WO2020220351A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2020220351A1
WO2020220351A1 PCT/CN2019/085376 CN2019085376W WO2020220351A1 WO 2020220351 A1 WO2020220351 A1 WO 2020220351A1 CN 2019085376 W CN2019085376 W CN 2019085376W WO 2020220351 A1 WO2020220351 A1 WO 2020220351A1
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WO
WIPO (PCT)
Prior art keywords
information
message
type
channel state
state information
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PCT/CN2019/085376
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English (en)
Chinese (zh)
Inventor
毕文平
余政
杨育波
王宏
程型清
Original Assignee
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/CN2019/085376 priority Critical patent/WO2020220351A1/fr
Priority to CN201980095789.4A priority patent/CN113728556B/zh
Publication of WO2020220351A1 publication Critical patent/WO2020220351A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and device.
  • the fourth-generation communication system long term evolution-advanced (LTE-A) will continue to provide wireless communication services for its user equipment (UE) in the short term (or even long term).
  • enhanced machine type communication (eMTC) systems and other evolutionary systems for example, Further eMTC (FeMTC), Even Further eMTC (eFeMTC), additional MTC (AMTC)
  • eMTC enhanced machine type communication
  • FeMTC Further eMTC
  • eFeMTC Even Further eMTC
  • ATC additional MTC
  • the system, eMTC system and other evolved systems work in the LTE system and in the LTE frequency band.
  • the working bandwidth of eMTC terminals may usually be small and smaller than the working bandwidth of the LTE system.
  • the working bandwidth of eMTC terminals may be a narrowband NB, and an NB includes 6 consecutive physical resource blocks (physical resource blocks). , PRB), a PRB includes 12 subcarriers (subcarrier, SC). Due to its low power consumption, long sleep and other characteristics, the battery life of eMTC UE is long, which is expected to reach about 10 years.
  • the embodiments of the present application provide a communication method and device to solve the problem of how the UE reports the CQI and control channel repetition times.
  • an embodiment of the present application provides a communication method, including: a first device determines first information, the first information is used to indicate a type of channel state information reported by a second device, and the type is multiple channel states One of the information types; the first device sends a first message to the second device, and the first message carries (or includes or contains) the first information.
  • the accuracy of channel state information reporting can be improved. , Which can improve scheduling accuracy and improve resource utilization.
  • the first message may also carry second information, and the second information is used to trigger the second device to report the channel state information corresponding to the indicated type.
  • the first information and the second information can be carried in one message, so that signaling resources can be saved.
  • the first device may send a second message to the second device, the second message carries second information, and the second information is used to trigger the second device to report channel state information.
  • the above design can improve flexibility by decoupling sending the first information and the second information.
  • the first message may also carry third information, and the third information is used to indicate the bandwidth and/or bandwidth location corresponding to the channel state information.
  • the first information and the third information can be carried in one message, thereby saving signaling resources.
  • the first device may send a third message to the second device, the third message carries third information, and the third information is also used to indicate the bandwidth and/or bandwidth location corresponding to the channel state information.
  • the above design can improve flexibility by decoupling sending the first information and the third information.
  • the third message may also carry second information.
  • the first message is a random access response message media intervention control layer protocol data unit Random Access Response MAC PDU, or the first message is a random access response message media intervention control layer protocol data unit control element Random Access Response MAC CE.
  • the second message and/or the third message may also be Random Access Response MAC PDU, or Random Access Response MAC CE.
  • the first information may be indicated by a subheader of the MAC header field of the first message.
  • the subheader includes the E/T/R/R/BI field
  • the first information can be indicated by the first and/or second R field of the subheader, or the first and/or the first R field of the subheader.
  • the second R field is used to indicate the first information.
  • the second information can also be indicated by the first and/or second R field of the subheader, or the first and/or second R field of the subheader can be used to indicate the second information .
  • the subheader includes the E/T/RAPID field
  • the first information can be indicated by the RAPID field of the subheader, or the RAPID field of the subheader is used to indicate the first information.
  • the second information may be indicated by the RAPID field of the subheader, or the RAPID field of the subheader may be used to indicate the second information.
  • the first message may be MAC CE or MAC PDU for indication.
  • the second message and/or the third message may also be MAC CE or MAC PDU for indication.
  • the MAC CE and MAC PDU may be sent by the first device to the second device in the connected state.
  • the logical channel identifier LCID field of the subheader may be the first value.
  • the UL-SCH/DL-SCH MAC PDU subheader includes the R/F2/E/LCID field, and the first information can be passed through the R/F2/E/LCID field of the UL-SCH/DL-SCH MAC PDU subheader. At least one field in the F2/E field indicates.
  • the first message may be control information.
  • the second message and/or the third message may also be control information.
  • the first information or the second message may be indicated by the channel state information request CSI request field of the first message.
  • the multiple channel state information types may include the first type and the second type; or, the multiple channel state information types include the first type, the second type, and the third type; among them, the first type It is a channel quality indicator, the second type is the number of channel repetitions, and the third type is a channel quality indicator and the number of channel repetitions.
  • an embodiment of the present application provides a communication method, including: a second device receives a first message sent by a first device, the first message carries first information, and the first information is used to instruct the second device The type of the reported channel state information, where the type is one of multiple channel state information types; the second device reports the channel state information corresponding to the type indicated by the first information.
  • the second device by defining the relationship between CQI and the number of repetitions, the two channel state information, the second device can determine how to report the two channel state information, CQI and the number of repetitions, according to the first information, which can improve the channel state information reporting. Accuracy, which can improve scheduling accuracy and resource utilization.
  • the first message may also carry second information, and the second information is used to trigger the second device to report the channel state information corresponding to the indicated type.
  • the first information and the second information can be carried in one message, so that signaling resources can be saved.
  • the second device may receive a second message sent by the first device, the second message carries second information, and the second information is used to trigger the second device to report channel state information.
  • the above design can improve flexibility by decoupling sending the first information and the second information.
  • the first message may also carry third information, and the third information is used to indicate the bandwidth and/or bandwidth location corresponding to the channel state information.
  • the first information and the third information can be carried in one message, thereby saving signaling resources.
  • the second device may receive a third message sent by the first device, the third message carries third information, and the third information is also used to indicate the bandwidth and/or bandwidth location corresponding to the channel state information.
  • the above design can improve flexibility by decoupling sending the first information and the third information.
  • the third message may also carry second information.
  • the first message is a random access response message media intervention control layer protocol data unit Random Access Response MAC PDU, or the first message is a random access response message media intervention control layer protocol data unit control element Random Access Response MAC CE.
  • the second message and/or the third message may also be Random Access Response MAC PDU, or Random Access Response MAC CE.
  • the first information may be indicated by a subheader of the MAC header field of the first message.
  • the subheader includes the E/T/R/R/BI field
  • the first information can be contained in the first and/or second R field of the subheader, or the first and/or first R field of the subheader.
  • the second R field is used to indicate the first information.
  • the second information can also be indicated by the first and/or second R field of the subheader, or the first and/or second R field of the subheader can be used to indicate the second information .
  • the subheader includes the E/T/RAPID field
  • the first information can be indicated by the RAPID field of the subheader, or the RAPID field of the subheader is used to indicate the first information.
  • the second information may be indicated by the RAPID field of the subheader, or the RAPID field of the subheader may be used to indicate the second information.
  • the first message may be MAC CE or MAC PDU for indication.
  • the second message and/or the third message may also be MAC CE or MAC PDU for indication.
  • the MAC CE and MAC PDU may be sent by the first device to the second device in the connected state.
  • the logical channel identifier LCID field of the subheader of UL-SCH/DL-SCH MAC CE or the subheader of UL-SCH/DL-SCH MAC PDU may be the first value.
  • the UL-SCH/DL-SCH MAC PDU includes the R/F2/E/LCID field, and the first information can be passed through the R/F2/E field of the UL-SCH/DL-SCH MAC PDU At least one field indicates.
  • the first message may be control information.
  • the second message and/or the third message may also be control information.
  • the first information may be indicated by the channel state information request CSI request field of the first message.
  • the multiple channel state information types may include the first type and the second type; or, the multiple channel state information types include the first type, the second type, and the third type; among them, the first type It is a channel quality indicator, the second type is the number of channel repetitions, and the third type is a channel quality indicator and the number of channel repetitions.
  • an embodiment of the present application provides a communication method, including: a first device determines first information, the first information is used to trigger a second device to report channel state information, and/or the first information is used to indicate 2.
  • the content of the channel state information reported by the device includes the type of the channel state information reported by the second device among the multiple channel state information types, or the content of the channel state information includes the first of the multiple channel state information types 2.
  • the second device can determine how to report the two channel state information, CQI and the number of repetitions, according to the first information, which can improve the channel state information reporting. Accuracy, which can improve scheduling accuracy and resource utilization.
  • the first device can also determine the second information, and the second information is used to indicate the content of the channel state information reported by the second device. And send the second information to the second device.
  • the above design can improve flexibility by decoupling sending the first information and the second information.
  • the first device may also determine the third information, and the third information is used to trigger the second device to report the channel state information; The first device sends the third information to the second device.
  • the above design can improve flexibility by decoupling sending the first information and the third information.
  • the first device may also determine the fourth information, which is used for the second Frequency domain information corresponding to the channel state information reported by the device; the first device sends the fourth information to the second device.
  • the above design can improve flexibility by decoupling sending the first information and the fourth information.
  • the frequency domain information corresponding to the channel state information may include at least one of the following information: a frequency domain bandwidth corresponding to the channel state information, and a frequency domain position corresponding to the channel state information.
  • the multiple channel state information types may include the first type and the second type; or, the multiple channel state information types include the first type, the second type, and the third type; among them, the first type Is the channel quality indicator, the second type is the number of repetitions of the first channel, and the third type is the channel quality indicator and the number of repetitions of the first channel.
  • the first message is a random access response message media intervention control layer protocol data unit Random Access Response MAC PDU, or the first message is a random access response message media intervention control layer protocol data unit control element Random Access Response MAC CE.
  • the second message, the third message, or the fourth message may also be Random Access Response MAC PDU, or Random Access Response MAC CE.
  • the first information may be indicated by a subheader of the MAC header field of the first message.
  • the subheader includes E/T/R/R/BI fields, and the first information may be contained in the first and/or second R fields of the subheader.
  • the subheader includes the E/T/RAPID field, and the first information may be indicated by the RAPID field of the subheader.
  • the first message may be MAC CE or MAC PDU for indication.
  • the second message, the third message, or the fourth message may also be MAC CE or MAC PDU for indication.
  • the MAC CE and MAC PDU may be sent by the first device to the second device in the connected state.
  • the logical channel identifier LCID field of the subheader of UL-SCH/DL-SCH MAC CE or the subheader of UL-SCH/DL-SCH MAC PDU may be the first value.
  • the UL-SCH/DL-SCH MAC PDU includes the R/F2/E/LCID field, and the first information can be passed through the R/F2/E field of the UL-SCH/DL-SCH MAC PDU At least one field indicates.
  • the first message may be control information.
  • the second message, the third message, or the fourth message may also be control information.
  • the first information may be indicated by the channel state information request CSI request field of the first message.
  • the multiple channel state information types may include the first type and the second type; or, the multiple channel state information types include the first type, the second type, and the third type; among them, the first type It is the channel quality indicator, the second type is the channel repetition times, and the third type is the channel quality indicator and channel repetition times.
  • an embodiment of the present application provides a communication method, including: a second device receives first information sent by a first device, the first information is used to trigger the second device to report channel state information, and/or the first The information is used to indicate the content of the channel state information reported by the second device; the content of the channel state information includes the type of channel state information reported by the second device among multiple channel state information types, or the content of the channel state information includes multiple channels In the state information type, the type of the channel state information reported by the second device and the frequency domain information corresponding to the channel state information; the second device reports the channel state information according to the first information.
  • the second device can determine how to report the two channel state information, CQI and the number of repetitions, according to the first information, which can improve the channel state information reporting. Accuracy, which can improve scheduling accuracy and resource utilization.
  • the second device may also receive a second message, the second message carries the second information, and the second information is used to indicate to the second device The content of the reported channel state information.
  • the above design can improve flexibility by decoupling sending the first information and the second information.
  • the second device may also receive a third message, the third message carries third information, and the third information is used to trigger The second device reports channel state information.
  • the above design can improve flexibility by decoupling sending the first information and the third information.
  • the second device may also receive a fourth message, which carries the fourth information ,
  • the fourth information is used for frequency domain information corresponding to the channel state information reported by the second device.
  • the frequency domain information corresponding to the channel state information may include at least one of the following information: a frequency domain bandwidth corresponding to the channel state information, and a frequency domain position corresponding to the channel state information.
  • the multiple channel state information types may include the first type and the second type; or, the multiple channel state information types include the first type, the second type, and the third type; among them, the first type Is the channel quality indicator, the second type is the number of repetitions of the first channel, and the third type is the channel quality indicator and the number of repetitions of the first channel.
  • the first message is a random access response message media intervention control layer protocol data unit Random Access Response MAC PDU, or the first message is a random access response message media intervention control layer protocol data unit control element Random Access Response MAC CE.
  • the second message, the third message, or the fourth message may also be Random Access Response MAC PDU, or Random Access Response MAC CE.
  • the first information may be indicated by a subheader of the MAC header field of the first message.
  • the subheader includes E/T/R/R/BI fields, and the first information may be contained in the first and/or second R fields of the subheader.
  • the subheader includes the E/T/RAPID field, and the first information may be indicated by the RAPID field of the subheader.
  • the first message may be MAC CE or MAC PDU for indication.
  • the second message, the third message, or the fourth message may also be MAC CE or MAC PDU for indication.
  • the MAC CE and MAC PDU may be sent by the first device to the second device in the connected state.
  • the logical channel identifier LCID field of the subheader of UL-SCH/DL-SCH MAC CE or the subheader of UL-SCH/DL-SCH MAC PDU may be the first value.
  • the UL-SCH/DL-SCH MAC PDU includes the R/F2/E/LCID field, and the first information can be passed through the R/F2/E field of the UL-SCH/DL-SCH MAC PDU At least one field indicates.
  • the first message may be control information.
  • the second message, the third message, or the fourth message may also be control information.
  • the first information may be indicated by the channel state information request CSI request field of the first message.
  • the multiple channel state information types may include the first type and the second type; or, the multiple channel state information types include the first type, the second type, and the third type; among them, the first type It is the channel quality indicator, the second type is the channel repetition times, and the third type is the channel quality indicator and channel repetition times.
  • this application provides a device, which may be a first device, a second device, or a chip.
  • the device has the function of implementing any one of the embodiments of the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • a device including a processor, a communication interface, and a memory.
  • the communication interface is used to transmit information, and/or messages, and/or data between the device and other devices.
  • the memory is used to store computer-executable instructions.
  • the processor executes the computer-executable instructions stored in the memory, so that the device executes the communication method according to the first aspect or any one of the first aspects.
  • the communication method according to any one of the above second aspect or the second aspect, or the communication method according to any one of the above third aspect or the third aspect, or any one of the above fourth aspect or the fourth aspect The communication method mentioned.
  • this application also provides a system, which includes the first device in any embodiment of the foregoing first aspect and the second device in any embodiment of the foregoing second aspect.
  • the system includes the first device in any embodiment of the foregoing third aspect and the second device in any embodiment of the foregoing fourth aspect.
  • the present application also provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which when run on a computer, cause the computer to execute the methods described in the above aspects.
  • this application also provides a computer program product including instructions, which when run on a computer, causes the computer to execute the methods described in the above aspects.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the application
  • FIG. 2 is a schematic flowchart of a random access channel provided by an embodiment of this application.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of the fields included in the subheader of a MAC header provided by an embodiment of the application;
  • FIG. 5 is a schematic diagram of the fields included in the subheader of another MAC header provided by an embodiment of the application.
  • 6A is a schematic diagram of the fields included in the subheader of a MAC PDU provided by an embodiment of this application;
  • FIG. 6B is a schematic diagram of one DCI scheduling multiple transmission blocks according to an embodiment of the application.
  • FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication method provided in this application can be applied to various communication systems, for example, the Internet of Things (IoT), the narrowband Internet of Things (NB-IoT), and the long term evolution (long term evolution).
  • LTE can also be a fifth-generation (5G) communication system
  • 5G fifth-generation
  • NR 5G new radio
  • GSM global system for mobile communication
  • GSM global system for mobile communication
  • UMTS mobile communication system
  • code division multiple access code division multiple access
  • CDMA code division multiple access
  • the terminal device involved in the embodiments of the present application is a device that provides users with voice and/or data connectivity, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • the terminal device can also be another processing device connected to the wireless modem.
  • the terminal device can communicate with one or more core networks through a radio access network (RAN).
  • Terminal equipment can also be called wireless terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point (access point) , Remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment), etc.
  • the terminal device can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal.
  • a mobile terminal such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal.
