WO2023220943A1 - 随机接入方法及装置 - Google Patents

随机接入方法及装置 Download PDF

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Publication number
WO2023220943A1
WO2023220943A1 PCT/CN2022/093408 CN2022093408W WO2023220943A1 WO 2023220943 A1 WO2023220943 A1 WO 2023220943A1 CN 2022093408 W CN2022093408 W CN 2022093408W WO 2023220943 A1 WO2023220943 A1 WO 2023220943A1
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Prior art keywords
random access
rnti
terminal device
opportunities
target
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PCT/CN2022/093408
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English (en)
French (fr)
Inventor
乔雪梅
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202280001650.0A priority Critical patent/CN117426134A/zh
Priority to PCT/CN2022/093408 priority patent/WO2023220943A1/zh
Publication of WO2023220943A1 publication Critical patent/WO2023220943A1/zh

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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

  • the present application relates to the field of communication technology, and in particular, to a random access method and device.
  • the terminal device can send the first random access message Msg1 (message 1) to the network device. After receiving the Msg1, the network device can send The terminal device sends the second random access message Msg2 (message 2).
  • RA-RNTI Random Access-Radio Network Temporary Identifier, Random Access Wireless Network Temporary Identifier
  • DCI format 1_0 Physical Downlink Control Channel, PDCCH, physical downlink control channel; Downlink Control Information, DCI, downlink control information; format, format) CRC (Cyclic Redundancy Check, cyclic redundancy check) ) to scramble. Therefore, only the terminal equipment that sends Msg1 in the time-frequency resource identified by RA-RNTI can correctly decode the DCI of this PDCCH.
  • the first embodiment of the present application proposes a random access method, which is executed by a terminal device.
  • the method includes:
  • the RA-RNTI is used to detect the second random access message or the physical downlink control channel PDCCH sent by the network device.
  • determining the random access wireless network temporary identity RA-RNTI of the terminal device according to one of the multiple random access opportunities includes:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • determining the random access wireless network temporary identity RA-RNTI of the terminal device according to one of the multiple random access opportunities includes:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • determining the random access wireless network temporary identity RA-RNTI of the terminal device according to one of the multiple random access opportunities includes:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • sequence numbers of the target random access opportunities in the two groups of multiple random access opportunities in adjacent system frames are different.
  • the second embodiment of the present application proposes a random access method, which is executed by a network device.
  • the method includes:
  • determining the random access wireless network temporary identity RA-RNTI of the terminal device according to one of the multiple random access opportunities includes:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • determining the random access wireless network temporary identity RA-RNTI of the terminal device according to one of the multiple random access opportunities includes:
  • determining the random access wireless network temporary identity RA-RNTI of the terminal device according to one of the multiple random access opportunities includes:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • sequence numbers of the target random access opportunities in the two groups of multiple random access opportunities in adjacent system frames are different.
  • the third embodiment of the present application provides a random access device.
  • the device is applied to terminal equipment.
  • the device includes:
  • a transceiver unit configured to repeatedly send the first random access message to the network device on multiple random access opportunities
  • a processing unit configured to determine the random access wireless network temporary identifier RA-RNTI of the terminal device according to one of the plurality of random access opportunities
  • the transceiver unit is also configured to use the RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network device.
  • processing unit is specifically used for:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • processing unit is specifically used for:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • processing unit is specifically used for:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • sequence numbers of the target random access opportunities in the two groups of multiple random access opportunities in adjacent system frames are different.
  • the fourth embodiment of the present application provides a random access device.
  • the device is applied to network equipment.
  • the device includes:
  • a transceiver unit configured to receive the first random access message repeatedly sent by the terminal device on multiple random access opportunities
  • a processing unit configured to determine the random access wireless network temporary identifier RA-RNTI of the terminal device according to one of the plurality of random access opportunities
  • the transceiver unit is also configured to send the second random access message scrambled by the RA-RNTI or the physical downlink control channel PDCCH to the terminal device.
  • processing unit is specifically used for:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • processing unit is specifically used for:
  • processing unit is specifically used for:
  • the RA-RNTI of the terminal device is determined according to the target random access opportunity.
  • sequence numbers of the target random access opportunities in the two groups of multiple random access opportunities in adjacent system frames are different.
  • the fifth embodiment of the present application provides a communication device.
  • the device includes a processor and a memory.
  • a computer program is stored in the memory.
  • the processor executes the computer program stored in the memory so that the The device executes the random access method described in the embodiment of the first aspect.
  • the sixth embodiment of the present application provides a communication device.
  • the device includes a processor and a memory.
  • a computer program is stored in the memory.
  • the processor executes the computer program stored in the memory so that the The device executes the random access method described in the embodiment of the second aspect.
  • the seventh embodiment of the present application provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to enable the The device executes the random access method described in the embodiment of the first aspect.
  • the eighth embodiment of the present application provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to enable the The device executes the random access method described in the embodiment of the second aspect.
  • the ninth embodiment of the present application provides a computer-readable storage medium for storing instructions. When the instructions are executed, the random access method described in the first embodiment is implemented.
  • the tenth embodiment of the present application provides a computer-readable storage medium for storing instructions. When the instructions are executed, the random access method described in the second embodiment is implemented.
  • the eleventh aspect embodiment of the present application proposes a computer program that, when run on a computer, causes the computer to execute the random access allocation method described in the first aspect embodiment.
  • the twelfth aspect embodiment of the present application provides a computer program that, when run on a computer, causes the computer to execute the random access method described in the second aspect embodiment.
  • a random access method and device provided by embodiments of the present application repeatedly sends a first random access message to a network device on multiple random access opportunities, and determines the random access message based on one of the multiple random access opportunities.
  • the random access wireless network temporary identifier RA-RNTI of the terminal device is used to detect the second random access message or the physical downlink control channel PDCCH sent by the network device, so that the terminal device can use a PRACH when repeatedly transmitting RA-RNTI is used to perform PDCCH blind detection, which effectively reduces the complexity of blind detection of terminal equipment, reduces the energy consumption of terminal equipment, and improves the communication efficiency of the system.
  • Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic flow chart of a random access method provided by an embodiment of the present application.
  • Figure 3 is a schematic flow chart of a random access method provided by an embodiment of the present application.
  • Figure 4 is a schematic flow chart of a random access method provided by an embodiment of the present application.
  • Figure 5 is a schematic flowchart of a random access method provided by an embodiment of the present application.
  • Figure 6a is a schematic diagram of a PRACH repeated transmission resource configuration method provided by an embodiment of the present application.
  • Figure 6b is a schematic diagram of a random access timing determination method provided by an embodiment of the present application.
  • Figure 7 is a schematic flow chart of a random access method provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a random access device provided by an embodiment of the present application.
  • Figure 9 is a schematic structural diagram of a random access device provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of another random access device provided by an embodiment of the present application.
  • Figure 11 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • first, second, third, etc. may be used to describe various information in the embodiments of this application, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • the words "if” and “if” as used herein may be interpreted as "when” or "when” or “in response to determining.”
  • Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include but is not limited to a first network device, a second network device and a terminal device.
  • the number and form of devices shown in Figure 1 are only for examples and do not constitute a limitation on the embodiments of the present application. In actual applications, It may include two or more network devices and two or more terminal devices.
  • the communication system shown in Figure 1 includes a network device 101 and a terminal device 102 as an example.
  • LTE Long Term Evolution
  • 5G new air interface system 5G new air interface system
  • other future new mobile communication systems 5G new air interface system
  • the network device 101 in the embodiment of this application is an entity on the network side that is used to transmit or receive signals.
  • the network device 101 may be an evolved base station (Evolved NodeB, eNB), a transmission point (Transmission Reception Point, TRP), a next generation base station (Next Generation NodeB, gNB) in an NR system, or other base stations in future mobile communication systems.
  • the embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment.
  • the network equipment provided by the embodiments of this application may be composed of a centralized unit (Central Unit, CU) and a distributed unit (Distributed Unit, DU).
  • the CU may also be called a control unit (Control Unit), using CU-DU.
  • Control Unit Control Unit
  • the structure can separate the protocol layers of network equipment, such as base stations, and place some protocol layer functions under centralized control on the CU. The remaining part or all protocol layer functions are distributed in the DU, and the CU centrally controls the DU.
  • the terminal device 102 in the embodiment of this application is an entity on the user side that is used to receive or transmit signals, such as a mobile phone.
  • Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (Mobile Station, MS), mobile terminal equipment (Mobile Terminal, MT), etc.
  • Terminal devices can be cars with communication functions, smart cars, mobile phones, wearable devices, tablets (Pad), computers with wireless transceiver functions, virtual reality (Virtual Reality, VR) terminal devices, augmented reality ( Augmented Reality (AR) terminal equipment, wireless terminal equipment in industrial control (Industrial Control), wireless terminal equipment in self-driving (Self-Driving), wireless terminal equipment in remote surgery (Remote Medical Surgery), smart grid ( Wireless terminal equipment in Smart Grid, wireless terminal equipment in Transportation Safety, wireless terminal equipment in Smart City, wireless terminal equipment in Smart Home, etc.
  • the embodiments of this application do not limit the specific technology and specific equipment form used by the terminal equipment.
  • the terminal device 102 can send the first random access message Msg1 (message 1) to the network device 101. After receiving the Msg1, the network device 101 , can send the second random access message Msg2 (message 2) to the terminal device.
