CN113498136B

CN113498136B - Measuring method and device

Info

Publication number: CN113498136B
Application number: CN202010269795.1A
Authority: CN
Inventors: 李红; 韩静; 魏璟鑫
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2022-12-27
Anticipated expiration: 2040-04-08
Also published as: CN113498136A

Abstract

The application provides a measurement method and a measurement device, relates to the technical field of communication, and can ensure that terminal equipment controls uplink power of a source cell and uplink power of a target cell during DAPS cell switching, and avoid transmission interruption between the terminal equipment and the source cell and transmission interruption between the terminal equipment and the target cell. The method comprises the following steps: the terminal equipment receives a first signaling; the first signaling is used for instructing the terminal equipment to execute the DAPS cell handover of the dual activation protocol stack. During the period of switching the cells according to the first signaling, the terminal equipment performs RRM measurement of the first carrier and the second carrier; the first carrier is the carrier where the source cell is located, and the second carrier is the carrier where the target cell is located; the source cell is a cell for providing service for the terminal equipment before cell switching, and the target cell is a cell for providing service for the terminal equipment after cell switching.

Description

Measuring method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a measurement method and apparatus.

Background

With the development of communication technology, the mobility of terminal equipment is enhanced, and a Dual Active Protocol Stack (DAPS) cell switching method is provided based on the enhanced mobility. During the cell switching period, the terminal equipment is connected with the source cell and the target cell, so that the connection between the terminal equipment and the network equipment is prevented from being interrupted.

During the DAPS cell handover, since the terminal device needs to process the transceiving signals of the source cell and the target cell at the same time, the uplink powers of the source cell and the target cell need to be adjusted to ensure that the sum of the uplink powers of the source cell and the target cell does not exceed the maximum transmitting power of the terminal device. The uplink power may be obtained according to Path Loss (PL), where PL is a difference between Reference Signal Power (RSP) and higher layer filtered (higher layer filtered) Reference Signal Received Power (RSRP). Therefore, after obtaining the reference signal power, the terminal device may obtain the higher layer filtering reference signal received powers (which may also be referred to as L3 RSRP) of the source cell and the target cell through Radio Resource Management (RRM) measurement. And then the current uplink power is obtained, and the uplink power is controlled.

In the prior art, there is no specific specification for RRM measurement behavior of the terminal device during cell handover. If the terminal device does not perform RRM measurement, the uplink power cannot be controlled. If the terminal device performs RRM measurement, it needs to disconnect the connection with the source cell and the target cell, and does not transmit and receive signals any more, and adjust the radio frequency link, so that the different-frequency RRM measurement or the different-system RRM measurement can be performed, which results in the interruption of the transmission between the terminal device and the source cell and the target cell.

Disclosure of Invention

Embodiments of the present application provide a measurement method and apparatus, which can ensure that a terminal device controls uplink powers of a source cell and a target cell during a DAPS cell handover, and avoid transmission interruption between the terminal device and the source cell and the target cell.

In order to achieve the purpose, the following technical scheme is adopted in the application:

in a first aspect, the present application provides a measurement method, which may include: the terminal equipment receives a first signaling; the first signaling is used for instructing the terminal equipment to execute DAPS cell handover of a dual activation protocol stack. During the period of switching the cells according to the first signaling, the terminal equipment performs RRM measurement of the first carrier and the second carrier; the first carrier is a carrier where a source cell is located, and the second carrier is a carrier where a target cell is located; the source cell is a cell for providing service for the terminal equipment before cell switching, and the target cell is a cell for providing service for the terminal equipment after cell switching.

And the terminal equipment keeps connection with both the source cell and the target cell during the cell switching according to the first signaling, and the source cell and the target cell are both serving cells of the terminal equipment. Then, the terminal device does not need to adjust the radio frequency link when performing RRM measurement on the first carrier and the second carrier, and transmission interruption due to disconnection between the terminal device and the source cell and the target cell caused by RRM measurement is avoided.

Therefore, the terminal device can ensure that RRM measurement can be performed during the DAPS cell switching, and uplink power is controlled through RRM measurement results, so that the sum of the uplink power of the source cell and the uplink power of the target cell does not exceed the maximum transmission power of the terminal device. And, during cell handover, transmission interruptions with the source cell and the target cell are avoided.

In one possible implementation manner, the performing, by the terminal device, RRM measurement of the first carrier and the second carrier includes: the terminal device performs a first RRM measurement for the source cell and a second RRM measurement for the target cell.

And the adjacent cell with the carrier wave being the first carrier wave or the second carrier wave also exists in the adjacent cell corresponding to the terminal equipment. Then, performing the RRM measurement of the first carrier refers to performing the RRM measurement on the cell having the same carrier as the first carrier in the source cell and the neighboring cell. Alternatively, RRM measurements are only allowed for the source cell.

Similarly, performing the RRM measurement of the second carrier refers to performing the RRM measurement on the target cell and the cell in the neighboring cell having the same carrier as the second carrier. Alternatively, RRM measurements are only allowed for the target cell.

Thus, the RRM measurement is performed only on the source cell and the target cell, so that the RRM measurement can be performed without interrupting transmission with the network device during cell handover of the terminal device, and the measurement resource can be further saved.

In one possible implementation, the first carrier and the second carrier are the same or different.

It can be understood that the source cell and the target cell are both serving cells of the terminal device, and then two radio frequency links in the terminal device are connected to the source cell and the target cell respectively to ensure signal transmission. Or, a radio frequency link which can cover the source cell and the target cell is connected with the source cell and the target cell in the terminal equipment, so that signal transmission is ensured.

Then, even if the first carrier and the second carrier are different, no adjustment of the radio frequency link is necessary. That is, during cell handover, the first carrier and the second carrier are different, which does not cause the terminal device and the network device to interrupt transmission.

In a possible implementation manner, the first carrier and the second carrier are different, and the performing, by the terminal device, RRM measurement of the first carrier and the second carrier includes: the terminal device performs first RRM measurement on the source cell and the first cell, and performs second RRM measurement on the target cell and the second cell. The carrier where the first cell is located is a first carrier, and the carrier where the second cell is located is a second carrier.

That is to say, when performing RRM measurement on the first carrier and the second carrier, the terminal device does not need to further distinguish the source cell, the target cell, and the neighboring cell, and only needs to perform measurement on the cell corresponding to the current serving carrier.

In a possible implementation manner, the first carrier and the second carrier are the same, and the performing, by the terminal device, RRM measurement of the first carrier and the second carrier includes: the terminal equipment carries out third RRM measurement on the source cell, the target cell and a third cell; and the carrier where the third cell is located is the first carrier or the second carrier.

In one possible implementation, the method further includes: the terminal equipment acquires carrier information; the carrier information includes one or more of the following items: and measuring the central frequency point, the subcarrier interval, the bandwidth and the initial frequency domain position.

For different communication systems, the method for the terminal device to determine whether different cells correspond to the same carrier is different. For example, when the terminal device is located in the LTE communication system, the carriers with the same measurement center frequency point are the same carriers. As another example, the terminal device is located in a 5G NR communication system and is an SSB-based measurement. The carriers with the same measurement center frequency point and the same source cell are the same carriers. As another example, the current terminal device is located in a 5G NR communication system and is CSI-RS based measurement. The terminal equipment needs to obtain the measurement center frequency point through calculation according to the initial frequency domain position and the bandwidth. The carriers with the same measurement center frequency point, subcarrier interval and bandwidth are the same carriers.

Then, in different communication systems, the terminal device must determine the cell corresponding to the carrier where RRM measurement needs to be performed, through the corresponding information in the carrier information.

In a possible implementation manner, the first carrier and the second carrier are different, the carrier information includes a measurement center frequency point, and the method further includes: and the terminal equipment determines a first cell which is the same as the measurement center frequency point of the source cell according to the carrier information, and performs first RRM measurement on the source cell and the first cell. And the terminal equipment determines a second cell which is the same as the measurement center frequency point of the target cell according to the carrier information, and performs second RRM measurement on the target cell and the second cell.

In a possible implementation manner, the first carrier and the second carrier are different, the carrier information includes a measurement center frequency and a subcarrier interval, and the method further includes: and the terminal equipment determines a first cell with the same measurement center frequency point and subcarrier interval as those of the source cell according to the carrier information, and performs first RRM measurement on the source cell and the first cell. And the terminal equipment determines a second cell with the same measurement center frequency point and subcarrier interval as those of the target cell according to the carrier information, and performs second RRM measurement on the target cell and the second cell.

In one possible implementation, the first carrier and the second carrier are different, and the carrier information includes a starting frequency domain position, a bandwidth and a subcarrier interval, and the method further includes: and the terminal equipment determines a measurement center frequency point corresponding to the initial frequency domain position and the bandwidth according to the initial frequency domain position and the bandwidth. The terminal equipment determines a first cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of a source cell, and performs first RRM measurement on the source cell and the first cell. And the terminal equipment determines a second cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the target cell, and performs second RRM measurement on the target cell and the second cell.

In a possible implementation manner, the first carrier and the second carrier are the same, the carrier information includes a measurement center frequency point, and the method further includes: and the terminal equipment determines a third cell which has the same central frequency point as the measurement of the source cell or the target cell according to the carrier information, and performs third RRM measurement on the source cell, the target cell and the third cell.

In a possible implementation manner, the first carrier and the second carrier are the same, and the carrier information includes a measurement center frequency point and a subcarrier interval, and the method further includes: and the terminal equipment determines a third cell with the same measurement center frequency point and subcarrier interval as those of the source cell or the target cell according to the carrier information, and performs third RRM measurement on the source cell, the target cell and the third cell.

