System and method for improved uplink signal detection and reduced uplink signal power

A method for reducing transmit power in a mobile device in a network comprising:

• detecting control information from a network node intended for a mobile device during a control channel sub-frame;
• determining if an N_acknack_transmit value >1, and if so, transmitting a negative acknowledge signal (NACK) in two slots allocated to feedback information in two preceding uplink channel sub-frames immediately preceding an uplink channel sub-frame defined for an acknowledgement transmission for downlink channel data associated whith the control information if no acknowledgement transmission occurred in slots as a result of a feedback information process from a preceding control channel sub-frame immediately preceding the control channel sub-frame or a control channel sub-frame preceding the preceding control channel sub-frame;
• receiving the downlink channel data indicated by the control information at the mobile device and transmitting an ACK signal or the NACK signal in accordance with appropriate receipt of the downlink channel data;
• and
• determining if the control information intended for the mobile device is detected in a next valid control channel sub-frame following a sub-frame in which the control information intended for the mobile device was detected, and if not, transmitting a signal in a slot allocated to the feedback information in each of N_acknack_transmit sub-frames starting in the uplink channel sub-frame corresponding to the next valid control channel sub-frame.

A system for controlling transmit power in a mobile device in a network comprising:

• a network device, the network device operatively connected to the network and sending control information in sub-frames of a control channel and associated data in the sub-frames of a downlink channel to at least one mobile device;
• and
• a mobile device, the mobile device operatively connected to the network and detecting control information during a control channel sub-frame intended for the mobile device and performing:
• transmitting to the network device a signal in a slot allocated to feedback information in an uplink channel sub-frame immediately preceding an uplink channel sub-frame defined for an acknowledge (ACK) signal or a negative acknowledge (NACK) signal transmission for downlink channel data associated with the control information if no ACK signal or NACK signal was transmitted in the slot allocated to feedback information in the uplink channel sub-frame as a result of a feedback information process from a control channel sub-frame preceding the control channel sub-frame;
• receiving the downlink channel data indicated by the control information at the mobile device and transmitting an ACK signal or NACK signal in accordance with appropriate receipt of the downlink channel data to the network device;
• and
• determining if the control information intended for the mobile device is detected in a next valid control channel sub-frame following a sub-frame in which the control information intended for the mobile device was detected, and if not, transmitting a signal to the network node in the slot allocated to feedback information in the uplink channel sub-frame corresponding to the next valid control channel sub-frame.

A system for reducing transmit power in a mobile device in a network comprising:

• a network device, the network device operatively connected to the network and sending control information in sub-frames of a control channel and associated data in sub-frames of a downlink channel to at least one mobile device;
• and
• a mobile device, the mobile device operatively connected to the network and detecting control information from the network device intended for the mobile device during a control channel sub-frame and performing:
• determining if an N_acknack_transmit value >1, and if so, transmitting a negative acknowledge signal (NACK) in two slots allocated to feedback information in two preceding uplink channel sub-frames immediately preceding an uplink channel sub-frame defined for an acknowledgement transmission for downlink channel data associated with the control information if no acknowledgement transmission occurred in slots as a result of a feedback information process from a preceding control channel sub-frame immediately preceding said control channel sub-frame or a control channel sub-frame preceding said preceding control channel sub-frame;
• receiving said downlink channel data indicated by the control information at the mobile device and transmitting an ACK signal or the NACK signal in accordance with appropriate receipt of said downlink channel data;
• and
• determining if the control information intended for the mobile device is detected in a next valid control channel sub-frame following a sub-frame in which the control information intended for the mobile device was detected, and if not, transmitting a signal in a slot allocated to feedback information in each of N_acknack_transmit sub-frames starting in the uplink channel sub-frame corresponding to the next valid control channel sub-frame.

