WO2020216332A1 - 数据重传方法、接收方法、终端及网络设备 - Google Patents

数据重传方法、接收方法、终端及网络设备 Download PDF

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Publication number
WO2020216332A1
WO2020216332A1 PCT/CN2020/086730 CN2020086730W WO2020216332A1 WO 2020216332 A1 WO2020216332 A1 WO 2020216332A1 CN 2020086730 W CN2020086730 W CN 2020086730W WO 2020216332 A1 WO2020216332 A1 WO 2020216332A1
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Prior art keywords
pusch
random access
request message
terminal
mcs
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PCT/CN2020/086730
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English (en)
French (fr)
Inventor
倪吉庆
周伟
王桂珍
左君
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***通信有限公司研究院
***通信集团有限公司
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Publication of WO2020216332A1 publication Critical patent/WO2020216332A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access

Definitions

  • the present disclosure relates to the field of communication technology, in particular to a data retransmission method, receiving method, terminal and network equipment.
  • the 4-step RACH process of the terminal initiating Contention-based Random Access is roughly as follows:
  • the terminal sends an uplink signal containing a preamble (preamble sequence, preamble or pilot) on the resources of the physical random access channel (PRACH, Physical Random Access Channel), which is called Msg1;
  • a preamble preamble sequence, preamble or pilot
  • PRACH Physical Random Access Channel
  • the terminal receives the random access response (RAR, Random Access Response) sent by the base station side, which is called Msg2;
  • the terminal sends uplink data on the uplink time-frequency resource indicated by the RAR, which is called Msg3;
  • the terminal receives the downlink data sent by the base station side.
  • the downlink data contains contention resolution related information, which is called Msg4.
  • the random access process can be 2-step RACH, that is, Msg1 and Msg3 in the original 4-step RACH are sent together in one step, called MsgA; Msg2 and Msg4 are further Merged into MsgB, the specific message content may change.
  • the scheduling mechanism in the related technology can be used to reschedule the Msg3 through DCI, so as to realize the hybrid automatic repeat (HARQ) mechanism.
  • HARQ hybrid automatic repeat
  • MsgA includes preamble and PUSCH. How to ensure a higher probability of successful PUSCH transmission is the key to the application of this technology.
  • the initial transmission of PUSCH is determined by high-level parameter configuration. The first transmission is triggered by different events, so the HARQ mechanism in related technologies cannot be applied to MsgA in 2-step RACH PUSCH transmission.
  • the present disclosure provides a data retransmission method, receiving method, terminal and network equipment. Realize the retransmission of PUSCH in MsgA in RACH, and improve the reliability of data transmission.
  • the embodiments of the present disclosure provide the following solutions:
  • a data retransmission method applied to a terminal including:
  • the random access request message includes a pilot and a physical uplink shared channel PUSCH;
  • receiving the random access response message issued by the network device includes:
  • the PUSCH retransmission indication information is sent through the MCS field of the modulation and coding scheme multiplexing the MAC CE signaling, or sent through the redundancy version RV field.
  • resending the PUSCH in the random access request message includes:
  • the PUSCH retransmission indication information is located in the first bit field of the MAC Payload in the MAC CE.
  • resending the PUSCH in the random access request message includes:
  • bit value of the first bit field is the first value
  • the PUSCH in the random access request message is sent on the scheduled time-frequency resource according to the same MCS level or the scheduled MCS level;
  • the version is determined according to preset rules.
  • the embodiment of the present disclosure also provides a data receiving method, which is applied to a network device, and the method includes: receiving a random access request message of a random access procedure sent by a terminal, the random access request message including a pilot and a physical Uplink shared channel PUSCH;
  • sending a random access response message to the terminal includes:
  • the PUSCH retransmission indication information is indicated by multiplexing the modulation and coding scheme MCS field of the MAC CE signaling, or indicated by the redundancy version RV field.
  • receiving the PUSCH resent by the terminal according to the random access response message includes:
  • the receiving terminal On the time-frequency resource of the retransmitted PUSCH, the receiving terminal re-transmits the different versions of the PUSCH in the random access request message by multiplexing the MCS domain indication, and the MCS remains unchanged; or the redundant version RV indicates the For the different versions of the PUSCH in the random access request message sent, the MCS remains unchanged or determined according to the MCS domain indication.
  • the PUSCH retransmission indication information is located in the first bit field of the MAC Payload in the MAC CE.
  • receiving the PUSCH resent by the terminal according to the random access response message includes:
  • the receiving terminal On the time-frequency resource of the retransmitted PUSCH, when the bit value of the first bit field is the first value, the receiving terminal retransmits the random access on the scheduled time-frequency resource according to the scheduled MCS level.
  • the PUSCH in the incoming request message; or the receiving terminal sends the random access on the scheduled time-frequency resource according to the same MCS level or the scheduled MCS level when the bit value of the first bit field is the second value
  • the PUSCH in the incoming request message; the version of the PUSCH is determined according to a preset rule.
  • the embodiment of the present disclosure also provides a terminal, including:
  • the transceiver is configured to send a random access request message to a network device, where the random access request message includes a pilot and a physical uplink shared channel PUSCH; receive a random access response message issued by the network device; Access response message, resending the PUSCH in the random access request message.
  • the transceiver when the transceiver receives the random access response message issued by the network device, it is specifically configured to: receive the MAC CE signaling of the medium access control unit issued by the network device, and the MAC CE signaling carries Retransmit the PUSCH time-frequency resource and PUSCH retransmission indication information.
  • the PUSCH retransmission indication information is sent through the MCS field of the modulation and coding scheme multiplexing the MAC CE signaling, or sent through the redundancy version RV field.
  • the transceiver when the transceiver resends the PUSCH in the random access request message according to the random access response message, it is specifically used to:
  • the PUSCH retransmission indication information is located in the first bit field of the MAC Payload in the MAC CE.
  • the transceiver when the transceiver resends the PUSCH in the random access request message according to the random access response message, it is specifically used to:
  • bit value of the first bit field is the first value
  • the PUSCH in the random access request message is sent on the scheduled time-frequency resource according to the same MCS level or the scheduled MCS level;
  • the version is determined according to preset rules.
  • the embodiment of the present disclosure also provides a network device, including:
  • the transceiver receives the random access request message of the random access procedure sent by the terminal, where the random access request message includes the pilot and the physical uplink shared channel PUSCH; sends a random access response message to the terminal; Access to the PUSCH retransmitted by the response message.
  • the transceiver when the transceiver sends a random access response message to the terminal, it is specifically used for:
  • the PUSCH retransmission indication information is indicated by multiplexing the modulation and coding scheme MCS field of the MAC CE signaling, or indicated by the redundancy version RV field.
  • the transceiver when the transceiver receives the PUSCH re-sent by the terminal according to the random access response message, it is specifically used to:
  • the receiving terminal On the time-frequency resource of the retransmitted PUSCH, the receiving terminal re-transmits the different versions of the PUSCH in the random access request message by multiplexing the MCS domain indication, and the MCS remains unchanged; or the redundant version RV indicates the For the different versions of the PUSCH in the random access request message sent, the MCS remains unchanged or determined according to the MCS domain indication.
  • the PUSCH retransmission indication information is located in the first bit field of the MAC Payload in the MAC CE.
  • the transceiver when the transceiver receives the PUSCH re-sent by the terminal according to the random access response message, it is specifically used to:
  • the receiving terminal On the time-frequency resource of the retransmitted PUSCH, when the bit value of the first bit field is the first value, the receiving terminal retransmits the random access on the scheduled time-frequency resource according to the scheduled MCS level.
  • the PUSCH in the incoming request message; or the receiving terminal sends the random access on the scheduled time-frequency resource according to the same MCS level or the scheduled MCS level when the bit value of the first bit field is the second value
  • the PUSCH in the incoming request message; the version of the PUSCH is determined according to a preset rule.
  • the embodiment of the present disclosure further provides a terminal, including a processor and a memory storing a computer program, and the computer program executes the method applied to the terminal as described above when the computer program is run by the processor.
  • the embodiment of the present disclosure also provides a communication device, including a processor and a memory storing a computer program, and when the computer program is executed by the processor, the method applied to the communication device as described above is executed.
  • Embodiments of the present disclosure also provide a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method described above.
  • the random access request message includes a pilot and a physical uplink shared channel PUSCH; receiving a random access response message issued by the network device; In the random access response message, resending the PUSCH in the random access request message. Realize the retransmission of PUSCH in MsgA in RACH, and improve the reliability of data transmission.
  • Figure 1 is a schematic diagram of a four-step random access process
  • Figure 2 is a schematic diagram of a two-step random access process
  • FIG. 3 is a schematic flowchart of the data retransmission method of the present disclosure
  • Figure 4 is a schematic diagram of the information format of MAC payload
  • FIG. 5 is a schematic flowchart of the data receiving method of the present disclosure
  • Figure 6 is a schematic diagram of the terminal architecture of the present disclosure.
  • Figure 7 is a schematic diagram of the network device architecture of the present disclosure.
  • an embodiment of the present disclosure provides a data retransmission method applied to a terminal, and the method includes:
  • Step 31 Send a random access request message to the network device, where the random access request message includes the pilot and PUSCH (Physical Uplink Shared Channel);
  • PUSCH Physical Uplink Shared Channel
  • Step 32 Receive a random access response message issued by the network device
  • Step 33 Retransmit the PUSCH in the random access request message according to the random access response message.
  • the terminal sends MsgA
  • the terminal sends the preamble (pilot, preamble or preamble sequence) and PUSCH
  • the base station side detects the preamble successfully, detects the PUSCH transmission is unsuccessful, you can consider indicating the terminal Retransmit the data part to retransmit and merge;
  • the foregoing method may include:
  • the terminal sends MsgA to the network equipment, including: preamble and PUSCH; sends the preamble on the RACH occasion (transmission opportunity), and sends the data on the PUSCH occasion;
  • the base station detects MsgA and detects the preamble, but the PUSCH is not detected successfully;
  • the base station sends a downlink message, instructing the terminal to retransmit the data sent on the PUSCH occasion on the scheduled time-frequency resource;
  • the user receives the downlink message and resends the original version or a different version of the data according to the scheduling information in the message;
  • the base station receives the data re-sent by the user and performs merging processing. If the reception is successful, the subsequent message transmission or completion operation is continued; if the reception is unsuccessful, the user is scheduled for retransmission through DCI.
