CN111800818A - Communication method and device therefor - Google Patents

Abstract

Embodiments of the present application provide a communication method and a device thereof, wherein the method includes: an access network device determines configuration information, where the configuration information is used to indicate that a user terminal is in an idle state or an inactive state, and measures a time difference, where the time difference is The time difference between the first cell and the second cell, where the first cell is the serving cell of the user terminal; the access network device sends the configuration information to the user terminal; the user terminal measures the configuration information when receiving the configuration information A synchronization signal of the second cell to obtain a measurement result, the measurement result including information on the time difference between the first cell and the second cell. With the embodiment of the present application, it can be ensured that the user terminal in the connected state can normally complete the measurement, thereby ensuring the validity of the measurement result and the continuity of the service.

Description

Communication method and device therefor

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and a device thereof.

Background technique

A user terminal (such as user equipment (UE)) is in a connected state. When the signal quality of the serving cell of the UE deteriorates to a certain extent, the serving cell of the UE is changed through cell handover or cell reselection to ensure the continuity of the UE service. . Cell handover or cell reselection depends on the measurement results. With the development of mobile communication technology, the current long term evolution-advanced professional (LTE-A Pro) (ie, the 4.5-generation communication technology (4.5-generation, 4.5G)) has begun commercial deployment, and the new air interface (new radio, NR) (that is, the fifth-generation communication technology (5th-generation, ^5G )) is being standardized. The 4.5G system increases the rate and throughput by aggregating more carriers or through multiple connections, which increases the deployment density of base stations. 5G systems will use better frequency bands, and in order to ensure user throughput and mobility, dense base stations will also need to be deployed. In the case of densely deployed base stations in 4.5G systems and 5G systems, the UE is required to measure multiple intra-frequency or inter-frequency cells around it. Multiple communication systems can coexist, for example, a 4.5G system and a 5G system can coexist, which requires the UE to perform inter-system measurements on multiple communication systems. In other words, when the UE performs cell handover or cell reselection, it needs to measure adjacent intra-frequency cells, inter-frequency cells, and inter-system to obtain measurement results.

At present, the concept of synchronization signal block measurement timing configuration (SMTC) is introduced into the 5G system. The SMTC may be a window configured by the network for the UE to determine the positions of synchronization signal blocks (synchronization signal blocks, SSBs) of each cell on a frequency point. The network ensures that the UE can find the SSB of each cell on the frequency point within the SMTC window through the cooperation of various base stations, so that the UE only needs to perform SSB measurement within the SMTC window, and does not need to perform SSB measurement outside the window. Using SMTC, the position of the SSB can be quickly and accurately obtained in a multi-beam scenario, ensuring the measurement effectiveness.

A measurement gap (measurement gap, MGAP) may be a reserved period of time. In some examples, the UE will not send and receive any data during this period, but instead perform inter-frequency measurements during this period. The UE in the connected state can complete the measurement normally only when the SMTC window is completely covered by the MGAP. Otherwise, the measurement cannot be completed normally, thus affecting the measurement result and the continuity of the service. In the case that the window of the SMTC is not completely covered by the MGAP, how to ensure that the UE in the connected state can normally complete the measurement is a technical problem to be solved urgently.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a communication method and a device thereof, which can optimize the validity of measurement results and the continuity of services.

A first aspect of the embodiments of the present application provides a communication method, and the communication method includes:

The user terminal receives configuration information from the access network device, and the configuration information is used to instruct the user terminal to measure the time difference when the user terminal is in an idle state or in an inactive state, where the time difference is the time difference between the first cell and the second cell. the first cell is the serving cell of the user terminal;

The user terminal measures the synchronization signal of the second cell, and obtains a measurement result, where the measurement result includes information of a time difference between the first cell and the second cell.

In the first aspect of the embodiments of the present application, when the user terminal is in an idle state or inactive state according to the configuration information, the user terminal measures the synchronization signal of the second cell, and obtains information of the time difference between the first cell and the second cell, so that the user terminal can The access network device reports the measurement result, which is convenient for the access network device to adjust the SMTC window according to the measurement result, so that the SMTC window is completely covered by the MGAP, so as to ensure that the user terminal in the connected state can normally complete the measurement and ensure the validity of the measurement result. and business continuity.

The second cell is the cell to be measured, and the number of the second cell may be one or more, and the specific number is not limited. The second cell may be an intra-frequency cell of the first cell, an inter-frequency cell of the first cell, or an inter-system cell of the first cell. The second cell may be designated by the access network device, or may be independently determined by the user terminal.

In a possible implementation manner, the foregoing configuration information includes frequency information of the second cell, where the frequency information may indicate a frequency point. At this time, the configuration information may indicate that when the user terminal is in an idle state or an inactive state, the synchronization signals of all cells on the frequency point are measured to obtain information of the time difference between each cell and the first cell. The configuration information can also instruct the user terminal to measure the synchronization signal of a certain cell on the frequency point when the user terminal is in the idle state or inactive state. Information about the time difference between cells. The access network device may also not specify which cell on the frequency point to measure.

In a possible implementation manner, the above configuration information includes identification information of the second cell, which is used to identify the cell to be measured. When the configuration information specifies that the user terminal is in an idle state or an inactive state, the access network device will The synchronization signal of the cell is measured, so that the user terminal can measure the time difference in a targeted manner.

In a possible implementation manner, the above configuration information only instructs the user terminal to measure the time difference when the user terminal is in an idle state or inactive state, but does not specify which cell or which cells the user terminal measures, and the user terminal can independently determine For which cell or cells the synchronization signal is measured.

In a possible implementation manner, the above configuration information is carried in the system message block of the broadcast message, that is, the access network device broadcasts the configuration information to the user terminal through the system message block of the broadcast message, so that the user terminal can measure the synchronization of the second cell signal to obtain measurement results.

In a possible implementation manner, the above configuration information is carried in the RRC connection release message, that is, the access network device sends the configuration information to the user terminal through the RRC connection release message, and the user terminal receives the RRC connection The release message enters the idle state or the inactive state, so that when the user terminal is in the idle state or the inactive state, the time difference is measured.

In a possible implementation manner, after obtaining the measurement result, the user terminal sends the measurement result to the access network device, so that the access network device adjusts the time window according to the measurement result, so that the SMTC window is completely covered by the MGAP.

