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CN110536488B - Method and device for transmitting and receiving data during RRC reconfiguration - Google Patents

Method and device for transmitting and receiving data during RRC reconfiguration Download PDF

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Publication number
CN110536488B
CN110536488B CN201810510754.XA CN201810510754A CN110536488B CN 110536488 B CN110536488 B CN 110536488B CN 201810510754 A CN201810510754 A CN 201810510754A CN 110536488 B CN110536488 B CN 110536488B
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rrc reconfiguration
carried
configuration parameter
signaling
transmission
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CN110536488A (en
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罗俊
杜颖钢
毕晓艳
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

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

Abstract

The application provides a sending method during RRC reconfiguration, which can effectively solve the problem of high-level configuration parameter ambiguity during the reconfiguration, and specifically comprises the following steps: in the reconfiguration fuzzy period, if the network equipment receives the ACK, the last transmitted parameter is used, or after receiving the ACK transmitted based on the parameter in the RRC reconfiguration signaling, the network equipment transfers the ACK to the transmission based on the parameter in the RRC reconfiguration signaling, and under other conditions, the network equipment transfers the parameter different from the last transmission after receiving the NACK.

Description

Method and device for transmitting and receiving data during RRC reconfiguration
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting and receiving data during Radio Resource Control (RRC) reconfiguration.
Background
In wireless communication systems, in order to randomize interference, a method of scrambling transmitted data is often used, and a specific scrambling sequence is generally generated by a scrambling sequence generator, which can be initialized by the following formula in downlink transmission (3GPP ts 38.211v15.0.0)rd Generation Partner Project Technical Specification 38.211)：
cinit＝nRNTI·215+q·214+nID
Wherein c isinitIs a scrambling sequence initialization factor, nRNTIIs a Radio Network Temporary Identity (RNTI) of the terminal equipment, q belongs to {0,1}, and represents whether a single code word or a multiple code word is adopted, q is 0 when the single code word is adopted, q is 1 when the multiple code word is adopted, n is n when the multiple code word is adoptedIDIs a configurable parameter, nIDE {0, 1.,. 1023}, the specific value may be carried by a higher layer signaling, for example, by a parameter Data-scrambling-Identity in an RRC signaling (hereinafter, the higher layer signaling is described as an RRC signaling).
Similarly, in uplink transmission, the generator may be initialized by the following formula (3GPP ts38.211v15.0.0)rd Generation Partner Project Technical Specification 38.211)：
cinit＝nRNTI·215+nID
Wherein c isinitIs a scrambling sequence initialization factor, nRNTIIs RNTI of terminal equipment, nIDIs a configurable parameter, associated with the terminal device, nIDE {0, 1., 1023}, the value of which can be carried by the Data-scrambling-Identity of the higher layer signaling parameter.
In both Long Term Evolution (LTE) systems and 5 th generation mobile communication technologies (also referred to as 5G), once RRC reconfiguration occurs, i.e. when certain parameters in RRC signaling change, such as nIDWhen adjustments are made as needed, the network device cannot know when the terminal device will know the new n due to the delay in transmission and information parsingIDSo there will be a period of nIDThe ambiguity period may also be referred to as an RRC reconfiguration ambiguity period, where the duration of the ambiguity period is located after the network device issues the RRC reconfiguration message and before the terminal device receives an RRC reconfiguration complete confirmation message (e.g., rrcreconfigcomplete). How to effectively and reliably complete the data transmission task in the fuzzy period becomes a problem to be solved.
Disclosure of Invention
The application provides a method for improving scheduling flexibility by using ACK/NACK signals in an ambiguous period of RRC reconfiguration.
In a first aspect, the present application provides a method for sending downlink data, where the method includes:
after sending a Radio Resource Control (RRC) reconfiguration signaling, the network equipment receives a feedback signal of last downlink transmission from the terminal equipment and performs downlink transmission;
when the feedback signal indicates that the reception is correct, the network device adopts a first high-layer configuration parameter adopted by the last transmission in the current downlink transmission, wherein if the first high-layer configuration parameter adopted by the last transmission is carried in the RRC reconfiguration signaling, the high-layer configuration parameter carried in the RRC reconfiguration signaling is adopted by the current transmission and the subsequent transmission; or,
when the feedback signal indicates that the reception is incorrect and no feedback signal from the terminal device for downlink transmission by using the first high-level configuration parameter carried in the RRC reconfiguration signaling indicates that the reception is correct before, the network device performs the downlink transmission by using a second high-level configuration parameter, where the first high-level configuration parameter is different from the second high-level configuration parameter;
wherein, the first high-level configuration parameter is carried in the RRC reconfiguration signaling, and the second high-level configuration parameter is carried in the RRC signaling before the RRC reconfiguration signaling; or, the second high-level configuration parameter is carried in the RRC reconfiguration signaling, and the first high-level configuration parameter is carried in the RRC signaling before the RRC reconfiguration signaling.
In one possible design, the RRC signaling preceding the RRC reconfiguration signaling is the most recent RRC signaling.
In one possible design, the first higher-layer configuration parameter is a first configurable parameter, and the second higher-layer configuration parameter is a second configurable parameter.
In one possible design, the first higher-layer configuration parameter is a first configurable parameter nIDThe second high-level configuration parameter is a second configurable parameter nIDThe first n isIDE {0, 1.., 1023}, said second nID∈{0,1,...,1023}。
In one possible design, the first configurable parameter nIDCarried by the parameter Data-marking-Identity in the RRC reconfiguration signaling or the RRC signaling; and/or the presence of a gas in the gas,
a second configurable parameter nIDAnd carrying the Data-marking-Identity through the RRC reconfiguration signaling or the parameter in the RRC signaling.
In one possible design, when the feedback signal indicates that the reception is correct, the downlink transmission uses a first higher layer configuration parameter used in a previous transmission, where, if the first higher layer configuration parameter used in the previous transmission is carried in the RRC reconfiguration signaling, the downlink transmission and the subsequent transmission both use the higher layer configuration parameter carried in the RRC reconfiguration signaling, and the method includes:
when the feedback signal indicates correct reception, the current downlink transmission is based on the first n of the last transmissionIDGenerating a first scrambling sequence and scrambling downstream data with said first scrambling sequence, wherein if said first n isIDIs new nIDThen the subsequent transmissions are all based on the new nIDGenerating a scrambling sequence, said new nIDFor n carried in the RRC reconfiguration signalingID。
In a possible design, when the feedback signal indicates that the reception is incorrect and there is no previous feedback signal from the terminal device for downlink transmission using the first higher layer configuration parameter carried in the RRC reconfiguration signaling indicating that the reception is correct, the network device performs the downlink transmission using the second higher layer configuration parameter, where the first higher layer configuration parameter is different from the second higher layer configuration parameter, and the method includes:
when the feedback signal indicates incorrect reception and no previous attempt from the terminal device to adopt the new nIDThe feedback signal of the downlink transmission indicates correct reception, and the network equipment is based on the second nIDGenerating a second scrambling sequence and scrambling downlink data with the second scrambling sequence; the second nIDAnd the first nIDDifferent;
wherein said new nIDFor n carried in the RRC reconfiguration signalingID。
In one possible design, the first higher-layer configuration parameter is a first configurable parameter
Figure BDA0001672474060000021
The second high-level configuration parameter is a second configurable parameter
Figure BDA0001672474060000022
The first is
Figure BDA0001672474060000023
The second
Figure BDA0001672474060000031
In one possible design, the first higher-layer configuration parameter is a first configurable parameter
Figure BDA0001672474060000032
A first configurable parameter
Figure BDA0001672474060000033
Carrying through a parameter DL-DMRS-screening-IDy in the RRC reconfiguration signaling or the RRC signaling; and/or the presence of a gas in the gas,
the second high-level configuration parameter is a second configurable parameter
Figure BDA0001672474060000034
Second configurable parameter
Figure BDA0001672474060000035
And carrying the parameters DL-DMRS-Scambling-ID in the RRC reconfiguration signaling or the RRC signaling.
