System and Methods for Enhancing Data Throughput and Page Performance in a Multi-SIM Wireless Communication Device

摘要

Methods and devices for improving data throughput and page performance of a multi-subscription wireless communication device with a shared radio frequency (RF) resource may include detecting when a random access channel (RACH) procedure required on a modem stack associated with the first SIM in order to access a first network will coincide with a scheduled tune-away period for the shared RF resource corresponding to a reservation for activity on a second network supported by the second SIM. When such coincidence is detected, the wireless communication device may periodically transmit preambles to the first network with increasing transmission power until an acknowledgment is received or the scheduled tune-away period starts. When the scheduled tune-away period starts, the wireless communication device may pause transmission of preambles and record virtual preambles. When the tune-away period ends, the wireless communication device may continue the RACH procedure based on actual and virtual preambles.

主权项

1. A method of improving data throughput and page performance of a multi-subscriber identification module (SIM) wireless communication device having at least a first SIM and a second SIM associated with a shared radio frequency (RF) resource, the method comprising:
detecting when a random access channel (RACH) procedure required on a modem stack associated with the first SIM in order to access a first network will coincide with a scheduled tune-away period for the shared RF resource corresponding to a reservation for activity on a second network supported by the second SIM; monitoring for reception of an acknowledgment for the modem stack associated with the first SIM in response to preambles transmitted on a physical RACH (PRACH) to the first network using the shared RF resource; periodically transmitting preambles to the first network with increasing transmission power until an acknowledgment is received or the scheduled tune-away period starts, wherein each preamble is transmitted at a transmission power equal to a sum of a preceding preamble transmission power and a power increment value; and in response to the scheduled tune-away period starting before an acknowledgment is received:
pausing transmission of additional preambles; andrecording virtual preambles for the first network.