WO2018171697A1 - Procédé et appareil de transmission d'informations - Google Patents

Procédé et appareil de transmission d'informations Download PDF

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Publication number
WO2018171697A1
WO2018171697A1 PCT/CN2018/080116 CN2018080116W WO2018171697A1 WO 2018171697 A1 WO2018171697 A1 WO 2018171697A1 CN 2018080116 W CN2018080116 W CN 2018080116W WO 2018171697 A1 WO2018171697 A1 WO 2018171697A1
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Prior art keywords
bit sequence
indication information
information
rate matching
bit
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PCT/CN2018/080116
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English (en)
Chinese (zh)
Inventor
管鹏
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华为技术有限公司
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Priority claimed from CN201710204289.2A external-priority patent/CN108632003B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18771691.5A priority Critical patent/EP3591867B1/fr
Publication of WO2018171697A1 publication Critical patent/WO2018171697A1/fr
Priority to US16/580,884 priority patent/US11088778B2/en

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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

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to an information transmission method and apparatus.
  • a physical layer processing procedure of a physical downlink control channel (PDCCH) of a base station includes: performing channel coding, rate matching, scrambling, and modulation on original data bits by a base station. , cyclic shift, and resource mapping and other operations are sent out.
  • PDCCH physical downlink control channel
  • the present application provides an information transmission method and apparatus, which considers the influence of beam pair rate matching to improve the robustness of the control channel.
  • the present application provides a rate matching method, and an execution body of the method may be a transmitting end.
  • the method may include: performing rate matching on the first bit sequence according to the beam indication information to obtain a second bit sequence; wherein the first bit sequence is a bit sequence obtained by channel coding the original data bits.
  • the beam is considered in the process of performing the rate matching operation, so that the bit sequences obtained by matching the PDCCH rates transmitted on different beams may be different, that is, the versions of the PDCCH transmitted on different beams may be different. In this way, by performing soft combining on the UE side, the purpose of improving SNR and reducing the code rate can be achieved, thereby improving the robustness of the control channel.
  • the execution body of the method may be a network device (for example, a base station). If the second bit sequence is applied to the uplink transmission process, the execution body of the method may be a terminal device (such as a UE).
  • performing rate matching on the first bit sequence according to the beam indication information to obtain the second bit sequence may include: determining an initial bit of the second bit sequence according to the beam indication information. Then, the first bit sequence is rate matched according to the initial bit of the second bit sequence, and the second bit sequence is determined.
  • the optional implementation provides a manner of performing a rate matching operation according to the beam indication information, and the specific implementation is not limited thereto.
  • performing rate matching on the first bit sequence according to the beam indication information to obtain the second bit sequence may include: according to a formula Obtaining a second bit sequence; wherein e k represents the kth element in the second bit sequence, k is an integer, Representing the (j+k 0 ) mod K w elements in the first bit sequence, k is in one-to-one correspondence with j, k 0 represents a value associated with beam indication information, and K W represents the length of the first bit sequence.
  • a method for de-rate matching is provided, and an execution body of the method may be a receiving end.
  • the method may include performing de-rate matching on the second bit sequence according to beam indication information of the first beam.
  • the beam indication information of the first beam which may also be referred to as beam indication information of the first beam, is used to indicate the first beam.
  • the second bit sequence is a bit sequence obtained by performing rate matching on the first bit sequence according to beam indication information of the first beam
  • the first bit sequence is a bit sequence obtained by channel coding the original data bits.
  • the execution body of the method may be a terminal device (for example, a UE). If the second bit sequence is applied to the uplink transmission process, the execution body of the method may be a network device (such as a base station).
  • performing de-rate matching on the second bit sequence according to the beam indication information of the first beam may include: first, determining, according to beam indication information of the first beam, an initial of the second bit sequence Bit. Then, the second bit sequence is de-rate matched according to the initial bits of the second bit sequence.
  • the optional implementation provides a method for performing a rate-matching operation according to the beam indication information, and the specific implementation is not limited thereto. It can be understood that, in the case that information such as interference received in the process of transmitting information from the transmitting end to the receiving end is not considered, the bit sequence obtained by performing rate de-matching on the second bit sequence is subjected to channel decoding, and the original data can be obtained. Bit.
  • the application provides an information transmission method
  • the execution body of the method may be a network device (such as a base station) or a terminal device.
  • the method may include: first performing rate matching on the first bit sequence according to the beam indication information to obtain a second bit sequence; wherein the first bit sequence is a bit sequence obtained by channel coding the original data bits.
  • the second bit sequence is then mapped onto the time-frequency resource.
  • the second bit sequence mapped to the time-frequency resource is sent to the receiving end by the beam indicated by the beam indication information.
  • the transmitting end considers the beam in the process of performing the rate matching operation, and the explanation of the related content, the specific implementation manner of the related steps, and the beneficial effects can refer to the rate matching method provided by the foregoing first aspect.
  • the method may further include: sending, by using RRC signaling, MAC signaling, or DCI or uplink control information UCI, beam indication information to the receiving end.
  • the present application provides an information transmission method, and an execution body of the method may be a terminal device (such as a UE) or a network device (such as a base station).
  • the method can include first receiving a first signal transmitted by the first beam from the transmitting end. Then, the first signal is demodulated to obtain a second bit sequence. Finally, the second bit sequence is de-rate matched according to the beam indication information associated with the first beam.
  • the receiving end considers the beam in the process of performing the de-rate matching operation, and the explanation of the related content, the specific implementation manner of the related steps, and the beneficial effects can refer to the de-rate matching method provided by the second aspect.
  • the “first signal” in the present application and the “second signal” in the following refers to a time domain signal, and may specifically include but not limited to any one of the following signals: orthogonal frequency Orthogonal frequency division multiplexing (OFDM) signal, universal filtered multi-carrier (UFMC) signal, filter-band multi-carrier (FBMC) signal, generalized frequency division multiplexing (generalized frequency-division multiplexing, GFDM) signals, etc., in the specific embodiments of the present application, the OFDM signals are taken as an example for description. It can be understood that the first signal may specifically be one OFDM symbol in the OFDM signal.
  • OFDM orthogonal frequency Orthogonal frequency division multiplexing
  • UFMC universal filtered multi-carrier
  • FBMC filter-band multi-carrier
  • GFDM generalized frequency division multiplexing
  • the method may further include: receiving beam indication information by using RRC signaling, MAC signaling, or DCI or UCI.
  • the beam indication information may include beam information of each beam used when the transmitting end sends information to the receiving end.
  • the beam information of multiple beams may be carried in the same signaling or may be carried in different signaling.
