RU2258310C2 - Device and method for controlling power of shared direct communications channel in mobile communication system - Google Patents

Abstract

FIELD: radio engineering.

SUBSTANCE: user equipment generates information for controlling power of transfer via shared communications channel on basis of channel state, determined by power of receipt of shared channel of pilot-signal, received from node B, sending along shared communication channel to user equipment and then sends power control information to user equipment.

EFFECT: higher precision, higher efficiency.

6 cl, 22 dwg

Description

Technical field

The present invention relates to controlling transmit power in a forward channel shared channel (SCL) in an asynchronous mobile communication system, and more particularly, to an apparatus and method for controlling transmit power for a user equipment (UE) in the field of handover.

State of the art

The Shared Direct Link Channel (SCL) used in the promising European asynchronous mobile communication system, known as Code Division Multiple Access (W-CDMA), is shared among many user devices. SKPL is designed to transmit packet data or other data with a high transmission rate to the UE in the frames of the radio signal with a duration of 10 ms. SCPL supports a variable data rate for data transmitted at the frame level, and can be controlled by power based on time intervals (frame segments) like a dedicated channel (VC) installed between the node B and PU in the W-CDMA system. The radio signal frame is a data block of a transmitted signal with a duration of 10 ms for W-CDMA and includes 15 time intervals. SCPL transmits only user data, and its power control is performed through a dedicated forward link channel (VKPL), assigned in conjunction with SCPL. SCPL can be transmitted to a separate PU, and the time of transmission of SCPL to PU is planned at a higher level.

To explain the SCPL, its structure is described below with reference to figa. In FIG. 1A, reference numeral 101 denotes an SCPL radio signal frame, and reference numeral 103 denotes a time interval. The frame 101 of the SCPL radio signal includes 15 time slots, and one time slot 103 SCPL has a duration of 2560 code elements. The amount of information transmitted in the time interval 103 SCLP is inversely proportional to the coefficient of expansion of the RR applicable to the time interval 103 SCLP and is in the range from 4 to 256.

FIG. 1B illustrates the structure of the VCL which is assigned to the control panel together with the SCPL shown in FIG. 1A, by the node B. In FIG. 1B, reference numeral 111 denotes a radio signal frame of the VCL. One time interval VKPL includes the fields Data 1 113, UMP (Transmission Power Control) 112, UOF (Index of combining transmission formats) 114, Data 2 115 and Pilot 116. The time interval VKPL may have a different structure in accordance with the lengths of the fields Data 1 , UMP, UOFP, Data 2, Pilot.

Data 1 113 and Data 2 115 form a dedicated forward link physical data channel (VFKDL) for transmitting user data and signaling information from a higher layer. UMP 112, UOFP 114 and Pilot 116 together form a dedicated physical control channel direct communication line (VFKUPL). UMP 112 transmits a command to control the transmit power of the reverse link directed from the PU to the node; UOFP 114 transmits a code word notifying the transmission of transport channels with different transmission rates on the VCPL when the need arises, and Pilot 116 provides the ability for the PU to measure the transmit power of the forward link channel to control the forward link channel power. Transport channels, as described by UOFP 114, function to connect a higher layer and a physical layer that physically controls the transmission of data.

To control the power of the SSCL in the W-CDMA system, the UE receiving the VCPL 111 signal measures the Pilot 116 shown in Fig. 1B and transmits the SAR command to the Node B. The UE determines, based on the measurement data of the pilot signal, the reception power is acceptable. In accordance with the power control command from the control unit, the Node B controls the transmit power of the VCL and transmits the transmit power of the SCPL to an appropriate level, taking into account the transmission speeds of the data of the VCL and SCPL.

The difference in transmission power between the HCPL and the SCPL depends on the transmission rates of the channels and can be easily calculated by known procedures.

The transmission of the SAR field in the allocated time interval from the control unit allows you to control the power for the VCPL based on the time interval. This means that the transmit power of the DSCH can also be controlled based on the allocated time slots.

Figure 2 illustrates the signal flow of the reverse and forward communication lines in the case when the PU receiving the SSCL signal is in the zone of flexible handoff (GTP). For simplicity of description, a system with two nodes B is considered. A flexible handover occurs when the UE moves to the area where it receives a signal from both node B1 and node B2. In the GPO zone, the control panel communicates with both the source node B1 and the target node B2 for a predetermined time. When the PU leaves the service area of the source node B1, the signal quality from the source node B1 reaches an unacceptably low level. The PU then releases the channels from the source node B1, which gives poor communication quality, and connects the call to the target node B2, which provides good signal quality. This procedure is defined as flexible handoff.

If the PU reaches the GPO zone, it summarizes the transmit power of the source node B1 and the target node B2 and sets their transmit power to an average value in order to reduce the transmit power of the nodes B for handover of the call without interruption. As a result, the transmit power of nodes B, transmitting signals to the controllers within their coverage area, decreases, which reduces the effect of mutual interference on neighboring controllers and nodes B.

This GPO procedure is described in more detail with reference to FIG. 2. The node B1 201 transmits the SCPL and the corresponding VCPL to the control panel 211, and the node B2 begins to transmit the CCHF to the control panel 211 as the control panel 211 moves towards it. A set of nodes B capable of transmitting signals to PU 211 is called an active set. When the PU 211 receiving the SCPL enters the GPO zone, the following problems may occur.

When the UE 211 receives both SCPL and WPL from the node B1 201, it receives only the WCPL from the node B2 203. The SCPL does not support the GPO for the following reasons: (1) it transmits high speed data relative to the BCPL, taking up more channel resources; (2) all nodes B included in the active set must be provided with a shared channel support algorithm in order to support GPC based on SCPL, which requires synchronization between nodes B; (3) the asynchronous operations of the nodes B included in the asynchronous mobile communication system can cause synchronization problems, and (4) the accurate planning of the used time points for the UE, due to the properties of the DSCH, makes it difficult for the other node B to transmit the DSCE to the UE.

The HCPLs received from node B1 201 and from node B2 203 are flexibly combined for interpretation in PU 211. Such flexible combining is the process of combining signals received in PU 211. The purpose of flexible combining is to reduce the effect of interference on received signals by summing the same information received on different signal propagation paths before interpretation. A flexible combining operation is only feasible when the control unit 211 receives the same information from different nodes B. If different information is received from each node B, then the flexible combining simply increases the noise components. With the exception of UMP 112, VKPL are combined in a flexible manner. When the PU 211 moves, the signal level of the node 201 in the PU 211 may be high, while the signal level of the node 203 may be small and vice versa. In view of the resulting differences between the SARs, the SAR fields in the VCPL signals are interpreted separately without flexible combining.

When determining the SAR for a dedicated reverse link channel (VCOL), as shown in FIG. 2, the UI 211 sums the signals received from the Node B1 201 and the Node B2 203, and checks if the received signal strength is acceptable. When determining the transmit power of the SCLP directed to the control unit 211 in the GPO zone, problems may arise, as described below, in determining the SAR based on a simple sum or a weighted sum of received signals.

In the case where the control unit 211 is located outside the GPO zone and, therefore, communicates only with the source node, the transmit power of the SCPL for the control unit 211 is determined by summing the transmit power of the VCPL with a value that reflects the difference between the data rates in the SCPL and in the VCPL. Those. SCPL transmission power is associated with HCPL. When the transmission power of the VCPL increases, the power of the SCPL also increases and vice versa. SCPL can be transmitted to the control unit 211 adaptively with respect to the channel conditions between the source node B1 201 and the control unit 211. However, if the control unit 211 is located in the GPO region, then signals from other nodes B included in the active set, as well as a signal from the initial node B1, transmitting SCPL, participate in the determination of SAR for VKOL.

As shown in figure 2, the transmission power of the SCPL should be determined taking into account the conditions of the channel between the PU 211 and the node B1 201, and the transmission power of the VCPL should be determined taking into account the conditions in the channel between the PU 211 and the node B1 201 and the PU 211 and the node B2 203. In known solutions, since the transmission power is determined by summing a predetermined power value with the transmission power of the VCL, the application of SAR in accordance with the conditions of the additional channel between the PU 211 and the node B2 203 leads to the transmission of the SCL with a power higher or lower than the desired level i am power. Another problem is discovered when the node B1 201 transmits the VCPL with less transmit power to the UE 211 in the field of GPO than is required for the transmission of the VCPL by themselves. In this case, the node B1 201 cannot apply the difference in the transmit power between the SCPL and the VCL for a region other than the GPO zone.

Various methods have been proposed to solve problems associated with transmit power of SCPL in the GPO zone. According to one of the proposed methods, illustrated in FIG. 3, station diversity transmission (RPSS) according to W-CDMA standards is used to control the transmit power of the SSCL. To illustrate, it is assumed that the active set includes two nodes B. In the RPSS scheme, a temporary identifier (ID) is assigned to each node B of the active set for PU 311 located in the GPO zone, and node B is selected that can provide the best signal quality for PU 311. Only the selected node B1 transmits the VFKPL to the PU 311, and the other node B2 transmits only the VFKPL to the PU 311, while reducing mutual interference caused by the simultaneous reception of the VFKPL in the PU 311 from all nodes B of the active set to support the GPO. The node B transmitting the VFKDPL is called the main node B, which is periodically updated based on the measurement information in the control unit 311. The main node B is updated by transmitting its temporary ID to other nodes in the active set.

To control the transmit power of the SCPL using RPSS, the PU 311 receives signals of the common pilot signal channels (OKP) from node B1 301 and node B2 303 and determines the main node B by comparing the levels of pilot signals of the OKP. Then, the control unit 311 transmits a temporary ID of the main node B to each node B. The node B transmitting the DSCH, from among the nodes B receiving the temporary ID, receives the temporary ID several times over a predetermined period and checks how many times the temporary ID points to node B. Node B determines whether to transmit SCPL in the mode of the main node B or in the mode of the non-main node B.

For example, node B1 301 transmits VKPL and SCPL to PU 311. Node B2 303 is again included in the active set of PU 311 and transmits only VKPL to PU 311. After comparing OKP signal levels from nodes in PU 311, it transmits a temporary ID of the main node to node B1 301 as the main node and to the node B2 303. If the temporary ID points to the node B1 301, then the node B1 301 determines the transmit power of the SCPL taking into account the SAR field of the VKOL signal and the factors caused by the movement of the PU 311 into the GPO zone, for example, a power shift reflecting a decrease transmission power VKPL. Those. it is determined whether to increase the transmission power of the SCPL or reduce it based on the SAR received from the control unit 311. In the case where B1 301 is the main node B, the power control of the control system is performed in the same way as for the control unit 311 in a zone other than the zone GPO, except that the required power shift is applied, due to factors such as a reduction in transmit power of the HAM.

On the other hand, if the node B2 303 is selected as the main node B, the node B1 301 transmits the DSCH with a fixed power shift applied to the PU 311, assuming that the PU 311 becomes more remote or that the conditions in the channel are getting worse. Those. the node B1 311 transmits the SCPL with a pre-set power offset applicable to the PU 311, ignoring the SAR field received from the PU 311.

The above RPSS based transmit power control has the disadvantages indicated below. (1) When the PU 311 enters the GPO zone, the transmit power of an individual VCPL from each node B is less than the transmit power of the VCPL transmitted by only one node B, and the difference varies according to the number of nodes B included in the active set. In addition, since the SAR field transmitted from the control unit 311 to control the power of the forward link is determined after the VCPLs from the nodes B are combined, and then it is determined whether the signal quality is acceptable, the conditions existing in the channel between the controllers influence the determination of the SAS 311 and other nodes In, as well as the conditions existing in the channel between the PU 311 and the node In, transmitting SCPL. Therefore, although the node B transmitting the SCPL is the main node B, there may be a discrepancy between the transmit power of the SCPL determined on the basis of the SAR field of the SCOL signal and the desired transmit power of the SCPL. (2) When the control unit is located in the GPO zone, the node B transmitting the DSCH transmits the DSCH with a different fixed power shift according to whether it is the main node B or not. If the node B transmitting the SCPL is not designated as the main node B, when the receive power balance is set among the nodes of the active set, the SCPL may be transmitted with excess power. If the node B transmitting the SCPL becomes the main node B, the SCPL can be transmitted with low power. The use of a different fixed power shift, corresponding to the designation of the node B as the main node or the absence of such a destination, may cause discrepancies between the actual transmit power of the SCPL and the desired transmit power of the SCPL.

SUMMARY OF THE INVENTION

Therefore, the present invention is the creation of a device and method for controlling the transmission power of the SCPL signal in the PU receiving the SCPL signal in the GPO zone.

In addition, an object of the present invention is to provide an apparatus and method for controlling transmit power of an SSCL using a relative power offset defined in a UE receiving a SSCL signal.