  • Step 3 that is, the base station sends a downlink message to instruct the terminal to retransmit the data.
  • step 32 may include:
  • Step 321 Receive media access control unit MAC CE signaling issued by the network device, where the MAC CE signaling carries time-frequency resources for retransmission of the PUSCH and PUSCH retransmission indication information.
  • the PUSCH retransmission indication information is sent through an MCS (Modulation and Coding Scheme) field multiplexing the MAC CE signaling, or sent through a redundancy version RV field.
  • MCS Modulation and Coding Scheme
  • step 33 may include: on the time-frequency resource of the retransmitted PUSCH, by multiplexing the MCS domain indication, retransmitting different versions of the PUSCH in the random access request message, the MCS remains unchanged; or through redundancy
  • the version RV indication is to resend the different versions of the PUSCH in the random access request message, and the MCS remains unchanged or determined according to the MCS domain indication.
  • the PUSCH retransmission indication multiplexes the MCS field of the modulation and coding scheme of the MAC CE signaling, which is specifically designed in Table 2 and Table 3 below.
  • the 4bits indication is 1100, it means that the retransmitted data uses data with RV version 0; when the 4bits indication is 1110, it means that the retransmitted data uses data with RV version 2; when the 4bits indicates 0010, it means non-retransmitted data.
  • users use MCS index 2 for data transmission.
  • the PUSCH retransmission indication is located in the RV field of the signaling redundancy version of the MAC CE, and is specifically designed in Table 4 and Table 5 below.
  • RAR UL grant field # Of bits Frequency hopping flag 1 Msg3 PUSCH frequency RA 14 Msg3 PUSCH time RA 4 MCS (RV multiplexed MCS domain) 4 TPC command for Msg3 PUSCH 3 CSI request 1
  • the MCS field is used in UL grant in RAR MAC-CE to realize retransmission of RV indication
  • the PUSCH retransmission indication information is located in the first bit field of the MAC Payload in the MAC CE.
  • step 33 may include:
  • Step 331 When the bit value of the first bit field is the first value, resend the PUSCH in the random access request message on the scheduled time-frequency resource according to the scheduled MCS level;
  • the PUSCH in the random access request message is sent on the scheduled time-frequency resource according to the same MCS level or the scheduled MCS level;
  • the version is determined according to preset rules.
  • the MAC payload information is shown in Figure 4.
  • the terminal When the "retransmission indication bit" is set to 1, it means that the terminal needs to retransmit the data in MsgA, and the specific transmission version can be a predetermined value.
  • the predetermined RV is 0, and when the "retransmission indication bit" in the received message is set to 1, the terminal retransmits the RV0 version of the data in MsgA. At this time, the terminal ignores the MCS field of the UL grant.
  • the above-mentioned embodiments of the present disclosure provide a PUSCH retransmission mechanism in MsgA to improve the reliability of data transmission; through the MCS field in RAR MAC-CE to achieve instructions, different RV version transmissions can be supported, and MCS scheduling in related technologies Function.
  • an embodiment of the present disclosure also provides a data receiving method applied to a network device, and the method includes:
  • Step 51 Receive a random access request message of a random access process sent by a terminal, where the random access request message includes a pilot and a physical uplink shared channel PUSCH;
  • Step 52 Send a random access response message to the terminal
  • Step 53 Receive the PUSCH re-sent by the terminal according to the random access response message.
  • step 52 may specifically include:
  • the PUSCH retransmission indication information is indicated by multiplexing the MCS field of the MAC CE signaling, or indicated by the redundancy version RV field.
  • step 53 may specifically include: on the time-frequency resource of the retransmitted PUSCH, the receiving terminal reuses the MCS domain indication to retransmit different versions of the PUSCH in the random access request message, and the MCS remains unchanged; or With the RV indication of the redundancy version, the MCS of the different versions of the PUSCH in the retransmitted random access request message remains unchanged or determined according to the MCS domain indication.
  • the PUSCH retransmission indication information is located in the first bit field of the MAC Payload in the MAC CE.
  • step 53 may specifically include: on the time-frequency resource of the retransmitted PUSCH, when the bit value of the first bit field of the receiving terminal is the first value, in the scheduled time-frequency resource according to the scheduled MCS level
  • the method on the network device side is a method corresponding to the method on the terminal side described above, and all implementation manners in the above method embodiments are applicable to the method embodiments, and the same technical effects can also be achieved.
  • an embodiment of the present disclosure further provides a terminal 60, including:
  • the transceiver 61 is configured to send a random access request message to a network device, where the random access request message includes a pilot and a physical uplink shared channel PUSCH; receive a random access response message issued by the network device; Random access response message, resending the PUSCH in the random access request message.
  • the transceiver 61 when the transceiver 61 receives the PUSCH retransmission instruction issued by the network device, it is specifically configured to: receive the MAC CE signaling issued by the network device and the MAC CE signal. Let the time-frequency resource for retransmission of the PUSCH and PUSCH retransmission indication information be carried.
  • the PUSCH retransmission indication information is sent through the MCS field of the modulation and coding scheme multiplexing the MAC CE signaling, or sent through the redundancy version RV field.
  • the transceiver when the transceiver resends the PUSCH in the random access request message according to the random access response message, it is specifically used to:
  • the PUSCH retransmission indication information is located in the first bit field of the MAC Payload in the MAC CE.
