RU2242091C2 - Device and method for gating data transferred over control channel in cdma communication system - Google Patents

Abstract

FIELD: control data transfer over downlink and/or uplink in mobile communication system using base station and/or mobile station.

SUBSTANCE: proposed method affording minimal time required to resynchronize base station, discontinuous transmission of uplink allocated physical control channel, and transfer of transmission control bits for uplink includes following operations. In one of its alternatives base station checks for data designed for transfer to mobile station over downlink. If any data designed for transfer over downlink are absent during predetermine time interval, base station actuates random gating position device to specify gating time step position in random manner, control data are passed in time step of desired position, and control data residing in other positions of time step are cut off. Device for selecting random position specifies gating clock position by computing 'x' value for which purpose frame system number is multiplied by certain definite integer number; prior to gating in plurality of time intervals used for generating downlink signal, it selects n bits starting from position spaced from starting point of scrambling code by 'x' items of code whose period equals one frame and specifies gating clock position of respective group of gating clocks by modulo scaling of chosen n bits, where modulus value in modulo scaling equals number of time steps in group of gating clocks.

EFFECT: enhanced system capacity, reduced noise level, enhanced service life of mobile station storage battery, reduced noise level.

31 cl, 49 dwg

Description

Technical field

The present invention relates generally to a data transmission device and to a method for a CDMA (Code Division Multiple Access) communication system, in particular to a device and method for gating data in accordance with the availability of data for transmission.

State of the art

Conventional CDMA (Code Division Multiple Access (CDMA)) mobile communication systems provide mainly voice transmission services. However, future CDMA mobile communications systems must support the IMT-2000 international mobile communications standard, which can provide both voice and high-speed data services. In particular, the international mobile communication standard IMT-2000 can provide high-quality voice signal transmission service, moving image transmission service, Internet search service, etc. When servicing data transfer, mobile communication systems that comply with the international standard IMT-2000 mobile communication transfer information exchange data via a data transmission channel and transfer control data via a control channel in series or in parallel with the transmission of information exchange data. Here, the term "data exchange data" includes data of a speech signal, image, and packet transmission, and the term "control data" includes control and service data (signaling) related to the transmission of data exchange information.

In a mobile communication system, data transmission is typically characterized in that the transmission of data packets is alternated with long periods of non-transmission. Data packets are referred to as “packets” or “packets” of data. In a conventional mobile communication system, the base station and the mobile station continuously transmit data on the control channel for a predetermined period of time even if there is no data exchange intended for transmission. That is, the base station and the mobile station continuously transmit data on the control channel for even that period of time when there is no information exchange information intended for transmission, despite the fact that it has a harmful effect on limited radio resources, throughput base station capacity, power consumption of the mobile station and interference level. This continuous transmission is carried out to minimize the delay time due to the need to re-establish synchronization when new data exchange information intended for transmission appears. In the absence of any transmitted data within a predetermined period of time, the base station and the mobile station release the data channel and the control channel. In this state, in the event of new data to be transmitted, the base station and the mobile station establish a new data channel and a control channel.

The international standard IMT-2000 of a mobile communication system for providing packet data in addition to transmitting voice signals defines a lot of conditions depending on the distribution of channels and the existence / absence of status information. For example, in section S2.03.99.04 of the 3GPP RAN TS S2 (General Packet Transmission Protocol) document, a transition from one state to another is described in detail for a state of a connection to a cell, a substate of activity in a carrier radio channel (or an ANRK (RBA mode )) and the substate of standby in the carrier radio channel (or ONCR (RBS) mode)

On figa shows the transitions of a mobile communication system from one state to another when it is in a state of having a connection with a cell of a cellular communication. With reference to figa, the state of the connection with the cell contains the status of the channel search call (CPV) (RSN), the state of the random access channel (RACH) / shared channel in the downstream direction (SINC) ( DSCH), the efficiency / direct channel access channel (KDPS) (FACH), and the status of the dedicated channel (VK) (DCH) VK / VK, VK / VK + SINK, VK / SINK + SINK Control (Control Channel).

FIG. 1B shows the sub-presence of activity in a unidirectional radio communication channel (i.e., ANCR mode) and the standby sub-state in a carrier radio channel (i.e., ONCR mode) when in the VK / VK, VK / VK + SINC, VK / SINC + state SINK Ex.

In many cases, data transfer is intermittent, for example, to access the Internet and download files. Therefore, there is a non-transmission time period between packet data sessions. In a conventional data transmission method, a data channel is released for this period of time, or it is constantly stored during this period of time. If a dedicated data channel is released, it takes a long time to ensure that the channel is reconnected, which makes it difficult to provide appropriate service in real time. On the other hand, saving a dedicated data channel leads to unproductive expenditure of channel resources.

A downlink communication channel (or direct communication channel) designed to transmit signals from a base station to a mobile station contains the physical channels indicated below. A description of physical channels that do not fall within the scope of patent claims of the invention will not be given for the purpose of simplification. Physical channels related to the invention include a dedicated physical control channel (hereinafter referred to as DPCCH), which contains pilot pilot symbols used to establish synchronization and channel determination, a dedicated physical data transmission channel (referred to below as VFKPD ( DPDCH)), which serves to exchange information data with a specific mobile station, and a shared downlink (SINC), used to transmit information exchange data to many mobile stations. VFKPD downlink contains information exchange data, and VFKU downlink contains in each measure a pointer to a set of transport formats (hereinafter referred to as USTF (TFCI)), information about the control of transmission power (hereinafter referred to as UMP (TPC)) and the pilot -characters having temporary multiplexing within one cycle. The uplink communication channel (or feedback channel) through which signals are transmitted from the mobile station to the base station also contains a dedicated control channel for the uplink communication channel and a dedicated data channel.

Embodiments of the present invention will be described with reference to that embodiment in which the frame duration is 10 ms (milliseconds) and each frame contains 16 cycles, that is, each cycle has a duration of 0.625 ms. Alternatively, embodiments of the invention will also be described with reference to another embodiment in which the frame duration is 10 ms and each frame contains 15 cycles, that is, each cycle has a duration of 0.667 ms. The cycle duration can be equal to the duration of the power control group (GUM), or different from the duration of the power control group. It is believed here that the power control group (0.625 ms or 0.667 ms) has the same time duration as the clock cycle (0.625 ms or 0.667 ms). The cycle contains a pilot symbol, data exchange information, a pointer to a set of transport formats and a bit of the power control command. The above values are given as an example only.

On figa shows the structure of the cycle, which contains the VFKPD and VFKU downlink. In Fig. 2A, it is shown that despite the fact that the WFKPD is divided into the first information exchange data (Data 1) and the second information exchange data (Data 2), a case is possible in which, according to the types of information exchange data, the first information exchange data does not exist , and there are only the second data of information exchange. On figa BFCI consists of, respectively, USTF, UMP, and a control signal. The table 1 shows the symbols that form the field UFKPD / UFKU downlink, while the number of bits USTF, SAR and pilot bits in each cycle can vary in accordance with the data transfer rate and the coefficient of expansion in the frequency band (EFC) (SF )

Unlike VFKPD and VFKU downlink, separation of VFKPD and VFKU uplink, used to transmit signals from the mobile station to the base station, is carried out by means of independent channel separation codes.

On figb shows the structure of the clock cycle, which contains VFKPD and VFKU uplink, where the position number 211 denotes the structure of the cycle VFKPD, and the position number 213 denotes the structure of the cycle VFCU. In FIG. 2B, the number of USTF, SLM, SAR bits, and pilot bits related to the BFCI may vary depending on the type of service provided (including the type of data exchange information and the diversity of the transmit antennas) or the conditions for switching communications. Tables 2 and 3 show the symbols that form the fields, respectively, VFKPD and VFKU uplink.

Tables 1 to 3 show an example in which there is only one VFKPD, representing a channel of information exchange. However, according to the types of services, a second, third and fourth WFCC may exist. In addition, both the downlink communication channel and the uplink communication channel can contain several VFKPD. Although the description of the base station transmitter and the mobile station transmitter will be given with reference to the case in which there are three VFKPD, there are no restrictions on the number of VFKPD.

FIG. 3A illustrates the construction of a conventional base station transmitter. With reference to FIG. 3A, by means of multipliers 111, 121, 131 and 132, the signals from the output of the formers 101, 102, 103 and 104 of the data are used VFKPD, VFKPD ₁ (or SINK), VFKPD ₂ and VFKPD ₃ , for which encoding was carried out channel and interleaving, on the gains, respectively, G ₁ , G ₂ , G ₃ and G ₄ . Gain factors G ₁ , G ₂ , G ₃ and G ₄ can take different values depending on the situation, for example, on the type of service selected and the transfer of service. In the multiplexer (MP) 112 carry out temporary multiplexing of the signal VFKU and signal VFKPD ₁ in the clock structure shown in figa. The first series-parallel (POS / PAR) (S / P) converter 113 performs the distribution of the output signal of the multiplexer 112 into the common-mode (I) channel and the quadrature (Q) channel. The second and third series-parallel converters 133 and 134 carry out serial-parallel conversion of the signals VFKPD ₂ and VFKPD ₃ and their distribution, respectively, in-phase (I) channel and quadrature (Q) channel.

After serial-parallel conversion, the _multiphase and quadrature channel signals are multiplied by the K _channel1 , K _channel2 and K _channel3 (C _ch1 , C _ch2 , C _ch3 ) _codes of channel formation in the multipliers 114, 122, 135, 136, 137 and 138 to ensure expansion over the frequency band and channel separation. Orthogonal codes are used as channelization codes. The signals of the in-phase and quadrature channels, multiplied by the channel formation codes in the multipliers 114, 122, 135, 136, 137 and 138, are summed by the first and second adders, respectively, 115 and 123. That is, the summation of the signals (I) in the common-mode channel is performed by the first adder 115, and the summation of the signals (Q) in the quadrature channel is performed by the second adder 123. Using the phase shifter 124, the phase of the output signal of the second adder 123 is 90 ° shifted. Using the adder 116, the output signal of the first adder 115 is summed with the output signal of the phase shifter 124, generating a complex signal I + jQ. Using the multiplier 117, the complex signal is scrambled using the _pseudo-noise (PN) (PN) sequence K _cipher (C _scramb ), which is uniquely defined for each base station, and by means of the signal separation device 118, the scrambled signal is divided into the real part and the imaginary part and distributed them into the in-phase (I) channel and into the quadrature (Q) channel. By means of low-pass filters 119 and 125, they filter the signals of the in-phase and quadrature channels, respectively, received from the output of the signal separation device 118, generating signals with a limited frequency bandwidth. In the multipliers 120 and 126, the signals obtained from the output of the filters, respectively, 119 and 125 are multiplied by the carriers cos {2π f _c t) and sin {2π f _c t} to ensure the conversion of signals with increasing frequency and its shift to radio frequency ( RF) range. Using the adder 127, the frequency-shifted common-mode (I) and quadrature (Q) channels are summed.

On figb depicts the design of a conventional transmitter of a mobile station. With reference to FIG. 3B, by means of multipliers 211, 221, 223 and 225, multiplication of the output of the formers 201, 202, 203 and 204 of the data of the BFCI, BFCI ₁ , BFCI ₂ and BCHC ₃ for which channel coding and interleaving was performed is performed by the corresponding channel formation codes, respectively, K _kan1 , K _kan2 , K _kan3 and K _kan4 to provide bandwidth expansion and channel separation. Orthogonal codes are used as channelization codes. In the multipliers 212, 222, 224 and 226, the signals obtained, respectively, at the output of the multipliers 211, 221, 223 and 225 are multiplied by the respective gain factors G ₁ , G ₂ , G ₃ and G ₄ . Gains G ₁ , G ₂ , G ₃ and G ₄ can take different values.

By means of the first adder 213, the output signals of the multipliers 212 and 222 are summed and output as a common-mode channel signal (I), and by the second adder 227, the outputs of the multipliers 224 and 226 are summed and their output as a quadrature channel signal (Q). In the phase shifter 228, a phase shift of the quadrature (Q) channel signal obtained at the output of the second adder 227 is performed by 90 °. In the adder 214, the output signal of the first adder 213 is summed with the output signal of the phase shifter 228, generating a complex signal I + jQ. By means of a multiplier 215, the complex signal is scrambled using the _pseudo-noise (PN) sequence K _cipher (C _scramb ), which is uniquely set for each mobile station, and by means of the signal separation device 229, the scrambled signal is divided into the real part and the imaginary part and distribute them in common mode (I) channel and into quadrature (Q) channel. By means of low-pass filters 216 and 230, they filter the signals of the in-phase and quadrature channels, respectively, received from the output of the signal separation device 229, generating signals with a limited frequency bandwidth. In the multipliers 217 and 231, the signals received at the output of the filters, respectively, 216 and 230 are multiplied by the carriers cos (2π f _c t) and sin {2π f _c t) to ensure the conversion of signals with increasing frequency and its shift to radio frequency ( RF) range. Using the adder 218, the common-mode (I) and quadrature (Q) channels are summed, for which the conversion is performed with increasing frequency.

FIG. 4A shows a conventional method for transmitting a downlink DSCCH and an uplink DSCCH in the ONCH mode when uplink transmission on the DPCCH is stopped. FIG. 4B shows a conventional method for transmitting a downlink DPCCH and an uplink DSCCH in the ONCH mode when the downlink transmission on the DPCCH is stopped.

As shown in FIGS. 4A and 4B, the mobile station continuously transmits a signal on the DSCI of the uplink in the ONCR mode to avoid the process of re-establishing synchronization in the base station. In the case when, in the ONCR mode, information exchange data intended for transmission is not available for a long time, the base station and the mobile station transition to the disconnected state with support for OAI (Radio Resource Management (RRC)). In this state, the transmission of the VFKPD on the uplink is stopped, but the mobile station continues to transmit pilot symbols and SAR bits (transmit power control) (TPC) on the DPCU until the transition is completed, which leads to excessive interference in the uplink communication channel. The presence of interference in the uplink communication channel reduces the throughput of the uplink communication channel.

Despite the fact that the implementation of continuous transmission of the BFCI on the uplink in the conventional method has the advantage that the process of re-establishing synchronization in the base station can be avoided, this leads to an increase in the level of interference in the uplink, which causes a decrease in throughput uplink communication channel. In addition, with regard to the downlink, the continuous transmission of transmit power control (UPC) bits over the uplink causes an increase in the level of interference in the downlink and reduces the throughput of the downlink. Therefore, it is necessary to minimize the time required for the process of re-establishing synchronization in the base station, to minimize the interference caused by the transmission of the BFCI signal on the uplink, and also to minimize the interference caused by the transmission of the transmit power control bits (SAR) in the uplink on the downlink communication.

SUMMARY OF THE INVENTION

Therefore, it is an object of the present invention to provide a device and method for transmitting a pass-through and a cut-off signal through an IFCS if there is no information exchange data (user data or service messages) in the mobile communication system for transmission over a data transmission channel .

Another objective of the present invention is to provide a device and a method of beat-by-bit gating of data transmitted through the BFCI in the form of an irregular sequence if there is no information exchange data in the mobile communication system for a predetermined period of time intended for transmission over a data transmission channel.

