CN114585070B - Random access method, device, user equipment and storage medium - Google Patents
Random access method, device, user equipment and storage medium Download PDFInfo
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- CN114585070B CN114585070B CN202210466767.8A CN202210466767A CN114585070B CN 114585070 B CN114585070 B CN 114585070B CN 202210466767 A CN202210466767 A CN 202210466767A CN 114585070 B CN114585070 B CN 114585070B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/354—Adjacent channel leakage power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/32—TPC of broadcast or control channels
- H04W52/325—Power control of control or pilot channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The disclosure relates to a random access method, a random access device, user equipment and a storage medium, and belongs to the technical field of wireless access. Wherein, the method comprises the following steps: determining initial transmitting power of user equipment, acquiring a target radio frequency parameter corresponding to the initial transmitting power, wherein the adjacent channel leakage ratio under the target radio frequency parameter is greater than that under the standard radio frequency parameter, and controlling the user equipment to transmit signals based on the target radio frequency parameter. Therefore, the method and the device control the user equipment to transmit signals by acquiring the target radio frequency parameter corresponding to the initial transmission power of the user equipment, and improve the linearity of the transmitted signals and the error rate because the leakage ratio of the adjacent channel under the target radio frequency parameter is greater than that under the standard radio frequency parameter, thereby improving the success rate and the speed of random access.
Description
Technical Field
The present disclosure relates to the field of wireless access technologies, and in particular, to a random access method, apparatus, user equipment, and storage medium.
Background
Currently, in a Radio Access Technology (RAT) Technology, a User Equipment (UE) needs to search for a network (network search for short) in a shutdown and flight mode scene in a weak signal environment or an initial idle state, that is, random Access is performed by transmitting a signal, but in a conventional network search process, the linearity of the transmitted signal is low, which results in a high error rate of the signal during channel transmission, so that the success rate of random Access is low, and the speed of random Access is low.
Disclosure of Invention
The present disclosure provides a random access method, an apparatus, a user equipment and a storage medium, which at least solve the problems of low linearity of a transmitted signal in the related art, resulting in a high error rate of the signal during channel transmission, thereby resulting in a low success rate of random access and a low speed of random access.
The technical scheme of the disclosure is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a random access method, including: determining an initial transmission power of the user equipment; acquiring a target radio frequency parameter corresponding to the initial transmitting power, wherein the adjacent channel leakage ratio under the target radio frequency parameter is greater than that under a standard radio frequency parameter; controlling the user equipment to transmit signals based on the target radio frequency parameters.
In one embodiment of the present disclosure, the target radio frequency parameter satisfies at least one of the following conditions: the target power amplifier bias voltage in the target radio frequency parameters is higher than the standard power amplifier bias voltage in the standard radio frequency parameters; a target digital predistortion compression point in the target radio frequency parameters is lower than a standard digital predistortion compression point in the standard radio frequency parameters; and the target quiescent operating current of the power amplifier in the target radio frequency parameters is determined based on the standard quiescent operating current of the power amplifier in the standard radio frequency parameters.
In one embodiment of the present disclosure, the determining the initial transmission power of the user equipment includes: identifying a channel type of a signal transmitted by the user equipment; determining the initial transmit power in response to the channel type being a physical random access channel.
In one embodiment of the present disclosure, the determining the initial transmission power of the user equipment includes: acquiring candidate initial transmitting power; identifying the smaller value of the candidate initial transmission power and the maximum power allowed to be transmitted by the user equipment and configured by the cell where the user equipment is located; determining the smaller value as the initial transmission power.
In one embodiment of the present disclosure, the obtaining the candidate initial transmission power includes: measuring the downlink path loss; calculating the candidate initial transmit power based on the downlink path loss.
In an embodiment of the present disclosure, the calculating the candidate initial transmission power based on the downlink path loss includes: and calculating the sum of the downlink path loss and the target power of the signal transmitted by the user equipment received by the base station to obtain the candidate initial transmission power.
In one embodiment of the present disclosure, the random access method further includes: acquiring the error rate of the signal transmitted by the user equipment; responding to the error rate exceeding a preset error rate threshold value, and adjusting the initial transmitting power;
the step of obtaining the target radio frequency parameter corresponding to the initial transmitting power comprises the following steps:
and acquiring a target radio frequency parameter corresponding to the adjusted initial transmitting power.
