LG CDMA WLL DRIVER DOWNLOAD

As shown therein, the apparatus includes a transmission data buffer for temporarily storing therein data from DPU 28 , a microprocessor for controlling the gain of the PA 25 – 2 in accordance with the state of the transmission data buffer , and a reception data buffer for temporarily storing therein data from the decoder The method of claim 15, wherein at least one of the subscriber radio interface unit and the base station is a code division multiple access device. The down-converted signal is demodulated by the demodulator 33 and decoded by the decoder In case of data transmission steps from a subscriber’s side, the data transmitted from the data purpose terminal through the DPU 28 is stored in the transmission data buffer , synchronized to an 8-bit time slot pulse and applied to the encoder Instead, the data communication will now be described in detail. Wireless local loop system using CDMA method.

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The embodiment of the present invention as shown in FIGS.

As described above, the WLL system according to the present invention permits a plurality of subscribers to share in common the preset data exclusive channel so as to effectively employ limited frequency when transmitting data communication while interrupting power transmission when there is no data for transmission, thereby decreasing power consumption and improving system efficiency.

As shown therein, the apparatus includes a transmission data buffer for temporarily storing therein data from DPU 28a microprocessor for controlling the gain of the PA 25 – 2 in accordance with the state of the transmission data bufferand a reception data buffer for temporarily storing therein data from the decoder In case of data transmission steps from a subscriber’s side, the data transmitted from the data purpose terminal through the DPU 28 is stored in the transmission data buffersynchronized to an 8-bit time slot pulse and applied to the encoder The reason why the subscribers capacity is assumed to be ten times as large as the channel number is that voice communication subscribers generally terminate the communication within 3 minutes according to local statistics in South Korea.

The method of claim 15, wherein at least one of the subscriber radio interface unit and the base station is configured to perform both voice service and data service. The system of claim 9, wherein the received data is a packet data including a subscriber’s ID.

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Wireless local loop system using CDMA method – LG Information & Communications, Ltd.

When all the channels are in use, a busy tone is generated and transmitted to the terminal in step S 3 and when there are unoccupied channels, one of the unoccupied channels is assigned in step S 4. The signal applied to the RF transmitter 25 is initially converted to a high frequency signal by the up converter 25 – 1amplified to a predetermined power level demanded through the PA 25 – 2filtered through the BPF 25 – 3 and transmitted via the duplexer 21 through an antenna into a free space.

Until the data terminal connection is terminated, the steps from S 11 to S 15 are repeated for implementation of the data transmission.

United States Patent wwll The apparatus of claim 19, wherein at least one of the subscriber radio interface unit and cdmz station is a code wlo multiple access device. The apparatus of claim 19, wherein at least one of the subscriber radio interface unit and the base station is configured to perform both voice service and data service.

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The system of claim 5, wherein the received data is a packet data including a subscriber’s ID. Communicating signaling information in a cellular system that has a tight frequency reuse pattern.

First, as shown in FIG.

The signal received in the free space via the antenna is applied through the duplexer 31 to the RF llg 32 and the RF receiver 32 filters the signal received through the duplexer 31 and amplifies to LNA so as to down-convert the amplified signal to a low band signal. The applied signal is converted to a high frequency signal by the up converter 25 – 1 and amplified to a predetermined power level demanded through the PA 25 – 2 and it is also filtered through the BPF 25 – 2 and og into a free space.

service manual of LG CDMA WLL Model – LSI

Also, the RF transmitter 25 includes an up converter 25 – 1 for gl the signal from the modulator 26 into a high frequency signal, a PA Power Amplifier 25 – 2 for amplifying the frequency-converted signal to a predetermined level, and a BPF 25 – 3 for filtering the amplified signal.

Wireless local loop system using CDMA method.

Cyclic code phase multiple access for inbound satellite communications. Meanwhile, when it is determined that there is data for transmission, the data is encoded in step S 13 and the encoded data ,g modulated to a preset data purpose channel code in step S 14thereby transmitting the data in an appropriate power level in step S The base station receives the data from a subscriber’s side in the same process as the above and implements the radio communication, and their steps will now be described.

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Then, the ,g signal passes through the PSTN and the data signal passes through the PSPDN, thereby enabling the subscriber to perform data communication with another subscriber or internet network. Those steps are similarly carried out when transmitting data from a base station to a subscriber.

The system of claim 3, wherein the packet data comprises a subscriber’s ID. An apparatus configured to: CDMA mobile station wireless transmission power management with adaptive scheduling priorities based on battery power level.

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The WLL system permits a plurality of subscribers to share in common the preset data exclusive channel so as to effectively employ limited frequency when transmitting data communication while interrupting power transmission when there is no data for transmission, thereby decreasing power consumption and improving system efficiency.

When the terminal is connected, the microprocessor monitors the transmission data buffer in step S 11 so as to determine whether there is data for transmission. Wireless portable telephone having antenna retraction detection means. The system of claim 1, wherein the VIU comprises a modulator for modulating a voice signal from the voice purpose terminal to a PCM signal.

Here, the subscribers include telephone subscribers using voice communication, fix subscribers, and data communication subscribers interfaced to personal computers and work stations for internet or data communication.

Then, in step S 5 the terminal serves to transmit voice or data through the assigned channel, wherein the assigned channel remains seized until the voice or data communication is terminated, that is, until the hook on signal is sensed. As described therein, the data purpose channel ch.