WO2018196710A1 - 一种小区切换、确定上行发送功率的方法及装置 - Google Patents
一种小区切换、确定上行发送功率的方法及装置 Download PDFInfo
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- WO2018196710A1 WO2018196710A1 PCT/CN2018/084058 CN2018084058W WO2018196710A1 WO 2018196710 A1 WO2018196710 A1 WO 2018196710A1 CN 2018084058 W CN2018084058 W CN 2018084058W WO 2018196710 A1 WO2018196710 A1 WO 2018196710A1
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- terminal device
- handover
- cell
- network device
- handover command
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- 238000005259 measurement Methods 0.000 claims abstract description 162
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
- H04W36/085—Reselecting an access point involving beams of access points
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00838—Resource reservation for handover
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- H—ELECTRICITY
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
Definitions
- the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and a device for cell handover and determining uplink transmit power.
- the mobility technology is a key technology.
- the terminal device can be moved between different base stations through a cell handover procedure.
- LTE Long Term Evolution
- the terminal device autonomously decides whether to perform cell handover, and the disadvantage is that the network side loses control of the terminal device.
- the base stations need to cooperate with each other.
- the target base station usually reserves resources for the terminal equipment to be switched. Then, if the target base station reserves resources, the terminal The device never initiates a switch and also causes a waste of resources.
- the embodiments of the present invention provide a method and a device for determining a cell handover and determining an uplink transmission power, which are used to strengthen network device control on a terminal device.
- a cell handover method which can be performed by a terminal device.
- the method includes: receiving, by the terminal device, an early handover command sent by the network device, where the early handover command is used to instruct the terminal device to determine whether to perform cell handover.
- the terminal device measures the downlink signal sent by the network device and/or the downlink signal sent by the other network device, and determines whether to perform cell handover according to the obtained measurement report and the handover condition carried by the early handover command. If the terminal device receives the handover command sent by the network device, the terminal device executes the handover command to switch from the current serving cell to the target cell.
- the terminal device can also perform measurement according to the downlink signal sent by the network device and/or the downlink signal sent by other network devices, that is, the terminal device can still measure the source cell and the target cell, however, the network device may still Sending a handover command to the terminal device, if the terminal device receives the handover command sent by the network device, the terminal device performs cell handover by executing the handover command. It can be seen that the network device has the control capability for the terminal device, and the network device does not lose control of the terminal device because the terminal device decides whether to switch.
- the network device may determine whether to send a handover command to the terminal device after comprehensively considering various factors, so as to enable the terminal device to perform cell handover as much as possible to avoid waste of resources.
- the terminal device determines whether to perform cell handover according to the obtained measurement report and the handover condition.
- the terminal device can continue to determine whether to perform cell handover, so as to ensure that the terminal device can complete the cell handover as soon as possible and reduce the handover delay.
- the terminal device if the terminal device receives the handover command sent by the network device, the terminal device performs a handover command to switch from the current serving cell to the target cell, and the terminal device according to the obtained measurement report and the handover.
- the conditional decision is to perform cell handover.
- the network device determines whether the terminal device performs cell handover, and the terminal device determines whether the terminal device performs cell handover. Both processes are performed, and which party first decides to switch the terminal device. Then, the terminal device performs the decision of which party to perform the cell handover. In this way, the efficiency of the terminal device for performing cell handover is improved.
- the terminal device sends a measurement report obtained by measuring a downlink signal sent by the network device and/or a downlink signal sent by another network device to the network device, and the measurement report is used by the network device to determine whether the terminal device is to be performed.
- Cell handover obtained by measuring a downlink signal sent by the network device and/or a downlink signal sent by another network device to the network device.
- the terminal device can send the measurement report to the network device in addition to the terminal device, and the network device can also determine whether the terminal device performs cell handover according to the measurement report sent by the terminal device.
- the network device does not need to measure itself, reducing the workload of the network device.
- the terminal device receives uplink configuration information sent by the network device.
- the terminal device sends an uplink reference signal to the network device according to the uplink configuration information, where the uplink reference signal is used by the network device to determine whether the terminal device needs to perform cell handover.
- the network device needs to judge whether the terminal device performs cell handover, and may also make a decision according to the measurement report obtained by the network device itself.
- the network device can send the uplink configuration information to the terminal device to configure the terminal device to send the uplink reference signal to the network device, and the network device can measure the uplink reference signal by itself after receiving the uplink reference signal sent by the terminal device, thereby obtaining the
- the measurement report determines whether the terminal device performs cell handover.
- the measurement report is obtained by the network device itself, so that the judgment result of the network device is more accurate and timely.
- the terminal device receives a handover cancellation command sent by the network device, and the handover cancellation command is used to cancel the function of the terminal device that determines the terminal device to perform cell handover. Then, the terminal device executes the handover cancel command to cancel whether the terminal device performs cell handover.
- the network device can configure the terminal device to perform conditional switching, or configure the terminal device to cancel conditional switching.
- the network device can improve the channel quality of the terminal device by monitoring, and the network device can configure the terminal device to cancel the conditional handover and continue to provide services for the terminal device. This can reduce the number of times the terminal equipment performs cell handover and ensure continuity of services.
- the target cell is determined by measuring the downlink signal sent by the network device and/or the downlink signal sent by the other network device, or the target cell is indicated by the handover command.
- the selected target cell may be selected by the terminal device according to the measurement report obtained by the terminal device, or may be selected according to the handover command sent by the network device, that is, the target cell may be determined by the terminal device. It can also be determined by the network device, and the method is more flexible.
- a cell handover method which can be performed by a network device, such as a base station.
- the method includes: the network device sends an early handover command to the terminal device, where the early handover command is used to instruct the terminal device to decide whether to perform cell handover.
- the network device determines whether the terminal device performs cell handover. If the network device determines that the terminal device needs to perform cell handover, the network device sends a handover command to the terminal device, where the handover command is used to instruct the terminal device to perform cell handover.
- the network device sends uplink configuration information to the terminal device, and the uplink configuration information is used by the terminal device to send an uplink reference signal to the network device.
- the network device receives the uplink reference signal sent by the terminal device.
- the network device measures the uplink reference signal and obtains a measurement report. Then, the network device determines whether the terminal device performs cell handover, and the network device determines, according to the obtained measurement report, whether the terminal device performs cell handover.
- the network device may decide whether the terminal device performs cell handover, and may have different judgment basis. Among them, the network device judges according to the measurement report measured by the network device itself is one of the judgment bases. In this judgment mode, the network device performs the judgment according to the measurement report measured by the network device, so that the judgment result of the network device is more accurate and timely.
- the network device receives the measurement report sent by the terminal device, and the measurement report is obtained by measuring, by the terminal device, the downlink signal sent by the network device and/or the downlink signal sent by other network devices. Then, the network device determines whether the terminal device performs cell handover, and the network device determines, according to the received measurement report, whether the terminal device performs cell handover.
- the network device may decide whether the terminal device performs cell handover, and may have different judgment basis.
- the judgment of the network device according to the measurement report sent by the terminal device is another judgment basis.
- the network device performs the judgment according to the measurement report sent by the terminal device, and the network device does not need to measure by itself, thereby reducing the workload of the network device.
- the network device determines whether the terminal device performs cell handover, including: if the timer set in the network device times out, the network device determines that the terminal device performs cell handover.
- the determination according to whether the timer expires is another judgment basis for the network device to determine whether the terminal device performs cell handover. This method is relatively simple. As long as the timer expires, the terminal device is judged to perform cell handover, and no more work is required to reduce the burden on the network device.
- the network device sends a handover cancel command to the terminal device, where the handover cancellation command is used to instruct the terminal device to stop determining whether to perform cell handover.
- the handover command carries a cell identifier
- the cell identifier is an identifier of a cell that the terminal device can switch.
- the handover command sent by the network device to the terminal device may carry the cell identifier, and the terminal device may select the target cell according to the cell identifier sent by the network device, so that the terminal device can work under the control of the network device, and enhance the control capability of the network device.
- a cell handover method which can be performed by a terminal device.
- the method includes: the terminal device receives an early handover command sent by the network device, the early handover command is used to instruct the terminal device to determine whether to perform cell handover, and the early handover command carries the cell identifier, where the cell identifier is performed by the network device according to the uplink signal sent by the terminal device.
- the cell identity is determined by the measurement as the identity of the cell that the terminal device can switch.
- the terminal device measures the downlink signal sent by the network device and/or the downlink signal sent by the other network device, and determines whether to perform cell handover according to the obtained measurement result and the handover condition carried by the early handover command.
- the terminal device switches from the current serving cell to the target cell, and the target cell is determined by the terminal device according to the obtained measurement report and/or the received cell identity.
- the terminal device may perform conditional switching, and the network device may also measure the uplink reference signal sent by the terminal device, thereby determining the cell identifier.
- the terminal device may select the best cell as the target cell from the cell identifier sent by the network device and/or the cell identifier determined by the terminal device, so that the selection range of the target cell is wider, and it is more helpful to select a cell with better performance.
- the terminal device receives the handover command sent by the network device, and the handover command is used for Instructing the terminal device to perform cell handover.
- the network device can also determine whether the terminal device performs cell handover. If the network device determines that the terminal device needs to perform cell handover, the network device can also directly send a handover command to the terminal device, and the terminal device can directly execute the handover command sent by the network device. The cell handover is performed, and the terminal device can select the target cell from the cell identifiers sent by the network device, which enhances the control capability of the network device and reduces the handover delay.
- a cell handover method which can be performed by a network device, such as a base station.
- the method includes: the network device receiving an uplink reference signal sent by the terminal device.
- the network device measures the uplink reference signal to obtain a measurement report.
- the network device determines the cell identifier according to the measurement report, where the cell identifier is an identifier of the cell that the terminal device can switch.
- the network device sends an early handover command to the terminal device, where the early handover command is used to instruct the terminal device to decide whether to perform cell handover, and the early handover command carries the cell identifier.
- the network device may measure the uplink reference signal sent by the terminal device to determine the cell identifier.
- the terminal device may select the best cell as the target cell from the cell identifier sent by the network device and/or the cell identifier determined by the terminal device, so that the selection range of the target cell is wider, and it is more helpful to select a cell with better performance.
- the network device sends a handover command to the terminal device, where the handover command is used to instruct the terminal device to perform cell handover.
- a fifth aspect provides a method for determining an uplink transmit power, where the method is performed by a network device, and the network device is a destination network device, that is, a network device after the terminal device is switched.
- the destination network device is, for example, a base station.
- the method includes: determining, by the destination network device, an uplink transmit power of the terminal device before the terminal device switches to the destination network device.
- the destination network device sends reference information to the source network device currently accessed by the terminal device, where the reference information is used to indicate the uplink sending power of the terminal device.
- the uplink transmission power of the terminal device after the handover of the terminal device may be determined by the target cell, so that the determined uplink transmission power is more accurate.
- the reference information includes offset and/or uplink path loss.
- the offset is an offset based on the initial transmit power of the terminal device, and the uplink path loss is the path loss between the terminal device and the destination network device.
- the terminal device can obtain the uplink transmission power after the handover.
- the destination network device determines the uplink transmit power of the terminal device, including: the destination network device receives the uplink reference signal sent by the terminal device, and the destination network device determines the uplink transmit power according to the transmit power of the uplink reference signal.
- the destination network device may directly receive the uplink reference signal sent by the terminal device, or the destination network device may obtain the uplink reference signal sent by the terminal device from the source network device, which is not limited in the embodiment of the present invention.
- the destination network device receives the message that the terminal device sends by using the uplink transmission power.
- the terminal device determines the uplink transmission power after the handover. After switching to the destination network device, the terminal device can use the determined uplink transmission power to send a message to the destination network device, thereby improving the success rate of message transmission.
- a method for determining an uplink transmit power is provided, the method being executable by a terminal device.
- the method includes: before the handover to the destination network device, the terminal device receives the reference information sent by the source network device, where the reference information is used to indicate the uplink transmission power of the message sent by the terminal device to the destination network device.
- the terminal device determines, according to the reference information, an uplink transmission power when the terminal device sends a message to the destination network device.
- the reference information includes offset and/or uplink path loss.
- the offset is an offset based on the initial transmit power of the terminal device, and the uplink path loss is the path loss between the terminal device and the destination network device.
- the terminal device after the terminal device switches to the destination network device, the terminal device sends power to the destination network device by sending power to the destination network device.
- a cell handover method which can be performed by a terminal device.
- the method includes: receiving, by the terminal device, an early handover command sent by the network device, where the early handover command is used to instruct the terminal device to determine whether to perform cell handover. If the reporting condition of the measurement report is satisfied before the switching condition carried by the early switching command, the terminal device sends a measurement report to the network device, where the measurement report is sent by the terminal device to the downlink signal sent by the network device and/or sent by another network device. The downlink signal is measured.
- the network device and/or the terminal device can promptly determine whether the terminal device performs cell handover, so that the terminal device can perform cell handover as soon as possible.
- the terminal device if the switching condition carried by the early switching command is satisfied before the reporting condition of the measurement report, or the switching condition carried by the early switching command is satisfied at the same time as the reporting condition of the measurement report, the terminal device is from the current The serving cell switches to the target cell.
- the terminal device preferentially performs cell handover. As long as the terminal device or the network device determines that the terminal device can perform cell handover, the terminal device performs cell handover to reduce the handover delay.
- a communication device has the function of implementing the terminal device in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
- the hardware or software includes one or more units corresponding to the functions described above.
- the specific structure of the communication device may include a receiving unit and a processing unit.
- the specific structure of the communication device may further include a transmitting unit.
- the receiving unit, the processing unit and the transmitting unit may perform the respective functions of the methods provided by the above first aspect or any one of the possible aspects of the first aspect.
- a communication device has the function of implementing the network device in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
- the hardware or software includes one or more units corresponding to the functions described above.
- the specific structure of the communication device may include a transmitting unit and a processing unit.
- the specific structure of the communication device may further include a receiving unit.
- the receiving unit, the transmitting unit and the processing unit may perform the respective functions of the methods provided by any of the possible aspects of the second aspect or the second aspect described above.
- a communication device has the function of implementing the terminal device in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
- the hardware or software includes one or more units corresponding to the functions described above.
- the specific structure of the communication device may include a receiving unit and a processing unit.
- the receiving unit and the processing unit may perform the respective functions of the methods provided by any of the possible aspects of the third aspect or the third aspect described above.
- a communication device has the function of implementing the network device in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
- the hardware or software includes one or more units corresponding to the functions described above.
- the specific structure of the communication device may include a receiving unit, a processing unit, and a transmitting unit.
- the receiving unit, the processing unit and the transmitting unit may perform the respective functions of the methods provided by any of the possible aspects of the fourth aspect or the fourth aspect described above.
- a communication device has the function of implementing the network device in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
- the hardware or software includes one or more units corresponding to the functions described above.
- the specific structure of the communication device may include a transmitting unit and a processing unit.
- the specific structure of the communication device can include a receiving unit.
- the receiving unit, the processing unit and the transmitting unit may perform the respective functions of the methods provided by any of the possible aspects of the fifth aspect or the fifth aspect described above.
- a communication device has the function of implementing the terminal device in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
- the hardware or software includes one or more units corresponding to the functions described above.
- the specific structure of the communication device may include a receiving unit and a processing unit.
- the specific structure of the communication device may include a transmitting unit.
- the receiving unit, the processing unit, and the transmitting unit may perform respective functions in the methods provided by any of the possible aspects of the sixth aspect or the sixth aspect described above.
- a communication device has the function of implementing the terminal device in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
- the hardware or software includes one or more units corresponding to the functions described above.
- the specific structure of the communication device may include a receiving unit and a transmitting unit.
- the specific structure of the communication device can include a processing unit.
- the receiving unit, the processing unit and the transmitting unit may perform the respective functions of the methods provided by any of the possible aspects of the seventh aspect or the seventh aspect described above.
- a communication device may be a terminal device or a functional module such as a chip disposed in the terminal device.
- the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
- the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method performed by the terminal device in any of the possible aspects of the first aspect or the first aspect described above.
- a communication device may be a network device or a functional module such as a chip disposed in the network device.
- the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
- the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method performed by the network device in any of the possible aspects of the second aspect or the second aspect above.
- a communication device may be a terminal device or a functional module such as a chip disposed in the terminal device.
- the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
- the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method performed by the terminal device in any of the possible aspects of the third aspect or the third aspect above.
- a communication device may be a network device or a functional module such as a chip disposed in the network device.
- the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
- the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method performed by the network device in any one of the possible aspects of the fourth aspect or the fourth aspect described above.
- a communication device may be a network device or a functional module such as a chip disposed in the network device.
- the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
- the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method performed by the destination network device in any of the possible aspects of the fifth aspect or the fifth aspect above.
- a communication device may be a terminal device or a functional module such as a chip disposed in the terminal device.
- the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
- the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method performed by the terminal device in any one of the possible aspects of the sixth aspect or the sixth aspect described above.
- a communication device may be a terminal device or a functional module such as a chip disposed in the terminal device.
- the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
- the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method performed by the terminal device in any one of the possible aspects of the seventh aspect or the seventh aspect described above.
- a twenty-second aspect a computer storage medium for storing computer software instructions for the communication device described in the above eighth aspect or the communication device described in the fifteenth aspect, and for performing the first Aspect or a program designed for a terminal device in any of the possible designs of the first aspect.
- a twenty-second aspect a computer storage medium for storing computer software instructions for the communication device described in the above ninth aspect or the communication device described in the sixteenth aspect, and for performing the second Aspect or a program designed for a network device in any of the possible designs of the second aspect.
- a twenty-third aspect a computer storage medium for storing computer software instructions for use in the communication device described in the above tenth aspect or the communication device described in the seventeenth aspect, and for performing the third Aspect or a program designed for a terminal device in any of the possible designs of the third aspect.
