WO2019096257A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2019096257A1
WO2019096257A1 PCT/CN2018/115936 CN2018115936W WO2019096257A1 WO 2019096257 A1 WO2019096257 A1 WO 2019096257A1 CN 2018115936 W CN2018115936 W CN 2018115936W WO 2019096257 A1 WO2019096257 A1 WO 2019096257A1
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WIPO (PCT)
Prior art keywords
uplink carrier
threshold
terminal
downlink signal
signal quality
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/115936
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English (en)
Chinese (zh)
Inventor
耿婷婷
张宏平
曾清海
严乐
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Publication of WO2019096257A1 publication Critical patent/WO2019096257A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.
  • the high frequency spectrum includes a centimeter wave frequency band and a millimeter wave frequency band;
  • the centimeter wave frequency band generally refers to a frequency spectrum in the range of 3 GHz to 30 GHz, and the millimeter wave
  • the frequency band usually refers to the spectrum in the range of 30 GHz to 300 GHz.
  • the uplink (UL) power of the terminal is generally smaller than the downlink (DL) power of the base station, so there may be cases where the UL carrier coverage is smaller than the DL carrier coverage, in order to maintain the coverage of the UL carrier and the DL carrier coverage.
  • a low frequency supplementary uplink (SUL) carrier is introduced, wherein the frequency of the SUL carrier is smaller than the frequency of the NR UL carrier.
  • one cell includes at least one new radio (NR) UL carrier. And a SUL carrier.
  • NR new radio
  • the terminal may select to access the NR UL carrier or access the SUL carrier during initial access, but has not proposed how the terminal performs uplink carrier switching.
  • the terminal cannot perform uplink carrier switching, and the uplink data transmission interruption of the terminal may occur.
  • the present application provides a communication method and apparatus, which can solve the problem of interruption of uplink data transmission due to inability to perform uplink carrier switching.
  • an embodiment of the present application provides a communication method, which may be implemented by a terminal or a chip applicable to a terminal, where the method includes: receiving configuration information from a network device, where the configuration information includes a quality for triggering uplink carrier switching. The threshold is then determined according to the downlink signal quality and the quality threshold used to trigger the uplink carrier handover to determine whether the uplink carrier handover trigger condition is met.
  • the uplink carrier of the terminal is a carrier that can be used for carrying uplink signaling or data transmission of the terminal.
  • the uplink carrier may include a first uplink carrier and a second uplink carrier.
  • the frequency of the first uplink carrier is greater than the frequency of the second uplink carrier.
  • the first uplink carrier may be an NR UL carrier
  • the second uplink carrier may be a SUL carrier.
  • the uplink carrier switching trigger condition is a condition for triggering the terminal to start the uplink carrier switching procedure.
  • the terminal can receive the quality threshold for triggering the uplink carrier handover from the network device, and the terminal determines whether the uplink carrier switching trigger condition is met according to the downlink signal quality and the quality threshold for triggering the uplink carrier handover, that is, the implementation of the present application.
  • the example shows an uplink carrier triggering condition for triggering the terminal to perform uplink carrier switching, so that the terminal can know how to implement uplink carrier switching. It can be understood that if the uplink carrier trigger condition is met, the terminal can perform uplink carrier switching, which can avoid the problem of uplink data transmission interruption caused by the inability to perform uplink carrier switching.
  • the first message may be sent to the network device
  • the first message includes a first measurement report, where the first measurement report includes a downlink signal quality, or the first message includes first indication information, where the first indication information is used to indicate that the downlink signal quality meets an uplink carrier switching trigger condition.
  • the first indication information is used to indicate that the downlink signal quality satisfies the uplink carrier handover triggering condition.
  • the first indication information may be used to notify the network device that the downlink signal quality meets the uplink carrier handover triggering condition, and then request the network device to perform carrier switching.
  • the first indication information may be used to notify the network device terminal that the uplink carrier handover is completed.
  • the first indication information and the downlink signal quality may be included in the first message.
  • the network device may control the terminal to perform carrier switching according to the first indication information, or may further determine whether the downlink signal quality in the first message satisfies an uplink carrier handover trigger condition. If yes, the control terminal performs uplink carrier switching.
  • the terminal can perform the uplink frequency point switching autonomously and send the first indication information to the network device, or the terminal sends the measurement report or the first indication information to the network device by the network.
  • the device control terminal completes the uplink frequency point switching to avoid interruption of the uplink data transmission of the terminal.
  • the quality threshold for triggering the uplink carrier switching includes a first threshold, and determining whether the uplink carrier switching trigger condition is met according to the downlink signal quality and the quality threshold for triggering the uplink carrier switching, which may be implemented as follows: If the uplink carrier of the terminal is the first uplink carrier, and the downlink signal quality is less than the first threshold, determining that the downlink signal quality meets the uplink carrier switching trigger condition.
  • the first uplink carrier may be an NR UL carrier.
  • the configuration information may include a first threshold corresponding to each type of downlink signal quality.
  • the terminal determines that the uplink carrier switching trigger condition is met, or when all types of downlink signal quality are smaller than the corresponding first gates. After the time limit, the terminal determines that the uplink carrier switching trigger condition is met.
  • the configuration information includes an RSRP threshold and an RSRQ threshold.
  • the RSRP is smaller than the RSRP threshold, or the RSRQ is less than the RSRQ threshold, or the RSRP is less than the RSRP threshold and the RSRQ is less than the RSRQ threshold.
  • the configuration information may further include at least one of a hysteresis parameter and a trigger time.
  • the downlink signal quality obtained based on the terminal measurement may be represented by Ms, and the hysteresis parameter is represented by Hys. If the duration of Ms+Hys is less than the first threshold reaches the triggering time, it may be determined that the uplink carrier switching trigger condition is satisfied.
  • the terminal determines whether the uplink carrier switching trigger condition is met based on the downlink signal quality obtained by the terminal measurement, and the hysteresis parameter and/or the trigger time, and can avoid the situation that the terminal has the ping-pong switching between the uplink carriers.
  • the terminal may receive information from the network device for instructing the terminal to switch from the first uplink carrier to the second uplink carrier, and then switch from the first uplink carrier to the second uplink carrier.
  • the second uplink carrier may be a SUL carrier.
  • the uplink carrier can be switched from the NR UL carrier to the SUL carrier, thereby implementing uplink carrier switching during terminal mobility. Avoid the problem that the terminal is interrupted by the uplink data transmission due to the inability to perform carrier switching.
  • the quality threshold for triggering the uplink carrier switching includes a first threshold; determining, according to the downlink signal quality and the quality threshold for triggering the uplink carrier switching, that the uplink carrier switching trigger condition is met, specifically: The uplink carrier of the terminal is the second uplink carrier, and the downlink signal quality is greater than the first threshold, and determining that the downlink signal quality meets the uplink carrier switching trigger condition.
  • the configuration information may include a first threshold corresponding to each type of downlink signal quality.
  • the terminal determines that the uplink carrier switching trigger condition is met. Or, when all types of downlink signal quality are greater than the corresponding first threshold, the terminal determines that the uplink carrier switching trigger condition is met.
  • the configuration information includes the RSRP threshold and the RSRQ threshold.
  • the RSRP is greater than the RSRP threshold and the RSRQ is greater than the RSRQ threshold, the downlink signal quality can be determined to satisfy the uplink carrier switching condition.
  • the configuration information may further include at least one of a hysteresis parameter and a trigger time.
  • the downlink signal quality obtained based on the terminal measurement may be represented by Ms, and the hysteresis parameter is represented by Hys. If the duration of the Ms-Hys greater than the first threshold reaches the triggering time, it may be determined that the uplink carrier switching trigger condition is satisfied.
  • the terminal determines whether the uplink carrier switching trigger condition is met based on the downlink signal quality obtained by the terminal measurement, and the hysteresis parameter and/or the trigger time, and can avoid the situation that the terminal has the ping-pong switching between the uplink carriers.