In one possible design, when the feedback signal indicates that the reception is correct, the downlink transmission uses a first higher layer configuration parameter used in a previous transmission, where, if the first higher layer configuration parameter used in the previous transmission is carried in the RRC reconfiguration signaling, the downlink transmission and the subsequent transmission both use the higher layer configuration parameter carried in the RRC reconfiguration signaling, and the method includes:
when the feedback signal indicates correct reception, the current downlink transmission is based on the first transmission of the last transmission
Figure BDA0001672474060000036
Generating a first demodulation reference signal (DMRS) sequence and scrambling downlink data with the first scrambling sequence, if the first one
Figure BDA0001672474060000037
Is new
Figure BDA0001672474060000038
Then the subsequent transmissions are all based on the new
Figure BDA0001672474060000039
Generating DMRS sequences, the new
Figure BDA00016724740600000310
For being carried in the RRC reconfiguration signaling
Figure BDA00016724740600000311
In a possible design, when the feedback signal indicates that the reception is incorrect and there is no previous feedback signal from the terminal device for downlink transmission using the first higher layer configuration parameter carried in the RRC reconfiguration signaling indicating that the reception is correct, the network device performs the downlink transmission using the second higher layer configuration parameter, where the first higher layer configuration parameter is different from the second higher layer configuration parameter, and the method includes:
when the feedback signal indicates incorrect reception and no previous attempt from the terminal device to adopt the new signal
Figure BDA00016724740600000312
The feedback signal of the downlink transmission indicates correct reception, and the network equipment is based on the second
Figure BDA00016724740600000313
Generating a second DMRS sequence; the second
Figure BDA00016724740600000314
And the first
Figure BDA00016724740600000315
Different;
wherein, the new
Figure BDA00016724740600000316
For being carried in the RRC reconfiguration signaling
Figure BDA00016724740600000317
In one possible design, the subsequent transmission uses a DCI format supporting higher spectral efficiency at least once.
In one possible design, the subsequent transmission uses the DCI format 1_1 at least once.
In one possible design, the downlink transmission uses a conservative downlink control information DCI format.
In one possible design, the downlink transmission uses a downlink control information DCI format 1_ 0.
In a possible design, after receiving an RRC reconfiguration complete acknowledgement message signaling sent by the terminal device, the network device performs downlink transmission based on a high-level configuration parameter carried in the RRC reconfiguration signaling.
In the embodiment of the present application, the network device only needs two different sets of parameters to perform downlink transmission, and can also adopt the DCI format 1_1 with higher spectral efficiency, which is simple to implement, improves the scheduling flexibility, and increases the spectrum utilization efficiency.
In a second aspect, the present application provides a method for transmitting uplink data,
the terminal device receives Radio Resource Control (RRC) reconfiguration signalling transmitted by the network device,
before solving the high-level configuration parameters carried in the RRC reconfiguration signaling, the terminal equipment carries out uplink transmission based on the high-level configuration parameters carried in the RRC signaling before the RRC reconfiguration signaling;
after solving the high-level configuration parameters carried in the RRC reconfiguration signaling, the terminal equipment performs uplink transmission based on the high-level configuration parameters carried in the solved RRC reconfiguration signaling.
In one possible design, the RRC signaling preceding the RRC reconfiguration signaling is the most recent RRC signaling.
In a possible design, the uplink transmission is before the terminal device sends an RRC reconfiguration complete acknowledgement message.
In one possible design, the higher layer configuration parameter is a configurable parameter.
In one possible design, the higher-layer configuration parameter is a configurable parameter nID，nID∈{0,1,...,1023}。
In one possible design, the nIDThe specific value of (a) is carried by a parameter Data-marking-Identity in the RRC reconfiguration signaling.
In one possible design, the terminal device solves the new nIDFront, based on old nIDFor generating a first scrambling sequence and scrambling uplink data with the first scrambling sequence, the terminal device solving the new nIDAfter, based on new nIDFor generating a second scrambling sequence and scrambling uplink data with the second scrambling sequence;
wherein said new nIDFor n carried in the RRC reconfiguration signalingIDSaid old nIDN carried by RRC signaling before the RRC reconfiguration signalingID。
In one possible design, the higher layer configuration parameter is a configurable parameter
Figure BDA0001672474060000041
The above-mentioned
Figure BDA0001672474060000042
In one possible design, the
Figure BDA0001672474060000043
The specific value of (a) is carried by a high-level signaling parameter UL-DMRS-Scambringing-ID.
In one possible design, the terminal device is solving for the new
Figure BDA0001672474060000044
Front, based on old
Figure BDA0001672474060000045
For generating demodulation reference signal (DMRS) sequences, the terminal device being in the process of solving the new sequences
Figure BDA0001672474060000046
After that, based on new
Figure BDA0001672474060000047
For generating a DMRS sequence;
wherein, the new
Figure BDA0001672474060000048
For being carried in the RRC reconfiguration signaling
Figure BDA0001672474060000049
The old
Figure BDA00016724740600000410
Carried by RRC signaling before the RRC reconfiguration signaling
Figure BDA00016724740600000411
In one possible design, the terminal device further sends an RRC reconfiguration complete acknowledgement message signaling.
In a possible design, after the terminal device sends the RRC reconfiguration complete acknowledgement message signaling, uplink transmission is performed based on the high-level configuration parameters carried in the solved RRC reconfiguration signaling.
In a possible design, after solving the high layer configuration parameters carried in the RRC reconfiguration signaling, the terminal device sends ACK or NACK to downlink transmission based on the high layer configuration parameters carried in the RRC reconfiguration signaling.
In a third aspect, the present application provides a downlink data transmitting apparatus, which includes a transceiver unit and a processing unit,
the receiving and sending unit is used for receiving a feedback signal of the last downlink transmission from the terminal equipment after sending a Radio Resource Control (RRC) reconfiguration signaling, and performing downlink transmission;
the processing unit is used for:
when the feedback signal indicates correct reception, the processing unit uses a first high-level configuration parameter used in a previous transmission in a current downlink transmission, wherein if the first high-level configuration parameter used in the previous transmission is carried in the RRC reconfiguration signaling, the current transmission and a subsequent transmission both use the high-level configuration parameter carried in the RRC reconfiguration signaling; or,
when the feedback signal indicates that the reception is incorrect and no feedback signal from the terminal device for downlink transmission by using the first higher-layer configuration parameter carried in the RRC reconfiguration signaling indicates that the reception is correct before, the processing unit directs the transceiver unit to perform downlink transmission by using a second higher-layer configuration parameter, where the first higher-layer configuration parameter is different from the second higher-layer configuration parameter;
wherein, the first high-level configuration parameter is carried in the RRC reconfiguration signaling, and the second high-level configuration parameter is carried in the RRC signaling before the RRC reconfiguration signaling; or, the second high-level configuration parameter is carried in the RRC reconfiguration signaling, and the first high-level configuration parameter is carried in the RRC signaling before the RRC reconfiguration signaling.
