WO2018102966A1 - Procédé d'accès aléatoire, dispositif de réseau et dispositif terminal - Google Patents

Procédé d'accès aléatoire, dispositif de réseau et dispositif terminal Download PDF

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Publication number
WO2018102966A1
WO2018102966A1 PCT/CN2016/108587 CN2016108587W WO2018102966A1 WO 2018102966 A1 WO2018102966 A1 WO 2018102966A1 CN 2016108587 W CN2016108587 W CN 2016108587W WO 2018102966 A1 WO2018102966 A1 WO 2018102966A1
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Prior art keywords
random access
request message
access request
information
occupied
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PCT/CN2016/108587
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English (en)
Chinese (zh)
Inventor
唐海
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广东欧珀移动通信有限公司
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Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to PCT/CN2016/108587 priority Critical patent/WO2018102966A1/fr
Priority to CN201680088658.XA priority patent/CN109644503B/zh
Priority to TW106141982A priority patent/TWI687120B/zh
Publication of WO2018102966A1 publication Critical patent/WO2018102966A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • Embodiments of the present invention relate to the field of communications technologies, and, more particularly, to a method, a network device, and a terminal device for random access.
  • the network device when the network device receives the random access request message sent by the terminal device, the network device sends the physical downlink shared channel (Physical Downlink Shared CHannel, PDSCH).
  • a Random Access Response (RAR) message where the random access request message carries a random access preamble.
  • the RAR message carries an index of a random access preamble, time adjustment information for uplink synchronization, initial uplink resource allocation (for transmitting subsequent msg3) information, and a temporary cell radio network temporary identifier (Cell-Radio Network Temporary) Identifier, C-RNTI).
  • C-RNTI Cell-Radio Network Temporary
  • the terminal device After receiving the random access request message, the terminal device needs to use a Random Access-Radio Network Temporary Identifier (RA-RNTI) to monitor the Physical Downlink Control Channel (PDCCH) for receiving. Belong to your own RAR message. If the random access preamble of the RAR message received by the terminal device is the same as the random access preamble sent by the terminal device, the terminal device determines that the RAR message belongs to itself, and performs corresponding operations according to the information carried in the RAR message.
  • RA-RNTI Random Access-Radio Network Temporary Identifier
  • PDCCH Physical Downlink Control Channel
  • the embodiments of the present invention provide a method, a network device, and a terminal device for random access.
  • the method has high compatibility, and is beneficial for the terminal device to accurately determine the RAR message that belongs to itself.
  • the first aspect provides a method for random access, where the method includes: receiving, by a network device, a random access request message sent by a first terminal device, where the random access request message carries a random access preamble; the network Determining, by the device, a random access radio network temporary identifier RA-RNTI according to the random access request message; the network device sending a random access response RAR message according to the RA-RNTI,
  • the RAR message carries preamble information and indication information, where the preamble information is used to indicate the random access preamble, and the preamble information and the indication information are used to receive the first one of the at least one terminal device of the RAR message.
  • the terminal device determines that the RAR message belongs to the first terminal device.
  • the first terminal device determines the RAR message that belongs to itself according to the indication information and the preamble information.
  • the method has high compatibility, and is advantageous for the first terminal device to accurately determine the RAR message that belongs to itself, so that the first terminal device can perform the random access process efficiently.
  • the determining, by the network device, the RA-RNTI according to the random access request message the network device determining, according to the first resource information of the resource occupied by the random access request message, the RA-RNTI
  • the indication information includes: second resource information of the resource occupied by the random access request message, information about a function value of the second resource information of the resource occupied by the random access request message, and the random access request At least one of the information carried by the message other than the random preamble, wherein the first resource information and the second resource information are different.
  • the indication information may include multiple types of information, which is flexible, so that the terminal device can efficiently determine the RAR message belonging to itself according to the indication information.
  • the first resource information is used to indicate a frequency domain resource that is occupied by the random access request message
  • the second resource information is used to indicate a time domain resource that is occupied by the random access request message
  • the network device and the first terminal device may be configured according to the random access request.
  • the first resource information of the frequency domain resource occupied by the message determines the RA-RNTI
  • the second resource information of the time domain resource occupied by the random access request message is sent to the first terminal device by using the RAR message, so that the first terminal device can obtain the RA.
  • the complexity of the RNTI while enabling the first terminal device to accurately determine its own RAR message.
  • the first resource information is used to indicate a frequency domain resource and a time domain resource that are occupied by the random access request message, where the second resource information is used to indicate that the random access request message is occupied.
  • the time domain resource, and the granularity of the time domain resource indicated by the first resource information is greater than the granularity of the time domain resource indicated by the second resource information.
  • the first resource information indicates the time domain resource and the frequency domain resource, but the granularity of the time domain resource indicated by the first resource information is large, and the first terminal device may be reduced.
  • the complexity of the RA-RNTI, the granularity of the time domain resource indicated by the second resource is small, and the first terminal device can accurately determine the RAR message belonging to itself.
  • the scheme can balance the complexity of receiving the RAR message by the terminal device and the determined number of times the terminal device determines the RAR message belonging to itself.
  • the second resource information is specifically used to indicate a start location of the time domain resource occupied by the random access request message and an end location of the time domain resource occupied by the random access request message. At least one of them.
  • the second resource information may indicate a starting location and/or an ending location, and the scheme has high flexibility and high compatibility and applicability.
  • the second resource information is specifically used to indicate at least one of the following information: a number of a first subframe occupied by the random access request message; the random access request message is occupied The number of the first time slot or the first mini time slot; the number of the last subframe occupied by the random access request message; the last time slot occupied by the random access request message or the last mini time slot Numbering.
  • the information of the function value is used to indicate at least one of the following information: a number of the first subframe occupied by the RAR message and a first one occupied by the random access request message
  • the difference between the numbers of the subframes; the difference between the number of the first slot occupied by the RAR message and the number of the first slot occupied by the random access request message, or the RAR message occupation The difference between the number of the first minislot and the number of the first minislot occupied by the random access request message; the number of the last subframe occupied by the RAR message is occupied by the random access request message
  • the difference between the numbers of the last subframe; the difference between the number of the last slot occupied by the RAR message and the number of the last slot occupied by the random access request message, or the RAR message occupation The difference between the number of the last minislot and the number of the last minislot occupied by the random access request message.
