CA2078232C - Radiotelephone message processing for low power operation - Google Patents
Radiotelephone message processing for low power operationInfo
- Publication number
- CA2078232C CA2078232C CA002078232A CA2078232A CA2078232C CA 2078232 C CA2078232 C CA 2078232C CA 002078232 A CA002078232 A CA 002078232A CA 2078232 A CA2078232 A CA 2078232A CA 2078232 C CA2078232 C CA 2078232C
- Authority
- CA
- Canada
- Prior art keywords
- word
- data
- received
- radiotelephone
- message
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012545 processing Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 claims abstract description 42
- 230000004044 response Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 21
- 235000002020 sage Nutrition 0.000 description 5
- 241000282320 Panthera leo Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 101100440696 Caenorhabditis elegans cor-1 gene Proteins 0.000 description 1
- 101100401100 Caenorhabditis elegans mes-1 gene Proteins 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- ZAIPMKNFIOOWCQ-UEKVPHQBSA-N cephalexin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@@H]3N(C2=O)C(=C(CS3)C)C(O)=O)=CC=CC=C1 ZAIPMKNFIOOWCQ-UEKVPHQBSA-N 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 229940004894 expecta Drugs 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
- H04B1/1615—Switching on; Switching off, e.g. remotely
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The process of the present invention first synchronizes to incoming messages from the base station. The first data word is received and stored in the radiotelephone. The error code in the data word is next checked to determine if errors ex-ist in the word. If there are errors, the word is corrected.
This process is repeated on another data word and the second received word is compared with the first. If the words are not equal, the receiver remains on until at least two words are equal or the entire length of the message is received. If the words are equal, the word is processed by the radiotelephone and the receiver is turned off for the remaining portion of the message until the next synchronization word is to be received.
This process is repeated on another data word and the second received word is compared with the first. If the words are not equal, the receiver remains on until at least two words are equal or the entire length of the message is received. If the words are equal, the word is processed by the radiotelephone and the receiver is turned off for the remaining portion of the message until the next synchronization word is to be received.
Description
2`~ i323~
RADIOTELEPHONE MF~ GE PROCESSING FOR LOW
POWER OPERATION
E ield of the Tnvpntion The present illvelllion relates generally to the field of communications and particularly to radiotelephone commu-nications.
1 0 R~kProlln~l Of tl~ Tnvan~ m Radioteler~nes, while in an idle or standby mode, must constantly monitor a ~~ ous ~llea"l of data mes-sages that are sent by the base station. One of these data mes-1 5 sage streams is on the fol ~. a~d control rh~nnel. The format ofthese mes~a~es is shown in FIG. 1 and is e~ qine~l in more detail in Elecllollic Industries ~soci~t;nn (EIA) 553 cellular system specific~t;on at section 3.7.
The radiotelerhons uses the dotting word (101), the first 2 0 word of the me~sage~ to synchrollize the r~liot~lephone hard-ware to the clock of the data message. The syncLo--i7~t;nn word (102) indicates the present lor~t;on in the data bll~ to the radiotelephone and that the data sequence is about to start.
Repe~t, words A and B (103 and 104) are each forty bit words, 2 5 the contnnt and format of which are llpfinetl in EIA 553, and each is repe~ts-l five times in the me~sage as illustrated. The radiotelephone leceives both of these words but only processe~
one of them. Which one the radiotelephone processes is de-ter_ined by the least ~ignific~nt digit of the radiotelephone's 3 0 telephone nllmber. If the telephone number is even, word A is processetl; otherwise word B is proces~e~i In order to receive and process these words, the radiotelephone's receiver must be on and dld~ g power the entire time, thereby reducing the time a portable, battery-powered radiotelephone can be used ~L
-2- 207~232 for co~--..icAtion. There i9 a resulting need for a way to re-duce the time that the radiotelephone's lece;ver rçm~inR on during the idle mode, thus reducing power consumption, while still rece;villg the necesRAry informAtion from the base st~tion ~nmm~rV of the Inv~ntinn The process of the ylasellt invention initially ~yllchl~
1 0 nizes the radiotelephone to inCQming meRsages from the base st~t;QnR fol~.~l control ch~nne?. The first repeat data word, either A or B, i8 ~eceived and stored in the radiotelephone.