According to a second aspect of the embodiments of the present disclosure, there is provided a random access apparatus, including: a determining module configured to perform determining an initial transmit power of a user equipment; a first obtaining module configured to perform obtaining a target radio frequency parameter corresponding to the initial transmission power, wherein an adjacent channel leakage ratio under the target radio frequency parameter is greater than an adjacent channel leakage ratio under a standard radio frequency parameter; a transmitting module configured to perform controlling the user equipment to transmit signals based on the target radio frequency parameters.
In one embodiment of the present disclosure, the target radio frequency parameter satisfies at least one of the following conditions: the target power amplifier bias voltage in the target radio frequency parameters is higher than the standard power amplifier bias voltage in the standard radio frequency parameters; a target digital predistortion compression point in the target radio frequency parameters is lower than a standard digital predistortion compression point in the standard radio frequency parameters; and the target quiescent operating current of the power amplifier in the target radio frequency parameters is determined based on the standard quiescent operating current of the power amplifier in the standard radio frequency parameters.
In an embodiment of the disclosure, the determining module is further configured to perform: identifying a channel type of a signal transmitted by the user equipment; determining the initial transmit power in response to the channel type being a physical random access channel.
In an embodiment of the disclosure, the determining module is further configured to perform: acquiring candidate initial transmitting power; identifying the smaller value of the candidate initial transmission power and the maximum power allowed to be transmitted by the user equipment and configured by the cell where the user equipment is located; determining the smaller value as the initial transmission power.
In one embodiment of the present disclosure, the random access apparatus further includes: a second obtaining module configured to perform obtaining an error rate of a signal transmitted by the user equipment; an adjusting module configured to perform adjusting the initial transmit power in response to the error rate exceeding a preset error rate threshold;
the second obtaining module is configured to perform obtaining of a target radio frequency parameter corresponding to the adjusted initial transmission power.
According to a third aspect of the embodiments of the present disclosure, there is provided a user equipment, including: a processor; a memory for storing executable instructions of the processor; wherein the processor is configured to execute the instructions to implement the method according to the first aspect of the embodiment of the present disclosure.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium, wherein instructions, when executed by a processor of a user equipment, enable the user equipment to perform the method according to the first aspect of embodiments of the present disclosure.
The technical scheme provided by the embodiment of the disclosure at least brings the following beneficial effects: the method comprises the steps of controlling the user equipment to transmit signals by obtaining target radio frequency parameters corresponding to initial transmitting power of the user equipment, and improving linearity of the transmitted signals and error rate due to the fact that the leakage ratio of adjacent channels under the target radio frequency parameters is larger than that of adjacent channels under standard radio frequency parameters, so that the success rate and speed of random access are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure and are not to be construed as limiting the disclosure.
Fig. 1 is a flow chart illustrating a method of random access in accordance with an example embodiment.
Fig. 2 is a flowchart illustrating a method for determining initial transmit power of a user equipment in a random access method according to an exemplary embodiment.
Fig. 3 is a block diagram illustrating a random access apparatus according to an example embodiment.
Fig. 4 is a block diagram illustrating a user device according to an example embodiment.
Detailed Description
In order to make the technical solutions of the present disclosure better understood by those of ordinary skill in the art, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or otherwise described herein. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices and apparatus consistent with certain aspects of the disclosure, as detailed in the appended claims.
In the related art, in a random access process of a user equipment, an uplink synchronization needs to be acquired in a starting-up and closing flight mode scene in an initial idle state, that is, a first network search is performed, or in a weak signal environment (such as an elevator, a basement, a cell edge, and the like), the uplink synchronization needs to be recovered due to uplink desynchronization, that is, a network search is performed again, wherein most of network search processes of the user equipment are caused by the uplink desynchronization due to a weak signal environment.
At present, in the Random Access process, a user equipment obtains an initial Physical Random Access Channel (PRACH) power of the user equipment by measuring a downlink pilot signal, and then the user equipment sets a designated transmission power to transmit the PRACH signal for Random Access, a radio frequency part calls corresponding radio frequency parameters to enable output power to reach a target designated power, the radio frequency parameter calls of different powers are unrelated to whether the transmission signal is the PRACH, if the Access fails, the user equipment tries to increase the transmission power to continue transmission until the transmission power reaches an upper limit, so as to realize Random Access in a weak signal environment. However, the linearity of the transmitted signal is low, so that the quality of the PRACH signal is general, and further, the error rate of the PRACH signal is high, so that the success rate of random access of the user equipment is low, and the speed of the random access is slow.
