WO2019127488A1 - 一种通信方法、装置以及系统 - Google Patents

一种通信方法、装置以及系统 Download PDF

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Publication number
WO2019127488A1
WO2019127488A1 PCT/CN2017/120201 CN2017120201W WO2019127488A1 WO 2019127488 A1 WO2019127488 A1 WO 2019127488A1 CN 2017120201 W CN2017120201 W CN 2017120201W WO 2019127488 A1 WO2019127488 A1 WO 2019127488A1
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WIPO (PCT)
Prior art keywords
channel state
information
downlink control
control information
parameter value
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PCT/CN2017/120201
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English (en)
French (fr)
Inventor
高鲁涛
官磊
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2017/120201 priority Critical patent/WO2019127488A1/zh
Publication of WO2019127488A1 publication Critical patent/WO2019127488A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present application relates to the field of communications, and in particular, to receiving and receiving channel state request information.
  • the link adaptation technology can adaptively adjust the transmit power, the modulation and coding mode, and the frame length of the data according to the channel state to overcome the uncertainty caused by the time-varying characteristics of the channel and improve the communication effect.
  • the access network device can select different modulation and coding modes for the Physical Downlink Shared Channel (PDSCH) according to the radio channel quality. In general, the better the channel quality, the higher the modulation order and coding rate.
  • the access network device transmits the downlink reference signal at a constant power.
  • the user equipment (UE) performs downlink channel quality estimation according to the downlink reference signal to obtain channel state information (CSI), and obtains a corresponding channel quality indicator by using the channel state information (Channel Quality). Indicator, CQI) value, and report the CQI value to the access network device.
  • CSI channel state information
  • CQI channel quality indicator
  • the channel quality can be quantized into a CQI index of 0-15 for a total of 16 levels.
  • Signal to Interference plus Noise Ratio SINR
  • SINR Signal to Interference plus Noise Ratio
  • the access network device allocates a Modulation and Coding Scheme (MCS) to the UE according to the CQI index and the network condition reported by the UE, where the MCS is used to indicate the modulation mode and the coding mode used by the current PDSCH.
  • MCS Modulation and Coding Scheme
  • the technology development brings more transmission requirements, such as Ultra-Reliable and Low-Latency Communication (URLLC).
  • URLLC Ultra-Reliable and Low-Latency Communication
  • the access network device needs the UE to report the channel quality more accurately according to the corresponding requirements. How to implement more flexible and efficient channel state information request and channel state reporting to meet various transmission requirements is urgently needed to be solved. technical problem.
  • the present invention relates to a communication method, apparatus and system for implementing a more flexible and efficient channel state request and channel state reporting.
  • an embodiment of the present application provides a communication method, where the method includes:
  • the terminal device receives downlink control information from the access network device, where the downlink control information includes channel state request information, where the channel state request information is used to request channel state information;
  • the terminal device acquires first channel state information according to the combination of the at least one set of parameter values, where the first channel state information is used to indicate a set of parameter value combinations in the at least one set of parameter value combinations.
  • the terminal device can obtain the channel state information that needs to be reported according to the indication of the downlink control information, and improve the flexibility and efficiency of the channel state information request and reporting.
  • the terminal device determines, according to the downlink control information, a combination of at least one set of parameter values in a plurality of sets of parameter values, including: a channel state request included by the terminal device according to the downlink control information.
  • the information determines the at least one set of parameter value combinations.
  • the channel state request information is indicated by N bits, the N is a positive integer, or the channel state request information is indicated by the scrambling code information of the downlink control information, or the channel state request Information is indicated by the channel state request information and the scrambling code information.
  • N bits it is indicated by N bits that any one of the downlink control information can be multiplexed or a joint coding manner is used to indicate more information through one field, thereby improving downlink transmission efficiency.
  • the terminal device determines, according to the downlink control information, a combination of at least one set of parameter values in a plurality of sets of parameter values, including determining, by the terminal device, the at least the format of the downlink control information. A set of parameter values combined. Further, the channel state request information in the downlink control information is used to request channel state information, and the terminal device determines, according to the channel state request, the reporting channel state according to the format of the downlink control information. The at least one set of parameter values required is combined.
  • the determining the at least one set of parameter value combinations comprises: determining location information of the at least one set of parameter values combined in the plurality of sets of parameter value combinations to determine the at least one Group parameter value combination.
  • the location information of the at least one set of parameter values combined in the plurality of sets of parameter value combinations includes one or more of the following: obtaining the at least one set of parameter values from the plurality of sets of parameter value combinations The starting position of the combination;
  • the at least one set of parameter values is combined with the distribution information of the plurality of sets of parameter values, and the distribution information is used to indicate that the at least one set of parameter values are combined into a medium interval or an unequal interval of the plurality of sets of parameter values. At least one set of parameter values combined; and a number of sets of parameter value combinations included in the at least one set of parameter values.
  • the plurality of sets of parameter value combinations are composed of a plurality of sets of parameter values in one or more tables, the one or more tables being predefined or configured.
  • the terminal device further determines, according to the downlink control information, a first resource combination, where the first channel state information indicates a channel state of the first resource combination.
  • the first resource combination may be a carrier combination, a carrier bandwidth region (BWP) combination, or a CSI process combination.
  • the terminal device further determines, according to the downlink control information, the first resource combination, where the terminal device determines the first resource combination according to the channel state request information included in the downlink control information.
  • the channel state request information is the channel state request information used to determine the combination of the at least one set of parameter values. That is, the terminal device determines the at least one set of parameter value combinations and the corresponding first resource combination according to the channel state request information included in the downlink control information.
  • the terminal device further determines the first resource combination according to the downlink control information, where the terminal device determines the first resource combination according to a format of the downlink control information.
  • an embodiment of the present application provides a communication method, where the method includes:
  • the access network device sends downlink control information to the terminal device, where the downlink control information includes channel state request information, where the channel state request information is used to request channel state information;
  • the access network device determines second channel state information
  • the access network device sends downlink data to the terminal device according to the second channel state information
  • the downlink control information is further used to indicate at least one set of parameter values in a plurality of sets of parameter values, the parameter values being combined into a parameter value combination of channel state parameters, and the at least one set of parameter values is used to determine The channel state information.
  • the access network device can report the channel state information to the terminal device by using the downlink control information, thereby improving the flexibility and efficiency of the channel state information request and the reporting.
  • the second channel state information is determined by the access network device according to the first channel state information, where the first channel state information is received by the access network device from the terminal device.
  • the second channel state information may be CQI information, or modulation mode information, such as a CQI index or an MCS index.
  • the second channel state information is first channel state information
  • the first channel state information is received by the access network device from the terminal device.
  • the second channel state information is determined by the access network device.
  • the method before the sending network device sends the downlink control information to the terminal device, the method further includes: determining, by the access network device, the at least one set of parameter value combinations from the plurality of sets of parameter value combinations .
  • the plurality of sets of parameter value combinations comprise a set of parameter value combinations other than the at least one set of parameter value combinations.
  • the access network device determines the downlink control information according to the combination of the at least one set of parameter values.
  • the channel state request information in the downlink control information is used to indicate the at least one set of parameter value combinations.
  • the format of the downlink control information is used to indicate the at least one set of parameter values.
  • the channel state request information or the format of the downlink control information included in the downlink control information indicates the location information by indicating location information of the at least one set of parameter values combined in the multiple sets of parameter value combinations.
  • the first parameter value combination is not limited to:
  • the downlink control information is further used to indicate the first resource combination.
  • the first channel state information is used to indicate a channel state of the first resource combination, or the channel state request information is used to request a channel state of the first resource combination.
  • the channel state request information or the format of the downlink control information included in the downlink control information is used to indicate the first resource set.
  • an embodiment of the present application provides a wireless device, where the wireless device includes a processor and a receiver, where the receiver is configured to receive downlink control information from an access network device, where the downlink control information includes channel state request information.
  • the channel state request information is used to request channel state information;
  • the processor is configured to determine, according to the downlink control information, at least one set of parameter values in a plurality of sets of parameter values, where the parameter values are combined into a parameter value combination of channel configuration parameters;
  • the processor is further configured to acquire, according to the at least one set of parameter values, first channel state information, where the first channel state information is used to indicate a set of parameter value combinations in the at least one set of parameter value combinations.
  • the wireless device further includes a transmitter, the transmitter configured to send the first channel state information to the access network device.
  • the processor is configured to determine, according to the channel state request information included in the downlink control information, the at least one set of parameter values, or determine the at least one according to a format of the downlink control information.
  • the processor is configured to determine location information of the at least one set of parameter values combined in the plurality of sets of parameter value combinations to determine the at least one set of parameter value combinations.
  • the processor further determines, according to the downlink control information, a first resource combination, where the first channel state information indicates a channel state of the first resource combination.
  • the processor determines the first resource combination according to channel state request information included in the downlink control information, or determines the first resource combination according to a format of the downlink control information.
  • the embodiment of the present application further provides a wireless device, where the wireless device includes a transmitter and a processor, where:
  • the transmitter is configured to send downlink control information to the terminal device, where the downlink control information includes channel state request information, where the channel state request information is used to request channel state information;
  • the processor determines second channel state information
  • the processor sends downlink data to the terminal device according to the second channel state information
  • the downlink control information is further used to indicate at least one set of parameter values in a plurality of sets of parameter values, the parameter values being combined into a parameter value combination of channel configuration parameters, and the at least one set of parameter values is used to determine The channel state information.
  • the processor is configured to determine the at least one set of parameter value combinations from the plurality of sets of parameter value combinations.
  • the channel configuration parameter may include at least one of a modulation mode, a code rate, and a spectrum efficiency, such as a parameter reflecting a channel configuration state. Further optionally, the channel configuration parameter may further include channel quality indication CQI information, such as a CQI index.
  • the channel configuration parameter is a combination of a modulation mode, a code rate, and a spectral efficiency.
  • a set of parameter values is a combination of values for a set of modulation schemes, code rates, and spectral efficiencies.
  • the channel configuration parameter is a combination of a modulation mode, a code rate, a spectral efficiency, and channel quality indication information.
  • a set of parameter values is a combination of a set of modulation schemes, code rates, spectral efficiencies, and values of channel quality information.
  • the at least one set of parameter values is combined into a first subset of the plurality of sets of parameter values; the plurality of sets of parameter values further comprising a first subset different from the first subset
  • the second subset, the second subset and the first subset correspond to different channel state request information or different downlink control information formats.
  • the first subset and the second subset correspond to the same transmission characteristic; or the first subset and the second subset correspond to different transmission characteristics; or, the first The subset corresponds to different transmission characteristics.
  • the transmission characteristic may be one or a set of transmission characteristics.
  • the first subset and the second subset both correspond to a first block error rate BLER; or the first subset corresponds to a first block error rate BLER, and the second subset corresponds to a second error a block rate BLER, the values of the first BLER and the second BLER are different; or the first subset corresponds to a first block error rate BLER and a second block error rate BLER, the first BLER and the second BLER The values are different.
  • the at least one set of parameter value combinations corresponds to the first resource combination, and the correspondence between the at least one set of parameter value combinations and the first resource combination is predefined or configured of. Further optionally, the at least one set of parameter value combinations corresponds to a first transmission characteristic, and a correspondence between the at least one set of parameter value combinations and the first resource combination and the first transmission characteristic is predefined Or configured, the first transmission characteristic is a first BLER.
  • the present invention provides a system comprising at least the two devices provided by the third aspect above.
  • the present invention provides a wireless device, comprising: one or more processors, and a memory, wherein the memory stores a computer program, and when the processor executes the computer program, the device is implemented Any of the methods of the first aspect and/or the second aspect described above.
  • the present invention provides a computer storage medium storing a computer program on which a computer program is stored, which is implemented when the computer program is executed by a processor (or a device (terminal device or access network device)) Any of the methods of the first aspect and/or the second aspect described above.
  • the present invention provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform any of the methods provided by the first aspect and/or the second aspect.
  • the present invention provides a chip system including a processor for supporting a wireless device or device to implement the functions involved in the first aspect and/or the second aspect above, such as, for example, generating or processing Data and/or information involved in the above methods.
  • the chip system further includes a memory for holding program instructions and data necessary for the wireless device or device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present invention provides a chip, the chip includes a processing module and a communication interface, the processing module is configured to control the communication interface to communicate with an external, and the processing module is further configured to implement the first aspect and / or any of the methods provided in the second aspect.
  • the access network device may use the downlink control information to instruct the terminal device to perform channel state information determination and reporting, thereby improving system processing efficiency and improving channel state feedback. Flexibility and accuracy.
  • FIG. 1 is a schematic diagram of a possible application scenario of an embodiment of the present application
  • FIG. 2 is a schematic diagram of a possible structure of an access network device according to an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart diagram of a possible communication method provided by an embodiment of the present application.
  • FIG. 5 shows a possible indication manner of downlink control information provided by an embodiment of the present application
  • FIG. 6 is a schematic diagram showing a possible structure of a wireless device provided by an embodiment of the present application.
  • the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
  • “a” means a single individual, and does not mean that it can only be one individual, and cannot be applied to other individuals.
  • Multiple in this application means two or more.
  • the character "/" generally indicates that the contextual object is an "or” relationship.
  • FIG. 1 is a schematic diagram of a possible application scenario in the embodiment of the present application.
  • the communication system in the application scenario includes: an access network device, and one or more terminal devices.
  • the access network device and the terminal device can communicate through one or more air interface technologies.
  • Communication system It can be applied to LTE systems or other wireless communication systems using various radio access technologies, such as code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division multiple access, single carrier frequency division.
  • a system of access technologies such as multiple access.
  • it can also be applied to the subsequent evolution system using the LTE system, such as the fifth generation 5G system or the NR system.
  • Access network device may be a base station, or an access point, or a network side device, or may refer to a device in the access network that communicates with the wireless terminal over one or more sectors on the air interface.
  • the access network device can be used to convert received air frames and IP packets to each other as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the access network device can also coordinate attribute management of the air interface.
  • the access network device may be a Global System of Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA), or may be a broadband code division.
  • GSM Global System of Mobile communication
  • BTS Base Transceiver Station
  • CDMA Code Division Multiple Access
  • a base station (NodeB, NB) in the Wideband Code Division Multiple Access (WCDMA) may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in Long Term Evolution (LTE), or a relay station or An access point, or a base station in a future 5G network, such as gNB, is not limited herein.
  • Evolutional Node B, eNB or eNodeB evolved base station
  • LTE Long Term Evolution
  • gNB Long Term Evolution
  • TRP Transmission Reception Point
  • the access network device may also be divided into a Control Unit (CU) and a Data Unit (DU).
  • each DU may exist, where each DU and The measurement reporting method described in the embodiment of the present application can be used by the terminal.
  • the difference between the CU-DU separation scenario and the multi-TRP scenario is that the TRP is only a radio unit or an antenna device, and the protocol stack function can be implemented in the DU.
  • the physical layer function can be implemented in the DU.
  • Terminal device may be a wireless terminal or a wired terminal, the wireless terminal may be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem. .
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network.
  • RAN Radio Access Network
  • the wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, and a remote terminal.
  • the access terminal, the user terminal (User Terminal), the user agent (User Agent), and the user device (User Device or User Equipment) are not limited herein.
  • Carrier A physical resource in the frequency domain. For a terminal device, it is generally called a component carrier (CC).
  • CC component carrier
  • a component carrier is a frequency domain resource of a serving cell.
  • Bandwidth area Bandwidth Part (BWP).
  • Multiple physical resource blocks in the frequency domain are generally configured by the access network device for the terminal device.
  • the terminal device receives or transmits data within the BWP.
  • the control resource transmission as an example, at least one control resource set is included in one BWP, and the control resource set includes a frequency domain resource that does not exceed multiple physical resource blocks included in the frequency domain of the BWP.
  • High-level signaling Different from physical layer signaling, it can be a Master Information Block (MIB), a System Information Block (SIB), or a Radio Resource Control (RRC) signaling, or Other high-level signaling with similar characteristics.
  • MIB Master Information Block
  • SIB System Information Block
  • RRC Radio Resource Control
  • Channel status information Channel attributes of the communication link. For example, it can describe the weakening factor of the signal on each transmission path, ie the value of each element in the channel gain matrix, such as Scattering, fading, multipath fading or shadowing fading, distance attenuation (power Decay of distance) and other information.
  • the channel state information in the embodiment of the present application may include, but is not limited to, one or more of the following information:
  • CQI Channel Quality Indicator
  • the CQI can be used to reflect the channel quality, such as the Physical Downlink Shared Channel (PDSCH).
  • the channel quality may be represented by 0-N. 0 indicates the worst channel quality, N indicates the best channel quality, and N is a positive integer, such as 15.
  • the RI information can be used to indicate the number of valid data layers of the channel, or the RI information can be used to indicate the number of Code Words (CWs) that the terminal device can currently support.
  • CWs Code Words
  • the PMI information can be used to indicate an index of the codebook set. That is, in the multi-antenna technique, for example, the Multiple-Input Multiple-Output (MIMO) technique, precoding based precoding is performed in the baseband processing of the channel physical layer. For example, the terminal device can indicate the amount of precoding matrix through the PMI information.
  • MIMO Multiple-Input Multiple-Output
  • the terminal device may send channel state information to the access network device on a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).
  • the access network device may determine the radio channel condition of the current PDSCH or the PUSCH according to the channel state information, and then complete the scheduling for the PDSCH. For example, the access network device may determine the adaptive modulation and modulation (AMC) based on the channel state information. ), Modulation and Coding Scheme (MCS), code rate or amount of data for uplink transmission or downlink transmission.
  • AMC adaptive modulation and modulation
  • MCS Modulation and Coding Scheme
  • the access network device 102 is capable of performing the method provided by the embodiments of the present application.
  • the access network device 102 may include a controller or processor 201 (hereinafter, the processor 201 is taken as an example) and a transceiver 202.
  • Controller/processor 201 is sometimes also referred to as a modem processor.
  • Modem processor 201 can include a baseband processor (BBP) (not shown) that processes the digitized received signal to extract information or data bits conveyed in the signal.
  • BBP baseband processor
  • DSPs digital signal processors
  • ICs integrated circuits
  • the transceiver 202 can be used to support the transmission and reception of information between the access network device and the terminal device, and to support radio communication between the terminal devices.
  • the processor 201 can also be used to perform functions of communication between various terminal devices and other access network devices.
  • On the uplink the uplink signal from the terminal device is received via the antenna, coordinated by the transceiver 202, and further processed by the processor 201 to recover the traffic data and/or signaling information transmitted by the terminal device.
  • traffic data and/or signaling messages are processed by the terminal device and modulated by the transceiver 202 to generate downlink signals for transmission to the terminal device via the antenna.
  • the access network device can also include a memory 203 that can be used to store program code and/or data for the access network device.
  • the transceiver 202 can include separate receiver and transmitter circuits, or the same circuit can implement transceiving functions.
  • the access network device may further include a communication unit 204 for supporting the access network device to communicate with other network entities. For example, it is used to support the access network device to communicate with an access network device of the core network or the like.
  • the access network device may further include a bus.
  • the transceiver 202, the memory 203, and the communication unit 204 can be connected to the processor 201 through a bus.
  • the bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus may include an address bus, a data bus, a control bus, and the like.
  • FIG. 3 is a schematic diagram of a possible structure of a terminal device in the above communication system.
  • the terminal device is capable of performing the method provided by the embodiment of the present application.
  • the terminal device may be any one of the one or more terminal devices in FIG.
  • the terminal device includes a transceiver 301, an application processor 302, a memory 303, and a modem processor 304.
  • the transceiver 301 can condition (e.g., analog convert, filter, amplify, upconvert, etc.) the output samples and generate an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. On the downlink, the antenna receives the downlink signal transmitted by the access network device. Transceiver 301 can condition (eg, filter, amplify, downconvert, digitize, etc.) the signals received from the antenna and provide input samples.
  • Modem processor 304 also sometimes referred to as a controller or processor, may include a baseband processor (BBP) (not shown) that processes the digitized received signal to extract information conveyed in the signal Or data bits.
  • BBP baseband processor
  • the BBP is typically implemented in one or more numbers within the modem processor 304 or as a separate integrated circuit (IC), as needed or desired.
  • a modem processor 304 may include an encoder 3041, a modulator 3042, a decoder 3043, and a demodulator 3044.
  • the encoder 3041 is for encoding the signal to be transmitted.
  • encoder 3041 can be used to receive traffic data and/or signaling messages to be transmitted on the uplink and to process (eg, format, encode, or interleave, etc.) the traffic data and signaling messages.
  • Modulator 3042 is used to modulate the output signal of encoder 3041.
  • the modulator can perform symbol mapping and/or modulation processing on the encoder's output signals (data and/or signaling) and provide output samples.
  • a demodulator 3044 is used to demodulate the input signal.
  • demodulator 3044 processes the input samples and provides symbol estimates.
  • a decoder 3043 is operative to decode the demodulated input signal.
  • the decoder 3043 deinterleaves, and/or decodes the demodulated input signal and outputs the decoded signal (data and/or signaling).
  • Encoder 3041, modulator 3042, demodulator 3044, and decoder 3043 may be implemented by a composite modem processor 304. These units are processed according to the radio access technology employed by the radio access network.
  • Modem processor 304 receives digitized data representative of voice, data or control information from application processor 302 and processes the digitized data for transmission.
  • the associated modem processor can support one or more of a variety of wireless communication protocols of various communication systems, such as LTE, new air interface, Universal Mobile Telecommunications System (UMTS), high speed packet access (High Speed) Packet Access, HSPA) and more.
  • UMTS Universal Mobile Telecommunications System
  • High Speed Packet Access High Speed Packet Access
  • one or more memories may also be included in the modem processor 304.
  • modem processor 304 and the application processor 302 may be integrated in one processor chip.
  • the memory 303 is configured to store program codes (sometimes referred to as programs, instructions, software, etc.) and/or data for supporting communication of the terminal device,
  • the memory 203 or the memory 303 may include one or more storage units, for example, may be a processor 201 for storing program code or a storage unit inside the modem processor 304 or the application processor 302, or may Is an external storage unit separate from the processor 201 or the modem processor 304 or the application processor 302, or may also be a storage unit including the processor 201 or the modem processor 304 or the application processor 302 and with the processor 201 or modem
  • the processor 304 or the application processor 302 is a separate component of an external storage unit.
  • the processor 201 and the modem processor 304 may be the same type of processor or different types of processors. For example, it can be implemented in a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and a field programmable gate array ( Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, other integrated circuit, or any combination thereof.
  • the processor 201 and the modem processor 304 can implement or perform various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present application.
  • the processor may also be a combination of computing function devices, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, or a system-on-a-chip (SOC) or the like.
  • sending a downlink (uplink) channel may refer to transmitting data or information carried on a downlink (uplink) channel, where the data or information may refer to channel-encoded data or information.
  • the periodic CSI reporting time is configured by the high-layer signaling, and the UE reports the physical uplink control channel (PUCCH).
  • the aperiodic CSI reporting is performed by the base station to request CSI, for example, by using the channel state request in the downlink control information.
  • the information is implemented, for example, by a request field (1-5 bits), and the UE reports the CSI to the base station through the PUSCH.
  • the downlink control information includes a 2-bit request field, and is used to indicate that the CSI of the corresponding resource is reported according to the high layer signaling.
  • the high layer signaling is used to instruct the terminal device to report the CQI according to the corresponding CQI table.
  • the predefined CQI table may include Table 1 and/or Table 2 below, wherein the modulation mode supported by Table 1 is 64QAM, and the modulation mode supported by Table 2 is 256QAM. It should be noted that when a combination of parameter values that may be involved in the embodiment of the present application is expressed in a tabular form, a set of values included in each row in the following table is referred to as a set of parameter value combinations.
  • New technologies are proposed in the LTE evolution system or the NR system, and new technologies face more demands.
  • URLLC has many different reliability requirements: the target block error rate (BLER) is 10-4 and 10-5; for example, both LTE and NR systems face more different use cases or more.
  • the antenna configuration, etc. allows the UE to obtain a larger SINR range for CSI measurements.
  • Higher SINR values can support higher modulation modes.
  • Different SINR intervals may support different modulation modes.
  • different ranges of SINR [-8 0] and [-8, 18] can support different modulation mode ranges.
  • the maximum support is 64QAM or the maximum support is 256QAM; different use cases may also be in different SINR intervals.
  • An embodiment of the present application provides a communication method, in which a terminal device receives downlink control information from an access network device, where the downlink control information includes channel state request information, and the channel state request information is used to request channel state information.
  • the terminal device determines, according to the downlink control information, at least one set of parameter values in a plurality of sets of parameter values, the parameter values being combined into a parameter value combination of channel configuration parameters; the terminal device according to the at least one And combining the group parameter values to obtain first channel state information, where the first channel state information is used to indicate a set of parameter values in the at least one set of parameter value combinations; and the access network device is configured according to the first channel
  • the status information is used to transmit downlink data.
  • the access network device may use the downlink control information to instruct the terminal device to perform channel state information determination and reporting, thereby improving system processing efficiency and improving channel state feedback flexibility and accuracy.
  • the expressions “first”, “second” and the like in the embodiments of the present application do not represent the limitation in the order, and are used only for convenience of expressing or identifying different information.
  • the “pre-definition or configuration” involved in the embodiment of the present application may be specified in a standard or a protocol, or may be predetermined by an access network device, and notified to the terminal device as needed.
  • FIG. 4 shows an implementation manner of the communication method provided by the embodiment of the present application. The solution provided by the embodiment of the present application is described below with reference to FIG. 4 .
  • Step 401 The access network device sends downlink control information to the terminal device, where the downlink control information includes channel state request information, where the channel state request information is used to request channel state information.
  • This step can be performed by the transceiver 202 of the access network device.
  • the downlink control information may be control information carried in a downlink control channel.
  • the access network device sends a downlink control channel, such as a PDCCH, an enhanced physical downlink control channel, or another type of control channel, to the terminal device, where the downlink control channel carries control information.
  • the control information may be scheduling information of a data channel (eg, PDSCH, PUSCH, or other data channel), including resource allocation information of a data channel carrying a transport block, a modulation and coding scheme, and a hybrid automatic repeat request (Hybrid Automatic Repeat Request) , HARQ), etc.
  • a data channel eg, PDSCH, PUSCH, or other data channel
  • Hybrid Automatic Repeat Request Hybrid Automatic Repeat Request
  • Step 402 The terminal device receives the downlink control information.
  • This step can be performed by the transceiver 301 of the terminal device or by the processor 304 controlling the transceiver 301.
  • Step 403 The terminal device determines, according to the downlink control information, at least one set of parameter value combinations in the plurality of sets of parameter value combinations.
  • the determining the combination of the at least one set of parameter values in the plurality of sets of parameter values may be a set of parameter values corresponding to the second parameter of the set of parameter values determining the first parameter.
  • This step can be performed by the processor 304 of the terminal device.
  • the parameter values are combined into a parameter value combination of channel configuration parameters.
  • the first parameter and the second parameter are parameters in the channel configuration parameter, and the first parameter is different from the second parameter; further, the second parameter may be a channel parameter other than the first parameter Any one or more parameters other than those.
  • the channel configuration parameter may be at least one of a parameter that reflects a channel configuration state, such as a modulation, a code rate (abbreviation code rate), and a spectrum efficiency (abbreviated as a spectral efficiency).
  • the channel configuration parameter may further include channel quality indication CQI information, such as a CQI index, where the CQI information is used to indicate a channel status.
  • the type and number of parameters included in the channel configuration parameters may be predefined or configured.
  • the channel configuration parameters configured in the existing LTE protocol are CQI information, modulation mode, code rate, and spectral efficiency.
  • the modulation method may be a modulation method for loading a signal to be transmitted to a high frequency signal, for example: quadrature amplitude modulation QAM, etc.; in the channel coding, a letter of a K symbol size
  • the source data block is coded into a codeword of N symbol size, and K/N can be called a code rate, which is also called coding efficiency.
  • Spectral efficiency also known as spectral efficiency, can refer to the total amount of information that can be transmitted under bandwidth limitations in digital communication systems. It is a measure of the efficiency of use that physical layer communication protocols can achieve under limited spectrum.
  • the first parameter may be CQI information
  • the second parameter may be one or more of a modulation mode, a code rate, and a spectral efficiency.
  • the multiple sets of parameter value combinations may be predefined or configured, and may be determined by a standard or a protocol. Specifically, the multiple sets of parameter value combinations may be all parameter value combinations included in one set, or may be a combination of all parameter values included in multiple sets. Each of the sets may be pre-defined or configured in a form or other form. That is, one or more tables for channel state reporting are configured in the standard or protocol, and corresponding to the channel configuration parameters, on the premise that the set of predefined or configured channel configuration parameters is referred to as header information.
  • a set of values is referred to as a set of parameter value combinations, and each table may be composed of one or more sets of values corresponding to the channel configuration parameters, where the plurality of sets of values are included in the table, the plurality of sets of values are The table is arranged in the order of the parameter values of one of the channel configuration parameters.
  • the channel configuration parameter is composed of four parameters, and the four parameter values of the existence relationship of the four parameters are referred to as a set of parameter value combinations.
  • the parameter values of the plurality of sets of channel configuration parameters in the table are arranged from small to large according to the parameter value of the first parameter, or are arranged in order from large to small, and Table 1 is taken as an example, and the plurality of parameter values in Table 1 are used.
  • the values of the CQI index are arranged in order from small to large (0-15).
  • the embodiment of the present application does not specifically limit the manner in which the multiple sets of parameter value combinations exist.
  • Step 404 The terminal device acquires first channel state information according to the combination of the at least one set of parameter values, where the first channel state information is used to indicate a set of parameter values in the at least one set of parameter value combinations; And transmitting the first channel state information to the access network device.
  • the first channel state information may be CQI information; and optionally, the CQI information may be a CQI index.
  • This step can be performed by the processor 304 of the terminal device.
  • the terminal device acquires the first channel state information according to the at least one set of parameter values, and may be directly acquired according to a certain rule, or randomly acquired, or acquired according to specific information.
  • the terminal device may determine a set of parameter value combinations from the at least one set of parameter value combinations according to a preset rule, and obtain the first channel state information, where the preset The rule may be pre-defined or configured, pre-notified by the access network device, randomly obtained, or obtained according to its own capability information, and the capability information may be the highest modulation mode, the highest code rate, etc. that the terminal device can support. .
  • the terminal device before step 404, the terminal device further determines a channel quality, and in step 404, referring to the determined channel quality, acquiring the first according to the at least one set of parameter values. Channel status information.
  • the channel quality may be a parameter value or a combination of multiple parameter values capable of reflecting channel state information.
  • the channel quality is obtained by the terminal device performing channel estimation according to the downlink reference signal sent by the access network device. Specifically, the terminal device determines a value of a Single to Interference and Noise Ratio (SINR) of each subcarrier in the bandwidth according to the downlink reference signal, and then uses a mapping algorithm, for example, an index SINR mapping based on mutual information (Mutual Information). Based exponential SNR Mapping, MIESM) algorithm, estimating the average SINR value of the bandwidth channel quality.
  • SINR Single to Interference and Noise Ratio
  • the terminal device determines, according to the SINR value, a set of parameter value combinations in the at least one set of parameter value combinations, and acquires the first channel state information.
  • the terminal device further determines a transmission characteristic corresponding to the at least one set of parameter value combinations, or the terminal device further determines a transmission characteristic according to the downlink control information, where the terminal device is configured according to the SINR And the transmission characteristic, determining a set of parameter value combinations in the at least one set of parameter value combinations, and acquiring the first channel state information.
  • the first channel state information is CQI information in the set of parameter value combinations, or is CQI information corresponding to the set of parameter value combinations.
  • the CQI information may be a CQI index.
  • the method for determining the channel quality of the terminal device is not limited, and any channel quality estimation algorithm used in the prior art may be used, or the future LTE evolution system or the NR system may be adopted.
  • Channel quality estimation technique Any manner that can be used to determine channel quality such that the terminal device feeds back channel state information to the access network device can be applied to the embodiments of the present application.
  • Step 405 The access network device determines second channel state information.
  • This step may be performed by the transceiver 202 of the access network device, or by the processor 201 of the access network device, or by the processor 201 of the access network device.
  • the access network device determines the second channel state information by itself.
  • the access network device determines the second channel state information by itself. Specifically, the access network device may be determined according to a predefined or configured rule.
  • the second channel state information may be modulation mode information, such as an MCS index.
  • the second channel state information may further include a transport block size TBS.
  • the access network device acquires the channel state information according to the first channel state information sent by the terminal device, and the downlink data transmission information, where the downlink data transmission information may be One or more of the amount of data sent, the size of resources that can be used, and so on.
  • the access network device receives the first channel state information, where the first channel state corresponds to the first modulation and coding mode, and determines that the amount of downlink data to be sent is less than a first threshold, and/or is available for downlink transmission.
  • the resource size is smaller than the second threshold, and the access network device determines to use the second modulation and coding mode to send downlink data, where the second channel state information corresponds to the second modulation and coding mode.
  • the access network device sends the second channel state information to the terminal device, where the terminal device determines the second modulation and coding mode according to the second channel state information, and further, the terminal The device determines the transport block size of the downlink data.
  • the second channel state information may be modulation mode information, such as an MCS index.
  • the second channel state information may further include a transport block size TBS.
  • the terminal device sends the first channel state information to the access network device, and the access network device receives the first channel state information from the terminal device, as a The second channel state information is described.
  • Step 406 The access network device sends downlink data to the terminal device according to the second channel state information.
  • This step can be performed by the transceiver 202 of the access network device.
  • the access network device determines, according to the second channel state information, a second modulation and coding mode and a transport block size, for sending downlink data.
  • the downlink data adopts the second modulation and coding manner and a corresponding transport block size.
  • the communication method implemented by one or more of the foregoing steps may enable the access network device to indicate, by using the downlink control information, the terminal device to perform channel state information determination and reporting, thereby improving system processing efficiency and improving channel state.
  • the flexibility and accuracy of feedback may enable the access network device to indicate, by using the downlink control information, the terminal device to perform channel state information determination and reporting, thereby improving system processing efficiency and improving channel state.
  • the determining operation of the access network device involved in the embodiment of the present application may be performed by the processor 201, and the transmitting and receiving operations of the access network device may be performed by the transceiver 202, or the transceiver 202 may be controlled by the processor 201.
  • the obtaining operation of the access network device may be performed by the transceiver 202 or the processor 201, depending on the acquiring manner; the determining operation of the terminal device may be performed by the processor 304, and the obtaining operation of the terminal device may be performed by the processor 304 or
  • the transceiver 301 executes or is controlled by the processor 304 to control the transceiver 301.
  • the transceiver operation of the terminal device can be performed by the transceiver 301.
  • the method further includes the step 400: the access network device determines the at least one set of parameter value combinations from the plurality of sets of parameter value combinations.
  • the access network device determines the at least one set of parameter value combinations from the plurality of sets of parameter value combinations. The explanation of the multiple sets of parameter value combinations is explained above.
  • the at least one set of parameter value combinations may be the first subset of the plurality of sets of parameter value combinations.
  • the plurality of sets of parameter value combinations can include a plurality of subsets consisting of a combination of one or more of the plurality of sets of parameter values.
  • the partitioning of the plurality of subsets may be partitioned according to resource combinations and/or transmission characteristics.
  • the resource combination is a resource combination corresponding to the channel state request by the access network device, where the transmission characteristic is a transmission characteristic by which the terminal device determines and reports or feeds back the channel state information, where the transmission characteristic may include but not It is limited to one or more of a block error rate (BLER), a modulation mode range, and the like.
  • the combination of resources may include one or more resources, and the transmission characteristics may include one or more transmission characteristics.
  • the multiple sets of parameter value combinations may be divided in different corresponding manners or corresponding rules according to corresponding different resource combinations and/or transmission characteristics to obtain multiple different sets each including multiple subsets. That is, the plurality of subsets correspond to the same or different resource combinations and/or one or more transmission characteristics, and are not actually divided, but are used as a plurality of candidate subsets for the access network device according to actual communication needs. Make a choice. For example, subset 1 and subset 2 correspond to different resource combinations, and the same first transmission characteristic and/or different second transmission characteristics, etc.; for example, subset 1 and subset 2 correspond to the same resource combination and different transmissions. characteristic.
  • the corresponding manner or corresponding rule may be predefined or configured, such as specified in a standard or protocol.
  • the multiple sets of parameter value combinations are divided according to resource combinations, that is, the multiple sets of parameter value combinations include multiple subsets, and each subset of the multiple subsets corresponds to a corresponding resource combination. Or, the multiple subsets respectively correspond to different resource combinations, and the corresponding relationship may be predefined or configured.
  • the type of the resource combination may be any one of other possible resource combinations such as a carrier combination, a carrier BWP combination, and a CSI process.
  • CSI process when link adaptation is performed on the access network device side, link adaptation is generally required based on the CSI report provided by the terminal device side.
  • the access network device side incorporates the data transmission decision of the neighboring transmission point (ie, the adjacent access network device) into the rate selection consideration, and the terminal device needs to provide multiple CSI reports respectively.
  • the process corresponding to the multiple CSI reports described above is called a CSI process.
  • the plurality of sets of parameter value combinations are partitioned according to a carrier combination.
  • the multiple subsets respectively correspond to different carrier combinations.
  • subset 1 corresponds to a first carrier combination
  • subset 2 corresponds to a second carrier combination, the first carrier combination and the second carrier combination being different.
  • one carrier combination includes one or more carriers.
  • the plurality of sets of parameter value combinations are divided according to a carrier bandwidth area BWP combination.
  • the plurality of subsets respectively correspond to different carrier BWP combinations.
  • subset 1 corresponds to a first carrier BWP combination
  • subset 2 corresponds to a second carrier BWP combination.
  • the first carrier BWP combination and the second carrier BWP combination are different.
  • one carrier BWP combination includes one or more carrier BWPs, and the multiple carrier BWPs may be located in the same or different carriers.
  • the plurality of sets of parameter value combinations are divided according to a CSI process combination.
  • the multiple subsets respectively correspond to different CSI process combinations.
  • subset 1 corresponds to a first set of CSI processes
  • subset 2 corresponds to a second set of CSI processes.
  • the first set of CSI processes and the second set of CSI processes are different.
  • a group of CSI processes contain one or more CSI processes.
  • the multiple sets of parameter value combinations are divided according to transmission characteristics, that is, the multiple sets of parameter value combinations include multiple subsets, and each of the multiple subsets corresponds to a corresponding transmission characteristic.
  • the value, or the plurality of subsets respectively correspond to different transmission characteristic values, the corresponding relationship being predefined or configured.
  • the transmission characteristic may be one or more of a Block Error Rate (BLER), a modulation mode range, and the like.
  • the BLER value may be a value of 10 -4 , 10 -5 or lower;
  • the modulation mode may be a modulation mode up to 64QAM, 256QAM or higher, and the value of the transmission characteristic is not specifically limited.
  • the transmission characteristics in the technology and the possible transmission characteristics and corresponding transmission characteristic values in the future LTE evolution system or NR system can be used in the embodiments of the present application.
  • the following is an example of the BLER and/or the mode of the transmission mode.
  • the following is a specific limitation of the transmission characteristics in the embodiment of the present application. Other possible transmission characteristics are still within the scope of protection of the embodiments of the present application.
  • the transmission characteristic is a first transmission characteristic, such as a BLER or a modulation mode range.
  • the different first transmission characteristic values correspond to the same or different subset, and the correspondence between the first transmission characteristic value and the subset may be predefined or configured.
  • the subset 1 of the plurality of sets of parameter value combinations corresponds to BLER1
  • Subset 2 corresponds to BLER2:
  • the subset 1 and the subset 2 may comprise one or more sets of the same parameter value combination, but the subset 1 and the subset 2 are different. Further, the subset 1 and the subset 2 may correspond to the same or different second transmission characteristics. For example, subset 1 and subset 2 support the same range of modulation schemes.
  • the subset 1 of the plurality of parameter value combinations corresponds to In the first range
  • subset 2 corresponds to the second range:
  • the subset 1 and the subset 2 may include one or more sets of the same parameter value combination, but the subset 1 and the subset 2 are different. Further, the subset 1 and the subset 2 may correspond to the same or different second transmission characteristics. For example, subset 1 and subset 2 have the same BLER value.
  • the transmission characteristic is a plurality of transmission characteristics
  • the subset is divided into a combination of a plurality of transmission characteristic values, for example, a combination of the first and second transmission characteristic values.
  • the correspondence between the transmission characteristic value combination and the subset may be predefined or configured.
  • the multiple sets of parameter value combinations may include four subsets, subsets. 1 corresponds to BLER1 and the first range, subset 2 corresponds to BLER1 and the second range, subset 3 corresponds to BLER2 and the first range, and subset 4 corresponds to BLER2 and the second range.
  • subsets 1, 2, 3, and 4 are 4 subsets that are not identical, and the incompleteness herein means that there are at least two different subsets. It should be noted here that the subsets 1, 2, 3, 4 can still be the same subset in the presence of the third transmission characteristic for further combining the first and second transmission characteristics for the subset division.
  • the multiple sets of parameter value combinations are divided according to resource combination and transmission characteristics, that is, the multiple sets of parameter value combinations include multiple subsets, and the multiple subsets correspond to corresponding resource combinations. And a transmission characteristic, or the plurality of subsets respectively correspond to different combinations, the combination being a combination of resource combination and transmission characteristics, the corresponding relationship being predefined or configured. Specifically, the combination of the plurality of subsets corresponding to different resource combinations and transmission characteristics respectively indicates that a combination of resource combinations and transmission characteristics corresponding to each subset is different from other subsets of the plurality of subsets.
  • the meanings and explanations of the resource combination and transmission characteristics are referred to the first and second alternative designs described above, and are not described herein again.
  • the combination of resource combination and transmission characteristics is provided on the premise that there are multiple possible types of resource combinations that can be used to divide multiple sets of parameter value combinations and multiple possible transmission characteristics for dividing multiple sets of parameter value combinations.
  • the characteristics of a particular resource type may be replaced by a combination of any one or more resource types, and features relating to specific transmission characteristics may be replaced with any one or more of the transmission characteristics.
  • the multiple sets of parameter value combinations are divided in a manner that the resource combination is a carrier combination and a transmission characteristic is a BLER.
  • the plurality of sets of parameter values includes a first subset and a second subset.
  • the first subset and the second subset respectively correspond to a first block error rate BLER; further optionally, the first subset and the second subset correspond to different carrier combinations or resources. combination.
  • the first subset corresponds to a first block error rate BLER
  • the second subset corresponds to a second block error rate BLER
  • the values of the first BLER and the second BLER are different
  • the first subset and the second subset correspond to different or identical carrier combinations or resource combinations.
  • the first subset corresponds to a first block error rate BLER and a second block error rate BLER, where values of the first BLER and the second BLER are different; further optionally, the first subset is It can also correspond to multiple different carrier combinations or resource combinations at the same time.
  • the plurality of sets of parameter value combinations include at least subset 1 and subset 2.
  • the subset 1 corresponds to the first carrier combination and the BLER1
  • the subset 2 may correspond to the second carrier combination and the BLER1, or to the first carrier combination and the BLER2.
  • the subset 1 may also correspond to the third carrier combination and the BLER2 at the same time.
  • the third carrier combination is different from the first carrier combination and the second carrier combination.
  • the specific resource combinations and/or transmission characteristics involved in the exemplified parts of the above three alternative designs may be replaced by other possible resource combination types or transmission characteristics.
  • the embodiments of the present application are limited in part to the length of the disclosure, and all possible implementations are not enumerated, but all alternative or alternative ways are within the scope of the embodiments of the present application.
  • the carrier combination can be replaced with a carrier BWP combination
  • the BLER can be replaced with a modulation mode range or the like.
  • the access network device determines the at least one set of parameter value combinations from the plurality of sets of parameter value combinations for instructing the terminal device to determine channel state information that needs to be reported or fed back according to the at least one set of parameter value combinations.
  • the access network device may determine, according to a predefined or configured rule, the at least one set of parameter value combinations from the plurality of sets of parameter value combinations.
  • the rule may be related to a capability of the terminal device, a target BLER value, a signal to noise ratio, and the like.
  • the access network device After the access network device determines that the at least one set of parameter values is combined, the at least one set of parameter values needs to be combined to the terminal device, so that the terminal device determines channel state information of the corresponding resource combination that needs to be reported or fed back.
  • the access network device sends downlink control information to the terminal device, where the downlink control information is used to indicate the determined combination of the at least one set of parameter values.
  • the channel state request information in the downlink control information (for example, by using at least one bit and/or scrambling code information as channel state request information) and at least one of formats of the downlink control information may be indicated.
  • the terminal device After receiving the downlink control information, the terminal device determines, according to the indication of the downlink control information, the at least one set of parameter value combinations.
  • the correspondence between the indication of the downlink control information and the combination of the at least one set of parameter values is predefined or configured, such as specified in a standard or protocol.
  • the terminal device determines, according to the corresponding relationship, the at least one set of parameter values after receiving the downlink control information.
  • the specific correspondence is exemplified below by way of example.
  • the plurality of sets of parameter values are combined in one table or a plurality of tables or in a similar manner (herein similar manners, the other may represent the plurality of sets of parameter value combinations, and the plurality of sets of parameter value combinations may be provided
  • the following table is taken as an example.
  • the downlink control information indicates that the terminal device acquires at least one set of parameter value combinations in the table, for example, the downlink control information indicates the at least one Group parameter values are combined in the plurality of sets of parameter values, that is, location information in the table, the location information includes one or more of the following: obtaining the at least one from the plurality of sets of parameter value combinations a starting position of the group parameter value combination; the at least one set of parameter values combining distribution information in the plurality of sets of parameter values, the distribution information being used to indicate that the at least one set of parameter values are combined into the plurality of sets of parameters And a combination of at least one set of parameter values having a medium or non-equal interval, optionally, an interval value; and a number of groups of parameter value combinations included in the at least one set of parameter values.
  • any one or more of the location information may also be pre-defined or configured by the terminal device, and the terminal device can be determined in advance, for example, the number of
  • the indication of the location information may be an implicit or displayed indication; in the case of an implicit indication, the location information has a corresponding relationship with the indication of the downlink control information, and the corresponding relationship is predefined or configured.
  • the terminal device After receiving the downlink control information, the terminal device determines the at least one set of parameter value combinations according to the indication of the downlink control information, and further combines the resources according to the foregoing according to the at least one set of parameter value combinations.
  • Corresponding relationship between the transmission and the transmission characteristics determining a resource combination that needs to be reported or fed back the channel state, and/or a transmission characteristic according to the transmission; and in the case of displaying the indication, the specific location information may be indicated by the downlink control information, And causing the terminal device to determine the at least one set of parameter value combinations by using the location information.
  • the downlink control information needs to instruct the terminal device to acquire the plurality of tables.
  • At least one of the tables, the at least one table corresponding to the at least one set of parameter values for example, an index of the corresponding table, or other possible information.
  • the correspondence between the indication of the downlink control information and the at least one set of parameter values is predefined or configured, and the terminal device according to the corresponding The relationship determines at least one table corresponding to the at least one set of parameter values.
  • the multiple sets of parameter value combinations described above may be divided into subsets according to various manners. After the multiple subsets are divided according to a certain manner, the multiple subsets may pass the downlink control information. An indication to instruct the terminal device to perform corresponding reporting or feedback.
  • the at least one set of parameter values is indicated by channel state request information in the downlink control information.
  • the channel state request information may be at least one of a channel state information request field and scrambling code information composed of at least one bit.
  • the N bits in the downlink control information are predefined or configured as channel state request information, and the N bits may be referred to as a CSI request field.
  • the bit status of the N bits is used to indicate a subset of the plurality of parameter value combinations.
  • the N may be any positive integer, and the size of the N may be determined by combining the plurality of sets of parameter values by a plurality of subsets obtained by a specific manner, or may be defined or configured in advance.
  • the N bits may be N bits that are added after adding a bit according to the existing downlink control information format in the prior art, or may be existing in the prior art.
  • the existing CSI request field (N1 bits) in the downlink control information format is combined with the newly added (N-N1) bits, and the newly added bit may be used to multiplex the existing downlink control information.
  • the other field in the format may be a newly added field based on the existing downlink control information format, or a channel state information request field in the downlink control information format existing in the prior art, where the channel state request field passes.
  • the joint coding mode simultaneously indicates the channel state request and the at least one set of parameter values, such as the CSI request field in the downlink control information format 1 or 4, or in the downlink control information format existing in the prior art. Reuse of any field.
  • the channel state request information indicates the at least one table
  • the terminal device requests and the at least according to the channel state request Obtaining, by the correspondence of a table, the at least one table; if the plurality of sets of parameter value combinations correspond to a table, the channel state request information indicating a location of the at least one set of parameter value combinations in the table And the terminal device acquires the at least one set of parameter value combinations according to the location information.
  • the terminal device feeds back the channel state information of the first resource combination according to the subset 1; the bit value of the CSI request field in the downlink control information is 11.
  • the terminal device feeds back channel state information of the second resource combination according to the subset 2. In this manner, the channel state request in the downlink control information simultaneously indicates the resource combination.
  • the terminal device feeds back the channel state information according to the subset 1; and the bit value of the CSI request field in the downlink control information is 11, the terminal The device feeds back channel state information according to subset 2.
  • the channel state request in the downlink control information indicates only the at least one set of parameter value combinations.
  • subset 1 is a combination of at least one set of parameter values in a table (here, a primary table)
  • the downlink control information indicates that the CQI index in the channel configuration parameter is 0.
  • sub-table 1 16 sets of parameter value combinations (herein referred to as sub-table 1) with an interval of 5, wherein the downlink control information indicates that the CQI index of the channel configuration parameter starts at 0, and the interval is 1
  • Combination of parameter values herein referred to as subtable 2.
  • the at least one set of parameter values is indicated by scrambling code information.
  • the scrambling code information may be a Cyclic Redundancy Check (CRC) code.
  • the scrambling code information may be composed of a plurality of bits, and the first value combination of the plurality of bits is used to indicate the at least one set of parameter value combinations.
  • the scrambling code information includes 4 bits, 1110 is used to indicate a subset 1 representing the combination of the at least one set of parameter values, and 1101 is used to indicate a subset 2 representing a further combination of parameter values.
  • the implementation of the indication by using the N bits in the downlink control information as the channel state request information, and the implementation manners of the two are the same or similar.
  • the channel state request information and the scrambling code information of the N bits indicate the combination of the at least one set of parameter values.
  • the at least one set of parameter values can be simultaneously indicated by the above two sets of bits.
  • the at least one set of parameter values can be indicated by a combination of two sets of bits, such as N+4 bits.
  • a partial subset of the plurality of sets of parameter values is indicated by the N bits, and another subset of the plurality of sets of parameter values is indicated by the 4 bits (ie, scrambling code information).
  • the at least one set of parameter values is indicated by format information of the downlink control information.
  • the downlink control information carries a channel state information request, for example, by using channel state request information in the downlink control information, where the channel state request information can be referred to the foregoing, the channel state information.
  • the request is used to request or instruct the terminal device to report channel state information, where the channel state information is determined according to the subset of the downlink control information format indication.
  • a CSI request field is defined in DCI formats 0 and 4 of uplink (UL) scheduling in an LTE system, and the length of the request field may be 2, 3, 4, or 5 bits.
  • the CSI request field indicates the channel state information request
  • different formats are used to indicate different subsets, for example, format 0 is used to indicate subset 1, and format 4 is used to indicate subset 2; for example, format 0A is used to indicate subset 1, and format 0B is used to indicate subset 2.
  • the format information indicates the at least one table, and the terminal device according to the correspondence between the format information and the at least one table Obtaining the at least one table; if the plurality of sets of parameter value combinations correspond to a table, the format information indicates location information of the at least one set of parameter value combinations in the table, the terminal device according to the The location information obtains the at least one set of parameter value combinations.
  • the terminal device acquires first channel state information according to the combination of the at least one set of parameter values, where the first channel state information is used to indicate a set of parameter value combinations in the at least one set of parameter value combinations. .
  • the method further includes: the terminal device determining a first resource combination and a transmission characteristic, and detecting or determining a channel state or channel quality of the first resource combination according to the transmission characteristic,
  • first channel state information corresponding to a channel state of the first resource combination is obtained according to the at least one set of parameter value combinations. It should be noted that the manner of obtaining the combination of the at least one set of parameter values and the indication manner of the combination of the at least one set of parameter values by the access network device are described above, and are not described herein again.
  • the first resource combination is pre-configured, notified by higher layer signaling, or determined by the at least one set of parameter values, and the terminal device is further configured according to the downlink.
  • Control information determines the transmission characteristics.
  • the at least one set of parameter values has a corresponding relationship with the first resource combination, and the terminal device determines the corresponding first resource combination while acquiring the at least one set of parameter value combinations. Further, the terminal device further needs to determine the transmission characteristic according to the downlink control information.
  • the terminal device acquires the at least one set of parameter value combinations by using the channel state request information, and determines the transmission characteristic by using the downlink control information format, where different downlink control information formats are used to indicate different transmission characteristics. .
  • format 1 is used to indicate BLER1
  • format 2 is used to indicate BLER2.
  • the terminal device acquires the at least one set of parameter value combinations by using the format of the downlink control information, and determines the transmission characteristic by using the channel state request information. For example, when 2 bits of the CSI request field are 10, BLER1 is indicated; when 2 bits are 11, BLER2 is indicated.
  • the transmission characteristic is pre-configured, notified by higher layer signaling, or determined by the at least one set of parameter values, and the terminal device further determines according to the downlink control information.
  • the first resource combination Refer to the description in the first alternative design.
  • the first resource combination and the transmission characteristic are both pre-configured, notified by higher layer signaling, or determined by the at least one set of parameter value combinations.
  • the at least one set of parameter values has a corresponding relationship with the first resource combination and the transmission characteristic, and the terminal device can determine the first resource combination and the transmission characteristic according to the at least one set of parameter value combinations.
  • the terminal device determines the first resource combination and transmission characteristics while acquiring the at least one set of parameter value combinations.
  • the first resource combination and the transmission characteristic are all determined by the downlink control information.
  • the terminal device acquires the at least one set of parameter value combinations, and further determines a corresponding resource combination and a transmission characteristic according to the downlink control information to determine channel state information that needs to be reported. For example, the terminal device may determine the resource combination and/or transmission characteristics according to at least one of a format of downlink control information and channel state request information carried by downlink control information.