In addition, it is an object of the present invention to provide a method for determining a power shift, taking into account the flexible combination in the control unit of the amplification of the VCPL signals and the distance between the control unit receiving the SCPL signal and the node B, in order to control the transmission power of the SCPL signal transmitted from the node B.

In addition, an object of the present invention is to provide a method for determining power shifts by measuring levels of GST and pilot signals of dedicated channels received from active set nodes B in a UE receiving an SSCL signal in order to control the transmit power of a SSCL transmitted from node B.

In addition, an object of the present invention is to provide a device and method for transmitting information about a power shift in a feedback information field of a VKOL signal from a control unit receiving an SCPL signal in order to control the transmit power of the SCPL signal transmitted from node B.

Furthermore, it is an object of the present invention to provide an apparatus and method for encoding power shift information in order to enable a UE receiving an SCPL signal to reliably transmit power shift information for use in controlling transmission power of a SCPL signal.

In addition, an object of the present invention is to provide an apparatus and method for decoding received power shift information to control the power of an SQF signal in a Node B.

In addition, an object of the present invention is to provide a device and method for directly transmitting a power control command in a feedback information field of an SCOL signal from a control unit receiving an SCPL signal to control the power of the SCPL signal.

In addition, an object of the present invention is to provide a method for determining a power control command for controlling the power of an SCPL signal in a feedback information field of an SCOL signal in a control unit receiving a SCRL signal by measuring the levels of the GPR signal and the signal of a dedicated pilot channel from each node B included into the active set of PU.

The above and other tasks are solved in the proposed device and method for controlling the transmission power of the SCPL signal in a mobile communication system.

In the method for controlling the transmit power of the SCPL signal, the UE generates information for controlling the transmit power of the SCPL signal based on the channel conditions determined by the received power of the OKP signal from the node B transmitting the SCPL to the PU, and then transmits the power control information to the node B.

In the device for controlling the transmission power of the SCPL signal, the signal level meter in the pilot channel measures the OKP signal levels from nodes B transmitting the SAR field in the ON-signal to the control panel. The OKP signal level change detector checks whether the OKP signal level has increased or decreased from the node B transmitting the SCPL signal to the control panel. The shift determiner determines the shift in accordance with the verification result obtained from the detector for changing the level of the SSCL signal, and the transmitter transmits the shift information received from the shift determinant in the VCOL signal.

Brief Description of the Drawings

The above and other objectives, features and advantages of the present invention are explained in the following detailed description, illustrated by drawings, which show the following:

Figa and 1B - structure SCPL and VKPL, respectively;

Figure 2 - signal flow of the reverse and direct communication lines used to explain the problems of power control SCPL in the area of the GPO;

Figure 3 - signal flow of the reverse and direct communication lines used to explain the problems of power control SCPL based on RPPS in the area of the GPO;

Figure 4 - signal flow of the reverse and forward communication lines used to explain the problems of power control SCPL in the area of the GPO according to the present invention;

5A and 5B are the structures of the IOS field (feedback information) and the VOL, along which the IOS is transmitted;

6 is a block diagram of a receiver of the PU corresponding to a possible embodiment of the present invention;

7 is a block diagram of a transmitter of the PU corresponding to a possible embodiment of the present invention;

FIG. 8 is a block diagram of a receiver for a node B in accordance with a possible embodiment of the present invention; FIG.

Fig.9 is a block diagram of a transmitter for a node In, corresponding to a possible variant of implementation of the present invention;

FIG. 10 is a flowchart illustrating an algorithm for determining a relative power offset for a DSCH in a UE according to a possible embodiment of the present invention; FIG.

11 is a block diagram illustrating a direct transmission algorithm of the SCPL power control command in the UE according to another embodiment of the present invention;

12 is a flowchart illustrating an operation of receiving information of relative power shift or SAR for SSCLs from a UE in a terrestrial radio access network of the Universal Mobile Telecommunication System (UTRAN);

13 is a graph showing the principle of shifts used in accordance with a possible embodiment of the present invention;

14 is a block diagram of an encoding device for generating an (n, 3) code and an (n, 4) code in accordance with a possible embodiment of the present invention;

FIG. 15 is a block diagram of a decoding apparatus for decoding an (n, 3) code and an (n, 4) code in accordance with a possible embodiment of the present invention; FIG.

FIG. 16 is a block diagram of a simplex coding device for generating a (7, 3) code in accordance with a possible embodiment of the present invention; FIG.

17 is a block diagram of a simplex coding device for generating a (15, 4) code in accordance with a possible embodiment of the present invention;

Fig. 18 is a block diagram of a simplex coding device for generating a (15, 4) code and a (7, 3) code in accordance with a possible embodiment of the present invention;

FIG. 19 is a flowchart illustrating an algorithm for estimating conditions in a channel and reporting channel conditions to a UTRAN for use in determining a power offset for a DSCH in accordance with a third embodiment of the present invention; FIG.

FIG. 20 is a flowchart illustrating an operation of calculating a power shift for a DSCH based on channel condition information received from a UE in the UTRAN in accordance with a third embodiment of the present invention.

Detailed Description of Preferred Embodiments

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail so as not to obscure the invention with irrelevant details.

Figure 4 presents an example configuration of a system with two nodes included in the active set, to clarify the essence of the present invention. According to figure 4, the node B1 401 transmits VKPL and SCPL to the PU 411, and the node B2, newly included in the active set, transmits only the VCPL to the PU 411. The PU 411 transmits the VCPL to the node B1 401 and the node B2 403 without any of them differences. In well-known solutions, when PU 411 enters the GPO zone, PU 411 receives OKP from node B1 401 and from node B2 403 together and measures the levels of OKP signals to select the main node B from nodes B. PU 411 transmits a temporary ID of node B indicated in as the main node B, in the feedback information field (IOS) of the VKOL signal. Field IOS has a length of 2 bits, as shown in figa. As shown in FIG. 5A, reference numeral 501 denotes the S field of the IOS field that the UE 411 transmits to the Node B when the antenna diversity transmission mode is used in the W-CDMA system. Reference numeral 503 denotes a field D of the IOS field, which the UE 411 transmits to the node B when the RPSS mode is used in the W-CDMA system. Field S 501 has the form 0 or 1. If field S is bit 0, this means that the antenna diversity transmission mode is not used. Field D is 0 or 1 or 2 bits long. This occurs when the field S has a value of 0, since the field D is selected depending on the field S. If the field D 503 corresponds to 0 bits, this means that the RPPS mode is not used. In case of 1 bit, the RPSS is used in conjunction with the antenna diversity transmission mode. And in the case of 2 bits, only the RPPS mode is used. If the RPPS mode is used, the IOS field transmits a codeword representing the temporary ID of the main node B. Tables 1 and 2 below show the RPPS codewords used in accordance with these W-CDMA standards, which can vary depending on the IOS length and conditions in the node channel In the active set of controllers 411. The bit of the code in brackets is omitted if the code word cannot be transmitted completely in one frame, since the SCPL radio signal frame includes 15 allocated time intervals.

Table 1 ID Code ID symbol Long code Middle code Shortcode a 000000000000000 (0) 0000000 00000 b 101010101010101 (0) 1010101 01001 from 011001100110011 (0) 0110011 11011 d 110011001100110 (0) 1100 110 10010 e 000111100001111 (0) 0001111 00111 f 101101001011010 (0) 1011010 01110 g 011110000111100 (0) 0111100 11100 h 110100101101001 (0) 1101001 10101

Table 1 shows the RPSS codewords when a 1-bit IOS is used, i.e. the RPSS field is received along with diversity transmitting antennas.

table 2 ID Code ID symbol Long code Middle code Shortcode a (0) 0000000
(0) 0000000 (0) 000
(0) 000 000
000 b (0) 0000000
(1) 1111111 (0) 000
(0) 111 000
111

from (0) 1010101
(0) 1010101 (0) 101
(0) 101 101
101 d (0) 1010101
(1) 0101010 (0) 101
(1) 010 101
010 e (0) 0110011
(0) 0110011 (0) 011
(0) 011 011
011 f (0) 0110011
(1) 1001100 (0) 011
(1) 100 011
one hundred g (0) 1100 110
(0) 1100 110 (0) 110
(0) 110 110
110 h (0) 1100 110
(1) 0011001 (0) 110
(1) 001 110
001

Table 2 shows the RPSS codewords when using a 2-bit IOS, i.e. field RPSS taken separately.

According to the prior art, Table 1 or Table 2 are applied selectively according to the mode used, and the codewords of Table 1 or Table 2 are allocated as temporary IDs between nodes In the active set. The primary node B is reassigned for each predetermined period set from a higher level, and the UE 411 transmits a temporary ID of the primary node to the nodes In the active set. If the node B transmitting the SCPL is the main node B, then the node B determines the transmission power of the SCPL in accordance with the SAR field received from the PU 411. On the other hand, if the node B is not the main node B, it determines the transmission power of the SCPL according to the fixed the power shift and the SAR field received from the PU 411. The problem inherent in the prior art is that the SAR field transmitted from the PU 411 is not determined solely by the signal from the node B transmitting the SSCL, and therefore, the use of a fixed power shift for SSCL maybe with lead to excess or insufficient SCPL power.

Figv illustrates the structure of a dedicated physical control channel reverse link (VFKUOL), through which UP 411 transmits SAR. In FIG. 5B, reference numeral 511 denotes one BFCUOL frame in a dedicated reverse link channel (BSCOL), including the PILOT 521, UOFP 522, IOS 523, and SAR 524 fields in each allocated time interval. The structure of VFKUOL changes with changing field lengths PILOT 521, UOFP 522, IOS 523 and UMP 524. PILOT 521 is used for node B to evaluate the channel conditions between the PU 411 and node B and measure the signal level from the PU 411. The UOFP 522 transmits the code word UOFP , notifying of the transfer of transport channels with different data rates on a dedicated physical channel data transmission reverse link (VFKDOL). IOS 523 transmits feedback information about the diversity of transmitting antennas and RPPS, and SAR 524 transmits SAR, which is determined by receiving signals from nodes In the active set and determining in PU 411 whether the signal strength of the forward link is high or low.

As shown in FIG. 5B, the UE 411 transmits UMP over the BKUOL regardless of the number of nodes B that receive the BKUOL. Thus, the active set nodes B increase or decrease their transmit power nonselectively, based on the SAR field 524 received from the UE 411. The UU 411 also determines whether the forward link signal power is high or low by combining all received VCPLs. Accordingly, if the PU 411 receiving the SCPL is included in the GPO zone, it determines the SAR field 524 by combining the VCPL from the required node B associated with the SCPL with the VCPL from other nodes B of the active set, although the first is the highest in power. Although there is no need to increase the transmission power of the VCPL due to the good conditions in the channel between the node B transmitting the SSCL and the UE 411, poor conditions in the channel between the UU 411 and other nodes B can sometimes lead to the transmission of the SAR field carrying the command to increase the transmission power from the UU 411. Then, the node B transmitting the SCPL increases its transmit power in accordance with the value of the SAR field 524 from the control unit 411, which leads to excess power of the SCPL. Although the node B transmitting the SSCL uses a different fixed shift value to solve this problem according to whether it is the main or non-main node, the same problem of excess or insufficient power of the SSCL also arises from the use of fixed power shifts.

In the present invention, the RPSS codes shown in Table 1 and Table 2, or codes generated by another encoding method, are transmitted in accordance with information about the relative power shift or channel conditions between the control units and active set nodes B, as estimated in the control units. Or, the power control command only for SCPL is directly transmitted to the IOS field S 501, as shown in FIG. 5A.

According to figure 4, PU 411 measures the levels of the OKP and the selected pilot signals VCPL received from the node B1 401 and node B2 403. Then the PU 411 transmits the relative power offset or command UMP to control the power SCPL to the node B1 401 in the IOS field of the signal VFKOL . The node B2 403 ignores the information of the IOS field, since it does not apply to the node B2 403. After receiving the information of the relative power shift or the SAR command only for SCPL, the node B1 401 determines the transmit power of the SCRL based on the received information. If the relative power offset information is transmitted by the RPSS codeword shown in Table 1 or in Table 2, then the transmission period changes in accordance with the length and type of the RPSS codeword. The transmission period is the shortest when using a 2-bit IOS field. As can be seen from Table 2, a total of 6 bits are transmitted in three allocated time intervals, 2 bits per time interval, for a short RPSS codeword. The transmission period is the longest using a 1-bit IOS field. As can be seen from Table 1, a total of 15 bits are transmitted in 15 allocated time slots, i.e. in one frame, one bit per interval, for a long RPSS codeword.