  • the method may further include: receiving a second signal sent by the second beam from the transmitting end; demodulating the second signal to obtain a third bit sequence; and combining the beam according to the second beam Instructing information, performing de-rate matching on the third bit sequence; performing a bit-sequence obtained by de-rate matching the second bit sequence, and a bit sequence obtained by performing rate-matching on the third bit sequence, performing soft combining;
  • the bit sequence obtained after soft combining is subjected to channel decoding.
  • the first signal and the second signal may be the same signal or different signals.
  • the first signal and the second signal are the same OFDM symbol, or different OFDM symbols.
  • the first beam and the second beam are two different beams.
  • the possible implementation manner can be considered that the information obtained by monitoring on one beam cannot be correctly decoded to obtain the original data bits, and the information obtained by monitoring on other beams can be obtained, and the information obtained on different beams can be demodulated and solved. After the operations such as rate matching, soft combining and channel decoding are performed to obtain original data bits.
  • the present application provides a rate matching apparatus, which may be the transmitting end involved in the above first aspect, or may be a chip for performing the rate matching method provided by the above first aspect.
  • the apparatus may include: a rate matching unit, configured to perform rate matching on the first bit sequence according to the beam indication information to obtain a second bit sequence; wherein the first bit sequence is a bit sequence obtained by channel coding the original data bit .
  • the rate matching unit may be specifically configured to determine an initial bit of the second bit sequence according to the beam indication information. Then, the first bit sequence is rate matched according to the initial bit of the second bit sequence, and the second bit sequence is determined.
  • the rate matching unit may be specifically configured to: according to a formula Obtaining a second bit sequence; wherein e k represents the kth element in the second bit sequence, k is an integer, Representing the (j+k 0 ) mod K w elements in the first bit sequence, k is in one-to-one correspondence with j, k 0 represents a value associated with beam indication information, and K W represents the length of the first bit sequence.
  • the present application provides a de-rate matching device, which may be the receiving end involved in the above second aspect, or may be a chip for performing the method of de-rate matching provided by the above second aspect.
  • the apparatus may include: a de-rate matching unit, configured to perform rate de-matching on the second bit sequence according to the beam indication information of the first beam.
  • the de-rate matching unit may be specifically configured to: first, determine an initial bit of the second bit sequence according to the beam indication information of the first beam. Then, the second bit sequence is de-rate matched according to the initial bits of the second bit sequence.
  • the present application provides an information transmission apparatus, which may be a network device (such as a base station) or a terminal device (such as a UE).
  • the apparatus can include a rate matching unit, a mapping unit, and a transmitting unit.
  • the rate matching unit is configured to perform rate matching on the first bit sequence according to the beam indication information to obtain a second bit sequence.
  • the first bit sequence is a bit sequence obtained by channel coding the original data bits.
  • a mapping unit configured to map the second bit sequence onto the time-frequency resource.
  • a sending unit configured to send, by using a beam indicated by the beam indication information, a second bit sequence mapped to the time-frequency resource to the receiving end.
  • the sending unit may be further configured to: send the beam indication information to the terminal device by using RRC signaling, MAC signaling, or DCI or uplink control information UCI.
  • the present application provides an information transmission apparatus, which may be a terminal device (such as a UE) or a network device (such as a base station).
  • the apparatus may include: a receiving unit, a demodulating unit, and a de-rate matching unit.
  • the receiving unit is configured to receive the first signal sent by the first beam from the transmitting end.
  • a demodulating unit configured to demodulate the first signal to obtain a second bit sequence.
  • a rate matching unit configured to perform rate de-matching on the second bit sequence according to the beam indication information associated with the first beam.
  • the receiving unit may be further configured to receive beam indication information by using RRC signaling, MAC signaling, or DCI or UCI.
  • the receiving unit is further configured to receive, by the sending end, the second signal sent by the second beam.
  • the demodulation unit is further configured to demodulate the second signal to obtain a third bit sequence.
  • the solution rate matching unit may be further configured to perform rate de-matching on the third bit sequence according to the beam indication information associated with the second beam.
  • the apparatus can also include a soft combining unit and a channel decoding unit.
  • the soft combining unit is configured to perform a soft combining by using a bit sequence obtained by performing rate matching on the second bit sequence and a bit sequence obtained by performing rate matching on the third bit sequence.
  • a channel decoding unit is configured to perform channel decoding on the bit sequence obtained after soft combining.
  • the beam indication information may include at least one of the following information: the relative number of the beam, the logical number of the beam, the physical number of the beam, based on any of the possible implementations provided by any of the aspects or any of the aspects provided above.
  • the present application provides a rate matching apparatus, which can implement the functions performed in the example of the rate matching method provided by the foregoing first aspect, and the functions can be implemented by hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the device includes a processor and a memory; optionally, the device may further include a communication interface.
  • the processor is configured to support the apparatus to perform the corresponding functions of the methods provided by the first aspect above.
  • the communication interface is used to support communication between the device and other network elements.
  • a memory is coupled to the processor that holds the program instructions and data necessary for the device.
  • the processor may be integral with the processor or may be relatively independent.
  • the communication interface may specifically be a transceiver.
  • the device can be a chip or a device.
  • the present application provides a device for de-rate matching, which may implement the functions performed in the example of the method for de-rate matching provided by the foregoing second aspect, and the functions may be implemented by hardware or by hardware. Perform the appropriate software implementation.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the device includes a processor and a memory; optionally, the device may further include a communication interface.
  • the processor is configured to support the apparatus to perform the corresponding functions of the methods provided by the second aspect above.
  • the communication interface is used to support communication between the device and other network elements.
  • the memory is for coupling to a processor that holds the program instructions and data necessary for the device.
  • the processor may be integral with the processor or may be relatively independent.
  • the communication interface may specifically be a transceiver.
  • the device can be a chip or a device.
  • the present application provides an information transmission apparatus, which may implement the functions performed in the example of the information transmission method provided by the foregoing third aspect, and the functions may be implemented by hardware or may be performed by hardware.
  • Software Implementation The hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the device includes a processor and a memory; optionally, the device may further include a communication interface.
  • the processor is configured to support the apparatus to perform the corresponding functions of the methods provided by the third aspect above.
  • the communication interface is used to support communication between the device and other network elements.
  • the memory is for coupling to a processor that holds the program instructions and data necessary for the device.
  • the processor may be integral with the processor or may be relatively independent.
  • the communication interface may specifically be a transceiver.
  • the device can be a chip or a device.
  • the present application provides an information transmission apparatus, which can implement the functions performed in the example of the information transmission method provided by the foregoing fourth aspect, and the functions can be implemented by hardware or by hardware.
  • Software Implementation The hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the device includes a processor and a memory.
  • the device may also include a communication interface.
  • the processor is configured to support the apparatus to perform the corresponding functions of the methods provided by the fourth aspect above.
  • the communication interface is used to support communication between the device and other network elements.