The error code in the data word is next ~he~e~l to determine if errors exist in the word. If there are ers, the word is cor-1 5 rected. This l,locass is repeAte-l on another data word and the seContl lece;ved word is co.-.pA.ad with the first. If the words are not equal, the words have been COl 1 ~lyted by noise or other intel~lallce and, therefo~a, the lecdivtr rçm~in~ on for the re-mAin~ler of the message. If the words are equal, the word is proce~se-l by the 1 ~iotelephone and the laceiver is turned off for the remAinin~ portion of the meS~ge until the next syn-chroni7A1;0~ word is to be received.
Rrief l~escr~tion of t~e nrAwin~s FIG. 1 illustrates the message for_at of the data sll~ ~c~;ved from the base station.
FIGS. 2A and 2B illustrate flowcharts of the lJ10Ce33 of the present invent;on 3 0 FIG. 3 illustrates a block diagram of a portion of a ra-diotelephone in accordance with the present invçntinrl-net~ile-l T)escr~tion of thP I~ aferl e~ ~:mhoflim~nt The process of the present invention re~llces the time the radiotelephone's ~ace;ver is on, and thelafola drawing power, while in the idle state. This is ^~cornrlifihpA by shut-ting off the laceiver, for the rPm~inA?r of the mess~e~ after the lcceil,l of an error free repeat word has been verified.
The process of the present illvt:lllion i~ illu~trated in FIGS. 2A and 2B. Tni~ lly, an off-timer is che~ ks~ for a zero 1 0 cQn-lit.~Qn (201). This timer flPterminss the length of time the ~aca;ver is to be turned off. If the off-timer is not zero, the re-ceiver should remain off and the routine is exited. Once the off-timer reachPs zero, the l~;~;ver is turned on (202) and the data rece~:n- rOulillc (200) is ~lfi,l~ed to ~aca;ve the data 1 5 mes~ges from the base st~t. Qn The radiot~lerhnne, a block diagram of the relevant portions of which is illu~trated in FIG. 3, then receives the data messages sent by the base sta-tion. Once the mP~sage re~rh~E the Aott;n~ word (101), the ra-diotelephone starts the synchro-i7;r~ process. The dotting 2 0 word (101) enables the radiotelephone ha~dwa e to synchro-nize with the data mss~e clock. The radiotelephone next re-ceives the synchrQni7~t;on word (102) that inAi~teE to the ra-diotelephone the start of the repeat word (103 and 104) se-quence.
The first ~ace;ved and processeA repeat word, either A
(103) or B (104), de~e~ on the radiotelçphnne's tçlephone mlmher, ig gtored in the radiotelerhnne. Since the radiotele-phone only processes either an A or B repeat word, sub~equent ~efele.~ce to repeat words (103 or 104), unless indicated other-3 0 wise, is to the ~pe~fic repeat word processe~l by the r~Aiotele-phone.
A repeat word counter is next incrçmPnte-l (204) to keep track of the number of repeat words received. The error code in the word, ç~pl~ine-l in more detail in EIA 553, is chP~cke~ to 4 2~78232 determine if errors are present in the word (205). If there are errors, c~llce~i by noise or other in~lreldllce while in the trAnRmi~sion process, an ~A~le~ t i8 made to remove the er-rors. This error col,eclion ~OCd88 i8 described in detail in the EIA 553 sperifit~tion. If the errors are le~red (205), the cor-rected repeat word is stored (206) for later cc "~l'A ~ ;~on. If the errors could not be col,e~,led, the ~,oce~ che~R the word counter to determine if all five repeat words have been re-ceived (211). If all of the repeat words have not be ,ece;~ed, the 1 0 process l.:~eal~ from the beginning in order to retrieve at least five. When the word counter re~che6 five, it is reset to zero (212) to get ready for the start of a new mQs~e. A _ajority vote of the fecdived repeat words is next ~elfolmed (213).