In one possible design, the first higher-layer configuration parameter is a first configurable parameter nIDThe second high-level configuration parameter is a second configurable parameter nIDSaid first isn IDE {0, 1.., 1023}, said second nID∈{0,1,...,1023}。
In one possible design, the first configurable parameter nIDCarried by the parameter Data-marking-Identity in the RRC reconfiguration signaling or the RRC signaling; and/or the presence of a gas in the gas,
a second configurable parameter nIDBy the RRC reconfiguration signaling or in RRC signalingThe Data-scaling-Identity parameter is carried.
In one possible design, when the feedback signal indicates that the reception is correct, the downlink transmission uses a first higher layer configuration parameter used in a previous transmission, where, if the first higher layer configuration parameter used in the previous transmission is carried in the RRC reconfiguration signaling, the downlink transmission and the subsequent transmission both use the higher layer configuration parameter carried in the RRC reconfiguration signaling, and the method includes:
when the feedback signal indicates correct reception, the current downlink transmission is based on the first n of the last transmissionIDGenerating a first scrambling sequence and scrambling downstream data with said first scrambling sequence, wherein if said first n isIDIs new nIDThen the subsequent transmissions are all based on the new nIDGenerating a scrambling sequence, said new nIDFor n carried in the RRC reconfiguration signalingID。
In a possible design, when the feedback signal indicates that the reception is not correct and there is no previous feedback signal from the terminal device for downlink transmission using the first higher layer configuration parameter carried in the RRC reconfiguration signaling that indicates that the reception is correct, the processing unit directs the transceiver unit to perform downlink transmission using the second higher layer configuration parameter, where the first higher layer configuration parameter is different from the second higher layer configuration parameter, and the method includes:
when the feedback signal indicates incorrect reception and no previous attempt from the terminal device to adopt the new nIDThe feedback signal of the downlink transmission indicates correct reception, and the network equipment is based on the second nIDGenerating a second scrambling sequence and scrambling downlink data with the second scrambling sequence; the second nIDAnd the first nIDDifferent;
wherein said new nIDFor n carried in the RRC reconfiguration signalingID。
In one possible design, the first higher-layer configuration parameter is a first configurable parameter
Figure BDA0001672474060000051
The second high-level configuration parameter is a second configurable parameter
Figure BDA0001672474060000052
The first is
Figure BDA0001672474060000053
The second
Figure BDA0001672474060000054
In one possible design, the first higher-layer configuration parameter is a first configurable parameter
Figure BDA0001672474060000055
A first configurable parameter
Figure BDA0001672474060000056
Carrying through a parameter DL-DMRS-screening-IDy in the RRC reconfiguration signaling or the RRC signaling; and/or the presence of a gas in the gas,
the second high-level configuration parameter is a second configurable parameter
Figure BDA0001672474060000057
Second configurable parameter
Figure BDA0001672474060000058
And carrying the parameters DL-DMRS-Scambling-ID in the RRC reconfiguration signaling or the RRC signaling.
In one possible design, when the feedback signal indicates that the reception is correct, the downlink transmission uses a first higher layer configuration parameter used in a previous transmission, where, if the first higher layer configuration parameter used in the previous transmission is carried in the RRC reconfiguration signaling, the downlink transmission and the subsequent transmission both use the higher layer configuration parameter carried in the RRC reconfiguration signaling, and the method includes:
when the feedback signal indicates correct reception, the current downlink transmission is based on the first transmission of the last transmission
Figure BDA0001672474060000059
Generating a first demodulation reference signal (DMRS) sequence and scrambling downlink data with the first scrambling sequence, if the first one
Figure BDA00016724740600000510
Is new
Figure BDA00016724740600000511
Then the subsequent transmissions are all based on the new
Figure BDA00016724740600000512
Generating DMRS sequences, the new
Figure BDA00016724740600000513
For being carried in the RRC reconfiguration signaling
Figure BDA00016724740600000514
In a possible design, when the feedback signal indicates that the reception is not correct and there is no previous feedback signal from the terminal device for downlink transmission using the first higher layer configuration parameter carried in the RRC reconfiguration signaling that indicates that the reception is correct, the processing unit uses the second higher layer configuration parameter, where the first higher layer configuration parameter is different from the second higher layer configuration parameter, and the method includes:
when the feedback signal indicates incorrect reception and no previous attempt from the terminal device to adopt the new signal
Figure BDA0001672474060000061
The feedback signal of the downlink transmission indicates correct reception, and the network equipment is based on the second
Figure BDA0001672474060000062
Generating a second DMRS sequence to guide the transceiver unit to perform downlink transmission; the second
Figure BDA0001672474060000063
And the first
Figure BDA0001672474060000064
Different;
wherein, the new
Figure BDA0001672474060000065
For being carried in the RRC reconfiguration signaling
Figure BDA0001672474060000066
In one possible design, the subsequent transmission uses a DCI format supporting higher spectral efficiency at least once.
In one possible design, the subsequent transmission uses the DCI format 1_1 at least once.
In one possible design, the downlink transmission uses a conservative downlink control information DCI format.
In one possible design, the downlink transmission uses a downlink control information DCI format 1_ 0.
In a possible design, after receiving an RRC reconfiguration complete acknowledgement message signaling sent by the terminal device, the network device performs downlink transmission based on a high-level configuration parameter carried in the RRC reconfiguration signaling.
In a fourth aspect, the present application provides an uplink data transmitting apparatus, including a transceiver unit and a processing unit,
the transceiver unit is configured to receive Radio Resource Control (RRC) reconfiguration signaling transmitted by a network device,
the processing unit is configured to:
before solving the high-level configuration parameters carried in the RRC reconfiguration signaling, directing the transceiver unit to perform uplink transmission based on the high-level configuration parameters carried in the RRC signaling before the RRC reconfiguration signaling;
after the high-level configuration parameters carried in the RRC reconfiguration signaling are solved, the transceiver unit is guided to carry out uplink transmission based on the high-level configuration parameters carried in the solved RRC reconfiguration signaling.
In one possible design, the higher-layer configuration parameter is a configurable parameter nID，nID∈{0,1,...,1023}。
In one possible design, the nIDThe specific value of (a) is carried by a parameter Data-marking-Identity in the RRC reconfiguration signaling.
In one possible design, the processing unit solves the new nIDFront, based on old nIDFor generating a first scrambling sequence and scrambling uplink data with the first scrambling sequence, the terminal device solving the new nIDAfter, based on new nIDFor generating a second scrambling sequence and scrambling uplink data with the second scrambling sequence;
wherein said new nIDFor n carried in the RRC reconfiguration signalingIDSaid old nIDN carried by RRC signaling before the RRC reconfiguration signalingID。
In one possible design, the higher layer configuration parameter is a configurable parameter
Figure BDA0001672474060000067
The above-mentioned
Figure BDA0001672474060000068
In one possible design, the
Figure BDA0001672474060000069
The specific value of (a) is carried by a high-level signaling parameter UL-DMRS-Scambringing-ID.