  • Msg1 messagessage 1
  • Msg2 messagessage 2
  • RA-RNTI Random Access-Radio Network Temporary Identifier, Random Access Wireless Network Temporary Identifier
  • PDCCH Physical Downlink Control Channel
  • DCI Physical Downlink Control Channel
  • DCI Physical Downlink Control Information
  • DCI downlink control information
  • format of the scrambling code pair Msg2 format
  • CRC Cyclic Redundancy Check, cyclic redundancy check
  • PRACH Physical Random Access Channel
  • multiple transmissions can be performed in the time domain, which is PRACH repetition (repetition).
  • PRACH repetition repetition
  • the terminal equipment 102 uses the same uplink transmission beam (UL TX beam) to perform repeated transmissions on multiple transmission opportunities (that is, random access opportunities RO).
  • the multiple transmission opportunities correspond to multiple transmissions.
  • the time slots can be continuous or discrete, and are not limited here.
  • both the network device 101 and the terminal device 102 may use the RA-RNTI corresponding to different RO opportunities to perform Msg2 Or the transmission and detection of PDCCH for Msg2 may cause the terminal equipment 102 to fail to detect Msg2 for the terminal equipment, or the terminal equipment 102 uses RA-RNTI corresponding to multiple RO opportunities for detection, increasing the detection complexity.
  • RO Random access opportunities
  • Figure 2 is a schematic flow chart of a random access method provided by an embodiment of the present application. It should be noted that the random access method in the embodiment of the present application is executed by the terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 2, the method may include the following steps:
  • Step 201 Repeatly send the first random access message to the network device on multiple random access opportunities RO.
  • the terminal device can repeatedly send the first random access message Msg1 to the network device on multiple random access opportunities RO. After receiving the Msg1, the network device can send the second random access message Msg2 to the terminal device. Wherein, the first random access messages sent in the multiple ROs are the same.
  • the first random access message Msg1 is a random access preamble sequence (Random Access Preamble), and the second random access message Msg2 is a random access response RAR (Random Access Response).
  • RAR Random Access Response
  • the terminal device After sending the first random access message, the terminal device can try to detect the second random access message or the physical downlink control channel PDCCH sent by the network device in the RAR window (window).
  • the multiple random access opportunities RO may be pre-configured by the network device, or may be pre-agreed by the protocol.
  • the multiple random access opportunities RO correspond to multiple time slots in the time domain.
  • the multiple time slots may be continuous or discrete, which is not limited here.
  • Figure 6a is a schematic diagram of a PRACH repeated transmission resource configuration method provided by an embodiment of the present application.
  • the terminal device can repeatedly send Msg1 on the four ROs (RO#0-RO#3) configured in Figure 6a .
  • Step 202 Determine the random access wireless network temporary identity RA-RNTI of the terminal device according to the parameters of the target random access opportunity among the multiple random access opportunities.
  • the terminal device can determine the RA-RATI of the terminal device based on the parameters of one RO among the multiple ROs to detect the Msg2 or PDCCH sent by the network device.
  • the terminal device can determine the random access opportunity RO for calculating the RA-RNTI according to the agreement of the protocol. Then, both the network equipment and the terminal equipment can determine the RA-RNTI based on the parameters related to the RO, so as to prevent the base station and the terminal from being unable to determine which RO parameter is used to determine the RA-RNTI when receiving Msg1 sent through multiple ROs. Question about RNTI.
  • the terminal device can determine the random access opportunity RO for calculating the RA-RNTI based on the received instruction information sent by the network device.
  • the terminal device can determine the random access opportunity RO for calculating the RA-RNTI based on the system frame number SFN of the system frame in which the multiple ROs are located.
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id.
  • the above methods may also include:
  • Step 203 Use the RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network device.
  • the terminal device after sending Msg1, can use the RA-RNTI determined in the previous steps in the RAR window to detect Msg2 or PDCCH sent by the network device.
  • the terminal equipment can use the RA-RNTI to detect PDCCH DCI format 1_0.
  • the random access wireless network temporary identifier RA- of the terminal device is determined based on one of the multiple random access opportunities.
  • the RA-RNTI is used to detect the second random access message or the physical downlink control channel PDCCH sent by the network device, so that the terminal device can use an RA-RNTI to perform PDCCH blind detection when performing PRACH repeated transmission, effectively reducing the The complexity of blind detection of terminal equipment reduces the energy consumption of terminal equipment and improves the communication efficiency of the system.
  • Figure 3 is a schematic flow chart of a random access method provided by an embodiment of the present application. It should be noted that the random access method in the embodiment of the present application is executed by the terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 3, the method may include the following steps:
  • Step 301 Repeatly send the first random access message to the network device on multiple random access opportunities.
  • the terminal device can repeatedly send the first random access message Msg1 to the network device on multiple random access opportunities RO. After receiving the Msg1, the network device can send the second random access message Msg2 to the terminal device. Wherein, the first random access messages sent in the multiple ROs are the same.
  • the first random access message Msg1 is a random access preamble sequence
  • the second random access message Msg2 is a random access response RAR.
  • the terminal device After sending the first random access message, the terminal device can try to detect the second random access message or the physical downlink control channel PDCCH sent by the network device in the RAR window.
  • the multiple random access opportunities RO may be pre-configured by the network device, or may be pre-agreed by the protocol.
  • the multiple random access opportunities RO correspond to multiple time slots in the time domain.
  • the multiple time slots may be continuous or discrete, which is not limited here.
  • Step 302 Determine the target random access opportunity among the multiple random access opportunities according to the agreement of the protocol.
  • the target random access opportunity is the random access opportunity used to calculate RA-RNTI.
  • the terminal device can determine the target random access opportunity for calculating the RA-RNTI among multiple random access opportunities RO that repeatedly send Msg1 according to the agreement of the protocol. Then, both the network equipment and the terminal equipment can determine the RA-RNTI based on the parameters related to the RO, so as to prevent the base station and the terminal from being unable to determine which RO parameter is used to determine the RA-RNTI when receiving Msg1 sent through multiple ROs. Question about RNTI.
  • the protocol may agree that the target random access opportunity RO is the first of multiple random access opportunities RO (N in total, N is a positive integer) (such as RO#0 in Figure 6a), It can also be agreed that the target RO is the last one of multiple ROs (N in total, N is a positive integer) (such as RO#3 in Figure 6a), or it can also be agreed that the target RO is multiple ROs (N in total, N is a positive integer). N is the Mth positive integer), where M ⁇ N, M is a positive integer.
  • the terminal device can determine the target RO based on the number of ROs that repeatedly send PRACH.
  • Step 303 Determine the RA-RNTI of the terminal device according to the parameters of the target random access opportunity.
  • the terminal device can determine the RA-RNTI of the terminal device based on the target RO.
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id.
  • the above methods may also include:
  • Step 304 Use the RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network device.
  • the terminal device after sending Msg1, can use the RA-RNTI determined in the previous steps in the RAR window to detect Msg2 or PDCCH sent by the network device.
  • the terminal equipment can use the RA-RNTI to detect PDCCH DCI format 1_0.
  • the target random access opportunity among the multiple random access opportunities is determined according to the agreement of the protocol, and the target random access opportunity is determined according to the target random access opportunity.
  • determine the RA-RNTI of the terminal equipment and use the RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network equipment, so that the terminal equipment can use an RA-RNTI when performing PRACH repeated transmission.
  • RNTI is used to perform PDCCH blind detection, which effectively reduces the complexity of blind detection of terminal equipment, reduces the energy consumption of terminal equipment, and improves the communication efficiency of the system.
  • Figure 4 is a schematic flowchart of a random access method provided by an embodiment of the present application. It should be noted that the random access method in the embodiment of the present application is executed by the terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 4, the method may include the following steps:
  • Step 401 Repeatly send the first random access message to the network device on multiple random access opportunities.
  • the terminal device can repeatedly send the first random access message Msg1 to the network device on multiple random access opportunities RO. After receiving the Msg1, the network device can send the second random access message Msg2 to the terminal device. Wherein, the first random access messages sent in the multiple ROs are the same.
  • the first random access message Msg1 is a random access preamble sequence
  • the second random access message Msg2 is a random access response RAR.
  • the terminal device After sending the first random access message, the terminal device can try to detect the second random access message or the physical downlink control channel PDCCH sent by the network device in the RAR window.
  • the multiple random access opportunities RO may be pre-configured by the network device, or may be pre-agreed by the protocol.
  • the multiple random access opportunities RO correspond to multiple time slots in the time domain.
  • the multiple time slots may be continuous or discrete, which is not limited here.
  • Step 402 Receive instruction information sent by the network device, where the instruction information is used to determine a target random access opportunity among the multiple random access opportunities.
  • the target random access opportunity is the random access opportunity used to calculate RA-RNTI.
  • the terminal device can receive the instruction information sent by the network device, and based on the received instruction information, determine the target for calculating the RA-RNTI in multiple random access opportunities RO where Msg1 is repeatedly sent. Random access timing. Then, both the network equipment and the terminal equipment can determine the RA-RNTI based on the parameters related to the RO, so as to prevent the base station and the terminal from being unable to determine which RO parameter is used to determine the RA-RNTI when receiving Msg1 sent through multiple ROs. Question about RNTI.
  • the indication information may indicate that the target random access opportunity RO is the Mth of multiple random access opportunities RO (N in total, N is a positive integer), where M ⁇ N, M is positive integer.