In one possible implementation, the first carrier and the second carrier are the same, and the carrier information includes a starting frequency domain position, a bandwidth, and a subcarrier spacing, the method further includes: and the terminal equipment determines a measurement center frequency point corresponding to the initial frequency domain position and the bandwidth according to the initial frequency domain position and the bandwidth. And the terminal equipment determines a third cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the source cell or the target cell, and performs third RRM measurement on the source cell, the target cell and the third cell.

In a possible implementation manner, the period of switching the cell according to the first signaling is from the receiving of the first signaling by the terminal equipment to the receiving of the second signaling by the terminal equipment; and the second signaling is used for indicating the terminal equipment to disconnect from the source cell.

After the cell handover is completed according to the first signaling, the terminal device may perform RRM measurement according to the RRM measurement method in the related art. I.e. the terminal device has disconnected from the source cell, there is no need to carry carriers that restrict its RRM measurements.

In one possible implementation, the method further includes: and the terminal equipment determines the first carrier according to the measurement center frequency point of the source cell. Or the terminal equipment determines the first carrier according to the measurement center frequency point of the source cell and the subcarrier interval. Or the terminal equipment determines the first carrier according to the measurement center frequency point, the bandwidth and the subcarrier interval of the source cell.

In one possible implementation, the method further includes: and the terminal equipment determines the second carrier according to the measurement central frequency point of the target cell. Or the terminal equipment determines the second carrier according to the measurement center frequency point of the target cell and the subcarrier interval. Or the terminal equipment obtains and determines the second carrier according to the measurement center frequency point, the bandwidth and the subcarrier interval of the target cell.

In a second aspect, the present application provides a measurement method, in which a network device generates a first signaling; the first signaling is used to instruct at least one terminal device to perform a dual activation protocol stack DAPS cell handover. The network device sends a first signaling to at least one terminal device.

For technical effects of the measurement method according to the second aspect, reference may be made to the technical effects of the measurement method according to the first aspect, and details are not repeated here.

In a third aspect, the present application provides a measurement method, in which a network device generates a second signaling; the second signaling is used for instructing at least one terminal device to disconnect from a source cell, and the source cell is a cell which provides service for the at least one terminal device before cell handover. The network device sends a second signaling to the at least one terminal device.

For technical effects of the measurement method according to the third aspect, reference may be made to the technical effects of the measurement method according to the first aspect, and details are not repeated here.

In a fourth aspect, the present application provides a communication apparatus, which may be a device implementing the method in the first aspect, or may be a component in the device (for example, may be a system on chip in the device), and the apparatus may include: a receiving and sending module and a processing module. The receiving and sending module is used for receiving a first signaling; the first signaling is used to indicate to perform a dual activation protocol stack DAPS cell handover. A processing module, configured to perform RRM measurement on a first carrier and a second carrier during cell handover according to a first signaling; the first carrier is a carrier where a source cell is located, and the second carrier is a carrier where a target cell is located; the source cell is a cell providing service before cell switching, and the target cell is a cell providing service after cell switching.

In a possible implementation manner, the processing module is specifically configured to perform a first RRM measurement on the source cell and perform a second RRM measurement on the target cell.

In one possible implementation, the first carrier and the second carrier are not the same. The processing module is further configured to perform a first RRM measurement on the source cell and the first cell, and perform a second RRM measurement on the target cell and the second cell; the carrier where the first cell is located is a first carrier, and the carrier where the second cell is located is a second carrier.

In one possible implementation, the first carrier and the second carrier are the same. The processing module is further configured to perform a third RRM measurement on the source cell, the target cell, and a third cell; and the carrier where the third cell is located is the first carrier or the second carrier.

In a possible implementation manner, the transceiver module is further configured to acquire carrier information; the carrier information includes one or more of the following items: and measuring the central frequency point, the subcarrier interval, the bandwidth and the initial frequency domain position.

In a possible implementation manner, the first carrier and the second carrier are different, and the carrier information includes a measurement center frequency point. The processing module is further configured to determine, according to the carrier information, a first cell that is the same as a measurement center frequency of the source cell, and perform first RRM measurement on the source cell and the first cell. And determining a second cell which is the same as the measurement center frequency point of the target cell according to the carrier information, and performing second RRM measurement on the target cell and the second cell.

In a possible implementation manner, the first carrier and the second carrier are different, and the carrier information includes a measurement center frequency point and a subcarrier interval. The processing module is further configured to determine, according to the carrier information, a first cell having a same measurement center frequency point and subcarrier interval as the source cell, and perform first RRM measurement on the source cell and the first cell. And determining a second cell with the same measurement center frequency point and subcarrier interval as those of the target cell according to the carrier information, and performing second RRM measurement on the target cell and the second cell.

In a possible implementation manner, the first carrier and the second carrier are different, and the carrier information includes a starting frequency domain position, a bandwidth, and a subcarrier interval. And the processing module is also used for determining the measurement center frequency point corresponding to the initial frequency domain position and the bandwidth according to the initial frequency domain position and the bandwidth. The processing module is further configured to determine a first cell having a same measurement center frequency, bandwidth, and subcarrier spacing as those of the source cell, and perform a first RRM measurement on the source cell and the first cell. And determining a second cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the target cell, and performing second RRM measurement on the target cell and the second cell.

In a possible implementation manner, the first carrier and the second carrier are the same, and the carrier information includes a measurement center frequency point. And the processing module is further configured to determine a third cell having the same measurement center frequency point as the source cell or the target cell according to the carrier information, and perform third RRM measurement on the source cell, the target cell, and the third cell.

In a possible implementation manner, the first carrier and the second carrier are the same, and the carrier information includes a measurement center frequency point and a subcarrier interval. And the processing module is further configured to determine a third cell having the same measurement center frequency point and subcarrier interval as those of the source cell or the target cell according to the carrier information, and perform third RRM measurement on the source cell, the target cell, and the third cell.

In one possible implementation, the first carrier and the second carrier are the same, and the carrier information includes a starting frequency domain position, a bandwidth, and a subcarrier spacing. And the processing module is also used for determining the measurement center frequency point corresponding to the initial frequency domain position and the bandwidth according to the initial frequency domain position and the bandwidth. And the processing module is further configured to determine a third cell having the same measurement center frequency, bandwidth and subcarrier spacing as those of the source cell or the target cell, and perform third RRM measurement on the source cell, the target cell and the third cell.

In a possible implementation manner, the period of switching the cell according to the first signaling is from the receiving and sending module receiving the first signaling to the receiving and sending module receiving the second signaling; wherein the second signaling is used for indicating to disconnect the connection with the source cell.

In a possible implementation manner, the processing module is further configured to determine the first carrier according to a measurement center frequency of the source cell. Or, determining the first carrier according to the measurement center frequency point of the source cell and the subcarrier interval. Or, determining the first carrier according to the measurement center frequency point, the bandwidth and the subcarrier interval of the source cell.

In a possible implementation manner, the processing module is further configured to determine the second carrier according to the measurement center frequency of the target cell. Or, determining the second carrier according to the measurement center frequency point of the target cell and the subcarrier interval. Or, the second carrier is determined according to the measurement center frequency point, the bandwidth and the subcarrier interval of the target cell.

Alternatively, the transceiver module may be implemented by a transceiver or a transceiver-related circuit component, and may be a transceiver or a transceiver unit. The transceiver module may include a receiving module and a transmitting module. The receiving module is used for receiving a switching command sent by the network equipment. The sending module is used for sending signals to the network equipment and/or other equipment. The embodiment of the present application does not specifically limit the specific implementation manner of the transceiver module.

Optionally, the communication device according to the fourth aspect may further include a storage module, where the storage module stores a program or instructions. The program or instructions, when executed by the processing module, enable the communication apparatus of the fourth aspect to perform the measurement method of the first aspect.

It should be noted that the communication apparatus described in the fourth aspect may be a terminal device or a chip (system) or other component or assembly that can be disposed in the terminal device, and this application is not limited thereto.

In addition, for technical effects of the communication apparatus according to the fourth aspect, reference may be made to the technical effects of the measurement method according to the first aspect, and details are not repeated here.

In a fifth aspect, the present application provides a network device, comprising: a processing module and a transceiver module. The processing module is used for generating a first signaling; the first signaling is used to instruct at least one terminal device to perform a dual activation protocol stack DAPS cell handover. The receiving and sending module is used for sending a first signaling to at least one terminal device.

Optionally, the network device according to the fifth aspect may further include a storage module, where the storage module stores a program or instructions. The program or instructions, when executed by the processing module, enable the network device of the fifth aspect to perform the measurement method of the second aspect.

In addition, for the technical effect of the network device according to the fifth aspect, reference may be made to the technical effect of the measurement method according to the first aspect, and details are not repeated here.

In a sixth aspect, the present application provides a network device, comprising: a processing module and a transceiver module. The processing module is used for generating a second signaling; the second signaling is used for instructing at least one terminal device to disconnect from a source cell, and the source cell is a cell which provides service for the at least one terminal device before cell handover. And the transceiver module is used for sending the second signaling to at least one terminal device.

Optionally, the network device according to the sixth aspect may further include a storage module, where the storage module stores a program or an instruction. The program or instructions, when executed by the processing module, enable the network device according to the sixth aspect to perform the measurement method according to the third aspect.

In addition, for the technical effect of the network device according to the sixth aspect, reference may be made to the technical effect of the measurement method according to the first aspect, and details are not repeated here.

