WO2019056385A1 - 随机接入方法及装置、用户设备和计算机可读存储介质 - Google Patents

随机接入方法及装置、用户设备和计算机可读存储介质 Download PDF

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Publication number
WO2019056385A1
WO2019056385A1 PCT/CN2017/103220 CN2017103220W WO2019056385A1 WO 2019056385 A1 WO2019056385 A1 WO 2019056385A1 CN 2017103220 W CN2017103220 W CN 2017103220W WO 2019056385 A1 WO2019056385 A1 WO 2019056385A1
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WIPO (PCT)
Prior art keywords
preamble
currently selected
pilot
selected beam
recorded
Prior art date
Application number
PCT/CN2017/103220
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English (en)
French (fr)
Inventor
江小威
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2017/103220 priority Critical patent/WO2019056385A1/zh
Priority to CN201780001605.4A priority patent/CN108353331B/zh
Priority to US16/649,152 priority patent/US11641674B2/en
Publication of WO2019056385A1 publication Critical patent/WO2019056385A1/zh
Priority to US18/193,633 priority patent/US20230247681A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • 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
    • 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
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a random access method and apparatus, a user equipment, and a computer readable storage medium.
  • a base station transmits a broadcast by covering a whole sector with a beam.
  • the base station can cover a sector by narrow beam scanning, that is, the base station transmits only a narrow beam in a certain direction at a certain moment, and then continuously changes the beam.
  • This type of scene is called a multi-beam scene.
  • the user equipment first correlates to the best downstream beam by measuring the downlink signal.
  • the UE For a UE with the ability to transmit and receive (Tx-Rx correspondence), the UE can determine the most suitable uplink beam by receiving the downlink beam.
  • the UE cannot determine its own uplink beam, which requires the UE to try to transmit by using different beams to determine the most suitable uplink beam.
  • the UE may reselect a beam to send the preamble.
  • the 3rd Generation Partnership Project discusses determining that when retransmitting a preamble, if the UE replaces the beam, the previous power is used to transmit the preamble, ie, no power boost is performed.
  • the power boost is performed only when the beam is not replaced twice in succession, and the boosted power is used to transmit the preamble.
  • the UE has three transmit (Tx) beams 1, 2, 3.
  • Tx transmit
  • the UE may choose to send the preamble through beam 2, and if it is still not received, send it through beam 3.
  • the preamble transmitted on beam 1, 2, 3 will use the same power.
  • the UE wants to send again through beam 1, but the power is increased.
  • the existing protocol when the UE switches from beam 3 to beam 1, the UE can only maintain the power unchanged, so that the UE cannot increase the power, and the base station cannot receive the preamble.
  • the present application discloses a random access method and apparatus, a user equipment, and a computer readable storage medium, so as to improve the transmission power when the UE performs beam switching, thereby improving the probability that the base station receives the preamble.
  • a random access method comprising:
  • the currently selected beam is the same as the recorded one beam, all the previously recorded beams are cleared, the currently selected beam is recorded, and the boosted pilot transmit power is used when it is determined that the value of the pilot power boost counter does not reach the maximum value. Send a preamble.
  • the method further includes:
  • the preamble is transmitted by using the previous pilot transmit power.
  • the method further includes:
  • the value of the pilot power boost counter is incremented by one.
  • the method further includes:
  • the currently selected beam is different from all the recorded beams, the currently selected beam is recorded, and the preamble is transmitted using the previous pilot transmission power.
  • the transmitting the preamble by using the boosted pilot transmit power includes:
  • the pilot transmit power is increased by one step value, and the preamble is transmitted with the increased pilot transmit power.
  • the recording the currently selected beam comprises:
  • the currently selected beam is recorded at the medium access control MAC layer or physical layer.
  • the method further includes:
  • the currently selected beam is recorded in the MAC layer, the currently selected beam information sent by the physical layer is received by the MAC layer;
  • the physical layer is sent to the MAC each time the preamble is sent.
  • the layer sends indication information, where the indication information is used to indicate whether the current transmission preamble needs to increase the pilot transmission power and whether the value of the pilot power boost counter needs to be accumulated by one.
  • a random access device comprising:
  • a determining module configured to determine whether the currently selected beam for transmitting the preamble sequence is the same as the at least one beam for transmitting the preamble
  • the processing sending module is configured to: if the determining module determines that the currently selected beam is the same as the recorded one beam, clear all previously recorded beams, record the currently selected beam, and determine the value of the pilot power boosting counter. When the maximum value is reached, the preamble is transmitted using the boosted pilot transmit power.
  • processing sending module is further configured to:
  • the preamble is transmitted by using the previous pilot transmit power.
  • processing sending module is further configured to:
  • the value of the pilot power boost counter is incremented by one.
  • the apparatus further includes:
  • the record sending module is configured to: if the determining module determines that the currently selected beam is different from all the recorded beams, record the currently selected beam, and send the preamble by using the previous pilot transmit power.