Based on this, the present disclosure provides a random access method, which controls a user equipment to transmit a signal by obtaining a target radio frequency parameter corresponding to an initial transmission power of the user equipment, so as to improve linearity of the transmitted signal, reduce a bit error rate of the transmitted signal in channel transmission, and improve a success rate and a speed of random access.
It should be noted that the execution subject of the random access method in the embodiment of the present disclosure may be a user equipment, or may also be a server. User equipment includes but is not limited to cell phones, tablet computers, notebooks, desktop computers, vehicle terminals, smart appliances, and the like. The random access method of the embodiment of the present disclosure may be executed by the random access apparatus of the embodiment of the present disclosure, and the random access apparatus of the embodiment of the present disclosure may be configured in any user equipment to execute the random access method of the embodiment of the present disclosure. The random access apparatus of the embodiments of the present disclosure may also be configured in a server, which is not limited to this.
Fig. 1 is a flowchart illustrating a random access method according to an exemplary embodiment, and as shown in fig. 1, the random access method according to the embodiment of the present disclosure may include the following steps S101 to S103.
S101, determining initial transmitting power of user equipment.
In the embodiment of the disclosure, the initial transmission power of the user equipment is determined for subsequent processing. The initial transmission power is a default transmission power roughly determined by the user equipment in an initial state based on the measurement of the downlink pilot signal. As can be understood by those skilled in the art, in the random access phase, the ue is in the open-loop power control mode, that is, the receiver that the ue transmits signals does not need to feedback the reception condition, and the ue determines the transmission power by itself, so that the accuracy of the initial transmission power is poor, and especially in a Frequency Division Duplex (FDD) Frequency band, the continuous adjustment of the access power takes a long time.
It can be understood by those in the art that the user equipment invokes a specific transmission power in the network searching process, different transmission powers correspond to different radio frequency parameters, if the user equipment signal is weak, the error rate of the transmission signal of the user equipment is higher, and the random access speed is general, so that the transmission power can be increased to improve the linearity of the transmission signal, thereby reducing the error rate, and realizing the improvement of the random access speed and the random access success rate.
S102, obtaining a target radio frequency parameter corresponding to the initial transmitting power, wherein the adjacent channel leakage ratio under the target radio frequency parameter is larger than that under the standard radio frequency parameter.
In the embodiment of the present disclosure, the target radio frequency parameter is obtained by optimizing a standard radio frequency parameter with an improvement of an Adjacent Channel Leakage Ratio (ACLR), that is, the Adjacent Channel Leakage Ratio under the target radio frequency parameter is greater than the Adjacent Channel Leakage Ratio under the standard radio frequency parameter. The standard RF parameters are default normal RF parameters, and the target RF parameters are specific RF parameters for raising the linearity of transmitted signal. It should be noted that the initial transmission power corresponds to the target rf parameter one by one, that is, one initial transmission power corresponds to one target rf parameter.
S103, controlling the user equipment to transmit signals based on the target radio frequency parameters.
In the embodiment of the present disclosure, the user equipment is controlled to transmit signals based on the target rf parameters of step S102. It should be noted that, when the user equipment transmits a signal using the initial transmission power, the target radio frequency parameter is called to improve the linearity of the signal transmitted by the user equipment, and the transmitted signal with the improved linearity is transmitted. Alternatively, the user equipment may send the transmission signal to the base station of the cell in which the user equipment is located.
The random access method provided by the embodiment of the disclosure determines the initial transmitting power of the user equipment, obtains the target radio frequency parameter corresponding to the initial transmitting power, and controls the user equipment to transmit signals based on the target radio frequency parameter, wherein the adjacent channel leakage ratio under the target radio frequency parameter is greater than that under the standard radio frequency parameter. Therefore, the method and the device control the user equipment to transmit signals by acquiring the target radio frequency parameter corresponding to the initial transmission power of the user equipment, and improve the linearity of the transmitted signals and the error rate because the leakage ratio of the adjacent channel under the target radio frequency parameter is greater than that under the standard radio frequency parameter, thereby improving the success rate and the speed of random access.
Further, the random access method of the embodiment of the present disclosure may include the following steps.
The step S101 "determining the initial transmission power of the user equipment" in the above embodiment may specifically include the following steps.
Step a, identifying the channel type of the signal transmitted by the user equipment.