In a seventh aspect, the present application provides a communication device having a function of implementing the measurement method described in the first to third aspects and any possible implementation manner thereof. The function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In an eighth aspect, a communication apparatus is provided, including: a processor and a memory; the memory is configured to store a computer program, and the processor is configured to execute the computer program stored in the memory to cause the communication apparatus to perform the measurement method as described in the first to third aspects and any one of the possible implementations.

In a ninth aspect, there is provided a communication apparatus comprising: a processor and a memory; the memory is configured to store computer-executable instructions, and when the communication apparatus is running, the processor executes the computer-executable instructions stored by the memory to cause the communication apparatus to perform the measurement method as described in the first to third aspects and any possible implementation manner thereof.

In a tenth aspect, there is provided a communication apparatus comprising: a processor; the processor is configured to be coupled to the memory, and after reading the instructions in the memory, perform the measurement method according to the instructions as described in the first aspect to the third aspect, and any possible implementation manner thereof.

In an eleventh aspect, the present application provides a communication apparatus comprising: a processor, a memory, and a communication interface. Wherein the memory is used to store one or more programs. The one or more programs include computer executable instructions which, when executed by the apparatus, cause the apparatus to perform the measurement method of the first to third aspects, and any possible implementation thereof.

In a twelfth aspect, the present application provides a communication device, comprising: a processor and interface circuitry. The interface circuit is used for receiving the code instruction and transmitting the code instruction to the processor. The processor is configured to execute the code instructions to perform the measurement method described in the first to third aspects and any possible implementation manner thereof.

In a thirteenth aspect, an embodiment of the present application provides a communication apparatus, which may be a chip system, where the chip system includes a processor and may further include a memory, and is configured to implement the functions of the measurement method described in the first aspect to the third aspect, and any possible implementation manner thereof. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In a fourteenth aspect, a communication device is provided, which may be circuitry comprising processing circuitry configured to perform the measurement method as described in the first to third aspects, and any one of the possible implementations.

In a fifteenth aspect, an embodiment of the present application provides a communication system, which includes at least one terminal device, a first network device, and a second network device. Wherein at least one terminal device is configured to perform the measurement method as described in the first aspect and any one of its possible implementations. The first network equipment is used for sending a first signaling to at least one terminal equipment; the first signaling is used to instruct at least one terminal device to perform a dual activation protocol stack DAPS cell handover. The second network equipment is used for sending a second signaling to at least one terminal equipment; the second signaling is used to instruct at least one terminal device to disconnect from the source cell. The source cell is a cell serving at least one terminal device before cell handover.

In a sixteenth aspect, an embodiment of the present application provides a chip, where the chip includes: a processor and interface circuitry. And the interface circuit is used for receiving the code instruction and transmitting the code instruction to the processor. The processor is configured to execute the code instructions to perform the measurement method as described in the first to third aspects and any one of the possible implementations.

Seventeenth aspect, the present embodiments provide a readable storage medium, in which a computer program is stored, and when the computer program is executed, the measurement method described in the first to third aspects and any possible implementation manner is implemented.

In an eighteenth aspect, the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the measurement method described in the first to third aspects above, and any possible implementation thereof.

Drawings

Fig. 1 is a schematic network architecture of a communication system according to an embodiment of the present application;

fig. 2 is a first schematic view of a measurement method provided in an embodiment of the present application;

fig. 3 is a schematic view illustrating a measurement method according to an embodiment of the present application;

fig. 4 is a third schematic view of a measurement method provided in the embodiment of the present application;

fig. 5 is a first schematic structural diagram of a communication device according to an embodiment of the present disclosure;

fig. 6 is a first schematic structural diagram of a network device according to an embodiment of the present application;

fig. 7 is a second schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is a third schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The following describes in detail a measurement method and an apparatus provided in the embodiments of the present application with reference to the accompanying drawings.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

It should be understood that the technical solutions of the embodiments of the present application may be applied to various communication systems, for example: global system for mobile communications (GSM) systems, code Division Multiple Access (CDMA) systems, wideband Code Division Multiple Access (WCDMA) systems, general Packet Radio Service (GPRS), long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), worldwide interoperability for microwave access (world wide access, max) communication systems, public Land Mobile Network (PLMN) systems, fifth generation (PLMN) systems, or similar wireless communication systems, and so on, for future use in future communication systems, or similar wireless NR systems.

Fig. 1 is a schematic diagram of a network architecture of a communication system according to an embodiment of the present application. It should be noted that some scenarios in the embodiment of the present application are described by taking a scenario in the communication system shown in fig. 1 as an example. It should be noted that the solution in the embodiment of the present application may also be applied to other mobile communication systems, and the corresponding names may also be replaced with names of corresponding functions in other mobile communication systems.

As shown in fig. 1, the communication system 100 includes a terminal device 110, a network device 120, a network device 130, and a network device 140.

It should be understood that, in the communication system, the communication areas are divided according to areas, each communication area should include one or more network devices, an area covered by a signal of a network device is a cell corresponding to a current network device, and the network device may provide a service for one or more terminal devices in the corresponding cell.

As shown in fig. 1, a cell corresponding to the network device 120 is a source cell, a cell corresponding to the network device 130 is a target cell, and a cell corresponding to the network device 140 is a neighboring cell (which may also be referred to as a neighboring cell). The terminal device 110 initially establishes a connection with the network device 120, executes a Dual Active Protocol Stack (DAPS) cell handover after receiving a signaling sent by the network device 120, and the terminal device 110 maintains a connection with both the network device 120 and the network device 130 during a cell handover period until receiving the signaling sent by the network device 130, disconnects the connection with the network device 120, releases a source cell, and completes cell handover, that is, switches from the source cell to a target cell.

The terminal device referred to in the embodiments of the present application may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like, and is a device for providing voice and/or data connectivity to a user. The terminal device may communicate with a core network via a Radio Access Network (RAN), and may exchange voice and/or data with the RAN. For example, the terminal device may be a handheld device, an in-vehicle device, a vehicle user device, or the like, having a wireless connection function. Currently, some examples of terminal devices are: examples of the implementation of the wireless terminal include a mobile phone (mobile phone), a tablet computer, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a laptop computer, a palmtop computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation security), a wireless terminal in smart terminal in city (city), a wireless terminal in smart grid (city), and the like. In this embodiment of the present application, the apparatus for implementing the function of the terminal device may be the terminal device, or may be an apparatus (such as a system on chip in the terminal device) that supports the terminal device to implement the function.

The network device according to the embodiment of the present application may be a device for communicating with a terminal device, for example, the network device may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network or a network after 5G network, or a network device in a future evolved PLMN network.

The network device according to the embodiment of the present application is a device deployed in a radio access network to provide a wireless communication function, and is a device for accessing a terminal device to a wireless network. The network device may be a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). The network device may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB or evolved Node B) in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), such as a conventional macro base station eNB and a micro base station eNB in a heterogeneous network scenario, or may also include a next generation Node B (gNB) in a fifth generation mobile communication technology (5 g) New Radio (NR) system, or may also include a Transmission Reception Point (TRP), a home base station (e.g., home Node B), a Base Band Unit (BBU), a BBU, or WiFi access point (access point, AP), and the like, or may also include a cloud access point (network, access point) in a distributed access network (HNB), a distributed access network (CU), and a distributed access network (CU) system, or the like, or may also include a distributed access network (ran) unit in a distributed access network (CU), and a distributed access network (CU) system, as examples.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) Dual Active Protocol Stack (DAPS) cell handover

Currently, the handover of a terminal device between cells includes a conventional cell handover and a DAPS cell handover.

The conventional cell switching means that the terminal device receives a signal of a source cell through a radio frequency link, and disconnects the connection with the source cell after receiving a switching command sent by the source cell. And then, adjusting the radio frequency link to match the target cell, and connecting to the target cell according to the random access response.

The DAPS cell handover means that the terminal device receives a signal of a source cell through the radio frequency link 1, maintains the connection between the radio frequency link 1 and the source cell after receiving a DAPS cell handover command sent by the source cell, and adjusts the radio frequency link 2 to match with a target cell. And after the connection with the target cell is completed and a source cell releasing command sent by the target cell is received, the connection with the source cell is disconnected. The radio frequency link 1 and the radio frequency link 2 in the DAPS cell handover process may also be configured as 1 radio frequency link, and the radio frequency link has a larger bandwidth and may cover two carriers corresponding to the source cell and the target cell, so as to ensure that signals of the source cell and the target cell may be received in the DAPS cell handover process.

Therefore, during the conventional cell switching, the terminal device has no data transmission with the source cell and the target cell in the period from the time when the terminal device receives the switching command to release the source cell to the time when the terminal device is connected with the target cell. During the DAPS cell handover, the terminal device needs to process the transceiving signals of the source cell and the target cell during the period from the time when the terminal device receives the DAPS cell handover command to the time when the terminal device releases the source cell, and thus, the terminal device should avoid disconnecting from the network device, and need to adjust the uplink power of the source cell and the target cell, so as to prevent the maximum transmitting power of the terminal device from being exceeded.

Wherein, the uplink power includes: a physical uplink shared channel (psch), a physical uplink control channel (PSCCH), or a Physical Random Access Channel (PRACH) transmission power. As known from the protocol TS38.213, the Path Loss (PL) of the source cell and the path loss (path loss) of the target cell can be determined by measuring the L3 RSRP of the source cell and the target cell, respectively. If the source cell and/or the target cell need to transmit uplink signals, the transmission power of the uplink signals can be determined according to the PL, and uplink power control can be performed.