Another objective of the present invention is to provide a device and method for implementing a gated transmission procedure in a mobile communication system in the absence of any information exchange data intended for transmission over a data transmission channel for a predetermined period of time and performing gating according to a random law specified a beat in a single element, which is a group of strobe clocks, when performing a transmission procedure with gating.

Another objective of the present invention is to provide a device and method by which, in the absence of a mobile communication system for a predetermined period of time of any information exchanged for transmission over a data transmission channel, the base station performs a gated transmission procedure and performs gating according to the random law of a given measure in a single element, which is a group of strobe measures, when performing the transmission procedure from the strobe roving.

Another objective of the present invention is to provide a device and method for a mobile communication system by which a mobile station, after receiving a message from the base station to perform a gated transmission procedure, performs a gated transmission procedure and randomly gates a predetermined clock cycle in a unit cell representing a group of strobe clocks when performing the transmission procedure with gating.

Another objective of the present invention is to provide a device and method for implementing a gated transmission procedure in a mobile communication system in the absence of any information exchange data intended for transmission over a data transmission channel for a predetermined period of time and performing the gating of a given clock cycle in a single an element representing a group of strobe clocks, which is determined as the corresponding frame number when performing the transmission procedure from the strobe tion.

Another objective of the present invention is to provide a device and method for implementing beat-by-bit gating of data in a mobile telephone communication system in the VFKU by transmitting a pilot symbol of a beat located before that beat, the transmission of which is allowed during gating, and transmitting USTF and SAR clock transmission, the transmission of which is allowed during gating .

And another objective of the present invention is to provide a device and method for controlling the transmission power of control data in a mobile communication system using information about the power control when performing gating of data transmitted through the WFCC.

To achieve the above and other goals, a method for transmitting control data via a downlink communication channel, implemented in the base station of a mobile communication system, is proposed. The base station determines the availability of data intended for transmission to the mobile station on the downlink data channel. In the absence of any data intended for transmission over a downward data channel (VK or SINK), within a predetermined period of time, the base station activates a random position selection device that determines the position of the strobe clock, by gating control data per clock having a position defined in this way, and cutting off control data located in other places. All channel data is systematized in the form of a stream of frames, each frame contains a lot of measures, the measures in each frame are divided into many groups of strobe measures, and the beat position determined by the above method is a measure position selected randomly in each of the groups of strobe measures.

In a preferred embodiment, the random position selector determines the position of the strobe clock by calculating the x value obtained by multiplying the system frame number (SNK) (SFN) of the received signal by a specific integer; selects n bits at a location "x" code elements from the start point of the corresponding Gold code in front of the set of strobe pulses used to generate the signal in the downlink; and determines the position of the strobe clock from the corresponding group of strobe clocks by performing for the selected bits a recount operation modulo equal to the number of ticks forming a group of strobe clocks.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objectives, features and advantages of the present invention will become more apparent from the above detailed description when considered in conjunction with the accompanying drawings in which:

on figa shows the usual pattern of transitions from one state to another for the packet data mode;

FIG. 1B shows a conventional transition pattern between the ANCR mode and the ONCR mode for the VK / VK state (DCH / DCH);

FIG. 2A is a diagram showing a clock structure of a DSCCH and a DSCCH of a downlink in a CDMA communication system; FIG.

FIG. 2B is a diagram showing the clock structure of the VFKPD and VFKU of the uplink communication channel in a CDMA communication system;

3A is a diagram showing a structure of a conventional base station transmitter in a CDMA communication system;

figb is a diagram showing the construction of a conventional transmitter of a mobile station in a communication system mdcr;

FIG. 4A is a diagram showing a conventional method for transmitting an uplink through a DFCI and a DSCCH in the case where the uplink communication in the CDMA communication system is in the ONCR mode is terminated;

FIG. 4B is a diagram showing a conventional method for transmitting a downlink and a BFCI of an uplink communication channel in a UFCI in a case where the downlink transmission of a UCHCH in the CDMA communication system is in the ONCR mode;

FIG. 5A is a diagram showing a construction of a transmitter of a base station performing gating of data transmitted on a BCH, according to an embodiment of the present invention;

FIG. 5B is a diagram showing a construction of a transmitter of a mobile station performing gating of data transmitted by the VFCA, according to an embodiment of the present invention;

FIG. 5B is a diagram showing a construction of a transmitter of a base station equipped with a gating position selector device performing gating of data transmitted by the VFKD according to an embodiment of the present invention;

Fig. 5G is a diagram showing a construction of a transmitter of a mobile station equipped with a gating position selector device that performs gating of data transmitted by the VFKD according to an embodiment of the present invention;

Fig. 6A is a diagram showing a signal transmission method according to a conventional or gated transmission diagram for an uplink DSCCH in an ONCR mode according to an embodiment of the invention;

FIG. 6B is a diagram showing another signal transmission method in accordance with a conventional or gated transmission diagram for an OFCH of the uplink communication channel in the OCHR mode according to an embodiment of the invention;

FIG. 7A is a diagram showing a signal transmission method according to an embodiment of the present invention in the case where uplink communication of the uplink communication channel has been generated by gating the UFCI of the uplink communication channel in ONCR mode;

FIG. 7B is a diagram showing another signal transmission method according to an embodiment of the present invention in the case where uplink communication of the uplink communication channel has been generated by gating the UFCI of the uplink communication channel in ONCR mode;

Fig. 8A is a diagram showing a method for transmitting signals in a downlink and in an uplink according to an embodiment of the present invention in the case where the transmission of the downlink is terminated by the VFKD;

FIG. 8B is a diagram showing a method for transmitting signals in a downlink and in an uplink according to an embodiment of the present invention in the case where transmission of an uplink is terminated by the VFKD;

Fig. 8B is a diagram showing another method for transmitting signals in a downlink and in an uplink according to an embodiment of the present invention in the case where the transmission of the downlink is terminated by the VFKD;

Fig. 8G is a diagram showing another method for transmitting signals in the downlink and in the uplink according to an embodiment of the present invention in the case where the uplink transmission of the uplink communication channel is terminated;

Fig. 9A is a diagram showing a method for transmitting signals in a downlink and in an uplink according to an embodiment of the present invention in the case where the transmission of the downlink (the gated transmission for the DSCF of the downlink) is terminated by the DPCCH;

Fig. 9B is a diagram showing a method for transmitting signals in a downlink and in an uplink according to an embodiment of the present invention when transmission of an uplink communication channel (gated transmission for a downlink DSCF) is terminated by the VFCA;

10A is a diagram showing a construction of a transmitter of a base station according to another embodiment of the present invention;

10B is a diagram showing a construction of a transmitter of a mobile station according to another embodiment of the present invention;

11A is a diagram showing a gated transmission for the downlink DSCCH and the uplink DSCCH according to the first embodiment of the present invention;

11B is a diagram showing a gated transmission for a downlink DSCCH and an uplink DSCCH according to a second embodiment of the present invention;

11B is a diagram showing a gated transmission for a downlink DSCCH and an uplink DSCCH according to a third embodiment of the present invention;

11G is a diagram showing a gated transmission for the downlink DSCCH and the uplink DSCCH according to the fourth embodiment of the present invention;

12A and 12B are patterns showing gated transmission for a downlink DSCCH and an uplink DSCCH according to a fifth embodiment of the present invention;

12B is a diagram showing a gated transmission for a downlink DSCCH and an uplink DSCCH according to a sixth embodiment of the present invention;

12G is a diagram showing a gated transmission for the downlink DSCCH and the uplink DSCCH according to the seventh embodiment of the present invention;

12D is a diagram showing a gated transmission for the downlink DSCCH and the uplink DSCCH according to an eighth embodiment of the present invention;

FIG. 13A is a diagram illustrating a method for determining a position selection bit during downlink transmission of a downlink and a downlink transmission of a downlink channel according to a first embodiment of the present invention;

FIG. 13B is a diagram illustrating a method for determining a position selection bit during downlink transmission of a downlink and a downlink transmission of a downlink channel according to a second embodiment of the present invention;

FIG. 13B is a diagram showing a method for determining a position selection bit during downlink transmission of a downlink and a UFC of a downlink, according to a third embodiment of the present invention;

FIG. 13D is a diagram showing a method for determining a position selection bit during downlink transmission of a downlink and a downlink transmission of a downlink channel according to a fourth embodiment of the present invention;

FIG. 14A is a diagram showing a gated transmission for a downlink DSCCH and an uplink DSCCH according to a ninth embodiment of the present invention; FIG.

FIG. 14B is a diagram showing a gated transmission for a downlink DSCCH and an uplink DSCCH according to a tenth embodiment of the present invention; FIG.

FIG. 14B is a diagram showing a gated transmission for the downlink DSCCH and the uplink DSCCH according to an eleventh embodiment of the present invention; FIG.

FIG. 14D is a diagram showing a gated transmission for the downlink DSCCH and the uplink DSCCH according to the twelfth embodiment of the present invention; FIG.

FIG. 15A is a diagram showing a method of extracting a partial sequence necessary to generate a gated transmission pattern from an uplink scrambling code according to an embodiment of the present invention;

FIG. 15B is a diagram showing a method of extracting an n-bit sequence necessary to generate a gated transmission pattern from a fixed sequence according to an embodiment of the present invention;

FIG. 16 is a diagram showing the construction of a gating position selector device by which a gating position is selected using an uplink scrambling code from FIG. 15A and a fixed sequence from FIG. 15B together with a link frame number (NSC) (CFN) ), according to an embodiment of the present invention;

FIG. 17A is a diagram showing a time dependence of a power control process using a sampling frequency of 1/3 for both the downlink and uplink, according to an embodiment of the present invention;

FIG. 17B is a diagram showing a time dependence of a power control process using a sampling frequency of 1/5 for both the downlink and uplink, according to an embodiment of the present invention;

Fig. 18A is a diagram showing a time dependence of a power control process using a gating frequency of 1/3 for a downlink only according to an embodiment of the present invention; and

Fig. 18B is a diagram showing a time dependence of a power control process using a sampling frequency of 1/5 for a downlink only according to an embodiment of the present invention; and

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT

The above description of preferred embodiments of the present invention is made with reference to the accompanying drawings. In the following description, a detailed description of known functions or constructions is not given, since it would complicate the understanding of the subject matter of the invention due to the presence of unnecessary details.

As used herein, the term “conventional transmission” refers to the continuous transmission of USTF, SAR, and pilot symbols contained in a downlink or uplink DSCI. In addition, the term “gated transmission” refers to the transmission of USTF, SAR, and pilot symbols contained only in a particular power control group (or cycle) of a downlink or uplink DSCI, in accordance with a predetermined sequence (pattern), or refers to the transmission of the signal of the IFCS, the transmission of which is allowed during gating, only if there is a pilot symbol of the clock located before that measure, the transmission of which is allowed during gating, as well as the transmission of USTF and UMP clock, skipping whose resolution is allowed during gating, in accordance with a predetermined sequence (pattern) of signal transmission during gating. Information, the transmission of which is terminated in the downlink channel VFKU during transmission with gating, may contain either all USTFs, SPS, and pilot symbols from one power control group (or clock cycle), or some of them. In addition, the term “gating position (s) selection” as used herein refers to the operation of selecting a location (s) of a beat for transmitting data on the BCH during transmission with gating, and the term “gating location (position)” refers to a beat selected for transmitting control data. In addition, the term “control data” as used herein refers to a signal of the IFCS, and the term “information exchange data” refers to overhead data and / or user data, packet transmission of which is performed between the base station and the mobile station. The "control data" includes USTF, SIA, SLD (feedback indicator (FBI)) and a pilot symbol. Despite the fact that the description of the invention is described with reference to an example of gating the data transmitted through the BFCI, the transmission method with gating according to the present invention can also be applied to the gating of control data in any other channel through which periodic transmission of control data is carried out.

The transmission operation with gating, which will be described below, can be used both in the case when a single transmission element with gating is equal to a single clock, and in the case when a single transmission element with gating is not equal to a single clock. In the case where the unit transmission element with gating is not equal to a single clock cycle, the preferred option is that in which the gating of the SAR, USTF and the pilot symbol is carried out separately. That is, the n-th pilot symbol and the (n + 1) -th USF and UMP are set as a single transmission element with gating.

In addition, since the efficiency of operation at the beginning of the frame is very important, in preferred embodiments of the present invention, SAR data providing power control of the first clock of the next frame is placed in the last clock of one frame. That is, the UMP bits for the downlink DSCI and the uplink DSCCH are placed in the last cycle of the nth frame, and the power control of the first clock cycle of the (n + 1) nt frame is performed using the UMP bits located in the last cycle of the nth frame frame.

In an example embodiment of the present invention, when the mobile communication system performs gated transmission, the base station and the mobile station determine the positions of the strobe clocks either according to a predetermined conventional transmission pattern or according to a transmission pattern with an irregular structure, which is determined by assigning the specified clock strokes to the gating positions groups of strobe clocks using the system frame number (SNK) and the link frame number (NSC). In addition, in a mobile communication system, the VFKPD and one frame of the VFKPD may consist of multiple clock cycles. In various embodiments of the present invention, one frame may contain 15 or 16 measures, and a description of the invention will be given for both cases. The following description of a transmission operation with a gating performed using a conventional transmission pattern is described with reference to an embodiment in which one frame contains 16 clocks, and a description of a transmission with gating performed using a transmission pattern having an irregular structure is described with reference for an option in which one frame contains 15 measures.

The main attention in the description of the invention is focused on the process of performing transmission with gating with frequencies of 1/3 and 1/5 on the DSCI of the downlink and the DSCCH of the uplink from FIGS. 2A and 2B. Gating locations can also be performed according to random distribution gating patterns shown in FIGS. 15A, 15B and 16.

The following is a description of the hardware design according to an embodiment of the present invention.

FIG. 5A shows a construction of a transmitter of a base station according to an embodiment of the present invention. The transmitter of the base station differs from the conventional transmitter of FIG. 3A in that for the downlink DSCCH, the output signal of the multiplier 111 is gated by a gated transmission controller 141. That is, if there is no generation of information exchange data for transmission over the VFKPD of the downlink for a predetermined period of time, or if there is no reception of the uplink information exchange of the upstream communication channel over VFKPD for a predetermined period of time, the gating controller 141 performs transmission of USTF and UMP bits of the next cycle with gating according to the pilot symbol of one cycle of the downlink of the WFKU in the form of a template coordinated with the mobile station antsia. In addition, in the ONCR mode, in the absence of information exchange data transmitted via the downlink VFKPD and the uplink VFKPD, the gated transmission controller 141 carries out gated transmission of one power control group (or one full cycle) including pilot symbols , the USTF and UMP bits for the downlink DSCI located in the power control group (or in a time cycle) matched with the mobile station.

