Patent US2167303A successfully refreshed from Google Patents.
Patent US6532227B1 successfully refreshed from Google Patents.
US6532227B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
General packet radio service
Assignee: Nokia Technologies Oy
•
Filing: 1998-04-20
•
Granted: 2003-03-11
•
Expires: 2018-04-20
Abstract
Abstract A method for quickly de-allocating physical channels (PDCH) assigned to packet switched calls in a GPRS supporting GSM digital cellular telephone network. An PDCH de-allocation RLC/MAC control message is broadcast to listening mobile stations from a base station subsystem (BSS) and contains a temporary flow identity (TFI) which is recognised by the listening mobile stations (MS). The mobile stations respond by terminating packet switched data transmissions on the identified PDCHs. The RLC/MAC message also identifies the number of PDCH time slots which can be used before de-allocation must occur.
Inventors
- 👤 Arto Leppisaari
- 👤 Jari Hämäläinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:13
CPC Classifications
H; H04; H04W; H04W76/00; H04W76/30; H04W76/34; H04W48/00; H04W48/08; H04W48/12; H04W72/00; H04W72/20; H04W72/23; H04W74/00; H04W74/08; H04W74/0866
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
81 words
A method of de-allocating one or more physical channels previously assigned for packed switched transmission between a plurality of mobile stations (MS) and a base station subsystem (BSS), the method comprising broadcasting from the BSS an RLC/MAC control message having a message-type field identifying the message as a channel de-allocation message, and a de-allocated channel field identifying the physical channel(s) to be de-allocated, wherein said control message is received and acted on by said plurality of MSs using said physical channels(s).
Claim 2
Independent Claim
81 words
A method of de-allocating one or more physical channels previously assigned for packed switched transmission between a plurality of mobile stations (MS) and a base station subsystem (BSS), the method comprising broadcasting from the BSS an RLC/MAC control message having a message-type field identifying the message as a channel de-allocation message, and a de-allocated channel field identifying the physical channel(s) to be de-allocated, wherein said control message is received and acted on by said plurality of MSs using said physical channels(s).
Claim 3
Dependent Claim
30 words
A method according to claim 1 , wherein said RLC/MAC control message comprises a field defining the number of radio blocks after which the identified physical channel(s) must be de-allocated.
Claim 4
Dependent Claim
32 words
A method according to claim 1 , wherein said RLC/MAC control message contains a field identifying a carrier on which the MSs may transmit to the BSS a new packet channel request.
Claim 5
Dependent Claim
40 words
A method according to claim 3 , wherein said RLC/MAC control message contains a field identifying the time slots wherein a PRACH is allocated and where the MSs may transmit a random access request for data on the identified carrier.
Claim 6
Dependent Claim
42 words
A method according to claim 1 , wherein said RLC/MAC control message is transmitted on the same carrier frequency as was used for said de-allocated physical channel(s), thereby identifying the message to the MSs as relating to physical channels on said carrier.
Claim 7
Dependent Claim
37 words
A method according to claim 5 , wherein said RLC/MAC control message contains a field defining the time slot on said same carrier in which the BSS will transmit an uplink resource reassignment message to the MSs.
Claim 8
Dependent Claim
37 words
A method according to claim 5 , wherein said RLC/MAC control message contains a field defining the time slot on said same carrier in which the BSS will transmit a downlink resource reassignment message to the MSs.
Claim 9
Dependent Claim
25 words
A method according to claim 1 , wherein said RLC/MAC control message contains a temporary flow identity field which conveys a temporary flow identity (TFI).
Claim 10
Dependent Claim
31 words
A method according to claim 8 , wherein said TFI is stored in a memory of the MSs enabling the MSs to recognise the RLC/MAC control message as a broadcast message.
Claim 11
Dependent Claim
43 words
A method according to claim 1 , wherein the message-type field alerts each of the MSs to the fact that the message is a broadcast message to be acted upon by all MSs using the physical channel(s) identified in the de-allocated channel field.
Claim 12
Dependent Claim
84 words
Apparatus for de-allocating one or more physical channels previously assigned for packed switched transmission between a plurality of mobile stations (MS) and a base station subsystem (BSS), the apparatus comprising means for broadcasting from the BSS an RLC/MAC control message having a message type field identifying the message as a channel de-allocating message, and a de-allocated channel field identifying the physical channel(s) to be de-allocated, wherein all of said MSs using said physical channel(s) are arranged to receive and act upon said control message.
Claim 13
Dependent Claim
84 words
Apparatus for de-allocating one or more physical channels previously assigned for packed switched transmission between a plurality of mobile stations (MS) and a base station subsystem (BSS), the apparatus comprising means for broadcasting from the BSS an RLC/MAC control message having a message type field identifying the message as a channel de-allocating message, and a de-allocated channel field identifying the physical channel(s) to be de-allocated, wherein all of said MSs using said physical channel(s) are arranged to receive and act upon said control message.
Claim 14
Dependent Claim
26 words
A cellular telephone system comprising a BSS incorporating the apparatus of claim 11 and a plurality of MSs arranged to receive said broadcast RLC/MAC control message.
References Cited (Backward Citations)
EP0168927A2
Cited
US5396539A
Cited
US5257257A
Cited
US5430740A
Cited
US5396653A
Cited
US5535429A
Cited
US5577024A
Cited
US5521925A
Cited
WO1995016330A1
Cited
US5570353A
Cited
US5778318A
Cited
US5640395A
Cited
US5729541A
Cited
US5729534A
Cited
WO1996022665A1
Cited
US5784362A
Cited
EP0755164A2
Cited
US5790551A
Cited
US5726981A
Cited
US6009331A
Cited
US5606548A
Cited
US5708656A
Cited
US6031827A
Cited
US6031832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-03-10 | 2006-09-09 | 2007-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-03-10 | 2010-09-09 | 2011-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-03-10 | 2014-09-09 | 2015-03-11 | $7700.00 | Window Closed / Lapsed |