In the embodiment of the present disclosure, before determining the initial transmission power, the channel type of the signal transmitted by the user equipment needs to be identified, so as to perform subsequent processing according to the identification result.
It should be noted that, when the random access starts, the channel type of the current transmission signal needs to be identified, and different radio frequency parameters are called for the transmission in the random access process according to different channel types. For example, when the Channel type is PRACH, it indicates that the current access phase is in a random access phase, and the called radio frequency parameter is a target radio frequency parameter, and when the Channel type is Physical Uplink Control Channel (PUSCH) or Physical Uplink Shared Channel (PUCCH), the called radio frequency parameter is a standard radio frequency parameter. Alternatively, identification of the channel type of the signal may be achieved by identifying the physical layer identity of the currently transmitted signal.
And b, responding to the channel type being a physical random access channel, and determining the initial transmitting power.
In the embodiment of the present disclosure, according to the identification result of the channel type of the signal transmitted by the user equipment in step a, if the channel type is the physical random access channel PRACH, the initial transmission power is determined.
And c, acquiring a target radio frequency parameter corresponding to the initial transmitting power, wherein the adjacent channel leakage ratio under the target radio frequency parameter is greater than that under the standard radio frequency parameter.
It should be noted that the target rf parameter satisfies at least one of the following conditions: a target Power Amplifier (PA) bias voltage in the target rf parameters is higher than a standard PA bias voltage in the standard rf parameters; a target Digital Pre-Distortion (DPD) compression point in the target radio frequency parameters is lower than a standard Digital Pre-Distortion compression point in the standard radio frequency parameters; and the target power amplifier quiescent operating current in the target radio frequency parameters is determined based on a standard power amplifier quiescent operating current (Icq) in the standard radio frequency parameters. The bias voltages of the target power amplifier and the standard power amplifier may specifically include but are not limited to: an Average Power Tracking (APT) bias voltage, an Envelope Tracking (ET) peak bias voltage, and the like.
It should be noted that the target quiescent current of the power amplifier is obtained by optimizing the quiescent current of the standard power amplifier. Optionally, the static operating current of the standard power amplifier is randomly optimized, for example, the static operating current of one standard power amplifier in a preset range is stored in a register of the user equipment, a write instruction is sent to the power amplifier through the register to write the static operating current of the standard power amplifier into the power amplifier for testing, the static operating currents of other standard power amplifiers in the preset range perform the same test operation, and finally, the best test result is selected from all test results, and the static operating current of the standard power amplifier corresponding to the test result is the static operating current of the target power amplifier, so that the static operating current of the standard power amplifier is optimized.
It can be understood by those skilled in the art that the target rf parameter refers to an rf parameter determined in a development stage by a parameter set composed of PA bias voltage, DPD compression point, Icq, etc., and the determination method is to increase the ACLR performance to a certain level by debugging the parameter set, for example, according to an evaluation of a power consumption increase degree, according to engineering practice experience, setting the parameter set to 3dB, where a specific parameter set debugging reference is that the higher the PA bias voltage is, the smaller the DPD compression point is, the ACLR performance is performed, and the better the Icq is to be debugged, the flexible adjustment is required according to an actually measured ACLR value, there is no fixed optimization direction, for example, when a normal rf parameter set is determined in a development stage during debugging, under a certain transmission power of a certain frequency band, the PA bias voltage is 3.3V, Icq =255, in this case, ACLR = -39dB, the PA current is 400mA, the PRACH-specific parameter set is set to { PA bias voltage is 3.6V, icq =255}, in which case ACLR = -42dB, PA current is 420 mA.
It should be noted here that, since the target rf parameter for increasing the linearity of the PRACH improves the linearity of the transmitted signal and reduces PA efficiency, so as to increase transmission power consumption, a normal rf parameter needs to be called when transmitting other physical channels, so as to ensure rf power consumption. In a user use scene, because the probability of re-searching the network after the user equipment is in uplink desynchronization under a weak signal environment is lower, the increase of the overall power consumption generated in the random access process of the user equipment in the disclosure is not too large.
And d, controlling the user equipment to transmit signals based on the target radio frequency parameters.
Specifically, steps c-d in this embodiment are the same as steps S102-S103 in the above embodiment, and are not described again here.
Further, the method further comprises:
and e, acquiring the error rate of the signal transmitted by the user equipment.
In the embodiment of the disclosure, the bit error rate of the signal transmitted by the user equipment is obtained for subsequent processing. The error rate is an error rate of a transmission signal in channel transmission.
