stations among available channels prior to or after registration so that said mobile stations are approximately evenly distributed before said mobile stations begin communicating with the system; assigning mobile stations to predetermined phases within their assigned channel; and reassigning mobile stations to different phases within their assigned channel to further distribute the mobile stations once the mobile stations begin communicating with the system.
Claim 3
Dependent Claim
20 words
A method according to claim 1, wherein said distribution of mobile stations is based on attributes of the mobile stations.
Claim 4
Dependent Claim
20 words
A method according to claim 1, wherein said distribution of each mobile station is based on a mobile station identity.
Claim 5
Dependent Claim
30 words
A method according to claim 1, wherein some of said mobile stations are in a sleep mode after registration and therefore have a minimum bandwidth communication path with the system.
Claim 6
Dependent Claim
33 words
A method according to claim 1, wherein some of said mobile stations are reading all timeslots after registering with the system and therefore have a maximum bandwidth communication path activated with the system.
Claim 7
Dependent Claim
17 words
A method according to claim 1, wherein said phases relate to time slots within a TDMA frame.
Claim 8
Dependent Claim
132 words
In a wireless packet data communication system wherein multiple mobile stations transmit packets of data on a single TDMA channel, a method comprising the steps of: providing a plurality of TDMA channels on a single frequency including said single TDMA channel; dividing a plurality of mobile stations among said plurality of TDMA channels to achieve substantially even loading of each of said plurality of TDMA channels whereby said multiple mobile stations are assigned to said single TDMA channel; transmitting, by at least some of said multiple mobile stations on said single TDMA channel; evaluating loading of said single TDMA channel; and selectively reassigning at least one of said multiple mobile stations either to another of said plurality of TDMA channels on said single frequency or to a TDMA channel on another frequency.
Claim 9
Dependent Claim
132 words
In a wireless packet data communication system wherein multiple mobile stations transmit packets of data on a single TDMA channel, a method comprising the steps of: providing a plurality of TDMA channels on a single frequency including said single TDMA channel; dividing a plurality of mobile stations among said plurality of TDMA channels to achieve substantially even loading of each of said plurality of TDMA channels whereby said multiple mobile stations are assigned to said single TDMA channel; transmitting, by at least some of said multiple mobile stations on said single TDMA channel; evaluating loading of said single TDMA channel; and selectively reassigning at least one of said multiple mobile stations either to another of said plurality of TDMA channels on said single frequency or to a TDMA channel on another frequency.
Claim 10
Dependent Claim
57 words
The method of claim 7 wherein said step of selectively reassigning further comprises the step of: reassigning said at least one of said multiple mobile stations to said another of said plurality of TDMA channels on said single frequency when said at least one of said multiple mobile stations has begun transmitting on said single TDMA channel.
Claim 11
Dependent Claim
53 words
The method of claim 7 wherein said step of selectively reassigning further comprises the steps of: reassigning said at least one of said multiple mobile stations to said TDMA channel on another frequency when said at least one of said multiple mobile stations has not yet begun transmitting on said single TDMA channel.
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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) | 2001-03-16 | 2001-09-15 | 2002-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-16 | 2005-09-15 | 2006-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-16 | 2009-09-15 | 2010-03-17 | $7700.00 | Window Closed / Lapsed |