The majol,ly vote (213) co~ es the five iec~:;ved repeat 1 5 words. If there are at least three that are the same, this word iB A981lme~ to be the word to be ~,.ocesse-l by the rP~iiotele-phone. If the error code in~iic~tes a le~luilc~ent that the re-peat word be error collacled~ an error CO"d. lion Attemrt is made (214). If the co"e. lion is not snccessr .l, the radiotele-2 0 phone ignores the word and returns to the 1~; ; . ~g of the l)loce~ to wait for ~not~er data message. If the error correc-tion is sllccessful, the word is processe-l (216) by the radiotele-phone. The process l,elru,med depends on the inform~t;on contained in the word, as illustrated in EIA 553.
2 5 After the error corrected repeat word is stored (206), it is c~ . ad with any other repeat words that have been stored (207). If no other repeat words have been stored, the process goes back to the beginni~ to wait for another word. If the predetermined number of stored words m~t~h, this nllmher 3 0 being two in the preferred embo~lim~nt~ this word is assumed to be the co, l act repeat word and is processe~ by the radiotele-phone (208). As before, the process pe,ro,med depends on the inform~t;on cont~ine-l in the word.
~5~ 2~7~2~2 Once the radiotelephone i8 fini~hstl proce~ing (208), the off-tiIner is set (209) for the length of time rçm~inin~ until the next synchroni7atinn word i8 expecta~l Since the radiotele-phone is synchronized with the data me~sage~ the radiotele-phone knows how long it will be until the next syncL~olliza-tion word is to be l~ceived. The lece;ver can then be turned off (210), reducing the power consu ll~Lion of the radiotelephone, until the next synchr~ 7~tion word is due. The data recep-tion routine (200) then returns to the power control foul~ e 1 0 and the timer is che~etl for a zero con~lition (201). Once the timer re~r.hes zero, the lece;ver iB turned on (202), and the data lece~Lion ~;ocess (200) of the present in~renLion begins again.
FIG. 3 shows a block diagram of a typical radiotelephone. The mic~rocessor (301), which runs the process of the present inVçntiQn~ fecaives the repeat words from the leceive~ (302) and, in response to the above described process of the present illV~"I ;on, controls the power to the r~C~iv~r (302).
2 0 In snmmD~ry~ a process for operating a radiotelephone at reduced power has been shown. This process en~hles the radiotaleph~ne to turn off the lece;ver for periods of time, thereby conserving the battery power.
RADIOTELEPHONE MF~ GE PROCESSING FOR LOW
POWER OPERATION
E ield of the Tnvpntion The present illvelllion relates generally to the field of communications and particularly to radiotelephone commu-nications.
1 0 R~kProlln~l Of tl~ Tnvan~ m Radioteler~nes, while in an idle or standby mode, must constantly monitor a ~~ ous ~llea"l of data mes-sages that are sent by the base station. One of these data mes-1 5 sage streams is on the fol ~. a~d control rh~nnel. The format ofthese mes~a~es is shown in FIG. 1 and is e~ qine~l in more detail in Elecllollic Industries ~soci~t;nn (EIA) 553 cellular system specific~t;on at section 3.7.
The radiotelerhons uses the dotting word (101), the first 2 0 word of the me~sage~ to synchrollize the r~liot~lephone hard-ware to the clock of the data message. The syncLo--i7~t;nn word (102) indicates the present lor~t;on in the data bll~ to the radiotelephone and that the data sequence is about to start.
Repe~t, words A and B (103 and 104) are each forty bit words, 2 5 the contnnt and format of which are llpfinetl in EIA 553, and each is repe~ts-l five times in the me~sage as illustrated. The radiotelephone leceives both of these words but only processe~
one of them. Which one the radiotelephone processes is de-ter_ined by the least ~ignific~nt digit of the radiotelephone's 3 0 telephone nllmber. If the telephone number is even, word A is processetl; otherwise word B is proces~e~i In order to receive and process these words, the radiotelephone's receiver must be on and dld~ g power the entire time, thereby reducing the time a portable, battery-powered radiotelephone can be used ~L
-2- 207~232 for co~--..icAtion. There i9 a resulting need for a way to re-duce the time that the radiotelephone's lece;ver rçm~inR on during the idle mode, thus reducing power consumption, while still rece;villg the necesRAry informAtion from the base st~tion ~nmm~rV of the Inv~ntinn The process of the ylasellt invention initially ~yllchl~
1 0 nizes the radiotelephone to inCQming meRsages from the base st~t;QnR fol~.~l control ch~nne?. The first repeat data word, either A or B, i8 ~eceived and stored in the radiotelephone.
