Device and method for managing connectivity for communication systems, multiple access, code-division multiplexing

 

(57) Abstract:

The invention relates to communication systems, multiple access, code-division multiplexing, and more particularly to a device and method for controlling a communication mode with the selected time intervals. The technical result - the communication mode with the selected time intervals, the extension of functionality by providing the ability for a mobile station to detect and process signals from a larger number of neighboring base stations. Device for the transmission of messages for the shared channel in the communication system, multiple access, code-division multiplexing a radio transmitter of a base station comprising the transmitter of a particular channel for outputting the channel signal with the second transmit power level for a predetermined period of time and outputting the channel signal to the first transmit power level during the rest time, and the transmitter common channel for the transmission of messages for the shared channel during the selected time interval and the receiver of the mobile station, moreover, the power supply voltage is supplied to the receiver during the time of reception of a signal of a specific channel with the second AC power is turned off during the rest time to ensure the operation of the receiver in the inactive mode. 7 C. and 10 C.p. f-crystals, 14 tab., table 1.

The invention relates to communication systems, multiple access, code-division multiplexing, and more particularly to a device and method for communication control in separated time intervals.

In communication systems, multiple access, code-division multiplexing (mdcr) direct communication link includes a pilot channel signal, a sync channel, paging channel and channel traffic. Using these channels of a base station and multiple mobile stations perform an initial synchronization with pseudocumene (PN) spread spectrum codes and establish channels of the call.

After power on, the mobile station detects a pilot signal having the highest power from the set of pilot signals received through the channels of direct communication line, and demodulates the message channel synchronization for determining the reference time. After determining the reference time of the mobile station then performs demodulation. Upon receipt of a message channel synchronization of the mobile station may be separated by time intervals in which the mobile station periodically monitors the paging channel for pravovoi station mobile station shall transition to the active state, in which the mobile station can provide service call using channel traffic. However, if the mobile station receives the paging message, the mobile station enters an inactive mode, in which it removes the supply voltage from hardware to ensure implementation of the demodulation, including RF/analog part, the search receiver, taps multi-channel receiver and block associations, thus disabling the hardware demodulation.

After the transition to the inactive mode of the mobile station checks is designed for paging message from the base station, as noted above. The base station may transmit the paging message to the mobile station as in separated time intervals, and in the mode without division into time intervals. In any of these modes, the message is transmitted in the unit superquadra having a duration of 80 MS, called the selected time range (segment or slot). Supercar duration 80 MS includes information about the called mobile station, information about a base station and a list of neighbor sectors in the mobile station.

However, if the paging message for a particular mobile station is transmitted only in a predefined time interval, the mobile station can monitor only a specific time interval, instead of the demodulation of the message paging channel for other time periods, disconnect the supply voltage from the hardware demodulation mode mdcr to go into inactive mode. As described above, in the mode with separated time intervals the mobile is connected. In Fig.1 presents the time interval of the message, which is assigned a specific mobile station and which is transferred in one cycle from the base station for a communication system operating in a mode selected time intervals, with the time control, during which the mobile station monitors the allocated time interval.

According Fig.1, the base station transmits the message to the paging channel for the mobile station at a specific time interval that is allocated to the paging channel (11). Certain mobile station then provides the supply voltage for RF/analog circuit of the receiver, starting from the point in time prior to the start time of the specific time interval allocated for the paging channel (12), and includes a search receiver (13). After searching the base station by using the search receiver mobile station assigns the challenge of multichannel receiver for receiving messages paging channel (14).

In Fig.2 illustrates a method of receiving the above message paging channel. In Fig.2 shows the case when the sixth time interval allocated to the mobile stercobilin station moves from the inactive mode to the active mode for a few tens of MS before the sixth time interval of the search call for demodulation signal, transmitted in the time interval of the search call, supplies power to the RF/analog circuit of the receiver searches for pilot signals of the base station and allocates multipath components of the detected pilot signal for reception by the removal of a multichannel receiver.

In the existing system standard IS-95 base station can operate in a mode with selection of time intervals, and in the mode without allocating time intervals, but it is the system designer determines whether the system is maintained mode with selection of time intervals or mode without allocating time intervals. However, when the base station operates in the mode selected time intervals, the mobile station can increase the time spent in standby mode due to the implementation of the demodulation channel search call within a pre-selected time interval, given the limited resources (battery power of the mobile station. Thus, the mobile station monitors only selected time interval, during which should be used for message retrieval call, and for other temporary inter is on, thereby increasing the standby time.

As noted above, Fig.1 and 2 illustrate the transmission in the selected interval search call to the base station and the length of time the mobile station in the existing system standard IS-95, both the base station and the mobile station is operating in the mode with the selected time intervals. For demodulation of the signal in the selected time interval of the search call intended for the mobile station, it goes into active mode from the inactive mode for a few tens of milliseconds up to her intended time frame of the search key to search a base station, which is supposed to be sent in the time interval of the search call.

RF/analog circuit of the mobile station exits the idle mode for operation in steady state (12). After that, search the receiver of the mobile station exits the idle mode to determine the correlation and energy for the received signal and the PN code of the spread spectrum mobile station to detect the pilot signal, taken with high enough energy (13). The mobile station repeats the stages defined active sectors in the list of neighbor sectors, until then, until it is discovered only the pilot signal which exceeds the threshold energy. When the failure detection of the pilot signal with a sufficiently high energy mobile station cannot properly to demodulate the signal in the time interval of the search call. However, when receiving the pilot signal with a sufficiently high energy mobile station assigns for the reception of multipath components of the detected pilot signal is a slight diversion multi-channel receiver to demodulate the signal in the time interval of the search call (14).

After message retrieval call yourself by demodulation, the mobile station switches to the state of the channel traffic to establish lines of communication. However, if the message retrieval call is not detected, then the mobile station to conserve power again goes into inactive mode until the next time interval allocated for the search call.

When this mobile station determines the period between time intervals, in which shall be transmitted to the message retrieval call for a particular mobile station, and notifies obtained are unique numbers from 0 to 2047, and the time interval to be monitored is determined by a hash function that is unique to each mobile station.

Alternatively, the mobile station may determine the period between the two time periods by changing the index cycle time interval (DOI) in accordance with the retry algorithm for detection of the pilot signal. The ratio between the actual period between the time intervals and DOI is defined as follows.

Period, time interval = 16*2 DOI [time interval], where DAI is= 0, 1, 2, 3, 4, 5, 6 and 7.

As shown in Fig. 2, if must first be controlled sixth time interval and DAI = 0 (i.e., the period between time intervals equal to 16), then the mobile station to conserve power supply is in an inactive mode for the sixth time interval before the 22nd time frame.

When enabling the mobile station to operate in a mode with the selected time interval for the mobile station, it is important to perform the re-discovery when searching for the pilot signal for sectors registered in the list of active sectors in the list of neighbor sectors to control the synchronism after the inactive mode, to detect active sector for the reception of the message retrieval call. When implementing a receiver in an existing system standard IS-95 to perform this operation there are 3 PSH-scan (1 PSH-scan (i.e., the period of the PN code of the spread spectrum) = 26,7 MS), i.e., 80 MS. The mobile station shall complete the determination of the active sector for demodulation and accurate data entry into synchronism for 80 MS. However, if the mobile station is not able to determine the active sector and cannot perform rediscovery due to unsatisfactory conditions in the channel, supercat duration of 80 MS is not sufficient to perform the procedure of re-discovery for a maximum of 20 neighboring sectors. In this case, the mobile station cannot correctly receive the message retrieval call. I.e., in the existing system standard IS-95 reducing the time of re-discovery in order to save battery power can cause loss of synchronization and failure detection message retrieval call. In particular, when the number of neighboring sectors is increasing, then for 80 MS is difficult to detect a pilot signal from a neighboring sector, with good reception conditions.

