US5724515A
Expired / Lapsed
US
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Packet radio communication system
Assignee: EF Johnson Co
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Filing: 1996-03-06
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Granted: 1998-03-03
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Expires: 2016-03-06
Abstract
Abstract A packet radio communications system having a protocol which provides for nonstandard communications. The protocol providing a standard format indicator to indicate whether a received packet is in a standard or nonstandard format. If the standard format indicator signals a standard packet format, then all transceivers understand the standard information contained in the packet. Transceivers which do not understand the nonstandard format will ignore the nonstandard packet and discard it. The nonstandard format contains a format type code which is decoded along with the standard format indicator to distinguish one manufacturer's nonstandard packet format from another manufacturer's nonstandard packet format. The nonstandard protocol is expanded to manage multiple block packetized transmissions. A Message Continuance (MC) field is incorporated into the header information of the packet to signal the beginning, middle, and end of a multi-block transmission.
Inventors
- 👤 Keith W. Barnes
- 👤 Donald R. Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:38
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/06; H04L; H04L9/00; H04L9/40; H04L69/00; H04L69/14; H04L69/26; H04L69/30; H04L69/32; H04L69/322; H04L69/324
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
90 words
A packetized communication system, comprising a transmitter for transmitting packets, the packets comprising: a standard format indicator which is set to a first boolean state for the packets which conform to a predefined standard and which is set to a second boolean state for the packets which do not conform to the predefined standard; a format type indicator for identifying a type of nonstandard packet for the packets which do not conform to the predefined standard; and nonstandard information for the packets which do not conform to the predefined standard.
Claim 2
Dependent Claim
90 words
A packetized communication system, comprising a transmitter for transmitting packets, the packets comprising: a standard format indicator which is set to a first boolean state for the packets which conform to a predefined standard and which is set to a second boolean state for the packets which do not conform to the predefined standard; a format type indicator for identifying a type of nonstandard packet for the packets which do not conform to the predefined standard; and nonstandard information for the packets which do not conform to the predefined standard.
Claim 3
Dependent Claim
17 words
The packetized communication system of claim 1, wherein the standard format indicator comprises a single binary bit.
Claim 4
Dependent Claim
16 words
The packetized communication system of claim 1, wherein the packets further comprise a manufacturer's identification code.
Claim 5
Dependent Claim
30 words
The packetized communication system of claim 1, wherein the standard format indicator, the format type indicator, and the nonstandard information are encoded in a link control portion of a packet.
Claim 6
Dependent Claim
33 words
The packetized communication system of claim 3, wherein the standard format indicator, the format type indicator, nonstandard information, and the manufacturer's identification code are encoded in a link control portion of a packet.
Claim 7
Dependent Claim
13 words
The packetized communication system of claim 1, further comprising a message continuance field.
Claim 8
Dependent Claim
17 words
The packetized communication system of claim 6, wherein the message continuance field signals a multiple block message.
Claim 9
Dependent Claim
21 words
The packetized communication system of claim 7, wherein the message continuance field signals a first block of the multiple block message.
Claim 10
Dependent Claim
21 words
The packetized communication system of claim 7, wherein the message continuance field signals a last block of the multiple block message.
Claim 11
Dependent Claim
21 words
The packetized communication system of claim 7, wherein the message continuance field signals a middle block of the multiple block message.
Claim 12
Dependent Claim
22 words
The packetized communication system of claim 6, wherein the message continuance field signals a number of blocks in a multiple block message.
Claim 13
Independent Claim
62 words
A method for encoding a packet, comprising the steps of: encoding the packet with a standard format indicator to indicate if the packet conforms with a predefined standard; and if the packet does not conform to the predefined standard, then encoding the packet with a format type indicator to identify a type of nonstandard packet; and encoding the packet with nonstandard data.
Claim 14
Independent Claim
62 words
A method for encoding a packet, comprising the steps of: encoding the packet with a standard format indicator to indicate if the packet conforms with a predefined standard; and if the packet does not conform to the predefined standard, then encoding the packet with a format type indicator to identify a type of nonstandard packet; and encoding the packet with nonstandard data.
Claim 15
Dependent Claim
14 words
The method of claim 12, wherein the standard format indicator comprises a single bit.
Claim 16
Dependent Claim
28 words
The method of claim 12, wherein the standard format indicator, the format type indicator, and the nonstandard data are encoded in a link control portion of the packet.
Claim 17
Dependent Claim
18 words
The method of claim 12, further comprising the step of encoding the packet with a message continuance field.
Claim 18
Independent Claim
47 words
A method for encoding a packet in a packet radio communications system, comprising the steps of: encoding the packet with a message continuance field; and if the packet contains multiple blocks, then uniquely encoding a first block, last block, and any intermediate blocks as they are transmitted.
Claim 19
Independent Claim
47 words
A method for encoding a packet in a packet radio communications system, comprising the steps of: encoding the packet with a message continuance field; and if the packet contains multiple blocks, then uniquely encoding a first block, last block, and any intermediate blocks as they are transmitted.
Claim 20
Dependent Claim
90 words
A packetized communication system, comprising a receiver for receiving packets, the packets comprising: a standard format indicator which is set to a first boolean state for the packets which conform to a predefined standard and which is set to a second boolean state for the packets which do not conform to the predefined standard; a format type indicator for identifying a type of nonstandard packet for the packets which do not conform to the predefined standard; and nonstandard information for the packets which do not conform to the predefined standard.