The error code in the data word is next ~he~e~l to determine if errors exist in the word. If there are ers, the word is cor-1 5 rected. This l,locass is repeAte-l on another data word and the seContl lece;ved word is co.-.pA.ad with the first. If the words are not equal, the words have been COl 1 ~lyted by noise or other intel~lallce and, therefo~a, the lecdivtr rçm~in~ on for the re-mAin~ler of the message. If the words are equal, the word is proce~se-l by the 1 ~iotelephone and the laceiver is turned off for the remAinin~ portion of the meS~ge until the next syn-chroni7A1;0~ word is to be received.
Rrief l~escr~tion of t~e nrAwin~s FIG. 1 illustrates the message for_at of the data sll~ ~c~;ved from the base station.
FIGS. 2A and 2B illustrate flowcharts of the lJ10Ce33 of the present invent;on 3 0 FIG. 3 illustrates a block diagram of a portion of a ra-diotelephone in accordance with the present invçntinrl-net~ile-l T)escr~tion of thP I~ aferl e~ ~:mhoflim~nt The process of the present invention re~llces the time the radiotelephone's ~ace;ver is on, and thelafola drawing power, while in the idle state. This is ^~cornrlifihpA by shut-ting off the laceiver, for the rPm~inA?r of the mess~e~ after the lcceil,l of an error free repeat word has been verified.
The process of the present illvt:lllion i~ illu~trated in FIGS. 2A and 2B. Tni~ lly, an off-timer is che~ ks~ for a zero 1 0 cQn-lit.~Qn (201). This timer flPterminss the length of time the ~aca;ver is to be turned off. If the off-timer is not zero, the re-ceiver should remain off and the routine is exited. Once the off-timer reachPs zero, the l~;~;ver is turned on (202) and the data rece~:n- rOulillc (200) is ~lfi,l~ed to ~aca;ve the data 1 5 mes~ges from the base st~t. Qn The radiot~lerhnne, a block diagram of the relevant portions of which is illu~trated in FIG. 3, then receives the data messages sent by the base sta-tion. Once the mP~sage re~rh~E the Aott;n~ word (101), the ra-diotelephone starts the synchro-i7;r~ process. The dotting 2 0 word (101) enables the radiotelephone ha~dwa e to synchro-nize with the data mss~e clock. The radiotelephone next re-ceives the synchrQni7~t;on word (102) that inAi~teE to the ra-diotelephone the start of the repeat word (103 and 104) se-quence.
The first ~ace;ved and processeA repeat word, either A
(103) or B (104), de~e~ on the radiotelçphnne's tçlephone mlmher, ig gtored in the radiotelerhnne. Since the radiotele-phone only processes either an A or B repeat word, sub~equent ~efele.~ce to repeat words (103 or 104), unless indicated other-3 0 wise, is to the ~pe~fic repeat word processe~l by the r~Aiotele-phone.
A repeat word counter is next incrçmPnte-l (204) to keep track of the number of repeat words received. The error code in the word, ç~pl~ine-l in more detail in EIA 553, is chP~cke~ to 4 2~78232 determine if errors are present in the word (205). If there are errors, c~llce~i by noise or other in~lreldllce while in the trAnRmi~sion process, an ~A~le~ t i8 made to remove the er-rors. This error col,eclion ~OCd88 i8 described in detail in the EIA 553 sperifit~tion. If the errors are le~red (205), the cor-rected repeat word is stored (206) for later cc "~l'A ~ ;~on. If the errors could not be col,e~,led, the ~,oce~ che~R the word counter to determine if all five repeat words have been re-ceived (211). If all of the repeat words have not be ,ece;~ed, the 1 0 process l.:~eal~ from the beginning in order to retrieve at least five. When the word counter re~che6 five, it is reset to zero (212) to get ready for the start of a new mQs~e. A _ajority vote of the fecdived repeat words is next ~elfolmed (213).