2) Radio Resource Management (RRM) measurements

RRM measurements may also be referred to as mobility measurements. In LTE communication systems, RRM measurements are based on Common Reference Signal (CRS) measurements, including Reference Signal Received Power (RSRP), reference Signal Received Quality (RSRQ), and signal to interference and noise ratio (SINR) measurements.

In NR communication systems, RRM measurements include two types: synchronization Signal Block (SSB) based measurements and reference signal channel state information (CSI-RS) based measurements. If based on SSB measurements, then RRM measurements include synchronization signal based reference signal received power (SS-RSRP), synchronization signal based reference signal received quality (SS-RSRQ), and synchronization signal based signal to noise and interference ratio (SS-SINR) measurements. The RRM measurements include measurements of CSI-RSRP, CSI-RSRQ, and CSI-SINR if based on CSI-RS measurements.

RRM measurements, such as L3 RSRP measurements, are classified into intra-frequency measurements, inter-frequency measurements, and inter-system measurements. The common-frequency measurement means that the measured cells are on the same carrier. And the inter-frequency measurement or inter-system measurement means that the measured cell is not on one carrier.

In the prior art, there is no specific specification for RRM measurement behavior of the terminal device during cell handover. After receiving the carrier information list sent by the network device, the terminal device may select to perform RRM measurement on all carriers (carriers), may also select to perform measurement on part of the RRM carriers, and may also select to perform no RRM measurement on all carriers.

Referring to the communication system shown in fig. 1, the terminal device obtains a carrier information list sent by the network device, where the carrier information list may include information of a carrier where the source cell is located, information of a carrier where the target cell is located, and information of a carrier where the neighboring cell is located. Or, the terminal device is connected to the network device in the source cell, and the terminal device knows the carrier where the source cell is located. The terminal equipment receives a switching command sent by a source cell and carries a carrier information list, wherein the carrier information list comprises information of a carrier where a target cell is located and information of a carrier where an adjacent cell is located. Or, the terminal device obtains the carrier information of the cell by other methods and opportunities, which is not limited in this embodiment of the present application.

The carrier information may be sent in a form of a list, such as a carrier information list. But may also be sent in other forms such as sets, a list being just one implementation. In the embodiment of the present application, the transmission form of the carrier information is not limited. In practical application, the terminal device does not limit what form the carrier information is specifically sent, and it is essential to acquire the carrier information sent by the network device. The carrier information list, which is referred to hereinafter, is also used to describe carrier information.

The carrier in which the cell is located refers to one or more carriers in the cell. It can also be described as a carrier of a cell, a carrier configured by a cell, a carrier corresponding to a cell, etc. English may be described as the carrier of the cell, or alternatively, the frequency layer of the cell.

Then, during the period when the terminal device performs the DAPS cell handover, if the terminal device selects that all carriers are not measured by RRM, the terminal device cannot obtain L3 RSRP, and cannot obtain uplink power of the source cell and the target cell according to L3 RSRP, and cannot implement uplink power control.

If the terminal device performs RRM measurement of all or part of the carriers, the terminal device is connected to the source cell and the target cell through two or one radio frequency link, and simultaneously transmits and receives signals on two carriers of the source cell and the target cell, the carrier where the source cell is located and the carrier where the target cell is located both belong to a serving carrier for the terminal device, and other carriers different from the two carriers all belong to a different-frequency carrier or a different-system carrier. Then, since the pilot frequency carrier or the inter-system carrier is not matched with the radio frequency link currently served by the terminal device, the terminal device needs to adjust the radio frequency link to match the corresponding pilot frequency carrier or the inter-system carrier. The radio frequency link adjusted by the terminal device may be matched with the pilot frequency carrier or the inter-system carrier, and cannot receive the signal on the original service carrier, and the radio frequency link needs to be adjusted frequently.

Based on this, the third generation partnership project (3 gpp) proposes a measurement gap (measurement gap) in such a manner that a part of time (i.e., measurement gap time) is reserved for each period according to a preset period. In the gap measurement time period, the terminal device does not send and receive any data, but adjusts the radio frequency link to perform RRM measurement on the different frequency carrier or the different system carrier, and adjusts the radio frequency link to receive the source cell signal after the gap measurement time is over. However, this measurement method may cause the terminal device to disconnect from the network device, which is not suitable for the purpose of disconnecting the terminal device from the network device during the DAPS cell handover.

Therefore, during the DAPS cell handover, RRM measurement behavior of the terminal device may cause a problem of controlling uplink power or a problem of transmission interruption between the terminal device and the source cell and the target cell.

Based on this, the embodiments of the present application provide a measurement method, which ensures that, during DAPS cell handover, a terminal device can control uplink powers of a source cell and a target cell, and avoid transmission interruption between the terminal device and the source cell and the target cell.

Fig. 2 is a first schematic diagram of a measurement method according to an embodiment of the present application. The measurement method is applicable to the communication system shown in fig. 1, and as shown in fig. 2, the method may include S201-S202:

s201, the terminal equipment receives a first signaling.

Specifically, the terminal device receives a first signaling sent by the source cell, where the first signaling is used to instruct the terminal device to perform DAPS cell handover. The source cell is a cell for providing service for the terminal equipment before cell switching.

Optionally, after receiving the first signaling, the terminal device may adjust the radio frequency link, so as to ensure that the terminal device can receive the transceiving signals of the source cell and the target cell at the same time. Then, the terminal device starts the synchronization process of the target cell while maintaining normal connection with the source cell. After obtaining the fine timing synchronization, starting a random access process, including sending a signal to a target cell and receiving a random access response message from the target cell through a Physical Random Access Channel (PRACH). And after the terminal equipment receives the second signaling sent by the target cell, the corresponding radio frequency link adjustment is not carried out, the connection with the source cell is disconnected, and only the connection with the target cell is kept, so that the DAPS cell switching is completed. And the second signaling is used for indicating the terminal equipment to disconnect from the source cell. It can be understood that the target cell is a cell that provides service for the terminal device after cell handover.

S202, during the cell handover according to the first signaling, the terminal device performs RRM measurement of the first carrier and the second carrier.

The period of switching the cell according to the first signaling is from the receiving of the first signaling by the terminal equipment to the receiving of the second signaling by the terminal equipment. During the period that the terminal device switches the cell according to the first signaling, the terminal device is kept connected with both the source cell and the target cell, and RRM measurement is required to adjust uplink power of the source cell and/or the target cell to ensure that the sum of the uplink power does not exceed the maximum transmission power of the terminal device. That is, if it is determined that the sum of the uplink powers of the source cell and the target cell exceeds the maximum transmission power of the terminal device according to the RRM measurement result, the terminal device needs to adjust the uplink power of one cell or needs to adjust the uplink powers of two cells.

The first carrier is a carrier where a source cell is located, and the second carrier is a carrier where a target cell is located. The terminal equipment keeps connection with both the source cell and the target cell during the cell switching period according to the first signaling, so the source cell and the target cell are service cells of the terminal equipment, and the first carrier and the second carrier are service carriers of the terminal equipment. It can be understood that the carrier where the one or more neighboring cells are located may be a first carrier or a second carrier, or may also be an inter-frequency carrier or an inter-system carrier that is different from both the first carrier and the second carrier.

Optionally, the terminal device is connected to the source cell and the target cell during DAPS cell handover, and the source cell and the target cell are both serving cells of the terminal device, so that the RRM measurement of the first carrier and the second carrier does not require adjustment of the radio frequency link, and therefore interruption between the terminal device and the network device is not caused.

Optionally, the first signaling may also carry a carrier information list, or the terminal device receives the carrier information list in another manner. The carrier information list includes one or more of the following items: and measuring the central frequency point, the subcarrier interval, the bandwidth and the initial frequency domain position. The information of the carriers of the target cell and the neighboring cell can be determined through the carrier information list. Further, it can be understood that the terminal device has already connected to the source cell, and therefore the carrier information list including the information of the first carrier where the source cell is located should have been obtained before the connection. In this way, the terminal device may determine, according to the acquired carrier information list, the first carrier where the source cell is located and the second carrier where the target cell is located.

In a possible implementation manner, the terminal device is located in an LTE communication system, and then the terminal device may determine, according to a measurement center frequency of the source cell, a first carrier where the source cell is located. The terminal device may determine the second carrier where the target cell is located according to the measurement center frequency point of the target cell.

In yet another possible implementation manner, the terminal device is located in the 5G NR communication system, and based on the measurement of the SSB, the terminal device may determine the first carrier where the source cell is located according to the measurement center frequency point and the subcarrier interval of the source cell. The terminal device may determine the second carrier where the target cell is located according to the measurement center frequency point of the target cell and the subcarrier interval.

In still another possible implementation manner, the terminal device is located in a 5G NR communication system, and based on measurement of the CSI-RS, the terminal device may determine, according to a measurement center frequency, a bandwidth, and a subcarrier interval of the source cell, a first carrier where the source cell is located. The terminal device may determine the second carrier where the target cell is located according to the measurement center frequency, the bandwidth, and the subcarrier spacing of the target cell.

In this way, during the period when the terminal device receives the first signaling and starts to perform the DAPS cell handover, the first carrier and the second carrier that need to perform the RRM measurement may be determined according to the carrier information list, and only the terminal device is required or only allowed to perform the RRM measurement on the first carrier and the second carrier, so as to avoid the inter-frequency measurement or the inter-system measurement.