  • the terminal may receive information from the network device for instructing the terminal to switch from the second uplink carrier to the first uplink carrier, and then switch from the second uplink carrier to the first uplink carrier.
  • the uplink carrier can be switched from the SUL carrier to the NR UL carrier, thereby implementing uplink carrier switching during terminal movement, which can avoid the terminal being unable to The problem of interruption of uplink data transmission caused by carrier switching.
  • the frequency of the first uplink carrier of the terminal is greater than the frequency of the second uplink carrier.
  • the configuration information further includes a second threshold, where the second threshold is smaller than the first threshold; if the terminal determines that the downlink signal quality is less than the second threshold, the second message may be sent to the network device, where the second message includes
  • the second measurement report includes: the second measurement report includes the downlink signal quality, or the second message includes the second indication information, where the second indication information is used to indicate that the downlink signal quality is less than the second threshold.
  • the second message is used to trigger the network device to configure the terminal to perform at least one of downlink intra-frequency measurement, inter-frequency measurement, or inter-system measurement.
  • the terminal can report the cell information of the target cell with good quality of service to the network device, and the network device switches the terminal to the target cell.
  • the configuration information further includes a threshold offset value. If the terminal determines that the downlink signal quality is less than the third threshold, the second message may be sent to the network device, where the third threshold is based on the first threshold and the threshold offset value. Determining that the third threshold is smaller than the first threshold; wherein the second message includes a second measurement report, where the second measurement report includes downlink signal quality; or the second message includes second indication information, where the second indication information is used to indicate the downlink The signal quality is less than the third threshold.
  • the second message is used to trigger the network device to configure the terminal to perform at least one of downlink intra-frequency measurement, inter-frequency measurement, or inter-system measurement.
  • the terminal can report the cell information of the target cell with good quality of service to the network device, and the network device switches the terminal to the target cell.
  • an embodiment of the present application provides a communication method, which may be implemented by a network device or a chip that can be used for a network device, where the method includes: sending configuration information to a terminal, where the configuration information includes triggering uplink carrier switching. a quality threshold, and then receiving a first message from the terminal; wherein the first message includes a first measurement report, the first measurement report is used to indicate downlink signal quality, or the first message includes first indication information, where the first indication information is used Indicates that the downlink signal quality satisfies the uplink carrier switching trigger condition.
  • the uplink carrier is a carrier that can be used for carrying uplink signaling or data transmission of the terminal.
  • the uplink carrier may include a first uplink carrier and a second uplink carrier.
  • the frequency of the first uplink carrier is greater than the frequency of the second uplink carrier.
  • the first uplink carrier may be an NR UL carrier
  • the second uplink carrier may be a SUL carrier.
  • the uplink carrier switching trigger condition is a condition for triggering the terminal to start the uplink carrier switching procedure.
  • the first message includes a first measurement report, where the first measurement report includes a downlink signal quality, or the first message includes first indication information, where the first indication information is used to indicate that the downlink signal quality meets an uplink carrier switching trigger condition.
  • the first indication information is used to indicate that the downlink signal quality satisfies the uplink carrier handover triggering condition.
  • the first indication information may be used to notify the network device that the downlink signal quality meets the uplink carrier handover triggering condition, and then request the network device to perform carrier switching.
  • the first indication information may be used to notify the network device terminal that the uplink carrier handover is completed.
  • the first indication information and the downlink signal quality may be included in the first message.
  • the network device may control the terminal to perform carrier switching according to the first indication information, or may further determine whether the downlink signal quality in the first message satisfies an uplink carrier handover trigger condition. If yes, the control terminal performs uplink carrier switching.
  • the network device can send a quality threshold for triggering the uplink carrier handover to the terminal, and the terminal determines whether the uplink carrier handover trigger condition is met according to the downlink signal quality and the quality threshold for triggering the uplink carrier handover, that is, the implementation of the present application.
  • the example provides an uplink carrier triggering condition for triggering the terminal to perform uplink carrier switching, so that the terminal can know how to implement uplink carrier switching. It can be understood that if the uplink carrier triggering condition is met, the terminal can perform uplink carrier switching, which can be avoided. The problem of interruption of uplink data transmission due to the inability to perform uplink carrier switching.
  • the quality threshold for triggering uplink carrier switching includes a first threshold; after receiving the first message from the terminal, the method further includes: sending, to the terminal, the terminal to switch from the first uplink carrier to Information of the second uplink carrier; or transmitting, to the terminal, information indicating that the terminal switches from the second uplink carrier to the first uplink carrier.
  • the uplink carrier when the terminal moves from the center of the coverage of the NR carrier to the coverage edge of the NR UL carrier, the uplink carrier can be switched from the NR UL carrier to the SUL carrier according to the information transmitted by the network device.
  • the uplink carrier may be switched from the SUL carrier to the NR UL carrier. The uplink carrier switching in the process of terminal movement is realized, which can avoid the problem that the uplink data transmission is interrupted due to the inability of the terminal to switch.
  • the frequency of the first uplink carrier is greater than the frequency of the second uplink carrier.
  • the configuration information further includes a second threshold, where the second threshold is smaller than the first threshold; the network side device may receive the second message from the terminal; wherein the second message includes the second measurement report, the second measurement report For indicating the downlink signal quality, the second message includes the second indication information, where the second indication information is used to indicate that the downlink signal quality is less than the second threshold.
  • the second message is used to trigger the network device to configure the terminal to perform at least one of downlink intra-frequency measurement, inter-frequency measurement, or inter-system measurement.
  • the terminal can report the cell information of the target cell with good quality of service to the network device, and the network device switches the terminal to the target cell.
  • the configuration information further includes a threshold offset value: the network device can receive the second message from the terminal;
  • the second message includes a second measurement report, where the second measurement report is used to indicate the downlink signal quality, or the second message includes the second indication information, where the second indication information is used to indicate that the downlink signal quality is less than the third threshold, and the third The threshold is determined according to the first threshold and the threshold offset value, and the third threshold is less than the first threshold.
  • the second message is used to trigger the network device to configure the terminal to perform at least one of downlink intra-frequency measurement, inter-frequency measurement, or inter-system measurement.
  • the terminal can report the cell information of the target cell with good quality of service to the network device, and the network device switches the terminal to the target cell.
  • an embodiment of the present application provides a communication method, which may be implemented by a terminal or a chip that can be used for a terminal, and the method includes: receiving configuration information sent by a network device, when the transmission power margin and transmission according to the terminal When the power headroom threshold is determined to satisfy the uplink frequency point handover trigger condition, the trigger generation power headroom report is triggered.
  • the configuration information includes a power headroom threshold, and the power headroom threshold is used to trigger a generated power headroom report, where the power headroom refers to the remaining uplink transmission power available to the terminal.
  • the power headroom report includes the power headroom.
  • the embodiment of the present application provides a new method for triggering the generation of a power headroom report.
  • the power headroom report may be triggered in time to generate power surplus in the terminal.
  • the network device can perform corresponding processing according to the power headroom report in time, such as carrier switching, cell switching, etc., to improve the service quality of the terminal.
  • a power headroom report may be sent to the network device, and the power headroom report is used to trigger the uplink carrier switch.
  • the uplink frequency switching triggering condition is determined according to the power headroom of the terminal and the power headroom threshold, which may be implemented as follows: if the uplink frequency point of the terminal is the first uplink frequency point, and the power is The remaining amount is less than the power margin threshold, and the power headroom is determined to satisfy the uplink frequency point switching trigger condition.
  • the terminal may receive a third message from the network device, where the third message is used to instruct the terminal to switch from the first uplink frequency point to the second uplink frequency point, and then the first uplink frequency point according to the third message. Switch to the second upstream frequency point.
  • determining, according to the power headroom of the terminal and the power headroom threshold, that the uplink frequency point switching trigger condition is met specifically, if the uplink frequency point of the terminal is the second uplink frequency point, the power is The remaining amount is greater than the power margin threshold, and the power headroom is determined to satisfy the uplink frequency point switching trigger condition.
