WO2020200117A1 - Procédé d'accès aléatoire, procédé d'indication, dispositif de réseau et terminal - Google Patents

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

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Publication number
WO2020200117A1
WO2020200117A1 PCT/CN2020/081825 CN2020081825W WO2020200117A1 WO 2020200117 A1 WO2020200117 A1 WO 2020200117A1 CN 2020081825 W CN2020081825 W CN 2020081825W WO 2020200117 A1 WO2020200117 A1 WO 2020200117A1
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WIPO (PCT)
Prior art keywords
random access
response message
access response
type
terminal
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PCT/CN2020/081825
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English (en)
Chinese (zh)
Inventor
倪吉庆
周伟
黄学艳
童辉
左君
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团有限公司
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Publication of WO2020200117A1 publication Critical patent/WO2020200117A1/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
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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 disclosure relates to the field of communication technology, and in particular to a random access method, an indication method, network equipment and a terminal.
  • the terminal sends an uplink signal containing a preamble sequence (i.e., Preamble) on the resources of the Physical Random Access Channel (PRACH), which is called MSG 1; the terminal receives the Random Access Response (Random Access Response, sent by the base station).
  • RAR Random Access Response
  • MSG2 the terminal sends uplink data on the uplink time-frequency resources indicated by RAR, called MSG3; the terminal receives downlink data sent by the base station side, and the downlink data contains contention resolution related information, called MSG4.
  • MSG4 contention resolution related information
  • the NR R16 standard discusses the introduction of a 2-step RACH process.
  • the 2-step RACH combines MSG 1 and MSG 3 in the original 4-step RACH in one step, called MSG A; MSG 2 and MSG 4 is sent in one step and is called MSG B.
  • the base station When the Preamble transmission is successful but the PUSCH transmission is unsuccessful, the base station will not send MSG B to the terminal. In this case, the terminal will re-initiate the random access procedure, thereby increasing the random access delay.
  • the location of the target control resource in the 2-step RACH cannot be well determined, so that it cannot be guaranteed that the terminal can successfully receive the random access response message.
  • the embodiments of the present disclosure provide a random access method, an indication method, network equipment and a terminal to solve the problem that when the Preamble transmission is successful but the PUSCH transmission is unsuccessful, the terminal will re-initiate the random access procedure to the base station to increase the random access The problem of access delay. Further, the timing of receiving the random access response message is determined, which increases the reliability of successful reception by the terminal.
  • the embodiments of the present disclosure provide a random access method for network equipment, and the random access method includes:
  • a random access response message is sent, and the content of the random access response message is related to the detection result of the detection operation.
  • embodiments of the present disclosure provide a random access method for a terminal, including:
  • the user behavior is determined according to the content of the random access response message.
  • embodiments of the present disclosure provide an indication method for network equipment, and the indication method includes:
  • the type of the random access response message is indicated in an explicit or implicit manner.
  • embodiments of the present disclosure provide an indication method for use in a terminal, and the indication method includes:
  • the type of the random access response message is determined, and the type of the random access response message is indicated by the network device in an explicit or implicit manner.
  • the embodiments of the present disclosure provide a random access method for a terminal, including:
  • Sending a message including: random access pilot and uplink data; the uplink data is sent at the PUSCH potential transmission opportunity;
  • the terminal detects the random access response message in a time window, and the starting position of the time window is: the first symbol of the target control resource set;
  • the target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the first symbol of the target control resource set and the last symbol of the PUSCH occurrence are separated by X symbols, and the X Is a positive integer.
  • the DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the type of the random access response message;
  • the MAC CE in the MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the type of the random access response message;
  • the type of the random access response message is indicated by the scrambling sequence used to schedule the DCI of the random access response message.
  • embodiments of the present disclosure provide a network device, including a processor and a transceiver,
  • the processor is configured to perform detection operations, and detect random access pilots and uplink shared channels;
  • the transceiver is configured to send a random access response message, and the content of the random access response message is related to the detection result of the detection operation.
  • an embodiment of the present disclosure provides a terminal including a processor and a transceiver;
  • the transceiver is used to send messages, and the messages include random access pilots and uplink data;
  • the processor is configured to detect a random access response message; in the case of detecting a random access response message, determine a user behavior according to the content of the random access response message.
  • embodiments of the present disclosure provide a network device, and the network device includes:
  • the indication module is used to indicate the type of random access response message in an explicit or implicit manner.
  • an embodiment of the present disclosure provides a terminal, and the terminal includes:
  • the determining module is used to determine the type of the random access response message, the type of the random access response message being indicated by the network device in an explicit or implicit manner.
  • an embodiment of the present disclosure provides a terminal, the terminal processor and the transceiver:
  • the transceiver is used to send a message, and the message includes: random access pilot and uplink data; the uplink data is sent at a PUSCH potential sending opportunity;
  • the processor is used by the terminal to detect a random access response message in a time window, and the starting position of the time window is: the first symbol of the target control resource set;
  • the target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the first symbol of the target control resource set and the last symbol of the PUSCH occurrence are separated by X symbols, and the X Is a positive integer.
  • an embodiment of the present disclosure provides a network device, including a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When implementing the steps in the random access method described in the first aspect.
  • an embodiment of the present disclosure provides a terminal, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor.
  • a terminal including a processor, a memory, and a computer program stored on the memory and capable of running on the processor.
  • the computer program is executed by the processor, The steps in the random access method as described in the second aspect are implemented.
  • the embodiments of the present disclosure provide a network device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, the computer program being executed by the processor When realizing the steps in the indication method described in the third aspect.
  • the embodiments of the present disclosure provide a terminal including a processor, a memory, and a computer program stored on the memory and capable of running on the processor.
  • the computer program is executed by the processor, The steps in the indicating method as described in the fourth aspect are implemented.
  • embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the random access as described in the first aspect is implemented. Steps into the method.
  • embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the random access as described in the second aspect is implemented. Steps into the method.
  • embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the instruction method as described in the first aspect is implemented Steps in.
  • embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the instruction method as described in the second aspect is implemented Steps in.
  • a detection operation is performed to detect a random access pilot and an uplink shared channel; a random access response message is sent, and the content of the random access response message is related to the detection result of the detection operation.
  • the network device can determine the content of the random access response message according to the detection result of the random access pilot and the uplink shared channel, so as to inform the terminal of the corresponding behavior flow, and effectively reduce the random access delay. Further, by using the specific time slot of the PUSCH occurrence in the 2-step RACH as a reference, the problem that the potential first target control resource set of the random access response message is before the PUSCH occurrence is reasonably avoided.
