Übersetzung für "Broadband channel" in Deutsch

To provide the broadband additional channel, several digital-cross connect systems are necessary.

In the present example, there is only a very broadband channel from the center to the subscribers.

Between a switching unit and each subscriber connected thereto, at least one broadband channel is provided over which signals for several telecommunication services, e.g., television signals, stereophonic signals, signals for ISDN services, teleconferencing signals, and videotelephone signals, can be transmitted to the subscriber.

This can be particularly advantageous for multimedia applications which require a synchronous broadband channel and a narrow-band control channel.

Thus, it is especially advantageous to design the first radio channel as a broadband channel that is capable of transmitting the payload contents, thus making it possible to attain a high transmission rate, whereas a narrow-band second radio channel suffices for managing the wireless transmission.

The radio communication ensues, on the one hand, via a broadband channel 71, on the other hand, via a narrow-band signaling channel 70, which is configured at a lower frequency.

Broadband channel 71 is comprised of an alternating sequence of payload slots 72 and signaling data slots 73, it being necessary in the exemplary embodiment selected here to make a further distinction.

As an example, after a certain time of no active participation in a data transmission, mobile units 20, 21, and 22 can lapse into a power-saving mode, in which the transmit and receive functionality is switched off for broadband channel 71 .

Provision can also be made for the mobile units to be called back into the normal mode by a prompting signal sent out by the stationary unit on the narrow-band signaling channel during the power-saving mode, for example, in order to establish a connection or to receive incoming data on the broadband channel.

For example, a request-to-send signal, which had been transmitted in the preceding examples on the broadband channel, could also be transmitted on narrow-band signaling channel 70 .

It is further beneficial, for example, to design the first radio channel as a broadband channel and the second radio-frequency channel as a narrow-band channel, since by this means the broadband is optimally adapted to the data-transmission rates to be expected.

Thus, even in the power-saving mode, mobile units 20, 21, 22, and 23 are able to detect when the transmit and receive functionality has been switched off on the broadband channel, to determine whether it would be advantageous to receive via a different base station, and to initiate a handover via the narrow-band signaling channel.

It is to be considered, however, that time-critical data are advantageously transmitted on the broadband channel. Check-in request and base identification are advantageously transmitted on the narrow-band signaling channel in order to realize a power-saving mode and a simple handover.

Broadband channel 71 is comprised of an alternating arrangement of a payload slot 72 and of a signal-data slot 73 . In the exemplary embodiment selected here, payload slot 72 takes up the very much larger time slot.

The method as claimed in claim 1, wherein the channel is a broadband channel and is arranged in accordance with a TDD or FDD mode of a UMTS mobile radio system.

The method as claimed in claim 1, wherein the random access channel is a broadband channel and is organized on the basis of one of a TDD or FDD mode in a UMTS mobile radio system.

The selected video signal is transmitted from the video server over a broadband additional channel of the digital telephone network, and displayed to the customer on a television set.

This form of spectrum multiplexing results in a modular structural concept in which for a broadband subscriber terminal the transmission over a broadband channel while also using the functional structure already present for a narrow-band subscriber terminal, is enabled in a simple way.

For the broadband channel, whose bit rate is significantly higher than the bit rate of the first hierarchy stage (2Mbit/s), an access control to a signal channel is provided which is used in common in the broadband terminal set and also in the narrow-band terminal set.

In an OFDM multi carrier modulation method, M sub-carriers are used in a frequency band of a broadband mobile radio channel and several symbols are used in a time band. With application of a MIMO multi-antenna method with T transmitting antennae and R receiving antennae, for all sub-carriers and all symbols, a single, pre-determined, channel-matched transmission strategy is used, which is described by a maximum of T*R complex values on the signal side, independent of the species of the MIMO multi-antenna method and independent of the size of the frequency/time bands.

Under the condition of a broadband channel to the server, which is possible, for example, using an XDSL technology via telephone lines, it is possible to supply video and audio signals to a television set which allow display of video in fall screen width as well as video screen contents to be divided into video fields and text regions.

The basic channels of each basic access are transmitted concentrated to the line termination 20 via a first broadband transmission channel 23 .

A number of accesses 25 to 28 are then combined in a third “D-channel bank” 21 to form so-called “central office terminals” and are transmitted via a second broadband transmission channel 33 to a subscriber having a number of network terminations 36 to 37 .