Adaptive operational full-duplex and half-duplex FDD modes in wireless networks

A client device capable of operating in a plurality of duplexing modes on a wireless network, said client device comprising:

• a processing device coupled to a memory;
• a radio/modem subsystem coupled to said processing device, the radio/modem subsystem comprising a duplexing component configured to support at least a first and second duplexing mode of operation with a serving station;
• and
• a storage device in data communication with the processing device, the storage device comprising computer-executable instructions, which are configured to when executed by the processing device, cause the client device to:
• signal the duplex component, directly or indirectly, resident within said client device to operate in the first duplexing mode of operation;
• and
• substantially in response to a detected trigger event, signal said duplex component to operate in the second duplexing mode of operation;
• wherein said first duplexing mode comprises a half-duplex frequency division duplexing (FDD) mode of operation, and said second duplexing mode comprises a full-duplex FDD mode of operation;
• and
• wherein said trigger event comprises a rising timing advance (TA) value,
• wherein the rising TA value corresponds to a length of time a user equipment (UE) has to advance its timing of uplink (UL) transmission and is sent by an eNodeB to the UE according to a perceived propagation delay of UL transmissions,
• wherein the rising TA value comprises an increased value relative to a previous TA value and is used to compare with a threshold in order to decide whether to change the first duplexing mode to the second duplexing mode.

A serving station apparatus configured to adapt duplexing operation for a plurality of client devices in a multiple access wireless network, the serving station apparatus comprising:

• a processing device coupled to a memory;
• a radio modem subsystem in operative communication with the processing device;
• and
• a storage device in operative communication with the processing device, the storage device comprising computer-executable instructions, which are configured to, when executed by the processing device, cause the serving station apparatus to:
• establish communications to the plurality of client devices according to a first duplexing mode;
• responsive to one or more trigger events, determine a second duplexing mode;
• distribute information about the second duplexing mode to at least a portion of the plurality of client devices;
• and
• cause operation of said network in the second duplexing mode by at least in part causing the portion of the plurality of client devices to switch to the second duplexing mode;
• wherein:
• said network comprises (i) an uplink physical channel characterized by at least an uplink frequency resource, and (ii) a downlink physical channel characterized by at least a downlink frequency resource;
• the first duplexing mode is configured to utilize at least a portion of the uplink frequency resource by allocating a plurality of uplink subframes and one or more guard subframe, and at least a portion of the downlink frequency resource by allocating a plurality of downlink subframes and one or more guard subframe;
• the second duplexing mode is configured to utilize the entire uplink frequency resource and the entire downlink frequency resource;
• wherein the first duplexing mode comprises a half-duplex frequency division duplexing (FDD) mode of operation and the second duplexing mode comprises a full-duplex FDD mode of operation;
• and
• where the one or more trigger events comprise a rising timing advance (TA) value,
• wherein the rising TA value corresponds to a length of time a user equipment (UE) has to advance its timing of uplink (UL) transmission and is sent by an eNodeB to the UE according to a perceived propagation delay of UL transmissions,
• wherein the rising TA value comprises an increased value relative to a previous TA value and is used to compare with a threshold in order to decide whether to change the first duplexing mode to the second duplexing mode.

A client device capable of operating in a multiple access wireless network, the client device comprising:

• a processing device coupled to a memory;
• a radio subsystem coupled to the processing device, the radio subsystem comprising a duplexing component configured to support at least first and second duplexing modes of operation with a serving station, the first duplexing mode of operation comprising a full-duplex frequency division duplexing (FDD) mode, and the second duplexing mode of operation comprising a half-duplex FDD mode;
• and
• a storage device in data communication with the processing device, the storage device comprising computer-executable instructions that are configured to, when executed by the processing device:
• signal, directly or indirectly, the duplex component resident within the client device to operate in the first duplexing mode;
• and
• substantially in response to a detected trigger event, signal the duplex component to operate in the second duplexing mode;
• and
• wherein the trigger event comprises a falling timing advance (TA) value,
• wherein the falling TA value corresponds to a length of time a user equipment (UE) has to advance its timing of uplink (UL) transmission and is sent by an eNodeB to the UE according to a perceived propagation delay of UL transmissions,
• wherein the falling TA value comprises a decreased value relative to a previous TA value and is used to compare with a threshold in order to decide whether to change the first duplexing mode to the second duplexing mode.

