WO2020063634A1 - 数据传输方法、装置及存储介质 - Google Patents

数据传输方法、装置及存储介质 Download PDF

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Publication number
WO2020063634A1
WO2020063634A1 PCT/CN2019/107726 CN2019107726W WO2020063634A1 WO 2020063634 A1 WO2020063634 A1 WO 2020063634A1 CN 2019107726 W CN2019107726 W CN 2019107726W WO 2020063634 A1 WO2020063634 A1 WO 2020063634A1
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Prior art keywords
data
identifier
configuration information
scrambled
transmission
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PCT/CN2019/107726
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English (en)
French (fr)
Inventor
吴艺群
王轶
徐修强
陈雁
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19864753.9A priority Critical patent/EP3846367B1/en
Publication of WO2020063634A1 publication Critical patent/WO2020063634A1/zh
Priority to US17/212,263 priority patent/US11381340B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041Arrangements at the transmitter end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045Arrangements at the receiver end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045Arrangements at the receiver end
    • H04L1/0047Decoding adapted to other signal detection operation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0061Error detection codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/02Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/04Arrangements for detecting or preventing errors in the information received by diversity reception using frequency diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a data transmission method, device, and storage medium.
  • mMTC large-scale machine type communication
  • URLLC low-latency high-reliability communication
  • grant-free (grant- free (GF) transmission mechanism to meet the purpose of having a large number of terminal devices accessing the communication network in the mMTC application scenario, and having good requirements for transmission delay in the URLLC application scenario.
  • GF transmission when the number of terminal devices connected to the network is greater than the number of available time-frequency resources or reference signals, problems such as collisions and data loss between the data sent by the terminal devices may occur, making the base station unable to determine the transmission. Data terminal device. Therefore, how to identify the terminal device under the condition of the GF transmission mechanism becomes an urgent problem to be solved in the data transmission process.
  • a terminal device uses its identity information to perform cyclic redundancy check (cyclic redundancy check). After the base station detects the data, , Perform a CRC check on all terminal devices using the same time-frequency resource, and then determine whether the identity information of the terminal device meets the CRC check.
  • cyclic redundancy check cyclic redundancy check
  • the base station needs to perform a CRC check on all terminal devices using the same time-frequency resource to determine the terminal device that sends data, and the sequence length as the identifier of the identity information is long (for example, 16 Bit), which causes the network device to easily judge the data of the target terminal that was received incorrectly as the correct data of other terminal devices, resulting in a high probability of data reception errors or false alarms.
  • the embodiments of the present application provide a data transmission method, device, and storage medium to solve the problems of high detection complexity and high probability of data reception errors or false alarms in the prior art.
  • a first aspect of the present application provides a data transmission method, which is applicable to a first device.
  • the method includes: performing a cyclic redundancy check CRC on data to be transmitted to obtain check data; and adding the check data according to a first identifier. Scramble to obtain scrambled verification data; perform channel coding on the data to be transmitted and the scrambled verification data to obtain encoded data; scramble the encoded data according to a second identifier to obtain scrambled data Scrambled data, wherein a combination of the first identifier and the second identifier is used to identify the first device; and the scrambled data is sent.
  • the first device is identified by a combination of a first identifier and a second identifier. Therefore, the first identifier is used to scramble the check data obtained through CRC, and the second identifier is used to encode the data. Scrambling, because the second device does not need to use the identifiers of all the first devices that use the same time-frequency resource for descrambling, it can also determine the identifier of the first device that sends data, which simplifies detection complexity and reduces data reception errors. Or the probability of a false alarm problem.
  • the method further includes: receiving configuration information from a second device, where the configuration information includes the first identifier.
  • the configuration information further includes the second identifier.
  • the second identifier is obtained from a cell-specific configuration message or a user group-specific configuration message from the second device.
  • the second identifier is sent through a cell-specific configuration message or a user group-specific configuration message.
  • the resource configuration information shared by all the first devices not only the number of repeated transmissions, the overhead of configuration information, but also the downlink control information Signaling overhead.
  • the configuration information further includes transmission parameter configuration information corresponding to the second identifier, and the transmission parameter configuration information includes configuration information of time-frequency resources. And / or configuration information of a reference signal; correspondingly, sending the scrambled data includes sending the scrambled data according to transmission parameter configuration information corresponding to the second identifier.
  • the sending the scrambled data includes: determining, according to the second identifier and a preset correspondence relationship, that the second identifier corresponds to Transmission parameter configuration information, wherein the correspondence relationship refers to a correspondence relationship between an identifier used to scramble the encoded data and transmission parameter configuration information, and the transmission parameter configuration information includes configuration information of time-frequency resources and / Or configuration information of a reference signal; and sending the scrambled data according to transmission parameter configuration information corresponding to the second identifier.
  • the configuration information further includes transmission parameter configuration information, and the transmission parameter configuration information includes time-frequency resource configuration information and / or reference signal configuration information;
  • the method further includes: determining the second identifier according to the transmission parameter configuration information; and sending the scrambled data includes sending the scrambled data according to the transmission parameter configuration information.
  • the first device may determine the second identifier according to the transmission parameter configuration information in the configuration information, and the second device does not need to directly assign the second identifier to the first device, which saves signaling overhead of the first device and the second device.
  • the transmission parameter configuration information in the configuration information is obtained from a cell-specific configuration message or a user group-specific configuration message.
  • the scrambling the verification data according to a first identifier to obtain the scrambled verification data includes: according to the first identifier. Generate a scrambled sequence, the length of the scrambled sequence is greater than the length of the first identified sequence; scramble the check data using the scrambled sequence to obtain the scrambled check data.
  • a scrambling sequence is first generated according to the first identifier, and the length of the scrambling sequence is greater than the sequence length of the first identifier, and then the scrambling sequence is used to scramble the verification data. Perform scrambling to obtain scrambled check data.
  • a second aspect of the present application provides a data transmission method, which is applicable to a second device.
  • the method includes: receiving transmission data from the first device; and descrambling the transmission data according to a second identifier, after the descrambling is obtained Perform channel decoding on the descrambled transmission data to obtain decoded data, and perform cyclic redundancy check CRC on the decoded data to obtain check data; according to the check data Determine whether the decoded data is correct, and determine the first identification of the first device.
  • the method further includes: sending configuration information to the first device, where the configuration information includes the first identifier.
  • the second device may send configuration information to the first device to configure the GF resource for the first device.
  • the configuration information may include a first identifier, and the first identifier may be used to indicate a specific location of the first device.
  • the configuration information further includes the second identifier.
  • the second identifier in the configuration information is carried in a cell-specific configuration message or a user group-specific configuration message sent by the second device.
  • the configuration information further includes transmission parameter configuration information corresponding to the second identifier, and the transmission parameter configuration information includes configuration information of time-frequency resources and And / or configuration information of a reference signal; correspondingly, receiving the transmission data from the first device includes receiving the transmission data according to transmission parameter configuration information corresponding to the second identifier.
  • the receiving transmission data from the first device includes: determining, according to the second identifier and a preset correspondence relationship, that the second identifier corresponds to Transmission parameter configuration information, wherein the correspondence relationship is a correspondence between an identifier used to descramble the transmission data and transmission parameter configuration information, and the transmission parameter configuration information includes configuration information of time-frequency resources and / Or configuration information of a reference signal; and receiving the transmission data according to transmission parameter configuration information corresponding to the second identifier.
  • the configuration information further includes transmission parameter configuration information
  • the transmission parameter configuration information includes time-frequency resource configuration information and / or reference signal configuration information
  • the method further includes: determining the second identifier according to the transmission parameter configuration information; thus, receiving the transmission data from the first device includes receiving the transmission data according to the transmission parameter configuration information.
  • the transmission parameter configuration information in the configuration information is carried in a cell-specific configuration message or a user group-specific configuration message sent by the second device.
  • a third aspect of the embodiments of the present application provides a data transmission device, which may be integrated in a first device, and the device has a function of implementing the behavior of the first device in the method described in the first aspect.
  • the functions may be implemented by hardware, and may also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the first device includes a transceiver and a processor, and the transceiver is configured to support communication between the first device and the second device.
  • the processor controls the first device to execute the method provided in the first aspect of the present application and various possible implementation manners.
  • the first device may further include a memory, where the memory is used for coupling with the processor, and stores necessary information of the first device. Program instructions and data.
  • a fourth aspect of the embodiments of the present application provides a data transmission device, which may be integrated in a second device, and the device has a function of implementing the behavior of the second device in the method described in the second aspect.
  • the functions may be implemented by hardware, and may also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the second device includes a transceiver and a processor, and the transceiver is configured to support communication between the first device and the second device.
  • the processor controls a second device to execute the method provided in the second aspect of the present application and various possible implementation manners.
  • the second device may further include a memory, where the memory is used for coupling with the processor, and stores necessary memory of the second device. Program instructions and data.
  • a fifth aspect of the embodiments of the present application provides a data transmission device including at least one processing element (or chip) for performing the method of the first aspect above.
  • a sixth aspect of the embodiments of the present application provides a data transmission device including at least one processing element (or chip) for performing the method of the second aspect above.
  • a seventh aspect of the embodiments of the present application provides a storage medium, where the storage medium stores instructions that, when run on a computer, cause the computer to execute the method of the first aspect.
  • An eighth aspect of the embodiments of the present application provides a computer program product containing instructions, which when executed on a computer, causes the computer to execute the method described in the first aspect above.
  • a ninth aspect of the embodiments of the present application provides a storage medium.
  • the storage medium stores instructions that, when run on a computer, cause the computer to execute the method of the second aspect.
  • a tenth aspect of the embodiment of the present application provides a computer program product containing instructions, which when executed on a computer, causes the computer to execute the method described in the second aspect above.
  • the first identifier is used to scramble the CRC-checked verification data, and to treat the After the transmission data and the scrambled check data are channel-encoded, the second identifier is used to scramble the encoded data obtained by the channel encoding, and finally the scrambled data is sent, so that the second device receives the scrambled data After that, the second identifier can be descrambled accordingly, and then a CRC check is performed to determine whether the received data is correct and the first identifier of the first device is determined.
  • the second device does not need to use the same time-frequency resource. All the first devices perform descrambling, which reduces the detection complexity and the probability of data reception errors or false alarms.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a communication system to which a data transmission method according to an embodiment of the present application is applicable;
  • FIG. 3 is a schematic flowchart of a first embodiment of a data transmission method according to an embodiment of the present application
  • FIG. 4 is a schematic flowchart of a second embodiment of a data transmission method according to an embodiment of the present application.
  • 5A is a schematic diagram of a second device sending configuration information to each first device in a device group corresponding to a second identifier
  • 5B is a schematic diagram of a second device sending configuration information to a device group corresponding to a second identifier
  • 6A is a schematic diagram of a relationship between different time-frequency resources corresponding to different G-RNTIs
  • FIG. 6B is a schematic diagram of the relationship between different reference signals of the same time-frequency resource corresponding to different G-RNTIs
  • FIG. 7 is a schematic flowchart of a third embodiment of a data transmission method according to an embodiment of the present application.
  • 8A is a schematic diagram of a relationship between different SIDs corresponding to different time-frequency resources
  • 8B is a schematic diagram of a relationship between different SIDs corresponding to different reference signals of the same time-frequency resource
  • FIG. 9 is a schematic flowchart of a fourth embodiment of a data transmission method according to an embodiment of the present application.
  • FIG. 10A and FIG. 10B are schematic diagrams of a false alarm problem when scrambling verification data by using a first identifier in this embodiment
  • 11A and 11B are schematic diagrams of reducing false alarms by adding scrambled bit data in this embodiment
  • FIG. 12 is a schematic flowchart of a fifth embodiment of a data transmission method according to an embodiment of the present application.
  • FIG. 13 is a schematic flowchart of a sixth embodiment of a data transmission method according to an embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of a first embodiment of a data transmission device according to an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a second embodiment of a data transmission device according to an embodiment of the present application.
  • FIG. 16 shows a simplified schematic diagram of a possible design structure of the first device involved in the foregoing embodiment
  • FIG. 17 shows a simplified schematic diagram of a possible design structure of the second device involved in the foregoing embodiment.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • the communication system may include at least one network device 10 and multiple terminal devices located within a coverage area of the network device 10.
  • FIG. 1 exemplarily shows a network device, and terminal devices 11 to 16.
  • the network device 10 may send information to one or several terminal devices from the terminal device 11 to the terminal device 16.
  • the network device 10 and the terminal devices 11 to 13 may form a single-cell communication system, and the terminal devices 11 to 13 may send uplinks to the network device 10 separately or simultaneously.
  • the terminal device 14 to the terminal device 16 may also constitute a device-to-device communication system.
  • the terminal device 15 as a sender may communicate with the terminal device 14 and One or more terminal devices in the terminal device 16 send information. Accordingly, the terminal device 14 and the terminal device 16 may send data to the terminal device 15 separately or simultaneously.
  • the communication system is not limited to including a network device and a terminal device, as long as an entity that sends information and an entity that receives information exist in the communication system, which is not limited in this embodiment of the present application.
  • the communication system may further include other network entities such as a network controller, a mobility management entity, and the embodiment of the present application is not limited thereto.
  • network entities such as a network controller, a mobility management entity, and the embodiment of the present application is not limited thereto.
  • the communication system applied in the embodiments of the present application may be a global mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access , WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, advanced long term evolution (LTE-A), LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile communication system (UMTS), and other applications of orthogonal frequency division multiplexing (OFDM) technology Wireless communication systems, etc.
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE-A advanced long term evolution
  • TDD LTE time division duplex
  • UMTS universal mobile communication system
  • OFDM orthogonal frequency division multiplexing
  • the network device involved in the embodiment of the present application may be used to provide a wireless communication function for a terminal device, that is, the network device may be an entity on the network side for sending or receiving signals.
  • the network equipment may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. In different communication modes, the network device may have different names.
  • the network device may be a base station (BTS) in GSM or CDMA, or a base station (nodeB, NB) in WCDMA. It may also be an evolutionary base station (evolutionary node B, eNB or e-NodeB) in LTE, and may be a corresponding device gNB in a 5G network.
  • the devices for providing wireless communication functions for terminal devices are collectively referred to as network devices.
  • the terminal device may be any terminal, for example, the terminal device may be a user equipment for machine-type communication. That is to say, the terminal device can also be called user equipment (UE), mobile station (MS), mobile terminal (mobile terminal), terminal (terminal), etc.
  • the access network (radio access network, RAN) communicates with one or more core networks.
  • the terminal device can be a mobile phone (or a "cellular" phone), a computer with a mobile terminal, etc.
  • the terminal device also It can be a portable, pocket, handheld, computer-built or vehicle-mounted mobile device that exchanges language and / or data with the wireless access network. It is not specifically limited in the embodiments of the present application.
  • communication between the network device and the terminal device and between the terminal device and the terminal device can be performed through a licensed spectrum (unlicensed spectrum), and communication can also be performed through an unlicensed spectrum (unlicensed spectrum).
  • Unlicensed spectrum for communication can be performed through a spectrum below 6 gigahertz (GHz), and communication can also be performed through a spectrum above 6 GHz. Communication over 6GHz spectrum.
  • the embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.
  • “multiple” means two or more.
  • “And / or” describes the association relationship of the associated objects, and indicates that there can be three kinds of relationships. For example, A and / or B can mean that there are three cases in which A exists alone, A and B exist, and B exists alone.
  • the character "/" generally indicates that the related objects are an "or" relationship.
  • Wireless communication networks provide wireless communication services to terminal equipment by deploying network equipment.
  • the network device can manage one or more cells, and there can be multiple terminal devices in a cell.
  • the network device and the terminal devices in the cell perform data transmission.
  • the process in which the network device sends data to the terminal device is called downlink data transmission, and the process in which the terminal device sends data to the network device is called uplink data transmission.
  • the uplink data transmission adopts a scheduling / grant-based mechanism, and the uplink data transmission is completely controlled by the network equipment.
  • a terminal device first sends an uplink scheduling request to a network device. After receiving the uplink scheduling request, the network device sends uplink authorization information to the terminal device to notify the terminal device of the uplink transmission resources allocated to the terminal device. The terminal device performs data transmission on the authorized uplink transmission resource according to the uplink authorization information. Therefore, the above mechanism is also called a grant-based (GB) mechanism.
  • GB grant-based
  • mMTC Large-scale machine type communication
  • mMTC is a typical application scenario of the next-generation communication network. Its typical characteristics are large connections, that is, the number of terminal devices is huge, and the business type is mainly small packet services. There are certain requirements for extension.
  • the next-generation communication network adopts a grant-free (GF) transmission mechanism, or a configured-grant transmission mechanism, to support the possibility of mass terminal access.
