Method for sending status information in mobile telecommunications system and receiver of mobile telecommunications
First Claim
1. A method for constructing a status protocol data unit (PDU) for providing a positive acknowledgement (ACK) and a negative acknowledgement (NACK) of acknowledged mode data (AMD) PDUs of radio link control (RLC) PDUs or portions of the RLC PDUs in a mobile communications system, the method comprising:
- receiving, by a device, size information on a total size of at least one RLC PDU;
constructing, by the device, a status PDU for AMD PDUs by considering the total size of the at least one RLC PDU, the status PDU including sequence numbers that include a sequence number (SN) of a receive state variable and at least one sequence number between the sequence number of the receive state variable and a sequence number of a maximum status transmit state variable such that the constructed status PDU includes following sequence;
an Acknowledgement Sequence Number (ACK SN) to indicate the maximum status transmit state variable followed by a first Negative Acknowledgement Sequence Number (NACK SN) for a first AMD PDU of the AMD PDUs followed by a NACK_SN element, the NACK_SN element comprising a second NACK_SN, a segment offset start (SOstart) and a segment offset end (SOend) for a partly received AMD PDU of the AMD PDUs; and
transmitting, by the device, the constructed status PDU.
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Abstract
Discussed is a method of sending status information (STATUS PDU) in which a receiving side reports a data received state to a transmitting side in a mobile telecommunication system. A receiving side RLC entity considers an available radio resource to construct a status PDU fit to the size of the radio resource and then sends the constructed status PDU to a transmitting side RLC entity, thereby avoiding a deadlock situation of RLC protocols.
88 Citations
16 Claims
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1. A method for constructing a status protocol data unit (PDU) for providing a positive acknowledgement (ACK) and a negative acknowledgement (NACK) of acknowledged mode data (AMD) PDUs of radio link control (RLC) PDUs or portions of the RLC PDUs in a mobile communications system, the method comprising:
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receiving, by a device, size information on a total size of at least one RLC PDU; constructing, by the device, a status PDU for AMD PDUs by considering the total size of the at least one RLC PDU, the status PDU including sequence numbers that include a sequence number (SN) of a receive state variable and at least one sequence number between the sequence number of the receive state variable and a sequence number of a maximum status transmit state variable such that the constructed status PDU includes following sequence;
an Acknowledgement Sequence Number (ACK SN) to indicate the maximum status transmit state variable followed by a first Negative Acknowledgement Sequence Number (NACK SN) for a first AMD PDU of the AMD PDUs followed by a NACK_SN element, the NACK_SN element comprising a second NACK_SN, a segment offset start (SOstart) and a segment offset end (SOend) for a partly received AMD PDU of the AMD PDUs; andtransmitting, by the device, the constructed status PDU. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device configured to construct a status protocol data unit (PDU) for providing a positive acknowledgement (ACK) and a negative acknowledgement (NACK) of acknowledged mode data (AMD) PDUs of radio link control (RLC) PDUs or portions of the RLC PDUs in a mobile communications system, the device comprising:
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a transceiver configured to receive size information on a total size of at least one RLC PDU; a processor configured to construct a status PDU for AMD PDUs by considering the total size of the at least one RLC PDU, the status PDU including sequence numbers that include a sequence number (SN) of a receive state variable and at least one sequence number between the sequence number of the receive state variable and a sequence number of a maximum status transmit state variable such that the constructed status PDU includes following sequence;
an Acknowledgement Sequence Number (ACK SN) to indicate the maximum status transmit state variable followed by a first Negative Acknowledgement Sequence Number (NACK SN) for a first AMD PDU of the AMD PDUs followed by a NACK_SN element, the NACK_SN element comprising a second NACK_SN, a segment offset start (SOstart) and a segment offset end (SOend) for a partly received AMD PDU of the AMD PDUs; andthe transceiver configured to transmit the constructed status PDU. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification