WO2018028657A1 - 数据发送方法、信令发送方法、装置及系统 - Google Patents

数据发送方法、信令发送方法、装置及系统 Download PDF

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Publication number
WO2018028657A1
WO2018028657A1 PCT/CN2017/097008 CN2017097008W WO2018028657A1 WO 2018028657 A1 WO2018028657 A1 WO 2018028657A1 CN 2017097008 W CN2017097008 W CN 2017097008W WO 2018028657 A1 WO2018028657 A1 WO 2018028657A1
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Prior art keywords
uplink
resource
srs
time
signaling
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PCT/CN2017/097008
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English (en)
French (fr)
Inventor
刘鹍鹏
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华为技术有限公司
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Priority to EP17838787.4A priority Critical patent/EP3493418B1/en
Priority to KR1020197006219A priority patent/KR102220840B1/ko
Priority to CA3033709A priority patent/CA3033709C/en
Priority to JP2019507147A priority patent/JP6704618B2/ja
Priority to CN201780048618.7A priority patent/CN109526246B/zh
Priority to AU2017308688A priority patent/AU2017308688C1/en
Priority to BR112019002900-1A priority patent/BR112019002900A2/pt
Priority to MX2019001536A priority patent/MX2019001536A/es
Priority to RU2019106723A priority patent/RU2705091C1/ru
Publication of WO2018028657A1 publication Critical patent/WO2018028657A1/zh
Priority to US16/272,480 priority patent/US10924201B2/en

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    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a data sending method, a signaling sending method, an apparatus, and a system.
  • uplink transmission of multiple transmit antennas based on terminals is supported.
  • the uplink multi-antenna transmission is pre-coded by the antenna, so that the physical uplink shared channel (English: Physical Uplink Shared Channel, PUSCH) can support up to four layers of spatial transmission to improve the reachable data transmission rate and uplink spectrum efficiency of the uplink data transmission. .
  • PUSCH Physical Uplink Shared Channel
  • the user equipment When the uplink multi-antenna transmission is implemented, the user equipment sends a sounding reference signal (Sounding Reference Signal, SRS for short) to the evolved base station (the evolutional Node B, the eNB or the e-NodeB); the eNB determines the SRS according to the SRS.
  • SRS Sounding Reference Signal
  • the precoding matrix is determined by the eNB based on a codebook, the codebook being a predefined finite number of precoding matrix sets; and the eNB transmitting the uplink transmission rank to the UE in an uplink scheduling grant And the precoding matrix; the UE performs layer mapping on the uplink data based on the uplink transmission rank fed back by the eNB, and performs precoding on the uplink data after the layer mapping is performed by using the corresponding precoding vector in the precoding matrix.
  • the eNB selects a precoding matrix from a preset codebook, the precoding matrix is not necessarily suitable for the actual situation of the uplink channel of the UE, resulting in poor transmission performance of the uplink data.
  • the embodiment of the present application provides a data sending method, a signaling sending method, an apparatus, and a system.
  • the technical solution is as follows:
  • a data sending method comprising:
  • the terminal measures the downlink reference signal to obtain a plurality of uplink precoding vectors
  • the SRS is sent to the access network device by using the SRS, and the SRS sent by the different uplink SRS resources is precoded by using the different uplink precoding vectors.
  • uplink scheduling signaling sent by the access network device, where the uplink scheduling signaling is used to indicate a resource index of at least one uplink SRS resource;
  • the terminal pre-encodes the uplink data according to the uplink precoding vector corresponding to the resource index, and sends the pre-coded uplink data to the access network device.
  • an uplink data receiving method includes:
  • the access network device sends a downlink reference signal to the terminal
  • the access network device receives the SRS sent by the terminal on the at least one uplink sounding reference signal SRS resource, and the SRSs of the different uplink SRS resources are precoded by using different uplink precoding vectors, where the uplink precoding a vector is measured by the terminal according to the downlink reference signal;
  • the access network device sends uplink scheduling signaling to the terminal, where the uplink scheduling signaling is used to indicate a resource index of at least one uplink SRS resource;
  • the access network device receives the uplink data sent by the terminal, where the uplink data is pre-coded by using the uplink precoding vector corresponding to the resource index.
  • different uplink SRS resources correspond to different SRS ports.
  • the uplink scheduling signaling is further used to indicate a coded modulation mode MCS used by the uplink data, where the MCS is a location corresponding to the resource index.
  • MCS coded modulation mode
  • the uplink scheduling signaling is further used to indicate a precoding manner adopted by the uplink data, where the precoding mode is an open loop precoding mode or a closed loop pre Encoding.
  • the open-loop precoding mode refers to pre-coding the uplink data on different time-frequency resources by using different uplink precoding vectors in turn.
  • the different time-frequency resources include different physical resource blocks or different sub-carriers or different orthogonal frequency division multiplexing (OFDM) OFDM symbols.
  • OFDM orthogonal frequency division multiplexing
  • the closed-loop precoding mode refers to a manner of precoding the uplink data on a specified time-frequency resource by using the same uplink precoding vector.
  • the uplink scheduling signaling is further used to indicate a time-frequency resource used by the uplink data
  • the time-frequency resource includes at least two sub-bands, and the uplink data sent on each of the sub-bands is pre-coded by using the uplink precoding vector corresponding to the respective resource index.
  • the uplink data sent on the bandwidth of the time-frequency resource is pre-coded by using the uplink precoding vector corresponding to the resource index.
  • the uplink scheduling signaling is further used to indicate a time-frequency resource used by the uplink data
  • the time-frequency resource includes a first sub-band set and a second sub-band set
  • the uplink scheduling signaling is further used to indicate that the uplink data sent by the first subband set is precoded by using the uplink precoding vector corresponding to the resource index;
  • the uplink scheduling signaling is further used to indicate that the uplink data sent on the second subband set is precoded by using an uplink precoding vector determined by a codebook.
  • the terminal receives the downlink configuration signaling sent by the access network device; or the access network device sends the downlink to the terminal Configuration signaling;
  • the downlink configuration signaling is used to configure a time-frequency resource of the downlink reference signal
  • the downlink configuration signaling is used to configure a time-frequency resource of the downlink reference signal and a sequence resource of the SRS;
  • the downlink configuration signaling is used to configure a time-frequency resource of the downlink reference signal, a sequence resource of the SRS, and a code resource of the SRS;
  • the downlink configuration signaling is used to configure a time-frequency resource of the downlink reference signal, the uplink SRS resource, and a sequence resource of the SRS;
  • the downlink configuration signaling is used to configure a time-frequency resource of the downlink reference signal, the uplink SRS resource, a sequence resource of the SRS, and a code resource of the SRS.
  • the time domain resource occupied by the downlink configuration command and the time domain resource occupied by the downlink reference signal are located in the same time unit, where the time unit is a slot or a subframe or a transmission time interval, the time unit including n OFDM symbols;
  • the downlink configuration signaling occupies 0th to X1th OFDM symbols of the time unit;
  • the downlink reference signal occupies X2 to X3 OFDM symbols of the time unit;
  • X1 1 or 2 or 3
  • X3 X2 or X2+1
  • the time domain resource occupied by the downlink configuration command, the time domain resource occupied by the downlink reference signal, and the time domain resource occupied by the SRS are located at the same time.
  • the time unit is a time slot or a subframe or a transmission time interval, and the time unit includes n OFDM symbols;
  • the downlink configuration signaling occupies 0th to X1th OFDM symbols of the time unit;
  • the downlink reference signal occupies X2 to X3 OFDM symbols of the time unit;
  • the SRS occupies X4 to X5 OFDM symbols of the time unit
  • X1 1 or 2 or 3
  • X3 X2 or X2+1
  • the time domain resource occupied by the downlink configuration command, the time domain resource occupied by the downlink reference signal, and the time domain resource occupied by the SRS is in the same time unit, and the time unit includes n symbols;
  • the downlink configuration signaling occupies 0th to X1th OFDM symbols of the time unit;
  • the downlink reference signal occupies X2 to X3 OFDM symbols of the time unit;
  • the SRS occupies X4 to X5 OFDM symbols of the time unit
  • the uplink scheduling signaling occupies the Y6th to Y7th symbols of the time unit
  • X1 1 or 2 or 3
  • X3 X2 or X2+1
  • the uplink SRS resource occupies m frequency domain resources, and the SRS is frequency hopped and transmitted in the m frequency domain resources.
  • the frequency domain bandwidth occupied by the time-frequency resource of the downlink reference signal is the same as the frequency domain bandwidth occupied by the uplink SRS resource.
  • the downlink configuration command is used to configure an OFDM symbol position and/or a physical resource corresponding to an OFDM resource corresponding to a time-frequency resource of the downlink reference signal.
  • Block PRB position
  • the OFDM symbol position includes: a start symbol index and a total symbol number occupied by the downlink reference signal, or the start symbol index and the end symbol index;
  • the PRB location includes: a PRB index in all transmission bandwidths occupied by the downlink reference signal, and the plurality of PRBs are non-contiguous PRBs or consecutive PRBs.
  • the downlink configuration command is used to configure the uplink SRS Orthogonal frequency division multiplexing (OFDM) symbol location and/or physical resource block PRB location corresponding to the resource;
  • OFDM Orthogonal frequency division multiplexing
  • the OFDM symbol position includes: a start symbol index and a total symbol number corresponding to the uplink SRS resource, or the start symbol index and the end symbol index;
  • the PRB location includes: a PRB index in the entire transmission bandwidth corresponding to the uplink SRS resource, where the SRS is hopped and transmitted in the transmission bandwidth, where the plurality of PRBs are non-contiguous PRBs or consecutive PRBs;
  • the transmission bandwidth occupied by the SRS in each of the OFDM symbols is the same or different.
  • a signaling receiving method includes:
  • scheduling authorization signaling sent by the access network device, where the scheduling authorization signaling includes first level control signaling and second level control signaling;
  • the first level control signaling is used to indicate common scheduling information in the M transmission modes
  • the second level control signaling is used to indicate specific scheduling information in the M transmission modes
  • M is an integer greater than or equal to 2.
  • a fourth aspect provides a signaling sending method, where the method includes:
  • scheduling authorization signaling sent by the access network device, where the scheduling authorization signaling includes first level control signaling and second level control signaling;
  • the first level control signaling is used to indicate common scheduling information in the M transmission modes
  • the second level control signaling is used to indicate specific scheduling information in the M transmission modes
  • M is an integer greater than or equal to 2.
  • the M transmission modes include at least two of the following transmission modes:
  • Single-antenna transmission mode transmit diversity transmission mode, codebook-based open-loop precoding method, codebook-based closed-loop precoding method, open-loop precoding based on channel reciprocity, and channel reciprocity-based Closed loop precoding method;
  • the codebook-based open-loop precoding method is a method for precoding the uplink data on different time-frequency resources by using a precoding vector in a codebook indicated by the access network device in turn; the code-based code
  • the closed-loop precoding method of the present invention is a method for precoding the uplink data on a specified time-frequency resource by using a precoding matrix in a codebook indicated by an access network device; the open loop pre-requisite based on channel reciprocity
  • the method of encoding is to pre-code the uplink data on different time-frequency resources by using the precoding vector obtained by the downlink channel measurement; the closed-loop pre-coding method based on channel reciprocity refers to adopting the measurement through the downlink channel.
  • the obtained precoding vector pre-codes the uplink data on the specified time-frequency resource.
  • the M transmission modes include at least two of the following transmission modes
  • Single antenna transmission mode transmit diversity transmission mode, open loop precoding mode, and closed loop precoding mode.
  • the first level control signaling includes:
  • First scheduling resource indication information indication information of a transmission mode of the second-level control signaling
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, the first MSC;
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, the first MSC, and the demodulation pilot port information
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, the first MSC, and the first-level precoding matrix indication information;
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, and the first-level precoding matrix indication information
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, the first MSC, the first-level precoding matrix indication information, the power control command, and the channel measurement trigger Information, SRS resource configuration information;
  • the first MCS is the MCS of the first transport block, or the MCS in the assumed first transmission mode.
  • the second level control signaling includes:
  • the second MCS the second level precoding matrix indication information
  • the second MCS the second-stage precoding matrix indication information, and the demodulation pilot port information
  • the second MCS the second level precoding matrix indication information, and the second scheduling resource indication information
  • the second MCS is the MCS of the second transport block, or the differential MCS according to the transmission mode of the second-level control signaling with respect to the MCS of the first transmission mode; the second scheduling resource
  • the indication information is used to perform resource indication within a time-frequency resource range indicated by the first scheduling resource indication information.
  • the method further includes:
  • the terminal determines scheduling information of the data channel according to the first level control signaling and the second level control signaling.
  • the determining, by the terminal, the scheduling information of the data channel according to the first level control signaling and the second level control signaling including:
  • the first level precoding matrix indication information is corresponding to a wideband
  • the second level precoding matrix indication information is a corresponding subband
  • the first level precoding matrix indication information is before receiving the first precoding matrix indication information in the next one of the first level control signaling Continuously valid indication information; the second-level precoding matrix indication information is indication information that the scheduling is valid.
  • the first level control signaling and the second level control signaling respectively occupy different OFDM symbols in the same time unit;
  • the first level control signaling occupies the first n OFDM symbols in the time unit, and n is a positive integer;
  • the second level control signaling occupies a data scheduling bandwidth in the time unit.
  • the first level control signaling and the second level control signaling respectively occupy different time units.
  • the two first-level control signaling respectively occupy an ith time unit and an i+jth time unit, and at least two of the second The time unit occupied by the level control signaling is the i+kth time unit, and 0 ⁇ k ⁇ j, i, j, k are integers.
  • the second level control signaling is used to determine jointly with the latest one of the first level control signaling sent before the second level control signaling Scheduling information of the data channel.
  • the first level control signal is further used to indicate a time-frequency position of the second level control signaling.
  • the at least one transmission mode of the M transmission modes only corresponds to the first level control signaling.
  • the embodiment of the present application provides a data sending apparatus, where the uplink data sending includes at least one unit, where the at least one unit is used to implement the foregoing first aspect or any one of the possible aspects of the first aspect.
  • the method of sending data is not limited to:
  • an embodiment of the present application provides a data receiving apparatus, where the data receiving apparatus includes at least one unit, where the at least one unit is used to implement the foregoing second aspect or any of the possible aspects of the second aspect.
  • Uplink data receiving method is used to implement the foregoing second aspect or any of the possible aspects of the second aspect.
  • the embodiment of the present application provides a signaling receiving apparatus, where the signaling receiving apparatus includes at least one unit, where the at least one unit is used to implement any one of the foregoing third or third aspects.
  • the signaling receiving method provided.
  • the embodiment of the present application provides a signaling sending apparatus, where the signaling sending apparatus includes at least one unit, where the at least one unit is used to implement any one of the foregoing fourth aspect or the fourth aspect.
  • the embodiment of the present application provides a terminal, where the terminal includes a processor and a memory, where the processor is configured to store one or more instructions, where the instruction is instructed to be executed by the processor,
  • the processor is configured to implement the data transmission method provided in any one of the foregoing first aspect or the first aspect; or the processor is configured to implement any one of the foregoing third aspect or the third aspect
  • the signaling receiving method provided in the method.
  • an embodiment of the present application provides an access network device, where the access network device includes a processor and a memory, where the processor is configured to store one or more instructions, where the instruction is indicated by the Executing by the processor, the processor is configured to implement the data sending method provided in any one of the foregoing second aspect or the second aspect, or the processor is used to implement the fourth aspect or the fourth aspect.
  • a signaling method provided in any of the possible designs.
  • the embodiment of the present application provides a computer readable storage medium, where the data transmission provided by the design of the first aspect or the first aspect is implemented.
  • the executable program of the method is implemented.
  • the embodiment of the present application provides a computer readable storage medium, where the uplink data receiving provided by the foregoing second aspect or the second aspect may be implemented.
  • the executable program of the method is not limited to the foregoing second aspect or the second aspect.
  • the embodiment of the present application provides a computer readable storage medium, where the signaling provided by the foregoing third aspect or the third aspect is implemented. Receiving method Executable program.
  • the embodiment of the present application provides a computer readable storage medium, where the signaling provided by the design of any of the foregoing fourth aspect or the fourth aspect is provided.
  • the executable program of the method is provided.
  • the embodiment of the present application provides an uplink data sending system, where the uplink data sending system includes: a terminal and an access network device, where the terminal includes any one of the foregoing fifth aspect or the fifth aspect.
  • the data transmitting device provided by the design; the access network device comprising the data receiving device provided by any of the possible aspects of the sixth aspect or the sixth aspect described above.
  • the embodiment of the present application provides an uplink data sending system, where the uplink data sending system includes: a terminal and an access network device, where the terminal is any one of the foregoing ninth aspect or the ninth aspect. Designing the provided terminal; the access network device is an access network device as provided by any of the above-described tenth or tenth aspects.
  • the embodiment of the present application provides a signaling sending system, where the uplink data sending system includes: a terminal and an access network device, where the terminal includes any one of the seventh aspect or the seventh aspect,
  • the signaling receiving device provided by the design is provided;
  • the access network device comprises a signaling transmitting device provided by a possible design of any of the above eighth aspect or the eighth aspect.
  • the embodiment of the present application provides a signaling sending system, where the uplink data sending system includes: a terminal and an access network device, where the terminal is any one of the foregoing ninth aspect or the ninth aspect. Designing the provided terminal; the access network device is an access network device as provided by any of the above-described tenth or tenth aspects.
  • the uplink precoding vector indicated by the access network device to the terminal is a part of the precoding vector in the plurality of uplink precoding vectors obtained by the terminal to measure the downlink reference signal; and the access network device is determined from the preset codebook.
  • the selected precoding matrix is not necessarily suitable for the actual situation of the uplink channel of the terminal, resulting in poor transmission performance of the uplink data;
  • the precoding vector adopted by the terminal is a precoding vector obtained by the terminal measuring the downlink reference signal. Based on the principle of channel reciprocity, the precoding vector is more suitable for the actual situation of the uplink channel of the terminal, and can improve the transmission performance of the uplink data.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of an access network device according to an embodiment of the present application.
  • FIG. 5 is a flowchart of a method for sending data according to another embodiment of the present application.
  • 6A is a schematic diagram of a principle of performing an open-loop precoding method on data according to an embodiment of the present application
  • 6B is a schematic diagram of a principle of performing an open-loop precoding method on data according to another embodiment of the present application.
  • 6C is a schematic diagram of a principle of performing closed-loop precoding on data according to another embodiment of the present application.
  • FIG. 8 is a schematic diagram of resource occupation of a downlink configuration signaling and a downlink reference signal in the same time unit according to an embodiment of the present application;
  • FIG. 9 is a schematic diagram of resource occupation of a downlink configuration signaling and a downlink reference signal in the same time unit according to an embodiment of the present application.
  • FIG. 10 is a flowchart of a method for signaling sending according to an embodiment of the present application.
  • FIG. 11 is a flowchart of a method for signaling sending according to another embodiment of the present application.
  • FIG. 12A is a schematic diagram of timing occupancy of first-level control signaling and second-level control signaling provided by an embodiment of the present application.
  • 12B is a schematic diagram of a principle of a precoding matrix used by a first level control signaling and a second level control signaling to determine data in a data channel according to an embodiment of the present application;
  • FIG. 13 is a block diagram of a data transmitting apparatus according to an embodiment of the present application.
  • FIG. 14 is a block diagram of a data receiving apparatus according to an embodiment of the present application.
  • a “module” as referred to herein refers to a program or instruction stored in a memory that is capable of implementing certain functions;
  • "unit” as referred to herein refers to a functional structure that is logically divided, the “unit” may be Pure hardware implementation, or a combination of hardware and software.
  • Multiple as referred to herein means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic structural diagram of a communication system 100 according to an embodiment of the present application.
  • the communication system 100 can be an LTE system or a 5G system.
  • the communication system 100 includes at least one terminal 120 and at least one access network device 140.
  • the terminal 120 may be a Personal Communication Service (PCS) telephone, a cordless telephone, a Session Initiation Protocol (SIP) telephone, a Wireless Local Loop (WLL) station, or a Personal Digital Assistant (PDA). And other equipment.
  • the terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, and a remote. Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • the terminal 120 communicates with one or more access network devices 140 via a Radio Access Network (RAN).
  • RAN Radio Access Network
  • the access network device 140 can be a base station as a router between the terminal 120 and the rest of the access network, and the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, also It may be a base station (NodeB) in WCDMA, and may also be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE, which is not limited in this application.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • e-NodeB evolutional Node B
  • FIG. 2 is a block diagram showing the structure of a terminal 120 provided by an embodiment of the present application.
  • the terminal 120 includes a processor 21, a transceiver 22, and a memory 23.
  • the processor 21 includes one or more processing cores, and the processor 21 executes various functional applications and information processing by running software programs and modules.
  • the transceiver 22 includes a receiver Rx and a transmitter Tx.
  • the transceiver 22 can also be implemented as a communication chip.
  • the communication chip can include a receiving module, a transmitting module, a modem module, and the like, for modulating and demodulating information. The information is received or transmitted via a wireless signal.
  • the transceiver 22 has a plurality of antennas capable of multi-antenna transmission or multi-antenna reception through multiple antennas.
  • the memory 23 is connected to the processor 21.
  • the memory 23 can be used to store software programs as well as modules.
  • the memory can store an operating system 24, at least one of the functions described by the application module 25.
  • the application module 25 includes at least a receiving module 251 for receiving information, a processing module 252 for processing information, and a transmitting module 253 for transmitting information.
  • the receiving module 251 is configured to receive the downlink reference signal sent by the access network device, and the processing module 252 is configured to measure the downlink reference signal to obtain a plurality of uplink precoding vectors, and the sending module 253 is configured to detect the reference signals in the uplink.
  • the SRS is transmitted on the resource to the access network device, and the SRS sent on the different uplink SRS resources is precoded by using different uplink precoding vectors.
  • the receiving module 251 is configured to send the access network device.
  • the uplink scheduling signaling is used to indicate a resource index of the at least one uplink SRS resource; the processing module 252 is configured to pre-code the uplink data according to the uplink precoding vector corresponding to the resource index, and the sending module 253 is configured to: The precoded uplink data is sent to the access network device.
  • the processor 21 is configured to execute each module in the application module 25 to implement the steps required by the terminal in the various embodiments shown in FIG. 4 or FIG. 5 or FIG. 10 or FIG.
  • the memory 23 is a computer readable storage medium that can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable and programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable and programmable Read Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk
  • Disk Disk
  • the memory 23 stores at least one instruction
  • the processor 21 implements the steps corresponding to the terminal 120 in the following method embodiment when the at least one instruction is executed.
  • the structure of the terminal 120 shown in FIG. 2 does not constitute a limitation on the access network device, and may include more or less components or combinations of components, or different components. Assembly of parts.
  • FIG. 3 is a block diagram showing the structure of an access network device 140 according to an embodiment of the present application.
  • the access network device includes a processor 31, a transceiver 32, and a memory 33.
  • the processor 31 includes one or more processing cores, and the processor 31 executes various functional applications and information processing by running software programs and modules.
  • the transceiver 32 includes a receiver Rx and a transmitter Tx, and the transceiver 32 can also be implemented as a communication chip for communication.
  • the chip may include a receiving module, a transmitting module, a modem module, and the like for modulating and demodulating information, and receiving or transmitting the information through a wireless signal.
  • the transceiver 32 has a plurality of antennas capable of multi-antenna transmission or multi-antenna reception through multiple antennas.
  • the memory 33 is connected to the processor 31.
  • Memory 33 can be used to store software programs as well as modules.
  • the memory can store an operating system 34, an application module 35 corresponding to at least one function.
  • the application module 35 includes at least a receiving module 351 for receiving information, a processing module 352 for processing information, and a transmitting module 353 for transmitting information.
  • the sending module 353 is configured to send a downlink reference signal to the terminal, and the receiving module 351 is configured to receive the SRS sent by the terminal on the at least one uplink SRS resource, and the SRS sent by the different uplink SRS resources is pre-prepared by using different uplink precoding vectors.
  • the uplink precoding vector is obtained by the terminal according to the downlink reference signal.
  • the sending module 353 is configured to send uplink scheduling signaling to the terminal, where the uplink scheduling signaling is used to indicate a resource index of the at least one uplink SRS resource, and the receiving module 351. And configured to receive uplink data sent by the terminal, where the uplink data is pre-coded by using an uplink precoding vector corresponding to the resource index.
  • the processor 31 is configured to execute each module in the application module 35 to implement the steps required by the access network device in the various embodiments shown in FIG. 4 or FIG. 5 or FIG. 10 or FIG.
  • memory 33 is a computer readable medium that can be implemented by any type of volatile or nonvolatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable and programmable only Read Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable and programmable only Read Memory
  • EPROM Erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk
  • Disk Disk
  • At least one instruction is stored in the memory 33, and the processor 31 implements the steps corresponding to the access network device 140 in the following method embodiments when the at least one instruction is executed.
  • the structure of the access network device 140 illustrated in FIG. 3 does not constitute a limitation on the access network device, and may include more or less components or combinations of certain components than illustrated. Or different parts arrangement.
  • FIG. 4 is a flowchart of a data sending method provided by an embodiment of the present application. This embodiment is exemplified by applying the data transmission method to the communication system shown in FIG. 1. The method includes:
  • Step 401 The access network device sends a downlink reference signal to the terminal.
  • the downlink reference signal is a Cell-specific Reference Signal (CRS), or a Demodulation Reference Signal (DM-RS), or a channel state information reference signal (Channel- Slate Information Reference Signals, CSI-RS), or other reference signals that can be used for downlink channel estimation.
  • CRS Cell-specific Reference Signal
  • DM-RS Demodulation Reference Signal
  • CSI-RS Channel state information reference signal
  • other reference signals that can be used for downlink channel estimation.
  • Step 402 The terminal receives a downlink reference signal sent by the access network device.
  • Step 403 The terminal performs measurement on the downlink reference signal to obtain a plurality of uplink precoding vectors.
  • Step 404 The terminal sends an SRS to the access network device on the uplink SRS resources, and the SRS sent on the different uplink SRS resources is precoded by using different uplink precoding vectors.
  • Step 405 The access network device receives the SRS sent by the terminal on several uplink SRS resources.
  • Step 406 The access network device sends uplink scheduling signaling to the terminal, where the uplink scheduling signaling is used to indicate a resource index of the at least one uplink SRS resource.
  • Step 407 The terminal receives uplink scheduling signaling sent by the access network device.
  • Step 408 The terminal performs precoding on the uplink data according to the uplink precoding vector corresponding to the resource index.
  • the uplink precoding vector corresponding to the resource index is a part of a plurality of uplink precoding vectors obtained by the terminal to measure the downlink reference signal.
  • the uplink data is data transmitted on a Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • Step 409 The terminal sends the pre-coded uplink data to the access network device.
  • Step 410 The access network device receives uplink data sent by the terminal.
  • the uplink precoding vector indicated by the access network device to the terminal is a part of the precoding vector in the plurality of uplink precoding vectors obtained by the terminal measuring the downlink reference signal. Solving the problem that the precoding matrix selected by the access network device from the preset codebook is not suitable for the actual situation of the uplink channel of the terminal, resulting in poor transmission performance of the uplink data; reaching the precoding vector adopted by the terminal It is a precoding vector obtained by the terminal measuring the downlink reference signal. Based on the channel reciprocity principle, the precoding vector is more suitable for the actual situation of the uplink channel of the terminal, and can improve the transmission performance of the uplink data.
  • FIG. 5 is a flowchart of a data sending method provided by another embodiment of the present application. This embodiment is exemplified by applying the data transmission method to the communication system shown in FIG. 1. The method includes:
  • Step 501 The access network device sends downlink configuration signaling to the terminal.
  • the downlink configuration signaling is used to configure the time-frequency resource of the downlink reference signal, and the time-frequency resource is a time-frequency resource used for transmitting the downlink reference signal.
  • the time domain resource includes: an Orthogonal Frequency-Division Multiplexing (OFDM) symbol index occupied by the downlink reference signal, and the frequency domain resources occupied by the downlink reference signal include : Physical Resource Block (PRB) index.
  • OFDM Orthogonal Frequency-Division Multiplexing
  • PRB Physical Resource Block
  • the downlink configuration command is further configured to configure an uplink SRS resource, where the uplink SRS resource is a resource used for transmitting the SRS.
  • the uplink SRS resource is a resource used for transmitting the SRS.
  • the time domain resource includes: an OFDM symbol index occupied by the SRS
  • the frequency domain resource includes: a PRB index occupied by the SRS.
  • the downlink configuration instruction is further configured to: configure a sequence resource, or a sequence resource and a code resource, required to generate the SRS.
  • the sequence resource is a base sequence number of the Zadoff-Chu sequence;
  • the code resource is a cyclic shift number of the Zadoff-Chu sequence, and/or the code resource is an index of the orthogonal spreading code of the Zadoff-Chu sequence.
  • Step 502 The terminal receives downlink configuration signaling sent by the access network device.
  • the terminal determines the time-frequency resource of the downlink reference signal according to the downlink configuration signaling.
  • the terminal further determines the uplink SRS resource according to the downlink configuration signaling.
  • the uplink SRS resources are at least two, and different uplink SRS resources correspond to different uplink ports.
  • the terminal further determines, according to the downlink configuration signaling, a sequence resource used to generate the SRS, or a sequence resource and a code resource used to generate the SRS.
  • Step 503 The access network device sends a downlink reference signal to the terminal.
  • the access network device sends the downlink reference signal on the time-frequency resource configured by the downlink configuration signaling.
  • the downlink reference signal is a CRS, or a DMRS, or a CSI-RS, or other reference signal that can be used for downlink channel estimation.
  • Step 504 The terminal receives a downlink reference signal sent by the access network device.
  • the terminal receives the downlink reference signal on the time-frequency resource configured by the downlink configuration signaling.
  • Step 505 The terminal measures the downlink reference signal to obtain a plurality of uplink precoding vectors.
  • the terminal measures the received signal matrix of the downlink reference signal on the time-frequency resource.
  • the received signal matrix of the downlink reference signal is YN*M
  • the dimension of YN*M is N rows and M columns
  • N is the number of receiving antennas of the terminal
  • M is the number of transmitting antennas of the access network equipment
  • H is the downlink channel of the access network device to the terminal
  • S is the signal information sent by the access network device to the terminal
  • I is the interference information.
  • the interference information refers to the sum of interference and noise.
  • S is represented by a signal whose power is normalized to one.
  • the terminal calculates a channel estimation matrix of the downlink channel according to the received signal matrix according to a preset channel estimation algorithm
  • the terminal performs channel estimation on the downlink reference signal according to a predetermined channel estimation algorithm, and calculates a channel estimation matrix of the downlink channel.
  • the predetermined channel estimation algorithm includes, but is not limited to, at least one of Least-Square channel estimation, Minimum Mean Square Error (MMSE) channel estimation, and Wiener channel estimation.
  • MMSE Minimum Mean Square Error
  • the terminal transposes the channel estimation matrix of the downlink channel to obtain a channel estimation matrix of the uplink channel;
  • the uplink and downlink transmissions use the same frequency bandwidth.
  • the fading of the uplink channel and the downlink channel can be considered to be substantially the same, that is, the uplink and downlink channels have channel reciprocity.
  • the terminal obtains a channel estimation matrix of the uplink channel. Among them, it is the transposition of the channel estimation matrix of the downlink channel.
  • the terminal performs singular value decomposition (SVD) on the channel estimation matrix of the uplink channel to obtain a precoding matrix.
  • SVD singular value decomposition
  • the terminal pair obtains SVD decomposition (or other matrix decomposition method);
  • VH is a conjugate transposed matrix of V.
  • the dimension of V is a matrix of N rows and r columns. M, N, and r are all positive integers.
  • V is a precoding matrix
  • each column matrix element in V is a precoding vector.
  • the dimension of each precoding vector is N, that is, the number of transmitting antennas of the terminal.
  • Step 506 The terminal sends an SRS to the access network device on the uplink SRS resources, and the SRS sent on the different uplink SRS resources is precoded by using different uplink precoding vectors.
  • the terminal generates an SRS according to the sequence resource and/or the code resource indicated by the downlink configuration signaling.
  • the terminal generates an SRS according to the sequence resources configured in the downlink configuration signaling.
  • the terminal generates an SRS according to the sequence resource and the code resource configured in the downlink configuration signaling. That is, the terminal determines the Zadoff-Chu sequence according to the base sequence number in the sequence resource, and cyclically shifts the Zadoff-Chu sequence according to the cyclic shift value indicated by the code resource to obtain an SRS.
  • the terminal obtains 4 SRSs by different cyclic shifts of the same Zadoff-Chu sequence.
  • the terminal determines a plurality of uplink SRS resources according to the downlink configuration signaling, and different uplink SRS resources correspond to different uplink ports.
  • the above four SRS resources are taken as an example, and the terminal determines four uplink SRS resources according to downlink configuration signaling, first.
  • the uplink SRS resource corresponds to the uplink port port 0
  • the second uplink SRS resource corresponds to the uplink port port 1
  • the third uplink SRS resource corresponds to the uplink port port 2
  • the fourth uplink SRS resource corresponds to the uplink port port 3.
  • the terminal precodes the SRS using the precoding vector, and the SRS on different uplink SRS resources uses different precoding vectors for precoding.
  • the terminal selects 4 precoding vectors from all r precoding vectors of the precoding matrix V. Precoding the first SRS on the first uplink SRS resource using the first precoding vector, precoding the second SRS on the second uplink SRS resource using the second precoding vector, using the third The precoding vector precodes the third SRS on the third uplink SRS resource, and precodes the fourth SRS on the fourth uplink SRS resource using the fourth precoding vector.
  • the terminal sends the pre-coded SRS on several uplink SRS resources.
  • the terminal sends the first SRS on the first uplink SRS resource (uplink port port 0), the second SRS on the second uplink SRS resource (uplink port port 1), and the third uplink SRS resource on the uplink (port 1)
  • the third SRS is transmitted on the port port 2
  • the fourth SRS is transmitted on the fourth uplink SRS resource (uplink port port3).
  • Step 507 The access network device receives an SRS sent by the terminal on several uplink SRS resources.
  • the access network device receives the first SRS on the first uplink SRS resource (uplink port port 0), the second SRS on the second uplink SRS resource (uplink port port 1), and the third uplink SRS on the third uplink SRS resource (uplink port 1)
  • the third SRS is received on the resource (uplink port 2); the fourth SRS is received on the fourth uplink SRS resource (uplink port port 3).
  • Step 508 The access network device sends uplink scheduling signaling to the terminal, where the uplink scheduling signaling is used to indicate a resource index of the at least one uplink SRS resource.
  • the step includes the following steps:
  • the access network device selects a resource index of a part of the uplink SRS resource according to a predetermined policy.
  • the access network device determines an SRS with an optimal signal quality according to the received signal quality of the SRS, and selects a resource index of the uplink SRS resource corresponding to the SRS with the optimal signal quality. For example, the SRS on the uplink port port 0 has the optimal signal quality, and the uplink port port 0 is selected as the resource index.
  • the access network device determines, according to the signal quality of the received SRS, an SRS that is suitable for paired transmission with other terminals, and selects a resource index of the uplink SRS resource corresponding to the SRS that has better cooperative transmission performance with other terminals.
  • the SRS on the uplink port 1 is suitable for paired transmission with other terminals, and the uplink port port1 is selected as the resource index.
  • the access network device determines an SRS that is ordered by the first n uplink ports, and selects a resource index of the uplink SRS resource corresponding to the SRS of the first n uplink ports.
  • the resource index of the uplink SRS resource determined by the access network device is a resource index of some or all of the uplink SRS resources used by the terminal when transmitting the SRS.
  • the resource index of the uplink SRS resource is represented by a port index of the uplink port; or the resource index of the uplink SRS resource is represented by a transmission rank.
  • the transmission rank and the port index There is a predetermined correspondence between the transmission rank and the port index.
  • the correspondence between the transmission rank and the port index of the uplink port is schematically shown in the following Table 1.
  • the resource index of the uplink SRS resource may also be represented in other manners, which is not limited in this embodiment.
  • the access network device generates uplink scheduling signaling, where the uplink scheduling signaling is used to indicate a resource index of at least one uplink SRS resource.
  • Uplink scheduling signaling is also called Up Link grant (UL grant).
  • UL grant Up Link grant
  • the uplink scheduling signaling is used to configure the time-frequency resource of the PUSCH, that is, the time-frequency resource for transmitting the uplink data, to the terminal.
  • the uplink scheduling signaling is used to indicate the time-frequency resource of the PUSCH.
  • the uplink scheduling signaling also carries a resource index of at least one uplink SRS resource.
  • the resource index is used to instruct the terminal to precode the uplink data by using an uplink precoding vector corresponding to the resource index.
  • the access network device sends uplink scheduling signaling to the terminal.
  • Step 509 The terminal receives uplink scheduling signaling sent by the access network device.
  • the terminal determines, according to the uplink scheduling signaling, a time-frequency resource of the PUSCH, that is, a time-frequency resource used for transmitting the uplink data.
  • Step 510 The terminal performs precoding on the uplink data according to the uplink precoding vector corresponding to the resource index.
  • the uplink precoding vector corresponding to the resource index is a part of a plurality of uplink precoding vectors obtained by the terminal to measure the downlink reference signal.