  • the terminal device can be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device, which is compatible with wireless The access network exchanges language and/or data.
  • the terminal device can also be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), and other equipment.
  • Common terminal devices include, for example: mobile phones, tablet computers, laptops, handheld computers, mobile internet devices (MID), wearable devices, such as smart watches, smart bracelets, pedometers, etc., but this application is implemented Examples are not limited to this.
  • the network devices involved in the embodiments of the present application can be used to convert received air frames and Internet Protocol (IP) packets to each other, and serve as a router between the terminal device and the rest of the access network, where The rest of the access network can include IP networks and so on.
  • IP Internet Protocol
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment can be a base transceiver station (BTS) in the global system for mobile communication (GSM) or code division multiple access (CDMA), or it can be a broadband code division multiple access.
  • GSM global system for mobile communication
  • CDMA code division multiple access
  • the base station (NodeB) in the address can also be an evolved Node B (e-NodeB, eNB or e-NodeB) in LTE, or a new radio controller (new radio controller, NR controller), it can be the gNode B (gNB) in the 5G system, it can be a centralized unit, it can be a new wireless base station, it can be a remote radio module, it can be a micro base station, it can be a relay ( relay), can be a distributed unit, can be a reception point (transmission reception point, TRP) or transmission point (transmission point, TP) or any other wireless access device, but the embodiment of the application is not limited to this .
  • Network equipment can cover 1 or more cells.
  • a communication system provided by an embodiment of this application includes a network device and six terminal devices, namely UE1 to UE6.
  • UE1 to UE6 can send uplink data to a network device, and the network device can receive uplink data sent by UE1 to UE6.
  • UE4 to UE6 can also form a sub-communication system.
  • the network device can send downlink information to UE1, UE2, UE3, UE5, and UE5 can send downlink information to UE4, UE6 based on the device-to-device (D2D) technology.
  • D2D device-to-device
  • FIG. 1 is only a schematic diagram, and does not specifically limit the type of the communication system, and the number and type of devices included in the communication system.
  • the fourth-generation communication system long term evolution-advanced (LTE-A) will continue to provide wireless communication services for its user equipment (UE) in the short term (or even long term).
  • enhanced machine type communication (eMTC) systems and other evolutionary systems for example, Further eMTC (FeMTC), Even Further eMTC (eFeMTC), additional MTC (AMTC)
  • eMTC enhanced machine type communication
  • FeMTC Further eMTC
  • eFeMTC Even Further eMTC
  • ATC additional MTC
  • the system, eMTC system and other evolved systems work in the LTE system and in the LTE frequency band.
  • the working bandwidth of eMTC terminals may usually be small and smaller than the working bandwidth of the LTE system.
  • the working bandwidth of eMTC terminals may be a narrowband NB, and an NB includes 6 consecutive physical resource blocks (physical resource blocks). , PRB), a PRB includes 12 subcarriers (subcarrier, SC). Due to its low power consumption, long sleep and other characteristics, the battery life of eMTC UE is long, which is expected to reach about 10 years.
  • the UE may be in three states: an idle state, an inactive state (inactive), and a connected state (connected).
  • the connected state UE can communicate with the base station and transmit data through the base station dynamic scheduling, while for the idle state UE, it cannot transmit data through the base station dynamic scheduling. It needs to perform random access first, and then the data can be transmitted after the RRC connection is established. Transmission, or message 3 (MSG3) in the random access process, carries a small amount of uplink data.
  • the inactive state can be regarded as an intermediate state of these two states.
  • the UE and the core network retain the context of the radio resource control (RRC) message in the connected state, so it can be faster than the idle state Enter the connected state.
  • RRC radio resource control
  • the contention-based random access process for idle UEs is as follows:
  • MSG1 The UE sends a message 1 (MSG1) to the base station.
  • MSG1 is the preamble (Random Access Preamble on RACH in uplink).
  • S202 The base station sends a message 2 (MSG2) to the UE.
  • MSG2 message 2
  • MSG2 is the random access response (Radom Access Response) generated by the MAC on the DL-SCH.
  • MSG2 carries a timing advance (TA) adjustment value.
  • the base station will blindly detect the preamble in the physical random access channel (PRACH). If the base station detects the random access preamble (Radom Access Preamble), it will report it to the MAC, and then it will respond in the random access Within the window, the random access response (MSG2) of the MAC is fed back in the downlink shared channel PDSCH.
  • PRACH physical random access channel
  • S203 The UE sends MSG3 to the base station.
  • the UE can obtain uplink synchronization according to the TA adjustment amount in MSG2, and transmit MSG3 in the uplink resources allocated by the base station for subsequent data transmission.
  • MSG3 does not support uploading and downlink channel state information
  • Rel-15 supports early data transmission in MSG3.
  • MSG4 message 4
  • the base station and UE finally complete the contention resolution through MSG4.
  • LTE Rel-16 requires standardized idle state UEs to report downlink channel state quality information.
  • SI system information
  • the base station configures to report channel state information through SI
  • all UEs in the cell will report channel state information after the channel state information report is triggered by SI. This will bring great restrictions to the system. For example, if the system has limited resources, it will not It can be reported, but the UE has already measured the channel at this time, resulting in a waste of UE power.
  • the channel state information of the UE is better, it is not necessary to report the channel state information, but the UE with better channel state information will still report the channel state information under the trigger of the SI, thereby wasting the power of the UE.
  • CQI channel quality indicator
  • CEModeA coverage enhancement level 1
  • the embodiments of the present application provide a communication method and device to solve the problem of how the UE reports the above two channel state information in the prior art.
  • the method and the device are based on the same inventive concept. Because the method and the device have similar principles for solving the problem, the implementation of the device and the method can be referred to each other, and the repetitive parts will not be repeated.