In one possible design, the processing unit is solving for the new
Figure BDA00016724740600000610
Front, based on old
Figure BDA00016724740600000611
For generating demodulation reference signal (DMRS) sequences, the processing unit being arranged to solve the new DMRS sequences
Figure BDA00016724740600000612
After that, based on new
Figure BDA00016724740600000613
For generating a DMRS sequence;
wherein, the new
Figure BDA00016724740600000614
For being carried in the RRC reconfiguration signaling
Figure BDA00016724740600000615
The old
Figure BDA00016724740600000616
Carried by RRC signaling before the RRC reconfiguration signaling
Figure BDA00016724740600000617
In one possible design, the transceiver unit further sends an RRC reconfiguration complete acknowledgement message signaling.
In a possible design, after the transceiver unit sends the RRC reconfiguration complete acknowledgement message signaling, the processing unit directs the transceiver unit to perform uplink transmission based on the high-level configuration parameters carried in the solved RRC reconfiguration signaling.
In one possible design, after solving the higher layer configuration parameter carried in the RRC reconfiguration signaling, the processing unit directs the transceiver unit to send ACK or NACK for downlink transmission based on the solved higher layer configuration parameter carried in the RRC reconfiguration signaling.
In a fifth aspect, the present application provides a computer-readable storage medium having stored thereon computer instructions, which, when executed on a computer, cause the computer to perform the method of the first aspect or any possible implementation manner of the first aspect.
In a sixth aspect, the present application provides a computer-readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method of the second aspect or any possible implementation manner of the second aspect.
In a seventh aspect, the present application provides a communication device, including a memory and a processor, where the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device executes the method in the first aspect and any one of the possible implementation manners thereof.
In one possible design, the communication device is a network device.
In an eighth aspect, the present application provides a communication device, which includes a memory and a processor, where the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device executes the method in the second aspect and any one of the possible implementation manners thereof.
In one possible design, the communication device is a terminal device.
In a ninth aspect, the present application provides a computer program product comprising: computer program code for causing a computer to perform the method of the first aspect and any one of its possible implementations described above, when the computer program code runs on a computer.
In a tenth aspect, the present application provides a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of the second aspect and any one of its possible implementations described above.
In an eleventh aspect, the present application provides an apparatus for performing the method of the first aspect and any one of its possible implementations.
In a twelfth aspect, the present application provides an apparatus, characterized in that the apparatus is configured to perform the method of the second aspect and any one of the possible implementations thereof.
Drawings
Fig. 1 is a wireless communication system 100 suitable for use in embodiments of the present application.
Fig. 2 is a schematic diagram of a downlink data transmission flow according to an embodiment of the present application.
Fig. 3 is a schematic diagram of downlink data reception according to an embodiment of the present application.
FIG. 4 is a schematic diagram of downlink data transmission and reception according to the present application
Fig. 5 is a schematic block diagram of an apparatus 300 of an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a terminal device 400 according to an embodiment of the present application.
Fig. 7 is a schematic block diagram of an apparatus 500 of an embodiment of the present application.
Fig. 8 is a schematic structural diagram of a network device 600 according to an embodiment of the present application.
Detailed Description
The technical solution in the present application will be described below with reference to the accompanying drawings.
Fig. 1 is a wireless communication system 100 suitable for use in embodiments of the present application. At least one network device 101 may be included in the wireless communication system that communicates with one or more terminal devices (e.g., terminal device 102 and terminal device 103 shown in fig. 1). The network device may be a network device, a device in which the network device is integrated with a network device controller, or another device having a similar communication function.
The terminal device is a device with a communication function, and may include a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem, and the like. The terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The terminal devices in different networks may be called different names, for example: subscriber equipment, mobile stations, subscriber units, stations, cellular telephones, personal digital assistants, wireless modems, wireless communication devices, handheld devices, laptops, cordless telephones, wireless local loop stations, and the like. For convenience of description, the terminal device is simply referred to in the application.
A Base Station (BS), also called a base station device, is a device deployed in a radio access network to provide a wireless communication function. The calling of the base station may be different in different wireless access systems, for example, the base station in a Universal Mobile Telecommunications System (UMTS) network is called node B (NodeB), the base station in an LTE network is called evolved node B (eNB or eNodeB), the base station in a New Radio (NR) network is called a transmission point (TRP) or a next generation node B (gNB), the base station in a terminal-to-terminal (D2D) or machine-to-machine (M2M) communication is called a device for the function of the base station, or other calling methods may be adopted in other networks with multiple converged technologies, or base stations in other networks with multiple evolved technologies. The present application is described generally in terms of network devices.
The wireless communication system mentioned in the embodiments of the present application includes but is not limited to: three major application scenarios of the next generation 5G Mobile Communication system, namely, enhanced Mobile bandwidth (eMBB), high reliability Low Latency Communication (URLLC), and enhanced mass Machine Type Communication (eMTC), or a new Communication system emerging in the future.
In the LTE system, once RRC reconfiguration occurs, the network device has an old n for the same terminal device in the ambiguity periodID(i.e., n carried by RRC signaling preceding RRC reconfiguration signalingID) And has new nID(; i.e. n carried in RRC reconfiguration signalling)ID) Then, at present, it is a common practice that network devices are alternately based on old nIDAnd new nIDFor scrambling downstream data, e.g. old n for odd-numbered transmissionsIDNew n for even number of transmissionsIDOr vice versa. This is a simple way, but there is a waste of resources since there must be one transmission that is an invalid transmission.
Yet another solution is to replace n with a cell identification (CellID) during the ambiguity periodIDFor initialising the scrambling sequence generator, i.e. nIDAlthough this method avoids ambiguity at the transmitting and receiving ends, it has at least two disadvantages: 1) three different n are required to be converted in the blurring period and before and after the blurring periodIDThe generation of the scrambling sequence becomes more complicated; 2) before the ambiguity period ends, CellID scrambling must be used, in this case, only a more conservative Downlink Control Information (DCI) format, for example, format 1_0, can be used, which represents a more conservative transmission mode, and can support fewer data streams, and generally used under the condition that a connection state needs to be ensured but the requirement on transmission efficiency is not high, so that the scheduling flexibility and the spectrum use efficiency are also reduced. The definition of a specific DCI format can be found in 3GPP ts38.212v15.0.0(3 GPP ts38.212v15.0.0rd Generation Partner Project Technical Specification 38.212)。
The application provides a method which can realize flexible scheduling as soon as possible and improve transmission efficiency.