While gating the downlink and uplink channel signals of the UFCI, the gating pattern in the downlink is identical to the gating pattern in the uplink, but there may be a shift (offset) between them to provide effective power control. The shift can be set as a system parameter, or information about it can be transmitted by means of a message indicating the initial moment of transmission with gating. After there is no generation of information exchange data intended for transmission over the VFKPD for a predetermined period of time, a message is transmitted from the base station to the mobile station indicating the initial moment of gating in order to indicate the starting point of transmission with gating and the frequency of gating. The transmission of such a message may also be carried out from the mobile station to the base station. In addition, the base station may decide to issue a message indicating the initial gating moment in response to a gating request received from the mobile station, and transmit the issued message to the mobile station.

The gated transmission controller 141 can gate both the clock data in the BCH and the control data in a plurality of clock cycles. One cycle of the VFKU contains such control data as, for example, a pilot symbol, USTF and UMP (in the mobile station, it additionally contains SLM). When transmitting with gating, the gating transmission controller 141 can gate all control data contained in a clock located at the gating position. In an alternative method, the gated transmission controller 141 can perform gating of a pilot symbol of the duration of the nth clock located in front of the (n + 1) th clock located at the gate, and UMP and USTF (n + 1) clock bits. A description of this embodiment of the present invention is given below with reference to the latter method.

In addition, the transmission controller 141 with gating places the SPS bits in the last clock cycle of one frame, and these SPS bits serve to control the power of the first clock cycle of the next frame, which ensures the proper functioning of the initial part of the next frame. That is, the UMP bits for the downlink DSCI and the uplink DSCCH are in the last cycle of the nth frame, and the power of the first clock cycle of the (n + 1) nt frame is performed using the UMP bits in the last cycle of the nth frame frame.

In the case when the mobile station transmits with gating, and the base station does not transmit with gating, the transmitter of the base station determines the SAR bit (transmit power control) by measuring the signal in one cycle of the BFCI, intermittent transmission of which is made from the mobile station, and then transmits this specific SAR bit in each clock cycle until the base station determines a new SAR bit by measuring the signal in a different clock cycle of the DSCF of the uplink communication channel.

FIG. 5B illustrates a transmitter structure of a mobile station according to an embodiment of the present invention. The transmitter of the mobile station differs from the conventional transmitter of FIG. 3B in that it is equipped with a gated transmission controller 241, by means of which the transmission is gated on the DSCF of the uplink communication channel. That is, if there is no generation of information exchange data intended for transmission via upstream and downstream data transmission channels (VFKPD or SINK) for a predetermined period of time or if there is no generation of information exchange data intended for transmission via VFKPD or an uplink , for a predetermined period of time, the gating transmission controller 241 performs gating transmission of one power control group (or one full cycle), including the number of pilot symbols, USTF, SLD and UMP bits for the uplink communication channel, located in the power control group (or in tact), coordinated with the mobile station.

The following is a description of the structure of a signal transmitted by a base station and a mobile station according to an embodiment of the present invention.

FIG. 6A shows a method for transmitting an uplink DSCI signal according to a conventional transmission pattern or a gated transmission if there is no data to be transmitted over the CFCI for a predetermined period of time, according to an embodiment of the present invention. 6A, reference numerals 301, 302, 303, and 304 indicate different gating frequencies in accordance with a duty cycle (hereinafter referred to as SC). As used herein, the terms "duty cycle" (or "short circuit") and "sampling frequency" are equivalent. Number 301 denotes the usual method of transmitting a DSCF of an uplink without gating (KZ = 1), and number 302 denotes a method of regularly transmitting every second power control group (or clock cycle) at KZ = 1/2 (only 1/2 of all clock cycles are transmitted in one frame). Number 303 denotes a method for regularly transmitting each measure (3rd, 7th, 11th and 15th measures) at KZ = 1/4 (only 1/4 of all measures located in one frame are transmitted). Number 304 designates a method for regularly transmitting every eighth measure (7th and 15th measures) at KZ = 1/8 (only 1/8 of all measures in one frame are transmitted).

In the embodiment depicted in FIG. 6A with SC = 1/2 and 1/4, despite the fact that the transmission controller 241 with gating in the mobile station performs regular gating of the BFCI clocks of the uplink, it is also possible to gating arbitrary clocks according to relevant short circuit. That is, with KZ = 1/2, instead of regularly transmitting every second measure, it is also possible to continuously gate arbitrary neighboring measures in accordance with a gate pattern having an irregular structure. In addition, with KZ = 1/2, there is also the possibility of continuously transmitting half of all measures in the second half of the frame (measures from 8th to 15th). With SC = 1/4, there is also the possibility of continuously transmitting 1/4 of all measures, starting from the point corresponding to 3/4 of the frame (that is, measures from 12th to 15th). With SC = 1/8, there is also the possibility of continuously transmitting 1/8 of all measures, starting from the point corresponding to 7/8 of the frame (that is, measures from the 14th to the 15th).

The gating frequency can be changed during transmission with gating. For this, the mobile station and the base station must have information about when and what kind of sampling frequency they should use, so it is necessary to transmit the corresponding message. The gating frequency is set at the beginning of the transmission with gating, and in the preferred embodiment, it is not changed during transmission with gating.

FIG. 6B shows a signal transmission method according to a conventional or gated transmission pattern for an uplink DSCCH according to another embodiment of the present invention. In FIG. 6B, the numbers 305, 306, and 307 indicate different gating frequencies in accordance with the short-circuit duty ratio. Number 305 indicates the method of transmitting two consecutive measures located at regular intervals (measures 2 — 3, 6 — 7, 10 — 11, and 14 — 15) at KZ = 1/2 (transmit only 1/2 of all measures in one frame). Number 306 designates the method of transmitting two consecutive measures located at regular intervals (measures 6th - 7th and 14th - 15th) with short circuit = 1/4 (only 1/4 of all measures located in one frame). Number 307 designates the method of transmitting two consecutive measures located at regular intervals (measures 14th to 15th) at short circuit = 1/8 (only 1/8 of all measures in one frame are transmitted).

In the embodiment of FIG. 6B with SC = 1/2 and 1/4, despite the fact that the transmission controller 241 with gating in the mobile station performs regular gating of the BFCF clocks of the uplink, it is also possible to gating arbitrary clocks from all groups power control according to the corresponding short circuit. That is, with KZ = 1/2, instead of regularly transmitting every second pair of consecutive clock cycles, it is also possible to continuously gate 4 consecutive clock cycles (for example, bars 2 through 5) in accordance with a gating pattern that has an irregular structure.

The following is a description of the signaling diagrams for the base station and the mobile station according to another embodiment in which the gate strobing position is selected such that the signal must be transmitted in one of three consecutive clock cycles or five consecutive clock cycles. A description of an embodiment is provided for a sampling frequency of 1/3 or 1/5 for that embodiment when one frame contains 15 clock cycles (i.e., power control groups).

FIG. 5B shows a structure of a transmitter of a base station equipped with a gating position selector device according to an embodiment of the present invention. The difference of this base station transmitter from the transmitter of FIG. 5A is that the selection of the positions of the transmission clocks for the downlink DSCI is performed by the gating position selector 142.

Fig. 5G shows the structure of a transmitter of a mobile station equipped with a gating position selector device according to an embodiment of the present invention. The difference of this transmitter of the mobile station from the transmitter of FIG. 5B is that the selection of the positions of the transmission clocks for the UFCI of the uplink communication channel is carried out by the gating position selection device 242.

Irregular ordering of strobe strobe positions is performed to prevent unwanted effects associated with the influence of electromagnetic waves, which are caused by the power of regularly transmitted signals. In this embodiment, a scrambling code is used to irregularly gate the transmitted signals.

One way to select the gate positions of the strobe clock is to use the system frame number (SNK) of the signal in the downlink immediately before transmitting the signal through the uplink and the scrambling code, which is generated to descramble the received signal of the downlink in the mobile station. The mobile station reads the code bits at the specific position of the scrambling code using the SNK of the downlink signal and determines the strobe clocks using the read value. Since the transmission of SNK values from 0 to 71 is performed continuously on the broadcast channel from the base station, the mobile station can read the SNK by receiving data on the broadcast channel. As the scrambling code, a secondary scrambling code or a primary scrambling code may be used. In the event that the base station knows the position of the gating performed by the mobile station, it can accurately receive data whose transmission is allowed by the mobile station during gating. Therefore, a preferred embodiment is one in which the gating position must be agreed between the transmitting side and the receiving side. To ensure such consistency, in this embodiment, a random scrambling code is used, equally used by the base station and the mobile station, and SNK to reduce repeatability, thereby determining the position of the strobe clock.

The strobing position controller 242 (Fig. 5G) of the mobile station determines the position of the beat, the transmission of which is allowed during gating, by using the Gold code, which is the real part of the scrambling code generated inside the station to descramble the received signal and the SNK of the received signal. With SC = 1/3, the gate position controller 242 selects one measure in an arbitrary position of a set of 3 measures (a group of strobe steps), and when SC = 1/5, the gate 242 selects one clock in an arbitrary position of a set of 5 These measures (groups of strobe measures). The term "gating duration" or "group of strobe strokes" here refers to the duration of 3 cycles for KZ = 1/3 and 5 cycles for KZ = 1/5.

According to an embodiment of the present invention, the first method for randomly determining a measure in a single element, which is a group of strobe measures, the transmission of which is allowed during gating, according to an embodiment of the present invention. The drawings of FIGS. 13A, 13B, 14A and 14B correspond to this method.

1. The system frame number (SNK), taking values from 0 to 71, of the signal received immediately before transmission, is multiplied by an integer in the range from 1 to 35. Assume that the result of the calculation is 'x' (0≤ x≤ 2485 )

2a. For KZ = 1/3, one bit is selected from the real part of the scrambling code located at the position that is located at the x element of the code from the boundary of the gating group, as shown in figa. The selected one bit can be used to determine the position of the strobe clock in the next group of strobe clocks. That is, the position of the strobe measure in the current group of strobe measures can be determined by one bit selected in the previous group of strobe measures.

2b. For SC = 1/5, two bits are selected from the real part of the scrambling code located at the position that is located at the x element of the code from the border of the gating group, as shown in figv.

3a. For SC = 1/3, the position of the strobe clock intended for transmission is determined using one selected bit. Since only one bit is used, out of the three possible clock positions for transmission, a random selection of positions is performed from two clock periods determined by matching.

3b. For SC = 1/5, the position of the transmitted clock is determined using two selected bits. Since they use two bits, out of the five possible clock positions for transmission, a random selection of positions is carried out from four clock positions determined by matching.

4. When changing the SNK, the above procedure is performed again, starting from step 1, for the new value. In this case, the integer value (in the range from 1 to 35) that was used when performing step 1 is maintained.

As for the positions of the strobe strokes of the transmission on the downlink, the gating pattern of the downlink (or the transmission pattern with gating on the downlink) is equivalent to the gating pattern of the uplink. However, there may be a special shift between clock cycles, the transmission of which is allowed during gating, in the uplink communication channel and in the downward communication channel to ensure effective power control. This shift is set as a system parameter. In addition, the downlink gating pattern can be determined using predetermined positions regardless of the uplink gating pattern.

On figa shows a method of selecting the positions of the gating in the groups of strobe strokes for KZ = 1/3. The gate position controller 242 in the mobile station receives the scrambling code and SNK of the downlink signal and selects one bit from the real part of the scrambling code. The selected one bit is used to determine the measure allowing transmission at gating of the next group of strobe measures. In other words, the position of the measure allowing transmission through gating in the current group of strobe measures is determined by one bit selected in the previous group of strobe measures. In general, the time difference in units of measures between the current group of strobe measures and the group of strobe measures from which one bit is selected can be greater than one. In this case, the base station transmits the strobe clock of the downlink in that position which is a predetermined number of clocks from the position of the strobe clock received in the uplink.

On figb shows a method of selecting the positions of the gating in the groups of strobe strokes for KZ = 1/5. The gate position controller 242 in the mobile station receives the scrambling code and the SNK of the downlink signal, and selects two bits from the real part of the scrambling code. The selected two bits are used to determine the measure that permits transmission at gating, the next group of strobe measures. In other words, the position of the measure allowing transmission during gating in the current group of strobe measures is determined by the two bits selected in the previous group of strobe measures. In general, the time difference in units of clocks between the current group of strobe clocks and the group of strobe clocks from which two bits are selected may be greater than one. At the same time, the base station transmits the gating clock cycle of the downlink channel, the transmission channel in which transmission is allowed, in a place that is a predetermined number of clocks away from the position of the gating cycle, in which transmission allowed in the upstream communication channel is allowed.

When determining the position of the real part of the scrambling code, in addition to the SNK, one can also use the channel formation code number for the downlink signal, which is uniquely set for each mobile station. The channelization code for the downlink signal is used to prevent the transmission of the strobe clocks in the downlink signals at the same time for different mobile stations.

On figv, 13G, 14B and 14G shows another way to select a strobe clock from the group of strobe clocks. In this method, the gating positions are determined by performing the conversion operation modulo 3 or modulo 5 for the decimal value of N bits from a specific area of the real part of the scrambling code.

The second method for randomly selecting an arbitrary measure in a single element representing a group of strobe measures according to this embodiment of the present invention is performed in the following order.

1. The system frame number (SNK), taking values from 0 to 71, of the signal received immediately before transmission, is multiplied by an integer in the range from 1 to 35. Assume that the result of the calculation is 'x' (0≤ x≤ 2485 )

2a. For SC = 1/3, N bits are selected from the real part of the scrambling code located at the position that is located at the “x” code elements from the boundary of the group of strobe clocks, as shown in FIG. 13B. The selected N bits can be used to determine the position of the strobe clock in the next group of strobe clocks. That is, the position of the strobe clock in the current group of strobe clocks can be determined from the N bits selected in the previous group of strobe clocks.

2b. For KZ = 1/5, N bits are selected from the real part of the scrambling code located at the position that is located at the “x” code elements from the boundary of the group of strobe clocks, as shown in FIG. The selected N bits can be used to determine the position of the strobe clock in the next group of strobe clocks. That is, the position of the strobe clock in the current group of strobe clocks can be determined from the N bits selected in the previous group of strobe clocks.

3a. For SC = 1/3, the position of the strobe clock intended for transmission is determined using the value obtained by performing the decoding operation of the decimal value corresponding to the selected N bits, modulo 3, since the value obtained as a result of the recalculation operation of modulo 3 is either 0 either 1 or 2, then each of these values determines the position of an arbitrary measure in the time interval corresponding to the duration of the strobe (or in the group of strobe measures).

3b. For SC = 1/5, the position of the clock cycle intended for transmission is determined using the value obtained by performing the decimal conversion operation corresponding to the selected N bits, modulo 5. Since the value obtained as a result of the conversion operation modulo 3 is either 0 , or 1, or 2, or 3, or 4, or 5, then each of these values determines the position of an arbitrary measure in the group of strobe measures.

4. When changing the SNK, the above procedure is performed again, starting from step 1, for the new shift value "x". In this case, the integer value (in the range from 1 to 35) that was used when performing step 1 is maintained.

In the method of selecting the position of the strobe clock, the selection of the position of the strobe in the group of strobe clocks is performed using the real part of the scrambling code and SNK, which takes values in the range from 0 to 71. Therefore, the pattern of strobe clocks in which transmission is allowed has a period of 720 ms (milliseconds). In order to obtain a gating pattern period longer than 720 ms, it is possible to change the value of "x" whenever the SNK becomes equal to a specific value.