  • the information that is other than the random preamble carried by the random access request message includes location information of the first terminal device, identifier information of the first terminal device, and the random access. At least one of the transmission timestamps of the request message.
  • the solution not only enables the first terminal device to accurately determine the RAR message that belongs to itself, but further, the solution can fuse the msg2 message and the msg3 in the LTE system, which can save signaling overhead and improve the efficiency of random access of the terminal device.
  • the indication information is carried in a medium access control sub-header MAC subheader or MAC RAR of the RAR message.
  • the indication information can be flexibly carried in the RAR message with high compatibility.
  • a second aspect provides a method for random access, where the method includes: a first terminal device sends a random access request message to a network device, where the random access request message carries a random access preamble; the first terminal The device determines, according to the random access request message, a random access radio network temporary identifier RA-RNTI, and the first terminal device receives, according to the RA-RNTI, a random access response RAR message sent by the network device, where the RAR message carries preamble information. And the indication information; the first terminal device determines, according to the random access preamble, the preamble information, and the indication information that are included in the random access request message, whether the RAR message belongs to the first terminal device.
  • the first terminal device determines the RAR message that belongs to itself according to the indication information and the preamble information.
  • the accuracy of determining the RAR message belonging to the first terminal device by itself can be improved, so that the terminal device can perform random access efficiently.
  • the first terminal device receives a random access response (RAR) message sent by the network device, and includes: the resource occupied by the first terminal device according to the random access request message.
  • the first resource information determines the RA-RNTI; if the random access preamble indicated by the preamble information is the same as the random access preamble carried in the random access request message, and the indication information includes: the random access request The second resource information of the resource occupied by the message, the second resource information of the resource occupied by the random access request message, the function value of the variable, and the random access preamble carried by the random access request message
  • the method further includes: the first terminal device determines that the RAR message belongs to the first terminal device; wherein the first resource information and the second resource information are different.
  • the first terminal device determines the RAR message belonging to itself according to the preamble information and the indication information, so that the first terminal device can efficiently determine the RAR message belonging to itself.
  • the first resource information is used to indicate a frequency domain resource that is occupied by the random access request message
  • the second resource information is used to indicate a time domain resource that is occupied by the random access request message
  • the first terminal device can be occupied according to the random access request message.
  • the first resource information of the frequency domain resource determines the RA-RNTI
  • the second resource information of the time domain resource occupied by the random access request message is sent to the first terminal by using the RAR message.
  • the device can reduce the complexity of acquiring the RA-RNTI by the first terminal device, and can improve the accuracy of the first terminal device determining the RAR message that belongs to itself.
  • the first resource information is used to indicate a frequency domain resource and a time domain resource that are occupied by the random access request message, where the second resource information is used to indicate that the random access request message is occupied.
  • the time domain resource, and the granularity of the time domain resource indicated by the first resource information is greater than the granularity of the time domain resource indicated by the second resource information.
  • the first resource information indicates the time domain resource and the frequency domain resource, but the granularity of the time domain resource indicated by the first resource information is large, which can reduce the complexity of acquiring the RA-RNTI by the first terminal device, and can improve the complexity.
  • the scheme can balance the complexity of receiving the RAR message by the terminal device and the determined number of times the terminal device determines the RAR message belonging to itself.
  • the second resource information is specifically used to indicate a start location of the time domain resource occupied by the random access request message and an end location of the time domain resource occupied by the random access request message. At least one of them.
  • the second resource information is specifically used to indicate at least one of the following information: a number of the first subframe occupied by the random access request message; the random access request message is occupied The number of the first time slot or the first mini time slot; the number of the last subframe occupied by the random access request message; the last time slot occupied by the random access request message or the last mini time slot Numbering.
  • the information of the function value is used to indicate at least one of the following information: a number of the first subframe occupied by the RAR message and a first one occupied by the random access request message The difference between the numbers of the subframes; the difference between the number of the first slot occupied by the RAR message and the number of the first slot occupied by the random access request message, or the RAR message occupation The difference between the number of the first minislot and the number of the first minislot occupied by the random access request message; the number of the last subframe occupied by the RAR message is occupied by the random access request message The difference between the numbers of the last subframe; the difference between the number of the last slot occupied by the RAR message and the number of the last slot occupied by the random access request message, or the RAR message occupation The difference between the number of the last minislot and the number of the last minislot occupied by the random access request message.
  • the information that is included in the random access request message except the random preamble includes location information of the first terminal device, and an identifier of the first terminal device. And at least one of a transmission time stamp of the random access request message.
  • the solution can not only improve the accuracy of the terminal device to determine the RAR message of the terminal.
  • the solution can combine the msg2 message and the msg3 in the LTE system, which can save signaling overhead and improve the efficiency of random access of the terminal device.
  • the indication information is carried in a medium access control sub-header MAC subheader or MAC RAR of the RAR message.
  • the indication information can be flexibly carried in the RAR message with high compatibility.
  • the method further includes: the first terminal device determines that the RAR message does not belong to the first terminal device, where the indication information does not match the random access request message, and includes: the resource information included in the indication information and the random connection
  • the second resource information of the resource occupied by the incoming request message is different; and/or the information of the function value included in the indication information is different from the information of the function value of the second resource information of the resource occupied by the random access request message;
  • the location information included in the indication information is different from the location information of the first terminal device carried in the random access request message; and/or the identifier information included in the indication information and the first part carried in the random access request message
  • the identification information of a terminal device is different; and/or the sending timestamp included in the indication information and the sending time carried by the random access request message
  • a network device for performing the method of the first aspect or any possible implementation of the first aspect.
  • the network device may comprise modules and/or units for performing the method of any of the first aspect or the first aspect of the first aspect described above.
  • a terminal device for performing the method in any of the possible implementations of the second aspect or the second aspect.
  • the terminal device may comprise modules and/or units for performing the method of any of the above-described second or second aspects of the second aspect.
  • a fifth aspect provides a network device, including: a transceiver, a memory, and a processor, the transceiver for transmitting and receiving signals, the memory for storing instructions, the processor for executing instructions stored by the memory, and the memory Execution of the instructions stored in the processor causes the processor to perform the method of the first aspect or any possible implementation of the first aspect.