  • Fig. 1 is a flowchart of a random access method provided by an embodiment of the present disclosure
  • Figures 2a and 2b are schematic diagrams of MAC payload and MAC sub-header respectively;
  • FIG. 3 is a flowchart of another random access method provided by an embodiment of the present disclosure.
  • FIG. 4 is a flowchart of an indication method provided by an embodiment of the present disclosure.
  • FIG. 5 is a flowchart of another indication method provided by an embodiment of the present disclosure.
  • FIG. 6 is a flowchart of yet another random access method provided by an embodiment of the present disclosure.
  • Figure 7 is a structural diagram of a network device provided by an embodiment of the present disclosure.
  • FIG. 8 is a structural diagram of another network device provided by an embodiment of the present disclosure.
  • FIG. 9 is a structural diagram of a terminal provided by an embodiment of the present disclosure.
  • FIG. 10 is a structural diagram of another terminal provided by an embodiment of the present disclosure.
  • FIG. 11 is a structural diagram of another network device provided by an embodiment of the present disclosure.
  • FIG. 12 is a diagram of another terminal structure provided by an embodiment of the present disclosure.
  • Fig. 1 is a flowchart of a random access method provided by an embodiment of the present disclosure, which is applied to a network device. As shown in Fig. 1, the method includes the following steps:
  • Step 101 Perform a detection operation to detect random access pilots and uplink shared channels.
  • the random access pilot can be understood as a preamble sequence (ie Preamble).
  • the network equipment detects the random access pilot and uplink shared channel.
  • the detection results include: none of the random access pilot and uplink shared channel is detected; the random access pilot and the uplink shared channel are detected at the same time; the random access is detected Into the pilot, but did not detect the uplink shared information.
  • the detection of the uplink shared channel by the network equipment can be understood as detecting the uplink data transmitted on the uplink shared channel, and the uplink data is sent by the terminal.
  • a network device can be understood as a base station, and a terminal can be understood as a user equipment (UE).
  • UE user equipment
  • Step 102 Send a random access response message, where the content of the random access response message is related to the detection result of the detection operation.
  • the network device sends a random access response message to the terminal according to the detection result.
  • the detection result is different, and the content of the random access response message is different.
  • the terminal can be informed of the corresponding behavior flow, so that the terminal can perform corresponding user behaviors according to different random access response messages sent by the network device, and the random access delay of the terminal can be reduced.
  • a detection operation is performed to detect a random access pilot and an uplink shared channel; a random access response message is sent, and the content of the random access response message is related to the detection result of the detection operation.
  • the network device can determine the content of the random access response message according to the detection result of the random access pilot and the uplink shared channel, so as to inform the terminal of the corresponding behavior flow, and effectively reduce the random access delay.
  • Preamble and physical uplink shared channel are not successfully transmitted;
  • Preamble transmission is successful, PUSCH transmission is unsuccessful;
  • the detection result of the detection operation performed by the network device correspondingly includes the following Various situations:
  • Random access pilot and uplink shared channel are detected
  • the random access pilot and uplink shared channel are not detected.
  • the network device will perform different random access response message sending processing according to the detection result.
  • determining to send the random access response message is:
  • the MSG B in the 2-step random access procedure is sent;
  • the MSG 2 in the 4-step random access procedure is sent;
  • the random access response message is not sent.
  • the network device when the detection result is that the random access pilot and the uplink shared channel are detected, the network device considers that the terminal uses MSG A in the 2-step random access process for random access. Accordingly, the network device Send the MSG B in the 2-step random access procedure to the terminal.
  • the network equipment When the detection result is that only the random access pilot is detected but the uplink shared channel is not detected, the network equipment considers that the terminal uses MSG 1 in the 4-step random access process for random access. Accordingly, the network The device sends MSG 2 in the 4-step random access process to the terminal.
  • the terminal When the network equipment detects that only the random access pilot is detected but not the uplink shared channel, it is possible that the terminal only sends the random access pilot (random access pilot) according to the 4-step random access process.
  • the incoming pilot is the MSG 1) in the random access process.
  • the network device sends the MSG 2 in the 4-step random access process to the terminal according to the 4-step random access process.
  • MSG B includes random access pilot and uplink shared channel
  • the uplink shared channel transmission is unsuccessful, causing the network equipment to only detect the random access pilot.
  • the network device sends MSG 2 in the 4-step random access process to the terminal according to the 4-step random access process, which can inform the terminal to proceed with the next step in the 4-step random access process to prevent the terminal from not receiving
  • the random access procedure is initiated again to effectively reduce the random access delay.
  • the above-mentioned 2-step random access process reverts to the 4-step random access process.
  • the network device Even if the network device does not successfully demodulate the PUSCH, it can still send a random access response message to the terminal , So that the terminal continues to access processing according to the 4-step random access procedure.
  • the network device When the detection result is that the random access pilot and the uplink shared channel are not detected, the network device does not send a random access response message. At this time, the terminal does not receive the random access response message and can initiate the random access procedure again.
  • three UEs perform a 2-step random access process: UE1 sends MSG A1 (i.e. Preamble1 and PUSCH1) to the base station; UE2 sends MSG A2 (i.e. Preamble2 and PUSCH2) to the base station, and UE3 sends MSG A3 (i.e. Preamble3 and PUSCH3) to the base station. );
  • MSG A1 i.e. Preamble1 and PUSCH1
  • UE2 sends MSG A2 (i.e. Preamble2 and PUSCH2) to the base station
  • UE3 sends MSG A3 (i.e. Preamble3 and PUSCH3) to the base station.
  • the Preambles sent by the three UEs to the base station are all different. All three UEs simultaneously support a 4-step random access process and a 2-step random access process.
  • the base station performs Preamble detection and corresponding PUSCH detection at random access occasions (RACH Occasion, RO). For UE1, the base station did not detect Preamble1 and PUSCH1; for UE2, the base station detected both Preamble2 and PUSCH2; for UE3, the base station detected Preamble3 but not PUSCH3;
  • the base station will not send data to UE1 (that is, it will not send random access response messages); the base station will send MSG B (used in the 2-step random access process) to UE2; the base station will send MSG to UE3 2 (for the 4-step random access procedure).
  • the base station can still send MSG 1 to UE3 according to the 4-step random access process (that is, the 2-step random access process falls back to The 4-step random access process) informs the terminal of the corresponding behavior process to prevent UE3 from initiating the random access process again, which can effectively reduce the random access delay.