Fig. 2 is an exemplary method for data transmission in the ambiguity period, which takes Physical Downlink Shared Channel (PDSCH) transmission as an example without loss of generality, specifically as follows, where an initial value of i is 0, and in addition, n isIDIs also thatAs an example of the higher layer configuration parameters, other higher layer configuration parameters with a period of ambiguity may also be implemented as follows:
step S210: network device in ith transmission with old nIDN carried by RRC signalling preceding RRC reconfiguration signalling (e.g. RRCreconfig)ID-generating a scrambling sequence, wherein, without loss of generality, the RRC signaling preceding the RRC reconfiguration signaling is the last RRC signaling;
step S220: the network equipment receives a data receiving feedback signal from the terminal equipment:
if the data reception feedback signal is an ACK indicating correct reception, the process returns to step S210, and the transmission is still performed with the old nIDGenerating a scrambling sequence;
if the data reception feedback signal indicates reception of an incorrect NACK, the method proceeds to step S230 at the time of the next transmission, and switches nID；
Step S230: network device with new n in current transmissionID(i.e. n carried by RRC reconfiguration signalling)ID) Generating a scrambling sequence;
step S240: the network device receives a data reception feedback signal from the terminal device,
if it is indicated that the NACK is received incorrectly and the ACK signal for the downlink transmission based on the new nID has not been received before, the process proceeds to step S210, and the next transmission is performed with the old nIDGenerating a scrambling sequence;
if the ACK is received correctly, the terminal equipment is indicated to detect new nIDThen step S250 may be entered and the subsequent transmissions may be based directly on the new nIDGenerating scrambling sequences, eliminating the need for old nIDIn other words, it corresponds to nIDThe reconfiguration is successful, and the new n can be applied without waiting for signaling (e.g., RRCreconfigCompleted) sent by the terminal device indicating the success of the reconfigurationIDIt is used.
Step S250: starting from the current transmission, the network device bases on the new nIDGenerating scrambling sequences, aspects of DCI format, other thanBesides the more conservative format 1_0 conventionally adopted in the ambiguity period, other formats such as 1_1 may also be adopted, in other words, the scheduling flexibility is improved, and the spectrum use efficiency is increased.
In addition, after the network device receives the rrcrednfigcompleted signaling sent by the terminal device, it must switch to new nIDA scrambling sequence is generated to scramble the downlink data and transmit.
The steps shown in fig. 2 are the behavior of the network device, and the behavior of the terminal device can be exemplarily shown in fig. 3, and it can be seen that the dashed arrows in the figure indicate that the terminal device successfully solves the new n from the rrcredonfig signalingIDThe reason is that the decoding delay of the signaling information is delayed in addition to the decoding and demodulation processing delay of the physical layer after the RRCreconfig signaling is received, so that the new n is really solvedIDThe time of the rrcredonfig signaling is necessarily after the rrcredonfig signaling is received, and since the processing capacity of different terminal devices is different, the delay is different for different terminal devices. Before this moment the terminal device uses the old nIDGenerating a descrambling sequence (the descrambling sequence being identical to the scrambling sequence, except for the purpose of distinguishing between the transmitting end, which is indicated by the scrambling sequence, and the receiving end, which is indicated by the descrambling sequence), followed by a new nIDThe descrambling sequence is generated or the terminal device may change to a new n at any time between that time and the sending of the rrcrednfigugcompleded signallingIDGenerating descrambling sequences, but it should be noted that once converted to a new nIDThen, the old n can no longer be usedIDA descrambling sequence is generated. Corresponding to the transmitting end, in the old nIDAt the same time, the DCI format can only have 1_0, and new n is appliedIDThereafter, once the detection is correct, other DCI formats that can support more data streams, such as format 1_1 in fig. 3, may be used.
Also, as can be seen from fig. 3, if the UE solves for a new nIDAfter that, the rrcreconfigcomplete signaling can be sent immediately, so the beneficial effect of the scheme is relatively limited, but considering that the rrcreconfigcomplete signaling is a high-level signaling, no matter the signaling is formed or the network is setThe instant receiving can not be carried out in the standby receiving detection, so that a time difference is inevitably generated, and the time difference is only caused by different processing capacities of different terminal equipment or different information required to be included by the RRCreconfigcompleteIDThereby more flexible scheduling is possible.
It can be seen that the method in the application can be adopted to switch to the new n as soon as possibleIDTherefore, a plurality of DCI formats can be used, the scheduling flexibility is obtained, and only two n types are involved in the whole reconfiguration processIDAnd is more concise. Even when the channel conditions are poor, there is a possibility that new n may be presentIDAnd old nIDThe method and the device switch back and forth, but the method only returns to the processing mode in the LTE as described above, and therefore the method and the device still have strong practicability.
For Physical Uplink Shared Channel (PUSCH) transmission, the processing is similar to downlink PDSCH transmission. For the terminal device, detecting new nIDBefore, use old nIDScrambling the uplink data after generating the scrambling sequence and then transmitting the scrambled uplink data, and detecting new nIDThen, use new nIDAnd generating a scrambling sequence to scramble the uplink data and then transmitting the uplink data. For network devices, the network device is old or not at the beginning of the ambiguity periodIDDetecting, if it is correct, always using old nIDDetecting, if not correct, considering that the processing capacity of the network equipment is stronger, the new n can be reusedIDDetecting once, when the network device takes new nIDAfter correct detection, abandon the old nIDUsing only new nIDAnd start to press new nIDAnd (6) scheduling.
In fact, other similar embodiments are possible, such as: 1) based on old n in the fuzzy periodIDGenerating a scrambling sequence, of course, only DCI format 1_0 can be used in this way; 2) based on new n in fuzzy periodIDThe scrambling sequence is generated but in this way results in the detection of a new n at the terminal deviceIDPrevious transmissions are wasted; 3) one extreme way is to avoid confusion, not scheduling during the period of ambiguityThe reconfigured terminal device, of course, wastes more resources in this way.
In the example shown in fig. 2, when i is 0, the value is old nIDStarting with, but in fact with new nIDStarting, especially when delaying scheduling, i.e. when the time when i is 0 is some time after rrcredonfig signaling, the network device may directly start with a new nIDTransmission is attempted, i.e. performed starting from step S230 of fig. 2, but the behavior of the terminal is not changed.
FIG. 4 shows a specific example, assuming old n ID99, new n ID100, the terminal device detects a new n during the period of ambiguityIDIs T0, times T1, T2, and T3 are all before T0, and times T4, T5, and T6 are all before T0, an exemplary process flow is as follows:
time T1: network device with nIDGenerating a scrambling sequence to scramble and transmit downlink data 99, wherein the DCI format is 1_0, and the terminal equipment uses nIDIf the detection is correct, an ACK is fed back;
time T2: the network device still uses nIDGenerating a scrambling sequence to scramble and transmit downlink data, wherein the DCI format is 1_0, and the terminal equipment nIDNo correct detection, NACK, is fed back 99;
time T3: network device with nIDGenerating a scrambling sequence to scramble and transmit downlink data, wherein the DCI format is 1_0, and the terminal equipment nIDNo correct detection, NACK, is fed back 99;
time T4: network device with nIDGenerating a scrambling sequence to scramble and transmit downlink data, wherein the DCI format is 1_0, and the terminal equipment nIDFail to detect correct, NACK is fed back 100;
time T5: network device with nIDGenerating a scrambling sequence to scramble and transmit downlink data, wherein the DCI format is 1_0, and the terminal equipment nIDDetecting right, and feeding back ACK; then, starting from the next instant, all nIDA scrambling or descrambling sequence is generated at 100.