On figv shows a method of selecting the positions of the gating in the groups of strobe strokes for KZ = 1/3. The gate position controller 242 in the mobile station receives the scrambling code and the SNK of the downlink signal, and selects N bits from the real part of the scrambling code. The selected one bit is used to determine the gating measure of the next group of gating measures. In other words, the position of the strobe clock in the current group of strobe clocks is determined based on the result of the counting operation of N bits modulo 3 N bits selected in the previous group of strobe clocks. In general, the time difference in units of measures between the current group of strobe measures and the group of strobe measures from which N bits are selected may be greater than one. In this case, the base station transmits the gating clock cycle of the downlink channel in the position that is a predetermined number of clocks away from the gating clock position received in the uplink channel.

On figg shows a method of selecting the positions of the gating in the group of strobe strokes for KZ = 1/5. The gate position controller 242 in the mobile station receives the scrambling code and the SNK of the downlink signal, and selects N bits from the real part of the scrambling code. The selected N bits are used to determine the gating measure of the next group of gating measures. In other words, the position of the strobe clock in the current group of strobe clocks is determined based on the result of the conversion operation modulo 5 N bits selected in the previous group of strobe clocks. In general, the time difference in units of clocks between the current group of strobe clocks and the group of strobe clocks from which N bits are selected may be greater than one. In this case, the base station transmits the gating clock cycle of the downlink channel in the position that is a predetermined number of clocks away from the gating clock position received in the uplink channel.

Irregular ordering of strobe strobe positions is performed to prevent unwanted effects associated with the influence of electromagnetic waves, which are caused by the power of regularly transmitted signals. To provide random gating of the transmitted signals, this embodiment is an example of using an arbitrary number to determine an uplink / downlink frame together with an uplink scrambling code or fixed sequence. An arbitrary number for determining the frame of the uplink / downlink can be an SNK or NSC (link frame number), and it can also be an arbitrary system parameter used to determine the frame of the uplink / downlink. In the second method of gating a randomly selected beat from a group of strobe clocks according to this embodiment of the present invention, random gating of a randomly selected beat is performed using the NSC. That is, in the second random gating method according to this embodiment of the present invention, an NSC is used as an arbitrary number to determine an uplink / downlink frame, and the NSC is a value equally used by each base station communicating with a particular mobile station (or with subscriber equipment). In addition, the NSC is indicated by 8 bits, and it is a frame number with a repetition period equal to 256 (from 0 to 255).

On figa shows a method of extracting a partial sequence necessary when generating a gating pattern based on the scrambling code of the uplink communication channel. The scrambling code of the uplink signal is used to recognize subscriber equipment (AA) (UE) in a mobile communication system and is divided into a long scrambling code and a short scrambling code. The long scrambling code has a length of 33554432 bits, and it is used for a signal consisting of one frame, which is transmitted from subscriber equipment using a code with a length of only 38400 bits, consisting of bits of the full length from 0 to 38399th, used for recognition subscriber equipment. The short scrambling code has a length of 256 bits, and it is repeated 150 times within the same frame transmitted from the subscriber equipment. The short scrambling code is a scrambling code of a user identifier that is used when the base station includes, for example, a jamming device, which is a separate device.

With reference to FIG. 15A, beat 1511 is the first beat of frame 1501 and has a beat number of 0. For the scrambling code used for beat 1511, bits 0 through 2559 are used in the long scrambling code, and the short code scrambling repeats the scrambling code from the 0th to the 255th bit 10 times. In the description below, both scrambling codes are referred to as a scrambling code: a long scrambling code and a short scrambling code. In this invention, both a long scrambling code and a short scrambling code can be used. On figa, the position number 1512 indicates the 0th bit of the scrambling code of the first clock 1511, the position number 1513 indicates the 1st bit of the scrambling code, and the position number 1514 indicates the 2559th bit of the scrambling code.

On figa position number 1501 denotes the duration of one frame. Frame 1501 contains 15 measures: from the 0th measure 1511 to the 14th measure 1519. Below, a description will be given of a method for selecting the position of a strobe measure from a group of strobe measures in frame 1501.

Frame 1501 is divided into groups of strobe measures, each of which according to the short circuit consists of 3 or 5 measures. That is, for KZ = 1/3 frame 1501 is divided into 5 groups of strobe measures, each of which contains 5 measures (that is, group No. 0 of strobe measures contains measures from 0 to 2, group No. 1 strobe measures contains measures from the 3rd to 5th, group No. 2 of strobe measures contains measures from the 6th to 8th, group No. 3 of strobe measures contains the measures from 9th to 11th st, and group No. 4 of strobe measures contains measures from the 12th to the 14th). For KZ = 1/5, frame 1501 is divided into 3 groups of strobe measures, each of which contains 5 measures (that is, group No. 0 of strobe measures contains measures from 0 to 4, group No. 1 of strobe measures contains measures from 5th to 9th, group No. 2 of strobe measures contains measures from 10th to 14th).

On figa frame 1501 is divided into 3 or 5 groups of strobe strokes in accordance with the short circuit, and each group of strobe strokes has a shift, the value of which is equal to the number of the group of strobe strokes for the corresponding groups of strobe strokes. For KZ = 1/3, the value of the shift of the strobe measure in group No. 0 is 0, the value of the shift of the strobe measure in group No. 1 is 1, the value of the shift of the strobe measure in group No. 2 is 2, the value of the shift of the strobe measure in group No. 3 is 3, and the value of the shift of the strobe measure in group No. 4 is 4. For KZ = 1/5, the value of the shift of the strobe measure in group No. 0 is 0, the value of the shift of the strobe measure in group No. 1 is 1, and the value of the shift of the strobe measure in group No. 2 is 2. The following is a description of how to use the shift values.

15A, n extracted bits are denoted by bits 1551 through 1554. Therefore, the selection of n bits from the 1551st to 1554th bits is performed from the 0th bit 1512 to the 2559th bit 1514 of the scrambling code used for clock cycle 1511, according to the prescribed mutual coordination between the base station and the mobile station. Here 'n' is a positive number that is a multiple of 8, which can be given arbitrarily. The method for selecting n bits, from bit 1551 to bit 1554, from the scrambling code used for clock cycle 1511, is as follows. To make a decision on choosing a strobe clock from the current group of strobe clocks, n bits are used from the scrambling code used for the previous group of strobe clocks with a shift, and the first bit of the scrambling code of the previous group of strobe strokes is shifted.

(1) For KZ = 1/3, the frame is divided into 5 groups of strobe clocks, from group No. 0 to group No. 4. As n bits used to select the gate position in group No. 0 of strobe clocks, n bits are used, starting from 30724 -th bit of the scrambling code of the previous frame. Here, the 30724th bit is a bit that is shifted by 4 relative to the border of the strobe beat of group No. 4 from the previous frame. That is, this bit is the 30720th bit, which is the initial bit of the scrambling code used for group No. 4 of strobe clock cycles of the previous frame. And the initial bit of a set of n bits (which will be used for group No. 0 of strobe clocks in the current frame) is the 30724th bit, which is determined by using the shift value (= 4) of group No. 4 of strobe clocks of the previous frame for group No. 0 of strobe clocks . Therefore, the initial bit of the selection of the scrambling code used when selecting the gating position for group No. 0 of strobe clocks is the 30724th bit.

Similarly, since the shift value for group No. 0 of strobe clocks is 0, then as n bits used to select the position of the strobe in group No. 1 of strobe clocks, n bits are sequentially extracted starting from the 0th bit of the scrambling code of group No. 0 gating measures. As n bits used to select a gating position in group No. 2 of strobe clocks, n bits are sequentially extracted starting from the 7681th bit of the scrambling code using the shift value (i.e., shift value = 1) corresponding to group No. 1 of the strobe beats. As n bits used to select the gating position in group No. 3 of strobe clocks, n bits are sequentially extracted starting from the 15362th bit of the scrambling code using the shift value (i.e., shift value = 2) corresponding to group No. 2 of the strobe beats. As the n bits used to select the gating position in group No. 4 of strobe clocks, n bits are sequentially extracted starting from the 23043rd bit of the scrambling code using the shift value (i.e., shift value = 3) corresponding to group No. 3 of the strobe beats. As described above, as n bits used to select a gating position in group 0 of strobe clocks, n bits are sequentially extracted starting from the 30724th bit of the scrambling code using a shift value (i.e., shift value = 4) corresponding to group No. 4 strobe measures from the previous frame. In other words, the selection of n bits used to determine the position of the strobe clock in the group No. (p + 1) of strobe clocks is carried out starting from bit number y, where y = {the 1st bit of the group number r of strobe clocks} + {group shift No. p gating measures}, except for the operation of determining the position of the gating measure in group No. 0 of gating measures. When determining the position of the strobe measure in group No. 0 of strobe measures, the selection of n bits used to determine the position of the strobe measure in group No. 0 of strobe measures is performed starting from bit number y, where y = {the 1st bit of group No. 4 of strobe measures of the previous frame } + {shift of group No. 4 of strobe clocks}.

In other words, the selection of n bits used to determine the position of the strobe clock in the group No. (p + 1) of strobe clocks is carried out starting from bit number y, where y = {the 1st bit of the group number r of strobe clocks} + {group shift No. p gating measures}, except for the operation of determining the position of the gating measure in group No. 0 of gating measures. When determining the position of the strobe measure in group No. 0 of strobe measures, the selection of n bits used to determine the position of the strobe measure in group No. 0 of strobe measures is performed starting from bit number y, where y = {the 1st bit of group No. 4 of strobe measures of the previous frame } + {shift of group No. 4 of strobe clocks}.

(2) For KZ = 1/5, the frame is divided into 3 groups of strobe strokes, from group No. 0 of strobe strokes to group No. 2 of strobe strokes. As n bits used to select the position of the gating in the group of No. 0 strobe clocks, sequential extraction of n bits is performed, starting with the 25602nd bit of the scrambling code of the previous frame. As n bits used to select the gating position in the group of No. 1 strobe clocks, sequential extraction of n bits is performed, starting from the 0th bit of the scrambling code. As n bits used to select the gating position in the group of No. 2 strobe clocks, sequential extraction of n bits is performed, starting from the 12801th bit of the scrambling code.

On figb depicts a template for explaining the third method of performing random gating according to a variant implementation of the present invention. This method is carried out using NSC. On figb shows a method of extracting a sequence of n bits necessary to generate a gating pattern from a fixed sequence A.

With reference to FIG. 15B, sequences of n bits (of 16 bits) are used in each of the strobe clock groups to determine a transmission pattern having an irregular structure. Sequences of n bits (of 16 bits) are obtained by selecting with a shift from a fixed sequence (i.e., A = a0, a1, a2 ... A18 = 1011010011011101001) using shift j (0, 1, 2, 3) . For KZ = 1/5, A ₀ and A ₁ can be used. A ₀ consists of 16 bits (from a0 to a15) and A ₁ consists of 16 bits (and a1 to a16). For KZ = 1/3, A ₀ , A ₁ , A ₂ and A ₃ can be used. In this case, A ₀ consists of elements a0 through a15 extracted from a fixed sequence A with a shift of 0, A ₁ consists of elements a1 through a16 extracted from a fixed sequence A with a shift of 1, A ₂ consists of elements a2 through a17 extracted from a fixed sequence A with a shift of 2, and A3 consists of elements a3 through a18 extracted from a fixed sequence A with a shift of 3. A _{0 is} used to calculate the strobe beat of the 0th group of strobe strokes, and A _{1 is} used to calculate the strobe 1st group tact s strobe cycles. A ₂ and A ₃ are used to calculate the strobe beat of the 2nd and 3rd groups of strobe strokes with a short = 1/3. Therefore, A ₀ and A ₁ or A ₀ -A _{3 are} periodically used in each frame. On figb shows a sequence of n bits, which is obtained by applying a shift to a fixed sequence, where the shift value is equal to the number of the current group of strobe clocks. Since the selection of the sequence intended for use in each group of strobe strokes is carried out by applying a shift to a fixed sequence A, then A cannot be used as the sequences below.

1. The case in which the sequences selected after applying the shift become the same.

Ex) A = 101010101010101010101010

Shift 0: A ₀ = 101010101010101010101010

Shift 1: A _{1 =} 010101010101010101010101

Shift 2: A ₂ = 101010101010101010101010

2. A sequence consisting of only ones or only zeros.

Ex) A = 00000000000000000000000

Ex) A = 1111111111111111111111111

FIG. 16 shows an example of a hardware implementation diagram of a gating position selection operation using n bits used in a gating clock position selection method from FIGS. 15A and 15B. On Fig depicts a device that implements a method of selecting the position of the strobe clock by using the scrambling code of the upward communication channel shown in figa, together with the NSC or by using the fixed sequence shown in figv, together with the NSC.

With reference to FIG. 16, n bits of a scrambling code selected by the method described with reference to FIG. 15A are stored in the memory device 1601, or n bits (i.e., 16 bits) from a fixed sequence A obtained according to the selection method are stored, described with reference to figb.

In the memory device 1603, NSCs are repeatedly stored, each of which has a length of n bits (16 bits), which are used in the same way in the subscriber equipment and in the base station in communication with the subscriber equipment. The NSC is repeatedly increased from 0 to 255, which can be displayed using 8 bits, and its storage in the memory device 1603 after repeating this procedure n / 8 times so that the length of the bit combination stored in the memory device 1603 is equal to value of 'n'. Bit 1631 stored in the memory device 1603 is the 0th bit, which is the MSB of the ISK, and bit 1638 is the 7th bit, which is the LSB (LSB) of the LSB NSC. Bit 1639 stored in the memory device 1603 is the SSC of the NSC and has the same meaning as bit 1631, and bit 163n is the MSB of the NSC and has the same meaning as bit 1638. In the memory device 1603 of FIG. .16 the placement arrangements for the NWB and the MSS of the NSC are subject to change.

The multiplier 1604 of FIG. 16 contains n exclusive OR devices (XORs) 1641-164n. The multiplier 1604 performs an exclusive-OR operation on n bits stored in the memory device 1601 and on the NSC bits stored in the memory device 1603 and provides the results of the operation to the decimal converter 1605. That is, n operation devices 1641-164n perform the operation exclusive OR "over bits 1611-161n received from the output of memory device 1601, and over bits 1631-163n received from the output of memory device 1603.

The decimal converter 1605 converts the results of the operation performed by the multiplier 1604 into a decimal number. That is, the decimal converter 1605 contains memory devices 1651-165n for storing n values of the results of operations received from the output of the exclusive-OR devices 1641-164n of the multiplier 1604, and converts the values of the results of operations stored in them into decimal number. The decimal value is set in accordance with the value of 'n'. The decimal number obtained at the output of the decimal converter 1605 is supplied to the module 1607 for performing the modalization operation. At the output of the device 1607, the conversion operation modulo obtains a value depending on the value of the short circuit. For short circuit = 1/3 at the output of the device 1607 for performing the operation of modulo translation, one of the following values is obtained: 0, 1 and 2. For short circuit = 1/5 at the output of the device 1607 for performing the operation of modulo conversion one of the following values is obtained: 0, 1, 2, 3, and 4. Based on the results obtained at the output, the cycles are determined that are not intended for transmission in the group of strobe cycles, to which the results obtained at the output of the device 1607 for performing the modulation operation are applied. The decimal converter 1605 and the module 1607 for performing the conversion operation modulo can also be implemented in software.