- a twenty-fourth aspect a computer storage medium for storing computer software instructions for use in the communication device described in the eleventh aspect or the communication device described in the eighteenth aspect, and for performing the above A program designed for a network device in any of the possible aspects of the fourth aspect or the fourth aspect.
- a twenty-fifth aspect a computer storage medium for storing computer software instructions for use in the communication device described in the twelfth aspect or the communication device described in the nineteenth aspect, and for performing the above A program designed for a network device in any of the possible aspects of the fifth aspect or the fifth aspect.
- a twenty-sixth aspect a computer storage medium for storing the computer software instructions for the communication device described in the thirteenth aspect or the communication device described in the twentieth aspect, and for performing the above A program designed for a terminal device in any of the possible aspects of the sixth aspect or the sixth aspect.
- a twenty-seventh aspect a computer storage medium for storing computer software instructions for use in the communication device described in the fourteenth aspect or the communication device described in the twenty-first aspect, and for performing the above A program designed for a terminal device in any one of the seventh aspect or the seventh aspect.
- a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of the possible aspects of the first aspect or the first aspect.
- a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of the possible aspects of the second aspect or the second aspect.
- a computer program product comprising instructions, when run on a computer, causes the computer to perform the method of any one of the possible aspects of the third aspect or the third aspect.
- a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of the possible aspects of the fourth aspect or the fourth aspect.
- a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of the possible aspects of the fifth aspect or the fifth aspect.
- a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of the possible aspects of the sixth aspect or the sixth aspect.
- a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of the possible aspects of the seventh aspect or the seventh aspect.
- the network device has the control capability for the terminal device, and the network device does not lose control of the terminal device because the terminal device decides whether to switch.
- FIGS. 1 to 2 are schematic diagrams of two application scenarios according to an embodiment of the present invention.
- FIG. 3 is a flowchart of a conditional handover according to an embodiment of the present invention.
- FIG. 4 is a flowchart of a cell handover method according to an embodiment of the present invention.
- FIG. 5 is a flowchart of a cell handover method according to an embodiment of the present invention.
- FIG. 6 is a flowchart of a cell handover method according to an embodiment of the present invention.
- FIG. 7 is a flowchart of a method for determining uplink transmit power according to an embodiment of the present invention.
- FIG. 15 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention.
- the technical solutions described herein can be used in an LTE system or a fifth generation mobile communication technology (5Generation, 5G) system, and can also be used in a next generation mobile communication system.
- 5Generation, 5G fifth generation mobile communication technology
- a network device for example comprising a base station (e.g., an access point), may refer to a device in the access network that communicates over the air interface with the wireless terminal device over one or more cells.
- the base station can be used to convert the received air frame with an Internet Protocol (IP) packet as a router between the terminal device and the rest of the access network, wherein the rest of the access network can include an IP network.
- IP Internet Protocol
- the base station can also coordinate attribute management of the air interface.
- the base station may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in an LTE system or an evolved LTE system (LTE-A), or may also include a next generation in a 5G system
- NodeB or eNB or e-NodeB, evolutional Node B in an LTE system or an evolved LTE system (LTE-A)
- LTE-A evolved LTE system
- LTE-A evolved LTE system
- the second generation node B (gNB) is not limited in the embodiment of the present invention.
- a terminal device including a device that provides voice and/or data connectivity to a user, for example, may include a handheld device having a wireless connection function, or a processing device connected to a wireless modem.
- the terminal device can communicate with the core network via a Radio Access Network (RAN) to exchange voice and/or data with the RAN.
- the terminal device may include a user equipment (User Equipment, UE), a wireless terminal device, a mobile terminal device, a Subscriber Unit, a Subscriber Station, a mobile station, a mobile station, and a remote station.
- Station Remote Station
- AP Access Point
- Remote Terminal Access Terminal
- User Terminal User Agent
- User Equipment User Equipment
- a mobile phone or "cellular” phone
- a computer with a mobile terminal device a portable, pocket, handheld, computer built-in or in-vehicle mobile device, smart wearable device, and the like.
- PCS Personal Communication Service
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- smart watches smart helmets, smart glasses, smart bracelets, and other equipment.
- restricted devices such as devices with lower power consumption, or devices with limited storage capacity, or devices with limited computing capabilities. Examples include information sensing devices such as bar code, radio frequency identification (RFID), sensors, Global Positioning System (GPS), and laser scanners.
- RFID radio frequency identification
- GPS Global Positioning System
- system and “network” in the embodiments of the present invention may be used interchangeably.
- Multiple means two or more, and in view of this, "a plurality” may also be understood as “at least two” in the embodiment of the present invention.
- the character "/” unless otherwise specified, generally indicates that the contextual object is an "or" relationship.
- FIG. 1 is an application scenario of an embodiment of the present invention.
- FIG. 1 includes a terminal device and a base station, where the base station is configured with three cells, namely, cell 1, cell 2, and cell 3, where cell 3 is the current serving cell of the terminal device. Then, if the terminal device performs cell handover, it is possible to switch to cell 1 or cell 2.
- FIG. 1 is exemplified by intra-base station handover, that is, the source cell before handover and the target cell after handover belong to one base station.
- the source cell before handover and the target cell after handover may also belong to different base stations.
- FIG. 2 is another application scenario of an embodiment of the present invention. 2 includes a terminal device, a base station 1 and a base station 2.
- the base station 1 is configured with three cells, namely, a cell 1, a cell 2, and a cell 3.
- the base station 2 is configured with two cells, namely, a cell 4 and a cell 5, wherein the cell 3 is the current serving cell of the terminal device. Then, if the terminal device performs cell handover, it is possible to switch to cell 1 or cell 2, that is, perform intra-base station handover, or switch to cell 4 or cell 5, that is, perform inter-base station handover.
- the handover method may be referred to as “conditional handover”.
- the terminal device determines whether to perform cell handover, and the terminal device This type of judgment is called “conditional judgment.”
- FIG. 3 is a flowchart of the conditional switching method.
- the embodiment is applied to the scenario shown in FIG. 2, where the cell 1, the cell 2, or the cell 3 provided by the base station 1 is a serving cell before the handover of the terminal device, and the cell provided by the base station 2 4 or cell 5 is a cell that the terminal device can switch.
- the terminal device interacts with the base station 1 with some user data (User Data). That is, the terminal device interacts with the serving cell provided by the base station 1 to user data.
- User Data User Data
- the base station 1 can perform a handover decision according to the user data.
- the handover decision here is different from the decision of whether the terminal device performs cell handover in the following, but can be understood as a decision whether to send an early HO command to the terminal device.
- the base station 1 and the base station 2 are configured and ready for handover (Handover, HO).
- the base station 1 and the base station 2 perform active mode reference signal resource pre-config and HO preperation.
- the base station 2 can notify the base station 1 of the configuration information for the terminal device to switch.
- the base station 2 can also reserve resources for the terminal device.
- the base station 1 sends an early handover command to the terminal device by using the serving cell, and the terminal device receives the early handover command.
- the early handover command is used to instruct the terminal device to decide whether to perform cell handover. That is, the terminal device knows the decision to perform the conditional handover according to the early handover command.
- the base station 1 sends a downlink signal beam in an active mode to the terminal device, and the terminal device receives the reference signal beam. It can be understood that the base station 1 transmits a downlink signal to the terminal device.
- the downlink signal sent by the base station 1 is, for example, a downlink reference signal.
- the base station 2 sends the downlink signal beam in the active mode to the terminal device, and the terminal device receives the reference signal beam. It can be understood that the base station 2 transmits a downlink signal to the terminal device.
- the downlink signal sent by the base station 2 is, for example, a downlink reference signal.
- S33 may be performed before S34, or S33 may be performed after S34, or S33 and S34 may be performed simultaneously.
- the base station 2 may transmit a downlink signal to the terminal device or may not transmit a downlink signal to the terminal device, and therefore the arrow for indicating S34 in FIG. 3 is drawn as a broken line.
- the terminal device obtains a measurement report of the reference signal in the active mode.
- the terminal device After receiving the downlink reference signal sent by the base station 1, the terminal device measures the downlink reference signal sent by the base station 1 to obtain a measurement report. Similarly, after receiving the downlink reference signal sent by the base station 2, the terminal device also measures the downlink reference signal sent by the base station 2 to obtain a measurement report. Then, the terminal device obtains a measurement report of the downlink reference signal in the active mode.
- the terminal device sends a random access preamble to the base station 2 to request access to the base station 2.
- the base station 2 receives the random access preamble.
- the terminal device After the terminal device obtains the measurement report, it determines whether to perform cell handover according to the measurement report and the handover condition. If the terminal device determines to perform cell handover, then S36 is performed.
- the base station 2 If the base station 2 agrees to access the terminal device, the base station 2 sends a random access response to the terminal device, and the terminal device receives the random access response.
- the terminal device interacts with the base station 2 with some user data. That is, the terminal device interacts with the new serving cell provided by the accessed base station 2.
- the terminal device sends a handover acknowledgement (Handover confirm) to the base station 2, and the base station 2 receives the handover confirmation.
- a handover acknowledgement Handover confirm
- the terminal device autonomously decides whether to perform cell handover.
- the disadvantage is that the network side loses control of the terminal device.
- the terminal device decides to switch as an example. However, if the terminal device decides not to switch, and the base station 2 reserves resources for the terminal device, it may cause waste of resources.
- the embodiment of the present invention provides a cell handover method.
- the terminal device can also perform measurement according to the downlink signal sent by the network device and/or the downlink signal sent by other network devices, that is, the terminal device can still be The source cell and the target cell perform measurement.
- the network device may still send a handover command to the terminal device. If the terminal device receives the handover command sent by the network device, the terminal device performs cell handover by executing the handover command. It can be seen that the network device has the control capability for the terminal device, and the network device does not lose control of the terminal device because the terminal device decides whether to switch.
- the network device may determine whether to send a handover command to the terminal device after comprehensively considering various factors, so as to enable the terminal device to perform cell handover as much as possible to avoid waste of resources.
- An embodiment of the present invention provides a cell handover method.
- FIG. 4 it is a flowchart of the method.
- the application scenario shown in FIG. 1 or the application scenario shown in FIG. 2 is taken as an example, and the cell 1, cell 2, or cell 3 provided by the base station 1 is a terminal.
- the service cell before the device handover is taken as an example.
- the S40 in the embodiment shown in FIG. 4 can refer to S30 in the embodiment shown in FIG. 3.
- the S41 in the embodiment shown in FIG. 4 can refer to S31 in the embodiment shown in FIG. It should be noted that since S40 and S41 are not mandatory steps, in order to distinguish from the necessary steps, the arrows for indicating these two steps are drawn as dashed lines in FIG.
- the base station 1 sends an early handover command to the terminal device by using the serving cell, and the terminal device receives the early handover command.
- the early handover command is used to instruct the terminal device to decide whether to perform cell handover. That is, the terminal device knows the decision to perform the conditional handover according to the early handover command.
- the early handover command may also carry the handover condition of the conditional handover, and the terminal device may perform the determination according to the handover condition.
- the base station 1 may further send a handover cancellation command to the terminal device, and the terminal device receives the handover cancellation command.
- the step of the base station 1 transmitting a handover cancel command to the terminal device may occur at any time after S42.
- the switch cancel command can be used to cancel the conditional switch of the early switch command configuration, that is, cancel the function of the terminal device to determine whether the terminal device performs cell handover.
- the terminal device If the terminal device receives the handover cancel command, the terminal device performs a handover cancel command to cancel whether the terminal device performs cell handover, that is, cancels the conditional handover. Then the terminal device can interrupt the measurement of the downlink reference signal. In this way, the decision of whether the terminal device performs cell handover is completely completed by the base station 1. Then, for example, if the base station 1 finds that the channel condition of the terminal device is improving, the base station 1 can continue to provide services for the terminal device without The terminal device performs cell handover.
- S43 in the embodiment shown in FIG. 4 can refer to S33 in the embodiment shown in FIG. 3.
- S44 in the embodiment shown in FIG. 4 can refer to S34 in the embodiment shown in FIG.
- S45 in the illustrated embodiment may refer to S35 in the embodiment shown in FIG. 3, and details are not described. It should be noted that since S43-S45 is not a mandatory step, in order to distinguish from the required steps, the arrows for indicating these three steps are drawn as dashed lines in FIG.
- the base station 1 performs a handover decision, that is, the base station 1 determines whether the terminal device performs cell handover. Where S46 is not a mandatory step, then in order to distinguish from the mandatory step, the arrow for indicating S46 is drawn as a broken line in FIG.
- the base station 1 performs handover decision, including but not limited to the following methods:
- the base station 1 measures the uplink reference signal sent by the terminal device to obtain a measurement report, and the base station determines whether the terminal device performs cell handover according to the obtained measurement report.
- the terminal device needs to send the uplink reference signal to the base station 1.
- the base station 1 can first configure the uplink measurement to the terminal device, that is, send the uplink configuration information to the terminal device, where the uplink configuration information is used to indicate the terminal device to the base station 1 Send an upstream reference signal.
- the uplink configuration information indicates information such as a resource used by the terminal device to send an uplink reference signal and a period for transmitting an uplink reference signal. Then, after receiving the uplink configuration information, the terminal device sends an uplink reference signal to the base station 1.
- the base station 1 may send the uplink configuration information to the terminal device in S42, that is, the uplink configuration information is sent in the early handover command, or the base station 1 may also send the uplink configuration information to the terminal device at other times, for example, in S42. Previously, or before S40, etc., as long as the base station 1 completes transmitting the uplink configuration information to the terminal device before S46. If the base station 1 transmits the uplink configuration information to the terminal device in the early handover command, the base station 1 can start the uplink measurement after the early handover command is sent, and the uplink measurement is performed from the beginning, thereby saving the transmission uplink. Reference signal and the resources used to make measurements.
- the terminal device sends a measurement report to the base station 1, and the base station 1 receives the measurement report sent by the terminal device, and determines whether the terminal device performs cell handover according to the received measurement report.
- the terminal device performs measurement on the received downlink reference signal.
- the terminal device For the measurement of the downlink reference signal by the terminal device, refer to S43 and S44 in the embodiment shown in FIG. 4.
- the terminal device may send the obtained measurement report to the base station 1.
- the base station 1 may first send the measurement report information to the terminal device, where the measurement report information is used to instruct the terminal device to send the measurement report to the base station 1.
- the terminal device sends a measurement report obtained by the terminal device to the base station 1.
- the base station 1 may send the measurement report information to the terminal device in S42, that is, the measurement report information is sent in the early handover command, or the base station 1 may send the measurement report information to the terminal device at other times, for example, in S42. Previously, or before S40, etc., as long as the base station 1 finishes transmitting measurement report information to the terminal device before S46. If the base station 1 sends the measurement report information to the terminal device before S42, the terminal device performs a conditional decision after receiving the early handover command in S42.
- the terminal device can continue to perform downlink measurement, that is, And continuing to measure the downlink reference signal sent by the base station 1 or other base station (for example, the base station 2), and can continue to send the newly obtained measurement report to the base station 1 according to the reporting condition of the measurement report, so that the base station 1 can obtain the latest in time.
- the measurement report is used to determine whether the terminal device performs cell handover more accurately, and the terminal device continuously measures the downlink reference signal. If the terminal device indicates that the terminal device does not successfully switch when the terminal device performs cell handover, the terminal device may also The measurement report obtained by the terminal device determines whether to perform cell handover, and ensures that the terminal device can complete the handover when the handover is needed. Or in this case, the terminal device may also stop performing downlink measurement, that is, cancel the process of measuring the downlink reference signal sent by the base station, and the power consumption of the terminal device may be reduced.
- the base station 1 sets a timer, and when the timer expires, the base station 1 triggers the terminal device to perform cell handover.
- the base station 1 can also perform the handover decision according to the A mode or the B mode as described above. If the base station 1 has triggered the terminal device to perform cell handover according to the A mode or the B mode decision before the timer expires, The base station 1 can turn off the timer, and if the base station 1 does not trigger the terminal device to perform cell handover according to the A mode or the B mode decision before the timer expires, the base station 1 triggers the terminal device when the timer expires. Perform cell handover.
- the base station 1 may not perform the handover decision, that is, the base station 1 does not determine whether the terminal device performs cell handover, and the base station 1 triggers the terminal device to perform cell handover as long as the timer expires.
- the base station performs a handover decision, and the decision result may trigger the terminal device to perform cell handover, and may also determine that the terminal device does not perform cell handover.
- the terminal device basically performs cell handover.
- the base station 1 sends a handover command to the terminal device, and the terminal device receives the handover command.
- the handover command is used to instruct the terminal device to perform cell handover. That is, if the base station 1 determines that the terminal device performs cell handover according to the decision mode described in S46, the base station 1 sends a handover command to the terminal device, and if the terminal device in the conditional decision receives the handover command sent by the base station 1, then The handover command is immediately executed, and cell handover is started without conditional decision.
- the terminal device may stop measuring the downlink reference signal, that is, cancel the measurement of the downlink reference signal, thereby reducing the operation and operation of the terminal device by terminating the measurement process.
- the terminal device continues to perform the measurement process of the downlink reference signal even if the handover command sent by the base station 1 is received, so that if the terminal device fails to access the target cell according to the handover command, the terminal device may perform downlink measurement according to the terminal device. Reselect the best cell to initiate access.
- the terminal device waits for a handover command.
- the base station 1 has transmitted a handover cancel command to the terminal device as described in S42, and the terminal device also receives the handover cancel command, canceling the conditional handover of the early handover command configuration. Then in this case, the terminal device can only wait for the handover command, and the terminal device cannot perform the conditional decision by itself.
- the terminal device selects to perform the first triggering, in this way the delay can be reduced.
- the base station 1 does not transmit a handover cancel command to the terminal device as described in S42.
- the terminal device executes the handover command, that is, the handover command arrives before the handover condition of the conditional handover is satisfied. If this is the case, the switching condition of the conditional switching of the terminal device is not satisfied before S46.
