Reception apparatus, transmission apparatus, reception method, and transmission method
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorMasanori Kosugi
Life of this patent
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Abstract
A reception apparatus includes a receiver and circuitry. The receiver receives, from a transmission apparatus, a plurality of packets that include code word symbols which include an information word symbol and a parity symbol. The information word symbol is generated from transmission information. The parity symbol is calculated from the information word symbols. The circuitry decodes the code word symbols that are included in the plurality of packets. The number of first packets and the number of second packets among the plurality of packets are shared between the transmission apparatus and the reception apparatus. Each of the first packets includes the information word symbol. Each of the second packets includes the parity symbol.
Claims9
A system comprising:
- a transmission apparatus comprising:
- a transmitter, which, in operation, transmits, over a network, a plurality of packets that include:
- first packets that include information word symbols generated from transmission information;
- second packets that include parity symbols generated from the information word symbols;
- and
- a third packet including an error detection code for the information word symbols, the third packet being included at a border between the first packets and the second packets, and the plurality of packets including a respective plurality of flags indicating whether a symbol included in a packet is an information word symbol or a parity symbol;
- and
- a reception apparatus comprising:
- a receiver, which, in operation, receives the plurality of packets over the network;
- and
- circuitry, which, in operation,
- in response to determining that one or more packets are lost,
- determines a number of the first packets and a number of the second packets based on the plurality of flags;
- based on the numbers of the first packets and the second packets, determines a plurality of permutations of the plurality of packets and the one or more packets in which positions of the one or mare packets in relation to positions of the plurality of packets are varied;
- and
- evaluates a permutation of the plurality of permutations to decode the information word symbols included in the plurality of packets,
- wherein the error detection code is based on a different error detection scheme than the parity symbols.
A method comprising:
- transmitting, by a transmission apparatus, a plurality of packets over a network, the plurality of packets including:
- first packet that include information word symbols generated from transmission information;
- second packets that include parity symbols generated from the information word symbols;
- and
- a third packet including an error detection code for the information word symbols, the third packet being included at a border between the first packets and the second packets, and the plurality of packets including a respective plurality of flags indicating whether a symbol included in a packet is an information word symbol or a parity symbol;
- receiving, by a reception apparatus, the plurality of packets over the network;
- determining that one or more packets are lost;
- and
- in response to determining that the one or more packets are lost,
- determining a number of the first packets and a number of the second packets based on the plurality of flags;
- determining, based on the numbers of the first packets and the second packets, a plurality of permutations of the plurality of packets and the one or more packets in which positions of the one or more packets in relation to positions of the plurality of packets are varied;
- and
- evaluating a permutation of the plurality of permutations to decode the information word symbols that are included in the plurality of packets,
- wherein the error detection collie is based on a different Error detection scheme than the parity symbols.
Dependencies are inferred from the claim text.