  • GF grant-free
  • the terminal device In the license-free transmission, once there is a demand for data transmission, the terminal device does not need to send a scheduling request to the network device to obtain the uplink authorization for the demand, but directly uses the pre-allocated (or semi-statically configured) transmission resources and / Or transmit parameters to send data.
  • the above-mentioned GF transmission mechanism for massive terminal equipment accessing network equipment allows multiple terminal equipments to compete for transmission on the same time-frequency resource. Therefore, contention conflicts may occur, thereby reducing the reliability of GF transmission.
  • Low-latency and high-reliability communication is also a typical application scenario for next-generation communication networks.
  • next-generation communication networks For some services such as connected cars, unmanned driving, and industrial control, system capacity is not a major issue, but it has high requirements for latency and reliability.
  • the GF transmission mechanism For some application scenarios that require a transmission delay of less than 1ms, the GF transmission mechanism is considered to be superior to the GB transmission mechanism and more suitable for uplink data transmission. Compared with the GB transmission mechanism, the GF transmission mechanism does not require the terminal device to go through the process of sending an uplink scheduling request and waiting to receive authorization from the network device, which greatly reduces the transmission delay and meets the delay requirements in the URLLC scenario.
  • network devices can pre-configure some parameters required by the terminal device for uplink transmission through semi-static configuration, such as the position and size of time-frequency resources that the terminal device may use, and modulation and coding methods. coding scheme (MCS), reference signal (RS) configuration information, etc. After the configuration is completed, the network device attempts to detect and demodulate the data sent by the terminal device at the corresponding time-frequency resource location. If the network device is configured with different time-frequency resources for each terminal device, or different reference signals are used in the same time-frequency resource, the network device can uniquely determine the identity information of the UE through the time-frequency resources and the reference signal.
  • MCS coding scheme
  • RS reference signal
  • the number of terminal devices when the number of terminal devices is greater than the number of available time-frequency resources or reference signals, multiple terminal devices may use the same time-frequency resource or reference signals to send data. Collisions can occur and data can be lost.
  • the network device when the network device detects the data, it cannot determine which terminal device sent it, nor can it be based on the cell wireless network temporary identifier of the terminal device (C- RNTI) performs operations such as data descrambling.
  • C- RNTI cell wireless network temporary identifier of the terminal device
  • One possible implementation method is to descramble the data by using the C-RNTIs of all terminal devices using the time-frequency resource, but the detection complexity is greatly increased. Therefore, how to identify the terminal device in the data transmission process based on the GF transmission mechanism has become an urgent problem.
  • the network device detects on a certain time-frequency resource. After the data is received, a CRC check of the data is required to determine the terminal device that sent the data.
  • the length of the sequence used as the identifier of the identity information is relatively long (for example, 16 bits), which causes the network device to easily judge the data of the target terminal device received incorrectly as the correct data of other terminal devices, causing data reception errors or The probability of false alarms is high.
  • embodiments of the present application provide a data transmission method, apparatus, and storage medium.
  • the first device After the first device obtains the first identifier and the second identifier that uniquely identify the first device, the first device passes the CRC check using the first identifier. Scramble the parity data of the channel, and after channel coding the data to be transmitted and the scrambled parity data, then scramble the encoded data obtained by the channel coding using the second identifier, and finally send the scrambled data,
  • the second device can descramble the data according to the first identifier and the second identifier, thereby obtaining the data to be transmitted and the terminal device that uniquely determines the transmitted data.
  • the second device does not need to All the first devices using the same time-frequency resource perform descrambling, which reduces the detection complexity and the probability of data reception errors or false alarms.
  • FIG. 2 is a schematic structural diagram of a communication system to which a data transmission method according to an embodiment of the present application is applicable.
  • the communication system may include a first device 21 and at least one second device group 22 that communicates with the first device 21, and each second device group 22 may include at least one second device 221, That is, the number of the second device groups 22 in the communication system may be one or more, and the number of the second devices 221 in each second device group 22 may also be one or more.
  • the number of the second device groups 22 included in the communication system and the number of the second devices 221 included in each second device group 22 are not limited, and may be set according to actual conditions.
  • the first device 21 may be a network device and the second device 221 may be a terminal device.
  • the data transmission method is applicable to data transmission between the network device and the terminal device.
  • the first device 21 may be a terminal device, and the second device 221 may also be a terminal device.
  • the data transmission method is applicable to data transmission between the terminal device and the terminal device.
  • the communication system may further include a network device, and the network device is configured to send configuration information to the first device to ensure the first device and the second device The second device in the device group performs data transmission.
  • FIG. 3 is a schematic flowchart of a first embodiment of a data transmission method according to an embodiment of the present application.
  • the data transmission method is applicable to the communication system in the embodiment shown in FIG. 2, in which the first device and the second device perform data transmission.
  • the data transmission method is applicable to the first device in the embodiment shown in FIG. 2.
  • the method may include the following steps:
  • Step 31 Perform a cyclic redundancy check CRC on the data to be transmitted to obtain check data.
  • the first device when the first device needs to send data to be transmitted to the second device, the first device may first process the data to be transmitted to generate a baseband signal, and then time and frequency corresponding to the first device The baseband signal is transmitted on the resource.
  • the CRC is the most commonly used error checking code, which is characterized in that the length of the information field and the check field can be arbitrarily selected.
  • CRC is a data transmission error detection function.
  • the sending device performs polynomial calculation on the data and attaches the result to the information field.
  • the receiving device also executes a similar algorithm to ensure the correctness and integrity of the data transmission. Sex.
  • the first device when the first device processes the data to be transmitted, it first performs a cyclic redundancy check CRC on the data to be transmitted to obtain the check data.
  • the CRC data is CRCed using the CRC check polynomial to obtain a check bit p 0 of length L, p 1 , ..., p L-1 , that is, the check data in this embodiment.
  • the parity bits p 0 , p 1 ,..., P L-1 of length L are attached to the input bits to obtain information bits b 0 , b 1 ,..., B A + L-1 .
  • Step 32 Scramble the verification data according to the first identifier to obtain the scrambled verification data.
  • the verification data obtained above may be scrambled by using the first identifier to obtain the scrambled verification data.
  • the first identifier is bits x 0 , x 1 ,..., X S-1 of length S, and generally L ⁇ S.
  • the first device scrambles the last S bits in the above-mentioned check data to obtain the scrambled check data, that is, the first device can use the first identifier (bit S of length x 0 , x 1 , ..., x S-1 ) scramble the last S bits of the above information bits (b 0 , b 1 , ..., b A + L-1 ) to obtain the scrambled information bits c 0 , c 1 , ..., c A + L-1 .
  • the first identifier may be an identifier within a device group where the first device is located.
  • a device group includes 16 first devices, and the identifier of the first device may be represented by 4 bits.
  • Step 33 Perform channel coding on the data to be transmitted and the scrambled check data to obtain coded data.
  • the first device after the first device performs cyclic redundancy check CRC and scrambling on the data to be transmitted to obtain the scrambled check data, the first device performs the above-mentioned data to be transmitted and the scrambled
  • the parity data is channel coded. Because the to-be-transmitted data and the scrambled check data can constitute the above-mentioned scrambled information bits c 0 , c 1 ,..., C A + L-1 . Therefore, in this embodiment, the first device may perform channel coding on the scrambled information bits c 0 , c 1 ,... C A + L-1 to obtain coded data.
  • Step 34 Scramble the coded data according to the second identifier to obtain the scrambled data, where the combination of the first identifier and the second identifier is used to identify the first device.
  • the first device may further scramble the encoded data obtained by using the second identifier to obtain the scrambled data.
  • the scrambling of the encoded data by using the second identifier in this step is similar to the process of scrambling the verification data by using the first identifier.
  • the scrambling bit can usually be generated by a Gold sequence in the protocol, where the Gold sequence is initialized by an initial value of 31 bits.
  • the initial value of the scrambling sequence is related to the cell identity and the terminal equipment identity.
  • the second device cannot descramble the received data because the second device cannot obtain the first device identification before demodulating the data.
  • scrambling may be performed by using an identifier of a device group where the first device is located (that is, a group wireless network temporary identifier (G-RNTI)).
  • G-RNTI group wireless network temporary identifier
  • the initial value of the scrambling sequence may be set as: Where n RNTI represents a sequence corresponding to the second identifier, Represents a sequence corresponding to a cell in which the first device is located.
  • the encoded data is represented by d 0 , d 1 , ..., d M-1 , where M is the bit length of the encoded data
  • the scrambling sequence is represented by w 0 , w 1 , ..., w M-1 .
  • the scrambled data is among them
  • Step 35 Send the scrambled data.
  • the first device when the first device obtains the scrambled data after checking, scrambling, encoding, and encoding the scrambled data on the data to be transmitted, the first device may further scramble the The baseband signal is obtained after modulation and resource mapping processing, and the baseband signal is sent on the time-frequency resource corresponding to the first device.
  • check data is obtained by performing CRC on the data to be transmitted, and scrambling the check data according to the first identifier to obtain scrambled check data.
  • the scrambled check data is channel-encoded to obtain encoded data, and the scrambled data is scrambled to obtain scrambled data according to the second identifier, and the scrambled data is sent.
  • the first device is identified by a combination of a first identifier and a second identifier. Therefore, the first identifier is used to scramble the check data obtained through CRC, and the second identifier is used to encrypt the encoded data.
  • the second device when the second device receives the transmitted data, it does not need to use the identifiers of all the first devices using the same time-frequency resource for descrambling, it can also determine whether the received data is correct, and determine the first
  • the identification of a device simplifies detection complexity and reduces the probability of data reception errors or false alarm problems.
  • the first identifier and the second identifier may be obtained by way of configuration information, that is, the data transmission method may further include the following steps:
  • the configuration information may include a first identifier.
  • the second device may send configuration information to the first device to configure the GF resource for the first device.
  • the GF resource may include information such as time-frequency resources, reference signals, power control, codebooks, sequences, modulation and coding methods used when the first device transmits data in a GF transmission mode.
  • the above configuration information may be carried in the same configuration message or in different configuration messages, which is not limited in this application.
  • the configuration information may include a first identifier, and the first identifier may be used to indicate a specific number (or index) of the first device in the device group, which is the first device ’s verification data (to be transmitted) Scrambled data obtained after CRC check of the data provides implementation possibilities.
  • FIG. 4 is a schematic flowchart of a second embodiment of a data transmission method provided by an embodiment of this application.
  • the configuration information received by the first device from the second device may further include the foregoing second identifier.
  • each device group may be assigned an identifier, that is, the group wireless network temporary identifier G-RNTI.
  • G-RNTI may be represented by a second identifier.
  • the first device when the first device receives the configuration information from the second device, the first device may not only determine the identifier of the device group to which the first device belongs (that is, the second identifier) according to the configuration information.
  • the identifier of the first device in the device group to which the first device belongs (that is, the first identifier) may also be determined according to the configuration information.
  • both the first identifier and the second identifier may be a bit sequence of a certain length.
  • the first device having the same second identifier is a device group
  • the G-RNTI is the identity identifier of the device group
  • the group identifier is the first The identity of the device within the device group.
  • the second identifier may be obtained from a cell-specific configuration message or a user group-specific configuration message from the second device.
  • the second device sends a cell-specific configuration message or a user group-specific configuration message to the first device.
  • the configuration message carries the configuration information of each transmission parameter.
  • the configuration information is used to configure the specific information corresponding to each transmission parameter. Value situation. Therefore, the first device may obtain a specific second identifier from a configuration message specific to the cell or a configuration message specific to the user group. Any first device that can correctly receive configuration messages specific to the same cell or user group-specific configuration messages can obtain the same second identifier, then these first devices can be considered to belong to the same device group, and the second identifier also Can be understood as the group ID of the group. For example, FIG.
  • 5A is a schematic diagram of a second device sending a configuration message to each first device in a device group corresponding to a second identifier.
  • 5B is a schematic diagram of a second device sending a configuration message to a device group corresponding to a second identifier.
  • the second device may send a device-specific configuration message to each first device to notify the first device of certain transmission parameters required for data transmission.
  • a configuration message is sent for each first device separately, which improves the receiving reliability and receiving efficiency of the first device.
  • the second device may also send a configuration message to the device group where the first device is located by using a cell-specific configuration message or a user group-specific configuration message. That is, each first device in the device group can receive the configuration message.
  • the configuration message specific to the user group may also be referred to as the device group-specific configuration message, which is not limited in the embodiment of the present application.
  • the first device in the device group can intercept the control information scrambled by using the second identifier, and then demodulate the corresponding data channel according to the scrambled control information to obtain the configuration information therein.
  • the terminal devices in the terminal device group can intercept downlink control information (downlink control information) scrambled by using the device group identifier, and indicate according to the downlink control information. Demodulate a corresponding physical downlink shared channel (PDSCH), and obtain a configuration message therein.
  • the DCI may be a type of configuration message, and a field in the DCI is a specific configuration of various transmission parameters, which is called configuration information.
  • the configuration message may also be radio resource control (radio resource control, RRC) signaling.
  • RRC radio resource control
  • the second device may send the second identifier to the first device through a cell-specific configuration message or a user group-specific configuration message, so The first device may obtain the cell-specific configuration message or the user group-specific configuration message from the second device.
  • G-RNTI the second identifier
  • the cell-specific configuration message may be notified by the second device to the first device in the cell through broadcast or multicast, so that all the first devices in the cell receive the configuration message, thereby determining the foregoing.
  • the second identification and transmission parameter configuration information may be sent by the second device to all the first devices in a user group (device group) in a broadcast manner, so that all users in the user group receive the configuration message, The second device is not required to send to each first device separately, which reduces signaling overhead.
  • the method of sending configuration information through a cell-specific configuration message or a user group-specific configuration message can reduce the number of repeated transmissions for resource configuration information shared by all first devices, and for the first device-specific
  • the resource configuration information may be identified by the intra-group ID of the first device.
  • the user control method in addition to reducing the overhead of sending configuration information by using a cell-specific or user group-specific configuration message, can also be used to send downlink control information to reduce the signaling overhead of the downlink control information.
  • the above configuration information may further include transmission parameter configuration information corresponding to the second identifier, and the transmission parameter configuration information may include: configuration information of time-frequency resources and / or configuration information of reference signals.
  • the second identifier and the transmission parameter configuration information in the configuration information may establish an association relationship, that is, the second identifier may Establish an association relationship with different time-frequency resources in the device group corresponding to the second identifier in the configuration information, and the second identifier may also establish an association relationship with different reference signals of the same time-frequency resource.
  • FIG. 6A is a schematic diagram of a relationship between different time-frequency resources corresponding to different G-RNTIs.
  • FIG. 6B is a schematic diagram showing the relationship between different reference signals of the same time-frequency resource corresponding to different G-RNTIs.
  • each time-frequency resource block corresponds to one G-RNTI, or different reference signals of the same time-frequency resource block correspond to one G-RNTI. Therefore, the configuration information received by the first device may also be It includes transmission parameter configuration information corresponding to a second identifier, and the second identifier is a G-RNTI. Therefore, in this embodiment, the first device determines, based on the configuration information, configuration information of time-frequency resources and / or configuration information of reference signals used by the first device in the device group corresponding to the second identifier.
  • the transmission parameter configuration information may include configuration information of time-frequency resources and / or configuration information of reference signals.
  • the reference signal may be a demodulation reference signal (DMRS), a sounding reference signal (SRS), a synchronization signal (synchronous signal, SS), or a preamble, Or other reference signals.
  • the first device may first scramble the check data obtained by performing the CRC on the data to be transmitted using the first identifier to scramble to obtain the scrambled check data, and then perform the scrambled data and the scrambled check
  • the second identifier is used to scramble the encoded data to obtain the scrambled data, so that the second device can use the first identifier and the second identifier to uniquely determine the first to send data to be transmitted.
  • Equipment therefore, when two or more first devices in a device group perform unauthorized GF transmission at the same time and there is a collision problem between sending data, the first device sending data can also be identified, reducing data reception errors Probability of the problem.
  • the configuration information may further include a power control required by the first device for data transmission, Configuration information for transmission parameters such as codebook, sequence, modulation and coding.
  • Configuration information for transmission parameters such as codebook, sequence, modulation and coding.
  • step 35 sending the above-mentioned scrambled data
  • step 35 sending the above-mentioned scrambled data
  • the first device may determine to perform data transmission according to the transmission parameter configuration information corresponding to the second identifier.
  • Required time-frequency resources and / or reference signals, and further the above-mentioned scrambled data can be sent on the time-frequency resources.
  • the above-mentioned step 35 (sending the above-mentioned scrambled data) may also be implemented through the following steps 41 and 42:
  • Step 41 Determine transmission parameter configuration information corresponding to the second identifier according to the second identifier and a preset correspondence relationship.
