Method and device for controlling transmission power in system with high data transfer speed

FIELD: communications.

SUBSTANCE: in accordance to method, base station transfers into access terminal along direct traffic channel only when base station has data for sending to access terminal. Each access terminal generates periodic changes of data transfer speed on basis of received signal of direct communication line. Then, each access terminal minimizes period, within which it transfers along check communication line, without controlling power by disabling transmitter on basis of changes of speed of data transfer.

EFFECT: better traffic capacity.

6 cl, 10 dwg

 

The technical field to which the invention relates.

The present invention relates to wireless communication. More specifically, the present invention relates to a new and improved method and apparatus for controlling transmit power on the reverse lines of communication in the wireless communication system.

Prior art

Modern communication systems must support multiple applications (applied problems). One such communication system is a system with multiple access division codes (MDRC), which corresponds to the "Standard for compatibility of the mobile station with the base station TTA/EIA-95A for dual-mode wideband cellular systems with expansion of the range", which is hereinafter referred to as the standard IS-95. System operating in accordance with the standard IS-95, is called here the system IS-95. System MDRC provides for the transfer of speech and data between users of land-line communications. Methods MARK in the communication system with multiple access are disclosed in U.S. patent No. 4901307 "communication System with multiple access and widening of the range using satellite or terrestrial repeaters" (U.S. Patent No. 4,901,307, entitled "SPREAD SPECTRUM MULTIPLE ACCESS COMMUNICATION SYSTEM USING SATELLITE OR TERRESTRIAL REPEATERS," and in U.S. patent No. 5103459 "System and method generate waveforms in cell phone the th system MARK" (U.S. Patent No. 5,103/459, entitled "SYSTEM AND METHOD FOR GENERATING WAVEFORMS IN A CDMA CELLULAR TELEPHONE SYSTEM"), owned by the assignee of the present invention and incorporated herein by reference. Methods of power control in a communication system with multiple access MDRC disclosed in U.S. patent No. 5056109 "Method and apparatus for controlling transmit power in a cellular telephone system MARK", as well as in IS-95, and is known in the technique.

The term "base station" is used to refer to the hardware with which subscriber stations communicate. The term "cell" refers to a geographical coverage area within which the subscriber station can communicate with a particular base station. Therefore, when the subscriber station is located outside the coverage area of base station moves towards the base station, the subscriber station eventually moved to the honeycomb base station". Each base station is typically located near the center of its cell. In a simple configuration, the base station transmits signals using a single carrier frequency for all cells. In order to increase the number (capacity) calls, you can install additional base stations in the same location to provide coverage within the same cell on different carrier frequencies. For further HC is to increase the capacity of the honeycomb can be divided into radial region, resembling pieces of the pie. Thus, the honeycomb can be divided into sectors, with each base station will transmit through directional antennas, which cover only part of the cell. In a more General configuration cell is divided into three areas called sectors, each sector comprises different from the other 120-degree segment honeycomb. Each base station in a cell, divided into sectors, transmitting on the same carrier frequency within one sector or within a single cell, not divided into sectors.

In the system MDRC subscriber station communicates with the data communication network by passing data through a return line connection to the base station. The base station receives the data and can send the data to the data transmission network. Data from the network data is transmitted in a straight line to the same base station in a subscriber station. The straight line corresponds to the transmission from base station to subscriber station, and a return line corresponds to the transmission from the subscriber station to the base station. In systems IS-95 allocate separate frequencies for direct communication line and a return line connection.

In systems IS-95 is used by many different types of communication channels, which include control channels, the channels of the search call and direct channels of traffic. The availability of the resources forward link traffic determines how many calls to different subscriber stations can support each base station. To get the maximum capacity of the connection methods were developed for the control connection, providing a quick release resources channel traffic and preventing operation of the subscriber station as a transmitter in-band interference with the sudden loss of his channel traffic. This sudden termination of the call can occur due to the movement of the subscriber station for the coverage area of a base station or through the tunnel, which causes a loss of signal channel traffic.

The control channel traffic in IS-95 includes two mechanisms, which are referred to here by the procedure of protection from transmission interference and recovery of channel traffic. The procedure of protection from transmission interference determines the conditions under which a subscriber station must stop transmitting the reverse link. This procedure limits the period of time during which the subscriber station transmits a signal return line connection without power control with the base station. The procedure for restoring channel traffic determines the conditions under which a subscriber station upon detection of loss of channel traffic terminates the call. This second procedure allows the base station to re-apply and re-use the b channel traffic with the sudden loss of communication with the subscriber station.

In IS-95 the procedure of protection from transmission interference provides that the subscriber station has stopped transmitting, when it does not take a strong enough signal direct line of communication to ensure good power control the reverse link. If the subscriber station receives a certain number of consecutive erased frames (12 frames), the subscriber turns off its transmitter. The transmitter can be switched on again after the subscriber station receives a certain number of good frames, such as 2 or 3.

In IS-95 repair channel traffic requires that the subscriber station whose transmitter was turned off in accordance with the procedure of protection against the transmission of noise within a certain time control, be sure to announced the loss of your channel traffic. The time control for recovery channel traffic is usually about five seconds. Similarly, if the base station detects that the call with the subscriber station is no longer active, the base station announces the loss of channel traffic.

The above method allows you to restore the resources of the channel traffic after a relatively short (five seconds) time control. One of the reasons that this method is used in the is-95, is that the base station continuously re is my new frames of information in each active subscriber station every 20 milliseconds, enabling the subscriber station to control this continuous flow of direct traffic. This approach is less effective in a system with high data rate (HDR (SPD), in which the base station transmits to the subscriber station only when the base station has data to send.

Sample system WSPD to transmit digital data with a high transmission rate in the wireless communication system, disclosed in application for U.S. patent No. 08/963386, which issued U.S. patent No. 6574211 "Method and apparatus for packet data with a higher transmission rate" (hereinafter application '386), which is representative of the present application and incorporated herein by reference. As described in the application '386, the base station transmits information at a time in one subscriber station, the transmission rate depends on the measurement of attitudes carrier/interference (N/(C/I))accumulated subscriber station. The subscriber station has only one connection with the base station, but this compound can contain multiple channels of traffic. The base station transmits information frames in a particular subscriber station only when a base station has data to send to this subscriber station. Thus, the subscriber station may maintain a connection with baseballstyle through multiple channels of traffic over a long period of time without reception of a data frame from the base station.

In a system using such an approach to the transfer, the procedure of protection from transmission interference cannot rely on the speed of washing, because the subscriber station is able to identify differences between taking Erasure and absence of transmission data frame. In addition, the time control of such system, it is necessary to re-request the resource channel traffic will be less predictable and may significantly exceed five seconds. Therefore, it is extremely necessary means of protection from transmission interference and reduce the time control in the system WSPD.

The invention

The present invention provides a new and improved method and apparatus for wireless systems with high transfer speed (repetition frequency) data, in which data is transmitted in accordance with the requirements of the network packet data. The throughput of wireless systems is improved by controlling the time period during which the access terminal may transmit on the reverse of the communication line in the absence of the need for reliable power control.

In one aspect of the invention, in order to minimize the transmission of noise on the reverse link, each access terminal generates the control's values data rate (USPD (DRC)and controls these generated values RTU. Value the RTU is changed in accordance with the measurement of attitudes carrier/interference (N/(C/I)), made with the access terminal. When the values of N/N, measured at the access terminal, do not satisfy certain criteria, the access terminal generates the value of the USPD zero speed transmission, indicating that the access terminal is not able at all to decode the data of the straight line. Level USPD of zero may indicate that the access terminal is not longer within range of the base station, and therefore no longer is effective capacity management. When the RTU remains at zero for a long period, the access terminal turns off its transmitter in order to avoid uncontrolled transmission of in-band interference. In an exemplary embodiment, the access terminal turns off its transmitter, if the level of the USPD remains constantly at zero speed transmission during the "off"period of approximately 240 milliseconds. The access terminal re-enables its transmitter after transmission rate RTU remains constantly above zero during the period of "on", for example 13,33 or 26,67 milliseconds.

