US6212176B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital control channels having logical channels for multiple access radiocommunication
Assignee: Telefonaktiebolaget LM Ericsson AB
•
Filing: 1997-01-21
•
Granted: 2001-04-03
•
Expires: 2017-01-21
Abstract
Abstract A communications system in which information is transmitted in successive time slots grouped into a plurality of superframes which are, in turn, grouped into a plurality of hyperframes. A remote station is assigned to one of the time slots in each of the superframes for paging the remote station, each hyperframe including at least two superframes, and the information sent in the assigned time slot in one superframe in each hyperfame is repeated in the assigned time slot in the other superframe(s) in each hyperframe. Each superframe can include a plurality of time slots used for sending paging messages to remote stations, grouped into a plurality of successive paging frames, and the time slot to which the remote station is assigned is included once in every paging frame. Also, each superframe may include time slots comprising a logical channel for broadcast control information and time slots comprising a logical paging channel. Information sent in the assigned time slot may direct the remote station to read the broadcast control information, and the information may have been encoded according to an error correcting code and include a plurality of bits having polarities that are inverses of cyclic redundancy check bits produced by the encoding. Also, the broadcast control information may comprise special messages that are included in respective time slots comprising a logical special message channel, the time slots of the special message channel may be grouped in successive SMS frames, and the SMS frames may be synchronized to start with a start of a superframe.
Inventors
- 👤 Håkan Clas Andersson
- 👤 John Walter Diachina
- 👤 Bengt Persson
- 👤 Alex Krister Raith
- 👤 Anthony J. Sammarco
- 👤 Francois Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:54
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0061; H04J; H04J3/00; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2643; H04B7/2656; H04L1/0041; H04L1/0057; H04L1/0059; H04L1/0072; H04L1/0078; H04L1/0083; H04L1/08; H04L1/12; H04L1/16; H04L1/1607; H04L1/1614; H04L1/18; H04L1/1809; H04L1/20; H04L63/00; H04L63/04; H04L63/0428; H04W; H04W12/00; H04W12/03; H04W12/037; H04W4/00; H04W4/06; H04W4/12; H04W4/14; H04W52/00; H04W52/02; H04W52/0209; H04W52/0212; H04W52/0216; H04W68/00; H04W72/00; H04W72/30; H04W88/00; H04W88/02; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
103 words
A method of communicating information to a remote station comprising the steps of: grouping the information into a plurality of successive time slots on a radio carrier signal; grouping the time slots into a plurality of successive superframes; and grouping the successive superframes into a plurality of successive hyperframes, wherein at least two successive superframes are grouped into each hyperframe; wherein each superframe includes at least one time slot comprising a logical channel for broadcast control information and at least one time slot comprising a logical paging channel, wherein the logical channel for broadcast control information also includes a logical special message channel.
Claim 2
Independent Claim
103 words
A method of communicating information to a remote station comprising the steps of: grouping the information into a plurality of successive time slots on a radio carrier signal; grouping the time slots into a plurality of successive superframes; and grouping the successive superframes into a plurality of successive hyperframes, wherein at least two successive superframes are grouped into each hyperframe; wherein each superframe includes at least one time slot comprising a logical channel for broadcast control information and at least one time slot comprising a logical paging channel, wherein the logical channel for broadcast control information also includes a logical special message channel.
Claim 3
Dependent Claim
35 words
The method of claim 1 , wherein at least one time slot of the special message channel are grouped in successive short message service (SMS) frames, and the SMS frames are synchronized with respective hyperframes.
Claim 4
Dependent Claim
21 words
The method of claim 2 , wherein each SMS frame corresponds to a respective one of a plurality of SMS sub-channels.
Claim 5
Dependent Claim
21 words
The method of claim 3 , wherein a special message spans at least two SMS frames of a respective SMS sub-channel.
Claim 6
Dependent Claim
54 words
The method of claim 3 , wherein the special messages included in the time slots of a first one of the SMS sub-channels are encrypted according to a first encryption method and the special messages included in the time slots of at least one other SMS sub-channel are encrypted according to another encryption method.
Claim 7
Dependent Claim
18 words
The method of claim 3 , wherein each special message is encrypted according to a respective encryption method.
Claim 8
Independent Claim
68 words
A method of communicating information to a remote station comprising the steps of: grouping the information into a plurality of time slots; grouping the time slots into a plurality of superframes; and sending, in each slot in each superframe, superframe phase information for identifying a position of the slot in the superframe, wherein the superframe phase information is twelve bits in length encoded from eight bit phase information.