  • the corresponding relationship refers to a relationship between an identifier used to scramble the coded data and transmission parameter configuration information, and the transmission parameter configuration information includes configuration information of time-frequency resources and / or configuration information of a reference signal.
  • the first device may obtain a preset correspondence relationship according to the configuration information, that is, obtain a preset relationship between the identifier used to scramble the encoded data and the transmission parameter configuration information. Therefore, After acquiring the corresponding relationship between the second identifier and the preset, the first device may determine transmission parameter configuration information corresponding to the second identifier, that is, configuration information and / or reference of time-frequency resources corresponding to the second identifier. Signal configuration information.
  • Step 42 Send the scrambled data according to the transmission parameter configuration information corresponding to the second identifier.
  • the first device may use the reference signal to configure the time-frequency resource corresponding to the second identifier and / or the reference signal configuration information
  • the scrambled data is transmitted on a frequency resource.
  • the first device determines transmission parameter configuration information corresponding to the second identifier according to the second identifier and a preset corresponding relationship, and then according to the transmission parameter corresponding to the second identifier.
  • the configuration information sends the above scrambled data.
  • FIG. 7 is a schematic flowchart of a third embodiment of a data transmission method according to an embodiment of the present application.
  • the configuration information may further include transmission parameter configuration information, and the transmission parameter configuration information includes configuration information of time-frequency resources and / or configuration information of reference signals.
  • the second device when the second device sends configuration information to the first device to configure the GF resource for the first device, the second device may also configure a corresponding transmission parameter configuration information for the GF resource, and then use the The transmission parameter configuration information determines the above identifier for data scrambling, that is, scrambling ID (SID).
  • SID scrambling ID
  • the transmission parameter configuration information may include configuration information of time-frequency resources, for example, time-frequency resource identifier (resource ID, RID), slot index, OFDM symbol index, etc., or may include configuration information of reference signals, such as , Reference signal identification, reference signal port index, or configuration information including time-frequency resources and reference signal configuration information.
  • time-frequency resource identifier for example, time-frequency resource identifier (resource ID, RID), slot index, OFDM symbol index, etc.
  • configuration information of reference signals such as , Reference signal identification, reference signal port index, or configuration information including time-frequency resources and reference signal configuration information.
  • the data transmission method may further include the following steps:
  • Step 71 Determine the second identifier according to the transmission parameter configuration information.
  • the second relationship may be determined according to the correspondence between the transmission parameter configuration information and the second identifier. logo.
  • FIG. 8A is a schematic diagram of relationships between different SIDs corresponding to different time-frequency resources.
  • FIG. 8B is a schematic diagram of a relationship between different SIDs corresponding to different reference signals of the same time-frequency resource.
  • each time-frequency resource block corresponds to a SID
  • different reference signals of the same time-frequency resource block correspond to a SID. Therefore, the configuration information received by the first device may include the first identifier
  • the transmission parameter configuration information is also included, and the SID, that is, the second identifier can be determined according to the transmission parameter configuration information.
  • the reference signal may also be a DMRS, a preamble sequence, or other reference signals.
  • step 35 sending the above scrambled data
  • step 35 sending the above scrambled data
  • Step 72 Send the scrambled data according to the transmission parameter configuration information.
  • configuration information of time-frequency resources and / or reference signal configuration information required for data transmission may be determined according to the transmission parameter configuration information, and further The above-mentioned scrambled data may be sent on the time-frequency resource by using the reference signal.
  • the transmission parameter configuration information in the configuration information is obtained from a cell-specific configuration message or a user group-specific configuration message.
  • FIG. 9 is a schematic flowchart of a fourth embodiment of a data transmission method according to an embodiment of the present application.
  • the foregoing step 32 (scramble the verification data according to the first identifier to obtain the scrambled verification data) may be implemented by the following steps:
  • Step 91 Generate a scrambling sequence according to the first identifier, and the length of the scrambling sequence is greater than the sequence length of the first identifier.
  • FIG. 10A and FIG. 10B are schematic diagrams of a false alarm problem when scrambling verification data by using a first identifier in this embodiment.
  • the second device may detect when the first device does not send a data packet. At this time, the CRC check bit may be obtained as 0001. Therefore, the second device may determine that it is a data packet sent by the first device whose first identifier is 0001, so the determination result is incorrect, and a false alarm problem may occur.
  • FIG. 10A due to the influence of noise, as shown in FIG. 10A, the second device may detect when the first device does not send a data packet. At this time, the CRC check bit may be obtained as 0001. Therefore, the second device may determine that it is a data packet sent by the first device whose first identifier is 0001, so the determination result is incorrect, and a false alarm problem may occur.
  • FIG. 10A due to the influence of noise, as shown in FIG. 10A, the second device may detect when the first device does not send a data packet. At this time,
  • FIG. 11A and FIG. 11B are schematic diagrams of reducing false alarms by adding scrambled bit data in this embodiment.
  • the first identifier may be repeated twice to form a scrambled bit. Only the first 4 bits and the last 4 bits of the 8 bits are determined to be correctly received. Therefore, The probability of a false alarm problem is much lower than when there are only 4 check bits.
  • Step 92 Use the scrambling sequence to scramble the above verification data to obtain the scrambled verification data.
  • the scrambling sequence may be used to add the foregoing check data. Scramble to obtain the scrambled check data accordingly.
  • a scrambling sequence is first generated according to the first identifier, and the length of the scrambling sequence is greater than the sequence length of the first identifier, and then the scrambling sequence is used
  • the scrambling sequence scrambles the above verification data to obtain the scrambled verification data.
  • FIG. 12 is a schematic flowchart of a fifth embodiment of a data transmission method according to an embodiment of the present application. This data transmission method is applicable to the second device in the embodiment shown in FIG. 2. As shown in FIG. 12, the data transmission method may include the following steps:
  • Step 121 Receive transmission data from the first device.
  • the second device can detect the transmission data on the corresponding time-frequency resource, so that it can Received transmission data from the first device.
  • the transmission data may be sent by the first device to the second device through the baseband signal. Therefore, after receiving the baseband signal, the second device may first process The baseband signal is processed for demapping, channel estimation, and demodulation to obtain soft information of the encoded data, that is, transmission data in this embodiment.
  • the soft information is usually represented by a log-likelihood ratio (LLR), which represents a logarithm of a probability that a bit takes a value of 0 and a probability that a value takes a value of 1.
  • LLR log-likelihood ratio
  • Step 122 descrambling the transmission data according to the second identifier to obtain descrambled transmission data.
  • the second device uses the The transmission parameter configuration information (configuration information of time-frequency resources and / or configuration information of a reference signal) may determine the second identifier. For example, according to the correspondence between the time-frequency resource and / or the reference signal and the second identifier, a second identifier for descrambling the transmission data received using the time-frequency resource and / or the reference signal may be determined. Descramble the received transmission data according to the second identification.
  • the second device may determine the second identifier (which may be a G-RNTI, a SID, or an RID) according to the GF resource. Therefore, a scrambling sequence may be generated according to the second identifier, and then used. The scrambling sequence descrambles the soft information of the encoded data obtained in step 121.
  • the second identifier which may be a G-RNTI, a SID, or an RID
  • the scrambling sequence that can be generated according to the second identifier is 0, the log-likelihood ratio of the corresponding coded bit is maintained; when the scrambling bit that can be generated according to the second identifier is 1, the The log-likelihood ratio of the above coded bits is inverted.
  • Step 123 Perform channel decoding on the descrambled transmission data to obtain decoded data.
  • the second device may perform channel decoding on the descrambled transmission data, Thereby, the decoded data can be obtained.
  • Step 124 Perform a cyclic redundancy check CRC on the decoded data to obtain check data.
  • the second device may group all the first devices, and allocate an identifier for the first device in each group, where the first identifier is the first device identifier in the device group.
  • the second device may Get the verification data related to the first identifier.
  • the second device performs CRC on the decoded data obtained above to obtain check data.
  • the verification data may be the foregoing first identifier, or may be a scrambling sequence generated by the first device according to the first identifier.
  • Step 125 Determine whether the decoded data is correct according to the verification data, and determine a first identifier of the first device.
  • the combination of the first identifier and the second identifier is used to identify the first device.
  • the check data obtained by the second device in step 124 is also an identifier, and the identifier is compared with the second identifier.
  • the first identifiers of the respective first devices in the corresponding first device group are matched; if the matching is successful, it indicates that the decoded data is correct, and the check data is also the first device that sends the transmission data.
  • First identification if the matching is unsuccessful, it indicates that the decoded data is incorrect, that is, the transmission data sent by the first device is not received correctly.
  • the check data obtained by the second device in step 124 is also a sequence of the same length as the scrambling sequence used by the transmitting end when scrambling the CRC check data.
  • the scrambling sequence generated by the first identifier of each first device of the corresponding first device group is matched; if the match is successful, it indicates that the decoded data is correct; if the match is unsuccessful, it indicates that the decoded data Incorrect, that is, the transmission data sent by the first device was not received correctly. If the decoded data is incorrect, the first identification of the first device is restored from the check data according to the rules for generating a scrambling sequence.
  • the first The two devices may determine whether the verification data is an identifier of a first device in the device group corresponding to the second identifier or a scrambling sequence corresponding to an identifier of a first device according to the verification data.
  • the verification data is When the second identifier corresponds to an identifier of a first device in the device group or a scrambling sequence corresponding to an identifier of a first device, it indicates that the decoded data obtained is correct, and that the check data corresponds to a certain
  • the identification of the first device is the first identification.
  • the second device receives the transmission data from the first device, descrambles the transmission data according to the second identifier to obtain the descrambled transmission data, and then descrambles the transmission data.
  • CRC cyclic redundancy check
  • the first identifier of the first device wherein a combination of the first identifier and the second identifier is used to identify the first device.
  • the first device is identified by a combination of a first identifier and a second identifier.
  • the transmission data is descrambled according to the second identifier to obtain descrambled transmission data, and then determined based on the obtained verification data.
  • the first identification of the first device is obtained, so that the second device can determine the first device that sends data without descrambling the identification of all the first devices using the same time-frequency resource, which simplifies detection complexity and reduces Probability of data reception errors or false alarm issues.
  • the data transmission method may further include the following steps:
  • the second device may configure a GF resource for the first device by sending a configuration message to the first device.
  • the configuration message includes configuration information.
  • the configuration information may include a first identifier, and the first identifier may be used to indicate a specific location of the first device.
  • the configuration information may further include the foregoing second identifier.
  • the second identifier may be a group wireless network temporary identifier G-RNTI, or may be a scrambling identifier SID.
  • the second identifier is included in a cell-specific configuration message or a user group-specific configuration message of the second device.
  • the first identifier, and the second identifier refer to the description of the corresponding part of the embodiment shown in FIG. 4 above, and details are not described herein again.
  • the configuration information may further include transmission parameter configuration information corresponding to the second identifier, and the transmission parameter configuration information may include: configuration information of time-frequency resources and / or configuration information of reference signals.
  • step 121 (receiving transmission data from the first device) may be implemented by the following steps:
  • the second device when the configuration information sent by the second device to the first device includes transmission parameter configuration information corresponding to the second identifier, the second device can know which time-frequency resource the first device will be in The reference signal is used to send data, or the second device can receive the transmission data according to the transmission parameter configuration information corresponding to the second identifier.
  • step 121 (receiving transmission data from the first device) may be implemented by the following steps:
  • Step A1 Determine transmission parameter configuration information corresponding to the second identifier according to the second identifier and a preset correspondence relationship.
  • the corresponding relationship refers to a relationship between an identifier used for descrambling transmission data and transmission parameter configuration information, and the transmission parameter configuration information includes configuration information of time-frequency resources and / or configuration information of reference signals.
  • a preset correspondence relationship is implicitly included, that is, a relationship between a preset identifier for descrambling transmission data and transmission parameter configuration information. Therefore, the second device is in After determining the corresponding relationship between the second identifier and the preset, the transmission parameter configuration information corresponding to the second identifier may be determined, that is, the configuration information of the time-frequency resource and / or the reference signal configuration information corresponding to the second identifier. .
  • Step A2 Receive the transmission data according to the transmission parameter configuration information corresponding to the second identifier.
  • the second device may send the scrambled data according to the second identifier.
  • the configuration information of the corresponding time-frequency resource and / or the configuration information of the reference signal uses the reference signal to receive the transmission data on the time-frequency resource.
  • the foregoing configuration information further includes transmission parameter configuration information
  • the transmission parameter configuration information includes configuration information of time-frequency resources and / or configuration information of reference signals.
  • the data transmission method may further include the following steps:
  • this step is similar to the step of determining the second identifier by transmitting the parameter configuration information of the first device, and may specifically participate in the recording of step 71 in the embodiment shown in FIG. 7 above. I will not repeat them here.
  • step 121 receiving transmission data from the first device
  • step 121 receiving transmission data from the first device
  • configuration information of time-frequency resources and / or reference signal configuration information required for data transmission may be determined according to the transmission parameter configuration information.
  • the transmission data corresponding to the reference signal can be received on the time-frequency resource.
  • the transmission parameter configuration information in the configuration information is included in a cell-specific configuration message or a user group-specific configuration message of the second device.
  • FIG. 13 is a schematic flowchart of a sixth embodiment of a data transmission method according to an embodiment of the present application.
  • the above step 125 (determining whether the decoded data is correct according to the verification data and determining the first identifier of the first device) may be implemented by the following steps:
  • Step 131 Determine whether the verification data is the identifier of the first device in the device group corresponding to the second identifier or the scrambling sequence corresponding to the identifier of the first device; if yes, go to step 132; if not, go to step 133.
  • the length of the scrambled sequence is greater than the length of the first identified sequence.
  • the second device performs a cyclic redundancy check CRC on the decoded data. After obtaining the check data, it is first determined whether the check data is the first in the device group corresponding to the second identifier. A device identifier. When the verification data is not the identifier of any first device in the device group corresponding to the second identifier, it can also be determined whether the verification data corresponds to the identifier of the first device in the device group corresponding to the second identifier. Scrambling sequence.
  • the first device may use a scrambling sequence generated by using the first identifier and having a length greater than the sequence length of the first identifier. Disturb.
  • Step 132 Determine that the decoded data is correct, and determine a first identifier of the first device.
  • Step 133 Determine the decoded data error.
  • the verification data is an identifier of the first device in the device group corresponding to the second identifier or a scrambling sequence corresponding to the identifier of the first device
  • the data received by the second device is determined. True, otherwise, it is determined that the data received by the second device is incorrect.
  • the second device determines whether the verification data is an identifier of the first device in the device group corresponding to the second identifier or a scrambling sequence corresponding to the identifier of the first device.
  • the coded data is correct, and the first identification of the first device is determined; otherwise, the decoded data is determined to be incorrect.
  • FIG. 14 is a schematic structural diagram of a first embodiment of a data transmission apparatus according to an embodiment of the present application.
  • the data transmission device is suitable for a first device, that is, the device may be integrated in the first device or may be the first device.
  • the first device may be a terminal device.
  • the apparatus may include a processing module 141 and a transceiver module 142.
  • the processing module 141 is configured to perform a cyclic redundancy check CRC on the data to be transmitted, obtain check data, scramble the check data according to the first identifier, obtain scrambled check data, and perform Performing channel coding on the data to be transmitted and the scrambled check data to obtain coded data, and scrambling the coded data according to a second identifier to obtain scrambled data, wherein the first identifier and The combination of the second identifier is used to identify the first device;
  • the transceiver module 142 is configured to send the scrambled data.
  • the transceiver module 142 is further configured to receive configuration information from a second device, where the configuration information includes the first identifier.
  • the configuration information further includes the second identifier.
  • the second identifier is obtained from a cell-specific configuration message or a user group-specific configuration message from the second device.
  • the configuration information further includes transmission parameter configuration information corresponding to the second identifier, and the transmission parameter configuration information includes: configuration information of time-frequency resources and / or configuration of reference signals information;
  • the transceiver module 142 is configured to send the scrambled data, specifically:
  • the transceiver module 142 is specifically configured to send the scrambled data according to the transmission parameter configuration information corresponding to the second identifier.
  • the transceiver module 142 is configured to send the scrambled data, specifically:
  • the transceiver module 142 is specifically configured to determine transmission parameter configuration information corresponding to the second identifier according to the second identifier and a preset correspondence relationship, and send the information to the server according to the transmission parameter configuration information corresponding to the second identifier. Describe the scrambled data;
  • the correspondence relationship refers to a correspondence relationship between an identifier used to scramble the encoded data and transmission parameter configuration information, and the transmission parameter configuration information includes configuration information of time-frequency resources and / or configuration information of reference signals. .