Optionally, the first carrier and the second carrier are the same or different. And if the first carrier wave and the second carrier wave are the same, performing RRM measurement on the first carrier wave and the second carrier wave according to a measurement period corresponding to the first carrier wave or the second carrier wave. And if the first carrier wave is different from the second carrier wave, performing RRM measurement on the first carrier wave according to a first measurement period corresponding to the first carrier wave, and performing RRM measurement on the second carrier wave according to a second measurement period corresponding to the second carrier wave.

It can be understood that the first carrier and the second carrier are both service carriers of the terminal device, and therefore, even if the first carrier and the second carrier are different, the radio frequency link does not need to be adjusted. That is, during cell handover, the first carrier and the second carrier are different, which does not cause the terminal device and the network device to interrupt transmission.

Specifically, the signal transmission mode of the terminal device includes a Discontinuous Reception (DRX) mode and a non-DRX mode. During cell handover, the terminal device is in non-DRX mode, and based on the measurement of the SSB, the RRM measurement period may be determined according to the frequency range (frequency range) in which the carrier is located. Specifically, the 5G spectrum is divided into two regions FR1 and FR2. Where FR1 has a frequency in the range of 450MHz to 6GHz, also referred to as below 6GHz (Sub-6 GHz). The frequency range of FR2 is 24250MHz-52600MHz, also known as Above 6GHz (Above-6 GHz) or millimeter Wave (mm Wave). For FR1, the RRM measurement period is a minimum of 200ms; for FR2, the RRM measurement period is a minimum of 400ms.

For example, the terminal device may determine a first measurement period corresponding to the first carrier according to the frequency range where the first carrier is located, and may determine a second measurement period corresponding to the second carrier according to the frequency range where the second carrier is located. Wherein the first measurement period and the second measurement period may be the same or different.

And the terminal equipment performs RRM measurement of the first carrier wave according to the first measurement period and performs RRM measurement of the second carrier wave according to the second measurement period. When uplink transmission is required to be performed by the terminal device, RRM measurement results on the first carrier and the second carrier, which are obtained by a current time node or a time node closest to the current time node, may be obtained, and L3 RSRP is obtained according to the RRM measurement results.

In addition, the terminal device may also obtain the reference signal power according to the indication information sent by the source cell and the target cell, or obtain the reference signal power according to the first signaling. And then the path loss of the uplink of the source cell is obtained according to the difference between the reference signal power of the source cell and the L3 RSRP, and the path loss of the uplink of the target cell is obtained according to the difference between the reference signal power of the target cell and the L3 RSRP.

Then, the terminal device may determine uplink power required for uplink transmission of the current source cell and/or the target cell according to the path loss of the source cell and the target cell, and adjust the uplink power of the source cell and/or the target cell to control the sum of the current uplink power to be less than or equal to the maximum transmission power of the terminal device. The transmission power control of the uplink signal is realized under the condition of avoiding the interruption of the transmission between the terminal equipment and the network equipment.

In order to better understand the measurement method provided by the embodiments of the present application, some specific embodiments are described in detail below with reference to fig. 3. Fig. 3 is a schematic view of a second measurement method provided in the embodiment of the present application, where S202 may be specifically implemented as S302 in fig. 3. As shown in fig. 3, the method may include S301-S302:

s301, the terminal equipment receives a first signaling.

S301 is the same as S201 described above, and the detailed description is referred to above, and is not repeated here.

S302, during the cell handover according to the first signaling, the terminal device performs a first RRM measurement on the source cell and performs a second RRM measurement on the target cell.

Optionally, during the cell handover according to the first signaling, only the terminal device is required or allowed to perform the first RRM measurement on the source cell on the first carrier, and perform the second RRM measurement on the target cell on the second carrier. That is, the intra-frequency measurement is not performed even if the same intra-frequency carrier as the first carrier or the second carrier exists in the neighboring cell.

That is to say, in the process of performing uplink power control by the terminal device, it may be determined whether the transmission power of the uplink signal of the source cell and/or the target cell needs to be adjusted according to the result of the first RRM measurement and the result of the second RRM measurement, without determining the result of the RRM measurement of the neighboring cell. Therefore, the method can ensure that the different-frequency measurement or the different-system measurement cannot occur, ensure the measurement efficiency and save the measurement resources.

Optionally, the first carrier and the second carrier are the same or different. And if the first carrier and the second carrier are the same, performing RRM measurement on the source cell and the target cell according to the same measurement period. If the first carrier wave is different from the second carrier wave, performing first RRM measurement on the source cell according to a first measurement period corresponding to the first carrier wave; and performing second RRM measurement on the target cell according to a second measurement period corresponding to the second carrier. That is, the first RRM measurement and the second RRM measurement may be the same or different.

In order to better understand the measurement method provided by the embodiments of the present application, some specific embodiments are described in detail below with reference to fig. 4. Fig. 4 is a third schematic view of a measurement method provided in the embodiment of the present application, where the above S202 may be specifically implemented as S402 in fig. 4. Wherein S402 includes S402a or S402b. As shown in fig. 4, the method may include S401-S402:

s401, the terminal equipment receives a first signaling.

S401 is the same as S201 described above, and the detailed description is referred to above, and is not repeated here.

S402a, the first carrier and the second carrier are different, and the terminal device performs a first RRM measurement on the source cell and the first cell, and performs a second RRM measurement on the target cell and the second cell.

The first cell and the second cell are adjacent cells of the terminal equipment. The carrier where the first cell is located is a first carrier, and the carrier where the second cell is located is a second carrier. The carrier information list acquired by the terminal device may include information of carriers of neighboring cells, that is, the carriers of the first cell and the carriers of the second cell may be determined.

For example, for the same carrier, the terminal device may perform RRM measurement in the same measurement window, i.e. in the time domain. Therefore, the performing, by the terminal device, RRM measurement on the first carrier and the second carrier may include only requiring or allowing the terminal device to perform RRM measurement on the source cell, the target cell, and the neighboring cell. While not allowing the terminal device to make RRM measurements on other inter-frequency carriers or inter-system carriers.

It can be understood that the terminal device needs to perform the first RRM measurement according to a first measurement period corresponding to the first carrier, and perform the second RRM measurement according to a second measurement period corresponding to the second carrier. The terminal device performs a first RRM measurement on the source cell and the first cell, which may also be understood as that the terminal device performs the first RRM measurement on the source cell and the first cell on the first carrier. Performing the second RRM measurement on the target cell and the second cell, which may also be understood as that the terminal device performs the second RRM measurement on the source cell and the first cell on the second carrier.

In a possible implementation manner, the carrier information list includes a measurement center frequency point, and the terminal device determines, according to the carrier information list, a first cell that is the same as the measurement center frequency point of the source cell, and performs a first RRM measurement on the source cell and the first cell. And the terminal equipment determines a second cell which is the same as the measurement center frequency point of the target cell according to the carrier information list, and performs second RRM measurement on the target cell and the second cell.

That is to say, the current terminal device is located in the LTE communication system, and the terminal device may directly determine, according to the measurement central frequency point, cells corresponding to the first carrier and the second carrier, that is, whether a carrier where the cell is located is a service carrier corresponding to the terminal device. And then only allowing RRM measurements to be made on cells that measure the same center carrier as the source cell or the target cell.

Exemplarily, in an LTE system, the subcarrier intervals corresponding to DAPS cell handover are all 15KHz, so that the terminal device can determine whether the carrier where the neighboring cell is located is the same as the first carrier or the second carrier according to the measurement center frequency point.

In another possible implementation manner, the carrier information list includes a measurement center frequency point and a subcarrier interval, and the terminal device determines, according to the carrier information list, a first cell that is the same as the measurement center frequency point and the subcarrier interval of the source cell, and performs the first RRM measurement on the source cell and the first cell. And the terminal equipment determines a second cell with the same measurement center frequency point and subcarrier interval as those of the target cell according to the carrier information list, and performs second RRM measurement on the target cell and the second cell.

That is, the current terminal device is located in the 5G NR communication system and is an SSB-based measurement. It should be noted that the measurement center frequency point and the measurement center frequency point of the source cell, and the carrier of the first cell whose subcarrier interval is the same as the subcarrier interval of the source cell can be determined to be the same as the first carrier. That is, it is necessary to determine whether the carriers of the two cells are the same, and to determine whether the intervals between the measurement center frequency point and the subcarriers are the same at the same time.

In another possible implementation manner, the carrier information list includes a starting frequency domain position, a bandwidth, and a subcarrier interval, and the terminal device determines a measurement center frequency point corresponding to the starting frequency domain position and the bandwidth according to the starting frequency domain position and the bandwidth. The terminal equipment determines a first cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of a source cell, and performs first RRM measurement on the source cell and the first cell. And the terminal equipment determines a second cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the target cell, and performs second RRM measurement on the target cell and the second cell.

That is, the current terminal device is located in the 5G NR communication system and is CSI-RS based measurement. For example, the terminal device may obtain the measurement center frequency point by calculating according to the starting frequency domain position and the bandwidth in the obtained carrier information list, for example, the measurement center frequency point may be obtained by adding half of the bandwidth to the frequency point at the starting frequency domain position. And under the current scene, whether the carriers of the two cells are the same or not is judged, and whether the measurement center frequency point, the bandwidth and the subcarrier interval are the same or not needs to be judged at the same time.

The source cell, the target cell, the first cell and the second cell that need to perform RRM measurement may also be referred to as measurement targets (measurement objects) or the first carrier and the second carrier are measurement targets. After determining the measurement target through the carrier information list, the terminal device performs RRM measurement on the measurement target to obtain a corresponding RRM measurement result, and performs uplink power control.

