MXPA97007297A - System and method for establishing output power parameters in a cellular telecommunication system mo - Google Patents

System and method for establishing output power parameters in a cellular telecommunication system mo

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Publication number
MXPA97007297A
MXPA97007297A MXPA/A/1997/007297A MX9707297A MXPA97007297A MX PA97007297 A MXPA97007297 A MX PA97007297A MX 9707297 A MX9707297 A MX 9707297A MX PA97007297 A MXPA97007297 A MX PA97007297A
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MX
Mexico
Prior art keywords
output power
power level
maximum
channels
level
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Application number
MXPA/A/1997/007297A
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Spanish (es)
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MX9707297A (en
Inventor
Sawyer Francois
Original Assignee
Telefonaktiebolaget Lm Ericsson
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Publication date
Priority claimed from US08/411,426 external-priority patent/US5634195A/en
Application filed by Telefonaktiebolaget Lm Ericsson filed Critical Telefonaktiebolaget Lm Ericsson
Publication of MX9707297A publication Critical patent/MX9707297A/en
Publication of MXPA97007297A publication Critical patent/MXPA97007297A/en

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Abstract

The present invention relates to a telecommunications system that includes one or more first transceiver devices and one or more second transceiver devices, the first and second transceiver devices that communicate over one or more channels consisting of automatically regulated channels and unregulated channels , a method for establishing the parameters of the output power level in one of the first transceiver devices comprising the steps of: determining a maximum level of output power used in one or more of the automatically regulated channels, comparing the maximum level of output power with the output power levels set for one or more of the unregulated channels, and reporting the discrepancies between the maximum output power level and the output power levels set for one or more of the unregulated channels

Description

SYSTEM AND METHOD FOR ESTABLISHING OUTPUT POWER PARAMETERS IN A CELLULAR MOBILE TELECOMMUNICATION SYSTEM BACKGROUND OF THE INVENTION TECHNICAL FIELD OF THE INVENTION This invention relates to cellular, mobile telecommunications systems, and, more particularly, to a system and method for automatically verifying and establishing optimum values of the output power of the base station and the radio channel. of the mobile station.
Description of the Related Art Wireless communication systems, including cellular mobile telephone communication systems, provide telephony services between mobile users and wireline users. A system can be only analog, only digital or a dual-mode system capable of operating in analog and digital form. Cellular analogue communication systems employ conventional frequency voice modulation for transmission, while digital Time Division Multiple Access (TDMA) telecommunications cellular systems convert voice into digital samples using voice coders in both the mobile station as in the base. These digitized samples are transmitted between a mobile station and a base station in accordance with the TDMA structure specified for a particular communications system. The voice samples are encoded with error protection, which allows the measurement of the quality of the transmitted signal, calculating the error ratio in the sites (BER) at the end of the reception. A low BER level depends on a good quality in the radio channel that is not disturbed by interference. Traditionally, the output power of each of the radio channels in the base station is manually set by an operator. The operator usually selects the same output power level value for all channels of the base station, including analog control and voice channels, as well as digital control of voice channels. The output power values of the base station remain fixed until the operator manually sets and sets a new value. On the other hand, the output power of the mobile station in the digital or analog voice channel during the conversation is normally controlled in accordance with the commands received from the base station. The levels specified by the commonly transmitted commands are in accordance with the measurements made at the base station on the analog or digital voice channel. However, the initial power level that the mobile station supposes, when a conversation is started for the first time in an analog or digital voice channel, is established according to a parameter defined by the operator transmitting the base station in the channel of control. In addition, the power output level of the base station, when the transmission is made in the control channel, is also established in accordance with a value defined by the operator. One of the problems associated with the aforementioned methods of establishing the output power for the mobile or base stations is that these methods fail to optimize adequately the power levels necessary for the transmission and reception of good quality. If the power level of a base station is set too high, excessive radio interference is created within the coverage area of other base stations, which reuse the same channel frequencies. If the power level is too low, on the other hand, the unacceptable reception in the mobile or base stations results from the insufficient intensity of the signal. Since the operator normally sets the required power levels based on a worst-case scenario, it has been observed in many mobile radio communication systems that these power levels are significantly higher than those needed to provide good radio coverage within the range of base stations. A commonly assigned Patent Application, separate, Series Number 08 / 061,000, filed May 14, 1993 discloses an invention entitled "Method and apparatus for regulation of transmission power in a radio system". In accordance with this invention, the BER reports are monitored during conversations on the digital voice channel and the output power of the transmitting station on the digital voice channel is continuously adjusted to improve operation. The transmitting station may be the base station or the mobile station. The objective of the invention is not to have a perfect transmission in each digital voice channel, which would require high power signals from the mobile and base stations, but to optimize the balance between power and quality to obtain an acceptable level of bit errors in the digital voice channels. However, this method can not be applied to analog voice channels since there is no means for the receiving mobile station to report the quality of the received signal to the transmitting base station. Also, this method can not be applied to digital or analog control channels because the control signal is used to communicate with multiple mobile stations in different ranges within the control area of the base station. In this way, the operator still needs to define an output power level of the base station for the analog voice channels, and an output power level for the digital and analog control channels of the mobile and base station. The initial values for the analog and digital voice channels of the mobile station must also be defined. In addition, the operator also needs to define a maximum power level value that must not be exceeded by the control mechanism of the output power in the digital voice channels of the mobile and base stations. Accordingly, it would be another advantage to have a system and method for establishing fixed system parameters such as power levels for the analog and digital control channels of the base station, the analogue voice channels of the base station, the analog control channels, and of the mobile station and to establish the initial power levels for the analog and digital voice channels of the mobile station. It would also be an advantage to have a system and method for establishing a maximum power level for the power control mechanism in the digital voice channels, both of the mobile and base stations. The present invention provides this system and method.
SUMMARY OF THE INVENTION The present invention is a system and method for automatically verifying and establishing optimum levels of output power of the base station and the mobile station in certain system radio channels in a cellular mobile telecommunication system. The invention is applicable for use in particular radio channels that can not be regulated efficiently by any process that makes quality measurements on a receiving device on a received signal transmitted on the radio channel, and that makes appropriate adjustments to the power level of this channel in the transmitting device. In cellular communication systems these channels include the analog and digital control channels of the base station, the analogue voice channels of the base station and the analog and digital control channels of the mobile station. The present invention uses the results of the monitoring of the power level values that are used in the radio channels of the base station or the mobile station that are regulated automatically by a separate regulation function. The separate regulation function can be a known method of power control for automatically controlling the digital voice channels of the base station or the mobile station. In one aspect, the present invention provides a system and method for determining a maximum level of output power that is used in the automatically controlled channels of the base station, comparing this maximum output power level with the power levels of the base station. output established for other channels of the base station and then the report, to the system operator, of the differences between the maximum output power level of the controlled channels and the output power levels established for other channels, for the evaluation and possible instigation of manual adjustment for power levels or [sic] other channels. In another aspect, the present invention provides a system and method for determining a maximum output power level that is used in the automatically controlled channels of mobile stations operating within the area of a base station, the comparison of the maximum power level output with the output power levels set for other channels of the mobile stations and then the report of the differences between the maximum output power level of the controlled channels and the output power levels established for other channels, to the operator of the system, for the evaluation and possible instigation of the manual adjustment of the power levels of the other channels. In another aspect, the present invention provides a system and method for determining the maximum levels of output power that are used in the automatically controlled channels of a base station, the comparison of certain maximum levels of output power with certain power levels of output set for other channels of the base station and, in response to this, the automatic adjustment of the output power levels for each of the other channels. In particular, this adjustment may comprise setting the output power levels for the other channels to the maximum output level of the automatically controlled channels. In yet another aspect, the present invention provides a system and method for determining the maximum levels of output power that are used in the automatically controlled channels of the mobile stations operating within the area of a base station, the comparison of certain maximum levels of output power with certain output power levels set for other channels of the mobile stations and, in response to this, automatically set the output power levels for each of the other channels of the mobile stations at the maximum output level of the channels controlled automatically.
BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood and its numerous objects and advantages will be more apparent to those skilled in the art in connection with the following drawings, together with the specification that accompanies them, in which: Figure 1 is a diagram in blocks illustrating a cellular radio communication system within which the present invention is implemented; Figure 2 is a graphical representation of a regulation function that is used in the regulation of the power of the digital voice channel; Figure 3a is a graphical representation of a function of the interference power in the receiving station, which can be used in the regulation of the power of the digital voice channel; Figure 3b is a graphical representation of a path loss or gain function in the link between transmitter and receiver that can be used in power regulation of the digital voice channel; Figure 4 is a graphical representation of another regulation function that is used in the regulation of the power of the digital voice channel; Figure 5 is a block diagram of an exemplary system for performing power regulation of the digital voice channel; Figure 6 is a table illustrating the types of channels and the power control method that is used for each type of channel in a conventional IS-54B system using digital voice channel power regulation; Figure 7 is a histogram illustrating the number of uses of each output power level of the base station compared to the power levels for the sampled speech channels in a set interval for a set period of time; Figure 8 is a graph of the cumulative number of uses at or below each power level of the digital voice channel of the base station, compared to the power level of the base station, taken from the data shown in the figure. figure 7; Figure 9 is a histogram illustrating the number of uses of each output power level of the digital voice channel of the mobile station, compared to the output power levels for the sampled speech channels in a set interval during a established period of time; Figure 10 is a graph of the cumulative amount of uses at or below each digital voice channel power level of the mobile station, compared to the power level of the mobile station, taken from the data shown in Figure 9; Fig. 11 is a flow diagram illustrating the functions performed according to the invention when a real maximum output power value is used for a base station; Fig. 12 is a flow chart illustrating the functions performed according to the invention when a real maximum output power value is used for a mobile station; Fig. 13 is a flow diagram illustrating the functions performed according to the invention when a virtual maximum output power value is used for a base station; Fig. 14 is a flow diagram illustrating the functions performed according to the invention when a maximum virtual output power value is used for a mobile station. Fig. 15 is a flow diagram illustrating the functions performed in accordance with the invention when the output power values for a base station are automatically set; and Figure 16 is a flow chart illustrating the functions performed in accordance with the invention when the output power values for a mobile station are automatically set.
DETAILED DESCRIPTION OF THE MODES With reference to Figure 1, a conventional cellular radio communication system of the type to which the present invention belongs in general is illustrated. In Figure 1, an arbitrary geographic area can be divided into a plurality of contiguous radio coverage areas, or C1-C10 cells. While the system of Figure 1 shown by way of example includes only 10 cells, it should be clearly understood that in practice the number of cells will be much greater. Associated with and located within each of the cells C1-C10 is a base station designated as one corresponding to one of a plurality of base stations B1-B10. Each of the base stations B1-B10 includes a transmitter, a receiver and a base station controller as are well known in the art. In Figure 1, the base stations B1-B10 are located illustratively in the center of each of the C1-C10 cells, respectively, and are equipped with omni-directional antennas. However, in other cellular radio system configurations the base stations B1-B10 may be located near the periphery, or otherwise, away from the center of the C1-C10 cells and may illuminate the C1-C10 cells with signals from radio in an omni-directional or directional way. Therefore, the representation of the cellular radio system of Figure 1 is for purposes of illustration only and is not intended as limiting the possible implementations of the cellular radio system within which the present invention is implemented. Still in relation to Figure 1, a plurality of mobile stations M1-M10 can be found within the C1-C10 cells. Again, in Figure 1 only 10 mobile stations are illustrated, but it should be understood that the actual number of mobile stations will be much greater in practice and will invariably greatly exceed the number of base stations. In addition, although none of the mobile stations M1-M10 can be located in any of the C1-C10 cells, the presence of [sic] absence of the mobile stations M1-M10 and any of the C1-C10 cells, in particular, must be understand that it depends in practice on the individual wishes, that the mobile stations M1-M10 can wander in the cell from one place to another or from a cell to an adjacent cell or neighboring cell, and even from a cellular radio system served by an MSC to another system. Each of the mobile stations M1-M10 is capable of initiating or receiving a telephone call through one or more of the base stations B1-B10 and a mobile switching center MSC. A mobile switching center MSC is connected by communication links, for example, wires to each of the illustrative base stations B1-B10 and to the fixed public switched telephone network PSTN, not shown, or a similar fixed network which may include an integrated system digital network (ISDN) installation. The main connections between the mobile switching center MSC and the base stations B1-B10, or between the mobile switching center MSC and the PSTN or ISDN are not fully shown in figure 1, but are well known to those who have the skills ordinary in the art. In the same way, it is also known to include more than one mobile switching center in a cellular radio system and to connect each additional mobile switching center to a different group of base stations and to other mobile switching centers through a cable or links of radio. Each MSC is able to control in a system the management of the communication between each of the stations B1-B10 and the mobile M1-M10 in communication with it. For example, an MSC will control the paging of a mobile station considered within the geographic area served by its base stations B1-B10, in response to the reception of a call for this mobile, the allocation of the radio channels to a mobile station by means of a base station upon receiving the page response from the mobile station, as well as the hands-off mode of communications with a mobile station from one base station to another in response to the path of the mobile through the system, from cell to cell, while communication is in progress. Each of the C1-C10 cells is assigned to a plurality of voice or sound channels or at least one control channel, such as a forward control channel (FOCC). The control channel is used to control or supervise the operation of the mobile stations by means of the information transmitted to, and received from, those units. This information may include the signals of the incoming call, the signals of the outgoing call, the page signals, the page response signals, location registration signals, voice channel assignments, maintenance instructions and instructions " hands off "as one mobile station travels outside the radio coverage of one cell and enters the radio coverage of another cell. Numerous mobile cellular systems have been proposed in the art and accordingly the person skilled in the art does not require a detailed description of how a system, such as that illustrated in Figure 1, operates to understand and apply the present invention. This invention has application in all types of cellular communication systems in which the regulation of the transmission power can be implemented. This includes the new PCS systems that operate in the 1900 MHz range. In one embodiment of the invention, the automated arrangement of the output power values for some, but not all, channels is implemented in a cellular system , like that of Figure 1, operating in accordance with the EIA / TIA IS-54-B standard which is incorporated herein by reference. The IS-54 standard defines a double analog / digital system. In this analog / digital double system, usually, the output power levels in the digital voice channels of the base station and mobile are regulated automatically. The automatic regulation of the power levels of the digital voice channel can be achieved in accordance with the invention described in the commonly assigned and previously cited US Patent Application No. 061,000, filed on May 14, 1993. This application is incorporated in the present as a reference. In accordance with this known method of automatic