- the terminal device triggers the cell handover by the conditional handover process before receiving the handover command sent by the base station 1, and the terminal device performs the cell handover according to the trigger of the conditional handover process, that is, the conditional handover before the handover command arrives.
- the switching conditions are already met. If this is the case, the base station 1 and the terminal device will no longer perform S47.
- the terminal device performs the conditional decision from after S42, if the switching condition of the conditional switching is satisfied before the handover command arrives, the occurrence timing of S43-S47 in the step described above is possible.
- the processing is performed from the time when the switching condition is satisfied, and the subsequent steps are not executed, and S48, which will be described later, is directly executed.
- the terminal device always waits for a handover command.
- the base station 1 does not transmit a handover cancel command to the terminal device as described in S42.
- the terminal device does not perform the handover, but waits for the base station 1 to transmit the handover command.
- the switching condition of the conditional handover of the terminal device may or may not be satisfied before S46. That is to say, the terminal device is always waiting for the notification from the base station, and upon receiving the handover command sent by the base station 1, the terminal device immediately performs the handover.
- the network side has more control capabilities for the terminal device, so that the switching of the terminal device can be controlled by considering factors such as uplink coverage, load, interference, and access policy of the serving base station and the neighboring base station.
- the handover command sent by the base station 1 may carry the cell identifier, where the cell identifier is the cell identifier of the cell that the terminal device can switch, and the cell identifier is also determined by the base station 1 to measure the uplink reference signal sent by the terminal device.
- the cell identifier of the cell that the terminal device can switch is determined by the measurement of the uplink reference signal sent by the terminal device by the other base station (for example, the base station 2). If the cell identifier is measured by the base station 2, the base station 2 will obtain the obtained cell.
- the identifier is sent to the base station 1, and the base station 2 can carry the received cell identifier sent by the base station 2 in the handover command.
- the handover command is executed to switch to the target cell indicated by the handover command, that is, the terminal device can select one cell identifier from the cell identifier carried in the handover command as the target cell. The cell identity, thereby switching to the target cell.
- the terminal device may ignore the cell identifier determined according to the conditional handover procedure, that is, the terminal device preferentially switches according to the indication of the base station 1.
- the handover command sent by the base station 1 may not carry the cell identifier, that is, the base station 1 only informs the terminal device to perform handover, and does not tell the terminal device which cells can be switched to. Then, after receiving the handover command, the terminal device may select the target cell according to the measurement report obtained by the terminal device itself, wherein the terminal device can measure the downlink reference signal sent by the base station 1 and/or other base stations (for example, the base station 2). Get a measurement report. Obviously, this method is more suitable for the case where the base station 2 does not send a handover cancel command to the terminal device.
- the cell determined by the handover command or the cell determined by the terminal device according to the measurement report obtained by the terminal may be the cell provided by the base station 1 or the cell provided by another base station (for example, the base station 2).
- the terminal device performs an access process.
- the target cell of the terminal device is a cell provided by the base station 2 as an example.
- the random access process of the terminal device can refer to the existing technology, and details are not described herein.
- the network side has the control capability for the terminal device even in the conditional handover process of the terminal device.
- the base station may send a handover command before the terminal device obtains the conditional decision result, so as to trigger the terminal device to perform handover in advance, thereby shortening the handover delay.
- FIG. 4 is a flowchart of the method.
- the application scenario shown in FIG. 1 or the application scenario shown in FIG. 2 is taken as an example, and the cell 1, cell 2, or cell 3 provided by the base station 1 is a terminal.
- the service cell before the device handover is taken as an example.
- the base station 1 sends uplink configuration information to the terminal device, and the terminal device receives the uplink configuration information.
- the uplink configuration information is used to instruct the terminal device to send an uplink reference signal to the base station 1.
- the uplink configuration information indicates information such as a resource used by the terminal device to send an uplink reference signal and a period for transmitting an uplink reference signal.
- the terminal device sends an uplink reference signal to the base station 1, and the base station 1 receives the uplink reference signal sent by the terminal device. Then, the base station 1 can measure the uplink reference signal sent by the terminal device to obtain a measurement report.
- the base station 1 After receiving the measurement report, the base station 1 can determine the cell identifier according to the obtained measurement report, where the cell identifier is the cell identifier of the target cell that the terminal device can switch.
- the terminal device sends an uplink reference signal to the base station 2, and the base station 2 receives the uplink reference signal sent by the terminal device.
- the base station 2 receives the uplink reference signal sent by the terminal device, and may be an uplink reference signal directly sent by the terminal device, or the base station 2 is an uplink reference signal sent by the terminal device received by the base station 1. Then, the base station 2 can measure the uplink reference signal sent by the terminal device to obtain a measurement report.
- the terminal device sends an uplink reference signal, and other base stations may receive the base station 1 in addition to the base station 1, and the base station 2 also receives the uplink reference signal sent by the terminal device as an example. If the base station 2 measures the uplink reference signal sent by the terminal device to obtain a measurement report, the base station 2 may send the obtained measurement report to the base station 1, or the base station 2 may send the cell identifier determined according to the measurement report obtained by the base station 2 to Base station 1. These cell identifiers are cell identifiers of target cells that the terminal device can switch.
- the base station 2 may receive the uplink reference signal transmitted by the terminal device, and may not receive the uplink reference signal transmitted by the terminal device, the arrow indicating S52 is drawn as a broken line in FIG.
- the terminal device interacts with the base station 1 with some user data. That is, the terminal device interacts with the serving cell provided by the base station 1 to user data.
- the base station 1 can perform a handover decision according to the user data.
- the handover decision here is different from the decision of whether the terminal device performs cell handover in the following, but can be understood as a decision whether to send an early handover command to the terminal device.
- the base station 1 and the base station 2 are configured and ready for HO.
- the base station 1 and the base station 2 perform active mode reference signal resource pre-configuration and handover preparation.
- the base station 2 can notify the base station 1 of the configuration information for the terminal device to switch.
- the base station 1 sends an early handover command to the terminal device by using the serving cell, and the terminal device receives the early handover command.
- the early handover command is used to instruct the terminal device to decide whether to perform cell handover. That is, the terminal device knows the decision to perform the conditional handover according to the early handover command.
- the early handover command may carry the handover condition of the conditional handover, and the terminal device may perform the determination according to the handover condition.
- the early handover command may further carry the cell identity determined by the base station 1 and/or the cell identity determined by the base station 2.
- S56 in the embodiment shown in FIG. 5 can refer to S33 in the embodiment shown in FIG. 3, and S57 in the embodiment shown in FIG. 5 can refer to S34 in the embodiment shown in FIG. S58 in the illustrated embodiment may refer to S35 in the embodiment shown in FIG. 3, and details are not described. It should be noted that since S56 and S57 are not mandatory steps, in order to distinguish from the required steps, the arrows for indicating these two steps are drawn as dashed lines in FIG.
- the terminal device performs an access process.
- the target cell of the terminal device is a cell provided by the base station 2 as an example.
- the terminal device switches from the current serving cell to the target cell.
- the target cell is determined by the terminal device according to the measurement report obtained by the terminal device itself, and/or is determined by the terminal device according to the received cell identifier sent by the base station 1.
- the terminal device may determine whether to perform cell handover according to the conditional handover. If it is determined to perform cell handover, the terminal device performs measurement measurement according to the terminal device itself and/or according to the received cell sent by the base station 1. Identification to determine the target cell.
- the terminal device may determine to perform cell handover according to a handover command sent by the base station 1. If the method is such that the base station 1 determines that the terminal device needs to perform cell handover according to the measurement report obtained by the base station 1 and/or the measurement report sent by the received base station 2, the base station 1 sends a handover command to the terminal device before S59. Refer to S60 in Fig. 5. Since the base station 1 has transmitted the cell identity to the terminal device through the early handover command in S55, the base station 1 may no longer carry the cell identity in the handover command. In addition, since the base station 1 transmits the handover command to the terminal device as an optional implementation, which is not an essential step, the arrow for indicating S60 is drawn as a broken line in FIG.
- the terminal device can stop the conditional decision and immediately execute the handover command.
- the target cell is determined according to the measurement report obtained by the terminal device itself and/or according to the received cell identifier sent by the base station 1.
- the two processes of the conditional handover and the handover of the base station notification are also involved in the embodiment of the present invention.
- the handover may be performed first. For example, if the terminal device does not trigger the cell handover in the conditional handover process, and the terminal device receives the handover command sent by the base station 1, the terminal device executes the handover command.
- the terminal device triggers the cell handover by the conditional handover procedure before receiving the handover command sent by the base station 1, and then the terminal device performs the cell handover according to the trigger of the conditional handover procedure.
- the terminal device may select the best cell as the target cell from the cell identifier sent by the base station 1 and/or the cell identifier determined by the terminal device itself, so that the selection range of the target cell is wider, and the selection is more helpful. To a better performing community.
- FIG. 4 how to increase the control of the terminal device on the network side during the conditional handover process of the terminal device is mainly introduced.
- the terminal device is selected to select the target. Community.
- an embodiment of a cell handover method is introduced.
- a terminal device in a conditional handover process is mainly introduced when a measurement report is sent.
- FIG. 6, which is a flowchart of the method.
- the application scenario shown in FIG. 1 or the application scenario shown in FIG. 2 is taken as an example, and the cell 1, cell 2, or cell 3 provided by the base station 1 is a terminal.
- the serving cell before the device handover, the cell 4 or the cell 5 provided by the base station 2 is the target cell of the terminal device as an example.
- the S60 in the embodiment shown in FIG. 6 can refer to S30 in the embodiment shown in FIG. 3.
- the S61 in the embodiment shown in FIG. 6 can refer to S31 in the embodiment shown in FIG. It should be noted that since S60 and S61 are not mandatory steps, in order to distinguish from the mandatory steps, the arrows for indicating these two steps are drawn as dashed lines in FIG.
- the base station 1 sends an early handover command to the terminal device by using the serving cell, and the terminal device receives the early handover command.
- the early handover command is used to instruct the terminal device to decide whether to perform cell handover. That is, the terminal device knows the decision to perform the conditional handover according to the early handover command.
- the early handover command may also carry the handover condition of the conditional handover, and the terminal device may perform the determination according to the handover condition.
- the S63 in the embodiment shown in FIG. 6 can refer to S33 in the embodiment shown in FIG. 3.
- the S64 in the embodiment shown in FIG. 6 can refer to S34 in the embodiment shown in FIG.
- S65 in the illustrated embodiment may refer to S35 in the embodiment shown in FIG. 3, and details are not described. It should be noted that since S63-S65 is not a mandatory step, in order to distinguish from the required steps, the arrows for indicating these three steps are drawn as dashed lines in FIG.
- the base station 1 sends the measurement report information to the terminal device by using the serving cell, and the terminal device receives the measurement report information.
- the measurement report information is used to instruct the terminal device to send the obtained measurement report to the base station 1.
- the measurement report message may also carry the reporting condition of the measurement report, or the reporting condition of the measurement report may also be determined by the terminal device itself, or determined according to a protocol or standard.
- the terminal device transmits the measurement report obtained by the terminal device to the base station 1 when the reporting condition of the measurement report is satisfied.
- the reporting condition of a measurement report is that the measurement report obtained by the terminal device continuously meets the measurement threshold within a timer to trigger (TTT) duration.
- TTTT timer to trigger
- the following S67 is performed, if the switching condition carried by the early switching command is satisfied before the reporting condition of the measurement report, or the switching carried by the early switching command is performed. If the condition and the reporting condition of the measurement report are satisfied at the same time, the following S68 is performed.
- the S66 may occur before S62, or may occur anywhere between S62-S65, or may occur after S65, which is not limited in the embodiment of the present invention.
- the terminal device If the reporting condition of the measurement report is satisfied before the switching condition carried by the early handover command, the terminal device sends a measurement report to the base station 1.
- the base station 1 can determine, according to the measurement report, whether the terminal device is to perform cell handover.
- the terminal device switches from the current serving cell to the target cell. That is, the terminal device performs an access procedure for accessing the base station 2. That is, in this case, the terminal device performs cell handover in accordance with the decision result of the conditional handover.
- the base station 1 and/or the terminal device can promptly determine whether the terminal device performs cell handover, so that the terminal device can perform cell handover as soon as possible.
- the foregoing embodiments describe the method for the terminal device to perform cell handover, and the terminal device needs to communicate with the new cell after performing cell handover, which involves determining the uplink transmit power used by the terminal device for the new cell. problem.
- An embodiment is provided below for introducing a method for a terminal device to determine an uplink transmit power.
- the embodiment may be a single embodiment, or may be applied in combination with any of the embodiments shown in FIG. 3 and the embodiment shown in FIG. 6.
- FIG. 7 is a flowchart of the method.
- the application scenario shown in FIG. 1 or the application scenario shown in FIG. 2 is taken as an example, and the cell 1 or the cell 2 or the cell 3 provided by the base station 1 is a terminal device.
- the serving cell before handover, the cell 4 or the cell 5 provided by the base station 2 is a target cell of the terminal device as an example.
- the S70 in the embodiment shown in FIG. 7 can refer to S50 in the embodiment shown in FIG. 5, and details are not described.
- the terminal device sends an uplink reference signal to the base station 2 before switching to the base station 2.
- the base station 2 receives the uplink reference signal sent by the terminal device.
- the serving cell of the terminal device is also the cell provided by the base station 1.
- the base station 2 receives the uplink reference signal sent by the terminal device, and may be an uplink reference signal directly sent by the terminal device, or the base station 2 is an uplink reference signal sent by the terminal device received by the base station 1.
- the base station 2 may obtain reference information according to the received uplink reference signal, where the reference information is used to indicate an uplink transmit power of the terminal device.
- the reference information obtained by the base station 2 may include offset and/or uplink path loss.
- the offset is an offset based on the initial transmit power of the terminal device, that is, the base station 2 can determine the initial transmit power of the terminal device according to the received uplink reference signal, and the base station 2 adds an offset to the initial transmit power.
- the sum of the initial transmit power and the offset can be used as the uplink transmit power after the handover of the terminal device. Since the initial transmission power terminal device of the terminal device is aware, the base station 2 only needs to transmit the offset to the terminal device.
- the uplink transmission power of the terminal device determined according to the offset is expressed as follows:
- PPRACH min ⁇ P CMAX , PREAMBLE_RECEIVED_TARGET_POWER+Upstream PL+offset ⁇ _[dBm] (1)
- PPRACH indicates the determined uplink transmission power of the terminal device
- P CMAX indicates the maximum transmission power of the terminal device
- PREAMBLE_RECEIVED_TARGET_POWER indicates the target uplink reception power of the base station 2
- PL indicates the uplink path loss (Pathloss)
- offset indicates the offset.
- the uplink path loss is obtained by the base station 2 estimating the initial transmission power of the uplink reference signal received from the base station 1 and the received power of the uplink reference signal by the base station 2.
- the uplink path loss is calculated as follows:
- P1 represents the initial transmission power of the uplink reference signal of the terminal device
- P2 represents the reception power of the base station 2 for the uplink reference signal.
- the terminal device also sends the uplink reference signal to the base station 1.
- the base station 1 can also obtain the reference information according to the uplink reference signal sent by the terminal device, and details are not described herein.
- the base station 2 sends the obtained reference information to the base station 1, and the base station 1 receives the reference information sent by the base station 2.
- the base station 1 sends the reference information to the terminal device, and the terminal device receives the reference information sent by the base station 1.
- the base station 1 transmits the reference information to the terminal device by using the early handover command, or if the base station sends the handover command to the terminal device, the reference information may also be sent to the terminal device through the handover command.
- the reference information sent by the base station 1 to the terminal device may include reference information determined by the base station 1 and/or reference information determined by the base station 2.
- the terminal device determines, according to the received reference information, an uplink transmit power that is used when sending a message to the base station 2.
- the base station 2 can receive the message that the terminal device transmits with the determined uplink transmission power. For example, when the terminal device accesses the base station 2 through the random access procedure, the determined uplink transmission power is applied when the first message of the random access procedure is sent, or the terminal device applies the determination when sending the first message without scheduling. Uplink transmit power.
- the uplink transmission power of the terminal device after the handover of the terminal device may be determined by the target cell, so that the determined uplink transmission power is more accurate.
- FIG. 8 shows a schematic structural diagram of a communication device 800.
- the communication device 800 can implement the functions of the terminal device referred to above.
- the communication device 800 can include a processing unit 801 and a receiving unit 802.
- the communication device 800 may further include a sending unit 803.
- the processing unit 801 can be used to execute S35 and S38 in the embodiment shown in FIG. 3, S45 and S48 in the embodiment shown in FIG. 4, and/or other processes for supporting the techniques described herein.
- the receiving unit 802 can be used to perform S32, S33, and S34 in the embodiment shown in FIG. 3, S42, S43, S44, and S47 in the embodiment shown in FIG. 4, and/or to support the description herein. Other processes of technology.
- Transmitting unit 803 can be used to perform S36 and S39 in the embodiment shown in FIG. 3, and/or other processes for supporting the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
- FIG. 9 shows a schematic structural diagram of a communication device 900.
- the communication device 900 can implement the functions of the network devices referred to above.
- the communication device 900 can include a processing unit 901 and a transmitting unit 902.
- the communication device 900 may further include a receiving unit 903.
- the processing unit 901 can be used to perform S46 in the embodiment shown in FIG. 4, and/or other processes for supporting the techniques described herein.
- Transmitting unit 902 can be used to perform S32, S33, and S37 in the embodiment shown in FIG. 3, S42 and S47 in the embodiment shown in FIG. 4, and/or other processes for supporting the techniques described herein.
- the receiving unit 903 can be used to perform S36 and S39 in the embodiment shown in FIG. 3, and/or other processes for supporting the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
- FIG. 10 shows a schematic structural diagram of a communication device 1000.
- the communication device 1000 can implement the functions of the terminal device referred to above.