  • a sixth aspect provides a terminal device, including: a transceiver, a memory, and a processor, the transceiver for transmitting and receiving signals, the memory for storing instructions, and the processor for performing the storage
  • a computer storage medium having stored therein program code for indicating execution of instructions in any of the first aspect or any of the possible implementations of the first aspect.
  • a computer storage medium having stored therein program code for indicating execution of instructions in any of the possible implementations of the second aspect or the second aspect above.
  • a system chip comprising an input interface, an output interface, a processor, and a memory
  • the processor is configured to execute code in the memory, and when the code is executed, the processor can implement the foregoing The first aspect and the methods in various implementations.
  • a system chip comprising an input interface, an output interface, a processor, and a memory
  • the processor is configured to execute code in the memory, and when the code is executed, the processor can implement the foregoing
  • the second aspect and the methods in various implementations.
  • the RAR message may carry the indication information and the preamble information, where the indication information may include the second resource information of the resource occupied by the access request message, and the random access request message
  • the second resource information of the occupied resource is at least one of the function value of the variable and the information other than the random preamble carried by the random access request message, so that the first terminal device can according to the indication information.
  • the preamble information accurately determines the RAR message belonging to itself.
  • FIG. 1 is a schematic diagram of a wireless communication system suitable for use in an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart of a method for random access according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a medium access control subhead MAC subheader suitable for use in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an example of a MAC RAR applicable to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another example of a MAC RAR applicable to an embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of an example of a network device according to an embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of an example of a terminal device according to an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of another example of a network device according to an embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of another example of a terminal device according to an embodiment of the present invention.
  • Figure 10 is a schematic block diagram of a system chip in accordance with an embodiment of the present invention.
  • FIG. 1 illustrates a wireless communication system 100 suitable for use with embodiments of the present invention.
  • the wireless communication system 100 can include a network device 100.
  • Network device 100 can be a device that communicates with a terminal device.
  • Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area.
  • the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or may be a base station (NodeB, NB) in a WCDMA system, or may be an evolved base station in an LTE system.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the network device can be a relay station, an access point, an in-vehicle device, a wearable device, A network side device in a future 5G network or a network device in a publicly available Public Land Mobile Network (PLMN) in the future.
  • PLMN Public Land Mobile Network
  • the wireless communication system 100 also includes at least one terminal device, such as the first terminal device 120 and the second terminal device 130, located within the coverage of the network device 110.
  • the terminal device can be mobile or fixed.
  • the terminal device may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication device. , user agent or user device.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • the 5G system or network may also be referred to as a New Radio (NR) system or network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the wireless communication system 100 may include a plurality of network devices and may include within the coverage of each network device.
  • Other embodiments of the present invention are not limited in this embodiment of the present invention.
  • the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like.
  • network entities such as a network controller, a mobility management entity, and the like.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the network device Before sending the RAR message, the network device first determines the RA-RNTI according to the received random access request message. Accordingly, the terminal device determines the RA-RNTI according to the transmitted random access request message. In other words, the network device and the terminal device respectively determine the RA-RNTI corresponding to the random access request message. First, the manner of determining the RA-RNTI in the prior art will be introduced.
  • the network device and the terminal device determine the RA-RNTI according to the number of the first subframe occupied by the random access request message and the number of the frequency domain location occupied by the random access request message in the first subframe.
  • the network device and the terminal device may determine the RA-RNTI according to formula (1).
  • RA-RNTI 1+t_id+10f_id(1)
  • the t_id is the number of the first subframe occupied by the random access request message
  • the f_id is the number of the frequency domain location occupied by the random access request message in the first subframe.
  • the network device After receiving the random access request message, the network device determines the RA-RNTI according to formula (1), and sends a RAR message according to the RA-RNTI. Accordingly, the terminal device determines the RA-RNTI, and listens to the RA-RNTI according to the RA-RNTI. Your own RAR message. This method increases the complexity of the terminal device acquiring the RAR message.
  • the terminal device may send a random access request message to the network device through different beams.
  • each beam corresponds to The information of the time domain resource is different (for example, the corresponding first subframe has a different number).
  • the terminal device needs to try multiple RA-RNTIs when listening to its own RAR message, which causes the terminal device to acquire RARs with high complexity.
  • the terminal device may send multiple random access request messages (multiple random access request messages) on the same time domain resource by using frequency division multiplexing.
  • the random access preambles carried may be the same or different).
  • the terminal device also needs to try multiple RA-RNTIs when listening to the RAR message belonging to the first terminal device, which causes the terminal device to acquire the RAR message with high complexity.
  • the RA-RNTI may be determined in the following manner.
  • the RA-RNTI is determined according to the first resource information of the resource occupied by the random access request message.
  • the first resource information is used to indicate a frequency domain resource or a time domain resource occupied by the random access request message.
  • the network device and the terminal device can determine the RA-RNTI according to formula (2).
  • t_id is the number of the first subframe occupied by the random access request message
  • A is an adjustment parameter
  • the network device and the terminal device can determine the RA-RNTI according to formula (3).
  • RA-RNTI 10f_id+B(3)
  • the f_id is a frequency domain location number occupied by the random access request message in the first subframe occupied by the random access request message, and B is an adjustment parameter.
  • the manner of determining the RA-RNTI can reduce the complexity of the RAR message obtained by the terminal device.
  • the RAR message in the prior art is determined to have its own RAR message.
  • the combination of the methods is easy to cause the terminal device to judge the error.
  • the network device and the terminal device determine the RA-RNTI according to the first resource information, if both the first terminal device and the second terminal device are The random access request message is sent by the frequency domain resource A, and the random access request message sent by the first terminal device and the second terminal device includes a random access preamble B, and the network device first randomly connects according to the second terminal device.
  • Incoming request message to send RAR message (marked as a second RAR message, the first terminal device and the second terminal device both listen to the second RAR message, where the second RAR message carries information of the random access preamble B (for example, an index of the random access preamble B) .
  • the first terminal device may mistake the second RAR message as its own RAR message. And performing related operations by using the information in the second RAR message, causing the first terminal device to process an error.
  • the terminal device may easily cause an error.
  • the RA-RNTI is determined according to the first resource information of the resource occupied by the random access request message.