  • the memory is for coupling to a processor that holds the program instructions and data necessary for the device.
  • the processor may be integral with the processor or may be relatively independent.
  • the communication interface may specifically be a transceiver.
  • the device can be a chip or a device.
  • the present application provides a computer storage medium for storing computer software instructions corresponding to the rate matching method provided by the above first aspect, comprising a program designed to execute the above ninth aspect.
  • the present application provides a computer storage medium for storing computer software instructions corresponding to the method for de-rate matching provided by the second aspect, which includes a program designed to execute the above tenth aspect.
  • the present application provides a computer storage medium for storing computer software instructions corresponding to the information transmission method provided by the third aspect, which comprises a program designed to execute the above eleventh aspect.
  • the present application provides a computer storage medium for storing computer software instructions corresponding to the information transmission method provided by the fourth aspect, which comprises a program designed to execute the above twelfth aspect.
  • the present application provides a computer program product, when run on a computer, causing the computer to perform any of the rate matching methods provided by the first aspect.
  • the present application provides a computer program product, when run on a computer, causing the computer to perform any of the methods of de-rate matching provided by the second aspect.
  • the present application provides a computer program product, which when executed on a computer, causes the computer to perform any of the information transmission methods provided by the third aspect.
  • the present application provides a computer program product, which when executed on a computer, causes the computer to perform any of the information transmission methods provided by the fourth aspect.
  • any of the devices or computer storage media or computer programs provided above are used to perform the corresponding methods provided above, and therefore, the beneficial effects that can be achieved can be referred to the corresponding methods provided above. The beneficial effects in this are not repeated here.
  • FIG. 1 is a schematic diagram of a process flow of a PDCCH by a base station in an LTE system provided by the prior art
  • FIG. 1a is a schematic diagram of a process of rate matching provided by the prior art
  • FIG. 2 is a schematic diagram of a process flow of a UE to a PDCCH in an LTE system according to the prior art
  • FIG. 3 is a schematic diagram of a system architecture applicable to the technical solution provided by the embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a scenario to which the technical solution provided by the embodiment of the present application is applicable.
  • FIG. 7 is a schematic diagram of another scenario to which the technical solution provided by the embodiment of the present application is applicable.
  • FIG. 8 is a schematic flowchart diagram of an information transmission method according to an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a base station performing a scrambling operation according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic flowchart of another base station performing a scrambling operation according to an embodiment of the present disclosure
  • FIG. 11 is a schematic diagram of beam indication information according to an embodiment of the present disclosure.
  • FIG. 11b is a schematic diagram of another beam indication information according to an embodiment of the present disclosure.
  • FIG. 11c is a schematic diagram of another beam indication information according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of another beam indication information according to an embodiment of the present disclosure.
  • FIG. 11 e is a schematic diagram of another beam indication information according to an embodiment of the present disclosure.
  • FIG. 11f is a schematic diagram of another beam indication information according to an embodiment of the present disclosure.
  • FIG. 11g is a schematic diagram of another beam indication information according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic flowchart diagram of another information transmission method according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic flowchart of a UE performing a descrambling operation according to an embodiment of the present disclosure
  • FIG. 14 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of another information transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of another information transmission apparatus according to an embodiment of the present application.
  • a radio frame includes 10 subframes, each of which has a length of 1 millisecond (ms), and each subframe includes two slots, each slot being 0.5 ms.
  • the number of symbols included in each slot is related to the length of the cyclic prefix (CP) in the subframe. If the CP is a normal CP, each slot includes 7 symbols, and each subframe is composed of 14 symbols. For example, each subframe can be numbered by #0, #1, #2, #3,# 4, #5, #6, #7, #8, #9, #10, #11, #12, #13 symbol composition. If the CP is an extended CP, each slot includes 6 symbols, and each subframe is composed of 12 symbols.
  • each subframe can be numbered by #0, #1, #2, #3,# 4, #5, #6, #7, #8, #9, #10, #11 symbol composition.
  • symbol herein refers to an orthogonal frequency division multiplexing (OFDM) symbol.
  • a PDCCH is typically transmitted on the first or first two or first three OFDM symbols of a subframe, which may be referred to as control symbols.
  • control symbols For example, if the bandwidth of the LTE system is 1.4 megahertz (MHz), the PDCCH may be transmitted on the ⁇ 2, 3, 4 ⁇ OFDM symbols.
  • a resource element is a minimum time-frequency resource unit.
  • the RE may be uniquely identified by an index pair (k, l), where k is the subcarrier index and l is the symbol index.
  • Four consecutive REs (where the RE occupied by the reference signal are not counted) constitute one resource element group (REG).
  • the REG can be identified by an index pair (k', l').
  • the basic unit of the time-frequency resource carrying the control channel is a control channel element (CCE).
  • CCE contains 9 REGs.
  • the PDCCH can be transmitted using different aggregation levels (AL).
  • the aggregation level refers to how many CCEs the PDCCH carries.
  • the aggregation level can be 1, 2, 4, 8.
  • the aggregation level is 2, which means that the PDCCH is carried on two CCEs.
  • the time-frequency resource corresponding to the symbol in which the PDCCH is located may also carry the following information: a reference signal (RS), and a physical control frame format indication channel ( Physical control formation indication channel (PCFICH), physical HARQ indication channel (PHICH); wherein HARQ is an abbreviation of hybrid automatic repeat request.
  • RS reference signal
  • PCFICH Physical control formation indication channel
  • PHICH physical HARQ indication channel
  • the PCFICH carries control format indication (CFI) information, and the CFI information is used to notify the user equipment (UE) of the number of symbols occupied by the control channel.
  • CFI information can be used by the UE to calculate the total number of resources occupied by the control channel.
  • the CFI information can also be used by the UE to determine the starting position of the data channel in the time domain, i.e. from the first few symbols is the data channel.
  • the PCFICH is a broadcast channel. The base station will send the PCFICH on the first symbol of a subframe. The configuration of the PCFICH itself is notified by other signaling.
  • the PHICH can be used to perform HARQ feedback of UE uplink data.
  • PHICH is a multicast channel.
  • the base station can transmit the PHICH on the first OFDM symbol of one subframe.
  • the configuration of the PHICH itself is notified by a master information block (MIB) carried on a physical broadcast channel (PBCH).
  • MIB master information block
  • PBCH physical broadcast channel
  • the total number of REGs corresponding to the symbols occupied by the control channel is determined by the number of symbols and the bandwidth.
  • the total REG number is subtracted from the time-frequency resource occupied by the PCFICH and the PHICH, that is, the time-frequency resource that the PDCCH can use.
  • two search spaces are defined in the LTE system, which are a common search space and a UE-specific search space.
  • the aggregation level of the PDCCH may be 4, 8.
  • the PDCCH aggregation level may be 1, 2, 4, 8.
  • a beam is a communication resource.
  • the beam can be a wide beam, or a narrow beam, or other type of beam.
  • the beamforming technique can be beamforming techniques or other technical means.
  • the beamforming technique may be specifically a digital beamforming technique, an analog beamforming technique, or a hybrid beamforming technique. Different beams can be considered as different resources.
  • the same information or different information can be transmitted through different beams. Alternatively, multiple beams having the same or similar communication characteristics can be considered as one beam.
  • One or more antenna ports may be included in one beam for transmitting data channels, control channels, sounding signals, and the like.
  • a transmit beam may refer to a distribution of signal strengths that are formed in different directions of space after the signal is transmitted through the antenna.
  • the receive beam may refer to a signal strength distribution of wireless signals received from the antenna in different directions in space. It can be understood that one or more antenna ports forming one beam can also be regarded as one antenna port set.
  • the beam pair is built on the concept of the beam.
  • a beam pair typically includes a transmit beam at the transmitting end and a receive beam at the receiving end.
  • the “beam” in the following refers to the transmit beam of the base station, and the present invention does not limit the receive beam of the UE.
  • first the terms “first”, “second”, etc. are used herein to distinguish different objects and are not intended to limit the order.
  • first symbol group and the second symbol group are merely for distinguishing different symbol groups, and their order is not limited.
  • FIG. 1 it is a schematic diagram of a process flow of a PDCCH by a base station in an LTE system, and specifically includes the following steps S101 to S113:
  • the base station determines original data bits.
  • the base station sends the PDCCH as an example in which the base station sends downlink control information (DCI) to the UE in the kth subframe.
  • DCI downlink control information
  • the original data bits are the DCI.
  • S102 The base station adds a CRC to the original data bit, where the length of the CRC may be defined by a protocol.
  • the bit sequence obtained by the base station after performing S102 can be expressed as: c 0 , c 1 , c 2 , c 3 , ..., c K-1 .
  • K represents the length of the bit sequence obtained after adding the CRC.
  • S103 The base station performs channel coding on the bit sequence obtained after adding the CRC.
  • Channel coding is one of the most important components of a communication system and provides error detection and error correction for the transmission of information bits.
  • the coding of the control channel may be a tail-biting convolutional coding (TBCC), and the encoding of the control channel in the 5G new radio (NR) may be a Polar code or the like. This application does not limit this.
  • the bit sequence output after the i-th channel coding is If the control channel in LTE uses a 1/3 bit rate TBCC code, the bit sequence output after channel coding is
  • S104 The base station performs rate matching on the bit sequence obtained after channel coding.
  • Rate matching refers to matching the number of bits that need to be transmitted (ie, the number of bits of the bit sequence obtained after channel coding) to the number of bits that the allocated resource can carry. Commonly used rate matching methods may include retransmission, truncation, puncturing, and the like.
  • FIG. 1a is an example based on an example in S103.
  • Figure 1a
  • K ⁇ is the interleaver parameter.
  • D is the input sequence length of the interleaver, Is the smallest integer that satisfies the inequality.
  • the output sequence of the interleaver sequentially outputs w k through the ring buffer,
  • the ring buffer is a logical concept.
  • E is determined by the aggregation level. If the aggregation levels are 1, 2, 4, and 8, respectively, the corresponding Es are: 72, 144, 288, 576.
  • S105 The base station performs CCE aggregation on the bit sequence obtained after the rate matching.
  • N REG represents the total number of REGs that the PDCCH can transmit, that is, the total number of REGs other than the REG occupied by the PHICH and the PCFICH.
  • one PDCCH can be aggregated and transmitted in ⁇ 1, 2, 4, 8 ⁇ CCEs. 72 bits of information can be mapped on each CCE.
  • the base station performs resource multiplexing on the bit sequence obtained by the CCE aggregation and the PDCCH sent by the base station to other UEs.
  • the multiplexing refers to transmitting multiple PDCCHs on the same resource.
  • bit sequence length of the i th PDCCH is And represent the bit sequence as Then, the bit sequence obtained after the base station performs resource multiplexing on the n PDCCH PDCCHs may be:
  • this sequence is defined in this application as b(i), and the total length of b(i) is
  • CCEn that is, the nth CCE
  • the mapped bit sequence may be: b(72*n), b(72*n+1), ..., b(72*n+71). If there is a CCE that is not occupied, add ⁇ NIL>.
  • S107 The base station scrambles the bit sequence obtained after resource multiplexing.
  • Scrambling refers to modulo-adding another sequence (ie, the sequence of bits to be scrambled) with one sequence (ie, a scrambling sequence) to randomize interference between neighboring cells.
  • S108 The base station modulates the bit sequence obtained after the scrambling.
  • the modulation of the PDCCH is generally performed by a quadrature phase shift keying (QPSK) modulation method, that is, two bits are modulated into one QPSK symbol, and the specific modulation method is not limited in this application. Obtained in S107 After modulation, a symbol sequence d(m) is obtained.
  • QPSK quadrature phase shift keying
  • S109 The base station performs layer mapping and precoding on the symbol sequence obtained after the modulation.
  • precoding is an optional step, and for the sake of simplicity of the description, the specific examples below are described on the basis of not considering this step.
  • This application does not limit the specific implementation of S109. Taking an antenna port as an example, the symbol sequence obtained by performing layer mapping and precoding on the symbol sequence d(m) is marked as y(m).
  • S110 The base station interleaves and cyclically shifts the symbol sequence obtained after precoding.
  • the interleaving and cyclic shifting operations are performed in units of quadruplets.
  • a quadruple group z(i) ⁇ y(4i), y(4i+1), y(4i+2), y(4i+3)>.
  • the quadruple sequence can be expressed as z(0), z(1), z(2), z(3).... Interleaving and cyclic shifting are performed on a quadruple sequence.
  • the information obtained by the element z(i) in the quadruplet sequence is marked as w(i)
  • the base station pairs the quadruplet sequence z(0), z( 1), z(2), z(3)...
  • the obtained information can be marked as w(0), w(1), w(2), w(3)...
  • the cyclic shift is related to the cell ID.
  • the information obtained by the base station after performing the cyclic shift operation on the element w(i) in the quadruplet sequence is marked as then:
  • the base station performs resource mapping on the symbol sequence obtained after the cyclic shift according to the mapping rule of the frequency domain after the time domain.
  • Resource mapping refers to mapping a sequence of symbols onto a time-frequency resource. Taking an antenna port as an example, resource mapping means Maps to the REG(k',l') corresponding to the port. In the LTE system, the mapping rule is a pre-time domain and a post-frequency domain. For example, taking the control channel to occupy 3 symbols as an example, the resource mapping may be specifically: the base station will Map to REG(0,0), will Map to REG(0,1), will Map to REG(0,2), will Map to REG(1,0)...