- the communication device 1000 can include a processing unit 1001 and a receiving unit 1002.
- the processing unit 1001 can be used to perform S59 in the embodiment shown in FIG. 5, and/or other processes for supporting the techniques described herein.
- the receiving unit 1002 can be used to perform S55 and S60 in the embodiment shown in FIG. 5, and/or other processes for supporting the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
- FIG. 11 shows a schematic structural diagram of a communication device 1100.
- the communication device 1100 can implement the functions of the network devices referred to above.
- the communication device 1100 may include a processing unit 1101, a receiving unit 1102, and a transmitting unit 1103.
- the processing unit 1101 can be used to perform S51 and S53 in the embodiment shown in FIG. 5, and/or other processes for supporting the techniques described herein.
- the receiving unit 1102 can be used to perform S51 in the embodiment shown in FIG. 5, and/or other processes for supporting the techniques described herein.
- Transmitting unit 1103 can be used to perform S55 and S60 in the embodiment shown in FIG. 5, and/or other processes for supporting the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
- FIG. 12 shows a schematic structural diagram of a communication device 1200.
- the communication device 1200 can implement the functions of the network devices referred to above.
- the communication device 1200 can include a processing unit 1201 and a transmitting unit 1202.
- the communication device 1200 further includes a receiving unit 1203.
- the processing unit 1201 can be used to perform S72 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein.
- Transmitting unit 1202 can be used to perform S73 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein.
- the receiving unit 1203 can be used to perform S71 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
- FIG. 13 shows a schematic structural diagram of a communication device 1300.
- the communication device 1300 can implement the functions of the terminal device referred to above.
- the communication device 1300 can include a processing unit 1301 and a receiving unit 1302.
- the communication device 1300 further includes a sending unit 1303.
- the processing unit 1301 can be used to execute S75 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein.
- the receiving unit 1302 can be used to perform S74 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein.
- Transmitting unit 1303 can be used to perform S71 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
- FIG. 14 shows a schematic structural diagram of a communication device 1400.
- the communication device 1400 can implement the functions of the terminal device referred to above.
- the communication device 1400 can include a transmitting unit 1401 and a receiving unit 1402.
- the communication device 1400 further includes a processing unit 1403.
- the transmitting unit 1401 can be used to execute S67 in the embodiment shown in FIG. 6, and/or other processes for supporting the techniques described herein.
- the receiving unit 1402 can be used to perform S62 and S66 in the embodiment shown in FIG. 6, and/or other processes for supporting the techniques described herein.
- Processing unit 1403 can be used to perform S68 in the embodiment illustrated in Figure 6, and/or other processes for supporting the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
- the communication device 800 to the communication device 1400 are presented in the form of dividing each functional module into individual functional modules, or may be presented in an integrated manner to divide the functional modules.
- a “module” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the above functionality. .
- ASIC application-specific integrated circuit
- any one of the communication device 800 to the communication device 1400 can also be implemented by the structure shown in FIG.
- the communication device 1500 can include a memory 1501, a processor 1502, a system bus 1503, and a communication interface 1504.
- the processor 1502, the memory 1501, and the communication interface 1504 are connected by a system bus 1503.
- the memory 1501 is configured to store computer execution instructions.
- the processor 1502 executes computer execution instructions stored in the memory 1501 to cause the communication device 1500 to execute the embodiment shown in FIG. 3 to the embodiment shown in FIG. A method provided by any of the embodiments.
- the communication interface 1504 can be a transceiver or an independent receiver and transmitter.
- receiving unit 802 can correspond to communication interface 1504 in FIG.
- the processing unit 801 can be embedded in or independent of the memory 1501 of the communication device 1500 in hardware/software.
- the transmitting unit 902 can correspond to the communication interface 1504 in FIG.
- the processing unit 901 can be embedded in or independent of the memory 1501 of the communication device 1500 in hardware/software.
- receiving unit 1002 can correspond to communication interface 1504 in FIG.
- Processing unit 1001 may be embedded in or separate from memory 1501 of communication device 1500 in hardware/software.
- receiving unit 1102 and transmitting unit 1103 may correspond to communication interface 1504 in FIG.
- Processing unit 1101 may be embedded in or separate from memory 1501 of communication device 1500 in hardware/software.
- the transmitting unit 1202 can correspond to the communication interface 1504 in FIG.
- Processing unit 1201 may be embedded in or separate from memory 1501 of communication device 1500 in hardware/software.
- receiving unit 1302 can correspond to communication interface 1504 in FIG.
- Processing unit 1301 may be embedded in or separate from memory 1501 of communication device 1500 in hardware/software.
- receiving unit 1402 and transmitting unit 1401 may correspond to communication interface 1504 in FIG.
- the processing unit 1403 may be embedded in or independent of the memory 1501 of the communication device 1500 in hardware form/software form.
- the communication device 1500 can be a field-programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), and a central processing unit ( Central processor unit (CPU), network processor (NP), digital signal processor (DSP), microcontroller (micro controller unit (MCU), programmable logic controller (programmable logic) Device, PLD) or other integrated chip.
- the communication device 1500 may also be a separate network element, such as a network device or a terminal device.
- the communication device 800 to the communication device 1400 provided by the embodiments of the present invention can be used to perform the method provided by any one of the embodiments shown in FIG. 3 to the embodiment shown in FIG. 7, the technical effects can be obtained. Reference may be made to the foregoing method embodiments, and details are not described herein again.
- the terminal device can also perform measurement according to the downlink signal sent by the network device and/or the downlink signal sent by other network devices, that is, the terminal device can still measure the source cell and the target cell, however, the network device may still Sending a handover command to the terminal device, if the terminal device receives the handover command sent by the network device, the terminal device performs cell handover by executing the handover command. It can be seen that the network device has the control capability for the terminal device, and the network device does not lose control of the terminal device because the terminal device decides whether to switch.
- the network device may determine whether to send a handover command to the terminal device after comprehensively considering various factors, so as to enable the terminal device to perform cell handover as much as possible to avoid waste of resources.
- Embodiments of the invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
- These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
- the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
- software it may be implemented in whole or in part in the form of a computer program product.
- the computer program product includes one or more computer instructions.
- the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
- 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 readable storage medium, for example, the computer instructions can be passed from a website site, computer, server or data center Wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
- 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 (eg, a Solid State Disk (SSD)) or the like.
- a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
- an optical medium eg, a DVD
- a semiconductor medium eg, a Solid State Disk (SSD)
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Abstract
一种小区切换、确定上行发送功率的方法及装置,用于加强网络设备对终端设备的控制。其中一种小区切换方法包括:终端设备接收网络设备发送的早切换命令,所述早切换命令用于指示所述终端设备判决是否进行小区切换;所述终端设备对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,根据得到的测量报告以及所述早切换命令携带的切换条件判决是否进行小区切换;若所述终端设备接收到所述网络设备发送的切换命令,则所述终端设备执行所述切换命令,以从当前的服务小区切换到目标小区。
Description
本申请要求在2017年4月28日提交中国专利局、申请号为201710296457.5、申请名称为“一种小区切换、确定上行发送功率的方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本发明实施例涉及通信技术领域,尤其涉及一种小区切换、确定上行发送功率的方法及装置。
在无线通信***中,移动性技术是一个关键技术,对于处于连接态的终端设备,可以通过小区切换过程实现终端设备在不同的基站之间移动。
目前在长期演进(Long Term Evolution,LTE)***中提供了一种终端设备进行小区切换的方式。在这种方式中,由源小区指示终端设备自行对源小区和目标小区进行测量,终端设备在测量后,根据得到的测量报告自主判决是否进行小区切换。
可见,在这种切换方式中,是终端设备自主判决是否进行小区切换,其缺点就是,会导致网络侧对终端设备失去控制。而且,终端设备在两个基站之间进行切换的过程中,基站之间需要相互配合,例如目标基站通常会为待切换的终端设备预留资源,那么,如果目标基站预留了资源,而终端设备又始终没有发起切换,还会导致资源浪费。