  • the terminal device may determine the resource combination and/or the transmission characteristic according to the downlink control information, and specifically includes at least one of the following implementation manners:
  • the at least one set of parameter values has a correspondence with the first resource combination and the first transmission characteristic, or the at least one set of parameter values corresponds to the first resource combination and the first transmission characteristic .
  • the terminal device may determine the first resource combination and the corresponding first transmission characteristic according to the combination of the at least one set of parameter values; wherein the corresponding relationship is predefined or configured, for details. As explained above, the terminal device can acquire the correspondence and determine the first resource combination and the corresponding first transmission characteristic.
  • the terminal device is instructed to feed back channel state information according to the subset 1.
  • the subset 1 corresponds to the first resource set.
  • the first transmission characteristic as described above, the correspondence relationship has been embodied in the division of the subset. That is, the terminal device determines, according to the indication of the downlink control information, the channel state information that satisfies the first transmission characteristic for the first resource set according to the subset 1 (the at least one set of parameter value combinations).
  • the at least one set of parameter value combinations has a correspondence relationship with one of the first resource combination and the first transmission characteristic, or the at least one set of parameter value combinations corresponds to the first resource combination and the first One of a transmission characteristic.
  • the terminal device may determine one of the first resource combination and the corresponding first transmission characteristic according to the at least one set of parameter value combinations.
  • the corresponding relationship is predefined or configured. For details, as described above, the terminal device may acquire the correspondence and determine one of the first resource combination and the corresponding first transmission characteristic. Further, the downlink control information indicates another one of the first resource combination and the first transmission characteristic by a manner different from indicating the combination of the at least one set of parameter values.
  • the channel state request information is used to indicate the at least one set of parameter value combinations, and one of a first resource combination and a first transmission characteristic corresponding to the at least one set of parameter value combinations;
  • the format of the downlink control information is used to indicate another one of the first resource combination and the first transmission characteristic.
  • the channel state request information is used to simultaneously indicate the at least one set of parameter value combinations and one of a first resource combination and a first transmission characteristic corresponding to the at least one set of parameter value combinations. ;specific.
  • different portions of the channel state request information are used to indicate the at least one set of parameter values, and at least one of the resource combination and the transmission characteristics.
  • the channel state request information includes multiple sets of bits. A value of a set of bits is used to indicate the at least one set of parameter values, and a value of the other set or sets of bits is used to indicate at least one of the resource combination and transmission characteristics.
  • the at least one set of parameter values is combined by the format of the downlink control information, and one of a first resource combination and a first transmission characteristic corresponding to the at least one set of parameter values combined;
  • the channel state request information in the downlink control information is used to indicate another one of the first resource combination and the first transmission characteristic.
  • the terminal device acquires first channel state information, where the first channel state information is used to indicate a set of parameter value combinations in the at least one set of parameter value combinations.
  • the first channel state information may be any information that can be used to indicate the combination of the set of parameter values, such as CQI information, and further, may be a CQI index. Transmitting, by the terminal device, the first channel state information to the access network device, where the first channel state information is used by the access network device to determine modulation and coding information and/or a transport block for downlink data transmission. size.
  • the access network device can indicate that the terminal device performs channel state information determination and reporting by using the downlink control information, thereby improving the processing efficiency of the system and improving the flexibility and accuracy of the channel state feedback.
  • each network element such as an access network device, a terminal device, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • the terminal device can perform any of the methods in the embodiments of the present application.
  • the terminal device can include at least a transceiver 301 and a processor 304 (here, the upper representation is a processor, which can represent the modem processor 304 itself, or the modem 304 and the application processor. 302 integration).
  • FIG. 3 such as a memory, and other components in the description of FIG. 3 may also be included.
  • the transceiver 301 can be composed of independent receivers and transmitters, and can perform corresponding receiving and transmitting functions separately, or can be a transceiver integrated with receiving and transmitting functions. There is no further limitation here.
  • the transceiver 301 of Figure 3 can be split into a receiver 301A and a transmitter 301B.
  • the wireless device since the terminal device is merely an exemplary description of an optional main body, the wireless device is mainly described as a main unit, the wireless device may be a unit, a chip or a component included in the terminal device, or the terminal device itself. .
  • the wireless device includes a processor 304 and a receiver 301A, wherein:
  • the receiver 301A is configured to receive downlink control information from an access network device, where the downlink control information includes channel state request information, where the channel state request information is used to request channel state information;
  • the processor 304 is configured to determine, according to the downlink control information, a combination of at least one set of parameter values in a plurality of sets of parameter value combinations, where the parameter values are combined with parameter values of channel configuration parameters;
  • the processor 304 is further configured to: acquire, according to the at least one set of parameter values, first channel state information, where the first channel state information is used to indicate a set of parameter values in the at least one set of parameter value combinations. .
  • the wireless device further includes a transmitter 301B, where the transmitter 301B is configured to send the first channel state information to the access network device.
  • the processor 304 is further configured to determine, according to the channel state request information included in the downlink control information, the at least one set of parameter value combinations, or determine the at least one group according to a format of the downlink control information. Combination of parameter values.
  • the processor 304 is further configured to determine location information of the at least one set of parameter values combined in the plurality of sets of parameter value combinations to determine the first parameter value combination.
  • the location information of the at least one set of parameter values combined in the plurality of sets of parameter value combinations comprises one or more of the following:
  • the at least one set of parameter values is combined with the distribution information of the plurality of sets of parameter values, and the distribution information is used to indicate that the at least one set of parameter values are combined into a medium interval or an unequal interval of the plurality of sets of parameter values. At least one set of parameter values; and
  • the number of groups of parameter value combinations included in the at least one set of parameter value combinations is the number of groups of parameter value combinations included in the at least one set of parameter value combinations.
  • the processor 304 further determines, according to the downlink control information, a first resource combination, where the first channel state information indicates a channel state of the first resource combination.
  • the processor 304 further determines the first resource combination according to channel state request information included in the downlink control information, or determines the first resource combination according to a format of the downlink control information.
  • the specific implementation manner of the communication method performed by the foregoing wireless device can be referred to the description of the embodiment of the present application and the communication method provided.
  • the communication method corresponding to the terminal device of the embodiment of the present application and FIG. 4 is based on the same concept, and the technical effects thereof are the same as the above communication method.
  • the specific functions of the processor and receiver included in the wireless device in the embodiments of the present application, as well as any features, terms and implementation details involved therein, correspond to the functions of the terminal device in the method embodiment corresponding to FIG. 4. For details, refer to the description in the method embodiment corresponding to FIG. 4 of the present invention, and details are not described herein again.
  • the wireless device may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • the corresponding components in the foregoing embodiments may be implemented by corresponding hardware, or may be executed by corresponding hardware, for example, the foregoing receiving.
  • the device 301A may be hardware having a function of performing the foregoing receiving function, such as a transceiver that integrates a transceiving function or a receiver that only implements a receiving function, or a general processor or other hardware device capable of executing a corresponding computer program to perform the foregoing functions.
  • the processor 304 may also be a software module or a functional unit that performs the corresponding function, such as a receiving unit; and the processor 304 as described above may be a hardware having a function of executing the processor, such as a specific function processor, or a general processor, It may be another hardware device capable of executing a corresponding computer program to perform the foregoing functions, and may also be a software module or a functional unit that performs a corresponding function, such as a processing unit; for example, the aforementioned transmitter 301B may have the foregoing Sending function hardware, such as integrated transceiver work
  • the transceiver, or the transmitter that only implements the transmitting function may also be a general processor or other hardware device capable of executing a corresponding computer program to perform the foregoing functions, or may be a software module or a functional unit that performs a corresponding function, such as a transmitting unit.
  • a storage unit may also be included. See Figure 6 for details.
  • the access network device can perform any of the methods in the embodiments of the present application.
  • the access network device may include at least a controller or processor 201 (hereinafter, the processor 201 is taken as an example) and a transceiver 202.
  • FIG. 2 such as a memory, and other components in the description of FIG. 2 may also be included.
  • the transceiver 202 may be composed of independent receivers and transmitters, and perform respective receiving and transmitting functions separately, or may be transceivers that integrate receiving and transmitting functions. There is no further limitation here. Structurally, the transceiver 202 of Figure 2 can be split into a receiver 202A and a transmitter 202B.
  • the wireless device since the access network device is only an exemplary description of an optional main body, the wireless device is mainly used for description.
  • the wireless device may be a unit, chip or component included in the access network device. Or access the network device itself.
  • the wireless device includes a processor 201 and a transmitter 202B, wherein:
  • the transmitter 202B is configured to send downlink control information to the terminal device, where the downlink control information includes channel state request information, where the channel state request information is used to request channel state information;
  • the processor 201 is configured to determine second channel state information
  • the transmitter 202B sends downlink data to the terminal device according to the second channel state information
  • the downlink control information is further used to indicate at least one set of parameter values in a plurality of sets of parameter values, the parameter values being combined into a parameter value combination of channel configuration parameters, and the at least one set of parameter values is used to determine The channel state information.
  • the wireless device includes a receiver 202A, and the receiver 202A is configured to receive first channel state information from the terminal device.
  • the processor 201 determines that the first channel state information received by the receiver 202A is the second channel state information.
  • the processor 201 determines the at least one set of parameter value combinations from the plurality of sets of parameter value combinations.
  • the specific implementation manner of the communication method performed by the foregoing wireless device can be referred to the description of the communication method provided by the embodiment of the present application.
  • the communication method corresponding to FIG. 4 in the access network device in the embodiment of the present application is based on the same concept, and the technical effect brought by the same is the same as the above-mentioned control resource acquisition method.
  • the specific functions of the processor and receiver included in the wireless device in the embodiments of the present application, as well as any features, terms and implementation details involved therein, correspond to the functions of the access network device in the method embodiment corresponding to FIG. For details, refer to the description in the method embodiment corresponding to FIG. 4 of the present invention, and details are not described herein again.
  • the wireless device may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • the corresponding components in the foregoing embodiments may be implemented by corresponding hardware, or may be executed by corresponding hardware, for example, the foregoing transmission.
  • the device 202B may be hardware having a function of performing the foregoing transmission function, such as a transceiver that integrates a transceiving function or a transmitter that only implements a receiving function, or a general processor or other hardware device capable of executing a corresponding computer program to perform the foregoing functions.
  • the processor 201 may also be a software module or a functional unit that performs the corresponding function, such as a transmitting unit; and the processor 201 as described above may be a hardware having a function of executing the processor, such as a specific function processor, or a general processor, It may be another hardware device capable of executing a corresponding computer program to perform the aforementioned functions, and may also be a software module or a functional unit that performs a corresponding function, such as a processing unit; for example, the aforementioned receiver 202A may have the foregoing Receive function hardware, such as integrated transceiver function
  • the transceiver, or the receiver that only implements the receiving function may also be a general processor or other hardware device capable of executing the corresponding computer program to perform the aforementioned functions, or may be a software module or a functional unit that performs the corresponding function, such as a receiving unit.
  • a storage unit may also be included. See Figure 6 for details.
  • a wireless device can include any number of transmitters, receivers, processors, controllers, memories, communication units, and the like.
  • the embodiment of the present application further provides a communication system, including at least one access network device and at least one terminal device mentioned in the foregoing embodiments of the present invention.
  • the embodiment of the present application further provides a device (for example, an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above communication method.
  • a device for example, an integrated circuit, a wireless device, a circuit module, etc.
  • the means for implementing the power tracker and/or power generator described herein may be a stand-alone device or may be part of a larger device.
  • the device may be (i) a self-contained IC; (ii) a set having one or more 1Cs, which may include a memory IC for storing data and/or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter (iv) an ASIC, such as a mobile station modem; (v) a module that can be embedded in other devices; (vi) a receiver, a cellular phone, a wireless device, a handset, or a mobile unit; (vii) other, etc. Wait.
  • a self-contained IC may include a memory IC for storing data and/or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter (iv) an ASIC, such as a mobile station modem; (v) a module that can be embedded in other devices; (vi) a receiver, a cellular phone, a wireless device, a handset, or a mobile unit; (vii) other, etc. Wait.
  • the method and apparatus provided by the embodiments of the present application may be applied to a terminal device or an access network device (which may be collectively referred to as a wireless device).
  • the terminal device or access network device or wireless device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system.
  • the application layer includes applications such as browsers, contacts, word processing software, and instant messaging software.
  • the embodiment of the present application does not limit the specific structure of the execution subject of the method, as long as the transmission signal according to the embodiment of the present application can be executed by running a program that records the code of the method of the embodiment of the present application.
  • the method can be communicated.
  • the execution body of the method for wireless communication in the embodiment of the present application may be a terminal device or an access network device, or a function capable of calling a program and executing a program in the terminal device or the access network device. Module.
  • a computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (DVD). Etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.).
  • a magnetic storage device eg, a hard disk, a floppy disk, or a magnetic tape, etc.