In another aspect of the invention a wireless network communicating with the access terminal by means of compounds containing one or more traffic channels. Each of the one or more traffic channels are allocated from the primary base station, belonging to the wireless network. Wireless network initiates the disconnection of the connection with the access terminal by sending the beginning of the end from the access terminal. The access terminal responds to it by transmitting the disconnection message and then terminates the use of all channels of traffic. If the message about the beginning of the end or the message of separation is lost due to communication errors, the base station and the terminal use the recovery channel traffic to limit the length of time control. Minimizing time control allows you to quickly re-apply and re-use resources trafc channel with the base station.

In an exemplary embodiment, the wireless network controls time control by maintaining a minimum transfer rate of the data frame to each access terminal in the system. For example, if the period of maximum zero traffic flows without the data frame transmission to the access terminal, the wireless network sends an empty data frame to the subscriber station. If the access terminal fails decodes any data frame or an empty data frame according to any one of its channels of traffic within a certain number of periods with a maximum zero traffic, the access terminal indicates the loss of his is soedineniya with the base station and stops the data transmission. If the wireless system does not accept the message of separation after the transmission of the disconnection message, it stops sending data frames and empty data frames to the access terminal. After a certain number of periods with a maximum zero traffic, wireless system again requests (restores) the resources of the traffic channels allocated freed the access terminal.

In the preferred embodiment, each base station of the wireless network instead manages time control by broadcasting a packet configuration of all active access terminals served by the base station. The configuration packet includes information on the allocation of traffic channels, displaying the selected or not each of the traffic channels of the base station to the active access terminal. If the access terminal decodes the configuration package, showing that was released on one of its channels of traffic, the access terminal disconnects the channel traffic and, if necessary, its connection with the wireless network. If the access terminal is unable to successfully decode the at least one configuration message over a period of time control, the access terminal disconnects their channels of traffic and its connection with the wireless network.

Brief description of drawings

is osobennosti, objectives and advantages of the present invention will become clear from the detailed description set forth below with reference to the drawings, in which similar positions indicate identical elements and in which:

1 is a diagram of an exemplary wireless system with high speed data transfer;

figa is an example diagram of States for the processing time of the control in the access terminal;

fig.2b is an example diagram of States for the procedure of protection from transmission interference in the access terminal;

figa - sample processing algorithm of time control in the access terminal;

fig.3b - sample processing algorithm of time control in a wireless network;

figa-4C are examples of sequences of operations of a process for controlling the transmission power;

figa is a block diagram of an exemplary wireless system with high speed data transfer, which includes the base station and the base station controller; and

fig.5b is a block diagram of an example access terminal with high speed data transfer.

A detailed description of the preferred embodiments

1 shows a block diagram of an exemplary variant implementation of a wireless subscriber station 110 with a high data rate (WSPD), hereinafter referred to by the access terminal, when the communication with the wireless network 120 with the high-speed transmission of the data. Terminal 110 access establishes a connection via a wireless network 120 for exchanging packet data through a network 126, the Internet or some other network 126 packet data, for example, a private network such as a corporate network. Examples of packet data include datagrams Internet Protocol (IP (IP)), used for applications such as accessing web pages and retrieving e-mail. Such applications packet data can be performed directly on the terminal 110 access or on a separate computing device that is used in the terminal 110 access as a wireless modem. In an exemplary embodiment, the terminal 110 provides access to the wireless network 120 through the channel 112 of the wireless connection.

Wireless network 120 may consist of one base station controller or base station can include a multitude of separately located wireless base stations and the base station controller, connected together in a network. Each base station has a predetermined number of traffic channels that can be used to exchange data with the access terminals. When assigning one of the channels of traffic to the access terminal, the access terminal is called the active access terminal. At least one channel traffic will oznachaet each active access terminal. Wireless network 120 can be connected to the network 124 packet data using any appropriate type of network connection, such as wireless or wire line T1 or T3, fiber optic connection, or Ethernet (Ethernet). Wireless network 120 may be connected to a number of different type (more than one) packet data. For example, another network 126 can be switched telephone network (PSTN) (the PSTN (PSTN)), connected to the wireless network 120 via a functional block internetworking data services (FMOD (IWF)).

In an exemplary embodiment, the terminal 110 access continuously monitors the transmission from the wireless network 120 in order to estimate the ratio carrier to noise ratio (N/P) channel. Terminal 110 access periodically sends a control signal data rate (RTU) in a wireless network 120, showing the greatest data transmission rate at which the terminal 110 may receive data on the basis of previous measurements of N/P channel 112 wireless. N/a for terminal 110 to access and its associated signal RTU will change as a result of these conditions, depending on the changing position of the terminal 110 access. When the terminal 110 may receive high-speed data transmission, it sends a signal to the RTU, the ima is the overall high value. When the terminal 110 may receive data from a low speed transmission, it sends a signal to the RTU with a low value.

In an exemplary system, a base station in a wireless network 120 uses the full bandwidth of its direct trafc channel for data transmission to the access terminal destination. The base station directly sends data to only one terminal 110 and transmits the data usually at the highest permissible speed transmission, indicated by a signal RTU, received from the access terminal destination. Transmission is encoded so that they can be the only way to properly decode using terminal access destination.

In an exemplary system, the wireless network 120 maintains a queue of data to a straight line for each active terminal 110 access. Whenever the wireless network 120 receives data from the network 124 packet data addressed to the access terminal, it places the data into the appropriate data queue a straight line.

Transmitting a direct communication line is divided into slots (intervals) duration 1,667 milliseconds, which is 600 slot in the second. The base station transmits data to only one access terminal appointment within the slot and transmits the data transfer rate on the basis of information from the RTU received from the access terminal desig the treatment. At any time, the base station selects a new access terminal assignment and sends the whole package coder", which has a predetermined minimum size. In an exemplary embodiment, the minimum packet size of the encoder is 1024 bits. If the minimum package of the encoder cannot be passed with the required transmission rate RTU within the same slot, the base station transmits a packet encoder in the access terminal assignments in multiple consecutive slots. For example, to send 1024 bits with a baud rate of 38.4 kbps, the base station transmits a packet encoder in 16 consecutive slots.

In an exemplary system, the base station transmits a packet encoder in the access terminal only if the data queue a straight line is not free. If the network 124 packet data is not sending data to the access terminal, and the data queue straight line connection for the access terminal is empty, then the base station will not transmit packets to the encoder, the access terminal.

In many popular applications packet data, such as browsing web pages, the information exchange between the network and the network node is a packet. In other words, the demand for bandwidth may experience short peaks, between which the demand for bandwidth is very low. The ve view the pages is a good example of a batch application batch data. The user can access the Internet using a laptop computer connected to the access terminal. When a user downloads a web page, the web browser will require all the possible bandwidth of the network. After the download is complete, that is, when a user reads a web page, the requirement for bandwidth will be reduced to zero. If a user no longer needs the information, he can close the app web browsing or just leave the computer idle.