Figa and 16 can be described by the following equation (1).

where G: number of the current group of strobe measures;

G _pre : number of the previous group of strobe measures;

иC ⁱ : HSC number of the i-th frame

and

T: inverse of the short circuit;

S: scrambling code.

For a better understanding of equation (1), Figs. 15A and 16 will be described for the case in which the considered group of strobe clocks is the first, n = 16, NSC = 10001100 _2, and KZ = 1/3.

In the memory device 1601 of FIG. 16, a value of '1101001010111000' of a scrambling code consisting of 16 bits is stored, which is selected by the method explained in Fig. 15A. In addition, since NSC = 10001100, the value '1000110010001100' is stored in the memory device 1603 of Fig. 16. The multiplier 1604 contains 16 devices for performing the exclusive-OR operation and outputs the result of the exclusive-OR operation, the value of which is equal to '0101111000110100'. The decimal converter 1605 converts the value obtained at the output of the multiplier 1604 into a decimal value equal to '11386' (or '24116'). For SC = 1/3, the module 1607 performs the modulo conversion operation executes the modulo 3 translation operation for the value '11386' (or '24116') received at the output of the decimal converter 1605 and outputs the value 1 (or 2 in the case of ' 24.116 '). Therefore, to transmit the USTF, UMP and the pilot symbol, which are the control data of the VFKPD, out of 3 clock cycles contained in group No. 2 of strobe clock cycles, the second (or third) clock is transmitted.

Figb and 16 can be described by the following equation (2).

where A _j : a sequence obtained by shifting a fixed sequence A by j bits,

C _i : a sequence obtained by repeating the current SUIT,

S _g : the number of measures forming one group of strobe measures, and

N _G : number of strobe clock groups forming one frame.

Below will be a detailed description of equation (2).

In equation (2), by s (i, j), the number of the measure to be transmitted is indicated from the measures forming the jth group of strobe measures of the ith frame. In this case, the assignment of the measure number is carried out not in a single frame, but in a single element, which is a group of gated measures. A _j is a sequence of n bits obtained by applying shift j for a fixed sequence, as shown in FIG. 15B, where the value of j shift is equal to the number of each group of strobe clocks, C _i is a sequence of n bits created by repeating the current NSC (8 bit). NSC is the number of the binding frame. From the very beginning of the communication session, the base station and the mobile station carry out multiple NSC counting (from 0 to 255). S _G denotes the number of measures in one group of strobe measures. For SC = 1/3 S _G is 3, and for SC = 1/5 S _G is 5. N _G is the number of strobe clock groups in one frame. For SC = 1/3, NG is 5, and for 1 SC = 1/5, N _G is 3. For j = 0 (that is, in the first group of strobe frames of the frame), an exclusive OR operation is performed for A ₀ and the current NSC (C _i ), and then add '1' to the value obtained from the recalculation operation modulo (S _G -1) the result of the exclusive-OR operation. As a result of this operation, when gating, the first measure of each frame is always cut off (that is, it is not transmitted). In addition, for j = N _G -1 (that is, in the last group of strobe frames of the frame), when transmitting, only the last measure S _G -1 is allowed to pass (that is, transmit). For the remaining groups of strobe clock cycles (0 <j <N _G -1), the exclusive OR operation is performed on A _j and C _i , and then the operation of recalculating the value obtained as a result of the exclusive OR operation modulo S _{G is} performed. The reason for the different processing of the first and last groups of strobe strokes than other groups of strobe strokes is to facilitate channel estimation. On figv shows the rule of generation. The gating position can also be determined using equation (3) below, in which the same rule applies for each

A description of the operation of determining the position of the strobe strokes in the group of strobe strokes using equations (2) and (3) will be given with reference to Fig.16, 10A and 10B.

The structure shown in FIG. 16 corresponds to the gating position selection device 150 of FIG. 10A and the gating position selection device 250 of FIG. 10B. A description of the operation of the gating position selector will be described with reference to FIG. 16.

In the memory device 1601, n bits are stored, the selection of which is carried out by the method described with reference to FIG. 15B, and 'n' is a positive number multiple of 8. The sequence stored in the memory device 1601 is a sequence A _j , which obtained by shifting the fixed sequence A by j bits. Repeated NSCs of length n bits are stored in memory device 1603, which are used in the same way in subscriber equipment and in each base station in communication with subscriber equipment. The sequence stored in the memory device 1603 is a sequence G _i obtained by repeatedly repeating the current NSC. The multiplier 1604 contains n exclusive OR devices that bitwise perform the exclusive OR operation with sequence A _j and sequence C _i stored in memory devices 1601 and 1603, generating the result of operation A _j ⊕ C _i , and supplies this result of the operation to the decimal converter 1605. The decimal converter 1605 converts the result of the operation performed in the multiplier 1604 into a decimal number and supplies the decimal value obtained as a result of the conversion In the operation unit 1607 by modulo. At the output of the device 1607, the conversion operation modulo obtains a value that depends on the number S _G cycles, which form one group of strobe cycles. That is, with S _G equal to 3 (that is, KZ = 1/5), the output of the device 1607 for performing the recount operation modulo obtain values 0, 1 and 2, and with S _G equal to 5 (that is, KZ = 1/3), at the output of the device 1607 performing the conversion operation modulo get the values 0, 1, 2, 3 and 4.

In addition, the module 1607 of performing the modulus conversion operation may perform the same modulation operation as in equation (2), in accordance with the number of strobe clock groups in one frame. That is, if the current group of strobe clocks corresponds to group number one of strobe strokes in the frame, then the position of the strobe is determined so as not to transmit data in the first measure from the first group of strobe strokes. Conversely, if the current group of strobe measures has a number corresponding to the last group of strobe measures, then the position of the strobe is determined so that the data of the last measure from the last group of strobe measures is always transmitted.

The gating position information determined in this way for each group of strobe clocks is supplied to the gating transmission controller 141 of FIG. 10A or to the gating transmission controller 241 of FIG. 10B. The gated transmission controller allows the transmission of gated data on the DSCI for the duration of the cycle at the gating position determined by the device for selecting the gating position, and cuts off the transmission of data on the DSCCH during other clock cycles.

In order that the base station and the mobile station can transmit with gating, the mobile communication system has the following methods of transition from one state to another, which are determined in accordance with the installation of the system. In one of the methods, the transition is carried out at a predetermined timer value or through a transition command message received from the base station. In another method, a sequential transition is performed when the gating frequency changes. At this moment, the short-circuit gating frequency can be determined taking into account the throughput of the corresponding mobile station and the channel operating modes. Suppose that one frame contains 16 measures. In this case, in the previous method of transition from one state to another, a direct transition is made from one gating frequency to another, from KZ = 1/1 to KZ = 1/2, from KZ = 1/1 to KZ = 1/4 or from KZ = 1/1 - to KZ = 1/8. In the latter method of transition from one state to another, a sequential transition is made from one gating frequency to another, from KZ = 1/1 to KZ = 1/2, from KZ = 1/2 to KZ = 1/4 and from KZ = 1/4 - to short circuit = 1/8. A description of a gated transmission method according to an embodiment of the present invention will be given both for the case in which one frame contains 16 clocks and for the case in which one frame contains 15 clocks. In the case when one frame contains 16 cycles, the sampling frequency can take the values 1/2, 1/4 and 1/8, and in the case when one frame contains 15 cycles, the sampling frequency can take the values 1 / 3 and 1/5.

FIGS. 7A and 7B show the UFCI of the uplink in the case when, in the absence of data from the VFKPD, a signal of the allocated logical channel UDSP (Media Access Control) (MAC) is generated and the VFKPD of the uplink transmitting the corresponding transition message according to figa and 6B.

The number 311 in FIG. 7A designates a case in which the uplink communication channel is generated by the VFKPD message, but the uplink transmission with gating on the VFKU is not performed (that is, when performing continuous transmission of the uplink communication channel through the VFKU (KZ = 1 /1)). The number 312 designates the case in which the message about the VFKPD of the uplink communication channel is generated, and at the same time, the transmission with gating with KZ = 1/2 is transmitted along the WFKU of the uplink communication channel. The number 313 designates the case in which the message about the VFKPD of the uplink communication channel is generated, and at the same time, the transmission with gating with short-circuit = 1/4 is transmitted over the WFKU of the uplink communication channel. The number 314 designates the case in which the message about the VFKPD of the uplink communication channel is generated, and at the same time, the transmission with gating with short-circuit = 1/8 is transmitted along the WFKU of the uplink communication channel. Even for clock cycles indicated by numbers 312, 313, and 314, the transmission of which according to the transmission pattern with gating is not performed, the transmission of clocks in the corresponding time interval is performed in the usual way when transmitting the VFKPD of the uplink communication channel during the corresponding time intervals. In clock cycles intended for normal transmission, UMP bits used to control the power of the downlink can be omitted, and the duration (or period) of the control sequence can be increased to the duration of the clock before transmission. Starting from the clock cycles after the transmission of the uplink communication channel data through the conventional transmission of clocks, the transmission of the uplink communication channel may be performed without gating, or the transmission with gating may be continued with the original sampling frequency until it reaches the base station Received message about stopping the gating. That is, in the case when during transmission with gating with KZ = 1/2 transmission of the message about VFKPD of the uplink channel is carried out, it is possible to carry out normal transmission of the clock cycle of the above duration, after that again to perform transmission with gating with KZ = 1/2 , and then stop the transmission with gating (KZ = 1) when transmitting subscriber data after receiving a message about the termination of gating from the base station.

As in the case of an uplink communication channel, even for clock cycles that are not transmitted according to the gated transmission pattern, the transmission of clock cycles in the corresponding time interval is carried out in the usual way in the case of generation of a downlink communication channel VFKD during downlink transmission with gating communication channel. In clocks intended for normal transmission, UMP bits used to control the power of the uplink can be omitted, and the duration of the pilot sequence can be increased to the duration of the clock.

Starting from the clock cycles following the transmission of the downlink DFCCH message by means of the usual clock transmission, the downlink DSCCH can be transmitted without gating, or the gated transmission can be continued with the original gating frequency until it is out of the mobile station Received a request to stop the gating. That is, in the case when during the transmission with gating with KZ = 1/2 the message about the VFKPD of the downlink is transmitted, it is possible to carry out the usual transmission of the beat of the above duration, after that again to perform transmission with gating with KZ = 1/2 , and then stop the transmission with gating (KZ = 1) when transmitting the data of the subscriber after receiving from the mobile station a message about the termination of the gating.

The number 315 in FIG. 7B indicates a case in which the generation of the uplink communication channel VCFD message was performed while performing transmission with gating on the fixed-channel transmission channel of the uplink communication channel with SC = 1/2. The number 316 designates the case in which the generation of the uplink communication channel VCFD message is carried out when performing transmission with gating on the fixed-channel transmission channel of the uplink channel with SC = 1/4. The number 317 designates the case in which the generation of the uplink communication channel VCFD message is carried out when performing transmission with gating on the fixed-channel transmission channel of the uplink communication channel with SC = 1/8. Even for clock cycles indicated by numbers 315, 316, and 317, the transmission of which according to the transmission pattern with gating is not performed, the transmission of clocks in the corresponding time interval is performed in the usual way when transmitting the VFKPD of the uplink communication channel for the corresponding time periods. In clock cycles intended for normal transmission, UMP bits used to control the power of the downlink can be omitted, and the duration of the pilot sequence can be increased to the duration of the clock before transmission. Starting from the clock cycles after the transmission of the uplink VCFD message by means of the usual transmission of power control groups, the transmission of the uplink CFCI can be performed without gating, or it is possible to continue transmission with gating with the original gating frequency until from the base station no gating termination message will be received. That is, in the case when during transmission with gating with KZ = 1/2 transmission of the message about VFKPD of the uplink channel is carried out, it is possible to carry out normal transmission of the clock cycle of the above duration, after that again to perform transmission with gating with KZ = 1/2 , and then stop the transmission with gating (KZ = 1) when transmitting subscriber data after receiving a message about the termination of gating from the base station.

It is also possible to simultaneously transmit the transmission of both the DSCI of the uplink and the DSCCH of the downlink according to the same gating pattern. Starting from the clock cycles following the transmission of the downlink DFCCH message by means of the usual clock transmission generated during the transmission of the downlink DSCCH with gating, it is possible to transmit the downlink DSCCH without gating or the transmission of downlink DSCCH can be performed a communication channel with an initial gating frequency until a gating termination message is received from the mobile station. That is, in the case when the transmission of the message on the downlink VCFD is carried out during the transmission with gating at SC = 1/2, it is possible to carry out the usual transmission of the beat of the above duration, after which again to perform transmission with gating with SC = 1/2 and then stop the transmission with gating (KZ = 1) when transmitting data of the subscriber after receiving a message about the termination of gating from the mobile station.

On figa shows a method of transmitting signals in the downlink and in the uplink when the transmission of the VFKPD downlink is stopped. When, in the ANCR mode, in the absence of any information exchange data intended for transmission of the uplink communication channel through the VFCF, the transmission of the downlink VCFD is stopped, which is indicated by position 801, the base station and the mobile station begin gating if the set time has elapsed timer and received a message about the start of the gating. Despite the fact that FIG. 8A shows an embodiment in which the generation of the start gate message is performed by the base station, the transmission of the request message for performing the gating operation to the base station in the absence of the downlink VFKPD and the uplink VFKPD can also be performed and mobile station. As shown in FIG. 8A, during the transmission of the downlink DSCI, all USTF, SAR, and pilot symbols can also be transmitted without gating. Since the UMP bits contain meaningless SAR values obtained by measuring the power level of the pilot symbols of the gated clocks in the UFCI of the uplink, the mobile station does not take into account the senseless SPS transmitted from the base station, performing power control of the uplink taking into account the gating pattern for UFCI uplink, and transmits with the same transmit power as the transmit power of the previous clock.

Alternatively, when transmitting the downlink DPCCH according to FIG. 8A, it is also possible to gate only the USTF and UMP bits in the downlink DSCCH without performing the gating of pilot symbols in the downlink DSCCH. Here, the gating pattern is identical to the gating pattern for the UFCI of the uplink communication channel of the mobile station. The cycle in which the UMP bits are gated in the downlink DSCF corresponds to UMP bits generated by measuring pilot symbols corresponding to the gated beat for the DSCCH transmitted from the mobile station.

Reference numeral 802 denotes a situation in which a message transmitted by the base station is transmitted to the mobile station via the downlink VFKPD. In this case, the mobile station, which carried out the transmission gating on the UFCI of the uplink, after receiving the message, may stop the transmission with gating and perform normal transmission (with SC = 1). Alternatively, the mobile station, which performed the transmission gating of the UFCI transmission of the uplink, can continue to transmit with gating even after receiving the message, and then perform the normal transmission (with SC = 1) after receiving the message about the termination of the gating.