The majol,ly vote (213) co~ es the five iec~:;ved repeat 1 5 words. If there are at least three that are the same, this word iB A981lme~ to be the word to be ~,.ocesse-l by the rP~iiotele-phone. If the error code in~iic~tes a le~luilc~ent that the re-peat word be error collacled~ an error CO"d. lion Attemrt is made (214). If the co"e. lion is not snccessr .l, the radiotele-2 0 phone ignores the word and returns to the 1~; ; . ~g of the l)loce~ to wait for ~not~er data message. If the error correc-tion is sllccessful, the word is processe-l (216) by the radiotele-phone. The process l,elru,med depends on the inform~t;on contained in the word, as illustrated in EIA 553.
2 5 After the error corrected repeat word is stored (206), it is c~ . ad with any other repeat words that have been stored (207). If no other repeat words have been stored, the process goes back to the beginni~ to wait for another word. If the predetermined number of stored words m~t~h, this nllmher 3 0 being two in the preferred embo~lim~nt~ this word is assumed to be the co, l act repeat word and is processe~ by the radiotele-phone (208). As before, the process pe,ro,med depends on the inform~t;on cont~ine-l in the word.
~5~ 2~7~2~2 Once the radiotelephone i8 fini~hstl proce~ing (208), the off-tiIner is set (209) for the length of time rçm~inin~ until the next synchroni7atinn word i8 expecta~l Since the radiotele-phone is synchronized with the data me~sage~ the radiotele-phone knows how long it will be until the next syncL~olliza-tion word is to be l~ceived. The lece;ver can then be turned off (210), reducing the power consu ll~Lion of the radiotelephone, until the next synchr~ 7~tion word is due. The data recep-tion routine (200) then returns to the power control foul~ e 1 0 and the timer is che~etl for a zero con~lition (201). Once the timer re~r.hes zero, the lece;ver iB turned on (202), and the data lece~Lion ~;ocess (200) of the present in~renLion begins again.
FIG. 3 shows a block diagram of a typical radiotelephone. The mic~rocessor (301), which runs the process of the present inVçntiQn~ fecaives the repeat words from the leceive~ (302) and, in response to the above described process of the present illV~"I ;on, controls the power to the r~C~iv~r (302).
2 0 In snmmD~ry~ a process for operating a radiotelephone at reduced power has been shown. This process en~hles the radiotaleph~ne to turn off the lece;ver for periods of time, thereby conserving the battery power.
Claims (9)
1. A method for operating a radiotelephone at reduced power, the radiotelephone having a receiver, memory, and process-ing one of a plurality of messages received from a base station, each message being comprised of a synchronization word, at least one data word, and at least one repeated data word, each data word including an error code, the method characterized by the steps of:
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the synchronization word;
b) receiving the data word;
c) storing the data word;
d) modifying the data word in response to the error code;
e) if a repeated data word has not been received, repeat-ing from step b, thereby forming a plurality of received data words;
f) comparing at least two data words of the plurality of data words to each other;
g) if the at least two received data words are not the same, receiving any remaining data words in the first mes-sage; and the method further characterized by the step;
h) if the at least two received data words are the same, shutting off the receiver for a predetermined time.
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the synchronization word;
b) receiving the data word;
c) storing the data word;
d) modifying the data word in response to the error code;
e) if a repeated data word has not been received, repeat-ing from step b, thereby forming a plurality of received data words;
f) comparing at least two data words of the plurality of data words to each other;
g) if the at least two received data words are not the same, receiving any remaining data words in the first mes-sage; and the method further characterized by the step;
h) if the at least two received data words are the same, shutting off the receiver for a predetermined time.
2. The method of claim 1 characterized in that the predetermined time is for the remainder of the repeated data words in the first message.
3. A method for operating a radiotelephone at reduced power, the radiotelephone having a receiver, memory, and process-ing a plurality of messages received from a base station, each message being comprised of a synchronization word, and a first and a second data word, each data word including an er-ror code and being repeated a plurality of times in the mes-sage, the radiotelephone processing only the first or the sec-ond data word, the method characterized by the steps of:
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the synchronization word;
b) receiving the second data word;
c) storing the second data word;
d) modifying the second data word in response to the er-ror code;
e) if a repeated second data word has not been received, repeating from step b, thereby forming a plurality of received second data words;
f) comparing the plurality of received second data words to each other;
g) if at least two received second data words are not the same, receiving any remaining second data words in the first message; and the method further characterized by the step h) if at least two received second data words are the same, shutting off the receiver for a predetermined time.