In a possible implementation manner, the user terminal sends the measurement result to the access network device through a radio resource control establishment request message or a radio resource control recovery request message. That is, when the user terminal establishes the RRC connection or restores the RRC connection, it sends the measurement result to the access network device, so that the access network device can adjust the time window, so that the user terminal can complete the measurement normally when it is in the connected state. , thus ensuring the validity of measurement results and business continuity.

In a possible implementation manner, the user terminal sends the measurement result to the access network device after the radio resource control is established successfully or the radio resource control is restored successfully, so that the access network device can adjust the time window, so that the user terminal is in the In the connected state, the measurement can be completed normally, thereby ensuring the validity of the measurement results and the continuity of the service.

In a possible implementation manner, the user terminal sends the measurement result to the access network device when receiving the query message from the access network device. The query message of the access network device can be used to query the measurement results of a specified cell, and can also be used to query the measurement results of all cells measured by the user terminal. The user terminal feeds back the measurement result to the access network device according to the query message, so that the access network device can adjust the time window, so that the user terminal can complete the measurement normally when it is in the connected state, thereby ensuring the validity of the measurement result and the continuity of the service. sex.

In a possible implementation manner, the user terminal receives time window information from the access network device, where the time window information includes an adjusted time window, and the time window information is used to indicate that when the user terminal is in a connected state, the adjusted time window information The measurement of the synchronization signal within the time window can ensure that the measurement can be completed normally when the user terminal is in the connected state, thereby ensuring the validity of the measurement result and the continuity of the service.

A second aspect of the embodiments of the present application provides a communication device, where the communication device has a function of implementing the method provided in the first aspect. The communication device may be a user terminal. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible implementation manner, the communication device includes a processing module and a transceiver module; the transceiver module is configured to receive configuration information from the access network device, where the configuration information is used to indicate that the user terminal is in an idle state or an inactive state , measure the time difference, the time difference is the time difference between the first cell and the second cell, the first cell is the serving cell of the user terminal; the processing module is used to measure the synchronization signal of the second cell, and obtain the measurement result , the measurement result includes information on the time difference between the first cell and the second cell.

In one possible implementation, the communication device includes a processor, a transceiver, and a memory, wherein a computer program is stored in the memory, the computer program includes program instructions, and the processor is configured to invoke program code to perform the following operations: control The transceiver receives configuration information from the access network equipment, and the configuration information is used to instruct the user terminal to measure the time difference when the user terminal is in an idle state or an inactive state, and the time difference is the time difference between the first cell and the second cell. The first cell is the serving cell of the user terminal; the synchronization signal of the second cell is measured to obtain a measurement result, where the measurement result includes information of the time difference between the first cell and the second cell.

Based on the same inventive concept, since the principle and beneficial effect of the communication device to solve the problem can refer to the method described in the first aspect and the beneficial effect brought by it, the implementation of the device can refer to the implementation of the method, and the repetition will not be repeated. .

A third aspect of the embodiments of the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method of the foregoing first aspect is implemented.

A fourth aspect of the embodiments of the present application provides a computer program product including instructions, which, when executed on a computer, causes the computer to execute the method of the first aspect.

A fifth aspect of the embodiments of the present application provides a communication method, and the communication method includes:

The access network device determines configuration information, which is used to indicate that the user terminal is in an idle state or inactive state, and measures the time difference, where the time difference is the time difference between the first cell and the second cell, and the first cell is the user terminal. service area;

The access network device sends configuration information to the user terminal.

In the fifth aspect of the embodiment of the present application, the access network device ensures and sends the configuration information to the user terminal, so that the user terminal can measure the synchronization signal of the second cell when the user terminal is in the idle state or inactive state according to the configuration information, and obtain the first Information about the time difference between the cell and the second cell, so that the user terminal can report the measurement result to the access network device, so that the access network device can adjust the SMTC window according to the measurement result, so that the SMTC window is completely covered by MGAP, so as to ensure The user terminal in the connected state can normally complete the measurement, ensuring the validity of the measurement result and the continuity of the service.

In a possible implementation manner, the above configuration information includes frequency information of the second cell, and the frequency information may indicate a frequency point, which is used to indicate that when the user terminal is in an idle state or an inactive state, all cells on the frequency point The synchronization signal of the frequency point is measured, or the synchronization signal of the designated cell on the frequency point is measured.

In a possible implementation manner, the above configuration information includes identification information of the second cell, which is used to instruct the user terminal to measure the synchronization signal of the designated second cell when the user terminal is in an idle state or an inactive state to obtain a measurement result.

In a possible implementation manner, the access network device sends configuration information to the user terminal through the system message block of the broadcast message, that is, the configuration information is carried in the system message block of the broadcast message.

In a possible implementation manner, the access network device sends configuration information to the user terminal through the RRC connection release message, that is, the configuration information is carried in the RRC connection release message.

In a possible implementation manner, the access network device receives the measurement result from the user terminal, and the measurement result includes information of the time difference between the first cell and the second cell; adjusts the time window according to the measurement result to obtain the time window information, The time window information includes the adjusted time window, and the time window information is used to indicate that when the user terminal is in the connected state, the synchronization signal is measured within the adjusted time window; the time window information is sent to the user terminal, so that the user terminal is in the connected state , the synchronization signal is measured within the adjusted time window. Due to the adjusted time window, the SMTC window is completely covered by the MGAP, thereby ensuring that the user terminal in the connected state can normally complete the measurement, ensuring the validity of the measurement result and the continuity of the service.

A sixth aspect of the embodiments of the present application provides a communication device, where the communication device has a function of implementing the method provided in the fifth aspect. The communication device may be an access network device. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible implementation manner, the communication device includes a processing module and a transceiver module; the processing module is configured to determine configuration information, where the configuration information is used to indicate that the user terminal is in an idle state or an inactive state, and measure the time difference, The time difference is the time difference between the first cell and the second cell, and the first cell is the serving cell of the user terminal; the transceiver module is configured to send configuration information to the user terminal.

In one possible implementation, the communication device includes a processor, a transceiver, and a memory, wherein a computer program is stored in the memory, the computer program includes program instructions, and the processor is configured to invoke the program code to perform the following operations: determine configuration information, the configuration information is used to instruct the user terminal to measure the time difference when the user terminal is in an idle state or an inactive state, the time difference is the time difference between the first cell and the second cell, and the first cell is the serving cell of the user terminal; control The transceiver sends configuration information to the user terminal.

