Provided is a digital filter implementing a function by using circular convolution of a digital input signal and a unit pulse response of the digital filter in applying a filter to the digital signal. In addition, a configuration sequence change of an output signal, which occurs as a result of digital filtering according to the present invention, in comparison to an input signal, is corrected by inversely performing circular shifting in a transmitter by amount of the configuration sequence change, or by reconstructing a signal after making synchronization and acquiring the signal previous to a time point of the synchronization by amount of the configuration sequence change, in a receiver.

The present invention relates to a digital broadcasting system for transmitting/receiving a digital broadcasting signal and a method of processing data. In one aspect of the present invention provides a method of processing data, the method including receiving a broadcasting signal in which mobile service data and main service data are multiplexed, demodulating the received broadcasting signal, obtaining an identifier indicating that data frame of the broadcasting signal includes service guide information, decoding and storing the service guide information from the data frame; and outputting a service included in the mobile service data according to the decoded service guide information.

The present invention relates to a digital broadcasting system for transmitting/receiving a digital broadcasting signal and a method of processing data. In one aspect of the present invention provides a method of processing data, the method including receiving a broadcasting signal in which mobile service data and main service data are multiplexed, demodulating the received broadcasting signal, obtaining an identifier indicating that data frame of the broadcasting signal includes service guide information, decoding and storing the service guide information from the data frame; and outputting a service included in the mobile service data according to the decoded service guide information.

A digital filter includes: integration calculation units (10) that are cascade-connected, are fed time-division-multiplexed data, the time-division-multiplexed data being formed of pieces of data on M channels that are time-division multiplexed, the pieces of data on the respective channels being updated at a rate equal to a sampling frequency f.sub.s, operate in accordance with a clock having a frequency f.sub.s×M, and integrate the time-division-multiplexed data for every M samples; a frequency conversion unit (11) that operates in accordance with a clock having a frequency f.sub.D×M, decimates data at the sampling frequency f.sub.s input from the integration calculation unit (10) in the last stage at a sampling frequency f.sub.D, and delays data obtained as a result of decimation by (M−1) samples; and difference calculation units (12) that operate in accordance with the clock having the frequency f.sub.D×M, are cascade-connected to the output of the frequency conversion unit (11), and each subtract, from data input thereto, data M samples before.

A system is provided that includes a control panel having a wireless transceiver that operates under a 6LowPan/IPv6/IoT protocol, wherein the 6LowPan/IPv6/IoT protocol supports one or more of a 6LowPan protocol, an IEEE802.15.4 protocol, and IEEE802.11 coordination, a plurality of remotely located, wireless devices each having a wireless transceiver that exchanges messages with the control panel within a time division multiple access (TDMA) slot on a radio frequency (RF) channel, and a respective processor within the control panel and each of the plurality of wireless devices that controls transmission and reception of messages within TDMA slots of a repeating super frame, wherein at least some of the plurality of wireless devices select TDMA slots of the super frame under a carrier sense multiple access with collision avoidance (CSMA/CA) algorithm/mechanism and some other of the plurality of wireless devices select TDMA slots of the super frame under a WiFi protocol.

A system is provided that includes a control panel having a wireless transceiver that operates under a 6LowPan/IPv6/IoT protocol, wherein the 6LowPan/IPv6/IoT protocol supports one or more of a 6LowPan protocol, an IEEE802.15.4 protocol, and IEEE802.11 coordination, a plurality of remotely located, wireless devices each having a wireless transceiver that exchanges messages with the control panel within a time division multiple access (TDMA) slot on a radio frequency (RF) channel, and a respective processor within the control panel and each of the plurality of wireless devices that controls transmission and reception of messages within TDMA slots of a repeating super frame, wherein at least some of the plurality of wireless devices select TDMA slots of the super frame under a carrier sense multiple access with collision avoidance (CSMA/CA) algorithm/mechanism and some other of the plurality of wireless devices select TDMA slots of the super frame under a WiFi protocol.

A synchronization timing loop detection method includes monitoring an active timing reference for a flapping event at a network element, incrementing a counter for each detected flapping event, determining if the counter exceeds a threshold over a predetermined time period, and, if the counter exceeds the threshold, declaring a possible timing loop on the active timing reference. The flapping event can include the active timing reference being active followed by inactive due to synchronization status messaging and one of a logical and physical timing loop on the active timing reference. A synchronization timing loop detection system and a network element for synchronization timing loop detection for the synchronization timing loop detection method are also disclosed.

A synchronization timing loop detection method includes monitoring an active timing reference for a flapping event at a network element, incrementing a counter for each detected flapping event, determining if the counter exceeds a threshold over a predetermined time period, and, if the counter exceeds the threshold, declaring a possible timing loop on the active timing reference. The flapping event can include the active timing reference being active followed by inactive due to synchronization status messaging and one of a logical and physical timing loop on the active timing reference. A synchronization timing loop detection system and a network element for synchronization timing loop detection for the synchronization timing loop detection method are also disclosed.

The described technology is generally directed towards sharing a radio by multiple subscriber identities at a device. A time division multiplexing pattern at the device radio gives primary radio use to a first subscriber identity, while also providing time windows for radio use to a second subscriber identity. In response to a communication by the second subscriber identity, the time division multiplexing pattern can be changed to give the primary radio use to the second subscriber identity. Also, a radio resource control protocol can designate appropriate states for the different subscriber identities, designating the subscriber identity with primary radio use as connected, while the other subscriber identity is designated as inactive or idle.

The described technology is generally directed towards sharing a radio by multiple subscriber identities at a device. A time division multiplexing pattern at the device radio gives primary radio use to a first subscriber identity, while also providing time windows for radio use to a second subscriber identity. In response to a communication by the second subscriber identity, the time division multiplexing pattern can be changed to give the primary radio use to the second subscriber identity. Also, a radio resource control protocol can designate appropriate states for the different subscriber identities, designating the subscriber identity with primary radio use as connected, while the other subscriber identity is designated as inactive or idle.