  • the indication information may indicate the target RO explicitly, such as directly indicating the value of M or the sequence number of the target RO, or may indicate the target RO implicitly.
  • Step 403 Determine the RA-RNTI of the terminal device according to the parameters of the target random access opportunity.
  • the terminal device can determine the RA-RNTI of the terminal device based on the target RO.
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id.
  • the above methods may also include:
  • Step 404 Use the RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network device.
  • the terminal device after sending Msg1, can use the RA-RNTI determined in the previous steps in the RAR window to detect Msg2 or PDCCH sent by the network device.
  • the terminal equipment can use the RA-RNTI to detect PDCCH DCI format 1_0.
  • Access timing determine the RA-RNTI of the terminal device based on the target random access timing, and use the RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network device, so that the terminal device is performing
  • an RA-RNTI can be used for blind detection of PDCCH, which effectively reduces the complexity of blind detection of terminal equipment, reduces the energy consumption of terminal equipment, and improves the communication efficiency of the system.
  • Figure 5 is a schematic flowchart of a random access method provided by an embodiment of the present application. It should be noted that the random access method in the embodiment of the present application is executed by the terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 5, the method may include the following steps:
  • Step 501 Repeatly send the first random access message to the network device on multiple random access opportunities.
  • the terminal device can repeatedly send the first random access message Msg1 to the network device on multiple random access opportunities RO. After receiving the Msg1, the network device can send the second random access message Msg2 to the terminal device. Wherein, the first random access messages sent in the multiple ROs are the same.
  • the first random access message Msg1 is a random access preamble sequence
  • the second random access message Msg2 is a random access response RAR.
  • the terminal device After sending the first random access message, the terminal device can try to detect the second random access message or the physical downlink control channel PDCCH sent by the network device in the RAR window.
  • the multiple random access opportunities RO may be pre-configured by the network device, or may be pre-agreed by the protocol.
  • the multiple random access opportunities RO correspond to multiple time slots in the time domain.
  • the multiple time slots may be continuous or discrete, which is not limited here.
  • Step 502 Determine the target random access opportunity among the multiple random access opportunities based on the system frame number SFN of the system frame in which the multiple random access opportunities are located.
  • the target random access opportunity is the random access opportunity used to calculate RA-RNTI.
  • the terminal device can determine the system frame number SFN used to calculate the RA- The target random access timing of RNTI. Then, both the network equipment and the terminal equipment can determine the RA-RNTI based on the parameters related to the RO, so as to prevent the base station and the terminal from being unable to determine which RO parameter is used to determine the RA-RNTI when receiving Msg1 sent through multiple ROs. Question about RNTI.
  • the SFNs of the system frames in which the multiple ROs are located are different, and the determined time domain positions of the target RO in the multiple ROs may be different.
  • sequence numbers of the target random access opportunities in the two groups of multiple random access opportunities within adjacent system frames are different.
  • the target RO may be determined based on the remainder of the SFN of the system frame in which the multiple ROs are located relative to a specified value.
  • Figure 6b is a schematic diagram of a random access opportunity determination method provided by an embodiment of the present application.
  • the target ROs determined by the two groups of ROs on adjacent system frames are different, which can avoid the situation where the terminal device may repeatedly interpret the DCI, especially for the unlicensed frequency band NR-U (New Radio( NR)in Unlicensed Spectrum)RAR window configuration is a long scenario.
  • NR-U New Radio( NR)in Unlicensed Spectrum
  • the terminal device may repeatedly interpret the DCI.
  • Step 503 Determine the RA-RNTI of the terminal device according to the target random access opportunity.
  • the terminal device can determine the RA-RNTI of the terminal device based on the target RO.
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id.
  • the above methods may also include:
  • Step 504 Use the RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network device.
  • the terminal device after sending Msg1, can use the RA-RNTI determined in the previous steps in the RAR window to detect Msg2 or PDCCH sent by the network device.
  • the terminal equipment can use the RA-RNTI to detect PDCCH DCI format 1_0.
  • the multiple random access opportunities are determined based on the system frame number SFN of the system frame where the multiple random access opportunities are located.
  • the target random access opportunity in The terminal equipment can use an RA-RNTI to perform PDCCH blind detection when repeatedly transmitting PRACH, which effectively reduces the complexity of blind detection of the terminal equipment, reduces the energy consumption of the terminal equipment, and improves the communication efficiency of the system.
  • Figure 7 is a schematic flowchart of a random access method provided by an embodiment of the present application. It should be noted that the random access method in the embodiment of the present application is executed by the network device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 7, the method may include the following steps:
  • Step 701 Receive the first random access message repeatedly sent by the terminal device on multiple random access opportunities.
  • the terminal device can repeatedly send the first random access message Msg1 to the network device on multiple random access opportunities RO. Wherein, the first random access messages sent in the multiple ROs are the same. After receiving the Msg1, the network device can send the second random access message Msg2 to the terminal device.
  • the first random access message Msg1 is a random access preamble sequence
  • the second random access message Msg2 is a random access response RAR.
  • the network device may perform combined correlation detection of Msg1 (preamble) on the last RO of the multiple ROs.
  • the network device After receiving Msg1, the network device calculates the RA-RNTI and sends the second random access message scrambled with the RA-RNTI or the physical downlink control channel PDCCH to the terminal device.
  • the multiple random access opportunities RO may be pre-configured by the network device or pre-agreed by the protocol.
  • the multiple random access opportunities RO correspond to multiple time slots in the time domain.
  • the multiple time slots may be continuous or discrete, which is not limited here.
  • Step 702 Determine the random access wireless network temporary identity RA-RNTI of the terminal device based on the parameters of the target random access opportunity among the multiple random access opportunities.
  • the network equipment device can determine the RA-RATI of the terminal device according to one of the configured ROs to scramble the sent PDCCH DCI format1_0.
  • the network device can determine the random access opportunity RO for calculating the RA-RNTI according to the agreement of the protocol.
  • the network device determines the random access opportunity RO for calculating the RA-RNTI by itself, and sends indication information to the terminal device, where the indication information is used to indicate the target random access opportunity RO.
  • the network device can determine the random access opportunity RO for calculating the RA-RNTI based on the system frame number SFN of the system frame in which the multiple ROs are located.
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id.
  • the above methods may also include:
  • Step 703 Send the second random access message scrambled using the RA-RNTI or the physical downlink control channel PDCCH to the terminal device.
  • the network device after receiving Msg1, can send Msg2 or PDCCH scrambled using the RA-RNTI determined in the previous steps to the terminal device.
  • the network device can use the RA-RNTI as a scrambling code to scramble the PDCCH DCI format 1_0.
  • the secondary cell group failure information includes information related to the addition or change of the conditional primary and secondary cells PSCell, so that when the secondary cell group fails, the network device can also obtain the conditions
  • the relevant information added or changed in the PSCell of the primary and secondary cells enables the network equipment to obtain more comprehensive information about the failure of the secondary cell group, thereby more accurately analyzing the reasons for the failure of the secondary cell group, and effectively improving the communication efficiency of the system.
  • this application also provides a random access device. Since the random access device provided by the embodiments of this application corresponds to the methods provided by the above embodiments, therefore The implementation of the random access method is also applicable to the random access device provided in the following embodiments, and will not be described in detail in the following embodiments.
  • Figure 8 is a schematic structural diagram of a random access device provided by an embodiment of the present application.
  • the random access device 800 includes: a transceiver unit 810 and a processing unit 820, where:
  • the transceiver unit 810 is configured to repeatedly send the first random access message to the network device on multiple random access opportunities;
  • the processing unit 820 is configured to determine the random access wireless network temporary identity RA-RNTI of the terminal device according to one of the multiple random access opportunities;
  • the transceiver unit 810 is also configured to use the RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network device.
  • processing unit 820 is specifically used to:
  • the RA-RNTI of the terminal device is determined.
  • processing unit 820 is specifically used to:
  • the RA-RNTI of the terminal device is determined.
  • processing unit 820 is specifically used to:
  • the RA-RNTI of the terminal device is determined.
  • sequence numbers of the target random access opportunities in the two groups of multiple random access opportunities in adjacent system frames are different.
  • the random access device of this embodiment can determine the random access of the terminal device according to one of the multiple random access opportunities by repeatedly sending the first random access message to the network device at multiple random access opportunities. Enter the wireless network temporary identifier RA-RNTI, and use this RA-RNTI to detect the second random access message or the physical downlink control channel PDCCH sent by the network device, so that the terminal device can use one RA-RNTI when performing PRACH repeated transmission.
  • PDCCH blind detection effectively reduces the complexity of blind detection of terminal equipment, reduces the energy consumption of terminal equipment, and improves the communication efficiency of the system.
  • Figure 9 is a schematic structural diagram of a random access device provided by an embodiment of the present application.
  • the random access device 900 includes: a transceiver unit 910 and a processing unit 920, where:
  • the transceiver unit 910 is configured to receive the first random access message repeatedly sent by the terminal device on multiple random access opportunities;
  • the processing unit 920 is configured to determine the random access wireless network temporary identity RA-RNTI of the terminal device according to one of the multiple random access opportunities;
  • the transceiver unit 910 is also configured to send the second random access message scrambled by the RA-RNTI or the physical downlink control channel PDCCH to the terminal device.
  • processing unit 920 is specifically used to:
  • the RA-RNTI of the terminal device is determined.