Claim 9
Independent Claim
68 words
A method of communicating information to a remote station comprising the steps of: grouping the information into a plurality of time slots; grouping the time slots into a plurality of superframes; and sending, in each slot in each superframe, superframe phase information for identifying a position of the slot in the superframe, wherein the superframe phase information is twelve bits in length encoded from eight bit phase information.
Claim 10
Dependent Claim
26 words
The method of claim 7 , wherein the superframe phase information is a count indicating a time of next occurrence of a slot including overhead information.
Claim 11
Dependent Claim
46 words
The method of claim 7 , wherein the count is encoded according to a predetermined error correcting code, polarities of a plurality of cyclic redundancy check bits produced by encoding the count are inverted, and the bits having inverted polarities are included in the respective slot.
Claim 12
Dependent Claim
21 words
The method of claim 7 , wherein the eight bits include five bits of superframe phase information and three other bits.
Claim 13
Independent Claim
91 words
A method of communicating information to a remote station comprising the steps of: grouping the information into a plurality of time slots; grouping the time slots into a plurality of superframes; and sending, in each slot in each superframe, a count for identifying a position of the slot in the superframe, wherein the count is encoded according to a predetermined error correcting code, polarities of a plurality of cyclic redundancy check bits produced by encoding the count are inverted, and the bits having inverted polarities are included in the respective slot.
Claim 14
Independent Claim
91 words
A method of communicating information to a remote station comprising the steps of: grouping the information into a plurality of time slots; grouping the time slots into a plurality of superframes; and sending, in each slot in each superframe, a count for identifying a position of the slot in the superframe, wherein the count is encoded according to a predetermined error correcting code, polarities of a plurality of cyclic redundancy check bits produced by encoding the count are inverted, and the bits having inverted polarities are included in the respective slot.
Claim 15
Independent Claim
109 words
A method of communicating overhead information to a remote station comprising the steps of: grouping the overhead information into a plurality of time slots on a radio carrier signal; grouping other information into another plurality of time slots; successively transmitting the time slots having overhead information and the time slots having other information; and indicating in each time slot the respective time slot's temporal position with respect to a start of the next transmission of time slots having overhead information, wherein a time interval between successive transmissions of the time slots having overhead information is at least an order of magnitude greater than a duration of each time slot.
Claim 16
Independent Claim
109 words
A method of communicating overhead information to a remote station comprising the steps of: grouping the overhead information into a plurality of time slots on a radio carrier signal; grouping other information into another plurality of time slots; successively transmitting the time slots having overhead information and the time slots having other information; and indicating in each time slot the respective time slot's temporal position with respect to a start of the next transmission of time slots having overhead information, wherein a time interval between successive transmissions of the time slots having overhead information is at least an order of magnitude greater than a duration of each time slot.
Claim 17
Independent Claim
120 words
A method of communicating overhead information to a remote station comprising the steps of: grouping the overhead information into a plurality of time slots on a radio carrier signal; grouping other information into another plurality of time slots; successively transmitting the time slots having overhead information and the time slots having other information; and indicating in each time slot the respective time slot's temporal position with respect to a start of the next transmission of time slots having overhead information, wherein the time slots including the overhead information comprise a logical channel for broadcast control information and the time slots including the other information comprises special messages that are included in other time slots comprising a logical special message channel.
Claim 18
Independent Claim
120 words
A method of communicating overhead information to a remote station comprising the steps of: grouping the overhead information into a plurality of time slots on a radio carrier signal; grouping other information into another plurality of time slots; successively transmitting the time slots having overhead information and the time slots having other information; and indicating in each time slot the respective time slot's temporal position with respect to a start of the next transmission of time slots having overhead information, wherein the time slots including the overhead information comprise a logical channel for broadcast control information and the time slots including the other information comprises special messages that are included in other time slots comprising a logical special message channel.
Claim 19
Dependent Claim
21 words
The method of claim 13 , wherein the time slots of the special message channel are grouped in successive SMS frames.
Claim 20
Dependent Claim
21 words
The method of claim 14 , wherein each SMS frame corresponds to a respective one of a plurality of SMS sub-channels.
Claim 21
Dependent Claim
21 words
The method of claim 15 , wherein a special message spans at least two SMS frames of a respective SMS sub-channel.