In addition, the system standard IS-95 topics performed for a time interval of 80 MS, when you received the message retrieval call. In the system standard IS-95 mobile station performs a search operation for one sector in the list of active sectors or in the list of neighbor sectors according to the following law, and the mobile station remains in a state of search challenge:

And-->N1-->A-->N2-->...-->-->R

Here R represents the rest of the sector, other than active sector and neighboring sectors.

Lists active sectors and adjacent sectors are updated by performing a search operation of the pilot channel signal in the above order. To account for variations in conditions in the channel for the mobile station and the change of the neighboring base stations, the search operation should be carried out often. However, increasing the DOI increases the time spent in the inactive mode. For this reason, are often difficult to search in the inactive mode during the time interval of 80 MS. Therefore, it is impossible to search and manage active sectors or adjacent sectors by a rapid response to variations in the peripheral environment of the transmission, which causes difficulties in finding a satisfactory active sector or neighboring sector in procedures is not possible to demodulate the message retrieval call. I.e., it may be difficult to perform effective maintenance and support system for DOI with a sufficiently high value. However, maintaining the DOI at a low value does not coincide with the purpose of saving power consumption mode with the selected time intervals. I.e. reducing the time during which continues inactive mode is a disadvantage from the point of view of saving power consumption power. Furthermore, in cellular systems in the microwells or ecoacademy with small cell sizes, this problem becomes even more serious. I.e., when the mobile station moves from the inactive mode to the active mode to control the time interval of the search call because the mobile station has already missed a lot of cells, the previous list of neighboring cells may be useless. The result is a mobile station may lose synchronization and therefore will not be able to answer the search call, so she would have to return to the initial condition of entering into synchronism.

As described above, the mode channel search call mode with the selected time intervals, and the method of transition and Protocol Adachi, inherent in the system of IMT-2000.

The present invention is a device and method that allows a communication mode with the selected time intervals in the communication system mdcr.

Also the present invention is a device and method that uses a new method of transmitting pilot signal and a new mode with the selected time intervals to ensure efficient operation in the communication system mdcr.

In addition, the present invention is a device and method to enable the mobile station to detect and process signals from the increased number of neighboring base stations while reducing the power consumption and reduce complexity in the communication system mdcr using the mode with the selected time intervals.

These results are in accordance with the claimed invention are achieved by the fact that the transfer method message retrieval call for the mobile station in the communication system mdcr in which the mobile station receives the pilot signal from the second transmit power level for a predetermined time and receives the pilot signal from the first transmit power is and with the second transmit power level and the duration of the time interval, selected to receive the message retrieval call, to exit idle mode and turning off the power supply during the rest time to work in an inactive mode.

The method may further include the step of sampling the received pilot signal having the second power transmission, preservation sampling the pilot signal, searching the stored pilot signal during the time the inactive mode to perform discovery channel and then perform the selection of the sector and the distribution of taps of the receiver in accordance with the search results.

The above results are achieved also by the fact that the transfer method message retrieval call for a mobile station in said communication system mdcr includes the steps of supplying power during a time of reception of the pilot signal with the second transmit power level to a time interval selected to receive the message retrieval call, to exit idle mode and save a received pilot signal, and the operation in the idle mode after receiving the pilot signal, searching the stored pilot signal during the time the inactive mode and the selected sector and distribution olengo time interval to exit idle mode, receiving a message retrieval call, enable the designated branches to process a received message retrieval call and work in an inactive mode after processing the message retrieval call.

Moreover, these results are achieved in that the device for receiving the message retrieval call for a mobile station in said communication system mdcr contains the receiver, to which a supply voltage is supplied during the time of reception of the pilot signal with the second transmit power level, time, message speed channel search of the call and the selected time interval, to perform the receive operation, and the supply voltage is switched off at other times to work in the inactive mode, the search block to save the pilot signal received from the second transmit power level, and search for the pilot signal to perform channel detection and outlets for receiving messages speed channel search call to determine the presence or absence of a message retrieval-call in the selected time interval, and the taps are included only if the message retrieval call for processing a received message retrieval call.

Specify isowa to the base station in the communication system mdcr includes the steps of transmitting a pilot signal with a transmit power higher than the normal transmission power, channel pilot signal within a predetermined time, and the channel search call, use the normal power transmission, message transmission speed of the channel search of the call, indicating the presence or absence of message retrieval call, by channel high-speed search call before the time interval allocated to a specific mobile station, and send the message retrieval call channel search call during the time intervals allocated to the search call.

In addition, this result is achieved in that the method of receiving a message retrieval call for the mobile station in the communication system mdcr includes the steps of applying power to the wireless receiver during the time of transmission of the pilot signal from the second transmit power to receive and save the pilot signal and removing power from the RF receiver to search the stored pilot signal in an inactive mode and perform discovery channel, output from the inactive mode to the time during which the message is sent to the high-speed channel search call to receive messages skaala search call to determine the presence or absence of a message retrieval key for the selected time interval, and when there is a message retrieval call, to exit a dormant mode for a selected time interval for processing the received message retrieval call and then transition into an inactive mode, otherwise performing the work in an inactive mode during the selected time interval.

The transmitter is a base station in the communication system mdcr contains at least one generator of the pilot channel signal that includes a first multiplier for multiplying the input signal of the pilot channel signal at the code of the spread spectrum and the first controller gain to generate the pilot signal by multiplying the output signal of the first multiplier to the value of the gain generator channel search call includes a second multiplier for multiplying the pipe symbol search call on the extension code spectrum and the second controller gain for the message retrieval key for the duration of selected time interval by multiplying the output signal of the second multiplier gain value, an adder for summing output signals of at least one generator of the pilot channel signal with the output signal of the generator canola spectrum and the controller bronirovania to control the time of operation of the first controller gain and the second controller gain, when this controller bronirovania controls the gain value of the first controller gain for the transmission of the pilot signal with the second transmission power for a predetermined time and for transmitting the pilot signal with the first transmit power lower than the transmit power for the rest of the time.

In addition, the receiver of the mobile station in the communication system mdcr includes RF receiver, activated within a predetermined time interval, in which the pilot signal with a higher transmission power than the transmission power for the rest of time and scheduled time frame, and operating in the inactive mode during the rest of the time, except for a predetermined time interval and assigned time window, and the search block, activated at the moment of time when activated by the wireless receiver, to save a received pilot signal, and the search for the pilot signal to perform channel detection and bends, activated during the assigned time slots, for processing the received message.

To achieve these results, the device for the transmitter of a particular channel for outputting the channel signal with the second transmission power within a pre-defined duration of time and outputting the channel signal to the first transmit power level during the rest time, the transmitter and receiver General channel to send the message shared channel during a selected time interval; and the receiver of the mobile station, and the voltage of the power supply in the receiver during the duration of reception of a particular channel with the second transmit power level and the duration of selected time interval to release the receiver, and the voltage of the power supply is disconnected from the receiver during the rest time to ensure the operation of the receiver in the inactive mode.