  • CD compact disc
  • DVD digital versatile disc
  • Etc. smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • wire eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

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Abstract

本申请涉及无线通信领域，尤其涉及一种通信方法、装置及系统。终端设备接收包含信道状态请求信息的下行控制信息，所述信道状态请求信息用于请求信道状态信息；所述终端设备确定多组参数值组合中的至少一组参数值组合，并根据所述至少一组参数值组合获取第一信道状态信息，以用于指示所述至少一组参数值组合中的一组参数值组合。通过该方法，提高了信道状态信息请求以及上报的灵活性和效率。

Description

一种通信方法、装置以及系统 技术领域
本申请涉及通信领域，尤其涉及一种信道状态请求信息的收发。
背景技术
移动通信系统中，无线衰落信道时变的特点导致通信过程存在不确定性。随着技术水平的发展和进步，链路自适应技术出现并开始广泛应用。所述链路自适应技术可以实现根据信道状态自适应地调节发射功率、调制编码方式以及数据的帧长等来克服信道的时变特性带来的不确定性，改善通信效果。
长期演进(Long Term Evolution，LTE)系统中，接入网设备可以根据无线信道质量为物理下行共享信道(Physical Downlink Shared Channel，PDSCH)选择不同的调制编码方式。一般来说，信道质量越好，调制阶数和编码速率越高。对于下行链路，接入网设备会以恒定功率发射下行参考信号。用户设备(User Equipment，UE)根据所述下行参考信号做下行链路信道质量估计，得到信道状态信息(Channel State Information，CSI)，并通过所述信道状态信息得到对应的信道质量指示(Channel Quality Indicator，CQI)值，并向接入网设备上报CQI值。
例如，信道质量可以被量化成为CQI索引为0-15共16个等级，数值越大，等级越高，则信道质量越好；UE基于最优的秩指示和/或预编码矩阵指示计算出信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)；然后根据该SINR将估计的结果映射为16个等级中相应的CQI索引，并将CQI索引反馈给接入网设备。接入网设备根据UE上报的CQI索引和网络情况为UE分配调制编码方案(Modulation and Coding Scheme，MCS)，所述MCS用于指示当前PDSCH采用的调制方式以及编码方式。
在LTE持续演进系统或者新无线(New Radio，NR)系统中，技术发展带来更多的传输需求，例如超可靠低时延(Ultra-Reliable and Low-Latency Communication，URLLC)。在这种前提下，接入网设备需要UE针对相应的需求更精准地上报信道质量，那么如何实现更灵活、高效的信道状态信息请求以及信道状态上报以满足多种传输需求是亟需解决的技术问题。
发明内容
本发明涉及一种通信方法、装置以及系统，以实现更灵活、高效的信道状态请求和信道状态上报。
第一方面，本申请实施例提供一种通信方法，所述方法包括：
终端设备从接入网设备接收下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
所述终端设备根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组 合，所述参数值组合为信道配置参数的参数值组合；
所述终端设备根据所述至少一组参数值组合，获取第一信道状态信息，所述第一信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合。
通过该方法，可以实现终端设备根据下行控制信息的指示，获取需要上报的信道状态信息，提高了信道状态信息请求以及上报的灵活性和效率。
一可选的设计中，所述终端设备根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合，包括：所述终端设备根据所述下行控制信息包含的信道状态请求信息确定所述至少一组参数值组合。
可选的，所述信道状态请求信息通过N个比特位指示，所述N为正整数，或者所述信道状态请求信息通过所述下行控制信息的扰码信息指示，或者，所述信道状态请求信息通过所述信道状态请求信息和扰码信息指示。该可选的方式中，通过N个比特位指示可以复用下行控制信息中的任一字段或者采用联合编码的方式通过一个字段指示更多的信息，提高下行传输效率。
一可选的设计中，所述终端设备根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合，包括所述终端设备根据所述下行控制信息的格式确定所述至少一组参数值组合。进一步可选的，所述下行控制信息中的所述信道状态请求信息用于请求信道状态信息，所述终端设备响应于所述信道状态请求，根据所述下行控制信息的格式确定上报信道状态所需要的所述至少一组参数值组合。
一种可选的设计中，所述确定所述至少一组参数值组合，包括：确定所述至少一组参数值组合在所述多组参数值组合中的位置信息，以确定所述至少一组参数值组合。
可选的，所述至少一组参数值组合在所述多组参数值组合中的位置信息包含以下中的一个或多个：从所述多组参数值组合中获取所述至少一组参数值组合的起始位置；
所述至少一组参数值组合在所述多组参数值中的分布信息，所述分布信息用于指示所述至少一组参数值组合为所述多组参数值中等间隔或不等间隔分布的至少一组参数值组合；以及所述至少一组参数值组合中包含的参数值组合的组数。
可选的，所述多组参数值组合由一个或多个表格中的多组参数值组合构成，所述一个或多个表格为预先定义或者配置的。
一种可选的设计中，所述终端设备还根据所述下行控制信息确定第一资源组合，所述第一信道状态信息指示所述第一资源组合的信道状态。可选的，所述第一资源组合可以为一载波组合、一载波带宽区域(BWP)组合或者一CSI进程组合。
一种可选的设计中，所述终端设备还根据所述下行控制信息确定第一资源组合，包括：所述终端设备根据所述下行控制信息包含的信道状态请求信息确定所述第一资源组合。可选的，所述信道状态请求信息为用于确定所述至少一组参数值组合的所述信道状态请求信息。即，所述终端设备根据所述下行控制信息包含的信道状态请求信息确定所述至少一组参数值组合以及对应的第一资源组合。
一种可选的设计中，所述终端设备还根据所述下行控制信息确定第一资源组合，包括：所述终端设备根据所述下行控制信息的格式确定所述第一资源组合。
第二方面，本申请实施例提供一种通信方法，所述方法包括：
接入网设备向终端设备发送下行控制信息，所述下行控制信息包含信道状态请求信 息，所述信道状态请求信息用于请求信道状态信息；
所述接入网设备确定第二信道状态信息；
所述接入网设备根据所述第二信道状态信息，向所述终端设备发送下行数据；
其中，所述下行控制信息还用于指示多组参数值组合中的至少一组参数值组合，所述参数值组合为信道状态参数的参数值组合，所述至少一组参数值组合用于确定所述信道状态信息。
通过该方法，可以实现接入网设备通过下行控制信息指示终端设备上报信道状态信息，提高了信道状态信息请求以及上报的灵活性和效率。
一种可选的设计中，所述第二信道状态信息是接入网设备根据第一信道状态信息确定的，所述第一信道状态信息为所述接入网设备从终端设备接收得到的。可选的，所述第二信道状态信息可以为CQI信息，或者，调制方式信息，例如CQI索引或者MCS索引。
一种可选的设计中，所述第二信道状态信息为第一信道状态信息，所述第一信道状态信息为所述接入网设备从终端设备接收得到的。
一种可选的设计中，所述第二信道状态信息是接入网设备确定的。
一种可选的设计中，所述接入网设备向终端设备发送下行控制信息之前，还包括：所述接入网设备从所述多组参数值组合中确定所述至少一组参数值组合。可选的，所述多组参数值组合包含除所述至少一组参数值组合之外的一组参数值组合。进一步可选的，所述接入网设备根据所述至少一组参数值组合确定所述下行控制信息。
一种可选的设计中，所述下行控制信息中的所述信道状态请求信息用于指示所述至少一组参数值组合。
一种可选的设计中，所述下行控制信息的格式用于指示所述至少一组参数值组合。
进一步可选的，所述下行控制信息包含的信道状态请求信息或者所述下行控制信息的格式通过指示所述至少一组参数值组合在所述多组参数值组合中的位置信息来指示所述第一参数值组合。
一种可选的设计中，所述下行控制信息还用于指示第一资源组合。其中，所述第一信道状态信息用于指示所述第一资源组合的信道状态，或者，所述信道状态请求信息用于请求所述第一资源组合的信道状态。
一种可选的设计中，所述下行控制信息包含的信道状态请求信息或者所述下行控制信息的格式用于指示所述第一资源集合。
第三方面，本申请实施例提供一种无线装置，所述无线装置包括处理器和接收器，所述接收器用于从接入网设备接收下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
所述处理器用于根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合，所述参数值组合为信道配置参数的参数值组合；
所述处理器还用于根据所述至少一组参数值组合，获取第一信道状态信息，所述第一信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合。
一种可选的设计中，所述无线装置还包括发射器，所述发射器用于将所述第一信道状态信息发送给所述接入网设备。
一种可选的设计中，所述处理器用于根据所述下行控制信息包含的信道状态请求信息 确定所述至少一组参数值组合，或者，根据所述下行控制信息的格式确定所述至少一组参数值组合
一种可选的设计中，所述处理器用于确定所述至少一组参数值组合在所述多组参数值组合中的位置信息，以确定所述至少一组参数值组合。
一种可选的设计中，所述处理器还根据所述下行控制信息确定第一资源组合，所述第一信道状态信息指示所述第一资源组合的信道状态。
一种可选的设计中，所述处理器根据所述下行控制信息包含的信道状态请求信息确定所述第一资源组合，或者，根据所述下行控制信息的格式确定所述第一资源组合。
该第三方面中，本申请实施例还提供一种无线装置，所述无线装置包括发射器和处理器，其中：
所述发射器用于向终端设备发送下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
所述处理器确定第二信道状态信息；
所述处理器根据所述第二信道状态信息，向所述终端设备发送下行数据；
其中，所述下行控制信息还用于指示多组参数值组合中的至少一组参数值组合，所述参数值组合为信道配置参数的参数值组合，所述至少一组参数值组合用于确定所述信道状态信息。
一种可选的设计中，所述处理器用于从所述多组参数值组合中确定所述至少一组参数值组合。
在以上各个方面中，还包括：
一种可选的设计中，所述信道配置参数可以包含调制方式(modulation)、码率(code rate)以及谱效率(efficiency)等反映信道配置状态的参数中的至少一个。进一步可选的，所述信道配置参数还可以包含信道质量指示CQI信息，例如CQI索引。
可选的，所述信道配置参数为调制方式、码率以及谱效率的组合。一组参数值组合则为一组调制方式、码率以及谱效率的值的组合。
可选的，所述信道配置参数为调制方式、码率、谱效率以及信道质量指示信息的组合。一组参数值组合则为一组调制方式、码率、谱效率以及信道质量信息信息的值的组合。
一种可选的设计中，所述至少一组参数值组合为所述多组参数值组合的第一子集；所述多组参数值组合中还包含不同于所述第一子集的第二子集，所述第二子集与所述第一子集对应于不同的信道状态请求信息或者不同的下行控制信息格式。
进一步可选的，所述第一子集和第二子集对应于相同的传输特性；或者，所述第一子集和第二子集对应于不同的传输特性；又或者，所述第一子集对应于不同的传输特性。其中，所述传输特性可以为一个或一组传输特性。
例如，所述第一子集和第二子集均对应于第一误块率BLER；或者所述第一子集对应于第一误块率BLER，所述第二子集对应于第二误块率BLER，所述第一BLER和第二BLER的值不同；或者所述第一子集对应于第一误块率BLER以及第二误块率BLER，所述第一BLER和第二BLER的值不同。
一种可选的设计中，所述至少一组参数值组合对应于所述第一资源组合，所述至少一组参数值组合与所述第一资源组合之间的对应关系是预先定义或者配置的。进一步可选 的，所述至少一组参数值组合对应于第一传输特性，所述至少一组参数值组合与所述第一资源组合和所述第一传输特性之间的对应关系是预先定义或者配置的，所述第一传输特性为第一BLER。
第四方面，本发明提供了一种系统，至少包括上述第三方面提供的两种装置。
第五方面，本发明提供了一种无线装置，其包含一个或多个处理器，以及存储器，所述存储器上存储有计算机程序，所述处理器执行所述计算机程序时，使得所述装置实现上述第一方面和/或第二方面所述的任一种方法。
第六方面，本发明提供了一种存储有计算机程序的计算机存储介质，其上存储有计算机程序，当所述计算机程序被处理器(或者设备(终端设备或接入网设备))执行时实现上述第一方面和/或第二方面所述的任一种方法。
第七方面，本发明提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第一方面和/或第二方面所提供的任何一种方法。
第八方面，本发明提供了一种芯片系统，该芯片系统包括处理器，用于支持无线设备或装置实现上述第一方面和/或第二方面中所涉及的功能，例如，例如生成或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存无线设备或装置必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
第九方面，本发明提供了一种芯片，所述芯片包括处理模块与通信接口，所述处理模块用于控制所述通信接口与外部进行通信，所述处理模块还用于实现第一方面和/或第二方面提供的任何一种方法。
相较于现有技术，本申请实施例提供的方案，接入网设备可以通过下行控制信息指示终端设备进行信道状态信息的确定和上报，提高了系统的处理效率，同时提高了信道状态反馈的灵活性和准确性。
附图说明
下面将参照所示附图对本申请实施例进行更详细的描述：
图1示出了本申请实施例的一种可能的应用场景示意图；
图2示出了本申请实施例提供的接入网设备的一种可能的结构示意图；
图3示出了本申请实施例提供的终端设备的一种可能的结构示意图；
图4示出了本申请实施例提供的一种可能的通信方法的流程示意图；
图5示出了本申请实施例提供的一种下行控制信息可能的指示方式；
图6示出了本申请实施例提供的无线装置的一种可能的结构示意图。
具体实施方式
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术 问题，同样适用。
本申请实施例中，“一个”意味着单个个体，并不代表只能是一个个体，不能应用于其他个体中。本申请中“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
图1示出了本申请实施例中一种可能的应用场景示意图。该应用场景中的通信系统包括：接入网设备，以及一个或者多个终端设备。其中，接入网设备和终端设备可以通过一种或多种空口技术进行通信。
以下，对本申请实施例可能出现的术语进行解释。
通信系统：可以适用于LTE系统，或其他采用各种无线接入技术的无线通信系统，例如采用码分多址，频分多址，时分多址，正交频分多址，单载波频分多址等接入技术的系统。此外，还可以适用于使用LTE系统后续的演进系统，如第五代5G系统或者NR系统等。
接入网设备：可以是基站，或者接入点，或者网络侧设备，或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。接入网设备可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。接入网设备还可协调对空中接口的属性管理。例如，接入网设备可以是全球移动通讯(Global System of Mobile communication，GSM)或码分多址(Code Division Multiple Access，CDMA)中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)中的基站(NodeB，NB)，还可以是长期演进(Long Term Evolution，LTE)中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者未来5G网络中的基站，例如gNB等，在此并不限定。需要说明的是，对于5G或NR系统，在一个NR基站下，可能存在一个或多个发送接收点(Transmission Reception Point，TRP)，所有的TRP属于同一个小区，其中，每个TRP和终端都可以使用本申请实施例所述的测量上报方法。在另一种场景下，接入网设备还可以分为控制单元(Control Unit，CU)和数据单元(Data Unit，DU)，在一个CU下，可以存在多个DU，其中，每个DU和终端都可以使用本申请实施例所述的测量上报方法。CU-DU分离场景和多TRP场景的区别在于，TRP只是一个射频单元或一个天线设备，而DU中可以实现协议栈功能，例如DU中可以实现物理层功能。
终端设备：可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiation Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital  Assistant，PDA)等设备。无线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)、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 or User Equipment)，在此不作限定。
载波：频域上的物理资源，对于终端设备来说，一般称为成员载波(Component Carrier，CC)，一个成员载波即为一个服务小区(serving cell)的频域资源。
带宽区域：Bandwidth Part(BWP)，频域连续的多个物理资源块，一般由接入网设备为终端设备配置。终端设备在BWP内接收或发送数据。以控制资源传输为例，在一个BWP内包括至少一个控制资源集合，且控制资源集合包括的频域资源不超过BWP在频域上包括的多个物理资源块。
高层信令：区分于物理层信令，可以为主信息块(Master Information Block,MIB)，系统信息块(System Information Block，SIB)，或无线资源控制(Radio Resource Control,RRC)信令，或其他具有类似特征的高层信令。
信道状态信息：通信链路的信道属性。例如，它可以描述信号在每条传输路径上的衰弱因子，即信道增益矩阵中每个元素的值，如信号散射(Scattering),环境衰弱(fading，multipath fading or shadowing fading),距离衰减(power decay of distance)等信息。作为示例而非限定，在本申请实施例中信道状态信息可以包括但不限于以下一种或多种信息：
1.信道质量指示(CQI)信息
CQI可以用来反映信道质量，例如物理下行共享信道(Physical Downlink Shared Channel，PDSCH)。作为示例而非限定，在本申请实施例中，可以用0-N来表示信道质量。0表示信道质量最差，N表示信道质量最好，N为正整数，例如15。
2.秩指示(Rank Indication，RI)信息
RI信息可以用于指示信道的有效的数据层数，或者说，RI信息可以用于指示终端设备当前可以支持的码字(Code Word，CW)数。
3.预编码矩阵指示(Precoding Matrix Indicator，PMI)信息
PMI信息可以用于指示码本集合的索引(index)。即，在使用多天线技术，例如，多输入多输出(Multiple-Input Multiple-Output，MIMO)技术中，在信道物理层的基带处理中，会进行基于预编码矩阵的预编码处理(precoding)。例如，终端设备可以通过PMI信息指示预编码矩阵量。
在本申请实施例中，终端设备可以在物理上行控制信道(Physical Uplink Control Channel，PUCCH)或物理上行共享信道(Physical Uplink Shared Channel，PUSCH)上向接入网设备发送信道状态信息。接入网设备可以根据信道状态信息，确定当前PDSCH或PUSCH的无线信道条件，进而完成针对PDSCH的调度，例如，接入网设备可以基于信道状态信息确定自适应编码调制(Adaptive Modulation and Coding，AMC)、调制与编码策略(Modulation and Coding Scheme，MCS)、上行传输或下行传输的码率或数据量等。