  • the transceiver when the transceiver resends the PUSCH in the random access request message according to the random access response message, it is specifically used to:
  • bit value of the first bit field is the first value
  • the PUSCH in the random access request message is sent on the scheduled time-frequency resource according to the same MCS level or the scheduled MCS level;
  • the version is determined according to preset rules.
  • the terminal is a terminal corresponding to the method shown in FIG. 3 above, and all implementation manners in the above method embodiment are applicable to the terminal embodiment, and the same technical effect can also be achieved.
  • the terminal may further include: a processor 62, a memory 63, the transceiver 61 and the processor 62, and the transceiver 61 and the memory 63 can all be connected through a bus interface, and the functions of the transceiver 61 can be controlled by the processor 62 Implementation, the function of the processor 62 may also be implemented by the transceiver 61.
  • an embodiment of the present disclosure further provides a network device 70, including:
  • the transceiver 71 receives a random access request message of a random access procedure sent by a terminal, where the random access request message includes a pilot and a physical uplink shared channel PUSCH; sends a random access response message to the terminal; The PUSCH retransmitted by the random access response message.
  • the transceiver when the transceiver sends a random access response message to the terminal, it is specifically used for:
  • the PUSCH retransmission indication information is indicated by multiplexing the modulation and coding scheme MCS field of the MAC CE signaling, or indicated by the redundancy version RV field.
  • the transceiver when the transceiver receives the PUSCH re-sent by the terminal according to the random access response message, it is specifically used to:
  • the receiving terminal On the time-frequency resource of the retransmitted PUSCH, the receiving terminal re-transmits the different versions of the PUSCH in the random access request message by multiplexing the MCS domain indication, and the MCS remains unchanged; or the redundant version RV indicates the For the different versions of the PUSCH in the random access request message sent, the MCS remains unchanged or determined according to the MCS domain indication.
  • the PUSCH retransmission indication information is located in the first bit field of the MAC Payload in the MAC CE.
  • the transceiver when the transceiver receives the PUSCH retransmitted by the terminal according to the random access response message, it is specifically configured to: on the time-frequency resource of the retransmitted PUSCH, the receiving terminal is in the first bit field When the bit value of is the first value, the PUSCH in the random access request message retransmitted on the scheduled time-frequency resource according to the scheduled MCS level; or the bit value of the receiving terminal in the first bit field is For the second value, the PUSCH in the random access request message sent on the scheduled time-frequency resource according to the same MCS level or the scheduled MCS level; the version of the PUSCH is determined according to a preset rule.
  • the network device is a device corresponding to the method on the network device side described above, and all implementation manners in the above method embodiments are applicable to the embodiment of the network device, and the same technical effects can also be achieved.
  • the network device may further include: a processor 72, a memory 73, the transceiver 71 and the processor 72, and the transceiver 71 and the memory 73 can all be connected through a bus interface, and the functions of the transceiver 71 can be determined by the processor. 72, the function of the processor 72 can also be implemented by the transceiver 71.
  • An embodiment of the present disclosure further provides a communication device, which includes a processor and a memory storing a computer program, and the computer program executes the method described above when the computer program is executed by the processor.
  • the communication device is a terminal
  • the method on the terminal side shown in FIG. 3 above is executed. All the implementation manners in the above method embodiments are applicable to this embodiment, and the same technical effect can be achieved.
  • the communication device is a network device
  • the method on the network device side shown in FIG. 5 is executed. All the implementation manners in the foregoing method embodiment are applicable to this embodiment, and the same technical effect can be achieved.
  • Embodiments of the present disclosure also provide a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method described above. All the implementation manners in the foregoing method embodiment are applicable to this embodiment, and the same technical effect can also be achieved.
  • 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 technical solution of the present disclosure essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including several
  • the instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute 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.
  • each component or each step can be decomposed and/or recombined.
  • decomposition and/or recombination should be regarded as equivalent solutions of the present disclosure.
  • the steps of performing the above series of processing can naturally be performed in a time sequence in the order of description, but do not necessarily need to be performed in a time sequence, and some steps can be performed in parallel or independently of each other.
  • the purpose of the present disclosure can also be realized by running a program or a group of programs on any computing device.
  • the computing device may be a well-known general-purpose device. Therefore, the purpose of the present disclosure can also be achieved only by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that, in the device and method of the present disclosure, obviously, each component or each step can be decomposed and/or recombined.
  • the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the units, modules, sub-units and sub-modules can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device) , DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and Disclosure of the described functions in other electronic units or combinations thereof.
  • ASIC application specific integrated circuits
  • DSP digital signal processor
  • DSP Device digital signal processing equipment
  • PLD Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • general-purpose processors controllers, microcontrollers, microprocessors, and Disclosure of the described functions in other electronic units or combinations thereof.