发明内容
本发明实施例提供一种小区切换、确定上行发送功率的方法及装置,用于加强网络设备对终端设备的控制。
第一方面,提供一种小区切换方法,该方法可由终端设备执行。该方法包括:终端设备接收网络设备发送的早切换命令,早切换命令用于指示终端设备判决是否进行小区切换。终端设备对网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,根据得到的测量报告以及早切换命令携带的切换条件判决是否进行小区切换。若终端设备接收到网络设备发送的切换命令,则终端设备执行所述切换命令,以从当前的服务小区切换到目标小区。
本发明实施例中,终端设备也能根据网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,即终端设备依然可以对源小区和目标小区进行测量,然而,网络设备依然可能向终端设备发送切换命令,如果终端设备接收了网络设备发送的切换命令,则终端设备会通过执行该切换命令进行小区切换。可见,网络设备对终端设备具有控制能力,不会因为完全由终端设备判决是否切换而导致网络设备对终端设备失去控制。而且,如果目标基站为待切换的终端设备预留了资源,则网络设备可以在综合考虑各种因素之后确定是否向终端设备发送切换命令,尽量使得终端设备能够进行小区切换,避免资源的浪费。
在一个可能的设计中,若终端设备未接收到网络设备发送的切换命令,则终端设备根据得到的测量报告以及切换条件判决是否进行小区切换。
如果终端设备没接收到网络设备发送的切换命令,则终端设备自己也能继续判决是否进行小区切换,从而尽量保证终端设备能够尽快完成小区切换,减小切换时延。
在一个可能的设计中,在若终端设备接收到所述网络设备发送的切换命令,则终端设备执行切换命令,以从当前的服务小区切换到目标小区之前,终端设备根据得到的测量报告以及切换条件判决进行小区切换。
可以理解为,在本发明实施例中,网络设备判决终端设备是否进行小区切换,以及终端设备判决终端设备是否进行小区切换,这两个过程是都在进行的,哪一方先判决终端设备进行切换,则终端设备就执行哪一方的判决,进行小区切换。通过这种方式,提高了终端设备进行小区切换的效率。
在一个可能的设计中,终端设备将对网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量得到的测量报告发送给网络设备,测量报告用于网络设备判决终端设备是否要进行小区切换。
终端设备得到测量报告后,除了可以自己判决终端设备是否进行小区切换之外,还可以将测量报告发送给网络设备,网络设备也可以根据终端设备发送的测量报告判决终端设备是否进行小区切换。则网络设备无需自行测量,减少网络设备的工作量。
在一个可能的设计中,终端设备接收网络设备发送的上行配置信息。终端设备根据上行配置信息向网络设备发送上行参考信号,上行参考信号用于网络设备判决终端设备是否要进行小区切换。
网络设备要判断终端设备是否进行小区切换,也可以根据网络设备自己得到的测量报告来进行判决。那么网络设备就可以向终端设备发送上行配置信息,以配置终端设备向网络设备发送上行参考信号,网络设备接收终端设备发送的上行参考信号后就可以自行对上行参考信号进行测量,从而根据得到的测量报告判决终端设备是否进行小区切换。由网络设备自行得到测量报告,使得网络设备的判决结果更为准确及时。
在一个可能的设计中,终端设备接收网络设备发送的切换取消命令,切换取消命令用于取消早切换命令配置的终端设备判决终端设备是否进行小区切换的功能。则终端设备执行该切换取消命令,以取消判决终端设备是否进行小区切换。
网络设备可以配置终端设备进行条件式切换,也可以配置终端设备取消条件式切换。例如网络设备通过监测发现终端设备的信道质量等逐渐变好,则网络设备可以配置终端设备取消条件式切换,继续为该终端设备提供服务。这样可以减少终端设备进行小区切换的次数,保证业务的连续性。
在一个可能的设计中,目标小区为终端设备通过对网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量确定的,或,目标小区为切换命令指示的。
终端设备进行小区切换时,所选择的目标小区可以是终端设备根据终端设备得到的测量报告选择的,或者也可以根据网络设备发送的切换命令选择的,即,目标小区可以是终端设备自行确定的,也可以是网络设备确定的,方式较为灵活。
第二方面,提供一种小区切换方法,该方法可由网络设备执行,网络设备例如为基站。该方法包括:网络设备向终端设备发送早切换命令,早切换命令用于指示终端设备判决是否进行小区切换。网络设备判决终端设备是否进行小区切换。若网络设备确定终端设备需进行小区切换,则网络设备向终端设备发送切换命令,切换命令用于指示终端设备进行小区切换。
在一个可能的设计中,网络设备向终端设备发送上行配置信息,上行配置信息用于终端设备向网络设备发送上行参考信号。网络设备接收终端设备发送的上行参考信号。网络 设备对上行参考信号进行测量,得到测量报告。则,网络设备判决终端设备是否进行小区切换,包括:网络设备根据得到的测量报告判决终端设备是否进行小区切换。
网络设备要判决终端设备是否进行小区切换,可以有不同的判决依据,其中,网络设备根据网络设备自行测量得到的测量报告进行判决就是其中的一种判决依据。在这种判决方式中,网络设备是根据网络设备自行测量得到的测量报告来进行判决,使得网络设备的判决结果更为准确及时。
在一个可能的设计中,网络设备接收终端设备发送的测量报告,测量报告为终端设备对网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量得到的。则网络设备判决终端设备是否进行小区切换,包括:网络设备根据接收的测量报告判决终端设备是否进行小区切换。
在前面介绍了,网络设备要判决终端设备是否进行小区切换,可以有不同的判决依据,其中,网络设备根据终端设备发送的测量报告进行判决是其中的另一种判决依据。在这种判决方式中,网络设备是根据终端设备发送的测量报告来进行判决,网络设备无需自行测量,减少了网络设备的工作量。
在一个可能的设计中,网络设备判决终端设备是否进行小区切换,包括:若网络设备中设置的定时器超时,则网络设备判决终端设备进行小区切换。
根据定时器是否超时来进行判决,是网络设备判决终端设备是否进行小区切换的另一种判决依据。这种方式较为简单,只要定时器超时就判决终端设备进行小区切换,无需做更多的工作,减轻网络设备的负担。
在一个可能的设计中,网络设备向终端设备发送切换取消命令,切换取消命令用于指示终端设备停止判决是否进行小区切换。
在一个可能的设计中,切换命令携带小区标识,小区标识为终端设备能够切换的小区的标识。
网络设备向终端设备发送的切换命令中可以携带小区标识,则终端设备可以根据网络设备发送的小区标识来选择目标小区,使得终端设备能够在网络设备的控制下工作,增强网络设备的控制力。
第三方面,提供一种小区切换方法,该方法可由终端设备执行。该方法包括:终端设备接收网络设备发送的早切换命令,早切换命令用于指示终端设备判决是否进行小区切换,早切换命令携带小区标识,小区标识为网络设备根据对终端设备发送的上行信号进行测量确定的,小区标识为终端设备能够切换的小区的标识。终端设备对网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,根据得到的测量结果以及早切换命令携带的切换条件确定是否进行小区切换。终端设备从当前的服务小区切换到目标小区,目标小区为终端设备根据得到的测量报告和/或接收的小区标识确定的。
在本发明实施例中,终端设备可以进行条件式切换,而网络设备也可以对终端设备发送的上行参考信号进行测量,从而确定小区标识。终端设备可以从网络设备发送的小区标识和/或终端设备自己确定的小区标识中选择最佳小区作为目标小区,使得目标小区的选择范围更宽泛,更有助于选择到性能较好的小区。
在一个可能的设计中,若目标小区为终端设备根据接收的小区标识确定的,则在终端设备从当前的服务小区切换到目标小区之前,终端设备接收网络设备发送的切换命令,切换命令用于指示终端设备进行小区切换。
网络设备也可以判决终端设备是否进行小区切换,如果网络设备确定终端设备需进行小区切换,则网络设备也可以直接向终端设备发送切换命令,则终端设备就可以直接执行网络设备发送的切换命令,以进行小区切换,且终端设备可以从网络设备发送的小区标识中选择目标小区,增强了网络设备的控制力,也减小了切换时延。
第四方面,提供一种小区切换方法,该方法可由网络设备执行,网络设备例如为基站。该方法包括:网络设备接收终端设备发送的上行参考信号。网络设备对上行参考信号进行测量,得到测量报告。网络设备根据测量报告确定小区标识,小区标识为终端设备能够切换的小区的标识。网络设备向终端设备发送早切换命令,早切换命令用于指示终端设备判决是否进行小区切换,早切换命令携带小区标识。
网络设备可以对终端设备发送的上行参考信号进行测量,从而确定小区标识。终端设备可以从网络设备发送的小区标识和/或终端设备自己确定的小区标识中选择最佳小区作为目标小区,使得目标小区的选择范围更宽泛,更有助于选择到性能较好的小区。
在一个可能的设计中,网络设备向终端设备发送切换命令,切换命令用于指示终端设备进行小区切换。
第五方面,提供一种确定上行发送功率的方法,该方法可由网络设备来执行,且该网络设备为目的网络设备,即终端设备切换后的网络设备。目的网络设备例如为基站。该方法包括:在终端设备切换到目的网络设备之前,目的网络设备确定终端设备的上行发送功率。目的网络设备向终端设备当前接入的源网络设备发送参考信息,参考信息用于指示终端设备的上行发送功率。
本发明实施例中,可以由目标小区来确定终端设备切换后的上行发送功率,使得确定的上行发送功率更为准确。
在一个可能的设计中,参考信息包括偏置和/或上行路损。偏置为在终端设备的初始发送功率基础上的偏置,上行路损为终端设备到目的网络设备之间的路损。
通过偏置和/或上行路损,终端设备就能够得到切换后的上行发送功率。
在一个可能的设计中,目的网络设备确定终端设备的上行发送功率,包括:目的网络设备接收终端设备发送的上行参考信号,目的网络设备根据上行参考信号的发送功率确定上行发送功率。
目的网络设备可以直接接收终端设备发送的上行参考信号,或者目的网络设备也可以从源网络设备获得终端设备发送的上行参考信号,本发明实施例不作限制。
在一个可能的设计中,在终端设备切换到目的网络设备后,目的网络设备接收终端设备通过上行发送功率发送的消息。
终端设备确定了切换后的上行发送功率,在切换到目的网络设备后,终端设备就可以使用确定的上行发送功率来向目的网络设备发送消息,提高了消息发送的成功率。
第六方面,提供一种确定上行发送功率的方法,该方法可由终端设备执行。该方法包括:终端设备在切换到目的网络设备之前,接收源网络设备发送的参考信息,参考信息用于指示终端设备向目的网络设备发送消息的上行发送功率。终端设备根据参考信息确定终端设备在向目的网络设备发送消息时的上行发送功率。
在一个可能的设计中,参考信息包括偏置和/或上行路损。偏置为在终端设备的初始发送功率基础上的偏置,上行路损为终端设备到目的网络设备之间的路损。
在一个可能的设计中,在终端设备切换到目的网络设备后,终端设备以上行发送功率 向目的网络设备发送消息。
第七方面,提供一种小区切换方法,该方法可由终端设备执行。该方法包括:终端设备接收网络设备发送的早切换命令,早切换命令用于指示终端设备判决是否进行小区切换。若测量报告的上报条件在早切换命令携带的切换条件之前被满足,则终端设备向网络设备发送测量报告,其中,测量报告是终端设备对网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量得到的。
通过这种方式,可以使得网络设备和/或终端设备都及时判决终端设备是否进行小区切换,从而终端设备可以尽快进行小区切换。
在一个可能的设计中,若早切换命令携带的切换条件在测量报告的上报条件之前被满足,或,早切换命令携带的切换条件与测量报告的上报条件同时被满足,则终端设备从当前的服务小区切换到目标小区。
即,终端设备是优先进行小区切换,只要终端设备或网络设备判决终端设备能够进行小区切换,则终端设备就执行小区切换,减小切换时延。
第八方面,提供一种通信装置。该通信装置具有实现上述方法设计中终端设备的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
在一个可能的设计中,通信装置的具体结构可包括接收单元和处理单元。在另一个可能的设计中,通信装置的具体结构还可以包括发送单元。接收单元、处理单元和发送单元可执行上述第一方面或第一方面的任意一种可能的设计所提供的方法中的相应功能。
第九方面,提供一种通信装置。该通信装置具有实现上述方法设计中网络设备的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
在一个可能的设计中,通信装置的具体结构可包括发送单元和处理单元。在另一个可能的设计中,通信装置的具体结构还可以包括接收单元。接收单元、发送单元和处理单元可执行上述第二方面或第二方面的任意一种可能的设计所提供的方法中的相应功能。
第十方面,提供一种通信装置。该通信装置具有实现上述方法设计中终端设备的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
在一个可能的设计中,通信装置的具体结构可包括接收单元和处理单元。接收单元和处理单元可执行上述第三方面或第三方面的任意一种可能的设计所提供的方法中的相应功能。
第十一方面,提供一种通信装置。该通信装置具有实现上述方法设计中网络设备的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
在一个可能的设计中,通信装置的具体结构可包括接收单元、处理单元和发送单元。接收单元、处理单元和发送单元可执行上述第四方面或第四方面的任意一种可能的设计所提供的方法中的相应功能。
第十二方面,提供一种通信装置。该通信装置具有实现上述方法设计中网络设备的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
在一个可能的设计中,通信装置的具体结构可包括发送单元和处理单元。在另一个可能的设计中,通信装置的具体结构可包括接收单元。接收单元、处理单元和发送单元可执行上述第五方面或第五方面的任意一种可能的设计所提供的方法中的相应功能。
第十三方面,提供一种通信装置。该通信装置具有实现上述方法设计中终端设备的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
在一个可能的设计中,通信装置的具体结构可包括接收单元和处理单元。在另一个可能的设计中,通信装置的具体结构可包括发送单元。接收单元、处理单元和发送单元可执行上述第六方面或第六方面的任意一种可能的设计所提供的方法中的相应功能。
第十四方面,提供一种通信装置。该通信装置具有实现上述方法设计中终端设备的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
在一个可能的设计中,通信装置的具体结构可包括接收单元和发送单元。在另一个可能的设计中,通信装置的具体结构可包括处理单元。接收单元、处理单元和发送单元可执行上述第七方面或第七方面的任意一种可能的设计所提供的方法中的相应功能。
第十五方面,提供一种通信装置。该通信装置可以为终端设备,或者为设置在终端设备中的芯片等功能模块。该通信装置包括:存储器,用于存储计算机可执行程序代码;通信接口,以及处理器,处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令,当处理器执行所述指令时,所述指令使通信装置执行上述第一方面或第一方面的任意一种可能的设计中终端设备所执行的方法。
第十六方面,提供一种通信装置。该通信装置可以为网络设备,或者为设置在网络设备中的芯片等功能模块。该通信装置包括:存储器,用于存储计算机可执行程序代码;通信接口,以及处理器,处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令,当处理器执行所述指令时,所述指令使通信装置执行上述第二方面或第二方面的任意一种可能的设计中网络设备所执行的方法。
第十七方面,提供一种通信装置。该通信装置可以为终端设备,或者为设置在终端设备中的芯片等功能模块。该通信装置包括:存储器,用于存储计算机可执行程序代码;通信接口,以及处理器,处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令,当处理器执行所述指令时,所述指令使通信装置执行上述第三方面或第三方面的任意一种可能的设计中终端设备所执行的方法。
第十八方面,提供一种通信装置。该通信装置可以为网络设备,或者为设置在网络设备中的芯片等功能模块。该通信装置包括:存储器,用于存储计算机可执行程序代码;通信接口,以及处理器,处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令,当处理器执行所述指令时,所述指令使通信装置执行上述第四方面或第四方面的任意一种可能的设计中网络设备所执行的方法。
第十九方面,提供一种通信装置。该通信装置可以为网络设备,或者为设置在网络设备中的芯片等功能模块。该通信装置包括:存储器,用于存储计算机可执行程序代码;通信接口,以及处理器,处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令,当处理器执行所述指令时,所述指令使通信装置执行上述第五方面或第五方面的任意一种可能的设计中目的网络设备所执行的方法。
第二十方面,提供一种通信装置。该通信装置可以为终端设备,或者为设置在终端设备中的芯片等功能模块。该通信装置包括:存储器,用于存储计算机可执行程序代码;通信接口,以及处理器,处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令,当处理器执行所述指令时,所述指令使通信装置执行上述第六方面或第六方面的任意一种可能的设计中终端设备所执行的方法。
第二十一方面,提供一种通信装置。该通信装置可以为终端设备,或者为设置在终端设备中的芯片等功能模块。该通信装置包括:存储器,用于存储计算机可执行程序代码;通信接口,以及处理器,处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令,当处理器执行所述指令时,所述指令使通信装置执行上述第七方面或第七方面的任意一种可能的设计中终端设备所执行的方法。
第二十二方面,提供一种计算机存储介质,用于存储为上述第八方面所描述的通信装置或第十五方面所描述的通信装置所用的计算机软件指令,并包含用于执行上述第一方面或第一方面的任意一种可能的设计中为终端设备所设计的程序。
第二十二方面,提供一种计算机存储介质,用于存储为上述第九方面所描述的通信装置或第十六方面所描述的通信装置所用的计算机软件指令,并包含用于执行上述第二方面或第二方面的任意一种可能的设计中为网络设备所设计的程序。
第二十三方面,提供一种计算机存储介质,用于存储为上述第十方面所描述的通信装置或第十七方面所描述的通信装置所用的计算机软件指令,并包含用于执行上述第三方面或第三方面的任意一种可能的设计中为终端设备所设计的程序。
第二十四方面,提供一种计算机存储介质,用于存储为上述第十一方面所描述的通信装置或第十八方面所描述的通信装置所用的计算机软件指令,并包含用于执行上述第四方面或第四方面的任意一种可能的设计中为网络设备所设计的程序。
第二十五方面,提供一种计算机存储介质,用于存储为上述第十二方面所描述的通信装置或第十九方面所描述的通信装置所用的计算机软件指令,并包含用于执行上述第五方面或第五方面的任意一种可能的设计中为网络设备所设计的程序。
第二十六方面,提供一种计算机存储介质,用于存储为上述第十三方面所描述的通信装置或第二十方面所描述的通信装置所用的计算机软件指令,并包含用于执行上述第六方面或第六方面的任意一种可能的设计中为终端设备所设计的程序。
第二十七方面,提供一种计算机存储介质,用于存储为上述第十四方面所描述的通信装置或第二十一方面所描述的通信装置所用的计算机软件指令,并包含用于执行上述第七方面或第七方面的任意一种可能的设计中为终端设备所设计的程序。
第二十八方面,提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行第一方面或第一方面的任意一种可能的设计中所述的方法。
第二十九方面,提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行第二方面或第二方面的任意一种可能的设计中所述的方法。
第三十方面,提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行第三方面或第三方面的任意一种可能的设计中所述的方法。
第三十一方面,提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行第四方面或第四方面的任意一种可能的设计中所述的方法。
第三十二方面,提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得 计算机执行第五方面或第五方面的任意一种可能的设计中所述的方法。
第三十三方面,提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行第六方面或第六方面的任意一种可能的设计中所述的方法。
第三十四方面,提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行第七方面或第七方面的任意一种可能的设计中所述的方法。
本发明实施例中,网络设备对终端设备具有控制能力,不会因为完全由终端设备判决是否切换而导致网络设备对终端设备失去控制。
图1-图2为本发明实施例的两种应用场景示意图;
图3为本发明实施例提供的一种条件式切换的流程图;
图4为本发明实施例提供的一种小区切换方法的流程图;
图5为本发明实施例提供的一种小区切换方法的流程图;
图6为本发明实施例提供的一种小区切换方法的流程图;
图7为本发明实施例提供的一种确定上行发送功率的方法的流程图;
图8-图15为本发明实施例提供的通信装置的结构示意图。
下面将结合附图对本发明实施例作进一步地详细描述。
本文中描述的技术方案可用于LTE***或第五代移动通信技术(5Generation,5G)***,还可用于下一代移动通信***。