  • the configuration information further includes transmission parameter configuration information, and the transmission parameter configuration information includes time-frequency resource configuration information and / or reference signal configuration information;
  • the processing module 141 is further configured to determine the second identifier according to the transmission parameter configuration information
  • the transceiver module 142 is configured to send the scrambled data, specifically:
  • the transceiver module 142 is specifically configured to send the scrambled data according to the transmission parameter configuration information.
  • the transmission parameter configuration information in the configuration information is obtained from a cell-specific configuration message or a user group-specific configuration message.
  • the processing module 142 is configured to scramble the verification data according to the first identifier to obtain the scrambled verification data, specifically: :
  • the processing module 142 is specifically configured to generate a scrambled sequence according to the first identifier, and the length of the scrambled sequence is greater than the sequence length of the first identifier, and use the scrambled sequence to add the check data. To obtain the scrambled check data.
  • the data transmission device of this embodiment may be used to execute the implementation solutions of the method embodiments shown in FIG. 3, FIG. 4, FIG. 7, and FIG. 9, and specific implementation manners and technical effects are similar, and details are not described herein again.
  • FIG. 15 is a schematic structural diagram of a second embodiment of a data transmission apparatus according to an embodiment of the present application.
  • the data transmission device is suitable for a second device, that is, the device may be integrated in the second device or may be a second device.
  • the second device may be a network device or a terminal device.
  • the apparatus may include: a transceiver module 151 and a processing module 152.
  • the transceiver module 151 is configured to receive transmission data from the first device
  • the processing module 152 is configured to descramble the transmission data according to the second identifier to obtain the descrambled transmission data, perform channel decoding on the descrambled transmission data, and obtain the decoded data. Performing cyclic redundancy check (CRC) on the decoded data to obtain check data;
  • CRC cyclic redundancy check
  • the transceiver module 151 is further configured to send configuration information to the first device, where the configuration information includes the first identifier.
  • the configuration information further includes the second identifier.
  • the second identifier in the configuration information is carried in a cell-specific configuration message or a user group-specific configuration message sent by the second device.
  • the configuration information further includes transmission parameter configuration information corresponding to the second identifier, and the transmission parameter configuration information includes: configuration information of time-frequency resources and / or configuration of reference signals information;
  • the transceiver module 151 is configured to receive transmission data from the first device, which is specifically:
  • the transceiver module 151 is specifically configured to receive the transmission data according to the transmission parameter configuration information corresponding to the second identifier.
  • the transceiver module 151 is configured to receive transmission data from the first device, which is specifically:
  • the transceiver module 151 is specifically configured to determine transmission parameter configuration information corresponding to the second identifier according to the second identifier and a preset correspondence relationship, and to receive information from the transmission parameter configuration information corresponding to the second identifier.
  • the transmission data wherein the correspondence relationship is a correspondence between an identifier for descrambling the transmission data and transmission parameter configuration information, and the transmission parameter configuration information includes configuration information and / or reference of time-frequency resources Signal configuration information.
  • the configuration information further includes transmission parameter configuration information, and the transmission parameter configuration information includes time-frequency resource configuration information and / or reference signal configuration information;
  • the processing module 152 is further configured to determine the second identifier according to the transmission parameter configuration information
  • the transceiver module 151 is configured to receive transmission data from the first device, specifically:
  • the transceiver module 151 is specifically configured to receive the transmission data according to the transmission parameter configuration information.
  • the transmission parameter configuration information in the configuration information is carried in a cell-specific configuration message or a user group-specific configuration message sent by the second device.
  • the processing module 152 is configured to determine whether the decoded data is correct according to the verification data, and determine the The first identification is specifically:
  • the processing module 152 is specifically configured to determine whether the verification data is an identifier of the first device in the device group corresponding to the second identifier or a scrambling sequence corresponding to the identifier of the first device. And determine the first identification of the first device; otherwise, determine that the decoded data is wrong.
  • the data transmission device of this embodiment may be used to execute the implementation solutions of the method embodiments shown in FIG. 12 and FIG. 13.
  • the specific implementation manner and technical effect are similar, and details are not described herein again.
  • each module of the above device is only a division of logical functions. In actual implementation, it may be fully or partially integrated into a physical entity, or it may be physically separated. And these modules can all be implemented in the form of software called by processing elements; they can also be all implemented in hardware; some modules can be implemented in the form of software called by processing elements, and some modules can be implemented in hardware.
  • the processing module may be a separately established processing element, or it may be integrated and implemented in a certain chip of the above-mentioned device. In addition, it may also be stored in the memory of the above-mentioned device in the form of a program code. Invoke and execute the functions of the above processing modules. The implementation of other modules is similar.
  • each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above method, such as one or more application specific integrated circuits (ASICs), or one or more microprocessors (digital signal processor (DSP), or one or more field programmable gate array (FPGA).
  • ASICs application specific integrated circuits
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program code.
  • CPU central processing unit
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a readable storage medium or transmitted from one readable storage medium to another readable storage medium.
  • the computer instructions may be transmitted from a website site, a computer, a server, or a data center through a wired ( For example, coaxial cable, optical fiber, digital subscriber line (DSL), or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server, or data center.
  • the readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, a data center, and the like that includes one or more available medium integration.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • FIG. 16 shows a simplified schematic diagram of a possible design structure of the first device involved in the foregoing embodiment.
  • the first device may include a controller / processor 161, a transceiver 162, and a memory 163.
  • controller / processor 161 may control and manage the action of the first device, and is configured to execute each of the embodiments shown in FIG. 3, FIG. 4, FIG. 7, and FIG. 9. Steps, and / or, other processes for the techniques described in this application.
  • the controller / processor 161 is configured to perform a cyclic redundancy check CRC on the data to be transmitted, obtain check data, scramble the check data according to the first identifier, and obtain scrambled check data.
  • CRC cyclic redundancy check
  • the combination with the second identifier is used to identify an operation process such as the first device.
  • controller / processor 161 is configured to support the first device to perform each step in the embodiments shown in FIG. 3, FIG. 4, FIG. 7, and FIG.
  • the transceiver 162 may be configured to send the scrambled data to the second device through an antenna.
  • the transceiver 162 may be further configured to receive configuration information sent by the second device through the antenna.
  • the transceiver 162 may also be implemented by a transmitter and a receiver with independent functions, both of which may be implemented by an antenna or the like, which is not limited in the embodiment of the present application.
  • the memory 163 is configured to store program code and data for the first device.