进一步地，上述接入网设备的一种可能的结构示意图可以如图2所示。该接入网设备102能够执行本申请实施例提供的方法。其中，该接入网设备102可以包括：控制器或处 理器201(下文以处理器201为例进行说明)以及收发器202。控制器/处理器201有时也称为调制解调器处理器(modem processor)。调制解调器处理器201可包括基带处理器(baseband processor，BBP)(未示出)，该基带处理器处理经数字化的收到信号以提取该信号中传达的信息或数据比特。如此，BBP通常按需或按期望实现在调制解调器处理器201内的一个或多个数字信号处理器(digital signal processor，DSP)中或实现为分开的集成电路(integrated circuit，IC)。
收发器202可以用于支持接入网设备与终端设备之间收发信息，以及支持终端设备之间进行无线电通信。所述处理器201还可以用于执行各种终端设备与其他接入网设备通信的功能。在上行链路，来自终端设备的上行链路信号经由天线接收，由收发器202进行调解，并进一步处理器201进行处理来恢复终端设备所发送的业务数据和/或信令信息。在下行链路上，业务数据和/或信令消息由终端设备进行处理，并由收发器202进行调制来产生下行链路信号，并经由天线发射给终端设备。所述接入网设备还可以包括存储器203，可以用于存储该接入网设备的程序代码和/或数据。收发器202可以包括独立的接收器和发送器电路，也可以是同一个电路实现收发功能。所述接入网设备还可以包括通信单元204，用于支持所述接入网设备与其他网络实体进行通信。例如,用于支持所述接入网设备与核心网的接入网设备等进行通信。
可选的，接入网设备还可以包括总线。其中，收发器202、存储器203以及通信单元204可以通过总线与处理器201连接。例如，总线可以是外设部件互连标准(Peripheral Component Interconnect，PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture，EISA)总线等。所述总线可以包括地址总线、数据总线、以及控制总线等。
图3为上述通信系统中，终端设备的一种可能的结构示意图。该终端设备能够执行本申请实施例提供的方法。该终端设备可以是图1中的一个或多个终端设备中的任一个。所述终端设备包括收发器301，应用处理器(application processor)302，存储器303和调制解调器处理器(modem processor)304。
收发器301可以调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收接入网设备发射的下行链路信号。收发器301可以调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。
调制解调器处理器304有时也称为控制器或处理器，可包括基带处理器(baseband processor,BBP)(未示出)，该基带处理器处理经数字化的收到信号以提取该信号中传达的信息或数据比特。BBP通常按需或按期望实现在调制解调器处理器304内的一个或多个数字中或实现为分开的集成电路(IC)。
在一个设计中，调制解调器处理器(modem processor)304可包括编码器3041，调制器3042，解码器3043，解调器3044。编码器3041用于对待发送信号进行编码。例如，编码器3041可用于接收要在上行链路上发送的业务数据和/或信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码、或交织等)。调制器3042用于对编码器3041的输出信号进行调制。例如，调制器可对编码器的输出信号(数据和/或信令)进行符号映射和/或调制等处理，并提供输出采样。解调器3044用于对输入信号进行解调处理。例如，解调器3044处理输入采样并提供符号估计。解码器3043用于对解调后的输入信号进 行解码。例如，解码器3043对解调后的输入信号解交织、和/或解码等处理，并输出解码后的信号(数据和/或信令)。编码器3041、调制器3042、解调器3044和解码器3043可以由合成的调制解调处理器304来实现。这些单元根据无线接入网采用的无线接入技术来进行处理。
调制解调器处理器304从应用处理器302接收可表示语音、数据或控制信息的数字化数据，并对这些数字化数据处理后以供传输。所属调制解调器处理器可以支持多种通信系统的多种无线通信协议中的一种或多种，例如LTE,新空口，通用移动通信系统(Universal Mobile Telecommunications System，UMTS)，高速分组接入(High Speed Packet Access，HSPA)等等。可选的，调制解调器处理器304中也可以包括一个或多个存储器。
可选的，该调制解调器处理器304和应用处理器302可以是集成在一个处理器芯片中。
存储器303用于存储用于支持所述终端设备通信的程序代码(有时也称为程序，指令，软件等)和/或数据、
需要说明的是，该存储器203或存储器303可以包括一个或多个存储单元，例如，可以是用于存储程序代码的处理器201或调制解调器处理器304或应用处理器302内部的存储单元，或者可以是与处理器201或调制解调器处理器304或应用处理器302独立的外部存储单元，或者还可以是包括处理器201或调制解调器处理器304或应用处理器302内部的存储单元以及与处理器201或调制解调器处理器304或应用处理器302独立的外部存储单元的部件。
处理器201和调制解调器处理器304(下文简称处理器304)可以是相同类型的处理器，也可以是不同类型的处理器。例如可以实现在中央处理器(Central Processing Unit，CPU)，通用处理器，数字信号处理器(Digital Signal Processor，DSP)，专用集成电路(Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件、其他集成电路、或者其任意组合。处理器201和调制解调器处理器304可以实现或执行结合本申请实施例公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能器件的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合或者片上系统(system-on-a-chip，SOC)等等。
本领域技术人员能够理解，结合本申请所公开的诸方面描述的各种解说性逻辑块、模块、电路和算法可被实现为电子硬件、存储在存储器中或另一计算机可读介质中并由处理器或其它处理设备执行的指令、或这两者的组合。作为示例，本文中描述的设备可用在任何电路、硬件组件、IC、或IC芯片中。本申请所公开的存储器可以是任何类型和大小的存储器，且可被配置成存储所需的任何类型的信息。为清楚地解说这种可互换性，以上已经以其功能性的形式一般地描述了各种解说性组件、框、模块、电路和步骤。此类功能性如何被实现取决于具体应用、设计选择和/或加诸于整体系统上的设计约束。本领域技术人员可针对每种特定应用以不同方式来实现所描述的功能性，但此类实现决策不应被解读为致使脱离本发明的范围。
在本申请实施例中，发送下行(上行)信道可以是指发送下行(上行)信道上承载的数据或信息，其中，该数据或信息可以是指经过信道编码后的数据或信息。
LTE系统中存在两种CSI上报方式：周期性和非周期CSI上报。周期性CSI上报时 刻通过高层信令配置，UE通过物理上行控制信道(Physical Uplink Control Channel，PUCCH)上报；非周期CSI上报是基站主动请求上报CSI，例如，通过在下行控制信息承载的信道状态请求信息，例如请求域(1-5个比特)实现，UE通过PUSCH上报CSI给基站。可选的，对于非周期CSI报告，下行控制信息中包含2比特的请求域，用来指示根据高层信令上报相应资源的CSI。所述高层信令用于指示终端设备根据相应的CQI表格上报CQI。预定义的CQI表格可以包含以下表1和/或表2，其中表1最高支持的调制方式为64QAM，表2最高支持的调制方式为256QAM。这里需要说明的是，本申请实施例中后续可能涉及到的参数值组合以表格形式体现时，如以下表格中每一行所包含的一组值称为一组参数值组合。
Figure PCTCN2017120201-appb-000001
表1
Figure PCTCN2017120201-appb-000002
表2
LTE演进系统或者NR系统中提出了新的技术，而新的技术面临更多样的需求。例如URLLC存在多种不同的可靠性需求：目标误块率(Block Error Rate，BLER)为10-4和10-5；又如，无论LTE还是NR系统，都面临更多不同的用例或者更多的天线配置等，这使得UE获得了更大的SINR范围来做CSI测量。较高的SINR值能够支持较高的调制方式，不同的SINR区间支持的调制方式范围可能存在区别，例如SINR的不同范围[-8 0]和 [-8,18]可以支持不同的调制方式范围，最高支持64QAM或者最高支持256QAM；不同的用例也可能在不同的SINR区间。这些新的技术或新的需求带来了CQI表格的多样性，并提高了信道状态信息请求和上报的复杂性，也对接入网设备和UE之间针对特定的信道状态请求和上报提出了更高的要求。因此，高层信令配置方式无法满足在新系统带来更新、更多需求的前提下，接入网设备和终端设备依然能灵活、精准的进行信道状态请求和上报的需求。
本申请实施例提供一种通信方法，在该方法中，终端设备从接入网设备接收下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；所述终端设备根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合，所述参数值组合为信道配置参数的参数值组合；所述终端设备根据所述至少一组参数值组合，获取第一信道状态信息，所述第一信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合；所述接入网设备根据所述第一信道状态信息进行下行数据的发送。根据本申请实施例所提供的方法，接入网设备可以通过下行控制信息指示终端设备进行信道状态信息的确定和上报，提高了系统的处理效率，同时提高了信道状态反馈的灵活性和准确性。
需要说明的是，本申请实施例涉及的“第一”、“第二”等表述方式不代表在顺序上的限定，仅为了方便表述或标识不同的信息而使用。另外，本申请实施例涉及的“预先定义或者配置”，可以为标准或协议中规定的，也可以是接入网设备预先确定的，并根据需要通知给终端设备。
图4示出了本申请实施例提供的通信方法的一种实现方式，如下根据图4对本申请实施例提供的方案进行说明。
步骤401：接入网设备向终端设备发送下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息。
该步骤可由接入网设备的收发器202执行。
其中，所述下行控制信息可以为下行控制信道中承载的控制信息。
可选的，接入网设备向终端设备发送下行控制信道，例如PDCCH、增强的物理下行控制信道(enhanced PDCCH)或者其它类型的控制信道，该下行控制信道承载控制信息。例如，所述控制信息可以为数据信道(例如PDSCH、PUSCH或其他数据信道)的调度信息，包括承载传输块的数据信道的资源分配信息、调制编码方式以及混合自动重传请求(Hybrid Automatic Repeat Request，HARQ)等控制信息中的一个或多个。
步骤402：所述终端设备接收所述下行控制信息。
该步骤可由终端设备的收发器301执行，或者由处理器304控制收发器301执行。
步骤403：所述终端设备根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合。
该步骤403中，所述确定多组参数值组合中的至少一组参数值组合，可以为确定第一参数的一组参数值对应于第二参数的一组参数值。
该步骤可由终端设备的处理器304执行。
其中，所述参数值组合为信道配置参数的参数值组合。所述第一参数和第二参数均为所述信道配置参数中的参数，所述第一参数不同于所述第二参数；进一步，所述第二参数 可以为信道配置参数中除第一参数以外的任一个或多个参数。
可选的，所述信道配置参数可以为调制方式(modulation)、编码速率(code rate)(简称码率)以及频谱效率(efficiency)(简称谱效率)等反映信道配置状态的参数中的至少一个。进一步可选的，所述信道配置参数还可以包含信道质量指示CQI信息，例如CQI索引，所述CQI信息用于指示信道状态。所述信道配置参数所包含的参数类型和数量可以是预先定义或配置的。例如，现有LTE协议中配置的信道配置参数为CQI信息、调制方式、码率以及谱效率。对于上述信道配置参数的定义，包括但不限于：所述调制方式可以为将要发送的信号加载到高频信号的调制方法，例如：正交振幅调制QAM等；信道编码中，K符号大小的信源数据块通过编码映射为N符号大小的码字，则K/N可以称为码率，也称编码效率，编码速率越大，效率越高。频谱效率，又称谱效率，可以指在数字通信系统中的带宽限制下可以传送的信息总量，它是在有限的频谱下，物理层通信协议可以达到的使用效率的量度。
可选的，所述第一参数可以为CQI信息，第二参数可以为调制方式、码率以及谱效率中的一个或多个。
进一步可选的，所述多组参数值组合可以是预先定义或配置的，具体可以为标准或协议确定的。具体的，所述多组参数值组合可以是一个集合所包含的全部参数值组合，也可以是多个集合所包含的全部参数值组合。所述每个集合可以以一个表格或者其它的形式被预先定义或配置。即，标准或协议中配置了用于信道状态上报的一个或多个表格，在所述一组预先定义或配置的信道配置参数被称为表头信息的前提下，对应于所述信道配置参数的一组值称为一组参数值组合，每个表格可以由对应于所述信道配置参数的一组或多组值组成，在表格中包含多组值的情况下，所述多组值在表格中按照信道配置参数中的某一个参数的参数值大小顺序排列。例如，信道配置参数由四种参数组成，则所述四种参数的存在对应关系的四个参数值称为一组参数值组合。又如，表格中的多组信道配置参数的参数值，以第一参数的参数值大小从小到大，或者，从大到小顺序排列，以表1为例，表1中的多组参数值以CQI索引的值从小到大(0-15)的顺序依次排列。本申请实施例对所述多组参数值组合的存在方式不做具体限定。
步骤404:所述终端设备根据所述至少一组参数值组合，获取第一信道状态信息，所述第一信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合；并向所述接入网设备发送所述第一信道状态信息。
可选的，所述第一信道状态信息可以为CQI信息；进一步可选的，所述CQI信息可以为CQI索引。
该步骤可由终端设备的处理器304执行。
需要说明的是，所述终端设备根据所述至少一组参数值组合获取所述第一信道状态信息，可以按照一定的规则直接获取，或者随机获取，又或者根据特定的信息获取。
一可选的设计中，所述终端设备可以根据预设的规则，从所述至少一组参数值组合中确定一组参数值组合，并获取所述第一信道状态信息，所述预设的规则可以是预先定义或配置的、接入网设备预先通知的、随机获取的或者是根据自身的能力信息获取的，所述能力信息可以为终端设备所能支持的最高调制方式、最高码率等。
又一可选的设计中，在步骤404之前，所述终端设备还确定信道质量，并在步骤404 中参考所述确定的信道质量，根据所述至少一组参数值组合，获取所述第一信道状态信息。
进一步可选的，所述信道质量可以是能够反映信道状态信息的一个参数值或多个参数值的组合。例如所述信道质量是所述终端设备根据接入网设备发送的下行参考信号做信道估计得到的。具体的，终端设备根据所述下行参考信号确定带宽内每个子载波的信干噪比(Single to Interference and Noise Ratio，SINR)值，然后通过映射算法，例如基于互信息的指数SINR映射(Mutual Information based exponential SNR Mapping，MIESM)算法，估计带宽信道质量的平均SINR值。
可选的，所述终端设备根据所述SINR值，确定所述至少一组参数值组合中的一组参数值组合，并获取所述第一信道状态信息。
可选的，所述终端设备还确定了所述至少一组参数值组合对应的传输特性，或者所述终端设备还根据所述下行控制信息确定了传输特性，则所述终端设备根据所述SINR以及所述传输特性，确定所述至少一组参数值组合中的一组参数值组合，并获取所述第一信道状态信息。
可选的，所述第一信道状态信息为所述一组参数值组合中的CQI信息，或者，是与所述一组参数值组合对应的CQI信息。所述CQI信息可以为CQI索引。
这里需要说明的是，本申请实施例对于终端设备确定信道质量的方式不做限定，可以采用现有技术中所采用的任一种信道质量估计算法，也可以采用未来LTE演进系统或NR系统的信道质量估计技术。任何能够用于确定信道质量，以使得终端设备向接入网设备反馈信道状态信息的方式都可以应用于本申请实施例。
步骤405：所述接入网设备确定第二信道状态信息。
该步骤可由接入网设备的收发器202执行，或者由接入网设备的处理器201控制收发器202执行，或者由接入网设备的处理器201执行。
一可选的设计中，所述接入网设备自行确定所述第二信道状态信息。
可选的，无关所述接入网设备是否接收到所述第一信道状态信息，所述接入网设备自行确定所述第二信道状态信息。具体的，所述接入网设备可以根据预先定义或配置的规则确定。可选的，所述第二信道状态信息可以为调制方式信息，例如MCS索引。进一步可选的，所述第二信道状态信息还可以包含传输块大小TBS。
可选的，根据所述终端设备发送的所述第一信道状态信息，以及与下行数据传输信息，所述接入网设备获取所述信道状态信息，其中，所述下行数据传输信息可以为待发送的数据量、可使用的资源大小等中的一个或多个。例如，接入网设备接收到所述第一信道状态信息，所述第一信道状态对应于第一调制编码方式，并确定待发送的下行数据量小于第一阈值，和/或可供下行传输的资源大小小于第二阈值，则接入网设备确定使用第二调制编码方式发送下行数据，所述第二信道状态信息对应于所述第二调制编码方式。可选的，所述接入网设备向所述终端设备发送所述第二信道状态信息，所述终端设备根据所述第二信道状态信息确定所述第二调制编码方式，进一步，所述终端设备确定下行数据的传输块大小。可选的，所述第二信道状态信息可以为调制方式信息，例如MCS索引。进一步可选的，所述第二信道状态信息还可以包含传输块大小TBS。
又一可选的设计中，所述终端设备向所述接入网设备发送所述第一信道状态信息，所述接入网设备从所述终端设备接收所述第一信道状态信息，作为所述第二信道状态信息。
步骤406：所述接入网设备根据所述第二信道状态信息，向所述终端设备发送下行数据。
该步骤可由接入网设备的收发器202执行。
可选的，所述接入网设备根据所述第二信道状态信息，确定第二调制编码方式以及传输块大小，以用于下行数据的发送。其中，所述下行数据采用所述第二调制编码方式以及相应的传输块大小。
通过上述步骤中的一个或多个步骤所实现的通信方法，可以实现接入网设备通过下行控制信息指示终端设备进行信道状态信息的确定和上报，提高了系统的处理效率，同时提高了信道状态反馈的灵活性和准确性。
需要说明的是，本申请实施例中所涉及的接入网设备的确定操作可以通过处理器201执行，接入网设备的收发操作可以通过收发器202执行，或者通过处理器201控制收发器202执行，接入网设备的获取操作可以通过收发器202或者处理器201执行，具体视获取方式而定；终端设备的确定操作可以通过处理器304执行，终端设备的获取操作可以通过处理器304或者收发器301执行，或者由处理器304控制收发器301执行，具体视获取方式而定，终端设备的收发操作可以通过收发器301执行。
本申请实施例中，在所述步骤401之前还包括步骤400：接入网设备从多组参数值组合中确定所述至少一组参数值组合。所述多组参数值组合的解释参见上文的阐述。
其中，所述至少一组参数值组合可以为所述多组参数值组合的第一子集。所述多组参数值组合可以包含多个子集，所述子集由所述多组参数值组合中的一组或多个参数值组合组成。所述多个子集的划分可以根据资源组合和/或传输特性进行划分。其中，所述资源组合是接入网设备进行信道状态请求所对应的资源组合，所述传输特性是终端设备确定并上报或反馈信道状态信息所依据的传输特性，所述传输特性可以包含但不限于误块率(Block Error Rate，BLER)、调制方式范围等中的一个或多个。所述资源组合可以包含一个或多个资源，所述传输特性可以包含一个或多个传输特性。
需要说明的是，这里的划分只是一种逻辑的划分。根据对应的不同资源组合和/或传输特性，所述多组参数值组合可以以不同的对应方式或者对应规则进行划分，以得到各自包含多个子集的多种不同的集合。即，所述多个子集对应于相同或不同的资源组合和/或一个或多个传输特性，并非进行了实际的划分，而是作为多个候选子集供接入网设备根据实际通信的需要进行选择。例如，子集1和子集2对应不同的资源组合，以及相同的第一传输特性和/或不同的第二传输特性等；又如，子集1和子集2对应相同的资源组合、不同的传输特性。所述对应方式或者对应规则可以是预先定义或者配置的，例如标准或协议中规定的。