  • the technology described in the embodiments of the present disclosure can be implemented by 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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Abstract

本公开的实施例提供一种数据重传方法、接收方法、终端及网络设备,终端侧的方法包括:向网络设备发送随机接入流程的随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;接收所述网络设备下发的随机接入响应消息;根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH。

Description

数据重传方法、接收方法、终端及网络设备
相关申请的交叉引用
本申请主张在2019年4月25日在中国提交的中国专利申请No.201910339104.8的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域,特别是指一种数据重传方法、接收方法、终端及网络设备。
背景技术
相关技术中,如图1所示,终端发起基于竞争的随机接入(CBRA,Contention-based Random Access)的4-step RACH流程大致如下:
1)终端在物理随机接入信道(PRACH,Physical Random Access Channel)的资源上发送包含Preamble(前导序列、前导码或者导频)的上行信号,称为Msg1;
2)终端接收基站侧发送的随机接入响应(RAR,Random Access Response),称为Msg2;
3)终端在RAR指示的上行时频资源上发送上行数据,称为Msg3;
4)终端接收基站侧发送的下行数据,该下行数据包含竞争解决相关信息,称为Msg4。
为了降低随机接入时延,如图2所示,随机接入流程可以为2-step RACH,即将原4-step RACH中的Msg1和Msg3集中在一步发送,称为MsgA;Msg2和Msg4则进一步合并为MsgB,具体的消息内容可能会有变化。
原4-step RACH流程,Msg3的传输,是通过RAR MAC-CE中的UL Grant调度的,具体的信息见表1。
表1
RAR UL grant field # of bits
Frequency hopping flag 1
Msg3 PUSCH frequency RA 14
Msg3 PUSCH time RA 4
MCS 4
TPC command for Msg3 PUSCH 3
CSI request 1
如果Msg3传输不成功,可以通过相关技术中的调度机制,通过DCI重新调度Msg3,从而实现混合自动重传(HARQ)机制。
2-step RACH中,MsgA包括前导码和PUSCH,如何保证更高的PUSCH传输成功概率,是该技术能够应用的关键。在2-step RACH中,PUSCH的初始传输时是通过高层参数配置确定的,第一次传输时由于不同的事件触发的,因此相关技术中的HARQ机制不能应用于2-step RACH中的MsgA中PUSCH的传输。
发明内容
本公开提供了一种数据重传方法、接收方法、终端及网络设备。实现RACH中的MsgA中PUSCH的重传,提升数据的传输可靠性。
为解决上述技术问题,本公开的实施例提供如下方案:
一种数据重传方法,应用于终端,所述方法包括:
向网络设备发送随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;
接收所述网络设备下发的随机接入响应消息;
根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH。
其中,接收所述网络设备下发的随机接入响应消息,包括:
接收所述网络设备下发的介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域发送,或者,通过冗余版本RV域发送。
其中,根据所述随机接入响应消息,重新发送所述随机接入请求消息中 的PUSCH,包括:
在所述重传PUSCH的时频资源上,通过复用MCS域指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者
通过冗余版本RV指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
其中,根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH,包括:
当所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送所述随机接入请求消息中的PUSCH;
当所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
本公开的实施例还提供一种数据接收方法,应用于网络设备,所述方法包括:接收终端发送的随机接入流程的随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;
向终端发送随机接入响应消息;
接收终端根据所述随机接入响应消息重新发送的所述PUSCH。
其中,向终端发送随机接入响应消息,包括:
向终端发送介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域指示,或者,通过冗余版本RV域指示。
其中,接收终端根据所述随机接入响应消息重新发送的所述PUSCH,包括:
在所述重传PUSCH的时频资源上,接收终端通过复用MCS域指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者通过冗余版本RV指示,重新发送的随机接入请求消息中的PUSCH的不同版 本,MCS保持不变或根据MCS域指示确定。
其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
其中,接收终端根据所述随机接入响应消息重新发送的所述PUSCH,包括:
在所述重传PUSCH的时频资源上,接收终端在所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送的所述随机接入请求消息中的PUSCH;或者接收终端在所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送的所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
本公开的实施例还提供一种终端,包括:
收发机,用于向网络设备发送随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;接收所述网络设备下发的随机接入响应消息;根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH。
其中,所述收发机接收所述网络设备下发的随机接入响应消息时,具体用于:接收所述网络设备下发的介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域发送,或者,通过冗余版本RV域发送。
其中,所述收发机根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH时,具体用于:
在所述重传PUSCH的时频资源上,通过复用MCS域指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者
通过冗余版本RV指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
其中,所述收发机根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH时,具体用于:
当所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送所述随机接入请求消息中的PUSCH;
当所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
本公开的实施例还提供一种网络设备,包括:
收发机,接收终端发送的随机接入流程的随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;向终端发送随机接入响应消息;接收终端根据所述随机接入响应消息重新发送的所述PUSCH。
其中,所述收发机向终端发送随机接入响应消息时,具体用于:
向终端发送介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域指示,或者,通过冗余版本RV域指示。
其中,所述收发机接收终端根据所述随机接入响应消息重新发送的所述PUSCH时,具体用于:
在所述重传PUSCH的时频资源上,接收终端通过复用MCS域指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者通过冗余版本RV指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
其中,所述收发机接收终端根据所述随机接入响应消息重新发送的所述PUSCH时,具体用于:
在所述重传PUSCH的时频资源上,接收终端在所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送的所述随机接入请求消息中的PUSCH;或者接收终端在所述第一位比特域的比特值 为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送的所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
本公开的实施例还提供一种终端,包括:处理器、存储有计算机程序的存储器,所述计算机程序被处理器运行时,执行如上所述应用于终端的方法。
本公开的实施例还提供一种通信设备,包括:处理器、存储有计算机程序的存储器,所述计算机程序被处理器运行时,执行如上所述应用于通信设备的方法。
本公开的实施例还提供一种计算机可读存储介质,包括指令,当所述指令在计算机运行时,使得计算机执行如上所述的方法。
本公开的上述方案至少包括以下有益效果:
本公开的上述方案,通过向网络设备发送随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;接收所述网络设备下发的随机接入响应消息;根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH。实现RACH中的MsgA中PUSCH的重传,提升数据的传输可靠性。
附图说明
为了更清楚地说明本公开实施例的技术方案,下面将对本公开实施例的描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为四步随机接入流程的示意图;
图2为两步随机接入流程的示意图;
图3为本公开的数据重传方法的流程示意图;
图4为MAC payload的信息格式示意图;
图5为本公开的数据接收方法的流程示意图;
图6为本公开的终端架构示意图;
图7为本公开的网络设备架构示意图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。
如图3所示,本公开的实施例提供一种数据重传方法,应用于终端,所述方法包括:
步骤31,向网络设备发送随机接入请求消息,所述随机接入请求消息包括导频和PUSCH(物理上行共享信道);
步骤32,接收所述网络设备下发的随机接入响应消息;
步骤33,根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH。
该实施例中,两步RACH,终端发送MsgA,存在以下情况,终端发送preamble(导频、前导码或者前导码序列)和PUSCH,基站侧检测preamble成功,检测PUSCH传输不成功,可以考虑指示终端重发数据部分从而进行重传合并;
具体地,上述方法可以包括:
1)终端向网络设备发送MsgA,包括:preamble和PUSCH;在RACH occasion(传输机会)发送preamble,在PUSCH occasion上发送数据;
2)基站检测MsgA,检测到preamble,但PUSCH没有检测成功;
3)基站发送下行消息,指示终端在调度的时频资源上重传之前在PUSCH occasion上发送的数据;
4)用户接收下行消息,按照所述消息中的调度信息重新发送数据的原始版本或不同版本;
5)基站接收用户重新发送的数据,并进行合并处理,如果接收成功,则继续后续的消息发送或完成操作;如果接收不成功,则通过DCI调度用户进行重传。
上述流程的步骤3),即基站发送下行消息,指示终端重传数据。
本公开的一实施例中,步骤32可以包括:
步骤321,接收所述网络设备下发的介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
步骤321的一种实现方式中,所述PUSCH重传指示信息通过复用所述MAC CE信令的MCS(调制与编码方案)域发送,或者,通过冗余版本RV域发送。
相应地,步骤33可以包括:在所述重传PUSCH的时频资源上,通过复用MCS域指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者通过冗余版本RV指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
该实施例中,所述PUSCH重传指示复用所述MAC CE信令的调制与编码方案MCS域,具体如下表2和表3设计。例如,当4bits指示为1100时,表示重传数据采用RV版本为0的数据;当4bits指示为1110时,表示重传数据采用RV版本为2的数据;当4bits指示为0010时,表示非重传数据,用户采用MCS索引2进行数据传输。所述PUSCH重传指示位于所述MAC CE的信令冗余版本RV域,具体如下表4和表5设计。
表2 RAR中UL grant各功能域比特分配
RAR UL grant field # of bits
Frequency hopping flag 1
Msg3 PUSCH frequency RA 14
Msg3 PUSCH time RA 4
MCS(RV复用MCS域) 4
TPC command for Msg3 PUSCH 3
CSI request 1
表3 RAR MAC-CE中UL grant中利用MCS域实现重传RV指示
Figure PCTCN2020086730-appb-000001
Figure PCTCN2020086730-appb-000002
表4 RAR中UL grant各功能域比特分配(新增RV域,不限制增加新的功能域或减少已有的功能域)
RAR UL grant field # of bits
Frequency hopping flag 1
Msg3 PUSCH frequency RA 14
Msg3 PUSCH time RA 4
MCS 4
RV 32
TPC command for Msg3 PUSCH 3
CSI request 1
表5 通过RV域指示数据重传
值(2bits)  
00 RV=0
01 RV=1
10 RV=2
11 RV=3
步骤321的另一种实现方式中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
相应地,步骤33可以包括:
步骤331,当所述第一位比特域的比特值为第一值时,根据调度的MCS 等级在调度的时频资源上重新发送所述随机接入请求消息中的PUSCH;
当所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
该实施例中,MAC payload的信息如图4所示。
具体设计可以利用1比特预留位,重新命名为“重传指示位”:
当“重传指示位”置为0时,表示通过相关技术中的UL grant调度消息传输;
当“重传指示位”置为1时,表示终端需要重传MsgA中的数据,具体的传输版本可以为预定值。例如,预定RV为0,则收到消息中“重传指示位”置为1时,终端重传MsgA中数据的RV0版本。此时终端忽略UL grant的MCS域。
本公开的上述实施例提供了MsgA中PUSCH的重传机制,提升数据的传输可靠性;通过RAR MAC-CE中MCS域实现指示,可以支持不同的RV版本传输,且保留相关技术中的MCS调度的功能。
如图5所示,本公开的实施例还提供一种数据接收方法,应用于网络设备,所述方法包括:
步骤51,接收终端发送的随机接入流程的随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;
步骤52,向终端发送随机接入响应消息;
步骤53,接收终端根据所述随机接入响应消息重新发送的所述PUSCH。
其中,步骤52具体可以包括:
向终端发送介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的MCS域指示,或者,通过冗余版本RV域指示。
其中,步骤53具体可以包括:在所述重传PUSCH的时频资源上,接收终端通过复用MCS域指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者通过冗余版本RV指示,重新发送的随机接入 请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
