A method for data communication between a base station and at least one transponder by a high-frequency electromagnetic carrier signal is disclosed, onto which information packets are modulated, whereby each information packet has a header section, a middle section, and an end section and whereby the middle section has a data field for the transmission of data and/or address information and a protection field placed thereafter for the correction of errors in the transmission of the data and/or address information, whereby after the data field the base station inserts at least one control field, by which the protection field following the inserted control field can be changed in such a way that the duration of an information packet is set variably. The invention relates further to a base station for carrying out this method, to a data communication system containing a base station and at least one transponder in communicative wireless contact with the base station.

Claims

23 · 3 independent · depth 3

23 granted claims

›1.independentA method comprising:na inserting a control field into an information packet comprising one or more data fields and a protection field, the protection …+3

›5.independentA method comprising:na inserting a control field into an information packet comprising one or more data fields and a protection field, the protection …+9

›6.↳ 5The method according to claim 5, the first value indicating that the first portion of the information packet preceding the control field has been corr…d2

›7.↳ 5The method according to claim 5, the second value indicating that the first portion of the information packet preceding the control field has not been…d2

›8.↳ 5The method according to claim 5 further comprising not transmitting the second portion of the information packet following the control field and not r…d2+1

›10.↳ 5The method according to claim 5 further comprising at least one of the following:ninserting the control field immediately after the data field;inserti…d2

›11.↳ 5The method according to claim 5 further comprising generating a content of the control field based on data in the data field, the content of the contr…d2

›12.↳ 5The method according to claim 5 further comprising:ntransmitting at least one complete information packet to the transponder in a forward link; andrec…d2+1

›14.↳ 5The method according to claim 5, wherein the protection field comprises symbols configured as CRC protection symbols by which proper data communicatio…d2

›15.independentA system comprising:na control device operable to determine a value of the control field; anda transmitting device operable to:ninserting a control fi…+8

›16.↳ 15The system according to claim 15, the control device being further operable to assign the first value to the control field in response to determining …d2

›17.↳ 15The system according to claim 15, the control device being further operable to assign the second value to the control field in response to determining…d2

›18.↳ 15The system according to claim 15, the transmitting device being further operable to not transmit the second portion of the information packet followin…d2+1

›20.↳ 15The system according to claim 15, the control device being further operable to do at least one of the following:ninsert the control field immediately …d2

›21.↳ 15The system according to claim 15, the control device being further operable to generate a content of the control field based on data in the data field…d2

›22.↳ 15The system according to claim 15 further comprising a receiving device, the transmitting device being further operable to transmit at least one comple…d2+1

Classifications

8 codes

IPC · International Patent Classification

Section H — Electricity

H04J3/24
H04Q5/22
H04L1/18

USPC · US Patent Classification

370/349340/10.1714/751340/10.5714/748

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7.3 y

2,675 days filing → grant

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non-final + final

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Saba Tsegaye

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20070063819 A1	22 Mar 2007

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