The invention is illustrated in the following detailed description, illustrated by the drawings, which represent the following:

Fig.1 is a diagram illustrating a method of receiving channel search call in normal mode with the selected time intervals in the communication system mdcr;

Fig.2 is a chart illustrating the operation of the search call in a mobile station in normal mode with the selected time intervals, when the sixth time interval is defined as a first controllable time interval, and the period of time intervals equal to 16;

Fig.3 is a diagram illustrating a method of receiving channel search call in accordance with a possible embodiment of ntsoane speed channel search call if no message retrieval call, in accordance with a possible embodiment of the present invention;

Fig.5 is a diagram illustrating a method of receiving channel search call using the speed channel search call, when there is a message retrieval call, in accordance with a possible embodiment of the present invention;

Fig. 6 is a chart illustrating the property direct the pilot signal, to enable the mobile station to detect the signals from different base stations by the instantaneous increase the power of the pilot channel signal in accordance with a possible embodiment of the present invention;

Fig. 7 is a chart illustrating various methods of increasing the power of the pilot channel signal in the presence of different base stations, in accordance with a possible embodiment of the present invention;

Fig.8 is a diagram illustrating a method for allocating transmit power of the base station, the transmit power of the pilot channel signal is divided using a set of spread spectrum codes, in accordance with a possible embodiment of the present invention;

Fig.9 is a block shdow spread spectrum before transmission in the communication system mdcr, in accordance with a possible embodiment of the present invention;

Fig.10 is a block diagram of the receiver of the mobile station;

Fig. 11 is a block diagram of the search receiver in the receiver of Fig.10 according to a possible variant of implementation of the present invention;

Fig. 12 is a block diagram of a compressor unit according to Fig.11 according to the first variant implementation of the present invention;

Fig. 13 is a block diagram of a compressor unit according to Fig.10 according to the second variant of implementation of the present invention;

Fig. 14 is a block diagram of a compressor unit according to Fig.10 according to the third variant of implementation of the present invention.

To implement search operations, the pilot signal is performed during supercade (in this case, it is assumed that the duration of supercade is 80 MS) for receiving messages over the channel search of the call, according to a possible variant embodiment of the invention provides for the maintenance of a received pilot signal in memory and then disabling the RF/analog circuit and the inclusion of only the search receiver. Accordingly, the mobile station can perform an effective support system, and it can be used for re detection for demodulation of the signal is high, than the ordinary power of the pilot signal, during the time of multiple characters (for example, the time from one to four characters), since a predetermined time in order to minimize the power consumption by the search receiver in the receiver of the mobile station and to reduce the search time. By instantly increasing the capacity of the pilot signal, the mobile station reduces the time required in the process of re-discovery for reception of a signal in the time interval of the search call, thereby saving power supply.

Description of the preferred option is limited to the state of the channel search call mode with the selected time intervals. However, the invention is applicable to all cases, when a message is transmitted only in a predefined time interval and is not transmitted to the other time intervals in a straight line communication system mdcr.

As shown in Fig.3, the base station transmits a message retrieval call for a particular mobile station on the channel search of the call in a pre-defined interval of time represented by the reference position 31. I.e., the transmitter channel search call to the base station of the call, tentatively scheduled in the mobile station. Due to the preliminary planning of the time interval for message retrieval call for a particular mobile station, the mobile station may transition into an inactive mode for all other time intervals (i.e., unscheduled time slots) to conserve battery power. The mobile station demodulates the message retrieval key for the search interval of the call and simultaneously performs a search in standby mode to support the system and procedures for switching communication channels. However, for the mobile station is difficult to undertake a proper support system just depending on search in standby mode is performed in each time interval of the search call. To solve this problem, the base station periodically generates pilot signals in time intervals 321-326 with higher than normal power level that presents a reference position 32. I.e., in the present embodiment, is a new way of transmitting the pilot signal for the periodic transmission of pilot signals having higher power than the transmit power is usually transmitted through the channel pil can either increase the transmission power of the pilot signal, or you can use a separate channel transmitter to generate the pilot signal of a higher power. In addition, the transmission period of the pilot signal of high power may be identical to the duration of the signal channel search call.

The mobile station then performs a support system in times other than the duration of the time interval of the search call, using accepted before that, the pilot signal with a higher power, and quickly and accurately updates the list of active sectors and the list of neighbor sectors. That is, when the base station transmits pilot signals of high power in the selected time intervals 321-326 search call, the mobile station includes a radio frequency receiver by applying power to transmit a pilot signal 324. The selected time interval represented by the reference position 31. In addition, the mobile station makes a selection of multiple symbols of the pilot signal (for example, 325, 326), taken approximately at the time when the wireless receiver is powered, and stores the sample data in memory. Therefore, in the mobile station RF/analog cascade transitions from the inactive mode to the active mode at the time the specified reference position 35, to perform the configuration on the channel. Furthermore, after storing the sample data in the interval 341 mobile station disables RF/analog cascade by switching off the supply voltage to save power supply. After that, the mobile station again delivers the supply voltage for RF/analog cascade over time 332 and includes the removal of a multichannel receiver as shown by the reference position 36. The mobile station can save the pilot signals 342 and 343, adopted in the interval 332 search call in memory. Since the pilot signals have high power, you can reduce the time to determine the correlation during the search process, thereby reducing the overall search time. The reduction in search time can reduce the power consumption by the search receiver.

After saving sampling data search receiver in the mobile station moves from the inactive mode to the active mode to start the search operation, as represented by the reference position 35. Because the mobile station has received the pilot signal 324 high power, the search receiver can protectivity sufficient energy level, even if the duration is stations for shorter search time. During this time, search mobile station can continuously search in standby mode, which is performed in the previous time interval of the search call. Since the mobile station searches for adjacent sectors in the state, when only the search receiver and the RF/analog stage and the multi-tap receiver is disabled, it is possible to reduce the consumption of power required by the mobile station to search for pilot signals. During this time the search is also a process of re-discovery for demodulation of the signal in the time interval of the search call. I.e., the mobile station updates the list of active sectors and the list of neighbor sectors by way of the search performed in a state where the radio frequency/analog cascade is not supplied power supply voltage, and can choose either the only active sector for demodulation of the signal in the time interval of the search call of updated information sectors, or to select multiple sectors with high energy. The mobile station performs re-detection using the selected one or more sectors. Therefore, by performing re-discovery with the use of potreblyaemoi power and reduce the time of re-discovery saving battery power.

The mobile station performs a search operation in a state where the radio frequency/analog cascade is not applied supply voltage, and performs re-detection during the search receiver to either detect active sector, or to define multiple sectors with high energy. After searching the group of active sectors and groups of neighboring sectors, the search operation is terminated. If there is still time before the interval search call, then the mobile station may return to the inactive mode.

The period of disqualification multi-channel receiver in the mobile station, as shown by the reference position 36, begins at the moment when the search receiver detects the active sector through re-discovery and detects multipath component of the received signal, which is assigned to the row. For demodulation at this point may also be included block Association.

Thus, in this embodiment of the method, in addition to the process of re-discovery as a preliminary operation for demodulation of the signal in the time interval search visivamente intervals 321-326, to perform a search operation, thereby providing effective support system and reducing the time of re-discovery.

Since the duration time of the search receiver is small, the search receiver is switched from the inactive state to the active state only for the duration of sampling, and the rest of the demodulation modules remain in the inactive mode, the power consumption can be reduced. Such an effective support system reduces the duration of the process of re-discovery, pre-onset time interval of the search call, which further reduces power consumption. In addition, one or more sectors with high energy pre-selected the search process performed immediately before the time interval of the search call (state, when the RF/analog cascade is not powered), and then the search is performed only in the selected sectors for the duration of re-discovery, in order to reduce the time re detection, thereby reducing the capacity of the battery.

