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US 10,951,281 B2Granted
Single codeword, multi-layer serial interference cancellation (SIC) for spatial multiplexing
AssigneeAT&T Intellectual Property I, L.P.
InventorSairamesh Nammi
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Abstract
Aspects of the subject disclosure can include, for example, a first logical codeword is associated with multiple layers of a MIMO system to obtain a logical codeword mapping. The first logical codeword is associated with a hybrid automatic receive request (HARQ) process identifier and based on a first number of channel-encoded codewords of a first number of transport data blocks. In response to detection of an error in one of the channel-encoded codewords, a modified first logical codeword is generated based on the one channel-encoded codeword and mapped to the number of layers of the MIMO s system for transmission to the receiver for further processing associated with the HARQ identifier. Other embodiments are disclosed.
Claims20
A method, comprising:
- mapping, by a processing system including a processor, a first logical codeword to a plurality of layers of a multiple-input-multiple-output (MIMO) spatial multiplexing system to obtain a logical codeword mapping, the first logical codeword being associated with a hybrid automatic receive request (HARQ) process identifier and based on a first plurality of channel-encoded codewords of a first plurality of transport data blocks, a MIMO signal being adapted for wireless transmission to a receiver configured to perform MIMO detection of the MIMO signal and to obtain independent error detection results for each of the channel-encoded codewords of the first logical codeword;
- identifying, by the processing system, an error encountered during transmission of the MIMO signal, wherein the error is based on a channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword;
- and
- generating, by the processing system and responsive to the identifying of the error, a modified first logical codeword based on the channel-encoded codeword of the first plurality of channel-encoded codewords, the modified first logical codeword being associated with the HARQ process identifier, wherein the modified first logical codeword is mapped to the plurality of layers of the MIMO spatial multiplexing system for transmission to the receiver for further processing associated with the HARQ process identifier.
1 more element
A device, comprising:
- a processing system including a processor;
- and
- a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising:
- mapping a first logical codeword to a plurality of layers of a multiple-input-multiple-output (MIMO) spatial multiplexing system to obtain a logical codeword mapping, the first logical codeword being associated with a hybrid automatic receive request (HARQ) process identifier and based on a first plurality of channel-encoded codewords of a first plurality of transport data blocks, and a MIMO signal being adapted for wireless transmission to a receiver configured to perform MIMO detection of the MIMO signal and to obtain error detection results for each of the channel-encoded codewords of the first logical codeword;
- determining an error encountered during transmission of the MIMO signal, wherein the error is based on a channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword;
- and
- determining, responsive to the determining of the error, a modified first logical codeword based on the channel-encoded codeword of the first plurality of channel-encoded codewords, the modified first logical codeword being associated with the HARQ process identifier, wherein the modified first logical codeword is mapped to the plurality of layers of the MIMO spatial multiplexing system for transmission to the receiver for further processing associated with the HARQ process identifier.
4 more elements
A non-transitory, machine-readable storage medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, comprising:
- associating a first logical codeword with a plurality of layers of a multiple-input-multiple-output (MIMO) spatial multiplexing system to obtain a logical codeword mapping, the first logical codeword being associated with a hybrid automatic receive request (HARQ) process identifier and based on a first plurality of channel-encoded codewords of a first plurality of transport data blocks, a MIMO signal being adapted for wireless transmission to a receiver configured to perform MIMO detection of the MIMO signal and to obtain independent error detection results for each of the channel-encoded codewords of the first logical codeword;
- and
- generating, responsive to a detection of a transmission error, a modified first logical codeword based on a channel-encoded codeword of the first plurality of channel-encoded codewords, the modified first logical codeword being associated with the HARQ process identifier, wherein the modified first logical codeword is mapped to the plurality of layers of the MIMO spatial multiplexing system for transmission to the receiver for further processing associated with the HARQ process identifier, and wherein the error is encountered during transmission of the MIMO signal and based on the channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword.
Dependencies are inferred from the claim text.