  • step 101 before performing a detection operation to detect random access pilots and uplink shared channels, the method further includes:
  • the terminal of the first type is a terminal that supports a 4-step random access procedure
  • the second type of terminal is a terminal that supports a 2-step random access procedure.
  • different terminals can share random access pilots, that is, the random access pilot set includes one or more random access pilots, the first type of terminal and the second type of terminal
  • the random access pilots used by each belong to the same random access pilot set.
  • the time-frequency resources sent by each random access pilot in the random access pilot set can be shared.
  • the first type of terminal is a terminal that supports a 4-step random access process
  • the second type of terminal is a terminal that supports a 2-step random access process.
  • the network device can support a 4-step random access process and a 2-step random access process at the same time.
  • the terminal of the first type sends Preamble1 to the network device, and the terminal of the second type sends MSG A (MSG A includes Preamble2 and PUSCH) to the network device.
  • MSG A includes Preamble2 and PUSCH
  • the network device After detecting Preamble1, the network device sends MSG 2 in the 4-step random access procedure to the terminal of the first type.
  • MSG A After detecting MSG A, the network device sends the MSG 2 in the 2-step random access procedure to the terminal of the second type.
  • MSG B inform the terminal of the corresponding behavior flow.
  • the system is configured with both 2-step RACH users (in this disclosure, users can be understood as terminals) and 4-step RACH users, where the time-frequency resources sent by the preamble in 2-step RACH and 4-step RACH can be shared ;
  • Rel-15 UE adopts 4-RACH, the new function UE can choose 4-step RACH or 2-step RACH according to the configuration.
  • UE1 performs 4-step RACH and sends Preamble1
  • UE2 performs two-step RACH, and simultaneously sends Preamble2 and PUSCH2
  • UE3 performs 2-step RACH and simultaneously sends Preamble3 and PUSCH3; the preambles sent by the three users are all different.
  • the base station performs Preamble detection and corresponding PUSCH detection. For UE1, the base station detects Preamble1; for UE2, the base station detects both Preamble2 and PUSCH2; for UE3, the base station detects Preamble3 but not PUSCH3.
  • the base station For UE1, the base station sends the corresponding MSG 2 according to the 4-step RACH process; for UE2, the base station sends the corresponding MSG B according to the 2-step RACH process; for UE3, the base station sends the corresponding MSG according to the 4-step RACH process MSG 2.
  • step 101 after performing a detection operation to detect random access pilots and uplink shared channels, the method further includes:
  • the type of the random access response message is indicated in an explicit or implicit manner.
  • the type of random access response message can be understood as whether the response of the network device is MSG 2 of the 4-step random access process or MSG B of the 2-step random access process.
  • the type of the random access response message indicated in an explicit manner is specifically:
  • Carrying indication information through DCI where the indication information is used to indicate the type of the random access response message, and the DCI is used to schedule the random access response message;
  • the MAC CE carries indication information, the indication information is used to indicate the type of the random access response message, and the MAC CE belongs to the MAC PDU that carries the random access response message.
  • DCI Downlink Control Information
  • MAC Media Access Control
  • CE Control Element
  • PDU Protocol Data Unit
  • Carrying the indication information through the DCI specifically includes: carrying the indication information through the response message type indication field set in the DCI.
  • the embodiment of the present disclosure also provides a way of carrying indication information through MAC CE, specifically: carrying the indication information through the first bit of the MAC payload part of the MAC CE.
  • the first bit of the MAC payload (that is, MAC payload) in the MAC CE in MSG 2 is the reserved bit R. Therefore, the reserved bits in the related technology can be used to indicate whether the response of the network device is MSG 2 of 4-step RACH (ie 4-step random access process) or MSG of 2-step RACH (ie 2-step random access process) B .
  • the MAC subheader ie, the MAC subheader, as shown in Figure 2b
  • the specific MAC payload is different.
  • the 2-step RACH process is rolled back to the 4-step RACH process, and the MAC CE design has additional functions to ensure the sharing of the preamble resources of the 2-step RACH and 4-step RACH.
  • the DCI or MAC CE indicates whether the message sent is a 4-step RACH MSG 2 (RAR) or a 2-step RACH MSG B, which enables the terminal to detect the downlink control channel only based on a radio network temporary identification (Radio Network Temporary). Identity, RNTI) for decoding, the design complexity is low, and it is easy to implement.
  • RAR 4-step RACH MSG 2
  • 2-step RACH MSG B which enables the terminal to detect the downlink control channel only based on a radio network temporary identification (Radio Network Temporary). Identity, RNTI) for decoding, the design complexity is low, and it is easy to implement.
  • RNTI Radio Network Temporary
  • the embodiment of the present disclosure also provides a way to indicate the type of the random access response message in an implicit way, specifically:
  • the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message.
  • the scrambling sequence of the DCI used to schedule the random access response message and the type of the random access response message, and the scrambling sequence of the DCI is different, and the type of the random access response message is different.
  • the type of random access response message can be determined according to the scrambling sequence of the DCI. For example, when the scrambling sequence of DCI is the first sequence, the corresponding random access response message type is MSG 2 of the 4-step random access process; when the scrambling sequence of DCI is the second sequence, the corresponding random access The response message type is MSG B of the 2-step random access process.
  • the network device uses the first sequence in the DCI scrambling sequence, it indicates that the random access response message type is MSG2 of the 4-step random access process;
  • the network device adopts the second sequence in the scrambling sequence of the DCI, it indicates that the random access response message type is MSG B of the 2-step random access process.
  • FIG. 3 is another flowchart of a random access method provided by an embodiment of the present disclosure, which is applied to a terminal. As shown in FIG. 3, the method includes the following steps:
  • Step 301 Send a message, where the message includes random access pilots and uplink data.
  • the random access pilot can be understood as a preamble sequence (ie Preamble).
  • the terminal sends random access pilots and uplink data to the network equipment. Uplink data is transmitted through the uplink shared channel.
  • a network device can be understood as a base station, and a terminal can be understood as a UE.
  • Step 302 Detect the random access response message.
  • the random access response message is sent by the network device.
  • the network device detects the random access pilot and uplink data sent by the terminal, determines whether to send a random access response message to the terminal, or determines the content of the random access response message sent to the terminal.
  • Step 303 When the random access response message is detected, determine the user behavior according to the content of the random access response message.
  • the terminal determines the behavior of the terminal (that is, the user) according to the content of the random access response message.
  • the content of the random access response message is different, and the behavior of the terminal is different.
  • a message is sent, and the message includes a random access pilot and uplink data; a random access response message is detected; when a random access response message is detected, a random access response message is detected according to the random access response message.