Claim 21
Dependent Claim
90 words
A packetized communication system, comprising a receiver for receiving packets, the packets comprising: a standard format indicator which is set to a first boolean state for the packets which conform to a predefined standard and which is set to a second boolean state for the packets which do not conform to the predefined standard; a format type indicator for identifying a type of nonstandard packet for the packets which do not conform to the predefined standard; and nonstandard information for the packets which do not conform to the predefined standard.
Claim 22
Dependent Claim
17 words
The packetized communication system of claim 17, wherein the standard format indicator comprises a single binary bit.
Claim 23
Dependent Claim
16 words
The packetized communication system of claim 17, wherein the packets further comprise a manufacturer's identification code.
Claim 24
Dependent Claim
30 words
The packetized communication system of claim 17, wherein the standard format indicator, the format type indicator, and the nonstandard information are encoded in a link control portion of a packet.
Claim 25
Dependent Claim
34 words
The packetized communication system of claim 19, wherein the standard format indicator, the format type indicator, the nonstandard information, and the manufacturer's identification code are encoded in a link control portion of a packet.
Claim 26
Dependent Claim
13 words
The packetized communication system of claim 17, further comprising a message continuance field.
Claim 27
Dependent Claim
17 words
The packetized communication system of claim 22, wherein the message continuance field signals a multiple block message.
Claim 28
Dependent Claim
21 words
The packetized communication system of claim 23, wherein the message continuance field signals a first block of the multiple block message.
Claim 29
Dependent Claim
21 words
The packetized communication system of claim 23, wherein the message continuance field signals a last block of the multiple block message.
Claim 30
Dependent Claim
21 words
The packetized communication system of claim 23, wherein the message continuance field signals a middle block of the multiple block message.
Claim 31
Dependent Claim
22 words
The packetized communication system of claim 22, wherein the message continuance field signals a number of blocks in a multiple block message.
Claim 32
Independent Claim
53 words
A method for decoding a packet, comprising the steps of: decoding a standard format indicator to indicate if the packet conforms with a predefined standard; and if the packet does not conform to the predefined standard, then decoding a format type indicator to identify a type of nonstandard packet; and decoding nonstandard data.
Claim 33
Independent Claim
53 words
A method for decoding a packet, comprising the steps of: decoding a standard format indicator to indicate if the packet conforms with a predefined standard; and if the packet does not conform to the predefined standard, then decoding a format type indicator to identify a type of nonstandard packet; and decoding nonstandard data.
Claim 34
Dependent Claim
14 words
The method of claim 28, wherein the standard format indicator comprises a single bit.
Claim 35
Dependent Claim
27 words
The method of claim 28, wherein the standard format indicator, the format type indicator, and nonstandard data are decoded in a link control portion of the packet.
Claim 36
Dependent Claim
15 words
The method of claim 28, further comprising the step of decoding a message continuance field.
Claim 37
Independent Claim
43 words
A method for decoding a packet in a packet radio communications system, comprising the steps of: decoding a message continuance field; and if the packet contains multiple blocks, then receiving a first block, last block, and any intermediate blocks as they are transmitted.
Claim 38
Independent Claim
43 words
A method for decoding a packet in a packet radio communications system, comprising the steps of: decoding a message continuance field; and if the packet contains multiple blocks, then receiving a first block, last block, and any intermediate blocks as they are transmitted.
Claim 39
Independent Claim
87 words
A method for performing nonstandard link control operations between a plurality of transceivers, the method comprising: transceiving a packet comprising a standard format indicator to indicate if the packet conforms with a predefined standard; if the packet does not conform to the predefined standard, then performing the steps comprising: transceiving the packet comprising: a format type indicator to identify a type of nonstandard packet; and nonstandard link control data; and performing nonstandard link control operations based on the format type indicator, and the nonstandard link control data.
Claim 40
Independent Claim
87 words
A method for performing nonstandard link control operations between a plurality of transceivers, the method comprising: transceiving a packet comprising a standard format indicator to indicate if the packet conforms with a predefined standard; if the packet does not conform to the predefined standard, then performing the steps comprising: transceiving the packet comprising: a format type indicator to identify a type of nonstandard packet; and nonstandard link control data; and performing nonstandard link control operations based on the format type indicator, and the nonstandard link control data.
Claim 41
Dependent Claim
14 words
The method of claim 33, wherein the standard format indicator comprises a single bit.
Claim 42
Dependent Claim
30 words
The method of claim 33, wherein the standard format indicator, the format type indicator, and the nonstandard link control data are encoded in a link control portion of the packet.
Claim 43
Independent Claim
40 words
A method for time slot reservation in a carrier sense multiple access system, comprising the steps of: for single block transmissions, signalling an idle channel; and for multiple block transmissions, signalling a busy channel until a last block is detected.
Claim 44
Independent Claim
40 words
A method for time slot reservation in a carrier sense multiple access system, comprising the steps of: for single block transmissions, signalling an idle channel; and for multiple block transmissions, signalling a busy channel until a last block is detected.
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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) | 2001-03-02 | 2001-09-01 | 2002-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-02 | 2005-09-01 | 2006-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-02 | 2009-09-01 | 2010-03-03 | $7700.00 | Window Closed / Lapsed |