  • the base station performs inverse fast fourier transform (IFFT) on the information mapped to the time-frequency resource.
  • IFFT inverse fast fourier transform
  • the QPSK symbols on the subcarriers are modulated into OFDM waveforms by IFFT.
  • S113 The signal obtained by the base station after sending the IFFT to the UE, that is, the OFDM time domain signal.
  • FIG. 2 it is a schematic diagram of a process flow of a UE to a PDCCH in an LTE system, where the UE receives the PDCCH in the kth subframe (ie, subframe k), and the modulation mode is a QPSK modulation mode.
  • the method may include the following steps S201 to S209:
  • the UE listens to the control channel in the subframe k.
  • the signal monitored by the UE (that is, the signal received by the UE) is a wireless signal carried by the OFDM waveform, that is, an OFDM time domain signal.
  • the UE performs fast Fourier transform (FFT) on the monitored signal.
  • FFT fast Fourier transform
  • the OFDM symbol can be transformed into a QPSK symbol to obtain a symbol sequence.
  • S203 The UE performs deinterleaving and cyclic shift inverse operations on the symbol sequence obtained after the FFT.
  • the process of deinterleaving and cyclic shift inverse operation corresponds to S110, and can be considered as the inverse process of S110.
  • S204 The UE demodulates the symbol sequence obtained after the cyclic shift inverse operation.
  • the symbol sequence can be changed to a bit sequence.
  • the process of demodulation corresponds to S108 and can be considered as the inverse of S108.
  • S205 The UE performs descrambling on the bit sequence obtained after demodulation.
  • the process of descrambling corresponds to S107 and can be considered as the inverse of S107.
  • S206 The UE performs blind detection on the bit sequence obtained by the descrambling.
  • Blind detection refers to the location and aggregation level of the UE attempting to search all possible alternative PDCCHs in the space.
  • the specific implementation manner of the blind detection is not limited in this application.
  • the mth candidate PDCCH obtained by blind detection may be composed of the following CCEs:
  • L is the aggregation level and can be ⁇ 1, 2, 4, 8 ⁇ .
  • N CCE,k represents the number of CCEs used in the subframe k for outgoing control channels.
  • i 0,...,L-1.
  • m 0,...,M (L) -1.
  • M (L) indicates the number of candidate PDCCHs when the aggregation level is L, and LTE specifies a search space dedicated to the UE.
  • LTE specifies a search space dedicated to the UE.
  • n RNTI represents a UE ID and is used to identify a UE.
  • n CI is the carrier indication and is 0 in the case of a single carrier.
  • n s is a radio frame slot number.
  • S207 The UE performs rate de-matching on the candidate PDCCH obtained by the blind detection.
  • the process of the rate matching process corresponds to S104, and can be considered as the inverse process of S104.
  • S208 The UE performs channel decoding on the bit sequence obtained by the de-rate matching.
  • S209 The UE performs CRC check on the bit sequence obtained by channel decoding.
  • the UE determines whether the reception is correct by using the CRC check, that is, whether the candidate PDCCH obtained by blind detection in S206 is really the PDCCH sent to the UE. If unsuccessful, blind detection is performed to obtain the next candidate PDCCH until all candidate PDCCHs are traversed. If successful, the alternative PDCCH obtained by blind detection in S206 is the PDCCH transmitted to the UE.
  • multiple beams can be used to transmit the PDCCH to one UE.
  • Multiple beams may be used for communication between the UE and the base station simultaneously.
  • robustness can be understood as stability or robustness and the like.
  • LTE itself does not consider the beam-related information processing flow.
  • the same step is performed for each of the multiple beams of the base station, that is, , conditions that do not make full use of multiple beams.
  • the present application provides an information transmission method and apparatus.
  • the specificity is to improve the robustness of information transmission by considering the influence of beam pair rate matching.
  • the technical solution provided by the present application can be applied to the system architecture shown in FIG. 3.
  • the system architecture shown in FIG. 3 includes a network device 100 and one or more terminal devices 200 connected to the network device 100.
  • the network device 100 may be a device that can communicate with the terminal device 200.
  • Network device 100 can be a base station, a relay station, or an access point, and the like.
  • the base station may be a base transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (CDMA) network, or may be a broadband code division.
  • the NB (NodeB) in the wideband code division multiple access (WCDMA) may also be an eNB or an eNodeB (evolutional NodeB) in LTE.
  • the network device 100 may also be a wireless controller in a cloud radio access network (CRAN) scenario.
  • the network device 100 may also be a network device in a future 5G network or a network device in a future evolved PLMN network; it may also be a wearable device or an in-vehicle device or the like.
  • the terminal device 200 may be a UE, an access terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a UE terminal, a terminal, a wireless communication device, a UE proxy, or a UE device.
  • the access terminal may be a cellular phone, a cordless phone, a SIP (session initiation protocol) phone, a WLL (wireless local loop) station, a personal digital assistant (PDA), with wireless communication.
  • the network device 100 is a base station
  • the terminal device 200 is a UE as an example.
  • the base station may include an indoor baseband unit (BBU) and a remote radio unit (RRU), and the RRU and the antenna feeder system (ie, an antenna) are connected.
  • BBU indoor baseband unit
  • RRU remote radio unit
  • the BBU and the RRU may be as needed. Take it apart.
  • the mobile phone may include: a radio frequency (RF) circuit 110, a memory 120, other input devices 130, a display screen 140, a sensor 150, an audio circuit 160, an I/O subsystem 170, a processor 180, And components such as power supply 190.
  • RF radio frequency
  • FIG. 5 the structure of the mobile phone shown in FIG. 5 does not constitute a limitation on the mobile phone, and may include more or less components than those illustrated, or combine some components, or split some components, or Different parts are arranged.
  • the display screen 140 belongs to a user interface (UI), and the display screen 140 can include a display panel 141 and a touch panel 142.
  • the handset can include more or fewer components than shown.
  • the mobile phone may also include functional modules or devices such as a camera and a Bluetooth module, and details are not described herein.
  • the processor 180 is connected to the RF circuit 110, the memory 120, the audio circuit 160, the I/O subsystem 170, and the power supply 190, respectively.
  • the I/O subsystem 170 is connected to other input devices 130, display 140, and sensor 150, respectively.
  • the RF circuit 110 can be used for receiving and transmitting signals during and after receiving or transmitting information, and in particular, receiving downlink information of the base station and processing it to the processor 180.
  • the memory 120 can be used to store software programs as well as modules.
  • the processor 180 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 120.
  • Other input devices 130 can be used to receive input numeric or character information, as well as to generate key signal inputs related to user settings and function controls of the handset.
  • the display screen 140 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone, and can also accept user input.
  • Sensor 150 can be a light sensor, a motion sensor, or other sensor.