In determining the relative power offset in accordance with the present invention, many factors should be considered. These factors are illustrated using Fig and are determined in accordance with the following ratio:

The transmit power of SCPL in the field of GPO is calculated using equation (1). If SCPL is allocated for PU 411, then the transmit power of SCPL is determined taking into account the transmit power of the HCPL allocated together with SCPL in the GPO zone; a power shift corresponding to the total gain resulting from combining the VCPL signal with the VCPL signals received from other nodes B included in the active set in the GPO zone; a power shift corresponding to a change in the transmit power of the VCPL due to a change in the propagation conditions of the signal in the channel between the control unit 411 and the node B transmitting the SSCF.

If PU 411 is not in the GPO zone, then the transmit power of the SCPL is determined by the transmit power of the HCPL; a power shift corresponding to the transmission rates of the SCPL and HCPL signals, and a power shift due to a change in the transmission power of the HSCP due to a change in the propagation conditions of the signal in the channel between the UE 411 and the node B transmitting the SCPL. The change in transmit power of the SCPL signal is determined based on the SAR field received at node B from the control unit 411.

Equation (1) is explained below with reference to Fig.13.

13 is a graph showing changes in transmit power of a node B transmitting DSCH. Also shown are the factors necessary to determine the transmit power of the DSCH, at time t, indicated by 1350. Curve 1302 represents the transmit power of the DSCH, which should be transmitted from node B when the control unit is in an area other than the GPO zone, and curve 1312 represents SCPL transmission power required when the SC is in the GPO zone or when the SC is in a region other than the GPO zone with a relative power offset specified for the SCPL. Curve 1301 represents the transmit power of the SCRL from the node B, which changes as the UE moves to the GPO zone, and curve 1311 represents the transmit power of the SCPL without the relative power shift when the PU moves to the GPO zone. The _{data_speed_shift} 1331 shift represents the power shift due to the difference in the data rates of the SSCL and the VCPL applied from the beginning of the transmission of the SSCL and calculated in the Node B. The shift of the data_submission_ _speed 1331 can be changed as the data transmission speed of the SSCL and the VCPL is and ranges from 0 to 18 dB Shift _{summarnoe_usilenie} 1332 is the power offset corresponding to the total amplified signals VKPL when the UE is in GAP zone defined number of Node Bs included in the active set, and the difference in received power VKPL signals received at the UE from the Node Bs at time t. The offset _total gain 1332 is usually in the range of 1 to 3 dB. The _{channel_condition} 1333 shift is the power offset specified for the HAML according to the change in the propagation conditions of the signal in the channel between the control panel and the node B transmitting the SCHL at time t. The shift of _{channel_condition} 1333 is determined by the interpretation of the OKP signal from the node B transmitting the DSCH, or by the separate interpretation of the dedicated pilot signal HCPL transmitted from the node B transmitting the SCPL to the UE. The shift of _{condition_channel} 1333 depends mainly on the distance between the node B and the _{control panel} and is inversely proportional to the fourth power of the distance. If the active set has one node B, i.e. If the _control unit is located in a region other than the GPO zone, then there is no need to calculate the Shift of _{condition_channel} 1333 if node B uses the SAR field of the signal transmitted from the _control unit. However, if there are two or more nodes B in the active set, then the Shift of _{condition_channel} 1333 is calculated on the basis of measurements of the signal level in the UE, since the node B transmitting the SCPL cannot use the SAR field of the received signal when determining the transmit power of the SCPL.

Curve 1312 represents the corresponding SCPL power required for the SCL located in the HLP zone, and the present invention enables the node B transmitting the SCLP to transmit the SCPL signal to the SC with a power corresponding to curve 1312. If the SC moves to the GPO zone without using relative power shift, as in the solutions known from the prior art, the node B transmits the SCPL signal to the control unit in accordance with curve 1311. Curve 1311 is similar in shape to curve 1301, which represents the transmit power of the VKPL signal, Wow in PU in the area of the GPO. Curve 1302, representing the transmission power of the VCPL for a region other than the GAP zone, changes in accordance with curve 1301 if the UE moves to the GOC zone due to the flexible combination of powers.

Curve 1302 represents the transmit power of the VCPL signal, reflecting the change in the propagation conditions of the signal in the channel between the node In and PU. This curve is used to determine the transmit power of SCPL in a region other than the GPO zone.

In accordance with the present invention, the UE calculates the corresponding relative power shift and transmits it to the node B, so that the node B can use the SCPL transmission power curve 1312 in accordance with the curve 1302. Since the shift of the data_specific _rate 1331 is determined by the difference between the SSCL and HCPL data rates and The known node, then the UE does not transmit the shift _{skorost_peredachi_dannyh} 1331 to node B. UE determines the relative power offset considering only _{summarnoe_usilenie} shift values 1332 and 1333 and shift _{usloviya_kanala} transmits relative shift of power in the IOS field of the VFKUOL signal.

Shift _{summarnoe_usilenie} 1332 depends on the received power VKPL signals received from the Node Bs in the active set and the number of nodes B. The number of nodes is well known in the UE and the received power of the individual signals VKPL can also be calculated in the UE. After the smallest and largest values of the total gain are initially determined depending on the number of nodes In the active set, the received power of the HCPL signal received from each node In the active set is calculated. Thus obtained _{summarnoe_usilenie} shift value 1332. Assuming that the active set has two Node B integrated gain VKPL signals from the two Node Bs in the range of 1 to 3 dB, and each signal received power VKPL is identical. Then the value of the shift _{total_} amplification 1332 has a maximum value of 3 dB.

The shift of _{channel_condition} 1333 is determined in accordance with the propagation conditions of the signal in the channel between the UE and the node B transmitting the SSCL signal. The propagation conditions of the signal in the channel are determined in accordance with the distance between the control panel and the node B transmitting the SSCL, multipath fading, etc. The _{channel_condition} 1333 shift can be determined in various ways: using the OKP signal received at the UE, using the dedicated VKPL pilot received at the UE, as well as using both of these methods.

In the first method for determining the propagation conditions of a signal in a channel, the control unit can measure the levels of all the signals of the OKP received from the active set nodes B on a frame-based basis and report them to the UTRAN system, as stipulated by the WCDMA standard (W-CDMA ) The UTRAN determines the power offset for the DSCH by comparing the GST signal from the host B transmitting the DSCH signal with the GST signals from all other nodes B. More specifically, the UE measures the level of the GST signal from the host B transmitting the DSCH signal in each frame. If the signal level rises, then the shift of the _{condition of channel} 1333 decreases and vice versa. The initial value of the shift of the _{condition of the channel} 1333 can be determined based on the level of the signal OKP, measured when the PU enters the zone of the GPO. The initial value can be set to 0 dB. If the _{control unit} remains in the GPO zone, then the shift of _{condition_channel} 1333 changes with a change in the level of the signal of the OKP measured at the frame level. For example, if the current level of the OKP signal differs from the level of the signal of the OKP measured 1 frame earlier by 1 dB, then the _{channel_condition} 1333 shift is set to 1 or 0/5 dB or any other value. Shift of _{condition_channel} 1333 is of different importance for different GPO zones, roughly classified as a zone of the business center of the city, a zone of other central parts of the city and a suburb zone. Given one of the factors determining the shift of the _{condition of channel} 1333, i.e. the distance between the control unit and the node B transmitting the SCPL, the level of the OKP signal is inversely proportional to the fourth or fifth degree of distance in the business center of the city, the third degree of distance in the remaining central parts of the city and the square of the distance in the suburban area. The measurement of the level of the signal OKP from another node In the active set can be used to determine the value of the shift of the _{condition of the channel} 1333 to improve the accuracy of this method. The difference between the levels of two OKP signals is defined as the difference between the level of the OKP signal of node B transmitting the SCPL signal and the largest of the levels of OKP signals from other nodes B of the active set. An example of determining the value of the shift of the _{condition of channel} 1333 using the difference in signal levels of the OKP is presented below in Table 3.

Table 3 Increase / decrease the difference in the levels of the signal OKP Change in the OKP signal from the node transmitting the SCPL signal The shift according to the changing conditions in the channel between the control unit and the node B transmitting the SCPL signal + Is present The shift increases relative to the previous shift Is absent Same shift - Is present The shift decreases relative to the previous shift Is absent Same shift

Table 3 illustrates a method for determining the magnitude of the shift of the _{condition of the channel} 1333 using the difference in the levels of the signal OKP. An increase in the current difference between the levels of the OKP signal relative to its previous value means that the control unit is moving away from the node B transmitting the SCPL signal, or the signal level of the OKP of another node B of the active set, measured in the control unit, has changed. If the OKP signal level of the node B transmitting the SSCL signal has decreased, then the UE uses a shift greater than the shift of the _{condition of channel} 1333 for the previous frame. If the OKP signal level has not changed, then this means that the signal level of the OKP signal of node B, which does not transmit the SCPL signal, has changed. In this case, nothing is done to change the setting of the transmission power of the SCPL, and therefore the shift of the _{condition of the channel} 1333 corresponding to the previous frame is saved.

In the method described above, the initial value for the value of the shift of the _{condition of the channel} 1333 may be a value measured when the PU initially enters the area of the GPO. In this case, it can be set to 0 dB.

In accordance with the second method for determining the magnitude of the shift _{condition_channel} 1333 uses the level of the dedicated pilot signal VKPL received in PU.

Since the measurement period of the signal is equal to one frame in the first method, it may have limitations in effective adaptation to rapid changes in the conditions of signal propagation in the channel. The level of the selected pilot signal VCPL is measured if there is a need for a quick reflection of changes in the propagation conditions of the signal in the channel, and the update period of the RPSS code is small. This procedure is performed in the same way as in the first method. That is, when the level of the dedicated H-pilot pilot signal from the Node B transmitting the DSCH increases, a shift is applied that is smaller than the shift of the _{condition of channel} 1333 for the previous frame. And if it decreases, then a shift is applied that is greater than the shift of the _{condition of channel} 1333 for the previous frame. To increase reliability, the level of the allocated SSCL pilot signal received from another active set node B can be used in the same manner as in the first method.

The third method for determining the magnitude of the shift of _{condition_channel} 1333 is based on the use of the first two methods. The first method is suitable for the case of smaller changes in the conditions of signal propagation in the channel and a large update period of the SPSS, and the second method is suitable for the case of large changes in the conditions of signal propagation in the channel and a large update period of the SPSS. The third method is intended to take advantage of the first two methods in combination.

To clarify the third method, suppose that the RPPS code consists of 10 bits, the IOS field D is 2 bits, and the update period of the power shift value is 5 time intervals. PU measures the level of the VCPL signal in each of 5 time intervals. The UE calculates the _{channel_condition} 1333 shift by applying the maximum weight to the last measurement and then calculates the relative power shift. The control unit transmits a relative power offset to the node B, which transmits the SCRL in the following 5 time slots. After transmitting the relative power offset twice, the UE determines a new relative power offset with the value of the _{condition_channel} shift 1333 determined based on the signal strength of the TCH, and transmits the relative power offset to the node B transmitting the DSCH. The purpose of this operation is to compensate for the relative power shift in case of incomplete reflection of the real state of the channel due to the fact that the number of bits of the selected pilot signal in the VCPL is less than the corresponding number in the OKP signal.

The power shift compensation interval using OKP can be set by agreement between the control panel and a higher level of node B.

The actual value of the shift transmitted from the control unit to the node B transmitting the SSCL for use in determining the relative power shift for the SSCL is equal to the sum of the shift _{total gain} 1332 and the _{channel_shift} 1333. If this sum is defined as the SSC transmission power shift used to set the transmission power SCPL, then the transmission power shift of the SCPL is set as indicated in Table 4 below.

Table 4 SCPL signal transmission power offset (dB) Shortcode 0.5 00000 1 01001 1,5 11011 2 10010 2,5 00111 3 01110 3,5 11100 4 10101

Table 4 lists the shifts in the transmit power of SCPL for short RPSS codes in a single-bit SAR field. SCL transmission power shifts are determined taking into account the combination of a gain-related shift in the range from 1 to 3 dB and a shift associated with changes in the signal propagation channel. After rounding the sum of the values, the shift _{total gain} 1332 and the _{condition_channel} shift 1333 select the closest value from the eight shifts shown in Table 4. Node B can use the SCPL transmit power shift for the period of the SCPL transmit power update. After using the SCPL transmit power shift as the initial value in the transmission of the first SCPL time slot, the Node B can control the SCPL transmit power from the next time slot based on the SAR field received from the UE.

The relative power offset for use in determining the transmit power of the SSCL can be transmitted by various codes other than conventional RPSS codes, such as (n, 3) codes and (n, 4) codes.

In the case of (n, 3) -code 3 indicates the number of bits of input information, and n indicates the length of the code. The (n, 3) -code is a block code with which you can control the relative power shift at 8 levels, and the parameter n can be adjusted in accordance with changes in the conditions in the channel, the length of the SAR field, and the period of the relative power shift. The (n, 3) code becomes a block code showing optimal performance all the time for length n.