Based on the same inventive concept, since the principle and beneficial effect of the communication device to solve the problem can refer to the method described in the fifth aspect and the beneficial effect brought by it, the implementation of the device can refer to the implementation of the method, and the repetition will not be repeated. .

A seventh aspect of an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program implements the method of the fifth aspect when the computer program is executed by a processor.

An eighth aspect of the embodiments of the present application provides a computer program product including instructions, which, when executed on a computer, causes the computer to execute the method of the fifth aspect.

A ninth aspect of an embodiment of the present application provides a communication system, where the communication system includes a user terminal and an access network device,

The access network device is configured to determine configuration information, where the configuration information is used to instruct the user terminal to measure a time difference when the user terminal is in an idle state or an inactive state, where the time difference is the time difference between the first cell and the second cell, and the first The cell is the serving cell of the user terminal; the configuration information is sent to the user terminal;

The user terminal is configured to receive configuration information from the access network device, where the configuration information is used to instruct the user terminal to measure a time difference when the user terminal is in an idle state or an inactive state, where the time difference is the difference between the first cell and the second cell The first cell is the serving cell of the user terminal; the synchronization signal of the second cell is measured, and a measurement result is obtained, and the measurement result includes information of the time difference between the first cell and the second cell.

The access network device is configured to execute the communication method provided by the fifth aspect, and the user terminal is configured to execute the communication method provided by the first aspect.

In a possible implementation manner, the user terminal is further configured to send a measurement result to the access network device; the access network device is further configured to adjust the time window according to the measurement result to obtain time window information, the time window The information includes the adjusted time window, and the time window information is used to indicate that when the user terminal is in the connected state, the synchronization signal is measured within the adjusted time window; the time window information is sent to the user terminal.

Description of drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the background technology, the accompanying drawings required in the embodiments or the background technology of the present application will be described below.

1 is a schematic flowchart of a radio resource management measurement in a dual-connection scenario;

Fig. 2 is the contrast schematic diagram of the window of SMTC and MGAP;

FIG. 3 is a schematic diagram of a network architecture to which an embodiment of the present application is applied.

FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application;

FIG. 5 is a schematic block diagram of a communication device provided by an embodiment of the present application;

FIG. 6 is another schematic block diagram of a communication device provided by an embodiment of the present application;

FIG. 7 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application;

FIG. 8 is another schematic block diagram of a communication apparatus provided by an embodiment of the present application;

FIG. 9 is still another schematic block diagram of a communication apparatus provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Wherein, in the description of this application, unless otherwise specified, "/" indicates that the objects associated before and after are an "or" relationship, for example, A/B can indicate A or B; in this application, "and/or" "It is only an association relationship that describes an associated object, which means that there can be three kinds of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A exists , B can be singular or plural. Also, in the description of the present application, unless stated otherwise, "plurality" means two or more than two. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple . In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like are not necessarily different.

The following first introduces the technical names or terms involved in the embodiments of the present application.

The SMTC may be a window configured by the network for the UE and used to determine the SSB location of each cell on a frequency point. The network ensures that the UE can find the SSB of each cell on the frequency point within the window of the SMTC through the cooperation between the base stations, so that the UE only needs to perform the SSB measurement within the window of the SMTC, and does not need to perform the SSB measurement outside the window. The search volume of the UE.

MGAP can be a period of time. During this period, the UE will not send or receive any data, but will tune the receiver to the target cell frequency to perform inter-frequency measurement or inter-system measurement. When the MGAP period ends, it will switch to the current service area. Application In the embodiments of the present application, in the MGAP, the UE does not send and receive any data, but performs intra-frequency measurement, inter-frequency measurement, or inter-system measurement.

For intra-frequency measurement, it may be that the current serving cell of the UE and the target cell to be measured are on the same carrier frequency or center frequency. For inter-frequency measurement, the current serving cell of the UE and the target cell to be measured are not on the same carrier frequency. Inter-system measurement may be that the current serving cell of the UE and the target cell to be measured belong to different communication systems, for example, the communication system to which the current serving cell belongs is 4G, and the communication system to which the target cell belongs is 5G.

The system frame number and radio frame boundary timing difference (SFTD) may be the time deviation between the frame boundaries of the serving cell of the UE and the target cell on the frame for the same system frame number. SFTD may represent the time difference between the serving cell and the target cell. Applied in the dual connectivity scenario, the SFTD can represent the time difference between the primary cell and the secondary cell. Applied in the embodiment of the present application, the SFTD may represent the time difference between the first cell and the second cell, where the first cell is the serving cell of the UE, and the second cell is the target cell to be measured.

The idle state may be a state in which the UE and the base station are in a state in which the UE and the base station have not established a radio resource control (radio resource control, RRC) connection. The connected state, also known as the active state, may be the state in which the UE and the base station are in a state in which the UE and the base station establish an RRC connection. The inactive state is also called the third state, the deactivated state, or the inactive state, etc. This name does not constitute a limitation on the embodiments of this application. In the inactive state, the base station connected between the UEs will save the context information of the UE. , so that the UE can quickly recover from the inactive state to the connected state, thereby reducing the delay of communication interruption.

Please refer to FIG. 1 , which is a schematic flowchart of a radio resource management (radio resource management, RRM) measurement in a dual connectivity scenario. The dual-connection scenario includes a UE, a primary base station (master node, MN), and a secondary base station (secondary node, SN). The primary base station and the secondary base station may belong to different communication systems. For example, the primary base station may be a base station in a 5G system, and the secondary base station It may be a base station under the 4G system, or the primary base station may be a base station under the 4G system, and the secondary base station may be a base station under the 5G system. The schematic flowchart shown in FIG. 1 may include the following steps:

Step 1, the primary base station sends an RRC connection reconfiguration message to the UE. Correspondingly, the UE receives the RRC connection reconfiguration message from the primary base station.

When the primary base station and the UE are in a connected state, the primary base station sends an RRC connection reconfiguration message to the UE. The RRC connection reconfiguration message includes measurement configuration information of the secondary base station, so that the UE performs measurement according to the measurement configuration information of the secondary base station, and feeds back a measurement report to the primary base station. Assuming that the secondary base station to be added to dual connectivity is a base station under the 5G system, the measurement configuration information of the secondary base station includes the measurement configuration information of the NR cell, including the system to be measured, frequency, cell information, measurement report reporting conditions, MGAP information And SMTC information, etc.