  • the terminal may receive a third message from the network device, where the third message is used to indicate that the terminal switches from the second uplink frequency point to the first uplink frequency point, and then the second uplink frequency point according to the second message. Switch to the first upstream frequency point.
  • an embodiment of the present application provides a communication method, which may be implemented by a network device or a chip applicable to a network device, where the method includes: sending configuration information to a terminal, and then receiving a power headroom report from the terminal, where The configuration information includes a power headroom threshold, and the power headroom threshold is used to trigger a generated power headroom report, and the power headroom refers to the remaining uplink transmission power available to the terminal.
  • the power headroom report includes the power headroom.
  • the embodiment of the present application provides a new method for triggering the generation of a power headroom report.
  • the power headroom report may be triggered in time to generate power surplus in the terminal.
  • the network device can perform corresponding processing according to the power headroom report in time, such as carrier switching, cell switching, etc., to improve the service quality of the terminal.
  • the network device may send a third message to the terminal; the third message is used to indicate that the terminal is switched from the first uplink frequency point to the second uplink frequency point; or The third message is used to indicate that the terminal is switched from the first uplink frequency point to the second uplink frequency point.
  • an embodiment of the present application provides a communication device, which has the function of implementing the method described in the foregoing first aspect and/or third aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the device can be a terminal or can be a chip in the terminal.
  • the device is a terminal
  • the terminal includes a processor configured to support the terminal to perform a corresponding function in the above method.
  • the terminal may further include a transmitter and a receiver for supporting communication between the terminal and the network side device.
  • the terminal may further include a memory for coupling with the processor, which stores program instructions and data necessary for the terminal.
  • the embodiment of the present application provides a communication device, which has the function of implementing the method described in the second aspect and/or the fourth aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the device can be a base station or can be a chip in a base station.
  • the device is a network device, and the network device includes a processor configured to support the network device to perform a corresponding function in the above method. Further, the network device may further include a transmitter and a receiver for supporting communication between the network device and the terminal. Further, the network device can also include a memory for coupling with the processor that holds program instructions and data necessary for the network device.
  • the embodiment of the present application provides a communication system, where the system includes the terminal and the network device in the foregoing aspect.
  • an embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the method described in the first aspect above.
  • the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions, when executed on a computer, causing the computer to execute the method described in the second aspect above.
  • an embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the method described in the third aspect above.
  • an embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the method described in the fourth aspect above.
  • an embodiment of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.
  • an embodiment of the present application provides a computer program product comprising instructions which, when executed on a computer, cause the computer to perform the method of the second aspect described above.
  • an embodiment of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the third aspect described above.
  • an embodiment of the present application provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method of the fourth aspect described above.
  • an embodiment of the present application provides a chip system for use in a terminal, the chip system including at least one processor, a memory and an interface circuit, the memory, the transceiver, and the at least one processing
  • the apparatus is interconnected by a line in which instructions are stored; the instructions are executed by the processor to perform the method of the first aspect and/or the third aspect described above.
  • an embodiment of the present application provides a chip system for use in a network device, the chip system including at least one processor, a memory and an interface circuit, the memory, the transceiver, and the at least one
  • the processor is interconnected by a line, the at least one memory storing instructions; the instructions being executed by the processor to perform the method of the second aspect and/or the fourth aspect described above.
  • the terminal may receive a quality threshold for triggering the uplink carrier handover from the network device, and the terminal determines, according to the downlink signal quality and the quality threshold for triggering the uplink carrier handover, whether the uplink carrier switching trigger condition is met, that is,
  • the embodiment of the present application provides an uplink carrier triggering condition for triggering the terminal to perform uplink carrier switching, so that the terminal can know how to perform uplink carrier switching. It can be understood that if the uplink carrier trigger condition is met, the terminal can perform uplink carrier switching. The problem of interruption of uplink data transmission due to the inability to perform uplink carrier switching can be avoided.
  • FIG. 1 is an exemplary schematic diagram of an uplink carrier coverage range according to an embodiment of the present application
  • FIG. 2a is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • 2b is a schematic structural diagram of a base station according to an embodiment of the present application.
  • FIG. 3 is a flowchart of a communication method according to an embodiment of the present application.
  • FIG. 5 is an exemplary schematic diagram of a method for uplink carrier switching according to an embodiment of the present application.
  • FIG. 6 is a flowchart of another communication method according to an embodiment of the present application.
  • FIG. 7 is a flowchart of another communication method according to an embodiment of the present application.
  • FIG. 8 is a flowchart of another communication method according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of another apparatus according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • Embodiments of the present application are applied to NR and subsequent evolution systems.
  • FIG. 2a shows a schematic diagram of a possible communication system of the present application, which may include at least one network device 10 (only one is shown) and one capable of communicating with the network device 10. Or a plurality of terminals 20.
  • the network device as referred to in the present application is a device deployed in the radio access network to provide a wireless communication function for the terminal.
  • the network device referred to in the present application includes but is not limited to: various forms of macro base stations, and micro Base station (also referred to as a small station), a relay station, a Transmission Reception Point (TRP), a next-generation network node (g Node B, gNB), and an evolved Node B (ng evolved Node B) connected to the next-generation core network.
  • the ng-eNB), etc. may also include a wireless access network device of a non-Third Generation Partnership Project (3GPP) system such as a wireless local area network (WLAN) access device.
  • 3GPP non-Third Generation Partnership Project
  • WLAN wireless local area network
  • the names of wireless access network devices with similar wireless communication capabilities may vary.
  • the foregoing devices that can provide wireless communication functions for terminals are collectively referred to as network devices.
  • the terminal referred to in the present application is a device with wireless transceiver function, which can be deployed on land, indoors or outdoors, hand-held or on-board; it can also be deployed on the water surface (such as a ship); it can also be deployed in the air ( Such as airplanes, balloons and satellites, etc.).
  • the terminal may include various types of mobile phones, tablets, computers with wireless transceiver functions, wireless data cards, virtual reality (VR) terminal devices, and augmented reality (AR).
  • Terminal equipment terminal equipment of machine type communication (MTC), terminal equipment in industrial control, terminal equipment in self driving, terminal equipment in remote medical , terminal equipment in the smart grid, terminal equipment in transport safety, terminal equipment in smart city, and wearable devices (such as smart watches, smart bracelets, pedometers) wait wait wait.
  • MTC machine type communication
  • terminal equipment in industrial control terminal equipment in self driving
  • terminal equipment in remote medical terminal equipment in the smart grid
  • terminal equipment in transport safety terminal equipment in smart city
  • wearable devices such as smart watches, smart bracelets, pedometers
  • the devices having the wireless communication function are collectively referred to as terminals. .
  • the network device of the present application may include a base station.
  • the base station may be composed of a centralized unit (CU) and a distributed unit (DU), and one CU may be connected to one DU, or may be multiple DUs. Sharing a single CU saves costs and makes network expansion easy.
  • the severing of CU and DU can be divided according to the protocol stack.
  • One possible way is to use radio resource control (RRC), Service Data Adaptation Protocol (SDAP) and packet data convergence protocol.
  • RRC radio resource control
  • SDAP Service Data Adaptation Protocol
  • PDCP packet data convergence protocol
  • the (packet data convergence protocol, PDCP) layer is deployed in the CU, and the remaining radio link control (RLC) layer, medium access control (MAC) layer, and physical layer (PHY layer) are deployed.
  • RLC radio link control
  • MAC medium access control
  • PHY layer physical layer
  • the foregoing protocol stack splitting manner is not completely limited, and other splitting manners may also be used.
  • the network device is, for example, the architecture of the CU and the DU of FIG. 2b
  • the embodiment of the present application may refer to a CU, or may be a DU, or a system composed of a CU and a DU, depending on the corresponding Implementation of the feature.