  • the memory 163 may be used to store the scrambled data sent by the transceiver 162 to the second device through the configuration instruction, and store the execution instruction and execution result of the controller / processor 161.
  • the apparatus in this embodiment may further include a modem processor 164.
  • a modem processor 164 may perform each step in the embodiment shown in FIG. 3, FIG. 7, FIG. 7, and FIG. 9 performed by the controller / processor 161.
  • the encoder 165 may be used to receive data to be transmitted on the uplink and process the data to be transmitted (e.g., CRC, format, encode, and interleave).
  • the modulator 166 is used for further processing (for example, symbol mapping and modulation) the encoded data to be transmitted.
  • the demodulator 167 is used to process (e.g., demodulate) a downlink signal received from a second device.
  • the decoder 168 is used to further process (e.g., deinterleave and decode) the downlink signal.
  • the encoder 165, the modulator 166, the demodulator 167, and the decoder 168 may be implemented by a synthesized modem processor 164. These units are based on the radio access technologies (e.g., access technologies of LTE and other evolved systems) adopted by the radio access network.
  • the data transmission device of this embodiment may be used to execute the implementation solutions of the embodiments shown in FIG. 3, FIG. 4, FIG. 7, and FIG.
  • FIG. 17 shows a simplified schematic diagram of a possible design structure of the second device involved in the foregoing embodiment.
  • the second device may include a transceiver 171, a controller / processor 172, and a memory 173.
  • the transceiver 171 is configured to receive transmission data from the first device by using an antenna.
  • the transceiver 171 may be further configured to send configuration information to the first device.
  • the transceiver 171 may also be implemented by a transmitter and a receiver with independent functions, both of which may be implemented by an antenna or the like, which is not limited in the embodiment of the present application.
  • the controller / processor 172 is used to control and manage the actions of the second device, and execute various functions to support the communication service of the second device.
  • the controller / processor 172 is configured to support the second device to perform each step of the embodiment shown in FIG. 12 and FIG. 13 and / or other processes used in the technology described in this application.
  • the controller / processor 172 is configured to descramble the transmission data according to the second identifier to obtain the descrambled transmission data, perform channel decoding on the descrambled transmission data, and obtain the decoded data. Performing cyclic redundancy check CRC on the decoded data to obtain check data; determining whether the decoded data is correct according to the check data, and determining a first identifier of the first device, wherein A combination of the first identifier and the second identifier is used to identify the first device.
  • the memory 173 is configured to store program code and data for the second device. Exemplarily, the memory 173 may be used to store data to be transmitted processed by the controller / processor 172, and store execution instructions and execution results of the controller / processor 172.
  • the second device is similar to the first device, and the second device may also include a modem processor.
  • the steps performed by the controller / processor 172 in the foregoing embodiments shown in FIG. 12 and FIG. 13 may be performed by the modem processor, and details are not described herein again.
  • the controller / processor for performing the functions of the first device and the second device in the embodiment of the present application may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and a dedicated integration. Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component or any combination thereof, which can implement or execute various exemplary logics described in connection with the disclosure of this application Boxes, modules and circuits.
  • the processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the data transmission device of this embodiment may be used to execute the implementation solutions of the method embodiments shown in FIG. 12 and FIG. 13.
  • the specific implementation manner and technical effect are similar, and details are not described herein again.
  • an embodiment of the present application further provides a storage medium.
  • the storage medium stores instructions, and when the storage medium is run on a computer, the computer is executed as shown in FIG. 3, FIG. 4, FIG. 7, and FIG. 9 described above.
  • an embodiment of the present application further provides a chip for running instructions, where the chip is configured to execute the method in the embodiment shown in FIG. 3, FIG. 4, FIG. 7, and FIG. 9 or the implementation shown in FIG. 12 and FIG. 13. Case method.
  • the embodiment of the present application further provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the method or the embodiment shown in FIG. 3, FIG. 4, FIG. 7, and FIG. 9 above. 12 and the method of the embodiment shown in FIG.
  • At least one means one or more, and “multiple” means two or more.
  • “And / or” describes the association relationship of related objects, and indicates that there can be three kinds of relationships, for example, A and / or B can represent: the case where A exists alone, A and B exist simultaneously, and B alone exists, where A, B can be singular or plural.
  • the character "/” generally indicates that the related objects are an "or” relationship; in the formula, the character “/” indicates that the related objects are a "divide” relationship.
  • At least one or more of the following” or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one (a), a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple Each.
  • the size of the sequence numbers of the above processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not deal with the implementation of this application.
  • the implementation process of the example constitutes any limitation.

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Abstract

本申请实施例提供一种数据传输方法、装置及存储介质,其中,该方法包括:第一设备获取到唯一标识第一设备的第一标识和第二标识之后,利用第一标识对经过CRC校验的校验数据进行加扰,以及在对待传输数据和加扰后的校验数据进行信道编码后,再利用第二标识对信道编码得到的编码数据进行加扰,最后发送加扰后的数据,这样第二设备接收到加扰后的数据后,可以根据第二标识进行解扰,进而进行CRC校验,进而判定接收到的数据是否正确以及确定出第一设备的第一标识,第二设备不需要对使用同一时频资源的所有第一设备进行解扰,降低了检测复杂度,降低了数据接收错误或虚警的概率。

Description

数据传输方法、装置及存储介质
本申请要求于2018年09月26日提交中国专利局、申请号为201811126409.2、申请名称为“数据传输方法、装置及存储介质”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域,尤其涉及一种数据传输方法、装置及存储介质。
背景技术
在大规模机器类型通信(massive machine type communication,mMTC)和低延时高可靠通信(ultra low latency and reliable communication,URLLC)应用场景下,终端设备和基站间的数据传输可能采用免授权(grant-free,GF)传输机制,以满足mMTC应用场景下海量终端设备接入通信网络、URLLC应用场景下对传输时延有很好要求的目的。在GF传输时,当接入网络的终端设备的数量大于可用时频资源或参考信号的数量时,可能会出现终端设备发送的数据之间出现碰撞、数据丢失的问题,进而使得基站无法确定发送数据的终端设备。因而,基站如何在GF传输机制条件下识别终端设备成为数据传输过程中亟待解决的问题。
现有技术中的数据传输方法,在基于GF传输机制的数据传输过程中,终端设备利用其身份信息进行循环冗余校验(cyclic redundancy check,CRC)比特的加扰,基站在检测到数据后,对使用同一时频资源的所有终端设备进行CRC校验,进而判断是否有终端设备的身份信息满足CRC校验。
然而,上述数据传输方法中,由于基站需要对使用同一时频资源的所有终端设备进行CRC校验才能确定出发送数据的终端设备,且作为身份信息的标识的序列长度较长(例如,16个比特),导致网络设备容易将错误接收的目标终端的数据判断成其他终端设备的正确数据,造成数据接收错误或虚警的概率高。
发明内容
本申请实施例提供一种数据传输方法、装置及存储介质,以解决现有技术中存在的检测复杂度高,数据接收错误或虚警的概率高的问题。
本申请第一方面提供一种数据传输方法,适用于第一设备,该方法包括:对待传输数据进行循环冗余校验CRC,得到校验数据;根据第一标识对所述校验数据进行加扰,得到加扰后的校验数据;对所述待传输数据和所述加扰后的校验数据进行信道编码,得到编码数据;根据第二标识对所述编码数据进行加扰,得到加扰后的数据,其中,所述第一标识和所述第二标识的组合用于标识所述第一设备;以及发送所述加扰后的数据。
本实施例中,通过第一标识和第二标识的组合来标识上述第一设备,因而,通过第一 标识对待传输数据经过CRC得到的校验数据进行加扰,利用第二标识对编码数据进行加扰,由于第二设备不需要利用使用同一时频资源的所有第一设备的标识进行解扰,也能确定出发送数据的第一设备的标识,简化了检测复杂度,降低了数据接收错误或虚警问题出现的概率。
可选的,在第一方面的一种可能实现方式中,所述方法还包括:接收来自第二设备的配置信息,所述配置信息包括所述第一标识。
可选的,所述配置信息还包括所述第二标识。
可选的,所述第二标识是从来自所述第二设备的小区专用的配置消息或者用户组专用的配置消息中获取的。
通过小区专用的配置消息或者用户组专用的配置消息发送第二标识,对于所有的第一设备共享的资源配置信息,不仅可以减少重复发送次数,降低配置信息的开销,还可以降低下行控制信息的信令开销。
可选的,在第一方面的另一种可能实现方式中,所述配置信息还包括所述第二标识所对应的传输参数配置信息,所述传输参数配置信息包括:时频资源的配置信息和/或参考信号的配置信息;相应的,所述发送所述加扰后的数据包括:根据所述第二标识所对应的传输参数配置信息发送所述加扰后的数据。
可选的,在第一方面的再一种可能实现方式中,所述发送所述加扰后的数据包括:根据所述第二标识、以及预设的对应关系确定所述第二标识所对应的传输参数配置信息,其中,所述对应关系是指用于加扰所述编码数据的标识与传输参数配置信息之间的对应关系,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;以及根据所述第二标识所对应的传输参数配置信息发送所述加扰后的数据。
可选的,在第一方面的又一种可能实现方式中,所述配置信息还包括传输参数配置信息,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;
相应的,所述方法还包括:根据所述传输参数配置信息确定所述第二标识;所述发送所述加扰后的数据包括:根据所述传输参数配置信息发送所述加扰后的数据。
本实施例中,第一设备可以根据配置信息中的传输参数配置信息确定第二标识,第二不用直接为第一设备分配第二标识,节省了第一设备和第二设备的信令开销。
可选的,所述配置信息中的传输参数配置信息是从小区专用的配置消息或者用户组专用的配置消息中获取的。
可选的,在第一方面的又一种可能实现方式中,所述根据第一标识对所述校验数据进行加扰,得到加扰后的校验数据,包括:根据所述第一标识生成加扰序列,所述加扰序列的长度大于所述第一标识的序列长度;利用所述加扰序列对所述校验数据进行加扰,得到加扰后的校验数据。
该实施例在对校验数据进行加扰时,首先根据该第一标识生成加扰序列,该加扰序列的长度大于该第一标识的序列长度,再利用该加扰序列对上述校验数据进行加扰,得到加扰后的校验数据。该技术方案进一步降低了数据传输时可能出现的虚警问题的概率。
本申请第二方面提供一种数据传输方法,适用于第二设备,该方法包括:接收来自第一设备的传输数据;并且,根据第二标识对所述传输数据进行解扰,得到解扰后的传输数据;对所述解扰后的传输数据进行信道译码,得到译码后的数据,对该译码后的数据进行 循环冗余校验CRC,得到校验数据;根据该校验数据判断该译码后的数据是否正确,并确定第一设备的第一标识。
可选的,本第二方面的一种可能实现方式中,所述方法还包括:向所述第一设备发送配置信息,所述配置信息包括所述第一标识。
在本实施例中,第二设备可以向第一设备发送配置信息以为第一设备配置GF资源。可选的,该配置信息可以包括第一标识,该第一标识可以用来表示该第一设备的具体位置。
可选的,所述配置信息还包括所述第二标识。
可选的,所述配置信息中的所述第二标识携带在所述第二设备发送的小区专用的配置消息或者用户组专用的配置消息中。
可选的,在第二方面的一种可能实现方式中,所述配置信息还包括所述第二标识所对应的传输参数配置信息,所述传输参数配置信息包括:时频资源的配置信息和/或参考信号的配置信息;相应的,所述接收来自第一设备的传输数据包括:根据所述第二标识所对应的传输参数配置信息接收所述传输数据。
可选的,在第二方面的另一种可能实现方式中,所述接收来自第一设备的传输数据包括:根据所述第二标识、以及预设的对应关系确定所述第二标识所对应的传输参数配置信息,其中,所述对应关系是指用于解扰所述传输数据的标识与传输参数配置信息之间的对应关系,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;以及根据所述第二标识所对应的传输参数配置信息接收所述传输数据。
可选的,在第二方面的再一种可能实现方式中,所述配置信息还包括传输参数配置信息,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;相应的,所述方法还包括:根据所述传输参数配置信息确定所述第二标识;因而,所述接收来自第一设备的传输数据包括:根据所述传输参数配置信息接收所述传输数据。
可选的,所述配置信息中的传输参数配置信息携带在所述第二设备发送的小区专用的配置消息或者用户组专用的配置消息中。