第一种可选的设计中，根据资源组合对所述多组参数值组合进行划分，即所述多组参数值组合包含多个子集，所述多个子集中每个子集对应于相应的资源组合，或者，所述多个子集分别对应不同的资源组合，对应关系可以是预先定义或者配置的。所述资源组合的类型可以为载波组合、载波BWP组合以及CSI进程等其它可能的资源组合中的任一种。对于所述CSI进程，当链路自适应在接入网设备侧执行时，通常需要基于终端设备侧所提供的CSI报告进行链路自适应。为了实现协作的链路自适应，接入网设备侧将邻传输点(即相邻接入网设备)的数据传输决策纳入到速率选择的考虑因素当中，那么终端设备需要提 供多份CSI报告分别对应于多个传输点数据传输决策，则对应于上述多份CSI报告的进程称为CSI进程。以下将以举例的方式对本申请实施例进行解释。
第一种实现中，根据载波组合对所述多组参数值组合进行划分。
具体的，所述多个子集分别对应于不同的载波组合。例如，子集1对应第一载波组合，子集2对应于第二载波组合，所述第一载波组合和第二载波组合不同。其中，一个载波组合包含一个或多个载波。
第二种实现中，根据载波带宽区域BWP组合对所述多组参数值组合进行划分。
具体的，所述多个子集分别对应于不同的载波BWP组合。例如，子集1对应于第一载波BWP组合，子集2对应于第二载波BWP组合。所述第一载波BWP组合和第二载波BWP组合不同。其中，一个载波BWP组合包含一个或多个载波BWP，所述多个载波BWP可以位于相同或不同的载波内。
第三种实现中，根据CSI进程组合对所述多组参数值组合进行划分。
具体的，所述多个子集分别对应于不同的CSI进程组合。例如，子集1对应于第一组CSI进程，子集2对应于第二组CSI进程。所述第一组CSI进程和第二组CSI进程不同。其中，一组CSI进程包含一个或多个CSI进程。
第二种可选的设计中，根据传输特性对所述多组参数值组合进行划分，即所述多组参数值组合包含多个子集，所述多个子集每个子集对应于相应的传输特性值，或者，所述多个子集分别对应不同的传输特性值，所述对应关系是预先定义或者配置的。所述传输特性可以为误块率(Block Error Rate，BLER)、调制方式范围等中的一个或多个。可选的，BLER值可以为10 -4、10 -5或者更低的值；调制方式范围可以为最高支持64QAM、256QAM或者更高的调制方式，这里不对传输特性的值做具体的限定，现有技术中的传输特性以及未来的LTE演进系统或NR系统中可能的传输特性以及对应的传输特性值均可以用于本申请实施例。
下面以传输特性为BLER和/或调制方式范围为例进行阐述，不作为对本申请实施例中传输特性的具体限定，其它可能的传输特性仍然属于本申请实施例保护的范围。
第一种实现中，所述传输特性为一个第一传输特性，例如BLER或调制方式范围。不同的第一传输特性值对应相同或不同的子集，所述第一传输特性值与子集的对应关系可以是预先定义或配置的。
以第一传输特性为BLER值为例，若BLER1值为10 -4，BLER2值为10 -5，根据预先定义或配置的规则，所述多组参数值组合中的子集1对应于BLER1，子集2对应于BLER2：
可选的，所述子集1和子集2可以包含一组或多组相同的参数值组合，但是子集1和子集2不相同。进一步的，所述子集1和子集2可以对应相同或不同的第二传输特性。例如，子集1和子集2支持的调制方式范围相同。
以第一传输特性为调制方式范围为例，若第一范围为最高支持64QAM，第二范围为最高支持256QAM，根据预先定义或配置的规则，所述多组参数值组合中的子集1对应于第一范围，子集2对应于第二范围：
可选的，所述所述子集1和子集2可以包含一组或多组相同的参数值组合，但是子集1和子集2不相同。进一步的，所述子集1和子集2可以对应相同或不同的第二传输特性。例如，子集1和子集2对应的BLER值相同。
第二种实现中，所述传输特性为多个传输特性，则用于划分子集的为多个传输特性值的组合，例如第一和第二传输特性值的组合。传输特性值组合与子集的对应关系可以是预先定义或配置的。
以传输特性值组合为BLER值和调制方式范围为例，结合第一种可选的设计中对BLER值和调制方式范围的解释可知，所述多组参数值组合可以包含四个子集，子集1对应于BLER1和第一范围，子集2对应于BLER1和第二范围，子集3对应于BLER2和第一范围，子集4对应于BLER2和第二范围。其中，子集1、2、3、4为不完全相同的4个子集，这里的不完全相同是指至少存在两个不相同的子集。这里需要说明的是，在存在第三传输特性用于与第一和第二传输特性组合进一步用于子集划分的前提下，子集1、2、3、4仍然可以为相同的子集。
第三种可选的设计中，根据资源组合和传输特性对所述多组参数值组合进行划分，即所述多组参数值组合包含多个子集，所述多个子集对应于相应的资源组合和传输特性，或者，所述多个子集分别对应不同的组合，所述组合为资源组合和传输特性的组合，所述对应关系是预先定义或配置的。具体的，所述多个子集分别对应不同的资源组合和传输特性的组合表示每个子集对应的资源组合和传输特性的组合不同于所述多个子集中的其它子集。
在该可选的设计中，所述资源组合和传输特性的含义和解释参见上述第一和第二可选的设计，这里不再赘述。根据上述阐述可知，在存在可用于划分多组参数值组合的多种可能的类型的资源组合以及划分多组参数值组合的多种可能的传输特性的前提下，以资源组合和传输特性为组合进行子集的划分存在多种可能的实现，这里不再一一列举，仅以下面几种可能的实现为例进行阐述，不作为对该可选的设计的可能实施方式的具体限定，例如涉及具体资源类型的特征可以用任意一种或多种资源类型的组合替代，涉及具体传输特性的特征可以用任意一种或多种传输特性替代。
第一种实现中，以所述资源组合为载波组合和传输特性为BLER的方式划分所述多组参数值组合。其中，所述多组参数值组合包含第一子集和第二子集。
可选的，所所述第一子集和第二子集均对应于第一误块率BLER；进一步可选的，所述第一子集和第二子集对应于不同的载波组合或者资源组合。
可选的，所述第一子集对应于第一误块率BLER，所述第二子集对应于第二误块率BLER，所述第一BLER和第二BLER的值不同；进一步可选的，所述第一子集和第二子集对应于不同或相同的载波组合或者资源组合。
可选的，所述第一子集对应于第一误块率BLER以及第二误块率BLER，所述第一BLER和第二BLER的值不同；进一步可选的，所述第一子集还可以同时对应于多种不同的载波组合或资源组合。
例如，所述多组参数值组合至少包含子集1和子集2。其中，子集1对应于第一载波组合以及BLER1，则子集2可以对应于第二载波组合以及BLER1，或者，对应于第一载波组合和BLER2。可选的，所述子集1还可以同时对应于第三载波组合以及BLER2。所述第三载波组合不同于所述第一载波组合和第二载波组合。
这里需要说明的是，上述三种可选的设计中举例性说明的部分所涉及到的具体的资源组合和/或传输特性均可以用其它可能的资源组合类型或传输特性替代。本申请实施例部 分限于篇幅原因，未对所有可能的实现方式进行一一列举，但是所有可替代或替换的方式均在本申请实施例的范围之内。例如，载波组合可以替换为载波BWP组合，BLER可以替换为调制方式范围等。
在步骤400中，接入网设备从多组参数值组合中确定所述至少一组参数值组合，以用于指示终端设备根据所述至少一组参数值组合确定需要上报或反馈的信道状态信息。可选的，所述接入网设备可以根据预先定义或者配置的规则从所述多组参数值组合中确定所述至少一组参数值组合。进一步可选的，所述规则可以与终端设备的能力、目标BLER值以及信噪比等相关。
接入网设备确定所述至少一组参数值组合后，需要将所述至少一组参数值组合指示给终端设备，以供终端设备确定需要上报或反馈的相应资源组合的信道状态信息。在步骤401中，接入网设备向终端设备发送下行控制信息，所述下行控制信息用于指示所述确定的所述至少一组参数值组合。具体的，可以通过所述下行控制信息中的信道状态请求信息(例如通过至少一个比特位和/或扰码信息作为信道状态请求信息)、所述下行控制信息的格式的至少一项进行指示。
在步骤403所述终端设备接收到所述下行控制信息后，通过所述下行控制信息的指示，确定所述至少一组参数值组合。所述下行控制信息的指示与所述至少一组参数值组合的对应关系是预先定义或配置的，例如标准或协议中规定的。在步骤403中，所述终端设备根据所述对应关系，在接收到所述下行控制信息后，确定所述至少一组参数值组合。具体的对应关系在下文中以举例的方式阐述。基于所述至少一组参数值组合与上文中阐述的资源组合和/或传输特性的对应关系，所述终端设备能够通过所述下行控制信息的指示，确定需要上报或反馈信道状态的资源组合，和/或所依据的传输特性。
进一步，若所述多组参数值组合在一个表格或者多个表格中或者类似的方式(这里类似的方式是指其它可以体现所述多组参数值组合，并可以提供所述多组参数值组合的分组和顺序关系的方式)定义或者体现。为阐述方便，下面均以表格方式为例。
若所述多组参数值组合对应一个表格，则所述下行控制信息指示所述终端设备获取所述表格中的至少一组参数值组合，例如，所述下行控制信息指示的为所述至少一组参数值组合在所述多组参数值组合，即所述表格，中的位置信息，所述位置信息包含以下中的一个或多个：从所述多组参数值组合中获取所述至少一组参数值组合的起始位置；所述至少一组参数值组合在所述多组参数值中的分布信息，所述分布信息用于指示所述至少一组参数值组合为所述多组参数值中等间隔或不等间隔分布的至少一组参数值组合，可选的，还可以包含间隔值；以及所述至少一组参数值组合中包含的参数值组合的组数。这里需要说明的是，所述位置信息中的任一项或多项也可以通过是预先定义或配置的，不需要指示，终端设备能够预先确定，例如，预先定义所述组数为一个常数，如16等。
进一步，所述位置信息的指示可以为隐式或者显示的指示；在隐式指示的情况下，所述位置信息与所述下行控制信息的指示存在对应关系，所述对应关系是预先定义或配置的，终端设备在接收到所述下行控制信息后，根据所述下行控制信息的指示确定所述至少一组参数值组合，并进一步根据所述至少一组参数值组合与上文中阐述的资源组合和/或传输特性的对应关系，确定需要上报或反馈信道状态的资源组合，和/或所依据的传输特性；在显示指示的情况下，可以通过所述下行控制信息指示具体的位置信息，以使得所述 终端设备通过所述位置信息确定所述至少一组参数值组合。
若所述多组参数值组合对应多个表格，且所述多组参数值组合的每个子集分别对应于至少一个表格，则所述下行控制信息需要指示所述终端设备获取所述多个表格中的至少一个表格，所述至少一个表格对应于所述至少一组参数值组合，例如可以指示相应表格的索引，或者其他可能的信息。其中，所述下行控制信息的指示与所述至少一组参数值组合(例如与相应表格的索引或者其他可能的信息)的对应关系是预先定义或配置的，则所述终端设备根据所述对应关系确定所述至少一组参数值组合对应的至少一个表格。
这里需要说明的是，上文中所阐述的多组参数值组合可以根据多种方式划分子集，在根据某种方式划分得到多个子集后，所述多个子集均可以通过所述下行控制信息指示，以指示所述终端设备进行相应的上报或反馈。
第一种可选的设计中，通过下行控制信息中的信道状态请求信息指示所述至少一组参数值组合。所述信道状态请求信息可以为由至少一个比特位组成的信道状态信息请求域和扰码信息的至少一个。
可选的，通过预先定义或配置所述下行控制信息中N个比特位作为信道状态请求信息，这N个比特位可以称为CSI请求域。所述N个比特位的比特状态用于指示所述多个参数值组合中的子集。所述N可以为任意正整数，所述N的大小可以通过所述多组参数值组合通过特定方式划分得到的多个子集的个数确定，或者预先定义或配置。进一步可选的，所述N个比特位可以为在现有技术中已有的下行控制信息格式的基础上新增比特位后划分得到的N个比特位，或者可以为现有技术中已有的下行控制信息格式中已有的CSI请求域(N1个比特位)与新增的(N-N1)个比特位结合得到的，所述新增的比特位可以是复用已有下行控制信息格式中的其他字段，也可以是基于已有下行控制信息格式新增加的字段，又或者是现有技术中已有的下行控制信息格式中的信道状态信息请求字段，所述信道状态请求字段通过联合编码的方式同时指示信道状态请求以及所述至少一组参数值组合，例如下行控制信息格式1或4中的CSI请求域，再或者是对现有技术中已有的下行控制信息格式中的任一字段的复用。
进一步，若所述多组参数值组合的每个子集分别对应至少一个表格，则所述信道状态请求信息指示所述至少一个表格，所述终端设备根据所述所述信道状态请求与所述至少一个表格的对应关系获取所述至少一个表格；若所述多组参数值组合对应于一个表格，则所述所述信道状态请求信息指示所述表格中的所述至少一组参数值组合的位置信息，所述终端设备根据所述位置信息获取所述至少一组参数值组合。
例如，若N＝2，下行控制信息中该CSI请求域的比特值为10，则终端设备根据子集1反馈第一资源组合的信道状态信息；下行控制信息中该CSI请求域的比特值为11，则终端设备根据子集2反馈第二资源组合的信道状态信息。这种方式中，所述下行控制信息中的信道状态请求同时指示了资源组合。具体参照图5。
又如，若N＝2，下行控制信息中该CSI请求域的比特值为10，则终端设备根据子集1反馈信道状态信息；下行控制信息中该CSI请求域的比特值为11，则终端设备根据子集2反馈信道状态信息。这种方式中，所述下行控制信息中的信道状态请求仅指示了所述至少一组参数值组合，
进一步，若所述子集1为一个表格(这里成为主表)中的至少一组参数值组合，则所 述比特值为10时，所述下行控制信息指示信道配置参数中的CQI索引为0开始，间隔为5的16组参数值组合(这里称为子表1)，所述比特值为11时，所述下行控制信息指示信道配置参数中CQI索引为0开始，间隔为1的16组参数值组合(这里称为子表2)。
可选的，通过扰码信息指示所述至少一组参数值组合。进一步可选的，所述扰码信息可以为循环冗余校验(Cyclic Redundancy Check,CRC)码。所述扰码信息可以由多个比特位组成，所述多个比特位的第一取值组合用于指示所述至少一组参数值组合。例如，所述扰码信息包含4个比特位，1110用于指示代表所述至少一组参数值组合的子集1,1101用于指示代表另外的参数值组合的子集2。具体的指示方式可以参照上述通过下行控制信息中的N个比特位作为信道状态请求信息进行指示的实施，两者实现方式相同或相似。
可选的，通过N个比特位的信道状态请求信息和扰码信息指示所述至少一组参数值组合。该可选的实现中，可以通过上述两组比特位同时指示所述至少一组参数值组合。例如，可以通过两组比特位的组合，例如N+4个比特位，指示所述至少一组参数值组合。又如，通过上述N个比特位指示所述多组参数值组合中的部分子集，通过上述4个比特位(即扰码信息)指示所述多组参数值组合中的另外一部分子集。这里不做具体的限定，具体实现可以参见并结合上文的相关阐述。
第二种可选的设计中，通过下行控制信息的格式信息指示所述至少一组参数值组合。
可选的，通过不同的下行控制信息格式指示所述多个参数值组合中的不同子集。其中，所述下行控制信息格式与子集之间的对应关系是预先定义或配置的。进一步可选的，所述下行控制信息中承载了信道状态信息请求，例如通过所述下行控制信息中的信道状态请求信息，所述信道状态请求信息可以参见上文的阐述，所述信道状态信息请求用于请求或指示终端设备上报信道状态信息，所述信道状态信息是根据所述下行控制信息格式指示的子集确定的。
例如，LTE系统中上行链路(UL)调度的DCI格式0和4中定义了CSI请求域，请求域的长度可以为2、3、4或5个比特。则在CSI请求域指示了信道状态信息请求的前提下，不同的格式用于指示不同的子集，例如，格式0用于指示子集1，格式4用于指示子集2；又如，格式0A用于指示子集1，格式0B用于指示子集2。
进一步，若所述多组参数值组合的每个子集分别对应至少一个表格，则所述格式信息指示所述至少一个表格，所述终端设备根据所述格式信息与所述至少一个表格的对应关系获取所述至少一个表格；若所述多组参数值组合对应于一个表格，则所述格式信息指示所述表格中的所述至少一组参数值组合的位置信息，所述终端设备根据所述位置信息获取所述至少一组参数值组合。
步骤404中，所述终端设备根据所述至少一组参数值组合，获取第一信道状态信息，所述第一信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合。在所述步骤404之前或之中，所述方法还包括，所述终端设备确定第一资源组合和传输特性，并根据所述传输特性检测或确定第一资源组合的信道状态或信道质量，以在步骤404中，根据所述至少一组参数值组合，获取对应于所述第一资源组合的信道状态的第一信道状态信息。这里需要说明的是，所述至少一组参数值组合的获取方式以及接入网设备对所述至少一组参数值组合的指示方式参见上文的阐述，这里不再赘述。
第一种可选的设计中，所述第一资源组合是预先配置的、通过高层信令通知的或者通 过所述至少一组参数值组合可以确定的，则所述终端设备还根据所述下行控制信息确定所述传输特性。
可选的，所述至少一组参数值组合与所述第一资源组合存在对应关系，所述终端设备获取所述至少一组参数值组合的同时，确定对应的所述第一资源组合。进一步，所述终端设备还需要根据所述下行控制信息确定所述传输特性。
例如，所述终端设备通过所述信道状态请求信息获取所述至少一组参数值组合，并通过所述下行控制信息格式确定所述传输特性，不同的下行控制信息格式用于指示不同的传输特性。例如，格式1用于指示BLER1，格式2用于指示BLER2。
又如，所述终端设备通过所述下行控制信息的格式获取所述至少一组参数值组合，并通过所述信道状态请求信息确定所述传输特性。例如，CSI请求域的2个比特位为10时，指示BLER1；2个比特位为11时，指示BLER2。
第二种可选的设计中，所述传输特性是预先配置的、通过高层信令通知的或者通过所述至少一组参数值组合可以确定的，所述终端设备还根据所述下行控制信息确定所述第一资源组合。参照第一种可选的设计中的阐述。
第三种可选的设计中，所述第一资源组合和所述传输特性均是预先配置的、通过高层信令通知的或者通过所述至少一组参数值组合可以确定的。
可选的，所述至少一组参数值组合与第一资源组合和传输特性存在对应关系，所述终端设备根据所述至少一组参数值组合，能够确定所述第一资源组合和传输特性。或者说，所述终端设备获取所述至少一组参数值组合的同时，确定所述第一资源组合和传输特性。
第四种可选的设计中，所述第一资源组合和所述传输特性均是通过所述下行控制信息确定的。
在该可选的设计中，所述终端设备获取所述至少一组参数值组合，还需要根据所述下行控制信息确定相应的资源组合以及传输特性，以确定需要上报的信道状态信息。例如，所述终端设备可以根据下行控制信息的格式和下行控制信息承载的信道状态请求信息中的至少一个确定所述资源组合和/或传输特性。
根据上文的阐述以及上述四种可选的设计可知，所述终端设备可以根据所述下行控制信息确定资源组合和/或传输特性，具体包括以下实现方式中的至少一个：
第一种实现方式，所述至少一组参数值组合与第一资源组合和第一传输特性存在对应关系，或者所述至少一组参数值组合对应于所述第一资源组合和第一传输特性。采用联合编码的方式，所述终端设备根据所述至少一组参数值组合可以确定所述第一资源组合和相应的第一传输特性；其中，所述对应关系是预先定义或配置的，具体参见上文中的阐述，所述终端设备可以获取所述对应关系并确定所述第一资源组合和相应的第一传输特性。
例如，下行控制信息中的CSI请求域的比特值为10，或者下行控制信息的格式为Format 0，则指示终端设备根据子集1反馈信道状态信息，所述子集1对应于第一资源集合和第一传输特性，如上文所述，所述对应关系已经体现在子集的划分中。即，通过所述下行控制信息的指示，所述终端设备根据所述子集1(所述至少一组参数值组合)确定并上报针对第一资源集合、满足第一传输特性的信道状态信息。
第二种实现方式，所述至少一组参数值组合与第一资源组合和第一传输特性中的一个存在对应关系，或者所述至少一组参数值组合对应于所述第一资源组合和第一传输特性中 的一个。所述终端设备根据所述至少一组参数值组合可以确定所述第一资源组合和相应的第一传输特性中的一个。其中，所述对应关系是预先定义或配置的，具体参见上文中的阐述，所述终端设备可以获取所述对应关系并确定所述第一资源组合和相应的第一传输特性中的一个。进一步，所述下行控制信息通过不同于指示所述至少一组参数值组合的方式，指示所述第一资源组合和第一传输特性中的另外一个。
第一种可选的，所述信道状态请求信息用于指示所述至少一组参数值组合，以及对应于所述至少一组参数值组合的第一资源组合和第一传输特性中的一个；所述下行控制信息的格式用于指示所述第一资源组合和第一传输特性中的另外一个。
例如，采用联合编码的方式，所述信道状态请求信息用于同时指示所述至少一组参数值组合以及对应于所述至少一组参数值组合的第一资源组合和第一传输特性中的一个；具体的。又如，使用信道状态请求信息的不同部分分别指示所述至少一组参数值组合，以及所述资源组合和传输特性中的至少一个；具体的，所述信道状态请求信息包含多组比特位，一组比特位的值用于指示所述至少一组参数值组合，另外的一组或者多组比特位的值用于指示所述资源组合和传输特性中的至少一个。
第二种可选的，通过所述下行控制信息的格式指示所述至少一组参数值组合，以及对应于所述至少一组参数值组合的第一资源组合和第一传输特性中的一个；所述下行控制信息中的信道状态请求信息用于指示所述第一资源组合和第一传输特性中的另外一个。具体实现参照上述第一种可选的方式。
进一步，步骤404中，所述终端设备获取第一信道状态信息，所述第一信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合。所述第一信道状态信息可以为能够用于指示所述一组参数值组合的任意信息，例如CQI信息，进一步的，可以为CQI索引。所述终端设备向所述接入网设备发送所述第一信道状态信息，所述第一信道状态信息可供所述接入网设备确定用于下行数据传输的调制编码信息和/或传输块大小。