  • processing sending module is configured to:
  • the pilot transmit power is increased by one step value, and the preamble is transmitted with the increased pilot transmit power.
  • processing sending module or the recording sending module is configured to:
  • the currently selected beam is recorded at the medium access control MAC layer or physical layer.
  • the apparatus further includes:
  • a receiving module configured to receive, by the MAC layer, the currently selected beam information sent by the physical layer, if the processing sending module or the recording and sending module records the currently selected beam at the MAC layer;
  • the indication sending module is configured to: if the processing sending module or the recording and sending module records the currently selected beam at the physical layer, send the indication information to the MAC layer by using the physical layer every time the preamble is sent, The indication information is used to indicate whether the current transmit preamble needs to boost the pilot transmit power and whether the pilot power needs to be used. The value of the boost counter is incremented by one.
  • a user equipment including:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the currently selected beam is the same as the recorded one beam, all the previously recorded beams are cleared, the currently selected beam is recorded, and the boosted pilot transmit power is used when it is determined that the value of the pilot power boost counter does not reach the maximum value. Send a preamble.
  • a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the random access method described above.
  • the power transmission preamble enables the UE to increase the transmit power when performing beam switching, thereby improving the probability that the base station receives the preamble.
  • FIG. 1 is a flowchart of a random access method according to an exemplary embodiment of the present application.
  • FIG. 3 is a block diagram of a random access device according to an exemplary embodiment
  • FIG. 4 is a block diagram of another random access device according to an exemplary embodiment
  • FIG. 5 is a block diagram of another random access device according to an exemplary embodiment
  • FIG. 6 is a block diagram of a device suitable for random access, according to an exemplary embodiment.
  • FIG. 1 is a flowchart of a random access method according to an exemplary embodiment of the present application. The embodiment is described from the UE side. As shown in FIG. 1 , the random access method includes:
  • step S101 it is determined whether the currently selected beam for transmitting the preamble is the same as the recorded at least one beam for transmitting the preamble.
  • a beam may be selected to transmit the preamble, and the beam is recorded.
  • the UE may select another beam to send the preamble, and record the next.
  • the beam
  • the UE may determine whether the currently selected beam for transmitting the preamble is the same as the previously recorded at least one beam for transmitting the preamble.
  • step S102 if the currently selected beam is the same as the recorded one beam, all the previously recorded beams are cleared, the currently selected beam is recorded, and when the value of the pilot power boost counter is determined not to reach the maximum value, The pilot transmit power is sent to the preamble.
  • the pilot power up counter can set the medium access control (MAC) layer of the UE.
  • MAC medium access control
  • the currently selected beam of the UE is the same as the previously recorded one beam, all the previously recorded beams are cleared, and the currently selected beam is recorded, and if the value of the pilot power up-up counter does not reach the maximum value, The pilot transmit power is increased by one step value, and the preamble is transmitted with the increased pilot transmit power.
  • the previously recorded beams are beam 1, beam 2 and beam 3. Since the UE does not receive feedback from the base station on the preamble transmitted by the three beams, the UE needs to reselect the beam, assuming that the currently selected beam is beam 1, Because when The previously selected beam is the same as the previously recorded beam, then the previously recorded beam 1, beam 2 and beam 3 are cleared, and the currently selected beam, beam 1, is recorded, and if the value of the pilot power up counter does not reach the maximum value Then, the pilot transmit power can be increased by one step value, and the preamble is transmitted by using the increased pilot transmit power, thereby improving the probability that the base station receives the preamble.
  • the UE may record the currently selected beam at the MAC layer or the physical layer. If the currently selected beam is recorded at the MAC layer, the currently selected beam information transmitted by the physical (PHY) layer is received through the MAC layer, that is, the PHY layer needs to inform the MAC layer to transmit the beam used by the preamble each time. Because the MAC layer needs to maintain the value of the power boost counter and the pilot transmit power, if the currently selected beam is recorded in the physical layer, the physical layer needs to send indication information to the MAC layer each time the preamble is sent, the indication information It is used to indicate whether the current transmit preamble needs to increase the pilot transmit power and whether the value of the pilot power boost counter needs to be accumulated by one.
  • the indication information It is used to indicate whether the current transmit preamble needs to increase the pilot transmit power and whether the value of the pilot power boost counter needs to be accumulated by one.
  • the implementation is flexible and diverse by recording the currently selected beam at the MAC layer or the physical layer. If the currently selected beam is recorded in the MAC layer, the currently selected beam information sent by the physical layer is received by the MAC layer to implement the currently selected beam in the MAC record. If the currently selected beam is recorded in the physical layer, each time the preamble is sent, the physical layer sends a signal to the MAC layer to indicate whether the current preamble needs to be boosted, and whether the pilot power boost counter needs to be accumulated. An indication of information to enable recording of the currently selected beam at the physical layer.
  • the currently selected beam is the same as the recorded one beam, all the previously recorded beams are cleared, the currently selected beam is recorded, and when the value of the pilot power boost counter is determined not to reach the maximum value, the boosted The pilot transmit power is transmitted to the preamble, so that the UE can improve the transmit power when performing beam switching, thereby improving the probability that the base station receives the preamble.
  • FIG. 2 is a flowchart of another random access method according to an exemplary embodiment of the present application. The embodiment is described from the UE side. As shown in FIG. 2, the random access method includes:
  • step S201 it is determined whether the currently selected beam for transmitting the preamble sequence preamble is the same as the recorded at least one beam for transmitting the preamble.
  • step S202 if the currently selected beam is different from all the recorded beams, the currently selected beam is recorded, and the preamble is transmitted by using the previous pilot transmission power, and the operation ends.
  • step S203 if the currently selected beam is the same as the recorded one beam, all previously recorded beams are cleared, and the currently selected beam is recorded.
  • step S204 it is determined whether the value of the pilot power boost counter has reached a maximum value.
  • step S205 if the value of the pilot power boost counter reaches the maximum value, the preamble is transmitted using the previous pilot transmit power, and the operation ends.
  • step S206 if the value of the pilot power boost counter does not reach the maximum value, the value of the pilot power boost counter is incremented by one, the pilot transmit power is increased by one step value, and the increased pilot transmit power is used. Send a preamble.
  • the UE may also record the number of retransmissions of the preamble during the random access procedure, and if the number of retransmissions reaches the maximum number of retransmissions, the random access procedure is stopped.
  • the preamble when the currently selected beam is different from all the recorded beams, the preamble is transmitted by using the previous pilot transmit power, so as to improve the probability that the base station receives the preamble by switching the beam, and the currently selected beam and
  • the preamble is transmitted by using the previous pilot transmit power, so as to improve the probability that the base station receives the preamble by switching the beam, and the currently selected beam and record.
  • the preamble is transmitted by using the boosted pilot transmit power, that is, the UE can improve the transmit power when performing beam switching, thereby improving the probability that the base station receives the preamble.
  • FIG. 3 is a block diagram of a random access device according to an exemplary embodiment. As shown in FIG. 3, the random access device includes: a determining module 31 and a processing transmitting module 32.
  • the judging module 31 is configured to determine whether the currently selected beam for transmitting the preamble sequence preamble is identical to the recorded at least one beam for transmitting the preamble.
  • the UE may select another beam to send the preamble, and record the next.
  • the beam
  • the UE may determine whether the currently selected beam for transmitting the preamble is the same as the previously recorded at least one beam for transmitting the preamble.
  • the processing sending module 32 is configured to: if the determining module 31 determines that the currently selected beam is the same as the recorded one beam, clear all previously recorded beams, record the currently selected beam, and determine that the value of the pilot power boosting counter does not reach At the maximum value, the preamble is transmitted using the boosted pilot transmit power.
  • the pilot power up counter can set the medium access control (MAC) layer of the UE.
  • MAC medium access control
  • the currently selected beam of the UE is the same as the previously recorded one beam, all the previously recorded beams are cleared, and the currently selected beam is recorded, and if the value of the pilot power up-up counter does not reach the maximum value, The pilot transmit power is increased by one step value, and the preamble is transmitted with the increased pilot transmit power.
  • the previously recorded beams are beam 1, beam 2 and beam 3. Since the UE does not receive feedback from the base station on the preamble transmitted by the three beams, the UE needs to reselect the beam, assuming that the currently selected beam is beam 1, Since the currently selected beam is the same as the previously recorded one beam, the previously recorded beam 1, beam 2 and beam 3 are cleared, and the currently selected beam, beam 1, is recorded, and if the value of the pilot power up counter is not reached the maximum The value of the pilot transmit power can be increased by one step value, and the preamble is transmitted by using the increased pilot transmit power, thereby increasing the probability that the base station receives the preamble.
  • the currently selected beam is the same as the recorded one beam, all the previously recorded beams are cleared, the currently selected beam is recorded, and when the value of the pilot power boost counter is determined not to reach the maximum value, the boosted The pilot transmit power is transmitted to the preamble, so that the UE can improve the transmit power when performing beam switching, thereby improving the probability that the base station receives the preamble.
  • processing and transmitting module 32 may be further configured to: transmit the preamble with the previous pilot transmit power when determining that the value of the pilot power boost counter reaches a maximum value.
  • the preamble is transmitted by using the previous pilot transmit power, so as to improve the base station receiving the preamble by switching the beam. The probability.
  • processing and transmitting module 32 may be further configured to accumulate the value of the pilot power boosting counter by one when determining that the value of the pilot power boosting counter has not reached a maximum value.
  • the value of the pilot power boost counter is updated to accurately determine whether the value of the pilot power boost counter reaches a maximum value.
  • FIG. 4 is a block diagram of another random access device according to an exemplary embodiment. As shown in FIG. 4, on the basis of the foregoing embodiment shown in FIG. 3, the device may further include: a record sending module 33.
  • the record sending module 33 is configured to record the currently selected beam and determine the previously selected beam to transmit the preamble using the previous pilot transmit power if the determining module 31 determines that the currently selected beam is different from all of the recorded beams.
  • the preamble is transmitted by using the previous pilot transmit power when the currently selected beam is different from all the recorded beams, so as to improve the probability that the base station receives the preamble by switching the beam.
  • processing sending module 32 or the record sending module 33 may be configured to:
  • the currently selected beam is recorded at the medium access control MAC layer or physical layer.
  • the implementation manner is flexible and diverse by recording the currently selected beam at the MAC layer or the physical layer.
  • FIG. 5 is a block diagram of another random access device according to an exemplary embodiment. As shown in FIG. 5, on the basis of the foregoing embodiment shown in FIG. 4, the device may further include: a receiving module 34 and an indication. Send module 35.
  • the receiving module 34 is configured to receive the currently selected beam information transmitted by the physical layer through the MAC layer if the processing transmitting module 32 or the recording and transmitting module 33 records the currently selected beam at the MAC layer.
  • the indication sending module 35 is configured to: if the processing sending module 32 or the recording and transmitting module 33 records the currently selected beam at the physical layer, send an indication message to the MAC layer through the physical layer each time the preamble is sent, the indication information is used to indicate the current Whether to send the preamble needs to increase the pilot transmit power and whether it is necessary to accumulate the value of the pilot power boost counter.
  • the currently selected beam information sent by the physical layer is received by the MAC layer to implement the currently selected beam in the MAC record. If the currently selected beam is recorded in the physical layer, each time the preamble is sent, the physical layer sends a signal to the MAC layer to indicate whether the current preamble needs to be boosted, and whether the pilot power boost counter needs to be accumulated. An indication of information to enable recording of the currently selected beam at the physical layer.
  • FIG. 6 is a block diagram of a device suitable for random access, according to an exemplary embodiment.
  • device 600 can be a user device such as a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.
  • device 600 can include one or more of the following components: processing component 602, memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, And a communication component 616.
  • processing component 602 memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, And a communication component 616.
  • Processing component 602 typically controls the overall operation of device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • Processing component 602 can include one or more processors 620 to execute instructions to perform all or part of the steps described above.
  • processing component 602 can include one or more modules to facilitate interaction between component 602 and other components.
  • processing component 602 can include a multimedia module to facilitate interaction between multimedia component 608 and processing component 602.
  • One of the processors 620 in the processing component 602 can be configured to:
  • the currently selected beam is the same as the recorded one beam, all the previously recorded beams are cleared, the currently selected beam is recorded, and the boosted pilot transmit power is used when it is determined that the value of the pilot power boost counter does not reach the maximum value. Send a preamble.
  • Memory 604 is configured to store various types of data to support operation at device 600. Examples of such data include instructions for any application or method operating on device 600, contact data, phone book data, messages, pictures, videos, and the like.
  • the memory 604 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk or Optical Disk.
  • Power component 606 provides power to various components of device 600.
  • Power component 606 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for device 600.
  • the multimedia component 608 includes a screen between the device 600 and the user that provides an output interface.
  • the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can sense not only the boundaries of the touch or sliding action, but also the duration and pressure associated with the touch or slide operation.
  • the multimedia component 608 includes a front camera and/or a rear camera. When the device 600 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 610 is configured to output and/or input an audio signal.
  • audio component 610 includes a microphone (MIC) that is configured to receive an external audio signal when device 600 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode.
  • the received audio signal may be further stored in memory 604 or transmitted via communication component 616.
  • audio component 610 also includes a speaker for outputting an audio signal.
  • the I/O interface 612 provides an interface between the processing component 602 and the peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.
  • Sensor assembly 614 includes one or more sensors for providing device 600 with a status assessment of various aspects.
  • sensor component 614 can detect an open/closed state of device 600, a relative positioning of components, such as a display and a keypad of device 600, and sensor component 614 can also detect a change in position of one component of device 600 or device 600, user The presence or absence of contact with device 600, device 600 orientation or acceleration/deceleration and temperature variation of device 600.
  • Sensor assembly 614 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • Sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 614 can also include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 616 is configured to facilitate wired or wireless communication between device 600 and other devices.
  • the device 600 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • communication component 616 receives broadcast signals or broadcast associated information from an external broadcast management system via a broadcast channel.
  • communication component 616 also includes a near field communication (NFC) module to facilitate short range communication.
  • NFC near field communication
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • device 600 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic component implementation for performing the above methods.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic component implementation for performing the above methods.
  • non-transitory computer readable storage medium comprising instructions, such as a memory 604 comprising instructions executable by processor 620 of apparatus 600 to perform the above method.
  • the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.
  • the device embodiment since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment.
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

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Abstract

本公开是关于一种随机接入方法及装置、用户设备和计算机可读存储介质。其中，随机接入方法包括：判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同；若当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。本公开实施例，实现了UE进行beam切换时可以提升发射功率，从而提高基站接收到preamble的概率。

Description

随机接入方法及装置、用户设备和计算机可读存储介质 技术领域
本公开涉及通信技术领域，尤其涉及一种随机接入方法及装置、用户设备和计算机可读存储介质。
背景技术
在长期演进(Long Term Evolution，简称为LTE)系统中，基站发送广播是通过一个波束(beam)来覆盖整个扇区。在新空口(New Radio，NR)中，基站可以采用较窄波束扫描的方式来覆盖一个扇区，也即基站在某一时刻只向某一个方向发送一个窄波束，然后通过不断地改变beam的方向，来达到覆盖一个扇区。这种场景被称作多波束(Multi-beam)场景。
在Multi-beam场景下，用户设备(UE)首先通过测量下行信号来关联到一个最好的下行beam。对于具备发送接收一致性(Tx-Rx correspondence)能力的UE来说，UE可以通过接收下行beam来确定最合适的上行beam。但对于不具备发送接收一致性的UE来说，UE无法确定自己的上行beam，这就需要UE通过在不同的beam来尝试发送以便确定最合适的上行beam。
对于一次随机接入而言，当UE在某个beam上发送某个前导序列(preamble)后，若未能成功接收到基站对该preamble的反馈，则UE可以重新选择一个beam来发送preamble。
目前，对于单preamble发送场景，第三代合作伙伴计划(3GPP)讨论确定在重传preamble时，如果UE更换beam，则采用上次的功率来发送preamble，即不进行功率提升。只有连续两次重传没有更换beam时才进行功率提升，并使用提升后的功率来发送preamble。
但是，这样做会存在以下问题：假设UE有三个发送(Tx)beam 1，2，3。在UE进行随机接入尝试时，当UE在beam 1上发送preamble没有收到基站反馈时，UE可以选择通过beam 2来发送preamble，如果仍然没有收到，再通过beam 3来发送。根据现有的3GPP协议(agreement)，在beam 1，2，3上发送的preamble将采用相同的功率。此时，因为所有beam上发送preamble均未收到反馈，UE则希望再次通过beam 1来发送，但是功率提升一些。可是，按照现有协议，当UE从beam 3切换beam 1上时，UE仍然只能维持功率不变，导致UE无法提升功率，从而导致基站无法接收到preamble。
发明内容
有鉴于此，本申请公开了一种随机接入方法及装置、用户设备和计算机可读存储介质，以实现UE进行beam切换时可以提升发射功率，从而提高基站接收到preamble的概率。
根据本公开实施例的第一方面，提供一种随机接入方法，所述方法包括：
判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同；
若当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
在一实施例中，所述方法还包括：
在确定所述导频功率提升计数器的数值达到最大值时，采用前一次的导频发射功率发送所述preamble。
在一实施例中，所述方法还包括：
在所述确定导频功率提升计数器的数值未达到最大值时，将所述导频功率提升计数器的数值累加一。
在一实施例中，所述方法还包括：
若当前选择的波束与记录的所有波束均不相同，则记录当前选择的波束，并采用前一次的导频发射功率发送所述preamble。
在一实施例中，所述采用提升后的导频发射功率发送preamble，包括：
将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble。
在一实施例中，所述记录当前选择的波束，包括：
在媒体接入控制MAC层或物理层记录当前选择的波束。
在一实施例中，所述方法还包括：
若在MAC层记录当前选择的波束，则通过所述MAC层接收物理层发送的当前选择的波束信息；
若在物理层记录当前选择的波束，则在每次发送preamble时，通过所述物理层向MAC 层发送指示信息，所述指示信息用于指示当前发送preamble是否需要提升导频发射功率以及是否需要将所述导频功率提升计数器的数值累加一。
根据本公开实施例的第二方面，提供一种随机接入装置，所述装置包括：
判断模块，被配置为判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同；
处理发送模块，被配置为若所述判断模块判断出当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
在一实施例中，所述处理发送模块，还被配置为：
在确定所述导频功率提升计数器的数值达到最大值时，采用前一次的导频发射功率发送所述preamble。
在一实施例中，所述处理发送模块，还被配置为：
在所述确定导频功率提升计数器的数值未达到最大值时，将所述导频功率提升计数器的数值累加一。
在一实施例中，所述装置还包括：
记录发送模块，被配置为若所述判断模块判断出当前选择的波束与记录的所有波束均不相同，则记录当前选择的波束，并采用前一次的导频发射功率发送所述preamble。
在一实施例中，所述处理发送模块，被配置为：
将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble。
在一实施例中，所述处理发送模块或者所述记录发送模块，被配置为：
在媒体接入控制MAC层或物理层记录当前选择的波束。
在一实施例中，所述装置还包括：
接收模块，被配置为若所述处理发送模块或者所述记录发送模块在MAC层记录当前选择的波束，则通过所述MAC层接收物理层发送的当前选择的波束信息；
指示发送模块，被配置为若所述处理发送模块或者所述记录发送模块在物理层记录当前选择的波束，则在每次发送preamble时，通过所述物理层向MAC层发送指示信息，所述指示信息用于指示当前发送preamble是否需要提升导频发射功率以及是否需要将所述导频功率 提升计数器的数值累加一。
根据本公开实施例的第三方面，提供一种用户设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同；
若当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
根据本公开实施例的第四方面，提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述随机接入方法的步骤。
本公开的实施例提供的技术方案可以包括以下有益效果：
通过在当前选择的波束与记录的一个波束相同时，清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble，实现了UE进行beam切换时可以提升发射功率，从而提高基站接收到preamble的概率。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1是本申请一示例性实施例示出的一种随机接入方法的流程图；
图2是本申请一示例性实施例示出的另一种随机接入方法的流程图；
图3是根据一示例性实施例示出的一种随机接入装置的框图；
图4是根据一示例性实施例示出的另一种随机接入装置的框图；
图5是根据一示例性实施例示出的另一种随机接入装置的框图；
图6是根据一示例性实施例示出的一种适用于随机接入装置的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
图1是本申请一示例性实施例示出的一种随机接入方法的流程图，该实施例从UE侧进行描述，如图1所示，该随机接入方法包括：
在步骤S101中，判断当前选择的用于发送preamble的波束与记录的至少一个用于发送preamble的波束是否相同。
在该实施例中，UE因为初始接入、上行失去同步、重建等原因需要发起一次随机接入时，可以选择一个beam来发送preamble，并记录下该beam。
当UE因为没有收到基站对该preamble的反馈或者争用解决失败需要再次发送preamble时，或者因为多preamble传输场景下需要多次发送preamble时，UE可以选择另一个beam来发送preamble，并记录下该beam。
UE在选择好用于发送preamble的波束之后，可以判断当前选择的用于发送preamble的波束与之前记录的至少一个用于发送preamble的波束是否相同。
在步骤S102中，若当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
其中，导频功率抬升计数器可以设置UE的媒体接入控制(MAC)层。
在该实施例中，若UE当前选择的波束与之前记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，同时若导频功率抬升计数器的数值若未达到最大值，则将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble。
假设，之前记录的波束为波束1、波束2和波束3，由于UE未收到基站对这三个波束发送的preamble的反馈，因此，UE需要重新选择波束，假设当前选择的波束为波束1，由于当 前选择的波束与之前记录的一个波束相同，则清除之前记录的波束1、波束2和波束3，并记录当前选择的波束即波束1，同时若导频功率抬升计数器的数值若未达到最大值，则可以将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble，从而提高基站接收到preamble的概率。
另外，UE可以在MAC层或物理层记录当前选择的波束。如果在MAC层记录当前选择的波束，则通过MAC层接收物理(PHY)层发送的当前选择的波束信息，即PHY层需要告知MAC层每次发送preamble所用的beam。因为MAC层需要负责维护功率提升计数器的数值及导频发射功率，因此，如果在物理层记录当前选择的波束，则在每次发送preamble时，物理层需要向MAC层发送指示信息，该指示信息用于指示当前发送preamble是否需要提升导频发射功率以及是否需要将导频功率提升计数器的数值累加一。
在该实施例中，通过在MAC层或物理层记录当前选择的波束，实现方式灵活多样。若在MAC层记录当前选择的波束，则通过MAC层接收物理层发送的当前选择的波束信息，以实现在MAC记录当前选择的波束。若在物理层记录当前选择的波束，则在每次发送preamble时，通过物理层向MAC层发送用于指示当前发送preamble是否需要提升导频发射功率以及是否需要将导频功率提升计数器的数值累加一的指示信息，以实现在物理层记录当前选择的波束。
上述实施例，通过在当前选择的波束与记录的一个波束相同时，清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble，实现了UE进行beam切换时可以提升发射功率，从而提高基站接收到preamble的概率。
图2是本申请一示例性实施例示出的另一种随机接入方法的流程图，该实施例从UE侧进行描述，如图2所示，该随机接入方法包括：
在步骤S201中，判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同。
在步骤S202中，若当前选择的波束与记录的所有波束均不相同，则记录当前选择的波束，并采用前一次的导频发射功率发送preamble，操作结束。
在步骤S203中，若当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束。
在步骤S204中，判断导频功率提升计数器的数值是否达到最大值。
在步骤S205中，若导频功率提升计数器的数值达到最大值，则采用前一次的导频发射功率发送preamble，操作结束。
在步骤S206中，若导频功率提升计数器的数值未达到最大值，则将导频功率提升计数器的数值累加一，将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble。
在该实施例中，若UE接收到基站对preamble的反馈，进而完成随机接入过程，则停止随机接入，否则，继续转向执行上述步骤S201。另外，UE在随机接入过程中也可以记录preamble的重传次数，若该重传次数达到最大重传次数，则停止此次随机接入过程。
上述实施例，通过在当前选择的波束与记录的所有波束均不同时，采用前一次的导频发射功率发送preamble，以实现通过切换波束来提高基站接收到preamble的概率，在当前选择的波束与记录的一个波束相同且导频功率提升计数器的数值达到最大值时，采用前一次的导频发射功率发送preamble，以实现通过切换波束来提高基站接收到preamble的概率，在当前选择的波束与记录的一个波束相同且导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble，即实现了UE进行beam切换时可以提升发射功率，从而提高基站接收到preamble的概率。
图3是根据一示例性实施例示出的一种随机接入装置的框图，如图3所示，该随机接入装置包括：判断模块31和处理发送模块32。
判断模块31被配置为判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同。
当UE因为没有收到基站对该preamble的反馈或者争用解决失败需要再次发送preamble时，或者因为多preamble传输场景下需要多次发送preamble时，UE可以选择另一个beam来发送preamble，并记录下该beam。
UE在选择好用于发送preamble的波束之后，可以判断当前选择的用于发送preamble的波束与之前记录的至少一个用于发送preamble的波束是否相同。
处理发送模块32被配置为若判断模块31判断出当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
其中，导频功率抬升计数器可以设置UE的媒体接入控制(MAC)层。
在该实施例中，若UE当前选择的波束与之前记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，同时若导频功率抬升计数器的数值若未达到最大值，则将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble。
假设，之前记录的波束为波束1、波束2和波束3，由于UE未收到基站对这三个波束发送的preamble的反馈，因此，UE需要重新选择波束，假设当前选择的波束为波束1，由于当前选择的波束与之前记录的一个波束相同，则清除之前记录的波束1、波束2和波束3，并记录当前选择的波束即波束1，同时若导频功率抬升计数器的数值若未达到最大值，则可以将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble，从而提高基站接收到preamble的概率。
上述实施例，通过在当前选择的波束与记录的一个波束相同时，清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble，实现了UE进行beam切换时可以提升发射功率，从而提高基站接收到preamble的概率。
在一实施例中，处理发送模块32还可以被配置为：在确定导频功率提升计数器的数值达到最大值时，采用前一次的导频发射功率发送preamble。
上述实施例，在当前选择的波束与记录的一个波束相同且导频功率提升计数器的数值达到最大值时，采用前一次的导频发射功率发送preamble，以实现通过切换波束来提高基站接收到preamble的概率。
在另一实施例中，处理发送模块32还可以被配置为：在确定导频功率提升计数器的数值未达到最大值时，将导频功率提升计数器的数值累加一。
上述实施例，通过更新导频功率提升计数器的数值，以准确判断导频功率提升计数器的数值是否达到最大值。
图4是根据一示例性实施例示出的另一种随机接入装置的框图，如图4所示，在上述图3所示实施例的基础上，该装置还可以包括：记录发送模块33。
记录发送模块33被配置为若判断模块31判断出当前选择的波束与记录的所有波束均不相同，则记录当前选择的波束，并采用前一次的导频发射功率发送preamble。
上述实施例，通过在当前选择的波束与记录的所有波束均不同时，采用前一次的导频发射功率发送preamble，以实现通过切换波束来提高基站接收到preamble的概率。
在一实施例中，处理发送模块32或者记录发送模块33，可以被配置为：
在媒体接入控制MAC层或物理层记录当前选择的波束。
上述实施例，通过在MAC层或物理层记录当前选择的波束，实现方式灵活多样。
图5是根据一示例性实施例示出的另一种随机接入装置的框图，如图5所示，在上述图4所示实施例的基础上，该装置还可以包括：接收模块34和指示发送模块35。
接收模块34被配置为若处理发送模块32或者记录发送模块33在MAC层记录当前选择的波束，则通过MAC层接收物理层发送的当前选择的波束信息。
指示发送模块35被配置为若处理发送模块32或者记录发送模块33在物理层记录当前选择的波束，则在每次发送preamble时，通过物理层向MAC层发送指示信息，指示信息用于指示当前发送preamble是否需要提升导频发射功率以及是否需要将导频功率提升计数器的数值累加一。
上述实施例，若在MAC层记录当前选择的波束，则通过MAC层接收物理层发送的当前选择的波束信息，以实现在MAC记录当前选择的波束。若在物理层记录当前选择的波束，则在每次发送preamble时，通过物理层向MAC层发送用于指示当前发送preamble是否需要提升导频发射功率以及是否需要将导频功率提升计数器的数值累加一的指示信息，以实现在物理层记录当前选择的波束。
图6是根据一示例性实施例示出的一种适用于随机接入装置的框图。例如，装置600可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等用户设备。
参照图6，装置600可以包括以下一个或多个组件：处理组件602，存储器604，电源组件606，多媒体组件608，音频组件610，输入/输出(I/O)的接口612，传感器组件614，以及通信组件616。
处理组件602通常控制装置600的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理元件602可以包括一个或多个处理器620来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件602可以包括一个或多个模块，便于处理组件602和其他组件之间的交互。例如，处理部件602可以包括多媒体模块，以方便多媒体组件608和处理组件602之间的交互。
处理组件602中的其中一个处理器620可以被配置为：
判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同；
若当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
存储器604被配置为存储各种类型的数据以支持在设备600的操作。这些数据的示例包括用于在装置600上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器604可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件606为装置600的各种组件提供电力。电源组件606可以包括电源管理系统，一个或多个电源，及其他与为装置600生成、管理和分配电力相关联的组件。
多媒体组件608包括在装置600和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件608包括一个前置摄像头和/或后置摄像头。当设备600处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件610被配置为输出和/或输入音频信号。例如，音频组件610包括一个麦克风(MIC)，当装置600处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器604或经由通信组件616发送。在一些实施例中，音频组件610还包括一个扬声器，用于输出音频信号。