Step 2, the UE sends an RRC connection reconfiguration complete message to the primary base station. Correspondingly, the primary base station receives the RRC connection reconfiguration complete message from the UE.

The RRC connection reconfiguration complete message is used to indicate that the RRC connection reconfiguration is completed.

Step 3, when the UE receives the RRC connection reconfiguration message, it measures the cell according to the measurement configuration information of the secondary base station, and feeds back the measurement report to the primary base station.

The UE measures the surrounding cells according to the content included in the measurement configuration information of the secondary base station.

When the measurement report reporting conditions are met, the UE feeds back the measurement report to the primary base station. The measurement report may include measurement results such as signal strength and signal quality of the cell.

Step 4, the primary base station selects a secondary base station according to the measurement report, and sends a secondary base station addition request message to the secondary base station. Correspondingly, the secondary base station receives a secondary base station addition request message from the primary base station.

Step 5, the secondary base station agrees to add, and sends a secondary base station addition response message to the primary base station for responding to the secondary base station addition request message. Correspondingly, the primary base station receives the secondary base station addition response message from the secondary base station.

Step 6, the primary base station sends an RRC connection reconfiguration message to the UE. Correspondingly, the UE receives the RRC connection reconfiguration message from the primary base station.

Step 7, the UE sends an RRC connection reconfiguration complete message to the primary base station. Correspondingly, the primary base station receives the RRC connection reconfiguration complete message from the UE.

Step 8, the primary base station sends a secondary base station reconfiguration complete message to the secondary base station. Correspondingly, the secondary base station receives the secondary base station reconfiguration complete message from the primary base station.

Step 9, the UE and the secondary base station perform a random access procedure, so that the UE establishes an RRC connection with the secondary base station.

In FIG. 1 , when the UE is in the connected state, the primary base station sends the secondary base station measurement configuration information to the UE, so that the UE measures according to the secondary base station measurement configuration information, and feeds back the measurement report, so that the primary base station selects the secondary base station. However, since there is no reference time between the primary base station and the secondary base station, for example, there is no reference time between the 4G base station and the 5G base station, this leads to the problem that the SMTC information and the MGAP information are not aligned, which in turn affects the normal completion of the measurement by the UE and the validity of the measurement report. sex. There is no base station time between the primary base station and the secondary base station. In a special scenario, the frequency division duplexing (FDD) base station with frequency synchronization, the SMTC information configured for the UE is not time synchronized between the networks or the timing is not obtained. In the worst case, there will be a problem that the SMTC information and the MGAP information are not aligned.

The SMTC information is not aligned with the MGAP information, please refer to the schematic diagram of the comparison between the window of the SMTC and the MGAP shown in FIG. 2 . The schematic diagram shown in Figure 2 includes three scenarios:

Scenario 1, although the SMTC window is not completely aligned with the MGAP, the SMTC window is completely covered by the MGAP. In this scenario, when the UE is in the connected state, the measurement can be completed normally.

Scenario 2, the window of SMTC overlaps with MGAP, that is, part of the window of SMTC is covered by MGAP, while the rest is not covered by MGAP. The remaining part not covered by MGAP cannot be measured, so that the UE cannot normally complete the measurement.

In scenario 3, the window of the SMTC and the MGAP do not overlap at all, and the UE cannot normally complete the measurement in this scenario.

The above scenario is only an example, and the example in FIG. 2 does not exclude other possibilities, such as the case where the SMTC window overlaps with the MGAP, or the case where the SMTC window is longer than the MGAP.

In view of the fact that there is no reference time between base stations, so that the window of SMTC is not completely covered by MGAP, the embodiment of the present application provides a communication method and device thereof, through which the UE is in an idle state or inactive state, to the first cell Measure the time difference with the second cell, obtain the measurement result, and feed back the measurement result to the base station, so that the base station can adjust the SMTC information according to the measurement result, so that the SMTC window is covered by the MGAP, so as to ensure that the UE in the connected state can normally complete the measurement , to ensure the validity of measurement results and business continuity.

Please refer to FIG. 3 , which is a schematic diagram of a network architecture to which an embodiment of the present application is applied. The schematic diagram of the network architecture includes a user terminal 10 and an access network device 20 .

The user terminal 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions; it may also include UE, subscriber unit, cellular phone (cellular phone), smart phone (smart phone), wireless data card, personal digital assistant (personal digital assistant, PDA) computer, tablet computer, wireless modem (modem), handheld device (handheld), laptop computer (laptop) computer), cordless phone (cordlessphone) or wireless local loop (wireless local loop, WLL) station, machine type communication (machine type communication, MTC) terminal, mobile station (mobile station, MS), terminal device (terminal device) or medium Following the user equipment and so on. The relay user equipment may be, for example, a 5G residential gateway (residential gateway, RG). For the convenience of description, in the embodiments of the present application, the devices mentioned above are collectively referred to as user terminals, and the user terminals are introduced by taking the UE as an example.

The access network device 20 may be an evolved base station (evolved Node basestation, eNB or eNodeB) in a long term evolution (long term evolution, LTE) system, or may be an upgraded eNB, that is, a next-generation evolved base station node (next). generation eNodeB, ng-eNB), may also be an access network device such as a next generation Node Basestation (gNB) in a 5G system, or may be an access network device in a future communication system.

Application In the embodiment of the present application, the user terminal 10 supports time difference measurement, for example, supports SFTD measurement, and the access network device 20 may select a user terminal that supports SFTD measurement according to the capability information of each user terminal.

Applied in the embodiment of the present application, the access network device 20 determines configuration information, the configuration information indicates that when the user terminal 10 is in an idle state or an inactive state, the time difference is measured, and the time difference is the time difference between the first cell and the second cell. time difference, the first cell is the serving cell of the user terminal. The access network device 20 sends the configuration information to the user terminal 10 . When receiving the configuration information, the user terminal 10 measures the synchronization signal of the second cell according to the configuration information, and obtains a measurement result, where the measurement result includes information of the time difference between the first cell and the second cell.

After that, the user terminal 10 may report the measurement result to the access network device 20, so that the access network device 20 adjusts the SMTC information according to the measurement result, so that the SMTC information is covered by the MGAP information, so as to ensure that the user terminal in the connected state can complete the normal operation measurement to ensure the validity of measurement results and business continuity.