The method of sending the pilot signal described above, and the giving and receiving signal of the high-speed search call the proposed system for IMT-2000. Speed channel search call is a new recently proposed physical channel to pre-notify the mobile station of whether the sent message retrieval call for the mobile station in the next time interval of the search call. I.e., in the process, the base station transmits one or two characters that are not encoded and not premiani, speed channel search call in a predetermined time, the mobile station controls the inactive mode by demodulation of symbols taken on a high-speed channel search call. For example, when the characters of high-speed channel search call are all "1" that indicates that the message retrieval call is transmitted from the base station in the next time interval of the search call, then the mobile station is prepared for the demodulation of the message retrieval call. Otherwise, when the characters of high-speed channel search call are all "0", which indicates that the message retrieval call will not be transferred from the base station in the next time interval of the search call, it does not require keeping isowa can demodulate, for example, using on-off keying.

In Fig.4 and 5 shows timing diagrams illustrating how the base station transmits bits of information on a high-speed channel search call. Although in Fig.4 and 5 show the case where the signal of the high-speed channel search call is transmitted one time only, the method is applicable in the case when the signal speed channel search call is sent repeatedly. For demodulation of the high-speed channel search of the calling mobile station performs occurrence in synchronism with the use of pilot signals of high power, shown in Fig.4 and 5, transmitted from the base station. The mobile station determines the active sector by performing a search operation using the data sample of the pilot signal of high power, received immediately before the reception signal of the high-speed search call, demodulates the signal of the high-speed channel search call by assigning exhaust receiver for receiving a signal component of the high power taken from a particular sector, and then determines whether to switch to the time period of the search call. It is important that the cascade demodulation, vcnt time it is shown in Fig.4 and 5, for demodulation of the high-speed channel search call. The mobile station may store the input signal in any time interval before the character speed channel search call and search using a common pilot channel signal. This can increase the time in standby mode mobile station as compared with the conventional operation of re detection for idle mode. But if the mobile station stores the signal in the period of time when the base station transmitted pilot signal with increased power, one can expect increased to a greater extent time standby.

In Fig. 4 shows the case when the base station notifies the mobile station that the message retrieval call will not be transferred in the interval search call using the speed channel search call.

According Fig.4, the base station transmits the message retrieval call for a particular mobile station channel search mode call with the selected time intervals at set periods. Fig.4 illustrates the case when the base station does not transmit the message retrieval-call in the appropriate time the IR base station transmits a message retrieval call for a particular mobile station only during a specific time interval of the search call pre-planned coordinated mobile station and the base station, a mobile station may move in an inactive mode to conserve battery power. During the time interval of the search call, the mobile station demodulates the message retrieval call and performs a search in standby mode to support the system and perform switching of communication channels. In addition, because the base station is difficult to perform a quick system support just depending on search in standby mode, which is performed in each time interval, as described above, the base station uses a new way of transmitting the pilot signal for the periodic transmission of pilot signals having a power higher than the normal transmission power of the pilot signal on the pilot channel signal, as represented by reference numeral 42. In addition, channel transmitter base station transmits the message to the high-speed channel search call for notification of message transmission on a high-speed channel search call, as indicated by the reference position 43.

For searches mobile station needs to take a sample of data from the pilot signal you what about the call, presents a reference position 43, and save the sample data. With this purpose, RF/analog cascade mobile station moves from the inactive mode to the active mode before the time of transmission of the pilot signal high power to perform sampling and preservation of samples. After saving sampling data for RF/analog cascade no power and he again transferred from the inactive mode to the active mode for the demodulation of a high-speed channel search call.

After sampling the search receiver is translated into an active state to start your search, as represented by the reference position 46, and after detecting the pilot signal component detects multipath propagation for the purpose of allotment for receiving the detected multipath signal, to receive a signal of a high-speed channel search call. I.e. the removal of the receiver must be switched to the active mode prior to the appointment of-way for the reception of multipath signal, as represented by the reference position 47 and the block Association must also be translated into an active state to control bronirovanie mobile station and demodulating bits of information which will be transmitted in the current interval search call RF/analog stage and hardware demodulation disable feed them food and then go into an inactive mode, the interval of the search call, as represented by the reference position 44 and 47, after demodulation bit high-speed channel search call. Of course, if the search receiver is not completed search during this time, the search receiver continues the search until, until you have completed the search, required to support the system.

In Fig.5 illustrates the operation of a channel search call using speed information channel search call, in which there is a message retrieval call. As described above, the RF/analog cascade transitions from the inactive mode to the active mode at the same time as in Fig. 4, to perform sampling and preservation of samples and then re-enters the inactive mode. RF/analog cascade again is switched into active mode for demodulation of a high-speed channel search call and after demodulation goes back in inactive mode. Then re-detection time interval of the search call RF/analog cascade doleysova. Search receiver works differently than shown in Fig. 4, and this difference is that the mobile station should set the supply voltage for RF/analog cascade to receive the message retrieval call, because the search receiver is detected by means of bits of information transmitted on a high-speed channel search call that in this time interval the search call message retrieval call. Search receiver must perform system maintenance and re-discovery by performing continuous search. For reception of a signal channel search call search receiver must reassign the exhaust receiver. This assignment of taps may be different from the destination outlets for signal reception, high-speed channel search call. This operation will continue when the distribution of multipath components made diversion and block associations or search receiver, until completed demodulation signal channel search call.

If the message channel search call is transferred to an inactive mode, the base station increases the ratio of the power of the pilot signal straight line swatchimage search base station and transmits the message and the information about the presence/absence of messages on the channel search call and high-speed channel search call. The mobile station then compresses the signals in this period to detect signals from different base stations receives multipath signals transmitted from the respective base stations to quickly locate the channels, and then accepts the message for processing.

Fig.6 illustrates the direct channel, according to a possible variant embodiment of the invention, in which the ratio of transmission power in the pilot channel signal to full power transmission to the base station instantly increases to allow the mobile station to detect the signals from different base stations. According Fig.6, the base station increases the transmission power of the pilot channel signal P1 is greater than the normal transmission power, for a predetermined period of time Tr. The base station reduces the transmission power of some channels of traffic or interrupts the transmission of the traffic channels, to produce the increased transmission power of the pilot channel signal while maintaining the total transmit power. I.e., the transmission power of the pilot channel signal is increased compared with the normal transmission power of the base station within a short period of time Tr. For a more effective support system Tatras.

In Fig.6 shows the case when some channels traffic does not pass, or transmit with low power transmission in the interval of duration Tr, and the interval Tr includes the border of the two data frames. This shows that the degradations caused by the transmission of the traffic channels with a power lower than the normal transmission power, takes the time allocated for the duration of two frames of data, this prevents deterioration of the characteristics that would have occurred at a concentration of one complete frame of data. To ensure the same characteristics for the two data frames duration Tr is divided in half and is the Tr/2 for the respective data frames. The mobile station is synchronized with the base station must have information about the duration of the Tr and the location of this interval, at which the base station increases the transmission power of the pilot channel signal.

The length of time Tr during which the base station increases the transmission power of the pilot channel signal, depends on the radio propagation conditions in the vicinity of the base station, depending on the configuration of the base station and bandwidth transfer. The longer the duration of the Tr, the greater increase of the Tr becomes too large, the transmit power allocated for data transmission, will be dedicated channel pilot signal, which will lead to deterioration in system throughput. It is therefore necessary to control the duration of the interval Tr in accordance with the operating conditions of the system.

