US 8,711,829 B2 · Method and apparatus for error correction in MBMS receipt system

Abstract

Provided is an error correcting method that can provide improved error correction efficiency in a multimedia broadcast/multicast service (MBMS) by marking the presence of an error in a Protocol Data Unit (PDU) with an error instead of discarding the erroneous PDU in an MBMS terminal of the MBMS system, which performs error correction in an application layer, and transmitting the erroneous PDU together with a PDU without an error to the application layer, and an error correction apparatus employing the method. The MBMS terminal includes: a radio link control (RLC) protocol processor configured to receive PDUs generated from the reception data, generate service data units (SDUs) by combining the PDUs, mark whether there is an SDU recovered from a PDU with an error, and output the SDUs; and a packet data convergence protocol (PDCP) processing means configured to receive and deliver the SDUs.

Claims25

Dependent claims

A multimedia broadcast/multicast service (MBMS) terminal capable of correcting an error in reception data in an MBMS receiving system, comprising:

a radio link control (RLC) protocol processor configured to:
receive protocol data units (PDUs) generated from the reception data;
identify received PDUs having an error;
generate service data units (SDUs) by combining the PDUs;
mark whether there is an SDU recovered from a PDU identified as having an error;
and
output the SDUs including SDUs recovered from PDUs identified as having an error;
and
a packet data convergence protocol (PDCP) processor configured to
receive the SDUs from the RLC protocol processer;
form a User Datagram Protocol (UDP) checksum for an SDU recovered from a PDU identified as having an error in order to prevent that SDU from being discarded in a UDP upper layer;
and
deliver the SDUs to the UDP upper layer.

10 more elements

Dependencies are inferred from the claim text.

Method and apparatus for error correction in MBMS receipt system

Life of this patent

Method and apparatus for error correction in MBMS receipt system

Life of this patent

Abstract

Claims25