In an exemplary system, the wireless network 120 controls the length of time during which each active access terminal remains vacant (does not transmit or receive data). After the expiration time of the timer is idle, the wireless network 120 sends a message about the beginning of the end of the straight line in the access terminal, in order to recover the associated resources trafc channel for use by other access terminals that are not free. The access terminal responds by sending the disconnection message to the wireless network 120 and the separation of its connection with the wireless network 120 and channels of traffic associated with the connection. The message about the beginning of the end and the message of separation, like any other message, error-prone links. what if the access terminal does not decode successfully the message about the beginning of the end the access terminal may not know that he was disconnected. Similarly, if the wireless network 120 does not accept successfully decoded the message about the separation, she may not know what related resources traffic channels available for assignment to other access terminals. In order to perform timely recovery and reuse of resources channel traffic despite such a communication error, an exemplary system SPD uses the control procedure of the connection.

An exemplary system SPD differs from IS-95 that sends traffic data to a straight line in the access terminal, only if the associated data queue a straight line is not empty. The potential for extended periods of zero activity of the channel combined with the possibility of message loss on disconnection or the beginning of the end, complicate control procedures in connection system WSPD.

In an exemplary embodiment, the access terminal calculates the signal level RTU for each time slot. The procedure of protection from transmission interference determines that the access terminal shall disable its transmitter after its level RTU will drop to zero speed transmission for a certain duration, for example, 240 milliseconds or 144 time slots. The access terminal again including the AET its transmitter after as its transmission rate RTU remains above zero during a certain period, such as 8 consecutive time slots or 13,33 milliseconds. In an alternative embodiment, this last period is the 16th consecutive time slots or 26,67 milliseconds.

In one embodiment, the discrepancy between the state of the connection are avoided by determining the period with the maximum zero traffic that can be carried out without transferring information to each access terminal. If the data queue is a direct line of communication to the access terminal remains blank so that the period of maximum zero traffic can elapse without sending the data packet to the access terminal, the wireless network 120 sends empty data packet to the access terminal. The control period of at least twice the period with the maximum zero traffic, which allows the access terminal to get rid of (because of communication errors) from a few empty packets of data without immediately end its compounds.

One of the problems of empty transmit data traffic is that essentially can deteriorate the average throughput straight line communication base station WSPD. This is especially true when sending empty data traffic at the access terminal with a low data rate. For example, the forehand is as empty of traffic data in 1024-byte packet encoder with a speed of 38.4 kbps can take 16 sequentially transmitted slots straight line. If there are many such terminals to access, this type of procedure control connection becomes very expensive in terms of bandwidth a straight line.

Moreover, even if the duration of the period with the maximum zero traffic increases, to avoid wasting bandwidth on an empty traffic data, the period control connection becomes long. For example, if the period of maximum zero traffic is set to 15 seconds, then the time control connection may be 60 seconds. This means that if the wireless network 120 does not accept the message about disconnecting from the access terminal, the wireless network 120 will be in standby mode 60 seconds before restoring and re-allocation of related resources channel traffic. "Linking" resource channel traffic over such a long period is extremely undesirable.

In an advantageous embodiment, each base station periodically transmits a configuration packet sent to a broadcast control channel to all its active access terminals. The configuration packet includes information on the allocation of traffic channels, displaying the selected or not each channel traffic to the active access terminal. Active access terminal served by the base station, proveraitaly successfully decoded the packet configuration for to determine the status of the traffic channels allocated to the access terminal. If the state of the channel traffic changes from selected to unselected, the channel traffic was released and it can be reassigned to another access terminal. After the access terminal determines that one of its corresponding channel traffic was released, the access terminal immediately disconnects and stops using this channel traffic. In an exemplary embodiment, the access terminal continues to use the channels of traffic, is still allocated to the access terminal to the other base stations. In another embodiment, the release of any of the traffic channels of the access terminal makes an access terminal to disconnect their connection with all the base stations and the associated traffic channels. In addition, if the access terminal is unable to successfully decode the configuration package within the time interval of the control connection, it immediately disconnects its connection with the wireless network, which includes any associated traffic channels, and stops its transmission.

In an exemplary embodiment, the access terminal maintains a separate timers control for each base station serving the access terminal. When the access terminal is unable to successfully decode the packet configuration is tion of the specific base station, the access terminal divides the channel of the traffic associated with this base station. If the access terminal continues to successfully decode the packet configuration of another base station, and these packages configuration show that another base station is not released channel traffic to the access terminal, the access terminal will continue to use channel traffic to another base station.

In an advantageous embodiment, the configuration package quite often transmitted in a wide broadcast, the time control can be comparable with the time control used in IS-95. For example, where the configuration packet is sent every 400 milliseconds, the access terminal disconnects its connection after a configuration packet is not decoded during the control of 4.8 seconds, or within 12 consecutive lost packets configuration. Specialists will be aware that you can change the timing associated with the transmission of the configuration package containing information about the allocation of traffic channels without deviating from the method described here. Similarly, you can change the time control without deviating from the method described here.

In an exemplary embodiment, information on the allocation of traffic channels in each package configuration is a bit mask having a number of bits equal to the maximum is the resultant number of direct channels of traffic, supported by the base station. Each active access terminal knows which bit in the bitmask corresponds to channel traffic to the access terminal, and ignores the state of the other bits in the bitmask. In an exemplary embodiment, a '1' is used to denote the allocation of traffic channels, and '0' is used to refer to liberation or not the allocation of traffic channels. In an exemplary embodiment, each base station can support a maximum of 28 channels of traffic straight line, and the length of the bitmask is equal to 28 bits. In an alternative embodiment, each base station can support a maximum of 29 channels of traffic straight line, and the length of the bitmask is equal to 29 bits. Professionals it is clear that the number of traffic channels and bits can be different without deviating from the method described here.

After successful decoding of the packet configuration, each active access terminal checks the bits corresponding to direct traffic channels allocated to it. If the bits of the separation of the direct channel traffic show that the trafc channel of the access terminal was released, the access terminal disconnects the channel traffic and, if necessary, all of its connection with the wireless network 120.

At the completion of the connection between the wireless network 120 and the terminology is crimson access one base station within the wireless network 120 first sends a message about the beginning of the end from the access terminal. When you receive notification of the beginning of the end terminal Dasgupta responds by sending the disconnection message through a base station in a wireless network 120. If the message about the beginning of the end or the message of separation is lost when the communication error, the wireless network 120 does not accept the message of separation. The procedure of control connections mainly changes periodically broadcasting service configuration via the base station after sending the message about the beginning of the end and unsuccessful decoding corresponding to the disconnection message. Package configuration for one or all of the base stations serving the access terminal, which should be decoupled change to show the release channels of traffic associated with the access terminal. After a time control of the base station restores the resources of the channel traffic, which subsequently become available for assignment to other access terminals. Data received from the access terminal, which should be disconnected through traffic after the traffic channels have been marked as released in the configuration package, but before the expiration of the control period can be arbitrarily routed through the base station.

On figa depicts an exemplary state diagram for processing BP is like the control terminal 110 of the access (figure 1). During the normal state 202 traffic to the access terminal performs the normal transmission through the return line when the control gear in a straight line from its serving base station. The access terminal continues to monitor the binding time slots to identify syllables must contain a configuration packet with information on the allocation of traffic channels for at least one of their serving base stations.

If the access terminal receives a message about the beginning of the end, or decodes the configuration package, showing the release of one of its channels of traffic, the access terminal moves (220) from the normal state 202 traffic in state 206 separation. In an exemplary embodiment, the message about the beginning of the end accept direct trafc channel or control channel direct lines of communication, and the package configuration to accept as a broadcast control channel of a straight line. Only one of the above events is required for the access terminal to switch 220 in the state 206 separation. For example, the access terminal will disconnect from the channel traffic after decoding package configuration, showing the liberation of his channel traffic, even if he doesn't get the message about the beginning of the end. After the transition to the state 206 separation t is rminal access stops transmission on the return line and decoding forward link traffic.