It can be understood that the second cell is the cell to be measured, which may be the cell to be measured designated by the access network device 20 or the cell to be measured that is independently determined by the user terminal 10 . The number of the second cells may be one or multiple, and the specific number depends on the specific situation.

The embodiments of the present application can be applied to a dual-connection scenario, especially to a scenario where there is no reference time between dual-connected base stations. It can also be used in scenarios of handover between different systems, such as the scenario of handover between 4G base stations and 5G base stations, and can also be applied to scenarios of base station handover between the same systems, such as the scenario of handover between 5G base stations and 5G base stations.

In addition, the network architecture and application scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. With the evolution of the network architecture and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

It should be noted that the names of messages or information involved in the embodiments of the present application are used for examples and do not constitute limitations to the embodiments of the present application.

Please refer to FIG. 4 , which is a schematic flowchart of a communication method provided by an embodiment of the present application. The schematic flowchart may include, but is not limited to, the following steps:

Step 101, the access network device determines configuration information.

The configuration information is used to indicate that when the UE is in an idle state or an inactive state, the time difference is measured, and the time difference is the time difference between the first cell and the second cell. The first cell is the serving cell of the UE, that is, the current time is The cell provided by the UE, and the second cell is the cell to be measured, which may be designated by the access network device, or may not be designated by the access network device, but determined by the UE independently.

In a possible implementation manner, the above configuration information may only indicate that when the UE is in an idle state or inactive state, to measure the time difference, but does not indicate which second cell or which second cell is between the first cell and the second cell. time difference is measured. In this case, after receiving the configuration information, the UE may autonomously determine which second cell or which second cells to measure the time difference when it is in an idle state or an inactive state. For example, the UE determines the second cell to be measured according to system information block (system information block, SIB) information of the first cell, and specifically may determine the to-be-measured cell according to at least one of SIB2 information, SIB4 information, or SIB5 information of the first cell the second district. The SIB2 information includes cell access information and wireless channel configuration parameters, the SIB4 information includes intra-frequency adjacent cell reselection information, and the SIB5 information includes inter-frequency reselection information.

In another possible implementation manner, the above configuration information includes frequency information of the second cell, that is, information including the frequency point where the second cell is located, and is used to indicate the frequency point where the second cell is located. At this time, the configuration information can be used to indicate that when the UE is in an idle state or inactive state, time difference measurement is performed on all cells on the frequency point; it can also be used to indicate that when the UE is in an idle state or inactive state, the frequency point is measured. When the time difference is measured in a certain cell or some cells on the frequency point, the designated cell is the second cell; it can also be used to indicate that when the UE is in the idle or inactive state, the time difference measurement is performed on the cell on the frequency point, but It does not explicitly indicate which cell or cells to perform the time difference measurement, and the UE can autonomously determine the second cell to be measured on the frequency point. When the UE autonomously determines the second cell to be measured on the frequency point, it may also determine according to at least one of SIB2 information, SIB4 information or SIB5 information of the first cell.

In another possible implementation manner, the above configuration information includes identification information of the second cell, where the identification information may be a cell identification (identity, ID), a cell number, etc., for identifying the cell to be measured. It can be understood that, in this manner, the access network device specifies which cell or cells the UE performs time difference measurement on.

The time difference between the first cell and the second cell may be the SFTD between the first cell and the second cell, and the above configuration information may be SFTD measurement indication information, which is used to indicate that when the UE is in an idle state or an inactive state, the The SFTD between one cell and the second cell is measured.

In the case of determining the configuration information, the access network device may determine the carrier of the configuration information, that is, determine which message is used to send the configuration information to the UE, so that the access network device sends the configuration information to the UE.

Step 102, the access network device sends configuration information to the UE. Correspondingly, the UE receives configuration information from the access network device.

In a possible implementation manner, the access network device sends the configuration information to the UE through the system message block of the broadcast message. Specifically, the access network device sends configuration information to the UE through SIB2, SIB4 or SIB5 of the broadcast message, that is, the configuration information is carried in the neighbor configuration information of SIB2, SIB4 or SIB5 of the broadcast message. In this way, the UE can obtain the configuration information from the SIB2, SIB4 or SIB5 information, and perform time difference measurement according to the configuration information. It can be understood that, in this manner, the access network device delivers in advance, so that the UE can measure the time difference when it is in an idle state or an inactive state.

In another possible implementation manner, the access network device sends configuration information to the UE through an RRC connection release message. The RRC connection release message is used to instruct the release of the RRC connection between the UE and the access network device, so that the UE and the access network device will enter the idle state or inactive state, and the configuration information is carried in the RRC connection release message, so that the UE is in the idle state or inactive state When entering the idle state or the inactive state, the measurement of the time difference can be started immediately.

Step 103, the UE measures the synchronization signal of the second cell to obtain a measurement result.

When the UE receives the configuration information and is in an idle state or an inactive state, the UE measures the synchronization signal of the second cell to obtain a measurement result, where the measurement result includes information about the time difference between the first cell and the second cell. Specifically, the UE uses the time information of the synchronization signal of the first cell as reference time information, and measures the time information of the synchronization signal of the second cell, so as to obtain information of the time difference between the first cell and the second cell, that is, to obtain the second cell. The time difference of the cell relative to the first cell.

In a possible implementation manner, when the UE receives the configuration information and is in an idle state or an inactive state, the UE measures the SFTD between the second cell and the first cell to obtain a measurement result, where the measurement result includes the first SFTD between the cell and the second cell. Specifically, the UE uses the frame boundary time of the system frame number of the synchronization signal of the first cell as a reference time, and measures the frame boundary time of the system frame number of the synchronization signal of the second cell, so as to obtain the distance between the first cell and the second cell. SFTD, that is, the SFTD of the second cell relative to the first cell is obtained.

After obtaining the measurement result, the UE may save the measurement result. If the number of second cells is more than one, the UE saves the corresponding relationship between the measurement result and the second cell. For example, the second cell includes three, namely the second cell 1, the second cell 2 and the second cell 3, then The UE stores the time difference 1 between the second cell 1 and the first cell, the time difference 2 between the second cell 2 and the first cell, and the time difference 3 between the second cell 3 and the first cell.

In the embodiment shown in FIG. 4 , the access network device determines and sends configuration information to the UE, which is used to instruct the UE to measure the time difference between the first cell and the second cell when the UE is in an idle state or an inactive state, The access network device obtains the time difference between the first cell and the second cell and adjusts accordingly, so as to ensure that the user terminal in the connected state can normally complete the measurement, thereby ensuring the validity of the measurement result and the continuity of the service.