  • FIG. 3 is a flowchart of a communication method provided by this application.
  • the method can be applied to the communication system shown in FIG. 1, and the method includes:
  • the first device determines first information, where the first information is used to indicate a type of channel state information reported by the second device; the type is one of multiple types of channel state information.
  • the first device may be a network device, and the second device may be a terminal device.
  • the second device may be a network device, and the first device may be a terminal device.
  • the first device may be a device with sending capability, and the second device may be a device with receiving capability.
  • the plurality of channel state information types include a first type and a second type; or, the plurality of channel state information types include a first type, a second type, and a third type; wherein, the The first type is the channel quality indicator, the second type is the number of channel repetitions, and the third type is the channel quality indicator and the number of channel repetitions. Further, the number of channel repetitions may refer to the number of channel repetitions of the first channel.
  • the first channel may include a physical downlink data channel, or physical uplink data channel, or physical downlink control channel, or physical uplink control channel, or reference physical downlink data channel, or reference physical uplink data channel, or reference physical downlink control Channel, or refer to the physical uplink control channel, etc.
  • the channel state information type may also be reference signal received quality (RSRQ), or reference signal receiving power (RSRP). Therefore, the channel state information type further includes one or a combination of the following: CQI, the number of repetitions of the first channel, RSRQ, RSRP.
  • the type of channel state information may be used to indicate the type or types of channel state information reported by the second device. Therefore, the types of multiple channel states can be any combination of CQI, the number of repetitions of the first channel, RSRQ, and RSRP, such as the fourth type and the fifth type.
  • the sixth type may be RSRQ
  • the fifth type is the number of repetitions of the first channel and RSRP
  • the sixth type is CQI, RSRQ, RSRP, and so on.
  • the first device sends a first message to the second device, where the first message carries the first information.
  • the second device receives the first message sent by the first device.
  • S303 The second device reports channel state information corresponding to the indicated type according to the first information.
  • the accuracy of channel state information reporting can be improved. , Which can improve scheduling accuracy and improve resource utilization.
  • the first device may also determine second information, and/or third information, the second information is used to trigger (or, can also be understood as indicating) the type corresponding to the type reported by the second device Channel state information.
  • the third information is used to indicate the bandwidth and/or bandwidth location corresponding to the channel state information.
  • bandwidth may mean that the channel state information is broadband or narrowband or subband channel state information, where wideband may refer to the entire system bandwidth or multiple narrowbands.
  • the bandwidth position may refer to a frequency domain position, specifically the frequency domain position or the number (or index) of the frequency domain position where the narrowband or subband (selected by the second device) is located.
  • the first information, the second information, and the third information can be sent in one message, that is, the first device sends the message 1 to the second device, and the message 1 carries the first information, the second information, and the third information. At this time, message 1 can correspond to the first message.
  • the first information, the second information, and the third information can be sent in two messages, that is, the first device sends message 1 and message 2 to the second device respectively, and the message 1 can carry the first information, and the message 2 can carry The second information and the third information.
  • message 1 can correspond to the first message
  • message 2 can correspond to the second message.
  • the message 1 may carry the first information and the second information
  • the message 2 may carry the third information.
  • the message 1 may correspond to the first message
  • the message 2 may correspond to the third message.
  • the message 1 may carry the first information and the third information
  • the message 2 may carry the second information.
  • the message 1 may correspond to the first message
  • the message 2 may correspond to the second message.
  • the first information, the second information, and the third information may be sent in three messages, that is, the first device sends message 1, message 2, and message 3 to the second device, respectively, and the message 1 may carry the first information, and message 2. It can carry second information, and message 3 can carry third information.
  • message 1 can correspond to the first message
  • message 2 can correspond to the second message
  • message 3 can correspond to the third message.
  • the first information and/or third information may also be predefined by the second device, so that when the second device receives the second information, the first information and/or third information may be predefined according to the Report channel status information.
  • the first device may not send the first information.
  • the second device may determine the type of channel state information according to the predefined first information.
  • the first device may not send the third information.
  • the second device may determine the bandwidth and/or bandwidth location corresponding to the channel state information according to the predefined third information.
  • At least one of the first message, the second message, and the third message may be a random access response message media intervention control layer protocol data unit (Random Access Response MAC PDU), or the first message
  • the message is a random access response message media intervention control layer protocol data unit control element (Random Access Response MAC CE).
  • the first message, the second message, and the third message may also be radio resource control (radio resource control, RRC) messages.
  • RRC radio resource control
  • part of the first information, second information, and third information are sent through Random Access Response MAC PDU, and the other part can be sent through RRC messages.
  • the first information is sent through Random Access Response MAC PDU
  • the second information and the third information are sent through RRC messages, and so on. It should be understood that this is only an exemplary description, and which information is used to send the three pieces of information is not specifically limited here.
  • the first type of information is sent through Random Access Response MAC PDU
  • the second type of information is sent through the RRC message
  • the third type of information is predefined.
  • which of the first information, the second information, and the third information specifically corresponds to the first type of information, the second type of information, and the third type of information is not specifically limited here.
  • a part of the first information, the second information, and the third information are sent through an RRC message, and the other part may be predefined.
  • the second information is sent through an RRC message
  • the first information and the third information are predefined, and so on. It should be understood that this is only an exemplary description, and which information is used to send the three pieces of information is not specifically limited here.
  • the following takes the Random Access Response MAC PDU indicating the first information as an example for description.
  • the method for Random Access Response MAC PDU indicating the second information or the third information is similar, and the similarities are not repeated here.
  • the first information may be indicated by a MAC header field (MAC header) of Random Access Response MAC PDU.
  • the first information may be indicated by a subheader (subheader) of the MAC header of Random Access Response MAC PDU.
  • the subheader may be the last subheader in the MAC header of Random Access Response MAC PDU.