Time T6: network device with nIDScrambling sequence generation for scrambling downstream data concurrency 100DCI format is 1_1, terminal device nIDACK is fed back for 100 detection correct.
The above adjusts n according to ACK/NACK signal in the embodiment of the applicationIDThe method of generating the scrambling sequence is described in detail. N provided by the embodiment of the applicationIDThe adjusting method can improve the flexibility of data transmission.
The above is a solution for scrambling sequence portions in downlink or uplink data transmission, and in fact, n is also used in generating a channel reference signal (CSI-RS) sequenceIDTherefore, the method can be used in the application, and the method is used as the method, and is not expanded.
In addition, during reconfiguration, the generation scheme of demodulation reference signals (DMRSs) for PDSCH and PUSCH has the same ambiguity problem as the generation scheme of scrambling sequences. The generator of the sequence, e.g. DMRS, is initialized by the following formula (3GPP ts38.211v15.0.0)rd Generation Partner Project Technical Specification 38.211)：
Figure BDA0001672474060000111
Wherein c isinitIs DMRS sequence initialization factor, l is the serial number of OFDM symbol in time slot, nsIs the time slot number within the frame,
Figure BDA0001672474060000112
is a configurable parameter having a value range of
Figure BDA0001672474060000113
Determined by a high-layer signaling parameter UL-DMRS-screening-ID (used for uplink) or DL-DMRS-screening-ID (used for downlink), nSCIDE {0,1 }. It can be seen that, at the time of RRC reconfiguration,
Figure BDA0001672474060000114
also having a period of ambiguitySubject, i.e. new
Figure BDA0001672474060000115
Old and well-known
Figure BDA0001672474060000116
Exist simultaneously, so the processing mode is the same as nIDThe processing modes are completely consistent, and the methods in the embodiments can be completely applied, that is, the new ACK/NACK fed back by the terminal equipment is used for adjustment
Figure BDA0001672474060000117
Old and well-known
Figure BDA0001672474060000118
And will not be described in detail herein.
On the other hand, for other situations requiring RRC reconfiguration, for example, during handover, there is also a problem that new and old Identifiers (IDs) exist simultaneously, that is, there is also an ambiguity period, in this case, the method of the foregoing embodiment of the present application is also applicable, the network device applies the old ID first and tries the new ID after NACK, or applies the new ID first and tries the old ID after NACK, and the process is performed according to the flow shown in fig. 2, and the terminal device may also use the old ID before solving the new ID, and use the new ID after solving the new ID, and the principle is completely consistent. And will not be described in detail.
The following describes a corresponding apparatus according to an embodiment of the method of the present application with reference to fig. 5 to 8.
Fig. 5 is a schematic block diagram of an apparatus 300 of an embodiment of the present application. The apparatus 300 mainly comprises a processing unit 310 and a transceiving unit 320.
The processing unit 310 is configured to obtain higher layer configuration information (e.g. n) carried by the RRC signaling before the RRC reconfiguration signalingIDOr
Figure BDA0001672474060000119
) Or higher layer configuration information (e.g., n) carried by RRC reconfiguration signalingIDOr
Figure BDA00016724740600001110
) For downlink reception or uplink transmission, specifically, it may refer to fig. 3 or the foregoing embodiment to adopt old parameter information (i.e., higher layer configuration information carried in RRC signaling before RRC reconfiguration signaling) or new parameter information (i.e., higher layer configuration information carried in RRC reconfiguration signaling).
The transceiver unit 320 is configured to receive the rrcredonfig signaling and the downlink data from the network device, send the uplink data, send ACK/NACK and rrcredonfigured signaling, and the like.
The apparatus 300 is suitable for both uplink transmission and downlink reception.
Alternatively, the apparatus 300 may be a chip or an integrated circuit.
The units and other operations or functions described above in the apparatus 300 of the embodiment of the present application are respectively for implementing corresponding operations and/or corresponding flows executed by the terminal device in the embodiment of the present application. For brevity, no further description is provided herein.
Fig. 6 is a schematic structural diagram of a terminal device 400 according to an embodiment of the present application. As shown in fig. 6, the terminal device 400 includes: one or more processors 401, one or more memories 402, and one or more transceivers 403. The processor 401 is configured to control the transceiver 403 to transceive signals, the memory 402 is configured to store a computer program, and the processor 401 is configured to call and execute the computer program from the memory 402, so that the terminal device 400 performs the corresponding procedures and/or operations performed by the terminal device in the embodiments of the present application. The memory 402 and the transceiver 403 may be coupled via a bus or an interface, or may be integrated, and will not be described in detail herein.
It should be noted that the apparatus 300 shown in fig. 5 can be implemented by the terminal device 400 shown in fig. 6. For example, the processing unit 310 may be implemented by the processor 401, the transceiving unit 320 may be implemented by the transceiver 403, and the like.
Furthermore, the present application provides a computer-readable storage medium, in which computer instructions are stored, and when the computer instructions are executed on a computer, the computer is caused to execute the corresponding operations and/or procedures executed by the terminal device in the method of the above embodiment.
The present application further provides a computer program product, which includes computer program code, when the computer program code runs on a computer, the computer is caused to execute the corresponding operations and/or procedures executed by the terminal device in the method of the above embodiment.
The present application also provides a chip (or, a chip system) including a memory and a processor, the memory is used for storing a computer program, and the processor is used for calling the computer program from the memory and running the computer program, so that a communication device installed with the chip executes the corresponding operations and/or procedures executed by the terminal device in the method of the above embodiment, and the memory and the transceiver can be coupled through a bus or integrated together.
The communication device referred to herein may be a terminal device.
Fig. 7 is a schematic block diagram of an apparatus 500 of an embodiment of the present application. The apparatus 500 mainly comprises a processing unit 510 and a transceiving unit 520.
The processing unit 510 is configured to configure the higher layer configuration information (e.g. n) carried by the RRC signaling before the RRC reconfiguration signaling according to the RRC signaling before the RRC reconfiguration signalingIDOr
Figure BDA0001672474060000121
) Or higher layer configuration information (e.g., n) carried by RRC reconfiguration signalingIDOr
Figure BDA0001672474060000122
) For downlink transmission or uplink reception, specifically, it may refer to fig. 2 or the foregoing embodiment to adopt old parameter information (i.e., higher layer configuration information carried in RRC signaling before RRC reconfiguration signaling) or new parameter information (i.e., higher layer configuration information carried in RRC reconfiguration signaling).
The transceiver 520 is configured to receive uplink data and/or ACK/NACK, signaling such as rrcredfigcomplete, and the like from the terminal device, and send downlink data and signaling such as rrcredonfig.
The units in the apparatus 500 of the embodiment of the present application and the other operations or functions described above are respectively for implementing the corresponding operations and/or procedures executed by the network device in the embodiment of the present application. For brevity, no further description is provided herein.
Alternatively, the apparatus 500 may be a chip or an integrated circuit.
Fig. 8 is a schematic structural diagram of a network device 600 according to an embodiment of the present application. As shown in fig. 8, the network device 600 includes: one or more processors 601, one or more memories 602, and one or more transceivers 603. The processor 601 is configured to control the transceiver 603 to transmit and receive signals, the memory 602 is configured to store a computer program, and the processor 601 is configured to call and execute the computer program from the memory 602, so that the network device 600 performs the corresponding procedures and/or operations performed by the network device in the embodiments of the present application. The memory 602 and the transceiver 603 may be coupled via a bus or an interface, or may be integrated, and will not be described herein.