For example, if the system has a bit rate 3,6864 Mega-code elements per second (Me/C), the frame duration is 20 MS, and the length of the Tr consists of 2048 code elements, the duration Tr is 0.55 MS. According Fig.6, since the interval Tr is divided in half between the two data frames, each frame has a time of 0.28 MS (0,55 MS/2), during which the transmission power of the pilot signal is increased relative to the normal power transmission. The duration of 0.28 MS is a very small duration, which corresponds to 0.025% of full data frame duration of 20 MS, and deterioration of characteristics in a straight line due to this short interval of increased transmit power of the pilot signal will be negligible.

If there are multiple base stations in the vicinity of the mobile station, the length of time Tr during which the transmission power of the pilot signal increases relative to normalicy base station can simultaneously increase the transmission power corresponding channels of the pilot signal. Alternatively, the base station can increase the transmission power corresponding channels of the pilot signal sequentially, where each of them increases its power in accordance with a predefined sequence. The length of time Tr during which the transmission power of the pilot signal from the respective base stations is increased relative to the normal power transmission, can be assigned to base stations or be assigned periodically.

In Fig.7 presents a method of increasing the transmission power of pilot signals in the case where multiple base stations are located together in a specific area and at the same time increase the transmit power corresponding pilot signals. In this situation, the mobile station and multiple base stations have pre-defined indication of when to increase the transmission power of the pilot signal relative to the normal power transmission. Because the mobile station knows which base station to increase transmission power of the pilot signal, it compresses the received signal using a code spread spectrum for the corresponding channel pilot signal to measure the level przemyk stations to measure real-time power of the pilot signals, taken from the respective base stations, or memorize the received signals in the memory to implement their subsequent Chateau

According Fig.7 interval Tr, in which the base station increases the transmit power, may have a fixed or variable value in accordance with the base stations. This allows to obtain more optimal results with regard to the topography of the environment in the vicinity of base stations and cell size. In addition, the power levels PWR(A), PWR(B) and PWR(C) of the respective channels, the pilot signals may be equal to each other when the corresponding base station increases the transmission power of the corresponding channel pilot signals, when mobile

the station is in the field of switching communication channels. This is because the mobile station may have difficulties in the comparison of the relevant relations power of pilot signals received from respective base stations, if the base station transmits pilot signals with different transmission power.

Fig. 8 illustrates a method for allocating transmit power of the pilot channel signal in the case where the base station divides the transmit power of the pilot channel signal with poewred in the pilot channel signal within a short period of time, because any increase in transmit power may affect the receiving part, for example on channel estimation block. In addition, if there is a mobile station, in which it is unknown what the transmit power of the pilot channel signal will be changed in a short time, or a mobile station which is not yet synchronized, the change of the transmission power of the pilot channel signal may cause communication of the mobile station with improper for her base station.

In the embodiment of Fig.8 increased power of the pilot signal is distributed across multiple code channels, which are expanded by using different spread spectrum codes, instead of simply increasing the capacity of the conventional channel pilot signal during the time duration Tr. In this case, the codes will be used, expanding the range of WO', W1',..., Wn'. This type of pilot channel signal as a type of pilot channel signal according to Fig.6 and 7, can be used for all structures of the channels, where the channel pilot signal must be transmitted with increased power transfer. In the case of this type, pilot signal to reduce interference to other receivers, the transmit power used for common pilot channel signal, rawname the transmission interval Tr, usually provided in the channel, the pilot signal is allocated between the different spread spectrum codes. The definition of "common pilot channel signal" refers to the pilot channel signal, which is used in the normal state during the time duration different than the duration Tr.

If the transmit power of the pilot channel signal is distributed between different spread spectrum codes, the signal P(t) of the pilot channel signal can be expressed as follows:

P(t)=GO*C(0)+G1*C1(t)+...+Gn*Cn(t)

where Gn is the gain of the corresponding channel, a Cn(t) represents the extension code of the spectrum for the corresponding channel pilot signal. In this formula it is assumed that the pilot signal is transmitted through the (n+1) different code channels. The gain Gn of the respective channels can be expressed in the form of a complex number. In addition, as spread spectrum codes are orthogonal codes for the respective code channels.

In Fig. 9 channel transmitter of a base station, which transmits the message channel search call, message speed channel search call and the pilot signal in the inactive mode according to a possible variant sushestvitelnoe channels. I.e., in Fig.9 is omitted channel encoders, repeaters characters, premarital channels, blocks display signals for the respective channels. Output node PSH extender 88 is connected to the in-phase-quadrature modulator, which converts the output signal VS of the extender 88 in the RF signal.

Transmitter channel pilot signal does not perform channel coding for the pilot signal. Therefore, the input signal is the pilot signal is a non-encrypted data, which is transmitted with high power transmission at specific intervals, presents a reference position 32, 42 and 52 in Fig. 3-5, or transmitted by distribution channel pilot signal between different spread spectrum codes, as shown in Fig.8. I.e., as shown in Fig.9, the pilot signal orthogonal expands the spectrum using multipliers 80-0... 80-n using different orthogonal codes WO'. . .Wn', and then gain it is controlled by their respective schemes gain control 82-0. . . 82n. After this, the signals adjusted by strengthening, expanding the spectrum using PSH extender 88 using shared code spread spectrum and then transmitted.

The characters in the pilot channel signal transmission Tube 54 extends orthogonal message channel search call using the assigned orthogonal code Wp.

Data speed channel search call is transmitted without channel coding with pre-defined duration before sending the message channel search call in an inactive mode, as represented by the reference position 43 and 53 in Fig.3-5. The multiplier 72 multiplies the high-speed data channel search call on orthogonal code assigned to the high-speed channel search call.

In addition, channel transmitters of the base station include other channel transmitters in addition to the transmitter for channel pilot signal, channel search call and high-speed channel search call. Channel transmitters in Fig.9 include a transmitter channel synchronization and M transmitters channels of traffic, in addition to transmitter channel pilot signal to transmit the pilot signal using the n Walsh codes, the transmitter channel search call and transmitter high-speed channel search call.

According Fig.9 at the set time, the controller 81 bronirovania adjusts the gain of the corresponding channel transmitters. In the embodiment of Fig.6, where the transmit power of the pilot channel signal is temporarily increased, the controller 81 bronirovania adjusts the gain of Sonia with normal power transmission. During the time Tr is the transmission power of other channel transmitters is reduced to maintain full power transmission to the base station unchanged. Channel transmitter of a base station according to Fig.9 can be applied to any structure with appropriate regulation of the gain of the respective channels.

According Fig. 9 multipliers 80-0...80-n multiply the pilot signal consisting of all "1", the corresponding orthogonal Walsh codes WO'...Wn' to expand on the spectrum of the pilot signal. The controller gain 82-0...82n multiply extended spectrum pilot signals from the outputs of the multipliers 80-0...80n to appropriate the gains GO...Gn under control of a controller 81 bronirovania. The output signals of the controllers gain 82-0...82n are summed in adders 84, 86 and 68 and then multiplied by the total PN code of the spread spectrum in the multiplier 88 before sending.

The multiplier 50 multiplies the pipe symbol synchronization for orthogonal code Ws to expand the spectrum of the symbol sync channel, and the controller gain 52 multiplies advanced pipe symbol synchronization on the gain Gs under control of a controller 81 bronirovania. After that, the output signal of the controller 52 strengthening summarized in su the resident 54 multiplies the pipe symbol search call on orthogonal code Wpto extend the pipe symbol search call, and the controller 56 gain multiplies the pipe symbol search call on the gain Gpunder control of a controller 81 bronirovania. After that, the output signal from the controller 56, the gain is summed in the adder 64 and multiplied by the total PN code of the spread spectrum in the multiplier 88. Here, as described above, the pipe symbol search call is transmitted in the unit of a certain length in an inactive mode.