  • the base station mentioned in the embodiment of the present application is not limited to the form of FIG. 2b, and may be any device that provides deployment in the radio access network to provide wireless communication functions for the terminal.
  • the uplink carrier which may also be an uplink frequency point, is a carrier used to support the terminal for uplink data or signaling transmission.
  • the uplink carrier may include an NR UL carrier and/or a SUL carrier depending on the frequency.
  • an uplink carrier with a high frequency is referred to as a first uplink carrier
  • an uplink carrier with a low frequency is referred to as a second uplink carrier.
  • the first uplink carrier may be an NR UL carrier
  • the second uplink carrier may be a SUL carrier
  • the SUL carrier may be a low frequency carrier
  • the NR UL may be a high frequency carrier.
  • the frequency of the SUL carrier is 900 MHz
  • the frequency of the NR UL carrier is 3.5 GHz.
  • first uplink carrier, the second uplink carrier, the NR UL carrier, and the SUL carrier in the embodiments of the present application may also be referred to as a first uplink carrier, a second uplink carrier, an NR UL carrier, and a SUL carrier, respectively.
  • the frequency of the first uplink carrier is lower than the frequency of the second uplink carrier.
  • the first uplink carrier in the embodiment of the present application may be an NR UL carrier, and the second uplink carrier may be a SUL carrier.
  • FIG. 1 is an exemplary schematic diagram of the coverage of the NR UL carrier and the SUL carrier, and the area of the shaded portion is NR.
  • the coverage of the UL carrier, the coverage of the SUL carrier includes the coverage of the NR UL carrier.
  • the coverage of a DL carrier may be the same as the coverage of a SUL carrier.
  • Embodiments of the present application may be specifically applied to a scenario in which one cell includes one DL carrier and at least two UL carriers.
  • the frequencies of different uplink carriers are different.
  • the NR UL carrier is a carrier with a higher frequency
  • the SUL carrier is a carrier having a lower frequency than the NR UL carrier.
  • the at least two UL carriers may include one UL carrier and one SUL carrier.
  • the NR UL carrier may specifically be a high frequency carrier, but is not limited to the NR UL carrier must be a high frequency.
  • a cell including an NR UL carrier, a SUL carrier, and a DL carrier is taken as an example for description.
  • the frequency of the SUL carrier is less than the frequency of the NR UL carrier, but the application does not limit this. It can be understood that the communication method of the embodiment of the present application can be applied to any cell including at least two uplink carriers.
  • an embodiment of the present application provides a communication method. As shown in FIG. 3 , the method includes:
  • Step 301 The network device sends configuration information to the terminal.
  • the terminal receives configuration information from the network device.
  • the configuration information includes a quality threshold for triggering uplink carrier switching.
  • the configuration information can be generated by the network device and sent to the terminal.
  • the uplink carrier of the terminal is an NR UL carrier
  • the downlink signal quality obtained by the terminal is smaller than the first threshold
  • the uplink carrier of the terminal may be triggered to switch from the NR UL carrier to the SUL carrier
  • the uplink carrier of the terminal is a SUL carrier
  • the handover of the uplink carrier of the terminal from the SUL carrier to the NR UL carrier may be triggered.
  • the carrier that can be used for carrying uplink signaling or data transmission of the terminal is the uplink carrier of the terminal.
  • the downlink signal quality includes reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), signal to noise ratio (SNR), and signal to interference plus noise ratio ( Signal to Interference plus Noise Ratio (SINR), at least one of a reference signal strength indication (RSSI) or other signal quality.
  • the downlink signal quality may be cell level, beam level, numerology level, slicing level, or part bandwidth (BWP) level.
  • the downlink signal quality may be measured by using a downlink synchronization channel, a channel-state information reference signal (CSI-RS), a demodulation reference signal (DMRS), and a cell-specific reference signal (cell-specific reference signal). At least one of a CRS) signal or other downstream signal is obtained.
  • the downlink signal quality reference threshold may include at least one of an RSRP threshold, an RSRQ threshold, an SNR threshold, an SINR threshold, an RSSI threshold, or other quality threshold.
  • Step 302 When the terminal determines that the uplink carrier switching trigger condition is met according to the downlink signal quality and the quality threshold for triggering the uplink carrier handover, the terminal sends the first message to the network device.
  • the network device receives the first message from the terminal.
  • the first message may be a measurement report message, or other RRC message, or a layer 1 (layer 1) message, or a layer 2 (layer 2) message.
  • the terminal can determine whether the uplink carrier trigger condition is met according to the downlink signal quality and the quality threshold for triggering the uplink carrier handover. If the uplink carrier handover trigger condition is met, step 302 is performed, and if the uplink carrier trigger condition is not met, the terminal The switching of the uplink carrier may not be performed.
  • the first message may include a first measurement report, where the first measurement report includes a downlink signal quality.
  • the first measurement report includes a downlink signal quality.
  • the first message may include first indication information, where the first indication information is used to indicate that the downlink signal quality meets an uplink carrier handover triggering condition.
  • the first indication information may be used to notify the network device that the downlink signal quality meets the uplink carrier handover triggering condition, and then request the network device to perform carrier switching.
  • the first indication information may be used to notify the network device terminal that the uplink carrier handover is completed.
  • the terminal may switch the uplink carrier from the NR UL carrier to the SUL carrier, or After the SUL carrier switches to the NR UL carrier, the first indication information is sent to notify the network device.
  • the first indication information and the downlink signal quality may be included in the first message.
  • the network device may control the terminal to perform carrier switching according to the first indication information, or may further determine whether the downlink signal quality in the first message satisfies an uplink carrier handover trigger condition. If yes, the control terminal performs uplink carrier switching.
  • a quality threshold for triggering uplink carrier switching may be a first threshold.
  • the terminal can determine whether the downlink signal quality satisfies the uplink carrier switching trigger condition by the relationship between the downlink signal quality and the first threshold.
  • the uplink carrier switching trigger condition is a condition for triggering the terminal to start an uplink carrier switching procedure.
  • the embodiment of the present application provides two situations that determine that the uplink carrier switching trigger condition is met according to the downlink signal quality and the first threshold, respectively:
  • Case 1 If the uplink carrier of the terminal is the first uplink carrier, and the downlink signal quality is less than the first threshold, it is determined that the downlink signal quality satisfies the uplink carrier handover trigger condition.
  • the first uplink carrier may be an NR UL carrier.
  • the first uplink carriers described in this application may each be an NR UL carrier, which will not be described one by one below.
  • the configuration information may include a first threshold corresponding to each type of downlink signal quality.
  • the terminal determines that the uplink carrier switching trigger condition is met, for example, the downlink signal quality of any one or more types is less than the corresponding first
  • the terminal determines that the uplink carrier trigger condition is met, or when all types of downlink signal quality are smaller than the corresponding first threshold, the terminal determines that the uplink carrier switching trigger condition is satisfied.
  • the configuration information includes an RSRP threshold and an RSRQ threshold.
  • the RSRP is smaller than the RSRP threshold, or the RSRQ is less than the RSRQ threshold, or the RSRP is less than the RSRP threshold and the RSRQ is less than the RSRQ threshold.
  • Case 2 If the uplink carrier of the terminal is the second uplink carrier, and the downlink signal quality is greater than the first threshold, it is determined that the downlink signal quality satisfies the uplink carrier handover trigger condition.
  • the second uplink carrier may be a SUL carrier.
  • the second uplink carriers described in this application may each be a SUL carrier, which will not be described one by one below.
  • the configuration information may respectively include a first threshold corresponding to each type of downlink signal quality, and when at least one type of downlink signal quality is greater than the corresponding type At a threshold, the terminal determines that the uplink carrier switching trigger condition is met. For example, when any one or more types of downlink signal quality is greater than the corresponding first threshold, the terminal determines that the uplink carrier trigger condition is met, or when all types of downlink signal quality are greater than the respective corresponding first threshold, the terminal determines The uplink carrier switching trigger condition is satisfied.