On figb shows a method of transmitting signals in the downlink and in the uplink channel in the case when stopped transmitting VFKPD uplink communication channel. When in the ANCR mode, in the absence of a downlink VFKPD, the downlink VFKPD transmission is stopped, which is indicated by the position number 803, the base station and the mobile station transition from one state to another at the appointed (or scheduled) time by both of them after a predetermined time timer or after exchanging messages about the transition from one state to another. Despite the fact that FIG. 8B shows an embodiment in which the generation of a message about the transition from one state to another is performed by means of a downlink communication channel, the generation of a message from one state to another can be carried out even in an uplink communication channel. mobile station. As shown in FIG. 8B, when transmitting a downlink DSCI, all UTFF, SAR, and pilot symbols can be transmitted without gating. Since the UMP bits contain meaningless SAR values determined by measuring the power level of the pilot symbols of the gated clocks in the UFCI of the uplink, the mobile station does not take into account the meaningless SPS transmitted from the base station by controlling the power of the uplink taking into account the gating pattern for UFCI uplink, and transmits with the same transmit power as the transmit power of the previous clock.

Alternatively, when transmitting a downlink DSCI according to FIG. 8B, it is also possible to perform gating only USF and UMP bits in a downlink DSCCH without performing gating pilot symbols in the downlink DSCCH. Here, the gating pattern is identical to the gating pattern for the UFCI of the uplink communication channel of the mobile station. The cycle in which the UMP bits are gated in the downlink DSCF corresponds to UMP bits generated by measuring pilot symbols corresponding to the gated beat for the DSCCH transmitted from the mobile station.

The reference numeral 804 denotes a situation in which a message about the transition from one state to another, the generation of which is performed by the base station, is transmitted to the mobile station via the downlink VFKPD. In this case, the mobile station that performed the transmission gating on the BFCI of the uplink, after receiving a message about the transition from one state to another, may stop the transmission with gating and perform normal transmission (with SC = 1). Alternatively, the mobile station, which gated the transmission of the UFCI of the uplink, can continue to transmit with gating even after receiving a message about the transition from one state to another, and then at the transition point from one state to another, indicated by the message about the transition from one state to another, stop transmission with gating and perform normal transmission (with SC = 1).

On figv shows a method of transmitting signals in the downlink and in the uplink in the case when the transmission of the VFKPD downlink is stopped. When, in the ANCR mode, in the absence of uplink VCFD, the downlink VCFD transmission is stopped, which is indicated by the position number 805, the base station and the mobile station go into ONCR mode after a predetermined timer or in the case of generating a message about the transition from one state to another for VFKPD downlink. Despite the fact that FIG. 8B shows an embodiment in which the base station generates a message about the transition to the ANKR mode, in the absence of a downlink VFKPD and an upstream VFKPD, a message is sent requesting to make a transition from one state to another the base station can also be carried out by the mobile station. As shown in FIG. 8B, when transmitting a downlink DSCI, all UTFF, SAR, and pilot symbols can be transmitted without gating. Since the UMP bits contain meaningless SAR values determined by measuring the power level of the pilot symbols of the gated clocks in the UFCI of the uplink, the mobile station does not take into account the meaningless SPS transmitted from the base station by controlling the power of the uplink taking into account the gating pattern for UFCI uplink, and transmits with the same transmit power as the transmit power of the previous clock.

Alternatively, when transmitting the downlink DPCCH according to FIG. 8B, it is also possible to gate only the USTF and UMP bits in the downlink DSCCH without performing gating pilot symbols in the downlink DSCCH. Here, the gating pattern is identical to the gating pattern for the UFCI of the uplink communication channel of the mobile station. The cycle in which the UMP bits are gated in the downlink DSCF corresponds to UMP bits generated by measuring pilot symbols corresponding to the gated beat for the DSCCH transmitted from the mobile station.

The reference numeral 806 denotes a situation in which a message about the transition from one state to another, generated by the mobile station, is transmitted to the base station via the downlink channel fixed-pass-through-pass loop. In this case, the mobile station, which performed the transmission gating on the VFKU of the uplink, after transmitting a message about the transition from one state to another on the VFKPD of the uplink, can stop the transmission with gating and then perform normal transmission (with SC = 1). Alternatively, the mobile station, which gated the transmission of the UFCI of the uplink, can continue to transmit with gating even after transmitting a message about the transition from one state to another, and then at the transition point from one state to another, stop the transmission with gating and perform normal transmission ( with short circuit = 1).

On figg shows a method of transmitting signals in the downlink and in the uplink when the transmission of the VFKPD uplink is stopped. When, in the ANKR mode, in the absence of a downlink VFKPD, the uplink VFKPD transmission is stopped, which is indicated by the position number 807, the base station and the mobile station transition from one state to another to the time (scheduled) by them both after a specified time timer or after exchanging messages about the transition from one state to another. Despite the fact that FIG. 8G shows an embodiment in which a message about a transition from one state to another is generated by a downlink UCFCA, a message about a transition from one state to another can also be generated in the UFCA of the uplink mobile station. As shown in FIG. 8G, when transmitting a downlink DSCI, all USTF, SAR, and pilot symbols can also be transmitted without gating. Since the UMP bits contain meaningless SAR values determined by measuring the power level of the pilot symbols of the gated clocks in the UFCI of the uplink, the mobile station does not take into account the meaningless SPS transmitted from the base station by controlling the power of the uplink taking into account the gating pattern for UFCI uplink, and transmits with the same transmit power as the transmit power of the previous clock.

Alternatively, when transmitting a downlink DSCI according to FIG. 8G, it is also possible to perform gating only USTF and UMP bits in a downlink DSCCH without performing gating pilot symbols in the downlink DSCCH. Here, the gating pattern is identical to the gating pattern for the UFCI of the uplink communication channel of the mobile station. The cycle in which the UMP bits are gated in the downlink DSCF corresponds to UMP bits generated by measuring pilot symbols corresponding to the gated beat for the DSCCH transmitted from the mobile station.

The reference numeral 808 denotes a situation in which a message about the transition from one state to another, the generation of which is performed by the mobile station, is transmitted to the base station via VFKPD of the uplink communication channel. In this case, the mobile station, which performed the transmission gating on the VFKU of the uplink, after transmitting a message about the transition from one state to another on the VFKPD of the uplink, can stop the transmission with gating and then perform normal transmission (with SC = 1). Alternatively, the mobile station, which gated the transmission of the UFCI of the uplink, can continue to transmit with gating even after transmitting a message about the transition from one state to another, and then at the transition point from one state to another, stop the transmission with gating and perform normal transmission ( with short circuit = 1).

On figa shows a method of transmitting signals in the downlink and in the uplink when the transmission of the VFKPD downlink is stopped. When the transmission of the downlink VCFD is terminated, the base station and the mobile station transition from one state to another at a point in time both of them after a predetermined timer or after exchanging messages about the transition from one state to another. Fig. 9A shows a case in which the gating pattern for the downlink DSCI is identical to the gating pattern for the uplink DSCCH. Despite the fact that FIG. 9A shows an embodiment in which a message about a transition from one state to another is transmitted by a downlink UCFCA, a message from a transition from one state to another can also be transmitted via an uplink UCCH mobile station.

On figb shows a method of transmitting signals in the downlink and in the uplink channel in the case when the transmission of the VFKPD uplink communication is stopped. When the transmission of the uplink communication channel is terminated, the base station and the mobile station transition from one state to another at a point in time both of them after a predetermined timer or after exchanging messages about the transition from one state to another. FIG. 9B shows a case in which the gating pattern for the downlink DSCCH is identical to the gating pattern for the uplink DSCCH. Despite the fact that FIG. 9B shows an embodiment in which the transfer of the message to the transition to another state is performed by the DPSCH of the downlink, the transmission of the message of the transition from one state to the other can also be done by the DPSCH of the uplink communication channel of the mobile station.

In the above description and in the drawings, the frames of the downlink and the uplink have the same starting point of the frame. However, in the UNRA mobile communication system (UTRA) (UMTS Terrestrial Radio Access), the starting point of the uplink frame has an artificial delay of 250 μs (microseconds) compared to the starting point of the downlink frame. This is done so that the delay time of the power control is equal to one clock cycle (= 0.625 ms), taking into account the delay in passing the transmission signal when the radius of the cellular communication zone is less than 30 km. Therefore, FIGS. 11A to 11D show gating signal transmission modes of the BCHF, in which the artificially entered delay time between the start time of the frame in the downlink communication channel and in the uplink communication channel is ensured. On figa and 10B shows the device, respectively, of the transmitter of the base station and the transmitter of the mobile station, which allow such transmission with gating.

10A shows a transmitter structure of a base station according to another embodiment of the present invention. This base station transmitter differs from the transmitter shown in FIG. 5A in that it can separately perform gating of the pilot symbols, USTF and UMP bits forming the downlink DSCI according to different gating patterns using the gating transmission controller 141. That is, in the ONCR mode, in which there is no transmission of information exchange data through the VFKPD of the uplink communication channel and by the VFKPD of the downstream communication channel, the gated transmission controller 141 gates the transmission of pilot symbols, USTF and UMP bits for the UFCI of the downlink communication channel cycle (or in the time interval), agreed with the mobile station. By using the gated transmission controller 141, a single gated transmission element can also be composed of a pilot symbol from the (n-1) th clock along with the USTF and UMP bits from the n-th clock. In the case when the base station transmits ancillary data using a gated transmission controller 141 during a transmission with strobing in the ONC mode, it is possible not to strob the transmission of pilot symbols and USTF during the time of transmission of overhead data.

In an alternative embodiment, in the ONCR mode, in which there is no transmission of data exchange via the VFKPD of the uplink communication channel and the VFKPD of the downstream communication channel, the gated transmission controller 141 may perform gating transmission of one cycle (or one full cycle) containing a pilot -symbols, USTF and UMP bits for the downlink communication channel, which are in that clock cycle (or in a time interval), the sequence of which is agreed with the mobile station.

Although the downlink gating transmission pattern is identical to the uplink gating transmission pattern, a shift may exist between them to provide effective power control. This shift is set as a system parameter.

The gated transmission controller 141 may select a gate gating position either randomly or at regular intervals, in accordance with the output of the gating position selector 150. That is, the gating position selector 150 can set the gating position of the clocks so that they are arranged at regular intervals. For example, with KZ = 1/3, the transmission (or transmission during gating) of the 3rd, 6th, 9th, ... ticks is performed. In addition, the gating position selector 150 may randomly select the position of the strobe strobe by the method described with reference to FIGS. 15A, 15B and 16. In this case, the position of the strobe strokes is set according to a random pattern gating pattern.

10B shows a transmitter structure of a mobile station according to another embodiment of the present invention. This transmitter of the mobile station differs from the transmitter depicted in FIG. 5B in that it can separately carry out the gating of pilot symbols, USTF, SLA and UMP bits, which form a UFCI of the uplink communication channel, using the transmission gate controller 241 gating patterns. In the ONCR mode, in which there is no transmission of information exchange via the VFKPD of the uplink communication channel and by the VFKPD of the downstream communication channel, the transmission controller 241 with gating performs the gating of the transmission of pilot symbols, USTF, UOS and UMP bits for the UFCI of the uplink communication channel that are in the group power control (or per cycle), consistent with the mobile station. In the case when the base station transmits ancillary data using a gated transmission controller 241 during a transmission with strobing in ONCR mode, it is possible not to strobit the transmission of pilot symbols and USTF during the time of transmission of overhead data.

In an alternative embodiment, in the ONCR mode, in which there is no transmission of data exchange via the VFKPD of the uplink communication channel and the VFKPD of the downstream communication channel, the gated transmission controller 241 may perform gated transmission of one clock cycle containing pilot symbols, USTF bits, SLM and SAR for the UFKU uplink, which are in tact, agreed with the mobile station.

Although the downlink gating transmission pattern is identical to the uplink gating transmission pattern, a shift may exist between them to provide effective power control. This shift is set as a system parameter.

The gated transmission controller 241 may select a gate gating position either randomly or at regular intervals, in accordance with the output of the gating position selector 250. That is, the strobe position selector 250 can set the strobe position of the clocks so that they are arranged at regular intervals. For example, with KZ = 1/3, the transmission (or transmission during gating) of the 3rd, 6th, 9th, ... ticks is performed. In addition, the strobe position selector 250 may randomly select the strobe position of the measures using the method described with reference to FIGS. 15A, 15B and 16. In this case, the position of the strobe strokes is set according to a random pattern strobe.

The drawings of FIGS. 11A to 11D and FIGS. 12A to 12D show signal transmission patterns for gated transmission by transmitters of the base station and the mobile station of FIGS. 10A and 10B. The drawings of FIGS. 11A to 11D show how gating transmission can be achieved when the frame duration is 10 ms and each frame contains 16 cycles, that is, each cycle has a duration of 0.625 ms. The drawings 12A through 12D show how gating transmission can be performed when the frame duration is 10 ms and each frame contains 15 cycles, that is, each cycle has a duration of 0.667 ms.

11A shows a gated transmission for a downlink DSCCH and an uplink DSCCH according to a first embodiment of the present invention. As shown in FIG. 11A, a gating unit transmission element for a downlink DSCCH may not be equal to one clock cycle. That is, for two adjacent clock cycles, the pilot symbol from the nth clock cycle and the USTF and UMP bits from the (n + 1) -th clock cycle are set as a single transmission element with gating for the downlink DSCF. For example, for a gating frequency equal to 1/2, a pilot symbol from a clock cycle with number 0 and bits of USTF and UMP from a clock cycle number 1 are set as a single transmission element with gating for a downlink DSCF. For a gating frequency equal to 1 / 4, as a unit transmission element with gating for the downlink DSCF, a pilot symbol from cycle number 2 and bits USTF and SIA from cycle number 3 are set. For a sampling frequency of 1/8, as a unit transmission element with gating for Dfcf downlink the communication sets the pilot symbol from clock cycle number 6 and the USTF and UMP bits from clock cycle number 7. In this case, a single transmission element with gating for the downlink DSCF is set so that it differs from the existing single cycle, since the nth pilot symbol can required in the receiver for demodulation of the (n + 1) th SAR according to the method of demodulating the SPS signal.

In the case when, during such a transmission with gating, a message on the transmission of service signals was generated, the transmission of a message on the transmission of service signals is performed using the VFKPD downlink or VFKPD uplink. Therefore, the performance at the starting point of the frame is very important. As shown in FIG. 11A, in the invention, the SAC for the downlink UFCI and the UPC for the downlink UFCI are placed in measure number 15 (i.e., in the 16th measure, which is the last measure of the nth frame), which provides the ability to control the power of the first clock cycle of the (n + 1) -th frame using UMP bits located in the last clock cycle of the nth frame. That is, the SAR used to control the power of the first clock of the next frame, is placed in the last clock of the present frame.