  • the first resource information is used to indicate the frequency domain resource and the time domain resource that are occupied by the random access request message, and the size of the time domain resource indicated by the first resource information in the second mode is larger.
  • the network device and the terminal device determine the RA-RNTI according to the information of the radio frame occupied by the random access request message (for example, the number of the first radio frame occupied).
  • the method is capable of balancing the complexity of receiving RAR messages by the terminal device and the number of times the terminal device determines its own RAR.
  • the terminal device may easily make an error. For details, refer to the above. The related descriptions are not repeated here for brevity.
  • a plurality of terminal devices occupy the same subframe and the frequency domain resource to send the same random access preamble, and after receiving the RAR message of a certain terminal device, the multiple terminal devices perform random connection according to the RAR message. Entering the preamble, the RAR message is considered to belong to itself, and the contention process is performed according to the RAR message. Since the terminal device does not correctly identify the RAR message that belongs to itself, the terminal device may cause meaningless competition.
  • an embodiment of the present invention provides a method for random access.
  • the RAR message sent by the network device includes preamble information and indication information, and the terminal device may determine whether the received RAR message is based on the preamble information and the indication information. belong to myself.
  • This method has high compatibility. It is advantageous for the terminal device to accurately determine the RAR message belonging to itself.
  • the method for random access according to an embodiment of the present invention is described in detail below.
  • FIG. 2 shows a schematic flow diagram of a method 200 for random access, in accordance with an embodiment of the present invention, as described in terms of device interaction.
  • the method 200 can be applied to a communication system including a network device and at least one terminal device.
  • the communication system may be the wireless communication system 100 shown in FIG. 1.
  • the method according to an embodiment of the present invention is described in detail by taking the interaction between the network device and the first terminal device (and the second terminal device) as an example.
  • the first terminal device is any one of the at least one terminal device, and the “first” is only used to distinguish the description, and should not be construed as limiting the embodiment of the present invention.
  • the second terminal device should not constitute any limitation on the embodiments of the present invention.
  • the method 200 includes:
  • the first terminal device sends a random access request message to the network device, and the network device receives the random access request message sent by the first terminal device, where the random access request message includes a random access preamble.
  • the first terminal device may send an access request message to the network device by using multiple beams.
  • the location of the starting subframe of the different beams may be different when the terminal device sends the random access request message in a multi-beam manner.
  • the first terminal device after the first terminal device sends the random access request message through one beam, it waits for the RAR message sent by the network device, and if it does not wait for the RAR message sent by the network device, uses another beam to send the random Accessing the request message, and waiting for the RAR message sent by the network device, if receiving the RAR message sent by the network device, stopping sending the random access request message; otherwise, selecting the beam to send the random access request message again.
  • the network device determines the RA-RNTI according to the random access request message, and accordingly, the first terminal device determines the RA-RNTI according to the random access request message;
  • the network device sends a RAR message according to the RA-RNTI.
  • the first terminal device receives the RAR message sent by the network device according to the RA-RNTI, where the RAR message includes indication information and preamble information, where the preamble information is used. Indicating the random access preamble;
  • the network device sends the RAR message according to the RA-RNTI and the random access request message.
  • the first terminal device determines the RAR according to the indication information and the preamble information.
  • the message belongs to the first terminal device.
  • the “random access request message sent by the first terminal device” may be recorded as “first request message”, and “the random access preamble carried by the first random access request message” may be recorded as “first”.
  • the preamble “records the "RA-RNTI determined according to the first request message” as “the first RA-RNTI” and the "RAR message transmitted by the network device according to the first request message” as the "first RAR message”.
  • the first terminal device needs to determine whether the received RAR message belongs to the first terminal device.
  • the first terminal device can determine that the RAR message belongs to the first terminal device.
  • the first terminal device may determine that the RAR message does not belong to the first terminal device.
  • the RAR message not only carries the preamble information but also carries the indication information, compared with the RAR message of the random access preamble in the RAR message.
  • the terminal device determines the RAR message that belongs to the user according to the preamble information and the indication information carried in the RAR message.
  • the method has high compatibility and can be applied to multiple application scenarios, and is beneficial for the first terminal device to accurately determine the RAR that belongs to the user. Message.
  • the method 200 may further include:
  • the second terminal device sends a second random access request message to the network device.
  • the network device receives the second random access request message, and may record the second random access request message as the second request. Message";
  • the second terminal device determines the RA-RNTI according to the second request message.
  • the network device determines the RA-RNTI according to the second request message, and may record “the RA-RNTI determined according to the second request message” as “ Second RA-RNTI”;
  • the network device sends a second RAR message according to the second RA-RNTI.
  • the second terminal device determines, according to the preamble information and the indication information carried in the second RAR message, that the second RAR message is a RAR message that belongs to the user, and the second terminal device stops monitoring. Listen to your own RAR message;
  • the network device sending the second RAR message may include at least the following two situations:
  • Case 1 The first RA-RNTI and the second RA-RNTI are different, and the first terminal device cannot receive the second RAR message.
  • the first RA-RNTI is the same as the second RA-RNTI, and the first terminal device and the second terminal device may receive the second RAR message, where the first terminal device needs to be according to the indication information in the second RAR message. And the preamble information determines whether the second RAR message belongs to the first terminal device. If the first terminal device determines that the second RAR message belongs to the first terminal device, the first terminal device may process according to the second RAR message; if the first terminal device determines that the second RAR message does not belong to the first A terminal device, the first terminal device needs to continue to listen to RAR messages belonging to the first terminal device.
  • the method 200 can include:
  • the first terminal device determines, according to the preamble information and the indication information that is carried by the second RAR message, that the second RAR message does not belong to the first terminal device, and the first terminal device needs to continue to monitor the RAR message that belongs to the first terminal device, where The indication information carried by the second RAR message is different from the indication information corresponding to the first request message.
  • the indication information carried by the RAR message may include at least one of the following types of indication information:
  • the first type of indication information includes second resource information of resources occupied by the random access request message.
  • the indication information carried by the first RAR includes the second resource information of the resource occupied by the first request message
  • the indication information carried by the second RAR includes the second resource information of the resource occupied by the second request message
  • the domain types of the first resource information and the second resource information are different.