  • the configuration information includes the RSRP threshold and the RSRQ threshold.
  • the RSRP is greater than the RSRP threshold and the RSRQ is greater than the RSRQ threshold, the downlink signal quality can be determined to satisfy the uplink carrier switching condition.
  • the configuration information may further include a hysteresis parameter and/or a trigger time, and then determining whether the uplink carrier switching trigger is satisfied according to the first value and/or the trigger time.
  • the condition, wherein the first value is a value obtained based on at least a downlink signal quality and a hysteresis parameter obtained by the terminal measurement.
  • the sum of the downlink signal quality and the hysteresis parameter obtained by the terminal measurement may be used to determine whether the uplink carrier switching trigger condition is met.
  • the downlink signal quality obtained based on the terminal measurement may be represented by Ms, and The hysteresis parameter is represented by Hys. If the duration of Ms+Hys less than the first threshold reaches the trigger time, it can be determined that the uplink carrier switching trigger condition is satisfied. Corresponding to the second case, the uplink signal switching trigger condition can be determined based on the difference between the downlink signal quality and the hysteresis parameter obtained by the terminal measurement.
  • the embodiment of the present application can represent the downlink signal quality obtained by the terminal measurement by using Ms, and the hysteresis parameter is used.
  • Hys if the duration of the Ms-Hys greater than the first threshold reaches the triggering time, it can be determined that the uplink carrier switching trigger condition is satisfied.
  • the use of the parameters such as the hysteresis parameter and/or the trigger time may be similar to the measurement report triggering inequality in the Long Term Evolution (LTE) system, which is not limited in this embodiment of the present application.
  • the network device may send a quality threshold for triggering uplink carrier handover to the terminal, and the terminal determines whether the uplink carrier switching trigger condition is met according to the downlink signal quality and the quality threshold for triggering the uplink carrier handover. That is, the embodiment of the present application provides an uplink carrier triggering condition for triggering the terminal to perform uplink carrier switching, so that the terminal can know how to perform uplink carrier switching. It can be understood that if the uplink carrier trigger condition is met, the terminal can perform uplink. Carrier switching can avoid the problem of uplink data transmission interruption due to the inability to perform uplink carrier switching.
  • the terminal may perform the uplink frequency point handover autonomously, and send the first indication information to the network device, or the terminal sends the measurement report or the first indication information to the network device by the network device.
  • the control terminal completes the uplink frequency point switching to avoid interruption of the uplink data transmission of the terminal.
  • the terminal or the network device may perform some or all of the steps in the foregoing embodiments, and the steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. Further, the various steps may be performed in a different order as presented in the above embodiments, and it is possible that not all of the operations in the above embodiments are performed.
  • the network device may control the terminal to perform uplink carrier switching according to the first message.
  • the method includes: Step 401 to Step 404.
  • the steps 401 to 402 are the same as the above steps 301 to 302, and are not described herein again.
  • Step 403 The network device sends, to the terminal, information for instructing the terminal to perform uplink carrier switching.
  • the terminal receives information from the network device for instructing the terminal to perform uplink carrier switching.
  • the information for indicating that the terminal performs uplink carrier switching may be information for indicating that the terminal switches from the first uplink carrier to the second uplink carrier, or is used to indicate that the terminal switches from the second uplink carrier to the first uplink carrier. .
  • the information used to indicate that the terminal performs uplink carrier handover may be carried in an RRC reconfiguration message, or other RRC message, or an L2 message or an L1 message.
  • the network device may determine the downlink signal quality according to the first measurement report, and further determine, according to the obtained downlink signal quality, whether to send the terminal to the terminal to indicate the terminal from the first uplink carrier.
  • the network device sends, to the terminal, information indicating that the terminal switches from the first uplink carrier to the second uplink carrier; or, if the first message
  • the first indication information is included, and after receiving the first indication information, the network device sends, to the terminal, information indicating that the terminal switches from the first uplink carrier to the second uplink carrier.
  • the network device may not send information to the terminal to indicate that the terminal switches from the first uplink carrier to the second uplink carrier. .
  • the information indicating that the terminal switches from the first uplink carrier to the second uplink carrier indicates that the terminal switches from the first uplink carrier to the second uplink carrier.
  • the network device may determine the downlink signal quality according to the first measurement report, and further determine, according to the obtained downlink signal quality, whether to send the terminal to the terminal to indicate that the terminal is from the second uplink.
  • the information that the carrier switches to the first uplink carrier for example, if it is determined that the downlink signal quality is greater than the first threshold, sending information to the terminal for indicating that the terminal switches from the second uplink carrier to the first uplink carrier; or, if the first message includes The first indication information, after receiving the indication information, the network device sends, to the terminal, information for indicating that the terminal switches from the second uplink carrier to the first uplink carrier.
  • the network device may not send information indicating that the terminal switches from the second uplink carrier to the first uplink carrier.
  • the information indicating that the terminal switches from the second uplink carrier to the first uplink carrier indicates that the terminal switches from the second uplink carrier to the first uplink carrier.
  • Step 404 The terminal performs uplink carrier switching.
  • the terminal may switch from the first uplink carrier to the second uplink carrier. If the terminal receives the information indicating that the terminal switches from the second uplink carrier to the first uplink carrier, the terminal may switch from the second uplink carrier to the first uplink carrier.
  • the two arrows in FIG. 5 may represent two possible movement trajectories of the terminal.
  • the terminal may determine whether the downlink signal quality is less than the first threshold. For example, when the terminal moves from point A to point B, it may appear when approaching point B. If the downlink signal quality is lower than the first threshold, if the terminal determines that the downlink signal quality is less than the first threshold, and sends the first message to the network device, the network device may determine, according to the first message, that the downlink signal quality is less than the first threshold, and then send the signal to the terminal.
  • the information indicating that the terminal switches from the NR UL carrier to the SUL carrier is such that when the terminal is at the edge of the coverage of the NR UL carrier, the NR UL carrier can be switched to the SUL carrier.
  • the terminal may determine whether the downlink signal quality is greater than the first threshold, for example, when the terminal moves from point C to point B, when approaching point B, If the downlink signal quality is greater than the first threshold, the terminal may send the first message to the network device, and the network device may determine, according to the first message, that the downlink signal quality is greater than the first threshold, and then to the terminal.
  • the information for the terminal to perform uplink carrier switching is transmitted such that the terminal can switch from the SUL carrier to the NR UL carrier when approaching the coverage of the NR UL carrier.
  • the network device may instruct the terminal to perform uplink carrier switching according to the first measurement report reported by the terminal, so that the terminal can move from the center of the coverage of the NR carrier to the edge of the coverage of the NR UL carrier.
  • the uplink carrier may be switched from the NR UL carrier to the SUL carrier, or when the coverage from the SUL carrier coverage to the coverage of the NR UL carrier, the uplink carrier may be switched from the SUL carrier to the NR UL carrier to implement terminal mobility.
  • the uplink carrier switching in the process can avoid the problem that the uplink data transmission is interrupted due to the inability of the terminal to switch.
  • the terminal or the network device may perform some or all of the steps in the foregoing embodiments, and the steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. Further, the various steps may be performed in a different order as presented in the above embodiments, and it is possible that not all of the operations in the above embodiments are performed.
  • the configuration information may further include a second threshold or a threshold offset value.
  • an embodiment of the present application provides a communication method, as shown in FIG. 6, the method includes:
  • Step 601 The network device sends configuration information to the terminal.
  • the terminal receives configuration information from the network device.
  • the configuration information includes a quality threshold for triggering uplink carrier switching, and a quality threshold for triggering uplink carrier switching may be a first threshold.
  • the configuration information may further include a second threshold, where the second threshold is less than the first threshold
  • the configuration information may also include a threshold offset value.