  • the step includes the following steps:
  • the terminal determines the resource index of the uplink SRS resource according to the uplink scheduling signaling, and the uplink SRS resource corresponding to the resource index is all or part of the uplink SRS resource used by the terminal in step 506.
  • the terminal determines, according to the resource index of the uplink SRS resource, an uplink precoding vector corresponding to the resource index.
  • the terminal determines an uplink precoding vector corresponding to the port index; when the resource index uses the transmission rank representation, the terminal according to the predetermined correspondence relationship (schematically as shown in Table 1) Determining an uplink precoding vector corresponding to the transmission rank.
  • the terminal pre-codes the uplink data according to the uplink precoding vector corresponding to the resource index.
  • the terminal pre-codes the uplink data according to the first uplink precoding vector corresponding to port 0.
  • Step 511 The terminal sends the pre-coded uplink data to the access network device.
  • the terminal sends the pre-coded uplink data to the access network device according to the time-frequency resource indicated by the uplink scheduling signaling.
  • Step 512 The access network device receives the uplink data sent by the terminal.
  • the access network device receives the uplink data sent by the terminal on the time-frequency resource indicated by the uplink scheduling signaling.
  • the uplink precoding vector indicated by the access network device to the terminal is a part of the precoding vector in the plurality of uplink precoding vectors obtained by the terminal measuring the downlink reference signal. Solving the problem that the precoding matrix selected by the access network device from the preset codebook is not suitable for the actual situation of the uplink channel of the terminal, resulting in poor transmission performance of the uplink data; reaching the precoding vector adopted by the terminal It is a precoding vector obtained by the terminal measuring the downlink reference signal. Based on the channel reciprocity principle, the precoding vector is more suitable for the actual situation of the uplink channel of the terminal, and can improve the transmission performance of the uplink data.
  • the uplink scheduling signaling is further used to indicate a Modulation and Coding Scheme (MCS) adopted by the uplink data.
  • MCS Modulation and Coding Scheme
  • the MCS is an MCS of uplink data precoded by using an uplink precoding vector corresponding to a resource index.
  • the foregoing step 510 includes the following steps:
  • the terminal determines the resource index and the MCS of the uplink SRS resource according to the uplink scheduling signaling, and the uplink SRS resource corresponding to the resource index is all or a part of the uplink SRS resource used by the terminal in step 506.
  • the terminal performs channel coding and modulation on the uplink data according to the MCS;
  • the terminal determines, according to the resource index of the uplink SRS resource, an uplink precoding vector corresponding to the resource index.
  • the terminal determines an uplink precoding vector corresponding to the port index; when the resource index uses the transmission rank representation, the terminal according to the predetermined correspondence relationship (schematically as shown in Table 1) Determining an uplink precoding vector corresponding to the transmission rank.
  • the terminal pre-encodes the uplink data according to the uplink precoding vector corresponding to the resource index.
  • the uplink data is the uplink data after channel coding and modulation in step 2.
  • the terminal pre-codes the uplink data according to the uplink precoding vector corresponding to the resource index.
  • the terminal pre-codes the uplink data according to the first uplink precoding vector corresponding to port 0.
  • the uplink scheduling signaling is further used to indicate a precoding mode adopted by the uplink data, and the precoding mode is an open loop precoding mode or a closed loop precoding mode.
  • the open-loop precoding method refers to a manner in which the terminal uses different uplink precoding vectors to precode the uplink data on different time-frequency resources, where different time-frequency resources include different physical resource blocks or different sub-carriers. Or different OFDM symbols.
  • the time-frequency resource for transmitting uplink data occupies 0 to 13 total 14 OFDM symbols in the time domain T, and occupies PRB pair 0 and PRB pair 1 in the frequency domain F.
  • the terminal uses four different uplink precoding vectors to precode the uplink data on different subcarriers.
  • the 0th, 4th, and 8th subcarriers in the PRB pair 0 and the PRB pair 1 are precoded using the first uplink precoding vector V0 corresponding to the uplink port port 0; for the PRB pair 0 and the PRB pair The first, fifth, and ninth subcarriers of 1 are precoded using the second uplink precoding vector V1 corresponding to the uplink port port 1; for the second and sixth of the PRB pair 0 and the PRB pair 1 And the 10th subcarrier is precoded using the third uplink precoding vector V2 corresponding to the uplink port port 2; the uplink port port 3 is used for the 3rd, 7th, and 11th subcarriers in the PRB pair 0 and the PRB pair 1 The corresponding fourth uplink precoding vector V3 is precoded.
  • the time-frequency resource for transmitting uplink data occupies 0 to 13 total 14 OFDM symbols in the time domain T, and occupies PRB pair 0 and PRB pair 1 in the frequency domain F.
  • the terminal alternately precodes the uplink data on different OFDM symbols by using four different uplink precoding vectors.
  • the 0th, 4th, 8th, and 12th OFDM symbols are precoded using the first uplink precoding vector V0 corresponding to the uplink port port 0; for the first, fifth, and ninth And the 13th symbol is precoded using the second uplink precoding vector V1 corresponding to the uplink port port 1; and the third uplink precoding corresponding to the uplink port port 2 is used for the 2nd, 6th, and 10th OFDM symbols
  • the vector V2 is precoded; the third, seventh, and eleventh OFDM symbols are precoded using the fourth uplink precoding vector V3 corresponding to the uplink port port 3.
  • the closed-loop precoding mode refers to a method in which a terminal uses the same uplink precoding vector to precode uplink data on a specified time-frequency resource.
  • the time-frequency resource for transmitting uplink data occupies 0 to 13 total 14 OFDM symbols in the time domain T, and occupies PRB pair0 and PRB pair 1 in the frequency domain F.
  • the terminal precodes the uplink data on the entire time-frequency resource by using the first uplink precoding vector V0 corresponding to the uplink port port 0.
  • the uplink scheduling signaling is further used to indicate a time-frequency resource used by the uplink data, that is, a time-frequency resource of the PUSCH.
  • the time-frequency resource used by the uplink data includes at least two sub-bands, and the uplink data sent on each sub-band is pre-coded by using an uplink precoding vector corresponding to the independent resource index.
  • the time-frequency resources used for the uplink data include sub-band 1 and sub-band 2, sub-band 1 includes 2 PRBs, and sub-band 2 includes 3 PRBs.
  • the first uplink precoding vector V0 corresponding to the uplink port port 0 is used for precoding; and for the uplink data on the subband 2, the second uplink precoding vector V1 corresponding to the uplink port port 1 is used. Precoded.
  • the uplink data sent on the bandwidth of the uplink data time-frequency resource is pre-coded by using an uplink precoding vector corresponding to the same source index.
  • the uplink scheduling signaling is further used to indicate a time-frequency resource used by the uplink data, where the time-frequency resource includes a first sub-band set and a second sub-band set.
  • the uplink scheduling signaling is further used to indicate that the uplink data sent by the first subband set is precoded by using an uplink precoding vector corresponding to the resource index.
  • the first subband set includes at least one subband, and each subband includes at least one PRB, that is, the first subband set is precoded by using an uplink precoding vector corresponding to the resource index provided by the embodiment of FIG. 4 or FIG.
  • the uplink scheduling signaling is further used to indicate that the uplink data sent on the second subband set is precoded by using an uplink precoding vector determined by the codebook.
  • the second set of subbands includes at least one subband, each subband comprising at least one PRB, that is, precoding for the second set of subbands using a conventional codebook determined uplink precoding vector.
  • the uplink precoding vector determined based on the codebook is determined by the access network device.
  • the time domain resource occupied by the downlink configuration command and the time domain resource occupied by the downlink reference signal are located in the same time unit, and the time unit is a time slot or a subframe or a transmission.
  • the time interval, the time unit includes n OFDM symbols (abbreviated as symbols). Referring to FIG. 7 schematically, FIG. 7 is exemplified by taking one time unit including 7 OFDM symbols as an example (may be other numbers).
  • the downlink configuration signaling DCI occupies 0th to X1th OFDM symbols of the time unit;
  • the downlink reference signal DL RS occupies X2 to X3 OFDM symbols of the time unit;
  • X1 1 or 2 or 3
  • X3 X2 or X2+1
  • the downlink configuration signaling DCI occupies the 0th symbol of the time unit in the time domain T
  • the downlink reference signal DL RS occupies the first symbol of the time unit in the time domain T.
  • the downlink reference signal DL RS occupies a continuous or non-contiguous frequency domain bandwidth in the frequency domain F.
  • the time domain resource and the downlink reference signal occupied by the downlink configuration command are located in the same time unit, which is a time slot or a subframe or a transmission time interval, the time unit including n OFDM symbols.
  • FIG. 8 schematically, FIG. 8 is exemplified by taking one time unit including 7 OFDM symbols as an example (may be other numbers).
  • the downlink configuration signaling DCI occupies 0th to X1th OFDM symbols of the time unit;
  • the downlink reference signal DL RS occupies X2 to X3 OFDM symbols of the time unit;
  • the SRS occupies X4 to X5 OFDM symbols of the time unit
  • X1 1 or 2 or 3
  • X3 X2 or X2+1
  • the downlink configuration signaling DCI occupies the 0th symbol of the time unit in the time domain T
  • the downlink reference signal DL RS occupies the first symbol of the time unit in the time domain T
  • SRS The third to fifth symbols of the time unit are occupied in the time domain T.
  • the downlink reference signal DL RS occupies a continuous or non-contiguous frequency domain bandwidth in the frequency domain F.
  • the uplink SRS resource configured by the downlink configuration command occupies multiple frequency domain resources
  • the SRS is hopped and transmitted in the m frequency domain resources. That is, the SRS is transmitted using different frequency domain bandwidths in different OFDM symbols.
  • the frequency domain bandwidth occupied by the time-frequency resource of the downlink reference signal is the same as the frequency domain bandwidth occupied by the uplink SRS resource.
  • the time domain resource occupied by the downlink configuration command and the time domain resource occupied by the downlink reference signal are located in the same time unit, and the time unit is a time slot or a subframe or a transmission. Time interval, the time unit includes n OFDM symbols. Referring to FIG. 9 in schematic form, FIG. 9 is exemplified by taking one time unit including 7 OFDM symbols as an example (may be other numbers).
  • the downlink configuration signaling DCI occupies 0th to X1th OFDM symbols of the time unit;
  • the downlink reference signal DL RS occupies X2 to X3 OFDM symbols of the time unit;
  • the SRS (or the uplink SRS resource) occupies X4 to X5 OFDM symbols of the time unit;
  • the uplink scheduling signaling UL grant occupies the Y6th to Y7th symbols of the time unit;
  • X1 1 or 2 or 3
  • X3 X2 or X2+1
  • the downlink configuration signaling DCI occupies the 0th symbol of the time unit in the time domain T
  • the downlink reference signal DL RS occupies the first symbol of the time unit in the time domain T
  • SRS The third to fifth symbols of the time unit are occupied in the time domain T
  • the uplink scheduling signaling UL grant occupies the sixth symbol of the time unit.
  • the uplink SRS resource configured by the downlink configuration command occupies multiple frequency domain resources
  • the SRS is hopped and transmitted in the m frequency domain resources. That is, the SRS is transmitted using different frequency domain bandwidths in different OFDM symbols.
  • the frequency domain bandwidth occupied by the time-frequency resource of the downlink reference signal is the same as the frequency domain bandwidth occupied by the uplink SRS resource.
  • the data sending method provided in this embodiment enables the terminal to send uplink data to the access network device quickly and in a high performance in a time domain unit.
  • the steps performed by the terminal may be separately implemented as a data sending method on the terminal side; the steps performed by the access network device may be separately implemented. Become An uplink data receiving method on the side of the access network device.
  • the uplink scheduling signaling is sent using two levels of control signaling. To illustrate this part of the details, please refer to the following examples.
  • FIG. 10 is a flowchart of a signaling sending method provided by an embodiment of the present application. This embodiment is exemplified by applying the signaling method to the communication system shown in FIG. 1. The method can also be implemented in combination with the embodiment shown in FIG. 4 or 5.
  • the signaling sending method includes:
  • Step 1001 The access network device sends scheduling authorization signaling to the terminal, where the scheduling authorization signaling includes first level control signaling and second level control signaling.
  • the first level control signaling is used to indicate common scheduling information in the M transmission modes
  • the second level control signaling is used to indicate specific scheduling information in the M transmission modes
  • M is an integer greater than or equal to 2.
  • Step 1002 The terminal receives scheduling authorization signaling sent by the access network device, where the scheduling authorization signaling includes first level control signaling and second level control signaling.
  • the scheduling grant signaling is a downlink scheduling grant or an uplink scheduling grant (UL grant).
  • the signaling sending method provided in this embodiment sends scheduling authorization signaling to the terminal by using two-level control signaling, and the common scheduling information in the M transmission modes is concentrated in the first-level control signaling.
  • the transmission resource overhead of reducing scheduling authorization signaling can be reduced, the control efficiency of the access network device to the terminal can be improved, and the terminal can be quickly switched in different transmission modes.
  • the scheduling grant command is an uplink scheduling grant.
  • the M transmission modes include at least two of the following transmission modes:
  • the open-loop precoding method based on the codebook is to pre-code the uplink data on different time-frequency resources by using the precoding vector in the codebook indicated by the access network device in turn;
  • the method of encoding is to precode the uplink data on the specified time-frequency resource by using a precoding matrix in the codebook indicated by the access network device; the open-loop precoding method based on channel reciprocity is adopted in turn.
  • the method of precoding the uplink data on different time-frequency resources by using the pre-coding vector measured by the downlink channel (or the downlink reference signal); the closed-loop pre-coding method based on channel reciprocity refers to adopting the downlink channel (or Said downlink reference signal)
  • the measured precoding vector is used to precode the uplink data on the specified time-frequency resource.
  • the scheduling grant instruction is a downlink scheduling grant.
  • the M transmission modes include at least two of the following transmission modes:
  • the method for pre-encoding the open-loop precoding is to pre-code the downlink data on different time-frequency resources by using the precoding vector in the codebook indicated by the access network device in turn; the closed-loop pre-coding method is to use the access network.
  • the precoding matrix in the codebook indicated by the device precodes the downlink data on the specified time-frequency resource.
  • the first level control signaling includes:
  • the first scheduling resource indication information and the indication information of the transmission mode of the second level control signaling are provided.
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, the first MSC;
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, the first MSC, and the demodulation pilot port information
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, the first MSC, and the first-level precoding matrix indication information;
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, and the first-level precoding matrix indication information
  • the first scheduling resource indication information the indication information of the transmission mode of the second-level control signaling, the first MSC, the first-level precoding matrix indication information, the power control command, the channel measurement trigger information, and the resource configuration of the uplink SRS resource information;
  • the first MCS is the MCS of the first transport block, or the MCS in the assumed first transmission mode.
  • the first scheduling resource indication information is used to indicate a time-frequency resource of the data channel; the indication information of the second-level control signaling transmission mode is used to indicate one of the M types of transmission modes; and the demodulation pilot port information is used for And indicating at least one of a time-frequency resource of a pilot used for demodulating data, a port index of a demodulation pilot, and a spreading code information of a demodulation pilot; a first-level precoding matrix indicator information (Precoding-Matrix Indicator, PMI) And a first level precoding matrix, where the first level precoding matrix includes at least one precoding vector; the power control command is used to indicate a related parameter of the uplink sending power to the terminal; and the channel measurement trigger information is used to trigger the terminal to the downlink reference. The signal is measured and the channel measurement is fed back.
  • Precoding-Matrix Indicator PMI
  • the second level of control signaling includes:
  • the second MCS the second level precoding matrix indication information
  • the second MCS the second level precoding matrix indication information
  • the second MCS, the second level precoding matrix indication information, and the pilot port information is demodulated
  • the second MCS the second-level precoding matrix indication information, and the second scheduling resource indication information
  • the second MCS is the MCS of the second transport block, or the differential MCS according to the transmission mode of the second-level control signaling relative to the MCS of the first transmission mode; the second scheduling resource indication information is used in the first scheduling
  • the resource indication is performed in the time-frequency resource range indicated by the resource indication information.
  • the first scheduling resource indication information is used to indicate that 10 PRBs are indicated as the transmission resource of the data channel from the 100 PRBs, and the second scheduling resource indication information is used. Used to indicate a finer 3 PRBs from 10 PRBs.
  • the first level precoding matrix information is used to determine a first level precoding matrix W1 in the dual codebook structure; the second level precoding matrix information is used to determine a second level precoding matrix in the dual codebook structure W2.
  • the first level precoding matrix in the dual codebook structure has the following form
  • the second level precoding matrix in the dual codebook structure has the following form:
  • the above method further includes step 903, as shown in FIG.
  • Step 1003 The terminal determines scheduling information of the data channel according to the first level control signaling and the second level control signaling.
  • the data channel in this embodiment is generalized, that is, a channel for transmitting data, and also refers to data itself transmitted on the channel.
  • a PUSCH can be understood as a PUSCH channel, and can also be understood as an uplink data transmitted on a PUSCH.
  • a Physical Downlink Shared Channel (PDSCH) can be understood as a PDSCH channel or a PDSCH channel. Downstream data.
  • the scheduling information of the data channel includes but is not limited to: time-frequency resources of the data channel (or time-frequency resource locations), precoding vectors of data transmitted on each time-frequency resource, and MCS of data transmitted on each time-frequency resource. and many more.
  • step 1003 includes the following steps:
  • the terminal determines the time-frequency resource of the data channel according to the first scheduling resource information; or the terminal determines the time-frequency resource of the data channel according to the first scheduling resource information and the second scheduling resource information.
  • step 1003 includes the following steps:
  • the terminal determines the first precoding matrix W1 in the dual codebook structure according to the first level precoding matrix indication information in the first level control signaling;
  • the terminal determines the second precoding matrix W2 in the dual codebook structure according to the second level precoding matrix indication information in the second level control signaling;
  • the terminal determines a precoding matrix used by the data transmitted on the data channel according to the first precoding matrix W1 and the second precoding matrix W2.
  • the terminal multiplies the first precoding matrix W1 and the second precoding matrix W2 to obtain a precoding matrix used by the data transmitted on the data channel.
  • the first level precoding matrix indication information is information that continues to be valid before receiving the first precoding matrix indication information in the next first level control signaling; the second level precoding matrix indication information is this time. Schedule valid indications.
  • the first level control signaling and the second level control signaling respectively occupy different OFDM symbols in the same time unit; the first level control signaling occupies the first n OFDM symbols in the time unit, where n is a positive integer
  • the second level of control signaling occupies the data scheduling bandwidth in the time unit.
  • the first level control signaling and the second level control signaling respectively occupy different time units.
  • the second level control signaling is used to determine the scheduling information of the data channel jointly with the latest first level control signaling sent before the second level control signaling.
  • the two first-level control signaling respectively occupy the i-th time unit and the i+th-th time unit
  • the time unit occupied by the at least two second-level control signaling is the i+kth time unit , 0 ⁇ k ⁇ j, i, j, k are integers.
  • the first level control signaling DCI 11 occupies the first time unit
  • the second level control signaling DCI 21 occupies the second time unit and the second level control signaling.
  • the DCI 22 occupies the third time unit
  • the second-level control signaling DCI 23 occupies the fourth time unit
  • the second-level control signaling DCI 24 occupies the fifth time unit
  • the first-level control signaling DCI 12 occupies the sixth time unit
  • first level control signaling DCI 11 and the first level control signaling DCI 12, there are four second level control signaling DCI 21, DCI 22, DCI 23, DCI 24.
  • the first level precoding matrix indicated by the first level precoding matrix indication information in the first level control signaling DCI11 is W11
  • the second level precoding matrix indication information in the second level control signaling DCI21 is indicated by the second level precoding matrix indication information.
  • the second precoding matrix is W21
  • the second level precoding matrix indicated by the second level precoding matrix indication information in the second level control signaling DCI22 is W22
  • the second level precoding matrix indicated by the matrix indication information is W23
  • the second level precoding matrix indicated by the second level precoding matrix indication information in the second level control signaling DCI24 is W24
  • the first level control signaling is in the DCI12.
  • the first level precoding matrix indicated by the first level precoding matrix indication information is W12.
  • the first level precoding matrix indicated by the first level precoding matrix indication information is corresponding to a wideband
  • the second level precoding matrix indicated by the second level precoding matrix indication information is a corresponding subband. That is, the first level precoding matrix indication information is a precoding matrix applicable to the entire frequency domain bandwidth of the first level control signaling; the second level precoding matrix indication information is only applicable to the second level control instruction.
  • the precoding matrix of the subband is a precoding matrix applicable to the entire frequency domain bandwidth of the first level control signaling; the second level precoding matrix indication information is only applicable to the second level control instruction.
  • the second level control signaling is used to determine scheduling information of the data channel in association with the latest first level control signaling sent before the second level control signaling. That is, the terminal uses the second scheduling resource information in the second-level control signaling to jointly determine the time-frequency of the data channel by using the first scheduling resource information in the latest first-level control signaling sent before the second-level control signaling. Resources.
  • Figure 12B shows a schematic diagram of frequency domain bandwidth of time-frequency resources of a data channel.
  • the frequency domain bandwidth occupied by the time-frequency resource indicated by the first scheduling resource information in the first-level control signaling DCI11 is the bandwidth F1; the time-frequency resource indicated by the second scheduling resource information in the second-level control signaling DCI 21
  • the frequency domain bandwidth occupied by the time-frequency resource indicated by the second scheduling resource information in the sub-band F11 and the second-level control signaling DCI 22 is the sub-band F12 and the second-level control signaling DCI23.
  • the frequency domain bandwidth occupied by the time-frequency resource indicated by the second scheduling resource information is the sub-band F13, and the frequency-domain bandwidth occupied by the time-frequency resource indicated by the second scheduling resource information in the second-level control signaling DCI 24 is the sub-band F14.
  • the sub-band F11, the sub-band F12, the sub-band F13, and the sub-band F14 are all part of the broadband F1.
  • Each subband includes at least one PRB, and each subband has the same or different bandwidth.
  • the first precoding matrix W11 is applicable to the entire wideband F1
  • the second precoding matrix W21 is applied to the subband F11
  • the second precoding matrix W22 is applied to the subband F12
  • the second precoding matrix W23 is applicable to The sub-band F13 and the second-stage precoding matrix W24 are applied to the sub-band F14.
  • the terminal uses the second level precoding matrix indication information and the second level control signaling in the second level control signaling
  • the first second level precoding matrix indication information in the most recent first level control signaling previously transmitted jointly determines the precoding matrix (or precoding vector) used by the data.
  • the terminal uses the precoding matrix W11*W21 obtained by multiplying the product of W11 and W21; when determining the precoding matrix used by the terminal in determining the data in the subband F12, a precoding matrix W11*W22 obtained by multiplying the product of W11 and W22; a precoding matrix W11*W23 obtained by using a product of W11 and W23 when the terminal determines a precoding matrix used for data in the subband F13; In determining the precoding matrix used for the data in the subband F14, the precoding matrix W11*W24 obtained by multiplying the product of W11 and W24 is used.
  • the first-stage precoding matrix indication information is information that continues to be valid before receiving the first precoding matrix indication information in the next first level control signaling; the second level precoding matrix indication The information is the indication that the scheduling is valid.
  • the first level control signaling and the second level control signaling respectively occupy different OFDM symbols in the same time unit; the first level control signaling occupies the former in the time unit n OFDM symbols, n is a positive integer; the second level of control signaling occupies the data scheduling bandwidth in the time unit.
  • the first level control signaling is also used to indicate the time-frequency location of the second level control signaling.
  • the terminal receives the time-frequency position of the first-level control signaling by using the UE blind detection technology, and receives the second-level control signaling by using the time-frequency position of the second-level control signaling indicated by the first-level control signaling.
  • At least one transmission mode of the M transmission modes only corresponds to the first level control signaling, and does not require the second level control signaling, for example, a single antenna transmission mode.
  • the terminal stops detecting the second-level control signaling.
  • steps performed by the terminal in FIG. 10 or FIG. 11 may be separately implemented as a signaling receiving method on the terminal side; the steps performed by the access network device in FIG. 10 or FIG. 11 may be separately implemented. Signaling method on the side of the network access device.
  • FIG. 13 is a block diagram of a data transmitting apparatus provided by an embodiment of the present application.
  • the message transmitting device can be implemented as a whole or a part of the terminal through a dedicated hardware circuit or a combination of hardware and software.
  • the message transmitting apparatus includes a receiving unit 1320, a processing unit 1320, and a transmitting unit 1340.
  • the receiving unit 1320 is configured to implement the receiving functions of the foregoing steps 402, 407, 502, and 504, and other implicit steps of receiving information by the terminal.
  • the processing unit 1320 is configured to implement the functions of the foregoing steps 403, 408, 505, and 510, and other implicit steps or data for processing information by the terminal.
  • the sending unit 1340 is configured to implement the sending functions of the foregoing steps 404, 409, 506, 509, and 511, and other implicit steps of sending information by the terminal.
  • receiving unit 1320 may be implemented by a receiver, or may be implemented by a processor in cooperation with a receiver; the processing unit 1340 may be implemented by a processor, or the processor may execute a program instruction in a memory to implement;
  • the above sending unit 1360 can be implemented by a transmitter, or the processor can be implemented with a transmitter.
  • the data transmitting apparatus may also implement the steps of the embodiment shown in FIG. 10 or FIG. It is receiving downlink data.
  • FIG. 14 is a block diagram of a data receiving apparatus according to another embodiment of the present application.
  • the message sending device may be implemented as a whole or part of the access network terminal or the first access network device by a dedicated hardware circuit or a combination of hardware and software.
  • the message transmitting apparatus includes a transmitting unit 1420, a processing unit 1440, and a receiving unit 1440.
  • the sending unit 1420 is configured to implement the sending functions in the foregoing steps 401, 406, 501, 503, and 508, and other implicit steps of sending information by the access network terminal.
  • the processing unit 1440 is configured to implement the processing function of the foregoing step 408 and other implicit steps of processing information by the access network device.
  • the receiving unit 1440 is configured to implement the receiving functions of the foregoing steps 405, 410, 507, and 512, and other implicit steps of receiving information by the access network device.
  • sending unit 1420 may be implemented by a transmitter, or the processor may be implemented by using a transmitter; the processing unit 1440 may be implemented by a processor, or the processor may execute a program instruction in a memory; Unit 1460 can be implemented by receiver Rx or by a processor in conjunction with a receiver.