  • the first resource information is used to indicate that the random access request message occupies the frequency domain resource
  • the second resource information is used to indicate the time domain resource occupied by the random access request message. That is, the network device and the terminal device determine the RA-RNTI according to the first resource information of the resource occupied by the random access request message, and the first resource information is used to indicate the frequency domain resource occupied by the random access request message, and the second resource information A time domain resource used to indicate that the random access request message is occupied.
  • the second resource information may be used to indicate at least one of a start location of a time domain resource occupied by the random access request message and an end location of a time domain resource occupied by the random access request message.
  • the second resource information is specifically used to indicate at least one of the following information:
  • the indication information carried by the first RAR message includes the second resource information, where the second resource information is used to indicate the number of the first subframe occupied by the first request message, and the second resource information carried by the second RAR message is used for Indicates the number of the first subframe occupied by the second request message.
  • the frequency domain resource and the time domain resource can be separated by the first type of indication information. For example, determining the RA-RNTI by using the frequency domain resource occupied by the random access request message, and determining the indication information by using the time domain resource occupied by the random access request message, the method may enable the first terminal device to accurately determine the RAR message that belongs to itself. At the same time, the method can reduce the complexity of receiving the RAR message by the first terminal device.
  • the indication information includes 1a
  • the frequency domain resources occupied by the first request message and the second request message are all A
  • the first preamble and the second preamble are both B
  • the first request message occupies the first.
  • the number of the subframe is N (N ⁇ 0)
  • the number of the first subframe occupied by the second request message is M (M ⁇ 0, and M ⁇ N)
  • the network device sends the second request message and then sends the second a RAR message
  • the second RAR message includes information and a number M of the second preamble B
  • the first terminal device and the second terminal device send the random access request message using the same frequency domain resource
  • the first terminal device and the second terminal device The terminal device can receive (listen to) the second RAR message.
  • the first terminal device determines that the second RAR message does not belong to itself, and the first terminal device continues to listen to the RAR message belonging to itself. If the first terminal device listens to the information including the first preamble B and the first RAR message of the number M, the first terminal device determines that the first RAR message belongs to the first terminal device.
  • the granularity of the resource indicated by the first resource information and the second resource information is different, and the granularity of the resource indicated by the first resource information is greater than The granularity of the resource indicated by the second resource information.
  • the first resource information is used to indicate that the random access request message (for example, the first request message) occupies a frequency domain resource and a time domain resource
  • the second resource information is used to indicate that the random access request message (first request message) is occupied.
  • the time domain resource, the granularity of the time domain resource indicated by the first resource information is greater than the granularity of the time domain resource indicated by the second resource information.
  • the granularity in the embodiment of the present invention may refer to a unit size of a resource.
  • the granularity of the radio frame is greater than the granularity of the subframe, and the granularity of the subframe is greater than the granularity of the slot.
  • the granularity can also reflect the accuracy of the time domain resource. In other words, the accuracy of the time domain resource indicated by the second resource information is higher than the accuracy of the time domain resource indicated by the first resource information.
  • the first resource information is used to indicate the information of the radio frame occupied by the random access request message
  • the second resource information is used to indicate the information of the subframe occupied by the random access request message.
  • the first resource information is used to indicate information about a subframe occupied by the random access request message
  • the second resource information is used to indicate information of a time slot (or mini slot) occupied by the random access request message.
  • the complexity of receiving the RAR message and the number of times the RAR message is received can be balanced by the second type of indication information.
  • the first terminal device may first receive a part of the RAR message according to the frequency domain resource occupied by the random access request message and the large-area time domain resource, and may reduce the complexity of receiving the RAR message and the number of times the RAR message is received, the first terminal.
  • the device determines its own RAR message (ie, the first RAR message) according to the small-grained time domain resource, which is beneficial for the first terminal device to accurately identify the RAR message that belongs to itself.
  • the first terminal device sends the first request message A, the first request message B, and the third request message C through three beams, and the first request message A, the first request message B, and the third request message C occupy the same frequency.
  • a domain resource and a radio frame, and the first subframes occupied by the three first request messages are numbered 1, 2, and 3, respectively, and the three first request messages correspond to the same RA-RNTI, and the first terminal device may According to the RA-RNTI receiving any one of the three first request messages (without attempting multiple RA-RNTIs), the complexity of receiving the RAR message can be reduced.
  • the second resource information for accurately indicating the time domain resource of the first request message is carried by the first RAR message, which is advantageous for the first terminal device to accurately identify the RAR message belonging to itself.
  • the frequency domain resource and the starting subframe used by the random access request message are still determined.
  • the RA-RNTI, the indication information included in the first RAR message is the number of the time slot occupied by the first request message, and the method can improve the accuracy of the first terminal device determining the own RAR message, so that the first terminal device can efficiently Perform a random access process.
  • the second type of information indicating that the second resource information occupied by the random access request message is a function value of the variable.
  • the indication information carried by the first RAR includes information of a function value of the second resource information of the resource occupied by the first request message
  • the indication information carried by the second RAR includes the second resource occupied by the second request message.
  • the resource information is information of the function value of the variable.
  • the second resource information is used to indicate a time domain resource
  • the indication information may be used to indicate at least one of the following information:
  • the indication information carried by the first RAR message is used to indicate a difference between the number of the first subframe occupied by the first RAR message and the number of the first subframe occupied by the first request message
  • the second RAR message The carried indication information is used to indicate a difference between a number of the first subframe occupied by the second RAR message and a number of the first subframe occupied by the first request message.
  • the first terminal device may determine, according to the indication information in the RAR message, the information of the time domain resource occupied by the random access request message corresponding to the RAR message, and determine the information of the determined time domain resource and send the information by itself. Whether the information of the time domain resource of the random access request message is the same, if the same, determining that the RAR message belongs to itself, if different, determining the RAR cancellation The information does not belong to itself and continues to listen to its own RAR message.
  • the indication information includes 2a
  • the first request message and the second request message occupy the same frequency domain resource A
  • the first preamble and the second preamble are both B
  • the first subframe occupied by the first request message The number is N (N ⁇ 0)
  • the number of the first subframe occupied by the second request message is M (M ⁇ 0, and M ⁇ N)
  • the network device receives the second request message at the Kth (N ⁇ K).
