Inserting error detection codes into information packets on a one-to-one basis, at a certain layer at which signal processing is performed earlier than at a physical layer
First Claim
1. A transmission method of performing transmission with use of parity packets, the transmission method comprising:
- a first error detection code insertion step of inserting at a certain layer, by a first error detection code insertion unit of a processor, error detection codes into information packets on a one-to-one basis to obtain first information packets, the certain layer being a layer at which signal processing is performed earlier than at a first layer;
a parity packet generation step of generating at the certain layer, by a parity packet generation unit of the processor, parity packets by coding the information packets;
a second error detection code insertion step of inserting at the certain layer, by a second error detection code insertion unit of the processor, error detection codes into the parity packets on a one-to-one basis to obtain first parity packets;
a first layer coding step of coding at the first layer, by a first layer coding unit of the processor, the first information packets and the first parity packets to obtain second information packets and second parity packets, respectively,a transmission step of initially transmitting, by a transmission unit of the processor, the second information packets; and
a parity packet transmission step of transmitting, by the transmission unit of the processor, the second parity packets to each of one or more receivers with reference to feedback information obtained from the receiver.
2 Assignments
0 Petitions
Accused Products
Abstract
Problem: A packet error rate in a receiver needs to be effectively reduced.
Solution to Problem: A transmitter 11 inserts error detection codes into information packets on one-to-one basis, at a certain layer at which signal processing is performed earlier than at a physical layer, to obtain first information packets. The transmitter 11 codes the first information packets at the physical layer to obtain second information packets, and transmits the second information packets. At the certain layer, the transmitter 11 generates parity packets by coding the information packets and inserts the error detection codes into the parity packets on one-to-one basis to obtain first parity packets. The transmitter codes the first parity packets at the physical layer to obtain second parity packets. The transmitter 11 transmits the second parity packets in accordance with a transmission request from each of one or more receivers.
7 Citations
8 Claims
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1. A transmission method of performing transmission with use of parity packets, the transmission method comprising:
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a first error detection code insertion step of inserting at a certain layer, by a first error detection code insertion unit of a processor, error detection codes into information packets on a one-to-one basis to obtain first information packets, the certain layer being a layer at which signal processing is performed earlier than at a first layer; a parity packet generation step of generating at the certain layer, by a parity packet generation unit of the processor, parity packets by coding the information packets; a second error detection code insertion step of inserting at the certain layer, by a second error detection code insertion unit of the processor, error detection codes into the parity packets on a one-to-one basis to obtain first parity packets; a first layer coding step of coding at the first layer, by a first layer coding unit of the processor, the first information packets and the first parity packets to obtain second information packets and second parity packets, respectively, a transmission step of initially transmitting, by a transmission unit of the processor, the second information packets; and a parity packet transmission step of transmitting, by the transmission unit of the processor, the second parity packets to each of one or more receivers with reference to feedback information obtained from the receiver. - View Dependent Claims (2, 3, 4, 5)
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6. A transmitter comprising
a first error detection code insertion unit operable to insert, at a certain layer, error detection codes into information packets on a one-to-one basis to obtain first information packets, the certain layer being a layer at which signal processing is performed earlier than at a first layer; -
a parity packet generation unit operable to generate, at the certain layer, parity packets by coding the information packets; a second error detection code insertion unit operable to insert, at the certain layer, error detection codes into the parity packets on a one-to-one basis to obtain first parity packets; a first layer coding unit operable to code, at the first layer, the first information packets and the first parity packets to obtain second information packets and second parity packets, respectively, a transmission unit operable to initially transmit the second information packets; and a parity packet transmission unit operable to transmit the second parity packets to each of one or more receivers with reference to feedback information obtained from the receiver. - View Dependent Claims (7, 8)
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Specification