The following is a detailed description of a method for generating an (n, 3) code for transmitting a relative code shift.

On Fig presents a block diagram of an encoder for generating (n, 3) code and (n, 4) code in accordance with the present invention.

Simplex encoder 1401 generates a simplex codeword. A simplex codeword is formed by “puncturing” (deleting) the first column (m × m) of the first-order Reed-Muller code. (2 ^k-1 , k) simplex codewords are generated from (2 ^k , k) first-order Reed-Muller simplex codes. To generate (n, 3) codes, simplex codewords are required (7, 3). Table 5 below lists the (8, 3) first-order Reed-Muller codes and (7, 3) simplex codewords formed by puncturing the first column, i.e. Reed-Muller first-order code characters.

Table 5 W0 0 0 0 0 0 0 0 0 W1 0 1 0 1 0 1 0 1 W2 0 0 1 1 0 0 1 1 W3 0 1 1 0 0 1 1 0 W4 0 0 0 0 1 1 1 1 W5 0 1 0 1 1 0 1 0 W6 0 0 1 1 1 1 0 0 W7 0 0 0 0 1 1 1 1

A simplex encoder 1401 that generates simplex codewords from first-order Reed-Muller codes, as can be seen from Table 5, is described below with reference to FIG. 16. The simplex encoder shown in FIG. 16 may be replaced by a memory storing information contained in Table 5.

On Fig presents a block diagram of a simplex encoder for generating (7, 3) simplex codes in accordance with the present invention.

As shown in FIG. 16, a first-order Reed-Muller base code generator 1601 generates first-order Reed-Muller base codes W1, W2 and W4 for use in generating first-order Reed-Muller codes W0 to W7. The leftmost “0” bits of codes W1, W2 and W4 are punctured. The reason for using punctured first-order Reed-Muller codes is to facilitate the generation of simplex codewords. Multipliers 1611, 1612 and 1613 provide the selection of some of the punctured Reed-Muller base codes needed to generate the punctured code Wj (j = 0, 1, ..., 7) by multiplying the bits (a ₀ , a ₁ , a ₂ ) input information to codes W1, W2 and W4 with punctured leftmost code bits.

For example, if the bits (a ₀ , a ₁ , a ₂ ) of the input information are binary bits "101", then the multipliers 1611, 1612 and 1613 select W4 and W1 from the punctured first-order Reed-Muller codes to generate a decimal number W5 "5" indicated by the bits of the input information. Adder 1605 generates a first-order Reed-Muller code corresponding to the input information bits by summing the selected first-order Reed-Muller base codes.

14, a simplex encoder 1401 provides (7, 3) a simplex word to an interleaver 1402. An interleaver 1402 permutes (7, 3) columns of a simplex codeword according to a predetermined interleaving scheme. By permuting the columns (7, 3), the simplex codeword takes a specific form, which makes the resulting code optimal for a length n, despite the repeatability of n code symbols. Those. a simplex codeword is converted to an optimal codeword by permuting the columns.

To generate the (n, 3) -code, column permutations are performed as follows:

where Sj (j = 1, 2, ..., 7) represents the jth character (7, 3) of the simplex code. A reordered simplex code exhibits optimal characteristics for a length n, even if it is split along a length n. Column permutations are a process of reordering the input simplex code to provide an optimal weight distribution for length n.

A simplex code with permutations of the columns is fed to the input of the repeater 1403. The repeater 1403 repeats (7, 3) a simplex code with permutations of the columns under the control of the controller 1404. The controller 1404 controls the repeater 1403 to generate n simple code symbols that are repeated according to parameter n.

To explain the operation of the repeater 1403 and the controller 1404, an example below describes the generation of (10, 3) code from (7, 3) a simplex code.

Repeater 1403 repeats (7, 3) a simplex code with permutations of columns in the order S ₁ , S ₂ , S ₄ , S ₇ , S ₃ , S ₅ , S ₆ , S ₁ , S ₂ , S ₄ , S ₇ , S ₃ , S ₅ , S _{6 ...,} and the controller 1404 controls the repeater to output only S ₁ , S ₂ , S ₄ , S ₇ , S ₃ , S ₅ , S ₆ , S ₁ , S ₂ , S ₄ for n = 10.

On Fig presents a block diagram of a decoding device for decoding the (n, 3) code and (n, 4) code in accordance with the present invention. As shown in FIG. 15, the (n, 3) code from the output of the repeater 1403 shown in FIG. 3 is supplied to the input of the drive 1501. The drive 1501 is controlled by a controller 1502. If the code received from the encoder is (n 3) code, then the controller 1502 controls the drive 1501 to separate the characters of the (n, 3) code on a 7-character basis and to accumulate repeated characters. The drive 1501 converts the accumulated (n, 3) code into a (7, 3) simplex code. Reverse interleaver 1503 restores (7, 3) a simplex code in the order of the original code symbol by rearranging (7, 3) the simplex code in columns in the reverse order according to the reverse interleaving scheme

The recovered (7, 3) simplex code is supplied to block zero insertion 1504. Zero insertion unit 1504 converts a (7, 3) simplex column permutation code into a (8, 3) first-order Reed-Muller code by inserting a zero before (7, 3) simplex code received from the deinterleaver 1503.

Block 1505 of the inverse fast Hadamard transform (UPSA) decodes (8, 3) the first-order Reed-Muller code into input information bits (a ₀ , a ₁ , and ₂ ) by the inverse fast Hadamard (8, 3) conversion of the first Reed-Muller code order.

The Hadamard inverse fast transform has the advantages of quickly decoding the first-order Reed-Muller code and reducing the complexity of the decoding hardware for the first-order Reed-Muller code.

In the method of transmitting the relative shift using the (n, 4) code 4 means the number of input information bits representing the relative power shift, and n is the code length. The (n, 4) code is a block code using which the relative power shift can be controlled over 16 levels, and n can be adjusted according to the conditions in the channel, the IOS field length and the period of the relative power shift. The (n, 4) code becomes a block code exhibiting optimal characteristics all the time for length n.

The formation of an (n, 4) code is described below with reference to FIG.

Simplex encoder 1401 generates a simplex codeword. A simplex codeword is generated from a first-order (mxm) Reed-Muller code by puncturing the first column, a (2 ^k-1 , k) simplex code word is generated from a first-order Reed-Muller (2 ^k-1 , k) code. For n mod 15 = 5, the (n, 4) codes have a minimum distance different by 1 from the corresponding distance for optimal codes of length n. Except when n mod 15 = 5 (i.e., n = 5, 20, 35, 50, ...), (n, 4) codes show optimal characteristics for length n.

Table 6 (16, 4) first-order Reed-Muller codes and (15.4) simplex codes W0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 W1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 W2 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 W3 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 W4 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 W5 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 W6 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 W7 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 W8 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 W9 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0

W10 0 0 1 1 0 0 1 1 1 1 0 0 1 1 0 0 W11 0 1 1 0 0 1 1 0 1 0 0 1 1 0 0 1 W12 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 W13 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1 W14 0 0 1 1 1 1 0 0 1 1 0 0 0 0 1 1 W15 0 1 1 0 1 0 0 1 1 0 0 1 0 1 1 0

A simplex encoder 1401 that generates simplex codewords from first-order Reed-Muller codes, as can be seen from Table 6, is described below with reference to FIG. Although a simplex encoder for generating (15, 4) simplex codes is separately presented in the present invention for illustrative purposes, a simplex encoder can be replaced by a memory that stores (15, 4) simplex codes shown in Table 6.

On Fig presents a block diagram of a simplex encoder for generating (15, 4) simplex codes in accordance with the present invention. The first-order Reed-Muller base code generator 1701 generates first-order Reed-Muller base codes W1, W2, W4 and W8 for use in generating first-order Reed-Muller codes W0 to W15. The leftmost zeros of the code bits of codes W1, W2, W4 and W8 are punctured. The reason for using punctured first-order Reed-Muller codes is to facilitate the formation of simplex codewords. The multipliers 1711-1714 multiply the input information bits (a ₀ , a ₁ , a ₂ , and ₃ ) by the codes W1, W2, W4, W8 with punctured leftmost code bits to select some of the punctured first-order Reed-Muller base codes needed to form a punctured code W _j (j = 0, 1, ..., 15). For example, if the information bits (a ₃ , a ₂ , a ₁ , a ₀ ) are binary bits "1001", then the multipliers 1711-1714 select W8 and Wl from the punctured first-order Reed-Muller codes to generate the decimal code W9 the number "9" indicated by the input information bits. An adder 1705 generates a first-order Reed-Muller code corresponding to the input information bits by summing the selected first-order Reed-Muller base codes.

According to FIG. 14, a simplex encoder 1401 provides (15, 4) a simplex codeword to an interleaver 1402. An interleaver 1402 interchanges (15, 4) the simplex codeword in columns. By permuting the columns (15, 4), the simplex code word takes a specific form, which makes the resulting code optimal for a length n despite repeating n code symbols.

The interleaver 1402 performs column permutations for the (n, 4) simplex codeword in accordance with the following interleaving scheme:

Except when n mod 15 = 5 m (i.e., n = 5, 20, 35, 50, ...), (n, 4) codes with optimal characteristics for length n can be generated by permutations of columns . For n mod 15 = 5, (n, 4) codes are generated that have a minimum distance differing by 1 from the corresponding distance for optimal codes of length n.

A simplex code with permutations of the columns is fed to the input of the repeater 1403. Repeater 1403 repeats (15, 4) a simplex code with permutations of the columns under the control of the controller 1404. The controller 1404 controls the repeater 1403 to generate n simplex code symbols that are repeated according to parameter n.

To explain the operation of the repeater 1403 and the controller 1404, the formation of (20, 4) code from (15, 4) simplex code is described below as an example. Repeater 1403 repeats (15, 4) a simplex code with permutations of columns in the order S ₁ , S ₂ , S ₄ , S ₈ S ₁₄ , S ₁₃ , S ₁₁ , S ₇ , S ₅ , S ₃ , S ₁₂ , S ₁₀ , S ₁₅ , S ₉ , S ₆ , S ₁ , S ₂ , S ₄ , S ₈ S ₁₄ , S ₁₃ , S ₁₁ , S ₇ , S ₅ , S ₃ , S ₁₂ , S ₁₀ , S ₁₅ , S ₉ , S _{6 ...} , and the controller 1404 controls the repeater to output only S ₁ , S ₂ , S ₄ , S ₈ S ₁₄ , S ₁₃ , S ₁₁ , S ₇ , S ₅ , S ₃ , S ₁₂ , S ₁₀ , S ₁₅ , S ₉ , S ₆ , S ₁ , S ₂ , S ₄ , S ₆ S ₁₄ for n = 10.

With reference to FIG. 15, decoding of an (n, 4) code is described below.

In operation, the (n, 4) code from the output of the repeater 1403 shown in FIG. 14 is supplied to the input of the drive 1501. The drive 1501 is controlled by a controller 1502. The controller 1502 controls the drive 1501 to separate the characters of the (n, 4) code on a 15-character basis and to accumulate repeated characters. The drive 1501 converts the accumulated (n, 4) code into a (15, 4) simplex code. Reverse interleaver 1503 restores (15, 4) a simplex code in the order of the original code symbol by rearranging (15, 4) the simplex code in columns in the reverse order according to the reverse interleaving scheme

The recovered (15, 4) simplex code is supplied to block zero insertion 1504. Zero insertion unit 1504 converts (15, 4) simplex code with column permutations into first-order Reed-Muller code by inserting zero before (15, 4) simplex code received from inverted interleaver 1503. Hadamard inverse fast transform (UPSA) unit 1505 decodes (16, 4) first-order Reed-Muller code into input information bits (a ₀ , a ₁ , ₂ , and ₃ ) by inverse fast Hadamard conversion of the (16, 4) first-order Reed-Muller code. The Hadamard inverse fast transform has the advantages of quickly decoding the first-order Reed-Muller code and reducing the complexity of the decoding hardware for the first-order Reed-Muller code.

The following describes a simplex encoder for generating both (n, 4) simplex code and (n, 3) simplex code in accordance with the present invention. (n, 3) -code and (n, 4) -code are applied to the levels of relative power shifts for the transmit power of the SCPL signal directed to the UE. The (n, 3) code is used if it is assumed that the number of levels of relative power shifts is small, and the (n, 4) code is used if a large number of levels of relative power shifts should be set. Which code to use is determined based on various criteria. One of the criteria is the number of nodes B that make up the active set when the launcher is in the GPO zone. The (n, 3) -code is used if the active set has a small number of nodes B, and the (n, 3) -code is used if the active set contains a large number of nodes B.