本申请实施例第三方面提供一种数据传输装置,该装置可集成于第一设备中,该装置具有实现上述第一方面所述方法中第一设备行为的功能。所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中,第一设备的结构中包括收发器和处理器,所述收发器被配置为支持第一设备与第二设备之间的通信。所述处理器控制第一设备执行本申请第一方面以及各可能实现方式提供的方法,所述第一设备还可以包括存储器,所述存储器用于与处理器耦合,其保存第一设备必要的程序指令和数据。
本申请实施例第四方面提供一种数据传输装置,该装置可集成于第二设备中,该装置具有实现上述第二方面所述方法中第二设备行为的功能。所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中,第二设备的结构中包括收发器和处理器,所述收发器被配置为支持第一设备与第二设备之间的通信。所述处理器控制第二设备执行本申请第二方面以及各可能实现方式提供的方法,所述第二设备还可以包括存储器,所述存储器用于与处理器 耦合,其保存第二设备必要的程序指令和数据。
本申请实施例第五方面提供一种数据传输装置,包括用于执行以上第一方面的方法的至少一个处理元件(或芯片)。
本申请实施例第六方面提供一种数据传输装置,包括用于执行以上第二方面的方法的至少一个处理元件(或芯片)。
本申请实施例第七方面提供一种存储介质,所述存储介质中存储有指令,当其在计算机上运行时,使得计算机执行上述第一方面的方法。
本申请实施例第八方面提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第一方面所述的方法。
本申请实施例第九方面提供一种存储介质,所述存储介质中存储有指令,当其在计算机上运行时,使得计算机执行上述第二方面的方法。
本申请实施例第十方面提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第二方面所述的方法。
本申请实施例提供的数据传输方法,第一设备获取到唯一标识第一设备的第一标识和第二标识之后,利用第一标识对经过CRC校验的校验数据进行加扰,以及在对待传输数据和加扰后的校验数据进行信道编码后,再利用第二标识对信道编码得到的编码数据进行加扰,最后发送加扰后的数据,这样第二设备接收到加扰后的数据后,相应的可以利用第二标识进行解扰,然后进行CRC校验,进而判定接收到的数据是否正确以及确定出第一设备的第一标识,第二设备不需要对使用同一时频资源的所有第一设备进行解扰,降低了检测复杂度,降低了数据接收错误或虚警问题的概率。
附图说明
图1为本申请实施例提供的一种通信系统的结构示意图;
图2为本申请实施例提供的数据传输方法适用的通信系统的结构示意图;
图3为本申请实施例提供的数据传输方法实施例一的流程示意图;
图4为本申请实施例提供的数据传输方法实施例二的流程示意图;
图5A为第二设备分别向第二标识对应设备组中的每个第一设备发送配置信息的示意图;
图5B为第二设备向第二标识对应设备组发送配置信息的示意图;
图6A为不同时频资源对应不同G-RNTI的关系示意图;
图6B为同一时频资源的不同参考信号对应不同G-RNTI的关系示意图;
图7为本申请实施例提供的数据传输方法实施例三的流程示意图;
图8A为不同的时频资源对应的不同SID的关系示意图;
图8B为同一时频资源的不同参考信号对应的不同SID的关系示意图;
图9为本申请实施例提供的数据传输方法实施例四的流程示意图;
图10A和图10B为本实施例中利用第一标识对校验数据进行加扰出现虚警问题的示意图;
图11A和图11B为本实施例中通过增加加扰比特数据以减少虚警问题的示意图;
图12为本申请实施例提供的数据传输方法实施例五的流程示意图;
图13为本申请实施例提供的数据传输方法实施例六的流程示意图;
图14为本申请实施例提供的数据传输装置实施例一的结构示意图;
图15为本申请实施例提供的数据传输装置实施例二的结构示意图;
图16示出了上述实施例中所涉及的第一设备的一种可能的设计结构的简化示意图;
图17示出了上述实施例中所涉及的第二设备的一种可能的设计结构的简化示意图。
具体实施方式
本申请下述各实施例提供的数据传输方法,可适用于通信系统中。图1为本申请实施例提供的一种通信系统的结构示意图。如图1所示,该通信系统可以包括至少一个网络设备10和位于网络设备10覆盖范围内的多个终端设备。图1示例性地示出了一个网络设备、以及终端设备11至终端设备16。在图1所示实施例的通信系统中,网络设备10作为发送者,可以向终端设备11至终端设备16中的一个或某几个终端设备发送信息。
可选的,在图1所示的实施例中,网络设备10和终端设备11至终端设备13可以组成一个单小区通信系统,终端设备11至终端设备13可以分别或同时向网络设备10发送上行数据。可选的,如图1所示,终端设备14至终端设备16也可组成一个设备到设备的通信系统,在设备到设备的通信系统中,终端设备15作为发送者,可以向终端设备14和终端设备16中的一个或多个终端设备发送信息,相应的,终端设备14和终端设备16可以分别或同时向终端设备15发送数据。可选地,该通信系统不限于包括网络设备和终端设备,只要该通信系统中存在发送信息的实体,以及存在接收信息的实体即可,本申请实施例对此不做限定。
可选地,该通信系统还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例不限于此。
本申请实施例所应用的通信系统可以为全球移动通讯(global system of mobile communication,GSM)系统、码分多址(code division multiple access,CDMA)系统、宽带码分多址(wideband code division multiple access,WCDMA)系统、通用分组无线业务(general packet radio service,GPRS)、长期演进(long term evolution,LTE)系统、高级的长期演进(LTE advanced,LTE-A)、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)、通用移动通信系统(universal mobile telecommunication system,UMTS),及其他应用正交频分复用(orthogonal frequency division multiplexing,OFDM)技术的无线通信系统等。本申请实施例描述的系统架构以及业务场景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,随着网络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。
在本申请实施例中所涉及的网络设备可用于为终端设备提供无线通信功能,即该网络设备可以是网络侧的一种用来发送或接收信号的实体。所述网络设备可以包括各种形式的宏基站,微基站(也称为小站),中继站,接入点等。在不同的通信模式下,该网络设备可能有不同的名称,比如,所述网络设备可以是GSM或CDMA中的基站(base transceiver station,BTS),也可以是WCDMA中的基站(nodeB,NB),还可以是LTE中的演进型基站(evolutional node B,eNB或e-NodeB),以及可以是5G网络中对应的设备gNB。为方便描述,本申请所有实施例中,上述为终端设备提供无线通信功能的装置统称为网络设备。
在本申请实施例中,终端设备可以是任意的终端,比如,终端设备可以是机器类通信的用户设备。也就是说,所述终端设备也可称之为用户设备(user equipment,UE)、移动台(mobile station,MS)、移动终端(mobile terminal)、终端(terminal)等,该终端设备可以经无线接入网(radio access network,RAN)与一个或多个核心网进行通信,例如,终端设备可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等,例如,终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语言和/或数据。本申请实施例中不做具体限定。
可选的,网络设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信,也可以通过免授权频谱(unlicensed spectrum)进行通信,也可以同时通过授权频谱和免授权频谱进行通信。网络设备和终端设备之间以及终端设备和终端设备之间可以通过6吉兆赫(gigahertz,GHz)以下的频谱进行通信,也可以通过6GHz以上的频谱进行通信,还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对网络设备和终端设备之间所使用的频谱资源不做限定。
本申请实施例中,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
下面首先针对本申请实施例适用场景进行简要说明。
无线通信网络通过部署网络设备为终端设备提供无线通信服务。网络设备和终端设备进行无线通信时,网络设备可以管理一个或者多个小区(cell),一个小区中可以有多个终端设备。网络设备和小区中的终端设备进行数据传输,其中,网络设备向终端设备发送数据的过程称为下行数据传输,终端设备向网络设备发送数据的过程称为上行数据传输。
通常情况下,在典型的无线通信网络中(例如,LTE),上行数据传输采用基于调度/授权(scheduling/grant)的机制,上行数据传输完全受网络设备控制。在该机制中,终端设备首先向网络设备发出上行调度请求,网络设备接收到该上行调度请求后通过向终端设备发出上行授权信息以通知该终端设备为其分配的上行传输资源。终端设备根据该上行授权信息在授权的上行传输资源上进行数据传输。因而,上述机制也称为授权传输(grant-based,GB)机制。
大规模机器类型通信(massive machine type communication,mMTC)是下一代通信网络的典型应用场景,其典型特征是大连接,即终端设备的数量庞大,业务类型以小数据包业务为主,对传输时延有一定的要求。当海量终端设备接入时,如果沿用上述调度/授权机制,一方面将产生巨大的信令传输开销以及增大网络设备对资源分配的调度压力,另一方面将造成显著的传输时延。鉴于此,下一代通信网络为支撑海量终端设备接入的可能,采用免授权(grant-free,GF)传输机制,或者称为配置授权(configured-grant)传输机制。在免授权传输中,一旦有数据传输的需求,终端设备无需针对该需求向网络设备发出调度请求以获得上行授权,而是直接使用预先分配(或者称之为半静态配置)的传输资源和/或传输参数来发送数据。上述海量终端设备接入网络设备的GF传输机制,由于允许多个终端设备在同一时频资源上竞争传输,因而,可能会产生竞争冲突,从而降低GF传输的可靠性。
低延时高可靠通信(ultra low latency and reliable communication,URLLC)也是下一代 通信网络的典型应用场景。对车联网、无人驾驶、工业控制等一些业务来说,系统容量并不是主要的问题,但是对于时延和可靠性却有很高的要求。对于某些要求传输延时小于1ms的应用场景,GF传输机制被认为是优于GB传输机制,且更加适用于上行数据传输。GF传输机制相比于GB传输机制,终端设备不需要经过发送上行调度请求和等待接收网络设备的授权的过程,大大缩短了传输时延,满足了URLLC场景在时延方面的需求。
目前,为了支持GF传输机制,网络设备可以通过半静态配置的方式预先配置一些终端设备上行传输所需的参数,例如,终端设备可能使用的时频资源的位置和大小、调制编码方式(modulation and coding scheme,MCS)、参考信号(reference signal,RS)配置信息等。在完成配置后,网络设备在对应的时频资源位置尝试检测并解调终端设备发送的数据。如果网络设备为每个终端设备配置了不同的时频资源,或同一个时频资源中使用了不同的参考信号,这样网络设备可以通过时频资源和参考信号来唯一确定UE的身份信息。
在一些应用场景中,当终端设备的数量大于可用的时频资源或参考信号的数量时,多个终端设备可能会使用相同的时频资源或参考信号发送数据,此时,终端设备之间可能会发生碰撞并造成数据丢失。在可能出现的终端设备之间碰撞的场景中,网络设备在检测到数据时无法确定具体是哪个终端设备发送的,也无法根据终端设备的小区无线网络临时标识(cell radio network temporary identifier,C-RNTI)进行数据解扰等操作。一种可能的实现方法是利用使用该时频资源的所有终端设备的C-RNTI对数据进行解扰,但大大增加了检测的复杂度。因此,网络设备如何在基于GF传输机制的数据传输过程中识别出终端设备成为亟待解决的问题。
在现有技术中,当在基于GF传输机制的数据传输过程中,当终端设备利用其身份信息对待传输数据进行循环冗余校验CRC比特的加扰时,网络设备在某一时频资源上检测到数据后,需要对该数据进行CRC校验以确定出发送数据的终端设备。现有技术中,作为身份信息的标识的序列长度较长(例如,16个比特),导致网络设备容易将错误接收的目标终端设备的数据判断成其他终端设备的正确数据,造成数据接收错误或虚警的概率高。
针对上述问题,本申请实施例提供了一种数据传输方法、装置及存储介质,第一设备获取到唯一标识第一设备的第一标识和第二标识之后,利用第一标识对经过CRC校验的校验数据进行加扰,以及在对待传输数据和加扰后的校验数据进行信道编码后,再利用第二标识对信道编码得到的编码数据进行加扰,最后发送加扰后的数据,这样第二设备接收到加扰后的数据后,相应的可以根据第一标识和第二标识进行解扰,进而可以得到待传输数据以及唯一确定出传输数据的终端设备,第二设备不需要对使用同一时频资源的所有第一设备进行解扰,降低了检测复杂度,降低了数据接收错误或虚警的概率。
下面,通过具体实施例对本申请的技术方案进行详细说明。需要说明的是,下面这几个具体的实施例可以相互结合,对于相同或相似的概念或过程可能在某些实施例中不再赘述。
在本实施例中,图2为本申请实施例提供的数据传输方法适用的通信系统的结构示意图。如图2所示,该通信系统可以包括:第一设备21、与第一设备21进行通信的至少一个第二设备组22,每个第二设备组22中可以包括至少一个第二设备221,也即,该通信系统中的第二设备组22的数量可以为一个或多个,每个第二设备组22中的第二设备221的数量也可以为一个或多个,本申请实施例并不对通信系统中包括的第二设备组22的数 量、每个第二设备组22中包括的第二设备221的数量进行限定,其可以根据实际情况进行设定。
可选的,作为一种示例,第一设备21可以是网络设备,第二设备221可以是终端设备,此时,该数据传输方法适用的是网络设备和终端设备之间的数据传输。作为另一种示例,第一设备21可以是终端设备,第二设备221也可以是终端设备,此时,该数据传输方法适用的是终端设备和终端设备之间的数据传输。在本实施例中,对于终端设备和终端设备之间的数据传输,该通信系统中还可以包括网络设备,该网络设备用于将配置信息发送给第一设备,以保证第一设备和第二设备组中的第二设备进行数据传输。
图3为本申请实施例提供的数据传输方法实施例一的流程示意图。该数据传输方法适用于图2所示实施例中的通信系统,在该通信系统中,第一设备和第二设备之间进行数据传输。可选的,如图3所示,该数据传输方法适用于图2所示实施例中的第一设备,该方法可以包括如下步骤:
步骤31:对待传输数据进行循环冗余校验CRC,得到校验数据。
可选的,在本申请实施例中,当第一设备有待传输数据需要发送给第二设备时,第一设备可以首先对待传输数据进行处理生成基带信号,再在该第一设备对应的时频资源上发送该基带信号。
可选的,在数据通信领域中,CRC是最常用的一种查错校验码,其特征是信息字段和校验字段的长度可以任意选定。具体的,CRC是一种数据传输检错功能,发送设备对数据进行多项式计算,并将得到的结果附在信息字段的后面,接收设备也执行类似的算法,以保证数据传输的正确性和完整性。
相应的,在本实施例中,在第一设备对待传输数据进行处理时,首先对待传输数据进行循环冗余校验CRC,得到校验数据。
例如,假设待传输数据为长度为A的输入比特a 0,a 1,…,a A-1,利用CRC校验多项式对上述待传输数据进行CRC,得到长度为L的校验比特p 0,p 1,…,p L-1,即本实施例中的校验数据。
其次,将长度为L的校验比特p 0,p 1,…,p L-1附在输入比特后得到信息比特b 0,b 1,…,b A+L-1。此时,当k=0,1,…,A-1时,b k=a k;当k=A,A+1,…,A+L-1时,b k=p k-A
步骤32:根据第一标识对该校验数据进行加扰,得到加扰后的校验数据。
可选的,为了使得第二设备可以区分传输数据的第一设备,本实施例中,可以利用第一标识对上述得到的校验数据进行加扰,得到加扰后的校验数据。
可选的,假设该第一标识为长度为S的比特x 0,x 1,…,x S-1,且通常L≥S。通常情况下,第一设备对上述校验数据中的最后S个比特进行加扰得到加扰后的校验数据,也即,第一设备可以利用第一标识(长度为S的比特x 0,x 1,…,x S-1)对上述信息比特(b 0,b 1,…,b A+L-1)的最后S个比特进行加扰,得到加扰后的信息比特c 0,c 1,…,c A+L-1。可选的,当k=0,1,…,A+L-S-1时,c k=b k;当k=A+L-S,…,A+L-1时,c k=(b k+x k-A+S-L)mod 2。
可选的,在本实施例中,第一标识可以是第一设备所在设备组内的标识。
例如,一个设备组包含16个第一设备,可以用4个比特表示第一设备的标识,此时, 第一标识的序列长度S=4。假设信息比特的最后四位是0101,第一设备的标识是0001,则加扰后的信息比特的最后四位是0100,即0101和0001的异或。
步骤33:对上述待传输数据和该加扰后的校验数据进行信道编码,得到编码数据。
可选的,在本实施例中,第一设备对待传输数据进行循环冗余校验CRC和加扰得到加扰后的校验数据之后,第一设备再对上述待传输数据和该加扰后的校验数据进行信道编码。由于,待传输数据和该加扰后的校验数据可以组成上述的加扰后的信息比特c 0,c 1,…,c A+L-1。因而,在本实施例中,第一设备可以对上述加扰后的信息比特c 0,c 1,…,c A+L-1进行信道编码得到编码数据。
步骤34:根据第二标识对上述编码数据进行加扰,得到加扰后的数据,其中,该第一标识和该第二标识的组合用于标识上述第一设备。
可选的,在本实施例中,为了保证待传输数据的传输可靠性,第一设备还可以利用第二标识对上述得到的编码数据进行加扰,得到加扰后的数据。
可选的,本步骤中的利用第二标识对编码数据进行加扰与上述利用第一标识对该校验数据进行加扰的过程类似。
可选的,通常情况下,加扰比特通常可以由协议中的Gold序列生成,其中Gold序列由一个31位的初值进行初始化。而对于一般的上行数据传输,加扰序列的初值和小区标识、终端设备标识有关。
然而,对于免授权(GF)传输机制,由于第二设备在解调数据之前无法获知第一设备标识,因而,第二设备无法对接收到的数据进行解扰。在本实施例中,可以利用第一设备所在设备组的标识(即,组无线网络临时标识(group radio network temporary identifier,G-RNTI))进行加扰。
可选的,在本实施例中,可以将加扰序列的初始值设置为:
Figure PCTCN2019107726-appb-000001
其中,n RNTI表示第二标识对应的序列,
Figure PCTCN2019107726-appb-000002
表示第一设备所在小区对应的序列。
可选的,当编码数据用d 0,d 1,…,d M-1表示,其中,M是编码数据的比特长度,加扰序列用w 0,w 1,…,w M-1表示时,加扰后的数据为
Figure PCTCN2019107726-appb-000003
其中
Figure PCTCN2019107726-appb-000004
步骤35:发送上述加扰后的数据。
可选的,在本实施例中,当第一设备对待传输数据经过校验、校验数据加扰、编码和编码数据加扰得到加扰后的数据之后,第一设备还可以将加扰后的数据再经过调制和资源映射处理后得到基带信号,并在该第一设备对应的时频资源上发送该基带信号。
本申请实施例提供的数据传输方法,通过对待传输数据进行CRC得到校验数据,根据第一标识对该校验数据进行加扰得到加扰后的校验数据,对上述待传输数据和该加扰后的校验数据进行信道编码得到编码数据,根据第二标识对上述编码数据进行加扰得到加扰后的数据,发送上述加扰后的数据。该技术方案,通过第一标识和第二标识的组合来标识上述第一设备,因而,通过第一标识对待传输数据经过CRC得到的校验数据进行加扰,利用第二标识对编码数据进行加扰,这样第二设备在接收到传输数据时,不需要利用使用同一时频资源的所有第一设备的标识进行解扰,也能判断出接收到的数据是否正确,且确定出发送数据的第一设备的标识,简化了检测复杂度,降低了出现的数据接收错误或虚警问题的概率。
可选的,在本实施例中,上述第一标识、第二标识可以通过配置信息的方式获取,也 即,该数据传输方法还可以包括如下步骤:
接收来自第二设备的配置信息。
可选的,该配置信息可以包括第一标识。
在本实施例中,第二设备可以向第一设备发送配置信息以为第一设备配置GF资源。GF资源可以包括第一设备以GF传输方式传输数据时使用的时频资源、参考信号、功率控制、码本、序列、调制编码方式等信息。上述配置信息可以携带于同一条配置消息中,也可以携带于不同的配置消息中,本申请不做限定。
可选的,该配置信息可以包括第一标识,该第一标识可以用来指示该第一设备在设备组中的具体编号(或索引),其为第一设备对上述校验数据(待传输数据进行CRC校验后得到的)进行加扰提供了实现可能。
可选的,在图3所示实施例的基础上,图4为本申请实施例提供的数据传输方法实施例二的流程示意图。在该实施例中,第一设备从第二设备接收到的该配置信息中还可以包括上述第二标识。
具体的,当第二设备通过发送配置信息将所有与该第二设备连接的第一设备分为多个设备组时,每个设备组可以被分配一个标识,即组无线网络临时标识G-RNTI,本实施例中,G-RNTI可以用第二标识表示。
因而,在本实施例中,当第一设备接收到来自第二设备的配置信息时,第一设备不仅可以根据该配置信息确定出该第一设备所属设备组的标识(即,第二标识),还可以根据该配置信息确定出该第一设备在所属设备组内的标识(即,第一标识)。
可选的,第一标识和第二标识均可以为一定长度的比特序列。具体的,参照上述图2所示的通信系统,具有相同第二标识(G-RNTI)的第一设备为一个设备组,G-RNTI为该设备组的身份标识,组内标识则为第一设备在设备组内的身份标识。
可选的,在本实施例中,该第二标识可以是从来自该第二设备的小区专用的配置消息或者用户组专用的配置消息中获取的。