A client device capable of operating in a multiple access wireless network, the client device comprising:

• a processing device coupled to a memory;
• a radio subsystem coupled to the processing device, the radio subsystem comprising a duplexing component configured to support at least a first and a second duplexing mode of operation with a serving station;
• and
• a storage device in data communication with the processing device, the storage device comprising computer-executable instructions configured to, when executed by the processing device:
• signal, directly or indirectly, the duplex component resident within the client device to operate in the first duplexing mode;
• and
• substantially in response to a detected trigger event, signals the duplex component to operate in the second duplexing mode;
• wherein the first duplexing mode of operation comprises a dynamic half-duplex frequency division duplexing (FDD) mode of operation, and the second duplexing mode of operation comprises a semi-static half-duplex FDD mode of operation, and
• the trigger event comprises a rising timing advance (TA) value,
• wherein the rising TA value corresponds to a length of time a user equipment (UE) has to advance its timing of uplink (UL) transmission and is sent by an eNodeB to the UE according to a perceived propagation delay of UL transmissions,
• wherein the rising TA value comprises an increased value relative to a previous TA value and is used to compare with a threshold in order to decide whether to change the first duplexing mode to the second duplexing mode.

A method of switching duplex operation in a multiple access wireless network, the wireless network comprising a serving station and a plurality of client devices, the method comprising:

• operating the network in a first duplexing mode;
• detecting a trigger event associate with least one of the plurality of client devices operating in the first duplexing mode;
• determining a second duplexing mode based at least in part on the detecting the trigger event;
• distributing information related to mode change from the first duplexing mode to the second duplexing mode to at least a portion of the plurality of client devices;
• and
• operating the network in the second duplexing mode;
• and
• where the first duplexing mode comprises a full-duplex frequency division duplexing (FDD) mode, the second duplexing mode comprises a half-duplex FDD mode and the trigger event comprises a falling timing advance (TA) value.

A method of switching duplex operation in a multiple access wireless network, the wireless network comprising a plurality of networking devices, the method comprising:

• operating the network in a first duplexing mode;
• detecting a trigger event within at least one of the plurality of networking devices;
• determining a second duplexing mode based at least in part on the detection of the trigger event;
• distributing information about a transition from the first duplexing mode to the second duplexing mode to at least a portion of the plurality of networking devices;
• and
• operating the network in the second duplexing mode;
• wherein:
• the network comprises an uplink physical channel characterized by at least an uplink frequency resource, and a downlink physical channel characterized by at least a downlink frequency resource;
• the first duplexing mode is configured to utilize the entire uplink frequency resource and the entire downlink frequency resource;
• and
• the second duplexing mode is configured to utilize at least a portion of the uplink frequency resource by allocating a plurality of uplink subframes and one or more guard subframe, and at least a portion of the downlink frequency resource by allocating a plurality of downlink subframes and one or more guard subframe;
• where the first duplexing mode comprises a full-duplex frequency division duplexing (FDD) mode, and the second duplexing mode comprises a half-duplex FDD mode;
• and
• the trigger event comprises a falling timing advance (TA) value,
• wherein the falling TA value corresponds to a length of time a user equipment (UE) has to advance its timing of uplink (UL) transmission and is sent by an eNodeB to the UE according to a perceived propagation delay of UL transmissions,
• wherein the falling TA value comprises a decreased value relative to a previous TA value and is used to compare with a threshold in order to decide whether to change the first duplexing mode to the second duplexing mode.