  • the terminal may determine a third threshold according to the first threshold and the threshold offset value, where the third threshold is smaller than the first threshold.
  • the configuration information may further include at least one of a hysteresis parameter and a trigger time. It can be understood that the various configuration information exemplified in the embodiment of the present application may be sent at the same time, for example, in one message, or may not be sent at different times, for example, in different messages.
  • Steps 602 to 604 may refer to related descriptions in the foregoing steps 402 to 404, and details are not described herein again.
  • Step 605 When the terminal determines that the downlink signal quality is less than the second threshold or the third threshold, the second message is sent to the network device.
  • the network device receives the second message from the terminal.
  • the second message includes a second measurement report, where the second measurement report includes a downlink signal quality, or the second message includes a second indication information, where the second indication information is used to indicate that the downlink signal quality is less than the second threshold or the third threshold.
  • the second message may be an RRC message, a layer 1 (layer 1) message or a layer 2 (layer 2) message.
  • the terminal may determine the third threshold according to the first threshold and the threshold offset value, where the third threshold is smaller than the first threshold.
  • the third threshold may be the difference between the first threshold and the threshold offset value, and the third threshold may be the same as or different from the second threshold, which is not limited in this application.
  • the terminal may determine whether the second message may be sent according to the sum of the downlink signal quality and the hysteresis parameter measured by the terminal, and if the sum of the downlink signal quality and the hysteresis parameter is less than the third threshold or the second threshold, the trigger time is reached.
  • the terminal sends a second message to the network device.
  • the hysteresis parameter and the triggering time herein may be the same as the hysteresis parameter and the triggering time described in the second case of the above step 302, or the same as the hysteresis parameter and the triggering time described in the second case of the above step 302, but specific The parameter values are different.
  • the manner of use of the hysteresis parameter and/or the trigger time can be similarly described with reference to the second case of step 302 above.
  • the second message may be sent to the network device when the uplink carrier of the terminal is the second uplink carrier, and the downlink signal quality is less than the second threshold or the third threshold.
  • the second message is used to trigger the network device to configure the terminal to perform at least one of downlink intra-frequency measurement, inter-frequency measurement, or inter-system measurement.
  • the terminal can report the cell information of the target cell with good quality of service to the network device, and the network device switches the terminal to the target cell.
  • the network device may instruct the terminal to perform at least one of downlink intra-frequency measurement, inter-frequency measurement, or inter-system measurement, and the network device receives the cell information of the target cell with good service quality reported by the terminal.
  • the process of cell handover may be performed to enable the terminal to handover to the target cell.
  • Step 602 to step 604 are a handover procedure between different carriers in the same cell.
  • Step 605 is used to indicate that the current serving cell quality is deteriorated. It can be understood that steps 602 to 604 and step 605 are not in sequence. Relationships are triggered independently. Step 602 to step 604 are performed when the trigger condition of step 602 to step 604 is satisfied, and step 605 is executed when the trigger condition described in step 605 is satisfied. In a possible implementation, after performing step 602 to step 604, if the trigger condition described in step 605 is met, step 605 may be performed after step 602 to step 604.
  • the terminal when the uplink carrier of the terminal is an NR UL carrier, if the configuration information includes the first threshold, the second threshold, or the third threshold, if the downlink signal quality is less than the first threshold, and the downlink signal quality is less than The second threshold or the third threshold, the terminal may only perform step 605, and step 602 to step 604 are not performed.
  • the terminal may determine whether the downlink signal quality is less than a second threshold or a third threshold, for example, the uplink carrier of the terminal is NR UL carrier, but the terminal detects that the downlink signal quality is less than the second threshold or the third threshold, such as poor cell coverage or other special scenarios. If the terminal determines that the downlink signal quality is less than the second threshold or the third threshold, the terminal sends the downlink signal quality to the network device. The second message, the network device may determine, according to the second message, that the downlink signal quality is less than the second threshold or the third threshold.
  • the downlink signal quality may be performed according to a process when the downlink signal quality is less than the second threshold or the third threshold; that is, only steps may be performed. 605, step 602 to step 604 need not be performed.
  • the network device can configure the terminal to perform other measurements, such as at least one of the same frequency measurement, the inter-frequency measurement, or the different system measurement, so that the terminal timely reports the information of the target cell with good service quality, thereby Switch to the new target cell with good quality of service and avoid the call drop when the terminal moves to the edge of the cell.
  • the terminal may determine whether the downlink signal quality is smaller than the second threshold or the third threshold, for example, when the terminal moves to the edge of the coverage of the SUL carrier, If the downlink signal quality is lower than the second threshold or the third threshold, the terminal may send the second message to the network device, and the network device may determine the downlink signal quality according to the second message. Less than the second threshold or the third threshold.
  • the network device can configure the terminal to perform other measurements, such as at least one of the same frequency measurement, the inter-frequency measurement, or the different system measurement, so that the terminal timely reports the information of the target cell with good service quality, thereby Switch to the target cell with good quality of service and avoid the call drop when the terminal moves to the edge of the cell.
  • other measurements such as at least one of the same frequency measurement, the inter-frequency measurement, or the different system measurement
  • the network device may instruct the terminal to perform carrier switching according to the first measurement report reported by the terminal, so that the terminal can move from the center of the NR UL coverage to the edge of the coverage of the NR UL carrier.
  • the uplink carrier can be switched from the NR UL carrier to the SUL carrier, and when moving from the coverage edge of the SUL carrier to the coverage edge of the NR UL carrier, the uplink carrier can also be switched from the SUL carrier to the NR UL carrier to implement terminal movement.
  • the uplink carrier switching in the process can avoid the problem that the uplink data transmission is interrupted due to the inability of the carrier to switch, and if the downlink signal quality is less than the second threshold or the third threshold, the network device can configure the terminal to perform other measurements, so that The terminal timely reports the information of the target cell with good service quality, thereby switching the terminal to the target cell with good quality of service, and avoiding the terminal moving to the cell edge and dropping the call.
  • the terminal or the network device may perform some or all of the steps in the foregoing embodiments, and the steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. Further, the various steps may be performed in a different order as presented in the above embodiments, and it is possible that not all of the operations in the above embodiments are performed.
  • the configuration information in the foregoing embodiment may include a first threshold and a threshold offset value, and the terminal may determine a third threshold according to the first threshold and the threshold offset value, where the first threshold is greater than the first threshold.
  • the threshold for triggering the uplink frequency point handover may include a smaller threshold (eg, a fourth threshold) and a threshold offset value (in this implementation, the threshold offset value may be the same as the above
  • the threshold offset values described in the embodiments are the same, and may be independent of the threshold offset value in the above embodiment, wherein the fourth threshold has the same effect as the second threshold or the third threshold described above.
  • the terminal may determine the fifth threshold according to the fourth threshold and the threshold offset value, where the fifth threshold is greater than the fourth threshold.
  • the fifth threshold is the same as the first threshold in the foregoing embodiment, that is, the fifth threshold is a quality threshold for triggering uplink carrier switching.
  • the terminal may switch from the NR UL carrier to the SUL carrier according to the uplink carrier switching method described above, or if the uplink carrier of the terminal is the SUL carrier.
  • the terminal may switch from the SUL carrier to the NR UL carrier according to the method of uplink carrier switching described above.
  • the terminal may determine, according to the power headroom of the terminal, whether the power headroom report trigger condition is met, and then trigger the power headroom report trigger condition. Generate a power headroom report.
  • the power headroom report may be used to trigger the network device to perform uplink carrier switching. As shown in FIG. 7, the method includes:
  • Step 701 The network device sends configuration information to the terminal.
  • the terminal receives configuration information from the network device.
  • the configuration information includes a power headroom threshold, and the power headroom threshold is used to trigger a generated power headroom report.
  • the power headroom refers to the remaining uplink transmission power available to the terminal.
