MIMOS TETRA DRIVER DOWNLOAD

The preamble of direct mode burst shall be different from the one used for WiMAX. Although the descriptions above contain much specificity, these should not be construed as limiting the scope of the embodiment but as merely providing illustrations of some of the presently preferred embodiments. Synchronization burst uses one preamble, a third preamble. Other configurations are possible. Hence, a base station is not required in direct mode. One direct mode time slot is mapped into one WiMAX frame.

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Consequently, the mobile terminal can be used as a private cordless phone. Other configurations are possible. A TETRA direct mode multiframe consists of 18 direct mode frames, tetraa each of said frames consists of 4 time slots.

Direct mode allows communication to be made when network coverage is not available and allows one of the TETRA terminals to act as relays for a signal. Click for automatic bibliography generation. Frames of broadband signals are arranged as a time slot to form a direct mode multiframe, said multiframe is made up of 18 direct mode frames according to TETRA direct mode specification.

The direct mode multiframe contains WiMAX frames in total. The preamble of direct mode burst shall be different from the one used for WiMAX. The frames of broadband signals are arranged as time slots to form a direct mode multiframe. A SumoBrain Solutions Company.

A separate minos channel may be mapped to each block. WiMAX is suitable for centralized broadband transmission but there exists no active work in implementing direct mode communication between mobile stations. A person skilled in the art should be able to apply the discussion on mapping with any given number of WiMAX frames per direct mode frame, with or without padding frames.

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MIMOS Berhad – National Applied R&D Centre

Within each WiMAX frame assigned to a direct mode time slot, a transparent zone is allocated by the base station so that it will not transmit, to allow for operating direct mode time slot in a WiMAX network. It is used by a transmitting mobile station to ramp and linearize its power amplifier PA.

Different tehra and training sequence are used in synchronized burst to indicate whether one or two logical channels are mapped to the first and mimoss block, in the burst. In the discussion that follows, twelve WiMAX frame per direct mode frame is chosen to achieve 1.

However, a person skilled in the art should be able to allocate the direct mode preamble structure that will not cause false synchronization with normal WiMAX mobile station. Normal burst has the option of using two different tetrra, a first preamble and a second preamble.

A method for enabling a mobile station MS to communicate directly with another mobile station using complete, subset or superset of TETRA-like direct mode features and nimos the same time nimos compatible with a target wireless broadband network air interface, said method comprising the steps of:.

Different preamble is used to indicate if one or two logical channels are mapped to the two blocks, a first block and second block, in the direct mode time slot. It defines the multiframe structure as well.

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The burst formats of these two channels are defined according to frequency correction and synchronization channel burst formats used in the cellular mobile network. The present invention relates generally to network communications, more particularly to digital network communications.

Search Expert Search Quick Search. A method for enabling a mobile station MS to communicate mjmos with another mobile station using complete, subset or superset of TETRA-like direct mode features and at the same time be compatible with a target wireless broadband network air interface, said method comprising the steps of: To emulate the first and second block in normal burst kimos synchronization burst, mimks DL FUSC burst will be logically divided into two blocks.

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The third burst, normal burst, is used to carry traffic data. The first burst is a linearization burst. The logical channels are mapped to the appropriate time slots in the frames within the cyclical frame multiframe structure during a call. A direct mode physical channel comes into existence when a call is active. Part of one specific frame of broadband signals within a duration exactly or close to that of a TETRA direct mode frame is used to emulate a time slot.

The method of claim 1wherein said step tetrz mapping TETRA direct mode multiframe structure is performed by mapping a number of wireless broadband network frames such that the TETRA direct mode multiframe duration of 1.

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It follows that for point FFT there are data subcarriers and for point FFT, there are data subcarriers. Synchronization burst, the second burst, carries control information tetrx receive synchronization information from mobile station.

Six extra WiMAX frames are padded to form a 1. The method of claim 1wherein said step of mapping TETRA direct mode multiframe structure is performed, by mapping a number of wireless broadband network frames such that the TETRA direct mode multiframe duration of 1.

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