DUAL SIM DUAL ACTIVE SUBSCRIBER IDENTIFICATION MODULE WITH A SINGLE TRANSMIT CHAIN AND DUAL OR SINGLE RECEIVE CHAIN

摘要

A method, an apparatus, and a computer program product are provided. The apparatus may be configured to establish a first call for a first subscription, and accept a second call for a second subscription while maintaining the first call. A single RF transmit chain may be scheduled for uplink transmissions associated with the first call and uplink transmissions associated with the second call. A timesharing schedule for the transmit chain may determine timing for the uplink transmissions associated with the first call is transmitted and when the uplink transmissions associated with the second call is transmitted on the transmit chain. Downlink transmissions associated with the first and second calls may be received using different receive chain. Downlink transmissions associated with the first and second calls may be received using the same receive chain.

主权项

1. A method of managing multiple connections for an access terminal, comprising:
establishing a first call at the access terminal for a first subscription associated with the access terminal; accepting a second call at the access terminal for a second subscription associated with the access terminal while maintaining the first call in an active state; at the access terminal, establishing a transmit timesharing schedule for a single radio frequency (RF) transmit chain of the access terminal, wherein the transmit timesharing schedule determines timing of access to the single RF transmit chain for uplink transmissions associated with the first call and uplink transmissions associated with the second call when the access terminal is operating in a first mode; and controlling access to the single RF transmit chain in accordance with the transmit timesharing schedule.