Patent US6556835B1 successfully refreshed from Google Patents.
US6556835B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implementation of multicast messaging in a mobile telecommunications network
Assignee: Nokia Inc
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Filing: 2000-08-15
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Granted: 2003-04-29
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Expires: 2020-08-15
Abstract
Abstract In a method for multicasting in a radio network, having at least one base station and multiple mobile terminals, the broadcast message is broadcast from the base station, and the broadcast message is received at the mobile terminals. Furthermore, a broadcast message is formulated as a multicast message, and a token is delivered to a selected group of mobile terminals. The token is needed to recover the information of the multicast message. The selected group of mobile terminals includes at least two mobile terminals. The token is used by the selected group of mobile terminals to allow the reception and recovery of the multicast message.
Inventors
- 👤 Tommi Raivisto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:32
CPC Classifications
H; H04; H04W; H04W4/00; H04W4/06; H04L; H04L63/00; H04L63/04; H04L63/0428; H04L63/06; H04L63/065; H04W12/00; H04W12/03; H04W12/033; H04W76/00; H04W76/40; H04W4/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
109 words
A method for multicast in a mobile telecommunications network, which includes at least one base station and a plurality of mobile terminals, comprising: broadcasting the message from at least one base station, receiving the broadcast message at mobile terminals, formulating at least one broadcast message as a multicast message, delivering a token needed to recover the information of the multicast message to a selected first group of mobile terminals using point-to-point short messaging, the selected first group of mobile terminals including at least two mobile terminals, and using the delivered token at the selected first group of mobile terminals to allow the reception and recovery of the multicast message.
Claim 2
Independent Claim
109 words
A method for multicast in a mobile telecommunications network, which includes at least one base station and a plurality of mobile terminals, comprising: broadcasting the message from at least one base station, receiving the broadcast message at mobile terminals, formulating at least one broadcast message as a multicast message, delivering a token needed to recover the information of the multicast message to a selected first group of mobile terminals using point-to-point short messaging, the selected first group of mobile terminals including at least two mobile terminals, and using the delivered token at the selected first group of mobile terminals to allow the reception and recovery of the multicast message.
Claim 3
Dependent Claim
54 words
A method according to claim 1 , further comprising: delivering a cryptographic key as the token to the selected first group of mobile terminals, encrypting a broadcast message with the cryptographic key before broadcasting the broadcast message, decrypting the broadcast message at mobile terminals of the selected first group with the delivered cryptographic key.
Claim 4
Dependent Claim
24 words
A method according to claim 2 , further comprising delivering the cryptographic key to the selected first group of mobile terminals with point-to-point-short messages.
Claim 5
Dependent Claim
17 words
A method according to claim 2 , further comprising storing the cryptographic key at the mobile terminals.
Claim 6
Dependent Claim
21 words
A method according to claim 2 , further comprising storing the cryptographic key in respective SIM cards of the mobile terminals.
Claim 7
Dependent Claim
27 words
A method according to claim 2 , further comprising changing the cryptographic key and delivering the new cryptographic key to a selected second group of mobile terminals.
Claim 8
Dependent Claim
24 words
A method according to claim 6 , wherein the selected second group of mobile terminals differs from the selected first group of mobile terminals.
Claim 9
Dependent Claim
39 words
A method according to claim 1 , further comprising: identifying the multicast message by a message identifier attached to the message and choosing the cryptographic key relating to the message based on the message identifier of the multicast message.
Claim 10
Dependent Claim
43 words
A method according to claim 1 , further comprising: delivering an enabling command to the selected first group of mobile terminals as the token, and enabling the reception and recovery of the multicast message at mobile terminals which have received the enabling command.
Claim 11
Dependent Claim
25 words
A method according to claim 9 , further comprising delivering the enabling command to the selected first group of mobile terminals with point-to-point short messages.
Claim 12
Dependent Claim
35 words
A method according to claim 9 , further comprising enabling the reception and recovery of the multicast message at the selected first group of mobile terminals by tuning the mobile terminals to the correct channel.
Claim 13
Dependent Claim
17 words
A method according to claim 1 , further comprising transmitting the multicast message in short message form.
Claim 14
Dependent Claim
79 words
An arrangement for multicast in a mobile telecommunications network, comprising: a message source for generating broadcast messages, a broadcasting entity for controlling the broadcasting of the broadcast messages, base stations which broadcast the broadcast messages, mobile terminals which receive the broadcast messages, a delivery unit for delivering a token to selected mobile terminals via point-to-point short messages, and an enabling unit for enabling multicast message reception and recovery of broadcast messages at the selected mobile terminals using the token.
Claim 15
Dependent Claim
79 words
An arrangement for multicast in a mobile telecommunications network, comprising: a message source for generating broadcast messages, a broadcasting entity for controlling the broadcasting of the broadcast messages, base stations which broadcast the broadcast messages, mobile terminals which receive the broadcast messages, a delivery unit for delivering a token to selected mobile terminals via point-to-point short messages, and an enabling unit for enabling multicast message reception and recovery of broadcast messages at the selected mobile terminals using the token.
Claim 16
Dependent Claim
64 words
An arrangement according to claim 13 , further comprising: a delivery unit for delivering a cryptographic key as the token to the selected mobile terminals, storage units for storing the delivered cryptographic key at respective mobile terminals, an encryption unit for encrypting the broadcast messages intended for multicast, and decryption units at respective mobile terminals for decrypting the encrypted messages using the cryptographic key.
Claim 17
Dependent Claim
15 words
An arrangement according to claim 13 , wherein the broadcast messages are cell broadcast messages.
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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) | 2006-04-28 | 2006-10-28 | 2007-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-04-28 | 2010-10-28 | 2011-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-04-28 | 2014-10-28 | 2015-04-29 | $7700.00 | Window Closed / Lapsed |