US5949776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hierarchical communication system using premises, peripheral and vehicular local area networking
Assignee: Avago Technologies International Sales Pte Ltd
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Filing: 1997-08-12
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Granted: 1999-09-07
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Expires: 2017-08-12
Abstract
Abstract A hierarchical communication system is described in which wireless local area networks (LANs) exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. In a premises LAN, a series of radio base stations and a backbone LAN make up an infrastructure network. The infrastructure network and at least one mobile computing device make up a higher-power LAN, utilizing a frequency hopping protocol. A lower-power LAN allows for radio communication between a mobile computing device and peripheral devices, utilizing a single-frequency spread spectrum protocol. A vehicular LAN provides for short-range communication between a vehicle terminal and a portable terminal. When out of direct RF range of the premises LAN, the vehicle terminal maintains indirect communication when necessary with the premises LAN via one of several alternate RF channels. A microprocessor, located inside radio units which participate in multiple LAN's, selects the appropriate protocol, frequency band and power level for communicating through the network.
Inventors
- 👤 Ronald L. Mahany
- 👤 Guy J. West
- 👤 Alan G. Bunte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:50
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/30; H04W52/34; H04W52/343; G; G06; G06K; G06K17/00; G06K17/0022; G06K7/00; G06K7/10; G06K7/10544; G06K7/10554; G06K7/10594; G06K7/10683; G06K7/10702; G06K7/10712; G06K7/10722; G06K7/10821; G06K7/10841; G06K7/10851; G06K7/10881; G06K7/12; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/343; G07; G07F; G07F7/00; G07F7/02; G07G; G07G1/00; G07G1/0036; G07G1/0045; G08; G08C; G08C17/00; G08C17/02; H04L; H04L1/00; H04L1/0001; H04L1/0023; H04L1/0025; H04L1/0032; H04L1/12; H04L1/16; H04L1/1607; H04L1/1671; H04L1/1685; H04W52/38; H04W52/46; H04W88/00; H04W88/02; H04W88/06; G08C2201/00; G08C2201/20; H04B; H04B17/00; H04B17/0082; H04B17/0085; H04L69/00; H04L69/18; H04M; H04M7/00; H04M7/006; H04W52/02; H04W52/0209; H04W52/0261; H04W52/0287; H04W52/029; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
95 words
A communication network comprising: a first wireless network; a second wireless network independently operable from the first wireless network; an access point device operable on the first wireless network; a first wireless device selectively communicating with the access point device on the first wireless network; a second wireless device operable on the second wireless network to communicate with the first wireless device; and the first wireless device selectively communicating with the second wireless device on the second wireless network after communicating an indication of unavailability on the first wireless network to the access point device.
Claim 2
Dependent Claim
95 words
A communication network comprising: a first wireless network; a second wireless network independently operable from the first wireless network; an access point device operable on the first wireless network; a first wireless device selectively communicating with the access point device on the first wireless network; a second wireless device operable on the second wireless network to communicate with the first wireless device; and the first wireless device selectively communicating with the second wireless device on the second wireless network after communicating an indication of unavailability on the first wireless network to the access point device.
Claim 3
Dependent Claim
15 words
The communication network of claim 1 wherein the indication of unavailability comprises sleep mode registration.
Claim 4
Dependent Claim
22 words
The communication network of claim 2 wherein the first wireless device also conducts sleep mode registration to enter a power saving state.
Claim 5
Dependent Claim
25 words
The communication network of claim 1 wherein the access point device stores messages destined for the first wireless device after receiving the indication of unavailability.
Claim 6
Dependent Claim
36 words
The communication network of claim 1 wherein, after participating on the second wireless network, the first wireless device communicates an indication of availability on the first wireless network to resume participation on the first wireless network.
Claim 7
Dependent Claim
32 words
The communication network of claim 5 wherein, after resuming participation on the first wireless network, the access point device delivers stored messages to the first wireless device via the first wireless network.
Claim 8
Dependent Claim
20 words
The communication network of claim 1 wherein the first wireless device participates as a master on the second wireless network.
Claim 9
Dependent Claim
20 words
The communication network of claim 1 wherein the first wireless device participates as a slave on the first wireless network.
Claim 10
Dependent Claim
77 words
A communication network comprising: a first wireless link; a second wireless link independent from the first wireless link; an access point device; a first wireless device selectively communicating with the access point device on the first wireless link; a second wireless device operable on the second wireless link; and the first wireless device selectively communicating an indication of unavailability on the first wireless link prior to communicating on the second wireless link with the second wireless device.
Claim 11
Dependent Claim
77 words
A communication network comprising: a first wireless link; a second wireless link independent from the first wireless link; an access point device; a first wireless device selectively communicating with the access point device on the first wireless link; a second wireless device operable on the second wireless link; and the first wireless device selectively communicating an indication of unavailability on the first wireless link prior to communicating on the second wireless link with the second wireless device.
Claim 12
Dependent Claim
15 words
The communication network of claim 9 wherein the indication of unavailability comprises sleep mode registration.
Claim 13
Dependent Claim
22 words
The communication network of claim 10 wherein the first wireless device also conducts sleep mode registration to enter a power saving state.
Claim 14
Dependent Claim
25 words
The communication network of claim 9 wherein the access point device stores messages destined for the first wireless device after receiving the indication of unavailability.
Claim 15
Dependent Claim
36 words
The communication network of claim 9 wherein, after participating on the second wireless link, the first wireless device communicates an indication of availability on the first wireless link to resume participation on the first wireless link.
Claim 16
Dependent Claim
32 words
The communication network of claim 13 wherein, after resuming participation on the first wireless link, the access point device delivers stored messages to the first wireless device via the first wireless link.
Claim 17
Dependent Claim
28 words
The communication network of claim 9 wherein the first wireless device participates as a slave on the first wireless link and a master on the second wireless link.
Claim 18
Dependent Claim
89 words
In a communication network having an access point device, a first wireless channel, a second wireless channel, and a network device operable on the second wireless channel, a wireless device comprising: first transceiver circuitry that supports communication with the access point on the first wireless channel and that communicates an indication of unavailability on the first wireless channel; and second transceiver circuitry coupled to the first transceiver circuitry that communicates with the network device on the second wireless channel after the first transceiver circuitry communicates the indication of unavailability.
Claim 19
Dependent Claim
89 words
In a communication network having an access point device, a first wireless channel, a second wireless channel, and a network device operable on the second wireless channel, a wireless device comprising: first transceiver circuitry that supports communication with the access point on the first wireless channel and that communicates an indication of unavailability on the first wireless channel; and second transceiver circuitry coupled to the first transceiver circuitry that communicates with the network device on the second wireless channel after the first transceiver circuitry communicates the indication of unavailability.
Claim 20
Dependent Claim
15 words
The wireless device of claim 16 wherein the indication of unavailability comprises sleep mode registration.
Claim 21
Dependent Claim
24 words
The wireless device of claim 16 wherein the access point device stores messages destined for the wireless device after receiving the indication of unavailability.
Claim 22
Dependent Claim
35 words
The wireless device of claim 16 wherein, after participating on the second wireless channel, the wireless device communicates an indication of availability on the first wireless channel to resume participation on the first wireless channel.
Claim 23
Dependent Claim
35 words
The wireless device of claim 19 wherein, after resuming participation on the first wireless channel, the first transceiver circuitry is used to receive stored messages from the access point device via the first wireless channel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-09-06 | 2003-03-08 | 2003-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-06 | 2007-03-08 | 2007-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-06 | 2011-03-08 | 2011-09-07 | $7700.00 | Window Closed / Lapsed |