  • the second RAR message carries the information of the second preamble B and the difference KM
  • the first terminal device determines, according to the difference KM, the random connection corresponding to the second RAR message.
  • the number of the first subframe occupied by the incoming request message is M, and the first terminal device may determine that the second RAR message does not belong to the first terminal device. If the first RAR message is received by the first terminal device, the first RAR message carries the information of the first preamble B and the difference KN, and the first terminal device determines, according to the difference KN, the random access corresponding to the second RAR message.
  • the number of the first subframe occupied by the request message is N, and the first terminal device determines that the random access request message corresponding to the first RAR message is the same as the preamble information and the occupied resource information of the first request message. The first terminal device determines that the first RAR message belongs to the first terminal device.
  • the third type of indication information includes information other than the random access preamble carried by the random access request message.
  • the third type of indication information may include at least one of the following information:
  • the first request message carries the location information of the first terminal device
  • the first RAR carries the location information of the first terminal device
  • the second request message carries the location information of the second terminal device
  • the second RAR carries the second terminal device. Location information.
  • the first request message carries the identifier information of the first terminal device
  • the first RAR carries the identifier information of the first terminal device
  • the second request message carries the identifier information of the second terminal device
  • the second RAR carries the second terminal device. Identification information.
  • the timestamp of the random access request message For example, the first RAR message carries the sending timestamp of the first request message, and the second RAR message carries the sending timestamp of the second request message.
  • the sending timestamp may include a sequence of characters, which is used to identify a sending time of the random access request message, and the sending timestamp may also be a specific sending time (for example, 12:15 Beijing time) Minutes 50 seconds).
  • the transmission timestamp may also be part of the information at the time of transmission (eg, 50s).
  • the msg2 message and the msg3 in the existing LTE system may be fused, which can save signaling overhead and improve the efficiency of random access of the terminal device.
  • the first request message sent by the first terminal device carries the first preamble and the identifier information of the first terminal device, and if the RAR message received by the first terminal device includes the first preamble and the identifier information, the first The terminal device may determine that the RAR message belongs to the first terminal device, and further, the first terminal device may further determine that the first terminal device competes successfully in the random access process.
  • the first terminal device determines whether the indication information and the preamble information carried in the RAR message match the random request message sent by the first terminal device. If the matching, the first terminal device determines that the RAR message belongs to itself. A mismatch determines that the RAR message does not belong to itself.
  • the preamble information carried in the RAR message For example, if the random access preamble indicated by the preamble information carried in the RAR message is the same as the first preamble carried in the first request message, the preamble information matches the first request message. Otherwise, it does not match.
  • the indication information includes the resource information
  • the resource information is the same as the second resource information of the resource occupied by the first request message, or the indication information includes the second resource information of the resource occupied by the first request message
  • the resource information included in the indication information is the number of the first subframe occupied by the first request message, and the resource information included in the indication information matches the first request message, and vice versa.
  • the RAR message carries the information of the function value
  • the information of the function value is the same as the information of the function value of the variable of the second resource information of the resource occupied by the first request message (or the indication information includes the first request message)
  • the second resource information of the occupied resource is information of a function value of the variable.
  • the information of the function value included in the indication information is the same as the information of the function value determined by the first terminal device according to the first request message and the received RAR message.
  • the information of the function value included in the indication information matches the first request message, and vice versa.
  • the indication information includes location information
  • the location information is the same as the location information of the first terminal device carried by the first request message (or the indication information includes location information of the first terminal device)
  • the indication information includes The location information matches the first request message, and vice versa.
  • the indication information includes the identifier information
  • the identifier information is carried by the first request message
  • the identifier information of the first terminal device is the same (or the indication information includes the identifier information of the first terminal device), and the indication information includes the identifier information that matches the first request message, and vice versa.
  • the indication information includes a sending timestamp
  • the sending timestamp is the same as the sending timestamp of the first terminal device carried by the first request message
  • the indication information includes a sending timestamp of the first request message
  • the indication information includes that the sending timestamp matches the first request message, and vice versa.
  • the terminal device determines that the RAR message does not belong to itself.
  • the indication information may be carried in a MAC subheader of the RAR message.
  • 3 is a schematic diagram of a MAC subheader suitable for use in an embodiment of the present invention.
  • the MAC subheader of the RAR message includes the following fields:
  • Random access preamble ID (RAPID);
  • the indication information may be carried in one of the fields included in the MAC subheader.
  • the indication information may be carried in a MAC RAR of the RAR message.
  • 4 is a schematic diagram of an example of a MAC RAR applicable to an embodiment of the present invention. This figure 4 is mainly for the MAC RAR of a normal user.
  • FIG. 5 is a schematic diagram of another example of a MAC RAR applicable to an embodiment of the present invention. This FIG. 5 is mainly for the MAC RAR of the coverage enhanced type user. As shown in FIG. 4 and FIG. 5, the MAC RAR includes at least the following fields:
  • the indication information may be carried in one of the fields included in the MCA RAR.
  • the network device may further add an extension field in the MAC RAR, where the extension field is specifically used to carry the indication information.
  • the RAR message carries the indication information and the preamble information in the RID message according to the index of the random access preamble carried in the RAR message. It has high compatibility and can be applied to multiple application scenarios, which is beneficial for the terminal device to accurately determine its own RAR message.
  • FIG. 6 is a schematic block diagram of a network device 300 in accordance with an embodiment of the present invention. As shown in FIG. 6, a network device 300 includes:
  • the receiving unit 310 is configured to receive a random access request message sent by the first terminal device, where the random access request message carries a random access preamble;
  • the processing unit 320 is configured to determine, according to the random access request message, a random access radio network temporary identifier RA-RNTI;
  • the sending unit 330 is configured to send, according to the RA-RNTI, a random access response RAR message, where the RAR message carries preamble information and indication information, where the preamble information is used to indicate the random access preamble, the preamble information, and the The first terminal device in the at least one terminal device that receives the RAR message indicates that the RAR message belongs to the first terminal device.
  • the processing unit 320 is configured to: determine the RA-RNTI according to the first resource information of the resource occupied by the random access request message; the indication information includes: a second resource occupied by the random access request message The resource information, the second resource information of the resource occupied by the random access request message, the information of the function value of the variable, and the at least one of the information other than the random preamble carried by the random access request message, The first resource information is different from the second resource information.