Claim 22
Dependent Claim
54 words
The method of claim 15 , wherein the special messages included in the time slots of a first one of the SMS sub-channels are encrypted according to a first encryption method and the special messages included in the time slots of at least one other SMS sub-channel are encrypted according to another encryption method.
Claim 23
Independent Claim
18 words
The method of claims 15 , wherein each special message is encrypted according to a respective encryption method.
Claim 24
Dependent Claim
84 words
A remote station for receiving information sent in a plurality of successive time slots on a radio carrier signal comprising: a receiver for receiving the radio carrier signal; means for processing the information in the time slots on the received radio carrier signal, wherein the processing means reads, in each time slot in a superframe, a count indicating a next time of occurrence of a slot including overhead information, wherein the count is eight bits which has been encoded to a twelve bit field.
Claim 25
Dependent Claim
84 words
A remote station for receiving information sent in a plurality of successive time slots on a radio carrier signal comprising: a receiver for receiving the radio carrier signal; means for processing the information in the time slots on the received radio carrier signal, wherein the processing means reads, in each time slot in a superframe, a count indicating a next time of occurrence of a slot including overhead information, wherein the count is eight bits which has been encoded to a twelve bit field.
Claim 26
Dependent Claim
47 words
The remote station of claim 19 , wherein the count is encoded according to a predetermined error correcting code, polarities of a plurality of cyclic redundancy check bits produced by encoding the counts are inverted and the bits having inverted polarities are included in the respective slot.
Claim 27
Dependent Claim
111 words
A base station comprising: a processor for; (a) grouping the information into a plurality of successive time slots on a radio carrier signal; (b) grouping the time slots into a plurality of successive superframes; and (c) grouping the successive superframes into a plurality of successive hyperframes, wherein at least two successive superframes are grouped into each hyperframe; wherein each superframe includes at least one time slot comprising a logical channel for broadcast control information and at least one time slot comprising a logical paging channel, wherein the logical channel for broadcast control information also includes a logical special message channel; and a transceiver for transmitting said hyperframes as a control channel.
Claim 28
Dependent Claim
111 words
A base station comprising: a processor for; (a) grouping the information into a plurality of successive time slots on a radio carrier signal; (b) grouping the time slots into a plurality of successive superframes; and (c) grouping the successive superframes into a plurality of successive hyperframes, wherein at least two successive superframes are grouped into each hyperframe; wherein each superframe includes at least one time slot comprising a logical channel for broadcast control information and at least one time slot comprising a logical paging channel, wherein the logical channel for broadcast control information also includes a logical special message channel; and a transceiver for transmitting said hyperframes as a control channel.
Claim 29
Dependent Claim
37 words
The base station of claim 21 , wherein at least one time slot of the logical special message channel are grouped in successive short message service (SMS) frames, and the SMS frames are synchronized with respective hyperframes.
Claim 30
Dependent Claim
22 words
The base station of claim 22 , wherein each SMS frame corresponds to a respective one of a plurality of SMS sub-channels.
Claim 31
Dependent Claim
22 words
The base station of claim 23 , wherein a special message spans at least two SMS frames of a respective SMS sub-channel.
Claim 32
Dependent Claim
55 words
The base station of claim 23 , wherein the special messages included in the time slots of a first one of the SMS sub-channels are encrypted according to a first encryption method and the special messages included in the time slots of at least one other SMS sub-channel are encrypted according to another encryption method.
Claim 33
Dependent Claim
19 words
The base station of claim 23 , wherein each special message is encrypted according to a respective encryption method.
Claim 34
Dependent Claim
90 words
A base station comprising: a processor for: (a) grouping information into a plurality of time slots; and (b) grouping the time slots into a plurality of superframes; and a transceiver for sending, in each slot in each superframe, a count for identifying a position of the slot in the superframe, wherein the count is encoded according to a predetermined error correcting code, polarities of a plurality of cyclic redundancy check bits produced by encoding the count are inverted, and the bits having inverted polarities are included in the respective slot.
Claim 35
Dependent Claim
90 words
A base station comprising: a processor for: (a) grouping information into a plurality of time slots; and (b) grouping the time slots into a plurality of superframes; and a transceiver for sending, in each slot in each superframe, a count for identifying a position of the slot in the superframe, wherein the count is encoded according to a predetermined error correcting code, polarities of a plurality of cyclic redundancy check bits produced by encoding the count are inverted, and the bits having inverted polarities are included in the respective slot.