  • the data receiving apparatus may also transmit downlink data when implementing the steps of the embodiment shown in FIG. 10 or FIG.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本申请公开了一种数据发送方法、信令发送方法、装置及系统，属于通信领域。所述方法包括：终端接收接入网设备发送的下行参考信号；终端对下行参考信号进行测量，得到若干个上行预编码向量；终端在若干个上行SRS资源上向接入网设备发送SRS，不同的上行SRS资源上发送的SRS采用不同的上行预编码向量进行预编码；终端接收接入网设备发送的上行调度信令，上行调度信令用于指示至少一个上行SRS资源的资源索引；终端根据资源索引所对应的上行预编码向量对上行数据进行预编码；将预编码后的上行数据发送给接入网设备。本申请能够提高上行数据的传输性能。

Description

数据发送方法、信令发送方法、装置及系统
本申请要求于2016年08月12日提交中国专利局、申请号为201610821803.2、发明名称为“数据发送方法、信令发送方法、装置及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，特别涉及一种数据发送方法、信令发送方法、装置及系统。
背景技术
在长期演进(Long Term Evolution，LTE)的版本10开始，支持基于终端的多个发射天线的上行传输。上行多天线传输通过天线预编码，能够使得物理上行共享信道(英文：Physical Uplink Shared Channel，简称：PUSCH)支持多达4层空间传输，以提高上行数据传输的可达数据传输速率和上行频谱效率。
在实现上行多天线传输时，用户设备(User Equipment)向演进型基站(evolutional Node B，eNB或e-NodeB)发送探测参考信号(英文：Sounding Reference Signal，简称：SRS)；eNB根据SRS确定出合适的上行传输秩和预编码矩阵，该预编码矩阵是eNB基于码本来确定的，码本是预先定义的有限个数的预编码矩阵集合；eNB在上行调度授权中向UE发送该上行传输秩和预编码矩阵；UE基于eNB反馈的上行传输秩对上行数据进行层映射，对层映射后的上行数据使用预编码矩阵中对应的预编码向量进行预编码后发送。
由于eNB从预设的码本中选择预编码矩阵，该预编码矩阵并不一定适合UE的上行信道的实际情况，导致上行数据的传输性能较差。
发明内容
为了解决背景技术的问题，本申请实施例提供了一种数据发送方法、信令发送方法、装置及系统。所述技术方案如下：
第一方面，提供了一种数据发送方法，所述方法包括：
终端接收接入网设备发送的下行参考信号；
所述终端对所述下行参考信号进行测量，得到若干个上行预编码向量；
所述终端在若干个上行探测参考信号SRS资源上向所述接入网设备发送SRS，不同的所述上行SRS资源上发送的所述SRS采用不同的所述上行预编码向量进行预编码；
所述终端接收所述接入网设备发送的上行调度信令，所述上行调度信令用于指示至少一个所述上行SRS资源的资源索引；
所述终端根据所述资源索引所对应的所述上行预编码向量对上行数据进行预编码；将预编码后的所述上行数据发送给所述接入网设备。
第二方面，提供了一种上行数据接收方法，所述方法包括：
接入网设备向终端发送下行参考信号；
所述接入网设备接收所述终端在至少一个上行探测参考信号SRS资源上发送的SRS，不同所述上行SRS资源的所述SRS采用不同的上行预编码向量进行预编码，所述上行预编码向量是所述终端根据所述下行参考信号测量得到的；
所述接入网设备向所述终端发送上行调度信令，所述上行调度信令用于指示至少一个所述上行SRS资源的资源索引；
所述接入网设备接收所述终端发送的上行数据，所述上行数据是采用所述资源索引所对应的所述上行预编码向量进行预编码后的数据。
在第一方面或第二方面的一种可能的设计中，不同的所述上行SRS资源对应不同的SRS端口。
在第一方面或第二方面的一种可能的设计中，所述上行调度信令还用于指示所述上行数据采用的编码调制方式MCS，所述MCS是采用所述资源索引所对应的所述上行预编码向量进行预编码的所述上行数据的MCS。
在第一方面或第二方面的一种可能的设计中，所述上行调度信令还用于指示所述上行数据采用的预编码方式，所述预编码方式是开环预编码方式或闭环预编码方式。
在第一方面或第二方面的一种可能的设计中，所述开环预编码方式是指轮流采用不同的所述上行预编码向量对不同的时频资源上的所述上行数据进行预编码的方式；
其中，所述不同的时频资源包括不同的物理资源块或不同的子载波或不同的正交频分复用技术OFDM符号。
在第一方面或第二方面的一种可能的设计中，所述闭环预编码方式是指采用相同的所述上行预编码向量对指定时频资源上的所述上行数据进行预编码的方式。
在第一方面或第二方面的一种可能的设计中，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
所述时频资源包括至少两个子带，每个所述子带上发送的所述上行数据采用各自独立的所述资源索引所对应的所述上行预编码向量进行预编码；
或，
所述时频资源的带宽上发送的所述上行数据采用相同的所述资源索引所对应的所述上行预编码向量进行预编码。
在第一方面或第二方面的一种可能的设计中，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
所述时频资源包括第一子带集合和第二子带集合；
所述上行调度信令还用于指示所述第一子带集合上发送的所述上行数据采用所述资源索引所对应的所述上行预编码向量进行预编码；
所述上行调度信令还用于指示所述第二子带集合上发送的所述上行数据采用基于码本所确定的上行预编码向量进行预编码。
在第一方面或第二方面的一种可能的设计中，所述终端接收所述接入网设备发送的下行配置信令；或者说，所述接入网设备向所述终端发送所述下行配置信令；
所述下行配置信令用于配置所述下行参考信号的时频资源；
或，所述下行配置信令用于配置所述下行参考信号的时频资源和所述SRS的序列资源；
或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述SRS的序列资源和所述SRS的码资源；
或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源和所述SRS的序列资源；
或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源、所述SRS的序列资源和所述SRS的码资源。
在第一方面或第二方面的一种可能的设计中，所述下行配置指令占用的时域资源和所述下行参考信号占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
其中，X1＝1或2或3，X3＝X2或X2+1，n-1＞X3≥X2≥1。
在第一方面或第二方面的一种可能的设计中，所述下行配置指令占用的时域资源、所述下行参考信号占用的时域资源和所述SRS占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
所述SRS占用所述时间单元的X4～X5个OFDM符号；
其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X5≥X4＞X3+1。
在第一方面或第二方面的一种可能的设计中，所述下行配置指令所占用的时域资源、所述下行参考信号所占用的时域资源、所述SRS占用的时域资源和所述上行调度信令在相同的时间单元，所述时间单元包括n个符号；
所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
所述SRS占用所述时间单元的X4～X5个OFDM符号；
所述上行调度信令占用所述时间单元的第Y6至Y7个符号；
其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X7≥X6＞X5≥X4＞X3+1。
在第一方面或第二方面的一种可能的设计中，所述上行SRS资源占用m个频域资源，所述SRS在m个所述频域资源中跳频传输。
在第一方面或第二方面的一种可能的设计中，所述下行参考信号的时频资源所占的频域带宽和所述上行SRS资源所占的频域带宽相同。
在第一方面或第二方面的一种可能的设计中，所述下行配置指令用于配置所述下行参考信号的时频资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
所述OFDM符号位置包括：所述下行参考信号占用的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
所述PRB位置包括：所述下行参考信号占用的全部传输带宽中的PRB索引，所述若干个PRB是非连续的PRB或者连续的PRB。
在第一方面或第二方面的一种可能的设计中，所述下行配置指令用于配置所述上行SRS 资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
所述OFDM符号位置包括：所述上行SRS资源对应的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
所述PRB位置包括：所述上行SRS资源对应的全部传输带宽中的PRB索引，所述SRS在所述传输带宽中跳频传输，所述若干个PRB是非连续的PRB或者连续的PRB；
其中，所述SRS在每个所述OFDM符号中所占用的所述传输带宽相同或不同。
第三方面，提供了一种信令接收方法，所述方法包括：
终端接收接入网设备发送的调度授权信令，所述调度授权信令包括第一级控制信令和第二级控制信令；
所述第一级控制信令用于指示M种传输方式中的公共调度信息；
所述第二级控制信令用于指示所述M种传输方式中的特定调度信息；
其中，M为大于等于2的整数。
第四方面，提供了一种信令发送方法，所述方法包括：
终端接收接入网设备发送的调度授权信令，所述调度授权信令包括第一级控制信令和第二级控制信令；
所述第一级控制信令用于指示M种传输方式中的公共调度信息；
所述第二级控制信令用于指示所述M种传输方式中的特定调度信息；
其中，M为大于等于2的整数。
在第三方面或第四方面的一种可能的设计中，所述M种传输方式包括如下传输方式中的至少两种：
单天线传输方式、发射分集传输方式、基于码本的开环预编码的方式、基于码本的闭环预编码的方式、基于信道互易性的开环预编码的方式和基于信道互易性的闭环预编码的方式；
其中，所述基于码本的开环预编码的方式是轮流采用接入网设备指示的码本中的预编码向量对不同的时频资源上的上行数据进行预编码的方式；所述基于码本的闭环预编码的方式是采用接入网设备指示的码本中的预编码矩阵对指定时频资源上的所述上行数据进行预编码的方式；所述基于信道互易性的开环预编码的方式是轮流采用通过下行信道测量得到的预编码向量对不同的时频资源上的上行数据进行预编码的方式；所述基于信道互易性的闭环预编码方式是指采用通过下行信道测量得到的预编码向量对指定时频资源上的所述上行数据进行预编码的方式。
在第三方面或第四方面的一种可能的设计中，所述M种传输方式包括如下传输方式中的至少两种；
单天线传输方式、发射分集传输方式、开环预编码的方式、闭环预编码的方式。
在第三方面或第四方面的一种可能的设计中，所述第一级控制信令包括：
第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息；
或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、第一MSC；
或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、第一MSC，解调导频端口信息；
或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、所述第一MSC、第一级预编码矩阵指示信息；
或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、第一级预编码矩阵指示信息；
或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、所述第一MSC、所述第一级预编码矩阵指示信息、功率控制命令、信道测量触发信息、SRS的资源配置信息；
其中，所述第一MCS是第一个传输块的MCS，或者，按照假设的第一传输方式下的MCS。
在第三方面或第四方面的一种可能的设计中，所述第二级控制信令包括：
第二级预编码矩阵指示信息；
或，第二MCS、第二级预编码矩阵指示信息；
或，第二MCS、第二级预编码矩阵指示信息、所述解调导频端口信息；
或，所述第二MCS、所述第二级预编码矩阵指示信息；
或，所述第二MCS、所述第二级预编码矩阵指示信息、第二调度资源指示信息；
其中，所述第二MCS是第二个传输块的MCS，或者，按照所述第二级控制信令的传输方式相对于所述第一传输方式的MCS的差分MCS；所述第二调度资源指示信息用于在所述第一调度资源指示信息所指示的时频资源范围内进行资源指示。
在第三方面或第四方面的一种可能的设计中，所述方法还包括：
所述终端根据所述第一级控制信令和所述第二级控制信令确定数据信道的调度信息。
在第三方面或第四方面的一种可能的设计中，所述终端根据所述第一级控制信令和所述第二级控制信令确定数据信道的调度信息，包括：
根据所述第一级控制信令中的所述第一级预编码矩阵指示信息确定双码本结构中的第一预编码矩阵W1；
根据所述第二级控制信令中的所述第二级预编码矩阵指示信息确定所述双码本结构中的第二预编码矩阵W2；
根据所述第一预编码矩阵W1和所述第二预编码矩阵W2确定所述数据信道所传输的数据所使用的预编码矩阵。
在第三方面或第四方面的一种可能的设计中，所述第一级预编码矩阵指示信息是对应宽带的，所述第二级预编码矩阵指示信息是对应子带的。
在第三方面或第四方面的一种可能的设计中，所述第一级预编码矩阵指示信息是在接收到下一个所述第一级控制信令中的第一预编码矩阵指示信息之前持续有效的指示信息；所述第二级预编码矩阵指示信息是本次调度有效的指示信息。
在第三方面或第四方面的一种可能的设计中，所述第一级控制信令和所述第二级控制信令分别占用同一时间单元中的不同OFDM符号；
所述第一级控制信令占用所述时间单元中的前n个OFDM符号，n为正整数；
所述第二级控制信令占用所述时间单元中的数据调度带宽。
在第三方面或第四方面的一种可能的设计中，所述第一级控制信令和所述第二级控制信令分别占用不同时间单元。
在第三方面或第四方面的一种可能的设计中，两个所述第一级控制信令分别占用第i个时间单元和第i+j个时间单元，存在至少两个所述第二级控制信令占用的时间单元为第i+k个时间单元，0≤k≤j，i，j，k均为整数。
在第三方面或第四方面的一种可能的设计中，所述第二级控制信令用于与所述第二级控制信令之前发送的最近一个所述第一级控制信令联合确定所述数据信道的调度信息。
在第三方面或第四方面的一种可能的设计中，所述第一级控制信号还用于指示所述第二级控制信令的时频位置。
在第三方面或第四方面的一种可能的设计中，所述M种传输方式中存在至少一种传输方式仅对应所述第一级控制信令。
第五方面，本申请实施例提供了一种数据发送装置，该上行数据发送包括至少一个单元，该至少一个单元用于实现上述第一方面或第一方面中任意一种可能的设计中所提供的数据发送方法。
第六方面，本申请实施例提供了一种数据接收装置，该数据接收装置包括至少一个单元，该至少一个单元用于实现上述第二方面或第二方面中任意一种可能的设计中所提供的上行数据接收方法。
第七方面，本申请实施例提供了一种信令接收装置，该信令接收装置包括至少一个单元，该至少一个单元用于实现上述第三方面或第三方面中任意一种可能的设计中所提供的信令接收方法。
第八方面，本申请实施例提供了一种信令发送装置，该信令发送装置包括至少一个单元，该至少一个单元用于实现上述第四方面或第四方面中任意一种可能的设计中所提供的信令发送方法。
第九方面，本申请实施例提供了一种终端，该终端包括处理器和存储器；所述处理器用于存储一个或一个以上的指令，所述指令被指示为由所述处理器执行，所述处理器用于实现上述第一方面或第一方面中任意一种可能的设计中所提供的数据发送方法；或者，所述处理器用于实现上述第三方面或第三方面中任意一种可能的设计中所提供的信令接收方法。
第十方面，本申请实施例提供了一种接入网设备，该接入网设备包括处理器和存储器；所述处理器用于存储一个或一个以上的指令，所述指令被指示为由所述处理器执行，所述处理器用于实现上述第二方面或第二方面中任意一种可能的设计中所提供的数据发送方法，或者，所述处理器用于实现上述第四方面或第四方面中任意一种可能的设计中所提供的信令发送方法。
第十一方面，本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质中存储有用于实现上述第一方面或第一方面中任意一种可能的设计所提供的数据发送方法的可执行程序。
第十二方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质中存储有用于实现上述第二方面或第二方面中任意一种可能的设计所提供的上行数据接收方法的可执行程序。
第十三方面，本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质中存储有用于实现上述第三方面或第三方面中任意一种可能的设计所提供的信令接收方法 的可执行程序。
第十四方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质中存储有用于实现上述第四方面或第四方面中任意一种可能的设计所提供的信令发送方法的可执行程序。
第十五方面，本申请实施例提供一种上行数据发送系统，该上行数据发送系统包括:终端和接入网设备，所述终端包括如上述第五方面或第五方面中任意一种可能的设计所提供的数据发送装置；所述接入网设备包括如上述第六方面或第六方面中任意一种可能的设计所提供的数据接收装置。
第十六方面，本申请实施例提供一种上行数据发送系统，该上行数据发送系统包括:终端和接入网设备，所述终端是如上述第九方面或第九方面中任意一种可能的设计所提供的终端；所述接入网设备是如上述第十方面或第十方面中任意一种可能的设计所提供的接入网设备。
第十七方面，本申请实施例提供一种信令发送系统，该上行数据发送系统包括:终端和接入网设备，所述终端包括如上述第七方面或第七方面中任意一种可能的设计所提供的信令接收装置；所述接入网设备包括如上述第八方面或第八方面中任意一种可能的设计所提供的信令发送装置。
第十八方面，本申请实施例提供一种信令发送系统，该上行数据发送系统包括:终端和接入网设备，所述终端是如上述第九方面或第九方面中任意一种可能的设计所提供的终端；所述接入网设备是如上述第十方面或第十方面中任意一种可能的设计所提供的接入网设备。
本申请实施例提供的技术方案带来的有益效果是：
接入网设备向终端指示的上行预编码向量，是终端对下行参考信号进行测量所得到的若干个上行预编码向量中的一部分预编码向量；解决了接入网设备从预设的码本中选择的预编码矩阵并不一定适合终端的上行信道的实际情况，导致上行数据的传输性能较差的问题；达到了终端采用的预编码向量是终端对下行参考信号进行测量所得到的预编码向量，基于信道互易性原理，该预编码向量更适合终端的上行信道的实际情况，能够提高上行数据的传输性能。
附图说明
图1是本申请一个实施例提供的通信系统的结构示意图；
图2是本申请一个实施例提供的终端的结构示意图；
图3是本申请一个实施例提供的接入网设备的结构示意图；
图4是本申请一个实施例提供的数据发送方法的方法流程图；
图5是本申请另一个实施例提供的数据发送方法的方法流程图；
图6A是本申请一个实施例提供的对数据进行开环预编码方式的原理示意图；
图6B是本申请另一个实施例提供的对数据进行开环预编码方式的原理示意图；
图6C是本申请另一个实施例提供的对数据进行闭环预编码方式的原理示意图；
图7是本申请一个实施例提供的下行配置信令和下行参考信号在同一个时间单元中的 资源占用示意图；
图8是本申请一个实施例提供的下行配置信令和下行参考信号在同一个时间单元中的资源占用示意图；
图9是本申请一个实施例提供的下行配置信令和下行参考信号在同一个时间单元中的资源占用示意图；
图10是本申请一个实施例提供的信令发送方法的方法流程图；
图11是本申请另一个实施例提供的信令发送方法的方法流程图；
图12A是本申请一个实施例提供的第一级控制信令和第二级控制信令的时序占用示意图；
图12B是本申请一个实施例提供的第一级控制信令和第二级控制信令联合确定数据信道中数据所采用的预编码矩阵的原理示意图；
图13是本申请一个实施例提供的数据发送装置的框图；
图14是本申请一个实施例提供的数据接收装置的框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
在本文提及的“模块”是指存储在存储器中的能够实现某些功能的程序或指令；在本文中提及的“单元”是指按照逻辑划分的功能性结构，该“单元”可以由纯硬件实现，或者，软硬件的结合实现。
在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
图1示出了本申请一个实施例提供的通信系统100的结构示意图。该通信系统100可以是LTE系统或5G系统。该通信系统100包括：至少一个终端120和至少一个接入网设备140。
终端120可以是个人通信业务(PCS，Personal Communication Service)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(WLL，Wireless Local Loop)站、个人数字助理(PDA，Personal Digital Assistant)等设备。终端也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、用户设备(User Device)、或用户装备(User Equipment)。
终端120经无线接入网(Radio Access Network，RAN)与一个或多个接入网设备140进行通信。
接入网设备140可以是基站，作为终端120与接入网的其余部分之间的路由器，接入网的其余部分可包括网际协议(Internet Protocol，IP)网络。基站还可协调对空中接口的属性管理。例如，基站可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也 可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(eNB或e-NodeB，evolutional Node B)，本申请对此不作限定。下面实施例以接入网设备140是eNB来举例说明。
图2示出了本申请一个实施例提供的终端120的结构方框图。该终端120包括：处理器21、收发器22、存储器23。
处理器21包括一个或者一个以上处理核心，处理器21通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
收发器22包括接收机Rx和发射机Tx，收发器22还可以实现成为一通信芯片，通信芯片中可以包括接收模块、发射模块和调制解调模块等，用于对信息进行调制解调，并通过无线信号接收或发送该信息。可选地，该收发器22具有多根天线，能够通过多个天线实现多天线发送或多天线接收。
存储器23与处理器21相连。
存储器23可用于存储软件程序以及模块。存储器可存储操作系统24、至少一个功能所述的应用程序模块25。
应用程序模块25至少包括：用于接收信息的接收模块251，用于处理信息的处理模块252和用于发送信息的发送模块253。
接收模块251，用于接收接入网设备发送的下行参考信号；处理模块252，用于对下行参考信号进行测量，得到若干个上行预编码向量；发送模块253在若干个上行探测参考信号(英文：Sounding Reference Signal，简称：SRS)资源上向接入网设备发送SRS，不同的上行SRS资源上发送的SRS采用不同的上行预编码向量进行预编码；接收模块251用于接收接入网设备发送的上行调度信令，上行调度信令用于指示至少一个上行SRS资源的资源索引；处理模块252，用于根据资源索引所对应的上行预编码向量对上行数据进行预编码，发送模块253用于将预编码后的上行数据发送给接入网设备。
可选地，处理器21用于执行应用程序模块25中的各个模块，实现如下图4或图5或图10或图11所示各个实施例中由终端所需要执行的步骤。
此外，存储器23是一种计算机可读存储介质，可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随时存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。存储器23中存储有至少一个指令，处理器21在执行该至少一个指令时实现如下方法实施例中终端120对应的步骤。
本领域技术人员可以理解，图2中所示出的终端120的结构并不构成对接入网设备的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
图3示出了本申请一个实施例提供的接入网设备140的结构方框图。该接入网设备包括：处理器31、收发器32、存储器33。
处理器31包括一个或者一个以上处理核心，处理器31通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
收发器32包括接收机Rx和发射机Tx，收发器32还可以实现成为一通信芯片，通信 芯片中可以包括接收模块、发射模块和调制解调模块等，用于对信息进行调制解调，并通过无线信号接收或发送该信息。可选地，该收发器32具有多根天线，能够通过多个天线实现多天线发送或多天线接收。
存储器33与处理器31相连。
存储器33可用于存储软件程序以及模块。存储器可存储操作系统34、至少一个功能所对应的应用程序模块35。
应用程序模块35至少包括：用于接收信息的接收模块351，用于处理信息的处理模块352和用于发送信息的发送模块353。
发送模块353，用于向终端发送下行参考信号；接收模块351，用于接收所述终端在至少一个上行SRS资源上发送的SRS，不同上行SRS资源发送的SRS采用不同的上行预编码向量进行预编码，上行预编码向量是终端根据下行参考信号测量得到的；发送模块353，用于向终端发送上行调度信令，上行调度信令用于指示至少一个上行SRS资源的资源索引；接收模块351，用于接收所述终端发送的上行数据，所述上行数据是采用所述资源索引所对应额上行预编码向量进行预编码后的数据。
可选地，处理器31用于执行应用程序模块35中的各个模块，实现如下图4或图5或图10或图11所示各个实施例中由接入网设备所需要执行的步骤。
此外，存储器33是一种计算机可读介质，可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随时存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。存储器33中存储有至少一个指令，处理器31在执行该至少一个指令时实现如下方法实施例中接入网设备140对应的步骤。
本领域技术人员可以理解，图3中所示出的接入网设备140的结构并不构成对接入网设备的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
图4示出了本申请一个实施例提供的数据发送方法的流程图。本实施例以该数据发送方法应用于图1所示的通信系统中来举例说明。该方法包括：
步骤401，接入网设备向终端发送下行参考信号；
可选地，该下行参考信号是小区特定的参考信号(Cell-specific Reference Signal,CRS)，或者，解调参考信号(Demodulation Reference Signal,DM-RS)，或者，信道状态信息参考信号(Channel-Slate Information Reference Signals,CSI-RS)，或者其它可用于下行信道估计的参考信号。
步骤402，终端接收接入网设备发送的下行参考信号；
步骤403，终端对下行参考信号进行测量，得到若干个上行预编码向量；
步骤404，终端在若干个上行SRS资源上向接入网设备发送SRS，不同的上行SRS资源上发送的SRS采用不同的上行预编码向量进行预编码；
步骤405，接入网设备接收终端在若干个上行SRS资源上发送的SRS；
步骤406，接入网设备向终端发送上行调度信令，该上行调度信令用于指示至少一个上行SRS资源的资源索引；
步骤407，终端接收接入网设备发送的上行调度信令；
步骤408，终端根据资源索引所对应的上行预编码向量对上行数据进行预编码；
可选地，该资源索引所对应的上行预编码向量，是终端对下行参考信号进行测量所得到的若干个上行预编码向量中的一部分。
可选地，上行数据是在物理上行共享信道(Physical Uplink Shared Channel，PUSCH)上传输的数据。
步骤409，终端将预编码后的上行数据发送给接入网设备；
步骤410，接入网设备接收终端发送的上行数据。
综上所述，本实施例提供的数据发送方法，接入网设备向终端指示的上行预编码向量，是终端对下行参考信号进行测量所得到的若干个上行预编码向量中的一部分预编码向量；解决了接入网设备从预设的码本中选择的预编码矩阵并不一定适合终端的上行信道的实际情况，导致上行数据的传输性能较差的问题；达到了终端采用的预编码向量是终端对下行参考信号进行测量所得到的预编码向量，基于信道互易性原理，该预编码向量更适合终端的上行信道的实际情况，能够提高上行数据的传输性能。
图5示出了本申请另一个实施例提供的数据发送方法的流程图。本实施例以该数据发送方法应用于图1所示的通信系统中来举例说明。该方法包括：
步骤501，接入网设备向终端发送下行配置信令；
下行配置信令用于配置下行参考信号的时频资源，时频资源是用于传输下行参考信号的时频资源。在下行参考信号的时频资源中，时域资源包括：下行参考信号所占用的正交频分复用技术(Orthogonal Frequency-Division Multiplexing，OFDM)符号索引，下行参考信号所占用的频域资源包括：物理资源块(Physical Resource Block，PRB)索引。
可选地，该下行配置指令还用于配置上行SRS资源，上行SRS资源是用于传输SRS的资源。在上行SRS资源中，时域资源包括：SRS所占用的OFDM符号索引，频域资源包括：SRS所占用的PRB索引。
可选地，该下行配置指令还用于配置生成SRS所需的：序列资源，或者，序列资源和码资源。其中，序列资源是Zadoff-Chu序列的基序列编号；码资源是对Zadoff-Chu序列的循环移位数，和/或，码资源是对Zadoff-Chu序列的正交扩频码的索引。
步骤502，终端接收接入网设备发送的下行配置信令。
终端根据下行配置信令确定下行参考信号的时频资源。
可选地，终端还根据下行配置信令确定上行SRS资源。可选地，上行SRS资源为至少两个，不同的上行SRS资源对应不同的上行端口。
可选地，终端还根据下行配置信令确定用于生成SRS的序列资源，或者，用于生成SRS的序列资源和码资源。
步骤503，接入网设备向终端发送下行参考信号；
可选地，接入网设备在下行配置信令所配置的时频资源上发送下行参考信号。
可选地，该下行参考信号是CRS，或者DMRS，或者CSI-RS，或者其它可用于下行信道估计的参考信号。
步骤504，终端接收接入网设备发送的下行参考信号；
可选地，终端在下行配置信令所配置的时频资源上接收下行参考信号。
步骤505，终端对下行参考信号进行测量，得到若干个上行预编码向量；
1、终端在时频资源上测量得到下行参考信号的接收信号矩阵。
假设下行参考信号的接收信号矩阵为YN*M，YN*M的维度是N行M列，N为终端的接收天线数，M为接入网设备的发射天线数，则：
YN*M＝HS+I；
其中，H为接入网设备到终端的下行信道，S为接入网设备发送给终端的信号信息，I为干扰信息。可选地，干扰信息是指干扰和噪声的和信息。可选地，S采用功率归一化为1的信号来表示。
2、终端根据预设信道估计算法，根据接收信号矩阵计算得到下行信道的信道估计矩阵；
终端按照预定信道估计算法对下行参考信号进行信道估计，计算得到下行信道的信道估计矩阵。预定信道估计算法包括但不限于：最小二乘(Least-Square)信道估计、最小均方误差(Minimum Mean Square Error，MMSE)信道估计、维纳信道估计中的至少一种。
3、终端将下行信道的信道估计矩阵进行转置，得到上行信道的信道估计矩阵；
由于在LTE或5G中，上下行传输使用同样的频率带宽。当上下行的发送时间间隔足够短时,可认为上行信道与下行信道的衰落基本相同，也即上下行信道具有信道互易性。
根据信道互易性，终端得到上行信道的信道估计矩阵。其中，是下行信道的信道估计矩阵的转置。
4、终端对上行信道的信道估计矩阵进行奇异值分解(Singular value decomposition，SVD)得到预编码矩阵。
示意性的，终端对进行SVD分解(或者其它矩阵分解方法)得到；
其中，U为酉矩阵，∑是半正定的对角矩阵，VH是V的共轭转置矩阵。其中，V的维度为N行r列的矩阵。M、N、r均为正整数。
示意性的，V是预编码矩阵，V中的每一列矩阵元素均为一个预编码向量。每个预编码向量的维度为N，也即终端的发送天线数。
步骤506，终端在若干个上行SRS资源上向接入网设备发送SRS，不同的上行SRS资源上发送的SRS采用不同的上行预编码向量进行预编码；
1、终端根据下行配置信令所指示的序列资源和/或码资源生成SRS；
可选地，终端根据下行配置信令中所配置的序列资源生成SRS。
可选地，终端根据下行配置信令中所配置的序列资源和码资源生成SRS。也即，终端根据序列资源中的基序列编号确定Zadoff-Chu序列，根据码资源所指示的循环移位值对Zadoff-Chu序列进行循环移位，得到SRS。
比如，终端通过对同一个Zadoff-Chu序列的不同循环移位，得到4个SRS。
2、终端根据下行配置信令确定若干个上行SRS资源，不同的上行SRS资源对应不同的上行端口。
以上行SRS资源为4个为例，终端根据下行配置信令确定了4个上行SRS资源，第一 个上行SRS资源对应上行端口port 0、第二个上行SRS资源对应上行端口port 1、第三个上行SRS资源对应上行端口port 2、第四个上行SRS资源对应上行端口port 3。
3、终端使用预编码向量对SRS进行预编码，不同的上行SRS资源上的SRS使用不同的预编码向量进行预编码。
比如，终端从预编码矩阵V的全部r个预编码向量中，选取4个预编码向量。使用第一个预编码向量对第一个上行SRS资源上的第一SRS进行预编码、使用第二个预编码向量对第二个上行SRS资源上的第二SRS进行预编码、使用第三个预编码向量对第三个上行SRS资源上的第三SRS进行预编码、使用第四个预编码向量对第四个上行SRS资源上的第四SRS进行预编码。
4、终端在若干个上行SRS资源上发送经过预编码后的SRS。
比如，终端在第一个上行SRS资源(上行端口port 0)上发送第一SRS；在第二个上行SRS资源(上行端口port 1)上发送第二SRS；在第三个上行SRS资源(上行端口port 2)上发送第三SRS；在第四个上行SRS资源(上行端口port3)上发送第四SRS。
步骤507，接入网设备接收终端在若干个上行SRS资源上发送的SRS；
比如，接入网设备在第一个上行SRS资源(上行端口port 0)上接收第一SRS；在第二个上行SRS资源(上行端口port 1)上接收第二SRS；在第三个上行SRS资源(上行端口port 2)上接收第三SRS；在第四个上行SRS资源(上行端口port3)上发接收第四SRS。
步骤508，接入网设备向终端发送上行调度信令，该上行调度信令用于指示至少一个上行SRS资源的资源索引；
可选地，本步骤包括如下步骤：
1、接入网设备根据预定策略，选择出一部分上行SRS资源的资源索引。
可选地，接入网设备根据接收到的SRS的信号质量，确定出具有最优信号质量的SRS；选择具有最优信号质量的SRS对应的上行SRS资源的资源索引。比如，上行端口port 0上的SRS具有最优信号质量，选择出上行端口port 0作为资源索引。
可选地，接入网设备根据接收到的SRS的信号质量，确定出适合与其它终端进行配对传输的SRS；选择与其它终端具有较好的协同传输性能的SRS对应的上行SRS资源的资源索引。比如，上行端口port 1上的SRS适合与其它终端进行配对传输，选择出上行端口port1作为资源索引。
可选地，接入网设备确定排序在前n个上行端口的SRS，选择与前n个上行端口的SRS对应的上行SRS资源的资源索引。
需要说明的是，本实施例对接入网设备的确定方式不加以限定。接入网设备所确定出来的上行SRS资源的资源索引，是终端在发送SRS时所使用的一部分或全部上行SRS资源的资源索引。
可选地，上行SRS资源的资源索引使用上行端口的端口索引表示；或者，上行SRS资源的资源索引使用传输秩(rank)表示。传输秩与端口索引之间存在预定的对应关系。如下表一示意性的示出了传输秩与上行端口的端口索引之间的对应关系。
表一
传输秩(rank)上行端口的端口索引
1 port 0
2 port 0、port 1
3 port 0、port 1、port 2
4 port 0、port 1、port 2、port 3
上行SRS资源的资源索引也可能采用其它方式进行表示，本实施例对此不加以限定。
2、接入网设备生成上行调度信令，该上行调度信令用于指示至少一个上行SRS资源的资源索引。
上行调度信令又称上行调度授权(Up Link grant，UL grant)。上行调度信令用于向终端配置PUSCH的时频资源，也即用于传输上行数据的时频资源。
在本申请实施例中，上行调度信令除了用来指示PUSCH的时频资源。上行调度信令还携带有至少一个上行SRS资源的资源索引。该资源索引用于指示终端使用与该资源索引所对应的上行预编码向量对上行数据进行预编码。
3、接入网设备向终端发送上行调度信令。
步骤509，终端接收接入网设备发送的上行调度信令；
可选地，终端根据上行调度信令确定PUSCH的时频资源，也即用于传输上行数据的时频资源。
步骤510，终端根据资源索引所对应的上行预编码向量对上行数据进行预编码；
可选地，该资源索引所对应的上行预编码向量，是终端对下行参考信号进行测量所得到的若干个上行预编码向量中的一部分。
可选地，本步骤包括如下步骤：
1、终端根据上行调度信令确定上行SRS资源的资源索引，该资源索引对应的上行SRS资源是终端在步骤506中所使用的上行SRS资源中的全部或一部分。
2、终端根据该上行SRS资源的资源索引确定资源索引所对应的上行预编码向量。
当该资源索引使用上行端口的端口索引表示时，终端确定与该端口索引所对应的上行预编码向量；当该资源索引使用传输秩表示时，终端根据预定对应关系(示意性的如表一所示)确定与该传输秩所对应的上行预编码向量。
3、终端根据确定与资源索引所对应的上行预编码向量对上行数据进行预编码。
比如，上行SRS资源的资源索引是port 0，则终端根据port 0对应的第一上行预编码向量对上行数据进行预编码。
步骤511，终端将预编码后的上行数据发送给接入网设备；
可选地，终端根据上行调度信令所指示的时频资源，将预编码后的上行数据发送给接入网设备。
步骤512，接入网设备接收终端发送的上行数据。
接入网设备在上行调度信令所指示的时频资源上，接收终端发送的上行数据。
综上所述，本实施例提供的数据发送方法，接入网设备向终端指示的上行预编码向量，是终端对下行参考信号进行测量所得到的若干个上行预编码向量中的一部分预编码向量；解决了接入网设备从预设的码本中选择的预编码矩阵并不一定适合终端的上行信道的实际情况，导致上行数据的传输性能较差的问题；达到了终端采用的预编码向量是终端对下行参考信号进行测量所得到的预编码向量，基于信道互易性原理，该预编码向量更适合终端的上行信道的实际情况，能够提高上行数据的传输性能。
在基于图5所示实施例的可选实施例中，上行调度信令还用于指示上行数据采用的调制编码方式(Modulation and Coding Scheme，MCS)。该MCS是采用资源索引所对应的上行预编码向量进行预编码的上行数据的MCS。可选地，上述步骤510包括如下步骤:
1、终端根据上行调度信令确定上行SRS资源的资源索引和MCS，该资源索引对应的上行SRS资源是终端在步骤506中所使用的上行SRS资源中的全部或一部分。
2、终端根据MCS对上行数据进行信道编码和调制；
3、终端根据该上行SRS资源的资源索引确定资源索引所对应的上行预编码向量。
当该资源索引使用上行端口的端口索引表示时，终端确定与该端口索引所对应的上行预编码向量；当该资源索引使用传输秩表示时，终端根据预定对应关系(示意性的如表一所示)确定与该传输秩所对应的上行预编码向量。
4、终端根据确定与资源索引所对应的上行预编码向量对上行数据进行预编码。
该上行数据是步骤2中经过信道编码和调制后的上行数据。终端根据确定与资源索引所对应的上行预编码向量对上行数据进行预编码。
比如，上行SRS资源的资源索引是port 0，则终端根据port 0对应的第一上行预编码向量对上行数据进行预编码。
在基于图5所示实施例的可选实施例中，上行调度信令还用于指示上行数据采用的预编码方式，该预编码方式是开环预编码方式或闭环预编码方式。
开环预编码方式是指终端轮流采用不同的上行预编码向量对不同的时频资源上的上行数据进行预编码的方式；其中，不同的时频资源包括不同的物理资源块或不同的子载波或不同的OFDM符号。
示意性的参考图6A，用于传输上行数据的时频资源在时域T上占用0至13共14个OFDM符号，在频域F上占用PRB pair(对)0和PRB pair 1。终端轮流采用四个不同的上行预编码向量对不同子载波上的上行数据进行预编码。也即，对于PRB pair 0和PRB pair 1中的第0个、第4个和第8个子载波使用上行端口port 0对应的第一上行预编码向量V0进行预编码；对于PRB pair 0和PRB pair 1中的第1个、第5个和第9个子载波使用上行端口port 1对应的第二上行预编码向量V1进行预编码；对于PRB pair 0和PRB pair 1中的第2个、第6个和第10个子载波使用上行端口port 2对应的第三上行预编码向量V2进行预编码；对于PRB pair 0和PRB pair 1中的第3个、第7个和第11个子载波使用上行端口port 3对应的第四上行预编码向量V3进行预编码。
示意性的参考图6B，用于传输上行数据的时频资源在时域T上占用0至13共14个OFDM符号，在频域F上占用PRB pair(对)0和PRB pair 1。终端轮流采用四个不同的上行预编码向量对不同OFDM符号上的上行数据进行预编码。也即，对于第0个、第4个、第8个和第12个OFDM符号使用上行端口port 0对应的第一上行预编码向量V0进行预编码；对于第1个、第5个、第9个和第13个符号使用上行端口port 1对应的第二上行预编码向量V1进行预编码；对于第2个、第6个和第10个OFDM符号使用上行端口port 2对应的第三上行预编码向量V2进行预编码；对于第3个、第7个和第11个OFDM符号使用上行端口port 3对应的第四上行预编码向量V3进行预编码。
闭环预编码方式是指终端采用相同的上行预编码向量对指定时频资源上的上行数据进行预编码的方式。
示意性的参考图6C，用于传输上行数据的时频资源在时域T上占用0至13共14个OFDM符号，在频域F上占用PRB pair0和PRB pair 1。终端采用使用上行端口port 0对应的第一上行预编码向量V0对整个时频资源上的上行数据进行预编码。
在基于图5所示实施例的可选实施例中，该上行调度信令还用于指示上行数据所使用的时频资源，也即PUSCH的时频资源。
可选地，上行数据所使用时频资源包括至少两个子带，每个子带上发送的上行数据采用各自独立的资源索引所对应的上行预编码向量进行预编码。比如，上行数据所使用的时频资源包括子带1和子带2，子带1包括2个PRB，子带2包括3个PRB。对于子带1上的上行数据，采用上行端口port 0对应的第一上行预编码向量V0进行预编码；对于子带2上的上行数据，采用上行端口port 1对应的第二上行预编码向量V1进行预编码。
可选地，上行数据时频资源的带宽上发送的上行数据采用相同的所源索引所对应的上行预编码向量进行预编码。
在基于图5所示实施例的可选实施例中，该上行调度信令还用于指示上行数据所使用的时频资源，该时频资源包括第一子带集合和第二子带集合。
可选地，上行调度信令还用于指示第一子带集合上发送的上行数据采用资源索引所对应的上行预编码向量进行预编码。第一子带集合包括至少一个子带，每个子带包括至少一个PRB，也即对于第一子带集合使用图4或图5实施例提供的资源索引所对应的上行预编码向量进行预编码。
可选地，上行调度信令还用于指示第二子带集合上发送的上行数据采用基于码本所确定的上行预编码向量进行预编码。第二子带集合包括至少一个子带，每个子带包括至少一个PRB，也即对于第二子带集合使用传统的基于码本所确定的上行预编码向量进行预编码。该基于码本所确定的上行预编码向量是由接入网设备所确定的。
在基于图5所示实施例的可选实施例中，下行配置指令占用的时域资源和下行参考信号占用的时域资源位于相同的时间单元中，该时间单元是时隙或子帧或传输时间间隔，该时间单元包括n个OFDM符号(简称符号)。示意性的参考图7，图7以一个时间单元包括7个OFDM符号为例(也可以是其它个数)来举例说明。
下行配置信令DCI占用该时间单元的第0～X1个OFDM符号；
下行参考信号DL RS占用该时间单元的X2～X3个OFDM符号；
其中，X1＝1或2或3，X3＝X2或X2+1，n-1＞X3≥X2≥1。
示意性的，在图7中，下行配置信令DCI在时域T上占用该时间单元的第0个符号，下行参考信号DL RS在时域T上占用该时间单元的第1个符号。可选地，下行参考信号DL RS在频域F上占用连续或非连续的频域带宽。
在基于图5所示实施例的可选实施例中，下行配置指令占用的时域资源和下行参考信 号占用的时域资源位于相同的时间单元中，该时间单元是时隙或子帧或传输时间间隔，该时间单元包括n个OFDM符号。示意性的参考图8，图8以一个时间单元包括7个OFDM符号为例(也可以是其它个数)来举例说明。
下行配置信令DCI占用该时间单元的第0～X1个OFDM符号；
下行参考信号DL RS占用该时间单元的X2～X3个OFDM符号；
SRS占用该时间单元的X4～X5个OFDM符号；
其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X5≥X4＞X3+1。
示意性的，在图8中，下行配置信令DCI在时域T上占用该时间单元的第0个符号，下行参考信号DL RS在时域T上占用该时间单元的第1个符号，SRS在时域T上占用该时间单元的第3个至第5个符号。可选地，下行参考信号DL RS在频域F上占用连续或非连续的频域带宽。
可选地，若下行配置指令配置的上行SRS资源占用多个频域资源，则SRS在m个频域资源中跳频传输。也即，SRS在不同的OFDM符号中，使用不同的频域带宽进行传输。
可选地，下行参考信号的时频资源所占的频域带宽和上行SRS资源所占的频域带宽相同。
在基于图5所示实施例的可选实施例中，下行配置指令占用的时域资源和下行参考信号占用的时域资源位于相同的时间单元中，该时间单元是时隙或子帧或传输时间间隔，该时间单元包括n个OFDM符号。示意性的参考图9，图9以一个时间单元包括7个OFDM符号为例(也可以是其它个数)来举例说明。
下行配置信令DCI占用所述时间单元的第0～X1个OFDM符号；
下行参考信号DL RS占用所述时间单元的X2～X3个OFDM符号；
SRS(或者说上行SRS资源)占用所述时间单元的X4～X5个OFDM符号；
上行调度信令UL grant占用时间单元的第Y6至Y7个符号；
其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X7≥X6＞X5≥X4＞X3+1。
示意性的，在图9中，下行配置信令DCI在时域T上占用该时间单元的第0个符号，下行参考信号DL RS在时域T上占用该时间单元的第1个符号，SRS在时域T上占用该时间单元的第3个至第5个符号，上行调度信令UL grant占用该时间单元的第6个符号。