Step f, responding to the error rate exceeding a preset error rate threshold value, and adjusting initial transmitting power;
step S103 further includes:
and g, acquiring target radio frequency parameters corresponding to the adjusted initial transmitting power.
In the embodiment of the disclosure, the error rate of the user equipment transmission signal obtained in the step e is compared with a preset error rate threshold, if the error rate exceeds the preset error rate threshold, the initial transmission power is adjusted, and if the error rate does not exceed the preset error rate threshold, the initial transmission power is not adjusted, that is, the initial transmission power determined in the step is kept unchanged. It should be noted that the preset bit error rate threshold indicates that the transmission signal sent by the user equipment through the initial transmission power not exceeding the bit error rate threshold can be correctly received and demodulated to complete random access. For example, when the bit error rate threshold is preset to be 10%, that is, the bit error rate exceeds 10%, the initial transmission power is adjusted. Alternatively, the initial transmission power may be increased step by step according to a preset step (e.g., 2 dB) of the cell in which the user equipment is located, so that a Signal Noise Ratio (SNR) of the user equipment is increased, and thus the error rate of the transmission Signal may be reduced, until the transmission Signal may be correctly received and demodulated, that is, the error rate of the transmission Signal does not exceed a preset error rate threshold, the adjustment may be stopped, and the increased initial transmission power may be selected as the new initial transmission power. And acquiring a target radio frequency parameter corresponding to the adjusted initial transmitting power after the adjusted initial transmitting power is obtained.
The random access method provided by the embodiment of the disclosure identifies a channel type of a user equipment transmission signal, determines an initial transmission power in response to the channel type being a physical random access channel, acquires a target radio frequency parameter corresponding to the initial transmission power, wherein an adjacent channel leakage ratio under the target radio frequency parameter is greater than an adjacent channel leakage ratio under a standard radio frequency parameter, controls the user equipment transmission signal based on the target radio frequency parameter, acquires an error rate of the user equipment transmission signal, adjusts the initial transmission power in response to the error rate exceeding a preset error rate threshold, acquires a target radio frequency parameter corresponding to the adjusted initial transmission power, and controls the user equipment transmission signal based on the target radio frequency parameter. Therefore, the method and the device control the user equipment to transmit signals by acquiring the target radio frequency parameter corresponding to the initial transmission power of the user equipment, and improve the linearity of the transmitted signals and the error rate because the leakage ratio of the adjacent channel under the target radio frequency parameter is greater than that under the standard radio frequency parameter, thereby improving the success rate and the speed of random access. Meanwhile, the error rate is judged through a preset error rate threshold value, the adjusting efficiency of the initial transmitting efficiency is improved, and the success rate and the speed of random access are further improved.
Further, as shown in fig. 2, the "determining the initial transmission power of the user equipment" in step S101 and step b in the foregoing embodiment may specifically include the following steps:
s201, obtaining candidate initial transmitting power.
In the embodiment of the disclosure, the candidate initial transmission power is based on the measurement of the downlink pilot signal, the initial transmission power is roughly determined, and the final initial transmission power is finally determined by comparing with the maximum power allowed to be transmitted by the user equipment configured in the cell where the user equipment is located. And acquiring the candidate initial transmitting power for subsequent processing. It should be noted that, the present disclosure does not excessively limit the manner of obtaining the candidate initial transmit power, and may set according to actual situations.
As a possible implementation, the downlink path loss may be measured, and the candidate initial transmit power may be calculated based on the downlink path loss. Optionally, a sum of the downlink path loss and a target power of a signal transmitted by the user equipment and received by the base station may be calculated to obtain the candidate initial transmission power.
And S202, identifying the smaller value of the candidate initial transmission power and the maximum power allowed to be transmitted by the user equipment and configured in the cell where the user equipment is located.
In the embodiment of the present disclosure, the candidate initial transmission power in step S201 is compared with the maximum power allowed to be transmitted by the ue configured in the cell where the ue is located, and a smaller value of the two powers is identified for subsequent processing.
And S203, determining the smaller value as the initial transmitting power.