The multiplier 72 multiplies the high-speed data channel search call on orthogonal code Wqpto expand high-speed data channel search call, and the controller 74 gain multiplies the high-speed data channel search call on the gain Gqpunder control of a controller 81 bronirovania. After that, the output signal from the controller 74, the gain is summed in the adder 76 and multiplied by the total PN code of the spread spectrum in the multiplier 88. Here high-speed data channel search call is generated for a predetermined time to send the message channel search call in an inactive mode. Data speed channel search call present with the AET data symbol in the first channel traffic to the orthogonal code WT1for the expansion of the symbol data, and the controller 60-1 gain multiplies extended spectrum data on the gain GT1under control of a controller 81 bronirovania. After that, the output signal of the controller 60-1 gain is summed in the adder 62 and multiplied by the total PN code of the spread spectrum in the multiplier 88 before sending.

The multiplier 58-M multiplies the symbol data in the M-th channel traffic to the orthogonal code WTMfor the expansion of the symbol data, and the controller 60 gain multiplies extended spectrum data on the gain GTMunder control of a controller 81 bronirovania. After that, the output signal of the controller 60 gain is summed in the adder 62 and multiplied by the total PN code of the spread spectrum in the multiplier 88 before sending.

As described above, the mobile station compresses the signals received over the duration of the Tr in the inactive mode, to detect signals transmitted from different base stations, and receives a message channel search call transmitted in the established periods for processing a received message, channel search call. What parameter of the mobile station should be measured depends on the goals of the mobile article is serenia mobile station is propagation delay. However, if the mobile station must perform the distribution of taps of the receiver or to carry out measurement procedures for switching communication channels, the parameter measurement is the propagation delay and the signal level of the corresponding multipath component.

The receiver of the mobile station can use a regular search receiver to search for the received compressed signal. However, the conventional serial search receiver causes the increase in the duration of time Tr or Td. Search receiver with a reduced duration of time Tr or Td can be implemented in the following ways when performing compression and search.

In the first method for the search receiver uses coherent filter. Agreed, the filter can quickly calculate the correlation between the received signal and the locally generated code of the spread spectrum. However, the lack of matched filter is that it increases the complexity of the receiver and power consumption. For this reason, agreed to implement the filter difficult. In particular, when the pilot signal has low power, the integration time must be increased by calculating the correlation MEK consistent filter with a large integration time. However, by coordinating the working time of the matched filter with the time when the ratio of the transmission power in the pilot channel signal, provided by the invention, to the full transmit power of the base station is temporarily changed, consistent filter can reduce the integration time required to determine the value of the correlation. In addition, the base station changes the ratio of the power of the pilot channel signal to full power transmission in regular sequence, and consistent filter the mobile station can perform compression using code expanding the range to the base station, which has a temporal relationship between channel power pilot signal to full power transmission. Of course, it is possible to calculate the correlation between the received signal and the code spread spectrum using a consistent filter, and in the variant corresponding to Fig.5. In this case, you can either compress for received signal code expanding the range to the base station, either to save the received signal in memory for compressing the stored signal later in the regular sequence.

In the second method, the signal is passed during the time Tr or Td keeps the I in this way requires memory for storing the received signal, however, this method is characterized by simple compression method and reduced power consumption. In this way for the implementation of the search receiver uses a sequential search block.

In a possible embodiment of the invention, the block search is implemented according to the second method.

Fig.10 illustrates a receiver of a mobile station according to a possible variant embodiment of the invention. The controller 100 inactive mode controls the supply of power to the RF/analog cascade 140, as shown by the reference position 33, 44 and 54 in Fig.3-5, in an inactive mode. RF/analog cascade 140 receives channel signals transmitted from the base station in a straight line, and converts the received signals into signals to baseband. Analog-to-digital Converter (ADC) 142 converts the analog output signal of the RF/analog cascade 140 into digital signals. The search block 110 receives the pilot signal from the base station to perform the detection of the base station and distribution branches of the receiver. Receivers 121-12N calculate correlation values for the channel signals transmitted from base stations to search for channels.

In Fig.12 presents a block compression of the receiver corresponding to the first variant implementation of the present invention, performing the compression of the pilot signal, advanced different spread spectrum codes, as shown in Fig. 7 and 8. The compressor unit according to Fig.12 expanding the pilot channel signal of the base station multiple orthogonal codes WO'...Wn' and then extends the enhanced signals shared code spread spectrum. In Fig.12 all signals are complex signals.

According Fig.12 the multiplier 210 multiplies the received signal PN code expansion spewie orthogonal codes WO'...Wn' for performing orthogonal demodulation for the compressed signal. Drives 230-23N accumulate the output signals of the respective multipliers 220-22N within a predetermined time. Appropriate drives 230-23N may have different accumulation time. This is because the pilot channel signal, advanced code extensions WO', continuously transmitted unchanged in the ordinary case, can accumulate over a longer time. In this case, the receiver gain should be modified to reflect specific accumulation time. In this embodiment, it is assumed that the drives for the reception channels corresponding orthogonal codes have a fixed duration of time savings. Multipliers 240-24N multiply the output signals of the respective drives 230 to 23N to the corresponding complex gains Go*-GN* to compensate for the phase. The adder 250 adds the output signals of the multipliers 240-T and block 260 squared squares the output signal of the adder 250 for converting the output signal of the adder 250 in the energy value. The multiplier 270 multiplies the value of energy for normalization of the output signal of the block squaring 260.

As shown in Fig.12, the input signal for assetstudio orthogonal codes in the multipliers 220-22N for the implementation of the orthogonal demodulation. The signals from the outputs of the multipliers 220-22N are accumulated in the respective storage devices 230-23N on a per-symbol basis. Multipliers 240-24N multiply the output signals of the respective drives 230 to 23N to the corresponding complex gains Go*-GN* to compensate for the phase components of the complex gain, multiplied by the corresponding orthogonal signals. The compensated phase signals are summed in the adder 250. Block 260 construction converts the output signal of the adder 250 in the energy value. The multiplier 270 multiplies the value of energy for normalization of the output signal of the block squaring 260. I.e. the multiplier to compensate for the gain is the reciprocal of the sum of the squares of the complex gain Gi(i=0, 1, 2, . ..,n). Here the multiplier 270 is used to obtain good compensation gain and is not necessarily required.

The compressor unit according to Fig.12 compresses the received signal, accumulates the compressed signal on a symbol-by-symbol basis, and then calculates the energy accumulated signal.

In the compressor unit of Fig.12 (n+1) elements compress the received signal in parallel. However, the receiver can compress only a portion of the (n+1) orthogonal capricornia channels, pilot signal, it is shown in Fig.7.

In Fig.13 shows a block compression mobile station corresponding to the second variant of the invention, for the case when the transmitter of the base station expands the spectrum pilot signal using a set of orthogonal codes. A compression method corresponding to the second option aims at reducing the power consumption by grouping the input signals having the same code spread spectrum, in contrast to the first variant according to Fig.12, in which at the same time compressed input signals with different spread spectrum codes. Although in Fig.13 shows the case of using two orthogonal codes, this structure is applicable to the compression blocks that use three or more orthogonal codes. In Fig.13 all signals are complex signals.