  • the subheader may include E/T/R/R/BI fields, as shown in FIG. 4.
  • the first information is contained in the first and/or second R field of the subheader.
  • the specific content of the first information can be indicated by the value status of the first and/or second R field of the subheader. For example, if indicated by a field (the first or second R field of the subheader), A value of 0 in this field can indicate type one, and a value of 1 in this field can indicate type two. If indicated by two fields (the first and second R fields of the subheader), the value of this field can be 00 to indicate type one, and the value of this field can be 01 to indicate type two. A value of 10 in this field indicates type three, and a value of 11 in this field indicates type four. It should be noted that the value of the above field bits and the meaning of the indication are only an example, as long as the used field and the indicated content are the same, they are all protected by this application.
  • the first information and the second information can be combined to indicate.
  • one field such as the first R field of the subheader or the second R field of the subheader
  • the value of this field is 0, it can be used to instruct the user not to send channel state information, and when the value of this field is 0, it can be used to instruct the user to send the first channel state information.
  • the value of this field is 1, it is used to indicate that the user does not send channel state information, and when the value of this field is 1, it is used to instruct the user to send the first channel state information.
  • two fields may also be used to indicate the first information and the second information.
  • the value of these two fields is 00, it can be used to indicate that the user does not send channel state information, and when the value of these two fields is 01, it is used to instruct the user to send the first channel state information.
  • the value is 10
  • the value of these two fields is 11, it is used to instruct the user to send the first channel state information and the second channel state information.
  • the subheader may also include the E/T/RAPID field. As shown in FIG. 5, the first information may be indicated by the RAPID field of the subheader.
  • the PAPID may be the same as the PAPID of the first subheader in the MAC header of Random Access Response MAC PDU.
  • the second device corresponding to all PAPIDs in the MAC header of the Random Access Response MAC PDU can be instructed to report a certain type of channel state information (for example, type 1, indicating that all second devices corresponding to PAPIDs report CQI, etc.).
  • the PAPID when the PAPID is the same as the PAPID of the subheader with index k (also called subheader k), it can instruct the second device corresponding to the PAPID of the subheader with index k to send a certain type of channel state information (for example, type Third, it indicates that the second device corresponding to the PAPID of the subheader with index k sends the CQI and the number of repetitions of the first channel).
  • a certain type of channel state information for example, type Third, it indicates that the second device corresponding to the PAPID of the subheader with index k sends the CQI and the number of repetitions of the first channel.
  • the second devices of the PAPIDs of the multiple subheaders may be instructed to respectively report a certain type of channel state information.
  • the subheader carrying the first information may not have the corresponding media access control (MAC) random access response (RAR) or MAC control element (CE), or the The size of the MAC RAR or MAC CE corresponding to the subheader is fixed at 0 bits.
  • MAC media access control
  • RAR random access response
  • CE MAC control element
  • At least one of the first message, the second message, and the third message may also be an uplink-shared channel (UL-SCH)/downlink-shared channel (downlink-shared channel, DL-SCH) MAC protocol data unit (protocol data unit, PDU), or UL/DL SCH MAC CE, or MAC protocol data unit (protocol data unit, PDU), or MAC CE.
  • UL-SCH uplink-shared channel
  • DL-SCH downlink-shared channel
  • PDU MAC protocol data unit
  • PDU UL/DL SCH
  • MAC CE MAC protocol data unit
  • the first information may be indicated by the subheader of the MAC CE or the subheader of the MAC PDU.
  • the logical channel identifier (lgical channel ID, LCID) field of the subheader of the MAC CE or the subheader of the MAC PDU may be a first value.
  • the first value may be: 10001 or any value from 01011 to 01111.
  • the subheader of the MAC PDU may include the R/F2/E/LCID field.
  • the first information is indicated by at least one field in the R/F2/E field of the MAC PDU.
  • the specific content of the first information can be indicated by the value status of at least one field in the R/F2/E field of the subheader. For example, if it is indicated by a field (the R/F2/E field of the subheader), it can be indicated in this A field value of 0 indicates type one, and a value of 1 indicates type two. If it is indicated by two fields (any two fields in the R/F2/E field of the subheader), the value of this field can be 00 to indicate type 1, and the value of 01 can be used to indicate type 2. A value of 10 in this field indicates type three, and a value of 11 in this field indicates type four.
  • the value of this field can be 000 to indicate type one, and the value of this field can be 011 to indicate type two.
  • a value of 101 in this field indicates type three, and a value of 111 in this field indicates type four.
  • other types can be indicated, which will not be listed here. It should be noted that the value of the above field bits and the meaning of the indication are only an example, as long as the used field and the indicated content are the same, they are all protected by this application.
  • the first information and the second information can be combined to indicate.
  • one field (such as the R/F2/E field of the subheader of the MAC PDU) may be used to indicate the first information and the second information.
  • the value of this field is 0, it can be used to instruct the user not to send channel state information, and when the value of this field is 1, it can be used to instruct the user to send the first channel state information.
  • two fields may also be used to indicate the first information and the second information.
  • the value of these two fields is 00, it can be used to indicate that the user does not send channel state information.
  • the value of these two fields 01, it is used to instruct the user to send the first channel state information.
  • the value of these two fields is 10 It is used to instruct the user to send the second channel state information.
  • the value of these two fields is 11, it is used to instruct the user to send the first channel state information and the second channel state information.
  • three fields can also be used to indicate the first information and the second information.
  • the different value states of the three fields can indicate different channel state information types. Let me illustrate them one by one.
  • At least one of the first message, the second message, and the third message may be control information.
  • the first information is indicated through the first field of the first message.
  • the first field may be a channel state information request (channel state information request, CSI request) field.
  • the second information can also be indicated by the first field.