  • the configuration information in this step is not related to the configuration information in the foregoing step 301. If the solution in the foregoing embodiment is used, the network device sends the configuration information in step 301 to the terminal. If the solution of the embodiment corresponding to FIG. 7 and FIG. 8 is adopted, the network device sends the configuration information in step 701 to the terminal. Alternatively, in another possible implementation, the network device may carry the configuration information in step 701 and the configuration information in step 301 in the same message.
  • Step 702 When determining that the power headroom report trigger condition is met according to the power headroom and the power headroom threshold of the terminal, triggering to generate a power headroom report.
  • the power headroom report includes power headroom.
  • the power headroom report trigger condition is a condition for triggering the terminal trigger to generate a power headroom report.
  • the embodiment of the present application provides two ways to determine the trigger condition of the power headroom report according to the power headroom and the power headroom threshold of the terminal, respectively:
  • the configuration information may further include a hysteresis parameter and a trigger time, and the hysteresis parameter and the trigger time are used to avoid the ping-pong situation in which the power headroom report is triggered by using the above two possible implementation manners, and the method for avoiding ping-pong and the foregoing step 302 are described. The method is similar and will not be described here.
  • the method provided by the embodiment of the present application provides a new method for triggering the generation of a power headroom report.
  • the power headroom report may be triggered in time to facilitate
  • the network device can process the power headroom report according to the power headroom report, such as carrier switching and cell switching, to improve the service quality of the terminal.
  • the terminal or the network device may perform some or all of the steps in the foregoing embodiments, and the steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. Further, the various steps may be performed in a different order as presented in the above embodiments, and it is possible that not all of the operations in the above embodiments are performed.
  • the power headroom report may be reported to the network device, so that the network device performs uplink carrier switching according to the power headroom reporting control terminal.
  • the method includes: Step 801 to Step 805.
  • the steps 801 to 802 are the same as the above steps 701 to 702, and details are not described herein again.
  • the manner in which the terminal triggers the generation of the power headroom report in step 802 may be: if the uplink carrier of the terminal is the second uplink carrier, and the power is The remaining amount is greater than the power headroom threshold, and the power headroom is determined to satisfy the power headroom report triggering condition.
  • the method 2 of generating the power headroom report may be: if the uplink carrier of the terminal is the first uplink carrier, and the power headroom is less than the transmission power margin threshold, determining that the power headroom satisfies the power headroom report triggering condition.
  • Step 803 The terminal sends a power headroom report to the network device.
  • the network device receives a power headroom report.
  • step 803 can be performed to send a power headroom report to the network device.
  • Step 804 The network device sends a third message to the terminal.
  • the third message is used to indicate that the terminal switches from the first uplink carrier to the second uplink carrier, or the third message is used to indicate that the terminal switches from the second uplink carrier to the first uplink carrier.
  • the third message may be an RRC message, an L1 message or an L2 message, such as an RRC reconfiguration message.
  • the network device may determine the power headroom according to the power headroom report, and if the power headroom is determined to be smaller than the transmission power headroom threshold, send a third message to the terminal, where the third message is used to indicate that the terminal is from the first uplink.
  • the carrier is switched to the second uplink carrier.
  • the network device may determine the power headroom according to the power headroom report, and if the power headroom is greater than the transmission power headroom threshold, send a third message to the terminal, where the third message is used to indicate that the terminal is from the second uplink.
  • the carrier is switched to the first uplink carrier.
  • Step 805 The terminal performs uplink carrier switching according to the third message.
  • the terminal may switch from the first uplink carrier to the second uplink carrier according to the third message. If the third message is used to indicate that the terminal switches from the second uplink carrier to the first uplink carrier, the terminal may switch from the second uplink carrier to the first uplink carrier according to the third message.
  • the network device may instruct the terminal to perform uplink carrier switching according to the power headroom report reported by the terminal, so that the terminal can move from the center of the coverage of the NR UL carrier to the coverage edge of the NR UL carrier.
  • the uplink carrier may be switched from the NR UL carrier to the SUL carrier, or may be switched from the SUL carrier to the SUL carrier when moving from the edge of the coverage of the SUL carrier to the edge of the coverage of the NR UL carrier.
  • the terminal or the network device may perform some or all of the steps in the foregoing embodiments, and the steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. Further, the various steps may be performed in a different order as presented in the above embodiments, and it is possible that not all of the operations in the above embodiments are performed.
  • the embodiment corresponding to the embodiment of FIG. 8 and the embodiment corresponding to FIG. 3 to FIG. 6 can be used as two independent solutions, or in another possible implementation manner of the embodiment of the present application, the two solutions can be combined.
  • the terminal may determine whether the uplink carrier switching trigger condition is met according to the downlink signal quality and the transmission power margin.
  • Condition 1 The downlink signal quality is less than the quality threshold used to trigger the uplink carrier switch.
  • Condition 2 The downlink signal quality is greater than the quality threshold used to trigger the uplink carrier switch.
  • Condition 3 The power headroom is less than the power headroom threshold.
  • Condition 4 The power headroom is greater than the power headroom threshold.
  • the terminal may send a measurement report and a power headroom report to the network device, where the measurement report includes a downlink signal.
  • the power margin is included in the quality and power headroom report.
  • the terminal may send the indication information to the network device, where the indication information is used to indicate the foregoing condition 1 and condition 3, or the terminal may send the indication information and the power headroom report to the network device, where the indication information is used to indicate the condition 1 above.
  • the network device can instruct the terminal to switch from the NR UL carrier to the SUL carrier according to the received information.
  • any one of the condition 1 and the condition 3 is established, it may be determined that the uplink carrier switching trigger condition is satisfied.
  • the terminal may send a measurement report and a power headroom report to the network device, where the measurement report includes the downlink signal quality.
  • the power headroom report includes the transmission power headroom.
  • the terminal may send indication information to the network device, where the indication information is used to indicate the foregoing condition 2 and condition 4, or the terminal may send the indication information and the power headroom report to the network device, where the indication information is used to indicate the condition 1 above.
  • the network device can instruct the terminal to switch from the SUL carrier to the NR UL carrier according to the received information.
  • any one of the condition 2 and the condition 3 is established, it may be determined that the uplink carrier switching trigger condition is satisfied.
  • the coverage of the uplink carrier is related to the uplink transmission power of the terminal.
  • the terminal may have moved out or is about to remove the coverage range of the currently accessed uplink carrier.
  • the downlink signal quality and the transmission power margin are used to determine whether the uplink carrier switching trigger condition is met, and the timing of performing uplink carrier switching can be more accurately determined, so that the uplink carrier switching is more reasonable.
  • the embodiment of the present application further provides a communication method, which can be used in a process in which a terminal accesses a network device.
  • the network device can broadcast a large initial downlink signal quality threshold.
  • the initial downlink quality threshold is used to select an initial uplink carrier when the terminal accesses or camps on the access network device. For example, if the downlink signal quality is greater than the initial downlink signal quality threshold when the terminal accesses the network device, the NR UL carrier may be selected as the initial uplink carrier. If the downlink signal quality is less than the initial downlink signal quality threshold, the SUL carrier may be selected as the initial uplink carrier. . Because the initial downlink signal quality threshold broadcasted by the network side device is large, the terminal in the idle state and the terminal in the inactive state can preferentially access the SUL carrier, and the switching between the uplink carriers can be avoided as much as possible.
  • the network device may broadcast an indication message for indicating that the terminal can initiate initial access only on the SUL carrier. This method can avoid switching between uplink carriers as much as possible.
  • the network device may indicate a load condition of the first uplink carrier and the second uplink carrier, so that the terminal may select the uplink carrier to be accessed according to the load condition of the first uplink carrier and the second uplink carrier.
  • the downlink signal quality is greater than the initial downlink signal quality threshold
  • the selected initial uplink carrier is an NR UL carrier
  • the load of the NR UL carrier is greater than the load threshold
  • the SUL The carrier load is less than the load threshold
  • the initial uplink carrier selected by the terminal may be a SUL carrier.
