US6781999B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broadcasting and multicasting in wireless communication
Assignee: Ericsson EVDO Inc
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Filing: 2001-07-23
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Granted: 2004-08-24
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Expires: 2021-07-23
Abstract
Abstract In a radio access network, multicast packets are delivered each identified by a multicast network layer address representing a multicast group of access terminals. The multicast packets are delivered in one or more air link frames using a common control channel that is shared among access terminals in a sector. Each airlink frame carries a multicast air link address that identifies the multicast group of terminals.
Inventors
- 👤 M. Vedat Eyuboglu
- 👤 Dae-Young Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:34
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/02; H04L12/16; H04L12/18; H04L12/185; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2625; H04L12/1836; H04L12/28; H04L12/46; H04L12/4633; H04M; H04M3/00; H04M3/42; H04M3/487; H04L12/1863; H04L12/1868; H04L12/189; H04M2203/00; H04M2203/20; H04M2203/205; H04M2207/00; H04M2207/18; H04W; H04W4/00; H04W4/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
67 words
A method comprising in a radio access network, delivering multicast packets each identified by a multicast network layer address representing a multicast group of access terminals, the multicast packets being delivered in one or more air link frames using a common channel that is shared among access terminals in a sector, each airlink frame carrying a multicast air link address that identifies the multicast group of terminals.
Claim 2
Independent Claim
67 words
A method comprising in a radio access network, delivering multicast packets each identified by a multicast network layer address representing a multicast group of access terminals, the multicast packets being delivered in one or more air link frames using a common channel that is shared among access terminals in a sector, each airlink frame carrying a multicast air link address that identifies the multicast group of terminals.
Claim 3
Dependent Claim
16 words
The method of claim 1 , wherein the common channel comprises the control channel of IS-856.
Claim 4
Dependent Claim
21 words
The method of claim 1 , wherein the multicast air link address comprises a broadcast or multicast Access Terminal Identifier (ATI).
Claim 5
Dependent Claim
20 words
The method of claim 1 , wherein the multicast packets are sent to the radio access network from a router.
Claim 6
Dependent Claim
32 words
The method of claim 4 , wherein the router comprises a packet data serving node, and the multicast packets are sent to the radio access network using a multicast network layer tunnel.
Claim 7
Dependent Claim
22 words
The method of claim 5 , wherein the network layer tunnel comprises an IP tunnel using a Generic Routing Encapsulation (GRE) protocol.
Claim 8
Dependent Claim
29 words
The method of claim 5 , wherein the router uses a stateless simple link layer protocol to frame the network layer multicast packets for transmission to the access terminals.
Claim 9
Dependent Claim
18 words
The method of claim 1 further including enabling an access terminal to join or leave a multicast group.
Claim 10
Dependent Claim
21 words
The method of claim 8 wherein an access terminal joins a multicast group by sending a message to a multicast router.
Claim 11
Dependent Claim
21 words
The method of claim 9 wherein the multicast router comprises a Packet Data Serving Node (PDSN) or a Home Agent (HA).
Claim 12
Independent Claim
34 words
The method of claims 9 and 10 wherein an access terminal joins a multicast group by registering out-of-band at a web server, and the multicast router obtains the registration information from the web server.
Claim 13
Dependent Claim
24 words
The method of claim 11 wherein the packets are sent to the radio access network using a reliable protocol involving error detection and retransmission.
Claim 14
Independent Claim
55 words
A method comprising in a radio network, sending multicast packets from a router to a radio access network using a multicast network layer tunnel, the router comprising a packet data serving node and using a stateless simple link layer protocol to frame the network layer multicast packets for transmission to access terminals in a sector.
Claim 15
Independent Claim
55 words
A method comprising in a radio network, sending multicast packets from a router to a radio access network using a multicast network layer tunnel, the router comprising a packet data serving node and using a stateless simple link layer protocol to frame the network layer multicast packets for transmission to access terminals in a sector.
Claim 16
Dependent Claim
31 words
The method of claim 1 , wherein the radio access network sends a multicast page to multiple terminals in order to wake them up before the transmission of multicast data starts.
Claim 17
Dependent Claim
22 words
The method of claim 13 , wherein the network layer tunnel comprises an IP tunnel using a Generic Routing Encapsulation (GRE) protocol.
Claim 18
Dependent Claim
23 words
The method of claim 1 wherein said airlink frames are sent repetitively in multiple Control Channel Cycles in order to reach dormant terminals.
Claim 19
Independent Claim
57 words
A method comprising in a radio network, sending multicast packets from a router to a radio access network, the router using a stateless simple link layer protocol to frame the network layer multicast packets for transmission to access terminals in a sector, wherein the router comprises a Packet Data Serving Node (PDSN) or a Home Agent (HA).
Claim 20
Independent Claim
57 words
A method comprising in a radio network, sending multicast packets from a router to a radio access network, the router using a stateless simple link layer protocol to frame the network layer multicast packets for transmission to access terminals in a sector, wherein the router comprises a Packet Data Serving Node (PDSN) or a Home Agent (HA).
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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) | 2007-08-24 | 2008-02-23 | 2008-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-08-24 | 2012-02-23 | 2012-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-08-24 | 2016-02-23 | 2016-08-24 | $7700.00 | Window Closed / Lapsed |