In the embodiment of the present disclosure, the smaller value identified in step S202 is determined as the initial transmission power, so that the final initial transmission power can be obtained. For example, the ue may roughly determine the final initial transmit power based on the measurement of the downlink pilot signal, and describe the process of determining the initial transmit power, the method for determining the initial transmit power may be represented by the following expression:
where PPRACH is the initial transmit power i.e. the PRACH uplink power of the user equipment,
is the maximum POWER allowed to be transmitted by the user equipment configured in the current cell, PREAMBLE _ RECEIVED _ TARGET _ POWER is the TARGET POWER RECEIVED by the uplink pilot of the user equipment issued by the base station,
is the downlink path loss measured by the user equipment. Wherein the content of the first and second substances,
the calculation method comprises the following steps: when the base station transmits a downlink pilot signal with known power, the user equipment measures the power after receiving the signal, and the difference value between the known base station transmission power and the measured power received by the user equipment is the downlink path loss.
It should be noted here that, when calculating the uplink PRACH, it is roughly considered that the uplink path loss is the same as the downlink path loss, and actually, due to time-varying characteristics of the uplink path loss and the downlink path loss, such as the situations of user equipment moving, a change of a hand-held state, object moving in the environment, and the like, the uplink path loss and the downlink path loss may not be the same, and particularly for the FDD system, because the uplink frequency and the downlink frequency are different, the uplink path loss and the downlink path loss have a larger difference, so when the PPRACH does not exceed the uplink frequency, the PPRACH does not exceed the downlink frequency, and the PPRACH does not exceed the uplink frequency
In the above embodiment, it is noted that, when the transmission power is increased step by step according to the cell setting, the upper limit of the transmission power of the user equipment is the sum of the target power of the received uplink pilot and the uplink and downlink path loss, and the transmission signal of the user equipment in the current network environment with the PRACH uplink power does not necessarily have a proper bit error rate, so that the user equipment may adjust the transmission power if the user equipment is faced with a situation that the bit error rate is high and random access cannot be completed
I.e. when the transmission power of the user equipment is increased
And stopping adjusting the initial transmitting power, and taking the increased initial transmitting power as the new initial transmitting power.
Therefore, the determination of the initial transmission power can be realized by acquiring the candidate initial transmission power and determining the smaller value of the candidate initial transmission power and the maximum power allowed to be transmitted by the user equipment configured in the cell where the user equipment is located as the initial transmission power.
Fig. 3 is a block diagram illustrating a random access apparatus according to an example embodiment. As shown in fig. 3, a random access apparatus 300 according to an embodiment of the present disclosure includes: a determination module 301, a first acquisition module 302 and a transmission module 303.
A determining module 301 configured to perform determining an initial transmit power of a user equipment.
A first obtaining module 302 configured to perform obtaining a target radio frequency parameter corresponding to the initial transmission power, where an adjacent channel leakage ratio under the target radio frequency parameter is greater than an adjacent channel leakage ratio under the standard radio frequency parameter.
A transmitting module 303 configured to perform controlling the user equipment to transmit signals based on the target radio frequency parameters.
In one embodiment of the present disclosure, the target radio frequency parameter satisfies at least one of the following conditions: the target power amplifier bias voltage in the target radio frequency parameters is higher than the standard power amplifier bias voltage in the standard radio frequency parameters; the target digital predistortion compression point in the target radio frequency parameters is lower than the standard digital predistortion compression point in the standard radio frequency parameters; and the target power amplifier quiescent operating current in the target radio frequency parameters is determined based on the standard power amplifier quiescent operating current in the standard radio frequency parameters.
In an embodiment of the present disclosure, the determining module 301 is further configured to perform: identifying a channel type of a signal transmitted by user equipment; in response to the channel type being a physical random access channel, an initial transmit power is determined.
In an embodiment of the present disclosure, the determining module 301 is further configured to perform: acquiring candidate initial transmitting power; identifying the smaller value of the candidate initial transmission power and the maximum power allowed to be transmitted by the user equipment and configured in the cell where the user equipment is located; the smaller value is determined as the initial transmission power.
In an embodiment of the present disclosure, the determining module 301 is further configured to perform: measuring the downlink path loss; candidate initial transmission power is calculated based on the downlink path loss.
In an embodiment of the present disclosure, the determining module 301 is further configured to perform: and calculating the sum of the downlink path loss and the target power of the signal transmitted by the user equipment received by the base station to obtain the candidate initial transmitting power.
In one embodiment of the present disclosure, the random access apparatus 300 further includes: the second acquisition module is configured to acquire the error rate of the signal transmitted by the user equipment; an adjustment module configured to perform an adjustment of an initial transmit power in response to the error rate exceeding a preset error rate threshold;
the second obtaining module is configured to perform obtaining of a target radio frequency parameter corresponding to the adjusted initial transmission power.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the method embodiment related to the apparatus, and will not be elaborated here.