其中,步骤53具体可以包括:在所述重传PUSCH的时频资源上,接收终端在所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送的所述随机接入请求消息中的PUSCH;或者接收终端在所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送的所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
需要说明的是,该网络设备侧的方法是与上述终端侧的方法对应的方法,上述方法实施例中所有实现方式均适用于该方法的实施例中,也能达到相同的技术效果。
如图6所示,本公开的实施例还提供一种终端60,包括:
收发机61,用于向网络设备发送随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;接收所述网络设备下发的随机接入响应消息;根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH。
其中,所述收发机61接收所述网络设备下发的所述PUSCH重传指示时,具体用于:接收所述网络设备下发的介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域发送,或者,通过冗余版本RV域发送。
其中,所述收发机根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH时,具体用于:
在所述重传PUSCH的时频资源上,通过复用MCS域指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者
通过冗余版本RV指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的 第一位比特域。
其中,所述收发机根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH时,具体用于:
当所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送所述随机接入请求消息中的PUSCH;
当所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
需要说明的是,该终端是与上述图3所示的方法对应的终端,上述方法实施例中所有实现方式均适用于该终端的实施例中,也能达到相同的技术效果。该终端还可以进一步包括:处理器62、存储器63,收发机61与处理器62,以及,收发机61与存储器63之间,均可以通过总线接口连接,收发机61的功能可以由处理器62实现,处理器62的功能也可以由收发机61实现。
如图7所示,本公开的实施例还提供一种网络设备70,包括:
收发机71,接收终端发送的随机接入流程的随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;向终端发送随机接入响应消息;接收终端根据所述随机接入响应消息重新发送的所述PUSCH。
其中,所述收发机向终端发送随机接入响应消息时,具体用于:
向终端发送介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域指示,或者,通过冗余版本RV域指示。
其中,所述收发机接收终端根据所述随机接入响应消息重新发送的所述PUSCH时,具体用于:
在所述重传PUSCH的时频资源上,接收终端通过复用MCS域指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者通过冗余版本RV指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的 第一位比特域。
其中,所述收发机接收终端根据所述随机接入响应消息重新发送的所述PUSCH时,具体用于:在所述重传PUSCH的时频资源上,接收终端在所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送的所述随机接入请求消息中的PUSCH;或者接收终端在所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送的所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
需要说明的是,该网络设备是与上述网络设备侧的方法对应的设备,上述方法实施例中所有实现方式均适用于该网络设备的实施例中,也能达到相同的技术效果。该网络设备还可以进一步包括:处理器72、存储器73,收发机71与处理器72,以及,收发机71与存储器73之间,均可以通过总线接口连接,收发机71的功能可以由处理器72实现,处理器72的功能也可以由收发机71实现。
本公开的实施例还提供一种通信设备,其中,包括:处理器、存储有计算机程序的存储器,所述计算机程序被处理器运行时,执行如上所述的方法。该通信设备为终端时,执行如上图3所示终端侧的方法,上述方法实施例中所有实现方式均适用于该实施例中,也能达到相同的技术效果。该通信设备如网络设备时,执行如图5所示网络设备侧的方法,上述方法实施例中的所有实现方式均适用于该实施例中,也能达到相同的技术效果。
本公开的实施例还提供一种计算机可读存储介质,包括指令,当所述指令在计算机运行时,使得计算机执行如上所述的方法。上述方法实施例中所有实现方式均适用于该实施例中,也能达到相同的技术效果。
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公开的范围。
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***、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。
在本公开所提供的实施例中,应该理解到,所揭露的装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
此外,需要指出的是,在本公开的装置和方法中,显然,各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且,执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行,但是并不需要一定按照时间顺序执行,某些步骤可以并行或彼此独立地执行。对本领域的普通技术人员而言,能够理解本公开的方法和装置的 全部或者任何步骤或者部件,可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中,以硬件、固件、软件或者它们的组合加以实现,这是本领域普通技术人员在阅读了本公开的说明的情况下运用他们的基本编程技能就能实现的。
因此,本公开的目的还可以通过在任何计算装置上运行一个程序或者一组程序来实现。所述计算装置可以是公知的通用装置。因此,本公开的目的也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说,这样的程序产品也构成本公开,并且存储有这样的程序产品的存储介质也构成本公开。显然,所述存储介质可以是任何公知的存储介质或者将来所开发出来的任何存储介质。还需要指出的是,在本公开的装置和方法中,显然,各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且,执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行,但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
可以理解的是,本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,单元、模块、子单元和子模块可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字信号处理器(Digital Signal Processing,DSP)、数字信号处理设备(DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
以上所述是本公开的可选的实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本公开所述原理的前提下,还可以作出若干改进和润饰,这些改进和润饰也应视为本公开的保护范围。

Claims (27)

  1. 一种数据重传方法,应用于终端,包括:
    向网络设备发送随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;
    接收所述网络设备下发的随机接入响应消息;