According Fig. 13 multiplier 310 multiplies the input signal to the PN code of the spread spectrum to compress the input signal. The multiplier 320 multiplies the output signal of the multiplier 310 to the orthogonal code for generating orthogonal demodulated output signal. Here it is assumed that the multiplier 320 is served orthogonal code W0'. The controller 380 switch receiving OA generate a control signal for selecting the first channel, when W0'(i)=W1'(i), and to generate a control signal for selecting the first channel, when the Orthogonal code W0'(i) represents the i-th element of the orthogonal code W0'a orthogonal code W1'(i) represents the i-th element of the orthogonal code W1'. Switch 381 has a first input associated with a multiplier 320, a first output associated with the first channel and the second output associated with the second channel. Switch 381 switches the output signal of the multiplier 320 in the first channel or the second channel in accordance with the output signal of the controller 380 switch.

The drive 330, which is connected with the first channel, accumulates the input signals on a per-symbol basis. The multiplier 340 multiplies the output signal of the drive 330 comprehensive gain (G0+G1)* to compensate for the gain of the phase in the output signal received from the first channel. The signals are switched to the first channel are the elements of the code relating to orthogonal codes having the same sign. Drive 331 connected to a second channel, accumulates the input signals on a per-symbol basis. The multiplier 341 multiplies the output signal of the drive 331 comprehensive gain (G0- the data in the first channel, represent code elements related to orthogonal codes with other characters. The adder 350 adds the output signals of the multipliers 340 and 341, and the block squaring 360 squares the output signal of the adder 350 to convert it to the energy value. The multiplier 770 multiplies the value of energy on the complex gain for the normalization of the signal output unit 360 calculates the square.

The operation of the compressor unit will be first described theoretically. Here it is assumed that the orthogonal codes W0and W1used in the embodiment of Fig.13, have a length of 8 elements (i=8). In addition, it is assumed that the orthogonal code W0" looks+1, +1, +1, +1, -1, -1, -1, -1, and orthogonal code W1" looks+1, +1, -1, -1, -1, -1, -1, -1. Orthogonal codes W0and W1presented in the table (see the end of the description).

In addition, when the input signals of the block compression is equal to r1, r2, r3, r4, r5, r6, r7 and r8, and the gains GO and G1, multiplied by the corresponding orthogonal codes are real numbers, then the signals that have been compressed using code compression WO' in the receiver, having a structure according to Fig.13, can be expressed in the form

Y0=G0*(rl+r2+r3+r4-r5-r6-r7-r8)

Yl=G1*(rl+r2-r3-r4+r5+r6-r7-r8)

Complete onanti code elements in the first the second, seventh and eighth positions and have different components of the code elements in the third, fourth, fifth and sixth positions. Components of the final output signal Y0+Y1 block compression are classified according to whether the corresponding components of the orthogonal codes W0' and W1' are identical or different, as follows:

X0=(G0*+G1*)(rl+r2-r7-r8)

X1=(G0*-G1*)(r3+r4-r5-r6)

Here X0=X1=Y0+Y1. As shown in the above formulas, by classifying the input signals in accordance with combinations of the components of the code elements for the respective orthogonal codes can reduce the number of summation operations performed in the compression process. Although this method has no significant effect in the case of short orthogonal codes, but it is very effective for long-orthogonal codes.

In Fig.13 shows the structure of hardware for the above description. According Fig.13, the input signals are multiplied by the PN spread spectrum codes in the multiplier 310 and then multiplied by the orthogonal code W0 in the multiplier 320. The controller 380 switch compares two orthogonal code to determine identical whether the relevant components to each other, and Horites 320 drives 330 and 340 in accordance with the control signal switching. If the components of the code elements for the two orthogonal codes W0' and W1' are identical, the output signal of the multiplier 320 is supplied to the drive 330 included in the first channel. Otherwise, if the components of the code elements are different, the output signal of the multiplier 320 is supplied to the drive 331 included in the second channel. In addition, the divided signals are accumulated in the respective storage devices 330 and 331 on a per-symbol basis. After that, the multiplier 340 multiplies the output signal of the drive 330 to gain G0*+G1* and the multiplier 341 multiplies the output signal of the drive 331 to gain G0*-G1*. The adder 350 adds the output signals of the multipliers 340 and 341. The output signal of the adder 350 squares with unit 360 calculates the square to convert the energy value. The multiplier 370 multiplies the output signal of block 360 squaring for normalization of the output signals of the multipliers 340 and 341.

In the case where the pilot signal is transmitted with different spread spectrum codes for the above-described structure of the receiver, a mobile station needs to know the ratio of transmit power allocated to the respective orthogonal code, or the corresponding values of the coefficients in the and, or the base station may inform the mobile station using the system parameters. In addition, the receiver can measure these parameters using a simple algorithm. Alternatively, these parameters can be estimated by calculating the power ratio of the compressed signals for the respective orthogonal codes.

In Fig. 14 presents a block compression of the receiver corresponding to the third variant embodiment of the invention, for the case when the pilot signal is expanded by the range of several code spread spectrum, as shown in Fig.7 and 8. In the third embodiment according to Fig.14 channel pilot signal of the base station expands the spectrum using a set of orthogonal codes from W0 to Wn' and is then expanded using a common PN code of the spread spectrum. In Fig.14 all signals are complex.

According Fig.14 the multiplier 210 multiplies the received signal VS the spread spectrum signal for compressing the received input. The multipliers 220-22N multiply compressed signal from the output of the multiplier 210 to the corresponding orthogonal codes W0'-WN' for orthogonal demodulation of the compressed signal. Drives 230-23N accumulate the output signals of the respective multipliers 220-22N drives 230 to 23N to convert them into energy values. The adder 250 combines the output signals of blocks squaring 260-26N.

The compressor unit according to Fig.14 compresses the received signal, accumulates the compressed signal on a per-symbol basis for calculating energy values and then combines the calculated values of the energy. In Fig.14 illustrates a detailed circuit diagram illustrating the compressor unit 150 and the transmitter energy 156 in Fig.11. Unlike other blocks compression unit compression and the energy calculator of Fig.14 separately calculates the energy values of the corresponding channel and combines the calculated values of the energy. The compression blocks in Fig.12 and 13 coherently summarize the compressed values of the respective channels, while the compressor unit according to Fig.14 first calculates the energy values for the respective channels, and then summarizes the calculated values of the energy. The compressor unit according to Fig.14 is exposed to more deterioration in comparison with the compression blocks in Fig. 12 and 13. However, the compressor unit according to Fig.14 has the advantage that it can calculate the ratio of power channels, the pilot signals received from respective base stations, even if he knows the gain of the respective channels.

When searching neighboring frequency vypolnyaetsya temporarily interrupts the reception of a signal of frequency fl, taken at the current time, is shifted to an adjacent frequency f2, the search to be carried out, and then stores the input signal of the adjacent frequency f2 in the memory. After that, the mobile station is shifting rapidly to the frequency fl, taken before it, and continues the reception of the signal of frequency f1. The mobile station required memory for storing the signal of the adjacent frequency. If the duration of time during which the signal of the adjacent frequency is stored in memory that is identical to the duration of the Tr or Td, where the transmission power of the pilot channel signal to full power transmission to the base station, it is possible to reduce the amount of memory required to store the signal of the adjacent frequency. If the transmit power of the pilot channel signal is less than at -12 dB, than the transmit power of the base station, assuming that the effect of propagation delay is negligible, it is possible to obtain the result, consisting in the fact that the conventional device can provide remembering 4000 code elements by storing 256 or 512 of the code elements for time Tr.

The transmitter of the base station according to Fig.9 and the mobile receiver station according to Fig. 10-14 described for the case where the pilot signal is transmitted with a high transmission capacity with the use of the plural is th code. In this case, the compressor unit may include a multiplier for multiplying the input signal by PN code of the spread spectrum to compress the input signal, a multiplier for multiplying the compressed pilot signal by an orthogonal code for the pilot channel signal to orthogonal to modulate the compressed pilot signal, and the drive to accumulate the orthogonal demodulated pilot signal on a symbol-by-symbol basis.