Meanwhile, in the above-mentioned UNRA system, the shift between the instants of the frames in the downlink and in the uplink is fixed at 250 μs. However, when a downlink transmission channel and a fixed-channel transmission channel UFCI are gated, the shift value may change and take on an arbitrary value when exchanging the transmission parameter with a fixed-channel transmission channel gating (UFCA) between the base station and the mobile station during the call setup process. In the call setup process, an appropriate shift value is set taking into account the delay in the passage of the signal between the base station and the mobile station. That is, in the case when the radius of the cellular communication zone exceeds 30 km, the value of the shift value is set larger than the usual shift value of 250 μs, used for transmission with gating on the VFKU, and this value can be determined experimentally.

11B shows a gated transmission for a downlink DSCCH and an uplink DSCCH according to a second embodiment of the present invention. On figb depicts a case in which when performing transmission with gating with gating frequencies equal to 1/2, 1/4 and 1/8, the transmission of the downlink DFCI is carried out before the transmission of the uplink DSCC. This difference (i.e., shift) is referred to as the “time interval between downlink and uplink” (NK-VK time) (“DL-UL timing”) for gating frequencies 1/2, 1/4 and 1/8.

With reference to FIG. 11B, for two adjacent clock cycles, a pilot symbol from the nth clock cycle and bits of the USTF and SAR from the (n + 1) -th cycle are set as a single gate transmission element for the downlink DSCI. For example, for a gating frequency equal to 1/2, a pilot symbol from clock number 0 and USTF and UMP from clock number 1 are set as a single transmission element with gating for the downlink DSCI. For a sampling frequency of 1/4, as a single transmission element with gating for a downlink DSCI, set the pilot symbol from clock number 2 and USTF and UMP from clock number 3. For a gating frequency of 1/8, set as a single transmission element with gating for downlink DSCCH pilot with symbol from measure number 6 and USTF and UMP from measure number 7.

In addition, it is indicated that the SAR, which serves to control the power of the first clock of the next frame, is in the last clock of the current frame. That is, both the UMF for the downlink UFCI and the UMP for the uplink UFCI are located at measure number 15 (that is, at the 16th measure).

11B shows a gated transmission for a downlink DSCCH and an uplink DSCCH according to a third embodiment of the present invention. 11B shows a case in which, when performing gated transmission with gating frequencies 1/2, 1/4, and 1/8, the transmission of the UFCI of the uplink is performed before the transmission of the UFCI of the downlink.

With reference to FIG. 11B, for two adjacent clock cycles, a pilot symbol from a predetermined nth cycle and USTF and SAR from the (n + 1) -th cycle are set as a gating unit for a downlink DSCI. For example, for a gating frequency equal to 1/2, a pilot symbol from clock number 1 and USTF and UMP from clock number 2 are set as a single transmission element with gating for the downlink DSCI. For a sampling frequency of 1/4, as a single transmission element with gating for a downlink DSCI, set the pilot symbol from clock number 2 and USTF and UMP from clock number 3. For a gating frequency of 1/8, set as a single transmission element with gating for downlink DSCCH pilot with symbol from measure number 6 and USTF and UMP from measure number 7.

In addition, it is indicated that the SAR, which serves to control the power of the first clock of the next frame, is in the last clock of the current frame. That is, both the UMF for the downlink UFCI and the UMP for the uplink UFCI are located at measure number 15 (that is, at the 16th measure).

11G shows a gated transmission for a downlink DSCCH and an uplink DSCCH according to a fourth embodiment of the present invention. 11G shows a case in which when performing gated transmission with gating frequencies 1/2, 1/4, and 1/8, the downlink transmission DFCI is transmitted before the uplink transmission of the UFCI, and the downlink and uplink gating patterns are specified having the same period.

With reference to FIG. 11G, for two adjacent clock cycles, a pilot symbol from a predetermined nth cycle and USTF and SAR from the (n + 1) -th cycle are set as a gating unit for a downlink DSCI. For example, for a gating frequency equal to 1/2, a pilot symbol from clock number 0 and USTF and UMP from clock number 1 are set as a single transmission element with gating for the downlink DSCI. For a sampling frequency of 1/4, as a single transmission element with gating for a downlink DFCI, set the pilot symbol from clock number 0 and USTF and SAR from clock number 1. For a gating frequency of 1/8, set as a single transmission element with gating for downlink DSCF pilot with symbol from measure number 2 and USTF and UMP from measure number 3.

In addition, it is indicated that the SAR, which serves to control the power of the first clock of the next frame, is in the last clock of the current frame. That is, both the UMF for the downlink UFCI and the UMP for the uplink UFCI are located at measure number 15 (that is, at the 16th measure).

12A and 12B show gated transmission for the downlink DSCCH and the uplink DSCCH according to the fifth embodiment of the present invention. On figa and 12B shows the case in which the gating frequency for transmission with gating UFCI downlink and UFCI uplink is 1/3, that is, the transmission during gating is allowed at time intervals corresponding to 1/3 of all clock cycles . That is, the transmission with gating is carried out at those time intervals that correspond to 5 measures out of the total number of measures equal to 15. Here, the gating unit transmission element for the downlink DSCI is set such that it differs from the unit cycle. That is, for two adjacent clock cycles, a pilot symbol from a predetermined nth cycle and USTF and SAR from the (n + 1) -th cycle are set as a single transmission element with gating for the downlink DSCF. Accordingly, the sequence of the transmission is determined by the sequence of the pilot symbol from the nth cycle and SAR and the USTF symbols from the (n + 1) -th cycle.

In <Option 1> of FIG. 12A, a case is shown in which at the beginning of the transmission with gating, the UFCI of the uplink and the UFCI of the downlink are simultaneously transmitted, and the gating patterns of the downlink and uplink have the same predetermined period. For two adjacent clock cycles, a pilot symbol from the 1st clock cycle and USTF and UMP from the 2nd clock cycle are specified as a single transmission element with gating for the downlink DSCF; as a single transmission element with gating, a pilot symbol from the 4th cycle and USTF and UMP from the 5th cycle are set for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 7th clock cycle and USTF and UMP from the 8th clock cycle are specified for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 10th clock cycle and USTF and UMP from the 11th cycle are specified for the downlink DSCI; and also, as a single transmission element with gating for the downlink DSCF, a pilot symbol from the 13th clock cycle and USTF and UMP from the 14th cycle are specified.

In <Option 2>, a case is shown in which, at the start of the transmission with gating, the transmission of the uplink DSCCH is performed before the transmission of the downlink DSCCH. Here, for two adjacent clock cycles, a pilot symbol from the 0th cycle and USTF and UMP from the 1st cycle are specified as a single transmission element with gating for the downlink DSCF; as a single transmission element with gating, a pilot symbol from the 3rd clock cycle and USTF and UMP from the 4th clock cycle are specified for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 6th cycle and USTF and UMP from the 7th cycle are specified for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 9th cycle and USTF and UMP from the 10th cycle are specified for the downlink DSCI; and also, as a single transmission element with gating for the downlink DSCF, a pilot symbol from the 12th clock cycle and USTF and UMP from the 13th cycle are specified.

In <Option 3> of FIG. 12B, a case is shown in which at the beginning of the transmission with gating, the transmission of the uplink DSCCH is performed before the transmission of the downlink DSCCH. Here, for two adjacent clock cycles, a pilot symbol from the 1st clock cycle and USTF and UMP from the 2nd clock cycle are specified as a single transmission element with gating for the downlink DSCF; as a single transmission element with gating, a pilot symbol from the 4th cycle and USTF and UMP from the 5th cycle are set for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 7th clock cycle and USTF and UMP from the 8th clock cycle are specified for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 10th clock cycle and USTF and UMP from the 11th cycle are specified for the downlink DSCI; and also, as a single transmission element with gating for the downlink DSCF, a pilot symbol from the 13th clock cycle and USTF and UMP from the 14th cycle are specified.

In <Option 4>, a case is shown in which, at the start of a gated transmission, the transmission of the uplink DSCCH is performed before the transmission of the downlink DSCCH. Here, for two adjacent clock cycles, a pilot symbol from the 14th clock cycle and USTF and UMP from the 0th cycle are specified as a single transmission element with gating for the downlink DSCF; as a single transmission element with gating, a pilot symbol from the 2nd cycle and USTF and UMP from the 3rd cycle are set for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 5th clock cycle and USTF and UMP from the 6th clock cycle are specified for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 8th cycle and USTF and UMP from the 9th cycle are specified for the downlink DSCI; and also, as a single transmission element with gating, a pilot symbol from the 11th cycle and USTF and UMP from the 12th cycle are specified for the downlink DSCF.

In <Option 5> a case is shown in which at the beginning of the transmission with gating, the transmission of the UFCI of the uplink communication channel is carried out before the transmission of the UFCI of the downlink communication channel. Here, for two adjacent clock cycles, a pilot symbol from the 0th cycle and USTF and UMP from the 1st cycle are specified as a single transmission element with gating for the downlink DSCF; as a single transmission element with gating, a pilot symbol from the 3rd clock cycle and USTF and UMP from the 4th clock cycle are specified for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 6th cycle and USTF and UMP from the 7th cycle are specified for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 9th cycle and USTF and UMP from the 10th cycle are specified for the downlink DSCI; and also, as a single transmission element with gating for the downlink DSCF, a pilot symbol from the 12th clock cycle and USTF and UMP from the 13th cycle are specified.

12B shows a gated transmission for the downlink DSCCH and the uplink DSCCH according to a sixth embodiment of the present invention. 12B shows a case in which the gating frequency for downlink transmission of the downlink channel and the UFCI of the uplink channel is equal to 1/5, that is, compared to the transmission of all clocks in normal transmission, only 1 is transmitted in the transmission with gating / 5 all measures. That is, the transmission with gating is carried out in such a way as to ensure the transmission of 3 measures out of the total number of measures, which is usually equal to 15. Here, the gating unit transmission element for the downlink DSCI is set so that it differs from the unit cycle. That is, for two adjacent clock cycles, a pilot symbol from a predetermined nth cycle and USTF and SAR from the (n + 1) -th cycle are set as a single transmission element with gating for the downlink communication channel. Therefore, the transmission of the pilot symbol, SAR and USTF is carried out in 5 cycles, and the transmission of characters is carried out in a sequence determined by the sequence of the pilot symbol of the n-th clock and the symbols of the SAR and USTF from the (n + 1) -th clock. Here, the transmission of the UMP symbol and the USTF symbol is carried out continuously.

With reference to FIG. 12B, for two adjacent clock cycles, a pilot symbol from a third clock cycle and USTF and UMP from a fourth clock cycle are specified as a single transmission element with gating for the downlink DSCI; as a single transmission element with gating, a pilot symbol from the 8th cycle and USTF and UMP from the 9th cycle are specified for the downlink DSCI; and also, as a single transmission element with gating for the downlink DSCF, a pilot symbol from the 13th clock cycle and USTF and UMP from the 14th cycle are specified.

12G shows a gated transmission for a downlink DSCCH and an uplink DSCCH according to a seventh embodiment of the present invention. With reference to FIG. 12G, the gating pattern is set in such a way as to ensure that the last clock is not gated in the DSCI of the uplink communication channel in the ONCR mode. Such a gating pattern is highly efficient in channel estimation since the base station can carry out channel estimation using pilot symbols from the last frame clock. In addition, there is the possibility of increasing the time required for the base station to process the SLA bits transmitted from the mobile station.

12D shows a gated transmission for the downlink DSCCH and the uplink DSCCH according to an eighth embodiment of the present invention. The gating pattern is shown, which ensures message transmission over the downlink during transmission with gating in the ONCR mode.

With reference to FIG. 12D, during the period of time of the frame during which the message is transmitted over the downlink (that is, the transmission time period over the VFKD downlink), the gated transmission of the pilot signal and the USTF are stopped, and continue transmission with gating only UMP according to the gating pattern. As shown in FIG. 12D, for the time period of the frame during which the message is transmitted on the uplink (that is, the time period of transmission on the VFKPD of the uplink), it is also possible to stop the gating of the pilot signal and the USTF, and continuous gating of SLD and UMP according to the gating pattern.

When the gated transmission function of the mobile communication system of the present invention is implemented, it is necessary to be able to control the transmission power of the DPCCH data even in the gated transmission state. Here, a description will be given of an operation in which the mobile station and the base station generate and transmit SAR bits by measuring a signal received from the opposite side during transmission with gating, and control the data transmission power using the received SPS bit.

The gating of the data of the IFCS begins and ends at the time points indicated by the upper level of the system. In the transmission mode with gating, the base station and the mobile station operate in different ways according to whether there is VFKPD in VFK (in a dedicated physical channel) (DPCH), intended for transmission. In the case where the VFC does not contain the VFKPD, the transmission controller with gating from the transmitting side by controlling the VFKU data allows the transmission of the data of the selected measure from the corresponding group of strobe measures and cuts off the data of other measures. Moreover, the method of determining the position of the strobe strobe in a single element, which is a group of strobe strokes, can be implemented according to a predetermined strobe pattern, or the position of the strobe strobe can be also specified as a strobe pattern having an irregular structure, using SNK or NSC according to the above description. Otherwise, if the VFKPD data exists in the VFK, the transmitter transmits (or passes) each time cycle. However, as a reliable clock from the point of view of power control, the receiving side recognizes only that clock from all clock cycles of the received frame, which is located in the selected gate position. Such a gated transmission can be used either only for the downlink between the base station and the mobile station, or for both communication channels: the uplink and the downlink. Power control is carried out in different ways for the case in which the gated transmission is used only for the downlink, and for the case in which the gated transmission is used for both communication channels: the uplink and the downlink.

The uplink power control procedure includes a first method in which the base station generates an SAR bit (transmit power control) by measuring the quality of communication in the uplink and a second method in which the mobile station controls its transmit power according to the SPS bit transmitted from the base station on the downlink. The downlink power control procedure comprises the first method in which the mobile station generates an SAR bit by measuring the quality of communication in the downlink and the second method in which the base station controls its transmit power according to the SPS bit transmitted from the mobile station on the uplink communication channel. When describing the method of power control during transmission with gating, a description of the time point at which the SPS bit is generated and transmitted, and the time at which the transmission power is controlled using the received SPS bit, will be given separately with respect to the base station and mobile station.

First, a description is given of the power control operation for the case in which the transmission operation with gating is performed for both communication channels: an uplink channel and a downlink channel.

Since in the transmission operation with gating in the uplink and downlink, the clocks, which can be transmitted by the base station and the mobile station, exist in the form of a template having an irregular structure, power control should be performed taking into account the presence of a template with an irregular structure . On figa and 17B shows the time dependence of the power control procedure when transmitting with gating in both communication channels: in the uplink communication channel and in the downward communication channel.

Uplink transmission power control by the mobile station.

The mobile station extracts the SAR bits from the actual clock received by the last from the base station, i.e., from the downlink clock, the transmission of which is allowed during gating, and controls the transmission power of its data of the BCH in accordance with the SPS bits. Moreover, since in accordance with the type of the gating pattern having an irregular structure, the actual clock cycle of the downlink can differ from the actual clock cycle of the uplink, the mobile station stores the received valid bits of the SAR, and then, in the presence of a clock, intended for transmission, it transmission according to stored UMP bits.