power regulation, the transmission power levels of the digital voice channel are determined by means of an MSC in cooperation with the base stations of the system or only by means of the base stations. After receiving a signal from a mobile station, a base station measures the various parameters associated with the received signal to determine a transmission power to be sent to the mobile station, as described below. It will be understood that it is usually better for the MSC and / or base stations to control the necessary power regulation tasks, although in principle mobile stations can also be used. The power level of the digital voice channel for the transmissions from the base station to the mobile station (downlink) or from the mobile to the base (uplink) is regulated to achieve a carrier-to-white interference ratio (C / I) which, in general, is a function that monotonically decreases the level of interference present in the channel and the gain (loss of negative path) involved in the transmission. Thus, the power regulation scheme does not imply a fixed white C / I ratio or an intensity of the received white signal. On the other hand, it may be necessary to determine the level of interference, and in the general case, the path loss or gain, to find the appropriate C / I target ratio. In the following description of the regulation function of the digital voice channel according to the teachings of the aforementioned application, the level of interference is designated by I when describing the C / I ratio, (traditional) and by i in the formulas, but they are equivalent. The parameters p, p ', g, i, I, P, SS, a, B and C / I are used for convenience in logarithmic form of dB. In this way, the gain g, which is obtained from a difference between the received power level and the known transmission power level, as described below, is simply given by a subtraction. The parameters can instead be used in their equivalent linear forms with appropriate settings for the formulas. To determine the level of interference i, a measurement of the quality of the signal, for example the BER or the content of the bit error, is made in the receiving station in any of the different ways known to those skilled in the art. In the ElA / AIA IS-54-B, the word synchronization (SYNC) and / or the digital verification color code (DVCC) received by the receiving station in the digital voice channel can be compared to the known sequence or code transmitted. In this way, it is possible to determine the number of errors during the time. From this BER value it is possible to determine the corresponding C / I ratio using an empirical translation tables, as is known in the art. Then, if the intensity of the received signal SS is also measured, the interference i can be determined from the following relationship: i = SS - C / I where all the parameters are in dB.
For the general technique of voice channel power regulation, the channel gain or path loss is easily determined from the difference between the received power level (which can be measured) of a connection and its power level. transmission (which can be known a priori). If these levels are measured in dB, simple subtraction produces the desired path loss. Figure 2 shows an example of the proper functional relationship between the C / I or white ratio and the level of interference. It will be understood that as the interference increases, the transmission power to compensate increases; but in the figure, the transmitting station will not arrive at the same C / I ratio, but at a lower relation. Since the increase in interference "seen" by other connections due to the power increase is then lower than this would have been for a power increase directed to a "previous" C / I ratio, the system can cover a new C ratio. / I although lower, as the transmitters for those other connections increase their transmission powers. Any function that decreases monotonically may be adequate, as long as the function has a first derivative of the C / I target with respect to the interference that is in the range of about -2 to 0. This is necessary for stability. This is also desirable for the derivative to be in the range of about -1 to 0 to increase the capacity in the system. Now it seems that a good value is close to -0.3. The regulation of the transmission power produces a stable system that has a degradation at higher traffic levels where the interference is higher and, therefore, the white C / I will be lower. The C / I target is also functionally related to the path loss or gain in the connection, and the shape of the relationship may be similar to that shown in Figure 2. In particular, a function that decreases monotonically and the first derivative of the white C / I with respect to the gain is not critical but it can be in the range of 0 to 1. The following general relationship presents the principle of power regulation of the voice channel. The regulation is carried out periodically according to: P = a - Bg (g) + B? (I) where 0 < dBi / di < 1 for stability. In the aforementioned general relationship, p is the transmission power of the transmitting station; it is a predetermined constant; Bg (g) is a default function of gain g in the connection (for uplink or downlink); and Bi (i) is a predetermined function of the interference power (disturbance) at the receiving station. The interference power is the sum of the contributions of other call connections that use the same channel. The origin of the co-channel interference is irrelevant for the operation, although the co-channel interference in a cellular system, most of the times, arises between the transmitters in different groups of cells because the frequency planning by the common prevents co-channel disturbances in the same group. The scheme of the power regulation of the digital voice channel is based, in the general case, on the gain of the particular connection and the level of interference. The general relationship indicates the condition of the steady state but can be used in an iterative process to reach the steady state. It will be understood that the relationship shown in Figure 2 is a white function, that is, it shows the C / I values to reach them in any situation. The iterations are necessary to reach a final state in the curve because a change in the power of the transmission influences C / I which in turn requires a greater adjustment of the transmission power. To regulate the power of a transmitting station, it is necessary to determine the parameters in the general relationship. The transmitting station is then ordered in any suitable way.
The constant represents a predetermined acceptable power level at a particular distance. Specifically, a is adjusted so that a predefined distance interference dominates over the noise in most of the links, at this power level the system has a reasonable quality. The constant only affects the average transmission power and not the capacity in a medium where the interference dominates the random noise level, that is, in a system limited by interference. As an example, a can be set at the maximum acceptable interference level. A good performance in relation to the capacity of the system can be obtained when the functions of gain and interference are as follows: - Bg (g) = 0.7 g, and Bi (i) = 0.7 i Other functions of gei can be used, including non-linear, but the slope of the function of i must be less than 1 for stability, as indicated in the above. The slope of the function of g is currently preferred between 0.5 and 1. The graphical representations of the useful B? (I) and Bg (g) are represented in figures 3a and 3b. It will be seen, from the general relationship mentioned above, that a call suffering an increased interference level will be given a higher transmission power level, but one associated with a lower C / I ratio than the C / I ratio. associated with the previous lower transmission power level. If it were otherwise, the problems of the previous systems would occur where the transmitting stations transmit at the maximum permissible power level (the "subscriber effect"). Also, the transmission power level p will decrease when the intensity of the desired received signal is exceeded, for example, when a mobile station moves to its base station (see Figure 3b). As the path loss decreases and the gain increases, the system effectively moves to the right in FIG. 3b, thereby reducing the value of a - Bg (g), which results in a lower transmit power. in the next iteration. The regulation of the power of the voice channel can be done according to Figure 2 which takes into account only the level of disturbance. In this way, if the disturbance level does not change while a mobile station changes its distance from the base station, the transmission power level changes, so that the received C / I ratio does not change. In other words, complete compensation is provided for the gain changes (ie dBg / dg = 1) but less than full compensation is provided for disturbance level changes (ie, dBx / di <1). Alternatively, the regulation of the power of the voice channel can be done according to Figure 4, which shows the ratio of the C / I target as a function that monotonically decreases the power level