  • the terminal determines the behavior process corresponding to the terminal according to the content of the received random access response message, which can avoid the terminal from repeatedly initiating the random access process and effectively reduce the random access delay of the terminal.
  • the content of the random access response message is related to the detection result;
  • the detection result is the result obtained by the network device detecting the random access pilot and the uplink shared channel.
  • the network device detects the random access pilot and uplink data sent by the terminal, and then determines the random access response message according to the detection result.
  • the content of the random access response message is related to the detection result of the network device.
  • the network device sends a random access response message to the terminal according to the detection result.
  • the detection result is different, and the content of the random access response message is different. In this way, the terminal can be notified of the corresponding behavior flow, avoiding the terminal from repeatedly initiating random access procedures to the network equipment, and reducing the random access delay of the terminal.
  • the random access response message is specifically sent as:
  • the random access response message is MSG B in the 2-step random access procedure
  • the random access response message is MSG 2 in the 4-step random access procedure.
  • the specific type of the random access response message determined in an explicit manner is:
  • the type of the random access response message is determined by the indication information carried by the MAC CE, and the MAC CE belongs to the MAC PDU that carries the random access response message.
  • determining the type of the random access response message through the indication information carried in the DCI specifically includes: determining the type of the random access response message through the response message type indication field in the DCI.
  • Determining the type of the random access response message through the indication information carried by the MAC CE specifically includes: determining the type of the random access response message through the indication information carried in the first bit of the MAC payload part of the MAC CE.
  • the type of random access response message is determined implicitly as follows:
  • the random access response message type is implicitly determined through the scrambling sequence used to schedule the DCI of the random access response message.
  • the network device adopts a display method and an implicit method to determine the type of the random access response message. For details, please refer to the related description of the network device part in the embodiment shown in FIG. 1, which is not repeated here.
  • the terminal sends the Preamble and PUSCH to the network device.
  • the network device When the network device only detects the Preamble, the network device sends the MSG 2 in the 4-step random access procedure to the terminal, and the terminal performs the next step according to the MSG 2.
  • the terminal initiates a random access process to the network device according to MSG A in the 2-step random access process.
  • the network device When the network device only detects the preamble, the network device responds according to the 4-step random access process, that is, The terminal sends MSG2 in the 4-step random access process, so that the terminal reverts from the 2-step random access process to the 4-step random access process.
  • the UE can perform corresponding processing according to different random access response messages sent by the network device, and the UE can recognize the type of the random access response message, which needs to be based on the display or implicit instruction of the network device.
  • the disclosed embodiment also provides an indication method to indicate the type of the random access response message.
  • FIG. 4 is a flowchart of an indication method provided by an embodiment of the present disclosure, which is applied to a network device. As shown in FIG. 4, the method includes the following steps:
  • Step 401 Indicate the type of the random access response message in an explicit or implicit manner.
  • the terminal initiates a random access procedure to the network device.
  • the random access procedure may be MSG 1 in the 4-step random access procedure, or MSG A in the 2-step random access procedure.
  • the type of the random access response message is used to indicate whether the random access response message is MSG 2 in the 4-step random access process or MSG B in the 2-step random access process.
  • the type of the random access response message can be indicated in an explicit or implicit manner, so as to inform the terminal of the corresponding behavior process.
  • the DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the Type of random access response message;
  • the MAC CE in the MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the random Type of access response message;
  • the type of the random access response message is implicitly indicated by the network device
  • the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message .
  • the indication information is carried by the response message type indication field set in the DCI;
  • the first bit of the MAC payload part of the MAC CE carries the indication information.
  • the network device adopts a display method and an implicit method to determine the type of the random access response message. For details, please refer to the related description of the network device part in the embodiment shown in FIG. 1, which is not repeated here.
  • the random access response message is MSG B in a 2-step random access procedure; or, the random access response message is MSG 2 in a 4-step random access procedure.
  • the network device when the network device detects the random access pilot and the uplink shared channel, it considers that the terminal uses MSG A in the 2-step random access process for random access, and accordingly, the network device sends the 2-step MSG B in the random access procedure.
  • the network device When the network device detects only the random access pilot and does not detect the uplink shared channel, it is considered that the terminal uses MSG 1 in the 4-step random access process for random access, and accordingly, the network device sends 4 to the terminal MSG 2 in the random access procedure.
  • the terminal When the detection result of the network device is that only the random access pilot is detected but the uplink shared channel is not detected, it is possible that the terminal only sends the random access pilot (random access pilot) according to the 4-step random access process.
  • the pilot is the MSG 1) in the random access process.
  • the network device sends the MSG 2 in the 4-step random access process to the terminal according to the 4-step random access process.
  • MSG B includes random access pilot and uplink shared channel
  • the network equipment follows 4-step random access process, sending MSG 2 in the 4-step random access process to the terminal, which can inform the terminal to proceed with the next step according to the 4-step random access process to prevent the terminal from receiving the random access response message , Initiate the random access procedure again to effectively reduce the random access delay.
  • the above-mentioned 2-step random access process reverts to the 4-step random access process.
  • the terminal using the 2-step random access process even if the network device does not successfully demodulate the PUSCH, it can still send a random access response message to the terminal , So that the terminal performs the next step according to the 4-step random access procedure.
  • FIG. 5 is a flowchart of an indication method provided by an embodiment of the present disclosure, which is applied to a terminal. As shown in FIG. 5, the method includes the following steps:
  • Step 501 Determine the type of the random access response message, where the type of the random access response message is indicated by the network device in an explicit or implicit manner.
  • the terminal initiates a random access procedure to the network device.
  • the random access procedure may be MSG 1 in the 4-step random access procedure, or MSG A in the 2-step random access procedure.
  • the type of the random access response message is used to indicate whether the random access response message is MSG 2 in the 4-step random access process or MSG B in the 2-step random access process.
  • the network device can indicate the type of the random access response message in an explicit or implicit manner, so as to inform the terminal of the corresponding behavior Process.
  • the DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the Type of random access response message;
  • the MAC CE in the MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the random Type of access response message;
  • the type of the random access response message is implicitly indicated by the network device
  • the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message .
  • the indication information is carried by the response message type indication field set in the DCI;
  • the first bit of the MAC payload part of the MAC CE carries the indication information.
  • the network device adopts a display method and an implicit method to determine the type of the random access response message. For details, please refer to the related description of the network device part in the embodiment shown in FIG. 1, which is not repeated here.
  • the random access response message is MSG B in a 2-step random access procedure; or, the random access response message is MSG 2 in a 4-step random access procedure.