As mentioned above, an alternative implementation allows the access terminal to remain in the normal state 202 traffic after receiving the package configuration, showing the release of his own, but not all, of the channels of traffic. In this embodiment, the package configuration will cause the access terminal passage 220 in the state 206 separation only if was released last access terminal and channel traffic, while maintaining the traffic channels allocated for the connection.

In an alternative embodiment, never sent a message about the beginning of the end key, and a wireless network is always separates the access terminal using the information on the allocation of traffic channels in the broadcast of configuration messages by means of its base stations. This approach provides an even higher efficiency of bandwidth on a straight line to save slots, which otherwise would have used in sending messages about the beginning of the end in a straight line. One of the drawbacks of this approach is that resources channel traffic associated with lost access terminal, you cannot restore and reassign to another access terminal before the time control.

As mentioned above, the access terminal periodically tries to decode the encoded configuration message in a straight line, while in the normal state 202 traffic. If the access terminal decodes the configuration package to indicate that it channels the traffic is still selected, the access terminal remains in the normal state 202 traffic, as shown by transition 222 state.

If the access terminal is unable to successfully decode the packet configuration in the period when the configuration packet is transmitted via the base station, the access terminal switches 210 in state 204 to the lack of configuration packages. If the access terminal further successfully decodes the subsequent configuration package, it goes 218 again in the normal state 202 traffic.

Each time, when the first access terminal moves to a state 204 to the lack of configuration packages, the access terminal begins to track the length of time during which there is no successful decoding of the configuration package. If this period of time exceeds the time control, the access terminal 216 passes in state 206 separation. Before the expiration of the control time subsequent failure in decoding the configuration package cause the access terminal remains in a state 204 to the lack of configuration packages, as shown by the transition 214 state.

On fig.2b depicts an exemplary state diagram for procedures to protect against the transmission is placed inside the terminal 110 access (figure 1). In an exemplary embodiment, the access terminal remains largely in state 230 transmission, in which the access terminal continuously transmits a signal to one or more serving base stations on the reverse link. In state 230 transmission the access terminal continuously produces a signal RTU via the return line as long as the signal RTU remains at zero speed transmission for a specified period. If the access terminal generates a signal RTU zero speed transmission for a specified number of consecutive time slots, the access terminal turns off its transmitter and switches 240 in state 232 is turned off the transmitter. In state 232 is turned off transmitter access terminal continues to monitor the ratio of N/a direct line of communication and continues to develop measurement RTU for each time slot. If the measured value USPD increases above zero speed transmission within a predetermined number of time slots, for example 8, the access terminal includes its own transmitter and switches 242 again in state 230 transmission. During state 230 transmission and state 232 is turned off the transmitter, any data successfully decoded in a straight line, are routed through the access terminal as normal. However, when the terminology is al access is in a state 232 is turned off the transmitter, the access terminal does not transmit data on the reverse link.

In an exemplary embodiment, if the access terminal remains in a state 232 is turned off the transmitter during a certain period of time, for example, during the time of control or 4.8 seconds, the terminal access 244 passes in state 206 separation described above. Specialists will be clear that a break during the execution of the transition 244 may differ from the time control without deviation from the methods described here.

On figa depicts an exemplary algorithm processing time control in the access terminal. For each new time slot 302 a straight line connection, the access terminal measures the reception on the broadcast control channel direct lines of communication and direct trafc channel assigned to the access terminal. On the basis of produced or not decoding of the straight line, the access terminal processes the separation 314 or continues to process the next time slot straight line.

If the message about the beginning of the end key is decoded during each time slot 304, the access terminal immediately processes the separation 314. If the message about the beginning of the end key is not accepted, then the access terminal 306 determines whether the processed time slot a temporary slot, in accordance with the s which was expected last part of the full package configuration. In an exemplary embodiment, the configuration packet is sent during regular intervals, measured in slots. For example, in a system using time slots of duration 1,667 milliseconds, the configuration packet can be sent every 400 milliseconds, or all 240 time slots. At step 306, the access terminal checks whether or not the transmitted slot straight line temporary slot, which should be accepted in the completed package configuration. If the passed-in slot straight line misses the end of one of these intervals, then the access terminal is no need to look for a successfully decoded the packet configuration, and it can continue processing the next slot.

If the access terminal determines 306 that he should take the full package configuration, the access terminal then checks 308, was successfully decoded the packet configuration. If the configuration packet was not successfully decoded, then the access terminal 310 checks which he had a duration directly after the last successful decoding of the configuration package. If the period between the current time slot and the last successful decoding of the packet configuration was greater than or equal to the time control, the access terminal announces its connection with the lost wireless network and handles razadyne the s 314. If the period between the current time slot and the last successful decoding of the configuration package is less than the time control, the access terminal continues processing the next slot.

When the access terminal determines that the configuration packet was successfully decoded at step 308, it retrieves and checks the information on the allocation of traffic channels contained in the package configuration to determine 312, was released channel traffic that is assigned to the access terminal. If the channel traffic from the access terminal was released, the access terminal processes the separation 314. If the access terminal can still use other channels of traffic, which were not released, then the access terminal random processes separation 314 only for newly separated channel traffic and continues to use the remaining channels of traffic. If the package configuration shows that the trafc channel remains allocated to the access terminal, the access terminal continues processing the next slot.

On fig.3b depicts an exemplary sequence of operations of the algorithm processing time control in a wireless network. After the beginning of 350 separation of the access terminal, the wireless network sends a message 352 about the beginning of the end from the access terminal. At step 354 wireless doorbell is DNA network estimates, accepted or not a message about disconnecting from the access terminal. If the wireless network receives a message about disconnecting from the access terminal, it immediately restores 360 resources trafc channel previously selected is now disconnected the access terminal.

If the wireless network does not accept the message of separation at the stage 354, the wireless network produces a change in the information 356 on the allocation of traffic channels in the configuration packages transmitted by base stations of the wireless network. Information on the allocation of traffic channels is updated to show that they released traffic channels previously allocated to the access terminal, which it was necessary to separate.

In an exemplary embodiment, the access terminal will not send any acknowledgement or response to the decoded configuration package, which will cause separation. The access terminal simply stops the transmission and reception of certain channels of traffic. Therefore, the wireless network may not know when was decoding or decoding or not the access terminal package configuration. Thus, the wireless network may not restore the resources of the channel traffic associated with the access terminal, prior to the end of the period of control.

After changing the information transmitted in the packet 356 configurations and, the base station continues to transmit 358 modified configuration packages during the time of control. After a time control wireless network restores 360 resources trafc channel previously selected is now disconnected the access terminal. After restoring the 360 resource channel fixed traffic channels traffic and their associated resources can be reassigned to step 362.

Although the steps are shown as sequential, send a message 352 about the beginning of the end key and change package 356 configuration can be performed in any order or at approximately the same time. If the modified package configuration and the message about the beginning of the separation obtained in one and the same time, the access terminal transmits a message about disconnecting in response to the message about the beginning of the end key before the response to the received service configuration.

On figa-4C shows the sequence of operations of an exemplary process for controlling the transmission power. First, when the connection between the access terminal and the wireless network includes the transmitter of the access terminal and two timers in the access terminal, which are called "timer off" and "timer" and begin their work in the deactivated state. In the process for each new time slot on the stage 402, the access terminal generates (at step 404) the value of the USPD and uses this value RTU along with two timers, to determine whether to enable or disable its transmitter.

In an exemplary embodiment, the stage of generating the 404 RTU followed by a check to enabled or disabled 406 transmitter terminal 110 access. If the transmitter is enabled, the process continues as depicted at fig.4b, where the access terminal determines whether to turn off the transmitter. If the transmitter is off, the process continues as depicted at figs, where the access terminal determines whether to enable the transmitter.