transmitted P and takes into account the level of present transmission power. Using Figure 4, power regulation is simpler than using Figure 2 because a determination of the level of disturbance level i is unnecessary. On the other hand, power regulation using Figure 4 provides less than full compensation not only for changes in the level of disturbance (which is necessary for stability) but also for changes in "the distance of the radius" between the mobile and base stations (which is not necessary for stability). Because this is generally acceptable, the power regulation according to Figure 4 can be preferred over the power regulation according to Figure 2. The aforementioned general relationship can be used iteratively to arrive at a optimal level of transmission power and to accommodate temporary variations in the level of gain and / or interference. It is currently preferred that the transmission power level be updated around about 0.5 seconds. In the regulation of the power where Bg (g) and Bj. (I) are linear as in the previous, the transmission power for the next period, p ', can be represented in general by the following scalar expression: p' = a - B ((? -G) - i) where? is between 0 and 1 and B, which is the slope of Bg (g) and Bi (i), is between 0 and 1 for stability. For ? = 1 this becomes: p '= a - B - (g-i) where the parameters a, p', g, i are for convenience in dB, when are the parameters p and C / I in the following expressions. However, since: C / I = p + g - i for a connection in a system limited by interference, then the transmission power of the next period is given by the following expression of the known parameters: p '= a - B- (C / I - p) where p is the current period transmission power. When the system has reached a steady state, that is, when p '= p, then: p = a / (l - B) - (B / (l - B)) - C / I of which the steady state C / I and the transmission power level when B = 0.7 are given by the following expression: p = /0.3 - (0.7 / 0.3) - C / I where the C / I ratio is determined from the quality parameter of the signal, such as the BER as described in the above. The transmit power level is increased by 2.3 dB when the interference level is increased by 1 dB. Other users experience increased interference and act in the same way in response to the disturbance. After a period, the system is set to a steady state in which the final decrease in the C / I ratio is less than 1 dB because some of the increased interference has been compensated by the increased transmission powers. If the transmission power has been increased to reach a previous C / I ratio and the other users have done the same, the transmission power would have to increase progressively until reaching a maximum. On the other hand, if the transmission power has not been fully increased, the connection C / I ratio would have to be reduced by 1 dB. If the quality of some calls is going to be reduced in a system, it would be preferable the quality of those calls that cause interference more than the calls that suffer from it. A regulation curve for this system is shown in Figure 4, where the C / I target is a function of the transmission power that is used for the connection. For a given traffic situation in a system that regulates the power of the voice channel according to Figure 4, the quality of the calls at the limit of one cell would most likely be less than the quality of calls within the cell. cell. Also, the C / I ratio for calls inside the cell for the power-regulated system is lower than the C / I for these calls in an unregulated system, otherwise no improvement would be made. An advantage of the regulation of the power of the voice channel, according to Figure 4, is its relatively easy implementation because the white C / I ratio only depends on the power of the transmission, which is known, and not it is necessary to determine the level of disturbance i. Figure 5 illustrates a system that uses power regulation of the dil voice channel. This system is similar to the system described in commonly assigned United States Patent Application Serial No. 941,307 filed September 4, 1992, which is incorporated herein by reference. This system can be implemented in the system shown in figure 1, with, for example, block 10 of figure 5 implemented in one of the mobile stations M1-M10 and block 50 of figure 5 implemented in one of the the base stations B1-B10. The mobile station 10 has a means 30 for transmitting the radio signals to a base station 50 having a means 60 for receiving the radio signals and measuring its power level. The base station 50 has a means 70 for transmitting the radio signals to the mobile station 10 having a means 40 for receiving the radio signals and measuring its power level. The receiving and measuring means 60, 40 also determine the loss or gain of the channel path and the quality of the received signals, including the C / I ratio, as described above. A method for measuring the level of interference i during periods of silence is described in commonly assigned US Patent Application Serial No. 691,221, filed on April 25, 1991, which is incorporated herein by reference. When the power of the digital voice channel of the mobile station is to be regulated, suitable data signals reflecting the measurements of the intensity and quality of the received signal are provided by the receiving means 60 for a signal processor 80, which determines the new transmit power level of the voice channel or the new value of the C / I target in a manner described in the foregoing. The processor 80 then provides a suitable command signal to a transmitter 70 in the base station 50; the transmitter 50 sends the command signal to the mobile station 10, instructing the mobile station 10 to transmit at the new transmit power level of the voice channel associated with the new value of the C / I target. A means 40 for receiving the command sends the command to a suitable processor 20, which causes the transmitting means 30 to transmit at the new transmit power level associated with the new value of the C / I target. The regulation of the transmission power of the voice channel of the base station 50 is done in a manner analogous to the functions performed by means of the equivalent blocks of the medium of the exchanged base and mobile stations. Figure 6 is a table that exemplifies the channel types and the power control method that is used for each type of channel in an IS-54-B system using the power regulation of the digital voice channel. The preferred embodiment of the present invention involves the implementation in the IS-54-B system of a method of comparison of all power levels established manually, fixed, as shown in Figure 6, with maximum values of the levels of power established through the regulation of power transmission in automatically established channels, such as the digital voice channel. The information obtained from these comparisons is then used by the operators of the system to make decisions about manually adjusting the power levels in the other channels. Alternatively, the system uses the information to automatically adjust the power levels in the other channels. In the present invention, the maximum power level of the base station established for all the digital voice channels of the regulated base station, after a reasonably long time, is considered as a maximum level of real power (TMax) for the station base. Figure 7 is a histogram illustrating the number of uses of each output power level compared to the power levels for the regulated digital voice channels of the base station, displayed at a set interval for a set period of time. In Figure 7 the number of uses is shown on the y-axis and 700 and the power levels are shown on the x-axis 702. The possible time values for sampling can be 5-minute intervals over a 48-hour period. The TMax value is determined by taking the actual maximum power level used during the period. In the sampling of Figure 7, TMax 704 would have a value of 36 dBm. Alternatively, the system of the recent invention gathers the data in the distribution of the power levels for the regulated digital voice channels. After a sufficiently long period of time, the system selects a value that is equal to or greater than the power level of the base station of the regulated digital voice channel for a given percentage of time. This value is known as the maximum virtual power level (VMax) for the base station. Figure 8 is a graph of the cumulative number of uses at or below each base station power level compared to the power level of the base station taken from the sampling data shown in Figure 7. In the figure 8 The cumulative number of uses is shown on the y-axis and 800 and the power levels are displayed on the x-axis 802. A VMax value is determined by finding the power level that is equal to or greater than the power level used for a percentage established of the sampled uses. A possible value would be 90%. The use of 90%, in figure 8, VMax 804 is equal to 32 dBm. The percentage value chosen must be higher to be taken into account by most mobile stations within the coverage area of the base station. In one embodiment of the invention these functions are implemented within the various functional