  • the network device when the network device detects the random access pilot and the uplink shared channel, it considers that the terminal uses MSG A in the 2-step random access process for random access, and accordingly, the network device sends the 2-step MSG B in the random access procedure.
  • the network device When the network device detects only the random access pilot and does not detect the uplink shared channel, it is considered that the terminal uses MSG 1 in the 4-step random access process for random access, and accordingly, the network device sends 4 to the terminal MSG 2 in the random access procedure.
  • the terminal When the detection result of the network device is that only the random access pilot is detected but the uplink shared channel is not detected, it is possible that the terminal only sends the random access pilot (random access pilot) according to the 4-step random access process.
  • the pilot is the MSG 1) in the random access process.
  • the network device sends the MSG 2 in the 4-step random access process to the terminal according to the 4-step random access process.
  • MSG B includes random access pilot and uplink shared channel
  • the network equipment follows 4-step random access process, sending MSG 2 in the 4-step random access process to the terminal, which can inform the terminal to proceed with the next step according to the 4-step random access process to prevent the terminal from receiving the random access response message , Initiate the random access procedure again to effectively reduce the random access delay.
  • the above-mentioned 2-step random access process reverts to the 4-step random access process.
  • the terminal using the 2-step random access process even if the network device does not successfully demodulate the PUSCH, it can still send a random access response message to the terminal , So that the terminal performs the next step according to the 4-step random access procedure.
  • FIG. 6 is a flowchart of a random access method provided by an embodiment of the present disclosure, which is applied to a terminal, and the method includes:
  • Step 601 Send a message, the message includes: random access pilot and uplink data; the uplink data is sent at a PUSCH potential transmission opportunity.
  • the random access pilot can be understood as a preamble sequence (ie Preamble).
  • the terminal sends random access pilots and uplink data to the network equipment.
  • the uplink data is transmitted through the uplink shared channel and sent at the PUSCH potential transmission opportunity.
  • Step 602 The terminal detects a random access response message in a time window, where the start position of the time window is: the first symbol of the target control resource set;
  • the target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the first symbol of the target control resource set and the last symbol of the PUSCH occurrence are separated by X symbols, and the X Is a positive integer.
  • the system information broadcasts the transmission parameters of the 2-step random access process
  • three UEs perform the 2-step random access process: UE1 sends MSG A1 (ie Preamble1 and PUSCH1) to the base station; UE2 sends MSG A2 (ie Preamble2 and PUSCH2) to the base station ), UE3 sends MSG A3 (that is, Preamble3 and PUSCH3) to the base station; the three UEs send different Preambles to the base station. All three UEs simultaneously support a 4-step random access process and a 2-step random access process;
  • the base station performs Preamble detection and corresponding PUSCH detection at random access occasions (RACH Occasion, RO). For UE1, the base station did not detect Preamble1 and PUSCH1; for UE2, the base station detected both Preamble2 and PUSCH2; for UE3, the base station detected Preamble3 but not PUSCH3;
  • the base station does not send data to UE1 (that is, it does not send random access response messages); the base station sends MSG B to UE2 (for 2-step random access procedures); the base station sends MSG 2 (for 4-step random access procedures) to UE3 ;
  • the three UEs monitor the Physical Downlink Control Channel (PDCCH) within the time window of the corresponding random access response message (ie, RAR monitoring window).
  • the start position of the time window of the three UEs is the first symbol of the first control resource set after PUSCH transmission is completed, or the first symbol of the first control resource set after PUSCH transmission is completed X symbols (ie symbols)
  • the first symbol, X is a positive integer.
  • the starting position of the time window is: the first symbol of the target control resource set; the target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the target There is an interval of X symbols between the first symbol of the control resource set and the last symbol of the PUSCH occurrence, where X is a positive integer.
  • UE1 does not detect the PDCCH, adjusts the corresponding transmission parameters, and resends MSG A on the subsequent RACH occasion;
  • UE2 detects the PDCCH, and the response indication information in the DCI indicates that the scheduling message is MSG B (ie, random access response message Using the 2-step random access process), UE2 detects MSG B, and the 2-step random access process ends;
  • UE3 detects PDCCH, and the corresponding indication information in the DCI indicates that the scheduled message is MSG 2 (that is, the random access response message uses 4-step random access process), UE3 performs the subsequent 4-step random access process.
  • the system is configured with 2-step RACH users and 4-step RACH users at the same time, where the time-frequency resources sent by the preamble in 2-step RACH and 4-step RACH can be shared;
  • Rel-15UE adopts 4-RACH, the new function UE can choose 4-step RACH or 2-step RACH according to the configuration;
  • UE1 performs 4-step RACH and sends Preamble1
  • UE2 performs two-step RACH and simultaneously sends Preamble2 and PUSCH2
  • UE3 performs 2-step RACH and simultaneously sends Preamble3 and PUSCH3; the preambles sent by the three users are all different;
  • the base station performs Preamble detection and corresponding PUSCH detection. For UE1, the base station detects Preamble1; for UE2, the base station detects both Preamble2 and PUSCH2; for UE3, the base station detects Preamble3 but not PUSCH3;
  • the base station sends the corresponding MSG 2 according to the 4-step RACH process; for UE2, the base station sends the corresponding MSG B according to the 2-step RACH process; for UE3, the base station sends the corresponding MSG according to the 4-step RACH process MSG 2;
  • the three UEs monitor the downlink control channel within the time window of the corresponding random access response message.
  • the start position of the user (UE1) time window of the 4-step RACH process is the first symbol of the first control resource set after the preamble transmission is completed; the start of the time window of the 2-step RACH user (UE2 and UE3) The position is the first symbol of the first control resource set after PUSCH transmission is completed, or the first symbol of the first control resource set after PUSCH transmission is completed X symbols (ie symbols), and X is a positive integer;
  • UE1 detects PDCCH and msg2, and performs the subsequent 4-step RACH process;
  • UE2 detects PDCCH, the MAC-CE in the demodulated response message indicates that the response is msgB, and the 2-step RACH process ends;
  • UE3 detects PDCCH, the MAC-CE in the demodulated response message indicates that the response is msg2 (4-step RACH), and the user performs the subsequent 4-step RACH process.
  • a message is sent, and the message includes: random access pilot and uplink data; the uplink data is sent at the PUSCH potential sending opportunity; the terminal detects the random access response message in the time window, and the time window
  • the starting position is: the first symbol of the target control resource set; the target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the first symbol of the target control resource set is the same as There are X symbols between the last symbol of the PUSCH occurrence, and the X is a positive integer.
