# US 2013/0155878 A1 · Methods, systems, and computer readable media for improved long term evolution (lte) hybrid automatic repeat request (harq) processing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0155878 A1 - Document ID: US20130155878A1 - Status: Published application - Kind: A1 - Application number: 13/326,264 - Filed: 2011-12-14 - Published: 2013-06-20 - Earliest claimed: 2011-12-14 - Assignees: Ixia - Inventors: Xinmin Deng; Jong Kwan Choi; Ram Asokan - Web page: https://patentgrep.com/patent/US20130155878A1 ## CPC - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1887: {Scheduling and prioritising arrangements} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Methods, systems, and computer readable media for performing long term evolution (LTE) hybrid automatic repeat request (HARQ) processing are disclosed. According to one method, the method occurs at a multi-UE simulator. The method includes receiving downlink control channel data for a plurality of user devices being simulated. The method also includes decoding HARQ data for each user device of the plurality of user devices. The method further includes performing at least one HARQ data verification step for each user device of the plurality of user devices and acting on the verified HARQ data for each user device of the plurality of user devices. ## Claims ### Claim 1 A method for performing long term evolution (LTE) hybrid automatic rapid request (HARQ) processing, the method comprising: at an LTE multi-UE simulator: receiving downlink control channel data for a plurality of user devices being simulated; decoding HARQ data for each user device of the plurality of user devices; performing at least one HARQ data verification step for each user device of the plurality of user devices; and acting on the verified HARQ data for each user device of the plurality of user devices. ### Claim 2 (depends on 1) The method of claim 1 wherein the HARQ data includes physical HARQ indicator channel (PHICH) information. ### Claim 3 (depends on 2) The method of claim 2 wherein decoding HARQ data for each user device of the plurality of user devices includes decoding physical HARQ indicator channel (PHICH) information and determining, using the decoded PHICH information, that data associated with an LTE user device is to be retransmitted. ### Claim 4 (depends on 3) The method of claim 3 wherein decoding physical HARQ indicator channel (PHICH) data includes determining probability metrics for indicating priority among data to be retransmitted. ### Claim 5 (depends on 4) The method of claim 4 wherein the probability metrics are based on one or more quality factors associated with a signal containing the PHICH information. ### Claim 6 (depends on 3) The method of claim 3 wherein decoding the PHICH information includes determining that a HARQ indicator indicates a negative acknowledgement (NACK), determining that a HARQ indicator indicates an acknowledgement (ACK), or determining that a HARQ indicator is inconclusive. ### Claim 7 (depends on 1) The method of claim 1 wherein performing at least one HARQ data verification step for each user device of the plurality of user devices includes determining that resources associated with retransmitting data for a user device are not allocated for transmitting other data or determining that resources associated with retransmitting data for a user device are allocated for transmitting other data and determining that the other data is a lesser priority than the data. ### Claim 8 (depends on 6) The method of claim 6 wherein determining that a HARQ indicator is inconclusive includes determining that one or more quality factors associated with a signal containing the HARQ indicator does not meet a threshold value. ### Claim 9 (depends on 1) The method of claim 1 wherein acting on the verified HARQ data for each user device of the plurality of user devices includes scheduling a retransmission of data on a physical uplink shared channel (PUSCH) or deactivating a HARQ process associated with a transmission that has been successfully received. ### Claim 10 A system for performing long term evolution (LTE) hybrid automatic rapid request (HARQ) processing, the system comprising: at an LTE multi-UE simulator including: a communications interface configured to receive downlink control channel data for a plurality of user devices being simulated; and an LTE HARQ processing module configured to decode HARQ data for each user device of the plurality of user devices, to perform at least one HARQ data verification step for each user device of the plurality of user devices, and to act on the verified HARQ data for each user device of the plurality of user devices. ### Claim 11 (depends on 10) The system of claim 10 wherein the HARQ data includes physical HARQ indicator channel (PHICH) information. ### Claim 12 (depends on 11) The system of claim 11 wherein the LTE HARQ processing module is configured to decode physical HARQ indicator channel (PHICH) information and determine, using the decoded PHICH information, that data associated with an LTE user device is to be retransmitted. ### Claim 13 (depends on 12) The system of claim 12 wherein the LTE HARQ processing module is configured to determine probability metrics for indicating priority among data to be retransmitted. ### Claim 14 (depends on 13) The system of claim 13 wherein the probability metrics are based on one or more quality factors associated with a signal containing the PHICH information. ### Claim 15 (depends on 12) The system of claim 12 wherein the LTE HARQ processing module is configured to decode the PHICH information by determining that a HARQ indicator indicates a negative acknowledgement (NACK), a HARQ indicator indicates an acknowledgement (ACK), or determining that a HARQ indicator is inconclusive. ### Claim 16 (depends on 10) The system of claim 10 wherein the at least one HARQ data verification step includes determining that resources associated with retransmitting data for a user device are not allocated for transmitting other data or determining that resources associated with retransmitting data for a user device are allocated for transmitting other data and determining that the other data is a lesser priority than the data. ### Claim 17 (depends on 15) The system of claim 15 wherein the LTE HARQ processing module is configured to determine that a HARQ indicator is inconclusive in response to determining that one or more quality factors associated with a signal containing the HARQ indicator does not meet a threshold value. ### Claim 18 (depends on 10) The system of claim 10 wherein the LTE HARQ processing module is configured to act on the verified HARQ data for each user device of the plurality of user devices by scheduling a retransmission of data on a physical uplink shared channel (PUSCH) or deactivating a HARQ process associated with a transmission that has been successfully received ### Claim 19 A non-transitory computer readable medium comprising computer executable instructions embodied in a computer readable medium that when executed by a processor of a computer control the computer to perform steps comprising: at an LTE multi-UE simulator: receiving downlink control channel data for a plurality of user devices being simulated; decoding HARQ data for each user device of the plurality of user devices; performing at least one HARQ data verification step for each user device of the plurality of user devices; and acting on the verified HARQ data for each user device of the plurality of user devices.