blocks of the system shown in Figure 5. In this implementation, the transmit power levels of the digital voice channel of the base station sent by the command signals from the mobile stations, such as the mobile station 10 operating in the coverage area of a base station 50, are stored in a memory of the processing means 80 and sampled at each sampling interval. The samples of the power level for each interval are then stored in a separate memory of the processing means 80. In a conventional system there is more than one mobile station equivalent to the mobile station 10, from which the transmission power levels are sent. of the digital voice channel of the base station. The base station 50 transmits each of these mobile stations in a separate digital voice channel. The TMax and VMax values for these digital voice channels of the base station of a base station 50 are determined in a processing means 80 at the end of each sampling period from the samples that are in memory. The timers for the intervals and sampling periods are contained within the processing medium. As an alternative, the complete set of all the new transmit power levels of the digital voice channel can be used to determine TMax and VMax at the end of the appropriate sampling period. In an analogous way, TMax or VMax are also determined for mobile stations within a coverage area of the base station. Figure 9 is a histogram that exemplifies the number of uses of each output power level of the regulated channel of the base station, compared to the output power levels for the regulated speech channels sampled in a series of intervals during a established period of time. In Figure 9 the number of uses is shown on the y-axis 900 and the power levels of the base station are shown on the x-axis 902. The possible time values for sampling can be 5-minute intervals during a period of 48 hours. The TMax value is determined by taking the maximum power level used during the period. During sampling, as can be seen in Figure 9, TMax 904 would have a value of 36 dB. Figure 10 is a graph of the cumulative number of usage at or below each power level of the mobile station compared to the power level of the mobile station taken from the sampling data shown in Figure 9. In the Figure 10 The cumulative number of uses is shown on the y-axis and 1000 and the power levels are displayed on the x-axis 1002. VMax is determined by finding the power level that is equal to or greater than the power level used for a given percentage of sampled uses. A possible value would be 90%. The 90% use in Figure 10 VMax 1004 is equal to 32 dBm. These functions are also implemented within the various functional blocks of the system shown in Figure 5. As the base station 50 performs the regulation of the power of the digital voice channel, all the new levels of transmit power of the voice channel digital signals sent to the mobile stations, such as the mobile station 10, by the command signal, are stored in a memory contained in the processing means 80 and sampled in each sampling interval. Each sample is stored in a separate memory section. In a common system there is more than one mobile station equivalent to the mobile station 10, each one transmitting to the base station 50 in a separate digital voice channel, to which commands of the transmit power level of the voice channel are sent. digital of the mobile station. The time counters for the intervals and sampling periods are contained within the processing medium. The TMax and VMax values for the mobile stations within the coverage area of the base station 50 are determined in the processing means 80 of the base station 50 at the end of the appropriate sampling period from the stored samples. As an alternative, the complete series of all the new transmit power levels of the digital voice channel can be used to determine TMax and VMax at the end of the appropriate sampling period. After determining a TMax or VMax value, the system then makes some comparisons. The output power of the TMax or VMax digital voice channel set for a base station is compared against the output power level values defined by the operator for the fixed radio channels transmitted by the base station, including the channel level of the base station. operator-defined analogue digital voice base (OBAVC), the level of the base analog control channel defined by the operator (OBACC), and the base digital control channel level defined by the operator (OBDCC). The output power of the digital voice channel of the base station TMax or VMax is also compared against the maximum base power level defined by the operator that must not be exceeded by the regulation of the power of the digital voice channel of the base station for this base station (OBMAX). The system also compares the output power of the mobile station of the TMax or VMax digital voice channel established by the regulation of the power of the mobile station against, first, the power output levels defined by the operator for the radio channel of fixed power transmitted by the mobile station within the coverage of the base station including the level of the mobile analog control channel defined by the operator (OMACC) and the level of the mobile digital control channel defined by the operator (OMDCC); second, the initial power levels defined by the operator for the voice channels transmitted by the mobile stations within the coverage of the base station, including the level of the initial mobile analog voice channel defined by the operator (OIAVC) and the level of the initial mobile digital voice channel defined by the operator (OIDVC); and third, the maximum mobile power level defined by the OMMAX operator) which must not be exceeded by the regulation of the power of the digital voice channel for the mobile stations within the coverage of the base station. The aforementioned comparisons are performed by the software within the processing means 80 of FIG. 5. The system automatically provides the reports to the operator if any discrepancy arises from the aforementioned comparisons. Depending on the implementation option, a discrepancy can be defined as any measurable difference between the compared parameters. On the other hand, it can also be defined as a difference that exceeds a predefined margin. Reports to the operator can be expressed in different ways such as alarms, print outs or graphic presentations. The processing means 80 of the base station 50 can also send appropriate command signals to the transmitting means 70 to transmit the results to be presented to the operator of the mobile station. The operator can then use the reported information to manually set the power levels so that there are no discrepancies. Fig. 11 is a flowchart exemplifying the functions performed in accordance with the invention when using the power and output value TMax for a base station using the power regulation of the digital voice channel. The process for determining TMax begins at step 1100 where the time counters for the sampling period and the sampling interval are started. The process will sample the power levels at intervals established by the interval timer during a period established by the chronometer of the sampling period. The process then moves to step 1102 and waits for a signal from the sampling interval timer. In step 1104 the signal is received from the sampling interval timer. From step 1104 the process moves to step 1106 and samples and stores the values of power levels to be used in all active voice channels of the base station. The process then moves to step 1108 to determine if the sampling period has ended. If the sampling period has not ended, the process returns to step 1102 and waits for another signal from the sampling interval timer. However, if in step 1108 the sampling period has expired, the process moves to step 1110 and a TMax value is determined. From step 1110 the process moves to step 1114 and then the process begins to compare the TMax value with the power values for the various transmission channels of the base station. In step 1114 TMax is compared with the OBACC. If in step 1114 OBACC and TMax are equivalent, the process is moved to step 1118. However, if in step 1114 OBACC and TMax are not equivalent the process is moved to step 1116 where the system operator is informed of the process. difference in the two values. The process then moves from step 1116 to step 1118. In step 1118 TMax is compared with OBAVC. If in step 1118 OBAVC and TMax are equal, the process moves to step 1122. However, if in step 1118 OBAVC and TMax are not equivalent the process moves to step 1120 where the system operator is informed of the process. difference in the two values. The process then moves from step 1120 to step 1122. In step 1122 TMax is compared with the OBDCC. If, in step 1122 OBDCC and TMax are equivalent, the process moves to step 1126. However, if in step 1122 OBDCC and TMax are not equivalent the process moves to step 1124 where it is reported to the system operator the difference in the two values. The process then moves from step 1124 to step 1126. In step 1126 TMax is compared with OBmax. If, in step 1126 OBmax and TMax are equivalent, the process moves to step 1130 where the process ends.