  • the first resource information is used to indicate a frequency domain resource that is occupied by the random access request message
  • the second resource information is used to indicate a time domain resource occupied by the random access request message
  • the first resource information is used to indicate a frequency domain resource and a time domain resource that are occupied by the random access request message
  • the second resource information is used to indicate a time domain resource occupied by the random access request message
  • the granularity of the time domain resource indicated by the first resource information is greater than the granularity of the time domain resource indicated by the second resource information.
  • the second resource information is specifically used to indicate at least one of a start location of the time domain resource occupied by the random access request message and an end location of the time domain resource occupied by the random access request message.
  • the second resource information is specifically used to indicate at least one of the following information: a number of the first subframe occupied by the random access request message; and a first time slot occupied by the random access request message Or the number of the first minislot; the number of the last subframe occupied by the random access request message; the last slot or the last minislot occupied by the random access request message number.
  • the information of the function value is used to indicate at least one of the following information: between the number of the first subframe occupied by the RAR message and the number of the first subframe occupied by the random access request message The difference between the number of the first slot occupied by the RAR message and the number of the first slot occupied by the random access request message, or the first minislot occupied by the RAR message The difference between the number and the number of the first minislot occupied by the random access request message; the number of the last subframe occupied by the RAR message and the last subframe occupied by the random access request message The difference between the numbers; the difference between the number of the last slot occupied by the RAR message and the number of the last slot occupied by the random access request message, or the last minislot occupied by the RAR message. The difference between the number and the number of the last minislot occupied by the random access request message.
  • the information that is included in the random access request message except the random preamble includes location information of the first terminal device, identifier information of the first terminal device, and a sending timestamp of the random access request message. At least one of them.
  • the indication information is carried in a medium access control sub-header MAC subheader or MAC RAR of the RAR message.
  • the network device 300 can correspond to a network device in the method 200 for random access in accordance with an embodiment of the present invention, which can include a unit for performing the method performed by the network device in the above method.
  • each unit in the network device 300 and the other operations and/or functions described above are respectively used for the corresponding processes of the foregoing method, and are not described herein again for brevity.
  • FIG. 7 is a schematic block diagram of a terminal device 400 according to an embodiment of the present invention. As shown in FIG. 7, a terminal device is a first terminal device, and the terminal device includes:
  • the sending unit 410 is configured to send a random access request message to the network device, where the random access request message carries a random access preamble;
  • the processing unit 420 is configured to determine, according to the random access request message, a random access radio network temporary identifier RA-RNTI;
  • the receiving unit 430 is configured to receive, according to the RA-RNTI, a random access response (RAR) message sent by the network device, where the RAR message carries preamble information and indication information;
  • RAR random access response
  • the processing unit 420 is further configured to: determine, according to the random access preamble, the preamble information, and the indication information carried in the random access request message, whether the RAR message belongs to the first terminal device.
  • the processing unit 420 is specifically configured to: according to the resource occupied by the random access request message.
  • the resource information determines the RA-RNTI; if the random access preamble indicated by the preamble information is the same as the random access preamble carried by the random access request message, and the indication information includes: the random access request message is occupied
  • the processing unit 420 is at least one of the second resource information of the resource, the information of the function value with the second resource information as a variable, and the information other than the random preamble carried by the random access request message.
  • the method further includes: determining that the RAR message belongs to the first terminal device; wherein the first resource information and the second resource information are different.
  • the first resource information is used to indicate a frequency domain resource that is occupied by the random access request message
  • the second resource information is used to indicate a time domain resource occupied by the random access request message
  • the first resource information is used to indicate a frequency domain resource and a time domain resource that are occupied by the random access request message
  • the second resource information is used to indicate a time domain resource occupied by the random access request message
  • the granularity of the time domain resource indicated by the first resource information is greater than the granularity of the time domain resource indicated by the second resource information.
  • the second resource information is specifically used to indicate at least one of a start location of the time domain resource occupied by the random access request message and an end location of the frequency domain resource occupied by the random access request message.
  • the second resource information is specifically used to indicate at least one of the following information: a number of the first subframe occupied by the random access request message; and a first time slot occupied by the random access request message Or the number of the first minislot; the number of the last subframe occupied by the random access request message; the number of the last slot or the last minislot occupied by the random access request message.
  • the information of the function value is used to indicate at least one of the following information: between the number of the first subframe occupied by the RAR message and the number of the first subframe occupied by the random access request message The difference between the number of the first slot occupied by the RAR message and the number of the first slot occupied by the random access request message, or the first minislot occupied by the RAR message The difference between the number and the number of the first minislot occupied by the random access request message; the number of the last subframe occupied by the RAR message and the last subframe occupied by the random access request message The difference between the numbers; the difference between the number of the last slot occupied by the RAR message and the number of the last slot occupied by the random access request message, or the last minislot occupied by the RAR message. The difference between the number and the number of the last minislot occupied by the random access request message.
  • the information that is included in the random access request message except the random preamble includes the At least one of location information of the first terminal device, identification information of the first terminal device, and a transmission timestamp of the random access request message.
  • the indication information is carried in a medium access control sub-header MAC subheader or MAC RAR of the RAR message.
  • the method further includes: The first terminal device determines that the RAR message does not belong to the first terminal device, where the indication information does not match the random access request message, and includes: the resource information included in the indication information and the resource occupied by the random access request message
  • the second resource information is different; and/or the information of the function value included in the indication information is different from the information of the function value of the second resource information of the resource occupied by the random access request message; and/or the indication information
  • the location information is different from the location information of the first terminal device carried in the random access request message; and/or the identifier information included in the indication information and the identifier information of the first terminal device carried in the random access request message Different; and/or the indication information includes a transmission timestamp that is different from the transmission timestamp carried by the random access request message.
  • the terminal device 400 may correspond to a first terminal device in the method 200 for random access according to an embodiment of the present invention, and the terminal device 400 may include a method for performing the first terminal device execution in the above method. Unit.
  • each unit in the terminal device and the other operations and/or functions described above are respectively used for the corresponding processes of the foregoing method, and are not described herein again for brevity.