可选地，若下行配置指令配置的上行SRS资源占用多个频域资源，则SRS在m个频域资源中跳频传输。也即，SRS在不同的OFDM符号中，使用不同的频域带宽进行传输。
可选地，下行参考信号的时频资源所占的频域带宽和上行SRS资源所占的频域带宽相同。
综上所述，本实施例提供的数据发送方法，使得终端能够在一个时域单元内，就能够快速和高性能地向接入网设备发送上行数据。
需要说明的是，上述基于图5所示实施例的各个可选实施例中，还可以互相组合实施。对于上述各个可选实施例的组合实施方式，是本领域技术人员根据上述各个可选实施例的描述所易于思及的，本文不再赘述。
需要说明的是，上述图5所示实施例或者各个可选实施例中，由终端所执行的步骤可以单独实现成为终端一侧的数据发送方法；由接入网设备所执行的步骤可以单独实现成为 接入网设备一侧的上行数据接收方法。
需要说明的是，上述图7至图9所示的资源占用图仅为示意性说明，不代表各种信号或数据的精确资源位置。
在基于图5所示实施例的可选实施例中，上行调度信令使用两级控制信令来发送。为了阐述这部分细节，请参考如下实施例。
图10示出了本申请一个实施例提供的信令发送方法的流程图。本实施例以该信令发送方法应用于图1所示的通信系统来举例说明。该方法还可以与图4或图5所示实施例结合实施。该信令发送方法包括：
步骤1001，接入网设备向终端发送调度授权信令，该调度授权信令包括第一级控制信令和第二级控制信令；
第一级控制信令用于指示M种传输方式中的公共调度信息；
第二级控制信令用于指示M种传输方式中的特定调度信息；
其中，M为大于等于2的整数。
步骤1002，终端接收接入网设备发送的调度授权信令，该调度授权信令包括第一级控制信令和第二级控制信令。
可选地，该调度授权信令是下行调度授权，或者，上行调度授权(UL grant)。
综上所述，本实施例提供的信令发送方法，通过分两级控制信令向终端发送调度授权信令，将M种传输方式中的公共调度信息集中在第一级控制信令中发送，能够达到降低调度授权信令的传输资源开销，提高接入网设备对终端的控制效率，还能使终端在不同的传输模式中快速切换的效果。
在基于图10所示实施例的可选实施例中，调度授权指令是上行调度授权。该M种传输方式包括如下传输方式中的至少两种：
单天线传输方式；
发射分集传输方式；
基于码本的开环预编码的方式；
基于码本的闭环预编码的方式；
基于信道互易性的开环预编码的方式；
基于信道互易性的闭环预编码的方式；
其中，基于码本的开环预编码的方式是轮流采用接入网设备指示的码本中的预编码向量对不同的时频资源上的上行数据进行预编码的方式；基于码本的闭环预编码的方式是采用接入网设备指示的码本中的预编码矩阵对指定时频资源上的所述上行数据进行预编码的方式；基于信道互易性的开环预编码的方式是轮流采用通过下行信道(或者说下行参考信号)测量得到的预编码向量对不同的时频资源上的上行数据进行预编码的方式；基于信道互易性的闭环预编码方式是指采用通过下行信道(或者说下行参考信号)测量得到的预编码向量对指定时频资源上的所述上行数据进行预编码的方式。
在基于图10所示实施例的可选实施例中，调度授权指令是下行调度授权。该M种传输方式包括如下传输方式中的至少两种：
单天线传输方式；
发射分集传输方式；
开环预编码的方式；
闭环预编码的方式；
其中，开环预编码的方式是轮流采用接入网设备指示的码本中的预编码向量对不同的时频资源上的下行数据进行预编码的方式；闭环预编码的方式是采用接入网设备指示的码本中的预编码矩阵对指定时频资源上的下行数据进行预编码的方式。
在基于图10所示实施例的可选实施例中，第一级控制信令包括：
第一调度资源指示信息、第二级控制信令的传输方式的指示信息；
或，第一调度资源指示信息、第二级控制信令的传输方式的指示信息、第一MSC；
或，第一调度资源指示信息、第二级控制信令的传输方式的指示信息、第一MSC，解调导频端口信息；
或，第一调度资源指示信息、第二级控制信令的传输方式的指示信息、所述第一MSC、第一级预编码矩阵指示信息；
或，第一调度资源指示信息、第二级控制信令的传输方式的指示信息、第一级预编码矩阵指示信息；
或，第一调度资源指示信息、第二级控制信令的传输方式的指示信息、第一MSC、第一级预编码矩阵指示信息、功率控制命令、信道测量触发信息、上行SRS资源的资源配置信息；
其中，第一MCS是第一个传输块的MCS，或者，按照假设的第一传输方式下的MCS。
其中，第一调度资源指示信息用于指示数据信道的时频资源；第二级控制信令的传输方式的指示信息用于指示M种传输方式中的一种；解调导频端口信息用于指示用于解调数据的导频的时频资源、解调导频的端口索引、解调导频的扩频码信息中至少一个；第一级预编码矩阵指示信息(Precoding-Matrix Indicator，PMI)用于指示第一级预编码矩阵，第一级预编码矩阵包括至少一个预编码向量；功率控制命令用于向终端指示上行发送功率的相关参数；信道测量触发信息用于触发终端对下行参考信号进行测量并且反馈信道测量结果。
在基于图10所示实施例的可选实施例中，第二级控制信令包括：
第二级预编码矩阵指示信息；
或，第二MCS、第二级预编码矩阵指示信息；
或，第二MCS、第二级预编码矩阵指示信息；
或，第二MCS、第二级预编码矩阵指示信息，解调导频端口信息；
或，第二MCS、第二级预编码矩阵指示信息、第二调度资源指示信息；
其中，第二MCS是第二个传输块的MCS，或者，按照第二级控制信令的传输方式相对于第一传输方式的MCS的差分MCS；第二调度资源指示信息用于在第一调度资源指示信息所指示的时频资源范围内进行资源指示，比如，第一调度资源指示信息用于指示从100个PRB中指示了10个PRB作为数据信道的传输资源，则第二调度资源指示信息用于从10个PRB中指示出更精细的3个PRB。
可选地，第一级预编码矩阵信息用于确定双码本结构中的第一级预编码矩阵W1；第二级预编码矩阵信息用于确定双码本结构中的第二级预编码矩阵W2。
双码本结构中的第一级预编码矩阵其形式如下
双码本结构中的第二级预编码矩阵其形式如下：
Rank1：
Rank2：
其他rank的参考LTE中双码本的设计原则；不再详细举例。
在基于图10所示实施例的可选实施例中，上述方法还包括步骤903，如图11所示：
步骤1003，终端根据第一级控制信令和第二级控制信令确定数据信道的调度信息。
本实施例中的数据信道是广义的，即指用于传输数据的信道，也指该信道上所传输的数据本身。比如，PUSCH即可以理解为PUSCH信道，也可以理解为在PUSCH上传输的上行数据；物理下行共享信道(Physical Downlink Shared Channel，PDSCH)既可以理解为PDSCH信道，也可以理解为在PDSCH上传输的下行数据。
数据信道的调度信息包括但不限于：数据信道的时频资源(或者说时频资源位置)、每个时频资源上传输的数据的预编码向量、每个时频资源上传输的数据的MCS等等。
可选地，在确定数据信道的时频资源方面，步骤1003包括如下步骤：
终端根据第一调度资源信息确定数据信道的时频资源；或者，终端根据第一调度资源信息和第二调度资源信息确定数据信道的时频资源。
可选地，在确定每个时频资源上所传输的数据的预编码向量方面，步骤1003包括如下步骤：
1、终端根据第一级控制信令中的第一级预编码矩阵指示信息确定双码本结构中的第一预编码矩阵W1；
2、终端根据第二级控制信令中的第二级预编码矩阵指示信息确定双码本结构中的第二预编码矩阵W2；
3、终端根据第一预编码矩阵W1和第二预编码矩阵W2确定数据信道上传输的数据所采用的预编码矩阵。
可选地，终端将第一预编码矩阵W1和第二预编码矩阵W2相乘，得到数据信道上传输的数据所使用的预编码矩阵。
可选地，第一级预编码矩阵指示信息是在接收到下一个第一级控制信令中的第一预编码矩阵指示信息之前持续有效的信息；第二级预编码矩阵指示信息是本次调度有效的指示信息。
可选地，第一级控制信令和第二级控制信令分别占用同一时间单元中的不同OFDM符号；第一级控制信令占用该时间单元中的前n个OFDM符号，n为正整数；第二级控制信令占用该时间单元中的数据调度带宽。
可选地，第一级控制信令和第二级控制信令分别占用不同时间单元。第二级控制信令用于与该第二级控制信令之前发送的最近一个第一级控制信令联合确定数据信道的调度信息。
可选地，两个第一级控制信令分别占用第i个时间单元和第i+j个时间单元，存在至少两个第二级控制信令占用的时间单元为第i+k个时间单元，0≤k≤j，i，j，k均为整数。
示意性的，参考图12A所示，在时域T上，第一级控制信令DCI11占用第1个时间单元，第二级控制信令DCI21占用第2个时间单元、第二级控制信令DCI22占用第3个时间单元、第二级控制信令DCI23占用第4个时间单元、第二级控制信令DCI24占用第5个时间单元、第一级控制信令DCI12占用第6个时间单元
在第一级控制信令DCI11和第一级控制信令DCI12之间，存在四个第二级控制信令DCI21、DCI22、DCI23、DCI24。
其中，第一级控制信令DCI11中的第一级预编码矩阵指示信息指示的第一级预编码矩阵为W11、第二级控制信令DCI21中的第二级预编码矩阵指示信息指示的第二级预编码矩阵为W21、第二级控制信令DCI22中的第二级预编码矩阵指示信息指示的第二级预编码矩阵为W22、第二级控制信令DCI23中的第二级预编码矩阵指示信息指示的第二级预编码矩阵为W23、第二级控制信令DCI24中的第二级预编码矩阵指示信息指示的第二级预编码矩阵为W24、第一级控制信令DCI12中的第一级预编码矩阵指示信息指示的第一级预编码矩阵为W12。
可选地，第一级预编码矩阵指示信息指示的第一级预编码矩阵是对应宽带的，第二级预编码矩阵指示信息指示的第二级预编码矩阵是对应子带的。也即，第一级预编码矩阵指示信息是适用于第一级控制信令的整个频域带宽的预编码矩阵；第二级预编码矩阵指示信息是仅适用于第二级控制指令所指示的子带的预编码矩阵。
可选地，第二级控制信令用于与第二级控制信令之前发送的最近一个第一级控制信令联合确定数据信道的调度信息。也即，终端使用第二级控制信令中的第二调度资源信息与第二级控制信令之前发送的最近一个第一级控制信令中的第一调度资源信息联合确定数据信道的时频资源。
示意性的参考图12A和图12B，图12B示出了数据信道的时频资源的频域带宽示意图。
假设第一级控制信令DCI11中的第一调度资源信息所指示的时频资源占用的频域带宽是宽带F1；第二级控制信令DCI21中的第二调度资源信息所指示的时频资源占用的频域带宽是子带F11、第二级控制信令DCI22中的第二调度资源信息所指示的时频资源占用的频域带宽是子带F12、第二级控制信令DCI23中的第二调度资源信息所指示的时频资源占用的频域带宽是子带F13、第二级控制信令DCI24中的第二调度资源信息所指示的时频资源占用的频域带宽是子带F14。
其中，子带F11、子带F12、子带F13和子带F14均属于宽带F1的一部分。每个子带包括至少一个PRB，每个子带的带宽相同或不同。
其中，第一级预编码矩阵W11适用于整个宽带F1、第二级预编码矩阵W21适用于子带F11、第二级预编码矩阵W22适用于子带F12、第二级预编码矩阵W23适用于子带F13、第二级预编码矩阵W24适用于子带F14。
可选地，终端使用第二级控制信令中的第二级预编码矩阵指示信息与第二级控制信令 之前发送的最近一个第一级控制信令中的第一第二级预编码矩阵指示信息联合确定数据所采用的预编码矩阵(或者预编码向量)。
终端在确定子带F11中的数据所采用的预编码矩阵时，使用W11与W21的乘积所得到的预编码矩阵W11*W21；终端在确定子带F12中的数据所采用的预编码矩阵时，使用W11与W22的乘积所得到的预编码矩阵W11*W22；终端在确定子带F13中的数据所采用的预编码矩阵时，使用W11与W23的乘积所得到的预编码矩阵W11*W23；终端在确定子带F14中的数据所采用的预编码矩阵时，使用W11与W24的乘积所得到的预编码矩阵W11*W24。
从图12A和图12B可知，第一级预编码矩阵指示信息是在接收到下一个第一级控制信令中的第一预编码矩阵指示信息之前持续有效的信息；第二级预编码矩阵指示信息是本次调度有效的指示信息。
在基于图10实施例的可选实施例中，第一级控制信令和第二级控制信令分别占用同一时间单元中的不同OFDM符号；第一级控制信令占用该时间单元中的前n个OFDM符号，n为正整数；第二级控制信令占用该时间单元中的数据调度带宽。
在基于图10实施例的可选实施例中，第一级控制信令还用于指示第二级控制信令的时频位置。终端通过UE盲检测技术接收第一级控制信令的时频位置，通过第一级控制信令所指示的第二级控制信令的时频位置，接收第二级控制信令。
在基于图10实施例的可选实施例中，M种传输方式中存在至少一种传输方式仅对应第一级控制信令，不需要第二级控制信令，比如，单天线传输方式。此时，终端在接收到第一级控制信令后，停止检测第二级控制信令。
需要说明的是，上述图10或图11中由终端执行的步骤可以单独实现成为终端一侧的信令接收方法；上述图10或图11中由接入网设备执行的步骤可以单独实现成为接入网设备一侧的信令发送方法。
以下为本申请实施例的装置实施例，对于装置实施例中未详细描述的细节，请参考上述对应的方法实施例。
图13示出了本申请一个实施例提供的数据发送装置的框图。该消息发送装置可以通过专用硬件电路，或者，软硬件的结合实现成为终端的全部或一部分。该消息发送装置包括：接收单元1320、处理单元1320和发送单元1340。
接收单元1320，用于实现上述步骤402、步骤407、步骤502、步骤504的接收功能，以及由终端接收信息的其它隐含步骤。
处理单元1320，用于实现上述步骤403、步骤408、步骤505、步骤510的功能，以及由终端处理信息的其它隐含步骤或数据。
发送单元1340，用于实现上述步骤404、步骤409、步骤506、步骤509和步骤511的发送功能，以及由终端发送信息的其它隐含步骤。
相关细节可结合参考图4或图5或图10或图11所述的方法实施例。
需要说明的是，上述接收单元1320可以由接收机实现，或者，由处理器配合接收机来实现；上述处理单元1340可以由处理器来实现，或者，处理器执行存储器中的程序指令来实现；上述发送单元1360可以由发射机实现，或者处理器配合发射机来实现。
还需要说明的是，该数据发送装置在实现图10或图11所示实施例的步骤时，也可能 是接收下行数据。
图14是本申请另一个实施例提供的数据接收装置的框图。该消息发送装置可以通过专用硬件电路，或者，软硬件的结合实现成为接入网终端或第一接入网设备的全部或一部分。该消息发送装置包括：发送单元1420、处理单元1440和接收单元1440。
发送单元1420，用于实现上述步骤401、步骤406、步骤501、步骤503、步骤508中的发送功能，以及由接入网终端发送信息的其它隐含步骤。
处理单元1440，用于实现上述步骤408的处理功能、以及由接入网设备处理信息的其它隐含步骤。
接收单元1440，用于实现上述步骤405、步骤410、步骤507和步骤512的接收功能，以及由接入网设备接收信息的其它隐含步骤。
相关细节可结合参考图4或图5或图10或图11所述的方法实施例。
需要说明的是，上述发送单元1420可以由发射机实现，或者处理器配合发射机来实现；上述处理单元1440可以由处理器来实现，或者，处理器执行存储器中的程序指令来实现；上述接收单元1460可以由接收机Rx实现，或者处理器配合接收机来实现。
还需要说明的是，该数据接收装置在实现图10或图11所示实施例的步骤时，也可能是发送下行数据。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的较佳实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (80)

  1. 一种数据发送装置，其特征在于，所述装置包括：
    接收单元，用于接收接入网设备发送的下行参考信号；
    处理单元，用于对所述下行参考信号进行测量，得到若干个上行预编码向量；
    发送单元，用于在若干个上行探测参考信号SRS资源上向所述接入网设备发送SRS，不同的所述上行SRS资源上发送的所述SRS采用不同的所述上行预编码向量进行预编码；
    所述接收单元，用于接收所述接入网设备发送的上行调度信令，所述上行调度信令用于指示至少一个所述上行SRS资源的资源索引；
    所述处理单元，用于根据所述资源索引所对应的所述上行预编码向量对上行数据进行预编码；
    所述发送单元，用于将预编码后的所述上行数据发送给所述接入网设备。
  2. 根据权利要求1所述的装置，其特征在于，不同的所述上行SRS资源对应不同的SRS端口。
  3. 根据权利要求1所述的装置，其特征在于，所述上行调度信令还用于指示所述上行数据采用的编码调制方式MCS，所述MCS是采用所述资源索引所对应的所述上行预编码向量进行预编码的所述上行数据的MCS。
  4. 根据权利要求1所述的装置，其特征在于，所述上行调度信令还用于指示所述上行数据采用的预编码方式，所述预编码方式是开环预编码方式或闭环预编码方式。
  5. 根据权利要求4所述的装置，其特征在于，所述开环预编码方式是指轮流采用不同的所述上行预编码向量对不同的时频资源上的所述上行数据进行预编码的方式；
    其中，所述不同的时频资源包括不同的物理资源块或不同的子载波或不同的正交频分复用技术OFDM符号。
  6. 根据权利要求4所述的装置，其特征在于，所述闭环预编码方式是指采用相同的所述上行预编码向量对指定时频资源上的所述上行数据进行预编码的方式。
  7. 根据权利要求1所述的装置，其特征在于，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
    所述时频资源包括至少两个子带，每个所述子带上发送的所述上行数据采用各自独立的所述资源索引所对应的所述上行预编码向量进行预编码；
    或，
    所述时频资源的带宽上发送的所述上行数据采用相同的所述资源索引所对应的所述上行预编码向量进行预编码。
  8. 根据权利要求1所述的装置，其特征在于，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
    所述时频资源包括第一子带集合和第二子带集合；
    所述上行调度信令还用于指示所述第一子带集合上发送的所述上行数据采用所述资源索引所对应的所述上行预编码向量进行预编码；
    所述上行调度信令还用于指示所述第二子带集合上发送的所述上行数据采用基于码本所确定的上行预编码向量进行预编码。
  9. 根据权利要求1至8任一所述的装置，其特征在于，所述接收单元，用于接收所述接入网设备发送的下行配置信令；
    所述下行配置信令用于配置所述下行参考信号的时频资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源和所述SRS的序列资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述SRS的序列资源和所述SRS的码资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源和所述SRS的序列资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源、所述SRS的序列资源和所述SRS的码资源。
  10. 根据权利要求9所述的装置，其特征在于，所述下行配置指令占用的时域资源和所述下行参考信号占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1＞X3。
  11. 根据权利要求9所述的装置，其特征在于，所述下行配置指令占用的时域资源、所述下行参考信号占用的时域资源和所述SRS占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    所述SRS占用所述时间单元的X4～X5个OFDM符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X5≥X4＞X3+1。
  12. 根据权利要求9所述的装置，其特征在于，所述下行配置指令所占用的时域资源、所述下行参考信号所占用的时域资源、所述SRS占用的时域资源和所述上行调度信令在相同的时间单元，所述时间单元包括n个符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    所述SRS占用所述时间单元的X4～X5个OFDM符号；
    所述上行调度信令占用所述时间单元的第Y6至Y7个符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X7≥X6＞X5≥X4＞X3+1。
  13. 根据权利要求9至12任一所述的装置，其特征在于，所述上行SRS资源占用m个频域资源，所述SRS在m个所述频域资源中跳频传输。
  14. 根据权利要求9至12任一所述的装置，其特征在于，所述下行参考信号的时频资源所占的频域带宽和所述上行SRS资源所占的频域带宽相同。
  15. 根据权利要求9所述的装置，其特征在于，所述下行配置指令用于配置所述下行参考信号的时频资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
    所述OFDM符号位置包括：所述下行参考信号占用的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
    所述PRB位置包括：所述下行参考信号占用的全部传输带宽中的PRB索引，所述若干个PRB是非连续的PRB或者连续的PRB。
  16. 根据权利要求9所述的装置，其特征在于，所述下行配置指令用于配置所述上行SRS资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
    所述OFDM符号位置包括：所述上行SRS资源对应的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
    所述PRB位置包括：所述上行SRS资源对应的全部传输带宽中的PRB索引，所述SRS在所述传输带宽中跳频传输，所述若干个PRB是非连续的PRB或者连续的PRB；
    其中，所述SRS在每个所述OFDM符号中所占用的所述传输带宽相同或不同。
  17. 一种数据接收装置，其特征在于，所述装置包括：
    发送单元，用于向终端发送下行参考信号；
    接收单元，用于接收所述终端在至少一个上行探测参考信号SRS资源上发送的SRS，不同所述上行SRS资源的所述SRS采用不同的上行预编码向量进行预编码，所述上行预编码向量是所述终端根据所述下行参考信号测量得到的；
    所述发送单元，用于向所述终端发送上行调度信令，所述上行调度信令用于指示至少一个所述上行SRS资源的资源索引；
    所述接收单元，用于接收所述终端发送的上行数据，所述上行数据是采用所述资源索引所对应的所述上行预编码向量进行预编码后的数据。
  18. 根据权利要求17所述的装置，其特征在于，不同的所述上行SRS资源对应不同的SRS端口。
  19. 根据权利要求16所述的装置，其特征在于，所述上行调度信令还用于指示所述上行 数据采用的编码调制方式MCS，所述MCS是采用所述资源索引所对应的所述上行预编码向量进行预编码的所述上行数据的MCS。
  20. 根据权利要求16所述的装置，其特征在于，所述上行调度信令还用于指示所述上行数据采用的预编码方式，所述预编码方式是开环预编码方式或闭环预编码方式。
  21. 根据权利要求20所述的装置，其特征在于，所述开环预编码方式是指轮流采用不同的所述上行预编码向量对不同的时频资源上的所述上行数据进行预编码的方式；
    其中，所述不同的时频资源包括不同的物理资源块或不同的子载波或不同的正交频分复用技术OFDM符号。
  22. 根据权利要求20所述的装置，其特征在于，所述闭环预编码方式是指采用相同的所述上行预编码向量对指定时频资源上的所述上行数据进行预编码的方式。
  23. 根据权利要求17所述的装置，其特征在于，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