Thus, the system mdcr using a new method of transmitting pilot signal and a new work procedure in the inactive mode, has the following advantages.

1) Have the ability to perform effective support system and rediscovery.

2) Mobile station can detect and process signals from a larger number of base stations.

3) the Mobile station can detect the signals from neighboring base stations with low power consumption and power while reducing complexity of the hardware.

4) the Mobile station can sync and work with a large number of base stations and to achieve the effect of saving power by storing the received signals in the memory and processing the stored signals.

5) in the time mode with the selected time intervals to perform a search operation, and the result can be applied to select the sector and destination branches in the receiver for demodulation of a high-speed channel search call.

6) the System mdcr increases the energy of the pilot signal within a short period of time to complete support system using only block search during this time in an inactive mode, increases the probability of detecting the pilot signal, and reduces the detection time, thereby saving battery power.

1. Way to send the message retrieval call for the mobile station in the communication system, multiple access, code-division multiplexing (mdcr), in which the mobile station receives the pilot signal from the second transmit power level for a predetermined time and receives the pilot signal from the first transmit power level during the rest of the time, including the steps of supplying power during a time of reception of the pilot signal with the second transmission power and the duration of the time interval allocated to receive a message, search the call to exit idle mode and turning off the power supply during the rest time to work in an inactive mode.

2. the within the second transmit power level, save a sample of the pilot signal, searching the stored pilot signal during the time the inactive mode to perform discovery channel and then perform the selection of the sector and the distribution of taps of the receiver in accordance with the search results.

3. Way to send the message retrieval call for the mobile station in the communication system mdcr in which the mobile station receives the pilot signal from the second transmit power level for a predetermined time and receives the pilot signal from the first transmit power level during the rest of the time, including the steps of supplying power during a time of reception of the pilot signal from the second transmit power level to a time interval selected to receive the message retrieval call, to exit idle mode and save a received pilot signal, and the operation in the idle mode after receiving the pilot signal, searching the stored pilot signal during the time the inactive mode and the selected sector and the distribution of taps of the receiver in accordance with the detection result of the channel and the supply voltage during a selected time interval to exit inactive RCW received message retrieval call and work in an inactive mode after processing the message retrieval call.

4. A device for receiving a message retrieval call for the mobile station in the communication system mdcr in which the mobile station receives the pilot signal from the second transmit power level for a predetermined time and receives the pilot signal from the first transmit power level during the rest time, accepts the message speed channel search call, representing the presence or absence of message retrieval call before the time interval allocated to the mobile station containing the receiver, to which a supply voltage is supplied during the time of reception of the pilot signal with the second transmit power level, time, message speed channel search of the call and the selected time interval, to perform the operation, and the supply voltage is switched off at other times to work in the inactive mode, the search block to save the pilot signal received from the second transmit power level, and search for the pilot signal to perform channel detection and outlets for receiving messages speed channel search call to determine the presence or absence of a message retrieval-call in the selected time interval, and the taps are included only W is a way to send the message retrieval call channel search call to the base station in the communication system mdcr, including the steps of transmitting a pilot signal with a transmit power higher than the normal transmission power, channel pilot signal within a predetermined time, and the channel search call, use the normal power transmission, message transmission speed of the channel search of the call, indicating the presence or absence of message retrieval call, by channel high-speed search call before the time interval allocated to a specific mobile station, and send the message retrieval call channel search call during the time intervals allocated to the search call.

6. The method of receiving a message retrieval call for the mobile station in the communication system mdcr in which the mobile station receives the pilot signal from the second transmit power level for a predetermined time, receives the pilot signal from the first transmit power level during the rest time and accepts the message speed channel search call, representing the presence or absence of message retrieval call before the time interval allocated to the mobile station, comprising the steps of applying power to radiochastotnym signal and removing power from the RF receiver to search the stored pilot signal in an inactive mode and perform discovery channel output from the inactive mode to the time during which the message is sent to the high-speed channel search call to receive the message speed channel search call, to transition to an inactive mode and analyzing a received message, speed channel search call to determine the presence or absence of a message retrieval key for the selected time interval, and when there is a message retrieval call, to exit a dormant mode for a selected time interval for processing the received message retrieval call and then transition into an inactive mode, otherwise performing the work in an inactive mode during the selected time interval.

7. The transmitter base station in the communication system mdcr containing at least one generator of the pilot channel signal that includes a first multiplier for multiplying the input signal of the pilot channel signal at the code of the spread spectrum and the first controller gain to generate the pilot signal by multiplying the output signal of the first multiplier to the value of the gain generator channel search call that includes a second multiplier for multiplying the symbol of the channel search during the duration of selected time interval by multiplying the output signal of the second multiplier to the value of the gain, an adder for summing output signals of at least one generator of the pilot channel signal with the output signal generator channel search call, a third multiplier for multiplying the output signal of the adder on the selected code of the spread spectrum and the controller bronirovania to control the time of operation of the first controller gain and the second controller gain, and the controller bronirovania controls the gain value of the first controller gain for the transmission of the pilot signal with the second transmission power for a predetermined time and for transmitting the pilot signal with the first transmit power lower than the transmit power for the rest of the time.

8. The transmitter under item 7, wherein the predetermined time is a time from 1 to 4 characters.

9. The transmitter under item 7, wherein the first multiplier is at least one generator, the pilot signal multiplies the input signal of the pilot channel signal corresponding to different code spread spectrum.

10. The transmitter under item 7, wherein the first controller gain at least one generator, the pilot signal multiplies the output is trichosis gain values determined in accordance with the first power transmission or the second transmission power.

11. The transmitter under item 7, characterized in that it further comprises a generator of a high-speed channel search call that includes a fourth multiplier for multiplying the data symbols of a high-speed channel search call that indicates whether the message retrieval call before the selected time interval, the code of the spread spectrum and the third controller gain for multiplying the output signal of the fourth multiplier gain value for supply to the adder.

12. The receiver of the mobile station in the communication system mdcr containing RF receiver, activated within a predetermined time interval, in which the pilot signal with a higher transmission power than the transmission power for the rest of time and scheduled time frame, and operating in the inactive mode during the rest of the time, except for a predetermined time interval and assigned time window, and the search block, activated at the moment of time when activated by the wireless receiver, to save a received pilot signal, and the search for the pilot signal to perform channel detection, and bends, APN is characterized in that the search block takes the sample of the pilot signal received within a predetermined time interval, stores the sample of the pilot signal, searches for the stored pilot signal during the time corresponding to the inactive mode, and then performs the selection of the sector and the appointment of taps of the receiver in accordance with the search results.

14. The receiver under item 13, wherein the search block contains memory to save the pilot signal and the compressor unit to compress the pilot signal from the output memory.

15. The receiver on p. 12 or 14, characterized in that the compressor unit compresses the pilot signal using the code spread spectrum within the aforementioned predetermined time interval.

16. The receiver under item 14, characterized in that the compressor unit compresses the pilot signal using the at least two spread spectrum codes within the aforementioned predetermined time interval.

17. The receiver under item 16, characterized in that the compressor unit includes a first multiplier for multiplying the pilot signal on the assigned code spread spectrum and receive the compressed signal, at least two second multiplier for multiplying the compressed signal is referred to at least two second tubes, at least two third multiplier for multiplying the output signals mentioned at least two drives on compensatory gain and an adder for summing output signals of at least two-thirds of the multipliers.

 

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