It should be noted that the apparatus 500 shown in fig. 7 can be implemented by the terminal device 600 shown in fig. 8. For example, the processing unit 510 may be implemented by the processor 601. The transceiving unit 520 may be implemented by a transceiver 603.
Furthermore, the present application provides a computer-readable storage medium, which stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the corresponding operations and/or procedures executed by the network device in the method of the above embodiment.
The present application further provides a computer program product, which includes computer program code, when the computer program code runs on a computer, the computer is caused to execute the corresponding operations and/or procedures executed by the network device in the method of the above embodiment.
The present application also provides a chip (or, a chip system) including a memory for storing a computer program and a processor for calling the computer program from the memory and executing the computer program, so that a communication device installed with the chip executes the corresponding operations and/or procedures executed by a network device in the method of the above embodiment, and the memory and the transceiver can be coupled through a bus or integrated together.
In the above embodiments, the processor may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, a microprocessor, one or more integrated circuits for controlling the execution of the program according to the present disclosure, and so on. For example, a processor may be comprised of a digital signal processor device, a microprocessor device, an analog to digital converter, a digital to analog converter, and so forth. The processor may distribute the control and signal processing functions of the mobile device between these devices according to their respective functions. Further, the processor may include functionality to operate one or more software programs, which may be stored in the memory. The functions of the processor can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.
The Memory may be a Read-Only Memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions. But is not limited to, Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM) or other optical disk storage, optical disk storage (including Compact Disc, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, wherein "a and/or B" represents a, or, B, or, a and B, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (29)

1. A method for transmitting downlink data, the method comprising:
after sending a Radio Resource Control (RRC) reconfiguration signaling, the network equipment receives a feedback signal of last downlink transmission from the terminal equipment and performs downlink transmission;
when the feedback signal indicates that the reception is correct, the network device adopts a first high-layer configuration parameter adopted by the last transmission in the current downlink transmission, wherein if the first high-layer configuration parameter adopted by the last transmission is carried in the RRC reconfiguration signaling, the high-layer configuration parameter carried in the RRC reconfiguration signaling is adopted by the current transmission and the subsequent transmission; or,
when the feedback signal indicates that the reception is incorrect and no feedback signal from the terminal device for downlink transmission by using the first high-level configuration parameter carried in the RRC reconfiguration signaling indicates that the reception is correct before, the network device performs the downlink transmission by using a second high-level configuration parameter, where the first high-level configuration parameter is different from the second high-level configuration parameter;
the first high-level configuration parameter is carried in the RRC reconfiguration signaling, and the second high-level configuration parameter is carried in the RRC signaling before the RRC reconfiguration signaling.
2. The method of claim 1, wherein the first higher-layer configuration parameter is a first configurable parameter nIDThe second high-level configuration parameter is a second configurable parameter nIDThe first n isIDE {0, 1.., 1023}, said second nID∈{0,1,...,1023}。
3. The method of claim 2, wherein the first configurable parameter n isIDCarried by the parameter Data-marking-Identity in the RRC reconfiguration signaling or the RRC signaling; and/or the presence of a gas in the gas,
a second configurable parameter nIDAnd carrying the Data-marking-Identity through the RRC reconfiguration signaling or the parameter in the RRC signaling.
4. The method of claim 2,
when the feedback signal indicates that the reception is correct, the downlink transmission adopts a first high-layer configuration parameter adopted by the last transmission, wherein if the first high-layer configuration parameter adopted by the last transmission is carried in the RRC reconfiguration signaling, the downlink transmission and the subsequent transmission both adopt the high-layer configuration parameter carried in the RRC reconfiguration signaling includes:
when the feedback signal indicates correct reception, the current downlink transmission is based on the first n of the last transmissionIDGenerating a first scrambling sequence and scrambling downstream data with said first scrambling sequence, wherein if said first n isIDIs new nIDThen the subsequent transmissions are all based on the new nIDGenerating a scrambling sequence, said new nIDFor n carried in the RRC reconfiguration signalingID。
5. The method of claim 3,
when the feedback signal indicates that the reception is correct, the downlink transmission adopts a first high-layer configuration parameter adopted by the last transmission, wherein if the first high-layer configuration parameter adopted by the last transmission is carried in the RRC reconfiguration signaling, the downlink transmission and the subsequent transmission both adopt the high-layer configuration parameter carried in the RRC reconfiguration signaling includes:
when the feedback signal indicates correct reception, the current downlink transmission is based on the first n of the last transmissionIDGenerating a first scrambling sequence and scrambling downstream data with said first scrambling sequence, wherein if said first n isIDIs new nIDThen the subsequent transmissions are all based on the new nIDGenerating a scrambling sequence, said new nIDFor n carried in the RRC reconfiguration signalingID。
6. The method according to any of claims 2-5, wherein said network device performs the downlink transmission using a second higher layer configuration parameter when the feedback signal indicates that the reception is not correct and no previous feedback signal from the terminal device for the downlink transmission using the first higher layer configuration parameter carried in the RRC reconfiguration signaling indicates that the reception is correct, wherein the first higher layer configuration parameter is different from the second higher layer configuration parameter, and comprises:
when the feedback signal indicates incorrect reception and no previous adoption of new n from the terminal equipmentIDThe feedback signal of the downlink transmission indicates correct reception, and the network equipment is based on the second nIDGenerating a second scrambling sequence and scrambling downlink data with the second scrambling sequence; the second nIDAnd the first nIDDifferent;
wherein said new nIDFor n carried in the RRC reconfiguration signalingID。
7. The method of claim 1, wherein the first higher-layer configuration parameter is a first configurable parameter
Figure FDA0003058873370000021
The second high-level configuration parameter is a second configurable parameter
Figure FDA0003058873370000022
The first is
Figure FDA0003058873370000023
The second
Figure FDA0003058873370000024
8. The method of claim 7, wherein the first higher-layer configuration parameter is a first configurable parameter
Figure FDA0003058873370000025
A first configurable parameter
Figure FDA0003058873370000026
Carrying through a parameter DL-DMRS-screening-IDy in the RRC reconfiguration signaling or the RRC signaling; and/or the presence of a gas in the gas,
the second high-level configuration parameter is a second configurable parameter
Figure FDA0003058873370000027
Second configurable parameter
Figure FDA0003058873370000028
And carrying the parameters DL-DMRS-Scambling-ID in the RRC reconfiguration signaling or the RRC signaling.