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the synchronization word;
b) receiving the second data word;
c) storing the second data word;
d) modifying the second data word in response to the er-ror code;
e) if a repeated second data word has not been received, repeating from step b, thereby forming a plurality of received second data words;
f) comparing the plurality of received second data words to each other;
g) if at least two received second data words are not the same, receiving any remaining second data words in the first message; and the method further characterized by the step h) if at least two received second data words are the same, shutting off the receiver for a predetermined time.
4. The method of claim 3 characterized in that the predetermined time is for the remainder of the repeated second data words in the first message.
5. A method for operating a radiotelephone at reduced power, the radiotelephone having a receiver and processing a plural-ity of messages received from a base station, each message be-ing comprised of a synchronization word, and a first and a second data word, each data word including an error code and being repeated a plurality of times in the message, the ra-diotelephone processing only the first or the second data word, the method characterized by the steps of:
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the synchronization word;
b) receiving the first data word;
c) storing the first data word;
d) modifying the first data word in response to the error code;
e) if a repeated first data word has not been received, re-peating from step b, thereby forming a plurality of received first data words;
f) comparing the plurality of received first data words to each other;
g) if at least two received first data words are not the same, receiving any remaining first data words in the first message; and the method further characterized by the step;
h) if at least two received first data words are the same, shutting off the received for a predetermined time.
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the synchronization word;
b) receiving the first data word;
c) storing the first data word;
d) modifying the first data word in response to the error code;
e) if a repeated first data word has not been received, re-peating from step b, thereby forming a plurality of received first data words;
f) comparing the plurality of received first data words to each other;
g) if at least two received first data words are not the same, receiving any remaining first data words in the first message; and the method further characterized by the step;
h) if at least two received first data words are the same, shutting off the received for a predetermined time.
6. The method of claim 5 characterized in that the predetermined time is for the remainder of the repeated first data words in the first message.
7. A radiotelephone for communicating with a base station, the base station transmitting a plurality of messages, each message being comprised of at least one synchronization word, at least one data word, and at least one repeated data word, each data word including an error code, the radiotele-phone comprising:
receiving means for receiving the plurality of messages;
transmission means for transmitting signals;
memory means for storing the at least one data word;
and processing means for controlling the radiotelephone, the processing means performing a method of operating the radiotelephone at reduced power, the method characterized by the steps of:
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the at least one synchronization word;
b) receiving a first data word;
c) storing the first data word;
d) modifying the first data word in response to the error code;
e) if a repeated first data word has not been re-ceived, repeating from step b;
f) comparing at least two first data words to each other;
g) if the at least two received first data words are not the same, receiving any remaining first data words in the first message; and the method further characterized by;
h) if the at least two received first data words are the same, shutting off the received for a predetermined time.
receiving means for receiving the plurality of messages;
transmission means for transmitting signals;
memory means for storing the at least one data word;
and processing means for controlling the radiotelephone, the processing means performing a method of operating the radiotelephone at reduced power, the method characterized by the steps of:
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the at least one synchronization word;
b) receiving a first data word;
c) storing the first data word;
d) modifying the first data word in response to the error code;
e) if a repeated first data word has not been re-ceived, repeating from step b;
f) comparing at least two first data words to each other;
g) if the at least two received first data words are not the same, receiving any remaining first data words in the first message; and the method further characterized by;
h) if the at least two received first data words are the same, shutting off the received for a predetermined time.
8. A method for operating a radiotelephone at reduced power, the radiotelephone having a receiver and processing a plural-ity of messages received from a base station, each message be-ing comprised of at least one synchronization word, at least one data word, and at least one repeated data word, each data word including an error code, the method characterized by the steps of:
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the at least one syn-chronization word;
b) receiving at least two data words;
c) modifying each data word in response to the error code in each data word;
d) comparing the at least two data words to each other;
e) if the at least two data words are not the same, receiv-ing any remaining data words in the first message; and the method further characterized by the step of f) if the at least two data words are the same, turning off the receiver for a predetermined time.