  • the selected initial uplink carrier may be a SUL carrier, if the load of the SUL carrier is greater than the load threshold, and the load of the NR UL is less than the load Threshold, the selected initial uplink carrier may be an NR UL carrier.
  • the network device may send, to the terminal, indication information indicating that the terminal does not use the uplink carrier handover procedure, that is, after receiving the indication information, the terminal does not determine the downlink signal quality and the usage.
  • the quality threshold for triggering the uplink carrier switching determines whether the trigger condition of the uplink carrier switching is satisfied, and the uplink carrier switching is not performed based on the power headroom report. For example, if the uplink frequency of the terminal is the SUL frequency and the load of the NR UL frequency is higher than a certain threshold, the network device may send the indication information to the terminal to prevent the terminal from switching to the NR UL with higher load. Frequency.
  • the foregoing communication method for the terminal access network device can also be combined with the foregoing communication method of the embodiment shown in FIG. 3 to FIG. 8 , that is, the terminal can be connected by the method provided in this embodiment. After the network device is connected, an initial uplink carrier is selected, and then the uplink carrier switching is performed according to the method corresponding to the foregoing embodiment of FIG. 3 to FIG. 8.
  • the network device and the terminal are used as an example. It can be understood that the methods and functions implemented by the network device in the foregoing method embodiments may also be applicable to the network device.
  • the chip implementation, the methods and functions implemented by the terminal can also be implemented by a chip that can be used for the terminal.
  • the solution provided by the embodiment of the present application is mainly introduced from the perspective of interaction between different network elements.
  • the network device and the terminal include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above functions.
  • the embodiments of the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements of the examples and algorithm steps described in the embodiments disclosed in the application. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the technical solutions of the embodiments of the present application.
  • the embodiments of the present application may divide the functional units of the network device, the terminal, and the like according to the foregoing method examples.
  • each functional unit may be divided according to each function, or two or more functions may be integrated into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.
  • FIG. 9 shows a schematic block diagram of a communication device provided in an embodiment of the present application.
  • the device 900 may be in the form of software, may be a terminal, or may be a chip usable for the terminal.
  • the apparatus 900 includes a processing unit 902 and a communication unit 903.
  • the processing unit 902 is configured to perform control management on the action of the device 900.
  • the processing unit 902 is configured to support the device 900 to perform step 302 in FIG. 3, step 402 and step 404 in FIG. 4, step 602 in FIG. 604 and step 605, step 702 in FIG. 7, step 802 and step 805 in FIG. 8, and/or other processes for the techniques described herein.
  • Communication unit 903 is used to support communication between device 900 and other network elements, such as network devices.
  • the apparatus 900 can also include a storage unit 901 for storing program codes and data of the apparatus 900.
  • the processing unit 902 can be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 903 may be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage unit 901 can be a memory.
  • the processing unit 902 is a processor
  • the communication unit 903 is a transceiver
  • the storage unit 901 is a memory
  • the terminal involved in the embodiment of the present application may be the terminal shown in FIG.
  • FIG. 10 is a simplified schematic diagram showing a possible design structure of a terminal involved in the embodiment of the present application.
  • the terminal 1000 includes a transmitter 1001, a receiver 1002, and a processor 1003.
  • the processor 1003 may also be a controller, and is represented as "controller/processor 1003" in FIG.
  • the terminal 1000 may further include a modem processor 1005.
  • the modem processor 1005 may include an encoder 1006, a modulator 1007, a decoder 1008, and a demodulator 1009.
  • the transmitter 1001 conditions (eg, analog transforms, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Receiver 1002 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 1006 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 1007 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 1009 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 1008 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the terminal 1000.
  • Encoder 1006, modulator 1007, demodulator 1009, and decoder 1008 may be implemented by a composite modem processor 1005. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). It should be noted that when the terminal 1000 does not include the modem processor 1005, the above functions of the modem processor 1005 may also be completed by the processor 1003.
  • the processor 1003 controls and manages the operations of the terminal 1000 for performing the processing performed by the terminal 1000 in the embodiment of the present application.
  • the processor 1003 is further configured to perform the processes related to the terminal in the method shown in FIG. 3, FIG. 4, FIG. 6 to FIG. 8, and/or other processes of the technical solutions described in the present application.
  • the terminal 1000 may further include a memory 1004 for storing program codes and data for the terminal 1000.
  • FIG. 11 shows a possible exemplary block diagram of another communication device involved in the embodiment of the present application.
  • the device 1100 may be in the form of software, or may be a network device, such as a base station, or may be A chip for network devices.
  • the device 1100 includes a processing unit 1102 and a communication unit 1103.
  • the processing unit 1102 is configured to control and manage the actions of the device 1100.
  • the processing unit 1102 is configured to support the device 1100 to perform operations of the network device in FIG. 3, FIG. 4, and FIG. 6 to FIG. 8, and/or for the description herein. Other processes of technology.
  • the communication unit 1103 is for supporting communication of the device 1100 with other network entities (e.g., terminals).
  • the device 1100 may further include a storage unit 1101 for storing program codes and data of the device 1100.
  • the processing unit 1102 is configured to generate the foregoing configuration information, where the configuration information includes a quality threshold for triggering uplink carrier switching.
  • the processing unit 1102 can be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1103 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is a collective name. In a specific implementation, the communication interface may include multiple interfaces, for example, may include: an interface between the base station and the terminal and/or Or other interface.
  • the storage unit 1101 may be a memory.
  • the apparatus 1100 may be the base station shown in FIG.
  • the base station 1200 includes a processor 1202, a communication interface 1203, and a memory 1201.
  • the core network device 1200 may further include a bus 1204.
  • the communication interface 1203, the processor 1202, and the memory 1201 may be connected to each other through a bus 1204.
  • the bus 1204 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (abbreviated). EISA) bus and so on.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus 1204 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.
  • 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.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • the disclosed system, apparatus, and method 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 electrical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network devices. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the present application can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
  • the technical solution of the present application which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk, etc. includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present application.

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

Abstract

L'invention concerne un procédé et un dispositif de communication, se rapportant au domaine de la technologie de communication, et capables de résoudre le problème de l'interruption de transmission de données de liaison montante d'un terminal causé par l'incapacité à effectuer une commutation de porteuse de liaison montante. Le procédé selon la présente invention comporte les étapes consistant à: recevoir des informations de configuration en provenance d'un dispositif de réseau, les informations de configuration incluant un seuil de qualité utilisé pour déclencher la commutation de porteuse de liaison montante; et déterminer, selon la qualité du signal de liaison descendante et le seuil de qualité utilisé pour déclencher la commutation de porteuse de liaison montante, si une condition de déclenchement de la commutation de porteuse de liaison montante est satisfaite. La présente invention est applicable à un flux de commutation de porteuse.
PCT/CN2018/115936 2017-11-16 2018-11-16 Procédé et dispositif de communication Ceased WO2019096257A1 (fr)

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CN110337140B (zh) * 2019-05-31 2021-06-01 华为技术有限公司 一种通信方法及装置
CN112203288B (zh) * 2019-07-08 2022-09-06 中国移动通信集团浙江有限公司 Sul网络规划方法、装置、设备和存储介质
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CN111447639B (zh) * 2020-03-27 2022-08-16 佛山科学技术学院 一种网络连接控制方法、终端及存储介质
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CN112600633B (zh) * 2020-12-15 2023-04-07 Oppo广东移动通信有限公司 一种切换bwp的方法及终端设备
CN114698036B (zh) * 2020-12-29 2024-06-11 中国移动通信有限公司研究院 上行载波的选择方法、装置、终端及存储介质
CN113992214A (zh) * 2021-10-12 2022-01-28 维沃移动通信有限公司 射频控制方法、装置和电子设备
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CN121174229A (zh) * 2024-06-17 2025-12-19 华为技术有限公司 通信方法及装置

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