On fig.4b the process continues from step 406 to assessment at stage 420, the values RTU generated at step 404. If at step 420 the newly generated value USPD more than at zero speed transmission, the access terminal deactivates the "timer off" (step 422). In an exemplary embodiment, deactivate the timer off when it is already deactivated, do not result in changes in the status of the timer switch. In an alternative embodiment, step 422 includes checking the state of the "off timer" and only his deactivate if it was previously activated. After step 422, the process continues at processing stage of the next time slot (402 on figa).

If at step 420 the newly generated value USPD had a value of RTU at zero speed transmission, the terminology is al access evaluates the state of the "timer off" in step 424. If the off timer is active, but its validity has expired at step 424, then the access terminal deactivates your timer at step 430 and turns off its transmitter at step 432. If the timer has not expired at step 424, then the access terminal checks (step 426), was already activated the timer off. If at step 426 timer switch has not been activated, the access terminal activates the off timer at step 428. Step 428 activate the off timer includes a timer setting operation after a certain period off, for example, through 240 milliseconds or 144 of the slot duration to 1.67 milliseconds. The trigger is activated shutdown timer causes the production of a signal to the access terminal, which turns off its transmitter. If at step 426 shutdown timer has already been activated, the process continues at processing stage of the next time slot (402 on figa).

On figs shown that the process continues from step 406 to assessment of 442 values RTU generated at step 404. If at step 442 the newly generated value USPD mattered RTU zero speed transmission, the access terminal deactivates the timer at step 446. In an exemplary embodiment, deactivate the timer, when is he already deactivated, not result in the change of state of the timer. In an alternative embodiment, step 446 includes checking the status of the timer and only his deactivate, if it was previously activated. After step 446, the process continues at processing stage of the next time slot (402 on figa).

If at step 442 the newly generated value USPD was greater than zero speed transmission, the access terminal evaluates the status of the timer at step 444. If the timer is active, but its running time has expired at step 444, the access terminal deactivates your timer at step 452 and includes again your transmitter at step 454. If the operating time of the timer has not expired at step 444, the access terminal checks (step 448), was already activated the timer. If at step 448 the timer has not been activated, the access terminal activates its timer at step 450. Step 450 activate the timer includes a timer setting on the response time after the expiration of a certain period of inclusion. In an exemplary embodiment, switching period is approximately 13,33 milliseconds or 8 slots of duration 1,67 milliseconds. In an alternative embodiment, the period of inclusion composition is employed, approximately 26,67 milliseconds or 16 slot duration 1,67 milliseconds. After a time the trigger is activated, the timer outputs a signal to the access terminal, which includes the transmitter. If at step 448 the timer has already been activated, the process continues at processing stage of the next time slot (402 on figa).

On figa depicts a block diagram depicting the basic subsystems of an exemplary base station 504 with high speed data transmission, and the controller 510 of the base station (KBS (BSC)), made in accordance with one embodiment. ASC 510 and the base station 504 can serve as components of a wireless network such as wireless network 120 (Fig 1). As shown also in figure 1, ASC 510 is connected to the network 124 and 126 packet data via one or more interfaces 524 packet networks. Although only one base station 504 is shown to simplify, the wireless network 120 may include multiple base station 504 and the controller 510 of base stations. ASC 510 coordinates communication between each access terminal (110 figure 1) and the network 124 packet data through the interface 524 packet network. Wireless network 120 may also include functional block internetworking or FMO (IWF) (not shown)located between the selector elements 514 and the public switched telephone network (PSTN) or PSTN (PSTN) (not shown).

ASC 510 with the contains many selector elements 514, although for simplicity only one is shown in figa. Each selector element 514 appointed to manage communication between one access terminal and ASC 510 through one (or more) base station 504. In an exemplary embodiment, the connection between ASC 510 and the access terminal may contain multiple channels of traffic routed through one selector element 514. The access terminal is allocated a maximum of one channel traffic from each of the serving base station 504. Data received from a single terminal access each serving base station 504, route through one selector element 514, assigned to the access terminal.

Interface 524 packet network receives data from the network 126 packet data through the connection 554, checks the destination address of the packet data and routes the data to the selector element 514 associated with the access terminal destination. If no connection has been established between the wireless network 120 and the terminal of the access destination, the CPU 56 controls the call establishes a connection with the access terminal. The connection includes a search call access terminal and the destination selector element 514 and one or more traffic channels to the access terminal. Each channel of the traffic assigned to a connection with one access terminal, bude who belong to different base stations. The base station 504, which establishes communication with the access terminal via the channel traffic is called "serving base station" of the access terminal. The selector element 514 is assigned to the connection of the access terminal, is used for packet data received from the interface 524 packet network, to the serving base station 504 of the access terminal destination.

In an exemplary embodiment, each base station 504 includes a processor 512 control base station, which determines the priority of transmission direct line of communication to all the access terminals served by the base station 504. The processor 512 control base station selects an access terminal, which will be directed transfer straight line during each time slot a straight line.

In an exemplary embodiment, each base station 504 maintains a queue 540 data direct line of communication for each channel traffic that is associated with the active access terminal. Packet data that must be transmitted to the access terminal, stored in the data queue straight line terminal access to until the processor 512 control base station selects the access terminal as a terminal access destination time slot straight line.

In an exemplary is embodiment, the base station 504 includes multiple channel elements 542, where one channel element 542 allocated to each channel traffic. Immediately after selecting the access terminal assignments for time slot direct line of communication with processor 512 control base station to transmit data from the queue 540 data of the straight line through the corresponding channel element 542 in radio frequency (RF) module 544, and then through the antenna 546. The data is then transmitted through a straight line 550 connection to the access terminal.

In an exemplary embodiment, the processor 512 control base station determines the transmission rate for each time slot a straight line. On a return line 552 communication transmitted signals a return line connection, such as information RTU received from each terminal 110 access to the antenna 546. Signals the return line then converted with decreasing frequency and the control gain in the RF module 544 and demodulated and decoded in channel element 542.

In an exemplary embodiment, the processor 512 control base station controls the information RTU adopted from each active access terminal, and uses the information RTU along with the amount of data in each queue 540 data direct line of communication in order to determine the order of transmission in a straight line 550 connection. In an exemplary embodiment, CR is cessor 512 control base station generates a configuration package, which is periodically transmitted in a straight line 550 connection. The configuration packet includes information on the allocation of traffic channels, displaying the selected or not each of the traffic channels of the base station to the active access terminal. The processor 516 call control issues a command to the processor 512 control the base station to the separation of traffic channels assigned to the active terminal 110 access. Each processor 516 call control produces the message about the beginning of the end key, and sends the message to the access terminal that you want to disconnect, through one or more base stations. If the selector element 514, assigned to the access terminal that you want to disconnect, does not accept the message of separation, the processor 516 call control issues a command to the processor 512 control the base station to update the content of the subsequent packets configuration passed to reflect the release of the corresponding channel traffic. The processor 516 call control allows thus to determine the release of traffic channels in one or all of the base stations serving the access terminal that you want to disconnect.

The processor 516 call control and processor 512 control base station implemented using microprocessors, programmable user is elem gate arrays (PPWM (FPGA)), programmable logic devices (PLD (PLD)), digital signal processors (DSPS (DSP)), specific integrated circuits (ICI (ASIC), or other devices that allow you to develop and regulate the required amplitude and phase control signals. In an exemplary embodiment, the relationship between ASC 510 and the base station 504 is performed through the reverse connection. Information passing through the reverse connection includes the connection between the processor 516 call control and processor 512 control base station. Reverse the connection between ASC 510 and the base station 504 is implemented using the appropriate connection hardware, such as underground cable line or microwave T1 or T3, or optical fiber, such as OC3 (OK).