以下,对本发明实施例中的部分用语进行解释说明,以便于本领域技术人员理解。
(1)网络设备,例如包括基站(例如,接入点),可以是指接入网中在空中接口上通过一个或多个小区与无线终端设备通信的设备。基站可用于将收到的空中帧与网际协议(Internet Protocol,IP)分组进行相互转换,作为终端设备与接入网的其余部分之间的路由器,其中接入网的其余部分可包括IP网络。基站还可协调对空中接口的属性管理。例如,基站可以包括LTE***或演进的LTE***(LTE-Advanced,LTE-A)中的演进型基站(NodeB或eNB或e-NodeB,evolutional Node B),或者也可以包括5G***中的下一代节点B(next generation node B,gNB),本发明实施例并不限定。
(2)终端设备,包括向用户提供语音和/或数据连通性的设备,例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以经无线接入网(Radio Access Network,RAN)与核心网进行通信,与RAN交换语音和/或数据。该终端设备可以包括用户设备(User Equipment,UE)、无线终端设备、移动终端设备、订户单元(Subscriber Unit)、订户站(Subscriber Station),移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point,AP)、远程终端设备(Remote Terminal)、接入终端设备(Access Terminal)、用户终端设备(User Terminal)、用户代理(User Agent)、或用户装备(User Device)等。例如,可以包括移动电话(或称为“蜂窝”电话),具有移动终端设备的计算机,便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,智能穿戴式设备等。例如,个人通信业务(Personal Communication Service,PCS)电话、无绳电话、会话发起协议(Session Initiation Protocol,SIP)话机、无线本地环路(Wireless Local Loop,WLL)站、个人数字助理(Personal Digital Assistant,PDA)、智能手表、智能头盔、智能眼镜、智能手环、等设备。还包括受限设备,例如功耗较低的设备,或存储能力有限的设备,或计算能力有限的设备等。例如包括条码、射频识别(Radio Frequency Identification,RFID)、传感器、全球定位***(Global Positioning System,GPS)、激光扫描器等信息传感设备。
(3)本发明实施例中的术语“***”和“网络”可被互换使用。“多个”是指两个或两个以上,鉴于此,本发明实施例中也可以将“多个”理解为“至少两个”。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,字符“/”,如无特殊说明,一般表示前后关联对象是一种“或”的关系。
为了更好地理解本发明实施例的技术方案,首先介绍本发明实施例的应用场景。
请参见图1,为本发明实施例的一种应用场景。图1中包括终端设备和基站,该基站配置了三个小区,分别是小区1、小区2和小区3,其中小区3是终端设备当前的服务小区。那么如果终端设备进行小区切换,就有可能切换到小区1或小区2。
图1所示的应用场景是以基站内切换为例的,即切换前的源小区和切换后的目标小区属于一个基站。在本发明实施例中,切换前的源小区和切换后的目标小区也可能属于不同的基站。请参见图2,为本发明实施例的另一种应用场景。图2中包括终端设备、基站1和基站2,基站1配置了三个小区,分别是小区1、小区2和小区3,基站2配置了两个小区,分别是小区4和小区5,其中小区3是终端设备当前的服务小区。那么如果终端设备进行小区切换,既有可能切换到小区1或小区2,即进行基站内切换,也有可能切换到小区4或小区5,即进行基站间切换。
下面通过一个实施例先介绍一种小区切换的方法,这种切换方法可称为“条件式切换(conditional handover)”,在这种切换方法中,由终端设备自行判决是否进行小区切换,终端设备的这种判决方式称为“条件式判决”。请参考图3,为条件式切换方法的流程图。在下面的介绍过程中,以该实施例应用于图2所示的场景为例,其中基站1提供的小区1、小区2、或小区3是终端设备切换前的服务小区,基站2提供的小区4或小区5是终端设备可以切换的小区。
S30、终端设备与基站1交互一些用户数据(User Data)。也就是终端设备与基站1提供的服务小区交互用户数据。
基站1可以根据这些用户数据进行切换判决,这里的切换判决不同于后文中的判决终端设备是否进行小区切换的判决,而是可以理解为判决是否向终端设备发送早切换命令(Early HO command)。
S31、基站1与基站2进行配置以及做好切换(Handover,HO)准备。
例如基站1和基站2进行主动模式参考信号资源预配置以及切换准备(Active mode Reference Signal resource pre-config and HO preperation)。其中,基站2可以将配置信息通知基站1以供终端设备切换。另外,基站2还可以为终端设备预留资源。
S32、基站1通过服务小区向终端设备发送早切换命令,则终端设备接收该早切换命令。
该早切换命令就用于指示终端设备判决是否进行小区切换,也就是说,终端设备根据该早切换命令,就知道要进行条件式切换的判决。
S33、基站1向终端设备发送主动模式下的下行信号波束,则终端设备接收该参考信号波束。可以理解为基站1向终端设备发送下行信号。其中,基站1发送的下行信号例如为下行参考信号。
S34、基站2向终端设备发送主动模式下的下行信号波束,则终端设备接收该参考信号波束。可以理解为基站2向终端设备发送下行信号。其中,基站2发送的下行信号例如为下行参考信号。
其中,S33可以在S34之前进行,或者S33在S34之后进行,或者S33与S34同时进行。
另外,基站2可能会向终端设备发送下行信号,也可能不会向终端设备发送下行信号,因此图3中将用于表示S34的箭头画为虚线。
S35、终端设备得到主动模式下的参考信号的测量报告。
其中,终端设备接收基站1发送的下行参考信号后,对基站1发送的下行参考信号进行测量,得到测量报告。同理,终端设备接收基站2发送的下行参考信号后,也对基站2发送的下行参考信号进行测量,得到测量报告。则终端设备就得到了主动模式下的下行参考信号的测量报告。
S36、终端设备向基站2发送随机接入前导,以请求接入基站2。基站2接收该随机接入前导。
终端设备得到测量报告后,根据测量报告和切换条件判决是否进行小区切换。如果终端设备确定进行小区切换,则执行S36。
S37、基站2若同意终端设备接入,则向终端设备发送随机接入响应,终端设备接收该随机接入响应。
S38、终端设备与基站2交互一些用户数据。也就是终端设备与所接入的基站2提供的新的服务小区交互用户数据。
S39、终端设备向基站2发送切换确认(Handover confirm),则基站2接收切换确认。
在图3所示的实施例中,是终端设备自主判决是否进行小区切换,其缺点就是,会导致网络侧对终端设备失去控制。在介绍该实施例时,是以终端设备判决切换为例,但如果终端设备判决不切换,而基站2又为终端设备预留了资源,则就可能导致资源的浪费。
鉴于此,本发明实施例提供一种小区切换方法,在这种方法中,终端设备也能根据网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,即终端设备依然可以对源小区和目标小区进行测量,然而,网络设备依然可能向终端设备发送切换命令,如果终端设备接收了网络设备发送的切换命令,则终端设备会通过执行该切换命令进行小区切换。可见,网络设备对终端设备具有控制能力,不会因为完全由终端设备判决是否切换而导致网络设备对终端设备失去控制。而且,如果目标基站为待切换的终端设备预留了资源,则网络设备可以在综合考虑各种因素之后确定是否向终端设备发送切换命令,尽量使得终端设备能够进行小区切换,避免资源的浪费。
下面结合附图介绍本发明实施例提供的技术方案。
本发明一实施例提供一种小区切换方法,请参见图4,为该方法的流程图。其中,在下文的介绍过程中,以该方法应用在图1所示的应用场景或图2所示的应用场景为例,且以其中基站1提供的小区1、小区2、或小区3是终端设备切换前的服务小区为例。
图4所示的实施例中的S40可参考图3所示的实施例中的S30,图4所示的实施例中 的S41可参考图3所示的实施例中的S31,不多赘述。需注意的是,因为S40和S41不是必选的步骤,那么为了与必选的步骤相区分,在图4中将用于表示这两个步骤的箭头画为虚线。
S42、基站1通过服务小区向终端设备发送早切换命令,则终端设备接收该早切换命令。
该早切换命令就用于指示终端设备判决是否进行小区切换,也就是说,终端设备根据该早切换命令,就知道要进行条件式切换的判决。
该早切换命令中还可以携带条件式切换的切换条件,终端设备就可以根据该切换条件来进行判决。
在一种实施方式中,基站1在向终端设备发送早切换命令后,还可以向终端设备发送切换取消命令,则终端设备接收该切换取消命令。其中,基站1向终端设备发送切换取消命令的步骤可以发生在S42之后的任意时刻。该切换取消命令可以用于取消早切换命令配置的条件式切换,即取消终端设备判决终端设备是否进行小区切换的功能。
如果终端设备接收了切换取消命令,则终端设备执行切换取消命令,取消判决终端设备是否进行小区切换,也就是取消条件式切换。那么终端设备可以中断对下行参考信号的测量。这样相当于将终端设备是否进行小区切换的判决完全交由基站1完成,那么,例如基站1发现该终端设备的信道条件在好转,则基站1可以就继续为终端设备提供服务,而无需让该终端设备进行小区切换。
其中,图4所示的实施例中的S43可参考图3所示的实施例中的S33,图4所示的实施例中的S44可参考图3所示的实施例中的S34,图4所示的实施例中的S45可参考图3所示的实施例中的S35,不多赘述。需注意的是,因为S43-S45不是必选的步骤,那么为了与必选的步骤相区分,在图4中将用于表示这三个步骤的箭头画为虚线。
S46、基站1进行切换判决,即,基站1判决终端设备是否进行小区切换。其中,S46不是必选的步骤,那么为了与必选的步骤相区分,在图4中将用于表示S46的箭头画为虚线。
本文对于S46与S43-S45之间的先后顺序不作限制。
其中,基站1进行切换判决,包括但不限于以下几种方式:
A、基于上行测量的切换判决。
即,基站1对终端设备发送的上行参考信号进行测量,得到测量报告,基站根据得到的测量报告判决终端设备是否进行小区切换。
这就涉及到终端设备需要向基站1发送上行参考信号,那么,基站1可以先给终端设备配置上行测量,即,向终端设备发送上行配置信息,该上行配置信息用于指示终端设备向基站1发送上行参考信号。具体的,该上行配置信息指示终端设备发送上行参考信号所使用的资源以及发送上行参考信号的周期等信息。那么终端设备接收该上行配置信息后,就会向基站1发送上行参考信号。例如,基站1可以在S42中给终端设备发送上行配置信息,即,将上行配置信息承载在早切换命令中发送,或者,基站1也可以在其他时间向终端设备发送上行配置信息,例如在S42之前,或者在S40之前等,只要在S46之前基站1完成向终端设备发送上行配置信息即可。而如果基站1将上行配置信息承载在早切换命令中发送给 终端设备,则相当于基站1可以从发送早切换命令后开始进行上行测量,比从一开始就进行上行测量,更能节省发送上行参考信号和进行测量所占用的资源。
B、基于下行测量的切换判决。
即,终端设备向基站1发送测量报告,基站1接收终端设备发送的测量报告,并根据接收的测量报告判决终端设备是否进行小区切换。
具体的,终端设备对接收的下行参考信号进行测量,关于终端设备对下行参考信号的测量可参考图4所示的实施例中的S43和S44。终端设备在得到测量报告后,可以将得到的测量报告发送给基站1,其中,基站1可以先向终端设备发送测量上报信息,该测量上报信息就用于指示终端设备向基站1发送测量报告。终端设备接收该测量上报信息后,就会向基站1发送终端设备得到的测量报告。
例如,基站1可以在S42中给终端设备发送测量上报信息,即,将测量上报信息承载在早切换命令中发送,或者,基站1也可以在其他时间向终端设备发送测量上报信息,例如在S42之前,或者在S40之前等,只要在S46之前基站1完成向终端设备发送测量上报信息即可。其中,如果基站1在S42之前就向终端设备发送了测量上报信息,那么终端设备在S42中接收早切换命令后会进行条件式判决,在这种情况下,终端设备可以继续进行下行测量,即,继续对基站1或其他基站(例如基站2)发送的下行参考信号进行测量,并可以继续按照测量报告的上报条件来向基站1发送新得到的测量报告,这样方便基站1能够及时得到最新的测量报告,以更为准确地判决终端设备是否进行小区切换,并且,终端设备持续对下行参考信号进行测量,如果基站指示终端设备进行小区切换时终端设备未切换成功,则终端设备也还可以根据终端设备得到的测量报告来判决是否进行小区切换,尽量保证终端设备在需要切换时能够完成切换。或者在这种情况下,终端设备也可以停止进行下行测量,即取消对基站发送的下行参考信号进行测量的过程,可以减小终端设备的功耗。
C、基于定时器的切换判决。
这种方式也可以理解为是基于基站1的实现的判决方式。例如基站1设置定时器,该定时器超时时基站1就会触发终端设备进行小区切换。
在这种方式中,基站1也可以按照如上介绍的A方式或B方式进行切换判决,如果在该定时器超时之前基站1已经按照A方式或B方式的判决触发了终端设备进行小区切换,则基站1可以关闭该定时器,而如果在该定时器超时之前基站1还未按照A方式或B方式的判决触发终端设备进行小区切换,则在该定时器超时时,基站1就会触发终端设备进行小区切换。
或者在这种方式中,基站1可以不进行切换判决,即基站1不判决终端设备是否进行小区切换,只要该定时器超时,基站1就触发终端设备进行小区切换。
可见,在如上介绍的A方式或B方式中,基站是进行切换判决,判决结果有可能是触发终端设备进行小区切换,也有可能判决终端设备不进行小区切换。然而在C方式中,终端设备基本上一定会进行小区切换。
如上的三种切换判决的方式,可根据情况选择使用。
S47、基站1向终端设备发送切换命令,则终端设备接收该切换命令。该切换命令用于指示终端设备进行小区切换。也就是说,如果基站1按照S46中介绍的判决方式判决终端设备进行小区切换,则基站1向终端设备发送切换命令,处于条件式判决中的终端设备如果收到了基站1发送的切换命令,那么立即执行该切换命令,开始进行小区切换,而不再进行条件式判决。
其中,终端设备在接收基站发送的切换命令后,可以停止对下行参考信号进行测量,即取消对下行参考信号的测量,从而通过终止测量过程,减少终端设备操作和运算。或者,终端设备即使接收了基站1发送的切换命令,也继续进行对下行参考信号的测量过程,这样,如果终端设备根据切换命令接入目标小区失败,则终端设备可以根据终端设备的下行测量结果重新选择最佳小区发起接入。
作为另一种示例,终端设备等待切换命令。在这种示例中,基站1已经按照S42中的介绍,向终端设备发送了切换取消命令,终端设备也接收了切换取消命令,取消了早切换命令配置的条件式切换。那么在这种情况下,终端设备就只能等待切换命令,终端设备自己无法进行条件式判决。
作为一种示例,条件式切换和切换命令,终端设备选择执行先触发的一个,通过这种方式可以减小时延。在这种示例中,基站1未按照S42中的介绍向终端设备发送切换取消命令。例如,终端设备在条件式切换过程中未触发小区切换,而终端设备接收了基站1发送的切换命令,则终端设备就执行切换命令,即,切换命令在条件式切换的切换条件满足之前到达。如果是这种情况,那么在S46之前,终端设备的条件式切换的切换条件就尚未满足。或者,终端设备在接收基站1发送的切换命令之前就通过条件式切换过程触发了小区切换,那么终端设备就按照条件式切换过程的触发来执行小区切换,即,在切换命令到达之前条件式切换的切换条件就已满足。如果是这种情况,那么基站1和终端设备将不再执行S47。而考虑到终端设备是从S42之后开始进行条件式判决的,因此,如果在切换命令到达之前条件式切换的切换条件就已满足,而如上介绍的步骤中的S43-S47的发生时刻都有可能是切换条件满足的时刻,则从切换条件满足的时刻开始,对于之后的步骤,都不再执行,而直接执行如下将要介绍的S48。
作为另一种示例,终端设备始终等待切换命令。在这种示例中,基站1未按照S42中的介绍向终端设备发送切换取消命令。在该示例中,即使终端设备的条件式切换的切换条件已满足,终端设备也不会执行切换,而是等待基站1发送切换命令。如果是这种情况,那么在S46之前,终端设备的条件式切换的切换条件可能已经满足,也可能还未满足。也就是说,终端设备始终在等待基站的通知,一旦收到基站1发送的切换命令,终端设备就立即执行切换。这样做,使得网络侧对终端设备有更多的控制能力,这样可以综合考虑服务基站和邻基站的上行覆盖、负载、干扰、以及接入策略等因素来控制终端设备的切换。
在本发明实施例中,基站1发送的切换命令可以携带小区标识,小区标识是基站1对终端设备发送的上行参考信号进行测量确定的该终端设备能够切换的小区的小区标识,或者小区标识也可能是其他基站(例如基站2)对终端设备发送的上行参考信号进行测量确定 的该终端设备能够切换的小区的小区标识,如果小区标识是基站2测量得到的,那么基站2会将得到的小区标识发送给基站1,则基站2可以将所接收的基站2发送的小区标识携带在切换命令中。那么终端设备如果接收了基站1发送的切换命令,则执行该切换命令,切换到该切换命令所指示的目标小区,即终端设备可以从切换命令携带的小区标识中选择一个小区标识作为目标小区的小区标识,从而切换到该目标小区。此时,终端设备如果根据条件式切换过程也确定了一些能够切换的小区的小区标识,则终端设备可以忽略根据条件式切换过程确定的小区标识,即终端设备优先按照基站1的指示来切换。
或者,基站1发送的切换命令中也可以不携带小区标识,即,基站1只是通知终端设备进行切换,并未告诉终端设备能够切换到哪些小区。那么,终端设备接收切换命令后,就可以根据终端设备自己得到的测量报告来选择目标小区,其中,终端设备对基站1和/或其他基站(例如基站2)发送的下行参考信号进行测量就能得到测量报告。显然,这种方式更适用于基站2未向终端设备发送切换取消命令的情况。
无论是切换命令所指示的小区,还是终端设备根据自己得到的测量报告确定的小区,都既可以是基站1提供的小区,也可以是其他基站(例如基站2)提供的小区。
S48、终端设备执行接入过程。在图4中,以终端设备的目标小区是基站2提供的小区为例。
其中,终端设备的随机接入过程可参考已有的技术,不多赘述。
通过实施本发明实施例提供的小区切换方法,即使在终端设备的条件式切换过程中,网络侧也对终端设备具有控制能力。例如根据实际网络情况,基站可以在终端设备得到条件式判决结果之前下发切换命令,以提前触发终端设备执行切换,从而缩短切换的时延。
在图4所示的实施例中,主要介绍了在终端设备的条件式切换过程中如何增加网络侧对终端设备的控制,下面再通过一个实施例介绍一种小区切换方法,在该实施例中,主要介绍终端设备如何选择目标小区。请参见图5,为该方法的流程图。其中,在下文的介绍过程中,以该方法应用在图1所示的应用场景或图2所示的应用场景为例,且以其中基站1提供的小区1、小区2、或小区3是终端设备切换前的服务小区为例。
S50、基站1向终端设备发送上行配置信息,则终端设备接收该上行配置信息。该上行配置信息用于指示终端设备向基站1发送上行参考信号。具体的,该上行配置信息指示终端设备发送上行参考信号所使用的资源以及发送上行参考信号的周期等信息。
S51、终端设备向基站1发送上行参考信号,则基站1接收终端设备发送的上行参考信号。那么基站1就可以对终端设备发送的上行参考信号进行测量,得到测量报告。
基站1得到测量报告后,可以根据得到的测量报告确定小区标识,这些小区标识就是终端设备能够切换的目标小区的小区标识。
S52、终端设备向基站2发送上行参考信号,则基站2接收终端设备发送的上行参考信号。具体的,基站2接收终端设备发送的上行参考信号,可以是终端设备直接发送的上行参考信号,或者基站2是从基站1中接收的终端设备发送的上行参考信号。那么基站2就可以对终端设备发送的上行参考信号进行测量,得到测量报告。
终端设备发送上行参考信号,除了基站1可能接收之外,其他基站也可能接收,S52就以基站2也接收了终端设备发送的上行参考信号为例。如果基站2对终端设备发送的上行参考信号进行测量得到了测量报告,则基站2可以将得到的测量报告发送给基站1,或者基站2可以将根据基站2得到的测量报告确定的小区标识发送给基站1,这些小区标识就是终端设备能够切换的目标小区的小区标识。
因为基站2可能接收终端设备发送的上行参考信号,也可能接收不到终端设备发送的上行参考信号,因此图5中将表示S52的箭头画为虚线。
S53、终端设备与基站1交互一些用户数据。也就是终端设备与基站1提供的服务小区交互用户数据。
基站1可以根据这些用户数据进行切换判决,这里的切换判决不同于后文中的判决终端设备是否进行小区切换的判决,而是可以理解为判决是否向终端设备发送早切换命令。
S54、基站1与基站2进行配置以及做好HO准备。
例如基站1和基站2进行主动模式参考信号资源预配置以及切换准备。其中,基站2可以将配置信息通知基站1以供终端设备切换。
S55、基站1通过服务小区向终端设备发送早切换命令,则终端设备接收该早切换命令。
该早切换命令就用于指示终端设备判决是否进行小区切换,也就是说,终端设备根据该早切换命令,就知道要进行条件式切换的判决。
该早切换命令可以携带条件式切换的切换条件,终端设备就可以根据该切换条件来进行判决。
另外,该早切换命令还可以携带基站1确定的小区标识和/或基站2确定的小区标识。
其中,图5所示的实施例中的S56可参考图3所示的实施例中的S33,图5所示的实施例中的S57可参考图3所示的实施例中的S34,图5所示的实施例中的S58可参考图3所示的实施例中的S35,不多赘述。需注意的是,因为S56和S57不是必选的步骤,那么为了与必选的步骤相区分,在图5中将用于表示这两个步骤的箭头画为虚线。
S59、终端设备执行接入过程。在图5中,以终端设备的目标小区是基站2提供的小区为例。
终端设备从当前的服务小区切换到目标小区。目标小区是终端设备根据终端设备自己进行测量得到的测量报告确定的,和/或,是终端设备根据接收的基站1发送的小区标识确定的。