  • the terminal can detect the random access response message within the time window to perform the next step processing according to the detected random access response message.
  • the random access method further includes:
  • the user behavior is determined according to the content of the random access response message.
  • step 303 is consistent with the content recorded in step 303.
  • the content of the random access response message is related to the detection result
  • the detection result is the result obtained by the network equipment detecting the random access pilot and the uplink shared channel.
  • the random access response message is MSG B in the 2-step random access procedure
  • the random access response message is MSG 2 in the 4-step random access procedure.
  • the random access response method further includes:
  • the type of the random access response message is determined in an explicit or implicit manner.
  • the specific type of the random access response message determined in an explicit manner is:
  • the type of the random access response message is determined by the indication information carried by the MAC CE, and the MAC CE belongs to the MAC PDU that carries the random access response message.
  • determining the type of the random access response message through the indication information carried in the DCI specifically includes: determining the type of the random access response message through the response message type indication field in the DCI.
  • Determining the type of the random access response message through the indication information carried by the MAC CE specifically includes: determining the type of the random access response message through the indication information carried in the first bit of the MAC payload part of the MAC-CE.
  • determining the type of the random access response message in an implicit manner is specifically:
  • the random access response message type is implicitly determined through the scrambling sequence used to schedule the DCI of the random access response message.
  • FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present disclosure. As shown in FIG. 7, the network device 700 includes:
  • the detection module 701 is configured to perform detection operations and detect random access pilots and uplink shared channels;
  • the sending module 702 is configured to send a random access response message, and the content of the random access response message is related to the detection result of the detection operation.
  • the sending the random access response message is specifically:
  • the MSG B in the 2-step random access procedure is sent;
  • the MSG 2 in the 4-step random access procedure is sent;
  • the random access response message is not sent.
  • the network module also includes:
  • An allocation module configured to allocate the same random access pilot set to the first type of terminal and the second type of terminal;
  • the terminal of the first type is a terminal that supports a 4-step random access procedure
  • the second type of terminal is a terminal that supports a 2-step random access procedure.
  • the network module also includes:
  • the indication module is used to indicate the type of random access response message in an explicit or implicit manner.
  • Carrying indication information through DCI where the indication information is used to indicate the type of the random access response message, and the DCI is used to schedule the random access response message;
  • the MAC CE carries indication information, the indication information is used to indicate the type of the random access response message, and the MAC CE belongs to the MAC PDU that carries the random access response message.
  • carrying the indication information through the DCI specifically includes: carrying the indication information through the response message type indication field set in the DCI.
  • carrying the indication information through the MAC CE is specifically: carrying the indication information through the first bit of the MAC payload part of the MAC CE.
  • the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message.
  • the network device 700 can implement the various processes implemented by the network device in the method embodiment shown in FIG. 1. To avoid repetition, details are not described herein again.
  • the network device 700 of the embodiment of the present disclosure performs a detection operation, detects a random access pilot and an uplink shared channel; sends a random access response message, the content of the random access response message is related to the detection result of the detection operation.
  • the network device can determine the content of the random access response message according to the detection result of the random access pilot and the uplink shared channel, so as to inform the terminal of the corresponding behavior flow, and effectively reduce the random access delay.
  • an embodiment of the present disclosure also provides a network device, including a bus 1001, a transceiver 1002, an antenna 1003, a bus interface 1004, a processor 1005, and a memory 1006.
  • the processor 1005 is configured to perform detection operations, and detect random access pilots and uplink shared channels;
  • the transceiver 1002 is configured to send a random access response message, and the content of the random access response message is related to the detection result of the detection operation.
  • transceiver is specifically used for:
  • the MSG B in the 2-step random access procedure is sent;
  • the MSG 2 in the 4-step random access procedure is sent;
  • the random access response message is not sent.
  • processor is also used for:
  • the terminal of the first type is a terminal that supports a 4-step random access procedure
  • the second type of terminal is a terminal that supports a 2-step random access procedure.
  • processor is also used for:
  • the type of the random access response message is indicated in an explicit or implicit manner.
  • processor is also used for:
  • Carrying indication information through DCI where the indication information is used to indicate the type of the random access response message, and the DCI is used to schedule the random access response message;
  • the MAC CE carries indication information, the indication information is used to indicate the type of the random access response message, and the MAC CE belongs to the MAC PDU that carries the random access response message.
  • the processor is further configured to: carry the indication information through a response message type indication field set in the DCI.
  • the processor is further configured to carry the indication information through the first bit of the MAC payload part of the MAC CE.
  • processor is also used for:
  • the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message.
  • the network device further includes: a computer program stored on the memory 1006 and running on the processor 1005. Wherein, when the computer program is executed by the processor 1005, the following steps can be implemented:
  • a random access response message is sent, and the content of the random access response message is related to the detection result of the detection operation.
  • the computer program when executed by the processor 1005, it is also used to send MSG B in the 2-step random access procedure when the detection result is that the random access pilot and the uplink shared channel are detected;
  • the MSG 2 in the 4-step random access procedure is sent;
  • the random access response message is not sent.
  • the terminal of the first type is a terminal that supports a 4-step random access procedure
  • the second type of terminal is a terminal that supports a 2-step random access procedure.
  • the type of the random access response message is indicated in an explicit or implicit manner.
  • Carrying indication information through DCI where the indication information is used to indicate the type of the random access response message, and the DCI is used to schedule the random access response message;
  • the MAC CE carries indication information, the indication information is used to indicate the type of the random access response message, and the MAC CE belongs to the MAC PDU that carries the random access response message.
  • the computer program when executed by the processor 1005, it is also used to: carry the indication information through the response message type indication field set in the DCI.
  • the computer program when executed by the processor 1005, it is also used to: carry the indication information through the first bit of the MAC payload part of the MAC CE.
  • the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message.
  • the network device can implement the various processes implemented by the network device in the method embodiment shown in FIG. 1. To avoid repetition, details are not described herein again.
  • the network device of the embodiment of the present disclosure performs a detection operation, detects a random access pilot and an uplink shared channel; sends a random access response message, the content of the random access response message is related to the detection result of the detection operation.
  • the network device can determine the content of the random access response message according to the detection result of the random access pilot and the uplink shared channel, so as to inform the terminal of the corresponding behavior flow, and effectively reduce the random access delay.
  • bus architecture (represented by bus 1001), bus 1001 can include any number of interconnected buses and bridges, bus 1001 will include one or more processors represented by processor 1005 and memory represented by memory 1006 The various circuits are linked together.
  • the bus 1001 can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface 1004 provides an interface between the bus 1001 and the transceiver 1002.