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the at least one syn-chronization word;
b) receiving at least two data words;
c) modifying each data word in response to the error code in each data word;
d) comparing the at least two data words to each other;
e) if the at least two data words are not the same, receiv-ing any remaining data words in the first message; and the method further characterized by the step of f) if the at least two data words are the same, turning off the receiver for a predetermined time.
9. A method for operating a radiotelephone at reduced power, the radiotelephone having a receiver and processing a plural-ity of messages received from a base station, each message be-ing comprised of at least one synchronization word, at least one data word, and at least one repeated data word, each data word including an error code, the method characterized by the steps of:
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the at least one syn-chronization word;
b) receiving at least two data words;
c) modifying each data word in response to the error code in each data word;
d) comparing the at least two data words to each other, e) if the at least two data words are not the same, receiv-ing any remaining data words in the first message; and the method further characterized by the step of;
f) if the at least two data words are the same, turning off the receiver until the at least one synchronization word in a second message of the plurality of messages is received.
a) synchronizing the radiotelephone to a first message of the plurality of messages in response to the at least one syn-chronization word;
b) receiving at least two data words;
c) modifying each data word in response to the error code in each data word;
d) comparing the at least two data words to each other, e) if the at least two data words are not the same, receiv-ing any remaining data words in the first message; and the method further characterized by the step of;
f) if the at least two data words are the same, turning off the receiver until the at least one synchronization word in a second message of the plurality of messages is received.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US682,996 | 1991-04-10 | ||
| US07/682,996 US5175874A (en) | 1991-04-10 | 1991-04-10 | Radiotelephone message processing for low power operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2078232A1 CA2078232A1 (en) | 1992-10-11 |
| CA2078232C true CA2078232C (en) | 1996-04-23 |
Family
ID=24742121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002078232A Expired - Fee Related CA2078232C (en) | 1991-04-10 | 1992-03-13 | Radiotelephone message processing for low power operation |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5175874A (en) |
| KR (1) | KR960003839B1 (en) |
| AR (1) | AR246143A1 (en) |
| CA (1) | CA2078232C (en) |
| GB (1) | GB2262413B (en) |
| HK (1) | HK1000231A1 (en) |
| IT (1) | IT1253991B (en) |
| MX (1) | MX9201666A (en) |
| WO (1) | WO1992019049A1 (en) |
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-
1991
- 1991-04-10 US US07/682,996 patent/US5175874A/en not_active Expired - Lifetime
-
1992
- 1992-03-13 GB GB9225117A patent/GB2262413B/en not_active Expired - Fee Related
- 1992-03-13 CA CA002078232A patent/CA2078232C/en not_active Expired - Fee Related
- 1992-03-13 WO PCT/US1992/001983 patent/WO1992019049A1/en active Application Filing
- 1992-03-13 KR KR1019920703082A patent/KR960003839B1/en not_active IP Right Cessation
- 1992-04-08 IT ITRM920258A patent/IT1253991B/en active
- 1992-04-10 AR AR92322108A patent/AR246143A1/en active
- 1992-04-10 MX MX9201666A patent/MX9201666A/en not_active IP Right Cessation
-
1997
- 1997-09-08 HK HK97101743A patent/HK1000231A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2262413B (en) | 1995-03-01 |
| HK1000231A1 (en) | 1998-02-06 |
| CA2078232A1 (en) | 1992-10-11 |
| WO1992019049A1 (en) | 1992-10-29 |
| US5175874A (en) | 1992-12-29 |
| AR246143A1 (en) | 1994-03-30 |
| KR930701023A (en) | 1993-03-16 |
| ITRM920258A0 (en) | 1992-04-08 |
| MX9201666A (en) | 1992-10-01 |
| KR960003839B1 (en) | 1996-03-22 |
| ITRM920258A1 (en) | 1993-10-08 |
| IT1253991B (en) | 1995-09-05 |
| GB2262413A (en) | 1993-06-16 |
| GB9225117D0 (en) | 1993-02-17 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 20030313 |