  • the specific indication manner is similar to the manner in which the first field indicates the first information, and will not be repeated here.
  • the different value states of this field can indicate different channel state information types.
  • the first value state of this field is used to indicate type one (ie CQI)
  • the second value state is used to indicate type two (ie The number of repetitions of the first message).
  • the first value status of this field indicates type 1 or type 2 (that is, it indicates the number of repetitions of CQI or the first information reported by the second device)
  • the second value status indicates type 3 (that is, it indicates that the second device reports CQI and the second device). The number of repetitions for a channel).
  • the value of the above field bits and the meaning of the indication are only an example, as long as the used field and the indicated content are the same, they are all protected by this application.
  • the first field may also indicate that channel state information is not to be reported.
  • the first value status of the first field is used to indicate that the user does not report channel status information or does not contain channel status information.
  • the exemplary first value state may be that all bits have a value of 0.
  • the first information and the second information may be combined to indicate.
  • the first information and the second information can be indicated through different value states of the first field.
  • the first field when the first field is in the first state, it indicates that the user does not send channel state information; when the first field is in the second state, it instructs the user to send type 1 channel state information, and so on.
  • the type of the reported channel state information when the user is instructed to report the channel state information, the type of the reported channel state information may be predefined, or may be indicated through the first field.
  • first information and the third information can also be combined for instructions
  • the third information in the second information field can also be combined for instructions
  • the first information, second information, and third information can also be combined for instructions.
  • the specific indication method is similar to the joint indication method of the first information and the second information. For details, please refer to the related description of the joint indication of the first information and the second information, and the similarities will not be repeated.
  • DCI downlink control information
  • the data channel may be a physical downlink data channel or a physical uplink data channel.
  • one DCI can be used to schedule multiple data channels, or one DCI can schedule multiple transmission blocks. As shown in FIG. 6B, it is a schematic diagram of scheduling multiple transport blocks for one DCI.
  • a transmission interval can be introduced between multiple transmission blocks scheduled by one DCI, which can bring more flexibility to the scheduling of other users.
  • the transmission interval between multiple transmission blocks (TB) can be enabled or disabled.
  • high-level signaling is semi-static and inflexible.
  • the embodiments of the present application provide a communication method to solve the problem of resource waste when one DCI schedules multiple transmission blocks or schedules multiple data channels.
  • the second device receives the fourth information and control information sent by the first device, and the control information carries the fifth information.
  • the second device determines whether to transmit at intervals according to the fourth information and the fifth information.
  • the fourth information is configured by the base station through high-level signaling, and may also be carried by control information.
  • the fourth information is used to enable or disable the transmission interval.
  • the fifth information can be indicated by the first field and/or the second field in the control information, so that the second device can determine whether to determine whether to use the fourth information and the first field and/or the second field in the control information Interval transmission.
  • the fifth information is indicated by the first field, where the first field can be used to indicate the number of scheduled TB blocks.
  • the second device determines the interval transmission; otherwise Continuous transmission.
  • the fifth information is indicated by the second field, where the second field can be the number of repetitions.
  • the second device determines the interval transmission, otherwise continuous transmission, where the number of repetitions can be the data channel repetition
  • the number of times can also be the number of repetitions of the control channel.
  • the fifth information is indicated by the first and second fields, where the first field is the number of scheduled TBs, and the second field is the number of repetitions.
  • the second device determines the interval Transmission, otherwise continuous transmission, where the number of repetitions can be the number of repetitions of the data channel or the number of repetitions of the control channel.
  • hybrid automatic repeat request bundling can also be understood as hybrid automatic repeat request-successful transmission acknowledgement bundling (HARQ-ACK bundling) or spatial bundling (spatial bundling).
  • the first device can indicate sixth information, and the sixth information is used to instruct the second device to perform information transmission on the first resource in a rate matching manner (it can also be a form of information transmission around the first resource). Perform rate matching), or instruct the second device to puncture the first resource.
  • the first resource may be a frequency domain resource of the first system, and the first system may be an LTE system.
  • the second system may be an NR system.
  • N is greater than K
  • the second device can be instructed to transmit information through the second resource (which may be the same as the first resource, or a part of the first resource) in a rate matching manner, or, when N is less than or equal to K, the first The second device punches the first resource.
  • the second device determines the number of repetitions and/or MCS and/or TBS according to the first information.
  • the second device determines at least one of the number of repetitions, the MCS, the TBS, and the maximum number of repetitions according to the seventh information and/or the eighth information.
  • the seventh information is at least one of the configured first repetition times rmax1, the first MCS, and TBS m1
  • the eighth information is at least one of the configured second repetition times rmax2, the first parameter p, and the configured second MCS and TBS m1.
  • the eighth information includes the first parameter p
  • the final number of repetitions can be determined to be rmax1*p
  • the eighth information includes rmax2
  • the number of repetitions can be the number of data channel repetitions or the number of control channel repetitions.
  • the final number of repetitions can be considered as the maximum number of repetitions.
  • the first channel includes the first resource, and the terminal device performs rate matching around the first resource.
  • the second channel includes the first resource, and the terminal device punctures the first resource, or determines puncturing or rate-matching according to the first information.
  • the first channel can be a physical downlink/uplink shared channel
  • the second channel can be a physical downlink/uplink control channel (machine type communication) physical downlink/uplink control channel).
  • the embodiment of the present application provides a communication device.
  • the structure of the communication device may be as shown in FIG. 7 and includes a processing unit 701 and a transceiver unit 702.
  • the communication device may be specifically used to implement the method executed by the first device in the embodiments shown in Figs. 3 to 6A.
  • the device may be the first device itself or a chip in the first device. Or a part of the chipset or chip used to perform related method functions.
  • the processing unit 701 is configured to determine first information, and the first information is used for the type of the channel state information reported by the second device among the multiple types of channel state information.