As shown in FIG. 14, a simplex encoder 1401 generates a simplex codeword. A simplex codeword is formed from a first-order Reed-Muller (m × m) code by piercing the first column. From the (2 ^k , k) simplex code, a (2 ^k-1 , k) first-order Reed-Muller code is generated. (7, 3) simplex code and (15, 4) simplex code are required to generate the (n, 3) code and (n, 4) code, respectively. Table 5 used for the (n, 3) -coder is also applicable to an encoder having the ability to generate both an (n, 3) -code and an (n, 4) -code. (7, 3) simplex codewords are formed by puncturing the first column in Table 5.

Table 6, used for an (n, 4) encoder, illustrates first-order Reed-Muller (15, 3) codes, is also applicable to an encoder that can generate both an (n, 3) code and (n, 4 ) code. (15, 4) simplex codewords are formed by puncturing the first column in Table 6.

An encoder for generating simplex codes from first-order Reed-Muller codes shown in Table 5 and Table 6 is shown in FIG. Although a separate encoder is shown in FIG. 18, a memory may be used instead to store the information contained in Table 5 and in Table 6.

18, a first-order Reed-Muller base code generator 1801 generates first-order Reed-Muller base codes W1, W2, W4 and W8, generates for use in generating first-order Reed-Muller codes W0-W15. The leftmost zero bits of codes W1, W2, W4 and W8 are punctured. The reason for using punctured first-order Reed-Muller codes is to facilitate the formation of simplex codewords. The W8 code is additionally used in the (n, 3) -code generator to generate the (n, 4) -code. Multipliers 1811-1814 multiply the input information bits (a ₀ , a ₁ , a ₂ , and ₃ ) by the codes W1, W2, W4, W8 with punctured leftmost code bits to select some of the punctured first-order Reed-Muller base codes needed to form the punctured code Wj (j = 0, 1, ..., 15).

For example, if the information bits (a ₃ , a ₂ , a ₁ , a ₀ ) are the binary bits "1101", then the multipliers 1811-1814 select the codes W8, W4 and W1 from the punctured first-order Reed-Muller codes to generate the code W13 corresponding to the decimal number "13" indicated by the input information bits. Switch 1803 is used when generating only the (n, 4) code. This means that switch 1803 is open when an (n, 4) code is generated. Adder 1805 generates a first-order Reed-Muller code corresponding to the input information bits by summing the selected first-order Reed-Muller base codes.

According to FIG. 14, a simplex code is supplied to an input of an interleaver 1402. An interleaver 1402 permutes columns of a simplex code in accordance with a particular interleaving scheme. By rearranging the columns, the simplex codeword takes a specific form, which makes the resulting code optimal for a length n despite repeating n code symbols. To generate the (n, 3) code, the interleaver 1402 performs column permutations in accordance with the following interleaving scheme:

Column swapping is the process of reordering an input simplex word according to a weighted distribution. The reordered simplex code exhibits optimal characteristics for the length when it is divided by the length n. The interleaver 1402 performs column permutations to form an (n, 4) code in accordance with the following interleaving scheme:

Except when n mod 15 = 5 m (i.e., n = 5, 20, 35, 50, ...), (n, 4) codes with optimal characteristics for length n can be generated by permutations of columns . For n mod 15 = 5, (n, 4) codes are generated that have a minimum distance differing by 1 from the corresponding distance for optimal codes of length n.

A simplex (7, 3) or (1, 4) -code with permutations of the columns is fed to the input of the repeater 1403. Repeater 1403 repeats a simplex (7, 3) or (15, 4) -code with the permutations of the columns under the control of the controller 1404. Controller 1404 controls the repeater 1403 to provide n simplex code symbols that are repeated according to parameter n.

To explain the operation of the repeater 1403 and the controller 1404, the formation of a (15, 3) code from a (7, 3) code with column permutations is described below as an example. Repeater 1403 repeats (7, 3) a simplex code with permutations of columns in the order S ₁ , S ₂ , S ₄ , S ₇ , S ₃ , S ₅ , S ₆ , S ₁ , S ₂ , S ₄ , S ₇ , S ₃ , S ₅ , S ₆ , ..., and the controller 1404 controls the repeater 1403 to output only S ₁ , S ₂ , S ₄ , S ₇ , S ₃ , S ₅ , S ₆ , S ₁ , S ₂ , S ₄ , S ₇ , S ₃ , S ₅ , S ₆ , S ₁ for n = 15.

(n, 3) -code and (n, 4) -code generated by the encoder are fed to the input of the decoding device. The decoding procedure is described below.

During operation, the (n, 3) -code or (n, 4) -code from the output of the repeater 1403 shown in Fig. 14 is supplied to the input of the drive 1501. The drive 1501 operates under the control of the controller 1502. The controller 1502 determines which of the codes (n, 3) or (n, 4) is used. In the case of the (n, 3) code, the controller 1502 controls the drive 1501 to separate the characters of the (n, 3) code on a 7-character basis and to accumulate repeated characters. In the case of the (n, 4) code, the controller 1502 controls the drive 1501 to separate the characters of the (n, 4) code on a 15-character basis and to accumulate repeated characters. The drive 1501 converts the accumulated (n, 4) code or (n, 3) code into a (15, 4) or (7, 3) simplex code. Inverted interleaver 1503 restores (15, 4) or (7, 3) simplex code in the order of the source code characters by inverted permutations of the columns and provides the restored (15, 4) or (7, 3) simplex code to block zero insertion 1504.

(7, 3) - the code undergoes reverse column permutations in accordance with the following scheme:

and (15, 4) - the code is subjected to reversed permutations in columns in accordance with the following scheme:

Zero insertion unit 1504 converts (15, 4) or (7, 3) simplex columns permutations into a first-order Reed-Muller code by inserting a zero before the left-most code symbol of the simplex code received from deinterleaver 1503.

Block 1505 inverse fast Hadamard transform (UPSA) decodes (16, 4) or (8, 3) Reed-Muller code of the first order in the input information bits by inverse fast Hadamard transform. The Hadamard inverse fast transform has the advantages of quickly decoding the first-order Reed-Muller code and reducing the complexity of the decoding hardware for the first-order Reed-Muller code.

As an alternative to transmitting a relative power offset, at which the transmit power of the SSCL is determined, the control unit can transmit the SAR command for the SSCL directly in the IOS field of the CFCFL signal to node B. The factors that determine the SAR command include the levels of the GPR signals, the difference in the levels of the GPR signals, levels the signals of the dedicated pilot channels and the signal level difference of the dedicated pilot channels, as is used to determine the value of _{channel_condition} 1333 shift. The SAR command for the SSCL signal can be transmitted to each home a selected time interval or separately in a plurality of allocated time intervals. In the latter case, SAR is encoded separately to prevent errors that may be generated during the transmission of SPS in the IOS field. This code may be a regular RPSS ID code or any other code. The UMP command is used for transmit power SCPL at the time of receipt of the UMP command. If the control unit could not receive the SCPL signal in this method of direct transmission of SAR, the power control loop can be put into a standby state. Then, the relative power shift is transmitted to the node B, so that the node B can restore the transmission of the SCPL with the original power to the PU.

In addition to transmitting the relative power shift and direct transmission of SAR, to determine the power of the SCPL can be used the SPS command associated with VKPL.

The use of UMP associated with VKPL can be considered from two sides.

When the control unit is located in the GPO zone, the control unit transmits UMP separately for VKPL and SKPL. According to the standards of WCDMA (W-CDMA), PU transmits 1500 SAR per second. If the UC receives SCPL and at the same time it is located in the GPO zone, some of the SARs are used to control the SQPL from each node B in the active set, and the other SPS are used to control the power of the SSCL. Since SAR associated with SCPLs are useless for nodes B that do not transmit SSCLs, they ignore such SARs. For example, 1000 SARs are intended for VKPL, and 500 SLCs are intended for SCPL. SLCs associated with SCPL are transmitted separately in two parts, and the SLCs associated with SCPL are transmitted only once. How much UMP should be designed for SCPL depends on the accuracy with which the transmit power of the SCPL should be controlled. The UE or the higher level of the UTRAN system takes responsibility in making this decision.

In the second method of using SAR associated with VKPL to determine the transmit power of the SCPL, the transmission power of the VKPL from all nodes in the active set is actively controlled.

For ease of description, it is assumed that four nodes B are in the active set. The node B transmitting the SCPL signal is node B # 3, the other nodes B are node B # 5, node B # 6 and node B # 7, and the PU receiving the SCPL signal is PU # 1.

PU # 1 receives the SCPL signal from Node B # 0, Node B # 5, Node B # 6, and Node B # 7, combines them, forms an SAR for controlling the transmission power of the VCL for four nodes B included in the active set. PU # 1 also measures the pilot signal of each VCPL received from node B # 0, node B # 5, node B # 6 and node B # 7, and generates SAR for each node B. The SPS command generated after combining the VCPL signals, and UMP commands for controlling the power of each of the nodes B are transmitted, for example, in the order of SAR _combination, SPS _{node # 0} , SPS _{node # 5} , SPS _{node # 6} , SPS _{node # 7} , _{SPS combination,} SPS _{node # 0} , SPS _{node # 5,} UMP _{node # 6} , UMP _{node # 7} , ...

_Combine the _TPC. is used to control the transmission power of the VKPL signal from all nodes B included in the active set, and the SSS _{node # о is} used to control the transmission power of the SCPL signal transmitted from the node B # 0. Other UMP commands are used to control the transmission power of the VCPL from other nodes B at the time when they are first accepted into the active set, thereby performing virtual power control by the VCPL, which differs from the existing VCL. The virtual control of the power of the VCPL in nodes B, with the exception of the node B transmitting the SCPL signal, helps in the fast transmission of the SCPL signal to the control center # 1, regardless of any node B to which the SCPL switches in hard mode in the case when a hard handoff over SCPL occurs quickly in accordance with the movement of PU # 1 to the GPO zone.

An advantage of the second method of using SAR associated with VCPL is that the UE reliably receives the SSCL by directly controlling the transmit power of the node B transmitting the SSCL, and the SSCL signal can be transmitted immediately with the corresponding transmit power, regardless of which node B SCPL has been hard-switched by directly controlling the transmit power of the VKPL signal from each node B of the active set.

In the method of direct transmission of the SSC command associated with the VCL, the shift associated with changes in the conditions between the node B transmitting the SSCL signal and the UE is compensated by direct control of the power of the SSCL signal, however, the combined amplification of the signals from the nodes of the active set is not compensated. Thus, the combined gain should be set, taking into account the number of nodes In the active set.

So far, three methods have been described for controlling the transmit power of an SCPL signal: transmitting a relative power offset, transmitting an SAR command for the SSCL in the IOS field of the ON signal and using the SAR command for the ON signal. In addition to these methods, there is a fourth method for controlling the transmit power of an SSCL signal in the GPO zone, described below.

The UE receiving the DSCH reports information about the conditions in the channel between the UE and the nodes In the active set to the UTRAN system, so that the UTRAN can determine the corresponding power offset for the DSCH based on this information. In this case, UTRAN is a generic term that indicates the elements of a mobile communication network with the exception of PU in asynchronous mobile communication standards. The UTRAN receives information about the conditions in the channel between the PU and the Node B transmitting the DSCH signal, and about the conditions in the channel between the PU and the other Nodes In the active set during a predefined time period. The UTRAN determines the corresponding power offset for the Node B to transmit the DSCH signal based on the received information and transmits information about the power offset to the Node B transmitting the DSCH signal.

For example, the UE generates transmission information based on the measurements of the GST and the levels of pilot signals VCPL received from nodes In the active set.

The UE can establish that the channel state for SCPL is good if the level of the current OKP signal from the node B transmitting the SCPL is greater than the level of the OKP signal from the node B at a predetermined point in time, and transmit the current channel status information to the UTRAN via the IOS field VFKUOL signal using the RPSS code, (n, 3) code or (n, 4) code. Table 7 below explains the above definitions of channel status under the assumption that the UE can provide six types of information. When the PU first enters the GPO zone, it determines the channel state based on the OKP signal level at that moment, and then the PU determines the channel state based on the OKP signal level at each moment of transmitting channel state information.

Table 7 The difference between the threshold and the measurement (level OKP) Channel status (determined by PU) Transmission Code Power offset (defined by UTRAN) 6 dB Extremely bad 00000 4 dB 4 dB Very bad 01001 4 dB 2dB Bad 11011 3 dB 0 dB Normal 10010 1 db - 2 dB Good 00111 0 dB - 4 dB Very good 01110 - 2 dB

As shown in Table 7, the UTRAN can determine the power offset for the SCCR signal by analyzing the information received from the PU once, or by analyzing a change in the information received from the PU many times. In Table 7, the power shift for the SCPL signal is less than the difference in the levels of the OKP signal, so as not to cause rapid changes in the transmit power of the SCPL signal. The power offset can be set equal to or greater than the difference in the levels of the signal OKP. If the power shift is set smaller than the difference between the levels of the signal OKP, then the mutual interference with neighboring nodes will be small, while the actual transmit power of the signal SCPL below the desired level. If the power shift is set equal to the difference in the levels of the OKP signal, then the change in the received signals in the control unit is reflected in the form as it actually is, but the power shift, not reflecting the difference in the data transfer rates between the SCPL and OKP signals, can be applied to SCPL signal. When the power shift is set to a greater value than the difference between the levels of the signal OKP, then the mutual interference between neighboring nodes will be greater, despite the advantage of reliable reception of the signal SKPL in PU.

