Establishing a communication link by selectively powering a transceiver based on a communication request received by another transceiver
First Claim
1. A method of establishing a communication link, the method comprising:
- receiving a communication request from a TDMA cellular network through a TDMA transceiver in a wireless terminal;
receiving from the TDMA cellular network using the TDMA transceiver in the wireless terminal a timing indicator and an offset between the timing indicator and a code for the communication link with a CDMA cellular network;
powering-on a CDMA transceiver in the wireless terminal in response to the communication request received at the TDMA transceiver; and
establishing the communication link from the wireless terminal to the CDMA cellular network through the CDMA transceiver including by operating the CDMA transceiver in the wireless terminal using the timing indicator and the offset to assist the CDMA transceiver'"'"'s establishment of the communication link with the CDMA cellular network.
1 Assignment
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Accused Products
Abstract
A first transceiver in a wireless terminal receives a communication request from a first wireless network. Based on the received communication request, power is selectively provided to a second transceiver in the wireless terminal, and the second transceiver is used to establish a communication link with a second wireless terminal. The first transceiver may be a TDMA transceiver, CDMA transceiver, wireless local area network transceiver, Bluetooth transceiver, or a digital television receiver that receives the communication request from a corresponding type of network, and the second transceiver may be a different one of the receiver types that establishes a communication link with a corresponding type of network. The first transceiver may receive assistance information from the first wireless network. The assistance information may include information that can be used to establish a communication link through the second transceiver with the second wireless network.
34 Citations
8 Claims
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1. A method of establishing a communication link, the method comprising:
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receiving a communication request from a TDMA cellular network through a TDMA transceiver in a wireless terminal; receiving from the TDMA cellular network using the TDMA transceiver in the wireless terminal a timing indicator and an offset between the timing indicator and a code for the communication link with a CDMA cellular network; powering-on a CDMA transceiver in the wireless terminal in response to the communication request received at the TDMA transceiver; and establishing the communication link from the wireless terminal to the CDMA cellular network through the CDMA transceiver including by operating the CDMA transceiver in the wireless terminal using the timing indicator and the offset to assist the CDMA transceiver'"'"'s establishment of the communication link with the CDMA cellular network. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless terminal, comprising:
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a TDMA transceiver that is configured to communicate via a first wireless interface; a CDMA transceiver that is configured to communicate via a second wireless interface; and a processor that is configured to power-on the CDMA transceiver in response to a communication request received by the TDMA transceiver, and is configured to establish a communication link over the second wireless interface using the CDMA transceiver that was powered-on in response to the communication request received by the TDMA transceiver, wherein the received communication request contains a timing indicator and an offset between the timing indicator and a code for the second wireless interface, and the processor is configured to use the received timing indicator and the offset to operate the CDMA transceiver to establish the communication link over the second wireless interface.
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Specification