A mobile device containing a storage medium with instructions stored therein, the instructions when executed causing the mobile device to perform:

• detecting control information from a network node during a control channel sub-frame intended for the mobile device;
• transmitting a signal in a slot allocated to feedback information in an uplink channel sub-frame immediately preceding an uplink channel sub-frame defined for an acknowledge (ACK) signal or a negative acknowledge (NACK) signal transmission for downlink channel data associated with the control information if no ACK signal or NACK signal was transmitted in a slot allocated to feedback information in the uplink channel sub-frame as a result of a feedback information process from a control channel sub-frame preceding the control channel sub-frame;
• receiving the downlink channel data indicated by the control information at the mobile device and transmitting an ACK signal or NACK signal in accordance with appropriate receipt of the downlink channel data;
• and
• determining if the control information intended for the mobile device is detected in a next valid control channel sub-frame following a sub-frame in which the control information intended for the mobile device was detected, and if not, transmitting a signal in the slot allocated to the feedback information in the uplink channel sub-frame corresponding to the next valid control channel sub-frame.

A mobile device containing a storage medium with instructions stored therein, the instructions when executed causing the mobile device to perform:

• detecting control information from a network node intended for the mobile device during a control channel sub-frame;
• determining if an N_acknack_transmit value >1, and if so, transmitting a negative acknowledge signal (NACK) in two slots allocated to feedback information in two preceding uplink channel sub-frames immediately preceding an uplink channel sub-frame defined for an acknowledgement transmission for downlink channel data associated with the control information if no acknowledgement transmission occurred in slots as a result of a feedback information process from a preceding control channel sub-frame immediately preceding the control channel sub-frame or the control channel sub-frame preceding the preceding control channel sub-frame;
• receiving the downlink channel data indicated by the control information at the mobile device and transmitting an ACK signal or the NACK signal in accordance with appropriate receipt of the downlink channel data;
• and
• determining if the control information intended for the mobile device is detected in a next valid control channel sub-frame following a sub-frame in which the control information intended for the mobile device was detected, and if not, transmitting the NACK signal in a slot allocated to the feedback information in each of N_acknack_transmit sub-frames starting in the uplink channel sub-frame corresponding to the next valid control channel sub-frame.

A network node containing a storage medium with instructions stored therein, the instructions when executed causing the network node to perform:

• sending control information to a mobile device during a control channel sub-frame intended for the mobile device;
• receiving a signal from the mobile device in a slot allocated to feedback information in an uplink channel sub-frame immediately preceding an uplink channel sub-frame defined for an acknowledge (ACK) signal or a negative acknowledge (NACK) signal reception for downlink channel data associated with the control information;
• transmitting the downlink channel data indicated by the control information to the mobile device and receiving the ACK signal or the NACK signal in accordance with appropriate receipt of the downlink channel data by the mobile device;
• and
• receiving the signal from the mobile device in the slot allocated to the feedback information in the uplink channel sub-frame corresponding to a next valid control channel sub-frame, if the mobile device determines that control information intended for the mobile device is not detected in the next valid control channel sub-frame following a sub-frame in which the control information intended for the mobile device was detected.

A network node containing a storage medium with instructions stored therein, the instructions when executed causing the network node to perform:

• sending control information intended for a mobile device during a control channel sub-frame;
• receiving a signal (NACK) from the mobile device in two slots allocated to feedback information in two preceding uplink channel sub-frames immediately preceding an uplink channel sub-frame defined for an acknowledgement reception for downlink channel data associated with the control information if no acknowledgement reception occurred in slots as a result of a feedback information process from a preceding control channel sub-frame immediately preceding the control channel sub-frame or the control channel sub-frame preceding the preceding control channel sub-frame and if an N_acknack_transmit value >1;
• transmitting the downlink channel data indicated by the control information to the mobile device and receiving an ACK signal or NACK signal in accordance with appropriate receipt of the downlink channel data by the mobile device;
• and
• receiving the NACK signal from the mobile device in a slot allocated to the feedback information in each of N_acknack_transmit sub-frames starting in the uplink channel sub-frame corresponding to a next valid control channel sub-frame if the mobile device determined that control information intended for the mobile device is not detected in a next valid control channel sub-frame following the sub-frame in which the control information intended for the mobile device was detected.