ACK/NACK determination reliability for a communication device
View Patent ↗A method for ACK/NACK determination reliability for a communication device includes a first step of defining a supplementary indicator of message acceptability. A next step includes sending data from a communication device to a BTS on an uplink channel. A next step includes checking the data to see if it was properly received. A next step includes providing the supplementary indicator of message acceptability to the communication device in addition to ACK/NACK information. A next step includes utilizing the supplementary indicator of message acceptability to determine a reliability of the ACK/NACK information.
1. A method for ACK/NACK determination reliability for a communication device, the method comprising:
defining a New Data Expected (NDE) indicator that indicates whether a base station (BTS) is expecting new data;
sending data from the communication device to the BTS on an uplinik channel, the data including a new data indication (NDI) of whether new data is being sent;
checking if the data was properly received using an ACK/NACK information;
receiving the NDE at the communication device in addition to the ACK/NACK information; and
utilizing the NDE to determine a reliability of the ACK/NACK information.
2. The method of claim 1 , wherein the ACK/NACK information of the receiving step is coded into a scheduling assignment message (SAM) from the a BTS downlinik ACK/NACK code channel.
3. The method of claim 1 , wherein if a NACK is received in the checking step and the NDE indicates that new data is expected, further comprising:
sending an indication of new data along with a new packet of data.
4. The method of claim 1 , wherein if an ACK is received in the checking step and the NDE indicates that new data is not expected, further comprising:
sending an indication of previous data along with resending the data.
5. The method of claim 1 , further comprising:
operating the communication device in soft handoff, and
wherein the receiving step includes receiving the NDE and ACK/NACK information from a first base station assigned as a scheduling base station and ACK/NACK information from a second base station assigned as a non-scheduling base station to the communication device, and
wherein if the utilizing indicates a conflict between a received ACK and the NDE from the first base station, and an ACK is received from the second base station, then the receiving step includes measuring relative levels of a quality of signal (QoS) of the first base station and the second base station for inclusion in the utilizing to determine reliability of the ACK/NACK information, and
wherein if the relative levels of the QoS between the first base station and the second base station has changed indicating that the second base station now has a better QoS than the first base station further comprising:
assigning the second base station as a scheduling base station, and sending new packet data to the second base station.
6. The method of claim 1 , wherein upon a reliable NACK determination in the utilizing step, further comprising:
waiting a first predetermined time period for a subsequent SAM from the BTS, and
flushing the data from a buffer of the communication device if the subsequent SAM is not received before the first predetermined time period expires.
7. The method of claim 1 , wherein upon a reliable NACK determination in the utilizing step, further comprising:
waiting a second predetermined time period for a subsequent SAM from the BTS, and
resending the data from a buffer of the communication device if the subsequent SAM is not received before the second predetermined time period expires.
8. A method for ACK/NACK determination reliability for a communication device, the method comprising:
defining a New Data Expected (NDE) indicator that indicates whether a base station (BTS) is expecting new data;
sending data from the communication device to the BTS on an uplinik channel, the data including a new data indication (NDI) of whether new data is being sent;
checking if the data was properly received using an ACK/NACK information;
receiving the NDE at the communication device in addition to the ACK/NACK information; and
utilizing the NDE to determine a reliability of the ACK/NACK information such that
if a NACK is received in the checking step and the NDE indicates that new data is expected, sending an indication of new data along with a new packet of data, and
if an ACK is received in the checking step and the NDE indicates that new data is not expected, sending an indication of previous data along with resending the data.
9. The method of claim 8 , further comprising:
operating the communication device in soft handoff, and
wherein the receiving step includes receiving the NDE and ACK/NACK information from a first base station assigned as a scheduling base station and ACK/NACK information from a second base station assigned as a non-scheduling base station at the communication device, and
wherein if the utilizing step indicates a conflict between a received ACK and the NDE from the first base station, and an ACK is received from the second base station, then the receiving step includes measuring relative levels of a quality of signal (QoS) of the first base station and the second base station for inclusion in the utilizing step to determine reliability, and wherein if the relative levels of the QoS between the first base station and the second base station has changed indicating that the second base station now has a better QoS than the first base station further comprising:
assigning the second base station as a scheduling base station, and sending new packet data to the second base station.