In addition to the level of the OKP signal from the node B transmitting the SCPL, as shown in Table 7, the decision criteria for the current state of the channel include the levels of the signals of the OKP from all nodes B of the active set, the difference between the signal level of the OKP of the node B transmitting the SCPL and the highest of the levels OKP signals of other nodes B of the active set, the pilot signal level in VFKUPL from the node B transmitting the SCPL, the pilot signal levels in VFKUPL from the nodes B of the active set and the difference between the pilot signal level in the VFKPL from the node B transmitting the DSCH and the largest from pi levels Lot-signals in VFKUPL from other nodes In the active set.

Figure 6 presents a block diagram of a receiver having the ability to receive multipath signals in the PU in accordance with the present invention. Multipath signals is a generalized term that indicates the presence of various paths along which the signals transmitted from node B enter the control unit directly or after re-reflection back and forth due to the presence of obstacles when the control unit is not in the GPO zone. If the control unit is located in the GPO zone, then the multipath signals correspond to different paths along which the signals transmitted by more than one node B of the active set enter the control unit.

After receiving radio frequency (RF) signals from nodes In the active set through the antenna 601, the transmitter converts the RF signals on the carrier into baseband signals or intermediate frequency (IF) signals in the RF module 602. Demodulator 603 demodulates the base band or IF signals, and descramblers from the first 610 through n-th 630 descramble the demodulated signals. The number of descramblers for use is determined in accordance with how many direct scrambling codes the PU can descramble at the same time, and the number of descramblers in the PU is different for different equipment manufacturers. Direct scrambling codes are used to identify nodes B in W-CDMA. To explain the invention, it is assumed that the first descrambler 610 descrambles the signal from the active set Node B # 1, which does not transmit the SCRL, and the nth descrambler 630 descrambles the signal from the Node # B transmitting the SCPL.

The first compression unit 611 multiplies the output of the first descrambler 610 by the Walsh codes used in the transmitter of the Node B # 1, thereby identifying forward link channels. Walsh codes for forming channels are also called orthogonal codes with a variable spreading factor (SEC codes) in W-CDMA, and their length changes with the data rate of the channels. The output of the first compression unit 611 may include a forward link shared channel (SCL), WCPL, and OCH. SCPL is a broadcast channel that transmits system information of the Node B # 1, a paging channel that transmits signaling information to the UE, or a forward link access channel. VKPL is a dedicated channel transmitted from the node In # 1 to the PU.

The first OKP estimation unit 612 receives the OKP signal from the first compression unit 611 and estimates the phase shift of the received signal due to changes in conditions in the signal propagation channel between the control unit and the Node B # 1, and the level of the OKP. The phase compensator 613 compensates for the phase of the dedicated forward link channel from node B # 1 in accordance with the obtained estimate of the phase of the transmission signal of node B # 1. Moreover, the estimated level of the common channel of the pilot signal is used to generate information for transmit power control of the forward link in the generator 650 command UMP forward link. Demultiplexer 614 demultiplexes the phase-compensated VKPL signal to VFKPL and VFKUPL. Before demultiplexing, the VCPL signal is a time-multiplexed signal VFKDPL and VFKUPL. The output signal of the demultiplexer 614 includes a data field VKPL, UOFP, a dedicated pilot signal and SAR. The VCPL field is subjected to deinterleaving in the deinterleaver 615, is decoded in the decoder 615 into the original data and transmitted to a higher level of the PU. The output signal of the UOFP from the demultiplexer 614 is interpreted as a frame level for use in interpreting transport channels with different data rates transmitted through the VFKDL. The first dedicated pilot signal estimator 617 estimates the extracted pilot signal strength received from the demultiplexer 614. The obtained dedicated pilot signal strength estimate is used by the forward link UMP command generator 650 to generate power control information or forward link channel information. The output signal of the SAR from the demultiplexer 614 is a reverse link power control command transmitted from the Node B # 1 to control the reverse link signal power of the control unit. SAR is used as a reverse link power control command and for generating forward link transmission power control information in a forward link SAR command generator 650.

In this case, the nth descrambler 630 descrambles the forward link signal received from the Node B # n in the same way as the first descrambler 610. The nth compression unit 631 provides OKP, VCPL, common channel of the forward link and SCPL signals separately from the descrambled signal in the same manner as the first compression unit 611. The output signal OKP n-th block 631 compression is fed to the input of the n-th block 632 estimates of the total channel of the pilot signal. The nth block 632 of the estimation of the common channel of the pilot signal provides information about the phase shift of the received signal due to changes in the propagation conditions in the channel between the control unit and the Node B # n for generating direct transmission power control information in the forward link UHF command generator 650 communication. The n-th block 632 evaluation of the OKP works in the same way as the first block 612 assessment of the OKP. The VKPL output signal from the nth block of compression 631 is divided into SAR, the pilot signal of the dedicated pilot channel, the VKPL and UOFP data field by means of a phase compensator 633 and a demultiplexer 634. The phase compensator 633 and demultiplexer 634 perform the same functions as phase compensator 613 and demultiplexer 614, respectively. The VCPL data field is subjected to deinterleaving in the deinterleaver 635, is decoded in the decoder 636 into the original data and transmitted to a higher level of PU. The output signal of the UOFP from the demultiplexer 634 is interpreted as a frame level for use in interpreting transport channels with different data rates transmitted over the VFKDL. The nth dedicated pilot channel pilot estimator 637 estimates the pilot signal strength of the dedicated pilot channel received from demultiplexer 634 in the same manner as the first dedicated pilot channel estimator 617. The obtained estimate of the pilot signal level of the dedicated pilot channel is used by the forward link UHF command generator 650 to generate power control information or forward link channel information. The output signal of the SAR from the demultiplexer 634 is a reverse link power control command transmitted from the Node B # n to control the reverse link signal power of the control unit. SAR is used as a reverse link power control command and for generating forward link transmission power control information in a forward link SAR command generator 650. The signal of the common forward link channel from the output of the nth compression unit 631 may be a signal of a broadcast channel or a forward link access channel. The broadcast channel transmits system information, and the forward link access channel transmits signaling information from a higher level of the Node B or from a higher level in the mobile communication network to the UE. The output signal of the SCLP from the nth compression unit 631 is subjected to deinterleaving in the deinterleaver 638, is decoded in the decoder 639, and then transmitted to a higher PU level. SCPL transmits only user data. Reversed interleaver 638 and decoder 639 operate in the same manner as inverted interleavers 615 and 635 and decoders 616 and 636, respectively.

The generator 650 commands UMP direct line of communication, when the PU moves to the area of the GPO and receives signals from the new node B, as well as from the old node B, receives the SAR, the levels of the pilot signals of the dedicated channel of the pilot signal and signal levels OKP related to nodes from B # 1 to B # n and generates VFKUPL power control information, SCFL power control information associated with VFKPL power control, and forward link channel information on which the SCFL signal is received. More specifically, the pilot signal levels of the dedicated pilot channel from nodes B # 1 to B # n are summed and compared with the desired SCCR reception level. If the received amount is less than the desired reception level of the SCRL, then the VKPL power control information is generated, issuing a command to increase the transmission power of the forward link. Otherwise, VKPL power control information is generated, issuing a command to reduce the transmission power of the forward link. The forward link UHF command generator 650 thus generates VCPL power control information, which can be used in three ways.

(1) Information about the relative power shift for the SCPL with respect to the HCPL. The relative power shift is determined using the methods described with reference to FIGS. 4 and 13.

(2) The SAR information is directly transmitted through the IOS on the basis of the VFKUOL to control the power of the SCPL. The SAR is determined on the basis of the OKP signal levels, the difference of the OKP signal levels, the signal levels of the allocated pilot channels and the signal level difference of the dedicated pilot channels, as used to determine the magnitude of the _{channel_shift} 1333 in FIG. 13. SAR for SCPL is transmitted in each time interval or separately in a plurality of time intervals. In the latter case, the SAR is separately encoded to prevent errors during the transmission of SPS in the IOS field. The code is a regular RPSS ID code or any other code, including the (n, 3) code and the (n, 4) code proposed in the present invention. SAR is used for transmit power SCPL at the time of receiving SAR. If the power control loop is in the standby state due to the failure to receive the SSCL signal in the control unit, the relative power shift is transmitted to control the power of the SSCH, and the node B sets the initial power level when resuming the transmission of the SSCL to the control panel.

(3) Channel Information of the forward link channel with SCPL. If not the control unit, but the UTRAN system determines the power shift for the DSCH, then the forward link control information is used in making the decision.

7 shows a block diagram of a transmitter in the PU according to the invention.

In accordance with Fig. 7, the forward link UHF command generator 711 receives the VHF power control information and the SCPL power control information from the forward link UHF command generator 650 shown in Fig. 6, and converts the received information to the W-WPS power control command SCPL power control, a codeword representing relative power offset or channel information of the forward link, and channel information of the forward link. The VCPL power control command is transmitted to all nodes B of the active set by means of the UOFP VFKUOL field. A power control command VCPL or a codeword representing a relative power offset and channel information of the forward link are determined in the forward link UMP command generator 650. The power control command VCPL can be transmitted in each allocated time interval or encoded and transmitted separately in a variety of time intervals to increase reliability. The update period of a codeword representing a relative shift or information of a forward link channel is determined in accordance with the code length or a higher level. The codeword is transmitted separately in a plurality of time intervals in accordance with its update period. The reverse link SAR command generator 711 issues an SCPL power control command or a codeword representing a relative power shift for the IOS field of the HFSCCU, or a VKPL power control command for the SAR field of the VCPUOL. The multiplexer 716 multiplexes the output signal of the generator 711 UMP commands of the reverse link with the pilot signal 714 and UOFP 715 received from the physical level of the PU, thus generating data for VFKUOL. An expansion unit 717 expands the BFCCH data with an appropriate OPCR code. A multiplier 720 multiplies the spread-spectrum data by transmit power gain to control the transmission power of the BFCOOL. User data 701 for VFKDOL is encoded in an encoder 702, interleaved in an interleaver 703, and expanded in a spectrum using an OPCR code corresponding to a VFKDOL data rate in an expansion unit 704. A multiplier 721 multiplies the spread-spectrum signal by the transmission gain to control the transmit power of the VFKDOL. The signals VFKUOL and VFKDOL are summed in the adder 705. Scrambler 721 scrambles the sum with a scrambling code for VKOL. The scrambled signal is modulated in modulator 707, multiplied with a carrier in RF module 708, and relayed to nodes B via antenna 710.

FIG. 8 is a receiver block diagram for a node B according to an embodiment of the present invention.

In accordance with FIG. 8, a signal received from the control unit via antenna 801 is converted to an IF signal or to a baseband signal in RF module 802, demodulated in demodulator 803, and descrambled in descrambler 804. The same scrambling code used in multiplier 706 PU shown in Fig.7, is used for descrambling in the receiver. The scrambling code identifies the signal from the PU. The descrambled signal is divided into VFKUOL and VFKDOL in block 805 compression.

A demultiplexer 806 demultiplexes the BFCCH signal received from the compression unit 805 into a dedicated reverse link pilot signal channel, UOFP, IOS, and UOM. Based on the dedicated reverse link pilot channel, the estimator 807 estimates the phase shift of the signal due to changes in channel conditions between the UE and the Node B and the level of the dedicated reverse link pilot channel. The phase compensator 810 compensates for the phase of the VFKDOL received from the compression unit 805 by estimating the phase shift value. Since VFKUOL and VFKDOL arrive at node B under the same conditions of signal propagation in the channel, the phase distortion of VFKDOL caused by changes in the conditions of signal propagation in the channel between the control unit and node B can be compensated based on the phase shift phase estimate obtained from block 807 estimates of the dedicated pilot channel.

The reverse link SAR command generator 808 uses the dedicated pilot channel channel level obtained from the dedicated pilot channel estimator 807 as the data from which the SAR command is generated to control the transmit power of the reverse link. At the same time, the forward link channel power controller 809 uses the IOS and SAR received from the demultiplexer 806 to generate the VCPL power control command and the SCPL power control command, respectively.