However, if in step 1126 it is determined that OBmax and TMax are not equal, the process moves to step 1128. In step 1128 the difference in the two values is reported to the system operator. The process then moves from step 1128 to step 1130 where the process ends. The system operator can now use any of the reported differences to adjust the output power levels in the appropriate channels of the base station. Figure 12 is a flowchart that exemplifies the functions performed in accordance with the cellular system when a TMax output power value is used for the mobile stations operating within the area of a base station using the power regulation of the channel. digital voice The process for determining TMax begins at step 1200 where the chronometers of the sampling period and the sampling interval are started. Then, the process moves to step 1202 and waits for a stopwatch signal from the sampling interval. In step 1204 the signal is received from the sampling interval timer. From step 1204 the process moves to step 1206 and samples and stores the values of the power levels to be used in all the active voice channels of the mobile stations within the area of the base station. The process then moves to step 1208 to determine if the counter of the sampling period has expired. If the sampling period counter has not expired, the process returns to step 1202 and waits for another signal from the sampling timer. However, if in step 1208 it is found that the sampling period has not concluded, the process moves to step 1210 and the value of TMax is determined. From step 1210 the process moves to step 1214 and then the process begins to compare the TMax value with the power values for the various channels of the mobile station for the mobile stations that are within the area of the base station. In step 1214 TMax is compared with the OMACC. Yes in step 1214 OMACC and TMax are equivalent, the process moves to step 1218. However, if in step 1214 it is determined that OMACC and TMax are not equal, the process moves to step 1216, where it is reported, to the system operator , the difference in the two values. The process then moves from step 1216 to step 1218. In step 1218 TMax is compared to OMDCC. If in step 1218 it is found that OMDCC is equal to TMax, the process moves to step 1222. However, if in step 1218 it is determined that OMDCC is not equal to TMax, the process moves to step 1220, where the difference in the two values is reported to the system operator. The process then moves from step 1220 to step 1222. In step 1222 TMax is compared with the OMMax. If in step 1222 it is determined that OMMax is equal to TMax, the process moves to step 1226. However, if in step 232 [sic] it is determined that OMMax is not equal to TMax, the process moves to step 1224 , where the difference in the two values is reported to the system operator. The process then moves from step 1224 to step 1226. In step 1226 TMax is compared to OIAVC. If in step 1226 it is determined that OIAVC is equal to TMax, the process moves to step 1230 where the process ends. However, if in step 1226 it is determined that OIAVC is not equal to TMax, the process moves to step 1228. In step 1228 the difference in the two values is reported to the system operator. The process then moves from step 238 [sic] to step 1230. In step 1230 TMax is compared with OIDVC. If in step 1230 it is determined that OIDVC is equal to TMax, the process moves to step 1230 where the process ends. However, if in step 1230 it is determined that OIDVC and TMax are not equal, the process moves to step 1232. In step 1232 the difference in the two values is reported to the system operator. The process then moves from step 1232 to step 1234 where the process ends. The system operator can now use any of the reported differences to adjust the output power levels in the appropriate mobile station channels by sending the appropriate command to the mobile stations with the coverage area of the base station.
Figure 13 is a flowchart exemplifying the functions performed in accordance with the cellular system when the value is used for an output power VMax for a base station, using the power regulation of the digital voice channel. The process for determining VMax begins at step 1300 where the sampling timers and sampling interval are started. The process then moves to step 1302 and waits for a signal from the sampling interval timer. The stopwatch signal for the sampling interval is received at 1304. From step 1304 the process moves to step 1306 and samples and stores the values of the power levels to be used on all active digital voice channels of the Base station. The process then moves to step 1308 to determine if the stopwatch of the sampling period has ended. If the sampling period has not ended, the process returns to step 1302 and waits for another stopwatch signal for the sampling interval. However, if in step 1308 it has been found that the sampling period has expired, the process moves to step 1310 and a value of VMax is determined. From step 1310 the process moves to step 1312 and then the process begins to compare the VMax value with the power values for the various transmission channels of the base station. In step 1312 VMax is compared to the OBAVC. If in step 1312 it is determined that VMax is equal to OBAVC, the process moves to step 1316. However, if in step 1312 it is determined that OBACC is not equal to VMax, the process moves to step 1314 where reports to the system operator the difference in the two values. The process then moves from step 1314 to step 1316. In step 1316 VMax is compared to OBAVC. If in step 1316 it is determined that VMax is equal to OBAVC, the process moves to step 1320. However, if in step 1316 it is determined that OBACC is not equal to VMax, the process moves to step 1318, where The difference in the two values is reported to the system operator. The process then moves from step 1318 to step 1320. In step 1320, VMax is compared to OBDCC. If in step 1320 it is determined that VMax is equal to OBDCC, the process moves to step 1316. However, if in step 1320 it is determined that OBDCC is not equal to VMax, the process moves to step 1322, where The difference in the two values is reported to the system operator. The process is then moved to step 1320 to step 1324. In step 1324 VMax is compared to OBMAX. If in step 1324 it is determined that VMax is equal to OBMAX the process is moved to step 1328 where the process ends. However, if in step 1324 it is determined that OBMAX is not equal to VMax, the process moves to step 1326, where the difference in the two values is reported to the system operator. The process then moves from step 1326 to step 1328 where the process ends. The system operator can now use some of the reported differences to adjust the output power levels on the appropriate base station channels. Figure 14 is a flowchart exemplifying the functions performed with the invention when an output power value VMax is used for a mobile station using the power regulation of the digital voice channel. The process for determining VMax begins at step 1400 where the sampling timers and sampling interval are started. The process then moves to step 1402 and waits for a signal from the sampling interval timer. In step 1404 the signal of the sampling interval timer is received. From step 1404 the process moves to step 1406 and samples and stores the power levels to be used in all the active voice channels of the mobiles within the area of the base station. The process then moves to step 1408 to determine whether the stopwatch of the sampling period has ended. If the chronometer of the sampling period has not ended, the process returns to step 1402 and waits for another signal from the sampling interval timer. However, if in step 1408 it is found that the sampling period has expired, the process moves to step 1410 and a value of VMax is determined. From step 1410 the process moves to step 1412 and then the process begins to compare the VMax value with the power values for the various transmission channels of the base station for the mobile stations operating within the base station area. In step 1412 VMax is compared with OMACC. If in step 1412 it is determined that VMax is equal to OMACC, the process moves to step 1416. However, if in step 1412 it is determined that OMACC is not equal to VMax, the process is moved to step 1414 where reports to the system operator the difference in the two values. The process then moves from step 1414 to step 1416. In step 1416 VMax is compared to the OMDCC. If in step 1416 it is determined that VMax is equal to OMDCC, the process moves to step 1420. However, if in step 1416 it is determined that OMDCC is not equal to VMax, the process moves to step 1418 where it is reports to the system operator the difference in the two values. The process then moves from step 1418 to step 1420. In step 1420 VMax is compared with OMMAX. If in step 1420 it is determined that VMax is equal to OMMAX, the process moves to step 1416. However, if in step 1420 it is determined that OMMAX is not equal to VMax, the process is moved to step 1422 where reports to the system operator the difference in the two values. The process then moves from step 1422 to step 1424. In step 1424 VMax is compared to OIAVC. If in step 1424 it is determined that VMax is equal to OIAVC, the process moves to step 1428. However, if in step 1424 it is determined that OIAVC is not equal to VMax, the process moves to step 1426 where it is reports to the system operator the difference in the two values. The process then moves from step 1426 to step 1428. In step 1428 VMax is compared to OIDVC. If in step 1428 it is determined that VMax is equal to OIDVC, the process moves to step 1432, where the process ends. However, if in step 1428 it is determined that OIDVC is not equal to VMax, the process moves to