As a possible implementation manner, after step 103, the following steps are further included:

Step 104, the UE sends the measurement result to the access network device. Correspondingly, the access network device receives the measurement result from the UE.

The UE can send the measurement results to the access network device in the following three ways:

Mode 1: When the UE triggers the establishment of an RRC connection again or triggers the restoration of the RRC connection, the UE sends the measurement result to the access network device through the RRC establishment request message or the RRC restoration request message, that is, the measurement result is carried in the RRC establishment request message or the RRC restoration request message. middle.

In the second manner, the UE sends the measurement result to the access network device after establishing the RRC connection or restoring the RRC connection. The measurement result may be sent to the access network device through the RRC establishment complete message or the RRC restoration complete message, that is, the measurement result is carried in the RRC establishment complete message or the RRC restoration complete message.

Manner 3: The UE sends the measurement result to the access network device when receiving the query message from the access network device, that is, the query message triggers the UE to report the measurement result. The query message may be used to query the measurement results of the specified cell, and may also be used to query the measurement results of all cells measured by the UE.

Step 105, the access network device adjusts the time window according to the measurement result to obtain time window information.

The access network device adjusts the time window according to the measurement result to obtain time window information. Wherein, the time window may be the window of the SMTC. Within the window of SMTC, the UE can perform SSB measurement on each cell on the frequency point for cell handover or cell reselection. The time window information includes an adjusted time window, that is, a window including an adjusted SMTC, and the adjusted window of the SMTC is completely covered by the MGAP, or the adjusted window of the SMTC is aligned with the MGAP and completely covered by the MGAP. When the UE is in the connected state, the synchronization signal measurement is performed on each cell on the frequency point within the adjusted SMTC window. The synchronization signal measurement is also known as the SSB measurement.

Specifically, the access network device adjusts the window of the SMTC according to the information of the time difference between the first cell and the second cell, so that the adjusted window of the SMTC is completely covered by the MGAP.

In a possible implementation manner, the access network device adjusts the MGAP according to the measurement result, so that the adjusted MGAP completely covers the SMTC window, so as to ensure that the UE in the connected state normally completes the measurement.

Step 106, the access network device sends time window information to the UE. Correspondingly, the UE receives the time window information from the access network device.

After adjusting the SMTC window, the access network device sends the adjusted SMTC window to the UE, so that when the UE is in the connected state, the SSB measurement is performed within the adjusted SMTC window. Or, after adjusting the MGAP, the access network device sends the adjusted MGAP to the UE, so that when the UE is in the connected state, the measurement can be completed normally.

The time window information may be sent through the RRC connection reconfiguration message, that is, the time window information is carried in the RRC connection reconfiguration message.

Step 106 is similar to step 1 in FIG. 1 , the difference is that the RRC connection reconfiguration message in step 1 includes the SMTC information preconfigured by the base station, while the RRC connection reconfiguration message in step 106 includes the adjusted SMTC information.

Steps 104 to 106, the UE reports the measurement result to the access network device, so that the access device adjusts the time window according to the measurement result, obtains time window information, and sends the time window information to the UE, so that when the UE is in the connected state, in the The SSB measurement is performed within the time window indicated by the time window information, thereby ensuring that the UE in the connected state can normally complete the measurement, ensuring the validity of the measurement result and the continuity of the service.

As a possible implementation manner, if cell reselection occurs when the UE is in an idle state or an inactive state, and the reselected cell does not belong to the second cell, the UE may discard the measurement between the second cell and the first cell result. For example, the first cell is cell 1, the second cell includes cell 2 to cell 4, and the reselected cell is cell 5. Before performing cell reselection, the UE saves the time difference between cell 2 to cell 4 and cell 1, respectively. , the reselected cell is not included in the second cell, and the UE discards the time difference between cell 2 to cell 4 and cell 1, respectively.

As a possible implementation manner, if cell reselection occurs when the UE is in an idle state or an inactive state, and the reselected cell belongs to the second cell, the UE continues to include measurements between the reselected cell and the first cell. result. For example, the first cell is cell 1, the second cell includes cell 2 to cell 4, the reselected cell is cell 3, and the UE saves the time difference between cell 2 to cell 4 and cell 1 before performing cell reselection. , the reselected cell is included in the second cell, and the UE continues to save the time difference between cell 3 and cell 1 respectively.

The communication method provided by the embodiment of the present application is described above, and the communication device provided by the embodiment of the present application will be described below.

5 is a schematic block diagram of a communication device 50 provided by an embodiment of the present application, and the communication device 50 includes a processing module 501 and a transceiver module 502;

For the case that the communication device 50 is a user terminal:

The transceiver module 502 is configured to receive configuration information from an access network device, where the configuration information is used to indicate that when the user terminal is in an idle state or an inactive state, the time difference is measured, where the time difference is between the first cell and the second cell time difference, the first cell is the serving cell of the user terminal;

The processing module 501 is configured to measure the synchronization signal of the second cell, and obtain a measurement result, where the measurement result includes information of a time difference between the first cell and the second cell.

In a possible implementation manner, the foregoing configuration information includes frequency information of the second cell.

In a possible implementation manner, the above configuration information includes identification information of the second cell.

In a possible implementation manner, the above configuration information is carried in a system message block of the broadcast message.

In a possible implementation manner, the above configuration information is carried in a radio resource control connection release message.

In a possible implementation manner, the transceiver module 502 is further configured to send the measurement result to the access network device.

In a possible implementation manner, the transceiver module 502 is specifically configured to send the measurement result to the access network device through a radio resource control establishment request message or a radio resource control recovery request message.

In a possible implementation manner, the transceiver module 502 is specifically configured to send the measurement result to the access network device after the radio resource control is established successfully or the radio resource control is restored successfully.

In a possible implementation manner, the transceiver module 502 is specifically configured to send the measurement result to the access network device in the case of receiving a query message from the access network device.

In a possible implementation manner, the transceiver module 502 is further configured to receive time window information from the access network device, where the time window information includes the adjusted time window, and the time window information is used to indicate that when the user terminal is in the connected state, The synchronization signal is measured within the adjusted time window.

In this case, the communication device 50 can implement the functions of the UE in the embodiment, and the detailed process of executing each unit in the communication device 50 may refer to the execution steps of the UE in the foregoing method embodiments, which will not be repeated here.