  • processing unit 920 is specifically used to:
  • processing unit 920 is specifically used to:
  • the RA-RNTI of the terminal device is determined.
  • sequence numbers of the target random access opportunities in the two groups of multiple random access opportunities in adjacent system frames are different.
  • the random access device of this embodiment can receive the secondary cell group failure information sent by the terminal device.
  • the secondary cell group failure information includes information related to the addition or change of the conditional primary and secondary cells PSCell, so that when the secondary cell group fails, , the network device can also obtain the relevant information about the addition or change of the conditional primary and secondary cell PSCell, so that the network device can more comprehensively obtain the relevant information about the failure of the secondary cell group, and then more accurately analyze the reasons for the failure of the secondary cell group, effectively improving System communication efficiency.
  • embodiments of the present application also provide a communication device, including: a processor and a memory.
  • a computer program is stored in the memory.
  • the processor executes the computer program stored in the memory, so that the device executes the steps shown in Figure 2 to The method shown in the embodiment of Figure 5.
  • embodiments of the present application also provide a communication device, including: a processor and a memory.
  • a computer program is stored in the memory.
  • the processor executes the computer program stored in the memory, so that the device executes the implementation in Figure 7 The method shown in the example.
  • embodiments of the present application also provide a communication device, including: a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to The methods shown in the embodiments of Figures 2 to 5 are executed.
  • embodiments of the present application also provide a communication device, including: a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to The method shown in the embodiment of Figure 7 is executed.
  • the random access device 1000 may be a network device, a terminal device, a chip, a chip system, a processor, etc. that supports the network device to implement the above method, or a chip or a chip system that supports the terminal device to implement the above method. , or processor, etc.
  • the device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
  • the random access device 1000 may include one or more processors 1001.
  • the processor 1001 may be a general-purpose processor or a special-purpose processor, or the like.
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control and execute random access devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.)
  • a computer program processes data for a computer program.
  • the random access device 1000 may also include one or more memories 1002, on which a computer program 1003 may be stored.
  • the processor 1001 executes the computer program 1003, so that the random access device 1000 executes the above method embodiments. described method.
  • the computer program 1003 may be solidified in the processor 1001, in which case the processor 1001 may be implemented by hardware.
  • the memory 1002 may also store data.
  • the random access device 1000 and the memory 1002 can be set up separately or integrated together.
  • the random access device 1000 may also include a transceiver 1005 and an antenna 1006.
  • the transceiver 1005 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions.
  • the transceiver 1005 may include a receiver and a transmitter.
  • the receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function;
  • the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.
  • the random access device 1000 may also include one or more interface circuits 1007.
  • the interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001 .
  • the processor 1001 executes code instructions to cause the random access device 1000 to execute the method described in the above method embodiment.
  • the processor 1001 may include a transceiver for implementing receiving and transmitting functions.
  • the transceiver may be a transceiver circuit, an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
  • the random access device 1000 may include a circuit, and the circuit may implement the sending or receiving or communication functions in the foregoing method embodiments.
  • the processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS n-type metal oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the random access device described in the above embodiments may be a network device or a terminal device, but the scope of the random access device described in this application is not limited to this, and the structure of the random access device may not be as shown in Figures 8-9 limits.
  • the random access device may be a stand-alone device or may be part of a larger device.
  • the random access device can be:
  • the IC collection may also include storage components for storing data and computer programs;
  • the random access device can be a chip or a chip system
  • the chip shown in Figure 11 includes a processor 1101 and an interface 1102.
  • the number of processors 1101 may be one or more, and the number of interfaces 1102 may be multiple.
  • Interface 1102 for code instructions and transmission to the processor
  • the processor 1101 is configured to run code instructions to perform the methods shown in Figures 2 to 5.
  • Interface 1102 for code instructions and transmission to the processor
  • the processor 1101 is used to run code instructions to perform the method as shown in Figure 7.
  • the chip also includes a memory 1103, which is used to store necessary computer programs and data.
  • Embodiments of the present application also provide a communication system, which system includes a random access device as a terminal device and a random access device as a network device in the aforementioned embodiments of FIG. 8-9 , or the system includes the aforementioned implementation of FIG. 10
  • a random access device is used as a terminal device and a random access device is used as a network device.
  • This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.
  • This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.