作为一种示例,终端设备可以是根据条件式切换确定是否进行小区切换,如果确定进行小区切换,那么终端设备就根据终端设备自己进行测量得到的测量报告和/或根据接收的基站1发送的小区标识来确定目标小区。
作为另一种示例,终端设备可以是根据基站1发送的切换命令确定进行小区切换。如果是这种方式,则基站1根据基站1得到的测量报告和/或接收的基站2发送的测量报告确定终端设备需进行小区切换,则基站1在S59之前会向终端设备发送切换命令,可参考图5中的S60。因为基站1在S55中已经通过早切换命令将小区标识发送给了终端设备,因此基站1在切换命令中可以不再携带小区标识。另外,因为基站1向终端设备发送切换命令只是一种可选的实现方式,不是必须的步骤,因此在图5中将用于表示S60的箭头画为虚线。
终端设备如果接收了基站1发送的切换命令,则终端设备可以停止进行条件式判决,而立刻执行该切换命令。同样的,目标小区还是根据终端设备自己进行测量得到的测量报告和/或根据接收的基站1发送的小区标识来确定。
即,本发明实施例中也涉及到条件式切换和基站通知的切换这两种过程。对于终端设备来说,可以选择执行先触发的切换,例如,终端设备在条件式切换过程中未触发小区切换,而终端设备接收了基站1发送的切换命令,则终端设备就执行切换命令。或者,终端设备在接收基站1发送的切换命令之前就通过条件式切换过程触发了小区切换,那么终端设备就按照条件式切换过程的触发来执行小区切换。
在本发明实施例中,终端设备可以从基站1发送的小区标识和/或终端设备自己确定的小区标识中选择最佳小区作为目标小区,使得目标小区的选择范围更宽泛,更有助于选择到性能较好的小区。
在图4所示的实施例中,主要介绍了在终端设备的条件式切换过程中如何增加网络侧对终端设备的控制,在图5所示的实施例中,主要介绍了终端设备如何选择目标小区。下面再通过一个实施例介绍一种小区切换方法,在该实施例中,主要介绍在条件式切换过程中的终端设备何时发送测量报告。请参见图6,为该方法的流程图。其中,在下文的介绍过程中,以该方法应用在图1所示的应用场景或图2所示的应用场景为例,且以其中基站1提供的小区1、小区2、或小区3是终端设备切换前的服务小区、基站2提供的小区4或小区5是终端设备的目标小区为例。
图6所示的实施例中的S60可参考图3所示的实施例中的S30,图6所示的实施例中的S61可参考图3所示的实施例中的S31,不多赘述。需注意的是,因为S60和S61不是必选的步骤,那么为了与必选的步骤相区分,在图6中将用于表示这两个步骤的箭头画为虚线。
S62、基站1通过服务小区向终端设备发送早切换命令,则终端设备接收该早切换命令。
该早切换命令就用于指示终端设备判决是否进行小区切换,也就是说,终端设备根据该早切换命令,就知道要进行条件式切换的判决。
该早切换命令中还可以携带条件式切换的切换条件,终端设备就可以根据该切换条件来进行判决。
其中,图6所示的实施例中的S63可参考图3所示的实施例中的S33,图6所示的实施例中的S64可参考图3所示的实施例中的S34,图6所示的实施例中的S65可参考图3所示的实施例中的S35,不多赘述。需注意的是,因为S63-S65不是必选的步骤,那么为了与必选的步骤相区分,在图6中将用于表示这三个步骤的箭头画为虚线。
S66、基站1通过服务小区向终端设备发送测量上报信息,则终端设备接收该测量上报信息。该测量上报信息用于指示终端设备将得到的测量报告发送给基站1。
该测量上报消息还可以携带测量报告的上报条件,或者测量报告的上报条件也可以由终端设备自行确定,或根据协议或标准确定。总之,在测量报告的上报条件满足时终端设备才向基站1发送终端设备得到的测量报告。例如,一种测量报告的上报条件为终端设备得到的测量报告在定时器触发(Timer to trigger,TTT)时长内持续满足测量门限。
其中,如果测量报告的上报条件在早切换命令携带的切换条件之前满足,则执行如下 的S67,如果早切换命令携带的切换条件在测量报告的上报条件之前满足,或,早切换命令携带的切换条件与测量报告的上报条件同时满足,则执行如下的S68。
其中,S66可以发生在S62之前,或者发生在S62-S65之间的任意位置,或者发生在S65之后,本发明实施例不作限制。
S67、如果测量报告的上报条件在早切换命令携带的切换条件之前满足,则终端设备向基站1发送测量报告。
这样,基站1接收测量报告后可以根据该测量报告来判决终端设备是否要进行小区切换。
S68、如果早切换命令携带的切换条件在测量报告的上报条件之前满足,或,早切换命令携带的切换条件与测量报告的上报条件同时满足,则终端设备从当前的服务小区切换到目标小区,即终端设备执行接入到基站2的接入过程。即,在这种情况下,终端设备按照条件式切换的判决结果进行小区切换。
通过这种方式,可以使得基站1和/或终端设备都及时判决终端设备是否进行小区切换,从而终端设备可以尽快进行小区切换。
如上的几个实施例介绍的都是终端设备进行小区切换的方法,而终端设备在进行小区切换之后,需要与新小区进行通信,这就涉及到确定终端设备对新小区采用的上行发送功率的问题。下面提供一个实施例,用于介绍终端设备确定上行发送功率的方法。其中,该实施例可以是一个单独的实施例,或者也可与图3所示的实施例-图6所示的实施例中的任意一个实施例结合应用。请参见图7,为该方法的流程图。其中,在下文的介绍过程中,以该方法应用在图1所示的应用场景或图2所示的应用场景为例,且以其中基站1提供的小区1或小区2或小区3是终端设备切换前的服务小区、基站2提供的小区4或小区5是终端设备的目标小区为例。
图7所示的实施例中的S70可参考图5所示的实施例中的S50,不多赘述。
S71、终端设备在切换到基站2之前,向基站2发送上行参考信号,则基站2接收终端设备发送的上行参考信号。此时,终端设备的服务小区还是基站1提供的小区。具体的,基站2接收终端设备发送的上行参考信号,可以是终端设备直接发送的上行参考信号,或者基站2是从基站1中接收的终端设备发送的上行参考信号。
S72、基站2可以根据接收的上行参考信号来得到参考信息,参考信息用于指示终端设备的上行发送功率。
例如,基站2得到的参考信息可以包括偏置和/或上行路损。其中,偏置是在终端设备的初始发送功率基础上的偏置,即,基站2根据接收的上行参考信号可以确定终端设备的初始发送功率,则基站2在该初始发送功率上增加偏置,该初始发送功率与偏置之和就可以作为终端设备切换后的上行发送功率。因为终端设备的初始发送功率终端设备是知晓的,因此基站2只需将偏置发送给终端设备即可。例如,根据偏置确定的终端设备的上行发送功率表示如下:
PPRACH=min{P
CMAX,PREAMBLE_RECEIVED_TARGET_POWER+上行PL+offset}_[dBm] (1)
公式(1)中,PPRACH表示确定的终端设备的上行发送功率,P
CMAX表示终端设备的最大发射功率,PREAMBLE_RECEIVED_TARGET_POWER表示基站2的目标上行接收功 率,PL表示上行路损(Pathloss),offset表示偏置。
而上行路损,是基站2根据从基站1接收的终端设备的上行参考信号的初始发送功率以及基站2对该上行参考信号的接收功率估计得到的。例如上行路损通过如下方式计算:
上行PL=P1-P2 (2)
公式(2)中,P1表示终端设备的上行参考信号的初始发送功率,P2表示基站2对该上行参考信号的接收功率。这样,如果确定的上行路损较大,则终端设备在接入基站2时就应该以较大的上行发送功率来接入,如果确定的上行路损较小,则终端设备在接入基站2时就应该以较小的发射功率来接入。通过这种方式可以较为准确地确定终端设备在切换后的上行发送功率,可以减少终端设备初始接入时因为上行发送功率较低进而执行功率攀升所引入的时延,或者可以减少终端设备初始接入时因为上行发送功率过高所引入的干扰。
另外,终端设备也向基站1发送了上行参考信号,则基站1也可以根据终端设备发送的上行参考信号得到参考信息,不多赘述。
S73、基站2将得到的参考信息发送给基站1,则基站1接收基站2发送的参考信息。
S74、基站1将参考信息发送给终端设备,则终端设备接收基站1发送的参考信息。
例如,基站1通过早切换命令将参考信息发送给终端设备,或者,如果基站向终端设备发送切换命令,则也可以通过切换命令将参考信息发送给终端设备。
其中,基站1发送给终端设备的参考信息,可以包括基站1确定的参考信息和/或基站2确定的参考信息。
S75、终端设备根据接收的参考信息确定在向基站2发送消息时采用的上行发送功率。
在终端设备向基站2切换或者完成切换到基站2之后,基站2就能接收终端设备以该确定的上行发送功率发送的消息。例如终端设备在通过随机接入过程接入基站2时,在发送随机接入过程的第一条消息时应用确定的上行发送功率,或者,终端设备在发送免调度的第一条消息时应用确定的上行发送功率。
本发明实施例中,可以由目标小区来确定终端设备切换后的上行发送功率,使得确定的上行发送功率更为准确。
下面结合附图介绍本发明实施例提供的装置。
图8示出了一种通信装置800的结构示意图。该通信装置800可以实现上文中涉及的终端设备的功能。该通信装置800可以包括处理单元801和接收单元802。可选的,该通信装置800还可以包括发送单元803。其中,处理单元801可以用于执行图3所示的实施例中的S35和S38、图4所示的实施例中的S45和S48,和/或用于支持本文所描述的技术的其它过程。接收单元802可以用于执行图3所示的实施例中的S32、S33、和S34、图4所示的实施例中的S42、S43、S44和S47,和/或用于支持本文所描述的技术的其它过程。发送单元803可以用于执行图3所示的实施例中的S36和S39,和/或用于支持本文所描述的技术的其它过程。其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再赘述。
图9示出了一种通信装置900的结构示意图。该通信装置900可以实现上文中涉及的网络设备的功能。该通信装置900可以包括处理单元901和发送单元902。可选的,该通信装置900还可以包括接收单元903。其中,处理单元901可以用于执行图4所示的实施例中的S46,和/或用于支持本文所描述的技术的其它过程。发送单元902可以用于执行图 3所示的实施例中的S32、S33和S37,图4所示的实施例中的S42和S47,和/或用于支持本文所描述的技术的其它过程。接收单元903可以用于执行图3所示的实施例中的S36和S39,和/或用于支持本文所描述的技术的其它过程。其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再赘述。
图10示出了一种通信装置1000的结构示意图。该通信装置1000可以实现上文中涉及的终端设备的功能。该通信装置1000可以包括处理单元1001和接收单元1002。其中,处理单元1001可以用于执行图5所示的实施例中的S59,和/或用于支持本文所描述的技术的其它过程。接收单元1002可以用于执行图5所示的实施例中的S55和S60,和/或用于支持本文所描述的技术的其它过程。其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再赘述。
图11示出了一种通信装置1100的结构示意图。该通信装置1100可以实现上文中涉及的网络设备的功能。该通信装置1100可以包括处理单元1101、接收单元1102和发送单元1103。其中,处理单元1101可以用于执行图5所示的实施例中的S51和S53,和/或用于支持本文所描述的技术的其它过程。接收单元1102可以用于执行图5所示的实施例中的S51,和/或用于支持本文所描述的技术的其它过程。发送单元1103可以用于执行图5所示的实施例中的S55和S60,和/或用于支持本文所描述的技术的其它过程。其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再赘述。
图12示出了一种通信装置1200的结构示意图。该通信装置1200可以实现上文中涉及的网络设备的功能。该通信装置1200可以包括处理单元1201和发送单元1202。可选的,通信装置1200还包括接收单元1203。其中,处理单元1201可以用于执行图7所示的实施例中的S72,和/或用于支持本文所描述的技术的其它过程。发送单元1202可以用于执行图7所示的实施例中的S73,和/或用于支持本文所描述的技术的其它过程。接收单元1203可以用于执行图7所示的实施例中的S71,和/或用于支持本文所描述的技术的其它过程。其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再赘述。
图13示出了一种通信装置1300的结构示意图。该通信装置1300可以实现上文中涉及的终端设备的功能。该通信装置1300可以包括处理单元1301和接收单元1302。可选的,通信装置1300还包括发送单元1303。其中,处理单元1301可以用于执行图7所示的实施例中的S75,和/或用于支持本文所描述的技术的其它过程。接收单元1302可以用于执行图7所示的实施例中的S74,和/或用于支持本文所描述的技术的其它过程。发送单元1303可以用于执行图7所示的实施例中的S71,和/或用于支持本文所描述的技术的其它过程。其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再赘述。
图14示出了一种通信装置1400的结构示意图。该通信装置1400可以实现上文中涉及的终端设备的功能。该通信装置1400可以包括发送单元1401和接收单元1402。可选的,通信装置1400还包括处理单元1403。其中,发送单元1401可以用于执行图6所示的实施例中的S67,和/或用于支持本文所描述的技术的其它过程。接收单元1402可以用于执行图6所示的实施例中的S62和S66,和/或用于支持本文所描述的技术的其它过程。处理单元1403可以用于执行图6所示的实施例中的S68,和/或用于支持本文所描述的技术的其 它过程。其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再赘述。
在本发明实施例中,通信装置800~通信装置1400对应各个功能划分各个功能模块的形式来呈现,或者,可以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定应用集成电路(application-specific integrated circuit,ASIC),执行一个或多个软件或固件程序的处理器和存储器,集成逻辑电路,和/或其他可以提供上述功能的器件。
在一个简单的实施例中,本领域的技术人员可以想到,还可以将通信装置800~通信装置1400中的任意一个通信装置通过如图15所示的结构实现。
如图15所示,通信装置1500可以包括:存储器1501、处理器1502、***总线1503以及通信接口1504。其中,处理器1502、存储器1501以及通信接口1504通过***总线1503连接。存储器1501用于存储计算机执行指令,当通信装置1500运行时,处理器1502执行存储器1501存储的计算机执行指令,以使通信装置1500执行图3所示的实施例至图7所示的实施例中的任意一个实施例提供的方法。具体的方法可参考上文及附图中的相关描述,此处不再赘述。其中,通信接口1504可以是收发器,或者是独立的接收器和发送器。
在一个示例中,接收单元802可以对应图15中的通信接口1504。处理单元801可以以硬件形式/软件形式内嵌于或独立于通信装置1500的存储器1501中。
在一个示例中,发送单元902可以对应图15中的通信接口1504。处理单元901可以以硬件形式/软件形式内嵌于或独立于通信装置1500的存储器1501中。
在一个示例中,接收单元1002可以对应图15中的通信接口1504。处理单元1001可以以硬件形式/软件形式内嵌于或独立于通信装置1500的存储器1501中。
在一个示例中,接收单元1102和发送单元1103可以对应图15中的通信接口1504。处理单元1101可以以硬件形式/软件形式内嵌于或独立于通信装置1500的存储器1501中。
在一个示例中,发送单元1202可以对应图15中的通信接口1504。处理单元1201可以以硬件形式/软件形式内嵌于或独立于通信装置1500的存储器1501中。
在一个示例中,接收单元1302可以对应图15中的通信接口1504。处理单元1301可以以硬件形式/软件形式内嵌于或独立于通信装置1500的存储器1501中。
在一个示例中,接收单元1402和发送单元1401可以对应图15中的通信接口1504。处理单元1403可以以硬件形式/软件形式内嵌于或独立于通信装置1500的存储器1501中。
可选的,通信装置1500可以是现场可编程门阵列(field-programmable gate array,FPGA),专用集成芯片(application specific integrated circuit,ASIC),***芯片(system on chip,SoC),中央处理器(central processor unit,CPU),网络处理器(network processor,NP),数字信号处理电路(digital signal processor,DSP),微控制器(micro controller unit,MCU),还可以采用可编程控制器(programmable logic device,PLD)或其他集成芯片。或者,通信装置1500也可以是单独的网元,例如为网络设备或者终端设备。
由于本发明实施例提供的通信装置800~通信装置1400可用于执行图3所示的实施例至图7所示的实施例中的任意一个实施例提供的方法,因此其所能获得的技术效果可参考上述方法实施例,在此不再赘述。
本发明实施例中,终端设备也能根据网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,即终端设备依然可以对源小区和目标小区进行测量,然而,网络设 备依然可能向终端设备发送切换命令,如果终端设备接收了网络设备发送的切换命令,则终端设备会通过执行该切换命令进行小区切换。可见,网络设备对终端设备具有控制能力,不会因为完全由终端设备判决是否切换而导致网络设备对终端设备失去控制。而且,如果目标基站为待切换的终端设备预留了资源,则网络设备可以在综合考虑各种因素之后确定是否向终端设备发送切换命令,尽量使得终端设备能够进行小区切换,避免资源的浪费。
本发明实施例是参照根据本发明实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如,固态硬盘(Solid State Disk,SSD))等。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本发明实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。
Claims (52)
- 一种小区切换方法,其特征在于,包括:终端设备接收网络设备发送的早切换命令,所述早切换命令用于指示所述终端设备判决是否进行小区切换;所述终端设备对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,根据得到的测量报告以及所述早切换命令携带的切换条件判决是否进行小区切换;若所述终端设备接收到所述网络设备发送的切换命令,则所述终端设备执行所述切换命令,以从当前的服务小区切换到目标小区。
- 如权利要求1所述的方法,其特征在于,所述方法还包括:若所述终端设备未接收到所述网络设备发送的切换命令,则所述终端设备根据所述得到的测量报告以及所述切换条件判决是否进行小区切换。
- 如权利要求1所述的方法,其特征在于,在若所述终端设备接收到所述网络设备发送的切换命令,则所述终端设备执行所述切换命令,以从当前的服务小区切换到目标小区之前,还包括:所述终端设备根据所述得到的测量报告以及所述切换条件判决进行小区切换。
- 如权利要求1-3任一所述的方法,其特征在于,所述方法还包括:所述终端设备将对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量得到的所述测量报告发送给所述网络设备,所述测量报告用于所述网络设备判决所述终端设备是否要进行小区切换。
- 如权利要求1-4任一所述的方法,其特征在于,所述方法还包括:所述终端设备接收所述网络设备发送的上行配置信息;所述终端设备根据所述上行配置信息向所述网络设备发送上行参考信号,所述上行参考信号用于所述网络设备判决所述终端设备是否要进行小区切换。
- 如权利要求1-5任一所述的方法,其特征在于,所述方法还包括:所述终端设备接收所述网络设备发送的切换取消命令,所述切换取消命令用于取消所述早切换命令配置的所述终端设备判决所述终端设备是否进行小区切换的功能;所述终端设备执行所述切换取消命令,以取消判决所述终端设备是否进行小区切换。
- 如权利要求1所述的方法,其特征在于,所述目标小区为所述终端设备通过对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量确定的,或,所述目标小区为所述切换命令指示的。
- 一种小区切换方法,其特征在于,包括:网络设备向终端设备发送早切换命令,所述早切换命令用于指示所述终端设备判决是否进行小区切换;所述网络设备判决所述终端设备是否进行小区切换;若所述网络设备确定所述终端设备需进行小区切换,则所述网络设备向所述终端设备发送切换命令,所述切换命令用于指示所述终端设备进行小区切换。
- 如权利要求8所述的方法,其特征在于,所述方法还包括:所述网络设备向所述终端设备发送上行配置信息,所述上行配置信息用于所述终端设 备向所述网络设备发送上行参考信号;所述网络设备接收所述终端设备发送的所述上行参考信号;所述网络设备对所述上行参考信号进行测量,得到测量报告;所述网络设备判决所述终端设备是否进行小区切换,包括:所述网络设备根据得到的测量报告判决所述终端设备是否进行小区切换。
- 如权利要求8所述的方法,其特征在于,所述方法还包括:所述网络设备接收所述终端设备发送的测量报告,所述测量报告为所述终端设备对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量得到的;所述网络设备判决所述终端设备是否进行小区切换,包括:所述网络设备根据接收的测量报告判决所述终端设备是否进行小区切换。
- 如权利要求8所述的方法,其特征在于,所述网络设备判决所述终端设备是否进行小区切换,包括:若所述网络设备中设置的定时器超时,则所述网络设备判决所述终端设备进行小区切换。
- 如权利要求8-11任一所述的方法,其特征在于,所述方法还包括:所述网络设备向所述终端设备发送切换取消命令,所述切换取消命令用于指示所述终端设备停止判决是否进行小区切换。