  • the transceiver unit 702 is configured to send a first message to the second device, where the first message carries the first information.
  • the first message may also carry second information, and the second information is used to trigger the second device to report channel state information.
  • the transceiver unit 702 is further configured to send a second message to the second device, where the second message carries second information, and the second information is used to trigger the second device to report channel state information.
  • the first message may further carry third information, and the third information is also used to indicate the bandwidth and/or bandwidth location corresponding to the channel state information.
  • the transceiver unit 702 is further configured to send a third message to the second device, where the third message carries third information, and the third information is also used to indicate the bandwidth and/or corresponding to the channel state information Bandwidth position.
  • the first message may be a random access response message MAC PDU, or the first message may be a random access response message MAC CE.
  • the first information may be indicated by a subheader of the MAC header field of the first message.
  • the subheader includes an E/T/R/R/BI field, and the first information may be included in the first and/or second R field of the subheader.
  • the subheader includes an E/T/RAPID field, and the first information is indicated by the RAPID field of the subheader.
  • the first message may be MAC CE or MAC PDU for indication.
  • the logical channel identifier LCID field of the subheader of the MAC CE or the subheader of the MAC PDU may be a first value.
  • the MAC PDU includes an R/F2/E/LCID field, and the first information may be indicated by at least one field in the R/F2/E field of the MAC PDU.
  • the first message may be control information.
  • the first information may be indicated by the channel state information request CSI request field of the first message.
  • the plurality of channel state information types include a first type and a second type; or, the plurality of channel state information types include a first type, a second type, and a third type; wherein, the first type The type is the channel quality indicator, the second type is the number of repetitions of the first channel, and the third type is the channel quality indicator and the number of repetitions of the first channel.
  • the communication device may be specifically used to implement the method executed by the second device in the embodiments of FIGS. 3 to 6A, and the device may be the second device itself, or the device in the second device. Chip or chipset or part of the chip used to perform related method functions.
  • the transceiving unit 702 is configured to receive first information sent by a first device, where the first information is used for the type of the channel state information reported by the second device among the multiple types of channel state information.
  • the processing unit 701 is configured to report channel state information according to the first information.
  • the first message may also carry second information, and the second information is used to trigger the second device to report channel state information.
  • the transceiver unit 702 is further configured to receive a second message sent by the first device, where the second message carries second information, and the second information is used to trigger the second device to report channel state information.
  • the first message may further carry third information, and the third information is also used to indicate the bandwidth and/or bandwidth location corresponding to the channel state information.
  • the transceiver unit 702 is further configured to receive a third message sent by the first device, where the third message carries third information, and the third information is also used to indicate the bandwidth and/or corresponding to the channel state information Or bandwidth position.
  • the first message may be a random access response message MAC PDU, or the first message may be a random access response message MAC CE.
  • the first information may be indicated by a subheader of the MAC header field of the first message.
  • the subheader includes an E/T/R/R/BI field, and the first information may be included in the first and/or second R field of the subheader.
  • the subheader includes an E/T/RAPID field, and the first information is indicated by the RAPID field of the subheader.
  • the first message may be MAC CE or MAC PDU for indication.
  • the logical channel identifier LCID field of the subheader of the MAC CE or the subheader of the MAC PDU may be a first value.
  • the MAC PDU includes an R/F2/E/LCID field, and the first information may be indicated by at least one field in the R/F2/E field of the MAC PDU.
  • the first message may be control information.
  • the first information may be indicated by the channel state information request CSI request field of the first message.
  • the plurality of channel state information types include a first type and a second type; or, the plurality of channel state information types include a first type, a second type, and a third type; wherein, the first type The type is the channel quality indicator, the second type is the number of repetitions of the first channel, and the third type is the channel quality indicator and the number of repetitions of the first channel.
  • the division of modules in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods.
  • the functional modules in the various embodiments of the present application may be integrated into one process. In the device, it can also exist alone physically, or two or more modules can be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the communication device may be as shown in FIG. 8, and the processing unit 701 may be the processor 802.
  • the processor 802 may be a central processing unit (CPU), or a digital processing module, and so on.
  • the transceiver unit 702 may be a communication interface 801, and the communication interface 801 may be a transceiver, an interface circuit such as a transceiver circuit, etc., or a transceiver chip or the like.
  • the network device further includes: a memory 803, configured to store a program executed by the processor 801.
  • the memory 803 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., and may also be a volatile memory, such as random access memory (random access memory). -access memory, RAM).
  • the memory 803 is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the processor 802 is configured to execute the program code stored in the memory 803, and is specifically configured to execute the actions of the aforementioned processing unit 701, which will not be repeated in this application.
  • the embodiment of the present application does not limit the specific connection medium between the communication interface 801, the processor 802, and the memory 803.
  • the memory 803, the processor 802, and the communication interface 801 are connected by a bus 804 in FIG. 8.
  • the bus is represented by a thick line in FIG. 8.
  • the connection mode between other components is only for schematic illustration. , Is not limited.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in FIG. 8 to represent, but it does not mean that there is only one bus or one type of bus.
  • the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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Abstract

L'invention concerne un procédé et un dispositif de communication, utilisés pour résoudre le problème de la manière dont l'UE rapporte des CQI et des temps de répétition de canal de commande. Le procédé consiste : à déterminer, par un premier dispositif, des premières informations, les premières informations étant utilisées pour indiquer le type d'informations d'état de canal rapportées par un second dispositif parmi de multiples types d'informations d'état de canal ; et à envoyer, par le premier dispositif, un premier message au second dispositif, le premier message transportant les premières informations.
PCT/CN2019/085376 2019-04-30 2019-04-30 Procédé et dispositif de communication WO2020220351A1 (fr)

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