METHODS AND SYSTEMS FOR HARQ PROTOCOLS
First Claim
1. A method comprising:
- for a HARQ process, the HARQ process comprising a first transmission of an encoder packet and at least one retransmission, in which a transmission resource for each respective transmission is allocated;
transmitting control information from a base station to a mobile station for each respective transmission, the control information comprising;
information to uniquely identify the HARQ process; and
an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission.
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Accused Products
Abstract
Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. In some embodiments of the invention, specific control information is signalled from a base station to a mobile station to enable RAS-HARQ operation. In some embodiments of the invention, retransmission signaling in included as part of regular unicast signaling used for both first transmission and retransmissions. In some embodiments of the invention, a 3-state acknowledgement channel and associated error recovery operation enables the base station and mobile station to recover from control signaling error and reduce packet loss.
110 Citations
19 Claims
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1. A method comprising:
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for a HARQ process, the HARQ process comprising a first transmission of an encoder packet and at least one retransmission, in which a transmission resource for each respective transmission is allocated; transmitting control information from a base station to a mobile station for each respective transmission, the control information comprising; information to uniquely identify the HARQ process; and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. - View Dependent Claims (2, 3, 4, 5, 6, 12)
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7. A method for acknowledging a DL HARQ transmission comprising:
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receiving an encoder packet; if the encoder packet is successfully decoded, transmitting an acknowledgement (ACK); if the encoder packet is not successfully decoded, transmitting a negative acknowledgement (NAK); if no retransmission is received within a predetermined time period of transmitting the NAK, transmitting a NULL indicating that no control information signalling pertaining to the retransmission has been received.
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8. A method for acknowledging a DL HARQ transmission comprising:
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if an acknowledgement (ACK) in response to a previously transmitted encoder packet has been received, not retransmitting an encoder packet; if a negative acknowledgement (NAK) in response to a previously transmitted encoder packet has been received, retransmitting a sub-packet of the encoder packet; if a NULL is received indicating that no control information signalling has been received by a sender of the NULL regarding a previously transmitted encoder packet, retransmitting at least a sub-packet of the encoder packet. - View Dependent Claims (9, 10, 11)
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13. A method of error recovery for a UL HARQ transmission comprising:
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if a NULL is received in response to a previously transmitted sub-packet of an encoder packet that is a first sub-packet transmission; dynamically scheduling a retransmission of the first sub-packet transmission at any time; retransmitting the first sub-packet transmission, the first sub-packet transmission comprising control information signaling sent in a first sub-packet transmission; if a NULL is received in response to a previously transmitted sub-packet of an encoder packet that is a subsequent sub-packet transmission to a first sub-packet transmission; scheduling a retransmission of the first sub-packet transmission at a predetermined time; retransmitting the subsequent sub-packet transmission, the subsequent sub-packet transmission comprising control signaling information that comprises; information to uniquely identify the HARQ process; and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the subsequent sub-packet transmission.
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14. A method comprising:
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in a system having a known HARQ acknowledgement (ACK) delay, retransmit delay and number of HARQ interlaces, which are each defined in configuration signalling sent to a mobile station and which are a function of at least one of a time division duplexing downlink/uplink (TDD DL/UL) ratio and a frequency division duplexing downlink/uplink (FDD DL/UL) ratio, at a base station, determining the timing for receiving an ACK/NAK from a mobile station based on configuration signalling in response to a previously sent transmission of an encoder packet by the base station; and at a mobile station, determining the timing for receiving one of a transmission and a retransmission of a sub-packet of an encoder packet from a base station based on the configuration signalling in response to a previously sent NAR by the mobile station. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification