WO2018227500A1 - Procédé pour déterminer un nombre d'occurrences de transmission de préambule d'accès aléatoire, dispositif de réseau et dispositif terminal - Google Patents

Procédé pour déterminer un nombre d'occurrences de transmission de préambule d'accès aléatoire, dispositif de réseau et dispositif terminal Download PDF

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Publication number
WO2018227500A1
WO2018227500A1 PCT/CN2017/088514 CN2017088514W WO2018227500A1 WO 2018227500 A1 WO2018227500 A1 WO 2018227500A1 CN 2017088514 W CN2017088514 W CN 2017088514W WO 2018227500 A1 WO2018227500 A1 WO 2018227500A1
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WIPO (PCT)
Prior art keywords
terminal device
maximum number
preamble
coefficient
preamble transmission
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PCT/CN2017/088514
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English (en)
Chinese (zh)
Inventor
张治�
Original Assignee
Oppo广东移动通信有限公司
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.)
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201780050388.8A priority Critical patent/CN109644507B/zh
Priority to PCT/CN2017/088514 priority patent/WO2018227500A1/fr
Publication of WO2018227500A1 publication Critical patent/WO2018227500A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application relates to the field of communications, and in particular, to a method, a network device, and a terminal device for determining a random access preamble transmission number.
  • UE User equipment
  • CSI Channel State Information
  • RS Channel State Information
  • a preferred downlink transmission beam (DL Tx Beam) when the UE performs random access, needs to inform the network device of its selected DL Tx Beam.
  • different DL Tx Beams may indicate different physical random access channel (PRACH) resources for the random access procedure. And sequences, that is, grouping PRACH resources and/or sequences, and different groups correspond to different DL Tx Beams. If the UE selects the best DL Tx beam according to the measurement result of some signals in the synchronous signal block (SS block), select a PRACH preamble for transmission from the corresponding group, and the network device The best DL Tx Beam selected by the UE can be determined according to the time-frequency resources and/or sequences of the received PRACH preamble.
  • PRACH physical random access channel
  • the UE When the UE does not receive a valid corresponding Random Access Response (RAR) sent by the network device in the corresponding time window, for example, the network device does not receive the preamble, or the network device sends the RAR, and the terminal device If not received, the UE reselects a preamble according to a preset rule to perform transmission again until a valid corresponding RAR is received, or the maximum number of transmissions specified by the system is reached. When the corresponding RAR is not successfully received when the maximum number of transmissions is reached, the UE notifies the upper layer.
  • RAR Random Access Response
  • the present application provides a method, a network device, and a terminal device for determining the number of random access preamble transmissions, which can reduce the access delay and reduce the interference that may be caused.
  • a first aspect provides a method for determining a number of random access preamble transmissions, the method comprising: determining, by a network device, preamble transmission parameter information, where the preamble transmission parameter information is used by each of the plurality of terminal devices to determine a corresponding The maximum number of preamble transmissions, the maximum number of preamble transmissions corresponding to each terminal device is the maximum number of times that each terminal device can send a random access preamble, and the preamble transmission parameter information includes a first parameter, and the preamble corresponding to each terminal device The maximum number of transmissions is greater than or equal to the first parameter; the network device sends the preamble transmission parameter information to the plurality of terminal devices.
  • the method for determining the number of random access preamble transmissions in the embodiment of the present application determines the preamble transmission parameter information sent by the network device to the plurality of terminal devices by the method for determining the number of random access preamble transmissions, so that different terminal devices can be based on the preamble
  • the transmission parameter information and the related information of the terminal device can flexibly determine the maximum number of preamble transmissions, thereby reducing the random access delay of some terminal devices, and also reducing interference caused by preamble retransmission between some terminal devices.
  • the multiple terminal devices include a first terminal device and a second terminal device, and the first terminal transmission corresponding to the first terminal device has a maximum number of times and the second terminal The maximum number of second preamble transmissions corresponding to the device is different.
  • the multiple terminal devices may be classified into different categories according to different conditions, for example, according to whether the beam correspondence is classified, the first terminal device may be a terminal device whose beam correspondence is not established, and the second terminal device may be a beam corresponding device.
  • a terminal device is formed, wherein the correspondence of the beam correspondence may be that the correspondence between the transmit beam and the receive beam of the first terminal device is established.
  • the first terminal device is used to process the first type of service
  • the second site device is used to process the second type of service
  • the first type of service is different from the second type of service.
  • the first terminal device may determine the first parameter as the maximum number of times of the first preamble transmission.
  • the first terminal device may be a terminal device whose beam correspondence is established, and the first terminal device directly selects the first parameter as the maximum number of times of the first preamble transmission according to the preamble transmission parameter information.
  • the first transmission coefficient parameter includes a first coefficient The product of the first coefficient and the first parameter.
  • the first terminal device may determine the maximum number of first preamble transmissions as the product of the first coefficient and the first parameter.
  • the first terminal device may also consider the first coefficient as an upper limit, that is, the first terminal device may determine a second coefficient, where the second coefficient satisfies greater than 1 and is smaller than the first coefficient, and then the second coefficient is The product of the first parameter is determined as the maximum number of first preamble transmissions.
  • the preamble transmission parameter information includes a second parameter, where the maximum number of times of the first preamble transmission is less than or equal to the second parameter.
  • the first terminal device may determine the second parameter as the maximum number of times of the first preamble transmission.
  • the first terminal device may determine the maximum number of times of the first preamble transmission to be greater than any value that the first parameter is smaller than the second parameter.
  • the preamble transmission parameter information includes a second coefficient, where the second coefficient is greater than 1, and the first preamble transmission maximum number is less than or equal to the The product of the second coefficient and the second parameter.
  • the second preamble transmission maximum number of times is equal to the first parameter.
  • the first terminal device may determine the maximum number of first preamble transmissions as the product of the second coefficient and the second parameter.
  • the first terminal device may also consider the second coefficient as an upper limit, that is, the first terminal device may determine a third coefficient, where the third coefficient satisfies greater than 1 and is smaller than the second coefficient, and then the third coefficient is The product of the second parameter is determined as the maximum number of first preamble transmissions.
  • the correspondence of the beam of the first terminal device is not established, and the correspondence of the beam of the second terminal device is established.
  • the method for determining the number of random access preamble transmissions in the embodiment of the present application determines the preamble transmission parameter information sent by the network device to the plurality of terminal devices by the method for determining the number of random access preamble transmissions, so that different terminal devices can be based on the preamble Transmitting parameter information and related information of the terminal device, and flexibly determining the maximum number of preamble transmissions, thereby reducing random connection of some terminal devices
  • the delay is also able to reduce the interference caused by preamble retransmission between some terminal devices.
  • a second aspect provides a method for determining a number of random access preamble transmissions, where the method includes: receiving, by a terminal device, preamble transmission parameter information sent by a network device; and determining, by the terminal device, a maximum number of preamble transmissions according to the preamble transmission parameter information, The maximum number of preamble transmissions is the maximum number of times the terminal device can transmit a random access preamble.
  • the terminal device receives the preamble transmission parameter that the network device sends to the multiple terminal devices, and the terminal device may be flexible according to the preamble transmission parameter information and related information of the terminal device.
  • the maximum number of preamble transmissions is determined, so that different terminal devices can determine different maximum number of preamble transmissions, thereby reducing the random access delay of some terminal devices, and also reducing interference caused by preamble retransmission between some terminal devices.
  • the preamble transmission parameter information includes a first parameter, and the maximum number of preamble transmissions is greater than or equal to the first parameter.
  • the method before the terminal device determines the maximum number of the preamble transmission, the method further includes: determining, by the terminal device, the first coefficient, the preamble transmission The maximum number of times is less than or equal to the product of the first coefficient and the first parameter, the first coefficient being greater than one.
  • the preamble transmission parameter information includes the first coefficient.
  • the determining, by the terminal device, the first coefficient includes: determining, by the terminal device, the first coefficient according to the type and/or the configuration information.
  • the preamble transmission parameter information includes a second parameter, where the maximum number of preamble transmissions is greater than the first parameter, and the maximum number of preamble transmissions is less than or Equal to the second parameter.
  • the method before the terminal device determines the maximum number of the preamble transmission, the method further includes: determining, by the terminal device, the second coefficient, the preamble transmission The maximum number of times is less than or equal to the product of the second coefficient and the second parameter, the second coefficient being greater than one.
  • the preamble transmission parameter information includes a second coefficient.
  • the determining, by the terminal device, the second coefficient comprises: determining, by the terminal device, the second coefficient according to the type and/or the configuration information.
  • the configuration information includes: at least one of a beam-related configuration of the terminal device and an antenna-related configuration of the terminal device.
  • the correspondence of the beam of the terminal device is not established.
  • the terminal device receives the preamble transmission parameter that the network device sends to the multiple terminal devices, and the terminal device may be flexible according to the preamble transmission parameter information and related information of the terminal device.
  • the maximum number of preamble transmissions is determined, so that different terminal devices can determine different maximum number of preamble transmissions, thereby reducing the random access delay of some terminal devices, and also reducing interference caused by preamble retransmission between some terminal devices.
  • a network device for performing the method of any of the first aspect or the first aspect of the first aspect.
  • the network device comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • a terminal device for performing the method in any of the above-mentioned second aspect or any possible implementation of the second aspect.
  • the terminal device comprises means for performing the method of any of the above-described second or second aspects of the second aspect.
  • a network device comprising: a storage unit and a processor, the storage unit is configured to store an instruction, the processor is configured to execute an instruction stored by the memory, and when the processor executes the instruction stored by the memory The execution causes the processor to perform the method of the first aspect or any possible implementation of the first aspect.
  • a terminal device comprising: a storage unit and a processor, the storage unit is configured to store an instruction, the processor is configured to execute an instruction stored by the memory, and when the processor executes the instruction stored by the memory The execution causes the processor to perform the method of the second aspect or any possible implementation of the second aspect.
  • a seventh aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a computer readable medium for storing a computer program comprising instructions for performing the method of the second aspect or any of the possible implementations of the second aspect.
  • a computer program product comprising instructions for performing the determination in any of the above first aspect or any of the possible implementations of the first aspect when the computer runs the finger of the computer program product A method of randomly accessing the number of preamble transmissions.
  • the computer program product can be run on the network device of the third aspect above.
  • a computer program product comprising instructions for performing the determination in any of the possible implementations of the second aspect or the second aspect described above when the computer runs the finger of the computer program product A method of randomly accessing the number of preamble transmissions.
  • the computer program product can be run on the terminal device of the above fourth aspect.
  • FIG. 1 is a schematic flowchart of a method for determining a random access preamble transmission number according to an embodiment of the present application.
  • FIG. 2 is another schematic flowchart of a method for determining a random access preamble transmission number according to an embodiment of the present application.
  • FIG. 3 is a schematic block diagram of a network device according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 5 is another schematic block diagram of a network device according to an embodiment of the present application.
  • FIG. 6 is another schematic block diagram of a terminal device according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunications System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the terminal device may include, but is not limited to, a mobile station (MS), a mobile terminal, a mobile phone, a UE, a handset, and a portable device. , a vehicle, etc., the terminal device can communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal device can be a mobile phone (or "cellular" phone) The computer with wireless communication function, etc., the terminal device can also be a mobile device that is portable, pocket-sized, handheld, built-in or on-board.
  • RAN Radio Access Network
  • the terminal device can also be a mobile device that is portable, pocket-sized, handheld, built-in or on-board.
  • the network device involved in the embodiment of the present application is a device deployed in a radio access network to provide a wireless communication function for a terminal device.
  • the network device may be a base station, and the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the names of devices with base station functionality may vary.
  • an Evolved NodeB eNB or eNodeB
  • 3G 3rd Generation
  • FIG. 1 shows a schematic flowchart of a method 100 for determining the number of random access preamble transmissions according to an embodiment of the present application, which may be performed by a network device. As shown in FIG. 1, the method 100 includes:
  • the network device determines the preamble transmission parameter information, where the preamble transmission parameter information is used by each of the plurality of terminal devices to determine a maximum number of preamble transmissions, and the maximum number of preamble transmissions corresponding to each terminal device is each The maximum number of times that the terminal device can send the random access preamble, where the preamble transmission parameter information includes the first parameter, and the maximum number of preamble transmissions corresponding to each terminal device is greater than or equal to the first parameter;
  • the network device sends the preamble transmission parameter information to the multiple terminal devices.
  • the method for determining the number of random access preamble transmissions in the embodiment of the present application the preamble transmission parameter information sent by the network device to the plurality of terminal devices, so that different terminal devices can determine the maximum number of different preamble transmissions, thereby reducing the number of The random access delay of the terminal device can also reduce interference caused by preamble retransmission between some terminal devices.
  • the terminal device sends a random access preamble to the network device, and after the network device successfully receives, returns the RAR to the terminal device. If the terminal device does not receive a valid RAR within the corresponding time window, for example, does not receive the RAR, or the received RAR If the identifiers do not match, the terminal device may resend the random access preamble to the network device, and the number of times the terminal device sends the random access preamble is increased once. When the terminal device transmits the random access preamble to the maximum number of transmissions and still does not receive the corresponding valid RAR, the upper layer is notified.
  • the network device may send the preamble transmission parameter information to the plurality of terminal devices, where each of the plurality of terminal devices determines a maximum number of preamble transmissions according to the preamble transmission parameter information, where the preamble transmission is the largest.
  • the number of times is the maximum number of times the terminal device can transmit a random access preamble.
  • the first terminal device and the second terminal device may be included in the multiple terminal devices.
  • the first terminal device determines a maximum number of first preamble transmissions
  • the second terminal device determines the first The two preamble transmissions are the maximum number of times, and the maximum number of first preamble transmissions may be different from the maximum number of second preamble transmissions.
  • the multiple terminal devices may be classified into different categories according to different conditions, for example, according to whether the beam correspondence is classified, the first terminal device may be a terminal device whose beam correspondence is not established, and the second terminal device may be a beam corresponding device.
  • a terminal device is formed, wherein the correspondence of the beam correspondence may be that the correspondence between the transmit beam and the receive beam of the first terminal device is established.
  • the first terminal device is used to process the first type of service
  • the second site device is used to process the second type of service
  • the first type of service is different from the second type of service, but the application is The embodiment is not limited to this.
  • the network device sends the preamble transmission parameter information to the first terminal device, and the first terminal device determines the maximum number of corresponding first preamble transmissions according to the preamble transmission parameter information.
  • the first terminal device may be any one of the plurality of terminal devices, and the beam correspondence of the first terminal device may or may not be established.
  • the preamble transmission parameter information may include a first parameter
  • the first terminal device may determine, according to the first parameter, a maximum number of times of the first preamble transmission, and the maximum number of times of the first preamble transmission is greater than Or equal to the first parameter.
  • the first terminal device may determine the first parameter as the maximum number of times of the first preamble transmission.
  • the first terminal device may be a terminal device with a beam correspondence, the first terminal. The device directly selects the first parameter as the maximum number of times of the first preamble transmission according to the preamble transmission parameter information.
  • the first terminal device may further determine, according to the first parameter, a maximum number of times of the first preamble transmission, where the maximum number of the first preamble transmission is greater than the first parameter.
  • the first terminal device may determine, according to the type and/or the configuration information, the first coefficient, where the first coefficient is greater than 1, the first terminal device may determine, according to the first parameter and the first coefficient, that the maximum number of times of the first preamble transmission is equal to The product of the first coefficient and the first parameter.
  • the type information of the first terminal device may include a service type of the first terminal device, or may include a performance type.
  • the configuration information of the first terminal device may include a beam-related configuration of the first terminal device, or The related configuration of the antenna of the first terminal device may also be included, but the embodiment of the present application is not limited thereto.
  • the first terminal device may be a terminal device whose beam correspondence is not established, and the first coefficient is determined to be equal to the number of the transmit beams according to the number of the transmit beams included in the first terminal device, and the corresponding first preamble is The maximum number of transmissions can be determined as the product of the first coefficient and the first parameter.
  • the preamble transmission parameter information may further include a first parameter and a first coefficient, where the first coefficient is greater than 1, the first terminal device may determine, according to the first coefficient and the first parameter, The maximum number of first preamble transmissions is greater than or equal to the product of the first coefficient and the first parameter.
  • the first terminal device may determine the maximum number of first preamble transmissions as the product of the first coefficient and the first parameter.
  • the first terminal device may also consider the first coefficient as an upper limit, that is, the first terminal device may determine a second coefficient, where the second coefficient satisfies greater than 1 and is smaller than the first coefficient, and then the second coefficient is The product of the first parameter is determined as the maximum number of first preamble transmissions.
  • the first terminal device may determine the second coefficient according to the type and/or the configuration information. For example, the first terminal device is a terminal device whose beam correspondence is not established, and may determine that the second coefficient is equal to the transmit beam of the first terminal device.
  • the number of the second coefficient is smaller than the first coefficient, and the product of the second coefficient and the first parameter is determined as the maximum number of times of the first preamble transmission, and the maximum number of times of the first preamble transmission is less than the first coefficient and the first parameter. product.
  • the preamble transmission parameter information may further include a first parameter and a second parameter, where the second parameter is greater than the first parameter, and the first terminal device may determine that the maximum number of times of the first preamble transmission is less than Or equal to the second parameter.
  • the first terminal device may determine the second parameter as the maximum number of times of the first preamble transmission.
  • the first terminal device may determine the maximum number of times of the first preamble transmission to be greater than any value that the first parameter is smaller than the second parameter.
  • the preamble transmission parameter information may further include a first parameter and a second parameter, where the second parameter may be greater than or equal to or smaller than the first parameter, and the first terminal device determines the second coefficient and the The second parameter, the maximum number of times of the first preamble transmission of the first terminal device is less than or equal to the product of the second coefficient and the second parameter.
  • the first terminal device may determine the second coefficient according to the type and/or the configuration information, where the second coefficient is greater than 1.
  • the type information of the first terminal device may include a service type of the first terminal device, or may include a performance type.
  • the configuration information of the first terminal device may include a beam-related configuration of the first terminal device, or The related configuration of the antenna of the first terminal device may also be included, but the embodiment of the present application is not limited thereto.
  • the first terminal device may be a terminal device whose beam correspondence is not established, and the second coefficient is determined to be equal to the number of the transmit beams according to the number of the transmit beams included in the first terminal device, and the corresponding first preamble is The maximum number of transmissions can be determined as the product of the second coefficient and the second parameter.
  • the preamble transmission parameter information may further include a first parameter, a second parameter, and a second coefficient, where the second coefficient is greater than 1, the first terminal device may be configured according to the second coefficient and the second The second parameter determines that the maximum number of times of the first preamble transmission is greater than or equal to the product of the second coefficient and the second parameter.
  • the first terminal device may determine the maximum number of first preamble transmissions as the product of the second coefficient and the second parameter.
  • the first terminal device may also consider the second coefficient as an upper limit, that is, the first terminal device may determine a third coefficient, where the third coefficient satisfies greater than 1 and is smaller than the second coefficient, and then the third coefficient is The product of the second parameter is determined as the maximum number of first preamble transmissions.
  • the first terminal device may determine the third coefficient according to the type and/or the configuration information. For example, the first terminal device is a terminal device whose beam correspondence is not established, and may determine that the third coefficient is equal to the transmit beam of the first terminal device.
  • the number of the third coefficient is smaller than the second coefficient, and the product of the third coefficient and the second parameter is determined as the maximum number of times of the first preamble transmission, and the maximum number of times of the first preamble transmission is less than the second coefficient and the second parameter. product.
  • different terminal devices in multiple terminal devices may determine the maximum number of corresponding preamble transmissions according to the different manners described above, such that different terminal devices use different preamble transmissions for the maximum number of times.
  • the network device may send the preamble transmission parameter information in a broadcast manner.
  • the preamble transmission parameter information received by the plurality of terminal devices is the same, but since the maximum number of preamble transmissions can be determined in different manners, the plurality of terminal devices can determine the number of drunks in addition to different preamble transmissions.
  • the network device sends the preamble transmission parameter information in a broadcast form, where the preamble transmission parameter information includes the first parameter and the second parameter, and the corresponding multiple terminal devices receive the preamble transmission parameter information, and a part of the terminal devices may exist in the plurality of terminal devices.
  • the maximum number of preamble transmissions is determined as a first parameter, a part of the maximum number of preamble transmissions is determined to be a second parameter, and a part of the maximum number of preamble transmissions is determined to be between the first parameter and the second parameter.
  • the embodiment of the present application is not limited thereto.
  • the method for determining the number of random access preamble transmissions in the embodiment of the present application the preamble transmission parameter information sent by the network device to the plurality of terminal devices, so that different terminal devices can use the preamble transmission parameter information and the related information of the terminal device.
  • the maximum number of preamble transmissions can be flexibly determined, so that the random access delay of some terminal devices can be reduced, and the interference caused by preamble retransmission between some terminal devices can also be reduced.
  • FIG. 2 shows a schematic flowchart of a method 200 for determining the number of random access preamble transmissions according to an embodiment of the present application, which may be performed by a terminal device. As shown in FIG. 2, the method 200 includes:
  • the terminal device receives preamble transmission parameter information sent by the network device.
  • the terminal device determines, according to the preamble transmission parameter information, a maximum number of preamble transmissions, where the maximum number of preamble transmissions is a maximum number of times that the terminal device can send a random access preamble.
  • the network device may send the preamble transmission parameter information to the multiple terminal devices, so that different terminal devices may use the preamble transmission parameter information and the related information of the terminal device.
  • the maximum number of preamble transmissions can be flexibly determined, so that the random access delay of some terminal devices can be reduced, and the interference caused by preamble retransmission between some terminal devices can also be reduced.
  • the preamble transmission parameter information includes a first parameter, where the maximum number of preamble transmissions is greater than or equal to the first parameter.
  • the method further includes: determining, by the terminal device, the first coefficient, where the maximum number of preamble transmissions is less than or equal to a product of the first coefficient and the first parameter, The first coefficient is greater than one.
  • the preamble transmission parameter information includes the first coefficient.
  • the terminal device determines the first coefficient, including: the terminal device is configured according to the type and/or Set the information to determine the first coefficient.
  • the preamble transmission parameter information includes a second parameter, where the maximum number of preamble transmissions is greater than the first parameter, and the maximum number of preamble transmissions is less than or equal to the second parameter.
  • the method further includes: determining, by the terminal device, a second coefficient, where the maximum number of preamble transmissions is less than or equal to a product of the second coefficient and the second parameter, where The second coefficient is greater than one.
  • the preamble transmission parameter information includes a second coefficient.
  • the terminal device determines the second coefficient, and the terminal device determines the second coefficient according to the type and/or the configuration information.
  • the configuration information includes: at least one of a beam related configuration of the terminal device and an antenna related configuration of the terminal device.
  • the correspondence of the beam of the terminal device does not hold.
  • the network device in the method 200 may correspond to the network device in the method 100, and the terminal device in the method 200 may correspond to the first terminal device in the method 100, or may correspond to the second terminal device in the method 100, where not Let me repeat.
  • the network device may send the preamble transmission parameter information to the multiple terminal devices, so that different terminal devices may use the preamble transmission parameter information and the related information of the terminal device.
  • the maximum number of preamble transmissions can be flexibly determined, so that the random access delay of some terminal devices can be reduced, and the interference caused by preamble retransmission between some terminal devices can also be reduced.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application.
  • the implementation process constitutes any limitation.
  • the method for determining the number of random access preamble transmissions according to an embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 2 .
  • the following describes the determining random access preamble transmission according to an embodiment of the present application.
  • the network device 300 includes:
  • the determining unit 310 is configured to determine the preamble transmission parameter information, where the preamble transmission parameter information is used by each of the plurality of terminal devices to determine a maximum number of preamble transmissions, and the maximum number of preamble transmissions corresponding to each terminal device is a maximum number of times that each terminal device can send a random access preamble, where the preamble transmission parameter information includes a first parameter, and the corresponding preamble of each terminal device The maximum number of transmissions is greater than or equal to the first parameter;
  • the sending unit 320 is configured to send the preamble transmission parameter information to the multiple terminal devices.
  • the network device in the embodiment of the present application can send the preamble transmission parameter information to multiple terminal devices, so that different terminal devices can determine different maximum number of preamble transmissions, thereby reducing the random access delay of some terminal devices. It is possible to reduce interference caused by preamble retransmission between some terminal devices.
  • the multiple terminal devices include a first terminal device and a second terminal device, and the maximum number of first preamble transmissions corresponding to the first terminal device is different from the maximum number of second preamble transmissions corresponding to the second terminal device.
  • the preamble transmission parameter information includes a first coefficient, where the first coefficient is greater than 1, and the first preamble transmission maximum number is less than or equal to a product of the first coefficient and the first parameter.
  • the preamble transmission parameter information includes a second parameter, where the maximum number of times of the first preamble transmission is less than or equal to the second parameter.
  • the preamble transmission parameter information includes a second coefficient, where the second coefficient is greater than 1, and the maximum number of the first preamble transmission is less than or equal to a product of the second coefficient and the second parameter.
  • the maximum number of times of the second preamble transmission is equal to the first parameter.
  • the correspondence of the beams of the first terminal device is not established, and the correspondence of the beams of the second terminal device is established.
  • the network device 300 may correspond to the method 100 and the method 200 in the embodiments of the present application, and the foregoing and other operations and/or functions of the respective units in the network device 300 respectively implement FIG. 1
  • the corresponding processes of the network devices in the respective methods in FIG. 2 are not described herein again.
  • the network device in the embodiment of the present application can transmit the preamble transmission parameter information to the multiple terminal devices through the network device, so that different terminal devices can flexibly determine the maximum preamble transmission according to the preamble transmission parameter information and the related information of the terminal device.
  • the number of times can reduce the random access delay of some terminal devices, and can also reduce the interference caused by preamble retransmission between some terminal devices.
  • the terminal device 400 includes:
  • the receiving unit 410 is configured to receive preamble transmission parameter information sent by the network device.
  • the determining unit 420 is configured to determine, according to the preamble transmission parameter information, a maximum number of preamble transmissions, where the maximum number of preamble transmissions is a maximum number of times that the terminal device can send a random access preamble.
  • the terminal device in the embodiment of the present application receives the preamble transmission parameter sent by the network device to the multiple terminal devices, and the terminal device can flexibly determine the maximum number of preamble transmissions according to the preamble transmission parameter information and the related information of the terminal device, so that different terminals The device can determine the maximum number of different preamble transmissions, thereby reducing the random access delay of some terminal devices, and also reducing the interference caused by preamble retransmission between some terminal devices.
  • the preamble transmission parameter information includes a first parameter, where the maximum number of preamble transmissions is greater than or equal to the first parameter.
  • the determining unit 420 is specifically configured to: before determining the maximum number of times of the preamble transmission, determine a first coefficient, where the maximum number of preamble transmissions is less than or equal to a product of the first coefficient and the first parameter, the first coefficient Greater than 1.
  • the preamble transmission parameter information includes the first coefficient.
  • the determining unit 420 is specifically configured to: determine the first coefficient according to the type and/or the configuration information.
  • the preamble transmission parameter information includes a second parameter, where the maximum number of preamble transmissions is greater than the first parameter, and the maximum number of preamble transmissions is less than or equal to the second parameter.
  • the determining unit 420 is specifically configured to: before determining the maximum number of times of the preamble transmission, determine a second coefficient, where the maximum number of preamble transmissions is less than or equal to a product of the second coefficient and the second parameter, the second coefficient Greater than 1.
  • the preamble transmission parameter information includes a second coefficient.
  • the determining unit 420 is specifically configured to: determine the second coefficient according to the type and/or the configuration information.
  • the configuration information includes: at least one of a beam related configuration of the terminal device and an antenna related configuration of the terminal device.
  • the correspondence of the beam of the terminal device does not hold.
  • terminal device 400 may correspond to the method 100 and the method 200 in the embodiments of the present application, and the foregoing and other operations and/or functions of the respective units in the terminal device 400 respectively implement FIG. 1
  • the corresponding processes of the terminal devices in the respective methods in FIG. 2 are not described herein again.
  • the terminal device in the embodiment of the present application receives the preamble transmission parameter sent by the network device to the multiple terminal devices, and the terminal device can flexibly determine the maximum number of preamble transmissions according to the preamble transmission parameter information and related information of the terminal device, so that different The terminal device can determine the different front The maximum number of transmissions can be reduced, so that the random access delay of some terminal devices can be reduced, and the interference caused by preamble retransmission between some terminal devices can also be reduced.
  • FIG. 5 shows a schematic block diagram of a network device 500 according to an embodiment of the present application.
  • the network device 500 includes a processor 510 and a transceiver 520.
  • the processor 510 is connected to the transceiver 520, and is optional.
  • the network device 500 also includes a memory 530 that is coupled to the processor 510.
  • the processor 510, the memory 530, and the transceiver 520 communicate with each other through an internal connection path, and the memory 530 can be used to store instructions.
  • the processor 510 is configured to execute the memory 530 for storing the control and/or data signals.
  • the processor 510 is configured to: determine preamble transmission parameter information, where the preamble transmission parameter information is used by each of the plurality of terminal devices to determine a maximum number of times of the corresponding preamble transmission, The maximum number of preamble transmissions corresponding to each terminal device is the maximum number of times that each terminal device can send a random access preamble.
  • the preamble transmission parameter information includes a first parameter, and the maximum number of preamble transmissions corresponding to each terminal device is greater than or The first parameter is equal to; the transceiver 520 is configured to: send the preamble transmission parameter information to the multiple terminal devices.
  • the network device in the embodiment of the present application can send the preamble transmission parameter information to multiple terminal devices, so that different terminal devices can determine different maximum number of preamble transmissions, thereby reducing the random access delay of some terminal devices. It is possible to reduce interference caused by preamble retransmission between some terminal devices.
  • the multiple terminal devices include a first terminal device and a second terminal device, and the maximum number of first preamble transmissions corresponding to the first terminal device is different from the maximum number of second preamble transmissions corresponding to the second terminal device.
  • the preamble transmission parameter information includes a first coefficient, where the first coefficient is greater than 1, and the first preamble transmission maximum number is less than or equal to a product of the first coefficient and the first parameter.
  • the preamble transmission parameter information includes a second parameter, where the maximum number of times of the first preamble transmission is less than or equal to the second parameter.
  • the preamble transmission parameter information includes a second coefficient, where the second coefficient is greater than 1, and the maximum number of the first preamble transmission is less than or equal to a product of the second coefficient and the second parameter.
  • the maximum number of times of the second preamble transmission is equal to the first parameter.
  • the correspondence of the beams of the first terminal device is not established, and the correspondence of the beams of the second terminal device is established.
  • network device 500 may correspond to the embodiment in this application.
  • Network device 300 may correspond to performing respective subjects in methods 100 and 200 in accordance with embodiments of the present application, and the above and other operations and/or functions of various units in network device 500 are respectively implemented in Figures 1 and 2
  • the corresponding processes of the network devices in the respective methods are not described herein for the sake of brevity.
  • the network device in the embodiment of the present application can transmit the preamble transmission parameter information to the plurality of terminal devices through the network device, so that different terminal devices can flexibly determine the maximum number of preamble transmissions according to the preamble transmission parameter information and related information of the terminal device. Therefore, the random access delay of some terminal devices can be reduced, and interference caused by preamble retransmission between some terminal devices can also be reduced.
  • FIG. 6 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present application.
  • the terminal device 600 includes a processor 610 and a transceiver 620.
  • the processor 610 is connected to the transceiver 620, and is optional.
  • the terminal device 600 further includes a memory 630, and the memory 630 is connected to the processor 610.
  • the processor 610, the memory 630 and the transceiver 620 communicate with each other through an internal connection path, and the control unit and the data signal are transmitted.
  • the memory 630 can be used to store instructions, and the processor 610 is configured to execute the memory 630.
  • An instruction to control the transceiver 620 to send information or a signal the transceiver 620 is configured to: receive the preamble transmission parameter information sent by the network device, and the processor 610 is configured to: determine, according to the preamble transmission parameter information, a maximum number of preamble transmissions, where The maximum number of preamble transmissions is the maximum number of times the terminal device can transmit a random access preamble.
  • the terminal device in the embodiment of the present application receives the preamble transmission parameter sent by the network device to the multiple terminal devices, and the terminal device can flexibly determine the maximum number of preamble transmissions according to the preamble transmission parameter information and the related information of the terminal device, so that different terminals The device can determine the maximum number of different preamble transmissions, thereby reducing the random access delay of some terminal devices, and also reducing the interference caused by preamble retransmission between some terminal devices.
  • the preamble transmission parameter information includes a first parameter, where the maximum number of preamble transmissions is greater than or equal to the first parameter.
  • the transceiver 620 is configured to: before determining the maximum number of times of the preamble transmission, determine a first coefficient, where the maximum number of preamble transmissions is less than or equal to a product of the first coefficient and the first parameter, where the first coefficient is greater than 1.
  • the preamble transmission parameter information includes the first coefficient.
  • the transceiver 620 is configured to: determine the first coefficient according to the type and/or configuration information.
  • the preamble transmission parameter information includes a second parameter, where the maximum number of preamble transmissions is greater than The first parameter, the maximum number of times of the preamble transmission is less than or equal to the second parameter.