S402b, the first carrier is the same as the second carrier, and the terminal device performs a third RRM measurement on the source cell, the target cell, and the third cell.

And the third cell is a neighboring cell of the terminal equipment. The carrier information list acquired by the terminal device may include information of carriers of a neighboring cell, that is, may determine a carrier of a third cell. Under the condition that the terminal equipment determines that the first carrier and the second carrier are the same, a third cell of which the corresponding carrier is the same as the first carrier or the second carrier can be determined directly according to the carrier information list.

It can be understood that, if the first carrier and the second carrier are the same, the measurement periods corresponding to the first carrier and the second carrier are the same, and the terminal device needs to perform the third RRM measurement according to the measurement period corresponding to the first carrier or the second carrier. The terminal device performs a third RRM measurement on the source cell, the target cell, and the third cell, which may also be understood as that the terminal device performs the third RRM measurement on the source cell, the target cell, and the third cell on the first carrier or the second carrier.

In a possible implementation manner, the carrier information list includes a measurement center frequency point, and the terminal device determines, according to the carrier information list, a third cell that is the same as the measurement center frequency point of the source cell or the target cell, and performs RRM measurement on the source cell, the target cell, and the third cell.

That is, if the first carrier and the second carrier are the same, it is only necessary to determine the carrier that is the same as the first carrier or the second carrier in the carriers in which the neighboring cell is located, and it is not necessary to repeat the respective confirmation of the first carrier and the second carrier. And, the current terminal device is located in the LTE communication system.

In another possible implementation manner, the carrier information list includes a measurement center frequency point and a subcarrier interval, and the terminal device determines, according to the carrier information list, a third cell that is the same as the measurement center frequency point and the subcarrier interval of the source cell or the target cell, and performs RRM measurement on the source cell, the target cell, and the third cell on the first carrier.

That is, the current terminal device is located in the 5G NR communication system and is an SSB-based measurement.

In another possible implementation manner, the carrier information list includes a starting frequency domain position, a bandwidth and a subcarrier interval, and the terminal device determines a measurement center frequency point corresponding to the starting frequency domain position and the bandwidth according to the starting frequency domain position and the bandwidth. And the terminal equipment determines a third cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the source cell or the target cell, and performs RRM measurement on the source cell, the target cell and the third cell on the first carrier.

That is, the current terminal device is located in the 5G NR communication system and is CSI-RS based measurement.

For the remaining methods for determining the same carrier, reference may be made to content S401a, which is not described herein again.

Therefore, in the measurement method provided in the embodiment of the present application, during cell handover according to the DAPS cell handover signaling, RRM measurement may only be performed on the carrier where the serving cell corresponding to the terminal device is located, so as to ensure that the terminal device performs uplink power control, and avoid connection between the terminal device and the network device terminal due to inter-frequency measurement or inter-system measurement.

The measurement method provided by the embodiment of the present application is described in detail above with reference to fig. 2 to 4. The communication device provided by the embodiment of the present application is described in detail below with reference to fig. 5.

Fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 5, the communication apparatus 500 includes: a transceiver module 510 and a processing module 520. The communication apparatus 500 may be used to implement the functions of the terminal device involved in the above method embodiments. The communication apparatus 500 may be a stand-alone terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, a vehicle user device, or a component in the terminal device, such as a chip or a chip system.

In one possible design, when the communication apparatus 500 shown in fig. 5 executes the measurement method embodiments shown in fig. 2, fig. 3, and fig. 4, the transceiver module 510 is configured to receive a first signaling; the first signaling is used to indicate to perform a dual activation protocol stack DAPS cell handover.

A processing module 520, configured to perform RRM measurement on the first carrier and the second carrier during cell handover according to the first signaling; the first carrier is a carrier where a source cell is located, and the second carrier is a carrier where a target cell is located; the source cell is a cell providing service before cell switching, and the target cell is a cell providing service after cell switching.

In a possible implementation, the processing module 520 is specifically configured to perform a first RRM measurement on the source cell and perform a second RRM measurement on the target cell.

In one possible implementation, the first carrier and the second carrier are not the same.

A processing module 520, further configured to perform a first RRM measurement on the source cell and the first cell, and perform a second RRM measurement on the target cell and the second cell; the carrier where the first cell is located is a first carrier, and the carrier where the second cell is located is a second carrier.

In one possible implementation, the first carrier and the second carrier are the same.

A processing module 520, further configured to perform a third RRM measurement on the source cell, the target cell, and a third cell; and the carrier where the third cell is located is the first carrier or the second carrier.

In a possible implementation manner, the transceiver module 510 is further configured to obtain a carrier information list. The carrier information list includes one or more of the following items: and measuring the central frequency point, the subcarrier interval, the bandwidth and the initial frequency domain position.

In a possible implementation manner, the first carrier and the second carrier are different, and the carrier information list includes the measurement center frequency point.

The processing module 520 is further configured to determine, according to the carrier information list, a first cell that is the same as a measurement center frequency of the source cell, and perform a first RRM measurement on the source cell and the first cell.

And determining a second cell which is the same as the measurement center frequency point of the target cell according to the carrier information list, and performing second RRM measurement on the target cell and the second cell.

In a possible implementation manner, the first carrier and the second carrier are different, and the carrier information list includes a measurement center frequency point and a subcarrier interval.

The processing module 520 is further configured to determine, according to the carrier information list, a first cell having a same measurement center frequency point and a same subcarrier interval as that of the source cell, and perform a first RRM measurement on the source cell and the first cell.

And determining a second cell with the same measurement center frequency point and subcarrier interval as those of the target cell according to the carrier information list, and performing second RRM measurement on the target cell and the second cell.

In a possible implementation manner, the first carrier and the second carrier are different, and the carrier information list includes a starting frequency domain position, a bandwidth and a subcarrier interval.

The processing module 520 is further configured to determine, according to the starting frequency domain position and the bandwidth, a measurement center frequency point corresponding to the starting frequency domain position and the bandwidth.

The processing module 520 is further configured to determine a first cell having a same measurement center frequency, bandwidth and subcarrier spacing as those of the source cell, and perform a first RRM measurement on the source cell and the first cell.

And determining a second cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the target cell, and performing second RRM measurement on the target cell and the second cell.

In a possible implementation manner, the first carrier and the second carrier are the same, and the carrier information list includes the measurement center frequency point. The processing module 520 is further configured to determine a third cell that is the same as a measurement center frequency of the source cell or the target cell according to the carrier information list, and perform a third RRM measurement on the source cell, the target cell, and the third cell.

In a possible implementation manner, the first carrier and the second carrier are the same, and the carrier information list includes a measurement center frequency point and a subcarrier interval.

The processing module 520 is further configured to determine a third cell having the same measurement center frequency and subcarrier spacing as those of the source cell or the target cell according to the carrier information list, and perform a third RRM measurement on the source cell, the target cell, and the third cell.

In one possible implementation, the first carrier and the second carrier are the same, and the carrier information list includes a starting frequency domain position, a bandwidth and a subcarrier spacing.

The processing module 520 is further configured to determine a third cell having the same measurement center frequency, bandwidth and subcarrier spacing as those of the source cell or the target cell, and perform a third RRM measurement on the source cell, the target cell and the third cell.

In a possible implementation manner, the processing module 520 is further configured to determine the first carrier according to a measurement center frequency of the source cell.

Or, determining the first carrier according to the measurement center frequency point of the source cell and the subcarrier interval.

Or, determining the first carrier according to the measurement center frequency point, the bandwidth and the subcarrier interval of the source cell.

In a possible implementation manner, the processing module 520 is further configured to determine the second carrier according to a measurement center frequency of the target cell.

Or, determining the second carrier according to the measurement center frequency point of the target cell and the subcarrier interval.

Or, the second carrier is determined according to the measurement center frequency point, the bandwidth and the subcarrier interval of the target cell.

Optionally, the communication device 500 shown in fig. 5 may further include a storage module (not shown in fig. 5) that stores programs or instructions. The program or instructions, when executed by the processing module, enable the communication apparatus 500 shown in fig. 5 to perform the measurement method shown in fig. 2 to 4.

Technical effects of the communication apparatus 500 shown in fig. 5 can refer to technical effects of the measurement methods shown in fig. 2 to 4, which are not described herein again.

The processing module involved in the communication apparatus 500 shown in fig. 5 may be implemented by a processor or a processor-related circuit component, and may be a processor or a processing unit. The transceiver module may be implemented by a transceiver or transceiver-related circuit component, and may be a transceiver or transceiver unit. The transceiver module may include a receiving module and a transmitting module. The receiving module is used for receiving a switching command sent by the network equipment. The sending module is used for sending signals to the network equipment and/or other equipment. The embodiment of the present application does not specifically limit the specific implementation manner of the transceiver module. The operations and/or functions of the modules in the communication apparatus 500 are respectively for implementing the corresponding flows of the measurement methods shown in fig. 2 to fig. 4, and are not described herein again for brevity.

It is to be understood that, in order to implement the above functions, the network element in the embodiments of the present application includes a corresponding hardware structure and/or software module for performing each function. The elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein may be embodied in hardware or in a combination of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present teachings.

In the embodiment of the present application, the network element may be divided into the functional units according to the above method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

The measurement method provided by the embodiment of the present application is described in detail above with reference to fig. 2 to 4. The network device provided by the embodiment of the present application is described in detail below with reference to fig. 6.

Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 6, the network device 600 includes: a processing module 610 and a transceiver module 620. The network device 600 may be used to implement the functionality of the network devices in the source cell and the target cell referred to in the method embodiments described above. The network device 600 may be a stand-alone network device, such as a base station, or a component in a network device, such as a chip or a system-on-chip.

In one possible design, network device 600 acts as the network device in the source cell.

A processing module 610, configured to generate a first signaling; the first signaling is used to instruct at least one terminal device to perform a dual activation protocol stack DAPS cell handover.

The transceiver module 620 is configured to transmit a first signaling to at least one terminal device.

In yet another possible design, network device 600 may act as a network device in a target cell.

A processing module 610, configured to generate a second signaling; the second signaling is used for instructing at least one terminal device to disconnect from a source cell, and the source cell is a cell which provides service for the at least one terminal device before cell handover.

The transceiving module 620 is configured to send the second signaling to the at least one terminal device.

Optionally, the network device 600 shown in fig. 6 may further include a storage module (not shown in fig. 6) that stores programs or instructions. The program or instructions, when executed by the processing module, enable the network device 600 shown in fig. 6 to perform the measurement method shown in fig. 2 to 4.

Technical effects of the network device 600 shown in fig. 6 can refer to technical effects of the measurement methods shown in fig. 2 to 4, which are not described herein again.

The processing modules involved in the network device 600 shown in fig. 6 may be implemented by a processor or processor-related circuit components, which may be a processor or a processing unit. The transceiver module may be implemented by a transceiver or transceiver-related circuit components, and may be a transceiver or a transceiver unit. The transceiver module may include a receiving module and a transmitting module. The receiving module is used for receiving an uplink signal sent by at least one terminal device. The sending module is used for sending the first signaling and/or the second signaling to at least one terminal device. The embodiment of the present application does not specifically limit the specific implementation manner of the transceiver module. The operations and/or functions of the modules in the network device 600 are respectively for implementing the corresponding flows of the measurement methods shown in fig. 2 to fig. 4, and are not described herein again for brevity.

The embodiment of the application also provides a communication device, and the communication device can be terminal equipment or a circuit. The communication device may be configured to perform the actions performed by the terminal device in the above-described method embodiments.

Fig. 7 is a schematic structural diagram of a communication device provided in the embodiment of the present application. As shown in fig. 7, the communication apparatus 700 may be a terminal device. For ease of understanding and illustration, in fig. 7, the terminal device is exemplified by a mobile phone. As shown in fig. 7, the communication device 700 includes a processor and may further include a memory, and of course, may further include a radio frequency circuit, an antenna, an input/output device, and the like. The processor is mainly used for processing a communication protocol and communication data, controlling the communication device 700, executing a software program, processing data of the software program, and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by users and outputting data to the users. It should be noted that some kinds of communication devices 700 may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device 700, the rf circuit receives an rf signal through the antenna, converts the rf signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 7. In an actual communication device 700, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the rf circuit having the transceiving function may be regarded as a transceiving unit of the communication device 700, and the processor having the processing function may be regarded as a processing unit of the communication device 700. As shown in fig. 7, the communication apparatus 700 includes a transceiving unit 710 and a processing unit 720. The transceiving unit 710 may also be referred to as a transceiver, a transceiving means, a transceiving circuit, and the like. Processing unit 720 may also be referred to as a processor, processing board, processing module, processing device, or the like. Optionally, a device for implementing the receiving function in the transceiver 710 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiver 710 may be regarded as a transmitting unit, that is, the transceiver 710 includes a receiving unit and a transmitting unit. A receiving unit may also be referred to as a receiver, a receiving device, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, a transmitting device, a transmitting circuit, or the like.

It should be understood that the transceiver unit 710 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the above method embodiments, and the processing unit 720 is configured to perform other operations besides the transceiving operation on the terminal device in the above method embodiments.

For example, in a possible implementation manner, the transceiver 710 is configured to perform a receiving operation on the terminal device side in S201 in fig. 2, and/or the transceiver 710 is further configured to perform other transceiving steps on the terminal device side in the embodiment of the present application. The processing unit 720 is configured to execute S202 in fig. 2, and/or the processing unit 720 is further configured to execute other processing steps on the terminal device side in this embodiment.

For another example, in another implementation manner, the transceiver 710 is configured to perform a receiving operation on the terminal device side in S301 in fig. 3, and/or the transceiver 720 is further configured to perform other transceiving steps on the terminal device side in this embodiment. The processing unit 720 is configured to execute S302 in fig. 3, and/or the processing unit 720 is further configured to execute other processing steps on the terminal device side in the embodiment of the present application.

For another example, in another implementation manner, the transceiver 710 is configured to perform S401 in fig. 4, and/or the transceiver 710 is further configured to perform other transceiving steps on the terminal device side in the embodiment of the present application. The processing unit 720 is configured to execute S402a and S402b in fig. 4, and/or the processing unit 720 is further configured to execute other processing steps on the terminal device side in this embodiment of the present application.

When the communication device 700 is a chip-like device or circuit, the communication device 700 may include a transceiving unit and a processing unit. The transceiving unit can be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

Fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 8, the communication device includes at least one processor 810 and at least one interface circuit 820. The processor 810 and the interface circuit 820 may be interconnected by wires. For example, interface circuit 820 may be used to receive signals from other devices. Also for example, interface circuit 820 may be used to send signals to other devices, such as processor 810. Illustratively, the interface circuit 820 may read instructions stored in the memory and send the instructions to the processor 810. The instructions, when executed by the processor 810, may cause the communication device to perform the various steps in the measurement methods in the embodiments described above. Of course, the communication apparatus may also include other discrete devices, which is not specifically limited in this embodiment of the present application.

Fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 9, the network device 900 includes one or more radio frequency units, such as a Remote Radio Unit (RRU) 910 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 920. The RRU 910 may be referred to as a transceiver module, which corresponds to the transceiver module 620 in fig. 6, and optionally, the transceiver module may also be referred to as a transceiver, a transceiver circuit, or a transceiver, which may include at least one antenna 911 and a radio frequency unit 912. The RRU 910 is mainly used for transceiving radio frequency signals and converting radio frequency signals into baseband signals, for example, for sending first signaling and/or second signaling to a terminal device. The BBU 910 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 910 and the BBU 920 may be physically disposed together or may be physically disposed separately, i.e., distributed base stations.

The BBU 920 is a control center of a base station, and may also be referred to as a processing module, and may correspond to the processing module 610 in fig. 6, and is mainly used for completing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing module) may be configured to control the base station to perform an operation procedure related to the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.

In an example, the BBU 920 may be formed by one or more boards, and the boards may jointly support a radio access network of a single access system (e.g., an LTE network), or may respectively support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks). The BBU 920 also includes a memory 921 and a processor 922. The memory 921 is used to store the necessary instructions and data. The processor 922 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure related to the network device in the above method embodiment. The memory 921 and processor 922 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

The embodiment of the application provides a communication system, which comprises at least one terminal device, a first network device and a second network device.

Wherein at least one terminal device is adapted to perform the measurement method as described above in fig. 2, 3 and 4.

The first network equipment is used for sending a first signaling to at least one terminal equipment; the first signaling is used to instruct at least one terminal device to perform a dual activation protocol stack DAPS cell handover.

The second network equipment is used for sending a second signaling to at least one terminal equipment; the second signaling is used to instruct the at least one terminal device to disconnect from the source cell. The source cell is a cell serving at least one terminal device before cell handover.

The communication system may further include other devices or apparatuses, which is not limited in this embodiment.

An embodiment of the present application further provides a chip system, including: a processor coupled to a memory, the memory for storing a program or instructions, which when executed by the processor, causes the system-on-chip to implement the method in any of the method embodiments described above.

Optionally, the system on a chip may have one or more processors. The processor may be implemented by hardware or by software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

Optionally, the memory in the system-on-chip may also be one or more. The memory may be integrated with the processor or may be separate from the processor, which is not limited in this application. For example, the memory may be a non-transitory processor, such as a read only memory ROM, which may be integrated with the processor on the same chip or separately disposed on different chips, and the type of the memory and the arrangement of the memory and the processor are not particularly limited in this application.

The system-on-chip may be, for example, a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

It should be understood that the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

Embodiments of the present application further provide a storage medium for storing instructions for the above-mentioned communication apparatus.

The embodiment of the present application further provides a computer-readable storage medium, in which computer-readable instructions are stored, and when the computer-readable instructions are read and executed by a computer, the computer is enabled to execute the method in any of the above method embodiments.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed, the method in any of the above method embodiments is implemented.

Embodiments of the present application also provide a computer program product, such as a computer readable storage medium, including a program designed to perform the steps performed by the communication apparatus in the above embodiments.

It should be understood that the processor mentioned in the embodiments of the present application may be a Central Processing Unit (CPU), and may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data Rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), SLDRAM (synchronous DRAM), and direct rambus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) is integrated in the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash memory, read Only Memory (ROM), erasable Programmable Read Only Memory (EPROM), electrically Erasable Programmable Read Only Memory (EEPROM), registers, a hard disk, a removable disk, a compact disc read only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC).

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of measurement, the method comprising:

the terminal equipment receives a first signaling; the first signaling is used for indicating the terminal equipment to execute DAPS cell handover of a dual activation protocol stack;

during the period of switching the cells according to the first signaling, the terminal equipment performs RRM (radio resource management) measurement of a first carrier and a second carrier; the first carrier is a carrier where a source cell is located, and the second carrier is a carrier where a target cell is located; the source cell is a cell which provides service for the terminal equipment before cell switching, and the target cell is a cell which provides service for the terminal equipment after cell switching.