通过本发明上述实施例，可以实现接入网设备可以通过下行控制信息指示终端设备进行信道状态信息的确定和上报，提高了系统的处理效率，同时提高了信道状态反馈的灵活性和准确性。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，各个网元，例如接入网设备、终端设备等为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
下面基于图3中终端设备的可能的结构进行进一步解释。终端设备能够执行本申请实施例任一种方法，该终端设备至少可以包括：收发器301以及处理器304(这里上位表述为处理器，可以代表调制解调器处理器304本身，或者调制解调器304和应用处理器302的集成)。可选的，还可以包含存储器等图3以及关于图3的阐述中的其他部件。这里收发器301可以由独立的接收器和发送器组成，单独执行相应的接收和发送功能，也可以是集成了接收和发送功能的收发器。这里不做进一步限定。结构上，图3中的收发器301可 以拆分为接收器301A和发射器301B。这里，由于终端设备只是作为一种可选的主体的示例性说明，接下来以无线装置为主体进行说明，所述无线装置可以为终端设备所包含的一个单元、芯片或者部件，或者终端设备本身。
所述无线装置，包括处理器304和接收器301A，其中：
所述接收器301A用于从接入网设备接收下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
所述处理器304用于根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合，所述参数值组合信道配置参数的参数值组合；
所述处理器304还用于据所述至少一组参数值组合，获取第一信道状态信息，所述第一信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合。
可选的，所述无线装置还包括发射器301B，所述发射器301B用于将所述第一信道状态信息发送到所述接入网设备。
可选的，所述处理器304还用于根据所述下行控制信息包含的信道状态请求信息确定所述至少一组参数值组合，或者，根据所述下行控制信息的格式确定所述至少一组参数值组合。
可选的，处理器304还用于确定所述至少一组参数值组合在所述多组参数值组合中的位置信息，以确定所述第一参数值组合。
进一步可选的，所述至少一组参数值组合在所述多组参数值组合中的位置信息包含以下中的一个或多个：
从所述多组参数值组合中获取所述至少一组参数值组合的起始位置；
所述至少一组参数值组合在所述多组参数值中的分布信息，所述分布信息用于指示所述至少一组参数值组合为所述多组参数值中等间隔或不等间隔分布的至少一组参数值组合；以及
所述至少一组参数值组合中包含的参数值组合的组数。
可选的，所述处理器304还根据所述下行控制信息确定第一资源组合，所述第一信道状态信息指示所述第一资源组合的信道状态。
可选的，所述处理器304还根据所述下行控制信息包含的信道状态请求信息确定所述第一资源组合，或者，根据所述下行控制信息的格式确定所述第一资源组合。
需要说明的是，上述无线装置执行的通信方法的具体实施方式可参见本申请实施例和提供的通信方法的描述。本申请实施例的终端设备与图4对应的通信方法基于同一构思，其带来的技术效果与上述通信方法相同。本申请实施例中无线装置所包含的处理器和接收器的具体功能以及其中所涉及的任何特征、术语和实现细节与图4对应的方法实施例中的终端设备的功能相对应。具体内容可分别参见本发明图4对应的方法实施例中的叙述，此处不再赘述。
需要说明的是，在上述实施例中，无线装置可以全部或部分地通过软件、硬件、固件或者其任一组合来实现。
对于所述无线装置的结构，另一种可选的方式为，上述实施例中的相应的部件可以是由相应的硬件实现，也可以由相应的硬件执行相应的软件完成，例如，前述的接收器301A，可以是具有执行前述接收功能的硬件，例如集成收发功能的收发器或者仅实现接收功能的 接收器，也可以是能够执行相应计算机程序从而完成前述功能的一般处理器或者其他硬件设备，还可以是执行相应功能的软件模块或者功能单元，例如接收单元；又如前述的处理器304，可以是具有执行所述处理器功能的硬件，例如特定功能的处理器，或者一般处理器，也可以是能够执行相应计算机程序从而完成前述功能的其他硬件设备，还可以是还可以是执行相应功能的软件模块或者功能单元，例如处理单元；再如，前述的发射器301B，可以是具有执行前述发送功能的硬件，例如集成收发功能的收发器，或者仅实现发射功能的发射器，也可以是能够执行相应计算机程序从而完成前述功能的一般处理器或者其他硬件设备，还可以是执行相应功能的软件模块或者功能单元，例如发射单元。可选的，还可以包含存储单元。具体参见图6。
下面基于图2中接入网设备的可能的结构进行进一步的解释。该接入网设备能够执行本申请实施例任一种方法。该接入网设备至少可以包括：控制器或处理器201(下文以处理器201为例进行说明)以及收发器202。可选的，还可以包含存储器等图2以及关于图2的阐述中的其他部件。这里收发器202可以由独立的接收器和发送器组成，单独执行相应的接收和发送功能，也可以是集成了接收和发送功能的收发器。这里不做进一步限定。结构上，图2中的收发器202可以拆分为接收器202A和发射器202B。这里，由于接入网设备只是作为一种可选的主体的示例性说明，接下来以无线装置为主体进行说明，所述无线装置可以为接入网设备所包含的一个单元、芯片或者部件，或者接入网设备本身。
所述无线装置，包括处理器201和发射器202B，其中：
所述发射器202B用于向终端设备发送下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
所述处理器201用于确定第二信道状态信息；
所述发射器202B根据所述第二信道状态信息，向所述终端设备发送下行数据；
其中，所述下行控制信息还用于指示多组参数值组合中的至少一组参数值组合，所述参数值组合为信道配置参数的参数值组合，所述至少一组参数值组合用于确定所述信道状态信息。
可选的，所述无线装置包括接收器202A,所述接收器202A用于从所述终端设备接收第一信道状态信息。所述处理器201确定所述接收器202A接收的第一信道状态信息为所述第二信道状态信息。
可选的，所述处理器201从所述多组参数值组合中确定所述至少一组参数值组合。
需要说明的是，上述无线装置执行的通信方法的具体实施方式可参见本申请实施例提供的通信方法的描述。本申请实施例中接入网设备与图4对应的通信方法基于同一构思，其带来的技术效果与上述控制资源获取方法相同。本申请实施例中无线装置所包含的处理器和接收器的具体功能以及其中所涉及的任何特征、术语和实现细节与图4对应的方法实施例中的接入网设备的功能相对应。具体内容可参见本发明图4对应的方法实施例中的叙述，此处不再赘述。
需要说明的是，在上述实施例中，无线装置可以全部或部分地通过软件、硬件、固件或者其任一组合来实现。
对于所述无线装置的结构，另一种可选的方式为，上述实施例中的相应的部件可以是由相应的硬件实现，也可以由相应的硬件执行相应的软件完成，例如，前述的发射器202B， 可以是具有执行前述发送功能的硬件，例如集成收发功能的收发器或者仅实现接收功能的发射器，也可以是能够执行相应计算机程序从而完成前述功能的一般处理器或者其他硬件设备，还可以是执行相应功能的软件模块或者功能单元，例如发射单元；又如前述的处理器201，可以是具有执行所述处理器功能的硬件，例如特定功能的处理器，或者一般处理器，也可以是能够执行相应计算机程序从而完成前述功能的其他硬件设备，还可以是还可以是执行相应功能的软件模块或者功能单元，例如处理单元；再如，前述的接收器202A,可以是具有执行前述接收功能的硬件，例如集成收发功能的收发器，或者仅实现接收功能的接收器，也可以是能够执行相应计算机程序从而完成前述功能的一般处理器或者其他硬件设备，还可以是执行相应功能的软件模块或者功能单元，例如接收单元。可选的，还可以包含存储单元。具体参见图6。
可以理解的是，附图仅仅示出了无线装置的简化设计。在实际应用中，无线装置可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等。
本申请实施例还提供一种通信系统，其包含执行本发明上述实施例所提到的至少一个接入网设备以及至少一个终端设备。
本申请实施例还提供一种装置(例如，集成电路、无线设备、电路模块等)用于实现上述通信方法。实现本文描述的功率跟踪器和/或供电发生器的装置可以是自立设备或者可以是较大设备的一部分。设备可以是(i)自立的IC；(ii)具有一个或多个1C的集合，其可包括用于存储数据和/或指令的存储器IC；(iii)RFIC，诸如RF接收机或RF发射机/接收机；(iv)ASIC，诸如移动站调制解调器；(v)可嵌入在其他设备内的模块；(vi)接收机、蜂窝电话、无线设备、手持机、或者移动单元；(vii)其他等等。
本申请实施例提供的方法和装置，可以应用于终端设备或接入网设备(可以统称为无线设备)。该终端设备或接入网设备或无线设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、以及即时通信软件等应用。并且，在本申请实施例中，本申请实施例并不限定方法的执行主体的具体结构，只要能够通过运行记录有本申请实施例的方法的代码的程序，以根据本申请实施例的传输信号的方法进行通信即可，例如，本申请实施例的无线通信的方法的执行主体可以是终端设备或接入网设备，或者，是终端设备或接入网设备中能够调用程序并执行程序的功能模块。
此外，本申请实施例的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于:磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质” 可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种通信方法，其特征在于，所述方法包括：
    终端设备从接入网设备接收下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
    所述终端设备根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合，所述参数值组合为信道配置参数的参数值组合；
    所述终端设备根据所述至少一组参数值组合，获取第一信道状态信息，所述第一信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合。
  2. 根据权利要求1所述的方法，所述终端设备根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合，包括：
    所述终端设备根据所述下行控制信息包含的信道状态请求信息确定所述至少一组参数值组合，或者
    所述终端设备根据所述下行控制信息的格式确定所述至少一组参数值组合。
  3. 根据权利要求1或2所述的方法，所述确定所述至少一组参数值组合，包括：
    确定所述至少一组参数值组合在所述多组参数值组合中的位置信息，以确定所述至少一组参数值组合。
  4. 根据权利要求3所述的方法，其特征在于：
    所述至少一组参数值组合在所述多组参数值组合中的位置信息包含以下中的一个或多个：
    从所述多组参数值组合中获取所述至少一组参数值组合的起始位置；
    所述至少一组参数值组合在所述多组参数值中的分布信息，所述分布信息用于指示所述至少一组参数值组合为所述多组参数值中等间隔或不等间隔分布的至少一组参数值组合；以及
    所述至少一组参数值组合中包含的参数值组合的组数。
  5. 根据权利要求1-4任一项所述的方法，其特征在于：
    所述终端设备还根据所述下行控制信息确定第一资源组合，所述第一信道状态信息指示所述第一资源组合的信道状态。
  6. 根据权利要求5所述的方法，其特征在于：所述终端设备还根据所述下行控制信息确定第一资源组合，包括：
    所述终端设备根据所述下行控制信息包含的信道状态请求信息确定所述第一资源组合，或者
    所述终端设备根据所述下行控制信息的格式确定所述第一资源组合。
  7. 一种通信方法，其特征在于，所述方法包括：
    接入网设备向终端设备发送下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
    所述接入网设备确定第二信道状态信息；
    所述接入网设备根据所述第二信道状态信息，向所述终端设备发送下行数据；
    其中，所述下行控制信息还用于指示多组参数值组合中的至少一组参数值组合，所述 参数值组合为信道配置参数的参数值组合，所述至少一组参数值组合用于确定所述信道状态信息。
  8. 根据权利要求7所述的方法，其特征在于
    所述接入网设备向终端设备发送下行控制信息之前，还包括：
    所述接入网设备从所述多组参数值组合中确定所述至少一组参数值组合。
  9. 根据权利要求7或8所述的方法，其特征在于：
    所述下行控制信息中的所述信道状态请求信息用于指示所述至少一组参数值组合，
    或者，
    所述下行控制信息的格式用于指示所述至少一组参数值组合。
  10. 根据权利要求7-9任一项所述的方法，其特征在于：
    所述下行控制信息包含的信道状态请求信息或者所述下行控制信息的格式通过指示所述至少一组参数值组合在所述多组参数值组合中的位置信息来指示所述至少一组参数值组合。
  11. 根据权利要求7-10任一项所述的方法，其特征在于：
    所述下行控制信息还用于指示第一资源组合；
    其中，所述信道状态请求信息用于请求所述第一资源组合的信道状态。
  12. 根据权利要求11所述的方法，其特征在于：
    所述下行控制信息包含的信道状态请求信息或者所述下行控制信息的格式用于指示所述第一资源集合。
  13. 根据权利要求1-12任一项所述的方法，其特征在于:
    所述至少一组参数值组合为所述多组参数值组合的第一子集；
    所述多组参数值组合中还包含不同于所述第一子集的第二子集，所述第二子集与所述第一子集对应于不同的信道状态请求信息或者不同的下行控制信息格式。
  14. 根据权利要求13所述的方法，其特征在于:
    所述第一子集和第二子集均对应于第一误块率BLER；或者
    所述第一子集对应于第一误块率BLER，所述第二子集对应于第二误块率BLER，所述第一BLER和第二BLER的值不同；或者
    所述第一子集对应于第一误块率BLER以及第二误块率BLER，所述第一BLER和第二BLER的值不同。
  15. 一种无线装置，包含接收单元和处理单元，其特征在于：
    所述接收单元，用于从接入网设备接收下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
    所述处理单元，用于根据所述下行控制信息，确定多组参数值组合中的至少一组参数值组合，所述参数值组合为信道配置参数的参数值组合；
    所述处理单元，还用于根据所述至少一组参数值组合，确定第二信道状态信息，所述第二信道状态信息用于指示所述至少一组参数值组合中的一组参数值组合。
  16. 根据权利要求15所述的无线装置，其特征在于：
    所述处理单元还用于根据所述下行控制信息包含的信道状态请求信息确定所述至少一组参数值组合，或者，根据所述下行控制信息的格式确定所述至少一组参数值组合。
  17. 根据权利要求15或16所述的无线装置，其特征在于：
    所述处理单元还用于确定所述至少一组参数值组合在所述多组参数值组合中的位置信息，以确定所述至少一组参数值组合。
  18. 根据权利要求17所述的无线装置，其特征在于：
    所述至少一组参数值组合在所述多组参数值组合中的位置信息包含以下中的一个或多个：
    从所述多组参数值组合中获取所述至少一组参数值组合的起始位置；
    所述至少一组参数值组合在所述多组参数值中的分布信息，所述分布信息用于指示所述至少一组参数值组合为所述多组参数值中等间隔或不等间隔分布的至少一组参数值组合；以及
    所述至少一组参数值组合中包含的参数值组合的组数。
  19. 根据权利要求15-18任一项所述的无线装置，其特征在于：
    所述处理单元还用于根据所述下行控制信息确定第一资源组合，所述第一信道状态信息指示所述第一资源组合的信道状态。
  20. 根据权利要求19所述的无线装置，其特征在于：
    所述处理单元还用于根据所述下行控制信息包含的信道状态请求信息确定所述第一资源组合，或者，根据所述下行控制信息的格式确定所述第一资源组合。
  21. 一种无线装置，包括发射单元和处理单元，其特征在于：
    所述发射单元用于向终端设备发送下行控制信息，所述下行控制信息包含信道状态请求信息，所述信道状态请求信息用于请求信道状态信息；
    所述处理单元用于确定第二信道状态信息；
    所述发射单元用于根据所述第二信道状态信息，向所述终端设备发送下行数据；
    其中，所述下行控制信息还用于指示多组参数值组合中的至少一组参数值组合，所述参数值组合为信道配置参数的参数值组合，所述至少一组参数值组合用于确定所述信道状态信息。
  22. 根据权利要求21所述的无线装置，其特征在于：
    所述处理单元还用于从所述多组参数值组合中确定所述至少一组参数值组合。
  23. 根据权利要求21或22所述的无线装置，其特征在于：
    所述下行控制信息中的所述信道状态请求信息用于指示所述至少一组参数值组合，
    或者，
    所述下行控制信息的格式用于指示所述至少一组参数值组合。
  24. 根据权利要求21-23任一项所述的无线装置，其特征在于：
    所述下行控制信息包含的信道状态请求信息或者所述下行控制信息的格式通过指示所述至少一组参数值组合在所述多组参数值组合中的位置信息来指示所述至少一组参数值组合。
  25. 根据权利要求21-24任一项所述的无线装置，其特征在于：
    所述下行控制信息还用于指示第一资源组合；
    其中，所述信道状态请求信息用于请求所述第一资源组合的信道状态。
  26. 根据权利要求25所述的无线装置，其特征在于：
    所述下行控制信息包含的信道状态请求信息或者所述下行控制信息的格式用于指示所述第一资源集合。
  27. 根据权利要求15-26任一项所述的装置，其特征在于：
    所述至少一组参数值组合为所述多组参数值组合的第一子集；
    所述多组参数值组合中还包含不同于所述第一子集的第二子集，所述第二子集与所述第一子集对应于不同的信道状态请求信息或者不同的下行控制信息格式。
  28. 根据权利要求27所述的无线装置，其特征在于：
    所述第一子集和第二子集均对应于第一误块率BLER；或者
    所述第一子集对应于第一误块率BLER，所述第二子集对应于第二误块率BLER，所述第一BLER和第二BLER的值不同；或者
    所述第一子集对应于第一误块率BLER以及第二误块率BLER，所述第一BLER和第二BLER的值不同。
  29. 一种装置，其包括一个或多个处理器，以及存储器，所述存储器上存储有计算机程序，其特征在于：
    所述计算机程序被所述一个或多个处理器执行时，使得所述装置实现权利要求1-14任一项所述的方法。
  30. 一种存储介质，其上存储有计算机程序，其特征在于：
    当所述计算机程序被一个或多个处理器执行时，实现权利要求1-14任一项所述的方法。
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Publication number Priority date Publication date Assignee Title
CN101557645A (zh) * 2008-04-08 2009-10-14 大唐移动通信设备有限公司 终端能力信息的传输方法及系统
CN102625355A (zh) * 2011-01-27 2012-08-01 华为技术有限公司 信道状态信息的测量方法及相关设备、系统
US20140056282A1 (en) * 2011-12-15 2014-02-27 Huawei Technologies Co., Ltd. Interference coordination method, base station, and communication system
CN105340209A (zh) * 2013-06-17 2016-02-17 三星电子株式会社 发射和接收信道状态信息的方法和装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101557645A (zh) * 2008-04-08 2009-10-14 大唐移动通信设备有限公司 终端能力信息的传输方法及系统
CN102625355A (zh) * 2011-01-27 2012-08-01 华为技术有限公司 信道状态信息的测量方法及相关设备、系统
US20140056282A1 (en) * 2011-12-15 2014-02-27 Huawei Technologies Co., Ltd. Interference coordination method, base station, and communication system
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