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US 10,455,607 B2Granted
Communication methods and apparatus employing rateless codes
AssigneeSharp Laboratories of America, Inc.
InventorsJohn Michael Kowalski, Toshizo Nogami, Jia Sheng, Zhanping Yin
Life of this patent
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Abstract
A wireless terminal and a node employed in a wireless communications system comprise an outer coding unit configured to use a code with properties akin to Raptor codes as outer erasure codes; and an inner coding unit configured to use an LDPC code as pre-code. The wireless terminal and the node use a code with properties akin to Raptor codes as outer erasure codes, and use the LDPC code as a pre-code.
Claims16
A node of a radio access network comprising:
- processor circuitry configured to generate a NT persistent grant message which permits the wireless terminal to transmit NT number of rateless codeword segments representing redundancy versions of a transmission of a wireless terminal;
- a transmitter configured to transmit the NT persistent grant to the wireless terminal;
- wherein the processor circuitry is further configured to generate a new data indicator which indicates that the wireless terminal transmits a new sequence of NT rateless codeword segments corresponding to new message/source bits;
- and
- wherein the processor circuitry is configured to generate the new data indicator before a K number of resources of a previous grant have been completely used.
2 more elements
A wireless terminal comprising:
- transmitter circuitry configured to transmit a schedule request to a node of a radio access network;
- a receiver configured to receive from the node a NT persistent grant message which permits the wireless terminal to transmit NT number of rateless codeword segments representing redundancy versions of a transmission of the wireless terminal;
- a processor configured to generate the NT number of rateless codeword segments;
- a transmitter configured to transmit the NT number of rateless codeword segments to the node,
- wherein the processor circuitry is further configured to receive from the node a new data indicator which indicates that the wireless terminal may transmit a new sequence of NT rateless codeword segments corresponding to new message/source bits;
- and
- wherein the NT persistent grant message indicates to the wireless terminal that K number of resources are used for transmission of the NT number of rateless codeword segments.
4 more elements
Dependencies are inferred from the claim text.