  • FIG. 8 is a schematic block diagram of a network device 500 in accordance with an embodiment of the present invention. As shown in FIG. 8, the network device 500 includes a transceiver 510 and a processor 520.
  • the transceiver 510 is configured to: receive a random access request message sent by the first terminal device, where the random access request message carries a random access preamble; and the processor 520 is configured to: determine, according to the random access request message, the random access
  • the radio network temporary identifier RA-RNTI is further configured to: send a random access response RAR message according to the RA-RNTI, where the RAR message carries preamble information and indication information, where the preamble information and the indication information are used
  • the first terminal device in the at least one terminal device that receives the RAR message determines that the RAR message is an RAR message belonging to the first terminal device, and the preamble information is further used to indicate the random access preamble.
  • the network device 500 can correspond to a network device in the method 200 for random access in accordance with an embodiment of the present invention, which can include a physical unit for performing the method performed by the network device in the above method. And, each physical unit in the network device and the other operations described above The functions and/or functions are respectively for the corresponding processes of the above methods, and are not described herein for brevity.
  • FIG. 9 is a schematic block diagram of a terminal device 600 according to an embodiment of the present invention.
  • the terminal device 600 is a first terminal device.
  • the terminal device 600 includes a transceiver 610 and a processor 620.
  • the transceiver 610 is configured to: send a random access request message to the network device, where the random access request message carries a random access preamble; the processor 620 is configured to: determine, according to the random access request message, a random access wireless network temporary identifier
  • the RA-RNTI is further configured to: receive, according to the RA-RNTI, a random access response (RAR) message sent by the network device according to the random access request message, where the RAR message carries preamble information and indication information, the preamble The information is used to indicate the random access preamble;
  • the processor 630 is further configured to: determine, according to the preamble information and the indication information, the RAR message as an RAR message belonging to the first terminal device
  • the terminal device 600 may correspond to a first terminal device in the method 200 for random access according to an embodiment of the present invention, and the terminal device 600 may include a method for performing execution by the first terminal device in the above method.
  • Physical unit In addition, the physical units in the terminal device and the other operations and/or functions described above are respectively used for the corresponding processes of the foregoing methods, and are not described herein for brevity.
  • FIG. 10 is a schematic structural diagram of a system chip according to an embodiment of the present invention.
  • the system chip 700 of FIG. 10 includes an input interface 701, an output interface 702, a processor 703, and a memory 704 connected by a bus 705 for executing code in the memory 704.
  • the processor 703 when the code is executed, the processor 703 implements a method performed by a network device in a method embodiment. For the sake of brevity, it will not be repeated here.
  • the processor 703 implements the method performed by the first device in the method embodiment. For the sake of brevity, it will not be repeated here.
  • the processor in the embodiment of the present invention may be an integrated circuit chip with signal processing capability.
  • 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 central processing unit (CPU), the processor may be another general-purpose processor, a digital signal processor (DSP), or an application specific integrated circuit (ASIC). ), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • the methods and steps disclosed in the embodiments of the present invention may 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 invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software in the decoding processor.
  • the software can be located in a random storage medium, such as a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, and the like.
  • 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 embodiments of the invention may be a volatile memory or a non-volatile memory, or may include both volatile and nonvolatile 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.
  • Volatile memory can be a random access memory (RAM) that acts as an external cache.
  • RAM static random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • ESDRAM enhancement Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM Direct Memory Bus Random Memory
  • bus system may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • bus systems may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • various buses are labeled as bus systems in the figure.
  • Embodiments of the present invention also provide a computer readable storage medium storing one or more programs, the one or more programs including instructions that are portable electronic devices that include a plurality of applications When executed, the portable electronic device can be enabled to perform the method of an embodiment of the present invention.
  • the disclosed system, apparatus, and method 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.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • 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 embodiments of the present invention 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.
  • This functionality if implemented as a software functional unit and sold or used as a standalone product, can be stored on a computer readable storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method in accordance with various embodiments of the present invention.
  • 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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  • Mobile Radio Communication Systems (AREA)

Abstract

Selon des modes de réalisation, la présente invention concerne un procédé d'accès aléatoire, un dispositif de réseau et un dispositif terminal. Le procédé possède une compatibilité élevée et permet à un dispositif terminal de déterminer avec précision une réponse d'accès aléatoire (RAR) appartenant au dispositif terminal lui-même. Le procédé comprend : la réception, au moyen d'un dispositif de réseau, d'un message de demande d'accès aléatoire envoyé par un premier dispositif terminal, le message de demande d'accès aléatoire acheminant un préambule d'accès aléatoire ; la détermination, par le dispositif de réseau, d'un identifiant temporaire de réseau radioélectrique d'accès aléatoire (RA-RNTI) en fonction du message de demande d'accès aléatoire ; l'envoi, par le dispositif de réseau, d'un message RAR en fonction du RA-RNTI, le message RAR acheminant des informations de préambule et des informations d'indication, les informations de préambule étant utilisées pour indiquer le préambule d'accès aléatoire et les informations de préambule, les informations d'indication étant utilisées pour le premier dispositif terminal dans au moins un dispositif terminal recevant le message RAR afin de déterminer que le message RAR appartient au premier dispositif terminal.
PCT/CN2016/108587 2016-12-05 2016-12-05 Procédé d'accès aléatoire, dispositif de réseau et dispositif terminal WO2018102966A1 (fr)

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PCT/CN2016/108587 WO2018102966A1 (fr) 2016-12-05 2016-12-05 Procédé d'accès aléatoire, dispositif de réseau et dispositif terminal
CN201680088658.XA CN109644503B (zh) 2016-12-05 2016-12-05 用于随机接入的方法、网络设备和终端设备
TW106141982A TWI687120B (zh) 2016-12-05 2017-11-30 用於隨機接入的方法、網路設備和終端設備

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CN112449764A (zh) * 2019-07-03 2021-03-05 北京小米移动软件有限公司 随机接入方法、装置、系统及存储介质
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WO2021068172A1 (fr) * 2019-10-10 2021-04-15 Oppo广东移动通信有限公司 Procédé d'accès aléatoire, dispositif électronique et support de stockage
CN114223308A (zh) * 2019-10-10 2022-03-22 Oppo广东移动通信有限公司 一种随机接入方法、电子设备及存储介质

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