Example techniques relate to playback queue subscriptions. An example implementation involves a computing system receiving, from a first computing device associated with a first user account, an instruction to enable subscription to a first playback queue associated with a first media playback system. In response to the instruction, the computing system enables second user accounts to subscribe to the first playback queue. The second user accounts are registered with respective second media playback systems in respective second household. The computing system receives, from a particular second media playback system, a request to subscribe to the first playback queue; and in response, sends one or more messages that update a control interface of the first control device to display a subscriber indication and (ii) sends one or more messages that populate a second playback queue of the particular second media playback system with audio tracks of the first playback queue.

In macro/RRH setups, channel state information reference signals (CSI-RS) and demodulation reference signals (DM-RS) may be used to decouple control and data transmission. Data transmission (e.g. for LTE Rel 10 and beyond) may be based on CSI-RS and DM-RS, while control may be received from a different set of cells or TxPs via CRS. Certain aspects of the present disclosure introduce a reporting framework, in which configuration of data-serving cells/TxPs may be carried out based on CSI-RS. In certain aspects, a new concept of CSI-RS groups, i.e., a set of CSI-RS ports that a UE considers as one group for precoding matrix indicator (PMI)/channel quality indicator (CQI)/rank indicator (RI) reporting, may be defined.

Systems and methods for managing and providing content and services on a network system. Aspects of the invention include location-based determination of network content and services that may be provided to client computers. Other aspects of the invention include authorization and authentication components that determine access rights of client computers. Additional aspects include systems and methods for redirecting client computers to different network content. The disclosed systems and methods may be used in numerous network system applications.

Systems and methods for managing and providing content and services on a network system. Aspects of the invention include location-based determination of network content and services that may be provided to client computers. Other aspects of the invention include authorization and authentication components that determine access rights of client computers. Additional aspects include systems and methods for redirecting client computers to different network content. The disclosed systems and methods may be used in numerous network system applications.

The secure mobile communication relay of the present invention may comprise: a baseband processing unit for the baseband modulation/demodulation of the mobile communication signal transmitted between a terminal and a mobile communication network base station so as to extract baseband data; a control unit for analyzing the baseband data and permitting or rejecting the relay of the baseband data based on the result of a determination of whether or not a set security policy has been violated; a storage unit for storing information for setting the security policy; and a firewall function unit for determining, based on the instructions of the control unit, whether or not the packet data included in the baseband data violates the security policy.

The secure mobile communication relay of the present invention may comprise: a baseband processing unit for the baseband modulation/demodulation of the mobile communication signal transmitted between a terminal and a mobile communication network base station so as to extract baseband data; a control unit for analyzing the baseband data and permitting or rejecting the relay of the baseband data based on the result of a determination of whether or not a set security policy has been violated; a storage unit for storing information for setting the security policy; and a firewall function unit for determining, based on the instructions of the control unit, whether or not the packet data included in the baseband data violates the security policy.

A computer-based method for real-time communication authorization includes receiving, from a first communication device, a communication request, verifying, with a verification engine, a pre-approval status of the communication request, storing the communication request in an approval queue if the communication authorization the pre-approval status is set to false, issuing an alert to the authorization device, and receiving one or more authorization parameters from an authorization device.

Embodiments include methods and systems for improving information security of an input signal. Embodiments include encrypting the input signal, based on concurrently executing a plurality of sequences of transformations of the input signal. Embodiments include, for each sequence of the plurality of sequences: performing a discrete Fourier transform on the input signal; preserving amplitude information of the input signal; and ciphering the input signal based on a unique key that corresponds to the sequence. In embodiments, executing each one of the sequences produces a corresponding encrypted data signal. In embodiments, recreation of the input signal requires each of the encrypted data signals and the corresponding unique key.

Embodiments include methods and systems for improving information security of an input signal. Embodiments include encrypting the input signal, based on concurrently executing a plurality of sequences of transformations of the input signal. Embodiments include, for each sequence of the plurality of sequences: performing a discrete Fourier transform on the input signal; preserving amplitude information of the input signal; and ciphering the input signal based on a unique key that corresponds to the sequence. In embodiments, executing each one of the sequences produces a corresponding encrypted data signal. In embodiments, recreation of the input signal requires each of the encrypted data signals and the corresponding unique key.

Information is efficiently communicated while high secrecy is maintained in a network in which eavesdropping, error, and falsification occur. A control device of a communication network including a plurality of nodes and links each connecting two of the nodes includes a first instruction unit 110 configured to instruct a source node among the plurality of nodes whether to perform MRD encoding when the source node performs transmission, a random number transmission unit 120 configured to transmit a random number in accordance with a maximum number of links susceptible to eavesdropping among the links to the source node in a case in which the source node is instructed to perform MRD encoding by the first instruction unit, and a second instruction unit 130 configured to instruct each of the plurality of nodes whether to perform OTP encryption when the node performs transmission to another node.