  • a computer program product includes one or more computer programs.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer program may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program may be transmitted from a website, computer, server or data center via a wireline (e.g.
  • Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless means to transmit to another website, computer, server or data center.
  • Computer-readable storage media can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or other integrated media that contains one or more available media. Available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD)) )wait.
  • magnetic media e.g., floppy disks, hard disks, tapes
  • optical media e.g., high-density digital video discs (DVD)
  • semiconductor media e.g., solid state disks (SSD)
  • At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application.
  • the technical feature is distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D”, etc.
  • the technical features described in “first”, “second”, “third”, “A”, “B”, “C” and “D” are in no particular order or order.
  • the corresponding relationships shown in each table in this application can be configured or predefined.
  • the values of the information in each table are only examples and can be configured as other values, which are not limited by this application.
  • the corresponding relationships shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc.
  • the names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.
  • Predefinition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

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Abstract

本申请实施例公开了一种随机接入方法及装置，通过在多个随机接入时机上向网络设备重复发送第一随机接入消息，根据该多个随机接入时机中的一个，确定该终端设备的随机接入无线网络临时标识RA-RNTI，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH，使得终端设备在进行PRACH重复发送时能够使用一个RA-RNTI来进行PDCCH盲检，有效降低了终端设备盲检的复杂度，减少终端设备的能耗，提高系统的通信效率。

Description

随机接入方法及装置 技术领域
本申请涉及通信技术领域，特别是指一种随机接入方法及装置。
背景技术
在5G NR(New Radio，新空口)系统的四步随机接入过程中，终端设备能够向网络设备发送第一随机接入消息Msg1(message 1)，网络设备在接收到该Msg1之后，能够向终端设备发送第二随机接入消息Msg2(message 2)。
RA-RNTI(Random Access-Radio Network Temporary Identifier，随机接入无线网络临时标识)可以表征Msg1发送时使用的时频资源；网络设备收到该Msg1后，会计算RA-RNTI，并将该RA-RNTI作为扰码对Msg2的PDCCH DCI format 1_0(Physical Downlink Control Channel，PDCCH，物理下行控制信道；Downlink Control Information，DCI，下行控制信息；format，格式)的CRC(Cyclic Redundancy Check，循环冗余校验)进行加扰。因此只有在RA-RNTI标识的时频资源发送Msg1的终端设备才能正确解码这个PDCCH的DCI。
发明内容
本申请第一方面实施例提出了一种随机接入方法，所述方法由终端设备执行，所述方法包括：
在多个随机接入时机上向网络设备重复发送第一随机接入消息；
根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
采用所述RA-RNTI检测所述网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
可选地，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
根据协议的约定，确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，所述目标随机接入时机的序号与所述多个随机接入时机的个数存在关联关系。
可选地，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
接收所述网络设备发送的指示信息，所述指示信息用于确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
根据所述多个随机接入时机所在的系统帧的系统帧号SFN，确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
本申请第二方面实施例提出了一种随机接入方法，所述方法由网络设备执行，所述方法包括：
接收终端设备在多个随机接入时机上重复发送的第一随机接入消息；
根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
向所述终端设备发送采用所述RA-RNTI加扰的第二随机接入消息或者物理下行控制信道PDCCH。
可选地，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
根据协议的约定，确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，所述目标随机接入时机的序号与所述多个随机接入时机的个数存在关联关系。
可选地，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI；
向所述终端设备发送指示信息，所述指示信息用于指示所述目标随机接入时机。
可选地，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
根据所述多个随机接入时机所在的系统帧的系统帧号SFN，确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
本申请第三方面实施例提出了一种随机接入装置，所述装置应用于终端设备，所述装置包括：
收发单元，用于在多个随机接入时机上向网络设备重复发送第一随机接入消息；
处理单元，用于根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
所述收发单元，还用于采用所述RA-RNTI检测所述网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
可选地，所述处理单元具体用于：
根据协议的约定，确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，所述目标随机接入时机的序号与所述多个随机接入时机的个数存在关联关系。
可选地，所述处理单元具体用于：
接收所述网络设备发送的指示信息，所述指示信息用于确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，所述处理单元具体用于：
根据所述多个随机接入时机所在的系统帧的系统帧号SFN，确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
本申请第四方面实施例提出了一种随机接入装置，所述装置应用于网络设备，所述装置包括：
收发单元，用于接收终端设备在多个随机接入时机上重复发送的第一随机接入消息；
处理单元，用于根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
所述收发单元，还用于向所述终端设备发送采用所述RA-RNTI加扰的第二随机接入消息或者物理下行控制信道PDCCH。
可选地，所述处理单元具体用于：
根据协议的约定，确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，所述目标随机接入时机的序号与所述多个随机接入时机的个数存在关联关系。
可选地，所述处理单元具体用于：
确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI；
向所述终端设备发送指示信息，所述指示信息用于指示所述目标随机接入时机。
可选地，所述处理单元具体用于：
根据所述多个随机接入时机所在的系统帧的系统帧号SFN，确定所述多个随机接入时机中的目标随机接入时机；
根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
可选地，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
本申请第五方面实施例提出了一种通信装置，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行上述第一方面实施例所述的随机接入方法。
本申请第六方面实施例提出了一种通信装置，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行上述第二方面实施例所述的随机接入方法。
本申请第七方面实施例提出了一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第一方面实施例所述的随机接入方法。
本申请第八方面实施例提出了一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第二方面实施例所述的随机接入方法。
本申请第九方面实施例提出了一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使上述第一方面实施例所述的随机接入方法被实现。
本申请第十方面实施例提出了一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使上述第二方面实施例所述的随机接入方法被实现。
本申请第十一方面实施例提出了一种计算机程序，当其在计算机上运行时，使得计算机执行第一 方面实施例所述的随机接入分配方法。
本申请第十二方面实施例提出了一种计算机程序，当其在计算机上运行时，使得计算机执行第二方面实施例所述的随机接入方法。
本申请实施例提供的一种随机接入方法及装置，通过在多个随机接入时机上向网络设备重复发送第一随机接入消息，根据该多个随机接入时机中的一个，确定该终端设备的随机接入无线网络临时标识RA-RNTI，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH，使得终端设备在进行PRACH重复发送时能够使用一个RA-RNTI来进行PDCCH盲检，有效降低了终端设备盲检的复杂度，减少终端设备的能耗，提高系统的通信效率。
本申请附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1为本申请实施例提供的一种通信系统的架构示意图；
图2是本申请实施例提供的一种随机接入方法的流程示意图；
图3是本申请实施例提供的一种随机接入方法的流程示意图；
图4是本申请实施例提供的一种随机接入方法的流程示意图；
图5是本申请实施例提供的一种随机接入方法的流程示意图；
图6a是本申请实施例提供的一种PRACH重复发送资源配置方式示意图；
图6b是本申请实施例提供的一种随机接入时机确定方式示意图；
图7是本申请实施例提供的一种随机接入方法的流程示意图；
图8是本申请实施例提供的一种随机接入装置的结构示意图；
图9是本申请实施例提供的一种随机接入装置的结构示意图；
图10是本申请实施例提供的另一种随机接入装置的结构示意图；
图11是本申请实施例提供的一种芯片的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请实施例的一些方面相一致的装置和方法的例子。
在本申请实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请实施例。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息 不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的要素。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
为了更好的理解本申请实施例公开的一种随机接入方法，下面首先对本申请实施例适用的通信系统进行描述。
请参见图1，图1为本申请实施例提供的一种通信系统的架构示意图。该通信系统可包括但不限于一个第一网络设备、一个第二网络设备和一个终端设备，图1所示的设备数量和形态仅用于举例并不构成对本申请实施例的限定，实际应用中可以包括两个或两个以上的网络设备和两个或两个以上的终端设备。图1所示的通信系统以包括一个网络设备101和一个终端设备102为例。