step 1430 where the difference in the two values is reported to the system operator. The process then moves from step 1430 to step 1432 where the process ends. In another embodiment of the invention, the system can automatically adjust the power levels defined by the operator based on the aforementioned comparisons. These parameters for the mobile station and the base station can be set equal for the TMax or VMax power levels calculated from the power regulation of the digital voice channel. As an option, there may be some comparison in the TMax or VMax power value before establishing the power level parameters as automated. A preferred implementation would be to use the TMax value to establish the maximum power levels that should not be exceeded by the regulation of the power of the digital voice channel and use the VMax value for the other power level parameters. One implementation is in the mobile station 10 and the base station 50 of Figure 5. After the software within the processing means 80 reports that there is a discrepancy in the comparison in the regulated and unregulated channels, the commands are sent from the processing means 80 to the transmitting means 70 for setting the output power levels of the base station 50 to TMax or VMax after these values are determined in the processing means 80. The processing means 80 may also provide a signal of command to the transmitting means 70 to send a command signal to the mobile station 10 ordering the mobile station to change its transmission levels in the unregulated channels to the appropriate TMax or VMax value. Fig. 15 is a flowchart exemplifying the functions performed in accordance with the invention when setting the output power values for a base station in a system using power regulation of the digital voice channel. The process for starting at step 1500 where the sampling period and sampling interval timers start. From the step the process moves to step 1502 and waits for a stopwatch sampling signal for the sampling interval. When the sampling signal is received the process moves to step 1504 to step 1506 where the voice channels in use by the base station are sampled. The process then moves from step 1506 to step 1508. In step 1508 it is determined whether the period of the sampling timekeeper has expired. If in step 1508 it is found that the chronometer for the sampling period has not expired, the process returns to step 1502 and waits for another signal from the sampling timer. However, in step 1508 it is found that the timer for the sampling period has expired, the process moves from step 1508 to step 1510. In step 1510 the process determines TMax from the sampled power levels. From step 1510 the process is moved to step 1512. In step 1512, VMax is calculated from the sampled values. The process then moves from step 1512 to step 1514 where VMax is compared with OBACC. If in 1514 it is determined that VMax is not equal to OBACC, the process moves from step 1514 to step 1516 and in step 1516 sets OBACC to the value of VMax. The process then moves from step 1516 to step 1518. However, if in step 1514 it is determined that VMax is equal to OBACC, the process will move directly from step 1514 to step 1518. In step 1518 VMax is compared to OBAVC . If in step 1518, it is determined that VMax is not equal to OBAVC, the process moves from step 1518 to step 1520 and in step 1520 sets OBAVC to the value of VMax. The process then moves from step 1520 to step 1522. However, if in step 1518 it is determined that VMax is equal to OBAVC, the process will move directly from step 1518 to step 1522. In step 1522 VMax is compared to OBDCC . If in step 1522 it is determined that VMax is not equal to OBDCC, the process moves from step 1522 to step 1524 and in step 1524 sets OBDCC to the value of VMax. The process then moves to step 1524 to step 1526. However, if in step 1522 it is determined that VMax is equal to OBDCC, the process will move directly from step 1526 to step 1526 [Sic]. In step 1526 TMax is compared with OBMax. If in step 1526, it is determined that TMax is not equal to OBMax, the process moves from step 1526 to step 1528, and in step 1528 it sets OBMax to the value of TMax. The process then moves from step 1528 to step 1530 where the process ends. However, if in step 1526 it is determined that TMax is equal to OBMax, the process will move directly from step 1526 to step 1530, where the process ends.
Fig. 16 is a flowchart exemplifying the functions performed according to the invention when setting the output power values for a base station in a system using power regulation of the digital voice channel. The process begins at step 1600 where the chronometers of sampling period and sampling interval are started. From step 1600 the process moves to step 1602 and waits for a sampling interval signal from the sampling timer. When the sampling signal is received the process is moved to step 1604 to step 1606 where the voice channels that are in use by the mobile stations in the area of a base station are sampled. The process then moves from step 1606 to step 1608. In step 1608 it is determined whether the stopwatch of the sampling period has ended. If in step 1608 it is found that the timer for the sampling period has not concluded, the process returns to step 1602 and waits for another signal from the sampling timer. However, in step 1608 it is found that the timer for the sampling period has expired, the process moves from step 1608 to step 1610. In step 1610 the process determines T ax from the sampled power levels. From step 1610 the process is moved to step 1612. In step 1612, VMax is calculated from the values shown. Then the process moves from step 1612 to step 1614 where VMax is compared with OMACC. If at 1614 it is determined that VMax is not equal to OMACC, the process moves from step 1614 to step 1616 and in step 1616 sets OMACC to the value of VMax. The process then moves from step 1616 to step 1618. However, if in step 1614 it is determined that VMax is equal to OMACC, the process will move directly from step 1614 to step 1618. In step 1618 VMax is compared to OMDCC . If in step 1618 it is determined that VMax is not equal to OBAVC, the process moves to step 1618 to step 1620, and in step 1620 sets OBAVC to the value of VMax, the process then moves from step 1620 to step 1622. However, if in step 1618 it is determined that VMax is equal to OBAVC, the process will move directly from step 1618 to step 1622. In step 1622 TMax is compared with OMMAX. If in step 1622 it is determined that TMax is not equal to OMMAX, the process moves to step 1622 to step 1624, and in step 1624 it sets OMMAX to the value of TMax. The process then moves from step 1624 to step 1626. However, if in step 1622 it is determined that TMax is equal to OMMAX, the process will move directly from step 1626 to step 1626 [sic]. In step 1626 VMax is compared to OIAVC. If in step 1626 it is determined that VMax is not equal to OIAVC, the process moves from step 1626 to step 1628 and in step 1628 sets OIAVC to the value of VMax. The process then moves from step 1628 to step 1630. However, if in step 1626 it is determined that VMax is equal to OIAVC, the process will move directly from step 1626 to step 1630. In step 1630 VMax is compared to OIDVC . If in step 1630 it is determined that VMax is equal to OIDVC, the process moves to step 1632 where the process ends. However, if in step 1830 [sic] it is determined that OIDVC and VMax are not equal, the process is nine to step 1632 and in step 1632 it sets OIDVC to the value of VMax. The process then moves from step 1632 to step 1634 where the process ends. As described, the base stations and mobile stations for digital mobile radio systems include processors and memories capable of processing and storing the measured and calculated values necessary for the implementation of the invention. As will be understood, the various steps of the process can be performed at the base station or the mobile station depending on the implementation option. The selection of a suitable processor for use in a particular step of the inventive method will naturally depend on the magnitude in which they are collected., store and process the measurements values in the base station or the mobile station. One of the benefits of this invention is that the overall level of power transmitted by mobile stations and base stations will be reduced, with a concomitant decrease in radio interference. The quality of the transmission between the base stations and the mobile stations will be less limited by the interference and mainly limited by the propagation. Since the entire radio network will adapt to the minimum interference levels, it uses the exact amount of power needed on all channels. There will be gains in radio capacity and reduction in the drainage of current from the mobile station in the batteries due to the reduced levels in the power output of the mobile station. The benefits will be the same if the process is completely automated or the operator manually modifies the power levels according to the reports of this system. It will be apparent to those skilled in the art that this invention has application in all types of systems in which functions equivalent to the regulation of digital voice channel power are implemented and that multiple variations of the invention are possible. For example, it will be possible to apply the invention to a purely digital system and use the invention to establish power values only of the digital channels. In this way, it is considered that the operation and construction of the present invention will be apparent from the aforementioned description. Although the method, apparatus and system has been shown and described as a particular embodiment, it will be readily apparent that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the following claims.