    所述时频资源包括至少两个子带，每个所述子带上发送的所述上行数据采用各自独立的所述资源索引所对应的所述上行预编码向量进行预编码；
    或，
    所述时频资源的带宽上发送的所述上行数据采用相同的所述资源索引所对应的所述上行预编码向量进行预编码。
  24. 根据权利要求17所述的装置，其特征在于，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
    所述时频资源包括第一子带集合和第二子带集合；
    所述上行调度信令还用于指示所述第一子带集合上发送的所述上行数据采用所述资源索引所对应的所述上行预编码向量进行预编码；
    所述上行调度信令还用于指示所述第二子带集合上发送的所述上行数据采用基于码本所确定的上行预编码向量进行预编码。
  25. 根据权利要求17至24任一所述的装置，其特征在于，所述发送单元，用于向所述终端发送下行配置信令；
    所述下行配置信令用于配置所述下行参考信号的时频资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源和所述SRS的序列资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述SRS的序列资源和所述SRS的码资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源和所述SRS的序列资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源、所 述SRS的序列资源和所述SRS的码资源。
  26. 根据权利要求25所述的装置，其特征在于，所述下行配置指令占用的时域资源和所述下行参考信号占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1＞X3。
  27. 根据权利要求25所述的装置，其特征在于，所述下行配置指令占用的时域资源、所述下行参考信号占用的时域资源和所述SRS占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    所述SRS占用所述时间单元的X4～X5个OFDM符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X5≥X4＞X3+1。
  28. 根据权利要求25所述的装置，其特征在于，所述下行配置指令所占用的时域资源、所述下行参考信号所占用的时域资源、所述SRS占用的时域资源和所述上行调度信令在相同的时间单元，所述时间单元包括n个符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    所述SRS占用所述时间单元的X4～X5个OFDM符号；
    所述上行调度信令占用所述时间单元的第Y6至Y7个符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X7≥X6＞X5≥X4＞X3+1。
  29. 根据权利要求25至28任一所述的装置，其特征在于，所述上行SRS资源占用m个频域资源，所述SRS在m个所述频域资源中跳频传输。
  30. 根据权利要求25至28任一所述的装置，其特征在于，所述下行参考信号的时频资源所占的频域带宽和所述上行SRS资源所占的频域带宽相同。
  31. 根据权利要求25所述的装置，其特征在于，所述下行配置指令用于配置所述下行参考信号的时频资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
    所述OFDM符号位置包括：所述下行参考信号占用的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
    所述PRB位置包括：所述下行参考信号占用的全部传输带宽中的PRB索引，所述若干个PRB是非连续的PRB或者连续的PRB。
  32. 根据权利要求25所述的装置，其特征在于，所述下行配置指令用于配置所述上行SRS资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
    所述OFDM符号位置包括：所述上行SRS资源对应的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
    所述PRB位置包括：所述上行SRS资源对应的全部传输带宽中的PRB索引，所述SRS在所述传输带宽中跳频传输，所述若干个PRB是非连续的PRB或者连续的PRB；
    其中，所述SRS在每个所述OFDM符号中所占用的所述传输带宽相同或不同。
  33. 一种数据发送方法，其特征在于，所述方法包括：
    终端接收接入网设备发送的下行参考信号；
    所述终端对所述下行参考信号进行测量，得到若干个上行预编码向量；
    所述终端在若干个上行探测参考信号SRS资源上向所述接入网设备发送SRS，不同的所述上行SRS资源上发送的所述SRS采用不同的所述上行预编码向量进行预编码；
    所述终端接收所述接入网设备发送的上行调度信令，所述上行调度信令用于指示至少一个所述上行SRS资源的资源索引；
    所述终端根据所述资源索引所对应的所述上行预编码向量对上行数据进行预编码，将预编码后的所述上行数据发送给所述接入网设备。
  34. 根据权利要求33所述的方法，其特征在于，不同的所述上行SRS资源对应不同的SRS端口。
  35. 根据权利要求33所述的方法，其特征在于，所述上行调度信令还用于指示所述上行数据采用的编码调制方式MCS，所述MCS是采用所述资源索引所对应的所述上行预编码向量进行预编码的所述上行数据的MCS。
  36. 根据权利要求33所述的方法，其特征在于，所述上行调度信令还用于指示所述上行数据采用的预编码方式，所述预编码方式是开环预编码方式或闭环预编码方式。
  37. 根据权利要求36所述的方法，其特征在于，所述开环预编码方式是指轮流采用不同的所述上行预编码向量对不同的时频资源上的所述上行数据进行预编码的方式；
    其中，所述不同的时频资源包括不同的物理资源块或不同的子载波或不同的正交频分复用技术OFDM符号。
  38. 根据权利要求36所述的方法，其特征在于，所述闭环预编码方式是指采用相同的所述上行预编码向量对指定时频资源上的所述上行数据进行预编码的方式。
  39. 根据权利要求33所述的方法，其特征在于，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
    所述时频资源包括至少两个子带，每个所述子带上发送的所述上行数据采用各自独立的 所述资源索引所对应的所述上行预编码向量进行预编码；
    或，
    所述时频资源的带宽上发送的所述上行数据采用相同的所述资源索引所对应的所述上行预编码向量进行预编码。
  40. 根据权利要求33所述的方法，其特征在于，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
    所述时频资源包括第一子带集合和第二子带集合；
    所述上行调度信令还用于指示所述第一子带集合上发送的所述上行数据采用所述资源索引所对应的所述上行预编码向量进行预编码；
    所述上行调度信令还用于指示所述第二子带集合上发送的所述上行数据采用基于码本所确定的上行预编码向量进行预编码。
  41. 根据权利要求33至40任一所述的方法，其特征在于，
    所述终端接收所述接入网设备发送的下行配置信令；
    所述下行配置信令用于配置所述下行参考信号的时频资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源和所述SRS的序列资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述SRS的序列资源和所述SRS的码资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源和所述SRS的序列资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源、所述SRS的序列资源和所述SRS的码资源。
  42. 根据权利要求41所述的方法，其特征在于，所述下行配置指令占用的时域资源和所述下行参考信号占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1＞X3。
  43. 根据权利要求41所述的方法，其特征在于，所述下行配置指令占用的时域资源、所述下行参考信号占用的时域资源和所述SRS占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    所述SRS占用所述时间单元的X4～X5个OFDM符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X5≥X4＞X3+1。
  44. 根据权利要求41所述的方法，其特征在于，所述下行配置指令所占用的时域资源、所述下行参考信号所占用的时域资源、所述SRS占用的时域资源和所述上行调度信令在相同的时间单元，所述时间单元包括n个符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    所述SRS占用所述时间单元的X4～X5个OFDM符号；
    所述上行调度信令占用所述时间单元的第Y6至Y7个符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X7≥X6＞X5≥X4＞X3+1。
  45. 根据权利要求41至44任一所述的方法，其特征在于，所述上行SRS资源占用m个频域资源，所述SRS在m个所述频域资源中跳频传输。
  46. 根据权利要求41至44任一所述的方法，其特征在于，所述下行参考信号的时频资源所占的频域带宽和所述上行SRS资源所占的频域带宽相同。
  47. 根据权利要求41所述的方法，其特征在于，所述下行配置指令用于配置所述下行参考信号的时频资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
    所述OFDM符号位置包括：所述下行参考信号占用的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
    所述PRB位置包括：所述下行参考信号占用的全部传输带宽中的PRB索引，所述若干个PRB是非连续的PRB或者连续的PRB。
  48. 根据权利要求41所述的方法，其特征在于，所述下行配置指令用于配置所述上行SRS资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
    所述OFDM符号位置包括：所述上行SRS资源对应的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
    所述PRB位置包括：所述上行SRS资源对应的全部传输带宽中的PRB索引，所述SRS在所述传输带宽中跳频传输，所述若干个PRB是非连续的PRB或者连续的PRB；
    其中，所述SRS在每个所述OFDM符号中所占用的所述传输带宽相同或不同。
  49. 一种上行数据接收方法，其特征在于，所述方法包括：
    接入网设备向终端发送下行参考信号；
    所述接入网设备接收所述终端在至少一个上行探测参考信号SRS资源上发送的SRS，不同所述上行SRS资源的所述SRS采用不同的上行预编码向量进行预编码，所述上行预编码向量是所述终端根据所述下行参考信号测量得到的；
    所述接入网设备向所述终端发送上行调度信令，所述上行调度信令用于指示至少一个所述上行SRS资源的资源索引；
    所述接入网设备接收所述终端发送的上行数据，所述上行数据是采用所述资源索引所对应的所述上行预编码向量进行预编码后的数据。
  50. 根据权利要求49所述的方法，其特征在于，不同的所述上行SRS资源对应不同的SRS端口。
  51. 根据权利要求49所述的方法，其特征在于，所述上行调度信令还用于指示所述上行数据采用的编码调制方式MCS，所述MCS是采用所述资源索引所对应的所述上行预编码向量进行预编码的所述上行数据的MCS。
  52. 根据权利要求49所述的方法，其特征在于，所述上行调度信令还用于指示所述上行数据采用的预编码方式，所述预编码方式是开环预编码方式或闭环预编码方式。
  53. 根据权利要求52所述的方法，其特征在于，所述开环预编码方式是指轮流采用不同的所述上行预编码向量对不同的时频资源上的所述上行数据进行预编码的方式；
    其中，所述不同的时频资源包括不同的物理资源块或不同的子载波或不同的正交频分复用技术OFDM符号。
  54. 根据权利要求52所述的方法，其特征在于，所述闭环预编码方式是指采用相同的所述上行预编码向量对指定时频资源上的所述上行数据进行预编码的方式。
  55. 根据权利要求49所述的方法，其特征在于，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
    所述时频资源包括至少两个子带，每个所述子带上发送的所述上行数据采用各自独立的所述资源索引所对应的所述上行预编码向量进行预编码；
    或，
    所述时频资源的带宽上发送的所述上行数据采用相同的所述资源索引所对应的所述上行预编码向量进行预编码。
  56. 根据权利要求49所述的方法，其特征在于，所述上行调度信令还用于指示所述上行数据所使用的时频资源；
    所述时频资源包括第一子带集合和第二子带集合；
    所述上行调度信令还用于指示所述第一子带集合上发送的所述上行数据采用所述资源索引所对应的所述上行预编码向量进行预编码；
    所述上行调度信令还用于指示所述第二子带集合上发送的所述上行数据采用基于码本所确定的上行预编码向量进行预编码。
  57. 根据权利要求49至56任一所述的方法，其特征在于，
    所述接入网设备向所述终端发送下行配置信令；
    所述下行配置信令用于配置所述下行参考信号的时频资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源和所述SRS的序列资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述SRS的序列资源和所述SRS的码资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源和所述SRS的序列资源；
    或，所述下行配置信令用于配置所述下行参考信号的时频资源、所述上行SRS资源、所述SRS的序列资源和所述SRS的码资源。
  58. 根据权利要求57所述的方法，其特征在于，所述下行配置指令占用的时域资源和所述下行参考信号占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1＞X3。
  59. 根据权利要求57所述的方法，其特征在于，所述下行配置指令占用的时域资源、所述下行参考信号占用的时域资源和所述SRS占用的时域资源位于相同的时间单元中，所述时间单元是时隙或子帧或传输时间间隔，所述时间单元包括n个OFDM符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    所述SRS占用所述时间单元的X4～X5个OFDM符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X5≥X4＞X3+1。
  60. 根据权利要求57所述的方法，其特征在于，所述下行配置指令所占用的时域资源、所述下行参考信号所占用的时域资源、所述SRS占用的时域资源和所述上行调度信令在相同的时间单元，所述时间单元包括n个符号；
    所述下行配置信令占用所述时间单元的第0～X1个OFDM符号；
    所述下行参考信号占用所述时间单元的X2～X3个OFDM符号；
    所述SRS占用所述时间单元的X4～X5个OFDM符号；
    所述上行调度信令占用所述时间单元的第Y6至Y7个符号；
    其中，X1＝1或2或3，X3＝X2或X2+1，n-1≥X7≥X6＞X5≥X4＞X3+1。
  61. 根据权利要求57至60任一所述的方法，其特征在于，所述上行SRS资源占用m个频域资源，所述SRS在m个所述频域资源中跳频传输。
  62. 根据权利要求57至60任一所述的方法，其特征在于，所述下行参考信号的时频资源所占的频域带宽和所述上行SRS资源所占的频域带宽相同。
  63. 根据权利要求57所述的方法，其特征在于，所述下行配置指令用于配置所述下行参考信号的时频资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
    所述OFDM符号位置包括：所述下行参考信号占用的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
    所述PRB位置包括：所述下行参考信号占用的全部传输带宽中的PRB索引，所述若干个PRB是非连续的PRB或者连续的PRB。
  64. 根据权利要求57所述的方法，其特征在于，所述下行配置指令用于配置所述上行SRS资源对应的正交频分复用技术OFDM符号位置和/或物理资源块PRB位置；
    所述OFDM符号位置包括：所述上行SRS资源对应的起始符号索引和总符号数，或者，所述起始符号索引和终止符号索引；
    所述PRB位置包括：所述上行SRS资源对应的全部传输带宽中的PRB索引，所述SRS在所述传输带宽中跳频传输，所述若干个PRB是非连续的PRB或者连续的PRB；
    其中，所述SRS在每个所述OFDM符号中所占用的所述传输带宽相同或不同。
  65. 一种上行数据发送系统，其特征在于，所述系统包括终端和接入网设备；
    所述终端包括如权利要求1至16任一所述的数据发送装置；
    所述接入网设备包括如权利要求17至32任一所述的数据接收装置。
  66. 一种信令接收方法，其特征在于，所述方法包括：
    终端接收接入网设备发送的调度授权信令，所述调度授权信令包括第一级控制信令和第二级控制信令；
    所述第一级控制信令用于指示M种传输方式中的公共调度信息；
    所述第二级控制信令用于指示所述M种传输方式中的特定调度信息；
    其中，M为大于等于2的整数。
  67. 根据权利要求66所述的方法，其特征在于，所述M种传输方式包括如下传输方式中的至少两种：
    单天线传输方式、发射分集传输方式、基于码本的开环预编码的方式、基于码本的闭环预编码的方式、基于信道互易性的开环预编码的方式和基于信道互易性的闭环预编码的方式；
    其中，所述基于码本的开环预编码的方式是轮流采用接入网设备指示的码本中的预编码向量对不同的时频资源上的上行数据进行预编码的方式；所述基于码本的闭环预编码的方式是采用接入网设备指示的码本中的预编码矩阵对指定时频资源上的所述上行数据进行预编码的方式；所述基于信道互易性的开环预编码的方式是轮流采用通过下行信道测量得到的预编码向量对不同的时频资源上的上行数据进行预编码的方式；所述基于信道互易性的闭环预编码方式是指采用通过下行信道测量得到的预编码向量对指定时频资源上的所述上行数据进行预编码的方式。
  68. 根据权利要求66所述的方法，其特征在于，所述M种传输方式包括如下传输方式中的至少两种；
    单天线传输方式、发射分集传输方式、开环预编码的方式、闭环预编码的方式。
  69. 根据权利要求66所述的方法，其特征在于，所述第一级控制信令包括：
    第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息；
    或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、第一MSC；
    或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、第一MSC，解调导频端口信息；
    或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、所述第一MSC、第一级预编码矩阵指示信息；
    或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、第一级预编码矩阵指示信息；
    或，所述第一调度资源指示信息、所述第二级控制信令的传输方式的指示信息、所述第一MSC、所述第一级预编码矩阵指示信息、功率控制命令、信道测量触发信息、SRS的资源配置信息；
    其中，所述第一MCS是第一个传输块的MCS，或者，按照假设的第一传输方式下的MCS。
  70. 根据权利要求69所述的方法，其特征在于，所述第二级控制信令包括：
    第二级预编码矩阵指示信息；
    或，第二MCS、第二级预编码矩阵指示信息；
    或，第二MCS、第二级预编码矩阵指示信息、所述解调导频端口信息；
    或，所述第二MCS、所述第二级预编码矩阵指示信息；
    或，所述第二MCS、所述第二级预编码矩阵指示信息、第二调度资源指示信息；
    其中，所述第二MCS是第二个传输块的MCS，或者，按照所述第二级控制信令的传输方式相对于所述第一传输方式的MCS的差分MCS；所述第二调度资源指示信息用于在所述第一调度资源指示信息所指示的时频资源范围内进行资源指示。
  71. 根据权利要求66至70任一所述的方法，其特征在于，所述方法还包括：
    所述终端根据所述第一级控制信令和所述第二级控制信令确定数据信道的调度信息。
  72. 根据权利要求71所述的方法，其特征在于，所述终端根据所述第一级控制信令和所述第二级控制信令确定数据信道的调度信息，包括：
    根据所述第一级控制信令中的所述第一级预编码矩阵指示信息确定双码本结构中的第一预编码矩阵W1；
    根据所述第二级控制信令中的所述第二级预编码矩阵指示信息确定所述双码本结构中的第二预编码矩阵W2；
    根据所述第一预编码矩阵W1和所述第二预编码矩阵W2确定所述数据信道所传输的数据所使用的预编码矩阵。
  73. 根据权利要求71所述的方法，其特征在于，所述第一级预编码矩阵指示信息是对应 宽带的，所述第二级预编码矩阵指示信息是对应子带的。
  74. 根据权利要求66所述的方法，其特征在于，所述第一级预编码矩阵指示信息是在接收到下一个所述第一级控制信令中的第一预编码矩阵指示信息之前持续有效的指示信息；所述第二级预编码矩阵指示信息是本次调度有效的指示信息。
  75. 根据权利要求66至69任一所述的方法，其特征在于，所述第一级控制信令和所述第二级控制信令分别占用同一时间单元中的不同OFDM符号；
    所述第一级控制信令占用所述时间单元中的前n个OFDM符号，n为正整数；
    所述第二级控制信令占用所述时间单元中的数据调度带宽。
  76. 根据权利要求66至69任一所述的方法，其特征在于，所述第一级控制信令和所述第二级控制信令分别占用不同时间单元。
  77. 根据权利要求76所述的方法，其特征在于，两个所述第一级控制信令分别占用第i个时间单元和第i+j个时间单元，存在至少两个所述第二级控制信令占用的时间单元为第i+k个时间单元，0≤k≤j，i，j，k均为整数。
  78. 根据权利要求71所述的方法，其特征在于，所述第二级控制信令用于与所述第二级控制信令之前发送的最近一个所述第一级控制信令联合确定所述数据信道的调度信息。
  79. 根据权利要求66至69任一所述的方法，其特征在于，所述第一级控制信号还用于指示所述第二级控制信令的时频位置。
  80. 根据权利要求66至69任一所述的方法，其特征在于，所述M种传输方式中存在至少一种传输方式仅对应所述第一级控制信令。
PCT/CN2017/097008 2016-08-12 2017-08-11 数据发送方法、信令发送方法、装置及系统 WO2018028657A1 (zh)

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