The forward link channel transmit power controller 809 generates an SCPL power control command based on the IOS information received from the demultiplexer 806. The IOS information may be the forward link channel information and the relative power offset for the SCRL in conjunction with the SCPL or the SSC command for the SCPL. If the IOS information includes the relative power shift for the SSCL and the information of the forward link channel, then the relative power shift and the information of the forward link channel are encoded before transmission in the form of the RPSS code, (n, 3) code, (n, 4) code or any other code. Therefore, the relative power shift information and the forward link channel information are used in the forward link channel transmit power control controller 809 after decoding. The forward link channel information is not initially used in the Node B, but becomes the data from which the network radio controller determines the power offset for the SSCL. The network radio controller notifies node B of a specific power shift. The SCPL power control command is transmitted in the SAR field of the VKPL signal for use in controlling the transmit power of the SCPL. Then, the VKPL signal from the output of the phase compensator 810 is subjected to deinterleaving in the deinterleaver 811, decoded in the decoder 812, and transmitted to a higher level of node B.

FIG. 9 is a block diagram of a transmitter for a Node B in accordance with a possible embodiment of the present invention.

According to Fig.9, user data to be transmitted on VFKDL is encoded in encoder 901 and interleaved in interleaver 902. Multiplexer 905 multiplexes the OOFP, the pilot signal 903, the SPS command for controlling the power of the VCPL signal received from the feedback generator SPS command generator, and the VFKPL signal received from the interleaver 902, and generates the SCPL. The reverse link SAR command generator 906 is a reverse link SAR command generator 808 shown in FIG. It sets the SAR based on the signal level of the dedicated channel of the pilot signal VFKUOL and transmits the UMP on VFKUPL VKPL. The VKPL signal from the output of the multiplexer 905 is expanded in the spectrum using the corresponding OCR code in the expansion unit 907, is multiplied by the channel gain set to control the transmit power of the SCPL in the multiplier 932 and is supplied to the adder 920. The channel gain is set in accordance with the power control command VKPL from the output of the controller 809 transmit power of the forward link channel shown in Fig.9.

Encoder 911 encodes SCPL data to be transmitted from Node B to the UE. The coded SCPL is interleaved in an interleaver 912 and spreads over the spectrum using the corresponding OCR code in block 913 expansion. A multiplier 933 multiplies the expanded signal by the channel gain to control the power of the SCPL signal. The gain of the cocoa is set in accordance with the SCPL power control command from the output of the forward power channel transmit power controller 809 shown in FIG.

The common channels of the forward link are multiplied by the channel gain in the multiplier 930. The common channels 915 of the direct line include the main common physical control channel through which the broadcast channel signal is transmitted, an additional common physical control channel through which the direct access channel signal and signal are transmitted paging channel; and a common pilot channel. The dedicated channel 917 for another user is directed to another user of the node B. After coding, interleaving and spectrum expansion, the dedicated channel is multiplied by the corresponding channel gain in the multiplier 931.

The adder 920 summarizes the common channels of the forward link, VKPL and SCPL. A multiplier 921 multiplies the resulting amount by a scrambling code assigned to node B. A modulator 922 modulates the scrambled signal. The RF module 923 transfers the modulated forward link signal to the carriers and transmits them to the control unit Node B through the antenna 925.

FIG. 10 is a flowchart illustrating an algorithm for determining a relative power offset for a DSCH by measuring the levels of a signal of an OPC from the active set nodes B in the UE in accordance with a possible embodiment of the present invention.

According to figure 10, the PU receives a signaling message associated with the starting point of the GPO from the UTRAN system and then at step 1001 sets PL _o according to the starting point for the GPO. The term UTRAN jointly defines all elements of a mobile communication network with the exception of user devices in the W-CDMA system. Node B also belongs to the UTRAN system. The value of PL _{o is} defined as the difference between the level of the OKP signal from the node B transmitting the SCPL signal and the maximum of the levels of the SCPL signal from other nodes B of the active set.

At step 1002, the UE measures the signal strengths of the forward link transmissions from nodes B of the active set and determines the number of nodes B. The number of nodes B is updated in accordance with the command generated from the UTRAN and known to the UE.

At step 1003, the UE checks to see if the level of the OKP signal from the node B transmitting the SCPL is the highest. If so, then at step 1004, the UE calculates the difference between the level of the OKP signal from the node B transmitting the SCPL and the highest of the signal levels of the OKP from other nodes B of the active set. On the other hand, if at step 1003 it is determined that the level of the OKP signal from the node B transmitting the DSCH is equal to or less than the largest of the levels of OKP signals from the other nodes B, then at step 1020, the UE calculates the difference between the level of the OKP signal from the node B transmitting SCPL, and the largest of the levels of OKP signals from other nodes In the active set. The difference obtained in step 1004 or 1020 is stored in the buffer of the PU in step 1005.

In step 1006, the UE determines whether it is time to update the relative power offset value for the DSCH. The update period of the relative power shift is determined in accordance with the length of the IOS field of the BFCCH signal, the codeword length of the relative power shift transmitted in the IOS field S, and scheduling by the UTRAN system. If the update time has not yet arrived, the control unit returns to step 1002. During the update of the relative power shift, at step 1006, the control unit checks at step 1007 the change in the value of the loss difference on the signal path stored in the buffer by assigning a higher weight to the last loss difference on the signal propagation path stored in the buffer.

The control unit determines the power shift in accordance with the change in the conditions of the signal propagation channel based on the difference in losses on the propagation path and the power shift in accordance with the number of nodes B of the active set and the reception power of the signals of the dedicated pilot signal channels received by the VCPL from nodes B, and selects at 1008, a relative shift in accordance with these two power shifts. After appropriate quantization of the selected relative power offset, the PU selects a code corresponding to the relative power offset in the internal table of relative power offsets. Relative power offset associated with the terms in the propagation channel signal reflecting the difference in the propagation path loss may be an offset value _{uslovie_kanala} 1333 a power offset determined by considering the total gain may be a value offset _{summarnoe_usilenie} 1332. In step 1008, Table 4 can be used as a table of relative power shifts.

At step 1009, the UE transmits a codeword of the relative power offset to the IOS of the BFCCH signal for the update period of the relative power offset. The PU checks in step 1010 whether the PU has left the GPO zone. If not, then the control panel returns to step 1002. If the GPO zone is passed, then the control panel at step 1011 performs normal power control of the SCPL, i.e. using only the power shift determined by the transmission power of the VCL, allocated in conjunction with the SCPL, and the difference between the transmission power of the VCL and SCPL. Then, the UE controls the transmit power of the DSCH based on the power shift information and SAR for the DSCH transmitted from the UE.

FIG. 11 is a flowchart of a direct transmission algorithm for the SCPL power control command in the IOS field of the BCHCCH in the UE in accordance with another embodiment of the present invention.

According to Fig. 11, the UE receives a signaling message associated with the start point of the GPO from the UTRAN system and then, at step 1101, sets PL _o according to the start time for the GPO. The term UTRAN jointly defines all elements of a mobile communication network, with the exception of user devices in the W-CDMA system. Node B also belongs to the UTRAN system. The value of PL _{o is} defined as the difference between the level of the OKP signal from the node B transmitting the SCPL signal and the maximum of the levels of the SCPL signal from other nodes B of the active set.

At step 1102, the UE measures the signal strengths of the forward link transmissions from nodes B of the active set and determines the number of nodes B. The number of nodes B is updated in accordance with the command generated from the UTRAN and known to the UE. At step 1103, the UE checks to see if the signal strength of the OKP from the node B transmitting the SCPL is the highest. If so, then at step 1104, the UE calculates the difference between the level of the OKP signal from the node B transmitting the SCPL and the highest of the signal levels of the OKP from other nodes B of the active set. If at step 1103 it is determined that the level of the OKP signal from the node B transmitting the DSCH is equal to or less than the highest of the levels of signals of the OKP from the other nodes B, then at step 1120 the UE calculates the difference between the signal level of the OKP from the node B transmitting the DSCH, and the largest of the levels of OKP signals from other nodes In the active set.

The difference obtained in step 1104 or 1120 is stored in the buffer of the control block at step 1105. At step 1106, the control panel determines whether another frame of the control signal circuit follows the current frame of the SCPL radio signal. If it is found that the next frame of the SCPL radio signal is present, then the UE at step 1107 determines whether it is time to transmit the BFCCH. The meaning of step 1107 is to determine whether to directly transmit the SAR command to the IOS of the VFKUOL signal to control the power of the SSCL signal, or to transmit a codeword representing the SPS command by a separate encoding method to increase the reliability of transmitting the SPS command. If the direct transmission method of UMP is adopted for use, then the answer to the question of whether it is time to transmit the WFKUOL signal is always positive. If the encoding method of SQMF SCPL is adopted at step 1107, then the UE returns to step 1102. If it is time to transmit the SQMCH SQPL, then the UE at step 1108 generates a SQM for the SQPL or the corresponding codeword using the values stored in the buffer. At step 1109, the SAR or the SAR codeword is directly transmitted to the IOS field of the VFKUOL signal. If the power control loop is in standby mode, due to the absence of the next frame of the DSCH radio signal at step 1106, then at step 1121, the relative power offset is calculated, and at step 1109 it is transmitted. To calculate the relative power offset for controlling the power of the SCCR in step 1121, the UE uses the measurements obtained in step 1102, helping node B to determine the initial transmit power of the next frame of the SCCR radio signal even for a period of no transmission of SCCR. The relative power offset is transmitted to the IOS field of the BFCCH signal at step 1109.

The PU checks in step 1110 whether it has left the GPO zone. If the GPO procedure is not completed, then the PU returns to step 1102. If the GPO procedure is completed, then the PU at step 1111 performs normal power control of the SCPL, i.e. using only the power shift determined by the transmission power of the VCL, allocated in conjunction with the SCPL, and the difference between the transmission power of the VCL and SCPL. Then, the UE controls the transmit power of the DSCH based on the power shift information and SAR for the DSCH transmitted from the UE.

12 is a flowchart illustrating an operation of receiving a relative power offset or SAR for a DSCH from a UE in the UTRAN system, in accordance with embodiments of the present invention.

According to FIG. 12, the UTRAN system transmits the GPO start message to the UE when the UU moves to the GOD area in step 1201. In step 1202, the UTRAN transmits an SCR with the initial relative power offset to the UU in the GOT zone. The initial relative power offset can be set to 0 dB or to the minimum offset value calculated according to a total gain of 1 dB. The UTRAN system receives the SCPL transmit power information from the UE in step 1203. The SCPL transmit power information may be a codeword representing a relative power offset or SAR for controlling the SCRL power. At 1204, the UTRAN system determines whether it has data to transmit to the UE. If there is SCPL data, the UTRAN system determines whether it continuously transmits the SCRL signal to the UE at step 1205. Continuous SCPL transmission means that the SCRL frame was transmitted to the UE earlier, before the current frame, and therefore, information about the transmit power of the previous SCPL can be Applied to the current SCRL frame. In contrast, intermittent DSCH transmission means that due to the absence of DSCH frames for some time before the current DSCH frame, the initial DSCH transmission power must be set using the DSCH transmission power information stored in the buffer. At step 1222, the UTRAN system determines the transmit power of the SCCR using the information about the transmission speed of the SCCR stored in the buffer. In the case of continuous transmission of DSCH, the UTRAN system sets the transmit power of the DSCH using the DSCH transmission rate information received from the UE in step 1206.

If it is determined at step 1204 that there is no SCCR frame to be transmitted to the UE that transmitted information about the transmission power of the SCPL, then the UTRAN system in step 1220 updates the information about the transmission power of the SCCR of the last SCCR transmitted to the UE based on the received power information SCPL transmission. In the case when the UE has not received SCPL frames, before the UTRAN system receives information about the transmit power of the SCPL, the UTRAN system sets the initial transmission power for the SCRL frame based on the received information about the transmit power of the SCPL. The initial power value is updated in accordance with the information received from the PU. The calculated SCPL transmit power information is stored in the buffer at step 1221 and is used to determine the SCPL transmit power at step 1222. The UTRAN then returns to step 1203 and repeats the above procedure.

After determining the transmit power of the SCPL in step 1222 or 1206, the UTRAN system in step 1207 transmits a signal of the SCRL with this transmit power to the UE.

At step 1208, the UTRAN system determines whether the PU has left the GPO area. If the PU is still in the GPO area, then the UTRAN system returns to step 1203.

If it is determined in step 1208 that the UE has left the GPO zone, the UTRAN system checks in step 1209 whether the UU moves to another Node B of the active set. If so, then the UTRAN system exempts the DSCH from the UE in step 1210. If the UE returns to the source node B in step 1209, then the UTRAN performs normal power control of the DSCH signal in step 1223.