Claim 36
Dependent Claim
109 words
A base station comprising: a processor for: (a) grouping overhead information into a plurality of time slots on a radio carrier signal; and (b) grouping other information into another plurality of time slots; and a transceiver for successively transmitting the time slots having overhead information and the time slots having other information, wherein in each time slot the respective time slot's temporal position is indicated with respect to a start of the next transmission of time slots having overhead information, wherein a time interval between successive transmissions of the time slots having overhead information is at least an order of magnitude greater than a duration of each time slot.
Claim 37
Dependent Claim
109 words
A base station comprising: a processor for: (a) grouping overhead information into a plurality of time slots on a radio carrier signal; and (b) grouping other information into another plurality of time slots; and a transceiver for successively transmitting the time slots having overhead information and the time slots having other information, wherein in each time slot the respective time slot's temporal position is indicated with respect to a start of the next transmission of time slots having overhead information, wherein a time interval between successive transmissions of the time slots having overhead information is at least an order of magnitude greater than a duration of each time slot.
Claim 38
Dependent Claim
120 words
A base station comprising: a processor for: (a) grouping overhead information into a plurality of time slots on a radio carrier signal; and (b) grouping other information into another plurality of time slots; and a transceiver for successively transmitting the time slots having overhead information and the time slots having other information, wherein in each time slot the respective time slot's temporal position is indicated with respect to a start of the next transmission of time slots having overhead information, wherein the time slots including the overhead information comprise a logical channel for broadcast control information and the time slots including the other information comprises special messages that are included in other time slots comprising a logical special message channel.
Claim 39
Dependent Claim
120 words
A base station comprising: a processor for: (a) grouping overhead information into a plurality of time slots on a radio carrier signal; and (b) grouping other information into another plurality of time slots; and a transceiver for successively transmitting the time slots having overhead information and the time slots having other information, wherein in each time slot the respective time slot's temporal position is indicated with respect to a start of the next transmission of time slots having overhead information, wherein the time slots including the overhead information comprise a logical channel for broadcast control information and the time slots including the other information comprises special messages that are included in other time slots comprising a logical special message channel.
Claim 40
Dependent Claim
20 words
The base station 23 , wherein the time slots of the special message channel are grouped in successive SMS frames.
Claim 41
Dependent Claim
20 words
The base station 23 , wherein the time slots of the special message channel are grouped in successive SMS frames.
Claim 42
Dependent Claim
22 words
The base station of claim 30 , wherein each SMS frame corresponds to a respective one of a plurality of SMS sub-channels.
Claim 43
Dependent Claim
22 words
The base station of claim 31 , wherein a special message spans at least two SMS frames of a respective SMS sub-channel.
Claim 44
Dependent Claim
55 words
The base station of claim 31 , wherein the special messages included in the time slots of a first one of the SMS sub-channels are encrypted according to a first encryption method and the special messages included in the time slots of at least one other SMS sub-channel are encrypted according to another encryption method.
Claim 45
Dependent Claim
19 words
The base station of claim 31 , wherein each special message is encrypted according to a respective encryption method.
References Cited (Backward Citations)
US4815073A
Cited
US4527284A
Cited
US4509170A
Cited
US4633519A
Cited
EP0321454A2
Cited
US4649538A
Cited
GB2172775A
Cited
EP0240073A2
Cited
EP0260763A2
Cited
US4876738A
Cited
US4775999A
Cited
US4797654A
Cited
EP0291068A2
Cited
US4833702A
Cited
US5168574A
Cited
US5060227A
Cited
US4860281A
Cited
EP0336079A2
Cited
US5101500A
Cited
EP0344989A2
Cited
EP0370826A2
Cited
US5127100A
Cited
US5162790A
Cited
EP0439628A1
Cited
US5212822A
Cited
US5081704A
Cited
US5228030A
Cited
US5020091A
Cited
US5005171A
Cited
GB2243976A
Cited
EP0445887A2
Cited
EP0462572A2
Cited
US5111454A
Cited
US5230082A
Cited
EP0475865A2
Cited
US5153903A
Cited
WO1992010042A1
Cited
US5193091A
Cited
WO1992014308A1
Cited
US5383221A
Cited
EP0505106A2
Cited
US5233643A
Cited
EP0541026A2
Cited
US5307400A
Cited
US5325088A
Cited
EP0617566A1
Cited
US5353332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-04-02 | 2004-10-02 | 2005-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-04-02 | 2008-10-02 | 2009-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-04-02 | 2012-10-02 | 2013-04-03 | $7700.00 | Window Closed / Lapsed |