需要说明的是，本申请实施例的技术方案可以应用于各种通信系统。例如：长期演进(Long Term Evolution，LTE)系统、第五代移动通信系统、5G新空口系统，或者其他未来的新型移动通信系统等。
本申请实施例中的网络设备101是网络侧的一种用于发射或接收信号的实体。例如，网络设备101和可以为演进型基站(Evolved NodeB，eNB)、传输点(Transmission Reception Point，TRP)、NR系统中的下一代基站(Next Generation NodeB，gNB)、其他未来移动通信系统中的基站或无线保真(Wireless Fidelity，WiFi)系统中的接入节点等。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。本申请实施例提供的网络设备可以是由集中单元(Central Unit，CU)与分布式单元(Distributed Unit，DU)组成的，其中，CU也可以称为控制单元(Control Unit)，采用CU-DU的结构可以将网络设备，例如基站的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU。
本申请实施例中的终端设备102是用户侧的一种用于接收或发射信号的实体，如手机。终端设备也可以称为终端设备(terminal)、用户设备(user equipment，UE)、移动台(Mobile Station，MS)、移动终端设备(Mobile Terminal，MT)等。终端设备可以是具备通信功能的汽车、智能汽车、手机(Mobile Phone)、穿戴式设备、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(Industrial Control)中的无线终端设备、无人驾驶(Self-Driving)中的无线终端设备、远程手术(Remote Medical Surgery)中的无线终端设备、智能电网(Smart Grid)中的无线终端设备、运输安全(Transportation Safety)中的无线终端设备、智慧城市(Smart City)中的无线终端设备、智慧家庭(Smart Home)中的无线终端设备等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
在5G NR(New Radio，新空口)系统的四步随机接入过程中，终端设备102能够向网络设备101发送第一随机接入消息Msg1(message 1)，网络设备101在接收到该Msg1之后，能够向终端设备发送第二随机接入消息Msg2(message 2)。
RA-RNTI(Random Access-Radio Network Temporary Identifier，随机接入无线网络临时标识)可以表征Msg1发送时使用的时频资源，终端设备102发送Msg1时会计算RA-RNTI并保存；网络设备 101收到该Msg1后，同样会计算RA-RNTI，并将该RA-RNTI作为扰码对Msg2的PDCCH DCI format1_0(Physical Downlink Control Channel，PDCCH，物理下行控制信道，Downlink Control Information，DCI，下行控制信息，format，格式)的CRC(Cyclic Redundancy Check，循环冗余校验)进行加扰。因此只有在RA-RNTI标识的时频资源发送Msg1的UE才能正确解码这个PDCCH的DCI。
在3GPP R18中，对于PRACH(Physical Random Access Channel，物理随机接入信道)覆盖增强，提出可以在时域进行多次发送，也就是PRACH重复发送(repetition)。一种可能的方向是，终端设备102使用相同的上行发送波束(UL TX beam)在多个传输时机(也就是随机接入时机RO)上进行重复发送，该多个传输时机对应的多个传输时隙之间可以是连续的，也可以是离散的，此处不作限定。
若终端设备102使用多个随机接入时机RO(RACH Occasion，RACH，Random Access Channel)进行PRACH的重复发送，网络设备101和终端设备102双方可能使用不同的RO时机对应的RA-RNTI来进行Msg2或者PDCCH for Msg2的传输和检测，导致终端设备102可能检测不到针对该终端设备的Msg2，或者，终端设备102采用多个RO时机对应的RA-RNTI进行检测，增加检测复杂度。
可以理解的是，本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
下面结合附图对本申请所提供的随机接入方法及其装置进行详细地介绍。
请参见图2，图2是本申请实施例提供的一种随机接入方法的流程示意图。需要说明的是，本申请实施例的随机接入方法由终端设备执行。该方法可以独立执行，也可以结合本申请任意一个其他实施例一起被执行。如图2所示，该方法可以包括如下步骤：
步骤201，在多个随机接入时机RO上向网络设备重复发送第一随机接入消息。
在本申请实施例中，终端设备能够在多个随机接入时机RO上向网络设备重复发送第一随机接入消息Msg1。网络设备在接收到该Msg1之后，能够向终端设备发送第二随机接入消息Msg2。其中，该多个RO中发送的第一随机接入消息是相同的。
需要说明的是，在本申请实施例中，第一随机接入消息Msg1为随机接入前导序列(Random Access Preamble)，第二随机接入消息Msg2为随机接入响应RAR(Random Access Response)。
终端设备在发送该第一随机接入消息之后，能够在RAR窗口(window)中尝试检测网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，该多个随机接入时机RO，可以是网络设备预先配置的，也可以是协议预先约定的。
作为一种可能的实现方式，该多个随机接入时机RO对应时域上多个时隙，该多个时隙可以是连续的，也可以是离散的，此处不作限定。如图6a所示，图6a是本申请实施例提供的一种PRACH重复发送资源配置方式示意图，终端设备能够在图6a中配置的四个RO(RO#0-RO#3)上重复发送Msg1。
步骤202，根据该多个随机接入时机中的目标随机接入时机的参数，确定该终端设备的随机接入无线网络临时标识RA-RNTI。
在本申请实施例中，终端设备能够根据该多个RO中的一个RO的参数，确定该终端设备的RA- RATI，用以检测网络设备发送的Msg2或者PDCCH。
在一些实施方式中，终端设备能够根据协议的约定，确定出计算该RA-RNTI的随机接入时机RO。继而，网络设备和终端设备都能够根据该RO相关的参数确定出RA-RNTI，以防止在基站和终端在收到通过多个RO发送的Msg1时，无法确定通过哪一个RO的参数确定RA-RNTI的问题。
在一些实施方式中，终端设备能够根据接收的网络设备发送的指示信息，确定出计算该RA-RNTI的随机接入时机RO。
在一些实施方式中，终端设备能够根据该多个RO所在的系统帧的系统帧号SFN，确定出计算该RA-RNTI的随机接入时机RO。
在本申请实施例中，RA-RNTI的计算公式为：
RA-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id。
其中，参数的含义如下表所示：
Figure PCTCN2022093408-appb-000001
在一些可能的实现方式中，上述方法还可以包括：
步骤203，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，终端设备在发送Msg1之后，能够在RAR窗口中采用前述步骤确定的RA-RNTI，检测网络设备发送的Msg2或者PDCCH。
在一些实施方式中，终端设备能够采用该RA-RNTI检测PDCCH DCI format 1_0。
综上，通过在多个随机接入时机上向网络设备重复发送第一随机接入消息，根据该多个随机接入时机中的一个，确定该终端设备的随机接入无线网络临时标识RA-RNTI，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH，使得终端设备在进行PRACH重复发送时能够使用一个RA-RNTI来进行PDCCH盲检，有效降低了终端设备盲检的复杂度，减少终端设备的能耗，提高系统的通信效率。
请参见图3，图3是本申请实施例提供的一种随机接入方法的流程示意图。需要说明的是，本申请实施例的随机接入方法由终端设备执行。该方法可以独立执行，也可以结合本申请任意一个其他实施例一起被执行。如图3所示，该方法可以包括如下步骤：
步骤301，在多个随机接入时机上向网络设备重复发送第一随机接入消息。
在本申请实施例中，终端设备能够在多个随机接入时机RO上向网络设备重复发送第一随机接入消息Msg1。网络设备在接收到该Msg1之后，能够向终端设备发送第二随机接入消息Msg2。其中，该多个RO中发送的第一随机接入消息是相同的。
需要说明的是，在本申请实施例中，第一随机接入消息Msg1为随机接入前导序列，第二随机接 入消息Msg2为随机接入响应RAR。
终端设备在发送该第一随机接入消息之后，能够在RAR窗口中尝试检测网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，该多个随机接入时机RO，可以是网络设备预先配置的，也可以是协议预先约定的。
作为一种可能的实现方式，该多个随机接入时机RO对应时域上多个时隙，该多个时隙可以是连续的，也可以是离散的，此处不作限定。
步骤302，根据协议的约定，确定该多个随机接入时机中的目标随机接入时机。
其中，目标随机接入时机是用来计算RA-RNTI的随机接入时机。
在本申请实施例中，终端设备能够根据协议的约定，在重复发送Msg1的多个随机接入时机RO中，确定出用于计算RA-RNTI的目标随机接入时机。继而，网络设备和终端设备都能够根据该RO相关的参数确定出RA-RNTI，以防止在基站和终端在收到通过多个RO发送的Msg1时，无法确定通过哪一个RO的参数确定RA-RNTI的问题。
在一些实施方式中，协议可以约定该目标随机接入时机RO为多个随机接入时机RO(共N个，N为正整数)中的第一个(比如图6a中的RO#0)，也可以约定该目标RO为多个RO(共N个，N为正整数)中的最后一个(比如图6a中的RO#3)，还可以约定该目标RO为多个RO(共N个，N为正整数)中的第M个，其中M<N，M为正整数。
在一些实施方式中，该目标RO的序号与该多个RO的个数存在关联关系。终端设备能够根据重复发送PRACH的RO的个数，确定该目标RO。
作为一种示例，协议可以约定该目标RO为多个RO(共N个，N为正整数)中的第M个，其中M＝N/2，等等。
可以理解，上述目标RO的序号与该多个RO的个数之间的关联关系，仅作为一种示例示出，还可以有其他的关联关系，在此不进行限定。
步骤303，根据该目标随机接入时机的参数，确定该终端设备的RA-RNTI。
在本申请实施例中，终端设备能够根据该目标RO，确定出该终端设备的RA-RNTI。
在本申请实施例中，该RA-RNTI的计算公式为：
RA-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id。
其中，参数的含义如下表所示：
Figure PCTCN2022093408-appb-000002
在一些可能的实现方式中，上述方法还可以包括：
步骤304，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，终端设备在发送Msg1之后，能够在RAR窗口中采用前述步骤确定的RA-RNTI，检测网络设备发送的Msg2或者PDCCH。
在一些实施方式中，终端设备能够采用该RA-RNTI检测PDCCH DCI format 1_0。
综上，通过在多个随机接入时机上向网络设备重复发送第一随机接入消息，根据协议的约定，确定该多个随机接入时机中的目标随机接入时机，根据该目标随机接入时机，确定该终端设备的RA-RNTI，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH，使得终端设备在进行PRACH重复发送时能够使用一个RA-RNTI来进行PDCCH盲检，有效降低了终端设备盲检的复杂度，减少终端设备的能耗，提高系统的通信效率。
请参见图4，图4是本申请实施例提供的一种随机接入方法的流程示意图。需要说明的是，本申请实施例的随机接入方法由终端设备执行。该方法可以独立执行，也可以结合本申请任意一个其他实施例一起被执行。如图4所示，该方法可以包括如下步骤：
步骤401，在多个随机接入时机上向网络设备重复发送第一随机接入消息。
在本申请实施例中，终端设备能够在多个随机接入时机RO上向网络设备重复发送第一随机接入消息Msg1。网络设备在接收到该Msg1之后，能够向终端设备发送第二随机接入消息Msg2。其中，该多个RO中发送的第一随机接入消息是相同的。
需要说明的是，在本申请实施例中，第一随机接入消息Msg1为随机接入前导序列，第二随机接入消息Msg2为随机接入响应RAR。
终端设备在发送该第一随机接入消息之后，能够在RAR窗口中尝试检测网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，该多个随机接入时机RO，可以是网络设备预先配置的，也可以是协议预先约定的。
作为一种可能的实现方式，该多个随机接入时机RO对应时域上多个时隙，该多个时隙可以是连续的，也可以是离散的，此处不作限定。
步骤402，接收该网络设备发送的指示信息，该指示信息用于确定该多个随机接入时机中的目标随机接入时机。
其中，目标随机接入时机是用来计算RA-RNTI的随机接入时机。
在本申请实施例中，终端设备能够接收网络设备发送的指示信息，并根据接收的该指示信息，在重复发送Msg1的多个随机接入时机RO中，确定出用于计算RA-RNTI的目标随机接入时机。继而，网络设备和终端设备都能够根据该RO相关的参数确定出RA-RNTI，以防止在基站和终端在收到通过多个RO发送的Msg1时，无法确定通过哪一个RO的参数确定RA-RNTI的问题。
在一些实施方式中，该指示信息可以指示该目标随机接入时机RO为多个随机接入时机RO(共N个，N为正整数)中的第M个，其中M≤N，M为正整数。
可选地，该指示信息可以显示地指示该目标RO，比如直接指示M的值或者该目标RO的序号，也可以隐式地指示该目标RO。
步骤403，根据该目标随机接入时机的参数，确定该终端设备的RA-RNTI。
在本申请实施例中，终端设备能够根据该目标RO，确定出该终端设备的RA-RNTI。
在本申请实施例中，该RA-RNTI的计算公式为：
RA-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id。
其中，参数的含义如下表所示：
