Patent US6104709A successfully refreshed from Google Patents.
US6104709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel assignment within a broad-band communication system
Assignee: Google Technology Holdings LLC
•
Filing: 1998-07-17
•
Granted: 2000-08-15
•
Expires: 2018-07-17
Abstract
Abstract Remote units (113-117) that wish to receive a multicast session, monitor a multicast advertisement message on a system broadcast channel to determine a session to receive. Once a remote unit (113-117) requests participation in the multicast event, a common supplemental channel (205) is assigned to the remote unit (113-117), and the multicast session is broadcast to all remote units (113-117) currently participating in the multicast event. The common supplemental channel (205) utilizes two unique spreading codes for channel assignment, with one of the spreading codes being a function of the multicast session address (501) that is broadcast by the server (120).
Inventors
- 👤 Joseph Rinchiuso
- 👤 Kenneth A. Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:57
CPC Classifications
H; H04; H04J; H04J13/00; H04J13/0007; H04J13/004; H04J13/0048; H04L; H04L12/00; H04L12/02; H04L12/16; H04L12/18; H04W; H04W4/00; H04W4/06; H04W48/00; H04W48/16; H04W72/00; H04W72/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
A method for channel assignment within a broad-band communication system, the method comprising the steps of: determining an Internet Protocol address for a multicast transmission; assigning a first remote unit a first code having the Internet Protocol address embedded within the long code such that multiple bits of the Internet Protocol address are utilized as a group-specific long code; assigning a second remote unit a first spreading code based on the address for the multicast transmission; and assigning the first and the second remote unit a second spreading code.
Claim 2
Independent Claim
89 words
A method for channel assignment within a broad-band communication system, the method comprising the steps of: determining an Internet Protocol address for a multicast transmission; assigning a first remote unit a first code having the Internet Protocol address embedded within the long code such that multiple bits of the Internet Protocol address are utilized as a group-specific long code; assigning a second remote unit a first spreading code based on the address for the multicast transmission; and assigning the first and the second remote unit a second spreading code.
Claim 3
Dependent Claim
37 words
The method of claim 1 wherein the step of assigning the first and the second remote unit the second spreading code comprises the step of assigning the first and the second remote unit a common Walsh code.
Claim 4
Dependent Claim
38 words
The method of claim 1 further comprising the step of transmitting a multicast session to the first and the second remote unit over an air interface via a channel defined by the first and the second spreading codes.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein the step of assigning the first remote unit the first spreading code comprises the step of assigning the first remote unit a long code.
Claim 6
Dependent Claim
107 words
In a communication system where a plurality of channels are transmitted simultaneously at the same radio frequency and are distinguishable only by a spreading code, a method for channel assignment comprising the steps of: determining a first address for a first multicast transmission; determining a second address for a second multicast transmission; assigning a first plurality of remote units a first spreading code having the first address embedded within the long code such that multiple bits of the address are utilized as a group-specific long code; and assigning a second plurality of remote units a second spreading code based on the address for the second multicast transmission.
Claim 7
Dependent Claim
107 words
In a communication system where a plurality of channels are transmitted simultaneously at the same radio frequency and are distinguishable only by a spreading code, a method for channel assignment comprising the steps of: determining a first address for a first multicast transmission; determining a second address for a second multicast transmission; assigning a first plurality of remote units a first spreading code having the first address embedded within the long code such that multiple bits of the address are utilized as a group-specific long code; and assigning a second plurality of remote units a second spreading code based on the address for the second multicast transmission.
Claim 8
Dependent Claim
32 words
The method of claim 5 wherein the step of determining the first address for the first multicast transmission comprises the step of determining an Internet Protocol address for the first multicast transmission.
Claim 9
Dependent Claim
33 words
The method of claim 5 further comprising the step of assigning the first plurality of remote units a third spreading code and assigning the second plurality of remote units a fourth spreading code.
Claim 10
Dependent Claim
48 words
The method of claim 7 wherein the step of assigning the first and the second plurality of remote units the third and the fourth spreading code, respectively, comprises the step of assigning the first and the second plurality of remote units a first and a second Walsh code.
Claim 11
Dependent Claim
35 words
The method of claim 5 further comprising the step of transmitting a first multicast session to the first plurality of remote units and transmitting a second multicast session to the second plurality of remote units.
Claim 12
Dependent Claim
35 words
The method of claim 5 wherein the step of assigning the first plurality of remote units the first spreading code comprises the step of assigning the first plurality of remote units a common long code.
References Cited (Backward Citations)
US5526352A
Cited
US5963556A
Cited
US5881131A
Cited
US5673265A
Cited
US5734652A
Cited
US5887252A
Cited
US5930248A
Cited
US5956368A
Cited
US5966384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-15 | 2004-02-14 | 2004-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-15 | 2008-02-14 | 2008-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-15 | 2012-02-14 | 2012-08-15 | $7700.00 | Window Closed / Lapsed |