FIG. 19 is a flowchart illustrating a PU algorithm for estimating a channel state by measuring the levels of OKP signals from nodes B of the active set and reporting channel state information to the UTRAN system, so that the UTRAN system determines a power offset for the SCR according to the third embodiment of the present invention.

According to Fig.19, the PU receives a signaling message associated with the starting point of the GPO from the UTRAN system and then, at step 1901, sets PL _o at the starting point of the GPO. The term UTRAN jointly defines all elements of a mobile communication network, with the exception of user devices in the W-CDMA system. Node B also belongs to the UTRAN system. The value of PL _{o is} defined as the difference between the level of the OKP signal from the node B transmitting the SCPL signal and the maximum of the levels of the SCPL signal from other nodes B of the active set.

At step 1902, the UE measures the signal strengths of the forward link transmissions from nodes B of the active set and determines the number of nodes B. The number of nodes B is updated in accordance with the command generated from the UTRAN and known to the UE.

At step 1903, the UE checks to see if the level of the OKP signal from the node B transmitting the SCPL is the highest. If so, then at step 1904, the UE calculates the difference between the level of the OKP signal from the node B transmitting the SCPL and the highest of the signal levels of the OKP from other nodes B of the active set. If it is determined at step 1903 that the level of the OKP signal from the node B transmitting the SCL is equal to or less than the highest of the levels of the OKP signals from other nodes B of the active set, then at step 1920, the UE calculates the difference between the level of the signal of the OKP from the node B transmitting SCPL, and the largest of the levels of OKP signals from other nodes In the active set. The difference obtained in step 1904 or 1920 is stored in the buffer of the PU in step 1905.

At step 1906, the UE determines whether it is time to transmit information about the current state of the channel to the UTRAN system. Information about the channel state is determined in accordance with the length of the IOS field of the VFKUOL signal, the length of the code word representing the state of the channel transmitted in the IOS field S, and scheduling by the UTRAN system. If at step 1906 it is determined that it is not time to transmit information about the state of the channel, then the control returns to step 1902. If at step 1906 it is determined that it is time to transmit information about the state of the channel, then the control at step 1907 checks whether the loss difference has increased or decreased on the signal propagation path with respect to the difference in losses on the signal propagation path stored in the buffer. In this case, the PU assigns a higher weight to the most recently saved loss difference on the signal propagation path when checking for changes in the said loss difference.

At step 1908, the UE estimates the state of the channel between the UE and the node B transmitting the DSCH, taking into account the estimates of the change in the difference in the losses on the signal propagation path, the number of nodes B of the active set and the signal strength of the dedicated pilot channels received by the HSCL from nodes B, quantizes the corresponding image information about the state of the channel and selects the code corresponding to the quantized value.

At step 1909, the UE transmits the channel status information code in the IOS field of the VKFUOL for the channel status information update period. The control unit checks at step 1910 whether it has left the zone 1910. If the GPO procedure is not completed, then the control unit returns to step 1902. If the GPO procedure is completed, then the control unit at step 1911 performs the usual power control of the SCPL, i.e. using only the power shift determined by the transmission power of the VCL, allocated in conjunction with the SCPL, and the difference between the transmission power of the VCL and SCPL. Then, the UTRAN system determines the transmit power of the SCPL in accordance with the information about the power shift and SAR for the SCRL transmitted from the PU.

20 is a flowchart illustrating an operation of calculating a power shift for a DSCH based on channel state information received from a UE in a UTRAN system in accordance with a third embodiment of the present invention.

As shown in FIG. 20, the UTRAN system determines the type of code with which the PU must transmit channel status information, notifies the PU of the code type and determines in 2001 how many times it is necessary to receive channel status information. Since the channel state information is received several times, the reliability of the power shift information for the SCPL signal increases. If the UTRAN system receives channel state information a small number of times, then the power shift update period is small. Therefore, the UTRAN system can set the power shift by adapting to the actual change in the state of the channel.

At step 2002, the UTRAN system receives encoded channel status information from the UE and decodes it. At step 2003, the UTRAN system compares the number of receptions of channel status information with the threshold set at step 2001. If the number of receptions is less than the threshold, then UTRAN remains at step 2002, and if the number of receptions is greater than the threshold, then UTRAN calculates the power offset for DSCH based on channel state information in step 2004. The power offset can be calculated by simply checking the channel state change or assigning a higher weight to the latest channel state information.

The power offset is stored in the buffer at step 2005. The UTRAN system at step 2006 checks if there is an SCR signal for transmission to the UE. In the absence of SCLs for transmitting the UTRAN, it returns to step 2002. On the other hand, in the presence of SCLs, the UTRAN determines the transmission power of SCLs based on the power shift in step 2007 and transmits in step 2008 SCLs with this transmit power to the UE. In step 2009, the UTRAN checks to see if the GPO procedure for the UE has been completed. If the GPO is still ongoing, then the UTRAN system in step 2010 operates in one or two ways. If the PU moves to another Node B, then the UTRAN system exempts the DSC from the PU. If the UE returns to the source node B transmitting the DSCH, then the UTRAN system performs the usual control of the power of the DSCH, i.e. controls the transmission power of the VCL, assigned in conjunction with the VCL, and the difference in the transmission power between the VCL and SCPL, and the SAR for the VCL, transmitted from the UE.

In accordance with the present invention, as described above, the UE receiving the DSCH signal easily sets a power shift for use in controlling the transmission power of the DSCH in an ideal manner in the HLO zone. Moreover, the use of an (n, 3) code and an (n, 4) code for transmitting a power shift guarantees reliable transmission and reduces hardware complexity.

Although the present invention has been described above with reference to its preferred embodiments, it will be apparent to those skilled in the art that various modifications in form and in detail can be made without departing from the spirit and scope of the present invention as defined in the claims.

Claims (32)

1. The method of controlling the transmission power in a shared channel of a direct communication line (SCL) in a mobile communication system having a plurality of nodes B and a user device (PU) in a flexible handover (GPO) zone, defined as an overlapping zone between cell areas of nodes B, moreover, the first node B transmits data on the SSCL and the transmission power control field (SAR) via a dedicated forward link channel (VCPL) to the control unit, and the other nodes B transmit the SAR field on the VCPL to the control unit, the method includes the steps of generating control information oschnostyu DSCH to transmit the DSCH power control based on the channel state determined by the received power of the common channel pilot signal (CPICH) from the first node B and the transmission power of the DSCH control information to the first node B. 2. The method according to claim 1, characterized in that the SCPL power control information is generated at the time of updating the relative power shift. 3. The method according to claim 2, characterized in that the relative power shift is determined based on the difference in losses on the signal propagation path, as measured by the difference in the level of the OKP signal from the first node B and the maximum of the signal levels of the OKP from other nodes B. 4. The method according to claim 3, characterized in that the difference in the levels of the OKP signals is saved during each calculation to check the value of the difference in losses on the signal propagation path. 5. The method according to claim 1, characterized in that the SCPL power control information is transmitted in the feedback information field (IOS) of the dedicated physical control channel of the reverse link (VFKUOL). 6. The method according to claim 1, characterized in that it further includes the step of generating a power control command for the next frame using the previously received frame in the absence of the next SCR frame to be received. 7. The method according to claim 6, characterized in that the SCPL power control information is transmitted on the BSCF at the time of transmission of the power control information when the next SCRL frame is received. 8. The method according to claim 1, characterized in that the SCPL power control information is transmitted via the IOS field. 9. The method according to claim 6, characterized in that the codeword representing the SCPL power control information is transmitted on the BSCF at the time of transmission of the power control information when the next SCRL frame is received. 10. The method according to claim 9, characterized in that the codeword representing the SCPL power control information is transmitted via the IOS field. 11. The method according to claim 10, characterized in that the code word is generated using a simplex code word. 12. The method according to claim 1, characterized in that the SCPL power control information is generated and transmitted at the time of transmission of the message based on the channel status. 13. The method according to p. 12, characterized in that the state of the channel is estimated in accordance with the number of all nodes B transmitting the SAR fields on the VCL, and the difference between the level of the signal from the first node B and the maximum signal level from the other nodes B. 14. The method according to item 13, wherein the channel state assessment is transmitted through the IOS field. 15. The method according to 14, characterized in that the channel status estimate is encoded using a simplex codeword. 16. The method according to p. 12, characterized in that the point in time of message transmission based on the channel state is determined by scheduling in the Terrestrial Network access to radio communications of the Universal Mobile Telecommunication System (UTRAN). 17. The method of controlling the transmission power in the shared channel of a direct communication line (SCL) in a mobile communication system having a plurality of nodes B and a user device (PU) in a flexible handover zone (GPR), defined as an overlap zone between cell areas of nodes B, moreover, the first node B transmits data on the SSCL and the transmission power control field (SAR) via a dedicated forward link channel (HCPL) to the control unit, and the other nodes B transmit the SAR field on the HCPL to the control panel, the method includes the steps of receiving power control information the transmission of SCPL from the control panel and the transmission of data over the SCRL in accordance with the received information of controlling the transmission power of the SCRL. 18. The method according to 17, characterized in that the transmission power of the SCPL is determined using the latest data transmitted on the SCRL in the absence of SCPL data to be transmitted to the UE after receiving the transmission power control information of the SCPL. 19. The method according to 17, characterized in that at the initial entry of the PU into the GPO zone, the SCPL power is determined in accordance with a predetermined initial shift in power. 20. The method according to 17, characterized in that the transmission power control information SCPL updated at each reception of the power control information SCPL from PU. 21. The method of controlling the transmission power in a shared channel of a direct communication line (SCL) in a mobile communication system having a plurality of nodes B and a user device (PU) in a flexible handover (GPO) zone, defined as an overlapping zone between cell areas of nodes B, moreover, the first node B transmits data on the SSCL and the transmit power control field (SAR) via a dedicated forward link channel (HCPL) to the control unit, and the other nodes B transmit the SAR fields on the HCPL to the control panel, the method includes the steps of receiving channel status information from the UE to at least a predetermined number of times and determining the DSCH transmission power according to the received channel state information and the transmission of DSCH data according to the determined information to the UE. 22. The method according to item 21, characterized in that it further includes the step of determining the number of receptions of information about the state of the channel and notifying the PU about a certain amount when the PU is in the GPO zone. 23. The method according to item 21, wherein the information about the state of the channel is evaluated in accordance with the number of all nodes B transmitting the SAR fields on the SCPL and the difference in the level of the signal from the first node B and the maximum signal level from the other nodes B. 24. A device for controlling the transmit power in a shared channel of a direct communication line (SCL) in a mobile communication system having a plurality of nodes B and a user device (PU) in a flexible handover (GPO) zone, defined as an overlapping zone between cell areas of the nodes of B moreover, the first node B transmits data on the SSCL and the SAR field on a dedicated forward link channel (VCPL) to the control unit, and the other nodes B transmit the SAR field on the VCPL to the control panel, and the device contains a pilot signal level meter for measuring I signal levels of the common channels of pilot signals (OKP) from nodes B, transmitting the SAR field on the VCPL, a detector for changing the level of the OKP signal, designed to check whether the signal level of the OKP increases or decreases from the first node B received from the pilot signal level meter , a shift determination unit for detecting a shift according to a test result received from the OKP signal level change detector, and a transmitter for transmitting a shift received from the shift determination unit according to the VOL. 25. The device according to p. 24, characterized in that the transmitter transmits the shift through the IOS field of the signal of the dedicated reverse link channel (VKOL). 26. The device according to p. 24, characterized in that it further comprises a simplex encoder for encoding a shift using a simplex codeword. 27. A device for controlling the transmission power in a shared channel of a direct communication line (SCL) in a mobile communication system having a plurality of nodes B and a user device (PU) in a flexible handover (GPO) zone, defined as an overlapping zone between cell areas of nodes B moreover, the first node B transmits data on the SSCL and the SAR field on a dedicated forward link channel (VCPL) to the control unit, and the other nodes B transmit the SAR field on the VCPL to the control panel, and the device contains a pilot signal level meter for measuring I signal levels of common pilot channels (CPICH) from node B transmitting the TPC field on VKPL memory codewords Reed-Muller order to issue a code in accordance with the determined offset, and a transmitter for transmitting shear received from memory by puncture. 28. The device according to item 27, wherein the transmitter transmits the shift through the IOS field of the signal VOL. 29. A method of transmitting SCPL power control information to a control unit, which receives pilot signals and power control bits for controlling reverse link channels from nodes B included in the active set, and receives SCPL data from one of the nodes B, the method comprising the steps of generating SCPL transmit power control information based on the number of nodes B and deviating the received power of the OKP signal of node B transmitting the SCPL signal and transmitting SCPL power control information to the node B transmitting the SCPL signal. Priority on points: 10/04/2000 pp. 1-10, 17-20, 24, 25; 10/09/2000 pp. 11, 26-28; 10/11/2000 pp. 12-16, 21-23, 29.

Images