Figure PCTCN2022093408-appb-000003
在一些可能的实现方式中，上述方法还可以包括：
步骤404，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，终端设备在发送Msg1之后，能够在RAR窗口中采用前述步骤确定的RA-RNTI，检测网络设备发送的Msg2或者PDCCH。
在一些实施方式中，终端设备能够采用该RA-RNTI检测PDCCH DCI format 1_0。
综上，通过在多个随机接入时机上向网络设备重复发送第一随机接入消息，接收该网络设备发送的指示信息，该指示信息用于确定该多个随机接入时机中的目标随机接入时机，根据该目标随机接入时机，确定该终端设备的RA-RNTI，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH，使得终端设备在进行PRACH重复发送时能够使用一个RA-RNTI来进行PDCCH盲检，有效降低了终端设备盲检的复杂度，减少终端设备的能耗，提高系统的通信效率。
请参见图5，图5是本申请实施例提供的一种随机接入方法的流程示意图。需要说明的是，本申请实施例的随机接入方法由终端设备执行。该方法可以独立执行，也可以结合本申请任意一个其他实施例一起被执行。如图5所示，该方法可以包括如下步骤：
步骤501，在多个随机接入时机上向网络设备重复发送第一随机接入消息。
在本申请实施例中，终端设备能够在多个随机接入时机RO上向网络设备重复发送第一随机接入消息Msg1。网络设备在接收到该Msg1之后，能够向终端设备发送第二随机接入消息Msg2。其中，该多个RO中发送的第一随机接入消息是相同的。
需要说明的是，在本申请实施例中，第一随机接入消息Msg1为随机接入前导序列，第二随机接入消息Msg2为随机接入响应RAR。
终端设备在发送该第一随机接入消息之后，能够在RAR window中尝试检测网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，该多个随机接入时机RO，可以是网络设备预先配置的，也可以是协议预先约定的。
作为一种可能的实现方式，该多个随机接入时机RO对应时域上多个时隙，该多个时隙可以是连续的，也可以是离散的，此处不作限定。
步骤502，根据该多个随机接入时机所在的系统帧的系统帧号SFN，确定该多个随机接入时机中 的目标随机接入时机。
其中，目标随机接入时机是用来计算RA-RNTI的随机接入时机。
在本申请实施例中，终端设备能够根据该多个随机接入时机RO所在的系统帧的系统帧号SFN，在重复发送Msg1的多个随机接入时机RO中，确定出用于计算RA-RNTI的目标随机接入时机。继而，网络设备和终端设备都能够根据该RO相关的参数确定出RA-RNTI，以防止在基站和终端在收到通过多个RO发送的Msg1时，无法确定通过哪一个RO的参数确定RA-RNTI的问题。
在本申请实施例中，该多个RO所在的系统帧的SFN不同，确定出的目标RO在该多个RO中的时域位置可以是不同的。
在一些实施方式中，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
在一些实施方式中，可以根据该多个RO所在的系统帧的SFN相对于一个指定值的余数，确定出目标RO。
作为一种示例，当SFN mod Q＝0时，N个RO中的第1个RO作为目标RO，用于RA-RNTI的计算；当SFN mod Q＝1时，N个RO中的第2个RO作为目标RO，用于RA-RNTI的计算；当SFN mod Q＝2时，N个RO中的第3个RO作为目标RO，用于RA-RNTI的计算等等。其中，mod表示取余，Q为正整数。
可选地，该指定值Q的取值可以是协议规定的，也可以是通过接收网络设备的指示确定的，还可以是根据RARwindow的长度确定的，比如RARwindow为4个SFN(40ms)时，则Q＝4。
作为一种示例，可以参见图6b，图6b是本申请实施例提供的一种随机接入时机确定方式示意图，图6b中在系统帧SFN#n和系统帧SFN#n+1均配置有用于重复发送PRACH的多个RO，其中，n mod Q＝0，该四个RO中的第1个RO作为目标RO，n+1mod Q＝1，该四个RO中的第2个RO作为目标RO。
在本申请实施例中，相邻的系统帧上的两组RO确定的目标RO是不同的，能够避免终端设备可能会重复解读DCI的情况，尤其是针对非授权频段NR-U(New Radio(NR)in Unlicensed Spectrum)RAR window配置较长的场景中。
需要说明的是，如果SFN#n中的多个RO所在的时隙和符号与SFN#n+1中的多个RO所在的时隙和符号相同，且RAR窗口>10ms，在针对SFN#n的RAR窗口中，会包括针对SFN#n+1的RAR窗口，也就是两个RAR窗口会重叠，在针对SFN#n的RAR窗口中，可能会收到针对SFN#n+1的RAR，如果两个RAR的RA-RNTI一致(也就是选择了相同序号的RO作为目标RO)，则可能会出现终端设备重复解读DCI的情况。
步骤503，根据该目标随机接入时机，确定该终端设备的RA-RNTI。
在本申请实施例中，终端设备能够根据该目标RO，确定出该终端设备的RA-RNTI。
在本申请实施例中，该RA-RNTI的计算公式为：
RA-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id。
其中，参数的含义如下表所示：
Figure PCTCN2022093408-appb-000004
Figure PCTCN2022093408-appb-000005
在一些可能的实现方式中，上述方法还可以包括：
步骤504，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，终端设备在发送Msg1之后，能够在RAR窗口中采用前述步骤确定的RA-RNTI，检测网络设备发送的Msg2或者PDCCH。
在一些实施方式中，终端设备能够采用该RA-RNTI检测PDCCH DCI format 1_0。
综上，通过在多个随机接入时机上向网络设备重复发送第一随机接入消息，根据该多个随机接入时机所在的系统帧的系统帧号SFN，确定该多个随机接入时机中的目标随机接入时机，根据该目标随机接入时机，确定该终端设备的RA-RNTI，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH，使得终端设备在进行PRACH重复发送时能够使用一个RA-RNTI来进行PDCCH盲检，有效降低了终端设备盲检的复杂度，减少终端设备的能耗，提高系统的通信效率。
请参见图7，图7是本申请实施例提供的一种随机接入方法的流程示意图。需要说明的是，本申请实施例的随机接入方法由网络设备执行。该方法可以独立执行，也可以结合本申请任意一个其他实施例一起被执行。如图7所示，该方法可以包括如下步骤：
步骤701，接收终端设备在多个随机接入时机上重复发送的第一随机接入消息。
在本申请实施例中，终端设备能够在多个随机接入时机RO上向网络设备重复发送第一随机接入消息Msg1。其中，该多个RO中发送的第一随机接入消息是相同的。网络设备在接收到该Msg1之后，能够向终端设备发送第二随机接入消息Msg2。
需要说明的是，在本申请实施例中，第一随机接入消息Msg1为随机接入前导序列，第二随机接入消息Msg2为随机接入响应RAR。
在一些实施方式中，网络设备可以在该多个RO的最后一个RO上进行Msg1(preamble)的合并相关检测。
网络设备在接收到Msg1之后，计算RA-RNTI，并向终端设备发送采用该RA-RNTI加扰的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，该多个随机接入时机RO，可以是网络设备预先配置的，也可以是协议预先约定的，
作为一种可能的实现方式，该多个随机接入时机RO对应时域上的多个时隙，该多个时隙可以是连续的，也可以是离散的，此处不作限定。
步骤702，根据该多个随机接入时机中的目标随机接入时机的参数，确定该终端设备的随机接入无线网络临时标识RA-RNTI。
在本申请实施例中，网络设备设备能够根据配置的该多个RO中的一个，确定该终端设备的RA-RATI，用以对发送的PDCCH DCI format1_0进行加扰。
在一些实施方式中，网络设备能够根据协议的约定，确定出计算该RA-RNTI的随机接入时机RO。
在一些实施方式中，网络设备自己确定计算该RA-RNTI的随机接入时机RO，并向终端设备发送指示信息，该指示信息用于指示该目标随机接入时机RO。
在一些实施方式中，网络设备能够根据该多个RO所在的系统帧的系统帧号SFN，确定出计算该RA-RNTI的随机接入时机RO。
在本申请实施例中，RA-RNTI的计算公式为：
RA-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id。
其中，参数的含义如下表所示：
Figure PCTCN2022093408-appb-000006
在一些可能的实现方式中，上述方法还可以包括：
步骤703，向该终端设备发送采用该RA-RNTI加扰的第二随机接入消息或者物理下行控制信道PDCCH。
在本申请实施例中，网络设备在接收到Msg1之后，能够向终端设备发送采用前述步骤确定的RA-RNTI进行加扰的Msg2或者PDCCH。
在一些实施方式中，网络设备能够采用该RA-RNTI作为扰码加扰PDCCH DCI format 1_0。
综上，通过接收终端设备发送的辅小区组失败信息，该辅小区组失败信息中包括条件主辅小区PSCell添加或改变的相关信息，使得在发生辅小区组失败时，网络设备还能够获取条件主辅小区PSCell添加或改变的相关信息，使得网络设备能够更全面地获取辅小区组失败的相关信息，进而能够更准确地解析发生辅小区组失败的原因，有效提高系统的通信效率。
与上述几种实施例提供的随机接入方法相对应，本申请还提供一种随机接入装置，由于本申请实施例提供的随机接入装置与上述几种实施例提供的方法相对应，因此在随机接入方法的实施方式也适用于下述实施例提供的随机接入装置，在下述实施例中不再详细描述。
请参见图8，图8为本申请实施例提供的一种随机接入装置的结构示意图。
如图8所示，该随机接入装置800包括：收发单元810和处理单元820，其中：
收发单元810，用于在多个随机接入时机上向网络设备重复发送第一随机接入消息；
处理单元820，用于根据该多个随机接入时机中的一个，确定该终端设备的随机接入无线网络临时标识RA-RNTI；
该收发单元810，还用于采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
可选地，该处理单元820具体用于：
根据协议的约定，确定该多个随机接入时机中的目标随机接入时机；
根据该目标随机接入时机，确定该终端设备的RA-RNTI。
可选地，该目标随机接入时机的序号与该多个随机接入时机的个数存在关联关系。
可选地，该处理单元820具体用于：
接收该网络设备发送的指示信息，该指示信息用于确定该多个随机接入时机中的目标随机接入时机；
根据该目标随机接入时机，确定该终端设备的RA-RNTI。
可选地，该处理单元820具体用于：
根据该多个随机接入时机所在的系统帧的系统帧号SFN，确定该多个随机接入时机中的目标随机接入时机；
根据该目标随机接入时机，确定该终端设备的RA-RNTI。
可选地，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
本实施例的随机接入装置，可以通过在多个随机接入时机上向网络设备重复发送第一随机接入消息，根据该多个随机接入时机中的一个，确定该终端设备的随机接入无线网络临时标识RA-RNTI，采用该RA-RNTI检测该网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH，使得终端设备在进行PRACH重复发送时能够使用一个RA-RNTI来进行PDCCH盲检，有效降低了终端设备盲检的复杂度，减少终端设备的能耗，提高系统的通信效率。
请参见图9，图9为本申请实施例提供的一种随机接入装置的结构示意图。
如图9所示，该随机接入装置900包括：收发单元910和处理单元920，其中：
收发单元910，用于接收终端设备在多个随机接入时机上重复发送的第一随机接入消息；
处理单元920，用于根据该多个随机接入时机中的一个，确定该终端设备的随机接入无线网络临时标识RA-RNTI；
该收发单元910，还用于向该终端设备发送采用该RA-RNTI加扰的第二随机接入消息或者物理下行控制信道PDCCH。
可选地，该处理单元920具体用于：
根据协议的约定，确定该多个随机接入时机中的目标随机接入时机；
根据该目标随机接入时机，确定该终端设备的RA-RNTI。
可选地，该目标随机接入时机的序号与该多个随机接入时机的个数存在关联关系。
可选地，该处理单元920具体用于：
确定该多个随机接入时机中的目标随机接入时机；
根据该目标随机接入时机，确定该终端设备的RA-RNTI；
向该终端设备发送指示信息，该指示信息用于指示该目标随机接入时机。
可选地，该处理单元920具体用于：
根据该多个随机接入时机所在的系统帧的系统帧号SFN，确定该多个随机接入时机中的目标随机接入时机；
根据该目标随机接入时机，确定该终端设备的RA-RNTI。
可选地，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
本实施例的随机接入装置，可以通过接收终端设备发送的辅小区组失败信息，该辅小区组失败信息中包括条件主辅小区PSCell添加或改变的相关信息，使得在发生辅小区组失败时，网络设备还能够获取条件主辅小区PSCell添加或改变的相关信息，使得网络设备能够更全面地获取辅小区组失败的相关信息，进而能够更准确地解析发生辅小区组失败的原因，有效提高系统的通信效率。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和存储器，存储器中存储有计算机程序，处理器执行所述存储器中存储的计算机程序，以使装置执行图2至图5实施例所示的方法。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和存储器，存储器中存储有计算机程序，处理器执行所述存储器中存储的计算机程序，以使装置执行图7实施例所示的方法。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和接口电路，接口电路，用于接收代码指令并传输至处理器，处理器，用于运行所述代码指令以执行图2至图5实施例所示的方法。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和接口电路，接口电路，用于接收代码指令并传输至处理器，处理器，用于运行所述代码指令以执行图7实施例所示的方法。