UMP bit generation and transmission for downlink power control

The mobile station generates the SAR bit by measuring the quality of communication in the downlink during the actual (or allowed for transmission during gating) clock cycle of the downlink. Before transmission, the SAR bits obtained as a result of the generation are stored until the transmission of the actual clock cycle via the uplink.

Downlink transmission power control by base station

The base station extracts the SAR bits from the actual clock received by the last from the mobile station, that is, from the clock of the uplink, the transmission of which is allowed during gating, and controls the transmit power of its signal according to the value of the SPS bits. Moreover, since, in accordance with the type of a gating pattern having an irregular structure, the actual clock cycle of the uplink channel may differ from the actual clock cycle of the downlink, the mobile station memorizes the received valid bits of the SAR, and then, in the presence of a clock cycle, intended for transmission, it transmission according to the stored bits of the UMP.

UMP bit generation and transmission for uplink power control

The base station generates the SAR bit by measuring the quality of communication in the uplink communication channel during a valid (or allowed for transmission during gating) clock cycle in the uplink communication channel. Before transmission, the SAR bits obtained as a result of generation are stored until the transmission of the actual clock cycle through the downlink.

The following is a description of the power control operation in a mobile communication system having a gated transmission function for the case in which the gated transmission operation is performed only for the downlink.

In the case where in the mobile communication system gating transmission is used only in the downlink, the mobile station carries out continuous data transmission of the BFCI, and the base station transmits only the clock data from a single element representing a group of strobe clocks at the selected gating position.

Since the clocks intended for transmission have the form of a pattern with an irregular structure, therefore, in the base station, a power control method must be implemented that is different from the power control method for that embodiment in which both the base station and the mobile station perform gated transmission . On figa and 18B shows the time dependence of the power control procedure for the case in which the transmission with gating is performed only in the downlink.

Uplink transmission power control by the mobile station.

The mobile station extracts the SAR bits from the actual clock received from the base station, i.e. from the downlink clock, the gating position of which is selected from a single element representing a group of strobe clock cycles, and controls the transmit power of its signal according to the SPS bits. Moreover, since in accordance with the type of the gating pattern having an irregular structure, the actual clock cycle of the downlink can differ from the actual clock cycle of the uplink, the mobile station stores the received valid bits of the SAR, and then, in the presence of a clock, intended for transmission, it transmission according to stored UMP bits.

UMP bit generation and transmission for downlink power control

The mobile station generates the SAR bit by measuring the quality of the communication in the downlink during the actual clock cycle of the downlink. The mobile station immediately transmits the SAR bits received as a result of the generation to the base station and performs the multiple transmission of the SPS bits until a new UMP bit is generated. The reason for performing multiple UMP bit transmission is to ensure that the base station receives at least one UMP bit prior to the clock in which the base station can transmit over the downlink and to provide the possibility of reducing the frequency of occurrence of UMP errors due to retransmission.

Downlink transmission power control by base station

The base station extracts the SAR bits received from the mobile station, and controls the transmit power of its signal according to the value of the SPS bits. In this case, the base station can extract UMP bits using at least one UMP bit repeatedly transmitted by the mobile station.

As described above, in an embodiment of the present invention, it is possible to control the transmit power of the base station and the mobile station not only in the case in which the uplink DSCF signal is gated and the downlink DPCCH signal is not gated, or in the case in which the gating signal of the DSCI of the downlink is carried out, and the gating of the signal of the DSCCH of the uplink is not performed, but also in the case of gating of the data of the DSCCH as in downlink, and downlink.

As described above, the invention can provide an increase in system capacity by minimizing the time required for the process of re-establishing synchronization by the base station, reducing interference due to intermittent transmission of the UFCI of the uplink, increasing the battery life of the mobile station, and reducing interference by transmitting UMP bits for the uplink.

Despite the fact that the disclosure and description of the invention has been made with reference to certain preferred variants of its implementation, for specialists in the art it is clear that various changes can be made regarding its form and individual details, without going beyond the essence and scope of the invention defined by the claims.

Claims (31)

1. A method for transmitting control data, including bits of a pointer to a set of transport formats (USTF, TFCI), transmit power control (SAR, TPC) and pilot symbols, in a downlink for a mobile communication system, implemented in a base station, which contains the following steps: determine if there is data exchange information in the base station for transmission over the downlink and uplink, the random position selection device is activated to set random positions and a gated beat in the event that during a predetermined period of time there is no data of information exchange, when gating, the control data located in the gating beat with a given position is transmitted, and when gating, the control data located at other positions of the beat is cut off, in this case, the transmission frame includes many clock cycles, the clock in each frame is divided into many groups of gated clock cycles. 2. The method according to claim 1, in which the channel data contains a sequence of frames, and each frame includes many measures, the measures in each frame are divided into many groups of gated measures, and each group of gated measures has a gated measure with a given position. 3. The method according to claim 2, in which the frame contains 15 measures, the group of measures contains 5 measures, and the specified measure position is a measure position that is randomly selected from the measures contained in the measure group. 4. The method according to claim 2, in which the frame contains 15 measures, and each group of gated measures contains 3 measures. 5. The method according to claim 2, in which the random position selection device sets the position of the gated beat by the following steps: calculate the value 'x' by multiplying the system number of the frame (SNK) immediately before its transmission by a specific integer, N bits are selected, and the selection of the indicated N bits starts from a position that is spaced from the start point of the scrambling code of the previous group of gated measures on the 'x' elements of the code, and the position of the gated measure for each group of gated measures is set by performing modulo recount operations for the selected n bits, wherein said modulo counting operation is performed modulo equal to the number of clock cycles in the group of strobe clock cycles. 6. The method according to claim 2, in which the random position selection device sets the position of the gated beat using the equation below

where G is the group number of gated measures; S is the scrambling code; G _pre - the number of the previous group of gated measures; C ⁱ is the number of the binding frame (NSC) of the i-th frame represented in binary code

where

means the jth binary digit; K is the amount of displacement added to the input sequence; T is the reciprocal of the gating frequency. 7. The method according to claim 2, in which the random position selection device sets the position of the gated measure using the equation below for each group, except for the first group of gated measures and the last group of gated measures:

where A _j is the sequence obtained by shifting the fixed sequence A by j bits; C _i is the sequence obtained by repeating the number of the connecting frame (NSC); S _G - the number of measures in one group of gated measures; N _G - the number of groups of gated measures in a single frame. 8. The method according to claim 7, in which additionally the device for selecting a random position sets the position of the gated measure in the first group of gated measures, with the exception of the first measure. 9. The method of claim 8, in which the random position selection device further sets the position of the gated measure in the last group of gated measures in such a way that it is the last measure. 10. The method according to claim 2, in which the control data transmitted as a result of the gating comprises a pilot symbol and a SAR (transmit power control) bit. 11. The method according to claim 2, in which the control data transmitted as a result of the gating comprises a SAR bit (transmission power control) bit located in the gate with the specified position and a pilot symbol located in front of the gate with the specified position. 12. The method according to claim 1, in which in the absence of any data in the information exchange channel of the downlink communication channel and the uplink communication channel for a predetermined period of time, the base station transmits the gating information, which includes the gating start time and gating frequency. 13. A method for transmitting control data, including bits of a pointer to a set of transport formats (USTF, TFCI), transmit power control (SAR, TPC) and pilot symbols, in the uplink for a mobile communication system, implemented in a mobile station, which contains the following steps: determine whether there is information exchange information in the mobile station for transmission via the uplink to the base station; transmit to the base station a request for control gating yes data of the uplink communication channel in the event that for a predetermined period of time there is no data intended for transmission on the uplink data transmission channel, a random position selector is activated to set a random position of the gated clock when the mobile station receives information about gating, containing the start time of the gating and the frequency of the gating coming from the base station, when the gating is carried out the transmission of control data located in gating measure with a given position, and when gating control data located in other positions of the measure is cut off, while the transmission frame includes many measures, the measure in each frame is divided into many groups of strobe measures. 14. A method of gating data using a plurality of measures of an i-th frame from a frame stream in which each frame contains a plurality of measures, and the measures in each frame are divided into a plurality of groups of gated measures, each group of gated measures includes a number of measures, and the method comprises the step of: transmitting data at the beat position specified by the Equations (1) to (3) below:

where j is the number of the group of gated measures in the i-th frame; C _i is the sequence obtained by repeating the number of the i-th binding frame (NSC); A _j is the sequence corresponding to the j-th group of gated measures, and this sequence is obtained by shifting the given sequence by j bits; S _G - the number of measures in one group of gated measures; N _G - the number of groups of gated measures in a single frame. 15. A method of gating data using a plurality of measures of an i-th frame from a frame stream in which each frame contains a plurality of measures, and the measures in each frame are divided into a plurality of groups of gated measures, wherein each group of gated measures contains a number of measures, and the method contains the following steps: set the position of the gated measures from the groups of gated measures using the following formula for setting the position of the gated measure:

where s (i, j) is the position of the measure in the j-th group of gated measures of the i-th frame; j is the number of the group of gated measures in the i-th frame; C _i is the sequence obtained by repeating the number of the i-th binding frame (NSC); A _j is the sequence corresponding to the j-th group of gated measures, and this sequence is obtained by shifting the given sequence by j bits; during gating, the transmission of the UMP bit located in the gated beat with a predetermined position is transmitted, and when gated, the UMP bits that are in other clock cycles are cut off. 16. The method according to clause 15, in which the transmission step during gating comprises the following steps: during gating, the UMP bit is transmitted from the gated beat having a predetermined position, and during gating, the pilot symbol is transmitted in a beat that is located before the gated beat having set position. 17. The method according to clause 15, in which the operation of setting the position of the gated beat additionally contains the following step: set the position of the gated beat in the first group of gated ticks of the i-th frame using the following formula:

18. The method according to clause 15, in which the step of setting the position of the gated beat additionally contains the following step: set the position of the gated beat in the last group of gated ticks of the i-th frame as the last beat. 19. The transmission method in a mobile communication system, carried out by transmitting with gating the data of a dedicated physical control channel (VFC) on the uplink, which is a sequence of frames, and the frame contains many clocks, and the method contains the following steps: receive from the gating information base station, in which the gating start time and the gating frequency are indicated, transmit a signal for a predetermined period of time act on DPCCH random pattern, the random pattern is a clock gating, randomly selected among the transmission cycles. 20. The method according to claim 19, in which the formation of a random pattern is carried out by setting the position of the clock transmitted during gating using the following equation:

where j is the number of the group of gated measures in the i-th frame; C _i is the sequence obtained by repeating the number of the i-th frame; A _j is the sequence obtained by shifting the given sequence by j bits; S _G - the number of measures in one group of gated measures; N _G - the number of groups of gated measures in a single frame. 21. A transmitter of a base station in a mobile communication system in which data of an information exchange channel and data of a dedicated physical control channel (BFCI) contain sequences of frames, and each frame consists of a plurality of clock cycles, comprising a device for selecting a strobing position, by which, if not available, beforehand for a given period of time of any data intended for transmission over the information exchange channel, the position of the gated beat is set, by means of which the measures are divided into each frame into a plurality of groups of gated measures, moreover, the position of the gated measure in each of the indicated groups of gated measures is random; a transmission controller with gating, by means of which the control of the BFCI corresponding to the selected position of the gated beat is controlled. 22. The base station transmitter according to item 21, in which the gating position selection device sets the position of the gated beat by means of the following formulas (1) to (3):

where j is the number of the group of gated measures in the i-th frame; C _i is the sequence obtained by repeating the number of the i-th frame (NSC = i); A _j is the sequence corresponding to the j-th group of gated measures, and this sequence is obtained by shifting the given sequence by j bits; S _G - the number of measures in one group of gated measures; N _G - the number of groups of gated measures in a single frame. 23. The transmitter of the base station according to item 21, in which the device selects the position of the strobe sets the position of the strobe clock using the following formula:

where s (i, j) is the position of the measure in the j-th group of gated measures of the i-th frame; j is the number of the group of gated measures in the i-th frame; C _i is the sequence obtained by repeating the number of the i-th frame; and A _j is the sequence corresponding to the j-th group of gated clock cycles, and this sequence is obtained by shifting the given sequence by j bits. 24. The transmitter of the base station according to item 21, in which the device selects the position of the strobe sets the position of the strobe clock using the following formula:

where s (i, j) is the position of the measure in the j-th group of gated measures of the i-th frame; j is the number of the group of gated measures in the i-th frame; C _i is the sequence obtained by repeating the number of the i-th frame; A _j is the sequence corresponding to the j-th group of gated clock cycles, and this sequence is obtained by shifting the given sequence by j bits. 25. The base station transmitter of claim 21, wherein the gating position selector sets a gated clock position by the formula below:

where s (i, j) is the position of the measure in the j-th group of gated measures of the i-th frame; j is the number of the group of gated measures in the i-th frame; C _i is the sequence obtained by repeating the number of the i-th frame. 26. The base station transmitter according to claim 22, wherein the gating transmission controller during gating transmits a pilot symbol located in a clock located in front of a predetermined gated clock, as well as transmitting at least one transmission power control bit (SAR) ) and at least one bit of a pointer to a set of transport formats (USF) in a given gated beat. 27. A mobile station transmitter in a mobile communication system in which data of an information exchange channel and data of a dedicated physical control channel (BFCI) consist of a sequence of frames, and each frame consists of a plurality of clock cycles, comprising a device for selecting the position of a gated clock, by which, when receiving a mobile the gating information station, including the gating start time and the gating frequency that comes from the base station, set the position of the gated beat and there is a subdivision of measures in each frame into many groups of gated measures, and in each of the indicated groups of gated measures there is a position of a gated measure; a transmission controller with gating, by means of which, when gating, a signal is transmitted in a gating measure having a predetermined position, and another signal of a measure in the group of gated measures is cut off. 28. A transmitter performing gating of data of a plurality of measures of an i-th frame from a sequence of frames in which each frame consists of a plurality of measures, and the measures in each frame are divided into a plurality of groups of gated measures, each group of gated measures includes a number of measures, and the transmitter comprises a first memory device by which the sequence C _i is stored, said sequence being obtained by repeating the number of the i-th frame; a second memory device, by means of which the sequence A _j corresponding to the j-th group of gated clock cycles is stored, said sequence A _j being obtained using the sequence associated with the j-th gated clock cycle; a multiplier by which the exclusive-OR operation is performed on the sequences C _i and A _j ; a module for performing a modulation operation for performing a modulation operation for a signal received at the output of the multiplier, wherein the module value in the specified calculation operation modulo equal to the number of measures in the group of gated measures, resulting in the position of the gated measure in the j-th group of gated measures a transmission controller with gating, by means of which, during gating, data is transmitted in a gated clock having a predetermined position, and data in other clocks from the group of gated clocks is cut off. 29. The transmitter of claim 28, wherein the strobed transmission controller transmits a transmit power control (SAR) bit in a gating clock having a predetermined position and transmitting pilot symbols of a clock in front of the gated clock having a predetermined position. 30. The transmitter of claim 28, wherein the modulo recount operation device sets the position of the gated beat in the first group of gated ticks so that it is not the first beat. 31. The transmitter of claim 28, wherein the modulo recount operation device sets the position of the gated beat in the last group of gated ticks in such a way that it is the last beat.

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