可选的,第二设备向第一设备发送小区专用的配置消息或者用户组专用的配置消息,该配置消息里携带各个传输参数的配置信息,配置信息是用来配置各个传输参数对应的具体取值情况。因而,第一设备可以从该小区专用的配置消息或者用户组专用的配置消息中获取具体的第二标识。凡是可以正确接收同一个小区专用的配置消息或者用户组专用的配置消息的第一设备都可以获得同一个第二标识,那么这些第一设备可以被认为属于同一个设备组,该第二标识也可以被理解为该组的组标识。例如,图5A为第二设备分别向第二标识对应设备组中的每个第一设备发送配置消息的示意图。图5B为第二设备向第二标识对应设备组发送配置消息的示意图。如图5A所示,第二设备可以分别向每个第一设备发送设备专用的配置消息,以告知第一设备某些进行数据传输所需的传输参数。利用该方法为每个第一设备分别发送配置消息,提高了第一设备的接收可靠性和接收效率。
可选的,参照图5B所示,第二设备还可以通过小区专用的配置消息或者用户组专用的配置消息向第一设备所在的设备组发送配置消息。即该设备组中的每个第一设备均可以接收该配置消息。可选的,在某些场景下,该用户组专用的配置消息也可以称为设备组专用的配置消息,本申请实施例并不对其进行限定。
具体的,该设备组中的第一设备可以通过侦听利用第二标识加扰的控制信息,进而根 据该加扰的控制信息解调对应的数据信道以获取其中的配置信息。
例如,对于网络设备和终端设备之间的数据传输,终端设备组中的终端设备可以通过侦听利用该设备组标识加扰的下行控制信息(downlink control information,DCI),并根据下行控制信息指示解调对应的物理下行共享信道(physical downlink shared channel,PDSCH),获取其中的配置消息。可选的,该DCI可以是配置消息的一种,DCI里的字段就是对各种传输参数的一种具体配置,称之为配置信息。
可选的,配置消息还可以是无线资源控制(radio resource control,RRC)信令。
可选的,由于第二标识(G-RNTI)是设备组的标识,因而,第二设备可以通过小区专用的配置消息或者用户组专用的配置消息将该第二标识发送给第一设备,所以,第一设备可以从来自该第二设备的小区专用的配置消息或者用户组专用的配置消息中获取到。
可选的,小区专用的配置消息可以是第二设备通过广播或组播的方式通知给小区内的第一设备,以使小区内的所有第一设备均接收到该配置消息,进而确定出上述第二标识和传输参数配置信息。类似的,用户组专用的配置消息可以是第二设备通过广播的方式发送给某一用户组(设备组)内的所有第一设备,以使用户组内的所有用户均接收到该配置消息,不需要第二设备单独向每个第一设备发送,降低了信令开销。
可选的,通过小区专用的配置消息或者用户组专用的配置消息发送配置信息的方法,对于,对于所有的第一设备共享的资源配置信息,可以减少重复发送次数,而对于第一设备专用的资源配置信息,可以通过第一设备的组内ID进行标识。可选的,除了可以通过小区专用或者用户组专用发送配置消息降低发送配置信息的开销外,还可以采用用户分组的方法发送下行控制信息,以降低下行控制信息的信令开销。
可选的,作为一种示例,上述配置信息还可以包括该第二标识所对应的传输参数配置信息,该传输参数配置信息可以包括:时频资源的配置信息和/或参考信号的配置信息。
具体的,在免授权GF传输机制中,为了方便第二设备接收第一设备以GF传输机制传输的数据,第二标识和配置信息中的传输参数配置信息可以建立关联关系,即第二标识可以和配置信息中的为第二标识对应设备组中的不同的时频资源建立关联关系,第二标识也可以与同一时频资源的不同参考信号建立关联关系。
示例性的,图6A为不同时频资源对应不同G-RNTI的关系示意图。图6B为同一时频资源的不同参考信号对应不同G-RNTI的关系示意图。如图6A和图6B所示,每个时频资源块对应一个G-RNTI,或者同一时频资源块的不同参考信号对应一个G-RNTI,所以,第一设备接收到的配置信息中还可以包括第二标识所对应的传输参数配置信息,该第二标识为G-RNTI。因而,在本实施例中,第一设备根据该配置信息,确定出第二标识对应的设备组中的第一设备所使用的时频资源的配置信息和/或参考信号的配置信息。
可选的,在本实施例中,传输参数配置信息可以包括:时频资源的配置信息和/或参考信号的配置信息。可选的,该参考信号可以是解调参考信号(demodulation reference signal,DMRS),探测参考信号(sounding reference signal,SRS),同步信号(synchronous signal,SS),还可以是前导序列(preamble),或其他参考信号。
可选的,如果一个设备组中有两个以上的第一设备同时进行免授权的GF传输,则可能会发送碰撞。因而,本实施例中,第一设备可以首先利用第一标识对待传输数据进行CRC得到的校验数据进行加扰得到加扰后的校验数据,再在对待传输数据和加扰后的校验数据 进行信道编码得到编码数据之后,利用第二标识对编码数据进行加扰得到加扰后的数据,这样第二设备可以利用第一标识和第二标识可以唯一确定出发送待传输数据的第一设备,因而,在一个设备组中有两个以上的第一设备同时进行免授权的GF传输且出现发送数据间的碰撞问题时,也可以识别出发出数据的第一设备,降低了数据接收错误问题的概率。
值得说明的是,在本实施例中,上述配置信息除了包括第一标识、第二标识、第二标识所对应的传输参数配置信息,还可以包括第一设备进行数据传输所需要的功率控制、码本、序列、调制编码方式等传输参数的配置信息。本申请实施例并不对配置信息的具体包含信息进行限定,其可以根据实际情况进行限定。
相应的,上述步骤35(发送上述加扰后的数据)可以通过如下方式实现:
根据上述第二标识所对应的传输参数配置信息发送上述加扰后的数据。
可选的,在本实施例中,由于配置信息还可以包括第二标识所对应的传输参数配置信息,因而,第一设备根据上述第二标识所对应的传输参数配置信息可以确定出进行数据传输所需要的时频资源和/或参考信号,进而可以在该时频资源上发送上述加扰后的数据。
可选的,参照图4所示,作为另一种示例,上述步骤35(发送上述加扰后的数据)还可以通过如下步骤41和步骤42实现:
步骤41:根据上述第二标识、以及预设的对应关系确定该第二标识所对应的传输参数配置信息。
其中,该对应关系是指用于加扰上述编码数据的标识与传输参数配置信息的关系,该传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息。
可选的,在本实施例中,第一设备可以根据配置信息获取到预设的对应关系,即获取到预设的用于加扰该编码数据的标识与传输参数配置信息的关系,因而,第一设备在获取到第二标识和该预设的对应关系后,可以确定出该第二标识所对应的传输参数配置信息,即第二标识所对应的时频资源的配置信息和/或参考信号的配置信息。
步骤42:根据该第二标识所对应的传输参数配置信息发送上述加扰后的数据。
可选的,第一设备对待传输数据进行处理得到加扰后的数据之后,可以根据第二标识所对应的时频资源的配置信息和/或参考信号的配置信息,利用该参考信号在该时频资源上发送该加扰后的数据。
本申请实施例提供的数据传输方法,第一设备通过根据上述第二标识、以及预设的对应关系确定该第二标识所对应的传输参数配置信息,进而根据该第二标识所对应的传输参数配置信息发送上述加扰后的数据。该技术方案中,通过根据确定的传输参数配置信息发送上述加扰后的数据,简化了后续第二设备获取该加扰后的数据的过程。
可选的,在图3所示实施例的基础上,图7为本申请实施例提供的数据传输方法实施例三的流程示意图。在该实施例中,上述配置信息除包括第一标识之外,还可以包括传输参数配置信息,该传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息。
可选的,在本实施例中,第二设备向第一设备发送配置信息为第一设备配置GF资源时,第二设备还可以为该GF资源配置一个对应的传输参数配置信息,进而利用该传输参数配置信息确定出用于数据加扰的上述标识,即加扰标识(scrambling ID,SID)。
可选的,该传输参数配置信息可以包括时频资源的配置信息,例如,时频资源标识(resource ID,RID),时隙索引,OFDM符号索引等,或者可以包括参考信号的配置信息, 例如,参考信号的标识,参考信号端口索引,或者包括时频资源的配置信息和参考信号的配置信息。
相应的,参照图7所示,该数据传输方法还可以包括如下步骤:
步骤71:根据上述传输参数配置信息确定上述第二标识。
可选的,在本实施例中,由于传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息,因而,根据传输参数配置信息与第二标识的对应关系可以确定出第二标识。
示例性的,图8A为不同的时频资源对应的不同SID的关系示意图。图8B为同一时频资源的不同参考信号对应的不同SID的关系示意图。如图8A和图8B所示,每个时频资源块对应一个SID,同一时频资源块的不同参考信号对应一个SID,所以,第一设备接收到的配置信息中还可以除包括第一标识外,还包括该传输参数配置信息,进而根据该传输参数配置信息可以确定出SID,即第二标识。
可选的,与上述图4所示实施例中的类似,该参考信号也可以是DMRS,还可以是前导序列(Preamble),或其他参考信号。
相应的,上述步骤35(发送上述加扰后的数据)可以替换为如下步骤:
步骤72:根据上述传输参数配置信息发送该加扰后的数据。
可选的,在本实施例中,在配置信息包括传输参数配置信息时,可以根据该传输参数配置信息确定出数据传输所需要的时频资源的配置信息和/或参考信号的配置信息,进而可以在该时频资源上利用该参考信号发送上述加扰后的数据。
可选的,该配置信息中的传输参数配置信息是从小区专用的配置消息或者用户组专用的配置消息中获取的。
可选的,关于小区专用的配置消息和用户专用的配置消息的具体解释可参见上述图4对应实施例中图5B对应示意图的介绍部分,此处不再赘述。
可选的,在上述图3所示实施例的基础上,图9为本申请实施例提供的数据传输方法实施例四的流程示意图。如图9所示,在本实施例中,上述步骤32(根据第一标识对该校验数据进行加扰,得到加扰后的校验数据)可以通过如下步骤实现:
步骤91:根据该第一标识生成加扰序列,该加扰序列的长度大于该第一标识的序列长度。
示例性的,图10A和图10B为本实施例中利用第一标识对校验数据进行加扰出现虚警问题的示意图。在通信系统中,由于噪声的影响,一种情况,如图10A所示,第二设备可能在第一设备没有发送数据包时进行检测,此时,经过CRC校验时可能得到校验比特为0001,因而,第二设备可能判断出是第一标识为0001的第一设备发送的数据包,所以该判断结果是不正确的,因而会出现虚警问题。另一种情况,如图10B所示,第二设备在第一设备发送数据包,但第二设备未能检测成功时,即第一设备发送数据包时用的校验比特是0001,但第二设备经过CRC校验时得到的是校验比特为0011,此时判断出是第一标识为0011的第一设备发送的数据包,即该判断结果也是不正确的,因而也会出现虚警问题。
可选的,在本实施例中,为了进一步减小虚警问题发生的概率,第一设备可以增加加扰的比特数。例如,若第一标识的序列长度S=4,校验比特数L=24,因而,可以将第一标识的序列长度重复多次形成新的加扰序列。
可选的,图11A和图11B为本实施例中通过增加加扰比特数据以减少虚警问题的示意图。 在通信系统中,图11A和图11B所示,可以将第一标识重复两次形成加扰比特,只有8个比特中前4个比特和后4个比特完全相同才判断为正确接收,因此,虚警问题出现的概率较只有4个校验比特时大大降低。
具体地,在本实施例中,当第一标识为长度为S的比特x 0,x 1,…,x S-1,此时,加扰序列可以为长度为2S的比特y 0,y 1,…,y 2S-1,因而,当k=0,1,…,S-1时,y k=x k;当k=S,S+1,…,2S-1时,y k=x k-S。当第一设备对校验数据中的最后2S比特进行加扰时,当k=0,1,…,A+L-2S-1时,加扰后的信息比特c k与加扰前的信息比特b k相等,即c k=b k;当k=A+L-2S,…,A+L-1时,c k=(b k+y k-A+2S-L)mod 2。
步骤92:利用该加扰序列对上述校验数据进行加扰,得到加扰后的校验数据。
可选的,在本实施例中,在第一设备根据该第一标识生成序列长度大于该第一标识的序列长度的加扰序列后,便可以利用该加扰序列对上述校验数据进行加扰,相应的得到加扰后的校验数据。
可选的,关于该步骤中第一设备如果利用加扰序列对校验数据进行加扰的具体过程可以参见上述图3所示实施例步骤32中的记载,此处不再赘述。
本申请实施例提供的数据传输方法,在对校验数据进行加扰时,首先根据该第一标识生成加扰序列,该加扰序列的长度大于该第一标识的序列长度,再利用该加扰序列对上述校验数据进行加扰,得到加扰后的校验数据。该技术方案可以进一步降低数据传输时可能出现的虚警问题的概率。
图12为本申请实施例提供的数据传输方法实施例五的流程示意图。该数据传输方法适用于图2所示实施例中的第二设备。如图12所示,该数据传输方法可以包括如下步骤:
步骤121:接收来自第一设备的传输数据。
可选的,在本实施例中,当第一设备在确定的时频资源上向第二设备发送传输数据之后,该第二设备可以在对应的时频资源上检测到该传输数据,从而可以接收到来自第一设备的传输数据。
可选的,该传输数据可以是第一设备通过基带信号发送给第二设备的,因而,第二设备在接收到该基带信号后,可以根据第一设备对待传输数据处理的反过程,首先对该基带信号进行解映射、信道估计和解调的处理,得到编码数据的软信息,也即,本实施例中的传输数据。
可选的,该软信息通常用对数似然比(log likelihood ratio,LLR)表示,表示比特取0值的概率和取1值的概率比值的对数值。
步骤122:根据第二标识对上述传输数据进行解扰,得到解扰后的传输数据。
可选的,在本实施例中,与第一设备利用第二标识对编码数据进行加扰的过程相反,第二设备在获取到第一设备发送的传输数据之后,根据接收该传输数据所使用的传输参数配置信息(时频资源的配置信息和/或参考信号的配置信息),可以确定出第二标识。例如,根据时频资源和/或参考信号与第二标识的对应关系,可以确定出用于解扰使用时频资源和/参考信号接收到的传输数据的第二标识。根据第二标识,对接收到的上述传输数据进行解扰。
可选的,第二设备可以根据GF资源确定出该第二标识(可以是G-RNTI,也可以是SID, 还可以是RID),因而,根据该第二标识可以生成加扰序列,进而利用该加扰序列对步骤121中得到的编码数据的软信息进行解扰。
可选的,当根据该第二标识可以生成的加扰序列为0时,则保持对应编码比特的对数似然比;当根据该第二标识可以生成的加扰比特为1时,则对上述编码比特的对数似然比取反。
步骤123:对上述解扰后的传输数据进行信道译码,得到译码后的数据。
可选的,由于第一设备待传输数据和加扰后的校验数据进行了信道编码处理,因而,在本实施例中,第二设备可以对上述解扰后的传输数据进行信道译码,从而可以得到译码后的数据。
步骤124:对上述译码后的数据进行循环冗余校验CRC,得到校验数据。
可选的,在本实施例中,第二设备可以将所有的第一设备进行分组,为每组内的第一设备进行分配标识,该第一标识就是第一设备在设备组中标识。可选的,当根据第二标识确定出传输数据的第一设备所在的设备组或者使用的传输参数配置信息后,第二设备在对译码后的数据进行循环冗余校验CRC时,可以得到与第一标识有关系的校验数据。
可选的,在本实施例中,第二设备对上述得到的译码后的数据进行CRC,可以得到校验数据。在第二设备接收数据正确时,该校验数据可以是上述第一标识,也可以是第一设备根据第一标识生成的加扰序列。
对译码后的数据进行CRC校验的具体过程为现有技术,此处不再赘述。
步骤125:根据该校验数据判断该译码后的数据是否正确,并确定该第一设备的第一标识。
其中,该第一标识和该第二标识的组合用于标识该第一设备。
在一实施例中,如果第一设备在对CRC校验数据进行加扰时使用的是第一标识,第二设备在步骤124中得到的校验数据也是一个标识,将该标识与第二标识所对应的第一设备组的各个第一设备的第一标识进行匹配;若匹配成功,则表明该译码后的数据正确,该校验数据也即为发送所述传输数据的第一设备的第一标识;若匹配不成功,则表明该译码后的数据不正确,也即第一设备发送的传输数据未被正确接收。
在一实施例中,如果第一设备在对CRC校验数据进行加扰时使用的是根据第一标识生成的加扰序列(例如,通过将第一标识进行1次或者多次重复形成的加扰序列),第二设备在步骤124中得到的校验数据也是和发送端在做CRC校验数据的加扰时所使用的加扰序列同等长度的序列,将该序列与基于第二标识所对应的第一设备组的各个第一设备的第一标识生成的加扰序列进行匹配;若匹配成功,则表明该译码后的数据正确;若匹配不成功,则表明该译码后的数据不正确,也即第一设备发送的传输数据未被正确接收。若译码后的数据不正确,则根据生成加扰序列的规则从校验数据中还原出第一设备的第一标识。
可选的,在本实施例中,当第二设备在上述步骤123中对解扰后的传输数据进行信道译码得到译码后的数据之后,以及在步骤124中得到校验数据之后,第二设备可以根据该校验数据判断该校验数据是否为第二标识对应设备组中的某个第一设备的标识或者某个第一设备的标识对应的加扰序列,当该校验数据为第二标识对应设备组中的某个第一设备的标识或者某个第一设备的标识对应的加扰序列时,表明得到的该译码后的数据正确,且 该校验数据对应的某个第一设备的标识即为第一标识。
本申请实施例提供的数据传输方法,第二设备通过接收来自第一设备的传输数据,根据第二标识对该传输数据进行解扰得到解扰后的传输数据,再对解扰后的传输数据进行信道译码得到译码后的数据,对该译码后的数据进行循环冗余校验CRC,得到校验数据,最后根据该校验数据判断该译码后的数据是否正确,并确定所述第一设备的第一标识,其中,该第一标识和该第二标识的组合用于标识该第一设备。该技术方案中,通过第一标识和第二标识的组合来标识上述第一设备,因而,根据第二标识对传输数据进行解扰得到解扰后的传输数据,再根据得到的校验数据确定出第一设备的第一标识,这样第二设备不需要利用使用同一时频资源的所有第一设备的标识进行解扰便能确定出发送数据的第一设备,简化了检测复杂度,降低了出现数据接收错误或虚警问题的概率。
可选的,在本实施例中,该数据传输方法还可以包括如下步骤:
向第一设备发送配置信息,该配置信息可以包括上述第一标识。
在本实施例中,第二设备可以通过向第一设备发送配置消息为第一设备配置GF资源。该配置消息中包括配置信息,可选的,该配置信息可以包括第一标识,该第一标识可以用来表示该第一设备的具体位置。
可选的,在本申请实施例的一种可能实现方式中,该配置信息还可以包括上述第二标识。
可选的,该第二标识可以是组无线网络临时标识G-RNTI,也可以是加扰标识SID。
可选的,该第二标识是包含在所述第二设备的小区专用的配置消息或者用户组专用的配置消息中的。
在本实施例中,关于配置信息包括的内容、第一标识、第二标识的具体介绍可参见上述图4所示实施例对应部分的记载,此处不再赘述。
可选的,该配置信息还可以包括第二标识所对应的传输参数配置信息,该传输参数配置信息可以包括:时频资源的配置信息和/或参考信号的配置信息。
相应的,作为一种示例,上述步骤121(接收来自第一设备的传输数据)可以通过如下步骤实现:
根据该第二标识所对应的传输参数配置信息接收该传输数据。
可选的,在本实施例中,当第二设备向第一设备发送的配置信息中包括第二标识所对应的传输参数配置信息时,第二设备可以知道第一设备会在哪个时频资源上或者利用哪个参考信号发送数据,因而,第二设备可以根据该第二标识所对应的传输参数配置信息接收该传输数据。
可选的,作为另一种示例,上述步骤121(接收来自第一设备的传输数据)可以通过如下步骤实现:
步骤A1:根据上述第二标识、以及预设的对应关系确定第二标识所对应的传输参数配置信息。
其中,该对应关系是指用于解扰传输数据的标识与传输参数配置信息的关系,该传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息。
可选的,在本实施例中,根据配置信息中隐含包括了预设的对应关系,即预设的用于解扰传输数据的标识与传输参数配置信息的关系,因而,第二设备在确定出第二标识和上 述预设的对应关系后,可以确定出该第二标识所对应的传输参数配置信息,即第二标识所对应的时频资源的配置信息和/或参考信号的配置信息。
步骤A2:根据上述第二标识所对应的传输参数配置信息接收该传输数据。
可选的,由于第一设备可以根据该第二标识所对应的传输参数配置信息发送上述加扰后的数据,即传输数据,因而,在本实施例中,第二设备可以根据第二标识所对应的时频资源的配置信息和/或参考信号的配置信息,利用该参考信号在该时频资源上接收上述传输数据。
可选的,在本申请实施例的另一种可能实现方式中,上述配置信息还包括传输参数配置信息,该传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息。
相应的,该数据传输方法还可以包括如下步骤:
根据该传输参数配置信息确定所述第二标识。
可选的,在本实施例中,该步骤的具体实现方式与第一设备传输参数配置信息确定上述第二标识的步骤类似,具体可参加上述图7所示实施例中步骤71的记载,此处不再赘述。
相应的,上述步骤121(接收来自第一设备的传输数据)可以替换为如下步骤:
根据所述传输参数配置信息接收该传输数据。
可选的,在本申请的实施例中,在配置信息包括传输参数配置信息时,可以根据该传输参数配置信息确定出数据传输所需要的时频资源的配置信息和/或参考信号的配置信息,进而可以在该时频资源上接收上述参考信号对应的传输数据。
可选的,该配置信息中的传输参数配置信息是包含在第二设备的小区专用的配置消息或者用户组专用的配置消息中的。
关于小区专用的配置消息和用户专用的配置消息的具体解释可参见上述图4对应实施例中图5B对应示意图的介绍部分,此处不再赘述。
可选的,在上述图12所示实施例的基础上,图13为本申请实施例提供的数据传输方法实施例六的流程示意图。如图13所示,在本实施例中,上述步骤125(根据该校验数据判断该译码后的数据是否正确,并确定该第一设备的第一标识)可以通过如下步骤实现:
步骤131:判断该校验数据是否为第二标识对应设备组中的第一设备的标识或者第一设备的标识对应的加扰序列;若是,执行步骤132,若否,执行步骤133。
可选的,该加扰序列的长度大于第一标识的序列长度。
可选的,本申请实施例中,第二设备对译码后的数据进行循环冗余校验CRC,得到校验数据之后,首先判定该校验数据是否为第二标识对应设备组中的第一设备的标识,在该校验数据不是第二标识对应设备组中的任何第一设备的标识时,还可以判断该校验数据是否为第二标识对应设备组中的第一设备的标识对应的加扰序列。这是由于在第一设备侧,第一设备为了进一步降低数据传输过程中可能出现的虚警问题的概率,可以使用利用第一标识生成的长度大于第一标识的序列长度的加扰序列进行加扰。
步骤132:确定该译码后的数据正确,并确定该第一设备的第一标识。
步骤133:确定该译码后的数据错误。
