Gprs Error
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Formulae Manufacture Satellites Telecoms & networks Jobs Cellular / Mobile Telecommunications GPRS Coding Schemes & Data Rates - in order to provide resilience against interference and poor signal levels error detection is applied. Different GPRS coding schemes are applied accordingly GPRS Tutorial Includes sms error code 69 GPRS introductionNetwork architectureMultislot classesRadio air interfaceCodingChannelsProtocol stackGPRS operation In order to accommodate the packet
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data within GPRS it has been necessary to develop the coding schemes. Additionally the layers based on the OSI system has become
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more important than it was for some of the previous systems and descriptions what are contained within these layers are found below. GPRS coding GPRS offers a number of coding schemes with different levels of https://forums.adafruit.com/viewtopic.php?f=19&t=59256 error detection and correction. These are used dependent upon the radio frequency signal conditions and the requirements for the data being sent. These are given labels CS-1 to CS-4: CS-1: - This GPRS coding scheme applies the highest level of error detection and correction. It is used in scenarios when interference levels are high or signal levels are low. By applying high levels of detection and correction, this prevents the data having http://www.radio-electronics.com/info/cellulartelecomms/gprs/gprs-error-coding.php to be re-sent too often. Although it is acceptable for many types of data to be delayed, for others there is a more critical time element. This level of detection and coding results in a half code rate, i.e. for every 12 bits that enter the coder, 24 bits result. CS-2: - This error detection and GPRS coding scheme is for better channels. It effectively uses a 2/3 encoder and results in an improved data rate over CS-1. CS-3: - This GPRS coding scheme effectively uses a 3/4 coder. CS-4: - This scheme is used when the signal is high and interference levels are low. No correction is applied to the signal allowing for a maximum throughput. GPRS Coding Algorithms & Data Rates Coding scheme Max Data rate for One Slot Max Data rate for Two Slots Max Data rate for Eight Slots CS-1 8.0 16.0 64 CS-2 12.0 24.0 96 CS-3 14.4 28.8 115.2 CS-4 20.0 40.0 160 ** Note: Data rates for the different GPRS coding schemes given in kbps
In addition to the error detection and coding schemes, GPRS also employs interleaving techniques to ensure the effects of interference and spurious noise are reduced to a minimum. It allows the error correction techniques to be more effective as interleaving h2014 (dutch version)September 2014September 2014 (dutch version)July 2014juli 2014 (dutch version)April 20142013November 2013June 2013March 20132012November 2012June 2012March 20122011November 2011July 2011March 20112010November http://www.micromedia-int.com/en/gsm-2/73-gsm/669-cme-error-gsm-equipment-related-errors 2010September 2010May 2010January 20102009October 2009June 2009March 2009Products PDF'sReferences PDF'sWhite Paper On-Call-ManagementSecuring Water TreatmentPress releaseSuccess StoriesOur customers say ...PressLegal informationsPRODUCTSALERTPresentationStrengthsImmediate benefitsKeys of choiceHow many tagsWhich mediaWhich network typeWhich modemServer or Client modeALERT Version 3.6 Rev1Alert 3.6 Rev cms error 2ALERTMOBILEPresentationJERICHOPresentationNET'SENTINELPresentationPROG'TIMEPrésentationHARDWAREModemsISDN AdaptersPSTN modemsGSM modems OtherSOLUTIONSAutomobile industryProduction line optimizationWater TreatmentCoast ProtectionFloods Prevention Supervision of Water Treatment PlantsSimultaneous Management of different plantsEnvironment Mont Saint MichelHow to manage natural hazardsSnowing up artificiallyMarine Species under protectionFermentation process monitoringBuilding ManagementAt your serviceThe +cme error: 3 archives of French heritageBuilding Management SystemMovie Theater - comfort for the audienceTransportThe Zero-Risk-LogicBayonne HarborMont Blanc tunnelChemistrySupply SupervisionRemote monitoring of water treatment plantsHigher mobility for operatorsHealthHow to manage nurse callsMicroelectronicsCombination with supervision SVS-2000Total-Quality-Semi-conductorsFood IndustryHow to avoid needless movingCentralisation et traceability on the core processA refined solutionControlling a production linePharmaceuticsResponse to pharmaceutical standardsMetal Processing IndustryLafarge AluminatesMiscellaneousStrength and user-friendliness of the web interfaceSERVICESMaintenance contractsTrainingAssistancesConsulting and ExpertiseOnline demonstrationsSUPPORTFAQContactTeamviewerCONTACTSalesSupportWhere to buyMicromediaDistributorsIntegratorsVARBecome a partnerNewsletter SubscriptionDOWNLOADSoftwareRequest demo-versionTechnical documentation productsTechnical documentation references You are here: Home // GSM // CME ERROR (GSM Equipment Related errors) CME ERROR (GSM Equipment Related errors) Print Email CME ERROR: 0 Phone failure CME ERROR: 1 No connection to