The random access device provided by the embodiment of the disclosure determines the initial transmission power of the user equipment, obtains the target radio frequency parameter corresponding to the initial transmission power, and controls the user equipment to transmit signals based on the target radio frequency parameter, wherein the adjacent channel leakage ratio under the target radio frequency parameter is greater than that under the standard radio frequency parameter. Therefore, the method and the device control the user equipment to transmit signals by acquiring the target radio frequency parameter corresponding to the initial transmission power of the user equipment, and improve the linearity of the transmitted signals and the error rate because the leakage ratio of the adjacent channel under the target radio frequency parameter is greater than that under the standard radio frequency parameter, thereby improving the success rate and the speed of random access.
Fig. 4 is a block diagram illustrating a user device 400 according to an example embodiment.
As shown in fig. 4, the user equipment 400 includes:
a memory 401 and a processor 402, a bus 403 connecting different components (including the memory 401 and the processor 402), wherein the memory 401 stores computer programs, and when the processor 402 executes the programs, the random access method of the embodiment of the present disclosure is implemented.
A program/utility 408 having a set (at least one) of program modules 407 may be stored, for example, in memory 401, such program modules 407 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. The program modules 407 generally perform the functions and/or means in the embodiments described in this disclosure.
The user device 400 may also communicate with one or more external devices 409 (e.g., keyboard, pointing device, display 410, etc.), with one or more devices that enable a user to interact with the user device 400, and/or with any devices (e.g., network card, modem, etc.) that enable the user device 400 to communicate with one or more other computing devices. Such communication may occur through input/output (I/O) interfaces 412. Also, user device 400 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via network adapter 413. As shown in fig. 4, network adapter 413 communicates with the other modules of user device 400 over bus 403. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with user device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processor 402 executes various functional applications and data processing by executing programs stored in the memory 401.
It should be noted that, for the implementation process and the technical principle of the user equipment in this embodiment, reference is made to the foregoing explanation of the random access apparatus in this embodiment of the disclosure, and details are not described here again.
The user equipment provided by the embodiment of the present disclosure may execute the random access method as described above, determine initial transmission power of the user equipment, obtain a target radio frequency parameter corresponding to the initial transmission power, where an adjacent channel leakage ratio under the target radio frequency parameter is greater than an adjacent channel leakage ratio under a standard radio frequency parameter, and control the user equipment to transmit a signal based on the target radio frequency parameter. Therefore, the method and the device control the user equipment to transmit signals by acquiring the target radio frequency parameter corresponding to the initial transmission power of the user equipment, and improve the linearity of the transmitted signals and the error rate because the leakage ratio of the adjacent channel under the target radio frequency parameter is greater than that under the standard radio frequency parameter, thereby improving the success rate and the speed of random access.
In order to implement the above embodiments, the present disclosure also proposes a computer-readable storage medium.
Wherein the instructions in the computer readable storage medium, when executed by a processor of a user equipment, enable the user equipment to perform the random access method as previously described. Alternatively, the computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. A random access method, comprising:
determining an initial transmission power of the user equipment;
acquiring a target radio frequency parameter corresponding to the initial transmitting power, wherein the adjacent channel leakage ratio under the target radio frequency parameter is greater than that under a standard radio frequency parameter;
controlling the user equipment to transmit signals based on the target radio frequency parameters;
the target radio frequency parameter satisfies at least one of the following conditions:
the target power amplifier bias voltage in the target radio frequency parameters is higher than the standard power amplifier bias voltage in the standard radio frequency parameters;
a target digital predistortion compression point in the target radio frequency parameters is lower than a standard digital predistortion compression point in the standard radio frequency parameters; and
the target power amplifier quiescent operating current in the target radio frequency parameters is determined based on the standard power amplifier quiescent operating current in the standard radio frequency parameters.
2. The random access method of claim 1, wherein the determining the initial transmit power of the user equipment comprises:
identifying a channel type of a signal transmitted by the user equipment;
determining the initial transmit power in response to the channel type being a physical random access channel.
3. The random access method of claim 1, wherein the determining the initial transmit power of the user equipment comprises:
acquiring candidate initial transmitting power;
identifying the smaller value of the candidate initial transmission power and the maximum power allowed to be transmitted by the user equipment and configured by the cell where the user equipment is located;
determining the smaller value as the initial transmission power.