  • the audio circuit 160 can provide an audio interface between the user and the handset.
  • the I/O subsystem 170 is used to control external devices for input and output, and the external devices may include other device input controllers, sensor controllers, and display controllers.
  • the processor 180 is the control center of the handset 200, which connects various portions of the entire handset using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 120, and recalling data stored in the memory 120, The various functions and processing data of the mobile phone 200 are executed to perform overall monitoring of the mobile phone.
  • a power source 190 (such as a battery) is used to power the various components described above.
  • the power source can be logically coupled to the processor 180 through a power management system to manage functions such as charging, discharging, and power consumption through the power management system.
  • the technical solution provided by the present application is particularly applicable to a 5G NR system.
  • the 5G NR in order to ensure the robustness of the control channel, multiple beams can be used to transmit the PDCCH to one UE.
  • the technical solution provided by the present application is particularly applicable to a scenario based on multiple beams. There are two typical scenarios for transmitting one PDCCH using multiple beams.
  • the information transmission method provided by the present application can be applied to the downlink and the uplink. When applied to the downlink, the transmitting end is a network device, and the receiving end is a terminal device, such as a UE. When applied to the uplink, the transmitting end is a terminal device, and the receiving end is a receiving end. Network equipment, such as a base station. The following main behavior examples are described below.
  • Scenario 1 A plurality of beams can be simultaneously used for communication between a UE and a base station. As shown in FIG. 6, the base station transmits a PDCCH to the UE using one control symbol (ie, control symbol 0), and simultaneously transmits the PDCCH using two beams (ie, beam 1 and beam 2).
  • Scenario 2 The UE communicates with the base station using one beam at the same time. As shown in FIG. 7, the base station transmits PDCCH to the UE by using two control symbols (ie, control symbol 0 and control symbol 1), and transmits one control symbol on each beam, that is, transmits control symbol 0 on beam 1. The control symbol 2 is transmitted on the beam 2.
  • FIG. 6 and FIG. 7 are only examples, which do not constitute a limitation of the scenario to which the technical solution provided by the present application is applicable.
  • a base station can transmit a PDCCH on three or more control symbols.
  • FIG. 8 is a schematic flowchart diagram of an information transmission method provided by an embodiment of the present application. It should be noted that FIG. 8 is an example in which a base station processes a PDCCH transmitted on one beam as an example. The method may include the following steps S301 to S312:
  • S304 The base station performs rate matching on the bit sequence obtained after channel coding according to the beam indication information.
  • S304 may include the following steps T1 to T2:
  • T1 The base station determines an initial bit of the second bit sequence according to the beam indication information.
  • the base station determines, according to the beam indication information, a position of the initial bit of the second bit sequence in the first bit sequence.
  • the first bit sequence may be a bit sequence obtained after channel coding, such as a bit sequence directly output after channel coding, or a bit sequence output after channel coding and other processing (eg, interleaving operation, etc.).
  • the second bit sequence is a bit sequence obtained after rate matching.
  • T2 The base station performs rate matching on the first bit sequence according to the initial bit of the second bit sequence, and determines the second bit sequence.
  • the method for acquiring other bits in the second bit sequence is not limited.
  • the base station may continuously acquire a preset number of bits from the initial bit, as The second bit sequence; or, a preset number of bits may be acquired in an odd or even manner from the initial bit, as a second bit sequence, etc., and other examples are not enumerated.
  • S304 may include the following step M1:
  • M1 base station according to formula Obtaining a second bit sequence; wherein e k represents the kth element in the second bit sequence, k is an integer, Representing the (j+k 0 ) mod K w elements in the first bit sequence, k is in one-to-one correspondence with j, k 0 represents a value associated with beam indication information, and K W represents the length of the first bit sequence.
  • step 3 the steps shown in FIG. 9 and FIG. 10 above may be considered as a specific implementation of the selector, that is, step 3) in step S104 above may be replaced. It is the above step M1.
  • the first bit sequence is the output sequence of the ring buffer.
  • E is determined by the aggregation level. If the aggregation levels are 1, 2, 4, and 8, respectively, the corresponding Es are: 72, 144, 288, 576.
  • k 0 is a beam-related value, for example,
  • the base station and the UE may pre-agreed the correlation between k 0 and the beam indication information. Specific examples thereof can be referred to below.
  • E may be a value associated with the beam.
  • E is related to beam quality.
  • RSRP reference signal receiving power
  • a method for correlating the beam quality and the aggregation level may be as follows: when the aggregation level is 1, 2, 4, and 8 as an example, when the base station uses multiple beams to transmit the PDCCH to the UE, the quality of any two beams is different by X1 or In the above, the aggregation levels of the PDCCHs sent on the two beams may be different by one; if the quality of any two beams is different by X2 or more, the aggregation levels of the PDCCHs transmitted on the two beams may be different by 2; any two beams If the quality is different by X3 or more, the aggregation levels of the PDCCHs transmitted on the two beams may differ by 3. Where X1 ⁇ X2 ⁇ X3.
  • the rate matching operation provided by the present application is related to beam indication information, each beam indication information is used to indicate one beam, and different beam indication information indicates different beams.
  • Each beam can be indicated by one or more beam indication information, and different beams can be indicated by different beam indication information.
  • the specific implementation manner of the beam indication information is not limited in this application. Several alternative methods are listed below:
  • the beam indication information is the relative number of the beams.
  • k 0 beam idx .
  • the base station sends a PDCCH to the UE by using two beams.
  • the beam indication information is the logical number of the beam.
  • Mode 3 The beam indication information is the physical number of the beam.
  • N is a predefined or configurable integer.
  • N is a predefined or configurable integer.
  • N is a predefined or configurable integer.
  • the beam indication information is a port number.
  • One beam can correspond to one or more port numbers. Therefore, the beam number corresponding to one beam can be used to indicate the beam.
  • the beam indication information is quasi colocation (QCL) information.
  • Quasi-co-location used to indicate that one or more identical or similar communication features exist between multiple resources.
  • multiple resources with a parity relationship the same or similar communication configuration may be adopted.
  • large-scale characteristics of the channel in which one port transmits one symbol can be inferred from the large-scale characteristics of the channel through which one symbol transmits one symbol.
  • large-scale characteristics may include: delay spread, average delay, Doppler spread, Doppler shift, average gain, terminal equipment receive beam number, transmit/receive channel correlation, receive angle of arrival, receiver antenna space Relevance and so on.
  • the resources of other signals transmitted on the beam transmitting the PDCCH can be used to indicate the beam.
  • the signal may be a reference signal, such as a CSI-RS.
  • the “resources” herein may include, but are not limited to, at least one of the following information: time-frequency resources, number of ports, periods, offsets, and the like.
