Methods and system for managing uplink buffer at user equipment in tethered call mode

A user equipment (UE), comprising:

• a memory;
• a transceiver;
• and
• at least one processor coupled to the memory and the transceiver, the transceiver configured to:
• receive a synchronization acknowledgment (SYN-ACK) message destined for a device tethered to the UE and transmitted by an application server at a network to which the UE is connected,
• the SYN-ACK message including an application server receiver window size indicating available buffer space in a receive buffer of the application server;
• and
• the at least one processor configured to:
• modify the application server receiver window size in the received SYN-ACK message prior to transmitting the received SYN-ACK message to the device tethered to the UE.

A non-transitory computer-readable medium (CRM) having program code recorded thereon for wireless communication by a user equipment (UE), the program code comprising:

• code for causing the UE to receive a synchronization acknowledgment (SYN-ACK) message destined for a device tethered to the UE and transmitted by an application server at a network to which the UE is connected,
• the SYN-ACK message including an application server receiver window size indicating available buffer space in a receive buffer of the application server;
• and
• code for causing the UE to modify the application server receiver window size in the received SYN-ACK message prior to transmitting the received SYN-ACK message to the device tethered to the UE.

A user equipment (UE), comprising:

• means for receiving a synchronization acknowledgment (SYN-ACK) message destined for a device tethered to the UE and transmitted by an application server at a network to which the UE is connected,
• the SYN-ACK message including an application server receiver window size indicating available buffer space in a receive buffer of the application server;
• and
• means for modifying the application server receiver window size in the received SYN-ACK message prior to transmitting the received SYN-ACK message to the device tethered to the UE.