- 如权利要求8-12任一所述的方法,其特征在于,所述切换命令携带小区标识,所述小区标识为所述终端设备能够切换的小区的标识。
- 一种小区切换方法,其特征在于,包括:终端设备接收网络设备发送的早切换命令,所述早切换命令用于指示所述终端设备判决是否进行小区切换,所述早切换命令携带小区标识,所述小区标识为所述网络设备根据对所述终端设备发送的上行信号进行测量确定的,所述小区标识为所述终端设备能够切换的小区的标识;所述终端设备对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,根据得到的测量结果以及所述早切换命令携带的切换条件确定是否进行小区切换;所述终端设备从当前的服务小区切换到目标小区,所述目标小区为所述终端设备根据所述得到的测量报告和/或接收的所述小区标识确定的。
- 如权利要求14所述的方法,其特征在于,若所述目标小区为所述终端设备根据接收的小区标识确定的,则在所述终端设备从当前的服务小区切换到目标小区之前,还包括:所述终端设备接收所述网络设备发送的切换命令,所述切换命令用于指示所述终端设备进行小区切换。
- 一种小区切换方法,其特征在于,包括:网络设备接收终端设备发送的上行参考信号;所述网络设备对所述上行参考信号进行测量,得到测量报告;所述网络设备根据所述测量报告确定小区标识,所述小区标识为所述终端设备能够切换的小区的标识;所述网络设备向终端设备发送早切换命令,所述早切换命令用于指示所述终端设备判 决是否进行小区切换,所述早切换命令携带所述小区标识。
- 如权利要求16所述的方法,其特征在于,所述方法还包括:所述网络设备向所述终端设备发送切换命令,所述切换命令用于指示所述终端设备进行小区切换。
- 一种确定上行发送功率的方法,其特征在于,包括:在终端设备切换到目的网络设备之前,所述目的网络设备确定所述终端设备的上行发送功率;所述目的网络设备向所述终端设备当前接入的源网络设备发送参考信息,所述参考信息用于指示所述终端设备的上行发送功率。
- 如权利要求18所述的方法,其特征在于,所述参考信息包括偏置和/或上行路损;所述偏置为在所述终端设备的初始发送功率基础上的偏置,所述上行路损为所述终端设备到所述目的网络设备之间的路损。
- 如权利要求18或19所述的方法,其特征在于,所述目的网络设备确定所述终端设备的上行发送功率,包括:所述目的网络设备接收所述终端设备发送的上行参考信号;所述目的网络设备根据所述上行参考信号的发送功率确定所述上行发送功率。
- 如权利要求18-20任一所述的方法,其特征在于,所述方法还包括:在所述终端设备切换到所述目的网络设备后,所述目的网络设备接收所述终端设备通过所述上行发送功率发送的消息。
- 一种确定上行发送功率的方法,其特征在于,包括:终端设备在切换到目的网络设备之前,接收源网络设备发送的参考信息,所述参考信息用于指示所述终端设备向所述目的网络设备发送消息的上行发送功率;所述终端设备根据所述参考信息确定所述终端设备在向所述目的网络设备发送消息时的上行发送功率。
- 如权利要求22所述的方法,其特征在于,所述参考信息包括偏置和/或上行路损;所述偏置为在所述终端设备的初始发送功率基础上的偏置,所述上行路损为所述终端设备到所述目的网络设备之间的路损。
- 如权利要求22或23所述的方法,其特征在于,所述方法还包括:在所述终端设备切换到所述目的网络设备后,所述终端设备以所述上行发送功率向所述目的网络设备发送消息。
- 一种小区切换方法,其特征在于,包括:终端设备接收网络设备发送的早切换命令,所述早切换命令用于指示所述终端设备判决是否进行小区切换;若测量报告的上报条件在所述早切换命令携带的切换条件之前被满足,则所述终端设备向所述网络设备发送所述测量报告,其中,所述测量报告是所述终端设备对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量得到的。
- 如权利要求25所述的方法,其特征在于,所述方法还包括:若所述早切换命令携带的切换条件在所述测量报告的上报条件之前被满足,或,所述早切换命令携带的切换条件与所述测量报告的上报条件同时被满足,则所述终端设备从当前的服务小区切换到目标小区。
- 一种通信装置,其特征在于,包括:接收单元,用于接收网络设备发送的早切换命令,所述早切换命令用于指示所述通信装置判决是否进行小区切换;处理单元,用于对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,根据得到的测量报告以及所述早切换命令携带的切换条件判决是否进行小区切换;所述处理单元,还用于若所述接收单元接收到所述网络设备发送的切换命令,则执行所述切换命令,以从当前的服务小区切换到目标小区。
- 如权利要求27所述的装置,其特征在于,所述处理单元还用于:若所述接收单元未接收到所述网络设备发送的切换命令,则根据所述得到的测量报告以及所述切换条件判决是否进行小区切换。
- 如权利要求27所述的装置,其特征在于,所述处理单元还用于:在若所述接收单元接收到所述网络设备发送的切换命令,则执行所述切换命令,以从当前的服务小区切换到目标小区之前,根据所述得到的测量报告以及所述切换条件判决进行小区切换。
- 如权利要求27-29任一所述的装置,其特征在于,所述装置还包括发送单元,用于将所述处理单元对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量得到的所述测量报告发送给所述网络设备,所述测量报告用于所述网络设备判决所述通信装置是否要进行小区切换。
- 如权利要求27-30任一所述的装置,其特征在于,所述装置还包括发送单元;所述接收单元还用于:接收所述网络设备发送的上行配置信息;所述发送单元用于:根据所述上行配置信息向所述网络设备发送上行参考信号,所述上行参考信号用于所述网络设备判决所述通信装置是否要进行小区切换。
- 如权利要求27-31任一所述的装置,其特征在于,所述接收单元还用于:接收所述网络设备发送的切换取消命令,所述切换取消命令用于取消所述早切换命令配置的所述通信装置判决所述终端设备是否进行小区切换的功能;所述处理单元还用于:执行所述切换取消命令,以取消判决所述通信装置是否进行小区切换。
- 如权利要求27所述的装置,其特征在于,所述目标小区为所述通信装置通过对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量确定的,或,所述目标小区为所述切换命令指示的。
- 一种通信装置,其特征在于,包括:发送单元,用于向终端设备发送早切换命令,所述早切换命令用于指示所述终端设备判决是否进行小区切换;处理单元,用于判决所述终端设备是否进行小区切换;所述发送单元,还用于若所述处理单元确定所述终端设备需进行小区切换,则向所述终端设备发送切换命令,所述切换命令用于指示所述终端设备进行小区切换。
- 如权利要求34所述的装置,其特征在于,所述装置还包括接收单元;所述发送单元还用于:向所述终端设备发送上行配置信息,所述上行配置信息用于所述终端设备向所述通信装置发送上行参考信号;所述接收单元用于:接收所述终端设备发送的所述上行参考信号;所述处理单元还用于:对所述上行参考信号进行测量,得到测量报告;所述处理单元判决所述终端设备是否进行小区切换,包括:根据得到的测量报告判决所述终端设备是否进行小区切换。
- 如权利要求34所述的装置,其特征在于,所述装置还包括接收单元;所述接收单元用于:接收所述终端设备发送的测量报告,所述测量报告为所述终端设备对所述通信装置发送的下行信号和/或其他通信装置发送的下行信号进行测量得到的;所述处理单元判决所述终端设备是否进行小区切换,包括:根据接收的测量报告判决所述终端设备是否进行小区切换。
- 如权利要求34所述的装置,其特征在于,所述处理单元判决所述终端设备是否进行小区切换,包括:若所述通信装置中设置的定时器超时,则判决所述终端设备进行小区切换。
- 如权利要求34-37任一所述的装置,其特征在于,所述发送单元还用于:向所述终端设备发送切换取消命令,所述切换取消命令用于指示所述终端设备停止判决是否进行小区切换。
- 如权利要求34-38任一所述的装置,其特征在于,所述切换命令携带小区标识,所述小区标识为所述终端设备能够切换的小区的标识。
- 一种通信装置,其特征在于,包括:接收单元,用于接收网络设备发送的早切换命令,所述早切换命令用于指示所述通信装置判决是否进行小区切换,所述早切换命令携带小区标识,所述小区标识为所述网络设备根据对所述通信装置发送的上行信号进行测量确定的,所述小区标识为所述通信装置能够切换的小区的标识;处理单元,用于对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量,根据得到的测量结果以及所述早切换命令携带的切换条件确定是否进行小区切换;所述处理单元,还用于从当前的服务小区切换到目标小区,所述目标小区为所述通信装置根据所述得到的测量报告和/或接收的所述小区标识确定的。
- 如权利要求40所述的装置,其特征在于,所述接收单元还用于:若所述目标小区为所述通信装置根据接收的小区标识确定的,则在所述通信装置从当前的服务小区切换到目标小区之前,接收所述网络设备发送的切换命令,所述切换命令用于指示所述通信装置进行小区切换。
- 一种通信装置,其特征在于,包括:接收单元,用于接收终端设备发送的上行参考信号;处理单元,用于对所述上行参考信号进行测量,得到测量报告;所述处理单元,还用于根据所述测量报告确定小区标识,所述小区标识为所述终端设备能够切换的小区的标识;发送单元,用于向终端设备发送早切换命令,所述早切换命令用于指示所述终端设备判决是否进行小区切换,所述早切换命令携带所述小区标识。
- 如权利要求42所述的装置,其特征在于,所述发送单元还用于:向所述终端设备发送切换命令,所述切换命令用于指示所述终端设备进行小区切换。
- 一种通信装置,其特征在于,包括:处理单元,用于在终端设备切换到所述通信装置之前,确定所述终端设备的上行发送功率;发送单元,用于向所述终端设备当前接入的源网络设备发送参考信息,所述参考信息用于指示所述终端设备的上行发送功率。
- 如权利要求44所述的装置,其特征在于,所述参考信息包括偏置和/或上行路损;所述偏置为在所述终端设备的初始发送功率基础上的偏置,所述上行路损为所述终端设备到所述通信装置之间的路损。
- 如权利要求44或45所述的方法,其特征在于,所述装置还包括接收单元;所述处理单元确定所述终端设备的上行发送功率,包括:通过所述接收单元接收所述终端设备发送的上行参考信号;根据所述上行参考信号的发送功率确定所述上行发送功率。
- 如权利要求44-46任一所述的方法,其特征在于,所述装置还包括接收单元,用于:在所述终端设备切换到所述通信装置后,接收所述终端设备通过所述上行发送功率发送的消息。
- 一种通信装置,其特征在于,包括:接收单元,用于在切换到目的网络设备之前,接收源网络设备发送的参考信息,所述参考信息用于指示所述通信装置向所述目的网络设备发送消息的上行发送功率;处理单元,用于根据所述参考信息确定所述通信装置在向所述目的网络设备发送消息时的上行发送功率。
- 如权利要求48所述的装置,其特征在于,所述参考信息包括偏置和/或上行路损;所述偏置为在所述通信装置的初始发送功率基础上的偏置,所述上行路损为所述通信装置到所述目的网络设备之间的路损。
- 如权利要求48所述的装置,其特征在于,所述装置还包括发送单元,用于:在所述通信装置切换到所述目的网络设备后,以所述上行发送功率向所述目的网络设备发送消息。
- 一种通信装置,其特征在于,包括:接收单元,用于接收网络设备发送的早切换命令,所述早切换命令用于指示所述通信装置判决是否进行小区切换;发送单元,用于若测量报告的上报条件在所述早切换命令携带的切换条件之前被满足,则向所述网络设备发送所述测量报告,其中,所述测量报告是所述通信装置对所述网络设备发送的下行信号和/或其他网络设备发送的下行信号进行测量得到的。
- 如权利要求51所述的装置,其特征在于,所述装置还包括处理单元,用于:若所述早切换命令携带的切换条件在所述测量报告的上报条件之前被满足,或,所述早切换命令携带的切换条件与所述测量报告的上报条件同时被满足,则从当前的服务小区切换到目标小区。
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Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111557110A (zh) * | 2018-01-08 | 2020-08-18 | 联想(北京)有限公司 | 用于ue切换的方法和装置 |
CN110149663A (zh) | 2018-02-13 | 2019-08-20 | 维沃移动通信有限公司 | 条件切换取消方法及通信设备 |
WO2019157726A1 (zh) * | 2018-02-14 | 2019-08-22 | Oppo广东移动通信有限公司 | 资源上报的方法、终端设备和网络设备 |
CN113597786A (zh) * | 2019-01-11 | 2021-11-02 | 日本电气株式会社 | 无线电接入网节点和无线电终端及其方法 |
CN111107593B (zh) * | 2019-01-23 | 2022-07-29 | 维沃移动通信有限公司 | 一种用于链路失败恢复的方法、用户侧设备和网络侧设备 |
CN112789884B (zh) * | 2019-03-19 | 2023-10-13 | Oppo广东移动通信有限公司 | 一种小区切换的处理方法、设备及存储介质 |
US12010570B2 (en) * | 2019-06-14 | 2024-06-11 | Xiaomi Communications Co., Ltd. | Method and device for establishing aggregated connection |
CN112087755B (zh) * | 2019-06-14 | 2022-06-14 | 华为技术有限公司 | 一种小区切换方法、通信装置及*** |
CN112105064B (zh) * | 2019-06-17 | 2022-09-13 | ***通信有限公司研究院 | 切换方法、指示方法、终端及网络侧设备 |
CN112243274B (zh) * | 2019-07-17 | 2021-10-22 | 大唐移动通信设备有限公司 | 一种基于时间的定时切换处理方法及装置 |
US20220256405A1 (en) * | 2019-07-30 | 2022-08-11 | Nokia Solutions And Networks Oy | UE Logging During Handover |
WO2021016856A1 (en) * | 2019-07-30 | 2021-02-04 | Zte Corporation | Wireless communication method for mobility control |
EP4024952A4 (en) * | 2019-08-30 | 2022-08-31 | Huawei Technologies Co., Ltd. | COMMUNICATION METHOD AND DEVICE |
CN114631396A (zh) * | 2019-10-01 | 2022-06-14 | Idac控股公司 | 具有多连接的条件移动性 |
CN112788723B (zh) * | 2019-11-08 | 2022-08-09 | 华为技术有限公司 | 功率控制的方法和装置 |
EP4068849B1 (en) * | 2019-12-25 | 2024-03-27 | Huawei Technologies Co., Ltd. | Communication method and device |
CN117715166A (zh) * | 2020-06-22 | 2024-03-15 | 华为技术有限公司 | 功率控制方法及装置 |
CN111786764B (zh) * | 2020-06-30 | 2022-08-26 | 中国联合网络通信集团有限公司 | 主载波选择方法、***、终端设备及计算机可读存储介质 |
WO2023027311A1 (ko) * | 2021-08-25 | 2023-03-02 | 엘지전자 주식회사 | 무선 통신 시스템에서 핸드오버를 수행하기 위한 장치 및 방법 |
CN117135654B (zh) * | 2023-02-14 | 2024-06-04 | 荣耀终端有限公司 | 语音业务的建立方法和电子设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150045040A1 (en) * | 2013-08-12 | 2015-02-12 | Telefonaktiebolaget L M Ericsson (Publ) | Handover improvement for high speed user equipment in lte |
WO2015032188A1 (zh) * | 2013-09-09 | 2015-03-12 | 华为技术有限公司 | 小区的切换方法、终端和网络设备 |
CN106454961A (zh) * | 2015-08-07 | 2017-02-22 | 中国电信股份有限公司 | 用于灵活带宽的小区切换方法、***以及设备 |
CN106454876A (zh) * | 2015-08-07 | 2017-02-22 | 中国电信股份有限公司 | 用于灵活带宽的小区测量方法、***以及设备 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101453745B (zh) * | 2007-11-29 | 2012-09-19 | 电信科学技术研究院 | 一种小区切换过程中的测量方法、透明中继及基站 |
CN101873657B (zh) * | 2009-04-23 | 2014-12-10 | 中兴通讯股份有限公司 | 一种估算邻区上行信号质量的方法和切换优化方法 |
CN101932052B (zh) | 2009-06-23 | 2016-08-24 | 华为技术有限公司 | 一种切换方法、用户终端及网络侧设备 |
US9591545B2 (en) * | 2011-08-12 | 2017-03-07 | Panasonic Intellectual Property Corporation Of America | Handover control method, wireless communication terminal, and wireless communication device |
KR101571878B1 (ko) * | 2012-12-14 | 2015-12-04 | 주식회사 케이티 | 핸드오버 제어 방법 |
EP2950587A4 (en) * | 2013-01-25 | 2016-07-27 | Fujitsu Ltd | TRANSMISSION PROCEDURE BASED ON A UPLINK SIGNAL, METHOD FOR CONFIGURING A UPLINK SIGNAL, USER DEVICE AND BASE STATION |
WO2014142725A1 (en) * | 2013-03-15 | 2014-09-18 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and apparatuses for handling a handover event |
CN104202758B (zh) * | 2014-09-04 | 2018-01-26 | 北京北方烽火科技有限公司 | 小区联合调度方法及装置 |
US9398509B1 (en) * | 2015-01-07 | 2016-07-19 | Verizon Patent And Licensing Inc. | Dynamic hand-over parameter control |
CN105101247B (zh) * | 2015-09-01 | 2018-08-03 | 重庆邮电大学 | 基于切换类型特定权重的移动状态估计增强方法及装置 |
CN111557110A (zh) | 2018-01-08 | 2020-08-18 | 联想(北京)有限公司 | 用于ue切换的方法和装置 |
-
2017
- 2017-04-28 CN CN201710296457.5A patent/CN108810960B/zh active Active
-
2018
- 2018-04-23 EP EP18790488.3A patent/EP3609224A4/en active Pending
- 2018-04-23 WO PCT/CN2018/084058 patent/WO2018196710A1/zh unknown
-
2019
- 2019-10-25 US US16/664,451 patent/US11323943B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150045040A1 (en) * | 2013-08-12 | 2015-02-12 | Telefonaktiebolaget L M Ericsson (Publ) | Handover improvement for high speed user equipment in lte |
WO2015032188A1 (zh) * | 2013-09-09 | 2015-03-12 | 华为技术有限公司 | 小区的切换方法、终端和网络设备 |
CN106454961A (zh) * | 2015-08-07 | 2017-02-22 | 中国电信股份有限公司 | 用于灵活带宽的小区切换方法、***以及设备 |
CN106454876A (zh) * | 2015-08-07 | 2017-02-22 | 中国电信股份有限公司 | 用于灵活带宽的小区测量方法、***以及设备 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3609224A4 |
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