  • the base station sends a PDCCH to the UE using a certain beam, the base station transmits the CSI-RS using this beam. This is because the general base station needs to first send a CSI-RS to the UE to perform channel measurement; then, the channel measurement result is used to send the PDCCH to the UE. Based on this, the base station can know which beam or beams to use to transmit the PDCCH by the base station, as long as the base station notifies the UE of the port number and/or the resource number used by the CSI-RS.
  • FIG. 11d it is a correspondence between CSI-RS resources and beams.
  • the CSI-RS resource number may be a resource ID, or a resource ID+port ID.
  • beam idx ⁇ 0, 1, ... ⁇ , where each number represents a CSI-RS resource
  • k 0 beam idx mod N
  • N is a predefined or configurable integer
  • the beam indication information is beam pair link (BPL) information.
  • the BPL information may be a BPL number or the like.
  • beam idx ⁇ 0, 1, ... ⁇ , where each number represents a BPL, as shown in Figure 11e.
  • k 0 beam idx .
  • the base station uses the beam pair 0 and the beam pair 1 to send the PDCCH to the UE.
  • the beam indication information is a UE group.
  • the UEs in one beam coverage form one UE group, each UE group may include one or multiple UEs, and one UE may belong to one or multiple UE groups.
  • the UE group 1 corresponding to the beam 1 includes the UE1, the UE group 2 corresponding to the beam 2 includes the UE1 and the UE2, and the UE group 3 corresponding to the beam 3 includes the UE2.
  • beam idx ⁇ 0, 1, ... ⁇ , where each number refers to a group of UEs
  • k 0 beam idx .
  • the beam indication information is a time domain symbol.
  • the time domain symbol refers to an OFDM symbol occupied when the beam is transmitted.
  • This method is applicable to a scenario in which a base station transmits a PDCCH to a same UE on different symbols using multiple beams, and transmits a PDCCH to the UE using only one beam per symbol. As shown in FIG. 11g, the base station transmits a PDCCH to the UE using one beam at symbol 0, and transmits a PDCCH to the UE using another beam at symbol 1.
  • the beam indication information may also be a combination of the at least two pieces of information, for example, in the foregoing manner 5 An example of this. Of course, it is not limited to the above information. This application is not listed one by one.
  • the base station considers the beam when performing the scrambling operation.
  • the bit sequence obtained after the rate matching corresponding to different beams is not limited in the present application. That is to say, the bit sequences obtained after the rate matching of different beams may be the same or different.
  • the beam of communication between the base station and the same UE may change with the movement of the UE.
  • the present application does not limit the change rule of the used beam. In this case, therefore, the beam indication information is not a fixed value.
  • the base station can notify the UE of the beam indication information by signaling.
  • the embodiment of the present application does not limit the execution order of the steps and other steps in FIG. 8. Alternatively, the step may be performed before S301.
  • the signaling used to send the beam indication information may be a newly designed signaling, or may reuse one signaling in the prior art.
  • the base station may use radio resource control (RRC) signaling, medium access control (MAC) signaling, or downlink control information (DCI) or uplink control information (uplink).
  • RRC radio resource control
  • MAC medium access control
  • DCI downlink control information
  • uplink uplink control information
  • Control information sends beam indication information to the UE.
  • the base station sends the beam indication information to the UE through RRC signaling or MAC signaling, which may be applicable to a scenario where the beam change is slow.
  • the base station sends the beam indication information to the UE through the DCI, which can be applied to a scenario in which the beam change is fast.
  • the base station performs resource mapping on the symbol sequence obtained after the cyclic shift according to the mapping rule of the time domain after the frequency domain.
  • the mapping rule may be a pre-frequency domain post-time domain, thus avoiding occupying one beam in one beam.
  • the UE in the beam direction cannot receive information transmitted on different beams due to the mapping rules in the frequency domain after the first time domain. It can be understood that if a beam occupies multiple symbols, the information transmitted by using the beam may be mapped according to the mapping rule of the time domain after the frequency domain, or may be mapped according to the mapping rule of the time domain after the frequency domain.
  • resource mapping refers to Maps to the REG(k',l') corresponding to the port. Among them, about For a description, refer to S111 above.
  • the base station may perform resource mapping on the symbol sequences corresponding to the two beams: Map to REG(0,0), will Map to REG(1,0), will Map to REG(2,0), will Map to REG(3,0)....
  • step S312 Reference may be made to step S112 in LTE, and details are not described herein again.
  • the base station sends an OFDM time domain signal to the UE by using a beam indicated by the beam indication information.
  • the above S301 to S313 are examples of the processing procedure of the PDCCH transmitted by the base station on one beam.
  • the base station may perform the above process multiple times. It should be understood that some of the above steps may be optional, or the order of execution may be adjusted, and is not performed in full accordance with the execution order of LTE. This embodiment of the present invention does not limit this.
  • the base station considers the beam in the process of performing the rate matching operation, so that the bit sequences obtained by matching the PDCCH rates transmitted on different beams may be different, that is, the versions of the PDCCH transmitted on different beams may be different.
  • the purpose of improving the signal-to-noise ratio (SNR) and reducing the code rate can be achieved, thereby improving the robustness of the control channel.
  • FIG. 12 is a schematic flowchart diagram of an information transmission method provided by an embodiment of the present application. It should be noted that FIG. 12 is an example in which the UE processes the PDCCH transmitted on one beam as an example. The method may include the following steps S401 to S409:
  • the UE monitors the PDCCH transmitted by the beam in the subframe k.
  • the signal monitored by the UE ie, the signal received by the UE
  • S402 to S406 the same as S202 to S206.
  • the UE performs rate de-matching on the candidate PDCCH obtained by the blind detection according to the beam indication information, where the beam indication information is used to indicate the beam in S401.
  • S407 includes the following steps N1 to N2:
  • N1 The UE determines an initial bit of the second bit sequence according to the beam indication information.
  • the second bit sequence herein may be regarded as a bit sequence obtained after performing rate de-matching on the candidate PDCCH.
  • N2 The UE performs rate de-matching on the second bit sequence according to the initial bit of the second bit sequence.
  • the specific implementation process of the steps N1 to N2 corresponds to the specific example of the S304, and the specific implementation process may refer to the above, and details are not described herein again.
  • the related description of the beam indication information can also refer to the above.
  • the method may further include: the UE receiving the beam indication information by using RRC signaling, MAC signaling, or DCI.
  • the UE specifically uses which signaling receiving beam indication information is related to which signaling the base station uses to transmit beam indication information. For example, if the base station transmits beam indication information using RRC signaling, the UE receives beam indication information using RRC signaling. Other examples are not listed one by one.
  • the UE may try to perform soft combining and then decoding the bit sequence obtained by demodulating and de-rate matching the received information of two or more beams.