Claims (34)

  1. CLAIMS In a telecommunications system that includes one or more first transceiver devices and one or more second transceiver devices, the first and second transceiver devices that communicate over one or more channels consisting of automatically regulated channels and unregulated channels, a method for establishing the parameters of the output power level in one of the first transceiver devices comprising the steps of: determining a maximum output power level used in one or more of the automatically regulated channels; compare the maximum level of output power with the output power levels set for one or more of the unregulated channels; and reporting discrepancies between the maximum output power level and the output power levels set for one or more of the unregulated channels. The method of claim 1 in which one or more of the automatically regulated channels are digital voice channels. The method of claim 1 wherein the step of determining a maximum level of output power consists of the steps of: starting a first and second stopwatch. sampling the output power levels in each of one or more automatically regulated channels to obtain sampled output power levels, sampling is carried out during the repeated intervals determined by the first timer. Finish the sampling step when the second stopwatch expires. determine a maximum power level from the output power levels sampled. The method of claim 1, wherein the step of determining a maximum level of output power consists of the steps of: starting a stopwatch; sampling the output power levels in each of one or more automatically regulated channels to obtain sampled output power levels, sampling is carried out each time the output power levels are set to a new value; Finish the sampling step when the timer expires. determine a maximum power level from the output power levels sampled. The method of claim 1, wherein the step of determining a maximum level of output power consists of the steps of: starting a first and second stopwatch; Sampling the output power levels in each of one or more automatically regulated channels to obtain sampled power output levels, the sampling is carried out during repeated intervals determined by the first timer. Finish the sampling step when the second stopwatch expires. determine a virtual maximum power level for the output power levels sampled. The method of claim 5, wherein the step of determining a maximum virtual power level consists of the steps of: calculating a power level that is equal to or greater than the power level used for an established percentage of power levels. output power sampled. The method of claim 1, wherein the step of determining a maximum level of output power consists of the steps of: starting a stopwatch; sampling the output power levels in each of one or more automatically regulated channels to obtain sampled output power levels, sampling is carried out each time the output power levels are set to a new value; determine a virtual maximum power level for the output power levels sampled. The method according to claim 7, wherein the step of determining a virtual maximum power level consists of the steps of: calculating a power level that is equal to or greater than the power level used for an established percentage of the power output power levels sampled. The method of claim 1 wherein the comparison step comprises the steps of: determining whether the output power level is equal to a power level defined by the operator for an analog control channel. The method of claim 1, in which the comparison step comprises: determining whether the maximum output level is equal to a power level defined by the operator for an analog voice channel. The method of claim 1, wherein the comparison step comprises: determining whether the maximum level of output power is equal to a power level defined by the operator for a digital control channel. The method of claim 11, wherein the comparison step comprises: determining whether the maximum output power level is equal to a maximum power level defined by the operator for power regulation of the digital voice channel . The method of claim 1, wherein the comparison step comprises: determining whether the maximum output power level is equal to an initial power level defined by the operator for an analog voice channel. The method of claim 1, wherein the comparison step comprises: determining whether the maximum output power level is equal to an initial power level defined by the operator for a digital voice channel. 15. The method of claim 1 further comprises the step: establishing each of the set output power values for one or more of the unregulated channels at a maximum output power level with which it is compared in response to a indication that the report step indicates an inequality. The method of claim 1, wherein the first transceiver device comprises a mobile station and the second transceiver device comprises a base station. The method of claim 1, wherein the first transceiver device comprises a base station and the second transceiver device comprises a mobile station. 18. In a telecommunications system that includes one or more first transceiver devices and one or more second transceiver devices, the first and second transceiver devices that communicate over one or more channels comprise automatically regulated and unregulated channels, a system for establishing the parameters of the output power level in one of the first transceiver devices comprises: the means for determining a maximum level of output power used in one or more of the automatically regulated channels; means for comparing the maximum level of output power with the output power levels set for one or more of the unregulated channels; and the means to report discrepancies between the maximum output power level and the output power levels established for one or more of the unregulated channels. The system of claim 18, wherein one or more automatically regulated channels are digital voice channels. The system of claim 18, wherein the means for determining a maximum level of output power consists of the steps of: the means for initiating a first and second stopwatch; means for sampling the output power levels in each of one or more of the automatically regulated channels to obtain sampled output power levels, the sampling is carried out during repeated intervals determined by the first timer; the means to finish sampling when the second timer expires; the means for determining a maximum power level from the output power levels sampled. The system of claim 18, wherein the means for determining a maximum output power level consists of the steps of: the means for starting the chronometer; the means for sampling the output power levels in each of one or more automatically regulated channels to obtain the output power levels sampled, sampling is carried out each time the power output levels are set to a new value; the means for determining a maximum power level from the output power levels sampled. 22. The system of claim 18, wherein the means for determining a maximum output power level consists of: the means for initiating a first and second stopwatch; the means for sampling the output power levels in each of one or more of the automatically regulated channels to obtain the sampled output power levels, sampling is carried out during repeated intervals determined by the first timer; the means to finish sampling when the second timer expires; the means for determining a virtual maximum power level for the output power levels sampled. The system of claim 22, wherein the means for determining a virtual maximum power level consists of the means for calculating a power level that is equal to or greater than the power level used by a set percentage of the power levels. output power sampled. The system of claim 18, wherein the means for determining a maximum output power level comprises the steps of: the means for starting a stopwatch; the means for sampling the output power levels in each of one or more of the automatically regulated channels to obtain sampled output power levels, the sampling is carried out each time the power output levels are set to a new value; the means to finish sampling when the second timer expires; the means for determining a virtual maximum power level for the output power levels sampled. The system according to claim 24, wherein the means for determining a virtual maximum power level comprises the means to calculate a power level that is equal to or greater than the power level used by a set percentage of the power levels. output power sampled. The system according to claim 18, wherein the comparison means comprises: means for determining whether the maximum output power level is equal to a power level defined by the operator for an analog control channel. The system of claim 18, wherein the comparison means comprises: means for determining whether the maximum output power level is equal to a power level defined by the operator for an analog voice channel. The system of claim 18, wherein the means for comparing comprises: means for determining whether the maximum level of output power is equal to a power level defined by the operator for a digital control channel. The system of claim 18, wherein the means for comparing comprises: the means for determining whether the maximum output power level is equal to a maximum power level defined by the operator for power regulation of the voice channel digital. The system according to claim 18, wherein the means for comparing comprises: means for determining whether the maximum output power level is equal to an initial power level defined by the operator for an analog voice channel. The system of claim 18, wherein the means for comparing comprises: means for determining whether the maximum output power level is equal to an initial power level defined by the operator for a digital voice channel. 32. The system of claim 18 further comprises: means for setting each of the output power levels, for one or more of the unregulated channels, at a maximum output power level with which it is compared in response to a Indicate that the step of reporting indicates an inequality. 53. The system of claim 18, wherein the first receiver device comprises a mobile station and the second transceiver device comprises a base station. 34. The system of claim 18, wherein the first receiver device comprises a base station and the second transceiver device comprises a mobile station.
MXPA/A/1997/007297A 1995-03-27 1997-09-24 System and method for establishing output power parameters in a cellular telecommunication system mo MXPA97007297A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08411426 1995-03-27
US08/411,426 US5634195A (en) 1995-03-27 1995-03-27 System and method for setting of output power parameters in a cellular mobile telecommunication system
PCT/SE1996/000262 WO1996031013A1 (en) 1995-03-27 1996-02-29 System and method for setting output power parameters in a cellular mobile telecommunications system

Publications (2)

Publication Number Publication Date
MX9707297A MX9707297A (en) 1997-11-29
MXPA97007297A true MXPA97007297A (en) 1998-07-03

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