2. The method of claim 1, wherein the terminal device performs RRM measurements for the first carrier and the second carrier, comprising:

the terminal device performs a first RRM measurement on the source cell and performs a second RRM measurement on the target cell.

3. The method of claim 1, wherein the first carrier and the second carrier are the same or different.

4. The method of claim 2, wherein the first carrier and the second carrier are the same or different.

5. The method according to any of claims 1-4, wherein the first carrier and the second carrier are different, and wherein the performing RRM measurements for the first carrier and the second carrier by the terminal device comprises:

the terminal device performs first RRM measurement on the source cell and the first cell, and performs second RRM measurement on the target cell and the second cell; the carrier where the first cell is located is a first carrier, and the carrier where the second cell is located is a second carrier.

6. The method according to any of claims 1-4, wherein the first carrier and the second carrier are the same, and wherein the performing RRM measurements of the first carrier and the second carrier by the terminal device comprises:

the terminal device performs a third RRM measurement on the source cell, the target cell, and a third cell; and the carrier where the third cell is located is the first carrier or the second carrier.

7. The method according to any one of claims 1-4, further comprising:

the terminal equipment acquires carrier information; the carrier information includes one or more of the following items: and measuring the central frequency point, the subcarrier interval, the bandwidth and the initial frequency domain position.

8. The method according to claim 7, wherein the first carrier and the second carrier are different, and carrier information includes a measurement center frequency point, the method further comprising:

the terminal equipment determines a first cell which is the same as the measurement center frequency point of the source cell according to the carrier information, and performs first RRM measurement on the source cell and the first cell;

and the terminal equipment determines a second cell which is the same as the measurement center frequency point of the target cell according to the carrier information, and performs second RRM measurement on the target cell and the second cell.

9. The method of claim 7, wherein the first carrier and the second carrier are different, and carrier information includes a measurement center frequency point and a subcarrier spacing, the method further comprising:

the terminal equipment determines a first cell with the same measurement center frequency point and subcarrier interval as the source cell according to the carrier information, and performs first RRM measurement on the source cell and the first cell;

and the terminal equipment determines a second cell with the same measurement center frequency point and subcarrier interval as those of the target cell according to the carrier information, and performs second RRM measurement on the target cell and the second cell.

10. The method of claim 7, wherein the first carrier and the second carrier are different, and wherein carrier information comprises a starting frequency domain position, a bandwidth, and a subcarrier spacing, the method further comprising:

the terminal equipment determines a measurement center frequency point corresponding to the initial frequency domain position and the bandwidth according to the initial frequency domain position and the bandwidth;

the terminal equipment determines a first cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the source cell, and performs first RRM measurement on the source cell and the first cell;

and the terminal equipment determines a second cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the target cell, and performs second RRM measurement on the target cell and the second cell.

11. The method according to claim 7, wherein the first carrier and the second carrier are the same, and carrier information includes a measurement center frequency point, the method further comprising:

and the terminal equipment determines a third cell which has the same measurement center frequency point as the source cell or the target cell according to the carrier information, and performs third RRM measurement on the source cell, the target cell and the third cell.

12. The method according to claim 7, wherein the first carrier and the second carrier are the same, and the carrier information includes a measurement center frequency point and a subcarrier spacing, the method further comprising:

and the terminal equipment determines a third cell with the same measurement center frequency point and subcarrier interval as those of the source cell or the target cell according to the carrier information, and performs third RRM measurement on the source cell, the target cell and the third cell.

13. The method of claim 7, wherein the first carrier and the second carrier are the same, wherein carrier information comprises a starting frequency domain position, a bandwidth, and a subcarrier spacing, and wherein the method further comprises:

and the terminal equipment determines a third cell with the same measurement center frequency point, bandwidth and subcarrier interval as those of the source cell or the target cell, and performs third RRM measurement on the source cell, the target cell and the third cell.

14. The method according to any of claims 1-4, wherein the period for switching the cell according to the first signaling is from the terminal device receiving the first signaling to the terminal device receiving the second signaling; the second signaling is used for indicating the terminal equipment to disconnect from the source cell.

15. A measuring device, characterized in that the device comprises: a transceiver module and a processing module;

the transceiver module is used for receiving a first signaling; the first signaling is used for indicating to execute DAPS cell switching of a dual activation protocol stack;

the processing module is configured to perform RRM measurement on a first carrier and a second carrier during cell handover according to the first signaling; the first carrier is a carrier where a source cell is located, and the second carrier is a carrier where a target cell is located; the source cell is a cell providing service before cell switching, and the target cell is a cell providing service after cell switching.

16. The apparatus of claim 15,

the processing module is specifically configured to perform a first RRM measurement on the source cell and perform a second RRM measurement on the target cell.

17. The apparatus of claim 15, wherein the first carrier and the second carrier are the same or different.

18. The apparatus of claim 16, wherein the first carrier and the second carrier are the same or different.

19. The apparatus of any of claims 15-18, wherein the first carrier and the second carrier are not the same;

the processing module is further configured to perform a first RRM measurement on the source cell and the first cell, and perform a second RRM measurement on the target cell and the second cell; the carrier where the first cell is located is a first carrier, and the carrier where the second cell is located is a second carrier.

20. The apparatus according to any of claims 15-18, wherein the first carrier and the second carrier are the same;

the processing module is further configured to perform a third RRM measurement on the source cell, the target cell, and a third cell; and the carrier where the third cell is located is the first carrier or the second carrier.

21. The apparatus according to any one of claims 15 to 18,

the receiving and sending module is also used for acquiring carrier information; the carrier information includes one or more of the following items: and measuring the central frequency point, the subcarrier interval, the bandwidth and the initial frequency domain position.

22. The apparatus of claim 21, wherein the first carrier and the second carrier are different, and carrier information comprises a measurement center frequency point;

the processing module is further configured to determine, according to the carrier information, a first cell that is the same as a measurement center frequency of the source cell, and perform first RRM measurement on the source cell and the first cell;

and determining a second cell which is the same as the measurement center frequency point of the target cell according to the carrier information, and performing second RRM measurement on the target cell and the second cell.

23. The apparatus of claim 21, wherein the first carrier and the second carrier are different, and carrier information comprises a measurement center frequency point and a subcarrier spacing;

the processing module is further configured to determine, according to the carrier information, a first cell having a same measurement center frequency point and subcarrier interval as the source cell, and perform first RRM measurement on the source cell and the first cell;

and determining a second cell with the same measurement center frequency point and subcarrier interval as the target cell according to the carrier information, and performing second RRM measurement on the target cell and the second cell.

24. The apparatus of claim 21, wherein the first carrier and the second carrier are different, and wherein carrier information comprises a starting frequency domain position, a bandwidth, and a subcarrier spacing;

the processing module is further configured to determine a measurement center frequency point corresponding to the starting frequency domain position and the bandwidth according to the starting frequency domain position and the bandwidth;

the processing module is further configured to determine a first cell having a same measurement center frequency, bandwidth, and subcarrier spacing as those of the source cell, and perform a first RRM measurement on the source cell and the first cell;

and determining a second cell with the same measurement center frequency point, bandwidth and subcarrier interval as the target cell, and performing second RRM measurement on the target cell and the second cell.

25. The apparatus according to claim 21, wherein the first carrier and the second carrier are the same, and carrier information includes a measurement center frequency point;

the processing module is further configured to determine, according to the carrier information, a third cell having a same measurement center frequency as that of the source cell or the target cell, and perform third RRM measurement on the source cell, the target cell, and the third cell.

26. The apparatus of claim 21, wherein the first carrier and the second carrier are the same, and carrier information comprises a measurement center frequency point and a subcarrier spacing;

the processing module is further configured to determine, according to the carrier information, a third cell having a same measurement center frequency point and subcarrier interval as those of the source cell or the target cell, and perform a third RRM measurement on the source cell, the target cell, and the third cell.

27. The apparatus of claim 21, wherein the first carrier and the second carrier are the same, and wherein carrier information comprises a starting frequency domain position, a bandwidth, and a subcarrier spacing;

the processing module is further configured to determine, according to the starting frequency domain position and the bandwidth, a measurement center frequency point corresponding to the starting frequency domain position and the bandwidth;

the processing module is further configured to determine a third cell having a same measurement center frequency, bandwidth, and subcarrier spacing as those of the source cell or the target cell, and perform a third RRM measurement on the source cell, the target cell, and the third cell.

28. The apparatus according to any of claims 15-18, wherein the period for switching the cell according to the first signaling is from the receiving/transmitting module receiving the first signaling to the receiving/transmitting module receiving the second signaling; wherein the second signaling is used for indicating disconnection of the source cell.

29. A communications apparatus, comprising: a processor and a memory;

the memory for storing a computer program;

the processor configured to execute a computer program stored in the memory to cause the communication device to perform the method of any one of claims 1 to 14.

30. A communications apparatus, comprising: a processor and an interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor is configured to execute the code instructions to perform the method of any one of claims 1 to 14.

31. A communication system includes at least one terminal device, a first network device and a second network device; wherein the at least one terminal device is configured to perform the method of any one of claims 1 to 14; the first network equipment is used for sending a first signaling to the at least one terminal equipment; the first signaling is used for instructing the at least one terminal device to execute DAPS cell handover; the second network device is configured to send a second signaling to the at least one terminal device; the second signaling is used for instructing the at least one terminal device to disconnect from the source cell; the source cell is a cell that provides service for the at least one terminal device before cell handover.

32. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, implements the method according to any one of claims 1 to 14.