In an exemplary embodiment, the message about the separation, adopted through a return line 552 disconnected from the access terminal, is decoded and sent to the processor 512 control base station that coordinates the recovery and redistribution of resources channel traffic, such as the selector element 514 using the processor 516 call control. In an alternative embodiment, the message about the separation is not decoded by the processor 512 control base station, but is routed through the selector element 514 processor 516 call control. In an alternative embodiment, ASC 510 and the base station 504 are combined, and the functions of the CPU 516 of the call control processor and 512 controls the base station are performed using a single processor or a single set of shared processors.

In an exemplary embodiment, data is transmitted in a straight line 550 communication in the form of "data packets", with a minimum size of 1024 bits. The contents of the data packet is transmitted in one or more time slots having a fixed duration, for example, 1,667 milliseconds.

In an exemplary embodiment, the channel element 542 generates a cyclic redundancy code (CEC (CRC)for control of the pack and then encodes the data packet and its CEC code with direct correction of errors (PIUS (FEC)) to generate an encoded packet. Code PIO can use any of several methods of forward error correction, which include turbomotive, convolutional coding, block coding, or other forms of encoding, including coding with obtaining a soft decision. Channel element 542 then performs interleaving (or reorder) the symbols within the encoded packet. Channel element 542 may use any of a variety of methods alternation, such as block interleaving and beaten the second reverse alternation. Package after interleave encoded using the methods of multiple access division codes (MDRC), which include the character encoding using a Walsh code and pseudocumene (PSH) expanding range using a short PN-I and PN-Q codes. In an alternative embodiment, uses a complex PN expansion of the spectrum. Data spread spectrum served in the RF module 544, which performs quadrature modulation, filtering and signal amplification. Then the direct signal communication line is transmitted over the air via the antenna 546 in a straight line 550 connection.

On fig.5b depicts a block diagram of an exemplary terminal 110 access with high data rate. The terminal 110 transmits the access information, such as information USPD and the reverse packet data communication line, a wireless network 120 through a return line 552 of the wireless channel 112 communication. Terminal 110 access retrieves the data from the wireless network 120, such as data direct lines of communication and configuration packages through a straight line 550 of the wireless channel 112 connection.

In an exemplary embodiment, the signal direct line of communication received through the antenna 560 and sent to the receiver located in the RF path 562. The receiver performs filtering, gain, quadrature demodulation and signal sampling. The digital signal is moved in the demodulator (DEMOD) 564, where there is a narrowing of the spectrum with short code PN-I and PN-Q and disclosure using coding Walsh. The demodulated data are fed into the decoder 566, which performs the inverse functions of the signal processing performed in the base station 504. In particular, the decoder 566 performs deteremine, decoding and validation of the CEC. The decoded packet data is provided in the interface 568 packet data, which then sends the data through the connection 570 to an external device (not shown)having a user interface and executing user application such as a web browser. The decoder 566 issues in the controller 576 decoded information of the call control, such as configuration packages and messages about the beginning of the end.

The data are from an external device (not shown) via connection 570 and interface 568 packet data. Data can be routed through the controller 576, or packet data can be fed directly into the encoder 572.

The controller 576 controls the properties of the signal received from the serving base station 504, and outputs information USPD. The controller 576 delivers the resulting information USPD in the encoder 572 for further transmission through a return line 552 connection. The controller 576 also handles received messages about the beginning of the separation and produces with testwuide the disconnection message, want to transfer. The controller 576 evaluates the contents of each decoded packet configuration in order to determine whether there was released some of the channels of traffic to the access terminal. As described above, the controller 576 controls developed levels RTU in order to avoid, to the terminal 110 of access was not a station in-band interference for your wireless network. In an exemplary embodiment, the controller 576 causes the disabling of the transmitter in the RF path 562, if the level of the USPD drops to zero speed transmission for a certain duration, for example, 240 milliseconds or 144 time slots. The controller 576 re-enables the transmitter in the RF path 562 after the speed RTU remains above zero during a certain period, such as 8 consecutive time slots.

In an exemplary embodiment, the interface 568 packet data includes a data buffer for temporary storage of data and return pipe connection. When the transmitter in the RF path 562 is turned off, the data return line are stored in the buffers until then, until again will not turn on the transmitter. In an alternative embodiment, the data is sent to the transmitter even when the transmitter is turned off, which leads to their loss. An alternative implementation avoids overflow b the Fera data return line connection.

If the controller 576 receives a message about the beginning of the end key, the controller 576 produces the message about the separation, which will be transmitted through the encoder 572, modulator 574, RF path 562 and the antenna 560. After the transmission of the disconnection message, the controller 576 disconnects its connection with the wireless network and all the associated traffic channels.

If the controller 576 receives the configuration packet, which indicates that one of the traffic channels of the access terminal was released, the controller 576 immediately separates this channel traffic. In an exemplary embodiment, if only one of the many traffic channels assigned to the access terminal, was released, the access terminal continues to arbitrarily use the remaining channels of communication traffic. In an alternative embodiment, the release of any of the traffic channels of the access terminal causes the separation of the access terminal with all your connections with ASC and all base stations.

In addition, the controller 576 controls the intervals between the reception of successfully decoded packets configuration. If the controller 576 determines that the configuration packet was not successfully decoded during the period, greater than or equal to the time control, the controller 576 disconnects its connection with ASC and all base stations. In an exemplary variations is the implementation of the controller 576 implemented using microprocessors, user-programmable gate arrays (PPWM (FPGA)), programmable logic devices (PLD (PLD)), digital signal processors (DSPS (DSP)), specific integrated circuits (ICI (ASIC), or other devices that allow you to perform controller functions described herein.

In an exemplary embodiment, the data return line from the interface 568 packet data, and a controller 576 encoded in the encoder 572. Encoder 572 generates a cyclic redundancy code (CEC) to control each package and then encodes the data packet and the CEC code with direct error correction (IEP) in order to form a coded packet. Code IEP allows you to use any of several methods of forward error correction, which include turbomotive, convolutional coding, block coding, or other forms of encoding, including coding with obtaining a soft decision. Then, the modulator (MOD) 574 produces the alternation (or rearrange) the symbols within the encoded packet using any of a variety of methods alternation, such as block interleaving and bit-wise reverse alternation. Package after its alternation encode using the methods of multiple access division codes (MDRC), which include the encoding symbol is in using a Walsh code and pseudocumene (PSH) expanding range using a short PN-I and PN-Q codes. In an alternative embodiment uses a complex PN expansion of the spectrum. Data spread spectrum served in the transmitter in the RF path 562, which performs quadrature modulation, filtering and signal amplification. Then the direct signal communication line is transmitted through the air via the antenna 560 through a return line 552 connection.

Alternative implementation applicable to another hardware architecture that can support the transmission with variable speed. For example, an alternative implementation is used in a system using fiber-optic channels, where the channel 112 of the wireless connection 112 in figure 1 is replaced by a fiber optic communication channel, and a straight line 550 connection and return line 552 communication figa-5b exists within the optical fiber. Antenna 560 and 546 on figa-5b are replaced with the device connecting optical fibers.

Although this provides a description in terms of the control connection in a straight line, reference implementation can be easily extended to control communications on the reverse link. Moreover, in the exemplary embodiment, using the methods of multiple access division codes (MDRC), but can be easily extended using various multiple access methods, such as multiple access is divided by time (MDRV (TDMA)).

The previous description of the preferred embodiments are presented in order to any person could make or use the present invention. Various modifications to these embodiments will be clear to the experts, and the General principles defined herein can be used in other variants of implementation without the use of inventive ability. Thus, the present invention does not limit options for implementation shown here, but corresponds to the wide scale that is compatible with the principles and new features disclosed here.