For the case that the communication device 50 is an access network device:

The processing module 501 is configured to determine configuration information, where the configuration information is used to indicate that when the user terminal is in an idle state or an inactive state, the time difference is measured, where the time difference is the time difference between the first cell and the second cell, and the first cell is the user the serving cell of the terminal;

The transceiver module 502 is configured to send configuration information to the user terminal.

In a possible implementation manner, the foregoing configuration information includes frequency information of the second cell.

In a possible implementation manner, the above configuration information includes identification information of the second cell.

In a possible implementation manner, the transceiver module 502 is specifically configured to send configuration information to the user terminal through the system message block of the broadcast message.

In a possible implementation manner, the transceiver module 502 is specifically configured to send configuration information to the user terminal through a radio resource control connection release message.

In a possible implementation manner, the transceiver module 502 is further configured to receive a measurement result from the user terminal, where the measurement result includes information about the time difference between the first cell and the second cell;

The processing module 501 is further configured to adjust the time window according to the measurement result, and obtain time window information, where the time window information includes the adjusted time window, and the time window information is used to indicate that when the user terminal is in the connected state, the time window is adjusted within the adjusted time window. Sync signal for measurement;

The transceiver module 502 is further configured to send time window information to the user terminal.

In this case, the communication device 50 can implement the functions of the access network device in the embodiment, and the detailed execution process of each unit in the communication device 50 may refer to the execution steps of the access network device in the foregoing method embodiments, which will not be repeated here.

It should be understood that the processing module 501 in this embodiment of the present application may be implemented by a processor or a circuit component related to the processor, and the transceiver module 502 may be implemented by a transceiver or a circuit component related to the transceiver.

As shown in FIG. 6, an embodiment of the present application further provides a communication device 60, the communication device 60 includes a processor 601, a memory 602 and a transceiver 603, wherein the memory 602 stores instructions or programs, and the processor 601 is used for executing Instructions or programs stored in memory 602 . When the instructions or programs stored in the memory 602 are executed, the processor 601 is configured to perform the operations performed by the processing module 501 in the foregoing embodiments, and the transceiver 603 is configured to perform operations performed by the transceiving module 502 in the foregoing embodiments.

It should be understood that the communication device 50 or the communication device 60 according to the embodiment of the present application may correspond to the UE or the access network device in the embodiment of the present application, and the operation and/or function of each module in the communication device 50 or the communication device 60 In order to implement the corresponding processes of the respective methods in FIG. 4 , for the sake of brevity, details are not repeated here.

An embodiment of the present application further provides a communication device, where the communication device may be a user terminal or a circuit. The communication apparatus may be configured to perform the actions performed by the user terminal in the foregoing method embodiments.

When the communication device is a user terminal, FIG. 7 shows a schematic structural diagram of a simplified user terminal. For convenience of understanding and illustration, in FIG. 7 , the user terminal takes a mobile phone as an example. As shown in FIG. 7 , the user terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process communication protocols and communication data, control user terminals, execute software programs, and process data of software programs. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of user terminals may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. When data is sent to the user terminal, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which 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 user terminal product, 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 or the like. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.

In this embodiment of the present application, the antenna and the radio frequency circuit with a transceiver function can be regarded as a transceiver module of the user terminal, and the processor with a processing function can be regarded as a processing module of the user terminal. As shown in FIG. 7 , the user terminal includes a transceiver module 910 and a processing module 920 . The transceiver module may also be referred to as a transceiver, a transceiver, a transceiver, and the like. The processing module may also be referred to as a processor, a processing board, a processing unit, a processing device, and the like. Optionally, the device for implementing the receiving function in the transceiver module 910 may be regarded as a receiving module, and the device for implementing the transmitting function in the transceiver module 910 may be regarded as a transmitting module, that is, the transceiver module 910 includes a receiving module and a transmitting module. The transceiver module may also sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit. The receiving module may also sometimes be referred to as a receiver, a receiver, or a receiving circuit, or the like. The sending module may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit.

It should be understood that the transceiver module 910 is used to perform the sending and receiving operations on the user terminal side in the above method embodiments, and the processing module 920 is used to perform other operations on the user terminal except the transceiver operations in the above method embodiments.

For example, the transceiver module 910 is configured to perform sending and receiving operations on the UE side in FIG. 4 , and/or the transceiver module 910 is further configured to perform other transceiver steps on the UE side in the embodiments of the present application. The processing module 920 is configured to perform step 103 in FIG. 4 , and/or the processing module 920 is further configured to perform other processing steps on the UE side in this embodiment of the present application.

When the communication device is a chip-type device or circuit, the device includes a transceiver unit and a processing unit. The transceiver unit may be an input/output circuit and/or a communication interface; the processing unit may be an integrated processor or microprocessor or integrated circuit.

When the communication device in this embodiment is a user terminal, reference may be made to the device shown in FIG. 8 . As an example, the device may perform functions similar to the processor 601 in FIG. 6 . In FIG. 8, the device includes a processor 1210, a transmit data processor 1220, and a receive data processor 1230. The processing module 501 in the above-mentioned embodiment may be the processor 1210 in FIG. 8 and perform corresponding functions. The transceiver module 502 in the foregoing embodiment may be the sending data processor 1220 and/or the receiving data processor 1230 in FIG. 8 . Although a channel encoder and a channel decoder are shown in FIG. 8 , it can be understood that these modules do not constitute a limiting description of this embodiment, but are only illustrative.

Figure 9 shows another form of this embodiment. The processing device 1300 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem. The communication apparatus in this embodiment may serve as a modulation subsystem therein. Specifically, the modulation subsystem may include a processor 1303 and an interface 1304 . The processor 1303 completes the functions of the above-mentioned processing module 501 , and the interface 1304 implements the functions of the above-mentioned transceiver module 502 . As another variant, the modulation subsystem includes a memory 1306, a processor 1303, and a program stored in the memory 1306 and executable on the processor. When the processor 1303 executes the program, the terminal device side in the above method embodiment is implemented. Methods. It should be noted that the memory 1306 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 1300, as long as the memory 1306 can be connected to the The processor 1303 is sufficient.

As another form of this embodiment, a computer-readable storage medium is provided, on which an instruction is stored, and when the instruction is executed, the method on the user terminal side in the foregoing method embodiment is executed.

