Method for transmitting status report of PDCP layer in mobile telecommunications system and receiver of mobile telecommunications
First Claim
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1. A method for transmitting a status report of a Packet Data Convergence Protocol (PDCP) layer in a mobile communications system, in a method for transmitting, by a receiving side PDCP layer, a status report for a series of data to a transmitting side PDCP layer, the method comprising:
- determining, by the receiving side PDCP layer, a reception status of the series of data, wherein the series of data are PDCP Service Data Units (SDUs); and
transmitting, by the receiving side PDCP layer, a reception status report for the PDCP SDUs to the transmitting side PDCP layer, such that the transmitting side PDCP layer is able to transmit or retransmit the series of data during handover, wherein the reception status report is transmitted in the form of a bitmap including sequence number (SN) information of the PDCP SDUs indicating whether or not the PDCP SDUs have successfully been received,wherein the format of the PDCP data including the reception status report comprises a D/C field, a PDU type field, a bitmap field and a field including SN information on a PDCP SDU corresponding to the first or last bit of the bitmap field, the PDCP data being configured by arranging the fields in the order of the D/C field, the PDU type field, the field including the SN information of the PDCP SDU, and the bitmap field.
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Abstract
Disclosed is a status report transmission of the PDCP layer for a PDCP status report which can reduce radio resources, by transmitting the reception success or failure of a series of PDCP SDUs in the form of a bitmap when configuring the PDCP status report for reporting a reception status of the PDCP SDU to another party in the PDCP layer in the LTE system.
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Citations
12 Claims
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1. A method for transmitting a status report of a Packet Data Convergence Protocol (PDCP) layer in a mobile communications system, in a method for transmitting, by a receiving side PDCP layer, a status report for a series of data to a transmitting side PDCP layer, the method comprising:
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determining, by the receiving side PDCP layer, a reception status of the series of data, wherein the series of data are PDCP Service Data Units (SDUs); and transmitting, by the receiving side PDCP layer, a reception status report for the PDCP SDUs to the transmitting side PDCP layer, such that the transmitting side PDCP layer is able to transmit or retransmit the series of data during handover, wherein the reception status report is transmitted in the form of a bitmap including sequence number (SN) information of the PDCP SDUs indicating whether or not the PDCP SDUs have successfully been received, wherein the format of the PDCP data including the reception status report comprises a D/C field, a PDU type field, a bitmap field and a field including SN information on a PDCP SDU corresponding to the first or last bit of the bitmap field, the PDCP data being configured by arranging the fields in the order of the D/C field, the PDU type field, the field including the SN information of the PDCP SDU, and the bitmap field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A receiver in a mobile communications system comprising:
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a processor configured to determine whether or not PDCP SDUs received via a Packet Data Convergence Protocol (PDCP) layer have successfully been received, generate information related to the reception success or failure of the determined PDCP SDUs in the form of a bitmap, and include the information generated in the form of the bitmap in a PDCP Protocol Data Unit (PDU), such that a transmitting side PDCP layer is able to transmit or retransmit a series of data during handover, wherein the PDCP PDU comprises a D/C field, a PDU type field, a bitmap field, and a field including Sequence Number (SN) information of a PDCP SDU corresponding to the first or last bit of the bitmap field, the PDCP PDU being configured by arranging the fields in the order of the D/C field, the PDU type field, the field including the SN information of the PDCP SDU, and the bitmap field. - View Dependent Claims (11, 12)
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Specification