1. The method of controlling the transmit power in a wireless communication system, comprising stages, according to which measure the ratio of carrier/interference of a received signal, to produce one or more values of the control data rate (RTU) based on the measured relationship of carrier to noise ratio, the value of the USPD zero speed is generated if the measured ratio carrier to noise ratio does not correspond to a specific value, and turn off the transmitter on the basis of one or more values RTU to control the transmit power of the transmitter.

2. The method according to claim 1, in which step off the transmitter also contains stages, which determine the length of time during which no one in the operating values of the RTU does not exceed zero speed transmission, and turn off the transmitter when the time period is greater than or equal to a predetermined period.

3. The method according to claim 2, in which a pre-determined period of approximately 240 milliseconds.

4. The method according to claim 1, which also contains the steps that define the second period of time during which none of the developed values RTU does not indicate zero speed transmission, and the transmitter when the second time period is greater than or equal to the second predetermined period.

5. The method according to claim 4, in which the second pre-determined period of approximately 13 and one third of a millisecond.

6. The method according to claim 4, in which the second pre-determined period of approximately 26 and two-thirds of milliseconds.

7. The device is a wireless access terminal, containing a transmitter for transmitting the transmission signal to the power level, the demodulator for demodulation converted to a lower frequency signal and measurement of the ratio carrier to noise ratio converted to a lower frequency signal, and a control processor for evaluating the measured relationship of carrier/interference, generating one or more values of the control data rate (RTU) based on the measured relationship of carrier to noise ratio, the value of the USPD zero speed is produced, if erenee the ratio of carrier/interference does not correspond to a particular value, and install a power level approximately equal to zero, on the basis of one or more values RTU.

8. The device according to claim 7, in which the control processor is also configured to determine the length of time during which none of the developed values RTU does not exceed the zero rate, and setting the power level of the transmission is equal to zero, on the basis of when the time period is greater than or equal to a predetermined period of off transmitter.

9. The device according to claim 8, in which the control processor is configured to use the period when the transmitter is switched off approximately 240 milliseconds.

10. The device according to claim 7, in which the control processor is also configured to determine a second time interval during which none of the developed values RTU does not indicate zero speed transmission, and establishing power level equal to a value which differs from approximately zero value, when the second period of time greater than or equal to a predetermined period included transmitter.

11. The device according to claim 10, in which the control processor is also configured to use the period when the transmitter is enabled, approximately equal to 13 and one third of a millisecond.

12. Device is istwo of claim 10, in which the control processor is also configured to use the period when the transmitter is enabled, approximately equal to 26 and two-thirds of milliseconds.

13. The device is a wireless access terminal that contains a tool for measuring the relationship of carrier/interference of a received signal and means for generating one or more values of the control data rate (RTU) based on the measured relationship of carrier to noise ratio, the value of the USPD zero speed is generated if the measured ratio carrier to noise ratio does not correspond to a specific value, and the transmitter is switched off on the basis of one or more values RTU.

14. The device according to item 13, which also includes a tool for measuring the relationship of carrier/interference of a received signal.

15. The device 14 also includes a means for determining the length of time during which none of the developed values RTU does not exceed the zero rate, and means to turn off the transmitter when the time period is greater than or equal to a predetermined period.

16. The method of controlling the transmit power in a wireless communication system, comprising stages of: measuring at least one first ratio of carrier/interference of a received signal; generate a first measurement value for each of the above, m is Nisha least one of the first relationships carrier/interference for forming at least one first measurement value; transmit such at least one first measurement value; measuring a second ratio of carrier/interference of a received signal; producing a second measurement value for the second carrier relations/interference and switch off the transmitter based on the at least one first measurement and the second measurement value.

17. The method according to clause 16, in which each of the said at least one first measurement value is the value of the control data rate (USPD) and in which the aforementioned second measurement value is the value of the USPD.

18. The method according to 17, in which the said step of turning off the transmitter contains steps: first determine the length of time during which none of the at least one first measurement value has not exceeded the first predetermined value, and switch off the transmitter when the first time period is greater than or equal to the first predetermined period.

19. The method according to p, in which the first pre-determined period of approximately 240 milliseconds.

20. The method according to p, which also contains stages, in accordance with which the measure until the transmitter is turned off at least one subsequent attitude are the th/interference of a received signal; develop further the dimension value for each of the said at least one subsequent relations carrier/interference for forming at least one subsequent measurement; determine a second period of time during which each of the at least one subsequent measurement has exceeded a second predetermined value; and include the transmitter, when the second time period is greater than or equal to the second predetermined period.

21. The method according to claim 20, in which the second pre-determined period of approximately 13 and one third of a millisecond.

22. The method according to claim 20, in which the second pre-determined period of approximately 26 and two-thirds of milliseconds.

23. The method according to claim 20, in which the first predetermined value is equal to the second predetermined value.

24. The method according to claim 20, in which the first predetermined value is zero and the second predetermined value is zero.

25. The method according to p, which also includes the time that is measured while the transmitter is off, at least one further respect to the carrier/interference of a received signal, each of the at least one subsequent relations carrier/interference corresponds to the time slot; develop further value measurement the Oia for each of these, at least one subsequent relations carrier/interference for forming at least one subsequent measurement; includes transmitter, when each of the at least one subsequent measurement value corresponding to a predetermined number of consecutive time slots exceeds the second predetermined value.

26. The method according A.25, in which a predetermined number is eight.

27. The method according A.25, in which a predetermined number is sixteen.

28. The method according to clause 16, which also includes the time that is measured while the transmitter is off, at least one further respect to the carrier/interference of a received signal, each of the at least one of the following relationships carrier/interference corresponds to the time slot; develop further the dimension value for each of the said at least one subsequent relations carrier/interference for forming at least one subsequent measurement, the transmitter, when each of the at least one subsequent measurement value corresponding to a predetermined number of consecutive time slots exceeds the second predetermined value.

29. The method according to p, in which in advance particularly what number is eight.

30. The method according to p, in which a predetermined number is sixteen.

31. The device is a wireless access terminal, containing a transmitter for amplifying and transmitting the control signal to the power level, the demodulator for demodulation converted to a lower frequency signal and measurement signal is converted to a lower frequency signal, and a control processor for generating measurement values based on the characteristics of the signal and install a power level approximately equal to zero, on the basis of the measurement values, and the transmitted control signal includes a value measurements.

32. The device according to p, in which the said demodulator additionally made with the possibility of measuring attitudes carrier/interference and in which the characteristics of the signal include measurement of the ratio carrier to noise ratio.

33. The device according to p, in which the said control processor is additionally configured to determine the length of time during which none of the measured values did not exceed a predetermined value, and setting the power level of the transmission is equal to zero, on the basis of when the time period is greater than or equal to a predetermined period during which the transmitter off the Yong.

34. The device according to p, in which the said control processor is arranged to use the period during which the transmitter is switched off approximately 240 milliseconds.

35. The device according to p, in which the said control processor is additionally configured to determine the length of time during which all of the generated dimension values exceeded a predetermined value, and setting the power level equal to a value other than approximately zero, when the time period is greater than or equal to a predetermined period during which the transmitter is enabled.

36. The device according to p, in which the said control processor is additionally configured to use the period during which the transmitter is enabled, approximately equal to 13 and one third of a millisecond.

37. The device according to p, in which the said control processor is additionally configured to use the period during which the transmitter is enabled, approximately equal to 26 and two-thirds of milliseconds.

38. The device according to p, in which the said control processor is additionally configured to determine the next number of time slots during which all of the generated values of the measure is exceeded a predetermined value, and install a power level equal to a value other than approximately zero when the number of time slots is greater than or equal to a predetermined number of time slots.

39. The method according to 38, in which the said control processor is additionally configured to use a predetermined number of time slots equal to eight.