  • the transceiver 1002 may be one element or multiple elements, such as multiple receivers and transmitters, and provide a unit for communicating with various other devices on a transmission medium.
  • the data processed by the processor 1005 is transmitted on the wireless medium through the antenna 1003. Furthermore, the antenna 1003 also receives the data and transmits the data to the processor 1005.
  • the processor 1005 is responsible for managing the bus 1001 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 1006 may be used to store data used by the processor 1005 when performing operations.
  • the processor 1005 may be a CPU, ASIC, FPGA or CPLD.
  • an embodiment of the present disclosure further provides a network device, including a processor 1005, a memory 1006, a computer program stored on the memory 1006 and running on the processor 1005, and the computer program is executed by the processor 1005
  • a network device including a processor 1005, a memory 1006, a computer program stored on the memory 1006 and running on the processor 1005, and the computer program is executed by the processor 1005
  • each process of the random access method embodiment shown in FIG. 1 can be realized, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.
  • an embodiment of the present disclosure further provides a network device, including a processor 1005, a memory 1006, a computer program stored on the memory 1006 and running on the processor 1005, and the computer program is executed by the processor 1005
  • a network device including a processor 1005, a memory 1006, a computer program stored on the memory 1006 and running on the processor 1005, and the computer program is executed by the processor 1005
  • FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure.
  • a terminal 900 includes:
  • the sending module 901 is configured to send a message, and the message includes a random access pilot and uplink data;
  • the detection module 902 is used to detect random access response messages
  • the determining module 903 is configured to determine the user behavior according to the content of the random access response message when the random access response message is detected.
  • the content of the random access response message is related to the detection result
  • the detection result is the result obtained by the network equipment detecting the random access pilot and the uplink shared channel.
  • the random access response message is MSG B in the 2-step random access procedure
  • the random access response message is MSG 2 in the 4-step random access procedure.
  • the type of the random access response message is determined in an explicit manner or an implicit manner.
  • determining the type of the random access response message in an explicit manner is specifically:
  • the type of the random access response message is determined by the indication information carried by the MAC CE, and the MAC CE belongs to the MAC PDU that carries the random access response message.
  • the determining the type of the random access response message through the indication information carried in the DCI specifically includes: determining the type of the random access response message through the response message type indication field in the DCI.
  • determining the type of the random access response message through the indication information carried by the MAC CE specifically includes: determining the type of the random access response message through the indication information carried in the first bit of the MAC payload part of the MAC-CE Types of.
  • determining the type of the random access response message in an implicit manner is specifically:
  • the random access response message type is implicitly determined through the scrambling sequence used to schedule the DCI of the random access response message.
  • the terminal 900 can implement various processes implemented by the terminal in the method embodiment shown in FIG. 3, and to avoid repetition, details are not described herein again.
  • the terminal 900 of the embodiment of the present disclosure sends a message, the message includes a random access pilot and uplink data; detects a random access response message; in the case of detecting a random access response message, according to the random access response
  • the content of the message determines user behavior.
  • the terminal determines the behavior process corresponding to the terminal according to the content of the received random access response message, which can avoid the terminal from repeatedly initiating the random access process and effectively reduce the random access delay of the terminal.
  • the terminal 1100 includes but is not limited to: a transceiver unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, User input unit 1107, interface unit 1108, memory 1109, processor 1110, power supply 1111 and other components.
  • a transceiver unit 1101 includes but is not limited to: a transceiver unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, User input unit 1107, interface unit 1108, memory 1109, processor 1110, power supply 1111 and other components.
  • terminal structure shown in FIG. 10 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components.
  • terminals include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.
  • the transceiver unit 1101 sends a message, and the message includes a random access pilot and uplink data;
  • the processor 1110 is configured to detect a random access response message; when a random access response message is detected, determine a user behavior according to the content of the random access response message.
  • the content of the random access response message is related to the detection result
  • the detection result is the result obtained by the network equipment detecting the random access pilot and the uplink shared channel.
  • the random access response message is MSG B in the 2-step random access procedure
  • the random access response message is MSG 2 in the 4-step random access procedure.
  • the type of the random access response message is determined in an explicit or implicit manner.
  • determining the type of the random access response message in an explicit manner is specifically:
  • the type of the random access response message is determined by the indication information carried by the MAC CE, and the MAC CE belongs to the MAC PDU that carries the random access response message.
  • the determining the type of the random access response message through the indication information carried in the DCI specifically includes: determining the type of the random access response message through the response message type indication field in the DCI.
  • determining the type of the random access response message through the indication information carried by the MAC CE specifically includes: determining the type of the random access response message through the indication information carried in the first bit of the MAC payload part of the MAC-CE Types of.
  • determining the type of the random access response message in an implicit manner is specifically:
  • the random access response message type is implicitly determined through the scrambling sequence used to schedule the DCI of the random access response message.
  • the terminal 1100 can implement each process implemented by the terminal in the method embodiment shown in FIG. 3. To avoid repetition, details are not described herein again.
  • the terminal 1100 in the embodiment of the present disclosure sends a message, the message includes a random access pilot and uplink data; detects a random access response message; in the case of detecting a random access response message, according to the random access response
  • the content of the message determines user behavior.
  • the terminal determines the behavior process corresponding to the terminal according to the content of the received random access response message, which can avoid the terminal from repeatedly initiating the random access process and effectively reduce the random access delay of the terminal.
  • the transceiver unit 1101 can be used for receiving and sending signals during the process of sending and receiving information or talking. Specifically, the downlink data from the base station is received and sent to the processor 1110 for processing; Uplink data is sent to the base station.
  • the transceiver unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the transceiver unit 1101 may also communicate with the network and other devices through a wireless communication system.
  • the terminal provides users with wireless broadband Internet access through the network module 1102, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 1103 may convert the audio data received by the transceiving unit 1101 or the network module 1102 or stored in the memory 1109 into audio signals and output them as sounds. Moreover, the audio output unit 1103 may also provide audio output related to a specific function performed by the terminal 1100 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 1103 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 1104 is used to receive audio or video signals.
  • the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042, and the graphics processor 11041 is configured to respond to still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
  • the processed image frame can be displayed on the display unit 1106.
  • the image frame processed by the graphics processor 11041 may be stored in the memory 1109 (or other storage medium) or sent via the transceiver unit 1101 or the network module 1102.
  • the microphone 11042 can receive sound, and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to a mobile communication base station via the transceiver unit 1101 for output in the case of a telephone call mode.
  • the terminal 1100 further includes at least one sensor 1105, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 11061 according to the brightness of the ambient light.