    根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH。
  2. 根据权利要求1所述的数据重传方法,其中,接收所述网络设备下发的随机接入响应消息,包括:
    接收所述网络设备下发的介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
  3. 根据权利要求2所述的数据重传方法,其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域发送,或者,通过冗余版本RV域发送。
  4. 根据权利要求3所述的数据重传方法,其中,根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH,包括:
    在所述重传PUSCH的时频资源上,通过复用MCS域指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者
    通过冗余版本RV指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
  5. 根据权利要求2所述的数据重传方法,其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
  6. 根据权利要求5所述的数据重传方法,其中,根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH,包括:
    当所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送所述随机接入请求消息中的PUSCH;
    当所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送所述随机接入请求消息中的PUSCH; 所述PUSCH的版本是按照预设规则确定的。
  7. 一种数据接收方法,应用于网络设备,包括:
    接收终端发送的随机接入流程的随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;
    向终端发送随机接入响应消息;
    接收终端根据所述随机接入响应消息重新发送的所述PUSCH。
  8. 根据权利要求7所述的数据接收方法,其中,向终端发送随机接入响应消息,包括:
    向终端发送介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
  9. 根据权利要求8所述的数据接收方法,其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域指示,或者,通过冗余版本RV域指示。
  10. 根据权利要求9所述的数据接收方法,其中,接收终端根据所述随机接入响应消息重新发送的所述PUSCH,包括:
    在所述重传PUSCH的时频资源上,接收终端通过复用MCS域指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者通过冗余版本RV指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
  11. 根据权利要求8所述的数据接收方法,其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
  12. 根据权利要求11所述的数据接收方法,其中,接收终端根据所述随机接入响应消息重新发送的所述PUSCH,包括:
    在所述重传PUSCH的时频资源上,接收终端在所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送的所述随机接入请求消息中的PUSCH;或者接收终端在所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送的所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
  13. 一种终端,包括:
    收发机,用于向网络设备发送随机接入请求消息,所述随机接入请求消息包括导频和物理上行共享信道PUSCH;接收所述网络设备下发的随机接入响应消息;根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH。
  14. 根据权利要求13所述的终端,其中,所述收发机接收所述网络设备下发的随机接入响应消息时,具体用于:
    接收所述网络设备下发的介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
  15. 根据权利要求14所述的终端,其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域发送,或者,通过冗余版本RV域发送。
  16. 根据权利要求15所述的终端,其中,所述收发机根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH时,具体用于:
    在所述重传PUSCH的时频资源上,通过复用MCS域指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者
    通过冗余版本RV指示,重新发送随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
  17. 根据权利要求14所述的终端,其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
  18. 根据权利要求17所述的终端,其中,所述收发机根据所述随机接入响应消息,重新发送所述随机接入请求消息中的PUSCH时,具体用于:
    当所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送所述随机接入请求消息中的PUSCH;
    当所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
  19. 一种网络设备,包括:
    收发机,接收终端发送的随机接入流程的随机接入请求消息,所述随机 接入请求消息包括导频和物理上行共享信道PUSCH;向终端发送随机接入响应消息;接收终端根据所述随机接入响应消息重新发送的所述PUSCH。
  20. 根据权利要求19所述的网络设备,其中,所述收发机向终端发送随机接入响应消息时,具体用于:
    向终端发送介质访问控制控制单元MAC CE信令,所述MAC CE信令携带重传PUSCH的时频资源以及PUSCH重传指示信息。
  21. 根据权利要求20所述的网络设备,其中,所述PUSCH重传指示信息通过复用所述MAC CE信令的调制与编码方案MCS域指示,或者,通过冗余版本RV域指示。
  22. 根据权利要求21所述的网络设备,其中,所述收发机接收终端根据所述随机接入响应消息重新发送的所述PUSCH时,具体用于:
    在所述重传PUSCH的时频资源上,接收终端通过复用MCS域指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变;或者通过冗余版本RV指示,重新发送的随机接入请求消息中的PUSCH的不同版本,MCS保持不变或根据MCS域指示确定。
  23. 根据权利要求20所述的网络设备,其中,所述PUSCH重传指示信息位于所述MAC CE中MAC Payload的第一位比特域。
  24. 根据权利要求23所述的网络设备,其中,所述收发机接收终端根据所述随机接入响应消息重新发送的所述PUSCH时,具体用于:
    在所述重传PUSCH的时频资源上,接收终端在所述第一位比特域的比特值为第一值时,根据调度的MCS等级在调度的时频资源上重新发送的所述随机接入请求消息中的PUSCH;或者接收终端在所述第一位比特域的比特值为第二值时,按照相同的MCS等级或调度的MCS等级在调度的时频资源上发送的所述随机接入请求消息中的PUSCH;所述PUSCH的版本是按照预设规则确定的。
  25. 一种终端,包括:处理器、存储有计算机程序的存储器,所述计算机程序被处理器运行时,执行如权利要求1至6任一项所述的方法。
  26. 一种通信设备,包括:处理器、存储有计算机程序的存储器,所述计算机程序被处理器运行时,执行如权利要求7至12任一项所述的方法。
  27. 一种计算机可读存储介质,其中,包括指令,当所述指令在计算机运行时,使得计算机执行如权利要求1至6任一项所述的方法,或者,执行如权利要求7至12任一项所述的方法。
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