Apparatus, and associated method, for requesting data retransmission in a packet radio communication system
First Claim
1. An apparatus comprising:
- processing circuitry; and
a storage device comprising algorithms, the processing circuitry configured to execute the algorithms, which causes the apparatus to;
enable transmission of packet formatted data formatted at a first logical layer comprising a lower layer, utilizing a first-layer acknowledgement mechanism and enable transmission of the packet formatted data at a second logical layer comprising an upper layer that is higher than the lower layer, utilizing a second-layer acknowledgment mechanism; and
generate an estimate of a selected second logical layer delay period, in response to received indicia, by which to delay generation of a second logical layer resend request requesting resending of the packet formatted data in an instance in which a determination reveals that the packet formatted data is unsuccessfully delivered to a second logical layer of a terminal, wherein the estimate of the selected second logical layer delay period is a fixed delay period based in part on the received indicia that is associated with communication characteristics corresponding to radio quality information of a communication system, the estimate of second logical layer delay period is generated prior to sending of the second logical layer resend request.
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Accused Products
Abstract
Apparatus, and an associated method, that reduces the occurrence of generation of redundant requests for retransmission of packet-formatted data, formatted at a physical layer and at a higher-logical layer, such as at an RLP layer. An estimate of an appropriate delay period is formed. The estimate is responsive to communication conditions in the communication system. When a data packet appears to have been inadequately delivered to the RLP logical layer, a DELAY_DETECTION_WINDOW timer is caused to time out the delay period estimated by the estimator. The request for retransmission, generated at the RLP layer, is permitted, upon expiration of the timer if the data packet has not yet been successfully delivered to the RLP layer and the transmitter has not given up the data packet delivery.
68 Citations
26 Claims
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1. An apparatus comprising:
- processing circuitry; and
a storage device comprising algorithms, the processing circuitry configured to execute the algorithms, which causes the apparatus to; enable transmission of packet formatted data formatted at a first logical layer comprising a lower layer, utilizing a first-layer acknowledgement mechanism and enable transmission of the packet formatted data at a second logical layer comprising an upper layer that is higher than the lower layer, utilizing a second-layer acknowledgment mechanism; and generate an estimate of a selected second logical layer delay period, in response to received indicia, by which to delay generation of a second logical layer resend request requesting resending of the packet formatted data in an instance in which a determination reveals that the packet formatted data is unsuccessfully delivered to a second logical layer of a terminal, wherein the estimate of the selected second logical layer delay period is a fixed delay period based in part on the received indicia that is associated with communication characteristics corresponding to radio quality information of a communication system, the estimate of second logical layer delay period is generated prior to sending of the second logical layer resend request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- processing circuitry; and
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15. A method comprising:
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enabling transmission of packet formatted data formatted at a first logical layer comprising a lower layer, utilizing a first-layer acknowledgement mechanism and enabling transmission of the packet formatted data at a second logical layer comprising an upper layer that is higher than the lower layer, utilizing a second-layer acknowledgment mechanism; and generating, via processing circuitry, an estimate of a selected second logical layer delay period, in response to received indicia, by which to delay generation of a second logical layer resend request requesting resending of the packet formatted data in an instance in which a determination reveals that the packet formatted data is unsuccessfully delivered to a second logical layer of a terminal, wherein the estimate of the selected second logical layer delay period is a fixed delay period based in part on the received indicia that is associated with communication characteristics corresponding to radio quality information of a communication system the estimate of the selected second logical layer delay period is generated prior to sending of the second logical layer resend request. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. An apparatus comprising:
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processing circuitry; and a storage device comprising algorithms, the processing circuitry configured to execute the algorithms, which causes the apparatus to; receive packet formatted data, the packet formatted data formatted at a first logical layer comprising a lower layer, utilizing a first-layer acknowledgment mechanism; selectably acknowledge whether the packet formatted data is accurately received thereat at the first logical layer and, the packet formatted data formatted at a second logical layer comprising an upper layer that is higher than the lower layer, utilizing a second-layer acknowledgement mechanism; selectably acknowledge whether the packet formatted data is accurately received thereat at the second logical layer; and receive an estimate of a selected second logical layer delay period by which to delay generation of a second logical layer resend request requesting resending of the packet-formatted data, the estimate of the selected second logical layer delay period is a fixed delay period based in part on received indicia associated with communication characteristics corresponding to radio quality information of a communication system, the second logical layer delay period is generated prior to sending of the second logical layer resend request. - View Dependent Claims (24)
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25. An apparatus comprising:
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processing circuitry; and a storage device comprising algorithms, the processing circuitry configured to execute the algorithms, which causes the apparatus to; receive packet formatted data, the packet formatted data formatted at a first logical layer comprising a lower layer, utilizing a first-layer acknowledgement mechanism; selectably acknowledge whether the packet formatted data is accurately received thereat at the first logical layer and, the packet formatted data formatted at a second logical layer comprising an upper layer that is higher than the lower layer, utilizing a second-layer acknowledgement mechanism; selectably acknowledge whether the packet formatted data is accurately received thereat at the second logical layer; receive and detect a delay period message, the delay period message having an indicia associated with a selected second logical layer delay period; receive indications of the indicia associated with the selected second logical layer delay period contained in the delay period message; and time a time period indicated by the received indicia in an instance in which the packet formatted data appears to be inaccurately delivered to the second logical layer of the apparatus, and wherein the time period is based in part on the received indicia that is associated with communication characteristics corresponding to radio quality information of a communications system, the second logical layer delay period is a fixed delay period and is generated prior to sending of a second logical layer resend request requesting resending of the packet formatted data. - View Dependent Claims (26)
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Specification