  • the proximity sensor can close the display panel 11061 and/or when the terminal 1100 is moved to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal posture (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; sensor 1105 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be repeated here.
  • the display unit 1106 is used to display information input by the user or information provided to the user.
  • the display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), etc.
  • LCD Liquid Crystal Display
  • OLED Organic Light-Emitting Diode
  • the user input unit 1107 can be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the terminal.
  • the user input unit 1107 includes a touch panel 11071 and other input devices 11072.
  • the touch panel 11071 also known as a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 11071 or near the touch panel 11071. operating).
  • the touch panel 11071 may include two parts, a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it
  • the processor 1110 receives and executes the command sent by the processor 1110.
  • the touch panel 11071 can be realized by various types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 1107 may also include other input devices 11072.
  • other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 11071 can cover the display panel 11061.
  • the touch panel 11071 detects a touch operation on or near it, it is transmitted to the processor 1110 to determine the type of the touch event, and then the processor 1110 determines the type of the touch event.
  • the type of event provides corresponding visual output on the display panel 11061.
  • the touch panel 11071 and the display panel 11061 are used as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 11071 and the display panel 11061 may be integrated. Realize the input and output functions of the terminal, which are not limited here.
  • the interface unit 1108 is an interface for connecting an external device with the terminal 1100.
  • the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (input/output, I/O) port, video I/O port, headphone port, etc.
  • the interface unit 1108 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 1100 or may be used to communicate between the terminal 1100 and the external device. Transfer data between.
  • the memory 1109 can be used to store software programs and various data.
  • the memory 1109 may mainly include a program storage area and a data storage area.
  • the program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data (such as audio data, phone book, etc.) created by the use of mobile phones.
  • the memory 1109 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 1110 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal, and executes by running or executing software programs and/or modules stored in the memory 1109, and calling data stored in the memory 1109. Various functions of the terminal and processing data, so as to monitor the terminal as a whole.
  • the processor 1110 may include one or more processing units; optionally, the processor 1110 may integrate an application processor and a modem processor.
  • the application processor mainly processes the operating system, user interface, and application programs, etc.
  • the adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 1110.
  • the terminal 1100 may also include a power source 1111 (such as a battery) for supplying power to various components.
  • a power source 1111 such as a battery
  • the power source 1111 may be logically connected to the processor 1110 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.
  • the terminal 1100 includes some functional modules not shown, which will not be repeated here.
  • an embodiment of the present disclosure further provides a terminal, including a processor 1110, a memory 1109, a computer program stored on the memory 1109 and capable of running on the processor 1110, when the computer program is executed by the processor 1110
  • a terminal including a processor 1110, a memory 1109, a computer program stored on the memory 1109 and capable of running on the processor 1110, when the computer program is executed by the processor 1110
  • an embodiment of the present disclosure further provides a terminal, including a processor 1110, a memory 1109, a computer program stored on the memory 1109 and capable of running on the processor 1110, when the computer program is executed by the processor 1110
  • a terminal including a processor 1110, a memory 1109, a computer program stored on the memory 1109 and capable of running on the processor 1110, when the computer program is executed by the processor 1110
  • FIG. 11 is a schematic structural diagram of a network device provided by an embodiment of the disclosure. As shown in FIG. 11, the network device 1200 includes:
  • the indication module 1201 is used to indicate the type of the random access response message in an explicit or implicit manner.
  • the DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the random access response message.
  • Type of access response message
  • the MAC CE in the MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the random Type of access response message;
  • the type of the random access response message is implicitly indicated by the network device
  • the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message .
  • the indication information is carried by the response message type indication field set in the DCI;
  • the first bit of the MAC payload part of the MAC CE carries the indication information.
  • the random access response message is MSG B in a 2-step random access procedure; or, the random access response message is MSG 2 in a 4-step random access procedure.
  • the type of the random access response message is indicated in an explicit or implicit manner.
  • the explicit or implicit method indicates the type of the random access response message, so as to inform the terminal of the corresponding behavior flow.
  • FIG. 12 is a schematic structural diagram of a network device provided by an embodiment of the disclosure. As shown in FIG. 11, a terminal 1300 includes:
  • the determining module 1301 is configured to determine the type of the random access response message, the type of the random access response message being indicated by the network device in an explicit manner or an implicit manner.
  • the DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the random access response message.
  • Type of access response message
  • the MAC CE in the MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the random Type of access response message;
  • the type of the random access response message is implicitly indicated by the network device
  • the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message .
  • the indication information is carried by the response message type indication field set in the DCI;
  • the first bit of the MAC payload part of the MAC CE carries the indication information.
  • the random access response message is MSG B in a 2-step random access procedure; or, the random access response message is MSG 2 in a 4-step random access procedure.
  • the terminal 1300 in this embodiment determines the type of the random access response message, and the type of the random access response message is indicated by the network device in an explicit or implicit manner.
  • the network device can indicate the type of the random access response message in an explicit or implicit manner, so as to inform the terminal of the corresponding behavior Process.
  • the embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored.
  • a computer program is stored on which a computer program is stored.
  • the computer program is executed by a processor, each process of the random access method embodiment shown in FIG. 1 is implemented, And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the random access method embodiment shown in FIG. 3 is implemented. And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the embodiment of the present disclosure also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the embodiment of the present disclosure also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer-readable storage medium such as ROM, RAM, magnetic disk or optical disk, etc.
  • the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. ⁇
  • the technical solution of the present disclosure essentially or the part that contributes to the related technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ) Includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present disclosure.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • 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, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
  • the program can be stored in a computer readable storage medium. When executed, it may include the processes of the above-mentioned method embodiments.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
  • modules, units, and sub-units can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, used to implement Described functions in other electronic units or combinations thereof.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processor
  • DSP Device Digital Signal Processing Device
  • DSPD Digital Signal Processing Device
  • PLD Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present disclosure can be implemented through modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.

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

Abstract

La présente invention concerne un procédé d'accès aléatoire, un procédé d'indication, un dispositif de réseau et un terminal. Le procédé d'accès aléatoire comprend : la réalisation d'une opération de détection pour détecter une fréquence pilote d'accès aléatoire et un canal partagé de liaison montante ; et l'envoi d'un message de réponse d'accès aléatoire, le contenu du message de réponse d'accès aléatoire étant lié au résultat de détection de l'opération de détection.
PCT/CN2020/081825 2019-03-29 2020-03-27 Procédé d'accès aléatoire, procédé d'indication, dispositif de réseau et terminal WO2020200117A1 (fr)

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