  • the specific algorithm of soft combining differs according to the encoding method. For example, reference may be made to turbo coding and HARQ-IR soft combining in LTE. It can be understood that, in this case, the UE needs to store the version of the received information corresponding to the PDCCH that is decoded incorrectly (ie, the information of the bit sequence to be subjected to the de-rate matching) for soft combining.
  • the reason why the PDCCH is incorrectly decoded may be because the PDCCH is not for the UE, or is interfered by the transmission process, etc., which is not limited in this application.
  • the UE considers a beam in the process of performing a de-rate matching operation, and the process of the de-rate matching corresponds to the process of rate matching in the embodiment shown in FIG. 8. Therefore, the explanation of the related content is performed.
  • the beneficial effects that can be achieved reference may be made to the corresponding parts in the embodiment shown in FIG. 8, and details are not described herein again.
  • each network element such as a network device (such as a base station) or a terminal device (such as a UE).
  • a network device such as a base station
  • a terminal device such as a UE
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiment of the present application may divide the function module into the network device or the terminal device according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner. The following is an example of dividing each functional module by using corresponding functions:
  • FIG. 14 shows a schematic structural diagram of an information transmission device 140.
  • the information transmission device 140 may be the network device 100 (corresponding to the downlink) involved in the foregoing, such as a base station, or a terminal device (corresponding to an uplink), such as a UE, or a chip.
  • the information transmission device 140 may include a rate matching unit 1401, a mapping unit 1402, and a transmitting unit 1403.
  • the rate matching unit 1401 may be configured to perform S304 in FIG. 8, steps in FIG. 9, steps in FIG. 10, and/or other processes for supporting the techniques described herein.
  • Mapping unit 1402 can be used to perform S311 in FIG. 8, and/or other processes for supporting the techniques described herein.
  • Transmitting unit 1403 can be used to perform S311 in FIG. 8, and/or other processes for supporting the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 15 shows a schematic structural diagram of an information transmission device 150.
  • the information transmission device 150 may be the terminal device 200 involved in the above, such as a UE, and may also be a network device, such as a base station, or may be a chip.
  • the information transmission device 150 may include a receiving unit 1501, a demodulating unit 1502, and a de-rate matching unit 1503. Wherein, the receiving unit 1501 can be used to execute S401 in FIG. 12, and/or other processes for supporting the techniques described herein.
  • Demodulation unit 1502 may be used to perform S406 in FIG. 12, and/or other processes for supporting the techniques described herein.
  • the information transmission device 150 further includes a channel decoding unit 1504 and a soft combining unit 1505.
  • the channel decoding unit 1504 can be configured to perform channel decoding on the bit sequence obtained after the de-rate matching.
  • the soft combining unit 1505 can soft combine the bit sequences obtained by demodulating and de-rate matching the received information of two or more beams, thereby improving the channel decoding accuracy.
  • the information transmission devices 140-150 are presented in the form of dividing each functional module into individual functional modules, or are presented in an integrated manner to divide the functional modules.
  • a “module” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the above functionality. .
  • ASIC application-specific integrated circuit
  • any of the information transmission devices 140-150 can be implemented by the structure shown in FIG.
  • the information transmission device 160 may include a memory 1601 and a processor 1602.
  • the information transmission device may further include a communication interface 1603.
  • the memory 1602 is configured to store the computer execution instructions.
  • the processor 1601 executes the computer execution instructions stored in the memory 1602 to enable the information transmission device 160 to execute the information transmission method provided by the embodiment of the present application.
  • the transmitting unit 1403 can correspond to the communication interface 1603 in FIG.
  • the rate matching unit 1401 and the mapping unit 1402 may be embedded in hardware or in a memory 2101 independent of the information transmission device 160.
  • receiving unit 1501 can correspond to communication interface 1604 in FIG.
  • the demodulation unit 1502, the de-rate matching unit 1503, the decoding unit 1504, and the soft combining unit 1505 may be embedded in hardware or in a memory 1601 independent of the information transmission device 160.
  • the information transmission device 160 may be a field-programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processing unit. (central processor unit, CPU), network processor (NP), digital signal processor (DSP), microcontroller (micro controller unit (MCU), can also use programmable controller (programmable Logic device, PLD) or other integrated chip.
  • FPGA field-programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processor
  • MCU microcontroller
  • PLD programmable Logic device
  • the embodiment of the present application further provides a storage medium, which may include a memory 1602.
  • the information transmission device provided by the embodiment of the present application can be used to perform the foregoing information transmission method. Therefore, the technical effects of the present invention can be referred to the foregoing method embodiments.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the process or function described in the embodiments of the present application.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a solid state disk (SSD)

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un appareil de transmission d'informations qui se rapportent au domaine technique des communications, et la solution technique considère l'impact d'un faisceau sur la transmission d'informations, de façon à améliorer la robustesse d'un canal de commande. Le procédé peut comprendre : la réalisation, selon des informations d'indication de faisceau, d'une mise en correspondance de débit pour une première séquence de bits pour obtenir une seconde séquence de bits, la première séquence de bits étant la séquence de bits obtenue après qu'un codage de canal a été effectué sur une séquence de bits d'origine ; le mappage de la seconde séquence de bits sur une ressource temps-fréquence ; et l'envoi, par l'intermédiaire d'un faisceau indiqué dans les informations d'indication de faisceau, la seconde séquence de bits mappée sur la ressource temps-fréquence à une extrémité de réception.
PCT/CN2018/080116 2017-03-24 2018-03-23 Procédé et appareil de transmission d'informations WO2018171697A1 (fr)

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EP18771691.5A EP3591867B1 (fr) 2017-03-24 2018-03-23 Procédé et appareil de transmission d'informations
US16/580,884 US11088778B2 (en) 2017-03-24 2019-09-24 Information transmission method and apparatus

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CN201710184780.3 2017-03-24
CN201710184780 2017-03-24
CN201710204289.2A CN108632003B (zh) 2017-03-24 2017-03-30 一种信息传输方法和装置
CN201710204289.2 2017-03-30

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CN112953881A (zh) * 2019-11-26 2021-06-11 华为技术有限公司 一种信号处理装置及网络设备
WO2023003629A1 (fr) * 2021-07-21 2023-01-26 Qualcomm Incorporated Transmission pucch à configurations multiples liée à un rapport l1 ou à une autre rétroaction de csi

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112953881A (zh) * 2019-11-26 2021-06-11 华为技术有限公司 一种信号处理装置及网络设备
CN112953881B (zh) * 2019-11-26 2022-09-02 华为技术有限公司 一种信号处理装置及网络设备
WO2023003629A1 (fr) * 2021-07-21 2023-01-26 Qualcomm Incorporated Transmission pucch à configurations multiples liée à un rapport l1 ou à une autre rétroaction de csi

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