Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.

Switch for connecting field apparatuses and device for galvanically isolating at least one apparatus which is connectable to a 2-wire Ethernet bus system includes an uplink and a downlink PHY interface device that each have a transmitting unit and a receiving unit that has two output terminals for providing a received ternary-coded signal as differential signal, includes an uplink and a downlink signal split device that are each connected to the output terminals of an assigned receiving unit and are configured to split a ternary-coded signal provided as differential signal into two binary coded signals, and includes an uplink and a downlink optocoupler device that are each connected to an assigned signal split device and are configured to transfer two received binary-coded signals to a transmitting unit of an assigned PHY interface device.

Power distribution modules are configured to distribute power to a power-consuming component(s), such as a remote antenna unit(s) (RAU(s)). By “hot” connection and/or disconnection, the power distribution modules can be connected and/or disconnected from a power unit and/or a power-consuming component(s) while power is being provided to the power distribution modules. Power is not required to be disabled in the power unit before connection and/or disconnection of power distribution modules. The power distribution modules may be configured to protect against or reduce electrical arcing or electrical contact erosion that may otherwise result from “hot” connection and/or connection of the power distribution modules.

Power distribution modules are configured to distribute power to a power-consuming component(s), such as a remote antenna unit(s) (RAU(s)). By “hot” connection and/or disconnection, the power distribution modules can be connected and/or disconnected from a power unit and/or a power-consuming component(s) while power is being provided to the power distribution modules. Power is not required to be disabled in the power unit before connection and/or disconnection of power distribution modules. The power distribution modules may be configured to protect against or reduce electrical arcing or electrical contact erosion that may otherwise result from “hot” connection and/or connection of the power distribution modules.

A method for processing data in an Ethernet protocol stack is disclosed. The method includes receiving client data for transmission via an Ethernet bus, and selectively transmitting the client data over the Ethernet bus by one of packet switching or non-packet-switching transmission based on an identity of the originating client device.

A multidrop network system includes N network devices. The N network devices includes M transmission-permissible devices including a master device and at least one slave device, wherein M is not greater than N. Each transmission-permissible device has at least one identification code as its identification in the multidrop network system, and the M transmission-permissible devices have at least N identification codes. The M transmission-permissible devices obtain transmission opportunities in turn according to their respective identification codes in each round of data transmission. A K.sup.th device among the M transmission-permissible devices has multiple identification codes, and thus obtains multiple transmission opportunities in one round of data transmission. Each of the M transmission-permissible devices performs a count operation and generates a current count value; and when the current count value is the same as the identification code of a device of the M transmission-permissible devices, this device earns one transmission opportunity.

A multidrop network system includes N network devices. The N network devices includes M transmission-permissible devices including a master device and at least one slave device, wherein M is not greater than N. Each transmission-permissible device has at least one identification code as its identification in the multidrop network system, and the M transmission-permissible devices have at least N identification codes. The M transmission-permissible devices obtain transmission opportunities in turn according to their respective identification codes in each round of data transmission. A K.sup.th device among the M transmission-permissible devices has multiple identification codes, and thus obtains multiple transmission opportunities in one round of data transmission. Each of the M transmission-permissible devices performs a count operation and generates a current count value; and when the current count value is the same as the identification code of a device of the M transmission-permissible devices, this device earns one transmission opportunity.

A method, apparatus and non-transitory computer readable storage medium, in one embodiment, associating at least one wireless device and at least one user, requesting audio information from at least one remote source by the at least one wireless device, receiving the audio information from the remote source, broadcasting an audio identifier to the at least one wireless device, using the audio information, authenticating the association between the at least one wireless device and at least one transport, based on the audio information, determining at least one characteristic of the at least one user based on at least one of at least one user search history and at least one user preference selection and determining at least one probable route of the at least one transport based on the at least one characteristic and at least one of at least one route history and at least one input destination.

Two or more modules communicate over a common control network including receiving by a message packet having data defined by a signal level at defined bit quanta of a bit, the defined bit quanta being less than every bit quanta of a bit, and the communication device samples bit quanta other than the defined bit quanta. The module receives signal disturbances and decodes the signal disturbances as having a value different from an expected value of the certain bit. In another form, the module uses a first counter based on a clock local to the communication device and a second counter having a higher sampling rate than the first counter. Here, the module receives over the control network a synchronizing portion of a message and counts clock ticks of the second counter over a portion of the message to determine a clock rate for a module that transmitted the message.