9. The method of claim 7,
when the feedback signal indicates that the reception is correct, the downlink transmission adopts a first high-layer configuration parameter adopted by the last transmission, wherein if the first high-layer configuration parameter adopted by the last transmission is carried in the RRC reconfiguration signaling, the downlink transmission and the subsequent transmission both adopt the high-layer configuration parameter carried in the RRC reconfiguration signaling includes:
when the feedback signal indicates correct reception, the current downlink transmission is based on the first transmission of the last transmission
Figure FDA0003058873370000029
Generating a first demodulation reference signal (DMRS) sequence and scrambling downlink data with a first scrambling sequence, if the first DMRS sequence is present
Figure FDA00030588733700000210
Is new
Figure FDA00030588733700000211
Then the subsequent transmissions are all based on the new
Figure FDA00030588733700000212
Generating DMRS sequences, the new
Figure FDA00030588733700000213
For being carried in the RRC reconfiguration signaling
Figure FDA00030588733700000214
10. The method of claim 8,
when the feedback signal indicates that the reception is correct, the downlink transmission adopts a first high-layer configuration parameter adopted by the last transmission, wherein if the first high-layer configuration parameter adopted by the last transmission is carried in the RRC reconfiguration signaling, the downlink transmission and the subsequent transmission both adopt the high-layer configuration parameter carried in the RRC reconfiguration signaling includes:
when the feedback signal indicates correct reception, the current downlink transmission is based on the first transmission of the last transmission
Figure FDA00030588733700000215
Generating a first demodulation reference signal (DMRS) sequence and scrambling downlink data with a first scrambling sequence, if the first DMRS sequence is present
Figure FDA00030588733700000216
Is new
Figure FDA00030588733700000217
Then the subsequent transmissions are all based on the new
Figure FDA00030588733700000218
Generating DMRS sequences, the new
Figure FDA00030588733700000219
For being carried in the RRC reconfiguration signaling
Figure FDA00030588733700000220
11. The method according to claim 9 or 10, wherein when the feedback signal indicates incorrect reception and no previous feedback signal from the terminal device for downlink transmission using the first higher layer configuration parameter carried in the RRC reconfiguration signaling indicates correct reception, the network device performs the downlink transmission using the second higher layer configuration parameter, where the first higher layer configuration parameter is different from the second higher layer configuration parameter, including:
when the feedback signal indicates incorrect reception and no previous attempt from the terminal device to adopt the new signal
Figure FDA0003058873370000031
The feedback signal of the downlink transmission indicates correct reception, and the network equipment is based on the second
Figure FDA0003058873370000032
Generating a second DMRS sequence; the second
Figure FDA0003058873370000033
And the first
Figure FDA0003058873370000034
Different;
wherein, the new
Figure FDA0003058873370000035
For being carried in the RRC reconfiguration signaling
Figure FDA0003058873370000036
12. The method according to any of claims 1-5, 7-10, wherein the subsequent transmission is based at least once on a downlink control information, DCI, format 1_ 1.
13. The method according to any of claims 1-5 and 7-10, wherein the current downlink transmission is based on a downlink control information, DCI, format 1_ 0.
14. The method according to any one of claims 1-5, further comprising: and after receiving the RRC reconfiguration complete confirmation message signaling sent by the terminal equipment, the network equipment performs downlink transmission based on the high-level configuration parameters carried in the RRC reconfiguration signaling.
15. A method for transmitting uplink data, the method comprising:
the terminal device receives Radio Resource Control (RRC) reconfiguration signalling transmitted by the network device,
before solving the high-level configuration parameters carried in the RRC reconfiguration signaling, the terminal equipment carries out uplink transmission based on the high-level configuration parameters carried in the RRC signaling before the RRC reconfiguration signaling;
after solving the high-level configuration parameters carried in the RRC reconfiguration signaling, the terminal equipment performs uplink transmission based on the high-level configuration parameters carried in the solved RRC reconfiguration signaling;
the terminal equipment sends a feedback signal for the last downlink transmission to the network equipment;
when the feedback signal indicates that the reception is correct, the network device adopts a first high-layer configuration parameter adopted by the last transmission in the current downlink transmission, wherein if the first high-layer configuration parameter adopted by the last transmission is carried in the RRC reconfiguration signaling, the high-layer configuration parameter carried in the RRC reconfiguration signaling is adopted by the current transmission and the subsequent transmission; or,
when the feedback signal indicates that the reception is incorrect and no feedback signal from the terminal device for downlink transmission by using the first high-level configuration parameter carried in the RRC reconfiguration signaling indicates that the reception is correct before, the network device performs the downlink transmission by using a second high-level configuration parameter, where the first high-level configuration parameter is different from the second high-level configuration parameter;
the first high-level configuration parameter is carried in the RRC reconfiguration signaling, and the second high-level configuration parameter is carried in the RRC signaling before the RRC reconfiguration signaling.
16. The method of claim 15, wherein the higher-layer configuration parameter is a configurable parameter nID，nID∈{0,1,...,1023}。
17. The method of claim 16, wherein n isIDTool (A)And the volume value is carried by a parameter Data-marking-Identity in the RRC reconfiguration signaling.
18. Method according to claim 16 or 17, wherein the terminal device is solving for a new nIDFront, based on old nIDFor generating a first scrambling sequence and scrambling uplink data with the first scrambling sequence, the terminal device solving the new nIDAfter, based on new nIDFor generating a second scrambling sequence and scrambling uplink data with the second scrambling sequence;
wherein said new nIDFor n carried in the RRC reconfiguration signalingIDSaid old nIDN carried by RRC signaling before the RRC reconfiguration signalingID。
19. The method of claim 15, wherein the higher layer configuration parameter is a configurable parameter
Figure FDA0003058873370000041
The above-mentioned
Figure FDA0003058873370000042
20. The method of claim 19, wherein the step of applying the coating comprises applying a coating to the substrate
Figure FDA0003058873370000043
The specific value of (a) is carried by a high-level signaling parameter UL-DMRS-Scambringing-ID.
21. Method according to claim 19 or 20, wherein the terminal device is solving for a new one
Figure FDA0003058873370000044
Front, based on old
Figure FDA0003058873370000045
For generating demodulation reference signal (DMRS) sequences, the terminal device being in the process of solving the new sequences
Figure FDA0003058873370000046
After that, based on new
Figure FDA0003058873370000047
For generating a DMRS sequence;
wherein, the new
Figure FDA0003058873370000048
For being carried in the RRC reconfiguration signaling
Figure FDA0003058873370000049
The old
Figure FDA00030588733700000410
Carried by RRC signaling before the RRC reconfiguration signaling
Figure FDA00030588733700000411
22. The method according to any of claims 15-17, wherein the terminal device further sends RRC reconfiguration complete acknowledge message signalling.
23. The method according to claim 20, wherein after the terminal device sends the RRC reconfiguration complete acknowledgement message signaling, uplink transmission is performed based on the solved higher layer configuration parameters carried in the RRC reconfiguration signaling.
24. The method according to any of claims 15-17, wherein the terminal device, after solving the higher layer configuration parameters carried in the RRC reconfiguration signaling, sends an ACK or NACK to downlink transmission based on the solved higher layer configuration parameters carried in the RRC reconfiguration signaling.
25. A communication device comprising a memory for storing a computer program and a processor for calling and running the computer program from the memory so that the processor performs the method of any one of claims 1 to 14.
26. The device of claim 25, wherein the device is a network device.
27. A communication device comprising a memory for storing a computer program and a processor for calling and running the computer program from the memory so that the processor performs the method of any one of claims 15 to 24.
28. The device of claim 27, wherein the device is a terminal device.
29. A computer readable storage medium having stored therein computer instructions which, when run on a communication device, cause the communication device to perform the method of any of claims 1-14 or any of claims 15-24.
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