  • the transceiver 620 is configured to: before determining the maximum number of times of the preamble transmission, determine a second coefficient, where the maximum number of preamble transmissions is less than or equal to a product of the second coefficient and the second parameter, where the second coefficient is greater than 1.
  • the preamble transmission parameter information includes a second coefficient.
  • the transceiver 620 is configured to: determine the second coefficient according to the type and/or configuration information.
  • the configuration information includes: at least one of a beam related configuration of the terminal device and an antenna related configuration of the terminal device.
  • the correspondence of the beam of the terminal device does not hold.
  • the terminal device 600 may correspond to the terminal device 400 in the embodiment of the present application, and may correspond to the corresponding body in the methods 100 and 200 according to the embodiment of the present application, and the terminal device 600
  • the foregoing and other operations and/or functions of the respective units are respectively implemented in order to implement the corresponding processes of the terminal devices in the respective methods in FIG. 1 and FIG. 2, and are not described herein again for brevity.
  • the terminal device in the embodiment of the present application receives the preamble transmission parameter sent by the network device to the multiple terminal devices, and the terminal device can flexibly determine the maximum number of preamble transmissions according to the preamble transmission parameter information and the related information of the terminal device, so that different terminals The device can determine the maximum number of different preamble transmissions, thereby reducing the random access delay of some terminal devices, and also reducing the interference caused by preamble retransmission between some terminal devices.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory, flash memory, read only memory, programmable read only memory or electrically erasable Program memory, registers, etc. are well-known storage media in the field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be Ignore, or not execute.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour déterminer le nombre d'occurrences de transmission de préambule d'accès aléatoire, un dispositif de réseau et un dispositif terminal. Le procédé comprend : la détermination par un dispositif de réseau d'informations de paramètre de transmission de préambule, les informations de paramètre de transmission de préambule étant utilisées pour chaque dispositif terminal d'une pluralité de dispositifs terminaux pour déterminer un nombre maximum correspondant d'occurrences de transmission de préambule et le nombre maximal d'occurrences de transmission de préambule correspondant à chaque dispositif terminal est supérieur ou égal à un premier paramètre compris dans les informations de paramètre de transmission de préambule; et l'envoi par le dispositif de réseau d'informations de paramètre de transmission de préambule à la pluralité de dispositifs terminaux. Dans le procédé de détermination du nombre d'occurrences de transmission de préambule d'accès aléatoire, le dispositif de réseau et le dispositif terminal selon les modes de réalisation de l'invention, différents dispositifs terminaux peuvent déterminer de manière flexible le nombre maximal d'occurrences de transmission de préambule selon des informations de paramètre de transmission de préambule envoyées par le dispositif de réseau et des informations d'intérêt concernant le dispositif terminal, ce qui permet de réduire le retard d'accès aléatoire de certains dispositifs terminaux et peut également réduire les interférences provoquées par une retransmission de préambule entre certains dispositifs terminaux.
PCT/CN2017/088514 2017-06-15 2017-06-15 Procédé pour déterminer un nombre d'occurrences de transmission de préambule d'accès aléatoire, dispositif de réseau et dispositif terminal WO2018227500A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780050388.8A CN109644507B (zh) 2017-06-15 2017-06-15 确定随机接入前导传输次数的方法、网络设备和终端设备
PCT/CN2017/088514 WO2018227500A1 (fr) 2017-06-15 2017-06-15 Procédé pour déterminer un nombre d'occurrences de transmission de préambule d'accès aléatoire, dispositif de réseau et dispositif terminal

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PCT/CN2017/088514 WO2018227500A1 (fr) 2017-06-15 2017-06-15 Procédé pour déterminer un nombre d'occurrences de transmission de préambule d'accès aléatoire, dispositif de réseau et dispositif terminal

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CN116406021A (zh) * 2021-11-04 2023-07-07 北京小米移动软件有限公司 随机接入方法和装置

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CN101137239A (zh) * 2007-09-28 2008-03-05 中兴通讯股份有限公司 一种随机接入参数自动优化方法
CN102870486A (zh) * 2010-05-02 2013-01-09 Lg电子株式会社 用于在无线通信系统中执行随机接入过程的方法和设备
US8917640B2 (en) * 2011-11-23 2014-12-23 Lg Electronics Inc. Method and apparatus for handling signals used for delay tolerant access in a wireless communication system

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Publication number Priority date Publication date Assignee Title
CN101137239A (zh) * 2007-09-28 2008-03-05 中兴通讯股份有限公司 一种随机接入参数自动优化方法
CN102870486A (zh) * 2010-05-02 2013-01-09 Lg电子株式会社 用于在无线通信系统中执行随机接入过程的方法和设备
US8917640B2 (en) * 2011-11-23 2014-12-23 Lg Electronics Inc. Method and apparatus for handling signals used for delay tolerant access in a wireless communication system

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