I/O接口612为处理组件602和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件614包括一个或多个传感器，用于为装置600提供各个方面的状态评估。 例如，传感器组件614可以检测到设备600的打开/关闭状态，组件的相对定位，例如组件为装置600的显示器和小键盘，传感器组件614还可以检测装置600或装置600一个组件的位置改变，用户与装置600接触的存在或不存在，装置600方位或加速/减速和装置600的温度变化。传感器组件614可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件614还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件614还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件616被配置为便于装置600和其他设备之间有线或无线方式的通信。装置600可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信部件616经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，通信部件616还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置600可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器604，上述指令可由装置600的处理器620执行以完成上述方法。例如，非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括 没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
本领域技术人员在考虑说明书及实践这里公开的公开后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (16)

  1. 一种随机接入方法，其特征在于，所述方法包括：
    判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同；
    若当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    在确定所述导频功率提升计数器的数值达到最大值时，采用前一次的导频发射功率发送所述preamble。
  3. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    在所述确定导频功率提升计数器的数值未达到最大值时，将所述导频功率提升计数器的数值累加一。
  4. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    若当前选择的波束与记录的所有波束均不相同，则记录当前选择的波束，并采用前一次的导频发射功率发送所述preamble。
  5. 根据权利要求1所述的方法，其特征在于，所述采用提升后的导频发射功率发送preamble，包括：
    将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述记录当前选择的波束，包括：
    在媒体接入控制MAC层或物理层记录当前选择的波束。
  7. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    若在MAC层记录当前选择的波束，则通过所述MAC层接收物理层发送的当前选择的波束信息；
    若在物理层记录当前选择的波束，则在每次发送preamble时，通过所述物理层向MAC层发送指示信息，所述指示信息用于指示当前发送preamble是否需要提升导频发射功率以及是否需要将所述导频功率提升计数器的数值累加一。
  8. 一种随机接入装置，其特征在于，所述装置包括：
    判断模块，被配置为判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同；
    处理发送模块，被配置为若所述判断模块判断出当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
  9. 根据权利要求8所述的装置，其特征在于，所述处理发送模块，还被配置为：
    在确定所述导频功率提升计数器的数值达到最大值时，采用前一次的导频发射功率发送所述preamble。
  10. 根据权利要求8所述的装置，其特征在于，所述处理发送模块，还被配置为：
    在所述确定导频功率提升计数器的数值未达到最大值时，将所述导频功率提升计数器的数值累加一。
  11. 根据权利要求8所述的装置，其特征在于，所述装置还包括：
    记录发送模块，被配置为若所述判断模块判断出当前选择的波束与记录的所有波束均不相同，则记录当前选择的波束，并采用前一次的导频发射功率发送所述preamble。
  12. 根据权利要求8所述的装置，其特征在于，所述处理发送模块，被配置为：
    将导频发射功率增加一个步长值，并采用增加后的导频发射功率发送preamble。
  13. 根据权利要求8-12任一项所述的装置，其特征在于，所述处理发送模块或者所述记录发送模块，被配置为：
    在媒体接入控制MAC层或物理层记录当前选择的波束。
  14. 根据权利要求13所述的装置，其特征在于，所述装置还包括：
    接收模块，被配置为若所述处理发送模块或者所述记录发送模块在MAC层记录当前选择的波束，则通过所述MAC层接收物理层发送的当前选择的波束信息；
    指示发送模块，被配置为若所述处理发送模块或者所述记录发送模块在物理层记录当前选择的波束，则在每次发送preamble时，通过所述物理层向MAC层发送指示信息，所述指示信息用于指示当前发送preamble是否需要提升导频发射功率以及是否需要将所述导频功率提升计数器的数值累加一。
  15. 一种用户设备，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    判断当前选择的用于发送前导序列preamble的波束与记录的至少一个用于发送preamble的波束是否相同；
    若当前选择的波束与记录的一个波束相同，则清除之前记录的所有波束，记录当前选择的波束，并在确定导频功率提升计数器的数值未达到最大值时，采用提升后的导频发射功率发送preamble。
  16. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现权利要求1所述的随机接入方法的步骤。
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