请参见图10，图10是本申请实施例提供的另一种随机接入装置的结构示意图。随机接入装置1000可以是网络设备，也可以是终端设备，也可以是支持网络设备实现上述方法的芯片、芯片系统、或处理器等，还可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
随机接入装置1000可以包括一个或多个处理器1001。处理器1001可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对随机接入装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行计算机程序，处理计算机程序的数据。
可选的，随机接入装置1000中还可以包括一个或多个存储器1002，其上可以存有计算机程序1003，处理器1001执行计算机程序1003，以使得随机接入装置1000执行上述方法实施例中描述的方法。计算机程序1003可能固化在处理器1001中，该种情况下，处理器1001可能由硬件实现。
可选的，存储器1002中还可以存储有数据。随机接入装置1000和存储器1002可以单独设置，也可以集成在一起。
可选的，随机接入装置1000还可以包括收发器1005、天线1006。收发器1005可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器1005可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。
可选的，随机接入装置1000中还可以包括一个或多个接口电路1007。接口电路1007用于接收代码指令并传输至处理器1001。处理器1001运行代码指令以使随机接入装置1000执行上述方法实施例中描述的方法。
在一种实现方式中，处理器1001中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电 路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中，随机接入装置1000可以包括电路，电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的随机接入装置可以是网络设备或者终端设备，但本申请中描述的随机接入装置的范围并不限于此，而且随机接入装置的结构可以不受图8-图9的限制。随机接入装置可以是独立的设备或者可以是较大设备的一部分。例如随机接入装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
对于随机接入装置可以是芯片或芯片系统的情况，可参见图11所示的芯片的结构示意图。图11所示的芯片包括处理器1101和接口1102。其中，处理器1101的数量可以是一个或多个，接口1102的数量可以是多个。
对于芯片用于实现本申请实施例中网络设备的功能的情况：
接口1102，用于代码指令并传输至处理器；
处理器1101，用于运行代码指令以执行如图2至图5的方法。
对于芯片用于实现本申请实施例中终端设备的功能的情况：
接口1102，用于代码指令并传输至处理器；
处理器1101，用于运行代码指令以执行如图7的方法。
可选的，芯片还包括存储器1103，存储器1103用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现的功能，但这种实现不应被理解为超出本申请实施例保护的范围。
本申请实施例还提供一种通信系统，该系统包括前述图8-图9实施例中作为终端设备的随机接入装置和作为网络设备的随机接入装置，或者，该系统包括前述图10实施例中作为终端设备的随机接入 装置和作为网络设备的随机接入装置。
本申请还提供一种可读存储介质，其上存储有指令，该指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行计算机程序时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机程序可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也表示先后顺序。
本申请中的至少一个还可以描述为一个或多个，多个可以是两个、三个、四个或者更多个，本申请不做限制。在本申请实施例中，对于一种技术特征，通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征，该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
本申请中各表所示的对应关系可以被配置，也可以是预定义的。各表中的信息的取值仅仅是举例，可以配置为其他值，本申请并不限定。在配置信息与各参数的对应关系时，并不一定要求必须配置各表中示意出的所有对应关系。例如，本申请中的表格中，某些行示出的对应关系也可以不配置。又例如，可以基于上述表格做适当的变形调整，例如，拆分，合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称，其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时，也可以采用其他的数据结构，例如可以采用数组、队列、容器、栈、线性表、指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
应当理解，可以使用上面所示的各种形式的流程，重新排序、增加或删除步骤。例如，本申请实施例中记载的各步骤可以并行地执行也可以顺序地执行也可以不同的次序执行，只要能够实现本发明公开的技术方案所期望的结果，本文在此不进行限制。
上述具体实施方式，并不构成对本发明保护范围的限制。本领域技术人员应该明白的是，根据设计要求和其他因素，可以进行各种修改、组合、子组合和替代。任何在本发明的精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明保护范围之内。

Claims (30)

  1. 一种随机接入方法，其特征在于，所述方法由终端设备执行，所述方法包括：
    在多个随机接入时机上向网络设备重复发送第一随机接入消息；
    根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
    采用所述RA-RNTI检测所述网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
    根据协议的约定，确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  3. 根据权利要求2所述的方法，其特征在于，所述目标随机接入时机的序号与所述多个随机接入时机的个数存在关联关系。
  4. 根据权利要求1所述的方法，其特征在于，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
    接收所述网络设备发送的指示信息，所述指示信息用于确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  5. 根据权利要求1所述的方法，其特征在于，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
    根据所述多个随机接入时机所在的系统帧的系统帧号SFN，确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  6. 根据权利要求5所述的方法，其特征在于，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
  7. 一种随机接入方法，其特征在于，所述方法由网络设备执行，所述方法包括：
    接收终端设备在多个随机接入时机上重复发送的第一随机接入消息；
    根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
    向所述终端设备发送采用所述RA-RNTI加扰的第二随机接入消息或者物理下行控制信道PDCCH。
  8. 根据权利要求7所述的方法，其特征在于，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
    根据协议的约定，确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  9. 根据权利要求8所述的方法，其特征在于，所述目标随机接入时机的序号与所述多个随机接入时机的个数存在关联关系。
  10. 根据权利要求7所述的方法，其特征在于，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
    确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI；
    向所述终端设备发送指示信息，所述指示信息用于指示所述目标随机接入时机。
  11. 根据权利要求7所述的方法，其特征在于，所述根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：
    根据所述多个随机接入时机所在的系统帧的系统帧号SFN，确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  12. 根据权利要求11所述的方法，其特征在于，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
  13. 一种随机接入装置，其特征在于，所述装置应用于终端设备，所述装置包括：
    收发单元，用于在多个随机接入时机上向网络设备重复发送第一随机接入消息；
    处理单元，用于根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
    所述收发单元，还用于采用所述RA-RNTI检测所述网络设备发送的第二随机接入消息或者物理下行控制信道PDCCH。
  14. 根据权利要求13所述的装置，其特征在于，所述处理单元具体用于：
    根据协议的约定，确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  15. 根据权利要求14所述的装置，其特征在于，所述目标随机接入时机的序号与所述多个随机接入时机的个数存在关联关系。
  16. 根据权利要求13所述的装置，其特征在于，所述处理单元具体用于：
    接收所述网络设备发送的指示信息，所述指示信息用于确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  17. 根据权利要求13所述的装置，其特征在于，所述处理单元具体用于：
    根据所述多个随机接入时机所在的系统帧的系统帧号SFN，确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  18. 根据权利要求17所述的装置，其特征在于，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
  19. 一种随机接入装置，其特征在于，所述装置应用于网络设备，所述装置包括：
    收发单元，用于接收终端设备在多个随机接入时机上重复发送的第一随机接入消息；
    处理单元，用于根据所述多个随机接入时机中的一个，确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
    所述收发单元，还用于向所述终端设备发送采用所述RA-RNTI加扰的第二随机接入消息或者物理下行控制信道PDCCH。
  20. 根据权利要求19所述的装置，其特征在于，所述处理单元具体用于：
    根据协议的约定，确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  21. 根据权利要求20所述的装置，其特征在于，所述目标随机接入时机的序号与所述多个随机接入时机的个数存在关联关系。
  22. 根据权利要求19所述的装置，其特征在于，所述处理单元具体用于：
    确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI；
    向所述终端设备发送指示信息，所述指示信息用于指示所述目标随机接入时机。
  23. 根据权利要求19所述的装置，其特征在于，所述处理单元具体用于：
    根据所述多个随机接入时机所在的系统帧的系统帧号SFN，确定所述多个随机接入时机中的目标随机接入时机；
    根据所述目标随机接入时机，确定所述终端设备的RA-RNTI。
  24. 根据权利要求23所述的装置，其特征在于，相邻系统帧内的两组多个随机接入时机中的目标随机接入时机的序号不同。
  25. 一种通信装置，其特征在于，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求1至6中任一项所述的方法。
  26. 一种通信装置，其特征在于，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求7至12中任一项所述的方法。
  27. 一种通信装置，其特征在于，包括：处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器，用于运行所述代码指令以执行如权利要求1至6中任一项所述的方法。
  28. 一种通信装置，其特征在于，包括：处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器，用于运行所述代码指令以执行如权利要求7至12中任一项所述的方法。
  29. 一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使如权利要求1至6中任一项所述的方法被实现。
  30. 一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使如权利要求7至12中任一项所述的方法被实现。
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WO2021073412A1 (en) * 2019-10-15 2021-04-22 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method and apparatus of determining ra-rnti and user equipment
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CN114080047A (zh) * 2020-08-13 2022-02-22 维沃移动通信有限公司 随机接入的信号传输方法、终端及网络侧设备

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