可选的,在本实施例中,当该校验数据为第二标识对应设备组中的第一设备的标识或者第一设备的标识对应的加扰序列时,确定该第二设备接收的数据正确,否则,确定该第 二设备接收的数据错误。
本申请实施例提供的数据传输方法,第二设备判断该校验数据是否为第二标识对应设备组中的第一设备的标识或者第一设备的标识对应的加扰序列,若是,确定该译码后的数据正确,并确定该第一设备的第一标识,否则,确定该译码后的数据错误。该技术方案降低了数据传输时可能出现的虚警问题的概率。
图14为本申请实施例提供的数据传输装置实施例一的结构示意图。该数据传输装置适用于第一设备,即该装置可以集成在第一设备中,也可以是第一设备。示例性的,该第一设备可以是终端设备。可选的,如图14所示,该装置可以包括:处理模块141和收发模块142。
其中,该处理模块141,用于对待传输数据进行循环冗余校验CRC,得到校验数据,根据第一标识对所述校验数据进行加扰,得到加扰后的校验数据,对所述待传输数据和所述加扰后的校验数据进行信道编码,得到编码数据,根据第二标识对所述编码数据进行加扰,得到加扰后的数据,其中,所述第一标识和所述第二标识的组合用于标识所述第一设备;
该收发模块142,用于发送所述加扰后的数据。
可选的,在本申请实施例的一种可能实现方式中,该收发模块142,还用于接收来自第二设备的配置信息,所述配置信息包括所述第一标识。
可选的,作为一种示例,所述配置信息还包括所述第二标识。
可选的,所述第二标识是从来自所述第二设备的小区专用的配置消息或者用户组专用的配置消息中获取的。
可选的,作为另一种示例,所述配置信息还包括所述第二标识所对应的传输参数配置信息,所述传输参数配置信息包括:时频资源的配置信息和/或参考信号的配置信息;
该收发模块142,用于发送所述加扰后的数据,具体为:
该收发模块142,具体用于根据所述第二标识所对应的传输参数配置信息发送所述加扰后的数据。
可选的,作为再一种示例,该收发模块142,用于发送所述加扰后的数据,具体为:
该收发模块142,具体用于根据所述第二标识、以及预设的对应关系确定所述第二标识所对应的传输参数配置信息,根据所述第二标识所对应的传输参数配置信息发送所述加扰后的数据;
其中,所述对应关系是指用于加扰所述编码数据的标识与传输参数配置信息之间的对应关系,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息。
可选的,在本申请实施例的上述可能实现方式中,所述配置信息还包括传输参数配置信息,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;
该处理模块141,还用于根据所述传输参数配置信息确定所述第二标识;
该收发模块142,用于发送所述加扰后的数据,具体为:
该收发模块142,具体用于根据所述传输参数配置信息发送所述加扰后的数据。
可选的,所述配置信息中的传输参数配置信息是从小区专用的配置消息或者用户组专用的配置消息中获取的。
可选的,在本申请实施例的另一种可能实现方式中,该处理模块142,用于根据第一 标识对所述校验数据进行加扰,得到加扰后的校验数据,具体为:
该处理模块142,具体用于根据所述第一标识生成加扰序列,所述加扰序列的长度大于所述第一标识的序列长度,利用所述加扰序列对所述校验数据进行加扰,得到加扰后的校验数据。
本实施例的数据传输装置可用于执行图3、图4、图7和图9所示方法实施例的实现方案,具体实现方式和技术效果类似,这里不再赘述。
图15为本申请实施例提供的数据传输装置实施例二的结构示意图。该数据传输装置适用于第二设备,即该装置可以集成在第二设备中,也可以是第二设备。示例性的,该第二设备可以是网络设备,也可以是终端设备。可选的,如图15所示,该装置可以包括:收发模块151和处理模块152。
其中,该收发模块151,用于接收来自第一设备的传输数据;
该处理模块152,用于根据第二标识对所述传输数据进行解扰,得到解扰后的传输数据,对所述解扰后的传输数据进行信道译码,得到译码后的数据,对所述译码后的数据进行循环冗余校验CRC,得到校验数据;
根据所述校验数据判断所述译码后的数据是否正确,并确定所述第一设备的第一标识,其中,所述第一标识和所述第二标识的组合用于标识所述第一设备。
可选的,在本申请实施例的一种可能实现方式中,该收发模块151,还用于向所述第一设备发送配置信息,所述配置信息包括所述第一标识。
可选的,作为一种示例,所述配置信息还包括所述第二标识。
可选的,所述配置信息中的所述第二标识携带在所述第二设备发送的小区专用的配置消息或者用户组专用的配置消息中。
可选的,作为另一种示例,所述配置信息还包括所述第二标识所对应的传输参数配置信息,所述传输参数配置信息包括:时频资源的配置信息和/或参考信号的配置信息;
该收发模块151,用于接收来自第一设备的传输数据,具体为:
该收发模块151,具体用于根据所述第二标识所对应的传输参数配置信息接收所述传输数据。
可选的,作为再一种示例,该收发模块151,用于接收来自第一设备的传输数据,具体为:
该收发模块151,具体用于根据所述第二标识、以及预设的对应关系确定所述第二标识所对应的传输参数配置信息,根据所述第二标识所对应的传输参数配置信息接收所述传输数据,其中,所述对应关系是指用于解扰所述传输数据的标识与传输参数配置信息之间的对应关系,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息。
可选的,在本申请实施例的上述可能实现方式中,所述配置信息还包括传输参数配置信息,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;
该处理模块152,还用于根据所述传输参数配置信息确定所述第二标识;
相应的,该收发模块151,用于接收来自第一设备的传输数据,具体为:
该收发模块151,具体用于根据所述传输参数配置信息接收所述传输数据。
可选的,所述配置信息中的传输参数配置信息携带在所述第二设备发送的小区专用的配置消息或者用户组专用的配置消息中。
可选的,在本申请实施例的另一种可能实现方式中,该处理模块152,用于根据所述校验数据判断所述译码后的数据是否正确,并确定所述第一设备的第一标识,具体为:
该处理模块152,具体用于判断该校验数据是否为第二标识对应设备组中的第一设备的标识或者第一设备的标识对应的加扰序列,若是,确定该译码后的数据正确,并确定该第一设备的第一标识,否则,确定该译码后的数据错误。
本实施例的数据传输装置可用于执行图12和图13所示方法实施例的实现方案,具体实现方式和技术效果类似,这里不再赘述。
需要说明的是,应理解以上装置的各个模块的划分仅仅是一种逻辑功能的划分,实际实现时可以全部或部分集成到一个物理实体上,也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现;也可以全部以硬件的形式实现;还可以部分模块通过处理元件调用软件的形式实现,部分模块通过硬件的形式实现。例如,处理模块可以为单独设立的处理元件,也可以集成在上述装置的某一个芯片中实现,此外,也可以以程序代码的形式存储于上述装置的存储器中,由上述装置的某一个处理元件调用并执行以上处理模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起,也可以独立实现。这里所述的处理元件可以是一种集成电路,具有信号的处理能力。在实现过程中,上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如,以上这些模块可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(application specific integrated circuit,ASIC),或,一个或多个微处理器(digital signal processor,DSP),或,一个或者多个现场可编程门阵列(field programmable gate array,FPGA)等。再如,当以上某个模块通过处理元件调度程序代码的形式实现时,该处理元件可以是通用处理器,例如中央处理器(central processing unit,CPU)或其它可以调用程序代码的处理器。再如,这些模块可以集成在一起,以片上系统(system-on-a-chip,SOC)的形式实现。
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。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述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。所述计算机指令可以存储在可读存储介质中,或者从一个可读存储介质向另一个可读存储介质传输,例如,所述计算机指令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(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。所述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。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘solid state disk(SSD))等。
图16示出了上述实施例中所涉及的第一设备的一种可能的设计结构的简化示意图。如图16所示,该第一设备可以包括:控制器/处理器161、收发器162和存储器163。
其中,在本申请的实施例中,该控制器/处理器161可以对第一设备的动作进行控制管理,用于执行上述图3、图4、图7和图9所示实施例中的各个步骤,和/或,用于本申请所描述技术的其他过程。
例如,该控制器/处理器161用于对待传输数据进行循环冗余校验CRC,得到校验数据,根据第一标识对所述校验数据进行加扰,得到加扰后的校验数据,对所述待传输数据和所述加扰后的校验数据进行信道编码,得到编码数据,根据第二标识对所述编码数据进行加扰,得到加扰后的数据,其中,该第一标识和该第二标识的组合用于标识该第一设备等操作过程。
作为示例,控制器/处理器161用于支持第一设备执行图3、图4、图7和图9所示实施例中的中各个步骤。
该收发器162可以用于通过天线向第二设备发送上述加扰后的数据。可选的,该收发器162还可以用于接收第二设备通过天线发送的配置信息。该收发器162还可以是由独立功能的发送器和接收器实现,两者均可以通过天线等形式实现,本申请实施例并不对其限定。
该存储器163用于存储用于第一设备的程序代码和数据。例如,该存储器163可以用于存储收发器162通过配置指令向第二设备发送的加扰后的数据,以及存储控制器/处理器161的执行指令和执行结果。
示例性的,如图16所示,本实施例中的装置还可以包括:调制解调处理器164。此时,控制器/处理器161执行的上述图3、图4、图7和图9所示实施例中的各个步骤可以由该调制解调处理器164执行。
例如,在调制解调处理器164中,编码器165可以用于接收要在上行链路上发送的待传输数据,并对待传输数据进行处理(例如,CRC、格式化、编码和交织)。调制器166用于进一步处理(例如,符号映射和调制)编码后的待传输数据。解调器167用于处理(例如,解调)从第二设备接收到的下行链路信号。解码器168用于进一步处理(例如,解交织和解码)该下行链路信号。编码器165、调制器166、解调器167和解码器168可以由合成的调制解调处理器164来实现。这些单元根据无线接入网采用的无线接入技术(例如,LTE及其他演进系统的接入技术)。
本实施例的数据传输装置可用于执行上述图3、图4、图7和图9所示实施例的实现方案,具体实现方式和技术效果类似,这里不再赘述。
图17示出了上述实施例中所涉及的第二设备的一种可能的设计结构的简化示意图。如图17所示,该第二设备可以包括:收发器171、控制器/处理器172和存储器173。
其中,在本申请实施例中,该收发器171用于利用天线接收来自第一设备的传输数据。可选的,该收发器171还可以用于向第一设备发送配置信息。同理,该收发器171还可以由独立功能的发送器和接收器实现,两者均可以通过天线等形式实现,本申请实施例并不对其限定。
该控制器/处理器172用于对第二设备的动作进行控制管理,执行各种功能来支持第二设备的通信服务。例如,控制器/处理器172用于支持第二设备执行图12和图13所示实施例的各个步骤,和/或,用于本申请所描述的技术的其他过程。
例如,该控制器/处理器172用于根据第二标识对传输数据进行解扰,得到解扰后的传输数据,对解扰后的传输数据进行信道译码,得到译码后的数据,对所述译码后的数据进 行循环冗余校验CRC,得到校验数据;根据所述校验数据判断所述译码后的数据是否正确,并确定所述第一设备的第一标识,其中,所述第一标识和所述第二标识的组合用于标识所述第一设备。
存储器173用于存储用于该第二设备的程序代码和数据。示例性的,该存储器173可以用于存储控制器/处理器172处理得到的待传输数据,以及存储控制器/处理器172的执行指令和执行结果。
值得说明的是,该第二设备同第一设备类似,该第二设备也可以包括调制解调处理器。在本实施例中,控制器/处理器172执行的上述图12和图13所示实施例中的各个步骤可以由该调制解调处理器执行,此处不再赘述。
示例性的,用于执行本申请实施例的上述第一设备、第二设备功能的控制器/处理器可以是中央处理器(CPU),通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC),现场可编程门阵列(FPGA)或者其他可编程逻辑器件、晶体管逻辑器件,硬件部件或者其任意组合,其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框,模块和电路。所述处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。
本实施例的数据传输装置可用于执行图12和图13所示方法实施例的实现方案,具体实现方式和技术效果类似,这里不再赘述。
示例性的,本申请实施例还提供一种存储介质,所述存储介质中存储有指令,当其在计算机上运行时,使得计算机执行如上述图3、图4、图7和图9所示实施例的方法或者图12和图13所示实施例的方法。
示例性的,本申请实施例还提供一种运行指令的芯片,所述芯片用于执行上述图3、图4、图7和图9所示实施例的方法或者图12和图13所示实施例的方法。
示例性的,本申请实施例还提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述图3、图4、图7和图9所示实施例的方法或者图12和图13所示实施例的方法。
本申请中,“至少一个”是指一个或者多个,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B的情况,其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系;在公式中,字符“/”,表示前后关联对象是一种“相除”的关系。“以下至少一项(个)”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a,b,或c中的至少一项(个),可以表示:a,b,c,a-b,a-c,b-c,或a-b-c,其中,a,b,c可以是单个,也可以是多个。
可以理解的是,在本申请的实施例中涉及的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的实施例的范围。
可以理解的是,在本申请的实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请的实施例的实施过程构成任何限定。

Claims (22)

  1. 一种数据传输方法,适用于第一设备,其特征在于,包括:
    对待传输数据进行循环冗余校验CRC,得到校验数据;
    根据第一标识对所述校验数据进行加扰,得到加扰后的校验数据;
    对所述待传输数据和所述加扰后的校验数据进行信道编码,得到编码数据;
    根据第二标识对所述编码数据进行加扰,得到加扰后的数据,其中,所述第一标识和所述第二标识的组合用于标识所述第一设备;
    发送所述加扰后的数据。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    接收来自第二设备的配置信息,所述配置信息包括所述第一标识。
  3. 根据权利要求2所述的方法,其特征在于,所述配置信息还包括所述第二标识。
  4. 根据权利要求3所述的方法,其特征在于,所述第二标识是从来自所述第二设备的小区专用的配置消息或者用户组专用的配置消息中获取的。
  5. 根据权利要求3或4所述的方法,其特征在于,所述配置信息还包括所述第二标识所对应的传输参数配置信息,所述传输参数配置信息包括:时频资源的配置信息和/或参考信号的配置信息;
    所述发送所述加扰后的数据包括:
    根据所述第二标识所对应的传输参数配置信息发送所述加扰后的数据。
  6. 根据权利要求3或4所述的方法,其特征在于,所述发送所述加扰后的数据包括:
    根据所述第二标识、以及预设的对应关系确定所述第二标识所对应的传输参数配置信息,其中,所述对应关系是指用于加扰所述编码数据的标识与传输参数配置信息之间的对应关系,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;
    根据所述第二标识所对应的传输参数配置信息发送所述加扰后的数据。
  7. 根据权利要求2所述的方法,其特征在于,所述配置信息还包括传输参数配置信息,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;
    所述方法还包括:
    根据所述传输参数配置信息确定所述第二标识;
    所述发送所述加扰后的数据包括:
    根据所述传输参数配置信息发送所述加扰后的数据。
  8. 根据权利要求7所述的方法,其特征在于,所述配置信息中的传输参数配置信息是从小区专用的配置消息或者用户组专用的配置消息中获取的。
  9. 根据权利要求1到8任一项所述的方法,其特征在于,所述根据第一标识对所述校验数据进行加扰,得到加扰后的校验数据,包括:
    根据所述第一标识生成加扰序列,所述加扰序列的长度大于所述第一标识的序列长度;
    利用所述加扰序列对所述校验数据进行加扰,得到加扰后的校验数据。
  10. 一种数据传输方法,适用于第二设备,其特征在于,包括:
    接收来自第一设备的传输数据;
    根据第二标识对所述传输数据进行解扰,得到解扰后的传输数据;
    对所述解扰后的传输数据进行信道译码,得到译码后的数据;
    对所述译码后的数据进行循环冗余校验CRC,得到校验数据;
    根据所述校验数据判断所述译码后的数据是否正确,并确定所述第一设备的第一标识,其中,所述第一标识和所述第二标识的组合用于标识所述第一设备。
  11. 一种数据传输装置,适用于第一设备,其特征在于,包括:处理模块和收发模块;
    所述处理模块,用于对待传输数据进行循环冗余校验CRC,得到校验数据,根据第一标识对所述校验数据进行加扰,得到加扰后的校验数据,对所述待传输数据和所述加扰后的校验数据进行信道编码,得到编码数据,根据第二标识对所述编码数据进行加扰,得到加扰后的数据,其中,所述第一标识和所述第二标识的组合用于标识所述第一设备;
    所述收发模块,用于发送所述加扰后的数据。
  12. 根据权利要求11所述的装置,其特征在于,所述收发模块,还用于接收来自第二设备的配置信息,所述配置信息包括所述第一标识。
  13. 根据权利要求12所述的装置,其特征在于,所述配置信息还包括所述第二标识。
  14. 根据权利要求13所述的装置,其特征在于,所述第二标识是从来自所述第二设备的小区专用的配置消息或者用户组专用的配置消息中获取的。
  15. 根据权利要求13或14所述的装置,其特征在于,所述配置信息还包括所述第二标识所对应的传输参数配置信息,所述传输参数配置信息包括:时频资源的配置信息和/或参考信号的配置信息;
    所述收发模块,用于发送所述加扰后的数据,具体为:
    所述收发模块,具体用于根据所述第二标识所对应的传输参数配置信息发送所述加扰后的数据。
  16. 根据权利要求13或14所述的装置,其特征在于,所述收发模块,用于发送所述加扰后的数据,具体为:
    所述收发模块,具体用于根据所述第二标识、以及预设的对应关系确定所述第二标识所对应的传输参数配置信息,根据所述第二标识所对应的传输参数配置信息发送所述加扰后的数据;
    其中,所述对应关系是指用于加扰所述编码数据的标识与传输参数配置信息之间的对应关系,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息。
  17. 根据权利要求12所述的装置,其特征在于,所述配置信息还包括传输参数配置信息,所述传输参数配置信息包括时频资源的配置信息和/或参考信号的配置信息;
    所述处理模块,还用于根据所述传输参数配置信息确定所述第二标识;
    所述收发模块,用于发送所述加扰后的数据,具体为:
    所述收发模块,具体用于根据所述传输参数配置信息发送所述加扰后的数据。
  18. 根据权利要求17所述的装置,其特征在于,所述配置信息中的传输参数配置信息是从小区专用的配置消息或者用户组专用的配置消息中获取的。
  19. 根据权利要求11到18任一项所述的装置,其特征在于,所述处理模块,用于根据第一标识对所述校验数据进行加扰,得到加扰后的校验数据,具体为:
    所述处理模块,具体用于根据所述第一标识生成加扰序列,所述加扰序列的长度大于所述第一标识的序列长度,利用所述加扰序列对所述校验数据进行加扰,得到加扰后的校验数据。
  20. 一种数据传输装置,适用于第二设备,其特征在于,包括:收发模块和处理模块;
    所述收发模块,用于接收来自第一设备的传输数据;
    所述处理模块,用于:根据第二标识对所述传输数据进行解扰,得到解扰后的传输数据,对所述解扰后的传输数据进行信道译码,得到译码后的数据,对所述译码后的数据进行循环冗余校验CRC,得到校验数据,根据所述校验数据判断所述译码后的数据是否正确,并确定所述第一设备的第一标识,其中,所述第一标识和所述第二标识的组合用于标识所述第一设备。
  21. 一种数据传输装置,包括处理器、存储器及存储在所述存储器上并可在处理器上运行的计算机程序,其特征在于,所述处理器执行所述程序时实现如上述权利要求1至9任一项所述的方法或者上述权利要求10所述的方法。
  22. 一种存储介质,其特征在于,所述存储介质中存储有指令,当其在计算机上运行时,使得计算机执行如权利要求1至9任一项所述的方法或者上述权利要求10所述的方法。
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