4. The random access method of claim 3, wherein the obtaining the candidate initial transmission power comprises:
measuring the downlink path loss;
calculating the candidate initial transmit power based on the downlink path loss.
5. The random access method of claim 4, wherein the calculating the candidate initial transmit power based on the downlink path loss comprises:
and calculating the sum of the downlink path loss and the target power of the signal transmitted by the user equipment received by the base station to obtain the candidate initial transmission power.
6. The random access method of claim 1, further comprising:
acquiring the error rate of the signal transmitted by the user equipment;
responding to the error rate exceeding a preset error rate threshold value, and adjusting the initial transmitting power;
the step of obtaining the target radio frequency parameter corresponding to the initial transmitting power comprises:
and acquiring a target radio frequency parameter corresponding to the adjusted initial transmitting power.
7. A random access apparatus, comprising:
a determining module configured to perform determining an initial transmit power of a user equipment;
a first obtaining module configured to perform obtaining a target radio frequency parameter corresponding to the initial transmission power, wherein an adjacent channel leakage ratio under the target radio frequency parameter is greater than an adjacent channel leakage ratio under a standard radio frequency parameter;
a transmitting module configured to perform controlling the user equipment to transmit signals based on the target radio frequency parameters;
the target radio frequency parameter satisfies at least one of the following conditions:
the target power amplifier bias voltage in the target radio frequency parameters is higher than the standard power amplifier bias voltage in the standard radio frequency parameters;
a target digital predistortion compression point in the target radio frequency parameters is lower than a standard digital predistortion compression point in the standard radio frequency parameters; and
the target power amplifier quiescent operating current in the target radio frequency parameters is determined based on the standard power amplifier quiescent operating current in the standard radio frequency parameters.
8. The random access apparatus of claim 7, wherein the determining module is further configured to perform:
identifying a channel type of a signal transmitted by the user equipment;
determining the initial transmit power in response to the channel type being a physical random access channel.
9. The random access apparatus of claim 7, wherein the determining module is further configured to perform:
acquiring candidate initial transmitting power;
identifying the smaller value of the candidate initial transmission power and the maximum power allowed to be transmitted by the user equipment and configured by the cell where the user equipment is located;
determining the smaller value as the initial transmission power.
10. The random access apparatus according to claim 7, further comprising:
a second obtaining module configured to perform obtaining an error rate of a signal transmitted by the user equipment;
an adjusting module configured to perform adjusting the initial transmit power in response to the error rate exceeding a preset error rate threshold;
the second obtaining module is configured to perform obtaining of a target radio frequency parameter corresponding to the adjusted initial transmission power.
11. A user device, comprising:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to execute the instructions to implement the method of any one of claims 1-6.
12. A computer-readable storage medium, wherein instructions in the computer-readable storage medium, when executed by a processor of a user device, enable the user device to perform the method of any of claims 1-6.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108990140A (en) * | 2018-08-31 | 2018-12-11 | 北京小米移动软件有限公司 | Determine the method and electronic equipment of radio-frequency power |
| CN114143865A (en) * | 2020-09-04 | 2022-03-04 | 大唐移动通信设备有限公司 | Random access method, terminal and network side equipment |
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| CN101938773B (en) * | 2009-06-30 | 2014-11-05 | 中兴通讯股份有限公司 | Initial transmitting power acquisition method and base station |
| CN110720201B (en) * | 2018-02-14 | 2020-12-29 | Oppo广东移动通信有限公司 | Output power adjusting method and related product |
| CN108649907A (en) * | 2018-05-15 | 2018-10-12 | Oppo广东移动通信有限公司 | Radio-frequency power amplifier method for controlling power supply, device, terminal device and medium |
| US10637694B1 (en) * | 2018-12-21 | 2020-04-28 | At&T Intellectual Property I, L.P. | Reduction and/or mitigation of spatial emissions in multi-antenna wireless communication systems for advanced networks |
| CN111010726B (en) * | 2019-12-24 | 2023-04-18 | 上海闻泰信息技术有限公司 | Method, device, equipment and medium for determining radio frequency communication configuration parameters |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108990140A (en) * | 2018-08-31 | 2018-12-11 | 北京小米移动软件有限公司 | Determine the method and electronic equipment of radio-frequency power |
| CN114143865A (en) * | 2020-09-04 | 2022-03-04 | 大唐移动通信设备有限公司 | Random access method, terminal and network side equipment |
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