As another form of this embodiment, a computer program product including an instruction is provided, and when the instruction is executed, the method on the user terminal side in the foregoing method embodiment is executed.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented. The process can be completed by instructing the relevant hardware by a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed , which may include the processes of the foregoing method embodiments. The aforementioned storage medium includes: ROM or random storage memory RAM, magnetic disk or optical disk and other mediums that can store program codes.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one unit.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions can be sent from one website site, computer, server, or data center to another via wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) means. A website site, computer, server or data center for transmission. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

Claims (30)

1. a communication method, is characterized in that, comprises: The user terminal receives configuration information from the access network device, where the configuration information is used to instruct the user terminal to measure the time difference when the user terminal is in an idle state or an inactive state, where the time difference is between the first cell and the second cell time difference, the first cell is the serving cell of the user terminal; The user terminal measures the synchronization signal of the second cell to obtain a measurement result, where the measurement result includes information of a time difference between the first cell and the second cell. 2. The method according to claim 1, wherein the configuration information comprises frequency information of the second cell. 3. The method according to claim 1, wherein the configuration information comprises identification information of the second cell. 4. The method according to any one of claims 1-3, wherein the configuration information is carried in a system message block of a broadcast message. 5 . The method according to claim 1 , wherein the configuration information is carried in a radio resource control connection release message. 6 . 6. The method of claim 1, wherein the method further comprises: The user terminal sends the measurement result to the access network device. 7. The method according to claim 6, wherein sending the measurement result by the user terminal to the access network device comprises: The user terminal sends the measurement result to the access network device through a radio resource control establishment request message or a radio resource control recovery request message. 8. The method according to claim 6, wherein sending the measurement result by the user terminal to the access network device comprises: The user terminal sends the measurement result to the access network device after the radio resource control is established successfully or the radio resource control is restored successfully. 9. The method according to claim 6, wherein sending the measurement result by the user terminal to the access network device comprises: The user terminal sends a measurement result to the access network device when receiving the query message from the access network device. 10. The method of claim 1, wherein the method further comprises: The user terminal receives time window information from the access network device, where the time window information includes an adjusted time window, and the time window information is used to indicate that when the user terminal is in the connected state, when the adjustment The synchronization signal is measured in the following time window. 11. A communication method, comprising: The access network device determines configuration information, the configuration information is used to instruct the user terminal to measure the time difference when the user terminal is in an idle state or an inactive state, where the time difference is the time difference between the first cell and the second cell, and the first cell A cell is the serving cell of the user terminal; The access network device sends the configuration information to the user terminal. 12. The method of claim 11, wherein the configuration information comprises frequency information of the second cell. 13. The method according to claim 11, wherein the configuration information comprises identification information of the second cell. The method according to any one of claims 11-13, wherein the sending, by the access network device, the configuration information to the user terminal comprises: The access network device sends the configuration information to the user terminal through the system message block of the broadcast message. 15. The method according to any one of claims 11-13, wherein the sending, by the access network device, the configuration information to the user terminal comprises: The access network device sends the configuration information to the user terminal through a radio resource control connection release message. 16. The method of claim 11, wherein the method further comprises: receiving, by the access network device, a measurement result from the user terminal, where the measurement result includes information about a time difference between the first cell and the second cell; The access network device adjusts the time window according to the measurement result, and obtains time window information, where the time window information includes the adjusted time window, and the time window information is used to indicate that when the user terminal is in the connected state, measuring the synchronization signal within the adjusted time window; The access network device sends the time window information to the user terminal. 17. A communication device, characterized in that the communication device comprises a processing module and a transceiver module; The transceiver module is configured to receive configuration information from an access network device, where the configuration information is used to instruct the user terminal to measure a time difference when the user terminal is in an idle state or an inactive state, where the time difference is the difference between the first cell and the the time difference between the second cells, where the first cell is the serving cell of the user terminal; The processing module is configured to measure the synchronization signal of the second cell, and obtain a measurement result, where the measurement result includes information of a time difference between the first cell and the second cell. 18. The communication device according to claim 17, wherein the configuration information comprises frequency information of the second cell. 19. The communication device according to claim 17, wherein the configuration information comprises identification information of the second cell. 20. The communication device of claim 17, wherein The transceiver module is further configured to send the measurement result to the access network device. 21 . The communication device according to claim 20 , wherein the transceiver module is specifically configured for the user terminal to send a radio resource control setup request message or a radio resource control recovery request message to the access network device. 21 . Send measurement results. 22 . The communication device according to claim 20 , wherein the transceiver module is specifically configured to send a measurement result to the access network device after successful establishment of radio resource control or successful restoration of radio resource control. 23 . 23. The communication device according to claim 20, wherein the transceiver module is specifically configured to send a measurement to the access network device in the case of receiving a query message from the access network device result. 24. The communication device of claim 17, wherein The transceiver module is further configured to receive time window information from the access network device, where the time window information includes an adjusted time window, and the time window information is used to indicate that when the user terminal is in a connected state, The synchronization signal is measured within the adjusted time window. 25. A communication device, characterized in that the communication device comprises a processing module and a transceiver module; The processing module is configured to determine configuration information, where the configuration information is used to instruct the user terminal to measure a time difference when the user terminal is in an idle state or an inactive state, where the time difference is the time difference between the first cell and the second cell, the first cell is a serving cell of the user terminal; The transceiver module is configured to send the configuration information to the user terminal. 26. The communication device of claim 25, wherein The transceiver module is specifically configured to send the configuration information to the user terminal through a system message block of a broadcast message. 27. The communication device of claim 25, wherein The transceiver module is specifically configured to send the configuration information to the user terminal through a radio resource control connection release message. 28. The communication device of claim 25, wherein The transceiver module is further configured to receive a measurement result from the user terminal, where the measurement result includes time difference information between the first cell and the second cell; The processing module is further configured to adjust the time window according to the measurement result to obtain time window information, where the time window information includes the adjusted time window, and the time window information is used to indicate when the user terminal is in a connected state. , and measure the synchronization signal within the adjusted time window; The transceiver module is further configured to send the time window information to the user terminal. 29. A communication device, comprising a memory, a processor and a program stored on the memory and running on the processor, characterized in that, when the processor executes the program, the program as claimed in claim 1- 10, or implement the communication method according to any one of claims 11-16. 30. A computer-readable storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the communication method according to any one of claims 1-10 is realized, or the communication method according to claim 1 is realized. The communication method of any one of claims 11-16.

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