Abstract:
The disclosure is directed to conducting group communications. An embodiment receives information defining a group communication from a first network, detects an availability of at least one local uni-directional radio broadcast network outside the first network, transmits an acknowledgment indicating an intention to connect to the at least one local uni-directional radio broadcast network, and monitors the group communication on the at least one local uni-directional radio broadcast network.
Abstract:
Aspects of managing acknowledgment transmissions from multicast group members of a multicast group within a wireless communications network are disclosed. An access network transmits an announce message announcing a multicast session to a plurality of access terminals. One of the plurality of access terminals (i.e., a first responder) sends a BCMCSFlowRegistration message and an announce acknowledgment (ACK) message to the access network. In an example, the BCMCSFlowRegistration message and announce ACK message are sent within the same access probe on a reverse link access channel. Next, the access network sends, in response to the received BCMCSFlowRegistration message, a suppression message to request access terminals not to send announce acknowledgment messages for the announced multicast session. Alternatively, an application server sends the suppression message in response to the received announce ACK message. In either scenario, the access terminals receiving the suppression message suppress transmission of subsequent announce ACK messages.
Abstract:
In an embodiment, an access terminal sends a multicast session registration request to an access network. The access network determines whether to assign a unicast traffic channel (e.g., media access control (MAC) identifier (ID)) to the access terminal, for the access terminal to provide feedback (e.g., channel quality indicators (CQIs) associated with the multicast session, based on a number of access terminals that have been assigned unicast traffic channels for the multicast session and/or for applications other than the multicast session. The access network configures a traffic channel assignment message to include an identifier for the multicast session, and to further include an assignment of the unicast traffic channel if the determining step determines to assign the unicast traffic channel to the access terminal. The access network sends the traffic channel assignment message to the access terminal including at least the multicast session identifier.
Abstract:
A user equipment (UE) provides a capability-type indication for each of one or more UE capabilities. Each indication corresponds to a capability type, the type being one of a persistent capability or a second-type capability. Information corresponding to the capability-type indication may be provided to an eNB associated with the UE by RRC signaling. The UE provides a capability-change indication for each of one or more UE capabilities that has changed capability type. Information corresponding to the capability-change indication may be provided to an eNB by lower layer signaling, RRC signaling, or a combination thereof. Capability change information may be sent to the eNB autonomously by the UE, or in response to an inquiry from the eNB. The inquiry from the eNB may be triggered by the UE.
Abstract:
Aspects of the disclosure are directed to interference cancellation. A method for performing interference cancellation in a wireless communications device having a transmitter, a receiver, a coefficient controller, an analog interference cancellation (AIC) circuit and a receive local oscillator (LO) includes utilizing a receive local oscillator (LO) to generate a transmit pilot; injecting the transmit pilot into a transmit chain for transmission; utilizing a receiver to receive a signal, wherein the signal includes the transmit pilot and an interference signal; and determining a set of coefficients for the interference cancellation based on an output signal from the receiver.
Abstract:
Aspects of the disclosure are directed to interference cancellation. A method of performing interference cancellation in a wireless device having a receiver, a coefficient controller and an analog interference cancellation (AIC) circuit includes utilizing the receiver to receive a signal; utilizing the coefficient controller to compute a first cost function value using a first set of coefficients, to compute a second set of coefficients using a first coefficient control algorithm, to compute a second cost function value using the second set of coefficients, to compare the second cost function value with the first cost function value, and to determine whether to apply the first set or the second set of coefficients based on the comparison; and utilizing the AIC circuit to apply the first or second set of coefficients to filter a reference signal and the receiver to subtract the filtered reference signal from the received signal for interference cancellation.
Abstract:
A receive (Rx) chain of a wireless local area network (WLAN) transceiver may be used to assist a wireless wide area network (WWAN) transceiver in a user equipment (UE). A UE may use the WLAN Rx chain to autonomously scan and measure while the UE is connected to a first or home wireless network using its WWAN transceiver. When the UE is in a connected state, the WLAN Rx chain may be used to scan and take measurements for one or more second networks operated by a second wireless operator belonging to the same mobile virtual network operator (MVNO) as the first wireless network. In another example, the WLAN Rx chain may perform a set of inter-frequency reference signal time difference (RSTD) measurements based on observed time offsets between positioning reference signals (PRSs) from neighboring cells.
Abstract:
In a user equipment (UE) supporting multiple radio access technologies (RATs) and operating in an multiple-SIM multiple-active (MSMA) scenario, at least a portion of the wireless local area network (WLAN) transceiver may be used opportunistically to support the operation of the wireless wide area network (WWAN) transceiver to support the multiple subscriber identity modules (SIMs). For example, when a first SIM is in an active mode and using the WWAN transceiver for transmit and/or receive operations, at least a portion of the WLAN transceiver may be used in addition to the WWAN transceiver to support the WWAN operation of a second (or third, etc.) SIM. The WLAN transceiver may be used for transmit, receive, or both for the second SIM, while the first SIM continues to use the resources of the WWAN transceiver.
Abstract:
Aspects of the disclosure are directed to interference cancellation. A method of performing interference cancellation in a wireless device having a transmitter and a receiver includes enabling a radio frequency (RF) receive filter for a victim band from a plurality of RF receive filters in a receive path; measuring an RF filter characteristic of the enabled RF receive filter with an auxiliary receiver; configuring a programmable digital filter to match a filter characteristic to the measured RF filter characteristic to yield a reference signal; and providing the reference signal to the receive path for interference cancellation; and, the reference signal is subtracted from a receive signal in the receive path.
Abstract:
Techniques for compensating for self-induced interference in a small cell base station are provided. The techniques include detecting control signals from a neighboring base station associated with a wireless communication network, the control signals being transmitted by the neighboring base station at predetermined intervals, and compensating for self-induced interference caused by a transmitter of the small cell base station transmitting during the predetermined intervals in which control signals are received from the neighboring base station and the transmitter of the small cell base station is transmitting data.