40. The method according to 38, in which the said control processor is additionally configured to use a predetermined number of time slots equal to sixteen.

41. The device is a wireless access terminal, containing the means for measuring at least one of the first relationships of carrier/interference of a received signal; means for generating a first measurement value for each of the at least one first relationship carrier/interference for forming at least one first measurement value; a means to transfer at least one first measurement value; means for measuring a second relationship of carrier/interference of a received signal; means for generating a second measurement value for the second carrier relations/interference and means for disabling the transmitter on the basis of, at least one first measurement value and the second value of the measuring range is od.

42. The device according to paragraph 41, which also contains a tool to measure until the transmitter is turned off at least one subsequent relations of carrier/interference of a received signal; means for generating subsequent values of the measurements for each of the said at least one subsequent relations carrier/interference for forming at least one subsequent measurement; means for determining a second period of time during which each of the at least one subsequent measurement has exceeded a second predetermined value; means to activate the transmitter when the second time period is greater than or equal the second predetermined period.



 

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9 cl, 27 dwg

FIELD: radio engineering; construction of radio communication, radio navigation, and control systems using broadband signals.

SUBSTANCE: proposed device depends for its operation on comparison of read-out signal with two thresholds, probability of exceeding these thresholds being enhanced during search interval with the result that search is continued. This broadband signal search device has linear part 1, matched filter 2, clock generator 19, channel selection control unit 13, inverter 12, fourth adder 15, two detectors 8, 17, two threshold comparison units 9, 18, NOT gates 16, as well as AND gate 14. Matched filter has pre-filter 3, delay line 4, n attenuators, n phase shifters, and three adders 7, 10, 11.

EFFECT: enhanced noise immunity under structural noise impact.

1 cl, 3 dwg

FIELD: radio engineering for radio communications and radar systems.

SUBSTANCE: proposed automatically tunable band filter has series-connected limiting amplifier 1, tunable band filter 2 in the form of first series-tuned circuit with capacitor whose value varies depending on voltage applied to control input, first buffer amplifier 3, parametric correcting unit 4 in the form of second series-tuned circuit incorporating variable capacitor, second buffer amplifier 5, first differential unit 6, first amplitude detector 7, first integrating device 9, and subtraction unit 9. Inverting input of subtraction unit 9 is connected to reference-voltage generator 10 and output, to control input of variable capacitors 2 and 4. Automatically tunable band filter also has series-connected second amplitude detector 11, second integrating unit 12, and threshold unit 13. Synchronous operation of this filter during reception and processing of finite-length radio pulses is ensured by synchronizer 14 whose output is connected to units 10, 8, and 12. This automatically tunable band filter also has second differential unit whose input is connected to output of buffer amplifier 3 and output, to second control input of variable capacitor of band filter 2.

EFFECT: enhanced noise immunity due to maintaining device characteristics within wide frequency range.

1 cl, 1 dwg

FIELD: radio communications engineering; mobile ground- and satellite-based communication systems.

SUBSTANCE: proposed modulator that incorporates provision for operation in single-channel mode with selected frequency modulation index m = 0.5 or m = 1.5, or in dual-channel mode at minimal frequency shift and without open-phase fault has phase-shifting voltage analyzer 1, continuous periodic signal train and clock train shaping unit 2, control voltage shaping unit 3 for switch unit 3, switch unit 3, switch unit 4, two amplitude-phase modulators 5, 6, phase shifter 7, carrier oscillator 8, and adder 9.

EFFECT: enlarged functional capabilities.

1 cl, 15 dwg

FIELD: electronic engineering.

SUBSTANCE: device has data processing circuit, transmitter, commutation unit, endec, receiver, computation unit, and control unit.

EFFECT: high reliability in transmitting data via radio channel.

4 dwg

FIELD: electronic engineering.

SUBSTANCE: method involves building unipolar pulses on each current modulating continuous information signal reading of or on each pulse or some continuous pulse sequence of modulating continuous information code group. The number of pulses, their duration, amplitude and time relations are selected from permissible approximation error of given spectral value and formed sequence parameters are modulated.

EFFECT: reduced inetrsymbol interference; high data transmission speed.

16 cl, 8 dwg

FIELD: communication system transceivers.

SUBSTANCE: transceiver 80 has digital circuit 86 for converting modulating signals into intermediate-frequency ones. Signal source 114 transmits first periodic reference signal 112 at first frequency. Direct digital synthesizer 84 receives second periodic signal 102 at second frequency from first periodic reference signal. Converter circuit affording frequency increase in digital form functions to convert and raise frequency of modulating signals into intermediate-frequency digital signals using second periodic signal 102. Digital-to-analog converter 82 converts intermediate-frequency digital signals into intermediate-frequency analog signals using first periodic reference signal 112.

EFFECT: reduced power requirement at low noise characteristics.

45 cl, 3 dwg

FIELD: radio engineering; portable composite phase-keyed signal receivers.

SUBSTANCE: proposed receiver has multiplier 4, band filter 6, demodulator 8, weighting coefficient unit 5, adding unit 7, analyzing and control unit 10, synchronizing unit 3, n pseudorandom sequence generators 21 through 2n, decoder 1, and switch unit 9. Receiver also has narrow-band noise suppression unit made in the form of transversal filter. Novelty is that this unit is transferred to correlator reference signal channel, reference signal being stationary periodic signal acting in absence of noise and having unmodulated harmonic components that can be rejected by filters of simpler design than those used for rejecting frequency band of input signal and noise mixture. Group of synchronized pseudorandom sequence generators used instead of delay line does not need in-service tuning.

EFFECT: facilitated realization of narrow-band noise suppression unit; simplified design of rejection filters.

1 cl, 8 dwg

FIELD: mobile radio communication systems.

SUBSTANCE: proposed method and device are intended to control transmission power levels for plurality of various data streams transferred from at least one base station to mobile one in mobile radio communication system. First and second data streams are transmitted from base station and received by mobile station. Power-control instruction stream is generated in mobile station in compliance with first or second data stream received. Power control signal is shaped in mobile station from first power control instruction stream and transferred to base station. Received power control instruction stream is produced from power control signal received by base station; power transmission levels of first and second data streams coming from base station are controlled in compliance with power control instruction stream received. In this way control is effected of transmission power levels of first data stream transferred from each base station out of first active set to mobile station and of transmission power levels of second data stream which is transferred from each base station out of second active set to mobile station.

EFFECT: enlarged functional capabilities.

80 cl, 21 dwg

FIELD: radio engineering.

SUBSTANCE: proposed method and device designed for fast synchronization of signal in wade-band code-division multiple access (WCDMA) system involve use of accumulations of variable-length samples, testing of decoder estimates for reliability, and concurrent decoding of plurality of sync signals in PERCH channel. Receiver accumulates samples required for reliable estimation of time interval synchronization. As long as time interval synchronization estimates have not passed reliability tests, samples are accumulated for frame synchronization estimates. As long as frame synchronization estimates have not passed reliability tests, samples are analyzed to determine channel pilot signal shift.

EFFECT: reduced time for pulling into synchronism.

13 cl, 9 dwg

FIELD: satellite navigation systems and may be used at construction of imitators of signals of satellite navigational system GLONASS and pseudo-satellites.

SUBSTANCE: for this purpose two oscillators of a lettered frequency and of a fixed frequency are used. Mode includes successive fulfillment of the following operations - generation of a stabilized lettered frequency, its multiplication with an oscillator's fixed frequency and filtration of lateral multipliers with means of filters of L1 and L2 ranges and corresponding option of a fixed and a lettered frequencies.

EFFECT: reduces phase noise and ensures synthesizing of lettered frequencies of L1 and L2 ranges of satellite navigational system from one supporting generator at minimum number of analogous super high frequency units.

3 cl, 1 dwg

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